CN102514342A - Film covering equipment and film covering method - Google Patents
Film covering equipment and film covering method Download PDFInfo
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- CN102514342A CN102514342A CN2011103790766A CN201110379076A CN102514342A CN 102514342 A CN102514342 A CN 102514342A CN 2011103790766 A CN2011103790766 A CN 2011103790766A CN 201110379076 A CN201110379076 A CN 201110379076A CN 102514342 A CN102514342 A CN 102514342A
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Abstract
The invention provides film covering equipment and a film covering method. The film covering equipment is used for pasting and covering a polyester film on a metal plate for obtaining a film covered metal plate, and the film covering equipment at least comprises a film covering unit, a pressure providing unit and a quenching unit, wherein the film covering unit consists of film covering rollers and auxiliary cooling rollers, the inside of the film covering rollers is hollow, the film covering rollers are communicated with cooling fluid systems, each film covering roller comprises a fixed roller and a movable roller, the number of the auxiliary cooling rollers is at least two, the auxiliary cooling rollers are respectively arranged at the outer side of the fixed roller and the movable roller and form expansion gaps, rubber layers with the surfaces subjected to polishing treatment are respectively attached on the surfaces of the fixed roller and the movable roller, the auxiliary cooling rollers have the surfaces subjected to mirror surface treatment, the quenching unit comprises an air cooling device and a water cooling groove which are in sequential arrangement in the film covered metal plate transmission direction. The invention also provides the film covering method. According to the technical scheme provided by the invention, the bonding-agent-free film covered metal plate with the firmly bonded polyester films and base plates can be prepared without adopting bonding agents.
Description
Technical field
The present invention relates to a kind of equipment for coating film and film covering method, relate in particular to a kind of equipment for coating film and film covering method that is used for metallic plate is carried out overlay film.
Background technology
At present; Characteristics such as metal material is hard with its good leak tightness, quality, good springiness, the resistance photosensitiveness is good, gas barrier property is good, than packaging material such as plastics, paper, glass, at packaging field always in occupation of critical role; Traditional metal packing material adopts spraying coating process resin bed in the coating of metal can inner surface to process; Yet in this preparation technology, have the toxic solvent volatilization, and the low molecular migration thing in the coating can influence the safety of the food of pack, while spraying equipment and complex process; Need to consume a large amount of scarce resources, cost is expensive.
In order to address the above problem; People have developed polyolefin film (for example PE film, PP film) has been passed through the film coating technique of resin bonded laminate with polyolefin film and metallic plate applying under low temperature environments; But because mostly polyolefin film is low polymer, these low-molecular materials diffusion easily are exuded to film surface, therefore are not suitable for the direct contact material as Food & Drink; And polyolefin is fitted in the complex process on the metallic plate, cost is high.
Because polyester film has mechanical strength height, good in optical property, serviceability temperature is wide, barrier property is good, oil resistant, corrosion-resistant, characteristics such as cost is low, environmental protection and energy saving; People begin to attempt using polyester film to replace polyolefin film to paste to metallic plate and are used as packaging material; Yet, also do not use adhesive can polyester film directly be fitted on the metallic plate to prepare equipment for coating film and film covering method at present.
Summary of the invention
The present invention provides a kind of equipment for coating film, through overlay film unit and the quenching unit in this equipment, can realize not using adhesive directly to paste on the metallic plate polyester film, does not have the precoated metal of adhesive plate thereby prepare.
The present invention also provides a kind of film covering method; Through using above-mentioned equipment for coating film; Make polyester film pass through direct and metallic plate applying under high temperature, the hyperbaric environment, and then through sharply cooling manufacturing membrane and metallic plate well paste and do not contain the precoated metal plate of adhesive.
A kind of equipment for coating film provided by the invention is used under the adhesive-free condition, metallic plate being pasted polyester film to obtain the precoated metal plate, and said equipment for coating film comprises that at least overlay film unit, pressure provide unit and quenching unit; Wherein
Said overlay film unit constitutes by inner hollow and with the overlay film roller and the auxiliary chill roll of cooling fluid system connectivity; Said overlay film roller comprises fixed roll and action roller; And can the overlay film of realizing under the unit drives metallic plate be provided at pressure; Said auxiliary chill roll is at least two, is arranged at the outside of fixed roll and action roller respectively and forms the expansion clearance, just contacts with auxiliary chill roll when said expansion clearance is set to fixed roll and action roller expanded by heating;
All with the glue-line of surface through polishing, said auxiliary chill roll has the surface through mirror process for said fixed roll and action roller surface;
Said quenching unit comprises air cooling equipment and the water-cooling groove that sets gradually along precoated metal plate direction of transfer, and said air cooling equipment has precoated metal plate transmission passage.
In equipment for coating film of the present invention; Fixed roll in the said overlay film unit and action roller are used for providing under the unit drives on the metallic plate that polyester film is fitted to heating at pressure processes precoated metal plate first product; Auxiliary chill roll in the said overlay film unit is used for contacting with action roller with fixed roll during with the action roller expanded by heating at fixed roll, and auxiliary fixed roll is controlled its surperficial temperature with action roller.Further, said auxiliary chill roll can through up and down movably frame be installed in the outside of said fixed roll and action roller and form the expansion clearance, be used to realize to control more accurately the contact of said auxiliary chill roll and said fixed roll and action roller or separate.Air cooling equipment in the said quenching unit is this area air cooling equipment commonly used.Said cooling fluid system can be a cooling circulating water system.Said polishing, mirror process (also can be ultra mirror process) are this area conventional treatment means, as long as make the glue-line surface not have lines, and assorted trace, the surface quality that does not influence the polyester film that pastes gets final product.
In another specific embodiment of the present invention, said pressure provides the unit to comprise that two covers move hydraulic means, and said mobile hydraulic means is connected with said action roller.The pressing that said mobile hydraulic means is used to drive said action roller and fixed roll with separate.In an embodiment of the invention, said pressure provides two covers of unit to move fore side and transmission side that hydraulic means is distributed in action roller respectively, is used to make pressure maintenance balance radially on the fixed roll.Further, said mobile hydraulic means is made up of oil cylinder, turbine and worm leading screw and variable-frequency motor.
In equipment for coating film of the present invention; Said equipment for coating film also comprises at least one cover exhibition film unit and drying unit; Said exhibition film unit is used for the polyester film expansion and is transported to the overlay film unit, and said drying unit is used for the precoated metal plate from quenching unit is carried out drying.Further, said drying unit comprises squeezing water and the drying unit that sets gradually along precoated metal plate direction of transfer.Said squeezing water can be this area squeeze roll commonly used.Said drying unit for example can be this area heated-air drying equipment commonly used.In a specific embodiment of the present invention; Said equipment for coating film comprises two cover exhibition film units; Be symmetricly set in the both sides of said overlay film unit, be used for overlay film is carried out on the metallic plate two sides simultaneously, and said exhibition film unit comprise out film machine, jockey pulley, film slewing rollers, nip rolls; And useless film collection apparatus, the wherein said film machine of opening comprises the inflatable axle.When above-mentioned exhibition film unit is worked; Drive the film machine one volume polyester film is opened, through jockey pulley, film slewing rollers, nip rolls, and useless film collection apparatus launches polyester film; Make it treating the smoothly motion smoothly of precoated metal plate both sides, get into the overlay film unit and treat that the precoated metal plate pastes.
In an embodiment of the invention, the roller of said fixed roll and action roller footpath is identical, and the roller footpath of said auxiliary chill roll and the roller of fixed roll or action roller are directly than being 1: 3-4.The glue-line of said fixed roll and action roller adhering on surface can be silastic-layer; Thickness is 10-15mm; The apparent mass on the overlay film roller surface that said glue-line is used to provide good; The overlay film roller is to the harmful effect of precoated metal panel products surface quality in the overlay film process to reduce, and therefore said glue-line should be the glue-line that handle through fine finishining on the surface, and for example: the surface is through the glue-line of polishing.Simultaneously because auxiliary chill roll and overlay film roller can directly contact with polyester film when polyester film applying metallic plate, so the surface of said auxiliary chill roll should be the surface through mirror process, is preferably the chrome-plated surface through mirror process.
The present invention also provides a kind of film covering method, utilizes above-mentioned equipment for coating film, and said method comprises:
1) with the polyester film that is unfolded and treat that the metal heating plate of overlay film is delivered between the fixed roll and action roller of overlay film unit simultaneously; Starting pressure provides the unit simultaneously; Drive the overlay film roller and polyester film is fitted to processes precoated metal plate first product on the metallic plate, and in said process, be 120-150 ℃ through feeding cooling fluid control overlay film roll surface temperature to overlay film roller and auxiliary chill roll inner chamber;
2) air cooling equipment through quenching unit is with water-cooling groove and by sharply cooling successively with made precoated metal plate first product, and to control said rapid cooling velocity be 70～80 ℃ of temperature reductions each second.
In said method; Can make polyester film handle flattened state through said exhibition film unit, further, can make the tension force that has 80-100N on the said polyester film through said exhibition film unit; In a specific embodiment of the present invention; Making polyester film handle flattened state through said exhibition film unit comprises: under the inflatable axle unaerated state in driving the film machine, earlier polyester film is rolled onto on the inflatable axle, is the inflation of inflatable axle then; Volume polyester film above that is fixed on the inflatable axle; Then said polyester film is extended to said useless film collection apparatus through jockey pulley, film slewing rollers, nip rolls successively, part polyester film (not pasting the polyester film to metallic plate) is wrapped on the said useless film collection apparatus, can make useless film collection apparatus collect suitable polyester film (not pasting polyester film) more as required to metallic plate; Thereby make polyester film to useless film collection apparatus, be in flattened state, and keep suitable tension force from driving the film machine.
Provide under the unit drives on the metallic plate that polyester film is fitted to heating at pressure through said overlay film unit and to process precoated metal plate first product; Sharply cool off then and comprise: when the metallic plate that heats continues to pass through between the action roller and fixed roll of said overlay film unit; Starting pressure provides the unit; Under it drove, polyester film and metallic plate carried out pressing, fitted on the metallic plate after the side fusing of polyester film near metallic plate; Promptly process precoated metal plate first product; Make this precoated metal plate first product promptly get into quenching unit then and sharply cool off (under the drive of constantly passing the metallic plate between action roller and the fixed roll, said action roller and fixed roll constantly rotate, and precoated metal plate first product gets into quenching unit by sharply cooling under action roller and fixed roll turning effort).
Further, above-mentioned precoated metal plate first product can be further through the dry precoated metal plate that obtains of said drying unit after sharply cooling off.
In the method for the invention, said polyester film for example can be the polyester film of the middle record of patent 102108193A or 102070882A, and this metallic plate for example can be selected from the common metal in mental package field, like steel plate, chrome plating and aluminium alloy plate.
The inventor gropes to find that when the overlay film roll temperature was lower than 120 ℃, the polyester film apparent mass that pastes was defective; When the overlay film roll temperature surpasses 150 ℃; The silicon rubber on overlay film roller surface is warmmer, under the effect of pressure, and the polyester film that melts away on overlay film roller surface is bonding easily; Compound film quality is affected, so the temperature that should control the overlay film roller in the method for the invention is between 120-150 ℃.Because the influence of the metallic plate (temperature is generally about 240 ℃) that is heated; When the metallic plate of polyester film and heating is fitted; The temperature on overlay film roller surface rises very fast; Though the recirculated water that its inside is connected with can be taken away a part of heat, the temperature that also is not enough to control overlay film roller surface is assisted overlay film roller surface cooling so also need be arranged on the auxiliary chill roll of overlay film roller top and the bottom between 120-150 ℃.Before the metallic plate rising of temperature owing to heating of overlay film roller; Said auxiliary chill roll surface does not contact with the surface of overlay film roller; Rising along with the temperature of overlay film roller; The roller footpath of overlay film roller makes auxiliary chill roll surface can contact with the surface of overlay film roller to help the overlay film roller strap to walk its surperficial heat owing to the expanded by heating of overlay film roller becomes greatly.
Scheme of the present invention has following advantage:
1, the overlay film unit in the equipment for coating film of the present invention can be implemented under the high temperature polyester film directly pasted and obtains precoated metal plate first product on the metallic plate; Quenching unit can realize sharply cooling off this precoated metal plate first product; Finally polyester film can be made and metallic plate well pastes; And the precoated metal plate that does not contain adhesive has overcome traditional precoated metal board device and can't be implemented under the situation that does not have adhesive and directly polyester film is fitted to the defective on the metallic plate;
2, film covering method of the present invention; Simple to operate, production process is not used adhesive, does not have the volatilization of hazardous solvent; Reduced pollution to environment; And the precoated metal panel products sanitary safe of preparing can overcome the precoated metal plate that contains adhesive that is obtained by traditional precoated metal plate production equipment and technology and be not suitable for direct problem as food, beverage packets package material directly as the packaging material that meet the food beverage industry requirement.
Description of drawings
Fig. 1 is the sketch map of the equipment for coating film of embodiment 2.
Fig. 2 is the enlarged drawing of Q part in the sketch map of equipment for coating film of embodiment 2.
Fig. 3 be the A of Fig. 1 to view, shown the sectional view of the jockey pulley of exhibition film unit in the equipment for coating film of embodiment 2.
Fig. 4 is the B-B view of Fig. 2, has shown the sectional view of the auxiliary chill roll of overlay film unit in the equipment for coating film of embodiment 2.
Fig. 5 is the C-C view of Fig. 2, has shown the sectional view of the fixed roll of overlay film unit in the equipment for coating film of embodiment 2.
Fig. 6 is the D-D view of Fig. 1, has shown the sectional view of the airduct of air cooling equipment in the equipment for coating film of embodiment 2.
Fig. 7 is the E-E view of Fig. 1, has shown the sectional view of water-cooling groove in the equipment for coating film of embodiment 2.
Main description of reference numerals:
1 die sinking machine, 2 jockey pulleys
3 film slewing rollers, 4 nip rolls
5 action rollers, 5 ' fixed roll
6 auxiliary chill roll 8 polyester films
7 chrome platings (TFS), 10 workbench
9 move hydraulic means 12 ground levels
11 useless film collection apparatus 14 water-cooling grooves
13 air cooling equipments, 16 slewing rollers
15 squeezing waters, 21 spindle noses one
17 heated-air drying equipment, 23 rollers
22 axillares, one 25 axillares two
24 glue-lines, 27 handles
26 spindle noses, 2 30 rollers
29 airducts
The specific embodiment
Further specify the technical scheme of the embodiment of the invention below in conjunction with accompanying drawing and specific embodiment.
Embodiment 1 precoated metal board device of the present invention.
Equipment for coating film of the present invention is used under the adhesive-free condition, metallic plate being pasted polyester film to obtain the precoated metal plate, and said equipment for coating film comprises that at least overlay film unit, pressure provide unit and quenching unit; Wherein said overlay film unit constitutes by inner hollow and with the overlay film roller and the auxiliary chill roll of cooling fluid system connectivity; Said overlay film roller comprises fixed roll and action roller; And can the overlay film of realizing under the unit drives metallic plate be provided at pressure; Said auxiliary chill roll is at least two, is arranged at the outside of fixed roll and action roller respectively and forms the expansion clearance, just contacts with auxiliary chill roll when said expansion clearance is set to fixed roll and action roller expanded by heating; All with the glue-line of surface through polishing, said auxiliary chill roll has the surface through mirror process for said fixed roll and action roller surface; Said quenching unit comprises air cooling equipment and the water-cooling groove that sets gradually along precoated metal plate direction of transfer, and said air cooling equipment has precoated metal plate transmission passage.
The method of using the said equipment to carry out overlay film comprises:
1) with the polyester film that is unfolded and treat that the metal heating plate of overlay film is delivered between the fixed roll and action roller of overlay film unit simultaneously; Starting pressure provides the unit simultaneously; Drive the overlay film roller and polyester film is fitted to processes precoated metal plate first product on the metallic plate, and be 120-150 ℃ through feeding cooling fluid control overlay film roll surface temperature to overlay film roller and auxiliary chill roll inner chamber;
2) air cooling equipment through quenching unit is with water-cooling groove and by sharply cooling successively with made precoated metal plate first product, and to control said rapid cooling velocity be 70～80 ℃ of temperature reductions each second.
The equipment for coating film of present embodiment is produced the precoated metal plate can be under the condition of adhesive-free; Provide through overlay film unit in the equipment for coating film and quenching unit and to make metallic plate and polyester film can well paste the surface quality condition of needed temperature, pressure and polyester film; Having overcome traditional precoated metal board device can't be implemented under the situation that does not have adhesive and directly polyester film is fitted to the defective on the metallic plate; Avoided poisonous and hazardous adhesive volatilization, reduced pollution environment.
Can find out that from Fig. 1-2 the equipment for coating film of present embodiment comprises: be arranged on exhibition film unit, overlay film unit on the workbench 10, pressure provides the unit, and is successively set on quenching unit and drying unit under the workbench 10 along precoated metal plate direction of transfer;
Said overlay film unit constitutes by inner hollow and with the overlay film roller and the auxiliary chill roll 6 of cooling fluid system connectivity; Said overlay film roller is divided into fixed roll 5 ' and action roller 5, said auxiliary chill roll 6 be separately positioned on fixed roll 5 ' and action roller 5 the upper and lower the outside and form the expansion clearance, said expansion clearance just contacts with auxiliary chill roll when being set to fixed roll 5 ' with action roller 5 expanded by heating; Two cover exhibition film units are arranged in the equipment for coating film of present embodiment; Said exhibition film unit comprises out film machine 1, jockey pulley 2, film slewing rollers 3, nip rolls 4, and useless film collection apparatus 11; The wherein said film machine 1 of opening comprises the inflatable axle; Two cover exhibition film units are symmetricly set in the both sides of overlay film unit respectively, are used to launch said polyester film, make the equipment for coating film of present embodiment to paste polyester film in the metallic plate both sides.
In above-mentioned equipment for coating film; The action roller 5 of said overlay film roller provides the unit to be connected with said pressure; Said pressure provides the unit to comprise and moves hydraulic means 9; It is made up of oil cylinder, turbine and worm leading screw and variable-frequency motor, and said mobile hydraulic means 9 is used to drive the pressing of said action roller 5 and fixed roll 5 ' or separate.Said action roller 5 is gone up with the silastic-layer of surface through polishing with fixed roll 5 '; Said glue-line has 15mm thickness; Said auxiliary chill roll 6 has the chrome-plated surface through mirror process; The action roller 5 of said in the present embodiment overlay film roller and the diameter of fixed roll 5 ' are 560mm, and the diameter of said auxiliary chill roll is 150mm.
Said quenching unit comprises the air cooling equipment 13 and water-cooling groove 14 that sets gradually along precoated metal plate direction of transfer;
Said drying unit comprises the squeezing water 15 and heated-air drying equipment 17 that sets gradually along precoated metal plate direction of transfer.Said squeezing water 15 is made up of two squeeze roll (not shown) of placing axisymmetricly.
When using said equipment for coating film to prepare adhesive-free precoated metal plate, the water-cooling groove 14 of said equipment, squeezing water 15 can be arranged on ground below 12.
The following specifically describes the process of using above-mentioned equipment for coating film adhesive-free precoated metal prepared according to the methods of the invention plate, wherein metallic plate is a chrome plating, and polyester film is the thick polyester film of 14-30um:
1) make polyester film handle flattened state through said exhibition film unit; And make the tension force that has 80-100N on the said polyester film; Comprise: under the inflatable axle unaerated state in driving film machine 1, earlier polyester film 8 is rolled onto on the inflatable axle, is the inflation of inflatable axle then; Volume polyester film 8 above that is fixed on the inflatable axle; Then with said polyester film 8 successively through jockey pulley 2, film slewing rollers 3, nip rolls 4, pass between the action roller 5 and fixed roll 5 ' of said overlay film unit, extend on the useless film collection apparatus 11 of said useless film take-up unit; Part polyester film (not pasting the polyester film to chrome plating) is wrapped on the said useless film collection apparatus 11; Can make useless film collection apparatus 11 collect suitable polyester film (not pasting polyester film) more as required, thereby make film to useless film collection apparatus 11, be in flattened state, and keep the tension force of 80-100N from driving film machine 1 to chrome plating.
2) precoated metal plate first product is processed in said overlay film unit on the chrome plating 7 that pressure provides the polyester film that will be in flattened state under the unit drives to fit to heating; The said overlay film roll surface temperature of said auxiliary chill roll assist control through in the overlay film unit is 120-150 ℃; And sharply cool off through quenching unit; And comprise: in the overlay film roller of inner hollow and auxiliary chill roll 6, feed recirculated water through the drying unit drying; (heating-up temperature of chrome plating should surpass the polyester film fusing point when the chrome plating 7 that heats then; And can make the side fusing of polyester film near chrome plating; And polyester film does not melt away from the other side of chrome plating) when continuing to pass through between action roller 5 and the fixed roll 5 ' of said overlay film unit; Start said mobile hydraulic means 9, said action roller 5 and fixed roll 5 ' pressing under it drives, and then the polyester film 8 that is positioned between action roller 5 and the fixed roll 5 ' is fitted to obtain overlay film chrome plating first product with chrome plating 7; Making this overlay film chrome plating first product promptly get into quenching unit then sharply cools off (under the drive of constantly passing the chrome plating 7 between action roller 5 and the fixed roll 5 '; Said action roller 5 gets into quenching unit with constantly rotation of fixed roll 5 ', overlay film chrome plating first product down in action roller 5 and fixed roll 5 ' turning effort), and to control said rapid cooling velocity be 70～80 ℃ of temperature reductions each second; Carry out drying through the squeezing water 15 of rapid cooled overlay film chrome plating first product in said drying unit with heated-air drying equipment 17 and can become stay-in-grade overlay film chrome plating, be provided with slewing rollers 16 between said squeezing water 15 and the heated-air drying equipment 17.The pressure that the said mobile hydraulic means 9 of control acts on the action roller in said method is 4.5-6T, and the surface temperature of said overlay film roller is 120-150 ℃ (recirculated water through overlay film roller and auxiliary chill roll 6 inside are connected with is controlled).
In said method; Paste to the said chrome plating 7 at film 8; Between said auxiliary chill roll 6 and the overlay film roller expansion clearance is arranged; Along with the rising of the temperature of overlay film roller, the roller of the overlay film roller back that directly is heated becomes big, makes auxiliary chill roll 6 surfaces can contact with the surface of overlay film roller with help overlay film roller strap and walks its surperficial heat.
Fig. 3 be the A of Fig. 1 to view, shown the sectional view of the jockey pulley of exhibition film unit in the present embodiment equipment for coating film, can find out that jockey pulley 2 is by two frame support.
Fig. 4 is the B-B view of Fig. 2; The sectional view that has shown the auxiliary chill roll 6 of overlay film unit in the present embodiment equipment for coating film; Wherein auxiliary chill roll 6 can move up and down under the effect of handle 27; With the contact of the auxiliary chill roll 6 of accurate control and overlay film roller or separate, further improve the performance accuracy of equipment for coating film of the present invention.
Fig. 5 is the C-C view of Fig. 2; The sectional view that has shown the fixed roll 5 ' of overlay film unit in the equipment for coating film of present embodiment; Wherein axillare 1, axillare 2 25 are used to support the overlay film roller of inner hollow, and the overlay film roller can be born from the pressure that moves hydraulic means, spindle nose 1; Spindle nose 2 26 is used for being connected with pedestal, the roller 23 outer glue-lines 24 that are lined with of overlay film roller.
Fig. 6 is the D-D view of Fig. 1, has shown the sectional view of air cooling equipment airduct in the equipment for coating film of present embodiment, and said air cooling equipment can be an Air cooler, through airduct 29 chrome plating that pastes polyester film is sharply cooled off.
Fig. 7 is the E-E view of Fig. 1, has shown the sectional view of water-cooling groove in the equipment for coating film of present embodiment, is connected with the recirculated water that did not have roller 30 in the water-cooling groove, sharply cools off in this recirculated water through the chrome plating that pastes polyester film of Air cooler cooling.
Preferred version as present embodiment; Comprise in the equipment of the adhesive-free precoated metal plate of present embodiment that two covers move hydraulic means 9; Be distributed in the fore side and transmission side of action roller respectively, make the pressure radially that acts on the overlay film roller fixed roll can keep balance, be provided with two fans in the Air cooler of present embodiment at least; The ventilating opening of this Air cooler links to each other with fan, and said ventilating opening is provided with the steam vent of an arranged radially at least.
Use device fabrication precoated metal plate of the present invention; The precoated metal plate of producing does not have adhesive; Can be directly as the packaging material that meet the food beverage industry requirement, the adhesive precoated metal plate that has overcome traditional precoated metal plate technology one-tenth product is not suitable for direct problem as food, beverage packets package material.
Claims (10)
1. an equipment for coating film is characterized in that, is used under the adhesive-free condition, metallic plate being pasted polyester film to obtain the precoated metal plate, and said equipment for coating film comprises that at least overlay film unit, pressure provide unit and quenching unit; Wherein
Said overlay film unit constitutes by inner hollow and with the overlay film roller and the auxiliary chill roll of cooling fluid system connectivity; Said overlay film roller comprises fixed roll and action roller; And can the overlay film of realizing under the unit drives metallic plate be provided at pressure; Said auxiliary chill roll is at least two, is arranged at the outside of fixed roll and action roller respectively and forms the expansion clearance, just contacts with auxiliary chill roll when said expansion clearance is set to fixed roll and action roller expanded by heating;
All with the glue-line of surface through polishing, said auxiliary chill roll has the surface through mirror process for said fixed roll and action roller surface;
Said quenching unit comprises air cooling equipment and the water-cooling groove that sets gradually along precoated metal plate direction of transfer, and said air cooling equipment has precoated metal plate transmission passage.
2. equipment for coating film according to claim 1; Wherein, Said equipment for coating film also comprises at least one cover exhibition film unit and drying unit, and said exhibition film unit is used for the polyester film expansion and is transported to the overlay film unit, and said drying unit is used for the precoated metal plate from quenching unit is carried out drying.
3. equipment for coating film according to claim 2, wherein, said drying unit comprises squeezing water and the drying unit that sets gradually along precoated metal plate direction of transfer.
4. equipment for coating film according to claim 2, wherein, said equipment for coating film comprises two cover exhibition film units, is symmetricly set in the both sides of said overlay film unit.
5. equipment for coating film according to claim 1, wherein, said pressure provides the unit to comprise that two covers move hydraulic means, and said mobile hydraulic means is connected with said action roller.
6. equipment for coating film according to claim 5, wherein, said mobile hydraulic means is made up of oil cylinder, turbine and worm leading screw and variable-frequency motor.
7. equipment for coating film according to claim 1, the glue-line of said fixed roll and action roller adhering on surface is a silastic-layer, thickness is 10-15mm.
8. equipment for coating film according to claim 1, the surface of said auxiliary chill roll are the chrome-plated surface through mirror process.
9. according to each described equipment for coating film of claim 1-8, the roller of said fixed roll and action roller footpath is identical, and the roller footpath of said auxiliary chill roll and the roller of fixed roll or action roller are directly than being 1: 3-4.
10. a film covering method utilizes each described equipment for coating film of claim 1-9, and overlay film prepares the precoated metal plate under the adhesive-free condition, and said method comprises:
1) with the polyester film that is unfolded and treat that the metal heating plate of overlay film is delivered between the fixed roll and action roller of overlay film unit simultaneously; Starting pressure provides the unit simultaneously; Drive the overlay film roller and polyester film is fitted to processes precoated metal plate first product on the metallic plate, and in said process, be 120-150 ℃ through feeding cooling fluid control overlay film roll surface temperature to overlay film roller and auxiliary chill roll inner chamber;
2) air cooling equipment through quenching unit is with water-cooling groove and by sharply cooling successively with made precoated metal plate first product, and to control said rapid cooling velocity be 70～80 ℃ of temperature reductions each second.
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| CN103832062A (en) * | 2014-03-13 | 2014-06-04 | 冯超 | Coating film pressing device |
| CN106166533A (en) * | 2016-08-03 | 2016-11-30 | 苏州市灵通玻璃制品有限公司 | A kind of glass covers cutose equipment |
| WO2018001179A1 (en) * | 2016-06-28 | 2018-01-04 | 宝山钢铁股份有限公司 | Method and device for producing film-coated metal plate |
| CN107825760A (en) * | 2017-10-27 | 2018-03-23 | 重庆恒茂包装制品有限公司 | Two-sided automatic film covering equipment and woven bag system of processing |
| CN108943732A (en) * | 2018-06-06 | 2018-12-07 | 常州欧邦机械有限公司 | A kind of preparation method of metal film coated plate |
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