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DIN EN 13677-1:2003
Reinforced thermoplastic moulding compounds - Specification for GMT - Part 1: Designation
1.1 This part establishes a data block system for the designation of glass mat reinforced thermoplastic composite sheet(GMT). 1.2 The types of thermoplastic composite sheets are differentiated from each other by a classification system based on information about basic polymer parameters, fillers/reinforcement content and type, intended method of processing and/or manufacturing, specific characteristics and designatory properties.
Deutsches Institut für Normung [din]