C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
117/161, 32/46,
C08J 9/12 (2006.01) B05B 7/00 (2006.01) B05B 7/12 (2006.01) B05B 7/16 (2006.01) B29B 7/74 (2006.01) C09J 5/08 (2006.01)
Patent
CA 1195104
ABSTRACT Foaming Thermoplastic Compositions (e.g. melt adhesive) Method and apparatus for providing a foamed mass of thermoplastic e.g. a hot melt adhesive on a substrate by introducing a foaming agent to the composition which has been melted by heating in excess of 100°C. The foaming agent is provided by water entrained in a carrier gas and is preferably introduced to the thermoplastic as it is dispensed from an applicator. The invention permits foaming of adhesives using readily available raw materials and simple equipment readily derivable from existing hot melt adhesive applicators.
427571
Freudenreich Herbert
Hartmann Waldemar
Ritschel Peter
Corporation Usm
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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