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:
Sep. 08, 2020
Filed:
Sep. 11, 2015
Riken Technos Corporation, Tokyo, JP;
Tomohiro Takahashi, Tokyo, JP;
Hidemasa Sugimoto, Tokyo, JP;
RIKEN TECHNOS CORPORATION, , JP;
Abstract
Embodiments provide a method for producing a film including a thermoplastic resin composition, the method including: (1) a step of subjecting a thermoplastic resin composition to preliminary heating at 100-250° C.; (2) a step of subjecting a first roller and second roller of a calender roll film-forming apparatus to pre-heating; and (3) a step of introducing the thermoplastic resin composition, which has been subjected to preliminary heating in step (1), into the clearance between the first roller and second roller, which have been pre-heated in step (2), and continuously winding a molten film of the thermoplastic resin composition on the first roller. According to at least one embodiment, the rotational speed of the first roller is higher than the rotational speed of the second roller. According to at least one embodiment, the thermoplastic resin composition contains (A) 100 parts by mass of a thermoplastic resin, (B) 1-60 parts by mass of carbon nanotubes and (C) 1-100 parts by mass of at least one type of material selected from the group consisting of acetylene black and graphite.