Patent · US Expired

Label made of polyolefin film

US6838042B1 · kind B1 · utility

10Cited by

5References

21Claims

0Family size

Assignee

Trespaphan GmbH · DE

Inventors

Gerhard Wieners · Frankfurt am Main, DE
Wilfrid Tews · Bechhofen, DE

Key dates

Filing date	Oct 9, 2000
Grant date	Jan 4, 2005
Priority date	—
Expiry date	Apr 3, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31909
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relate to the use of a multi-layer polypropylene film as an in-mold label used in a blow molding methods. According to the invention, the label film is laid inside the hollow mold of a blow molding machine, comprises an inner protective layer that faces the receptacle to be molded, and comprises an outer protective layer that is in contact with the hollow mold, whereby the inner protective layer has a roughness Rz of at least 3.5 μm.

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