Patent · US Active

Directly adhering, transparent heat-sealable binder for the coating and sealing of transparent plastics foils

US10195829B2 · kind B2 · utility

0Cited by

3References

12Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

Andre Hennig · Ingelheim am Rhein, DE
Bruno Keller · Zürich, CH
Juergen Hartmann · Ludwigshafen, DE
Thomas Arnold · Winslow, US
Michael Waldhaus · Reinheim, DE
Monika Maerz · Alzenau, DE

Key dates

Filing date	May 17, 2017
Grant date	Feb 5, 2019
Priority date	—
Expiry date	May 17, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W90/10
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A transparent, heat-sealable coating for transparent PET packaging foils can be provided by using a heat-sealable lacquer based on styrene-containing copolymers, on poly(meth)acrylates, on at least one polyester and optionally on a tackifier, and also the process for the sealing of a foil coated with this lacquer. It is surprising here that, despite the use of a rubber based on styrene-containing polymers that is not optically compatible with polyesters and polymethacrylate, the transparency of the heat-sealable coatings is still very high.

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