Abstract
The integration of woven thermoplastic fabrics on to the surface of glass mat thermoplastic (GMT) has been successfully marketed as GMTex, by Symalit, in conjunction with Vetrotex. This has shown to be a viable option to allow for the use of glass reinforced polypropylene composites in structural applications, where the performance of GMT alone is inadequate. The first volume application was the bumper beam for the Peugeot 406 and minivan in 1998. The second application in production is the rear subframe lid for the Volvo V70 4×4, where it is part of an assembly with aluminium. These components are produced by compression moulding. Isothermal squeeze flow testing over various platen closing rates has been used to model the rheological behaviour during processing of random fibre composites, both GMT and SMC, Gibson et al. [1]. A Power Law model for extensional flow has been successfully applied to characterise the materials.
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