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. 30, 2019
Filed:
Nov. 12, 2015
Dsm Ip Assets B. V., Heerlen, NL;
DSM IP ASSETS B.V., Heerlen, NL;
Abstract
Processes are disclosed for preparing biaxially oriented film by forming a polymer melt of a composition which includes at least 50 wt % with respect to the total amount of the composition of a copolyamide having at least 75 wt. % monomeric units derived from either (i) caprolactam or (ii) hexamethylene diamine and adipic acid, each of which further includes units derived from diamines X and/or diacids Y and/or aminoacids Z in a summed amount of between 0.2 to 25 wt %, followed sequentially by casting and quenching a film of the polymer melt, MD-stretching of the film, TD-stretching the film, cooling the film after TD-stretching, and heat setting the biaxially oriented film. The resulting biaxially oriented film exhibits attributes suitable for use as food packaging.