Refrigerator liner structures

Details Refrigerator liner structures Refrigerator liner structures

1991-09-12

1993-06-22

Dorner, Kenneth J.

Supports: cabinet structure

Spaced insulated wall

Refrigerator cabinet

220453, 220467, 4283144, 4283148, 4283197, 428515, 428517, 428519, A47B 8100

Patent

active

052211363

ABSTRACT:
A refrigerator cabinet is provided with a plastic liner, the inside wall of the refrigerator, which is resistant to chemical degradation by fluorocarbons. Freon and Freon substitutes used as blowing agents for foaming the insulation contained between the outer metal cabinet and the inside wall of the refrigerator can cause blistering, cracking, and sometimes dissolution of materials used to form the plastic liner, which is the inside wall of the refrigerator. There is now provided a plastic liner which is resistant to those blowing agents and particularly to those blowing agents which are partially halogenated and tend to be more aggressive than Freon. The plastic liner wall maintains impact strength and toughness after exposure to fluorohydrocarbons conventionally employed in refrigerator units for in situ polyurethane foam production.

REFERENCES:
patent: 3960631 (1976-06-01), Weiss et al.
patent: 4005919 (1977-02-01), Hoge et al.
patent: 4196950 (1980-04-01), Churchill et al.
patent: 4707401 (1987-11-01), Benford
patent: 5009952 (1991-04-01), Klepsch et al.
patent: 5118174 (1992-06-01), Benford et al.

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