The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2022
Filed:
Dec. 22, 2020
Toray Industries, Inc., Tokyo, JP;
Tetsuya Motohashi, Nagoya, JP;
Takafumi Hashimoto, Nagoya, JP;
Katsuhiro Miyoshi, Nagoya, JP;
Yoshihiro Kawahara, Otsu, JP;
Tamotsu Suzuki, Otsu, JP;
Chiasa Sato, Nagoya, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A method of producing a partially separated fiber bundle wherein, while a fiber bundle includes a plurality of single fibers travels along a lengthwise direction of the fiber bundle, a separator provided with a plurality of projected parts is penetrated into the fiber bundle to create a separation-processed part, and entangled parts, where the single fibers are interlaced, are formed at contact parts with the projected parts in at least one separation-processed part, thereafter the separator is removed from the fiber bundle, and after passing through an entanglement accumulation part including the entangled parts, the separator is penetrated again into the fiber bundle, characterized in that a separation processing time tduring being penetrated with the separator and a time tfrom being removed with the separator to being penetrated again into the fiber bundle satisfy Equation (1): 0.03≤t/(t+t)≤0.5.