Spray foam

Spray foam is a chemical product of materials which bubble and expand up to 280 times its liquid volume after it is sprayed in place. This expansion makes it useful as a specialty packing material which forms to the shape of the product being packaged and produces a high thermal insulating value with virtually no air infiltration.

单词	Spray foam
释义	Spray foam 英语百科 Spray foam Spray foam is a chemical product of materials which bubble and expand up to 280 times its liquid volume after it is sprayed in place. This expansion makes it useful as a specialty packing material which forms to the shape of the product being packaged and produces a high thermal insulating value with virtually no air infiltration.
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