B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 5/28 (2006.01) B29C 70/08 (2006.01) B29C 70/24 (2006.01) B29C 70/46 (2006.01) B29D 24/00 (2006.01) B32B 38/08 (2006.01) B29C 67/12 (1990.01)
Patent
CA 2110051
A three-dimensional textile (3) formed from two sheets of textile (5, 6) placed face to face and connected together by a plurality of extensible threads (10) is impregnated with resin and inserted between two layers (16, 17) so as to form a layered structure (1). This layered structure (1) is inserted between two dies (25, 26) of a heated press which is subsequently closed to allow the resin impregnating the structure to distribute itself uniformly. The layers (16, 17) are then attached by vacuum to the faces of the dies (25, 26) which are then opened through a first controlled distance within the limit of the elastic recovery of the three-dimensional textile (3). The outermost layers of the structure (1) are then polymerised by heating of the dies (25, 26) while the resin impregnating the threads (10) remains in a plastic state. The lower die (25) is then released in the plane in which it lies and the dies (25, 26) are then moved apart through a second distance so as to stretch the threads of the three-dimensional textile and align them substantially vertically; the floating die (25, 26) is then locked. The dies (25, 26) are then moved away from each other to a predetermined distance to extend the threads (10) completely and the press (28) is kept in this position until all the resin has polymerised completely, the structure hardening in the position assumed.
Metalleido S.r.l.
Ridout & Maybee Llp
LandOfFree
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