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Preparation method of high-density and high-physical-property suede superfine fiber artificial leathers

A technology of microfiber, artificial leather, applied in chemical instruments and methods, synthetic resin layered products, textiles and papermaking, etc.

Inactive Publication Date: 2013-05-22
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to produce suede, imitation suede and dyed superfine fiber artificial leather products with high physical properties and good color fastness.

Method used

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  • Preparation method of high-density and high-physical-property suede superfine fiber artificial leathers
  • Preparation method of high-density and high-physical-property suede superfine fiber artificial leathers
  • Preparation method of high-density and high-physical-property suede superfine fiber artificial leathers

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preparation example Construction

[0023] Such as image 3 Shown, the preparation method of this high-density, high physical suede microfiber artificial leather comprises the following steps:

[0024] (1) Ferris wheel-shaped sea-island composite fibers are made into ferris wheel-shaped superfine fiber non-woven fabrics;

[0025] (2) Immerse the ferris wheel-type ultrafine fiber non-woven fabric obtained in step (1) in DMF solution of polyurethane;

[0026] (3) Soak the semi-finished product obtained in step (2) in an aqueous solution of coagulation liquid DMF, perform coagulation and foaming treatment, and make polyurethane into an elastomer containing microcells;

[0027] (4) washing;

[0028] (5) Use an organic solvent to dissolve the LDPE part in the Ferris wheel-shaped sea-island composite fiber;

[0029] (6) Dry and set the shape to prepare the superfine fiber artificial leather base cloth.

[0030] (7) Sanding and dyeing to produce high-density, high-property suede microfiber artificial leather

[00...

Embodiment 1

[0043] High physical suede microfiber artificial leather for casual shoes

[0044] 1. Preparation of PA6 / (PA6+LDPE) ferris wheel type sea-island staple fiber:

[0045] (a) Raw material for spinning:

[0046] Dingdao component: PA6 chips, grade M32600, relative viscosity 2.6η; produced by Guangzhou Xinhui Meilunda Co., Ltd.

[0047] Blends of LDPE+PA6: LDPE, brand 1160A, melt index 60MFI, produced by Beijing Yanshan Petrochemical Branch; PA6 nylon chips, brand M32800, relative viscosity 2.8η, produced by Guangzhou Xinhui Meilunda Co., Ltd.

[0048] (b) Raw material ratio: weight ratio: PA6 / (PA6+LDPE)=30 / (35+35);

[0049] (c) Spinneret specifications: number of holes x ∩ shape x aperture is 1200x16x0.35mm;

[0050] (d) Screw extruder: specification 125, length-to-diameter ratio L / D=30:1;

[0051] (e) Metering pump specifications: wheel type component 10cc / rev, indeterminate island core layer component 20cc / rev;

[0052] (f) Cooling air temperature: 16°C, wind speed: 2.5m / s;...

Embodiment 2

[0074] Suede Microfiber Artificial Leather for Sofa Covered with Ferris Wheel Type Sea Island Filament Woven Mesh

[0075] 1: Spinning of PA6 / (PA6+LDPE) ferris wheel type sea-island filament:

[0076] (a) Raw material for spinning:

[0077] Dingdao component: PA6 chips, grade M32600, relative viscosity 2.6η; produced by Guangzhou Xinhui Meilunda Co., Ltd. Blends of LDPE+PA6: LDPE, brand 1I60A, melt index 60MFI, produced by Beijing Yanshan Petrochemical Branch; PA6, brand name M32800, relative viscosity 2.8η, produced by Guangzhou Xinhui Meilunda Co., Ltd.

[0078] (b) Raw material ratio: weight ratio: PA6 / (PA6+LDPE)=35 / (32+33);

[0079] (c) Spinneret specifications: number of holes × ∩ shape number × aperture is 36 × 12 × 0.30mm;

[0080] (d) Screw extruder: Dingdao components Adventitious island component

[0081] (e) Metering pump specifications: wheel type fixed island component 0.6cc / rev, variable island core layer component 1.2cc / rev;

[0082] (f) Cooling air tem...

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Abstract

The invention discloses a preparation method of high-density and high-physical-property suede superfine fiber artificial leathers, which comprises the following steps: 1, preparing a ferris wheel type superfine fiber non-woven fabric from ferris wheel type sea island composite fibers; 2, soaking the non-woven fabric in a polyurethane DMF (dimethyl formamide) solution; 3, carrying out solidification and foaming processing on the non-woven fabric so as to prepare an elastomer with micro-foamed holes; 4; carrying out water washing on the elastomer; 5, removing a LDPE (low-density polyethylene) part through dissolving by using an organic solvent; 6, drying and formalizing the obtained product so as to obtain a high-density and high-physical-property suede superfine fiber artificial leather based fabric; and 7, carrying out peached finish and dyeing processing on the fabric. The ferris wheel type superfine fiber non-woven fabric can be a non-woven fabric prepared through short fiber needling, and also can be a superfine fiber non-woven fabric covered with ferris wheel type sea island filament woven mesh cloth. Because the proportion of the island phase of the ferris wheel type sea island composite fiber is as high as 70%, PE phases required to be extracted are correspondingly reduced. Naps of a fixed island fiber part are uniform in length and distribution, and can be prepared into high-strength and high-physical-property high-grade suede superfine fiber artificial leathers.

Description

technical field [0001] The invention belongs to the artificial leather manufacturing technology, and relates to a method for manufacturing suede superfine fiber artificial leather, a method for preparing suede superfine fiber artificial leather with high density and high physical properties. Background technique [0002] The suede microfiber artificial leather is made by impregnating the sea-island fiber non-woven fabric in DMF (dimethylformamide) solution of polyurethane, and then soaking in the aqueous solution of coagulation liquid DMF for coagulation and foaming treatment, and then using organic The solvent dissolves the "sea" part of the sea-island fiber to make a superfine fiber artificial leather base cloth, and then sands and raises the surface of the base cloth to make it. Currently, there are two production methods of sea-island fibers used in the synthetic leather industry, namely fixed island method and indefinite island method. [0003] Island-in-the-sea fiber ...

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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IPC IPC(8): D06N3/12B32B27/04B32B37/02B32B38/00B32B38/14
Inventor 许志顾海云
Owner JIAXING UNIV
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