CN108859353B - Preparation method of PE composite film and solar backboard comprising PE composite film - Google Patents
Preparation method of PE composite film and solar backboard comprising PE composite film Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/32—Making multilayered or multicoloured articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/12—Photovoltaic modules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention discloses a preparation method of a PE composite film, which comprises the steps of S1, mixing L DPE and LL DPE in a ratio of 1: 1-1: 3, preparing a surface PE film through co-extrusion casting or co-extrusion film blowing, mixing L DPE and LL DPE in a ratio of 1: 1-1: 3, mixing ultraviolet-resistant master batches and white master batches in L DPE and LL DPE, preparing a core PE film through co-extrusion casting or co-extrusion film blowing, mixing L DPE and LL DPE in a ratio of 1: 1-1: 3, mixing ultraviolet-resistant master batches and white master batches with L DPE and LL DPE, preparing an EVA resin through co-extrusion casting or co-extrusion film blowing, and preparing a heat-sealing layer PE film through a three-layer co-extrusion casting or film blowing manner, wherein the prepared PE composite film has larger improvement on the aspects of strength, easy peeling degree, heat-sealing strength, tensile strength and anti-ultraviolet aging performance compared with an ordinary PE film with the same thickness.
Description
Technical Field
The invention belongs to the technical field of solar cell back plates, and particularly relates to a preparation method of a PE (polyethylene) composite film in a solar back plate and the solar back plate comprising the PE composite film.
Background
With the increasingly poor traditional energy, the development and utilization of novel energy in the world become more and more the focus of world attention, and solar energy has the characteristics of inexhaustibility, no pollution and no public nuisance as the novel energy, and is attracted global attention. The solar cell module is a laminated structure, and a cell module main body structure is composed of a panel, glue, cell pieces, the glue and a back plate, wherein the back plate is the most important material except the cell pieces in the solar cell module, and the back plate is an encapsulating material which is in direct large-area contact with the external environment in the module and plays a role in supporting and protecting the cell pieces in the module.
The currently more common structures are TPT and TPE structures, where T refers to Tedlar film from dupont, P refers to polyethylene terephthalate (PET) film, and E refers to polyethylene film. In the TPT structure, the back plate is bonded with the solar cell sheet by an EVA adhesive film, in the back plate, unmodified fluororesin and PET have poor bonding fastness with EVA, so that the contact surface of the back plate and the cell sheet needs to be provided with bonding layer materials, at present, a common solar cell back plate usually uses a polyolefin polymer layer as a bonding layer, and the bonding layer has the following defects: on one hand, the front side of the solar cell is irradiated by sunlight for a long time, so that the solar cell is easy to yellow or even chap due to ultraviolet aging, the conversion efficiency of the solar cell is reduced, and the service life of the solar cell is influenced; on the other hand, the back plate belongs to a flammable polymer material, so that the back plate has poor flame retardance, is easy to burn under long-term high-temperature working conditions and high-temperature environment conditions, and has potential safety hazards. The single surface of the TPE structure is provided with the fluorine-containing film, so that the price is greatly advantageous, and the laminating bonding strength of the PE film and the EVA is high, so that the TPE structure and the EVA can not fall off in the using process to influence the service life of the battery. However, the module is inevitably damaged in the process of processing the solar cell, the PE and the EVA are required to be separated and processed again, the bonding strength of the PE and the EVA is high, and the PE and the EVA are difficult to separate without influencing the integrity of the PE and the PET.
Chinese patent document CN 103642416a discloses a PE composite film easy for solar back panel to be repeatedly processed, which is prepared by blowing or casting, and consists of an adhesive layer PE adhered by an adhesive, an intermediate layer PE blended with an inorganic filler, and a laminated layer PE laminated and adhered with EVA; however, the lubricant is added between the different PE layers, so that the PE and the EVA are easily separated, the composite peel strength is affected, the tensile strength and the tensile rate of the PE film are reduced, and the production cost is increased.
Therefore, there is a need in the art to provide a PE composite film with high composite peel strength, easy processing, and resistance to uv aging, a method for preparing the same, and a solar back sheet comprising the same.
Disclosure of Invention
In order to overcome the defects, the invention provides a preparation method of a PE composite film which is high in composite peel strength, easy to process and resistant to ultraviolet aging, and a solar back panel comprising the film.
In order to achieve the above purpose, one of the purposes of the present invention is to provide a preparation method of a PE composite film, which specifically adopts the following technical scheme:
the PE composite film sequentially comprises a surface layer PE film, a core layer PE film and a heat sealing layer PE film; adding ultraviolet-resistant master batches and white master batches into the core layer PE film, and adding ultraviolet-resistant master batches, white master batches and EVA resin into the heat-seal layer PE film;
the base material of the PE composite film consists of L DPE and LL DPE, wherein the proportions of L DPE and LL DPE in the surface layer PE film, the core layer PE film and the heat sealing layer PE film are all within the range of 1: 1-1: 3;
the LL DPE has the brand number of 1002YB, &lTtT translation = L "&gTt L &lTt/T &gTt DPE has the brand number of Yangba 2420H;
the ultraviolet resistant master batch is UV32 type master batch which takes L DPE with MFI of 7 as a carrier and contains a composite hindered amine light stabilizer, wherein the content of the composite hindered amine light stabilizer in the ultraviolet resistant master batch, namely the UV32 type master batch, is 18.0-22.0 wt%;
the thickness of the PE composite film is 50-200 mu m, wherein the adding amount of the ultraviolet resistant master batch UV32 in the core layer PE film accounts for 2.2-2.5 wt% of the total weight of the PE composite film, and the adding amount of the ultraviolet resistant master batch UV32 in the heat-seal layer PE film accounts for 0.7-1.2 wt% of the total weight of the PE composite film;
the white masterbatch is 7M 2005E; wherein the addition amount of the core layer PE film white master 7M2005E accounts for 8.4-9.4 wt% of the total weight of the PE composite film, and the addition amount of the heat seal layer PE film white master 7M2005E accounts for 1.4-2.1 wt% of the total weight of the PE composite film;
the EVA resin is EVA53009 type, wherein the addition amount of the EVA53009 in the PE film of the heat-sealing layer accounts for 7-8 wt% of the total weight of the PE composite film;
the PE composite film comprises the following preparation steps:
s1, mixing L DPE and LL DPE in a ratio of 1: 1-1: 3 to obtain a surface PE film raw material;
l DPE and LL DPE are mixed according to the ratio of 1: 1-1: 3, and uvioresistant master batch and white master batch are mixed into L DPE and LL DPE to prepare the core layer PE film raw material;
l DPE and LL DPE are mixed according to the ratio of 1: 1-1: 3, and uvioresistant master batches, white master batches and EVA resin are mixed into L DPE and LL DPE to prepare the PE film raw material of the heat sealing layer;
s2, preparing the PE composite film in a three-layer co-extrusion casting or film blowing mode.
The invention also aims to provide a solar back panel comprising the PE composite film, which sequentially comprises a fluororesin layer, a first bonding layer, a PET layer, a second bonding layer and a laminated bonding layer, wherein the laminated bonding layer adopts the PE composite film.
The invention has the beneficial effects that:
1) the invention selects L DPE and LL DPE materials as the base materials of the PE composite film, and ensures that the film has good tensile breaking performance and certain processing performance, wherein L DPE and 5630 DPE particles in the PE film on the surface layer do not need to be added with any slipping agent and opening agent, and do not need to be added with any slipping agent and opening agent additionally, thereby reducing the precipitation of small molecular substances, reducing the influence on the composite peeling strength, and ensuring the stability of the surface layer applied to a solar backboard to be compounded with other materials.
2) The carrier selection of the uvioresistant master batches and the white master batches in the core layer PE film has good compatibility with L DPE and LL DPE, the situation of no bad plasticization is ensured, and the addition range of UV32 as the uvioresistant master batches is controlled to be 2.9-3.7 wt% of the total weight of the PE composite film according to the thickness and the intensity of light irradiation of the composite PE film, so that the use of the film can be effectively protected, a good ultraviolet protection effect is achieved, the tensile strength and the elongation of the film cannot be influenced, and the color of the film cannot be influenced.
3) The EVA resin is selected as the main raw material of the heat sealing layer, the EVA resin has low-temperature adhesive property required by high-speed automatic filling and packaging, has good adhesive property with PP, HIPS and PSP containers, is easy to peel and strip, and the like, a certain amount of white mother is added into the heat sealing layer, so that the whiteness of the film can be improved, the white mother is simultaneously dispersed in the core layer and the heat sealing layer, and the probability of generating crystal points can be reduced, and the service life and the replaceability of the film can be improved by utilizing the dispersion and the melting of the mother and the raw materials. The two-layer addition of the color master reduces the use proportion of the color master and reduces the probability of crystal point generation under the condition of ensuring certain sunlight reflection.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Composite PE film
A PE composite film comprises a surface layer PE film, a core layer PE film and a heat sealing layer PE film in sequence; and the heat-seal layer PE film is added with the uvioresistant master batches, the white master batches and EVA resin.
The PE composite film comprises a PE composite film body and a PE layer, wherein the PE composite film body is composed of L DPE and LL DPE, the proportion of L DPE to LL DPE in the PE film body of the surface layer, the PE film body of the core layer and the PE film body of the heat sealing layer is in the range of 1: 1-1: 3, L DPE and LL DPE can ensure specific blending proportion according to different composite modes and composite materials, if extrusion compounding is conducted, the blending proportion of L DPE to LL DPE is 1:1, the melting temperature of the surface layer is low, and the extrusion compounding fastness is convenient.
The LL DPE is of a mark of 1002YB (Exxon), the series of butene linear low-density polyethylene has high gloss and excellent drafting performance, and the prepared film has excellent stretching performance and toughness, and the L DPE is of a mark of Yangba 2420H, and the series of low-density polyethylene has good processing performance, good processing performance and strong toughness.
The ultraviolet-resistant master batch adopts L DPE with MFI of 7 as a carrier and UV32 type master batch containing a composite hindered amine light stabilizer (a manufacturer is France Baolide company), the light stabilizer in the UV32 type master batch has low volatility, can be widely used in blown films and cast films with various thicknesses, has a good ultraviolet protection effect, does not influence the tensile strength and elongation of the films, does not influence the color of the films, and has the content of the light stabilizer in the UV32 type master batch of 18.0-22.0 wt%.
The thickness of the PE composite film is 50-200 mu m, wherein the proportion of the addition amount of ultraviolet resistant master batches, namely UV32 type master batches, in the PE film of the core layer to the total weight of the PE composite film is 2.2-2.5 wt%, the proportion of the addition amount of ultraviolet resistant master batches UV32 in the PE film of the heat sealing layer to the total weight of the PE composite film is 0.7-1.2 wt%, concretely, the following table 1 shows a stable sunshine value, namely a thousand-ring-per-year (K L y) value (50% of mechanical property residue), corresponding to the addition amount of UV32 (proportion to the total weight of the PE composite film) in different film thicknesses, and the addition amount of UV32 can be adjusted according to the thickness of the film and the intensity of light irradiation.
TABLE 1 sunlight stability values for different film thicknesses with UV32 addition
Remarks 140K L y-1 year florida 190K L y-1 year arizona
The white masterbatch is 7M2005E (Shanghai gold masterbatches Co., Ltd.) and has good compatibility with L DPE and LL DPE, wherein the proportion of the addition amount of the white masterbatch 7M2005E in the PE film of the core layer to the total weight of the PE composite film is 8.4-9.4 wt%, the proportion of the addition amount of the white masterbatch 7M2005E in the PE film of the heat sealing layer to the total weight of the PE composite film is 1.4-2.1 wt%, and the use proportion of the masterbatch is reduced and the probability of generation of crystal points is reduced under the condition of ensuring certain sunlight reflection by adding the two layers of masterbatches, so that the situation of no poor plasticization is ensured.
The adding amount of the EVA53009 in the PE film of the heat sealing layer accounts for 7-8 wt% of the total weight of the PE composite film, EVA resin is selected as a main raw material of the heat sealing layer, the EVA resin is of an EVA53009 type, and the EVA resin has low-temperature adhesive performance required by high-speed automatic filling and packaging, good adhesive performance with PP, HIPS and PSP containers, easy peeling and the like.
Specifically, the physical properties of the EVA resin film are shown in table 2 below.
TABLE 2 physical Properties of EVA resin film
Preparation method of PE composite film
A method for preparing a PE composite film as described in example 1, comprising the steps of,
s1, mixing L DPE and LL DPE in a ratio of 1: 1-1: 3 to obtain a surface PE film raw material;
l DPE and LL DPE are mixed according to the ratio of 1: 1-1: 3, and uvioresistant master batch and white master batch are mixed into L DPE and LL DPE to prepare the core layer PE film raw material;
l DPE and LL DPE are mixed according to the ratio of 1: 1-1: 3, and uvioresistant master batches, white master batches and EVA resin are mixed into L DPE and LL DPE to prepare the PE film raw material of the heat sealing layer;
s2, preparing the PE composite film in a three-layer co-extrusion casting or film blowing mode.
As shown in Table 3, the PE composite film prepared by the invention has performance test data.
TABLE 3 Performance test data of the PE composite film of this example
According to the data shown in the table 3, the tensile strength, the easy peeling degree, the heat sealing strength and the ageing resistance of the PE composite film prepared by the invention are greatly improved compared with those of the common PE film with the same thickness.
3. Solar backboard comprising PE composite film
The solar backboard comprises the PE composite film, and sequentially comprises a fluorine resin layer, a first bonding layer, a PET layer, a second bonding layer and a laminated bonding layer, wherein the laminated bonding layer is the PE composite film.
Claims (2)
1. A preparation method of a PE composite film is characterized by comprising the following steps:
the PE composite film sequentially comprises a surface layer PE film, a core layer PE film and a heat sealing layer PE film; adding ultraviolet-resistant master batches and white master batches into the core layer PE film, and adding ultraviolet-resistant master batches, white master batches and EVA resin into the heat-seal layer PE film;
the base material of the PE composite film consists of L DPE and LL DPE, wherein the proportions of L DPE and LL DPE in the surface layer PE film, the core layer PE film and the heat sealing layer PE film are all within the range of 1: 1-1: 3;
the LL DPE has the brand number of 1002YB, &lTtT translation = L "&gTt L &lTt/T &gTt DPE has the brand number of Yangba 2420H;
the ultraviolet resistant master batch is UV32 type master batch which takes L DPE with MFI of 7 as a carrier and contains a composite hindered amine light stabilizer, wherein the content of the composite hindered amine light stabilizer in the ultraviolet resistant master batch, namely the UV32 type master batch, is 18.0-22.0 wt%;
the thickness of the PE composite film is 50-200 mu m, wherein the adding amount of the ultraviolet resistant master batch UV32 in the core layer PE film accounts for 2.2-2.5 wt% of the total weight of the PE composite film, and the adding amount of the ultraviolet resistant master batch UV32 in the heat-seal layer PE film accounts for 0.7-1.2 wt% of the total weight of the PE composite film;
the white masterbatch is 7M 2005E; wherein the addition amount of the core layer PE film white master 7M2005E accounts for 8.4-9.4 wt% of the total weight of the PE composite film, and the addition amount of the heat seal layer PE film white master 7M2005E accounts for 1.4-2.1 wt% of the total weight of the PE composite film;
the EVA resin is EVA53009 type, wherein the addition amount of the EVA53009 in the PE film of the heat-sealing layer accounts for 7-8 wt% of the total weight of the PE composite film;
the PE composite film comprises the following preparation steps:
s1, mixing L DPE and LL DPE in a ratio of 1: 1-1: 3 to obtain a surface PE film raw material;
l DPE and LL DPE are mixed according to the ratio of 1: 1-1: 3, and uvioresistant master batch and white master batch are mixed into L DPE and LL DPE to prepare the core layer PE film raw material;
l DPE and LL DPE are mixed according to the ratio of 1: 1-1: 3, and uvioresistant master batches, white master batches and EVA resin are mixed into L DPE and LL DPE to prepare the PE film raw material of the heat sealing layer;
s2, preparing the PE composite film in a three-layer co-extrusion casting or film blowing mode.
2. A solar back sheet comprising a PE composite film obtained by the method for producing a PE composite film according to claim 1, wherein: the back plate sequentially comprises a fluorine resin layer, a first bonding layer, a PET layer, a second bonding layer and a laminated bonding layer, wherein the laminated bonding layer is the PE composite film.
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| CN201510908424.2A CN105538846B (en) | 2015-12-07 | 2015-12-07 | A kind of PE laminated films and preparation method thereof and the solar energy backboard comprising the film |
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| CN107554019A (en) * | 2017-08-22 | 2018-01-09 | 嘉兴市高正高分子材料有限公司 | It is a kind of it is three-layer co-extruded go out polyethylene film and preparation method thereof |
| CN108263061B (en) * | 2018-02-05 | 2019-11-29 | 高源� | A kind of degradable green package film of high-barrier and preparation method thereof |
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| CN111421935B (en) * | 2020-05-07 | 2022-03-22 | 上海紫江彩印包装有限公司 | Infrared reflection polyolefin film and preparation method and application thereof |
| CN114437646A (en) * | 2022-01-24 | 2022-05-06 | 浙江华清包装材料有限公司 | PE hot-sticking film for metal plate |
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| CN102983193A (en) * | 2012-11-26 | 2013-03-20 | 山东东岳高分子材料有限公司 | High-cohesiveness solar battery rear panel film and production method thereof |
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| JP2015134502A (en) * | 2015-03-09 | 2015-07-27 | 東レフィルム加工株式会社 | polyolefin resin multilayer film |
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| WO2011118353A1 (en) * | 2010-03-23 | 2011-09-29 | 東洋アルミニウム株式会社 | Solar-cell backside protection sheet and solar-cell module provided with same |
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| CN102983193A (en) * | 2012-11-26 | 2013-03-20 | 山东东岳高分子材料有限公司 | High-cohesiveness solar battery rear panel film and production method thereof |
| CN103642416A (en) * | 2013-12-04 | 2014-03-19 | 常州回天新材料有限公司 | PE (polyethylene) composite film prone to be used for repeat processing of solar backboard |
| JP2015134502A (en) * | 2015-03-09 | 2015-07-27 | 東レフィルム加工株式会社 | polyolefin resin multilayer film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108859353A (en) | 2018-11-23 |
| CN105538846B (en) | 2018-07-06 |
| CN105538846A (en) | 2016-05-04 |
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