Method of making a plastic container with integral channel

Details Method of making a plastic container with integral channel Method of making a plastic container with integral channel

B - Operations, Transporting

29

C

B29C 45/00 (2006.01) B29C 45/17 (2006.01) B65D 1/40 (2006.01) F01P 11/02 (2006.01)

Patent

CA 2267640

A method of making fluid receiving plastic containers having walls with fluid circulatable channels integrally formed therein comprises the successive steps of injecting a molten thermoplastic material in a mold cavity having a channel configuration to define, in the container being mold, walls with thicker portions defining a rib configuration, injecting a pressurized gas throughout the rib configuration to displace molten material therein and to form a hollow channel therein, cooling the container being mold while maintaining gas pressure, venting the gas, removing the molded container from the mold and cutting through the hollow channel at two spaced locations to form inlet and outlet openings to the channel to thereby enable circulation of the fluid through the channel.

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