Patent · US Active

Thermoforming a continuous foil

US7451952B2 · kind B2 · utility

1Cited by

4References

11Claims

0Family size

Assignee

UHLMANN PAC-SYSTEME GMBH & CO. KG · DE

Inventors

Werner Eck · Laupheim, DE
Werner Florczak · Schemmerhofen, DE
Norbert Damaschke · Seligenstadt, DE

Key dates

Filing date	Aug 27, 2004
Grant date	Nov 18, 2008
Priority date	—
Expiry date	Nov 13, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2791/006
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A section of a foil is sandwiched between an upper die and a first lower die and heat deformed into a cavity of the first lower die while simultaneously synchronously displacing the upper die, the first lower die, and the foil downstream. Then the upper die is raised and recirculated back upstream while cooling the section of foil in the cavity of the first lower die and displacing the lower die with the section of the foil downstream. Another section of the foil is sandwiched between the upper die and a second lower die and heat deformed into a cavity of the second lower die while simultaneously synchronously displacing the upper die, the second lower die, and the foil downstream. The first lower die is disengaged from the foil in the downstream station and recirculated back upstream to the upstream station. These steps are then repeated.

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