A double reinforced non-woven wiping material and its preparation method

A wiping material and non-woven technology, which is applied in the direction of non-woven fabrics, textiles, and papermaking, can solve the problems of insufficient flexibility, insufficient strength, and insufficient durability of wiping materials, and achieve temperature optimization of water pressure and thermal bonding , soft touch, improved breaking strength and elongation at break

Active Publication Date: 2021-11-23
ZHEJIANG WANGJIN NONWOVENS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, spunlace reinforced wiping materials also have problems such as insufficient durability, resulting in that the strength often cannot meet the demand. On the one hand, the reason is that the main component of non-woven wiping materials is polyester fibers, which contain a large amount of ester bonds. Under the high temperature, a certain degree of hydrolysis will occur, which will cause the defect of insufficient strength of the material in the subsequent process.
And if by increasing the degree of crosslinking, or introducing multifunctional polyacids or polyols, it will lead to insufficient flexibility of the wiping material obtained, and the defects of decreased hand feeling

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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  • A double reinforced non-woven wiping material and its preparation method
  • A double reinforced non-woven wiping material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0042] Add 100 mole parts of terephthalic acid, 80 mole parts of butanediol, and 20 mole parts of neopentyl glycol into the reactor, and prepolymerize at 230°C for 1 hour at a relative pressure of -0.05MPa; then add 5 moles of Parts polyoxypropylene trihydric alcohol, polycondensation catalyst Sb of monomer (the sum of terephthalic acid, butanediol and neopentyl glycol) 0.2wt% 2 o 3 , at 250°C, 0.1MPa polycondensation for 5h, the acid value of the detection system is lower than 10mg KOH / g, stop the reaction, filter to remove impurities, pass through a casting belt, use a pelletizer to slice the polyester, and measure the viscosity average of the obtained polyester The molecular weight is 13200g / mol, and the melting point is 105-110°C.

[0043] The obtained 100 parts of polyester chips and 7 parts of PEG500, 0.8 parts of nano-silver, 1.1 parts of polyvinylpyrrolidone, 0.9 parts of antioxidant 2246 are added to a twin-screw extruder for extrusion granulation. The process of the...

preparation example 2

[0046] Other steps and conditions are the same as in Preparation Example 1, except that the polyoxypropylene triol is replaced by polyoxypropylene tetraol in an equimolar portion, and the viscosity-average molecular weight of the obtained polyester is 16900 g / mol, and the melting point is 110-115°C.

preparation example 3

[0048] Other steps and conditions are the same as Preparation Example 1, the difference is that the amount of each raw material becomes 100 molar parts of terephthalic acid, 70 molar parts of butanediol, 25 molar parts of neopentyl glycol, and 10 molar parts of polyoxypropylene trihydric alcohol , the viscosity-average molecular weight of the finally obtained polyester is 18400g / mol, and the melting point is 108-110°C.

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Abstract

The invention relates to a double-reinforced non-woven wiping material and a preparation method thereof. The double-reinforced non-woven wiping material is made of low-melting-point polyester fiber and viscose fiber respectively opened and carded into a web, and the two-layer web is first spunlace reinforced. It is obtained through thermal bonding and reinforcement; the raw materials for the preparation of the low-melting point polyester fiber include polyester and polyglycol, and the raw materials for the preparation of the polyester include neopentyl glycol and polyether polyol. It is prepared by mixing low-melting point polyester staple fibers and viscose fibers and then undergoing two reinforcement processes of spunlace and thermal bonding. In the preparation of polyester staple fibers, neopentyl glycol is added to polyester, so that polyester can be used in subsequent spinning. Under the high temperature condition of the silk process, it has certain hydrolysis resistance; polyether polyol is added to improve the softness of the obtained wiping material. Using a specific spunlace reinforcement and thermal bonding reinforcement process, the fibers are flexibly entangled and soft to the touch. The resulting wiping material has a firm structure, good durability and is not easy to shed.

Description

technical field [0001] The invention belongs to the technical field of non-woven wiping materials, and in particular relates to a double-reinforced non-woven wiping material and a preparation method thereof. Background technique [0002] In the past few decades, the number and types of wipes on the market have continued to increase, various new products have been introduced into the market, and the entire wipes industry has experienced explosive growth. The application range of wipes has expanded from the initial baby wipes to personal, household, commercial, and industrial uses. One of the fastest growing is household cleaning rags. [0003] The overall global wipes market continues to expand. Different regions have different degrees of economic and technological development. The quantity, type, quality and development of Nonwoven Wipers vary. North America is the world's largest consumer market for nonwoven wipes. The share of wipes for daily consumption is expanding,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4374D04H1/435D04H1/4258D04H1/492D04H1/541D04H1/55
CPCD04H1/4258D04H1/435D04H1/4374D04H1/492D04H1/541D04H1/55
Inventor 王新标朱宏伟王玉萍徐熊耀乔国华许国良李萌朱健民赵柳涛
Owner ZHEJIANG WANGJIN NONWOVENS CO LTD
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