Adhesive material
AssigneeTesa SE
InventorsMarc Husemann, Stephan Zollner
Life of this patent
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Abstract
The invention relates to a pressure-sensitive adhesive. It is envisaged that the pressure-sensitive adhesive comprises a first layer and a second layer, the first layer being a heat-activatable pressure-sensitive adhesive which has a static glass transition temperature Tg,a or a melting point Tm,a of at least +30° C.; and the second layer being a polyacrylate pressure-sensitive adhesive which has a static glass transition temperature of not more than +15° C.
Claims13
A two-layer pressure-sensitive adhesive having only a first pressure sensitive adhesive layer joined to a second pressure-sensitive adhesive layer, wherein said first and second layers are in contact with each other, said first and second pressure sensitive adhesive layers optionally being joined to one another by means of physical or chemical pretreatment of said first pressure sensitive adhesive layer;
- the first pressure sensitive adhesive layer being a heat-activatable pressure-sensitive adhesive which has a static glass transition temperature Tg,a or a melting point Tm,a of at least +30° C.;
- and
- the second pressure sensitive adhesive layer being a polyacrylate pressure-sensitive adhesive which has a static glass transition temperature of not more than +15° C.
Dependencies are inferred from the claim text.