巴西专利BR112012010209B1 ABSORBENT ARTICLE WITH ANNULAR ABSORBENT MEMBER

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专利摘要:
absorbent article with annular absorbent member. the present invention concerns an absorbent article with an annular absorbent member. the absorbent article has a liquid-permeable topsheet, a liquid-impermeable backsheet, an annular absorbent member, and a second absorbent member. the annular absorbent member is disposed between the topsheet and the backsheet. the annular absorbent member absorbs and retains a liquid that passes through the topsheet. the annular absorbent member defines an opening in a central portion thereof. the second absorbent member is disposed between the annular absorbent member and the backsheet. the second absorbent member has a visible area aligned with an opening position of the annular absorbent member.
公开号:BR112012010209B1
申请号:R112012010209-5
申请日:2010-10-29
公开日:2021-06-22
发明作者:Hyong Bom Kim；Eun Jung Kang；Seong Dae Roh
申请人:Yuhan-Kimberly, Limited；
IPC主号:

专利说明:

TECHNICAL FIELD
[001] The present invention relates to an absorbent article such as a personal sanitary absorbent for treating menstrual blood, urinary incontinence and other bodily fluids. PRIOR TECHNIQUE
[002] An article such as a sanitary napkin, a panty protector and a urinary incontinence pad (hereinafter referred to as an "absorbent article"), which absorbs and retains bodily fluid discharged from a wearer's body, is widely known in the technique of personal hygiene. Such an absorbent article typically includes a topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet. The topsheet is configured to be liquid permeable to allow body fluid to permeate the absorbent core to retain body fluid, while the backsheet is configured to be liquid impermeable to prevent body fluid from leaking out to soil the skin or skin. user's underwear.
[003] By way of example of prior art absorbent articles, Figure 1 shows an absorbent article disclosed in International Patent Application Publication No. W01997/001998. Figure 2 is a sectional view taken along line II-II of Figure 1. Referring to Figures 1 and 2, the absorbent article 50 includes a cover 52, a baffle 54, a primary absorbent member 56 and a secondary absorbent member. 58. Cover 52 is liquid permeable and is placed in contact with the user's body. Deflector 54 is liquid impermeable and attaches to the wearer's underwear. Primary absorbent member 56 serves to absorb body fluid through cover 52. Secondary absorbent member 58 is formed with an opening 60 through which a portion of primary absorbent member 56 is exposed.
[004] Meanwhile in the prior art absorbent article 50 shown in Figures 1 and 2, the secondary absorbent member 58 includes a non-absorbent polymer composition of 50-95%, and thus the secondary absorbent member 58 hardly contributes to the spread of the body fluid. That is, the spreading rate of the secondary absorbent member 58 is relatively low. Thus, although the opening 60 has a sufficient capacity to hold a large amount of bodily fluid at a time, the bodily fluid temporarily held in the secondary absorbent member 58 fails to be immediately absorbed by the primary and secondary absorbent members 56, 58. As a result , the user can feel the moisture. Additionally, temporarily retained bodily fluid may leak out of the absorbent article to soil the wearer's skin and underwear. DISCLOSURE OF THE INVENTION
[005] The present invention is aimed at solving the problems described above. The present invention provides an absorbent article that can adequately handle an unexpected sudden excretion of bodily fluid.
[006] In accordance with various embodiments of the present invention, an absorbent article with an annular absorbent member is provided. The absorbent article in accordance with an embodiment may include the following: a liquid permeable topsheet; a liquid impermeable backsheet; an annular absorbent member disposed between the topsheet and the backsheet for absorbing and retaining a liquid passing through the topsheet, the annular absorbent member defining an opening in a central portion thereof, the opening being elongated in a longitudinal direction; and a second absorbent member disposed between the annular absorbent member and the backsheet, the second absorbent member having a visible area aligned with an opening position of the annular absorbent member.
[007] In one embodiment, the second absorbent member may include: a release member that absorbs and releases liquid trapped in an annular absorbent member; and an absorbent body which absorbs liquid released through the release member. In addition, the visible area may include a plurality of dots imprinted on the releasing member or a plurality of perforations defined on the releasing member.
[008] In one embodiment, the annular absorbent member may be configured such that a lower surface of the annular absorbent member facing the second absorbent member absorbs and spreads liquid faster than an upper surface of the annular absorbent member facing the top sheet.
[009] In one embodiment, the annular absorbent member may have a width of 22 to 52 mm and a length of 50 to 150 mm. The annular absorbent member may have a thickness of 0.5 to 3 mm.
[0010] In one embodiment, the opening can have a width of 20 to 50 mm and a length of 30 to 100 mm. An opening internal volume, which is defined as a product of the flat area of the opening and a thickness of the annular absorbent member, can be in a range of 0.5 to 3.0 mL. A distance from an end of the annular absorbent member in a width direction to the opening can be equal to or greater than 2 mm.
[0011] In one embodiment, the annular absorbent member may include an absorbent material being equal to or greater than 50% of a total weight of the annular absorbent member. Furthermore, a density of the absorbent material may be less than that of the second absorbent member. The absorbent material can include cellulosic fibers.
[0012] In one embodiment, a flat area of the opening may be equal to or greater than 20% of an entire flat area of the annular absorbent member.
[0013] In one embodiment, the opening may include a plurality of perforations.
[0014] The absorbent article according to an embodiment includes the annular absorbent member having the opening. In this way, the absorbent article can instantly absorb and retain a large amount of body fluid and can release the body fluid into the absorbent body through the release member. Since the topsheet is partially spaced away from the release member through the opening of the annular absorbent member, the topsheet can dry in a shorter period of time after the introduction of body fluid. Therefore, the absorbent article can provide a feeling of dryness to a wearer.
[0015] Since the opening is elongatedly formed in the longitudinal direction of the absorbent article in the central portion of the annular absorbent member, body fluid passing through the topsheet may spread predominantly in the longitudinal direction rather than the widthwise direction of the article. pad. Therefore, it is possible to prevent the body fluid from spreading too far in the widthwise direction of the absorbent article, thereby leaking in the widthwise direction of the absorbent article.
[0016] Furthermore, since the visible area is formed on the release member to match the opening of the annular absorbent member, the user can visibly observe the visible area through the topsheet. As a result, the user may judge that a capacity of the opening is greater than the actual capacity and may expect the absorbent article to instantly absorb a large amount of body fluid. Therefore, the absorbent article can provide a sense of security to a wearer. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a perspective view showing a prior art absorbent article.
[0018] Figure 2 is a sectional view taken along line II-II of Figure 1.
[0019] Figure 3 is a perspective view showing an absorbent article according to an embodiment with parts of the absorbent article partially cut away.
[0020] Figure 4 is a sectional view taken along O of line IV-IV of Figure 3.
[0021] Figure 5 is a perspective view showing an annular absorbent member shown in Figure 3.
[0022] Figure 6 is a photograph showing artificial blood loaded onto an absorbent article tilted in a longitudinal direction.
[0023] Figure 7 is a photograph showing artificial blood spread after being loaded as shown in Figure 6.
[0024] Figure 8 is a photograph showing artificial blood 5 loaded onto an absorbent article slanted in a widthwise direction.
[0025] Figure 9 is a photograph showing artificial blood spreading after being loaded as shown in Figure 8.
[0026] Figure 10 is a photograph showing a topsheet after artificial blood is loaded into an absorbent article.
[0027] Figure 11 is a photograph showing a backsheet after artificial blood is loaded into an absorbent article. BEST WAY TO CARRY OUT THE INVENTION
[0028] The embodiments of an absorbent article will now be described below with reference to the accompanying drawings. Like reference numbers indicate like or corresponding parts in all views of the drawings.
[0029] As used herein, the term "longitudinal direction" generally refers to a direction that coincides with a normal and reverse direction in a wearer's body when the absorbent article is fitted to a wearer, while the term " width direction" refers to a direction orthogonal to the longitudinal direction. Furthermore, as used herein, the term "top" is generally based on the orientation depicted in the figures, while the term "bottom" generally refers to a direction opposite the top direction.
[0030] Referring to Figures 3 to 5, the absorbent article 100 in accordance with an embodiment of the present invention includes: a liquid permeable topsheet 110; a liquid impermeable backsheet 120; and an annular absorbent member 130 and a second absorbent member 140, 150 disposed between the topsheet 110 and the backsheet 120. The second absorbent member 140, 150 is disposed between the annular absorbent member 130 and the backsheet 120. The absorbent member annular 130 absorbs and retains a liquid passing through the topsheet 110. The annular absorbent member 130 has an aperture 131 defined in a central portion thereof. The opening 131 is elongatedly formed in a longitudinal direction. The second absorbent member has a visible area or recognition area 141' that is aligned with the opening 131 of the annular absorbent member 130. In one embodiment, the second absorbent member 140, 150 may include: a release member 140 that absorbs and releases the liquid retained in an annular absorbent member 130; and an absorbent body 150 which absorbs and collects liquid released through the release member 140 therein. The release member 140 and the absorbent body 150 can be separately configured or integrally formed. The fluid can include a fluid discharged from a user's body (hereafter bodily fluid).
The topsheet 110 serves to pass liquid therethrough and quickly move the liquid to the annular absorbent body 130 which is in contact with the topsheet 110. The topsheet 110 may include a material having wettability, hydrophilicity and porosity.
[0032] The backsheet 120 may be made of a liquid impermeable polyethylene film. The backsheet 120 prevents body fluid retained in the absorbent body 150 from leaking out or seeping out to soil or stain the wearer's skin or underwear.
[0033] The annular absorbent member 130 is disposed below the topsheet 110. The annular absorbent member 130 serves to absorb a portion of the body fluid that passes or permeates through the topsheet 110 and to temporarily retain the same.
[0034] As shown in Figure 5, the single opening 131 is defined in the central portion of the annular absorbent member 130. In another embodiment, the annular absorbent member 130 may include a plurality of perforations, which are arranged to match the shape of the opening 131. , rather than the single opening 131. The opening 131 can contribute to increasing the volume that the annular absorbent member 130 can temporarily hold. Since the topsheet 110 and the release member 140 are spaced apart from each other through the opening 131, the absorbent article 100 can provide a dry feeling to a wearer. In one embodiment, a width W1 of opening 131 can be in a range of 20 to 50 mm and a length L1 of opening 131 can be in a range of 30 to 100 mm. Furthermore, a width W2 of the annular absorbent member 130 can be in a range of 22 to 52 mm, while a width L2 of the annular absorbent member 130 can be in a range of 50 to 150 mm. To provide a physical barrier to the annular absorbent member 130, a distance d between an end or edge in a width direction of the annular absorbent member 130 and the opening 131 may be equal to or greater than 2 mm.
[0035] When the opening 131 is elongatedly formed in the longitudinal direction of the absorbent article 100, the body fluid predominantly tends to be absorbed and spread in the longitudinal direction rather than in the width direction of the absorbent article 100. Therefore, it is possible to prevent the body fluid spreads too far in the direction of the width of the absorbent article 100, thereby leaking out of the absorbent article 100. In one embodiment, a thickness t of the opening 131 (e.g., a thickness of the annular absorbent member 130) may be in a range from 0.5 to 3 mm. Furthermore, an internal volume of the opening 131, which can be defined as the product of a flat area of the opening 131 and the thickness t of the opening, 131, can be in a range of 0.5 to 2.0 ml. In this way, the annular absorbent member 130 can temporarily hold a large amount of body fluid.
[0036] In one embodiment, the annular absorbent member 130 may include a single hydrophilic material, a single hydrophobic material, and a composite of such. In addition, the annular absorbent member 130 can comprise an absorbent material of greater than 50% of the total weight of the annular absorbent member 130. In some embodiments, the absorbent material can include cellulosic fibers. The absorbent material may have a lower density than release member 140 or absorbent body 150. Annular absorbent member 130, in some embodiments, is configured such that a lower surface of annular absorbent member 130 faces toward the release member 140 absorbs and spreads body fluid faster than an upper surface of the annular absorbent member 130 facing the topsheet 110.
The opening 131 of the annular absorbent member 130 allows the body fluid to pass through the topsheet 110 to be quickly absorbed into the absorbent body 150. In this way, additionally, it is possible to prevent the body fluid from leaking or flowing out of the member. of release 140 before the body fluid is absorbed by the absorbent body 150. That is, the annular absorbent member 130 can serve as the physical barrier for the body fluid. The annular absorbent member 130 can ensure the flexibility of the absorbent article 100 and maintain an original shape of the absorbent article 100. To this end, in some embodiments, the flat area of the opening 131 is equal to or greater than 20% of an entire flat area. of the annular absorbent member 130. The annular absorbent member 130 may have a rectangular shape with a rectangular opening in accordance with a design of the absorbent article.
[0038] The releasing member 140 not only releases the body fluid held in the annular absorbent member 130 towards the absorbent body 150, but absorbs a portion of the body fluid at the same time. The release member 140 may include a visible area (or a recognition area) 141 that is formed to match the shape of the opening 131 of the annular absorbent member 130, which is aligned with the position of the opening 131.
[0039] In one embodiment, visible area 141 may include a plurality of dots printed on the top surface of release member 140. In addition, visible area 141 may include a plurality of perforations (or small holes) formed in release member 140. As shown in Figure 3, the plurality of dots or the plurality of perforations can be arranged to match or match the shape of opening 131. If the visible area includes dots, such dots can be printed in a more enhanced color than the sheet. top (110) of the release member 140. If the dots with a more enhanced color are seen through the topsheet 110 together with the opening 131, the user may consider the depth of the opening 131 (or a height of the annular absorbent member 130) ) is greater than an actual depth or height. Therefore, the user can expect the opening 131 to have a large capacity and the absorbent article to absorb a large amount of body fluid. This way the user can feel secure. Furthermore, as for the visible area 141 including the perforations, the user can perceive that the capacity of the opening 131 seen through the top sheet 110 has a greater capacity and therefore can feel secure. In addition, the perforations can substantially increase the capacity of the opening 131. As a result, body fluid retained in both the opening 131 and the perforations can be rapidly released to the absorbent body 150. In other embodiments, the visible area 141 can include various patterns for increasing an aesthetic feel of the absorbent article 100.
[0040] The absorbent body 150 is disposed between the release member 140 and the backsheet 120 to quickly absorb and collect the body fluid at that point. The absorbent body 150 can include a material that is compressible, flexible and non-stimulating to the wearer's skin.
[0041] In one embodiment, the absorbent article 100 may additionally include a groove portion 160 to effectively prevent clotting and leakage of body fluid. The groove portion 160 may be formed by pressing the topsheet 110, the release member 140 and the absorbent body 150. The groove portion 160 may include: a first groove portion 161 positioned along the release member 140 and the body absorbent 150; and a second groove portion 162 adjacent to the first groove portion 161 in the longitudinal direction of the absorbent article 100. The first groove portion 161 may have a curved loop shape and the second groove portion 162 may have the shape of discontinuous dots.
[0042] In the following, descriptions will be made on the performance of the absorbent article according to an embodiment based on the results of tests carried out together with the absorbent articles according to a comparative example. Artificial blood was used in the tests as the liquid to be absorbed by the absorbent articles. The blood of animals such as an ox or a horse can be used as the liquid to be absorbed. ABSORPTION TIME
[0043] Table 1 provided below shows the absorption time when artificial blood is loaded into different types of absorbent articles under the same conditions. Table 1

[0044] It can be seen from Table 1 that the absorption time in the absorbent article (A1) according to one modality decreased by about 30 to 50% compared to comparative examples 1 and 2 (B1, B2) . Change in absorption time associated with repetitive loading
[0045] Table 2 provided below shows the absorption time when 3 ml of artificial blood is loaded three times into different types of absorbent articles under the same conditions. Table 2

[0046] As for Comparative Example 1, the second and third absorption times increased by about twice and about three times compared to the first absorption time. In contrast, in the absorbent article (A1) according to an embodiment, the second absorption time was almost equal to the first absorption time. In addition, the third soak time increased about twice as compared to the first or second soak time. Therefore, although artificial blood is repetitively loaded into the absorbent article (A1), the absorption time in the absorbent article (A1) has not significantly increased. Function of the annular absorbent member as a physical barrier
[0047] Figure 6 illustrates that artificial blood was loaded into the absorbent article and tilted in the longitudinal direction. Figure 7 illustrates that artificial blood spreads after being loaded as shown in Figure 6. Figure 8 illustrates artificial blood being loaded into the absorbent article angled in the width direction. Figure 9 illustrates artificial blood spreading after being loaded as shown in Figure 8.
[0048] In Figures 6 and 7, artificial blood was loaded into the absorbent article, which was angled approximately 30 degrees in the longitudinal direction of the absorbent articles.
[0049] As can be clearly seen from the comparison in Figure 7, in the comparative example 2 (B2), the artificial blood is flowed down in a direction of inclination of the absorbent article after being loaded. However, very little artificial blood in the absorbent article (A1) according to one modality has flowed out of the opening of the annular absorbent member.
[0050] Referring to Figures 8 and 9, artificial blood was loaded into the absorbent article, which was angled approximately 30 degrees in the direction of the width of the absorbent articles. As is clear from the comparison in Figure 9, in comparative example 2 (B2), the artificial blood flowed downwards in a tilting direction of the absorbent article after loading. However, very little artificial blood in the absorbent article (A1) according to one modality has flowed out of the opening of the annular absorbent member.
[0051] Therefore, it is found that the absorbent annular member of the absorbent article according to an embodiment functions as a physical barrier. Absorbent article flexibility
[0052] Table 3 provided below shows the forces required to deform different types of absorbent article under the same conditions. Table 3

[0053] The force required to deform the absorbent article (Ai) according to one modality has decreased by about 50% compared to that of comparative example 1 (B1). That is, the flexibility of the absorbent article (A1) has increased by approx 50% compared to that of comparative example 1 (B1). Therefore, when a wearer actively moves or acts while putting on the absorbent article, such flexibility of the absorbent article can provide a closer fit for the wearer. Spreading the artificial blood into an absorbent article
[0054] Figure 10 illustrates the topsheets of absorbent articles after loading the artificial blood. Figure 11 illustrates the backsheets of the absorbent articles after loading the artificial blood.
[0055] As illustrated in Figures 10 and 11, the artificial blood in comparative examples 1 and 2 (B1, B2) spreads both in the longitudinal direction and in the width direction of the respective absorbent articles. Furthermore, in comparative examples 1 and 2 (B1, B2), the magnitude of the scattering in the longitudinal direction of the absorbent article was almost equal to that in the width direction. In particular, the artificial blood in comparative example 2 (B2) spreads in both directions of the absorbent article in the width direction. In the absorbent article (A1) according to an embodiment, however, the artificial blood spreads predominantly in the longitudinal direction rather than the widthwise direction. That is, in the absorbent article (A1) according to an embodiment, the body fluid can spread maximally towards both ends of the releasing member and the absorbent body in the longitudinal direction. Therefore, the absorbent article (Ai) according to an embodiment can reduce the absorption time and increase the absorption capacity. Furthermore, the absorbent article (A1) according to an embodiment can prevent body fluid from spreading too far in the widthwise direction of the absorbent article and leaking out in the widthwise direction of the absorbent article.
[0056] Although the present invention has been shown and described under the foregoing embodiments, the present invention should not be limited thereto. It will be apparent to those skilled in the art that various alternations or modifications can be made without departing from the scope of the present invention.

权利要求:
Claims (18)
[0001]
1. An absorbent article (100) having an annular absorbent member comprising: a liquid permeable topsheet (110); a liquid impermeable backsheet (120); an annular absorbent member (130) disposed between the topsheet (110) and the backsheet (120) capable of absorbing and retaining liquid passing through the topsheet (110), the annular absorbent member (130) having an opening (131 ) longitudinally elongated in a central portion thereof; and characterized in that it comprises a second absorbent member (140, 150) disposed between the annular absorbent member (130) and the backsheet (120), wherein the second absorbent member (140, 150) comprises: a release member ( 140) for absorbing and releasing liquid retained in the annular absorbent member (130), and a separate absorbent body (150) to absorb liquid released through the releasing member (140); the second absorbent member (140, 150) having a visible area (141) aligned with a position of said opening (131) of the annular absorbent member (130), wherein the visible area (141) includes a printed pattern that is printed on. the releasing member (140); and wherein the second absorbent member (140, 150) further comprises a groove portion (160), wherein the groove portion (160) surrounds the annular absorbent member (130).
[0002]
2. Absorbent article (100) according to claim 1, characterized in that the annular absorbent member (130) is configured such that a lower surface of the annular absorbent member (130) faces the second absorbent member (140 , 150) absorbs and spreads liquid faster than an upper surface of the annular absorbent member (130) facing the topsheet (110).
[0003]
3. Absorbent article (100) according to claim 1, characterized in that the annular absorbent member (130) has a width (W2) from 22 to 52 mm and a length (L2) from 50 to 150 mm.
[0004]
4. Absorbent article (100) according to claim 1, characterized in that the annular absorbent member (130) has a thickness of 0.5 to 3 mm.
[0005]
5. Absorbent article (100) according to claim 1, characterized in that the opening (131) has a width (W1) of 20 to 50 mm and a length (L1) of 30 to 100 mm.
[0006]
6. Absorbent article (100) according to claim 1, characterized in that an internal volume of the opening (131) is in a range of 0.5 to 3.0 mL, the internal volume being defined as a product of a flat area of the opening (131) and a thickness of the annular absorbent member (130).
[0007]
7. Absorbent article (100) according to claim 1, characterized in that a distance from one end of the annular absorbent member (130) in a width direction to the opening (131) is equal to or greater than 2 mm.
[0008]
8. Absorbent article (100) according to claim 1, characterized in that the annular absorbent member (130) comprises an absorbent material being equal to or greater than 50% of a total weight of the annular absorbent member (130) .
[0009]
9. Absorbent article (100) according to claim 8, characterized in that a density of the absorbent material is less than that of the second absorbent member (140, 150).
[0010]
10. Absorbent article (100) according to claim 8, characterized in that the absorbent material comprises cellulosic fibers.
[0011]
11. Absorbent article (100) according to claim 1, characterized in that a flat area of the opening (131) is equal to or greater than 20% of an entire flat area of the annular absorbent member (130).
[0012]
12. Absorbent article (100) according to claim 1, characterized in that the visible area (141) is formed to correspond to the shape of the opening (131) of the annular absorbent member (130).
[0013]
13. Absorbent article (100) according to claim 1, characterized in that the printed pattern includes a plurality of dots.
[0014]
14. Absorbent article (100) according to claim 1, characterized in that the visible area (141) includes a perforated pattern.
[0015]
15. Absorbent article (100) according to claim 14, characterized in that the perforated pattern comprises a plurality of perforations.
[0016]
16. Absorbent article (100) according to claim 1, characterized in that the groove portion (160) compresses the topsheet (110) and the release member (140).
[0017]
17. Absorbent article (100) according to claim 16, characterized in that the groove portion (160) further compresses the absorbent body (150).
[0018]
18. Absorbent article (100) according to claim 1, characterized in that the groove portion (160) surrounds the annular absorbent member (130).

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法律状态:
2020-09-08| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2021-01-05| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|

2021-05-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2021-06-22| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/10/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, , QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO. |

优先权:

申请号 | 申请日 | 专利标题

KR10-2009-0104382|2009-10-30|

KR1020090104382A|KR101651675B1|2009-10-30|2009-10-30|Absorbent article with annular absorbent member|

PCT/KR2010/007528|WO2011053044A2|2009-10-30|2010-10-29|Absorbent article with annular absorbent member|

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