DOUBLE-SIDED ADHESIVE TAPE

• US 20090169793A1
• Filed: 05/02/2007
• Published: 07/02/2009
• Est. Priority Date: 05/11/2006
• Status: Abandoned Application

• Current Assignee: BASF AG (BASF SE)
• Original Assignee: BASF SE
• Inventors: Aydin, Oral, Dragon, Andree, Kirsch, Stefan
• Application Number:
  US12/297,270
• Publication Number:
  US 20090169793A1
• Time in Patent Office: Days
• US Class Current: 428/41.300
• CPC Class Codes: C09J 7/22 Plastics; Metallised plastics
• CPC Class Codes: C09J 7/38 Pressure-sensitive adhesives [PSA]
• CPC Class Codes: Y10T 428/1452 Polymer derived only from ethylenically unsaturated monomer

Abstract

Multilayer laminate comprising at least two pressure-sensitive adhesive layers and a carrier layer located between the pressure-sensitive adhesive layers and comprising a synthetic polymer.

Claims

1. A multilayer laminate comprising at least two pressure-sensitive adhesive layers and a carrier layer located between the pressure-sensitive adhesive layers and comprising a synthetic polymer.

2. The multilayer laminate according to claim 1, wherein the two pressure-sensitive adhesive layers are each composed of a pressure-sensitive adhesive (PSA) which comprises a synthetic polymer as binder, hereinafter referred to as PSA polymer.

3. The multilayer laminate according to claim 1, wherein the PSA polymer is an emulsion polymer.

4. The multilayer laminate according to claim 1, wherein the carrier layer is composed of a carrier composition which comprises an emulsion polymer as binders hereinafter referred to as carrier polymer.

5. The multilayer laminate according to claim 1, wherein the carrier layer is not tacky.

6. The multilayer laminate according to claim 1, wherein the carrier polymer has a glass transition temperature greater than 0°

C.

7. The multilayer laminate according to claim 1, wherein the thickness of the pressure-sensitive adhesive layers and of the carrier layer is in each case 1 to 100 μ

m.

8. The multilayer laminate according to claim 1, comprising a detachable antistick layer on one or both sides.

9. The multilayer laminate according to claim 1, obtainable by a coating method in which the pressure-sensitive adhesive layers and the carrier layer are in aqueous dispersion or solution form.

10. A method of producing a multilayer laminate according to claim 1, which comprises coating out the pressure-sensitive adhesive layers and the carrier layer in aqueous dispersion or solution form and then carrying out drying.

11. The method according to claim 10, wherein the coating of the pressure-sensitive adhesive layers and of the carrier layer takes place simultaneously in one method.

12. The method according to claim 10, wherein the coating of the pressure-sensitive adhesive layers and of the carrier layer takes place using a multiple cascade die.

13. The method according to claim 10, wherein the coating method is a sliding method.

14. The method according to claim 10, wherein the coating method is a curtain coating method.

15. A method of using the multilayer laminate according to claim 1 as a self-adhesive article.

16. A method of using the multilayer laminate according to claim 1 as a double-sided adhesive tape.