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:
May. 09, 2023
Filed:
May. 18, 2020
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Junji Kanehagi, Tokyo, JP;
Tadao Samejima, Tokyo, JP;
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Abstract
A method for manufacturing a fiber-reinforced resin molding material having a cut fiber tow impregnated with a resin includes a separation step of intermittently separating a fiber tow and forming at least two separation-processed lines arranged side by side in a width direction of the fiber tow and a cutting step of cutting the fiber tow at an interval in the longitudinal direction, and the separation step and the cutting step are carried out to satisfy (1) to (3). (1) 1≤c/L≤50 (2) c<a (3) b/L<1 'c' is an overlapping length of separated parts when one separation-processed line is projected to another separation-processed line adjacent thereto in the width direction, 'L' is the interval in the cutting step, “a” is a length of the separated part in the separation-processed line, and “b” is a length of an unseparated part in the separation-processed line.