Use of a double-sided PSA tape for bonding in the production of electronics articles

1. A method for fastening silicone foam or silicone rubber to a substrate, which comprises fastening said silicone foam or rubber to said substrate with a double-sided adhesive tape comprising a backing and first and second layers of adhesive adhered thereto, the first layer of adhesive being composed of an acrylate-based pressure-sensitive adhesive and the second layer of adhesive being composed of a crosslinked pressure-sensitive silicone adhesive, said pressure-sensitive silicone adhesive being a condensation crosslinking system.

2. The method of claim 1 , wherein said substrate is a component of an electronic device.

3. The method of claim 2 , wherein said electronic device is a mobile telephones or liquid-crystal display (LCD).

4. The method of claim 1 , wherein at least the pressure-sensitive silicone adhesive is physically and/or chemically crosslinked.

5. The method of claim 4 , wherein at least the pressure-sensitive silicone adhesive is crosslinked by irradiation with electron beams.

6. The method of claim 1 , wherein the pressure-sensitive acrylate adhesive side effects fastening on the substrate and the pressure-sensitive silicone adhesive side effects fastening on the silicone foam or silicone rubber.

7. The method of claim 1 , wherein said condensation-crosslinking system is a system comprised of polydimethylsiloxanes and silicate resins or polydiphenylsiloxanes and silicate resins.

8. Adhesively bonded assembly comprising:

a) a polymeric substrate,

b) a double-sided adhesive tape comprising a backing and first and second layers of adhesive adhered thereto the first layer of adhesive being composed of an acrylate-based pressure-sensitive adhesive and the second layer of adhesive being composed of a condensation crosslinked pressure-adhesive silicone adhesive, and

c) a silicone foam or silicone rubber, the pressure-sensitive acrylate adhesive facing the polymeric substrate and the pressure-sensitive silicone adhesive facing the silicone foam or silicone rubber.

9. The adhesively bonded assembly of claim 8 , wherein said polymeric substrate is an electronic component.

10. A double-sided adhesive tape for fastening silicone foam or silicone rubber in electronic components, comprising a backing and first and second layers of adhesive, the first layer of adhesive being composed of an acrylate-based pressure-sensitive adhesive and the second pressure-sensitive adhesive being composed of a condensation crosslinked pressure-sensitive silicone adhesive.