Patent · US Active

Heat-sealing compound for sealing aluminium foil and polyethylene terephthalate film to polypropylene, polyvinyl chloride and polystyrene containers

US8025758B2 · kind B2 · utility

7Cited by

8References

15Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

Gerd Loehden · Essen, DE
Sven Balk · Frankfurt, DE
Manfred Braum · Mainz, DE
Juergen Hartmann · Ludwigshafen, DE
Marita Kaufmann · Weiterstadt, DE
Michael Wicke · Seeheim-Jugenheim, DE

Key dates

Filing date	Jun 6, 2006
Grant date	Sep 27, 2011
Priority date	—
Expiry date	Dec 19, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L67/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a heat-sealing system consisting of an olefin polymer or olefin copolymer A, a methacrylate copolymer B, a graft polymer AB that is composed of the aforementioned components, a polyester C and an optional polymer D or an optional polymer blend DA, in addition to a solvent or solvent mixture L. The heat-sealing system is characterised by a high heat resistance, excellent barrier properties and short sealing times in relation to various plastics and aluminium foil or PET film.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.