efficient EVA packaging adhesive film with lamination time shortened, and preparation method and application thereof

A technology for encapsulating adhesive film and adhesive film, applied in the field of solar cells, can solve the problems of long lamination time and high production cost, and achieve the effect of reducing production cost, shortening lamination time, and unaffected reliability.

Active Publication Date: 2018-05-04
嘉兴优固应用材料有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it requires two laminations, and the lamination time is longer, and its production cost is still high

Method used

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  • efficient EVA packaging adhesive film with lamination time shortened, and preparation method and application thereof
  • efficient EVA packaging adhesive film with lamination time shortened, and preparation method and application thereof
  • efficient EVA packaging adhesive film with lamination time shortened, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Transparent EVA: in parts by mass, get 100 parts of VA (vinyl acetate) mass content and be 28% ethylene-vinyl acetate copolymer (Hanwha Total Corporation EVAE280PV) (the melt flow index (MI of described EVA resin) value) is 15g / 10min), add the components shown in the following table in terms of mass percentage of EVA resin:

[0051]

[0052] The mixture is blended and extruded in an extruder, and the temperature is controlled at 70°C. The extruded product is cast, cooled, cut, and coiled to obtain a transparent EVA film with a thickness of 0.50mm;

[0053] Then the transparent EVA film is irradiated by an electron beam accelerator to obtain a pre-crosslinked transparent EVA film. The radiation parameters are shown in the following table:

[0054]

Beam

Line speed

Transparent EVA

20mA

20m / min

[0055] Barrier EVA: in parts by mass, get 100 parts of VA (vinyl acetate) mass content as 28% ethylene-vinyl acetate copolymer (Hanwha Tota...

Embodiment 2

[0068] Transparent EVA: in parts by mass, get 100 parts of VA (vinyl acetate) mass content and be 28% ethylene-vinyl acetate copolymer (EVA E280PV of Hanwha Total Total Co., Ltd.) (the melt flow index of described EVA resin ( MI value) is 15g / 10min), adding the components shown in the following table in terms of mass percentage of EVA resin:

[0069]

[0070] The mixture is blended and extruded in an extruder, and the temperature is controlled at 80°C. The extruded product is cast, cooled, cut, and coiled to obtain an EVA film with a thickness of 0.50 mm.

[0071] Then the EVA film is irradiated by an electron beam accelerator to obtain a pre-crosslinked transparent EVA film. The radiation parameters are:

[0072]

Beam

Line speed

Transparent EVA

25mA

20m / min

[0073] Barrier EVA: in parts by mass, get 100 parts of VA (vinyl acetate) mass content as 28% ethylene-vinyl acetate copolymer (Hanwha Total Corporation EVA E280PV) (the melt flow...

Embodiment 3

[0086] Transparent EVA: in parts by mass, get 100 parts of VA (vinyl acetate) mass content as 28% ethylene-vinyl acetate copolymer (Hanwha Total Corporation EVAE282PV) (the melt flow index of the EVA resin (MI value) is 25g / 10min), add the components shown in the following table in terms of mass percentage of EVA resin:

[0087]

[0088] The mixture is blended and extruded in the extruder, the temperature is controlled at 90°C, and the extruded product is cast, cooled, cut, and coiled to obtain a transparent EVA film with a thickness of 0.80 mm;

[0089] Then the transparent EVA film is irradiated by an electron beam accelerator to obtain a pre-crosslinked transparent EVA film. The radiation parameters are shown in the following table:

[0090]

Beam

Line speed

Transparent EVA

20mA

20m / min

[0091] Barrier EVA: in parts by mass, get 100 parts of VA (vinyl acetate) mass content as 28% ethylene-vinyl acetate copolymer (Hanwha Total Corporati...

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Abstract

The invention provides an efficient EVA packaging adhesive film with the lamination time shortened, and a preparation method and application thereof. The preparation method of the EVA packaging adhesive film comprises the following steps of carrying out electron radiation on a transparent EVA adhesive film to obtain a pre-crosslinked transparent EVA adhesive film; carrying out electron radiation on a barrier EVA adhesive film to obtain a pre-crosslinked barrier EVA adhesive film; and carrying out lamination on the pre-crosslinked transparent EVA adhesive film and the pre-crosslinked barrier EVA adhesive film for 5 minutes to 10 minutes at the temperature of 140 DEG C to 150 DEG C to obtain the EVA packaging adhesive film. According to the efficient EVA packaging adhesive film with the lamination time shortened, and a preparation method and application thereof, under the conditions that no other additives are added, lamination is carried out after cross-linking is carried out on the transparent EVA adhesive film and the barrier EVA adhesive film through electron radiation, the time for lamination can be effectively shortened, reliability is not affected, apparent affects can be avoided, and the production cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to an EVA encapsulating adhesive film and its preparation method and application, in particular to a high-efficiency EVA encapsulating adhesive film shortening the lamination time, its preparation method and its application. Background technique [0002] With the reduction of photovoltaic subsidy policies year by year, the pressure on the production cost of modules is increasing. The current cost reduction plan of modules includes power increase, material cost price reduction, and lamination time shortening, etc. [0003] The cost-reducing solutions currently on the market mainly include the use of white EVA (ethylene-vinyl acetate copolymer) to increase the reflectivity of the back of the cell and increase the power of the module. However, it is difficult to improve the lamination yield of white EVA, mainly because of the appearance of wrinkles. Defects virtually increase product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/08B29C65/02B29C47/92B29L9/00B29K23/00B29C48/92
CPCB29C35/0866B29C48/92B29C65/02B29C2035/0877B29C2948/92704B29K2023/083B29L2009/00
Inventor 陈荣张圣博张定忠
Owner 嘉兴优固应用材料有限公司
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