Title:
VACUUM FORMING A LAMINATE CHARGE
Document Type and Number:
WIPO Patent Application WO/2018/046908
Kind Code:
A3
Abstract:
In a forming step, a suction force is generated between a forming tool (10) and an impermeable sheet (60) which causes the impermeable sheet to press the laminate charge against a male corner (6, 8) of the forming tool and into a female corner (7, 9) of the forming tool. The male corner is positioned between first and second parts of the laminate charge, and the female corner is positioned between second and third parts of the laminate charge. During the forming step, gas is injected between the forming tool and part of the laminate charge to create a gas cushion between the forming tool and the third part of the laminate charge. This gas cushion inhibits the third part of the laminate charge from becoming clamped against the forming tool as the laminate charge is pressed into the female corner of the forming tool.
Inventors:
WALLACE ALEXANDER STEPHEN (GB)
Application Number:
PCT/GB2017/052591
Publication Date:
April 19, 2018
Filing Date:
September 06, 2017
Export Citation:
Assignee:
UNIV BRISTOL (GB)
International Classes:
B29B11/16; B29C70/44
Foreign References:
| US4946640A | 1990-08-07 | |||
| DE102011119046A1 | 2013-05-23 | |||
| EP2206598A1 | 2010-07-14 | |||
| EP2047972A1 | 2009-04-15 | |||
| US6610229B1 | 2003-08-26 | |||
| DE102015200813A1 | 2015-08-27 | |||
| GB2454881A | 2009-05-27 |
Attorney, Agent or Firm:
RIBEIRO, James Michael (GB)
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