Absorbent laminated sheet

A technology of absorbent and sheet materials, applied in the direction of absorbent pads, medical science, bandages, etc., to achieve the effects of excellent deformation resistance, excellent shape recovery, and improved utilization efficiency

Inactive Publication Date: 2012-07-11
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, both cases of using cellulose fibers as the fibrous base material and using synthetic fibers as the fibrous base material have the same problems as those in Patent Document 2.

Method used

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  • Absorbent laminated sheet
  • Absorbent laminated sheet
  • Absorbent laminated sheet

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0172] -Manufacture of bulky absorbent paper 1-

[0173] (i) As fiber raw materials, 70 parts by mass of unbeaten softwood bleached kraft pulp and 15 parts by mass of PP / PE core-sheath composite fiber 2.2 dtex x 5 mm (manufactured by Daiwa Bou Polytec Co., Ltd., NBF) were used; (ii) As the heat-expandable particles, 15 parts by mass of microcapsules (Matsumoto Microsufea-FUC-36, particle diameter 5-15 μm, expansion initiation temperature 75-85° C. manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) in which a low-boiling point solvent was enclosed were used; And (iii) as an auxiliary agent, 0.5 parts by mass (as an active ingredient) of a cation-modified acrylic copolymer (manufactured by Meisei Chemical Industry Co., Ltd., Failex RC-104) as a heat-expandable particle fixing agent added to the pulp was used , acrylic copolymer (Meisei Chemical Industry Co., Ltd., Fayrex M) 0.3 parts by mass (as an active ingredient); as a paper strength enhancer, use polyamide-epichloroh...

manufacture example 2

[0176] -Manufacture of bulky absorbent paper 2-

[0177] Except for using a wire mesh that does not block the mesh, the rest are the same as in Manufacturing Example 1 to obtain a weight per unit area of ​​50g / m 2 , thickness 1.6mm, density 0.031g / cm 3 Bulk absorbent paper without embossed pattern2.

manufacture example 3

[0179] -Manufacture of water-resistant tissue paper 1-

[0180] In addition to using microcapsules (manufactured by Matsumoto Microcross Fea-FUC-36, manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd.) in which heat-expandable particles are enclosed in a low-boiling point solvent, and cation-modified acrylic copolymer as a heat-expandable particle fixing agent added to pulp, (Fairex RC-104 manufactured by Meisei Chemical Industry Co., Ltd.) and an acrylic copolymer (Fairex M manufactured by Meisei Chemical Industry Co., Ltd.), the rest were carried out in the same manner as Production Example 1 to manufacture water-resistant tissue paper 1 (unit area Weight 50g / m 2 ).

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Abstract

Disclosed is an absorbent laminated sheet which has excellent absorption properties, such as liquid-retaining ability, liquid-diffusing ability and capacity of holding absorbed liquid, and is highly resistant to deformations, in particular, crinkles, wrinkles and so on. The absorbent laminated sheet, which comprises a first sheet layer located in an absorption side, a second sheet layer located in a non-absorption side and a high water-absorbing polymer layer located between the first sheet layer and the second sheet layer, is characterized in that the first sheet and / or the second sheet comprise a bulky paper and said bulky paper contains heat-expandable particles that have been dispersed in the bulky paper and expanded by heating.

Description

technical field [0001] The present invention relates to a laminated absorbent sheet used for absorbent bodies of absorbent articles such as sanitary napkins and diapers. In particular, the present invention relates to a laminated absorbent sheet which exhibits less twist and deformation during use and is excellent in liquid retention, liquid spreadability, and absorption and liquid retention. Background technique [0002] Absorbent articles such as sanitary napkins and disposable diapers are desired to be thin but highly absorbent, and this trend is expected to further increase in the future from the viewpoints of ecology, economy, and quality improvement. In response to such a desire, studies have been conducted to reduce the thickness of absorbent articles by using superabsorbent polymers in absorbent bodies to improve absorbency and to reduce the weight of their fiber materials. [0003] Changes in the structure of absorbents using superabsorbent polymers, from the first...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/49A61F13/53
CPCA61F13/84A61F13/534
Inventor 野崎哲白井努谷尾俊幸
Owner UNI CHARM CORP
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