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. 09, 2017
Filed:
Dec. 02, 2011
David R. Weisinger, Houston, TX (US);
David R. Weisinger, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
This invention relates to a film including (i) at least one sealing layer, including greater than 50.0 wt. %, based on the total weight of the sealing layer, of a modifier, the modifier including a copolymer of propylene derived units and one or more comonomers selected from the group consisting of Cand Cto Calpha-olefin derived units, wherein the comonomer content is in the range of about 2.0 to 25.0 wt. %; and (ii) at least one core layer, including a polymer having a propylene derived unit content of greater than 90 wt. %, based on the weight of the polymer; and wherein the film has a seal initiation temperature of 105° C. or less; and wherein when a seal is formed, the sealed film has a hermeticity of 65% or more. The invention also relates to methods to produce such films, articles including such films, and the use of such films to form heat sealed articles.