• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ABSORBENT ARTICLE AND DISPOSABLE DIAPER An absorbent article is provided that accurately emphasizes surface irregularities on the side of the front sheet that contacts the skin. The present invention is an absorbent article 1A provided with a liquid permeable front sheet 60 composed of a white non-woven material, a liquid impermeable backsheet 40 provided opposite the front sheet, and an absorbent 50A provided between the front sheet. and the absorbent sheet, characterized in that a colored element 52A is further provided on the side of the front sheet which is not in contact with the skin which is visible through the front sheet and is colored in a color other than white, the front sheet having a plurality of protrusions 61 protruding in the thickness direction and a plurality of indents 62 indenting in the thickness direction, the basis weight of the protrusions being greater than the basis weight of the indents, and the color difference between the Lab value of the color of the visible colored element through the front leaf protrusions and the Lab value of the color of the colored element visible through the front leaf indents being 2.8 or more.
    公开号:BR112013005364B1
    申请号:R112013005364-0
    申请日:2011-09-26
    公开日:2021-05-04
    发明作者:Kyo Kikuchi；Kei WAKASUGI；Junko Ueda；Yasuhiro Yamanaka；Naoto Ohashi
    申请人:Unicharm Corporation；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an absorbent article and a disposable diaper.
    [0002] The absorbent article is known in the state of the art where a colored part is provided in an inserted part harmonized between a topsheet and an absorbent core in order to convey the existence of strong function of the absorbent article to consumers (see, for example , Patent Document 1 WO 2003/053313).
    [0003] In this absorbent article, the colored part has at least a first color tone and a second color tone, and by displaying the second color tone within an era of the first color tone, sensory depth perception can be created in the absorbent article.
    [0004] Still with regard to the provisions known from EP 0951889 and US 2007/298671 [Patent Literature]
    [0005] In the above-described absorbent article, the inventor(s) has recognized that when a feature is to impart to the skin-contacting surface of the topsheet side of the absorbent article, it may be difficult to form a colored part bearing the skin. minus two shades of color to match that surface shape. In addition, since it is not possible to form a colored part having at least two color tones that match the surface shape to the colored part, a user must have the impression of a surface shape that is different from the current surface shape of the the skin-contacting side of the topsheet of the absorbent article provided to a wearer.
    [0006] In a first aspect, an absorbent article is provided with a liquid-permeable topsheet composed of a white non-woven material, a liquid-impermeable backsheet provided in a position opposite the topsheet, and an absorbent provided between the sheet. top and backsheet, where a colored element is further provided on the side of the topsheet which does not contact the skin being visible through the topsheet and being colored in a color other than white, the topsheet having a plurality of protrusions protruding towards thickness and a plurality of indents indented in the thickness direction, the basis weight of the protrusions being greater than the basis weight of the indents, and the color difference between the Lab value of the color of the colored element visible through the protrusions of the top sheet and the Lab value of the color of the colored element visible through the indents of the top sheet being 2.8 or more.
    [0007] A disposable diaper of the present invention exhibits a striped pattern that extends in the same direction when the direction in which the protrusions and indents of the topsheet extend in an area at the center of the transverse direction of the topsheet surrounding the trunk, the striped pattern will be the same color as the colored element, and the striped pattern being exhibited by providing an elastic material colored in a color other than white on the surface not contacting the skin of the area in the center of the transverse direction of the topsheet surrounding the trunk.
    [0008] In another disposable diaper of the present invention is a disposable diaper provided with a liquid permeable topsheet composed of a white non-woven material, a liquid impermeable backsheet provided in a position opposite the frontsheet, and an absorbent provided between the topsheet and the backsheet, wherein a second sheet colored in a color other than white is further provided between the topsheet and the absorbent, the topsheet having a plurality of projections protruding in the thickness direction and a plurality of indents set back in the thickness direction, the basis weight of the protrusions being greater than the basis weight of the indents, the second sheet being provided in a part of an area in the flat direction of the absorber the color difference between the Lab value of the color of the second sheet visible through the top sheet bumps and the Lab value of the second sheet color visible through the top sheet indents being 2.8 or more, and the area in the flat direction where the second sheet is provided differing between a disposable diaper for use by a man and for use by a woman.
    [0009] According to the present invention, the surface undulations irregularities in the form of bumps and indentations on the side of the topsheet of an absorbent article that contacts the skin can be safely emphasized.
    [00010] The invention will be better understood after detailed description thereof, with respect to the attached drawings, presented by way of example and not limitation, in which: Figure 1 is a drawing explaining an absorbent article of a first embodiment of the present invention; Figure 2 is a drawing explaining a method and apparatus for forming a plurality of protrusions in the thickness direction and a plurality of indents in the thickness direction in a front sheet; Figure 3 is a drawing explaining an upper cover sheet visible through the front sheet; Figure 4 is a drawing explaining an absorbent article of a second embodiment of the present invention; Figure 5 is an exploded drawing of an absorbent article of a third embodiment of the present invention; Figure 6 is a drawing explaining a variation of an absorbent article of the first embodiment of the present invention; Figure 7 is a drawing explaining a variation of an embodiment of the present invention. First Configuration
    [00011] The following is an explanation of an absorbent article of a first embodiment of the present invention with reference to the drawings. The absorbent article of the first embodiment of the present invention is a disposable diaper, however, as one skilled in the art will appreciate, the absorbent article will not be limited to a disposable diaper. The topsheet of the non-woven material of the colored element of the first configuration may be isolated from the diapers shown and applied to alternative absorbent articles which also feature a backsheet and an absorbent, e.g. known alternative diaper constructions, sanitary absorbents, etc. . The absorbent articles shown represent exemplary configurations only.
    [00012] Figure 1 is a drawing explaining the absorbent article of the first embodiment of the present invention. Figure 1(a) is an aerial view of the absorbent article of the first embodiment of the present invention, while Figure 1(b) is a schematic cross-section A-A of the absorbent article in the first embodiment of the present invention. An absorbent article 1A in the first configuration may be divided into a front area surrounding the torso 12 that covers a wearer's lower abdomen (a) when the diaper is put on by a wearer (a), a crotch area 14 that covers the region. between a wearer's legs when the diaper is put on by the wearer, and a rear area encircling the torso 16 which covers a wearer's buttocks (a) when the diaper is put on by the wearer. In Figure 1(a), the longitudinal direction of the absorbent article 1A is that of the y-axis, while the transverse direction perpendicular to the longitudinal direction is that of the x-axis. In addition, the diaper lying flat as shown in Figure 1(a) is substantially flat and could be considered to lie on the yx plane.
    [00013] The absorbent article A1 is provided with a chassis 20, which has curved notched parts 22 on both sides in the transverse direction of a rectangle, flaps 30, which can be provided in areas on both sides in the transverse direction of the chassis 20 and which has a notched part 32 of which the edge is in the same shape as the notched part 22 of the chassis 20, a backsheet 40 provided in an area in the center of the chassis 20 in the transverse direction, an absorbent 50A provided in the backsheet 40, and a topsheet 60 provided in absorbent 50A. Apertures are formed around a user's legs (a) by the two slotted portions 22 and 32 of the chassis 20 and the tabs 30. The area of the chassis 20 and tabs 30 in the absorbent article 1A between the two slotted portions 22 and 32 is the crotch area 14. One of the areas adjacent to a front side in the longitudinal direction of the crotch area 14 is the area encircling the front torso 12, and the other area being the area encircling the rear torso 16. A stretch material 70 extending in the longitudinal direction of the absorbent article 1A may be provided between the vicinity of the edges in the transverse direction of the flaps 30. In addition, stretched material 80 extending in the longitudinal direction of the absorbent article 1A may further be provided in the vicinity of the edges of the flaps 30 in the center of the absorbent article.
    [00014] The chassis 20 forms the exterior of the body of the absorbent article 1A. A porous non-woven material or plastic film is used for the chassis 20 to prevent shortness of breath when worn. The flaps 30 cover the areas around a user's legs (a) as well as both sides of the upper abdomen and buttocks. A hydrophobic non-woven material is used for the flaps 30. The stretched material 70 provided between the chassis 20 and the flaps 30 ensures proper attachment of the absorbent article 1A around the legs. In addition, leak-preventing walls 34 are formed by lifting the center of the flaps 30 due to the contractile force of the stretch material 80 provided in the vicinity of the edges of the flaps 30 in the center of the absorbent article 1A and preventing urine or soft faeces from leaking from the position in the transverse direction of the crotch region 14 of the absorbent article 1A. Natural rubbers, synthetic rubbers or elastic fibers such as spandex may be used for 70 and 80 stretch materials.
    [00015] The backsheet 40 is a liquid impermeable sheet which does not allow the passage of urine, and is provided to prevent discharged urine from leaking out. For example, a waterproof non-woven material, a plastic resin composite of polyethylene, or a composite material of a non-woven material and a plastic film may be used for the backsheet 40.
    [00016] Absorbent 50A absorbs and retains a user's urine (a). For example, absorbent 50A is primarily composed of an absorbent member 51, such as a crushed cellulose, highly absorbent polymer or hydrophilic sheet, and cover sheets 52A and 53, such as tissue paper including an absorbent member or non-woven material subjected to treatment. hydrophilic. The cover sheets 52A define cover sheet 52A which covers the lateral surface of the top sheet (skin facing side) of the absorbent member 51, and the cover sheet 53 defines a lower cover sheet which covers the other surface (surface garment facing side) of the absorbent member 51. The top cover sheet 52A is colored in a color other than white, such as a chromatic color such as blue or green or an achromatic color such as gray. Cover sheets 52A and 53 may be adhered to absorbent member 51 with an adhesive such as a hot melt adhesive. The adhesive may be coated on the absorbent member 51 or the cover sheets 52A and 53 by spiral coating, curtain coating and the like.
    [00017] The topsheet 60 is a liquid permeable sheet that quickly absorbs a user's urine (a) and transfers it to the absorbent 50A. Since the topsheet 60 contacts the wearer's skin (a), it will desirably be required to feel comfort in the skin and secure the skin. The surface of the topsheet 60 that contacts the wearer's skin (a) will now be referred to as the skin-contacting surface, while the surface opposite the skin-contacting surface will hereinafter be referred to as the non-skin-contacting surface. In addition, it will be further desired that the topsheet 60 does not allow urine absorbed by the absorbent to return. The topsheet 60 will preferably be adhered to the absorbent 50A using an adhesive such as a heat melt adhesive to allow the user's urine to be quickly absorbed and transferred to the absorbent 50A. The adhesive will preferably be coated onto the topsheet 60 or the top cover sheet 52A by the coating line in order to inhibit the reduction in liquid permeability due to the adhesive. The colored topsheet 52A provided on the non-skin contacting surface of the topsheet 60 is visible through the topsheet 60. The topsheet 60 is preferably a non-woven material having a plurality of protrusions 61 protruding in the thickness and direction. extending in the transverse direction, and a plurality of indents 62 set back in the thickness direction and extending in the longitudinal direction. The distance between apexes of adjacent protrusions 61 is, for example, 4 mm. The plurality of protrusions 61 and the plurality of setbacks are alternatively matched in the transverse direction. The non-woven material used for the topsheet 60 preferably contains fibers to which the intersections thereof are adhered by heat melting. Said fibers may be, for example, fibers composed of a thermoplastic polymer material, such as a polyolefin such as polyethylene or polypropylene, a polyester such as polyethylene terephthalate, or a polyamide. In addition, core-sheath types or side-by-side types of fibers composed of a combination of a plurality of thermoplastic polymers may also be used for these fibers.
    [00018] The color of the topsheet 60 will preferably be white. In addition, the "white color" described in this description also includes white color tinged with other colors in addition to pure white color.
    [00019] In the following, an explanation will be provided of an example of a method for forming the plurality of protrusions 61 protruding in the thickness direction and the plurality of indents 62 recessed in the thickness direction in the topsheet with reference to Figure 2, A Figure 2(a) is a drawing explaining a process for forming protrusions and indents in a web formed to produce a non-woven material, while Figure 2(b) is a drawing showing a cross section in a transverse direction (CD) of a web in which bumps and indents have been formed. A web 210, formed by the web forming means like a carding machine, is conveyed to a suction cylinder 220. A heated fluid 231 is discharged in the web 210 onto a portion of the web 210 of nozzles and a discharge unit 230 for forms protrusions 211 and indents 212 in the weft 210. Fibers that have been pressed apart in the transverse direction (CD), perpendicular to the machine direction (MD) than to the working direction of the weft 210, gathered in the protrusions 211, and particularly in the sides 213 of the protrusions 211. Thus, once fibers of an area equivalent to the indents 212 are deposited on the protrusions 211, the basis weight of the protrusions 211, and particularly the sides 213 of the protrusions 211, increases. In adoption, since the fibers are dispersed in the transverse direction (CD) by fluid 231, the basic weight of the indents 212 of the indents is low.
    [00020] The fluid 231 that has been discharged from the discharge unit 230 may have a gas such as air or water vapor or a liquid such as water. In addition, it could be an aerosol containing fine particles of a solid or liquid in a gas.
    [00021] In the following, an explanation will be provided of the top sheet 52A visible through the top sheet 60 with reference to Figure 3. Figure 3(a) is a cross-sectional view of the top sheet 60 and the top sheet 52A provided on the non-skin contact surface of the sheet 60, and Figure 3(b) being a drawing explaining the top sheet 52A visible through the top sheet 60. In an area 310 at the bottom of the indents 62 of the top sheet 60, since the thickness of the top sheet 60 is less and the basis weight is also less, the top cover sheet 52A can be easily seen through the top sheet 60. Thus, the color of the top cover sheet 52A appears darker. at an area 310 at the bottom of the indents 62 of the topsheet 60 than at a side edge region 320 at the sides of the protrusions 61 of the topsheet 60 and than at an area 330 of the apexes of the protrusions 61 of the topsheet 60. In the region With the side edge 320 on the sides of the protrusions 61 of the top sheet 60, although the thickness of the top sheet 60 is not that thin, since the basis weight is high, the top cover sheet 52A may not be easily seen through the sheet 52A will either appear lighter or appear white in the side edge region 320 on the sides of the protrusions 61 of the topsheet 60. In the area 330 of the apexes of the protrusions 61 of the topsheet 60, since the topsheet 60 is thin and having At a high basis weight, the top sheet 52A will not be easily seen from the top sheet 60. Thus, the color of the top sheet 52A will appear lighter or will appear white in the area 330 of the apexes of the protrusions 62 of the top sheet 60.
    [00022] The color difference between the Lab value of the color of the upper cover sheet 52A visible through the protrusions 61 of the top sheet 60 and the Lab value of the color of the upper cover sheet 52A visible through the indents 62 of the top sheet 60 is of 2.8 or more. If the color difference between the Lab value of the color of the top sheet 52A visible through the protrusions 61 of the top sheet 60 and the Lab value of the color of the top sheet 52A visible through the indents 62 of the top sheet 60 is less than 2,8, the distinction of the color of the top sheet 52A visible through the protrusions 61 of the top sheet 60 from the color of the top sheet 52A visible through the indentations 62 of the top sheet 60 may be unrecognizable to the naked eye. In addition, the difference between the way in which the top cover sheet 52A appears through the protrusions 61 of the top sheet 60 and the way in which the top cover sheet 52A appears through the indents 62 of the top sheet 60 is small, and the visibility of the protrusions 61 and indents 62 of the topsheet 60 may not improve as desired due to a low difference in color.
    [00023] The percentage of the surface area of the protrusions 61 on the topsheet 60 will preferably be from 50% to 70% and more preferably from 65% to 75%.
    [00024] In addition the percentage of the surface area of the indents 62 will preferably be from 25% to 50% and more preferably from 25% to 35%. In the case of surface area percentages within these limits, surface irregularities in the topsheet 60 will be particularly emphasized by the different visibility of the topsheet 52A through different regions, e.g., the protrusions 61 and indents 62, of the topsheet 60.
    [00025] The absorbent article 1A of the first embodiment of the present invention as described above demonstrates the actions and effects indicated below. (1) An absorbent article 1A provided with a liquid permeable topsheet 60 composed of a white non-woven material, a liquid impermeable backsheet 40 provided opposite the front sheet, and an absorbent 50A provided between the topsheet 60 and the backsheet 40, wherein a topsheet 52A is further provided on the non-skin surface of the topsheet 60 which is visible through the topsheet and being colored in a color other than white, the topsheet 60 having a plurality of protrusions 61 protruding in the thickness direction and a plurality of indents 62 set back in the thickness direction, the plurality of protrusions 61 and the plurality of indents 62 extending in the longitudinal direction and being alternatively matched in the transverse direction, the basis weight of the protrusions 61 being greater than the basis weight of the indents 62, and the color difference between the color of the top cover sheet 52A visible through the protrusions 61 of the topsheet 60 and the color of the topsheet 52A visible through the indentations 62 of the topsheet 60 being 2.8 or more. As a result, the surface irregularities of the protrusions 61 and the indentations 62 in the skin-contacting surface of the topsheet 60 of the absorbent article 1A can be accurately emphasized. The existence of an accentuated function of the surface of the topsheet 60 of the absorbent article 1A can be immediately and quickly conveyed to the user 1A. In addition, since a striped pattern (e.g., protrusions 61 and indents 62) could be conveyed to the absorbent article 1A, the absorbent article 1A could be made to have a superior configuration. In addition, following the use of the absorbent article 1A, the protrusions 61 of the topsheet 60 appear whiter and more three-dimensional than the indentations 62 through which it will be visible from the topsheet 52A. Consequently, the part of the protrusions 61 in direct contact with the user's skin (a) may be recognized by a user (a) as being whiter and less stained, and thus giving the impression of a high sense of cleanliness to the user (a ). (2) The basis weight of the side edge region 320 on the sides of the protrusions 61 will be greater than the basis weight of other areas, eg 330, of the protrusions 61. As a result, the difference between the color of the cover sheet top 52A visible through the protrusions 61 of the top sheet 60 and the color of the top cover sheet 52A visible through the indentations 62 of the top sheet 60 in the vicinity of the boundary between the protrusions 61 and the indentations 62 becomes larger. (3) The absorbent 50A is provided on the non-skin contact surface of the topsheet 60, and the absorbent member 51 of the absorbent 50A being included by one or more cover sheets 52A and 53, and at least one of the cover sheets 52A and 53 being colored one color other than white. As a result, the surface irregularities of the protrusions 61 and indents 62, the irregularities 61 and 62 are emphasized on the skin contacting surface of the topsheet 60 only in the area where the absorbent 50A is present, enabling the user to easily determine the area where the 50A absorbent is present. In addition, as a result of only emphasizing the surface irregularities of the protrusions 61 and indentations 62 in the skin contacting surface 60 in the area where the absorbent 50A is present, the absorbent article 1 will be able to give the impression of having a Extremely high user absorption (a). At least a portion of one or more cover sheets 52A and 53 may be colored other than white if irregularities 61 and 62 are emphasized on the skin contacting surfaces of topsheet 60 only in the area where the absorbent 50A is present. Second Configuration
    [00026] The following will provide an explanation of an absorbent article of a second embodiment of the present invention with reference to the drawings. The absorbent article of the second configuration is also a disposable diaper, however, as specified in paragraph 0008 above, and being readily appreciated by one of ordinary skill in the art, the absorbent article need not be limited to a disposable diaper or an absorbent article as described. The topsheet of non-woven material and the colored element of the second configuration may be made in isolation from the disclosed diaper and applied to alternative absorbent articles which also feature a backsheet and an absorbent.
    [00027] Figure 4 is a drawing explaining the absorbent article of the second embodiment of the present invention. Figure 4(a) is an aerial view of the absorbent article in the second embodiment of the present invention, while Figure 4(b) is a schematic diagram of a cross-section B-B of the absorbent article in the second embodiment of the present invention. In addition, in Figure 4(a), the transverse direction of an absorbent article 1B is the y-axis direction, the transverse direction perpendicular to the longitudinal direction being the x-axis direction, and with the flat diaper lying flat as shown in Figure 4 (a) will be substantially flat and may be considered lying on the xy plane. The same reference symbols are used to indicate those constituents of the absorbent article 1B in the second configuration that are similar to the constituents of the absorbent article 1A in the first configuration, and an explanation will mainly be provided for those parts that differ from the absorbent article 1A of the first configuration. The absorbent article 1B of the second configuration has a second sheet 90B between the topsheet 60 and an absorbent 50B.
    [00028] The absorbent article 1B is provided with the chassis 20, the flaps 30, the backsheet 40, the absorber 50B provided on the backsheet 40, the second sheet 90B provided on the absorber 50B, and the topsheet 60 provided on the second sheet 90B.
    [00029] An upper cover sheet 52B, which covers the side surface of the top sheet of the absorbent member 51 in the absorber 50B, differs from the upper cover sheet 52A of the absorbent article 1A of the first configuration in that it is not colored.
    [00030] The second sheet 90B is used to disperse user urine released on the top sheet 60 and improve the cushioning of the skin contact surface of the absorbent article 1B. A hydrophilic liquid permeable material such as a woven material, non-woven material, porous plastic, or fluffed cellulose pulp may be used for the second sheet 90B. The second sheet 90B is colored in a color other than white, such as a chromatic color such as blue or green or an achromatic color such as gray.
    [00031] The second sheet 90B is provided to overlay at least a portion of the absorbent article 50B. The second sheet 90B preferably has an area smaller than the absorbent so that it covers a region of the absorbent only. For example, as shown in Figure 4(a), the second sheet 90B is provided in a position corresponding to a user's urine outlet (a) (urine point), and its surrounding area (absorption zone), or in other words, in an area of the lateral area surrounding the front trunk 12 of the absorbent 50B. Thus, since the area of the absorption zone differs between the absorbent article 1B for use by a man and the absorbent article 1B for use by a woman, the areas where the second sheet 90B is provided may also differ between the absorbent article 1B for men's use and the absorbent article 1B for women's use. Notably, the area where the second zone 90B is provided in the absorbent article 1B for men's use is closer to the lateral area surrounding the front trunk than the area where the second sheet 90B is provided in the absorbent article 1B for women's use. In addition, since the irregularities of the protrusions 61 and indents 62 of the skin contacting surface of the topsheet 60 are emphasized only in the area of the absorption zone of the topsheet 60, a user will easily be able to recognize the zone. of absorption. The top sheet 60 of the area where the second sheet 90B is provided has greater volume than the area where the second sheet 90B is not provided.
    [00032] In order to allow a user's urine (a) to be quickly absorbed and transferred to the absorbent 50B, the second sheet 90B may be adhered to the topsheet 60 and the absorbent 50B using an adhesive such as a heat melt adhesive. In addition, as a result of the basis weight being greater than that of the topsheet 60 and using a high density material for the second sheet 90B, liquid may be favorably transferred from the topsheet 60 to the second sheet 90B.
    [00033] The second sheet 90B may be adhered to the absorbent 50B using an adhesive such as a hot melt adhesive. The adhesive may be coated onto the second sheet 90B or the absorbent 50B by spiral coating, curtain coating or the like.
    [00034] Urine released from the topsheet 60 passes through the second sheet 90B and is absorbed by the absorbent 50B. Thus, since urine does not remain on the topsheet 60 or the second sheet 90B, there will be a small change in the color of the topsheet 60 and the second sheet caused by the color of the urine. Consequently, even after the urine has been received, the surface irregularities of the protrusions 61 and the indentations 62 in the skin contacting surface of the topsheet 60 will be emphasized in the same way as before the discharge of the urine. As a result, even after the urine has been received, an impression that the skin contacting surface of the absorbent article 1B is dry can be given to the user (a).
    [00035] The color difference between the color of the second sheet 90B visible through the protrusions 61 of the top sheet 60 and the color of the second sheet 90B visible through the indents 62 of the top sheet 60 is again 2.8 or more. color difference between the color of the second sheet 90B visible through the projections 61 of the top sheet 60 and the color of the second sheet 90B visible through the indents 62 of the top sheet 60 is less than 2.8, the color distinction of the second sheet 90B visible through protrusions 61 of topsheet 70 of the color of second sheet 90B visible through indentations 62 of topsheet 60 may be unrecognizable to the naked eye. In addition, if the color difference is less than 2.8, the difference between the way in which the second sheet 90B appears through the projections 61 of the top sheet 60 and the way in which the second sheet 90B appears through the indents 62 of the topsheet 60 is small, and the visibility of the protrusions 61 and indents of the topsheet 60 may not improve as desired due to a small difference in color.
    [00036] The absorbent article 1B of the second embodiment of the present invention as described above demonstrates the actions and effects indicated below. (1) An absorbent article 1B provided with a liquid permeable topsheet 60 composed of a white non-woven material, a liquid impermeable backsheet 40 provided opposite the topsheet 60, and an absorbent 50B provided between the topsheet 60 and the backsheet 40, where the second sheet 90B is further provided on the non-skin surface of the topsheet 60 which is visible through the topsheet 60 and being colored a color other than white, the topsheet 60 having a plurality of protrusions 61 protruding in the thickness direction and a plurality of indents 62 set back in the thickness direction, the plurality of protrusions 61 and the plurality of indents 62 extending in the longitudinal direction and being alternatively matched in the transverse direction, the basis weight of the indents 62, and the color difference between the color of the second sheet 90B visible through the indents 62 of the top sheet 62 being 2.8 or more. As a result, the surface irregularities of the protrusions 61 and indentations 62 in the skin contacting surface of the topsheet 60 in the area where the second sheet is provided can be accurately emphasized. (2) The basis weight of the area of the sides of the protrusions 61 is greater than the basis weight of other areas of the protrusions 61. As a result, the difference between the color of the second sheet 90B visible through the protrusions 61 of the top sheet 60 and the color of the second sheet 90B visible through the indents 62 of the top sheet 60 in the vicinity of the boundary between the projections 61 and the indents 62 becomes larger. (3) The second sheet 90B is provided to overlay a portion only of the absorbent 50B. As a result, by providing the second sheet 90B in an area as an absorption zone of the absorbent article 1B, a user (a) can easily recognize said area, i.e. the absorbent zone. (4) The area in the flat direction where the second sheet 90B is provided differs between a man's diaper and a woman's diaper. As a result, an absorption zone of a disposable diaper will be easily recognizable, so that the user (a) will be able to determine whether the diaper is for male or female use. More specifically, the position where the second sheet 90B is provided will preferably be close to a urine point in order to inhibit the transfer of liquid and the return of urine from the absorbent 50B. The position where the second sheet 90B of a men's diaper is provided will preferably be approximately 15 to 30 mm towards the area surrounding the front trunk 12 compared to the position where the second sheet 90B is provided in a men's diaper. a woman. As a result, the second colored sheet 90B is suitably present in the vicinity of a user's urine point (a), and as a result it is easy to recognize that there are surface irregularities in the vicinity of the diaper's urine point, the user may effectively recognize that diaper absorption is accentuated. Third Configuration
    [00037] The following will provide an explanation of an absorbent article of a third embodiment of the present invention with reference to the drawings. The absorbent article of the third configuration of the present invention is also a disposable diaper, however, as specified in paragraph 0008 above, and being readily appreciated by one of ordinary skill in the art, the absorbent article need not be limited to a diaper. disposable or an absorbent article as described. The topsheet of non-woven material and the colored element of the third configuration may be taken in isolation from the disclosed diaper and applied to alternative absorbent articles which also feature a backsheet and an absorbent.
    [00038] Figure 5 is a drawing explaining the absorbent article of the third embodiment of the present invention. Figure 5(a) is an aerial view of the absorbent article in the third embodiment of the present invention, while Figure 5(b) is a schematic diagram of a C-C cross-section of the absorbent article in the third embodiment of the present invention. In addition, in Figure 5(a), the longitudinal direction of an absorbent article 1C is the y-axis direction, the transverse direction perpendicular to the longitudinal direction being the x-axis direction, and with the diaper lying flat as shown in Figure 5 (a) will be substantially flat and can be considered lying on the x y plane. The same reference symbols are used to indicate those constituents of the absorbent article 1C in the third configuration that are similar to the constituents of the absorbent article 1A of the first configuration, and an explanation will mainly be provided for those parts that differ from the absorbent article 1A of the first configuration. In the absorbent article 1C of the third configuration, an adhesive for adhering the topsheet 60 to the absorbent 50C is colored in a color other than white, such as a chromatic color such as blue or green or an achromatic color such as gray.
    [00039] The absorbent article 1C is provided with the chassis 20, the flaps 30, the backsheet 40, an absorbent 50C provided in the backsheet 40, and the topsheet 60 provided in the absorbent 50C.
    [00040] An upper cover sheet 52C covering the side of the front surface sheet 51 differs from the front cover sheet 52A of the absorbent article of the first configuration which is not colored.
    [00041] The topsheet 60 is adhered to the absorbent 50C using an adhesive 100C as a heat melt adhesive. Adhesive 100C is coated at a position on the non-skin surface of the topsheet 60 opposite the indents 62 or at a position on the side of the topsheet of absorbent 50C opposite the indents 62 of the topsheet 60. Notably, the adhesive 100C it is coated in the form of tapes (strips) extending in the longitudinal direction coinciding with the indents 62 of the top sheet 60 extending in the transverse direction. The width of the tapes where the adhesive 100C is provided will preferably be less than the width of the indents in the transverse direction. For example, if the width in the transverse direction of the indents 62 is 1 mm, then the adhesive 100C will be coated in the longitudinal direction on the non-skin surface of the topsheet 60 or on the side surface of the topsheet of the absorbent 50C at tapes having widths of 0.8 mm. Here, the width of an indentation 62 is the dimension in the transverse direction from (i) an intermediate position between the apex of an adjacent protrusion 61 and a lower portion of the indentation 62 to (ii) another intermediate position between the apex of another protrusion adjacent 61 and the lower part of the indent 62. As a result, since the area opposite the indents 61 of the surface not in contact with the skin 60 are not colored, while the area opposite the indents 62 of the surface not in contact with the skin of the topsheet 60 is colored, the difference in the way in which the color appears between the protrusions 61 and the indentations 62 of the topsheet 60 increases.
    [00042] In this case, the color difference between the color of an upper cover sheet 52C visible through the protrusions 61 of the top sheet 60 and the color of the adhesive 100C visible through the indents 62 of the top sheet 60 will be 2.8 or more, If the color difference between the color of the top sheet 52C visible through the protrusions 61 of the top sheet 60 and the color of the adhesive 100C visible through the indents 62 of the top sheet 60 will be less than 2.8, it may not be It is possible to distinguish between the color of a top sheet 52C visible through the protrusions 61 of the top sheet 60 and the color of the adhesive 100C visible through the indentations 62 of the top sheet 60 by observation with the naked eye. In addition, if the color difference between the color of an upper cover sheet 52C visible through the protrusions 61 of the top sheet 60 and the color of the adhesive 100C visible through the indentations 62 of the top sheet 60 is less than 2.8, the difference between the way in which the top cover sheet 52C appears through the protrusions 61 of the topsheet 60 and the way in which the adhesive 100C appears through the indentations 62 of the topsheet 60 becomes small, and the visibility of the protrusions 61 and the indents 62 of the topsheet 60 may not improve as desired due to a low difference in color.
    [00043] In addition, even if the area where the adhesive 100C is coated being shifted slightly in the transverse direction of the area corresponding to the indents 62 of the topsheet 60, since a part that is not colored always appears in the area opposite the protrusions 61 of the non-skin surface of the topsheet 60 and a portion that is colored always appearing in the area opposite the indents 62 on the non-skin contacting surface of the topsheet 60, the difference in the way in which the color appears between the protrusions 61 and indents 62 of the top sheet 60 will always be large. In this case, the color difference between the color of adhesive 100C visible through the protrusions 61 of the topsheet 60 and the color of the adhesive 100C visible through the indentations 62 of the topsheet 60 will be 2.8 or more. As a result, surface irregularities of the protrusions 61 and indentations 62 on the skin-contacting surface of the topsheet 60 of the absorbent article 1C can be accurately emphasized.
    [00044] The absorbent article 1C of the third embodiment of the present invention as described above demonstrates the actions and effects indicated below.
    [00045] An absorbent article 1C provided with a liquid permeable topsheet 60 composed of a white non-woven material, a liquid impermeable backsheet 40 provided opposite the topsheet 60, and an absorbent 50C provided between the topsheet 60 and the backsheet 40, where an adhesive 100C is further provided between the topsheet 60 and the absorbent 50C which is visible through the topsheet 60 being colored in a color other than white, the topsheet 60 having a plurality of protrusions 61 protruding in the thickness direction and a plurality of indents 62 set back in the thickness direction, the plurality of protrusions 61 and the plurality of indents extending in the longitudinal direction and being alternatively harmonized in the transverse direction, the basis weight of the protrusions 61 being greater than basis weight of the indents 62, the color difference between the color of the adhesive 100C visible through the protrusions 61 of the top sheet 60 and the color of the adhesive 100C visible. and through the indents 62 of the topsheet 60 being 2.8 or more, the adhesive 100C being provided at a non-skin contacting surface position of the topsheet 60 to coincide with the indents 62 of the topsheet 60, and the width of the adhesive 100C in each of the areas where the adhesive 100C is provided being less than the width in the transverse direction of the indents, notably less than the width thereof. As a result, surface irregularities of the protrusions 61 and indentations 62 of the skin contacting surface of the topsheet 60 can be accurately emphasized. In addition, since the non-skin surface region of the topsheet 60 opposite the protrusions 61 is not very colored, while the non-skin surface area of the topsheet 60 opposite the indents is colored, the The difference in the way in which the color appears between the protrusions 61 and the indentations 62 of the topsheet 60 becomes large, and thus making it possible to further emphasize the surface irregularities of the protrusions 61 and the indentations 62 of the surface in contact with the skin.
    [00046] [Examples]
    [00047] The color difference between the color of a colored part visible through the protrusions of a top sheet and the color of a colored part visible through the indents of a top sheet was measured in the examples.
    [00048] (Samples)
    [00049] Example 1 was a disposable diaper according to the First Configuration in which one cover sheet was colored green, and Example 2 was a disposable diaper according to the Second Configuration in which the second sheet was colored blue. Both of these examples were samples in which the surface irregularities of the topsheet were confirmed to be visible in comparison with comparative examples. Absorbent articles that did not have a colored part (Comparative Example 1: Large Size Moony, Unicharm Corp.) were also measured for color difference.
    [00050] The basis weight of the topsheet of Example 1 was approximately 30 g/m2, the basis weight of the topsheet of Example 2 was approximately 25 g/m2, and the basis weight of the topsheet of Comparative Example 1 was approximately 30 g/m2,
    [00051] The thickness of the protrusions of the top sheet of Example 1 was from 1.3 to 1.5 mm and the thickness of the indents was from 0.4 to 0.6 mm, the thickness of the protrusions of the top sheet of Example 2 being from 0.7 to 0.9 mm and the thickness of the indents being from 0.3 to 0.5 mm and the thickness of the projections of the upper sheet of Comparative Example 1 being from 1.3 to 1.5 mm and the thickness of the indents being from 0.4 to 0.6 mm.
    [00052] The thickness of the protrusions and indents was measured as described below. Here, the thickness of the bosses refers to the thickness at the apexes of the bosses, while the thickness of the indents refers to the thickness of the deepest part of the indents. (1) A piece of fibrous non-woven material for thickness measurement was cut parallel in the transverse (CD) direction using a cut face (standard replacement blade for HA-100B and HA-NB manufactured by Kokuyo Co., Ltd. ) to prepare the cross sections by laying in parallel with the cross direction (CD) on the fibrous non-woven material. Subsequently, the surface of the fibrous non-woven material was placed on a horizontal surface H and cross-sectional micrographs for observation were obtained at a amplitude of 25X using the Keyence Digital Microscope Model VHX-100. (2) The cross section micrographs were processed with image processing software in the form of USB Digital Image Analysis Software manufactured by Scalar Corp. followed by the binarization of the resulting images. At the same time the threshold value was set at 50. “Hole filling” was selected for the arithmetic processing method of binary image morphology analysis of the binarized images, followed by processing by the “white” selection for the target color. In addition, “hole fill” was again selected for the arithmetic processing method of binary image morphology analysis, followed by processing by the “black” selection for the target color. Discontinuous fibers in the form of white islands were removed from the images on which the processing was completed to obtain corrected cross-sectional CD micrographs free of streaked fibers. (3) In corrected micrographs, the distance from the apex of a protrusion to the horizontal surface H on which the samples were placed was defined as the thickness of the protrusions. (4) the distance from the bottom of an indent perpendicular to the horizontal surface H to the horizontal surface on which the samples were placed was defined as the thickness of the indents.
    [00053] (Color Difference Measurement Method) (1) Front sheets of Examples 1 and 2 and Comparative Example 1 were photographed under the conditions indicated below.
    [00054] Camera used for photography: Canon IXY Digital 5.0 Megapixels
    [00055] Photography environment: The samples were illuminated using a Cold Light CL-570PX manufactured by LPL Corp (lamp: PHOTOLUX57 (57 W x 1 lamP) color temperature: approx. 5000K) which was mounted directly on the sample. The distance between the Cold Light CL-570PX and the sample is 80100cm.
    [00056] Distance from photography: 20 cm
    [00057] (2) Image data obtained for photographs of samples that were analyzed using image editing software (Microsoft® Paint Ver. 5.1)
    [00058] (3) the center in the transverse direction of the protrusions and the center in the transverse direction of the indents in the image of the front sheets were designated according to the following procedure, and the RGB values were revealed and measured at the designated positions.
    [00059] The positions where the RGB values were revealed were assigned after selecting the “Selection Color” from the menu in the toolbar, and the RGB values were revealed when “Edited Color” was selected from the menu followed by the selection of “Color Generated”.
    [00060] The RGB values were measured for 10 positions for each of the bumps and indents, and the color difference was calculated using the average value of 10 RGB values.
    [00061] (4) The main value of the RGB values of the bulges of the front sheets and the main value of the RGB values of the indents were converted to XYZ values, and then further converted to Lab values to calculate the color difference.
    [00062] The RGB values of the protrusions and the RGB values of the indents of the front sheets were respectively converted to XYZ values using the following formulas:
    [00063] X = 0.606R + 0.1735G + 0.2003B
    [00064] Y = 0.289R + 0.5866G + 0.1144B
    [00065] Z = 0.661G + 1.1157B
    [00066] The XYZ values of the bosses and the XYZ values of the indents of the front sheets were respectively converted to Lab values using the following formulas:
    [00067] L = 116 (Y/Yn) 1/3 - 16
    [00068] a = 500 {(X/Xn) 1/3 - (Y/Yn) 1/3}
    [00069] b = 200 {Y/Yn) 1/3 - (Z/Zn) 1/3}
    [00070] where,
    [00071] (Y/Yn) > 0.008856
    [00072] (X/Xn) > 0.008856
    [00073] (Z/Zn) > 0.008856
    [00074] In addition, in this case there were values for (X/Xn), (Y/Yn) or (Z/Zn) that were equal to/or less than 0.008856, (X/Xn, (Y/Yn) and (Z/Zn) were substituted as indicated below in the formulas used to determine L, a and b:
    [00075] (X/Xn) 1/3 -> 7,787 (X/Xn) + 16/116
    [00076] (Y/Yn) 1/3 -> 7,787 (Y/Yn) + 16/116
    [00077] (Z/Zn) 1/3 -> 7,787 (Z/Zn) + 16/116
    [00078] where,
    [00079] Xn = 98,074
    [00080] Yn = 100,000
    [00081] Zn = 118,232
    [00082] The ΔEab* color difference between the Lab values of the protrusions and the Lab values of the indents of the front sheets was calculated using the following formula:
    [00083] ΔEab* = {(ΔL)2 + (Δa)2 + (Δb)2 } 1/2
    [00084] Here, ΔL is the difference between the L value of the protrusions of a top sheet and the L value of the indents of the front sheet, Δa being the difference between a value of protrusions of a top sheet and a value of the indents of the front sheet , and Δb is the difference between the b value of protrusions on a top sheet and the b-value of protrusions on the front sheet.
    [00085] (Measurement Results) (1) The average values of the RGB values of the bumps in Example 1 were (R, G, B) = (136, 151, 129), while the average values of the RGB values of the indents were ( R,G,B) = (135, 158, 130).
    [00086] The color difference ΔE between the color of the bumps and the color of the indents of the top sheet of Example 1 was 10.8. In addition, the color difference between the color of the protrusions and the color of the indents of the top sheet of Example 1 was enabled to be clearly recognized by visual observation with the naked eye, and the protrusions of surface irregularities were further emphasized and visible.
    [00087] (2) The average values of the RGB values of the protrusions in Example 2 were (R, G, B) = (146, 152, 145), while the average values of the RGB values of the indents were (R, G, B ) = (142, 153, 151).
    [00088] The color difference ΔE between the color of the protrusions and the color of the indents of the top sheet of Example 2 was 2.85. In addition, the color difference between the color of the bumps and the color of the indents of the top sheet of Example 2 has been enabled to be recognized by visual observation with the naked eye, and the bumps of surface irregularities have been enabled to be visibly recognized to be gifts.
    [00089] (3) The average values of the RGB values of the protrusions of Comparative Example 1 were (R, G, B) = (150, 152, 135), while the average values of the RGB values of the indents were (R, B, B) = (156, 157, 143).
    [00090] The color difference ΔE between the color of the protrusions and the color of the indents of the top sheet of Comparative Example 1 was 2.2. The presence of surface irregularities on the top sheet was unable to be clearly confirmed by visual observation at naked eye compared to Examples 1 and 2,
    [00091] The absorbent article 1A of the first configuration of the present invention, the absorbent article 1B of the second configuration, and the absorbent article 1C of the third configuration as described above, may be modified in the manner described below: (1) If a colored part is provided in absorbent articles 1A to 1C is visible through the topsheet 60 on the surface not in contact with the skin of the topsheet 60 is visible through the topsheet 60, and being colored in a color other than white, the element which is colored will not be limited to top cover sheet 52A, second sheet 90, and adhesive 100C. (2) The plurality of protrusions and the plurality of indents formed on the topsheet are not limited to the protrusions 61 and the indents extending in the longitudinal direction and alternatively matched in the transverse direction. For example, the bumps and indents may have a circular shape in the xy plane and be formed by the volume of the surface in contact with the skin of the front sheet.
    [00092] (3) Although the top cover sheet 52A covering the side of the front cover sheet 60 of the absorber 50A is colored in the absorbent article 50A of the first embodiment, a lower cover sheet 53 covering another surface of the absorber 50 , it can also be colored.
    [00093] (4) In the coloring of an upper cover sheet and the second sheet 90B, the coloring may be further performed by printing in a prescribed form or pattern in a color other than white, such as a chromatic color such as blue or green or an achromatic color such as gray on the topsheet side surface of the top cover sheet or second sheet. For example, as shown in the absorbent article 1D of Figure 6, an oval shape 110D having a color other than white may be formed by printing on the topsheet side surface of a topsheet 52D of an absorbent 50D. Here, Figure 6(a) is an aerial view of the absorbent article, and Figure 6(b) is a cross-sectional view taken along line D-D of Figure 6(a). As a result, a user will be able to easily recognize an area, such as an absorption zone, by performing printing only on the prescribed area, such as an absorption zone. In addition, since the surface irregularities of the protrusions 61 and indents 62 of the surface in contact with the skin of the topsheet 60 are emphasized in a prescribed area, such as an absorption zone, the absorption of a prescribed area as a zone absorption may convey a strong impression to a user.
    [00094] (5) A striped pattern that extends in the same direction as the direction in which the protrusions 61 and indents 62 of the topsheet 60 extend may be displayed in a region in the center in the transverse direction of the area surrounding the front trunk 12 and/or the area surrounding the back torso 16 of an absorbent article. For example, as shown in an absorbent article 1E of Figure 7(a), a striped pattern 130 extending in the same direction as the direction in which the protrusions 61 and indents 62 of the topsheet 60 extend could be formed in one area. at the center in the transverse direction of the area surrounding the rear trunk 16 of an absorbent article. As a result, when a user has spread a disposable diaper in order to wear the disposable diaper on a user, the user is able to recognize that surface irregularities are present on the surface in contact with the skin of the topsheet 60 in the area surrounding the rear trunk 16 before looking at surface irregularities in the surface in contact with the skin of the topsheet 60 in the crotch area 14. The color of the striped pattern will preferably be similar to the color visible through the topsheet in the area between legs 14. For example, if the color visible through the top sheet is blue, then the color of the striped pattern will preferably also be blue.
    [00095] A fastener 150 will preferably be provided on the non-skin contact surface of the area surrounding the front trunk 12 of the absorbent article 1E shown in Figure 7(a), and an adhesive tape 160 being provided on both sides in the direction transverse of the area surrounding the rear torso 16 of the absorbent article 1E. Loops provided on the surface of the fastening element 150 and hooks provided on the distal end of the adhesive tape 160 make up a flat fastener.
    [00096] Figure 7(b) is a cross-sectional view taken along line E-E of Figure 7(a). As shown in Figure 7(b), a striped pattern 130 may be visible from the side of the skin contacting surface of the topsheet 60, in an area in the center in the transverse direction of the area surrounding the front trunk 12 and the area surrounding the rear trunk 16 of the topsheet 60 by the provision of an elastic member 170 colored in a color other than white. A sheet-like non-woven material, urethane sheet or string-like elastic body harmonized in rows may be used as the elastic member 170. As a result of the topsheet 60 being shrunk in the transverse direction by the elastic member 170, the indents 62 having a low weight base and thickness are preferably contracted, resulting in a state in which the protrusions 61 are still three-dimensionally elevated. Consequently, the surface irregularities 61 and indents 62 of the topsheet appear to be more emphasized than in the case of emphasizing the surface irregularities of the projections 61 and indents 62 of the topsheet 60 using the colored top cover sheet 52A and the second 90B colored sheet. In addition, although the compressed indents 62 are stretched in the case of stretching the adhesive tape 160 and spreading the diaper in order to wear the diaper for use, although the topsheet 60 stretches, in which the colored elastic member 170 appears different between the protrusions 61 and the indents 62 of the topsheet 60, the matching of the topsheet 60 having surface irregularities that can be pressed against the wearer (a).
    [00097] (6) In addition to a disposable diaper, the absorbent article according to some embodiments of the present invention may be applied to an absorbent article such as a sanitary napkin, incontinence pad or panty liner.
    [00098] One or more configurations and variations can be combined. Settings and variations can also be combined anyway.
    [00099] The above explanation is only intended to be exemplary, and the present invention will not be limited by the aforementioned configurations and variations.
    [000100] The first aspect of the present invention described above may be harmonized at least in the following items:
    [000101] An absorbent article, comprising a liquid-permeable topsheet composed of a white non-woven material, a liquid-impermeable backsheet provided in a position opposite the front sheet, and an absorbent provided between the topsheet and the backsheet, where a colored element is further provided on the side of the topsheet which does not contact the skin which is visible through the topsheet and being colored in a color other than white, the topsheet having a plurality of protrusions protruding in the thickness direction and a plurality of indents set back in the thickness direction, formed by the discharge of a heated fluid, the basic weight of the protrusions being greater than the base weight of the indents, and the color difference between the color of the colored element, as seen through the protrusions of the front sheet, and the color of the colored element, as seen through the indents on the top sheet, being 2.8 or more.
    [000102] Additionally, the present invention may include the following configurations:
    [000103] The colored element can be colored with a chromatic color such as blue or green or an achromatic gray dome color.
    [000104] The color element can be a solid color or it can be only partially colored.
    [000105] Color can be applied to a surface of the colored element by printing. Color can be applied in a pattern. The pattern can be in an oval shape.
    [000106] Color element may have higher density than front sheet.
    [000107] The color difference between the Lab value of the color of the colored element, as seen through the bumps on the top sheet and the Lab value of the color of the colored element, as seen through the indents on the top sheet may be 0.8 or more.
    [000108] The thickness of the protrusions is greater than the thickness of the indents.
    [000109] The basis weight of the side edge regions of the ridges is greater than the basis weight of the area of the ridges between the side edge regions.
    [000110] The color difference between the color of the colored element, as seen through the indents of the front sheet, and the color of the colored element, as seen through the side edge regions of the protrusions, may be greater than the color difference between the color of the colored element, as seen through the indents on the front sheet, and the color of the colored element, as seen through the indents on the front sheet.
    [000111] The color of the colored element, as seen through the protrusions, will preferably be measured at the center in the transverse direction of the protrusions and the color of the colored element, as seen through the indents, will preferably be measured at the center in the transverse direction of the indents.
    [000112] The color difference of the colored element, as seen through the side edge regions of the protrusions, will preferably be measured at the center of the transverse direction of the side edge regions of the protrusions.
    [000113] The absorbent may have a cover sheet covering an absorbent member of the absorbent, where at least a part of the cover sheet is colored, and the colored part of the cover sheet defining the colored element.
    [000114] A second sheet may be provided between the top sheet and the absorbent, where the colored element is the second sheet.
    [000115] The colored element, defined by the cover sheet or the second sheet respectively, may have an area smaller than the absorbent and cover only a part of the absorbent.
    [000116] The cover sheet or the second sheet may be colored by printing an upper surface of these sheets.
    [000117] The colored element may be an adhesive to adhere the top sheet to the absorbent, where an adhesive is only provided in a position opposite the indents of the top sheet on the surface not in contact with the skin of the front sheet, and the width of the area where the adhesive is provided being less than the width of the indents.
    [000118] The plurality of protrusions and the plurality of indents of the top sheet may extend in the longitudinal direction and alternatively be harmonized in the transverse direction.
    [000119] The adhesive may comprise a plurality of tapes each extended in the longitudinal direction and spaced apart in the transverse direction, each tape underlying a respective indentation and being narrower than the underlying tape.
    [000120] An elastic sheet material colored with a color other than white may be provided which is provided on the surface of the topsheet that does not contact the user's skin (a) and in a central area of the topsheet in the transverse direction in a region of the top sheet that surrounds a user's waist (a).
    [000121] The absorbent article may comprise a disposable diaper. BRIEF DESCRIPTION OF REFERENCE SYMBOLS 1A-1E Absorbent article 20 Chassis 22 Notched part 30 Flap 32 Notched part 40 Back sheet 50A-50D Absorbent 51 Absorbent member 52A-52D, 53 Cover sheet 60 Top sheet 61 Protrusion 62 Setback 70.80 Material stretchable 90B Second sheet 100C Adhesive 130 Striped pattern 170 Elastic member 210 Weft 211 Protrusion 212 Setback 220 Suction cylinder 230 Discharge unit 231 Fluid
    权利要求:
    Claims (15)
    [0001]
    1. - "ABSORBENT ARTICLE", comprising a liquid permeable topsheet (60) comprising a white non-woven material, a liquid impermeable backsheet (40) provided in a position opposite the front sheet, and an absorbent (50A-50D ), provided between the top sheet (60) and the back sheet (40) a colored element (52A-52D, 53) is further provided on a surface not in contact with the skin, and is colored in a color other than white, characterized in that the topsheet (60) has a plurality of protrusions (61) which protrude in the thickness direction of the absorbent article and a plurality of indents (62) retracted in the thickness direction, formed by the discharge of a heated fluid, the basis weight of the bumps being greater than the base weight of the indents, and a color difference between the Lab value of the color of the colored element, as seen through the bosses on the front sheet, and the Lab value of the color of the colored element, as seen through the indents of the top sheet (60) be 2.8 or more.
    [0002]
    2. - "ABSORBENT ARTICLE", according to claim 1, characterized in that the color difference between the Lab value of the color of the colored element, as seen through the projections of the fleet sheet and the Lab value of the color of the colored element, as seen through the indents of the top sheet (60) to be 10.8 or more.
    [0003]
    3. "ABSORBENT ARTICLE", according to any one of the preceding claims, characterized in that the thickness of the protrusions is greater than the thickness of the recesses.
    [0004]
    4. "ABSORBENT ARTICLE", according to any one of claims 1 or 2, characterized in that the basis weight of the lateral edge regions of the protrusions is greater than the basis weight of the area of the protrusions between the lateral edge regions.
    [0005]
    5. "ABSORBENT ARTICLE", according to claim 4, characterized in that the color difference between the color of the colored element, as seen through the indents of the front sheet, and the color of the colored element, as seen through the edge regions sides of the protrusions, be greater than the color difference between the color of the colored element, as seen through the protrusions of the front sheet, and the color of the colored element, as seen through the indents of the front sheet.
    [0006]
    6. "ABSORBENT ARTICLE", according to any one of the preceding claims, characterized in that the color of the colored element, as seen from the protrusions, is measured at the center in the transverse direction of the protrusions and the color of the colored element, as seen through the indents, be measured at the center in the transverse direction of the setbacks.
    [0007]
    7. "ABSORBENT ARTICLE", according to any one of claims 5 or 6, characterized in that the color difference of the colored element, as seen through the lateral edge regions of the protrusions, is measured in the center in the transverse direction of the edge regions sides of the protrusions.
    [0008]
    8. "ABSORBENT ARTICLE" according to any one of the preceding claims, characterized in that the absorbent has an absorbent member and a cover sheet covering the absorbent member of the absorbent, and at least a portion of the cover sheet is colored, the colored element including the colored part of the cover sheet.
    [0009]
    9. "ABSORBENT ARTICLE", according to any one of claims 1 to 7, characterized in that it further comprises a second sheet provided between the top sheet (60) and the absorbent, and the colored element includes the second sheet.
    [0010]
    10. "ABSORBENT ARTICLE", according to any one of claims 8 or 9, characterized in that the colored element, defined by the cover sheet or by the second sheet respectively, has an area smaller than the absorbent and covers only a part of the absorbent.
    [0011]
    11. "ABSORBENT ARTICLE" according to any one of claims 1 to 7, characterized in that the colored element includes an adhesive for adhering the topsheet (60) to the absorbent, and the adhesive is provided on the surface not in contact with the skin of the top sheet (60) in the area that coincides with the indents of the front sheet, and the width of the area where the adhesive is provided is less than the width of the indents.
    [0012]
    12. "ABSORBENT ARTICLE", according to any one of claims 1 to 7, characterized in that the plurality of projections and the plurality of indents of the top sheet (60) extend in the longitudinal direction of the absorbent article and are alternatively harmonized in the direction cross section.
    [0013]
    13. "ABSORBENT ARTICLE", according to claim 11, characterized in that the plurality of protrusions and the plurality of indents of the topsheet (60) extend in the longitudinal direction of the absorbent article and are alternatively harmonized in the transverse direction, and by the adhesive comprises a plurality of tapes each extending in the longitudinal direction and spaced apart in the transverse direction, each tape underlying the respective indentation and being narrower than the width of each of the indents.
    [0014]
    14. "ABSORBENT ARTICLE", according to any one of the preceding claims, characterized in that it comprises an elastic sheet material colored in a color other than white that is provided on the surface of the top sheet (60) not contacting the user's skin ( a) and in a central area of the topsheet (60) in the transverse direction in a region of the topsheet (60) that encircles the wearer's waist (a).
    [0015]
    15. "ABSORBENT ARTICLE", according to any one of the preceding claims, characterized in that it comprises a disposable diaper.
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    同族专利:
    公开号 | 公开日
    CN103153249B|2016-01-13|
    TWI569785B|2017-02-11|
    AR083170A1|2013-02-06|
    AU2011308363B2|2015-06-11|
    AU2011308363A1|2013-04-11|
    BR112013005364A2|2020-09-29|
    EP2621438B1|2017-05-31|
    EP2621438A1|2013-08-07|
    US20130178811A1|2013-07-11|
    EP2621438A4|2014-08-20|
    TW201228644A|2012-07-16|
    US9205005B2|2015-12-08|
    JP2012075663A|2012-04-19|
    WO2012043842A1|2012-04-05|
    JP5773604B2|2015-09-02|
    CN103153249A|2013-06-12|
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    法律状态:
    2020-10-06| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-02| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-04| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/09/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2010223309A|JP5773604B2|2010-09-30|2010-09-30|Absorbent articles and disposable diapers|
    JP2010-223309|2010-09-30|
    PCT/JP2011/072703|WO2012043842A1|2010-09-30|2011-09-26|Absorbent article and disposable diaper|
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