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 an outer metal cabinet and on 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 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 .