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. 22, 2016
Filed:
Nov. 25, 2008
Tomohiro Maekawa, Niihama, JP;
Koji Koyama, Niihama, JP;
Tomohiro Maekawa, Niihama, JP;
Koji Koyama, Niihama, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
ESCARBO SHEET CO., LTD., Mitsuke-Shi, Niigata, JP;
Abstract
An object of the present invention is to provide an extruded resin film which thermally shrinks little and a method for producing the same. The present invention provides an extruded resin film, formed by an extrusion forming method, made of a thermoplastic resin, having a thickness of from 0.03 to 0.5 mm, wherein the extruded resin film has a shrinkage ratio in the extrusion direction, S1 (%), which satisfies the following formula (1) and has a shrinkage ratio in the cross-extrusion direction, S2 (%), of from 0 to 5% when being left at rest for 0.5 hours under a hot atmosphere at the temperature of 20° C. above heat distortion temperature (Th) of the thermoplastic resin:0.1/1≦1.7/  (1)wherein X is thickness of the extruded resin film (mm).