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:
Oct. 02, 2007
Filed:
Jun. 28, 2005
Warren C. Tyler, Tubac, AZ (US);
Steven G. Taylor, Columbus, OH (US);
Melvin L. Druin, Freehold, NY (US);
Arthur W. Robichaud, Kittery, ME (US);
Warren C. Tyler, Tubac, AZ (US);
Steven G. Taylor, Columbus, OH (US);
Melvin L. Druin, Freehold, NY (US);
Arthur W. Robichaud, Kittery, ME (US);
SIG Combibloc, Inc., Chester, PA (US);
Abstract
A laminate structure includes an internal layer of foamed polymer. The foamed polymer replaces a paperboard layer used in prior laminate structures. Built upon the foamed polymer are three layers of low density polyethylene (LDPE), a layer of aluminum foil, and a tie layer. The foamed polymer may be polyethylene terephthalate (PET), polypropylene, high density polyethylene HDPE, LDPE, polystyrene, compositions comprising any of these polymers, or any other suitable foamed polymer compositions. The first LDPE layer coats a first surface of the foamed polymer, and the second LDPE layer coats a second surface of the foamed polymer. The aluminum foil layer is applied atop the second LDPE layer. The exposed surface of the aluminum foil is then coated with the tie layer, which is then topped with a third layer of LDPE. A non-polar homogeneous heat seal may be created at a temperature ranging from 250° F. to 500° F.