San Fang Chemical Industry Company, Ltd.

Ching-Tang Wang

Mong-Ching Lin

Kuo-Kuang Cheng

Chin-Yi Lin

Chih-Chen Lin

Chung-Chin Feng

Yung-Hsiang Chou

A method for producing an artificial leather includes mixed spinning an island polymer and a sea polymer having a different dissolving property from that of the island polymer at a predetermined temperature, producing a non-woven substrate from the fiber obtained, immersing the non-woven substrate into a polymer, dissolving and removing the sea polymer in the non-woven substrate to obtain an artificial leather as a semi-finished product, and polishing the surface of the artificial leather to obtain an artificial leather having excellent dyeability and advanced fluff-like property. The ratio of melt flow index of the sea polymer to relative viscosity of the island polymer is about 20 to about 55, in which the relative viscosity of the island polymer is about 2.7 to about 3.5 and the weight percentage of the sea polymer relative to the sum of the sea polymer and the island polymer is about 30% to about 70%.

Method for producing ultrafine fiber and artificial leather

A microfiber substrate of improved carding ability and its manufacturing method, and more particularly a micro-fiber spun by conjugated melting of crystallization difference of high crystallization polymer and low crystallization polyester, drawn to form an unsplit microfiber staple having a layer of thin film in its surrounding, the microfiber staple which is still kept in unsplitting state during opening, carding and lapping treatment, will be split just at the layer of thin layer of its surrounding of the microfiber staple by spunlace to completely split from the microfiber, knitted to form water-jet punch web, then subject to hot water to shrink to densification. The microfiber nonwoven web excellent in the wiping effect, cleaning effect and microfiber artificial leather excellent in the hand feeling and fluff compaction without environment pollution is enabled to offer the artificial leather more cheaply and easily finished.

Process of making splittable microfiber substrate

The present invention relates to a method for preparing retro-reflective sheet with high abrasion resistance produced by initially coating the first coating layer one component type polyurethane (hereinafter refer to PU) resin mixed with reflective particles on the pattern releasing paper with embossed grain, and after drying, further coating the second layer two component type PU resin adhesive agent containing colorant, then drying; above this, coating a kind of paste; finally, adhering substrate; after pre-drying and curing, divesting releasing paper, using solvent to solve the part of PU resin leaving reflective particles exposed and hardened. The material produced characterized in high abrasion resistance and using soft material as substrate. Use of the retro-reflective material produced by the invention is valuable for commercial fields like coat, vest, shoes, cap, poster, and the like.

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Taipei, Taiwan

Ching-Tang Wang