Manufacture of thin walled plastics material articles

Details Manufacture of thin walled plastics material articles Manufacture of thin walled plastics material articles

B - Operations, Transporting

29

B

18/1077, 18/1174

B29B 13/02 (2006.01) B29C 35/06 (2006.01) B29C 35/04 (2006.01)

Patent

CA 1055667

A B S T R A C T In the manufacture of plastics articles by forming them from heat-softened thin sheet materials it is desirable to accurately control the temperature throughout the material. This requirement is met by passing the mater- ial in contact with thermostatically controlled heating rollers within a hot-air chamber prior to the forming process itself. The controlled heating process is applicable to several thermoforming techniques such as vacuum forming and pressure forming for making thin walled articles such as drinking cups.

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