Bondable fastener for holding structural or functional parts...

F - Mech Eng,Light,Heat,Weapons – 16 – B

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F16B 11/00 (2006.01) B29C 45/00 (2006.01) B29C 65/48 (2006.01) B29C 65/52 (2006.01) F16B 37/04 (2006.01)

Patent

CA 2181468

The bondable fastener serves to hold structural or functional parts on essentially flat support elements. It consists of an adhesive-functional zone for establishing an adhesive bond with surface of the support element and at least one other holding ::one for establishing positive or non-positive connections with the structural part. The adhesive functional zone has a bonding surface that is provided with a hardenable and/or cross-linkable reactive hot-melt-type adhesive that is dry, i.e. is wearproof and non-viscous, at temperatures up to 80° C and that can very quickly be reactivated to establish a permanent adhesive bond when heat or some other form of energy is applied. The hot-melt-type adhesive used for this purpose is based on specific backbone bonding agents that set and harden through polymerization, polyaddition and/or polycondensation reaction mechanisms.

L'élément de fixation collable sert à maintenir des éléments structuraux ou fonctionnels sur des supports sensiblement plans. Il comporte une zone fonctionnel adhésive permettant d'établir une liaison par collage avec la surface du support (8) et au moins une zone de retenue (2) permettant d'établir des jonctions par liaison de forme ou de force avec l'élément structurel. La zone fonctionnelle adhésive comporte une surface adhésive (1) pourvue d'une colle à fusion (7) réactive durcissante et/ou réticulable, qui est sèche, c.-à-d. résistante à l'usure et non visqueuse, à des températures allant jusqu'à 80 DEG C, et qui peut être réactivée très rapidement par apport de chaleur ou d'une autre forme d'énergie, pour établir une liaison adhésive durable. A cet effet, la colle est à base de liants troncs spécifiques qui durcissent par des mécanismes de réaction de polymérisation, polyaddition et/ou polycondensation.

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