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Island ultra-thin fiber needling PU basecloth nonsulphur sulfuration impregnation liquid and method for manufacturing the basecloth

A superfine fiber and non-sulfur technology, which is applied in the processing field of sea-island microfiber needle-punched PU base fabric, can solve the problems of unfavorable environmental protection, large investment in equipment, high production cost, etc., and achieve soft hand feeling, good moisture permeability, good The effect of environmental protection

Inactive Publication Date: 2004-01-14
杭州福华人造革基布有限公司
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AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the problem that the prior art uses organic solvents such as DMF, toluene, or methyl ethyl ketone in the production process, and there are residues in the later stage of the process, which is not conducive to environmental protection, and an environmentally friendly process and formula are required to replace it; at the same time, such processes still exist Due to the large equipment investment and high production cost, the present invention further solves the processing method of producing high-quality imitation leather with less input.

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

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Embodiment Construction

[0009] The technical solutions of the present invention will be further specifically described below through examples.

[0010] The embodiment of the present invention uses polyester / Jin Haidao superfine fiber as raw material, and it can also be polyester / polyester or polyester / acrylic, both of which are within the protection scope of the present invention.

[0011] Process and conditions

[0012] 1. Non-woven acupuncture process:

[0013] Polyester / Jin Haidao microfibers go through opening → cotton blending → carding → web laying → pre-needling → main needling → shaving needling → hot air shrinkage → calendering → coiling.

[0014] Its needling needle density ≥ 1200 needles / cm 2 , non-woven fabric density ≥ 0.22g / cm 3 .

[0015] 2. Vulcanization process:

[0016] Unwinding → non-sulfur vulcanization impregnation → infrared bridging → (washing) → pre-baking → tension-free relaxation baking → (flattening) → coiling → coarse grinding → coiling.

[0017] The speed of the pr...

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Abstract

A needle-punched nonwoven raw PU fabric is prepared from the islands-type superfine polyester / polyamide fibres through non-sulfur sulfurizing, thermosensitive setting to uniformly disperse the copolymer emulsion in the gaps of needle-punched non-woven fabric, decreasing alkali content to dissolving out polyester component, and softening finishing. Its advantages are high air and moisture permeability, soft handle, high strength and elasticity, and less environmental pollution.

Description

technical field [0001] The invention relates to a superfine fiber synthetic leather base cloth, in particular to a processing method for sea-island superfine fiber needle-punched PU base cloth. Background technique [0002] With the development of composite fiber technology, the technical research of artificial leather has entered the stage of high simulation, that is, the development and research of PU synthetic leather with bundled microfiber as the base material. In the prior art, the superfine fiber PU base cloth is mostly dissolved in a solvent to make the fiber superfine, such as Chinese patent 00107308.7 "A kind of superfine fiber synthetic leather-jungang leather and its processing method", because the PU impregnating liquid is used for impregnation treatment , the production process uses organic solvents such as DMF (dimethylformamide), toluene or butanone, and there are residues in the later stage of the process, so its disadvantage is that it is not conducive to e...

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): D06N3/08
Inventor 胡明礼李健
Owner 杭州福华人造革基布有限公司
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