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Preparation method of thin ultrafine composite fiber artificial leather base cloth

A technology of ultra-fine fiber and artificial leather, applied in textiles and papermaking, etc., can solve the problems of too thin skeleton, difficult peeling, unevenness, etc.

Inactive Publication Date: 2014-11-05
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When N is greater than 12, finer fibers will be obtained, but the skeleton will be too thin and uneven, and it will be difficult to peel off

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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  • Preparation method of thin ultrafine composite fiber artificial leather base cloth
  • Preparation method of thin ultrafine composite fiber artificial leather base cloth
  • Preparation method of thin ultrafine composite fiber artificial leather base cloth

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] Such as image 3 Shown, the preparation method of this thin composite superfine fiber artificial leather base cloth may further comprise the steps:

[0020] (1) After combing and laying the web of Adventitia sea-island short fiber, it is laminated with Adventitia orange petal-shaped composite filament woven mesh. Cloth compounding to form a composite needle-punched non-woven fabric covered with a woven mesh cloth, and impregnate the composite needle-punched non-woven fabric in a DMF solution of polyurethane;

[0021] (2) Soak the semi-finished product obtained in step (1) in an aqueous solution of coagulation liquid DMF, carry out coagulation and foaming treatment, and polyurethane is made into an elastomer containing microcellular cells;

[0022] (3) washing with water;

[0023] (4) Use toluene to dissolve the LDPE part of the adventitious island-in-the-sea short fiber and the adventitious island orange segment composite filament in the composite needle-punched nonwo...

Embodiment 1

[0037] Preparation of Garment Leather Base Fabric

[0038] 1: Spinning process of PA6 / (PA6+LDPE) indeterminate island orange segment composite filament

[0039] (a) Raw material for spinning:

[0040] Piece-shaped component: PA6 chips, grade M32800, relative viscosity is 2.8η;;

[0041] Blend of LDPE+PA6: a blend of LDPE with a melt index of 50MFI and PA6 with a viscosity of 2.8η, wherein:

[0042] LDPE, grade MB9500, melt index is 50.

[0043] Nylon chips, grade M32800, relative viscosity is 2.8η;

[0044] (b) Raw material ratio: weight ratio: PA6 / (LDPE+PA6)=50 / (25+25)

[0045] (c) Spinneret specifications: number of holes × number of orange segments × aperture is 48 × (8+1) × 0.30mm;

[0046] (d) Screw extruder: specifications

[0047] (e) Metering pump specification: 0.6cc / rev;

[0048] (f) Cooling air temperature: 16°C, wind speed: 0.6m / s;

[0049] (g) Rotational speed of the oil pan: 26rpm / min, oil concentration: 3.0%;

[0050] (h) Spinning (winding) speed: 450...

Embodiment 2

[0070] Preparation of leather base cloth for automobiles

[0071] 1: Spinning process of PET / (PA6+LDPE) indeterminate island orange segment composite filament

[0072] (a) Raw material for spinning:

[0073] Piece-shaped component: PET chip, viscosity 0.64dl·g -1 ;

[0074] Blend of LDPE+PA6: a blend of LDPE with a melt index of 50MFI and PA6 with a viscosity of 2.8η, wherein:

[0075] LDPE, grade MB9500, melt index is 50, produced by Korean LG company.

[0076] Nylon chips, grade M32800, relative viscosity is 2.8η;

[0077] (b) Raw material ratio: weight ratio: PET / (LDPE+PA6)=60 / (20+20);

[0078] (c) Spinneret specifications: number of holes × number of orange segments × aperture is 48 × (8+1) × 0.30mm;

[0079] (d) Screw extruder: specifications

[0080] (e) Metering pump specification: 0.6cc / rev;

[0081] (f) Cooling air temperature: 18°C, wind speed: 0.6m / s;

[0082] (g) Rotational speed of the oil pan: 26rpm / min, oil concentration: 3.0%;

[0083] (h) Spinning ...

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Abstract

The invention discloses a preparation method of thin ultrafine composite fiber artificial leather base cloth. The method comprises the following steps that (1), unfigured sea-island staple fibers are carded, lapped, then superimposed with unfigured orange-section composite filament woven mesh cloth, and subjected to needle punching to form composite needle-punched non-woven fabric of which the surface is covered with the woven mesh cloth; the composite needle-punched non-woven fabric is impregnated in a DMF (dimethyl formamide) solution of polyurethane; (2), solidifying and foaming treatment are conducted in a solidified DMF aqueous solution; (3), water washing is conducted; (4), LDPE (low-density polyethylene) in the composite needle-punched non-woven fabric is dissolved out with methylbenzene; (5), drying and shape forming are conducted; and (6) splitting is conducted; two layers of ultrafine fiber artificial leather base cloth are obtained; one layer is the thin ultrafine composite fiber artificial leather base cloth containing the unfigured orange-section composite filament mesh cloth; and the other layer is the conventional ultrafine fiber artificial leather base cloth. The obtained thin ultrafine composite fiber artificial leather base cloth has very good tensile strength and tearing strength due to the fact that the base cloth contains continuous orange-section fibers.

Description

technical field [0001] The invention belongs to the artificial leather manufacturing technology, and relates to a method for manufacturing an artificial leather base cloth, and a preparation method for a thin composite superfine fiber artificial leather base cloth. Background technique [0002] The microfiber artificial leather base cloth is made by impregnating the sea-island short-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 It is produced by dissolving the "sea" part of the island-in-the-sea short fiber with inorganic or organic solvents. The island-in-the-sea staple fiber production methods used include fixed island method and indeterminate island method. Island-in-the-sea staple fibers produced by island-fixing method are melted by two kinds of polymers PA6 (nylon 6) and COPET (alkali-soluble polyester chip) respectivel...

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 Patents(China)
IPC IPC(8): D06N3/14D06N3/00D04H5/02
Inventor 许志顾海云
Owner JIAXING UNIV
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