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:
Apr. 01, 2014
Filed:
May. 20, 2009
Jau-ming Su, Kent, WA (US);
Paul Z. Wolak, Indianapolis, IN (US);
Jau-Ming Su, Kent, WA (US);
Paul Z. Wolak, Indianapolis, IN (US);
Pliant, LLC, Evansville, IN (US);
Abstract
A hermetically sealed package, for example a freezable, microwavable package containing a food product, having a sealing film that includes a vent system that is scored by a laser into the package. The vent system includes at least one linear or non-linear vent pattern scored into a portion of the outer surface of the sealing film so as to form at least one weakened wall pattern. According to certain embodiments, the vent pattern may be scored by a laser to a depth that does not perforate the sealing film. The inner surface of the sealing film that is adjacent to the weakened wall pattern is directly exposed to pressure that is generated in the inner region of the package during heating. According to some embodiments, the vent pattern may have a vent pattern span that is approximately 1% to 50% of the size of the inner region span.