A method of manufacturing a ud-reinforced pwb laminate

B - Operations – Transporting – 29 – C

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B29C 70/20 (2006.01) B29C 70/08 (2006.01) B29C 70/50 (2006.01) B32B 37/00 (2006.01) B32B 37/22 (2006.01) H05K 1/03 (2006.01) H05K 1/14 (2006.01) H05K 3/02 (2006.01) H05K 3/46 (2006.01) B32B 31/00 (1995.01)

Patent

CA 2140756

The invention relates to a method of manufacturing a composite laminate, preferably a cross-ply laminate, in which pro- cess unidirectionally oriented (UD) fibres (3) are provided with matrix material (7) and, together with a pre-formed non-flowing UD composite or cross-ply laminate, passed through a laminating zone (13) in layers of at least two different orientational direc- tions. More particularly, the invention relates to the manufacture of composite material which is pre-eminently suited to be used as a supporting substrate for printed wire boards. The method according to the invention is directed in particular to the utilisation of a double belt press, both for making the pre-formed non-flowing UD composite and for the manufacture of the final laminate. The invention also comprises printed wire boards (PWBs) and multilayer PWBs.

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