Patent · US Active

Multilayer films for reclosable packaging

US8617677B2 · kind B2 · utility

15Cited by

12References

11Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Yves Trouilhet · Le Pont-de-Claix, FR
Jacques Roulin · Vésenaz, CH

Key dates

Filing date	Jul 20, 2012
Grant date	Dec 31, 2013
Priority date	—
Expiry date	Jul 20, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/60
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Disclosed is a multilayer structure that comprises a heat sealable layer comprising amorphous polyethylene terephthalate with a melting point greater than 200° C., a pressure sensitive adhesive and at least one tie layer encapsulating the pressure sensitive adhesive. The structure can be coextruded without degrading the pressure sensitive adhesive. Also disclosed is a reclosable package comprising the structure and methods to make such structures.

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