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Filament non-woven composite material and preparation method thereof

A technology of filament non-woven and composite materials, which is applied in filament/thread forming, textiles, papermaking, non-woven fabrics, etc. It can solve the problems of low breaking strength, stiff hand feeling, and poor hygroscopicity, so as to improve cohesion and increase Large storage space and improved hygroscopicity

Active Publication Date: 2021-04-30
HANGZHOU NBOND NONWOVENS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problems of low breaking strength of existing staple fiber spunlace nonwoven materials, easy chipping, poor hygroscopicity and stiff hand feeling of conventional spunbond spunlace nonwoven materials, the invention provides a filament nonwoven composite material and its preparation The method, the invention uses filaments and ultra-short fibers as raw materials, and produces filament non-woven composite materials through polymer spinning and wet-laid processes, which have high breaking strength, are not easy to fall off, soft to the touch, and have good hygroscopicity. specialty

Method used

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  • Filament non-woven composite material and preparation method thereof
  • Filament non-woven composite material and preparation method thereof

Examples

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preparation example Construction

[0092] A preparation method of filament non-woven composite material, comprising the following steps:

[0093] (1) Preparation of filament fiber web: first polymer slices are melted, and the resulting polymer melt is spun by a spinning device after filtration and metering. After spinning, it is cooled and drawn successively, and then passed through a deformation device (preferably The mechanical deformation device) deforms the obtained filament fiber to make the straight filament fiber into a crimped state; and then lays a web to make a filament fiber web.

[0094] (2) Preparation of ultra-short fiber web: disperse the ultra-short fiber in water for pulping, and use one or more disc mills to process the ultra-short fiber during the dispersion process; use a slit filter to remove impurities and fiber clusters; After the slurry is diluted, it is wet formed by a forming machine (preferably an inclined wire former), and the concentration of the slurry before and after dilution is ...

Embodiment 1

[0104] An ultrafine filament non-woven composite material with a mass per unit area of ​​50g / m 2 . Such as figure 1 As shown, including polyester / polyamide bicomponent synthetic fiber filaments and ultra-short fiber aggregates. Among them, the mass proportion of bicomponent synthetic fiber filament is 40%, and the proportion of ultra-short fiber is 60%; Figure 6 As shown, the cross-sectional shape of the bicomponent synthetic fiber filament is hollow and radial, and the surface of the filament is provided with micropores communicating with the hollow. The filament fineness is 3D; the two components of polyester (PET) and polyamide (PA) are arranged alternately, and the number of arrangements is 16.

[0105] The polyester (PET) / polyamide (PA) bicomponent synthetic fiber filament is a crimped textured filament; the ultra-short fiber 2 is 50% wood pulp and 50% viscose ultra-short fiber; viscose ultra-short fiber The fiber specification is: 1.2D*10mm; the wood pulp and viscos...

Embodiment 2

[0122] A two-component filament non-woven composite material with a mass per unit area of ​​40 g / m 2 . Such as figure 1 As shown, it includes continuous bicomponent synthetic fiber filaments and ultra-short fiber aggregates; wherein, the mass proportion of bicomponent synthetic fiber filaments is 50%, and the proportion of ultra-short fibers is 50%;

[0123] The bicomponent synthetic fiber filament is a crimped textured filament with a fineness of 1.2D, such as Figure 5 As shown, its cross-sectional shape is hexagonal, and the two components are polyethylene (PE) and polypropylene (PP) components; the two components are arranged side by side; the melting point of the polyethylene (PE) component is 120°C.

[0124] The ultra-short fibers 2 are Lyocell (Lyocell, Tencel) ultra-short fibers; the specification of the Lyocell ultra-short fibers is 1.2D*8mm; the Lyocell ultra-short fibers are distributed in a two-component synthetic In the fiber filament; the lyocell ultra-short f...

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Abstract

The invention relates to the field of non-woven materials, and discloses a filament non-woven composite material and a preparation method thereof. The filament non-woven composite material comprises an aggregate prepared by taking filament fibers and ultra-short fibers as raw materials, wherein the filament fibers are synthetic fiber filaments; the ultra-short fibers are hydrophilic ultra-short fibers; and the hydrophilic ultra-short fibers are distributed in the synthetic fiber filaments, and the hydrophilic ultra-short fibers and the synthetic fiber filaments are intertwined and / or the hydrophilic ultra-short fibers are bonded and fixed to the synthetic fiber filaments. The filaments and the ultra-short fibers are used as raw materials, the filament non-woven composite material is produced through polymer spinning and a wet-process net forming process, and the filament non-woven composite material has the advantages of being high in breaking strength, not prone to scrap falling, soft in hand feeling and good in moisture absorption.

Description

technical field [0001] The invention relates to the field of nonwoven materials, in particular to a filament nonwoven composite material and a preparation method thereof. Background technique [0002] Spunlaced nonwovens, also known as spunlaced nonwovens, are made by spraying high-pressure fine water onto one or more layers of fiber webs to entangle the fibers with each other, thereby reinforcing the fiber webs. The spunlace nonwoven technology is flexible entanglement reinforcement, which does not affect the original characteristics of the fibers and does not damage the fibers. Therefore, spunlace nonwovens have the characteristics of soft hand feeling, good air permeability, high hygroscopicity, and low strength loss, and are especially suitable for various sanitary materials. [0003] 201410565949.6 discloses a composite spunlace nonwoven fabric and its preparation method, including a wiping layer and a non-wiping layer, the wiping layer is composed of 100% wood pulp pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H5/00D04H5/03D01D5/253D01D5/247D01D5/32D02G1/00
CPCD04H5/00D04H5/03D01D5/253D01D5/247D01D5/32D02G1/00
Inventor 龚金瑞刘维国
Owner HANGZHOU NBOND NONWOVENS
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