Processes for forming plastic, apparatuses for forming...

Details Processes for forming plastic, apparatuses for forming... Processes for forming plastic, apparatuses for forming...

B - Operations, Transporting

29

C

B29C 41/14 (2006.01) B29C 33/02 (2006.01) B29C 33/76 (2006.01) B29C 41/22 (2006.01) B29C 70/46 (2006.01) B32B 27/06 (2006.01)

Patent

CA 2437221

Process and apparatus (10) for forming plastics by heating an open mold (12) and contacting the open mold (12) with plastic particulate material (16) held within a container (14) to form a melted skin on the mold (12), and resulting articles made therefro. The mold (12) is provided with a carrier (18), which may include heating and cooling lines for achieving a desired mold temperature. Single skin molded articles may be multi-layered with or without paint on the surface. Multiple skin moled articles may include sandwiched layers of plastic filler or expandable foam filled centers, with or without various inserts or reinforcements.

L'invention concerne un procédé et un appareil (10) pour former des plastiques, consistant à chauffer un moule ouvert (12) et à mettre en contact ce moule ouvert (12) avec une matière particulaire plastique (16), maintenue à l'intérieur d'un conteneur (14), de manière à former une pellicule fondue sur le moule (12) et à obtenir des articles formés selon cette invention. Ce moule (12) présente un élément porteur (18), pouvant renfermer des conduits de chauffage et de refroidissement qui permettent d'atteindre une température de moule souhaitée. Des articles moulés à pellicule simple peuvent être multicouche, enduits ou non de peinture sur leur surface. Des articles moulés à pellicule multiple peuvent présenter des couches de charge plastique, agencées en sandwich, ou des parties centrales en mousse expansée, avec ou sans inserts ou renforcements divers.

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