B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/953
B29D 3/02 (1980.01)
Patent
CA 1050223
Abstract of the Disclosure In a process of manufacturing composite bodies from thermoplastic material and glass fibre-reinforce- ed, hardenable plastics material, thermoplastic sheeting consisting particularly of polymethacrylate (acrylic glass) is used to make a preform which determines the basic shape of the end product and preferably forms its exposed side. The sheeting is coated at least on one side with the glass fibre-reinforced, hardenable plastic material, particularly unsaturated polyester resin (thermosettable resin), with additional use of a bond-improving agent. This coating is compacted and then permitted to harden. The surface of the preform on the side to be coated is contacted with a solvent for the thermoplastic material, which solvent consists, e.g., of an acryl monomer, styrene, acetone, methylene chloride, etc., before or during the application of the coating of the hardenable plastics material and for a time which is suffi- cient for a slight dissolution of the thermoplastic material in the area to be coated. As a result, the glass fibres can slightly enter the thermoplastic material during the applicat- tion and/or compacting of the coating material and the end product obtained after the hardening of the hardenable plas- tics material has a transitional zone in which the thermo- plastic material and the glass fibre-reinforced, hardenable plastics material are contained and inseparable joined.
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