Patent · US Active

PVC-free seals for twist crowns

US10450449B2 · kind B2 · utility

1Cited by

5References

20Claims

0Family size

Assignee

ACTEGA DS GMBH · DE

Inventors

Dany Mängel · Twistringen, DE
Waldemar Eichler · Bremen, DE

Key dates

Filing date	Nov 20, 2009
Grant date	Oct 22, 2019
Priority date	—
Expiry date	Sep 26, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L23/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a polymer compound for a PVC-free sealing insert for twist crowns, wherein the Shore A hardness of the polymer compound is between 50 and 90 and in the compressive deformation test analogous to ASTM D395-97 Method B at 70 DEG. C. the polymer compound exhibits a compression set of 30-90%.

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