Process for producing preformable continuous strand mats

Details Process for producing preformable continuous strand mats Process for producing preformable continuous strand mats

B - Operations, Transporting

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B29C 70/46 (2006.01) B29C 35/00 (2006.01) C08J 5/04 (2006.01) C08J 5/24 (2006.01) B29C 35/02 (2006.01) B29C 35/16 (2006.01)

Patent

CA 2001306

PROCESS FOR PRODUCING PREFORMABLE CONTINUOUS STRAND MATS ABSTRACT OF THE DISCLOSURE A process for forming a continuous strand preformable mat is disclosed which consists of applying a binder matrix material which includes a thermosetting polyester binder material and a thermoplastic polyester binder to the continuous strand mat. The mat is heated such that the thermosetting binder material cures and hardens while the thermoplastic binder material softens and flows around strand intersections. The mat is thereafter cooled in order to solidify the thermoplastic polyester material of the binder matrix for additional handling for packaging and for subsequent handling by the customer. The preforms are made by heating the mat to oven 93.3°C (200°F), placing in a cold mold, and then closing the mold to form and solidify the mat shape.

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