Self-adhesive laminate and method of making it

Abstract

A decorative laminate includes a laminate substrate coated with an adhesive layer. The adhesive layer is a layer of a physically setting, solvent-free adhesive material including an acrylic polymer. The adhesive layer is self-adhesive at room temperature. The adhesive-coated laminate substrate has a peeling-off force of at least 0.2 N/mm², after application on a carrier. A method for the production of the adhesive-coated laminate substrate, its use as a coating material, and a composite of the adhesive-coated laminate substrate and a carrier material are also provided.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] The subject matter of this application is related to Provisional Patent Application 60 / 652,257, filed on 11 Feb. 2005, and International Patent Application PCT / EP2004 / 009001, filed 12 Aug. 2004. International Patent Application PCT / EP2004 / 009001 in turns claims priority based on German Patent Application DE 2003 103 7351, filed 14 Aug. 2003. The disclosure of these related patent applications are hereby incorporated by reference herein in their entirety and made a part hereof, including but not limited to those portions that specifically appear hereinafter.FIELD OF THE INVENTION [0002] This invention relates to a decorative laminate substrate that is coated with a self-adhesive layer of an adhesive material including an acrylic polymer. Furthermore, the invention concerns a method for the production of such a laminate. BACKGROUND OF THE INVENTION [0003] Laminated sheets (otherwise referred to as “laminate substrates”) are generally used ...

AI Technical Summary

Benefits of technology

[0023] A decorative laminate with an adhesive layer is made available, which is characterized in that the adhesive layer is a layer of a physically setting, solvent-free adhesive, which is self-adhesive at room temperature, wherein the laminated sheet has a peeling-off force of at least 0.2 N/mm2 after the application on a carrier at room temperature. It is possible, in a manner which was not readily predictable, to make available a laminate, which quickly and firmly adheres on a carrier, without having to accept long waiting times.

[0024] Furthermore, the following advantages are attained by this invention. The application of the adhesive-coated laminate substrate on the carrier can be done without the use of high pressures and increased temperatures. A simple short pressing pressure, for example, manually, on the adhesive-coated laminate substrate is generally sufficient for immediate adhesion to the carrier. In addition, the adhesive-coated laminate substrate adheres stably on a carrier. Thus, one obtains, for example, a very high peeling-off force of the adhesive-coated laminate substrate from the carrier. Furthermore, a high peel resistance and a high static shearing strength are attained. Also with a temperature load of the composite of the adhesive-coated laminate substrate and carrier over a longer time, the adhesion remains stable and no peeling of the decorative adhesive-coated laminate substrate from the carrier appears. The adhesion characteristics, such as the peeling force, the shearing strength, and the peel resistance also are essentially retained with a temperature load. The previously mentioned characteristics are already attained with a small application quantity or layer thickness of the adhesive so that it can be use

Problems solved by technology

With a nonuniform adhesive application and an inexact maintenance of the pressing pressure, pressing temperature, and/or pressing time, unsatisfactory results can be obtained during the cementing.

Thus, for example, excessively high temperatures can lead to warping and material damage.

Low temperatures or pressures often result, on the other hand, in an insufficient adhesion.

Furthermore, the use of solvent-containing adhesives is generally classified as problematic from a health and environmental policy viewpo

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