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:
Jul. 21, 2020
Filed:
Jul. 06, 2018
Applicant:
Chang Chun Petrochemical Co., Ltd., Taipei, TW;
Inventors:
Huan Ming Chang, Taipei, TW;
Weng Shing Lin, Taipei, TW;
Chih Chieh Liang, Taipei, TW;
Chia Hao Hsu, Taipei, TW;
Assignee:
CHANG CHUN PETROCHEMICAL CO., LTD., Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F 216/06 (2006.01); C08J 5/18 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B29B 9/06 (2006.01); B29K 23/00 (2006.01);
U.S. Cl.
CPC ...
C08F 216/06 (2013.01); B29B 9/06 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); C08J 5/18 (2013.01); B29K 2023/086 (2013.01); C08J 2329/04 (2013.01);
Abstract
Extruded films comprising ethylene vinyl alcohol copolymer (EVOH) with substantially no blow holes therein, are formed by using a pellet feed to the extruder wherein 90-100 wt. % of the pellets pass through an ASTM size 5 sieve and 0-10 wt. % of the pellets are finer than a number 10 mesh (ASTM Sieve size). Uniform feeding to and through the extruder with a lack of bridging of the EVOH pellet feed have been observed.