Hot melt thermoplastic adhesive foam system

Details Hot melt thermoplastic adhesive foam system Hot melt thermoplastic adhesive foam system

B - Operations, Transporting

29

C

32/46, 18/677, 1

B29C 65/48 (2006.01) B67D 7/80 (2010.01) B27G 11/00 (2006.01) C09J 5/08 (2006.01)

Patent

CA 1102227

Abstract of the Disclosure A novel method and several different unique modificat- ions of apparatus are disclosed for manufacturing a novel adhesive product. The product which results from use of the foam is a pair of substrates adhered together by compressed foam. The adhesive foam is created by intimately mixing air or any relatively inert gas with thermoplastic adhesive while the adhesive is in tile liquid state and then pressurizing the liquid/gas mixture so as to force the gas into solution with the liquid adhesive. The liquid adhesive is subsequently dispensed at atmospheric pressure with the result that the gas is released from the solution and becomes entrapped in the adhesive to form a homogenous closed cellular adhesive foam.

282593

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