Patent · US Expired

Method of producing a molded part that is deep drawn from a thermoplastic foil

US6913728B2 · kind B2 · utility

2Cited by

3References

9Claims

0Family size

Assignee

Benecke-Kaliko AG · DE

Inventors

Gunter Vogt · Rinteln, DE
Rainer Ohlinger · Hannover, DE

Key dates

Filing date	Dec 30, 2002
Grant date	Jul 5, 2005
Priority date	—
Expiry date	Dec 25, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/722
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method is provided for producing a molded part that is deep drawn from a thermoplastic foil. An outer surface of the thermoplastic foil is provided with a positive depth structure, under the effect of heat and pressure, by means of a stamping or embossing roller that has a negative depth structure. In at least one extent of a surface of the embossing roller, the negative depth structure of the roller is compressed in such surface regions thereof that effect a stretching of the foil during deep drawing. Subsequently, at least a portion of the foil is deep drawn.

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