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. 12, 2026
Filed:
Oct. 14, 2022
The Japan Steel Works, Ltd., Tokyo, JP;
THE JAPAN STEEL WORKS, LTD., Tokyo, JP;
Abstract
A screw for direct molding that transports, toward a downstream side, thermoplastic resin supplied from the upstream side, while melting the thermoplastic resin, and that kneads the molten resin which has been transported thereto, together with an additive material introduced at an intermediate point, includes a screw main body and a kneading piece main body. The screw main body includes a first stage and a second stage. A main flight in a spiral form is provided on an outer circumferential surface of the first stage. A plurality of flights in a spiral form are provided on an outer circumferential surface of the second stage. A plurality of flights in a spiral form are provided on an outer circumferential surface of the kneading piece main body. At least one cutout part is formed at an intermediate point of the flights provided on the kneading piece.