CN201845800U - Manufacturing device for backboard of solar battery pack - Google Patents

Abstract

The utility model discloses a manufacturing device for a backboard of a solar battery pack. The manufacturing device comprises an unwinding device, a preprocessing device, a coating device, a multi-stage thermal circulation drying system, a cooling system and a winding device that are connected with one another in sequence. A base film used for manufacturing the backboard of the solar battery pack is transmitted through the devices in sequence, thereby undergoing the processing of unwinding, purifying and static electricity removing, coating, drying, cooling and winding in the devices in sequence, so as to form the backboard of the solar battery pack. The multi-stage thermal circulation drying system further comprises the structures: a group of drying ovens, a thermal circulation device and a group of pipelines, wherein the drying ovens are in series connection with one another to form a sectional multi-stage drying device and are communicated with the thermal circulation device respectively through pipelines corresponding to the drying ovens, wherein the thermal circulation device collects, burns and processes the waste gas generated in the drying ovens during drying process and uses the burning heat of the waste gas to supply heat for each drying oven.

Description

The manufacturing installation of solar battery group backboard

Technical field

The utility model relates to a kind of manufacturing installation of solar battery group backboard, particularly a kind of manufacturing installation of solar battery group backboard of energy-conserving and environment-protective.

Background technology

Along with the quickening of process of industrialization, energy resource consumption is increasing, and the finiteness that conventional energy resource is supplied with and the increase of environmental protection pressure impel the mankind to remove the development and utilization new forms of energy.Cause the attention in the world as the solar energy of one of new forms of energy.Industrialized country drops into huge fund one after another and researches and develops utilization, and attempt keeps it at leading position on the solar energy industry and the ascendancy on market.

Along with the proposition of low-carbon economy target, as the most potential energy of 21 century, the development potentiality of photovoltaic industry is huge.Along with growing continuously and fast of photovoltaic industry, the demand of its auxiliary products also increases day by day.The raw material of solar module production are polysilicon, cell package backboard, EVA glued membrane, face glass, electrode interconnecting strip, scolding tin and scaling powder etc.At present, the solar module raw material are not except that backboard also domesticizes, and other products are all realized production domesticization.Occupy an leading position with the import backboard in market at home, cost an arm and a leg, and all the other materials all need not import, adopts the production domesticization material significantly to reduce cost.Along with growing continuously and fast of photovoltaic industry, the demand and the production domesticization of its auxiliary products backboard are brought into schedule.Therefore, the special-purpose backboard production domesticization of solar module production is very necessary.

Existing import backboard is mainly based on the film composite construction, and wherein the Tedlar PVF film with Du Pont is main supplier, and two-sided compound PFT forms backboard by binding agent.The supply of material of TPT is subjected to the production capacity restriction of DUPONT company to a great extent, and the supply of material is not very stable, and on the high side.And because use binding agent compound, very high to the weatherability requirement of binding agent, delamination appears easily.

As adopting coating processes, three layers of no plastic structure of original creation have obviously reduced the backboard layering.The surface filming densification has overcome the drawback of the easy layering bubbling of conventional adhesive composite membrane, has reduced the transmitance of basement membrane steam, has improved its weatherability.The fluorine rete is through special processing, and any one side all can realize that perfection is bonding with any a qualified EAV glue, and with EVA very high peel strength is arranged, and greatly reduces the probability of happening that the assembly backboard bubbles.Concrete technology be with high-weatherability can the fluorine material, the PET film by coating processes and high barrier, high mechanical properties is combined into solar module special use backboard.

This material has ageing-resistant, corrosion-resistant, the performance such as resistant is hydrophobic of fluoroplastics high-quality and the mechanical strength of PET polyester film excellence, and it can prevent the erosion to silicon chip of solar cell such as other medium such as water, oxygen, corrosive gas, liquid (as acid rain) effectively.The weatherability of backboard, electric insulating quality, barrier, cementability satisfy the instructions for use of solar module fully.

In the conventional art, above-mentioned solar cell module back veneer adopts the PET film more, the disposable productions of finishing backboard of step such as mistake unreels, preliminary treatment, coating, oven dry, side cut, arrangement, rolling.Yet because problems such as the coating that is adopted in the coating procedure of PET film, solvent, additive, described PET film can discharge a large amount of organic gass in follow-up drying course, these organic gass contain harmful and noxious substance, as direct discharging, then can cause serious pollution to atmosphere.Conventional art has, the exhaust collection modes that adopt collect above-mentioned organic gas and handle more, yet this method needs higher cost and extra device to come the above-mentioned waste gas of collection and treatment, and also can face leakage and secondary pollution problems in collection and processing procedure.

Simultaneously, in the process of processed PET film, the tension force of PET film must strict control, otherwise fold can appear, monolateral degree of tightness is situations such as stretcher strain.In the existing manufacture method, the tension force of PET film is monitored according to a single standard, and corresponding many are adopted a single tension monitor that the tension force of PET film is monitored before coating.So adopting the PET film of conventional art manufacturing fold, monolateral degree of tightness to occur is that the probability of situation such as stretcher strain is bigger.Formally be subjected to the restriction of above-mentioned situation, adopt conventional art, can only make the backboard of little wide cut, and can't make big wide cut backboard, particularly wide cut reaches the super large wide cut backboard of 2m.Simultaneously, it is low higher with production cost that these situations have also caused the rate of finished products of conventional art manufacturing solar energy backboard.

Summary of the invention

One of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, and it carries out preliminary treatment, coating, oven dry, cooling to basement membrane successively, to make solar cell backboard.

Two of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, and it has multistage baking oven, and the multistage oven dry that the basement membrane after applying is had temperature gradient is to avoid problems such as shock heating oven dry inequality of bringing and face checking.

Three of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, and it has thermocirculator, the waste gas that produces in the drying course is carried out catalytic combustion handle, to avoid environmental pollution.

Four of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, and it has thermocirculator, utilizes the combustion heat of the waste gas of oven dry generation to carry out heat exchange, with the heating, drying required air, for baking oven provides temperature required.

Five of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, it has thermocirculator, utilize the combustion heat of the waste gas of oven dry generation to carry out heat exchange, waste gas with the heating, drying generation, it is temperature required to make it reach catalytic combustion, thereby makes just spontaneous combustion when exhaust gas concentration reaches predetermined value.

Six of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, it has multistage thermal cycle drying system, its waste gas that utilizes oven dry to produce carries out catalytic combustion, and the combustion heat carried out dual heat exchange, with heating, drying required air and pending waste gas, for baking oven provides temperature required and make waste gas reach catalytic combustion temperature required, thereby make described oven dry need not extraneous heat supply, operation automatically, realize energy-conservation purpose.

Six of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, it has multistage thermal cycle drying system, its waste gas that utilizes oven dry to produce carries out catalytic combustion, and the combustion heat carried out dual heat exchange, with heating, drying required air and pending waste gas, for baking oven provides temperature required and make waste gas reach catalytic combustion temperature required, thereby make just spontaneous combustion when exhaust gas concentration reaches predetermined value, realize the environmental protection purpose.

Seven of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, it unreels, preliminary treatment, baking oven, wrap-up place have the tension force supervisory control system respectively, monitor tension force everywhere with segmentation, avoid problems such as overtension or the too small fold that causes, monolateral degree of tightness and lax distortion.

Eight of the purpose of this utility model is to provide a kind of manufacturing installation of solar battery group backboard, and it is used to make the on-plane surface backboard.

To achieve these goals, the utility model discloses a kind of solar battery group backboard manufacturing installation, it comprises a unwinding device, a pretreatment unit, a coating unit, a multistage thermal cycle drying system, a cooling system and wrap-up that links to each other successively, and described basement membrane transmits successively through said apparatus.

Described unwinding device comprises one and unreels support, is arranged on a described unreeling shaft and one first tension force supervising device that unreels on the support.One volume basement membrane as the PET film, is placed on described unreeling on the support, and described unreeling shaft passes this volume basement membrane and unreels with the rotation of controlling this volume basement membrane, and described unreeling shaft is a single shaft gas lock fastening-type inflatable axle.The described first tension force supervising device comprises one first tension detector and one first tension control roll.Described basement membrane transmits successively through described support, described first tension detector and described first tension control roll of unreeling.

Described first tension control roll draws described basement membrane, makes described basement membrane unreel from described that support unreels and transfer to described pretreatment unit under the draw of described first tension control roll.Described first tension detector is arranged on described unreeling between support and described first tension control roll, described first tension detector detects the tension force of the basement membrane of transmission on it, as the basement membrane tension force that records departs from preset value, then adjust the position of described first tension control roll, to adjust the tension force of described basement membrane.

Described pretreatment unit comprises a dust cleaning apparatus, a Destaticizing device and one second tension force supervising device.Described dust cleaning apparatus and described Destaticizing device are respectively applied for impurity and described epilamellar static such as removing described epilamellar greasy dirt, dust.The described second tension force supervising device comprises one second tension detector and one second tension control roll.Described basement membrane transmits successively through described dust cleaning apparatus, described Destaticizing device, described second tension control roll and described second tension detector.

The traction of described second tension control roll transfers to the basement membrane of described pretreatment unit, makes described basement membrane transmit successively through described dust cleaning apparatus and described Destaticizing device, to remove impurity and static such as greasy dirt on it, dust successively.Under the draw of described second tension control roll, transfer to described coating unit through pretreated basement membrane.Before transmission entered described coating unit, described second tension detector detected on it tension force of the basement membrane of transmission, as the basement membrane tension force that records departs from preset value, then adjusted the position of described second tension control roll, to adjust the tension force of described basement membrane.

Described coating unit comprises an applicator roll, and tangent with described applicator roll respectively a carrying roller, a metering roll and a pressure roller.Described carrying roller screws out adhesive tape and go out described coating from the coating material cartridge that applies basement membrane, and rotation is given described applicator roll through the described applicator roll tangent with it with the paint transfer on it along its axial rotation.According to default coating thickness, adjust tangent applicator roll and the spacing between the described metering roll, with the coating thickness of control basement membrane.The rotation of described applicator roll is through described metering roll, controlling the paint thickness on the described applicator roll, and continues rotation through the described pressure roller tangent with it.

Described coating unit is preferably the reverse coating unit of three rollers, tangent line coating unit or other coating units that is suitable for.

The basement membrane that transfers to described coating unit tangentially passes described applicator roll and described pressure roller, described applicator roll and described pressure roller make described basement membrane transmit to described multistage thermal cycle drying system place along transmission direction to commentaries on classics, described pressure roller is to the described applicator roll place preset pressure of exerting pressure, make the two push described basement membrane and and then make the coating on the described applicator roll be coated on the described basement membrane, form coating.

Preferably, described applicator roll is flat coating roller or on-plane surface applicator roll, and promptly the outer surface of described applicator roll is planar structure or nonplanar structure.

When described applicator roll is the on-plane surface applicator roll, its outer surface is provided with a baseplane and establishes one group of patterning projection (patterned protrusion), and described patterning projection is the projection of striated projection, rhombus projection, block-like protrusions or other preset shapes.

Preferably, on the outer surface of described applicator roll, the area ratio between described baseplane and the described patterning projection is 1: 1.

Be coated with coating on the basement membrane after described coating unit is handled, basement membrane transfers to described multistage thermal cycle drying system and dries processing subsequently.

Described multistage thermal cycle drying system comprises following structure:

One group of baking oven, described baking oven are connected mutually and are formed the multi-stage drying device of a segmented;

A thermocirculator;

One group of pipeline, described baking oven are communicated on the described thermocirculator by corresponding pipeline separately respectively.

Basement membrane after the described coating transmits successively and enters each baking oven, and is heated oven dry in each baking oven.

Preferably, the bake out temperature difference of described each baking oven forms certain temperature gradient, thereby forms a multistage drying system.

Preferably, described each pipeline further comprises one first arm and one second arm.Described first arm respectively will be separately waste gas in the corresponding described baking oven transfer to described thermocirculator, described second arm will be in described thermocirculator heated hot air heated transfers to corresponding separately described baking oven respectively.

Preferably, further be provided with an adjuster valve on described each second arm, it is used to regulate the flow of the hot-air that most second arms provide to described baking oven.Enter the flow of the hot-air of described each baking oven by adjusting, control described each temperature of oven, thereby form different bake out temperatures, form multistage drying system with temperature gradient in described each oven interior.

Described thermocirculator comprises one first heat exchanger, a catalytic bed, a combustion chamber and one second heat exchanger.

Described first heat exchanger and described second heat exchanger are cold fluid-hot fluid heat exchanger.Described first heat exchanger has first cold fluid inlet, the outlet of first cold fluid, first hot fluid inlet and the outlet of first hot fluid.Described second heat exchanger has second cold fluid inlet, the outlet of second cold fluid, second hot fluid inlet and the outlet of second hot fluid.

Described first cold fluid inlet connects described first arm, described first cold fluid outlet connects an end of described combustion chamber by described catalytic bed, described first hot fluid inlet connects the other end of described combustion chamber, described first hot fluid outlet connects second hot fluid inlet of described second heat exchanger, gas described second hot fluid outlet is exported the gas after burning is handled or export the burning processing in exhaust gas processing device in atmosphere after, described second cold fluid inlet input air or go out to import cleaned air passes from air cleaning unit from atmosphere, described second cold fluid outlet connects described each second arm.

The waste gas of discharging from described each baking oven compiles through corresponding described each second arm, transfers to described thermocirculator.Above-mentioned waste gas enters described first heat exchanger from the transmission of described cold fluid porch and carries out heat exchange (concrete heat exchange is described in detail hereinafter), and also passing described catalytic bed subsequently enters described combustion chamber from the discharge of the described first cold fluid exit.Described waste gas in the combustion chamber, burns under the catalytic action of catalytic bed again, and its contained organic gas burning is converted into harmless nitrogen oxide and water.Waste gas after burning is handled enters described first heat exchanger from the transmission of the first hot fluid porch and carries out heat exchange, subsequently from described second hot fluid outlet.

Waste gas after burning enters described second heat exchanger from the transmission of the described second hot fluid porch after heat exchange, and carries out heat exchange with the air of importing from the described second cold fluid porch, discharges from the second hot fluid exit subsequently.EGT reduces after the burning of heat exchange, and raise through the heat-exchanged air temperature, it is discharged from described cold fluid exit, form hot-air, this hot-air enters described each second arm that links to each other with described cold fluid outlet subsequently, and transfer to corresponding described each baking oven respectively, thereby be used to heat described baking oven so that the temperature of baking needed to be provided.

Preferably, described multistage thermal cycle drying system further comprises one group of the 3rd tension force supervising device, and described the 3rd tension force supervising device comprises one the 3rd tension detector and one the 3rd tension control roll.Be provided with described the 3rd a tension force supervising device in described each baking oven, described basement membrane is described the 3rd tension detector of transmission process successively and described the 3rd tension control roll in described each baking oven, described the 3rd tension control roll draws described basement membrane and transmits successively and pass described drying unit, described the 3rd tension detector detects the tension force of the basement membrane of transmission on it, as the basement membrane tension force that records departs from preset value, then adjust the position of described the 3rd tension control roll, to adjust the tension force of described basement membrane.

Preferably, regulate described adjuster valve, thereby adjust the hot air flowrate of corresponding second arm, thereby adjust the internal temperature of corresponding baking oven, make the bake out temperature difference of described baking oven to form multistage oven dry.When described basement membrane transmits through described baking oven successively, in different baking ovens, carry out multistage oven dry through different bake out temperatures.

Described basement membrane is through the oven dry of described multistage thermal cycle drying system, and transmission enters described cooling system.

Described cooling system comprises one group of air knife and one group of chill roll successively along the basement membrane transmission direction.Described air knife is positioned at the top that described basement membrane applies cated that side, its with normal temperature air supercharging after-blow to described basement membrane, to cool off described basement membrane.The inside of described chill roll is filled with the liquid of cooling usefulness, is generally water, and described each chill roll is tangent successively, and described basement membrane is successively through the traction and the extruding of described each chill roll, and in above-mentioned contact transmission course, described basement membrane is cooled.

Preferably, regulate the temperature of described chill roll internal coolant, thereby adjust the temperature of corresponding chill roll, thereby form multistage cooling.When described basement membrane transmits through described chill roll successively,, carry out multistage cooling through different chilling temperatures at different chill roll places.

Basement membrane through cooling transfers to described wrap-up.Described wrap-up comprises a double translation frame formula wrap-up and one the 4th tension force supervising device, and described the 4th tension force supervising device comprises one the 4th tension detector and one the 4th tension control roll.Described basement membrane transmits successively through described the 4th tension detector and described the 4th tension control roll, transfers to described double translation frame formula wrap-up subsequently and carry out the rolling cutting under the traction of described the 4th tension control roll.Wherein, described the 4th tension detector detects on it tension force of the basement membrane of transmission, as the basement membrane tension force that records departs from preset value, then adjusts the position of described the 4th tension control roll, to adjust the tension force of described basement membrane.

So far, that described basement membrane passes through successively is anti-roll, preliminary treatment, coating, oven dry, cooling and rolling, is processed to required solar battery group backboard.

Preferably, described basement membrane adopts the PET film.

Preferably, described basement membrane adopts the fluoro containing polymers resin to apply, as polyvinyl fluoride, Kynoar, polytetrafluoroethylene, perfluoroethylene-propylene, fluorubber, chlorotrifluoroethylene-alkyl vinyl ether co-polymer, or two or more the mixture in the above-mentioned fluoro containing polymers resin.

Adopt device of the present utility model, based on basement membrane, can produce the solar cell module back veneer of wide cut, the disposable productions of finishing backboard of step such as wherein said basement membrane process unreels, preliminary treatment, coating, oven dry, side cut, arrangement, rolling, wide cut can reach 2M, and production efficiency is higher.

Device of the present utility model adopts the thermocirculator with catalytic combustion equipment and heat exchanger to carry out exhaust-gas treatment, and its main purpose has two: make the waste gas after the processing reach the environment protection emission requirement; Reclaim heat and carry out the recycling energy-conservation requirement that reaches.The operation principle of described thermocirculator mainly is catalytic bed and the combustion chamber that the high heat waste gas that utilizes baking oven to discharge enters thermocirculator, carry out flameless combustion under (200～400 ℃) at low temperatures by catalyst (noble metals such as palladium, platinum), thereby realize complete oxidation to organic exhaust gas, pernicious gas is decomposed into harmless nitrogen oxide, oxycarbide and water, be generally carbon dioxide and steam, reach the requirement of environment protection emission.Purified gas passes through heat exchanger, carry out heat exchange with the needs purified waste gas, improve the temperature of waste gas, make waste gas reach the temperature requirement of catalytic combustion, do not need to accomplish the idle operation of outside energy, operating cost reduces greatly, through the heat recovery and utilization that catalytic postcombustion produced, reaches purpose of energy saving.

Thermocirculator of the present utility model is compared with traditional electrical heatable catalytic burner, can save 80% the electricity charge, compares with direct burning heating, can save 50%.Carry out the heat exchange second time through gas and air behind the catalytic purification, purified gas enters atmosphere subsequently, and heated air is delivered to baking oven as high-temperature gas, carries out heat integration.

In the prior art, reduce tension force and be in order to reduce basement membrane deformation in process of production, existing equipment all adopts a system tension, does not have segmentation, and its tension force everywhere all is controlled at more than 100 kilograms.Yet this has just caused, and under the baking stage hot conditions, stretcher strain appears in basement membrane especially easily, and it can cause contraction again subsequently in packaging technology.

For the wide cut basement membrane, the big wide cut basement membrane of 2 meters of fabric widths particularly, the tension force in its manufacture process must strict be controlled, otherwise situations such as fold, monolateral degree of tightness and stretcher strain can occur.According to different workshop sections the different needs of tension force is carried out the segmentation monitoring to tension force in the utility model, unreeling and applying stage workshop section because need to guarantee the smooth of basement membrane, Tension Control is at 30～50 kilograms of tension force, for avoiding basement membrane distortion appears in condition of high temperature bottom at baking stage, Tension Control is at 5～10 kilograms of tension force, furl neatly for guaranteeing basement membrane in the rolling stage, Tension Control is at 20～30 kilograms.

The utility model adopts the on-plane surface applicator roll to make the on-plane surface backboard, has one group of patterning projection on the described on-plane surface backboard, thereby increases the area of dissipation of backboard.Consider problems such as the intensity of backboard, follow-up transportation, installation, through test surperficial on-plane surface backboard projection and the area ratio of non-projection be 1: 1 o'clock, can be with above-mentioned controlling factors a safe range.

Below; to be described further by specific embodiment; yet embodiment only is giving an example of the optional execution mode of the utility model, and its disclosed feature only is used for explanation and sets forth the technical solution of the utility model, and is not used in qualification protection range of the present utility model.

Description of drawings

Fig. 1 is the structural representation of solar battery group backboard manufacturing installation of the present utility model.

Fig. 2 a is one of the operation principle schematic diagram of the tension control roll of solar battery group backboard manufacturing installation of the present utility model.

Fig. 2 b be solar battery group backboard manufacturing installation of the present utility model tension control roll the operation principle schematic diagram two.

Fig. 3 a is the stereogram of the applicator roll of solar battery group backboard manufacturing installation of the present utility model.

Fig. 3 b is the partial enlarged drawing of the applicator roll shown in Fig. 3 a.

Fig. 4 a is the stereogram according to the applicator roll of the solar battery group backboard manufacturing installation of another preferred embodiment of the utility model.

Fig. 4 b is the partial enlarged drawing of the applicator roll shown in Fig. 4 a.

Fig. 5 a is the stereogram according to the applicator roll of the solar battery group backboard manufacturing installation of another preferred embodiment of the utility model.

Fig. 5 b is the partial enlarged drawing of the applicator roll shown in Fig. 5 a.

Fig. 6 for the coating of adopting the manufacturing of the utility model manufacturing installation after the comparison diagram of PET film after PET film and the traditional coating.

Fig. 7 is the structural representation of the thermocirculator of solar battery group backboard manufacturing installation of the present utility model.

Embodiment

According to claim of the present utility model and the disclosed content of specification, the technical solution of the utility model literary composition specific as follows is described.

As shown in Figure 1, solar battery group backboard manufacturing installation of the present utility model comprises successively a unwinding device linking to each other 1, pretreatment unit 2, coating unit 3, multistage thermal cycle drying system 4, a cooling system 5 and a wrap-up 6.

Make the basement membrane that described solar battery group backboard is adopted, as the PET film, transmission is through described unwinding device 1, described pretreatment unit 2, described coating unit 3, described multistage thermal cycle drying system 4, described cooling system 5 and described wrap-up 6 successively, thereby successively respectively through unreel, the removal of impurity and static, coating, oven dry, cooling and wrapup routine, form described solar battery group backboard.

As shown in Figure 1, described unwinding device 1 comprises one and unreels support 11, is arranged on a described unreeling shaft 12 and one first tension force supervising device 10 that unreels on the support 11.One volume basement membrane as the PET film, is placed on described unreeling on the support 11, and described unreeling shaft 12 passes this volume PET film and unreels with the rotation of controlling this volume PET film, and described unreeling shaft is a single shaft gas lock fastening-type inflatable axle.The described first tension force supervising device 10 comprises one first tension detector 101 and one first tension control roll 102.Described PET film transmits successively through described support 11, described first tension detector 101 and described first tension control roll 102 of unreeling.

The described PET film of described first tension control roll 102 traction makes described PET film unreel from described that support 11 unreels and transfer to described pretreatment unit 2 under the draw of described first tension control roll 102.Described first tension detector 101 is arranged on described unreeling between support 11 and described first tension control roll 102, described first tension detector 101 detects the tension force of the PET film of transmission on it, as the PET film tension force that records departs from preset value, then adjust the position of described first tension control roll 102, to adjust the tension force of described PET film.

Shown in Fig. 2 a, when the tension force of the PET film that records when described first tension detector 101 was higher than preset value, promptly overtension, PET film were tight excessively, adjust the position of first tension control roll 102 this moment, make it depart from the PET film, reduce the tight degree of PET film, to reduce tension force.Shown in Fig. 2 b, when the tension force of the PET film that records when described first tension detector 101 was lower than preset value, promptly tension force was too small, the PET film is excessively lax, adjust the position of first tension control roll 102 this moment, make its convergence PET film, increase the tight degree of PET film, to increase tension force.

As shown in Figure 1, described pretreatment unit 2 comprises a dust cleaning apparatus 21, a Destaticizing device 22 and one second a tension force supervising device 20.Described dust cleaning apparatus 21 and described Destaticizing device 22 are respectively applied for impurity and the epilamellar static of described PET such as the greasy dirt removed on the described PET film, dust.The described second tension force supervising device 20 comprises one second tension detector 201 and one second tension control roll 202.Described PET film transmits successively through described dust cleaning apparatus 21, described Destaticizing device 22, described second tension control roll 202 and described second tension detector 201.

Described second tension control roll 202 traction transfers to the PET film of described pretreatment unit 2, makes described PET film transmit successively through described dust cleaning apparatus 21 and described Destaticizing device 22, to remove impurity and static such as greasy dirt on it, dust successively.Under the draw of described second tension control roll 202, transfer to described coating unit 3 through pretreated PET film.Before transmission enters described coating unit 3, described second tension detector 201 detects the tension force of the PET film of transmission on it, as the PET film tension force that records departs from preset value, then adjusts the position of described second tension control roll 202, to adjust the tension force of described PET film.

The detection and the adjustment of 20 pairs of described PET film tension force of the described second tension force supervising device are identical with the described first tension force supervising device 10.

As shown in Figure 1, described coating unit 3 comprises an applicator roll 32, and respectively with the tangent carrying roller of described applicator roll 32 31, a metering roll 33 and a pressure roller 34.Described carrying roller 31 screws out adhesive tape and go out described coating from the coating material cartridge that is coated with coated with PET film, and rotation is given described applicator roll 32 through the described applicator roll 32 tangent with it with the paint transfer on it along its axial rotation.According to default coating thickness, adjust tangent applicator roll 32 and the spacing between the described metering roll 33, with the coating thickness of control PET film.32 rotations of described applicator roll are through described metering roll 31, controlling the paint thickness on the described applicator roll 32, and continue rotation through the described pressure roller 34 tangent with it.

The PET film that transfers to described coating unit 3 tangentially passes described applicator roll 32 and described pressure roller 34,34 pairs of commentaries on classics of described applicator roll 32 and described pressure roller make described PET film transmit to described multistage thermal cycle drying system 4 places along transmission direction, described pressure roller 34 is to the described applicator roll 32 places preset pressure of exerting pressure, make the two push described PET film and and then make the coating on the described applicator roll 32 be coated on the described PET film, form coating.

Described applicator roll 32 is flat coating roller or on-plane surface applicator roll, and the outer surface of promptly described applicator roll 32 is planar structure or nonplanar structure.

When described applicator roll 32 is the on-plane surface applicator roll, its outer surface is provided with a baseplane 321 and establishes one group of patterning projection 322 (patterned protrusion), shown in Fig. 3 a-3b, Fig. 4 a-4b and Fig. 5 a-5b, described patterning projection 322 is the projection of striated projection, rhombus projection, block-like protrusions or other preset shapes.

Preferably, on the outer surface of described applicator roll 32, the area ratio between described baseplane 321 and the described patterning projection 322 is 1: 1.

Shown in Fig. 3 a, shown in its axial distribution of outer surface upper edge of applicator roll 32 one group of strip projected parts 322 is arranged, thereby the outer surface of described applicator roll 32 is further divided into a baseplane 321, and the described strip projected parts 322 that distributes thereon.Shown in Fig. 3 b, even and equidistantly parallel being distributed on the described baseplane 321 of the height of projection of described each strip projected parts 322.

Shown in Fig. 4 a, shown in be distributed with one group of staggered striped projection 322 on the outer surface of applicator roll 32, above-mentioned staggered striped has formed one group of argyle design, thereby the outer surface of described applicator roll 32 is further divided into a baseplane 321, and the described staggered striped projection 322 that distributes thereon.Shown in Fig. 4 b, even and equidistant parallel being distributed on the described baseplane 321 of unidirectional striped of the height of projection of described each staggered striped projection 322.

Shown in Fig. 5 a, shown in be distributed with a chunk shape projection 322 on the outer surface of applicator roll 32, thereby the outer surface of described applicator roll 32 is further divided into a baseplane 321, and the described block-shaped protrusion 322 that distributes thereon.Shown in Fig. 5 b, the height of projection of described each block-shaped protrusion 322 evenly and equidistantly is distributed on the described baseplane 321.

Described PET film forms the coating with patterning projection on it after applicator roll 32 applies.As shown in Figure 6, the uniform coating of one layer thickness is only arranged on traditional PET film, its thickness is d, and the coating on the PET film of the present utility model is the coating with certain relief pattern, it comprises first coating and second coating, and described first coating can be regarded a substrate as, and it has the first coating thickness d1, described second coating is made one group of projection applying in described substrate, it has the second coating thickness d2.Wherein, the described second coating thickness d2 is determined by the baseplane 321 of described applicator roll 32 and the difference in height between the patterning projection 322, the described first coating thickness d1 has the paint thickness that is attached in the coating procedure on the described applicator roll 32 to determine, preferably, d1=d2, this moment, the rising height of described patterning projection 322 equated with the coating layer thickness of described PET film after applicator roll 32 applies.Coating layer thickness in the utility model described in the coating procedure refers to the first coating thickness d1.

Be coated with coating on the PET film after described coating unit 3 is handled, the PET film transfers to described multistage thermal cycle drying system 4 and dries processing subsequently.

As shown in Figure 1, described multistage thermal cycle drying system 4 comprises following structure:

One group of baking oven 41, described baking oven 41 is the multi-stage drying device of a segmented of series connection formation mutually;

A thermocirculator 42;

One group of pipeline 43, described baking oven 41 are communicated on the described thermocirculator 42 by corresponding pipeline 43 separately respectively.

PET film after the described coating transmits successively and enters each baking oven 41, and is heated oven dry in each baking oven 41.

Preferably, the bake out temperature difference of described each baking oven 41 forms certain temperature gradient, thereby forms a multistage drying system.PET film after the described coating is dried in each baking oven 41, and above-mentioned drying course is attended by the volatilization of the contained chemical substance of coating more, thereby produces the waste gas of drying course.This waste gas contains a large amount of chemical substances more, particularly volatile inflammable organic gas, and have toxicity mostly.In the conventional art, above-mentioned waste gas generally directly is discharged in the atmosphere and is gone, and perhaps is taken as tail gas and collects absorption.

In the utility model, preferably adopt 42 pairs of above-mentioned waste gas of described thermocirculator to collect, burn and handle, and the combustion heat that utilizes waste gas by heat exchange to described each baking oven 41 heat supply, temperature required to guarantee each baking oven 41, and remove poisonous and hazardous organic gas in the waste gas by flameless combustion, organic exhaust gas more than 99% is decomposed into harmless nitrogen oxide and water, thereby guarantees that the tail gas of discharging through thermocirculator 42 is nontoxic.

Described each pipeline 43 further comprises one first arm 431 and one second arm 432.Described first arm 431 transfers to described thermocirculator 42 with corresponding separately described baking oven 41 interior waste gas respectively, and described second arm 432 will be in described thermocirculator 42 heated hot air heated transfer to corresponding separately described baking oven 41 respectively.

Preferably, further be provided with an adjuster valve 44 on described each second arm 432, it is used to regulate the flow of the hot-air that described second arm 432 provides to described baking oven 41.Enter the flow of the hot-air of described each baking oven 41 by adjusting, control the temperature of described each baking oven 41, thereby form different bake out temperatures in that described each baking oven 41 is inner, form multistage drying system with temperature gradient.

As shown in Figure 7, described thermocirculator 42 comprises one first heat exchanger 421, catalytic bed 423, a combustion chamber 424 and one second heat exchanger 425.

Described first heat exchanger 421 and described second heat exchanger 425 are cold fluid-hot fluid heat exchanger.Described first heat exchanger 421 has first cold fluid inlet, 4211, first cold fluid outlet, 4212, first hot fluid inlet, 4213 and first hot fluid outlet 4214.Described second heat exchanger 425 has second cold fluid inlet, 4251, second cold fluid outlet, 4252, second hot fluid inlet, 4253 and second hot fluid outlet 4254.

Described first cold fluid inlet 4211 connects described first arm 431, described first cold fluid outlet 4212 connects an end of described combustion chamber 424 by described catalytic bed 423, described first hot fluid inlet 4213 connects the other end of described combustion chamber 424, described first hot fluid outlet 4214 connects second hot fluid inlet 4253 of described second heat exchanger 425, gas described second hot fluid outlet 4254 is exported the gas after burning is handled or export the burning processing in exhaust gas processing device in atmosphere after, described second cold fluid inlet 4251 input air or go out to import cleaned air passes from air cleaning unit from atmosphere, described second cold fluid outlet 4252 connects described each second arm 432.

Wherein, described catalytic bed 424 contains catalyst, has the metal of catalytic action as palladium, platinum etc.

The waste gas of discharging from described each baking oven 41 compiles through corresponding described each second arm 431, transfers to described thermocirculator 42.Above-mentioned waste gas enters described first heat exchanger 421 and carries out the concrete heat exchange of heat exchange and describe in detail hereinafter from 4211 transmission that enter the mouth of described cold fluid, and exports 4212 from described first cold fluid and discharge and pass described catalytic bed 423 subsequently and enter described combustion chamber 424.Described waste gas in the combustion chamber 424, burns under the catalytic action of catalytic bed 423 again, and its contained organic gas burning is converted into harmless nitrogen oxide and water.Waste gas after burning is handled enters described first heat exchanger 421 and carries out heat exchange from 4213 transmission that enter the mouth of first hot fluid, subsequently from described second hot fluid outlet 4214.From the above, unburned EGT is lower, and the waste gas after burning temperature is higher, and the two carries out heat exchange in described first heat exchanger 421, thereby makes described unburned EGT raise, to reach the required temperature of catalytic combustion.Waste gas after burning enters described second heat exchanger 425 from 4253 transmission that enter the mouth of described second hot fluid after heat exchange, and carries out heat exchange with the air of 4251 inputs that enter the mouth from described second cold fluid, exports 4254 from second hot fluid subsequently and discharges.EGT reduces after the burning of heat exchange, and raise through the heat-exchanged air temperature, it exports 4252 from described cold fluid and discharges, form hot-air, this hot-air enters described each second arm 432 that links to each other with described cold fluid outlet 4252 subsequently, and transfer to corresponding described each baking oven 41 respectively, thereby be used to heat described baking oven 41 so that the temperature of baking needed to be provided.

Because described waste gas may exist its temperature not rise to the temperature required scope of catalytic combustion after described first heat exchanger 421 places carry out heat exchange.In this case, waste gas may take place can't clean-burning situation in combustion chamber 424.

For fear of above-mentioned situation, preferably, further be provided with a heating chamber 422 between described first cold fluid outlet 4212 and the described catalytic bed 423.Described heating chamber 422 is used for its gas inside is carried out preheating.Described heating chamber 422 inside are provided with a temperature sensor 4221 and a heater 4222, described temperature sensor 4221 is used for measuring in real time described heating chamber 422 gas inside temperature, when gas temperature was lower than the lower limit of preset temperature range, described heater 4222 was opened gas heated; When gas temperature was higher than the higher limit of preset temperature range, described heater 4222 stopped gas heated; So just guaranteed that described waste gas has sufficiently high temperature when entering described combustion chamber 424.

Preferably, described multistage thermal cycle drying system 4 has at least 3 baking ovens 41.

In a preferred embodiment, when adopting the multistage thermal cycle drying system 4 with 3 baking ovens 41 to carry out multistage oven dry, the bake out temperature of first order baking oven 411 is that 75 ℃～85 ℃, drying time are 1～3 minute; The bake out temperature of second level baking oven 412 is that 95 ℃～105 ℃, drying time are 2～4 minutes; The bake out temperature of third level baking oven 413 is that 115 ℃～125 ℃, drying time are 2～4 minutes.

Preferably, the bake out temperature of described first order baking oven 41 is that 80 ℃, drying time are 2 minutes.

Preferably, the bake out temperature of described second level baking oven 41 is that 100 ℃, drying time are 3 minutes.

Preferably, the bake out temperature of described third level baking oven 41 is that 120 ℃, drying time are 3 minutes.

Preferably, described multistage thermal cycle drying system 4 further comprises one group of the 3rd tension force supervising device 40, and described the 3rd tension force supervising device 40 comprises one the 3rd tension detector 401 and one the 3rd tension control roll 402.Be provided with described the 3rd a tension force supervising device in described each baking oven 41, described PET film is described the 3rd tension detector 401 of transmission process successively and described the 3rd tension control roll 402 in described each baking oven 41, the described PET film of described the 3rd tension control roll 402 tractions transmits successively and passes described drying unit 41, described the 3rd tension detector 401 detects the tension force of the PET film of transmission on it, as the PET film tension force that records departs from preset value, then adjust the position of described the 3rd tension control roll 402, to adjust the tension force of described PET film.

The detection and the adjustment of 40 pairs of described PET film tension force of described the 3rd tension force supervising device are identical with the described first tension force supervising device 10.

Preferably, regulate described adjuster valve 44, thereby adjust the hot air flowrate of corresponding second arm 432, thereby adjust the internal temperature of corresponding baking oven 41, make the bake out temperature difference of described baking oven 41 to form multistage oven dry.When described PET film transmits through described baking oven 41 successively, in different baking oven 41, carry out multistage oven dry through different bake out temperatures.

This multistage oven dry can provide the bake out temperature of different gradients, makes the gentle rising of temperature of PET film, thereby has avoided the shock heating coated and dried inequality of bringing, problem such as break.

Described PET film is through the oven dry of described multistage thermal cycle drying system 4, and transmission enters described cooling system 5.

Described cooling system 5 comprises one group of air knife 51 and one group of chill roll 52 successively along the transmission direction of PET film.Described air knife 51 is positioned at the top that described PET film applies cated that side, its with normal temperature air supercharging after-blow to described PET film, to cool off described PET film.Preferably, described cooling system 5 comprises 4～8 groups of air knives 51.The inside of described chill roll 52 is filled with the liquid of cooling usefulness, is generally water, and described each chill roll 52 is tangent successively, and described PET film is successively through the traction and the extruding of described each chill roll 52, and in above-mentioned contact transmission course, described PET film is cooled.Preferably, described cooling system 5 comprises at least 3 chill rolls 52.

Preferably, regulate the temperature of described chill roll 52 internal coolant, thereby adjust the temperature of corresponding chill roll 52, thereby form multistage cooling.When described PET film transmits through described chill roll 52 successively,, carry out multistage cooling through different chilling temperatures at different chill rolls 52 places.

In a preferred embodiment, when the cooling system 5 that employing has 3 chill rolls cools off, the chilling temperature of described air knife 51 is 80 ℃, the chilling temperature of first order chill roll 521 is 60 ℃～70 ℃, the chilling temperature of second level chill roll 522 is 35 ℃～45 ℃, and the chilling temperature of third level chill roll 523 is 20 ℃～30 ℃.

Preferably, the chilling temperature of described first order chill roll 521 is 65 ℃.

Preferably, the chilling temperature of described second level chill roll 522 is 40 ℃.

Preferably, the chilling temperature of described third level chill roll 523 is 25 ℃.

This multistage cooling can provide the chilling temperature of different gradients, makes the gentle decline of temperature of PET film, thereby the coating of having avoided quenching to bring is tight, produce problem such as wrinkle

PET film through cooling transfers to described wrap-up 6.Described wrap-up 6 comprises a double translation frame formula wrap-up 61 and one the 4th tension force supervising device 60, and described the 4th tension force supervising device 60 comprises one the 4th tension detector 601 and one the 4th tension control roll 602.Described PET film transmits successively through described the 4th tension detector 601 and described the 4th tension control roll 602, transfers to described double translation frame formula wrap-up 61 subsequently and carry out the rolling cutting under the traction of described the 4th tension control roll 602.Wherein, described the 4th tension detector 601 detects the tension force that it goes up the PET film that transmits, as the PET film tension force that records departs from preset value, then adjusts the position of described the 4th tension control roll 602, to adjust the tension force of described PET film.

The detection and the adjustment of 60 pairs of described PET film tension force of described the 4th tension force supervising device are identical with the described first tension force supervising device 10.

So far, that described PET film passes through successively is anti-roll, preliminary treatment, coating, oven dry, cooling and rolling, is processed to required solar battery group backboard.

Wherein, the default tension range of described first tension detector 101 is 30～50 kilograms, when described PET film departs from above-mentioned default tension range in described unwinding device 1, described first tension control roll 102 is adjusted the position of described PET film, thus with the Tension Control of PET film at 30～50 kilograms.

Wherein, the default tension range of described second tension detector 201 is 30～50 kilograms, when described PET film departs from above-mentioned default tension range in described pretreatment unit 2, described second tension control roll 202 is adjusted the position of described PET film, thus with the Tension Control of PET film at 30～50 kilograms.

Wherein, the default tension range of described each the 3rd tension detector 401 is 5～10 kilograms, when described PET film departs from above-mentioned default tension range in described each corresponding baking oven 41, described the 3rd tension control roll 402 is adjusted the position of described PET film, thus with the Tension Control of PET film at 5～10 kilograms.

Wherein, the default tension range of described each the 4th tension detector 601 is 20～30 kilograms, when described PET film departs from above-mentioned default tension range in described wrap-up 61, described the 4th tension control roll 602 is adjusted the position of described PET film, thus with the Tension Control of PET film at 20～30 kilograms.

Below be described in further detail, adopt solar battery group backboard manufacturing installation of the present utility model, with basement membrane, as the PET film, make the method for solar battery group backboard, it may further comprise the steps:

Step 1: provide basement membrane, as the PET film

Step 2: static and the impurity of removing described PET film surface;

Step 3: on described PET film, evenly apply fluorine material, coating layer thickness 0.04mm～0.06mm;

Step 4: step 3 gained PET film is dried under 75 ℃～85 ℃, 95 ℃～105 ℃, 115 ℃～125 ℃ conditions successively, and drying time amounts to 8 minutes;

Step 5: adopt air-cooled step 4 gained PET film to be cooled to 75 ℃～85 ℃, adopt chill roll that the PET film further is cooled to room temperature subsequently;

Step 6: arrangement step 5 gained PET film and rolling.

In the wherein said step 3, adopt 32 pairs of PET films of on-plane surface applicator roll to apply.The outer surface of described applicator roll 32 is provided with a baseplane 321 and establishes one group of patterning projection 322 (patterned protrusion), shown in Fig. 3 a-3b, Fig. 4 a-4b and Fig. 5 a-5b, described patterning projection 322 is the projection of striated projection, rhombus projection, block-like protrusions or other preset shapes.Preferably, on the outer surface of described applicator roll 32, the area ratio between described baseplane 321 and the described patterning projection 322 is 1: 1.Preferably, the height of the patterning projection 322 of described applicator roll 32 is 0.04mm～0.06mm.Adopting the coating on the PET film after above-mentioned on-plane surface applicator roll 32 applies is the coating with certain relief pattern, it comprises first coating and second coating, described first coating can be regarded a substrate as, its coating layer thickness is 0.04mm～0.06mm, described second coating is made one group of projection applying in described substrate, its coating layer thickness is 0.04mm～0.06mm, and the maximum coating layer thickness of the coating on the promptly described PET film is that 0.08mm～0.12mm and minimum cover thickness are 0.04mm～0.06mm.

In the described step 4, adopt described multistage thermal cycle drying system 4 to carry out multistage oven dry, first order bake out temperature is that 75 ℃～85 ℃, drying time are 1～3 minute; Second level bake out temperature is that 95 ℃～105 ℃, drying time are 2～4 minutes; Third level bake out temperature is that 115 ℃～125 ℃, drying time are 2～4 minutes.

Preferably, described first order bake out temperature is that 80 ℃, drying time are 2 minutes.

Preferably, described second level bake out temperature is that 100 ℃, drying time are 3 minutes.

Preferably, described third level bake out temperature is that 120 ℃, drying time are 3 minutes.

Preferably, step 4 further may further comprise the steps:

Step 4.1: with step 3 gained PET film drying time under 80 ℃ of conditions is 2 minutes;

Step 4.2: with step 4.1 gained PET film drying time under 100 ℃ of conditions is 3 minutes;

Step 4.3: with step 4.2 gained PET film drying time under 120 ℃ of conditions is 3 minutes.

In the described step 5, preferably adopt one group of air knife, be cooled to 80 ℃ with described PET film is air-cooled.

In the described step 5, preferably adopt chill roll that described PET film is carried out multistage cooling, at first carry out first order cooling, the PET film is cooled to 60 ℃～70 ℃, carry out second level cooling subsequently, the PET film is cooled to 35 ℃～45 ℃, carries out third level cooling at last, the PET film is cooled to 20 ℃～30 ℃.

Preferably, adopt first order cooling, the PET film is cooled to 65 ℃.

Preferably, adopt second level cooling, the PET film is cooled to 40 ℃.

Preferably, adopt third level cooling, the PET film is cooled to 25 ℃.

Preferably, step 5 further may further comprise the steps:

Step 5.1: adopt air-cooled step 4 gained PET film to be cooled to 80 ℃;

Step 5.2: adopt chill roll that step 5.1 gained PET film is cooled to 65 ℃;

Step 5.3: adopt chill roll that step 5.2 gained PET film is cooled to 40 ℃;

Step 5.4: adopt chill roll that step 5.3 gained PET film is cooled to 25 ℃;

In the described step 6, adopt described wrap-up 6 to carry out operations such as automatic winding, cutting.

In order to reduce the deformation in process of production of PET film, in wrap-up 1 of the present utility model, pretreatment unit 2, multistage thermal cycle drying system 4 and wrap-up 6, all be respectively equipped with the tension force supervising device detected and controlled PET film everywhere with segmentation tension force.In corresponding step 1, step 2, step 4 and the step 6, also further comprise the tension force monitoring step.

Preferably, described step 1 further may further comprise the steps:

Step 1.1: the PET film is unreeled;

Step 1.2: detect the tension force of described PET film, as the tension force that records departs from default tension range, then adjust the tension force of described PET film;

Wherein said tension range is 30～50 kilograms;

Step 1.3: export described PET film.

Preferably, described step 2 further may further comprise the steps:

Step 2.1: the impurity of removing described PET film surface;

Step 2.2: the static of removing described PET film surface;

Step 2.3: detect the tension force of described PET film, as the tension force that records departs from default tension range, then adjust the tension force of described PET film;

Wherein said tension range is 30～50 kilograms;

Step 2.4: export described PET film.

Preferably, described step 4 further may further comprise the steps:

Step 4.1.1: detect the tension force of the described PET film of gained, as the tension force that records departs from default tension range, then adjust the tension force of described PET film;

Wherein said tension range is 5～10 kilograms;

Step 4.1.2: with PET film drying time under 80 ℃ of conditions of gained is 2 minutes;

Step 4.2.1: detect the tension force of the described PET film of gained, as the tension force that records departs from default tension range, then adjust the tension force of described PET film;

Wherein said tension range is 5～10 kilograms;

Step 4.2.2: with PET film drying time under 100 ℃ of conditions of gained is 3 minutes;

Step 4.3.1: detect the tension force of the described PET film of gained, as the tension force that records departs from default tension range, then adjust the tension force of described PET film;

Wherein said tension range is 5～10 kilograms;

Step 4.3.2: with PET film drying time under 120 ℃ of conditions of gained is 3 minutes.

Preferably, step 6 further may further comprise the steps:

Step 6.1: detect the tension force of the described PET film of gained, as the tension force that records departs from default tension range, then adjust the tension force of described PET film;

Wherein said tension range is 20～30 kilograms;

Step 6.2: the PET film and the rolling of arrangement gained.

Show after deliberation, multistage thermal cycle drying system 4 of the present utility model is introduced described thermocirculator 42 with the waste gas that contains organic gas that drying course produces, described waste gas carries out catalytic combustion in described combustion chamber 424 under the effect of described catalytic bed 423.Our experiments show that, described catalytic bed 423 preferably contains the catalysis of noble metal catalysts such as palladium, platinum, it has the characteristics of little, the active height of resistance, good stability, utilize this catalytic bed, the purifying rate of toluene, dimethylbenzene reaches more than 99% in the described combustion chamber 424, above-mentioned waste gas is decomposed into harmless nitrogen oxide, CO2 and H2O through catalytic combustion, reaches the environment protection emission requirement.In addition, owing to adopted first heat exchanger 421 to carry out heat exchange, the waste gas that enters thermocirculator 42 has had enough temperature, as long as its exhaust gas concentration reaches 4.5g/M ³Just can accomplish circulating combustion voluntarily when above.

Because the required heat of air that the combustion heat of above-mentioned waste gas enough provides waste gas intensification institute's calorific requirement and heating to enter baking oven 42, so described multistage thermal cycle baking oven can accomplish idle operation and need not the external world heat is provided, thereby reduce operating cost greatly and realize the purpose of energy-saving and emission-reduction.

The above embodiment of the utility model is an example with the single face application type only, promptly is semi-finished product after PET simultaneously applies the fluorine material.As the FPF structure of need production dual coating, then only need repeated using said apparatus and method, just can obtain the FPF constructed products of dual coating.Produce the FPE constructed products as need, then only need repeated using said apparatus and method, apply EVA by the curtain coating mode, obtain the FPE product at the another side that does not have to apply.

Adopt the main performance index of the product that apparatus and method of the present utility model make as follows:

Project name	Unit	Index
			Material is formed		FPF
Thickness	mm	0.20?0.30?0.35
			Color		White black other
Maximum wide cut	mm	2000
			Hot strength (vertically/laterally)	MPa	≥140
Fracture elongation (vertically/laterally)	％	160/110
			Shrinkage (vertically/laterally)	％	≤1.0/0.5
Adhesion strength with EVA	N/cm	40
			Steam penetrating capacity	g/m 2?24h	2.0
The maximum system voltage that allows	VDC	＞1000 ＞1200
			Puncture voltage	KV	17

Our experiments show that utilize apparatus and method of the present utility model can produce solar cell module back veneer efficiently, its unit year output can reach 6,000,000 m ², and its product satisfies the requirement in useful life in 25 years of solar energy industry fully.

Foregoing is exemplifying of specific embodiment of the utility model, for the wherein not equipment of detailed description and structure, should be understood to take existing common apparatus in this area and universal method to be implemented.

The utility model the foregoing description for the usefulness of explanation technical solutions of the utility model, is enumerating of technical solutions of the utility model only only simultaneously, is not limited to the technical solution of the utility model and protection range thereof.Adopt equivalent technologies means, equivalent apparatus etc. the improvement of the utility model claims and the disclosed technical scheme of specification be will be understood that it is not exceed this real utility model right claim and the disclosed scope of specification.

Claims (18)

1. solar battery group backboard manufacturing installation, it is characterized in that, comprise the unwinding device (1), a pretreatment unit (2), a coating unit (3), a multistage thermal cycle drying system (4), a cooling system (5) and the wrap-up (6) that link to each other successively, making the basement membrane that described solar battery group backboard adopted transmits successively through said apparatus, thereby in said apparatus successively respectively through unreel, the removal of impurity and static, coating, oven dry, cooling and rolling handle, and forms described solar battery group backboard;

Described multistage thermal cycle drying system (4) further comprises following structure:

One group of baking oven (41), described baking oven (41) be the multi-stage drying device of a segmented of series connection formation mutually;

A thermocirculator (42);

One group of pipeline (43), described baking oven (41) are communicated on the described thermocirculator (42) by corresponding pipeline (43) separately respectively;

Wherein, described thermocirculator (42) is collected, is burnt and handle the waste gas that produces in the drying course in the described baking oven (41), and the combustion heat that utilizes waste gas by heat exchange to described each baking oven (41) heat supply.

2. solar battery group backboard manufacturing installation as claimed in claim 1 is characterized in that, described each pipeline (43) further comprises one first arm (431) and one second arm (432); Described first arm (431) respectively will be separately waste gas in the corresponding described baking oven (41) transfer to described thermocirculator (42), described second arm (432) will transfer to respectively in the corresponding separately described baking oven (41) through described thermocirculator (42) heated hot air heated.

3. solar battery group backboard manufacturing installation as claimed in claim 2 is characterized in that, described thermocirculator (42) comprises one first heat exchanger (421), a catalytic bed (423), a combustion chamber (424) and one second heat exchanger (425);

Described first heat exchanger (421) has first cold fluid inlet (4211), first cold fluid outlet (4212), first hot fluid inlet (4213) and first hot fluid outlet (4214);

Described second heat exchanger (425) has second cold fluid inlet (4251), second cold fluid outlet (4252), second hot fluid inlet (4253) and second hot fluid outlet (4254);

Described first cold fluid inlet (4211) connects described first arm (431), described first cold fluid outlet (4212) connects an end of described combustion chamber (424) by described catalytic bed (423), described first hot fluid inlet (4213) connects the other end of described combustion chamber (424), described first hot fluid outlet (4214) connects second hot fluid inlet (4253) of described second heat exchanger (425), gas after described second hot fluid outlet (4254) output burning is handled, described second cold fluid inlet (4251) input air, described second cold fluid outlet (4252) connects described each second arm (432).

4. solar battery group backboard manufacturing installation as claimed in claim 3, it is characterized in that, the waste gas of discharging from described each baking oven (41) compiles through corresponding described each second arm (431), transfer to described thermocirculator (42), and enter described first heat exchanger (421) from described first cold fluid inlet (4211) transmission and carry out heat exchange, and discharge and pass described catalytic bed (423) subsequently from described first cold fluid outlet (4212) and enter described combustion chamber (424);

Described waste gas is in described combustion chamber (424), burning under the catalytic action of catalytic bed (423),, the waste gas after burning is handled enters described first heat exchanger (421) and carries out heat exchange from (4213) transmission that enter the mouth of first hot fluid, exports (4214) from described second hot fluid subsequently;

Waste gas after burning enters described second heat exchanger (425) from described second hot fluid inlet (4253) transmission after heat exchange, and carry out heat exchange with the air of importing from described second cold fluid inlet (4251), discharge from second hot fluid outlet (4254) subsequently;

Raise through the heat-exchanged air temperature, it exports (4252) from described cold fluid and discharges, form hot-air, enter described each second arm (432) that links to each other with described cold fluid outlet (4252) subsequently, and transfer to corresponding described each baking oven (41) respectively, thereby be used to heat described baking oven (41) so that the temperature of baking needed to be provided.

5. solar battery group backboard manufacturing installation as claimed in claim 4 is characterized in that, further is provided with a heating chamber (422) between described first cold fluid outlet (4212) and the described catalytic bed (423), is used for its gas inside is carried out preheating;

Described heating chamber (422) inside is provided with a temperature sensor (4221) and a heater (4222), described temperature sensor (4221) is used for measuring in real time described heating chamber (422) gas inside temperature, when gas temperature is lower than the lower limit of preset temperature range, described heater (4222) is opened gas heated, when gas temperature is higher than the higher limit of preset temperature range, described heater (4222) stops gas heated, thereby makes described waste gas have sufficiently high temperature when entering described combustion chamber (424).

6. solar battery group backboard manufacturing installation as claimed in claim 5 is characterized in that, described catalytic bed (424) contains palladium or platinum as catalyst.

7. solar battery group backboard manufacturing installation as claimed in claim 6, it is characterized in that, further be provided with an adjuster valve (44) on described each second arm (432), it is used to regulate the flow of the hot-air that described second arm (432) provides to described baking oven (41), thereby adjust the internal temperature of corresponding baking oven (41), make the bake out temperature difference of described baking oven (41).

8. solar battery group backboard manufacturing installation as claimed in claim 7, it is characterized in that, described multistage thermal cycle drying system (4) further comprises one group of the 3rd tension force supervising device (40), and it comprises one the 3rd tension detector (401) and one the 3rd tension control roll (402);

Be provided with described the 3rd a tension force supervising device in described each baking oven (41), described basement membrane is described the 3rd tension detector (401) of transmission process successively and described the 3rd tension control roll (402) in described each baking oven (41);

Described the 3rd tension detector (401) detects on it tension force of the basement membrane of transmission, as the PET film tension force that records departs from preset value, then adjusts the position of described the 3rd tension control roll (402), to adjust the tension force of described basement membrane.

9. solar battery group backboard manufacturing installation as claimed in claim 8 is characterized in that described multistage thermal cycle drying system (4) has at least 3 baking ovens (41).

10. as claim 1,7 or 8 described solar battery group backboard manufacturing installations, it is characterized in that, described coating unit (3) comprises an applicator roll (32), and tangent with described applicator roll (32) respectively a carrying roller (31), a metering roll (33) and a pressure roller (34), the basement membrane that transfers to described coating unit (3) tangentially passes described applicator roll (32) and described pressure roller (34), forms coating.

11. solar battery group backboard manufacturing installation as claimed in claim 10 is characterized in that described applicator roll (32) is the on-plane surface applicator roll, its outer surface is provided with a baseplane (321) and establishes one group of patterning projection (322);

On the outer surface of described applicator roll (32), the area ratio between described baseplane (321) and the described patterning projection (322) is 1: 1.

12. solar battery group backboard manufacturing installation as claimed in claim 11 is characterized in that, the rising height of described patterning projection (322) equates with the coating layer thickness of described PET film after applicator roll (32) applies.

13. solar battery group backboard manufacturing installation as claimed in claim 12 is characterized in that, described patterning projection (322) is striated projection, rhombus projection or block-like protrusions.

14. as claim 1,7,8 or 12 described solar battery group backboard manufacturing installations, it is characterized in that described unwinding device (1) comprises one and unreels support (11), is arranged on a described unreeling shaft (12) and one the first tension force supervising device (10) that unreels on the support (11);

The described first tension force supervising device (10) comprises one first tension detector (101) and one first tension control roll (102);

Described basement membrane transmits successively through described support (11), described first tension detector (101) and described first tension control roll (102) of unreeling, and described first tension detector (101) is arranged on described unreeling between support (11) and described first tension control roll (102);

Described first tension detector (101) detects on it tension force of transmission basement membrane, as the PET film tension force that records departs from preset value, then adjusts the position of described first tension control roll (102), to adjust the tension force of described basement membrane.

15., it is characterized in that described pretreatment unit (2) comprises a dust cleaning apparatus (21), a Destaticizing device (22) and one second tension force supervising device (20) as claim 1,7,8 or 12 described solar battery group backboard manufacturing installations;

The described second tension force supervising device (20) comprises one second tension detector (201) and one second tension control roll (202);

Described basement membrane transmits successively through described dust cleaning apparatus (21), described Destaticizing device (22), described second tension control roll (202) and described second tension detector (201);

Described second tension detector (201) detects on it tension force of the basement membrane of transmission, as the basement membrane tension force that records departs from preset value, then adjusts the position of described second tension control roll (202), to adjust the tension force of described basement membrane.

16., it is characterized in that described cooling system (5) comprises one group of air knife (51) and one group of chill roll (52) successively as claim 1,7,8 or 12 described solar battery group backboard manufacturing installations; Described air knife (51) is positioned at the top that described PET film applies cated that side, its with normal temperature air supercharging after-blow to described PET film;

The inside of described chill roll (52) is filled with the liquid of cooling usefulness, and described each chill roll (52) is tangent successively, and described PET film is successively through the traction and the extruding of described each chill roll (52), and in above-mentioned contact transmission course, described PET film is cooled.

17. solar battery group backboard manufacturing installation as claimed in claim 16 is characterized in that, described cooling system (5) comprises at least 3 chill rolls (52) and 4～8 groups of air knives (51);

Regulate the temperature of described chill roll (52) internal coolant, thereby adjust the temperature of corresponding chill roll (52), form multistage cooling.

18. as claim 1,7,8 or 12 described solar battery group backboard manufacturing installations, it is characterized in that, described wrap-up (6) comprises a double translation frame formula wrap-up (61) and one the 4th tension force supervising device (60), and described the 4th tension force supervising device (60) comprises one the 4th tension detector (601) and one the 4th tension control roll (602);

Described PET film transmits successively through described the 4th tension detector (601) and described the 4th tension control roll (602), transfers to described double translation frame formula wrap-up (61) subsequently and carry out the rolling cutting under the traction of described the 4th tension control roll (602);

Described the 4th tension detector (601) detects on it tension force of the PET film of transmission, as the PET film tension force that records departs from preset value, then adjusts the position of described the 4th tension control roll (602), to adjust the tension force of described PET film.

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