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Non-woven fabric and manufacturing method thereof

A manufacturing method and technology for non-woven fabrics, which are used in textiles and papermaking, layered products, fiber processing, etc., can solve the problems of reducing water pressure resistance, humidity buffering performance, and difficulty in realizing differential transfer of liquid water in non-woven fabrics. Improved water pressure resistance, improved water pressure resistance, and easy control

Inactive Publication Date: 2012-03-14
THE HONG KONG RES INST OF TEXTILES & APPAREL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Although many prior literatures have disclosed how to use different finishing methods and properties of yarns to produce woven or knitted fabrics with liquid water management properties, or to design fabric structures to achieve one-way transfer of liquid water, no fiber How to realize the one-way transmission characteristics of liquid water in non-woven fabrics gathered in a disordered network
[0014] In addition, the existing literature also discloses how to produce functional non-woven fabrics, but none of these production methods solves the following problems: how to make the non-woven fabric possess humidity buffering performance without reducing the water pressure resistance; Cloth does not have the warp and weft orderly structure of traditional fabrics, and it is difficult to realize the differential transmission of liquid water in non-woven fabrics

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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  • Non-woven fabric and manufacturing method thereof
  • Non-woven fabric and manufacturing method thereof
  • Non-woven fabric and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Select single cellulose fiber to produce non-woven fabric with spunlace process in the present embodiment, cloth weight 60g / m 2 .

[0056] Measure the differential water conductivity of non-woven fabrics according to the standard SNT1689-2005, see the test results figure 2 , figure 2 It shows the change with time of the water content of the upper and lower surfaces of the nonwoven fabric. In the figure, curve 1 represents the change of water content on the upper surface of the nonwoven fabric, and curve 2 represents the change of water content on the lower surface of the nonwoven fabric. Depend on figure 2 It can be seen that the non-woven fabric is a kind of hydrophilic non-woven fabric. When the water reaches the upper surface of the non-woven fabric, the water diffuses and penetrates on both surfaces. The water content of the two surfaces is basically the same. The water content is slightly higher than the lower surface.

[0057] Use the spraying method to ca...

Embodiment 2

[0073] The non-woven fabric with a two-layer structure is produced by the needle punching method: the bottom layer is fed with hydrophilic polyester staple fibers with special-shaped cross-sections, which are laid out after carding, and the upper layer is covered with a layer of hydrophobic polypropylene staple fibers (also laid out after feeding and carding). Intertanglement and reinforcement of fibers is achieved by needling. The thickness of the hydrophobic layer of the obtained nonwoven fabric was about 0.5 mm, and the thickness of the hydrophilic layer was about 0.1 mm. After testing, it was found that the increase in the thickness of the hydrophilic layer made the effect of differential water conduction more obvious.

Embodiment 3

[0075] First, the hydrophobic polypropylene staple fiber is functionally finished, and then the nonwoven fabric is manufactured according to the method in Example 2. Functional finishing of hydrophobic polypropylene staple fiber:

[0076] I. Preparing Auxiliaries

[0077] A.WRSC35 (Hong Kong Advanced (Group) Co., Ltd.) 60g / L

[0078] B. Nano protein material (self-made according to the prior patent) 8g / L

[0079] C. Chitosan (Tokyo Chemical Industry Co., Ltd.) 2g / L

[0080] D. Thickener FS-80 (Dandong Star Fine Chemical Co., Ltd.) 5g / L

[0081] E. Cross-linking agent PU-DS70 (Dongguan Tongsen Chemical Co., Ltd., Guangdong Province) 5g / L

[0082] F. Other water;

[0083] II. Spraying

[0084] A. Spray volume: 20g / m 2 ;

[0085] B. Drying: 120°C for 2 minutes, 140°C for 1.5 minutes.

[0086] Figure 9 It is the comparison chart of moisture regain before and after finishing the non-woven fabric hydrophobic layer of this embodiment, as Figure 9 As shown, the moisture r...

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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Abstract

The invention discloses non-woven fabric and a manufacturing method thereof. The non-woven fabric at least comprises a hydrophilic layer and a hydrophobic layer. Hydrophilic fiber coverage on the surface of the hydrophilic layer is larger than 50%. Hydrophobic fiber coverage on the surface of the hydrophobic layer is larger than 50% and is no higher than 95%. The manufacturing method of the non-woven fabric provided by the invention is simple and controllable. The obtained non-woven fabric has a character of liquid water unidirectional transmission. The water pressure resistance of the fabric is improved. Therefore, the fabric is suitable to be used for producing underwear, protective clothing, and diapers.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a non-woven fabric with specific hydrophilic and hydrophobic properties and a manufacturing method thereof. Background technique [0002] Non-woven fabric is a new generation of environmentally friendly materials composed of oriented or random fibers. It has short production cycle, moisture-proof, breathable, water-absorbing and waterproof, good hand feeling, non-directional, flexible, light weight, non-combustible, easy to decompose, and non-toxic. Non-irritating, rich in color, low in price, recyclable and so on. Non-woven fabrics are mainly produced from man-made fibers. 63% of the fibers used in the production of non-woven fabrics worldwide are polypropylene, 23% are polyester, 8% are viscose, 2% are acrylic fibers, and 1.5% are Polyamide and the remaining 3% are other fibers. [0003] Due to the above characteristics, non-woven fabrics are widely used in many fields and a...

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): B32B5/26D06M15/15D06M13/342D06M15/03D06M17/00
Inventor 李翼赵强胡军岩李庆峰董浩然李瀚宇
Owner THE HONG KONG RES INST OF TEXTILES & APPAREL
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