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:
Jul. 11, 2000
Filed:
Jan. 22, 1997
Applicant:
Inventors:
Franck Vandekerckhove, Meulebeke, BE;
Alain Bouilloux, Bernay, FR;
Regis Jacquemet, Evreux, FR;
Bruno Echalier, Paris, FR;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; C08L / ;
U.S. Cl.
CPC ...
4284761 ; 4284769 ; 525 66 ; 525179 ;
Abstract
The invention provides a film having low permeability to hydrocarbons comprising at least one layer (i) formed of a polyamide/polyolefin alloy having a polyamide matrix and at least one layer (ii) formed of a polyolefin. The invention also provides a release film for a sheet molding compound consisting of said film, as well as a packaging for expandable polystyrene formed of said film.