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:
Sep. 01, 1981
Filed:
Aug. 04, 1978
Applicant:
Inventors:
Klaus-Dieter Hammer, Mainz, DE;
Martin Schroder, Wiesbaden, DE;
Horst Pietruck, Schwabenheim, DE;
Max Bytzek, Naurod, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
F16L / ; A23L / ; B05D / ;
U.S. Cl.
CPC ...
426105 ; 1381181 ; 426135 ; 427230 ; 427284 ; 427290 ; 428 36 ; 428219 ;
Abstract
Disclosed is a multiple layered film preferably in the form of a tube and being suitable for forming sausage casings, comprising: a central layer of a cellulose hydrate-based material; a first layer on the inside of the central layer, comprising a film of thermoplastic synthetic resinous material and being impermeable to water and water vapor; and a second layer on the outside of the central layer, comprising a synthetic elastic copolymer and being permeable to water and water vapor. Also disclosed is a method for preparing these film products.