Fully degradable polylactic acid fiber spunlace fabric and preparation method thereof

A technology of polylactic acid fiber and spunlace cloth, which is applied to non-woven fabrics, textiles and paper making, etc., can solve the problems of poor biological properties, skin allergies, poor air permeability, etc., and achieve high absorbency, good air permeability, and simple and feasible process. Effect

Inactive Publication Date: 2010-02-17
豆丁乐园(南京)婴儿用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the spunlace fabrics on the market basically use chemical synthetic raw materials, which have poor air permeability and poor biological properties, and are prone to allergic symptoms to the skin.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The polylactic acid fiber with a fiber fineness of 0.6dtex and a length of 38mm is fed, weighed, opened, mechanically carded, cross-laid to form a fiber web, and then passed through 2-4 stages, 4-8 high pressures of 1.5- The fine water flow of 10Mpa passes through the water spray plate with a thickness of 0.5-1.8mm, a width of 20-30mm, and a micropore diameter of 0.1-0.5mm to form a water needle to puncture the front and back of the fiber net, so that the fiber The net is entangled and strengthened, then dried at 70-99°C, and wound into a circle. Obtaining the polylactic acid fiber spunlaced non-woven fabric with a square gram weight of 24-25gsm, the specific data are as follows:

[0017] The thickness is 0.45mm, the transverse tension Tensile Strength-CD (N / 50mm) is 19, and the longitudinal tension Tensile Strength-MD (N / 50mm) is 64.

Embodiment 2

[0019] The polylactic acid fiber with a fiber fineness of 1.0dtex and a length of 45mm is fed, weighed, opened, mechanically carded, cross-laid to form a fiber web, and then passed through 2-4 stages, 4-8 high pressures for 3- The fine water flow of 8Mpa passes through the water spray plate with a thickness of 0.5-1.8mm, a width of 20-30mm, and a micropore diameter of 0.2-0.1mm, and the formed water needles puncture the front and back of the fiber net, so that the fibers The net is entangled and strengthened, then dried at 80-99°C, and wound into a circle. Obtaining the polylactic acid fiber spunlaced non-woven fabric with a square gram weight of 30-35gsm, the specific data are as follows:

[0020] The thickness is 0.55mm, the transverse tension Tensile Strength-CD (N / 50mm) is 24, and the longitudinal tension Tensile Strength-MD (N / 50mm) is 72.

Embodiment 3

[0022] The polylactic acid fiber with a fiber fineness of 1.1dtex and a length of 60mm is fed, weighed, opened, mechanically carded, cross-laid to form a fiber web, and then passed through 2-4 stages, 4-8 high pressures for 2- The fine water flow of 7Mpa passes through the water spray plate with a thickness of 0.5-1.8mm, a width of 20-30mm, and a micropore diameter of 0.2-0.5mm, and the formed water needles puncture the front and back of the fiber net, so that the fibers The net is entangled and strengthened, then dried at 80-99°C, and wound into a circle. Obtaining the polylactic acid fiber spunlaced non-woven fabric with a square gram weight of 35-40gsm, the specific data are as follows:

[0023] The thickness is 0.60mm, the transverse tension Tensile Strength-CD (N / 50mm) is 27, and the longitudinal tension Tensile Strength-MD (N / 50mm) is 82.

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Abstract

The invention discloses a fully degradable polylactic acid fiber spunlace fabric and a preparation method thereof. The spunlace fabric with the thickness of 0.2-1.2mm is prepared by adopting polylactic acid fiber with the fineness of 0.6-1.2dtex and the length of 25-72mm to perform crossing and netting, spunlacing and tangling and drying. The polylactic acid fiber spunlace fabric of the inventionhas high absorptivity, good air permeability and other good performances, and is fully natural without skin irritation and allergic reaction, thus being applicable to the production of the surface material of baby care products and female care products. The preparation method of the invention has simple and practical process, thus being applicable to industrialized production.

Description

technical field [0001] The invention belongs to the field of textiles, and in particular relates to a spunlace nonwoven fabric made of fully degradable polylactic acid fibers and a preparation method thereof. Background technique [0002] In the prior art, common spunlace non-woven fabrics are made of chemical fiber materials, which can cause irritation and allergies after contact with the body, and the water absorption and air permeability are not ideal. [0003] With the strengthening of social environmental awareness, the development and application of biodegradable polymers has attracted great attention. Polylactic acid (PLA) is a representative of chemically synthesized biodegradable lipopolyester. It has good biocompatibility and safety, is non-toxic and harmless to the human body, and gradually degrades in the body and in the natural environment, and finally becomes carbon dioxide and water. In addition, the monomer of polylactic acid is lactic acid, which is fermen...

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): D04H1/46D04H1/435D04H1/492
Inventor 柳铭
Owner 豆丁乐园(南京)婴儿用品有限公司
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