Hotmelt adhesive for glueing dvds

Details Hotmelt adhesive for glueing dvds Hotmelt adhesive for glueing dvds

C - Chemistry, Metallurgy

09

J

C09J 153/02 (2006.01) C08L 53/02 (2006.01) G11B 7/26 (2006.01)

Patent

CA 2384280

The invention relates to a hot-melt adhesive based on at least one thermoplastic elastomer, at least one hydrocarbon resin, at least one poly alpha olefin and at least one polar wax carrying a functional group. Said adhesives are suitable for glueing substrate halves of Digital Versatile Disks (DVDs) and enable economical DVD production. The DVDs glued in this manner meet all modern quality requirements established for said storage media with high information density even after being exposed to aging by heat and humidity.

L'invention concerne des adhésifs thermofusibles contenant au moins un élastomère thermoplastique, au moins une résine d'hydrocarbure, au moins une poly-.alpha.-oléfine et au moins une cire polaire comportant des groupes fonctionnels. Ces adhésifs thermofusibles s'utilisent pour le collage des moitiés de substrats de disques numériques polyvalents (DVD). Ils permettent de produire de manière économique ces DVD. Les disques ainsi collés répondent aux exigences de qualité modernes, même à celles de vieillissement à la chaleur et à l'humidité, qui sont imposées à ces supports de données à haute densité d'informations.

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