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:
Jun. 26, 1990
Filed:
Mar. 16, 1988
Applicant:
Inventor:
Herbert Engelsberger, Viersen, DE;
Assignee:
Helio Folien GmbH, Viersen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B27N / ;
U.S. Cl.
CPC ...
428 353 ; 428 354 ; 428132 ; 428220 ; 428458 ; 428461 ; 428463 ; 4284769 ; 428516 ; 428518 ; 428910 ; 428349 ; 156253 ; 156510 ; 426127 ;
Abstract
Disclosed is a multiple-layer film having a support film, a first double film laminated thereto, which is formed from a single-ply blown tube collapsed by atmospheric pressure. The support film and the double film laminated thereto are perforated with pinholes. On the side opposite the support film the double film is laminated to a barrier film and the latter is laminated to a weldable layer of film.