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:
Feb. 23, 2021
Filed:
Jun. 25, 2015
U-mhi Platech Co., Ltd., Nagoya, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Munehiro Nobuta, Nagoya, JP;
Naoki Toda, Nagoya, JP;
Toshihiko Kariya, Nagoya, JP;
Takeshi Yamaguchi, Nagoya, JP;
Kiyoshi Kinoshita, Nagoya, JP;
UBE MACHINERY CORPORATION, LTD., Ube, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
Provided is an injection molding method for resin that contains reinforcing fiber, the method being capable of easily eliminating uneven distribution of added components. The injection molding method is provided with: a plasticizing step for supplying resin pellets P and added components to a cylinder equipped with a screw, which has a rotating axis as the center is capable of rotating normally and in reverse, and generating molten resin by rotating the screwin the normal direction; and an injecting step for injecting the molten resin M comprising the added components into a cavity. In the plasticizing step, a reverse rotation operation for reversing the rotation of the screwis performed or a screw-stopping operation of stopping the normal rotation of the screwis performed with a prescribed timing and for a prescribed period.