Edge-protection tape

• US 9,899,552 B2
• Filed: 06/19/2013
• Issued: 02/20/2018
• Est. Priority Date: 06/20/2012
• Status: Active Grant

• Current Assignee: Tesa SE (Maxingvest AG)
• Original Assignee: Tesa SE (Maxingvest AG)
• Inventors: Watzke, Wilhelm, Kluge-Paletta, Werner, Stein, Andreas
• Primary Examiner(s): GARDNER, SHANNON M
• Application Number:
  US13/921,959
• Publication Number:
  US 20130340827A1
• Time in Patent Office: 1,707 Days
• CPC Class Codes: B32B 2266/0221 Vinyl resin
• CPC Class Codes: B32B 2266/0242 Acrylic resin
• CPC Class Codes: B32B 2266/025 Polyolefin vinyl or acrylic copolymers B32B2266/0221, B32B2266/0242
• CPC Class Codes: B32B 2405/00 Adhesive articles, e.g. adhesive tapes labels B32B2519/00
• CPC Class Codes: B32B 2457/12 Photovoltaic modules
• CPC Class Codes: B32B 27/065 of foam
• CPC Class Codes: B32B 27/304 comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: C09J 2203/322 for the production of solar panels
• CPC Class Codes: C09J 7/26 Porous or cellular plastics
• CPC Class Codes: C09J 7/381 based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
• CPC Class Codes: H01L 31/048 Encapsulation of modules
• CPC Class Codes: H01L 31/0488 Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy
• CPC Class Codes: Y10T 428/24967 Absolute thicknesses specified

Abstract

A self-adhesive edge-protection tape is intended to improve the protective effect for glass edges. This is achieved by providing an adhesive tape which comprises, in sequence directed towards the substrate to be covered, a backing layer (hard phase) and a soft phase comprising a polymer foam, a viscoelastic composition and/or an elastomeric composition, where the thickness of the hard phase is ≦150 μm, the thickness of the soft phase is ≧200 μm and the ratio of the thickness of the soft phase to the thickness of the hard phase is ≧4. The invention also relates to a solar module which comprises an adhesive tape according to the invention adhesive-bonded around at least one portion of the edges thereof, and the use of the claimed adhesive tape for the protection of edges of a solar module.

Claims

1. Adhesive tape for the protection of glass edges, comprising, in sequence directed towards the substrate to be covered,

a hard phase which is a backing layer, and

a soft phase having a polymer basis selected from polyolefins and polyacrylates, and mixtures thereof, said soft phase comprising a polymer foam,

where the thickness of the hard phase is ≦

150 μ

m, the thickness of the soft phase is ≧

200 μ

m and the ratio of the thickness of the soft phase to the thickness of the hard phase is ≧

4,

wherein the soft phase comprises a first pressure-sensitive adhesive layer arranged above the polymer foam and a second pressure-sensitive adhesive layer arranged below the polymer foam.

2. The adhesive tape according to claim 1, wherein the hard phase comprises a polymer selected from the group consisting of polyvinyl chlorides, polyethylene terephthalates, polyurethanes, polyolefins, polybutylene terephthalates, polycarbonates, polymethyl methacrylates, polyvinyl butyrals, ionomers and mixtures of two or more thereof.

3. The adhesive tape according to claim 2 wherein polymer basis of the hard phase is one selected from the group consisting of polyvinyl chlorides, polyethylene terephthalates, polyurethanes, polyolefins and mixtures thereof.

4. The adhesive tape according to claim 1 wherein the thickness of the soft phase is up to 1800 μ

m.

5. The adhesive tape according to claim 1 wherein the flexural stiffness of the hard phase is at most 10 mN/mm.

6. A solar module comprising an adhesive tape according to claim 5, wherein the adhesive is bonded around at least one portion of the edges of the solar module.

7. The adhesive tape according to claim 1 wherein the thickness of the soft phase is 300-1500 μ

m.

8. The adhesive tape according to claim 1, wherein the polymer foam has a polymer basis selected from one or more polyolefins, and the pressure-sensitive adhesive layers has a polymer basis selected from one or more polyacrylates.

9. The adhesive tape according to claim 1, wherein the polymer foam has a pressure-sensitive adhesion property, and a polymer basis composed of one or more polyacrylates.