Method and apparatus for producing synthetic plastics products, and product produced thereby
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United States of America Patent
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-
Feb 5, 1980
Grant Date -
N/A
app pub date -
Mar 7, 1978
filing date -
Apr 19, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for working up thermoplastic synthetic resin material, in particular unsorted thermoplastic synthetic resin waste material into an article having the working and processing properties of wood, and in which the material is subjected to a mixing operation in a housing including a screw member, and is fluidized, moulded, cooled in the mould, and removed from the mould. According to the invention, the synthetic resin material is supplied to an extruder without a screen member and without an extrusion nozzle, and kept therein until there is obtained a material that is fluid owing to temperature increase, and which material contains a gas when it leaves the extruder. The material is then passed into a mould having open ends, one of which is connected to the outlet of the extruder.
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