Laminate comprising at least one polyether block copolymer...

Details Laminate comprising at least one polyether block copolymer... Laminate comprising at least one polyether block copolymer...

B - Operations, Transporting

32

B

B32B 7/12 (2006.01) A43B 13/04 (2006.01)

Patent

CA 2637744

The present invention relates to a laminated product comprising a first substrate and a second substrate that adhere to each other only by means of a cured and crosslinked layer of a polymeric adhesive containing no organic solvent, characterized in that: a) the polymeric material of either or both of the first and second substrates is a polyether block copolymer; and b) the polymeric adhesive is a moisture-crosslinkable hot-melt adhesive based on a polyurethane prepolymer or on a blend of polyurethane prepolymers containing free isocyanate (-N=C=O) functional groups. The present invention also relates to a process for manufacturing such a laminate and to its use in the shoe industry, especially for the manufacture of soles and most particularly sports shoe soles.

La présente invention concerne un produit stratifié comprenant un premier substrat et un second substrat adhérant l'un à l'autre uniquement au moyen d'une couche durcie et réticulée d'un matériau polymère adhésif exempt de solvant organique, caractérisé en ce que : a) le matériau polymère de l'un au moins du premier et du second substrat est un copolymère à blocs polyéther ; et b) le matériau polymère adhésif est un matériau thermofusible réticulable en présence d'humidité à base d'un prépolymère de polyuréthane ou d'un mélange de prépolymères de polyuréthane comportant des fonctions isocyanate libres (- N=C=O). La présente invention concerne également un procédé de fabrication d'un tel stratifié et son utilisation dans l'industrie de la chaussure, notamment pour la fabrication de semelles et tout particulièrement de semelles de chaussures de sport.

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