CN102806748A - Method for preventing PVB (polyvinyl butyral) film from shrinking inwards during lamination packaging process - Google Patents
Method for preventing PVB (polyvinyl butyral) film from shrinking inwards during lamination packaging process Download PDFInfo
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- CN102806748A CN102806748A CN 201210281792 CN201210281792A CN102806748A CN 102806748 A CN102806748 A CN 102806748A CN 201210281792 CN201210281792 CN 201210281792 CN 201210281792 A CN201210281792 A CN 201210281792A CN 102806748 A CN102806748 A CN 102806748A
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Abstract
The invention relates to a method for preventing PVB (polyvinyl butyral) films from shrinking inwards during lamination packaging process. Interlayer products of intermediate packaging films are manufactured by placing the a PVB film made of thermoplastic high polymer material in a laminating device during lamination, and the lamination process includes a hot drawing step and a pressure heating step. In the hot drawing step, the PVB film is subjected to forvacuum for 10s to 30s prior to fast lamination treatment, pressure of the fast lamination treatment ranges from 0.1 to 4Mpa, temperature of the fast lamination treatment ranges from 60 to 120 DEG C, and the pressurizing time lasts 1-30s. The method for preventing PVB films from shrinking inwards during the lamination packaging process has the advantage that in a heating vacuum-pumping step during the lamination process, chemical bond among the PVB film, the front plate and the rear plate of the product can be initially formed by applying a small stress quickly after a short forvacuum, initial bonding effect between the PVB film and a base plate can be formed, the thermoplastic PVB film can be prevented from shrinking into the front plate and the rear plate during the continuous heating vacuumizing process, the laminating process of the PVB film is optimized, quality of intermediate film product is improved, and excellent product rate is increased.
Description
Technical field
PVB film layers press seal packing technique of the present invention field, the method that contracts in relating in a kind of PVB of preventing film layers press seal process of assembling.
Background technology
Polyvinyl butyral resin is called for short PVB, and the PVB resin itself contains a lot of hydroxyls, can produce the reaction of building bridge to promote performances such as chemical proofing and hardness of film with some thermosetting resins.And have excellence film high transparent, elasticity, toughness, anti-highly basic, oil resistivity, pliability and a low temperature resistance to impact.Because it has the particular chemical structure, so glass, metal, pottery, plastics and leather etc. are had very strong associativity.
The PVB film is to be pushed and a kind of high molecular film material of moulding through plasticizer DHA plasticizing by polyvinyl butyral resin; With lucite special caking property and light transmission are arranged to inorganic; Main sandwich material as production safety glass is such as the intermediate coat of automobile and building gummed safety glass.In addition, the PVB film still is a kind of main flow material of solar cell package, uses glass, PVB film, glass other back veneer materials such as (or) polymer to utilize the vacuum lamination way that battery is encapsulated.
Usually the technical process of PVB intermediate coat production folder glass goods is the cleaning base plate material; The PVB film is laid in the middle of the upper and lower base plate material; Get into heating vacuumizing and exhausting and precompressed in the laminating machine after closing sheet; Through vacuumizing the air in the intermediate coat interface is discharged, heating and the air bag applied pressure through the upper strata tentatively bond, and guarantee that the PVB film tentatively has certain cohesive force.Hot-forming then, through assembly is continued heating, pressure process, abundant fusion of encapsulating material and pronotum are fully bonded together, goods are taken out in cooling at last.
The PVB film is that thermoplastic macromolecule material has very strong heat-shrinkable; Heating vacuumizing and exhausting during the stage; Owing to just begin to vacuumize but do not exert pressure; The PVB film also produces cohesive force with upper and lower base plate, causes the PVB film to be retracted to front-back baseboard inside so be heated contraction easily, contracts in being commonly called as.In the lamination encapsulation process, contracting in the PVB film is one of modal quality problems.It also is technical barrier of every profession and trade PVB intermediate coat goods potting process.Contract in the corner of goods behind the lamination, not only influenced the outward appearance of goods, Problem of Failure appears in the reliability that makes steam intrusion product inside cause encapsulating under the serious situation easily.Usually, in the goods article treating method that contracts be the degree that contracts according in the PVB film, the interior product that contracts slight is reduced product hierarchy, in the serious product that contracts scrap processing.The problem that contracts in the PVB film greatly influences the packaging process qualification rate, has increased the quality cost of producing.
Summary of the invention
The method that contracts in the purpose of this invention is to provide in a kind of PVB of preventing film layers press seal process of assembling.Through optimizing the lamination technical process in heating vacuumizing and exhausting stage, avoid contracting in the PVB film in the lamination process, improve the acceptance rate of lamination, improve the outward appearance of goods, increase economic efficiency.
The method that contracts in a kind of PVB of preventing film layers of the present invention press seal process of assembling places laminating apparatus to process the layered product of intermediate package film through lamination process on thermoplastic macromolecule material PVB film.Lamination process comprise heat take out the stage with exert pressure the heating period.After heat is taken out stage forvacuum 10～30s, carry out quick pressurized treatments, the pressure of pressurized treatments is 0.1～4Mpa fast, and the temperature of pressurized treatments is all 60～120 ℃ mutually with the temperature of taking out the hot stage fast, and be 1～30s pressing time.
The PVB film is the polyvinyl butyral film material, and the polyvinyl butyral film material comprises transparent or white polyethylene butyral material, or polyvinyl butyral resin derivative thermoplastic.
Laminating apparatus is one section or syllogic laminating machine.
The PVB film is solar photovoltaic battery component and automobile, laminated safety glass for building as the layered product of intermediate package film.Solar photovoltaic assembly is crystal silicon solar battery component and Thinfilm solar cell assembly.Wherein, crystal silicon solar battery component comprises monocrystalline silicon and polycrystalline solar module.Thinfilm solar cell assembly comprises amorphous silicon solar cell module; Non-crystalline silicon-amorphous silicon laminated solar cell assembly; Non-crystalline silicon-amorphous germanium lamination solar cell assembly; Non-crystalline silicon-amorphous germanium-amorphous germanium lamination solar cell assembly; Non-crystalline silicon-crystalline/micro-crystalline silicon laminated solar module; Non-crystalline silicon-microcrystal silicon-crystalline/micro-crystalline silicon laminated solar module; The cadmium sulfide solar cell assembly; The cadmium telluride solar module; The CIS solar module; Copper indium gallium tin solar module; Polymer solar battery assembly and dye-sensitized film solar module.
Good effect of the present invention is the heating, vacuum exhaust phase at lamination process; Through applying a little pressure fast, make the header board of PVB film and goods, backboard primary action form chemical bond after the of short duration forvacuum, make the cementation that the initial stage is arranged between PVB film and the substrate; Prevent in continuing the heating vacuum thermoplasticity glued membrane be contracted to preceding, backboard is inner; Optimize the lamination process of PVB film, improve the intermediate coat Products Quality, improve the acceptance rate of goods.The procedure that the present invention contracts in preventing in the PVB film layers press seal process of assembling is simple, the time is short, speed is fast, need not increase equipment and investment, contracts in effectively preventing in lamination heating vacuum, to produce, and satisfies the product appearance requirement.
Description of drawings
Fig. 1 is the process curve figure of PVB film lamination process of the present invention;
Fig. 2 is the process curve figure of prior art PVB film lamination process.
Wherein: 1-fast pressurized treatments, 2-heat is taken out the stage, 3-is exerted pressure the heating period.
Describe the present invention below in conjunction with accompanying drawing and embodiment.
Embodiment 1
Amorphous silicon membrane battery component PVB film lamination process places laminating machine to carry out lamination on the PVB film, and lamination process comprises that heat takes out stage 2 and exert pressure the heating period 3.As shown in Figure 1, heat is taken out the stage forvacuum 15s of elder generation, and assembly is carried out quick pressurized treatments 1.The pressure 2MPa of quick pressurized treatments, duration 15s, the temperature of pressurized treatments process is taken out the temperature in stage with heat and is all 100 ℃ mutually.Stop pressurization then and proceed heat and take out the stage and exert pressure the heating period, accomplish lamination process and process product.The phenomenon that contracts in the examination and test of products does not have occurs.
PVB film in the present embodiment is replaced with polyvinyl butyral resin derivative thermoplasticity encapsulating material, under the constant situation of process conditions, contract in can be used for preventing solar components the PVB film producing in lamination process.
Embodiment 2
Amorphous/crystallite overlapping thin film solar battery assembly PVB film lamination process; After vacuumizing 15s; Assembly applies 4MPa pressure 1s, makes common float glass header board, the half tempered glass back plate primary action of PVB glued membrane and assembly and forms chemical bond, makes the cementation that the initial stage is arranged between them; Thereby prevent in continuing heating process the PVB glued membrane be contracted to preceding, backboard is inner, accomplish and handle.Stop pressurization then and proceed heat and take out the stage and exert pressure the heating period, accomplish hot pressing and process product.The phenomenon that contracts in the examination and test of products does not have occurs.
Embodiment 3
At amorphous silicon membrane battery component PVB film lamination process, vacuumize 20s after, to the assembly 0.5MPa that exerts pressure, continue 30s, stop pressurization then and proceed heat and take out the stage and exert pressure the heating period, accomplish lamination process and process product.The phenomenon that contracts in the examination and test of products does not have occurs.
Embodiment 4
At non-crystal silicon thin-film solar cell component PVB film lamination process, vacuumize 10s after, to the assembly 1.5MPa that exerts pressure, duration 20s stops pressurization then and proceeds heat and take out the stage and exert pressure the heating period, accomplishes lamination process and processes product.The phenomenon that contracts in the examination and test of products does not have occurs.
Embodiment 5
At the lamination process that the sandwich boards for construction safety glass is produced, vacuumize 15s earlier after, to assembly 0.5 MPa that exerts pressure, duration 30s stops pressurization then and proceeds heat and take out the stage and exert pressure the heating period, accomplishes lamination process and processes product.The phenomenon that contracts in the examination and test of products does not have occurs.
Embodiment 6
At amorphous silicon membrane battery component PVB film lamination process, vacuumize 18s earlier after, to the assembly 3 M Pa that exert pressure, duration 12s stops pressurization then and proceeds heat and take out the stage and exert pressure the heating period, accomplishes lamination process and processes product.The phenomenon that contracts in the examination and test of products does not have occurs.
Claims (7)
1. method that contracts in preventing in the PVB film layers press seal process of assembling; Place laminating apparatus to process the layered product of intermediate package film through lamination process on thermoplastic macromolecule material PVB film; Said lamination process comprises that heat is taken out the stage (2) and exert pressure the heating period (3); It is characterized in that: after heat is taken out stage forvacuum 10～30s, carry out quick pressurized treatments (1), the pressure of pressurized treatments is 0.1～4Mpa fast, and the temperature of pressurized treatments is identical with the temperature of taking out the hot stage fast; Be 60～120 ℃, be 1～30s pressing time.
2. the method that contracts in the PVB of the preventing film layers press seal process of assembling according to claim 1; It is characterized in that: said PVB film is the polyvinyl butyral film material; Said polyvinyl butyral film material comprises transparent or white polyethylene butyral material, or polyvinyl butyral resin derivative thermoplastic.
3. the method that contracts in the PVB of the preventing film layers press seal process of assembling according to claim 1 is characterized in that: said laminating apparatus is one section or syllogic laminating machine.
4. the method that contracts in the PVB of the preventing film layers press seal process of assembling according to claim 1 is characterized in that: the layered product of said intermediate package film is solar photovoltaic battery component and automobile, laminated safety glass for building.
5. the method that contracts in a kind of PVB of preventing film layers press seal process of assembling according to claim 4, it is characterized in that: described solar photovoltaic assembly is crystal silicon solar battery component and Thinfilm solar cell assembly.
6. the method that contracts in the PVB of the preventing film layers press seal process of assembling according to claim 5, it is characterized in that: said crystal silicon solar battery component comprises monocrystalline silicon and polycrystalline solar module.
7. the method that contracts in the PVB of the preventing film layers press seal process of assembling according to claim 5 is characterized in that: said Thinfilm solar cell assembly comprises amorphous silicon solar cell module, non-crystalline silicon-amorphous silicon laminated solar cell assembly, non-crystalline silicon-amorphous germanium lamination solar cell assembly, non-crystalline silicon-amorphous germanium-amorphous germanium lamination solar cell assembly, non-crystalline silicon-crystalline/micro-crystalline silicon laminated solar module, non-crystalline silicon-microcrystal silicon-crystalline/micro-crystalline silicon laminated solar module, cadmium sulfide solar cell assembly, cadmium telluride solar module, CIS solar module, copper indium gallium tin solar module, polymer solar battery assembly and dye-sensitized film solar module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210281792 CN102806748A (en) | 2012-08-09 | 2012-08-09 | Method for preventing PVB (polyvinyl butyral) film from shrinking inwards during lamination packaging process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210281792 CN102806748A (en) | 2012-08-09 | 2012-08-09 | Method for preventing PVB (polyvinyl butyral) film from shrinking inwards during lamination packaging process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987581A (en) * | 2018-07-25 | 2018-12-11 | 中节能万润股份有限公司 | A kind of automatically cleaning perovskite solar battery and preparation method thereof |
| CN110696471A (en) * | 2018-06-22 | 2020-01-17 | 东泰高科装备科技（北京）有限公司 | Solar module laminating method |
-
2012
- 2012-08-09 CN CN 201210281792 patent/CN102806748A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696471A (en) * | 2018-06-22 | 2020-01-17 | 东泰高科装备科技（北京）有限公司 | Solar module laminating method |
| CN110696471B (en) * | 2018-06-22 | 2023-05-26 | 紫石能源有限公司 | Lamination method of solar module |
| CN108987581A (en) * | 2018-07-25 | 2018-12-11 | 中节能万润股份有限公司 | A kind of automatically cleaning perovskite solar battery and preparation method thereof |
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Application publication date: 20121205 |