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:
Aug. 30, 1994
Filed:
May. 21, 1993
Dennis L Carespodi, Winston-Salem, NC (US);
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Abstract
An all polymeric, die cuttable symmetrical lidding laminate for a container which is heat sealable to and peelable from the container. In one embodiment, the laminate structure comprises a core layer of a biaxially oriented voided polypropylene film to the opposite sides of which first and second outer layers of a nonvoid-bearing biaxially oriented polyester film are adhesively laminated to form a symmetrical or balanced laminate structure. A heat seal layer or coating is applied to one side of the laminate structure. A static charge dissipating layer or coating is applied to the other side of the laminate structure. The laminate has sufficient stiffness to be readily die cuttable, has excellent lay flat characteristics, remains substantially curl-free when exposed to heat from either side and is readily denested from a stack of lids during package processing.