Title:
DEVICE AND METHOD FOR THERMOFORMING AN OBJECT HAVING A BACK DRAFT PORTION
Document Type and Number:
WIPO Patent Application WO2004009333
Kind Code:
A3
Abstract:
The invention concerns a device and method for thermoforming an object (10) having a back draft portion (10B) comprising a thermoforming mould (12) having at least two back draft parts (12A, 12B) proximate one end (12') and a base part (13), as well as a countermould (18) and a mobile thermoforming piston (20). The device comprises retaining means (23A, 23B) for maintaining the rim (10A) of the object (10) relative to the countermould (18) and for stripping said object, said parts (12A, 12B 13) of the mould (12) and the retaining means (23A, 23B) are adapted to be controlled in accordance with a sequence wherein the two parts of the back draft (12A, 12B) are spaced apart, the retaining means (23A, 23B) are active and maintain the object (10) against the countermould (18) and at least the base part (13) of the mould (12) is spaced away from the countermould while the retaining means are active.
Inventors:
SCHWAB DOMINIQUE (FR)
COOPER TIMOTHY (FR)
COOPER TIMOTHY (FR)
Application Number:
PCT/FR2003/002257
Publication Date:
April 08, 2004
Filing Date:
July 17, 2003
Export Citation:
Assignee:
ERCA FORMSEAL (FR)
SCHWAB DOMINIQUE (FR)
COOPER TIMOTHY (FR)
SCHWAB DOMINIQUE (FR)
COOPER TIMOTHY (FR)
International Classes:
B29C49/54; B29C51/26; B29C51/34; B29C51/44; B29C35/16; B29C43/00; B29C51/02; B29C51/04; B29C51/42; B29L22/00; (IPC1-7): B29C51/44; B29C51/34; B29C51/26
Foreign References:
| EP1063077A1 | 2000-12-27 | |||
| FR1554475A | 1969-01-17 |
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