Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Stratified or layered articles
Patent
1988-06-24
1990-08-28
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Stratified or layered articles
264112, 264119, 264137, 264258, 156 622, 156242, B29C 4304, B29C 4318
Patent
active
049523562
ABSTRACT:
A process for the hot press moulding of moulded articles, such as the internal linings of motor vehicles or the like is described, in which planar blanks of tangled fibre mat fleece mixed with binders, using at least one mould, are permanently deformed in a multidimensional moulding process after evaporating on the mat fleece. A stabilizing support is introduced during the deformation process on at least one side between the shaping surface of the mould and the mat fleece. It is in the form of a fibrous sandwich layer which is substantially elongation-free in the surface direction at ambient temperature, but is plastically deformable within the hot press mould under the action of heat. With and/or immediately after the moulding process, said stabilization support becomes a substantially elongation-free, inflexible covering. The geometry of the flexible stabilizing support is to be made to coincide with that of the mat fleece blank to be deformed.
REFERENCES:
patent: 3846219 (1974-11-01), Kunz
patent: 4378265 (1983-03-01), Kiss
patent: 4432716 (1984-02-01), Kiss
patent: 4503115 (1985-03-01), Hemels
patent: 4521477 (1985-06-01), Kiss
patent: 4655861 (1987-04-01), Kiss
Durkin II Jeremiah F.
Societe Generale
Woo Jay H.
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