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Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same

A technology of superfine fiber and process method, which is applied in fiber processing, conjugated synthetic polymer artificial filament, filament/thread forming, etc., which can solve the problems of high production cost, low product quality, and large investment in equipment. Achieve the effects of economical manufacturing cost and environmental protection requirements, superior wearing performance, and good production controllability

Active Publication Date: 2011-05-25
烟台万华超纤股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low content of island components, uneven thickness of island components, difficulty in fiber opening, poor dyeability of ultrafine fibers after fiber opening, and poor mechanical properties in existing non-island-fixed sea-island ultrafine short fibers for synthetic leather. A series of problems such as poor performance, and at the same time avoid the problems of large equipment investment, high production cost, and low product quality in the production of ultrafine fiber synthetic leather based on the alkali weight reduction process. The produced fixed-island superfine fiber and its preparation method also provides a process for preparing synthetic leather by using the fixed-island superfine fiber

Method used

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  • Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same
  • Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same
  • Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 (fixed island superfine short fiber)

[0030] Use PA6 (polyamide) as the island component, after drying to ensure that the water content of the slices is controlled at 100PPM, PE (polyethylene) as the sea component, put them into their respective storage tanks, and enter their respective screw extrusion through the feeding system The machine is heated, melted, filtered, and then transported to the spinning box through the melt pipeline. The temperature control of the island components in each area is as follows:

[0031]

[0032] The spinning melt entering the spinning box is metered into the composite spinning assembly through its own metering pump, in which the sea-island component ratio is controlled as PA6:PE=60:40, and the number of islands is 37 islands, which are extruded through the spinneret to form The composite monofilament is cooled by side blowing, oiled, crimped and stored in a silk drum through a sunflower roller. The winding speed of the p...

Embodiment 2

[0038] Embodiment 2 (fixed island superfine short fiber)

[0039] Use PET (polyester) as the island component, after drying to ensure that the water content of the slices is controlled at 30PPM, PE (polyethylene) as the sea component, put them into their respective storage tanks, and enter their respective screw extrusion through the feeding system The machine is heated, melted, filtered, and then transported to the spinning box through the melt pipeline. The temperature control of the island components in each area is as follows:

[0040]

[0041] The spinning melt entering the spinning box is metered into the composite spinning assembly through its own metering pump, in which the proportion of sea island components is controlled as PET:PE=50:50, and the number of islands is 37 islands, which are extruded through the spinneret to form The composite monofilament is cooled by side blowing, oiled, crimped and stored in a silk drum through a sunflower roller. The winding spee...

Embodiment 3

[0043] Embodiment 3 (fixed island superfine short fiber):

[0044] PA6 (polyamide) is used as the island component, and after drying to ensure that the water content of the slice is controlled at 80PPM, PS (polystyrene) is used as the sea component, which are respectively put into their respective storage tanks, and enter their respective screw extruders through the feeding system. The machine is heated and melted, filtered, and then transported to the spinning box through the melt pipeline. The temperature control of the island components in each area is as follows:

[0045]

[0046] The spinning melt entering the spinning box is metered into the composite spinning assembly through its own metering pump, in which the proportion of sea island components is controlled as PA6:PS=80:20, and the number of islands is 37 islands, which are extruded through the spinneret to form The composite monofilament is cooled by side blowing, oiled, crimped and stored in a silk drum through...

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Abstract

The invention relates to a figured sea-island super-fine fiber, and a preparation method and a synthetic leather preparing process method using the same, which belong to the technical field of leather and leather manufacture methods. The figured sea-island super-fine fiber is characterized in that the weight percentage ratio of island components of the fiber to sea components of the fiber is 50 percent to 80 percent / 50 percent to 20 percent, wherein the island components are polyamide (PA) 6 or polyethylene terephthalate (PET), and the sea components are polyolefins or phospholamban (PLB) or polyvinyl alcohol (PVOH). The preparation method comprises the steps of slice drying and melting, composite spinning, oiling and falling into a barrel, drafting curling and drying cutting. The synthetic leather preparing method comprises the following steps that: 1. the components are sequentially prepared into a single-layer fiber net, a composite layer fiber net, needle-punched non-woven cloth and needle-punched non-weaving cloth; 2.soakage and coagulation are sequentially carried out on the non-weaving cloth, the non-weaving cloth is washed, so that a synthetic leather impregnated substrate is formed, repeated soaking squeezing, azeotropic distillation and drying are sequentially carried out, so the synthetic leather is obtained. The synthetic leather produced by the invention has the advantages of excellent mechanical performance, excellent dyeing performance, excellent dyefastness, better production controllability, economy and environment protection. Compared with natural leather and products of the natural leather, the synthetic leather has the advantages that use performance such as durability, weatherability, antibacterium mothproofing, dyefastness and the like of products is much superior to that of the natural leather and the products of the natural leather.

Description

technical field [0001] The invention relates to a fixed-island superfine fiber suitable for toluene extraction type superfine fiber synthetic leather, a preparation method thereof and a process for preparing synthetic leather using the same, belonging to the technical field of synthetic leather and its manufacturing method. Background technique [0002] Synthetic leather microfibers are divided into fixed island type and indeterminate island type. Indeterminate island microfibers usually use PA6 (polyamide) as the island component, polyethylene as the sea component, and use a single-screw two-component mixed melt composite spinning method to take advantage of the incompatibility of the two polymer melts Sea-island distribution is formed in the fiber cross-section, and the sea-island bicomponent composite fiber obtained becomes superfine fiber after chemical dissolution and extraction in the subsequent channel. Since the incompatible two-component chips are blended and compo...

Claims

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Application Information

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IPC IPC(8): D01F8/12D01F8/14D01F8/06D01F8/10D01D5/28D01D5/088D01D5/096D01D7/00D01D10/02D04H1/46D06C7/00D06C11/00D06N3/14D04H1/498
Inventor 曾跃民于洪涛吴发庆王荣于复海徐德胜李革杨典军赵春湖曹培利
Owner 烟台万华超纤股份有限公司
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