METHOD OF MAKING A PRE-IMPREGNATED COMPOSITE MATERIAL

摘要

The disclosure describes a method of making a pre-impregnated composite material of asbestos fibre weaving that comprises the steps of passing a bidirectionally woven asbestos fabric in a resin bath formed between a pair of impregnating rollers to form an impregnated sheet. Both faces of the latter is covered with a film of plastic material to form a laminated sheet which is then wound onto a roller. This laminated roll is left to mature and is then refrigerated prior to being used for subsequent moulding.