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. 05, 1992
Filed:
Oct. 01, 1990
Applicant:
Inventors:
Charles R Barmore, Moore, SC (US);
Henry G Schirmer, Spartanburg, SC (US);
Assignee:
W. R. Grace & Co.-Conn., Duncan, SC (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428349 ; 428137 ; 428409 ; 428483 ; 4284758 ; 428515 ; 428516 ; 428520 ; 426127 ; 15624418 ;
Abstract
A multilayer laminate comprises a machinable inner component perforated film, preferably of a propylene homopolymer or copolymer, a first outer component film bonded to one side of the inner component film, and a second outer component film bonded to the opposite side of the inner component film, each of the first and second outer component films providing high gas permeability and low moisture transmission and including a bonding layer of ethylene copolymers and an outer heat sealable layer.