Patent · US Expired

Method for the production of biologically-degradable packagings made from biaxially-drawn films

US7128969B2 · kind B2 · utility

27Cited by

25References

27Claims

0Family size

Assignee

Trespaphan GmbH · DE

Inventors

Detlef Busch · Saarlouis, DE
Marlies Rosenbaum · Bous, DE
Manfred Rosenbaum · Bous, DE

Key dates

Filing date	Apr 23, 2002
Grant date	Oct 31, 2006
Priority date	—
Expiry date	Apr 23, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31899
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for the plastic shaping of a biaxially-drawn film, comprising at least one base layer, containing at least one polymer (I), made from at least one hydroxycarboxylic acid and ≧0.2 wt %, based on the weight of the layer, of a thermoplastic polymer (II), different from polymer (I). Said film is plastically moulded by application of pneumatic and/or mechanical forces.

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