Absorbent sheet, process for producing the same, and absorbent article using the same

An absorbent and superabsorbent technology, applied in the field of absorbent products, can solve the problems of inability to produce absorbent products, achieve high absorption performance, simplify the manufacturing process, and reduce the incidence of leakage

Inactive Publication Date: 2003-12-10
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, such absorbent members cannot be made into thinner absorbent articles

Method used

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  • Absorbent sheet, process for producing the same, and absorbent article using the same
  • Absorbent sheet, process for producing the same, and absorbent article using the same
  • Absorbent sheet, process for producing the same, and absorbent article using the same

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0359] Preparation of bulky cellulose fibers

[0360] 100 g of alkalized pulp having an average fiber length of 2.35 mm, a fiber roughness of 0.36 mg / m, and a fiber roundness of 0.80 in the fiber cross-section (“Porosanier-J” by ITT) was dispersed in 1000 g of an aqueous solution. Produced by Rayonier Inc.), said aqueous solution contains 5% of dimethylolethylene urea (crosslinking agent "Sumitex resin NS-19", produced by Sumitomo Chemical Co., Ltd.) and 3% of metal salt catalyst ("Sumitex Accelerator X-110", produced by Sumitomo Chemical Co., Ltd.), thereby impregnating the alkalized pulp with a crosslinking agent.

[0361] The aqueous crosslinking agent solution was removed from the alkalized pulp when the amount of the aqueous crosslinker solution was reduced to 200% based on the alkalized pulp. The alkalized pulp was heated in an electric heater at 135° C. for 10 minutes to crosslink cellulose in the alkalized pulp, thereby obtaining crosslinked alkalized pulp (r...

preparation Embodiment 2

[0363] Preparation of bulky cellulose fibers

[0364] A crosslinked pulp with an average fiber length of 2.38 mm, a fiber roughness of 0.32 mg / m, and a fiber roundness of 0.30 in the fiber cross-section was prepared (“high bulking additive HBA-S” by Weyerhouser Paper Co. production) (known as cellulose fibers (B)).

preparation Embodiment 3

[0366] Preparation of bulky cellulose fibers

[0367] An alkalized pulp ("Porosanier-J", produced by ITT Rayonier Inc.) (referred to as Cellulose fibers (C)). Cellulose fibers (C) are uncrosslinked fibers.

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Abstract

The absorbent sheet comprising at least hydrophilic fibers and thermally fusible bonding fibers or a strengthening assistant, and a superabsorbent polymer is characterized in that the superabsorbent polymer is not present on an absorbent surface of the absorbent sheet for absorbing liquid but distributed inside the absorbent sheet, and is adhered and fixed to the hyrophilic fibers constituting the absorbent sheet, the superabsorbent polymer is spread at an amount of 5 to 300 g per 1 m2 of the absorbent sheet and the absorbent sheet has thickness of 0.3 to 1.5 mm.

Description

technical field [0001] The present invention relates to an absorbent sheet suitable for use in sanitary napkins, sanitary pads, disposable hand towels, medical pads, nursing pads, liquid absorbent sheets, kitchen paper towels, household cleaning towels, pet towel pads, etc. A method of making the sheet, and an absorbent article made from it. Background technique [0002] Many methods are known for immobilizing superabsorbent polymers in absorbent structures to obtain absorbent sheets. For example, USP3070095 discloses a method such as Figure 24 As shown, the method includes placing superabsorbent polymer 116 on fabric 110, placing another fabric 111 on top of it, and pressing the superabsorbent polymer into the fabric with a roller. However, according to this method, the superabsorbent polymer is fixed only in the layer between two fabric layers, so this method cannot be used to fix a large amount of superabsorbent polymer. if Figure 24 If the absorbent sheet shown is us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/15D21H21/22D21H27/32
CPCA61F13/534Y10T442/653D21H21/22Y10T442/673D21H27/32Y10T442/659A61F2013/15016A61F2013/15536A61F13/15203A61F2013/530218A61F13/53713
Inventor 正木一路久保田良仁市川英知加贺野井真理中西稔滨岛美次山本耕裕河崎宏典草川哲哉
Owner KAO CORP
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