B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 51/18 (2006.01) B29B 13/02 (2006.01) B29C 51/46 (2006.01)
Patent
CA 2301405
A sheet of plastic to be thermoformed into a appliance liner is brought to a substantially uniform temperature, preferably to a temperature differential of less than 5 degrees F throughout, by directing a fluid medium upon opposing side surfaces of the sheet. In the most preferred form of the invention, the fluid medium is constituted by air which is heated, impinged upon the opposing surfaces and recirculated, with the temperature and flow rate of the air being controlled based on sensed operating parameters.
Anderson Ronald K.
Fu Xiaoyong
Mandel Sheldon W.
Tirrell Steven G.
Finlayson & Singlehurst
Maytag Corporation
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