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edge protection tape

An edge and adhesive tape technology, applied in adhesives, adhesive products, film/sheet adhesives, etc., can solve problems such as glass breakage

Inactive Publication Date: 2019-06-21
TESA SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the use of aluminum frames for edge protection of solar modules has many attendant disadvantages
Where not only the cost of the frame represents a relatively high proportion of the total solar module cost, but also, the frame introduces weight, the aluminum framing method involves many steps, and there is a risk of glass shattering during application of the frame

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0059] Preference is given to carrying out the concentration process after the production (polymerization) of the polyacrylate and the further processing of the polyacrylate substantially free of solvents. The concentration process of the polymer can be carried out in the absence of crosslinker substances and accelerator substances. However, it is also possible to add compounds of these kinds to the polymer before the concentration process starts, thus allowing the concentration process to take place in the presence of one or more of said substances.

[0060] After the concentration step, the polymer can be transferred to a compounder. The concentration process and the compounding process can also optionally be carried out in the same reactor.

[0061] The weight average molar mass of polyacrylate M W Preferably 20000-2000000g / mol; very preferably 100000-1000000g / mol, most preferably 150000-500000g / mol (wherein the average molar mass M in this description W and polydispersi...

Embodiment

[0098] method:

[0099] A) Measuring bending stiffness

[0100] Bending stiffness was determined by using Wolf's Softometer KWS. Fix a 15 mm x 75 mm test strip of the material to be tested to the sample stand. The sample table can be tilted up to 30° in such a way that the medium to be tested comes into contact with the force sensor during tilting. The force in mN determined by the sensor represents a value comparable to the bending stiffness.

[0101] B) Drop weight test

[0102] The drop weight test is carried out by methods based on the falling ball test (eg DIN 52306, 52338) and the stone impact test (see DIN 20567-3). In this test, an object accelerated under gravity is dropped onto a test substrate and the resulting damage is evaluated.

[0103] The falling projectile is guided in the tube for precise impact area. Furthermore, the impactor has a defined impact area and impact profile, allowing the effect of point loads to be studied compared to area loads. Kinetic...

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Abstract

Self-adhesive edge protection tapes are used to improve the protection of glass edges. This is achieved by providing an adhesive tape comprising, in order towards the substrate to be coated, a backing layer (hard phase) and a soft phase comprising a polymer foam, a viscoelastic composition and / or an elastic A bulk composition, wherein the hard phase thickness is ≤ 150 μm, the soft phase thickness is ≥ 200 μm and the ratio of the soft phase thickness to the hard phase thickness is ≥ 4. The invention also relates to the use of a solar cell module and an adhesive tape as claimed in the invention for protecting the edges of a solar cell module comprising an adhesive tape according to the invention adhesively bonded around at least a part of its edge.

Description

technical field [0001] The invention relates to the technical field of adhesive tapes. In particular, the invention provides self-adhesive edge protection tapes which exhibit an improved protective effect for glass edges, in particular for solar cell modules. Background technique [0002] Electricity generation from sunlight using photovoltaic power generation systems is becoming more and more widespread. Conventional photovoltaic power generation systems usually contain multiple interconnected solar cell modules. These cell modules (which are also called photovoltaic modules, or PV modules for short) themselves contain interconnected solar cells in which the energy of sunlight is converted into electrical energy. Solar cells are based on silicon and are therefore often also referred to as silicon wafers. Thick-layer silicon cells are the most widespread, taking the form of monocrystalline (c-Si) or polycrystalline (mc-Si) cells. [0003] Alternative technologies are bec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/20H01L31/048C09J7/26
CPCB32B5/18C09J2203/322B32B7/12B32B27/065B32B27/304B32B27/32B32B27/36B32B27/40B32B2266/0221B32B2266/0242B32B2266/025B32B2405/00B32B2457/12H01L31/048Y02E10/50C09J7/381C09J7/26Y10T428/24967C09J7/29H01L31/0488
Inventor W.瓦特兹克W.克鲁格-帕莱塔A.斯坦
Owner TESA SE