Method for manufacturing superfine fiber polyamide non-woven fabric mirror surface leather

A manufacturing method and technology of non-woven fabrics, applied in the direction of textiles and papermaking, textile material processing, chemical instruments and methods, etc., can solve the problem of not much improvement in the flatness of the base fabric, the flatness of the creases of difficult PU leather, and the increase of non-woven fabrics. Solve the problems of textile peeling and tearing strength, etc., to achieve the effect of broad market space and high strength

Active Publication Date: 2012-06-27
WUXI DOUBLE ELEPHANT MICRO FIBER MATERIAL
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The development of ultra-fine fiber non-woven fabric tanning technology makes up for these shortcomings, but ultra-fine fiber non-woven fabrics are generally repeatedly punctured by needle punching machines, and the curling of the fibers is driven by the up and down reciprocating movement of the hook of the needle punching needle. The crests and troughs are entangled with each other, so that the fibers have better cohesion and entanglement, which increases the peeling, tearing, and strength of the non-woven fabric. After wet impregnation, toluene reduction, oiling and drying, and kneading, the flatness of the base fabric does not improve much, and it is difficult to compare with the crease flatness of PU leather, especially the most difficult mirror surface encountered by dry veneering. Manufacturing of leather

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

[0029] Embodiment one: a kind of manufacture method of ultra-fine denier polyamide non-woven mirror leather, comprises following processing steps:

[0030](1) Preparation of superfine denier sea-island fibers: Polyamide 6 is used as the island component, and low-density polyethylene is used as the sea component. The polyamide 6 and low-density polyethylene are mixed and stirred evenly according to the mass ratio of 40:60, and the stirring speed is 30 rpm, stirring time is 15 minutes; through the single-screw spinning machine melted and stirred into the sea-island spinneret assembly, extruded through the distribution plate and spinneret to form filaments, the temperature of the first zone of the screw extruder is 90 °C, the temperature in the second zone is 180°C, the temperature in the third zone is 250°C, the temperature in the fourth zone is 280°C, the temperature in the fifth zone is 280°C, the temperature in the sixth zone is 285°C, the temperature in the seventh zone The ...

Embodiment 2

[0041] Embodiment two: a kind of manufacture method of ultra-fine denier polyamide non-woven mirror leather, comprises following processing steps:

[0042] (1) Preparation of superfine denier sea-island fibers: Polyamide 6 is used as the island component, and low-density polyethylene is used as the sea component. The polyamide 6 and low-density polyethylene are mixed and stirred evenly at a mass ratio of 60:40, and the stirring speed is 50 rpm, stirring time is 20 minutes; through the single-screw spinning machine melted and stirred into the sea-island spinneret assembly, extruded through the distribution plate and spinneret to form filaments, the temperature of the first zone of the screw extruder is 95 °C, the temperature in the second zone is 185°C, the temperature in the third zone is 255°C, the temperature in the fourth zone is 285°C, the temperature in the fifth zone is 285°C, the temperature in the sixth zone is 290°C, the temperature in the seventh zone The temperature...

Embodiment 3

[0053] Embodiment three: a kind of manufacture method of ultra-fine denier polyamide non-woven mirror leather, comprises following processing steps:

[0054] (1) Preparation of superfine denier sea-island fibers: Polyamide 6 is used as the island component, and low-density polyethylene is used as the sea component. Mix polyamide 6 and low-density polyethylene according to the mass ratio of 50:50 and stir evenly. The stirring speed is 40 rpm, stirring time is 16 minutes; through the single-screw spinning machine melted and stirred into the sea-island spinneret assembly, extruded through the distribution plate and spinneret to form filaments, the temperature of the first zone of the screw extruder is 90 °C, the temperature in the second zone is 190°C, the temperature in the third zone is 245°C, the temperature in the fourth zone is 275°C, the temperature in the fifth zone is 280°C, the temperature in the sixth zone is 285°C, the temperature in the seventh zone The temperature of...

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 relates to a method for manufacturing superfine fiber polyamide non-woven fabric mirror surface leather, which comprises the following steps of: (1) making a superfine sea-island fiber; (2) manufacturing a non-woven fabric; (3) solidifying and foaming the non-woven fabric through an impregnation liquid and a dimethylformamide solution to obtain porous elastomer polyester type polyurethane non-woven fabric wet-process substrate; (4) leading the porous elastomer polyester type polyurethane non-woven fabric wet-process substrate to pass through a toluene tank to obtain a polyamide leather substrate; (5) predrying the polyamide leather substrate, impregnating the leather in a softening liquid, and drying and rubbing the polyamide leather substrate; (6) polishing the polyamide leather substrate to obtain a high-smoothness polyamide leather substrate; (7) successively applying a surface-layer coating, a middle-layer coating and a bonding-layer coating on release paper; and (8)superposing and drying the release paper and the high-smoothness polyamide leather substrate; and releasing the release paper to obtain the non-woven fabric mirror surface leather. With the method, the high-strength high-smoothness non-woven fabric mirror surface leather can be obtained, and the smoothness and the strength of the non-woven fabric mirror surface leather are far above those of PU (Poly Urethane) leather.

Description

technical field [0001] The invention relates to a method for manufacturing non-woven mirror leather, in particular to a method for manufacturing ultra-fine denier polyamide non-woven mirror leather. Background technique [0002] The technology of synthetic leather, especially the production technology of PU leather, is relatively mature, but the hand feeling and physical properties (peeling, tearing, strength, hydrolysis resistance) of PU leather are the Achilles' heels restricting its development to high-end products. The development of ultra-fine fiber non-woven fabric tanning technology makes up for these shortcomings, but ultra-fine fiber non-woven fabrics are generally repeatedly punctured by needle punching machines, and the curling of the fibers is driven by the up and down reciprocating movement of the hook of the needle punching needle. The crests and troughs are entangled with each other, so that the fibers have better cohesion and entanglement, which increases the...

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): D06N3/14B32B27/08B32B27/40D04H1/4291D04H1/4334D04H1/46D06B15/00D06C19/00D06C11/00D06M15/568D06M101/34D06M101/20
Inventor 尉雷刘安秦李兴振王华张鹏
Owner WUXI DOUBLE ELEPHANT MICRO FIBER MATERIAL
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