• 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:
    Highly absorbent nonwoven webs formed from readily available nonwoven materials and having a polyelectrolyte super-absorbent polymeric sorbent coating the individual fibers of the nonwoven web are disclosed. The polymeric sorbent coating absorbs liquid while minimizing occlusion of the interstices of the web.
    公开号:SU1424724A3
    申请号:SU853986092
    申请日:1985-12-05
    公开日:1988-09-15
    发明作者:Энн Горман Ли；Ирвинг Инслей Томас
    申请人:Миннесота Майнинг Энд Мануфакиуринг Компани (Фирма)；
    IPC主号:
    专利说明:


    cm
    The invention relates to medicine, namely, to moisture-absorbing materials used for the manufacture of diapers, sanitary articles, dressings, in devices used in incontinence.
    The purpose of the invention is to increase the absorption capacity of the material to retain the liquid.
    The absorbent web is a nonwoven material of a bulk structure of staple fibers, on which a thin film coating of a super-hygroscopic polymer is formed. The individual fibers of the nonwoven basis are only interconnected only at their intersection points, leaving the interfiber space open, which
    provides the optimum surface area of the sorbent, uniform distribution of the sorbent throughout the web, and also removes the effects of gel blocking when it swells.
    The volume of voids in the absorbent nonwoven fabric is 60-90%, which contributes to the minimum occlusion of the interfiber spaces of the fabric during sorption of the liquid.
    The method for producing an absorbent coating is that the nonwoven web is saturated with a prepolymer, then its excess is removed and the prepolymer is vulcanized on a fiber basis by drying the material.
    Example 1. A prepolymer composition is prepared by mixing 300.9 g of a saponified suspension of ethyl acrylic and methacrylic acid (Dow HD-8587. 01 from Dyu Chemical Company) with an equivalent amount of distilled water from 4.2 g of non-ionic surfactant, the mixture is stirred under gentle heating on a hot plate with the addition of 6.0 g of a crosslinking agent (CX-100 from Polyvinyl Chemical Industries).
    A dry thief sieve is formed from the Hisso Boron x 64 ml cloth with a density of 190 g / m, which is then modified by thermal stabilization of the fibers.
    Samples with a diameter of 4.45 cm are cut out from the obtained web with a punch and impregnated with a sorbent, the excess of which is removed by centrifugation for various times to obtain a weight of sorbent based on 48.60 and 66 wt.%. Image0
    five
    0
    five
    0
    five
    0
    five
    0
    five
    They are vulcanized for 12 hours at 65 ° C.
    The results of determining the absorbing and holding capacity of the samples are presented in the table.
    Example 2. A heat stabilized fibrous web containing 50% polyester 15dpf X 31.5 mm semi-matte and corrugated and 50% polyethylene terephthalate fibers with a polyester resin sheath is used as a base in the absorbent web.
    The results of determining the absorbing and holding capacity of the absorbent cloth are presented in the table.
    Example 3. The absorbent web of Example 1 is characterized in that polyester staple fibers t5dpf x 38.1 mm are used with a vinyl chloride latex binder as the base. Density of a cloth 120g / m.
    The test results are presented in the table.
    EXAMPLE 4. The absorbent web of Example 1 is characterized in that the polyolefin thermally bonded two-component staple fiber 6dpf x X 64 mm type ES, the density of the web 225 g / m2 is used as the basis.
    EXAMPLE 5 An absorbent web of Example 1 is characterized in that a web consisting of 43 wt.% Polyether staple fibers 5,5 dpf x X 31.75 mm semi-matte, elongated and corrugated is used as the base. , 43% by weight of polyester staple fibers of corrugated and 14% by weight of undressed polyester staple fibers 3dpf X 38.1 mm, semi-matte.
    The results of the determination of the absorption and absorption capacity are presented in the table.
    Example 6: The absorbent web of Example 1 is characterized in that a web of staple polypropylene staple fibers 9dpf X 44.45 mm, needle-shaped, the density of the web 240 g / m is used as the basis.
    Example 7. The absorbent web of Example 1 is characterized in that a web is used as the base consisting of 90% polyester staple fiber 1.5 dpf x 38.1 mm and 10% of fully coated polyester fiber 4dpf x 51 mm of type a, after saturation the sheets of the sorbent polymer composition, its excess is removed by forcing the cloth between the rollers at a pressure of 9.1 kg, the vulcanization of the sorbent composition is carried out at 145 ° C in two steps.
    The results of determining the absorbing and holding capacity are presented in the table.
    Determination of absorbency is carried out as follows.
    A test sample of an absorbent web with a diameter of A, 45 cm is placed on a porous plate with pores 25–50 µm in diameter into a filter funnel. By means of a plunger freely moving in the cylindrical part of the funnel, a pressure of 1 kPA is applied to the sample.
    The test fluid at zero hydrostatic pressure is supplied from the reservoir through a siphon device to the upper surface of the porous plate, where the sample of absorbent web is dimensioned.
    The amount of fluid absorbed by the material is determined by the decrease in the volume of fluid in the tank.
    The determination of the holding capacity of the absorbent web is determined as follows.
    1 g of the sample web is placed in a centrifuge basket and immersed in the test tank for 3 hours, then the basket with the sample is removed, dried for 2-3 minutes and placed in a centrifuge and centrifuged for 10 minutes under the influence of centrifugal force
    180 ° C. The sample is removed and the amount of solution retained is determined,
    Synthetic urine having the following composition, in%, is used as a liquid when determining the absorption and holding capacity of samples.
    Calcium chloride
    Magnesium sulfate
    Sodium chloride
    Urea
    Distilled
    water
    0.06 0.10 0.83 1.94
    97.07
    I
    As can be seen from the table of results for determining the properties of absorbent materials, the proposed absorbent web is much superior in absorbing and holding capacity to a known absorbent material.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    An absorbent web made of a non-woven base of staple fibers coated with a super-hygroscopic polymeric sorbent, characterized in that, in order to increase its absorbing and holding capacity, the polymeric sorbent covers each fiber of the base without overlapping the interfiber spaces of the non-woven base and comprises the total mass of the web with an absorptive capacity of 20-40 g of synthetic urine per 1 g of poly-dimensional sorbent.
    48 60 66 35
    50
    Table continuation
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    同族专利:
    公开号 | 公开日
    EP0188091A2|1986-07-23|
    MX162765A|1991-06-26|
    IL77056D0|1986-04-29|
    JPS61160483A|1986-07-21|
    JPH0830306B2|1996-03-27|
    ZA858719B|1987-06-24|
    ES8801098A1|1987-12-16|
    AU577423B2|1988-09-22|
    EP0188091B1|1991-03-13|
    HK75991A|1991-10-04|
    CA1296953C|1992-03-10|
    DE3582148D1|1991-04-18|
    AU5036285A|1986-07-10|
    KR930002566B1|1993-04-03|
    KR860005071A|1986-07-18|
    ES550524A0|1987-12-16|
    CN85109071A|1986-07-16|
    NZ214214A|1989-03-29|
    EP0188091A3|1988-05-04|
    BR8506551A|1986-09-09|
    IN166527B|1990-05-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4407808A1|1994-03-09|1995-09-14|Irnich Rolf Dipl Min|Reusable nappy pants for babies and patients|US3903889A|1973-02-16|1975-09-09|First National Bank Of Nevada|Disposable liquid absorbent products|
    US4059114A|1976-05-12|1977-11-22|Minnesota Mining And Manufacturing Company|Garment shield|
    CA1104782A|1976-06-07|1981-07-14|Robert E. Erickson|Absorbent films and laminates|
    US4235237A|1978-05-08|1980-11-25|Johnson & Johnson|Absorbent open network structure|
    US4263363A|1979-12-20|1981-04-21|Colgate-Palmolive Company|Emulsion-containing absorbent article having improved water holding capacity|
    US4392908A|1980-01-25|1983-07-12|Lever Brothers Company|Process for making absorbent articles|
    US4373519A|1981-06-26|1983-02-15|Minnesota Mining And Manufacturing Company|Composite wound dressing|
    US4443492A|1983-04-18|1984-04-17|Personal Products Company|Rate of absorbency of substrates containing in-situ polymerized monomers|
    BR8403944A|1983-08-15|1985-07-09|Johnson & Johnson|ABSORBENT STRUCTURE; DISPOSABLE NAPPY; HYGIENIC ABSORBENT|
    JPS6198713A|1984-10-20|1986-05-17|Hayashikane Zosen Kk|Cotton-like substance of high water absorption and sanitary napkin and diaper using same|JPH01292180A|1988-05-17|1989-11-24|Mitsubishi Rayon Co Ltd|Production of absorbing material|
    US5972505A|1989-04-04|1999-10-26|Eastman Chemical Company|Fibers capable of spontaneously transporting fluids|
    EP0536308B1|1990-06-28|1994-02-02|Eastman Chemical Company|Absorbant fibers capable of spontaneously transporting fluids|
    ZA92308B|1991-09-11|1992-10-28|Kimberly Clark Co|Thin absorbent article having rapid uptake of liquid|
    GB9510606D0|1995-05-25|1995-07-19|Camelot Superabsorbents Ltd|Process for bonding water-absorbant fibers|
    US7189888B2|2001-12-21|2007-03-13|Kimberly-Clark Worldwide, Inc.|Nonabsorbent surge layer having discrete regions of superabsorbent and method for making|
    US7355091B2|2002-09-18|2008-04-08|Kimberly-Clark Worldwide, Inc.|Elastomeric nonwoven with attached superabsorbent polymer|
    US7338625B2|2002-09-18|2008-03-04|Kimberly-Clark Worldwide, Inc.|Methods of restoring elasticity after stiffening treatments|
    CN100457195C|2002-12-31|2009-02-04|Bsn医疗有限责任公司|Wound dressing|
    DE102014003418B4|2014-03-13|2017-01-05|Carl Freudenberg Kg|Element for light manipulation|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US68782884A| true| 1984-12-31|1984-12-31|
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