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Raising method of artificial leather

A technology of artificial leather and fleece, applied in textile and papermaking, fiber processing, roughening and other directions, can solve the problem of inability to use two-component microfiber

Inactive Publication Date: 2010-08-11
厦门象屿兴泓超细材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the raising method in the prior art can only be applicable to the PU synthetic leather of one-component superfine fiber, and contains polyester superfine fiber, polyamide superfine fiber in the PU synthetic leather containing two-component superfine fiber, Because there are differences in the mechanical properties of the two kinds of superfine fibers, the process conditions for raising the pile are also different, so the raising method of the prior art cannot be applied to the PU synthetic leather containing two-component superfine fibers.

Method used

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  • Raising method of artificial leather
  • Raising method of artificial leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] 1. Preparation of composite fibers:

[0064] Take 25 parts of polyethylene terephthalate chips and put them into polyester spinning screw extruder, take 75 parts of polycaprolactam chips into polyamide spinning screw extruder, melt and knead them at 280℃ , the mixed product is subjected to such as figure 1 The 8-split spinneret shown is extruded, and the following examples all use this spinneret extrusion molding to obtain 8-split as-spun fibers, and the as-spun fibers are filled between the fiber skeleton and the fiber skeleton. The lobes between the fibers are composed of polyethylene terephthalate and the lobes are polycaprolactam;

[0065] The as-spun fibers were drawn sequentially by 1.8 times and 1.7 times, oiled with 4wt% silicone oil, and heat-set at 70°C to obtain multifilaments with a fineness of 2.22dtex, and then cut into 51mm composite fibers. The composite fiber samples were tested and the results are listed in Table 1.

[0066] 2. Preparation of non-wo...

Embodiment 2

[0080] 1. Preparation of composite fibers:

[0081] Take 17 parts of polyethylene terephthalate chips and put them into a polyester spinning screw extruder, take 83 parts of polycaprolactam chips and put them into a polyamide spinning screw extruder, melt and knead them all at 275°C, The kneading product is extruded through a spinneret to obtain 8 lobes of nascent fibers, the nascent fibers are composed of a fiber skeleton part and a split part filled between the fiber skeletons, wherein the fiber skeleton part is composed of poly pairs Ethylene phthalate, split part is polycaprolactam;

[0082] The as-spun fibers were drawn sequentially by 1.6 times and 1.5 times, oiled with 4wt% silicone oil, and heat-set at 70°C to obtain multifilaments with a fineness of 2.42dtex, and then cut into 51mm composite fibers. The composite fiber samples were tested and the results are listed in Table 1.

[0083] 2. Preparation of non-woven fabric:

[0084] Unpack the composite fiber prepared...

Embodiment 3

[0093] 1. Preparation of composite fibers:

[0094] In this example, 16.5 parts of polyhexamethylene adipamide chips and 83.5 parts of polybutylene terephthalate chips are taken as spinning raw materials, and the rest of the preparation process is the same as in Example 1. The composition is polyhexamethylene adipamide, the split part is polybutylene terephthalate, the fineness is 2.23dtex, and the length is 50mm.

[0095] 2. Preparation of non-woven fabric:

[0096] Unpack the composite fiber prepared in step 1, comb and needle punch to make a density of 0.26g / cm 3 , Gram weight is 573g / cm 2 of non-woven fabrics.

[0097] 3. Non-woven impregnation:

[0098] The impregnation process of the nonwoven fabric is the same as in Example 1 in this example, and the PU synthetic leather is obtained after the impregnation.

[0099] 4. Fiber opening treatment:

[0100] In this example, the fiber-opening treatment process is the same as in Example 1, and the superfine fiber PU is sy...

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Abstract

The invention provides a raising method of artificial leather, comprising: providing superfine fibre polyurethane leather composed of superfine fibre non-woven fabric and polyurethane impregnated in the superfine fibre non-woven fabric, wherein superfine fibre non-woven fabric contains bi-component superfine fibre of which double components are respectively polyester superfine fibre and polyamide superfine fibre; the single surface or double surfaces of the superfine fibre polyurethane synthetic leather are carried out peached finish; the polyester superfine fibre and the polyamide superfine fibre on the surface are curled up to form polyester fluff and polyamide fluff so as to prepare two types of superfine fibre PU synthetic leather of which the average fluff length is 10-200 mu m. The raising method of the invention realizes the evenly raise of two types of superfine fibre, and the combination property of two types of superfine fibre is simultaneously kept, so that finally prepared raising superfine fibre PU synthetic leather has terylene stiffness, nylon flexibility and fine hand feel at the same time.

Description

technical field [0001] The invention relates to the field of leather processing, in particular to a raising method for artificial leather. Background technique [0002] Artificial leather is widely used because of its good wear resistance, heat resistance, cold resistance, high toughness and tensile strength. The artificial leather produced by impregnating non-woven fabrics with PU (polyurethane) resin is called PU synthetic leather. PU synthetic leather has the pattern and luster of natural leather. It is widely used for its rich colors, high strength, and not easy to damage. In the clothing industry, luggage industry, sports industry, automobile manufacturing and other industries. [0003] Microfiber PU synthetic leather is an artificial leather with a microfiber structure with a fineness of less than 0.33dtex. Due to the strong water absorption of superfine fibers, it has hygroscopicity comparable to natural leather. In addition, microfiber PU synthetic leather also sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06C11/00D01D5/32
Inventor 张飞跃李为富
Owner 厦门象屿兴泓超细材料有限公司
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