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Water-disintegrable nonwoven fabric and process for producing same

A manufacturing method and technology of non-woven fabrics, which are applied in textiles and papermaking, non-woven fabrics, synthetic cellulose fibers, etc., can solve the problems of pipe blockage and insufficient ease of unraveling, and achieve good texture, good ease of unraveling, etc. The effect of high density and high density

Inactive Publication Date: 2018-08-31
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the water disintegrating nonwoven fabric described in Patent Document 1 is firmly interwoven regenerated cellulose fibers, for example, depending on the pipe thickness of toilet pipes, etc., the pipes may be clogged, and the ease of untwisting is not sufficient.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Water-disintegrable nonwoven fabric and process for producing same
  • Water-disintegrable nonwoven fabric and process for producing same
  • Water-disintegrable nonwoven fabric and process for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] use according to figure 1 The nonwoven fabric manufacturing apparatus 1 of one embodiment shown produced the nonwoven fabric of Example 1. 80% by weight of unbeaten conifer sun-dried kraft pulp (NBKP, CSF: 770 mL) and 20% by mass of rayon fibers (fiber length 3 mm and fineness 0.3 dtex, corona manufactured by Yamatobo Rayon Co., Ltd.) were prepared. raw material slurry. Then, the slurry was supplied onto a mesh forming belt (OS80 manufactured by Nippon Huircon Co., Ltd.) using a raw material supply head, and the slurry accumulated on the mesh forming belt was dehydrated by a suction box to form a mesh. The water content of the mesh sheet at this time was 80%. After that, water streams of equal energy were sprayed on the mesh from two nozzles. The nozzle hole diameter of each nozzle is 92μm, the nozzle hole pitch is 0.5mm, and the injection pressure at the tip of the nozzle is 30kg / cm 2 , the distance between the tip of the nozzle and the upper surface of the mesh is...

Embodiment 2

[0083] A nonwoven fabric was produced in the same manner as in Example 1 except that the fiber length of the rayon fibers was 4 mm.

Embodiment 3

[0085] A nonwoven fabric was produced in the same manner as in Example 1 except that the amount of rayon fibers was 15% by mass based on the total amount of pulp and rayon fibers.

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Abstract

Disclosed is water-disintegrable nonwoven fabric which comprises 15-30 mass% regenerated cellulose fibers having a fiber length of 3-4 mm and a fineness of 0.3 dtex or less and 70-85 mass% pulp, has abasis weight of 35-50 g / m2, has a tendency to disentanglement of 100 seconds or less when examined by a disentanglement test according to JIS P 4501:1993, and has a wet tensile strength of 1.2 N / 25 mm or greater. The water-disintegrable nonwoven fabric combines wet tensile strength during use with water disintegrability after use.

Description

technical field [0001] The present invention relates to a hydrolyzable nonwoven fabric and a method for producing the same. Background technique [0002] Conventionally, it has been proposed to use a water-disintegratable nonwoven fabric as a top sheet of sanitary products such as wipes such as wet tissues and cleaning wipers, disposable diapers, and sanitary napkins. The water-disintegratable non-woven fabric used in this application needs to balance the prescribed hydrolyzability so as to be able to be washed away by water after use and the prescribed wet strength for use. [0003] For example, Patent Document 1 describes a water-collapsible nonwoven fabric that has sufficient strength in a wet state and collapses upon contact with a large amount of water. The water-collapsible nonwoven fabric described in Patent Document 1 is composed of regenerated cellulose fibers and pulp with a fiber length of 4 to 20 mm. The fibers are interwoven with each other by high-pressure wat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/26D04H1/28D04H1/492
CPCD04H1/26D04H1/28D04H1/492D21H13/08
Inventor 小西孝义
Owner UNI CHARM CORP