Manufacture of a composite material

Details Manufacture of a composite material Manufacture of a composite material

B - Operations, Transporting

29

C

B29C 70/24 (2006.01) B29B 11/16 (2006.01) B29C 70/54 (2006.01) D05C 15/24 (2006.01) B29C 67/14 (1990.01)

Patent

CA 2085253

2085253 9200845 PCTABS00010 Apparatus for fastening together a plurality of horizontal layers of intermediate fabric material to form a stack (2) includes a first knife blade (4). The blade (4) has a forward cutting edge (6), and has a longitudinal slot (8) located therein. A second flat knife blade (10) is in sliding contact with the blade (4). The blade (10) is stationary, and its forward cutting edge (12) is located at a pre-selected distance above the upper surface (13) of the stack (2). The blade (4) is advanced to cut through the stack (2) until the slot (8) is clear of the lower face (16) of the stack. A pre-selected length of a tow (18) is threaded through the slot (8) to extend equal distances each side of the blade (4). This blade (4) is then withdrawn until the cutting edge (12) of the blade (10) cuts the tow loop to form two independent tow pieces (20, 22). These pieces (20, 22) are each folded back onto the upper and lower faces (13, 16) of the stack (2) which is then cured.

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