Method of forming a thermoplastic layer on a layer of adhesive

Details Method of forming a thermoplastic layer on a layer of adhesive Method of forming a thermoplastic layer on a layer of adhesive

B - Operations, Transporting

05

D

B05D 7/00 (2006.01) B05D 1/24 (2006.01)

Patent

CA 2321978

A method of forming a thermoplastic layer on an adhesive layer is provided. In the steps of the method, a thermoplastic powder is provided having a melt flow index of at least about 0.008 grams/10 minutes, the powder is applied to at least one surface of the adhesive layer to form a particle layer, and the combination is then subjected to elevated heat and pressure until particle layer is fused into a continuous layer and the continuous layer is bonded to the adhesive layer.

L'invention concerne un procédé de formation d'une couche thermoplastique sur une couche d'adhésif. Le procédé comporte les étapes consistant à prévoir une poudre thermoplastique présentant un indice de fusion d'au moins 0,008 g/10 min environ, appliquer la poudre sur au moins une surface de la couche d'adhésif de façon à former une couche de particules, soumettre la combinaison à une chaleur et une pression élevées jusqu'à ce que la couche de particules soit fondue en une couche continue, et coller la couche continue sur la couche d'adhésif.

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