Multilayer adhesive tape
AssigneeTesa SE
InventorsBodo Szonn, Worner Kluge-Paletta, Werner Karmann
Life of this patent
Estimating the term…
Abstract
A single- or double-sided pressure-sensitive adhesive tape having an elastomeric backing layer, wherein a) the framework substance of the backing layer consists essentially of natural rubber or of a mixture of natural rubber and at least one styrenebutadiene rubber, b) an essential constituent of the backing layer is an electron beam-crosslinkable, polyfunctional crosslinker, c) a pressure-sensitive adhesive is applied to one or both sides of the backing layer, and d) between backing layer and pressure-sensitive adhesive there is an interlayer of a polyamide or of a mixture of polyamides.
Claims15
Single- or double-sided pressure sensitive adhesive tape having an elastomeric backing layer, comprising
- a) a backing layer comprising:
- (i) as the major component a natural rubber, or a mixture of natural rubber and at least one styrene-butadiene rubber, and
- (ii) a crosslinker chosen from the group consisting of an oligoacrylate and an oligovinyl ether, where the oligovinyl ether is chosen from the group consisting of a polyol, an oligoether and an oligourethane, each having at least two terminal vinyl groups,
- b) an interlayer of a polyamide, or a mixture of polyamides applied to one or both sides of said backing layer, and
- c) a pressure-sensitive adhesive applied to said interlayer on one or both sides of the backing layer,
- wherein said crosslinker is diffused into a side of the interlayer facing said backing layer, but wherein the crosslinker is substantially not diffused through to the surface of a second, opposite side of the interlayer facing said adhesive.
Dependencies are inferred from the claim text.