Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1982-03-29
1983-12-06
Anderson, Philip E.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
249 79, 249 80, 264 464, 264 467, 264225, 264337, 264DIG83, 425DIG29, B29D 2704
Patent
active
044193076
ABSTRACT:
A method for manufacturing a heat-insulating member, such as e.g. a door or housing of a refrigerator, including a shell and a foamed heat-insulating material filled in the shell and a jig used therefor. The jig is intended to hold the shell lest the shell of the heat-insulating member to be manufactured should be deformed when a foamable liquid composition is foamed in the shell. In the jig of this invention, a jig body is formed of a heat-insulating material. The method of this invention comprises the steps of holding the shell in a hollow state by means of two jigs, injecting the foamable liquid composition into the shell to foam the same in the shell. Since the jig body of the jig of this invention is made of a heat-insulating material, the necessity of external heating, which is essential to the conventional method, is substantially obviated.
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Kohara Koujirou
Miyano Susumu
Anderson Philip E.
Tokyo Shibaura Denki Kabushiki Kaisha
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