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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.:

US 5540989 B1

PDFFull Text
Date of Patent:
Jul. 30, 1996

Filed:

Feb. 14, 1995

Multilayered heat-sealable plastic films

Applicant:
Inventors:

Jurgen Maul, Marl, DE;

Werner Siol, Darmstadt-Eberstadt, DE;

Ulrich Terbrack, Reinheim, DE;

Assignee:

Roehm GmbH Chemische Fabrik, Darmstadt, DE;

Attorney:

Oblon, Spivak, McClelland, Maier & Neustadt, P.C.

Primary Examiner:

Paul J Thibodeau

Assistant Examiner:

Vivian Chen

Int. Cl.
CPC ...
B32B / ; B32B / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
428349 ; 428519 ; 428520 ; 428521 ; 428522 ; 428 368 ; 525 71 ; 525 80 ; 525 87 ; 525 89 ; 525 94 ; 525227 ; 5263285 ; 5263295 ; 5263297 ; 53477 ; 53485 ;
Abstract

The invention relates to a recycable, heat-sealable plastic film for hermetically sealing plastic containers, comprising at least two layers which mutually adhere, (i) a support layer comprised of an impact resistant polystyrene resin and (ii) a sealing layer consisting essentially of: a) 20-100 weight % of a copolymer P consisting essentially of: (p1) 20-90 weight % methyl methacrylate and/or ethyl methacrylate; (p2) 10-80 weight % of at least one monomer of formula I ##STR1## where R.sub.1 represents an C.sub.3-24 alkyl group; and (p3) 0-10 weight %, preferably 1-8 weight %, of a monomer which is copolymerizable with and different from the monomers (p1) and (p2); and

Find Patent Forward Citations

Maul, Jurgen. (1996). Multilayered heat-sealable plastic films (U.S. Patent No. 5540989). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5540989

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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