Yeu Ming Tai Chemical Industrial Co., Ltd.

Precision Machinery Research Development Center

Yeu Ming Ti Chemical Industrial Co., Ltd.

Chin-Chun Chou

Wen-I Kuo

Lei-Ti Huang

James Huang

Chin-Cha Chou

Shia-Chung Chen

I-Shou Tsai

Pen-Yi Liao

The PTFE real twist yarn of the present invention is a PTFE real twist yarn obtained by twisting a polytetrafluoroethylene (PTFE) multi-filament slit yarn. The yarn has a circular cross-section with a circularity in the range of 10/8 to 10/10, where the circularity is expressed by the ratio between the major axis width and the minor axis width, the average fineness of filaments is in the range of 1.5 to 200 dtex, a fineness D is in the range of 50 to 6000 dtex, and a twist coefficient K expressed by Formula (1) is in the range of 10000 to 35000:twist coefficient=number of twists&#xd7;(the finenessof the PTFE real twist yarn)&#x2003;&#x2003;(1)

Polytetrafluoroethylene real twist yarn and method of producing the same

A polytetrafluoroethylene (PTFE) fiber includes a filament obtained by partially slitting an oriented PTFE film in a lengthwise direction of the film. Emboss processing is conducted linearly along the lengthwise direction of the film and like a zigzag shape or a convexo-concave shape in a width direction of the film, followed by slitting, whereby the filament includes a network structure in which single fibrils that are opened partially are arranged regularly. A PTFE short fiber is obtained by cutting the above filament and includes a branch structure. Thereby, a PTFE fiber with a small average fineness of single fibrils, a uniform fineness and a single-peak distribution with the peak at a center of fineness and with a high production yield and uniform and stable branch structure can be provided and a method for manufacturing the PTFE fiber can be provided.

Polytetrafluoroethylene fiber and method for manufacturing the same

A PTFE fiber with a low density and having a network structure that allows effective performances to be given to its finished articles and a method for manufacturing the PTFE fiber are provided. The PTFE fiber is a filament obtained by giving a heat treatment to a biaxially stretched polytetrafluoroethylene (PTFE) film, followed by slitting partially in a lengthwise direction of the film. The filament includes a network structured fiber in which single fibers are opened partially in the width direction, and the filament is an aggregate of the single fibers. This fiber is manufactured as the filament by feeding a biaxially stretched PTFE film to a revolving pin roll with needles implanted thereon, the needles being arranged so that a plurality of rows run obliquely along a circumferential direction at substantially regular intervals, and slitting the film partially in a lengthwise direction. This PTFE filament may be cut into short fibers with a cutter. The short fibers include a branch structure.

A nanomaterial processing system is constructed to include a compressor adapted to compress a flow of air/liquid into a high-pressure flow of air/liquid, a material feeder adapted to feed a material into the high-pressure flow of air/liquid passing out of the compressor, enabling the fed material to be mixed with the high-pressure flow of air/liquid into a high-pressure material flow; a shunt collider adapted to shunt the high-pressure material flow into two sub-flows and to let the shunt sub-flows to collide into a collided material flow, and a high-speed cutting unit, which uses a diamond coating-coated cutting wheel to cut solid substances the collided material flow.

Growing community of inventors

Taichung, Taiwan

Chin-Chun Chou