Hamre, Schumann, Mueller & Larson, P.C.
Polytetrafluoroethylene fiber and method for manufacturing 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.
Yeu Ming Tai Chemical Industrial Co., Ltd.
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Lei-Ti Shia-Chung Chin-Chun Wen-I Chin-Cha James
Huang Chen Chou Kuo Chou Huang