Airlaid composite sheet material

A composite material, air-laid technology, used in synthetic resin layered products, sanitary napkins, bandages, etc., can solve problems such as prolonged fluid exposure, and achieve improved comfort, good reverse osmosis resistance, soft and fluffy touch. Effect

Pending Publication Date: 2020-12-22
FITESA CHINA AIRLAID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may localize the fluid to one area of ​​the absorbent core and result in prolonged exposure of the wearer's skin to the fluid

Method used

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  • Airlaid composite sheet material
  • Airlaid composite sheet material
  • Airlaid composite sheet material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0236] Inventive Example 1 was prepared by depositing two airlaid layers on a previously prepared ATB-1 fabric. The two airlaid layers included a homogeneous fiber mixture of pulp-1 fibers and PE / PET-1 fibers. After depositing the two airlaid layers, a coating of latex formulation was applied to the surface of the outermost airlaid layer. The composite sheet is then sequentially passed through a series of ovens to bond the fibers to each other and to dry and cure the latex formulation. The dry add-on weight of the latex layer was 2% by weight, based on the total weight of Inventive Example 1. The basis weight of the resulting composite sheet is 70g / m 2 .

[0237] The composite material sheet of Inventive Example 1 has the structure shown in Table 1 below.

[0238] Table 1: Structure and composition of the composite material sheet of Invention Example 1

[0239]

Embodiment 2

[0241] Inventive Example 2 was prepared by depositing two airlaid layers onto a previously prepared ATB-2 fabric. The two airlaid layers included a homogeneous fiber mixture of pulp-1 fibers and PE / PET-1 fibers. After depositing the two airlaid layers, a coating of latex formulation was applied to the surface of the outermost airlaid layer. The composite sheet is then sequentially passed through a series of ovens to bond the fibers to each other and to dry and cure the latex formulation. The dry add-on weight of the latex layer was 2% by weight, based on the total weight of Inventive Example 2. The obtained composite sheet has a basis weight of 75 g / m 2 .

[0242] The composite material sheet of Inventive Example 1 has the structure shown in Table 2 below.

[0243] Table 2: Structure and composition of the composite material sheet of Invention Example 2

[0244]

Embodiment 3

[0246] Inventive Example 3 was prepared by depositing two airlaid layers onto a previously prepared ATB-2 fabric. The two airlaid layers included a homogeneous fiber mixture of pulp-1 fibers and PE / PET-1 fibers. After depositing the two airlaid layers, a coating of latex formulation was applied to the surface of the outermost airlaid layer. The composite sheet is then sequentially passed through a series of ovens to bond the fibers to each other and to dry and cure the latex formulation. The dry add-on weight of the latex layer was 2% by weight, based on the total weight of Inventive Example 3. The obtained composite sheet has a basis weight of 85 g / m 2 .

[0247]The composite material sheet of Invention Example 3 has the structure shown in Table 3 below.

[0248] Table 3: Structure and composition of the composite material sheet of Invention Example 3

[0249]

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Abstract

Provided is a composite sheet that is particularly useful as an AQDL component in absorbent articles. The composite sheet includes a fluid acquisition component and an airlaid component. The airlaid component may include one or more airlaid layers that are successively formed overlying each other. Each of the airlaid layers are adjacent to, and in direct contact with, immediately adjacent layers of the airlaid component so that adjacent layers are in fluid communication with respect to each other. The fluid acquisition component includes a nonwoven fabric comprising a carded nonwoven fabric comprised of a plurality of staple fibers that are air through bonded to each other to form a coherent nonwoven fabric. The airlaid layer(s) include a blend of cellulose and non-cellulose staple fibers.The staple fibers may be bicomponent fibers having a polyethyelene sheath and a polypropylene or polyethylene terephthalate core, and mixtures of such fibers.

Description

technical field [0001] The present invention relates generally to composite sheets for absorbent articles, and more particularly to composite sheets comprising a porous fluid acquisition layer and an airlaid layer comprising cellulosic staple fibers and non-cellulosic staple fibers. blend of fibers. Background technique [0002] Nonwoven composite sheets formed from combinations of various natural and synthetic fibers are known for use in the manufacture of absorbent articles. Such absorbent articles may include disposable hygiene products such as diapers, feminine hygiene products, adult incontinence products, and the like. [0003] A typical absorbent article generally comprises a multilayer structure having an inner layer (also called a topsheet) defining an inner surface in contact with the wearer's skin, an acquisition / distribution layer (also called an AQDL portion) disposed beneath the topsheet, comprising An absorbent layer of material selected to absorb fluids, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/15A61F13/53A61F13/533A61F13/534A61F13/539B32B5/22
CPCB32B3/266B32B5/02B32B9/047B32B27/12B32B37/1009B32B37/12B32B38/06B32B38/164B32B2307/726B32B2262/06B32B2262/0276B32B2262/0253B32B2262/0223B32B2255/02B32B2255/26B32B2555/02B32B2553/00D04H1/732B32B3/26B32B2262/062B32B7/12B32B2262/14B32B3/06B32B2307/72B32B2262/067B32B3/08B32B2307/54B32B2262/12B32B2262/023B32B7/04B32B5/26B32B3/30B32B2307/718B32B2262/0284B32B5/022B32B2250/20B32B7/022B32B2262/0261B32B2307/732B32B2255/28A61F13/537A61F13/15658B32B5/12B32B5/08B32B7/05B32B2250/02B32B2307/728D04H1/425D04H1/4291D04H1/435D04H1/5412A61F13/472A61F13/49D04H1/559D06N3/0011D06N3/0013D06N3/0036D06N3/0038D06N2201/042D06N2209/126D06N2211/24B32B37/06B32B2310/0454B32B2323/10B32B2323/04B32B2367/00B32B2037/243B32B2319/00B32B2309/10
Inventor 任继春王娟冯勋旺屈义俭马克·纽曼
Owner FITESA CHINA AIRLAID
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