CN102514347A - Heat compounding technique and apparatus of BOPET film and tin-free steel plate - Google Patents
Heat compounding technique and apparatus of BOPET film and tin-free steel plate Download PDFInfo
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- CN102514347A CN102514347A CN2011104255379A CN201110425537A CN102514347A CN 102514347 A CN102514347 A CN 102514347A CN 2011104255379 A CN2011104255379 A CN 2011104255379A CN 201110425537 A CN201110425537 A CN 201110425537A CN 102514347 A CN102514347 A CN 102514347A
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Abstract
The invention provides a heat compounding technique of a BOPET film and a tin-free steel plate,which comprises the steps of: uncoiling the steel plate by an uncoiling machine, preheating the steel plate to a set temperature by a preheating machine set, and high temperature heat compounding the preheated steel plate with the BOPET film through a hot pressing device, and coiling the heat compounded steel plate by a coiling machine. The invention also provides a heat compounding apparatus of BOPET film and tin-free steel plate, wherein the steel plate is uncoiled by the uncoiling machine and is conveyed to the preheating machine set to be preheated, and the preheated steel plate is heat compounded with the BOPET film by the hot pressing device. The heat compounding technique and apparatus of BOPET film and tin-free steel plate provided by the invention has the advantages of compounding a plastic film on the surface of the steel plate in an efficient, environmental friendly and low-cost manner, the production process is environmental friendly, the product has better erosion resistance, and no toxic low molecular compound is residual, so that the invention satisfies the low-carbon and environmental friendly conception of mass production in the modern industry.
Description
Technical field
The present invention relates to the hot composition process and the equipment of a kind of BOPET film and tin free steel sheet, especially at high temperature BOPET film and tin free steel sheet are carried out the compound Processes and apparatus of heat.
Background technology
Current, China's canned food adopts tinplate to do base material more, and at spraying inside and outside coating, to intercept the corrosion to tank body of food, oxygen.Tinplate is the sheet metal at electroplating surfaces with tin, and it has had the history in more than 100 year as mental packages such as food.This inner face that uses tinplate to make the packing jar of base material also is that the surperficial used coating of direct contact food is base-material with epoxy resin, and epoxy resin often contains harmful material bisphenol-A.There is very big harm in bisphenol-A to the human reproductive system, if remain in the jar, then enters into human body probably and endangers the healthy of people.In addition, also possibly contain harmful substances such as melamine in the additive of coating that this paint can inner face uses.
And traditional food mental package jar is in process, for coating is coated to the metal surface; Need use a large amount of organic solvents in its processing technology; These organic solvents have part to be discharged into to cause in the atmosphere environmental pollution in process of production, and are jar inner in packing, though also have minimal residue through volatilization; Residual organic solvent finally can penetrate in the food and drink, and then is detrimental to health.This shows that there is very big hidden danger in existing food metal packing material for food security and health, must cause enough attention.
Simultaneously, owing to use a large amount of coating and other organic substance in the existing mental package jar production, cause the complex manufacturing of existing mental package jar and energy consumption high.
In sum, the producing process of existing tin plate food pot is complicated, has shortcomings such as harmful substances is residual, the production process environmental pollution is serious, energy consumption height.
Summary of the invention
Deficiency to the prior art existence; The present invention is through providing a kind of brand-new hot compound production technology and equipment by BOPET film and tin free steel sheet; Can thoroughly solve the problems such as the height that possibly be detrimental to health, pollutes and consume energy that exist in the prior art; When improving the quality of products, reducing pollution, also can reduce production costs, and can reduce and avoid harm health.The present invention realizes through following technical scheme:
On the one hand; Technology provided by the present invention comprises following steps; Said steel plate is preheating to design temperature with steel plate after the uncoiler uncoiling and through the preheating unit, it is compound that steel plate after the preheating and BOPET film carry out elevated temperature heat by hot-press arrangement, and the steel plate after heat is compound is by the winder rolling.
Preferably, said steel plate blows shower device via the inner compressed air of steel plate storage rack before the preheating and cleans.
Preferably, said compressed air uses pure air, and pressure is 2 ~ 5kg/cm
2, dew point is-50 ℃ ~-25 ℃.
Preferably, said steel plate surface of steel plate temperature after the preheating of preheating unit reaches 120 ~ 250 ℃.
Preferably, the temperature of the heater in the said preheating unit is 130 ~ 270 ℃, and the heating temperature difference is ± 1 ℃ ~ ± 3 ℃.
Preferably, the temperature resistant range of said hot-press arrangement is 180 ~ 250 ℃.
Preferably, said technology comprises also that to heat the steel plate after compound cools off, and said cooling device uses the low temperature clean compressed air, and said compressed-air actuated pressure is 2 ~ 5kg/cm
2, temperature is 10 ~ 15 ℃, dew point is-50 ℃ ~-25 ℃.
On the other hand; The hot equipment complex of BOPET film provided by the present invention and tin free steel sheet comprises uncoiler, preheating unit, hot-press arrangement and winder; Said steel plate is after the uncoiler uncoiling; Be sent to the preheating unit successively through deflector roll and carry out preheating, it is compound that the steel plate after preheating carries out heat via hot-press arrangement and BOPET film, and the steel plate after heat is compound is sent to winder through deflector roll and accomplishes rolling.
Preferably, said steel plate, is provided with compressed air and blows shower device surface of steel plate is cleaned after deflector roll is sent to the steel plate storage rack through the uncoiler uncoiling in the said steel plate storage rack.
Preferably, a plurality of deflector rolls moving up and down of said steel plate storage rack set inside store steel plate.
Preferably, said steel plate storage rack inside also is provided with compressed air and blows shower device so that steel plate is carried out surface clean.
Preferably, said preheating unit comprises the experimental process preheating device.Preferably, said experimental process preheating device uses the electromagnetic induction heating roller arrangement as heater.
Preferably, it is characterized in that said hot-press arrangement comprises plastic sheeting unreeling machine and pressing film roller, said pressing film roller is by up and down the hot pressing roller of pressing being formed.
Preferably, said plastic sheeting unreeling machine is provided with one or two.
Preferably, said hot-press arrangement also comprises chill roll, and said chill roll can be provided with one or more.
Preferably, said hot equipment complex also comprises said cooling device, and said cooling device is arranged on the back of hot-press arrangement, and the high temperature steel plate to heat after compound is lowered the temperature.
Preferably, said cooling device uses the low temperature clean compressed air to cool off.
Preferably, said hot equipment complex also comprises the said finished product storage rack that is arranged on behind the said cooling device, stores cooled steel plate at a plurality of deflector rolls moving up and down of said finished product storage rack set inside.
Preferably, said uncoiler and winder respectively are provided with a cover.
Preferably, said uncoiler is provided with more than two covers, and said uncoiler connects said laser welder at the back, after last coil plate uses up, by said laser welder the head of back one coil plate and the afterbody of last coil plate is welded.
Preferably; Said winder is provided with more than two covers, connects said cutting machine in the front of said winder, the back of said finished product storage rack, after a cover winder rolling is accomplished; Cut off steel plate by said cutting machine, follow-up steel plate links to each other with the winder of another set of sky and continues rolling.
By above-mentioned technical characterictic, can realize BOPET plastic sheeting and the compound technical purpose of tin free steel sheet heat.The present invention has following effectively effect at least:
1, product has good anti-corrosion;
2, production efficiency is high, and energy resource consumption is low, so production cost is lower;
3, do not have organic solvent emission in the production process, it is residual also not have little molecule harmful substance, and production process and product be environmental protection more all.
Description of drawings
Through reading the detailed description of non-limiting example being done with reference to following accompanying drawing, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 illustrates the integrated artistic and the equipment flowsheet of an embodiment of the present invention;
Fig. 2 illustrates the work sketch map of the steel plate storage rack of an embodiment of the present invention;
Fig. 3 illustrates the hot-press arrangement sketch map of an embodiment of the present invention.
Label declaration among the figure:
1 uncoiler
2 laser welders
3 steel plate storage racks
4 preheating units
5 electromagnetic induction heating rollers
6 hot pressing rollers
7 plastic sheeting unreeling machines
8 cooling devices
9 finished product storage racks
10 cutting machines
11 winders
12 compressed air
13 deflector rolls
14 chill rolls
Practical implementation
Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
Fig. 1 is integrated artistic and the equipment flowsheet sketch map of BOPET film of the present invention and tin free steel sheet hot composition process and a kind of embodiment of equipment.Be elaborated below in conjunction with the whole process of production of accompanying drawing of the present invention to an embodiment of the present invention.
Tin free steel sheet (Tin free steel, be called for short TFS), promptly the surface of cold-reduced sheet is without zinc-plated processing, but plates very thin chromium of one deck and chromium oxide through plating mode at surface of steel plate.Compare with tinplate, the TFS avirulence, environmental protection more, and TFS and film have better cohesive.The BOPET film is a biaxially oriented polyester film, has advantages such as intensity, good rigidly and hot strength are good.BOPET film and tin free steel sheet carry out hot compound pad pasting, can realize better composite effect, and environmental protection more.Certainly, though this patent title is the hot compound of BOPET film and tin free steel sheet, the protection domain of this patent is not limited in compound between BOPET film and the tin free steel sheet, selects these two kinds to carry out compound being merely of heat and reach better composite effect.
In Fig. 1, preferably, in an embodiment of the present invention, need the tin free steel sheet (TFS) of processing after uncoiler 1 uncoiling, to enter into steel plate storage rack 3 by the deflector roll transmission.It will be appreciated by those skilled in the art that in the present invention said steel plate is sent to each technological process by one or more deflector rolls after uncoiling, the number of said deflector roll is according to transmission direction, the transmission range decision of steel plate.This point is not main points of the present invention, in following literal, omits.Use deflector roll though with sketch map transmission is shown in the accompanying drawing, do not illustrate with label specially.
Steel plate storage rack 3 is the storage racks with special construction.Fig. 2 is a steel plate storage rack working state schematic representation.As shown in Figure 2; The a plurality of deflector rolls that can move up and down 13 of steel plate storage rack 3 set inside; Can control through the size that moves up and down and control displacement of control deflector roll 13 and to get into what of steel plate storage rack 3 light plate amounts, thereby reach the purpose of a certain amount of steel plate to be processed of temporary transient storage.Preferably, according to arts demand, said uncoiler 1 can be provided with one or more sets.Under the situation that many covers (more than 2 covers) uncoiler is set; Laser welder 2 need be set in the back of uncoiler 1; The effect of said laser welder 2 is: after a coil plate uses up; Suspend to transmit the steel plate of steel plate storage rack 3 fronts, the afterbody butt welding that manual type has used up steel plate through laser welder 2 with the head and the last volume of another coil plate.At this moment, the motion of steel plate storage rack 3 inside through deflector roll will before the steel plate that be stored in wherein be discharged into later process gradually, thereby guarantee that whole production line do not shut down.
, except that can temporarily storing, also dispose clean compressed air in the steel plate storage rack 3 and blow shower device 12 steel plate, can the floating ash of surface of steel plate be purged totally, guarantee that the surface of steel plate that enters into follow-up station does not have dust residual.Said compressed air uses the pure air of low temperature, and pressure is 2 ~ 5kg/cm
2, dew point is-50 ℃ ~-25 ℃.
Behind the compressed air purging, the steel plate of cleaning surfaces enters into preheating unit 4, and steel plate is carried out preheating.Since the uniformity coefficient that is heated of steel plate determined film and steel plate heat compound whether closely with firmly, whether press mold even, thereby determine the quality of final products.Therefore, how the surface of steel plate temperature precisely being controlled also is a vital step in the technology of the present invention.For guaranteeing that steel plate is heated evenly, preheating unit 4 of the present invention comprises a plurality of sub-preheating devices, and said sub-preheating device all adopts electromagnetic induction heating roller 5 to heat, and this also is a key point of the present invention.Select the electromagnetic induction heating roller that steel plate is heated following several advantage is arranged: the one, can realize good temperature control effect, the temperature of surface of steel plate can be controlled evenly can accomplish accurate control again; The 2nd, higher heating-up temperature can be realized, thereby steel plate required for the present invention and the compound temperature requirement of film surface can be satisfied; The 3rd, can not pollute to the steel plate behind cleaning-drying with to environment.Otherwise, if do not use the electromagnetic induction heating roller but adopt common warm-up mill, like the heat-conducting oil heating roller; In heating process, will certainly cause the leakage of heated oils; And pollute steel plate and environment, and cause final products can not be used for packaging for foodstuff, the more important thing is; Common warm-up mill does not reach combined temp required for the present invention yet, thereby causes hot compound failure.
Among the present invention, be used for the employed electromagnetic induction heating roll temperature of preheating heating steel plate and be controlled at 130 ~ 270 ℃, heat the temperature difference to be controlled at ± 1 ℃ ~ ± 3 ℃, can reach between 120 ~ 250 ℃ through surface of steel plate temperature after the preheating.Particularly, according to the thickness of required compound tin free steel sheet and the recombination velocity of technique initialization, the number and the surperficial heating-up temperature of the adjustment electromagnetic induction heating roller 5 that uses, thus realize controlling and adjusting the purpose of surface of steel plate temperature.Usually, in order to realize good composite effect, need to use one group of electromagnetic induction heating roller.The temperature of each electromagnetic induction heating roller is all set separately and is controlled; The heating-up temperature of operated by rotary motion electromagnetic induction heating roller in front is lower; The heating-up temperature that is arranged on the electromagnetic induction heating roller of back raises gradually, until reaching the final needed preheat temperature of technology.In one embodiment of the invention, as the tin free steel sheet of BOPET plastic sheeting and 0.2mm thickness is compound, when recombination velocity was 60m/min, the temperature after the surface of steel plate preheating was set at 160 ~ 170 ℃.When recombination velocity was 100m/min, the preheat temperature of surface of steel plate was set at 190 ~ 195 ℃.As the tin free steel sheet of BOPET plastic sheeting and 0.3mm thickness is compound, when recombination velocity was 100m/min, the temperature after the surface of steel plate preheating was set at 205 ~ 210 ℃.
About the structure and the operation principle of the employed electromagnetic induction heating roller in the warm-up phase, existing elaboration is in detail repeated no more at this in the existing patent.
Steel plate is after being preheating to design temperature, and it is compound by hot-press arrangement steel plate and plastic sheeting to be carried out elevated temperature heat.Hot-press arrangement comprises plastic sheeting unreeling machine 7 and pressing film roller, and said pressing film roller is two hot pressing rollers 6 to pressing up and down.At hot compound tense, by plastic sheeting unreeling machine 7 plastic sheeting is launched, it is compound through hot pressing roller 6 steel plate and plastic sheeting to be carried out hot pressing.Said hot pressing roller 6 is resistant to elevated temperatures rubber roll.Because the surface of steel plate temperature after preheating is higher, therefore, the temperature resistant range of said pressing film roller also will adapt with the surface of steel plate temperature.In one embodiment of the invention, used pressing film roller is selected the anti-silica gel roller of high temperature more than 250 ℃ for use.Because the technology of rubber roll is very ripe, it is not an innovative point of the present invention, so repeat no more at this.
Fig. 3 is that steel plate carries out the compound sketch map of heat through hot-press arrangement.The compound detailed process of plastic sheeting and steel plate hot pressing is following in an embodiment of the present invention: will ready two volume plastic sheetings through plastic sheeting unreeling machine 7 respectively from both direction with through the steel plate that being preheating to uniform temperature near, the extruding through two hot pressing rollers 6 is compound to plastic sheeting with the steel plate elevated temperature heat.Certainly, if only need a laminated film, then only need a plastic sheeting unreeling machine to provide plastic sheeting to get final product from a direction at steel plate.
Since hot pressing roller 6 in long-term and its surface temperature after the steel plate high temperature extruding of heat contacts basically near the surface temperature of steel plate; For prolonging its service life; Preferably, in an embodiment of the present invention, the opposite side that contacts with steel plate at hot pressing roller 6 is provided with chill roll 14.Not only can the surface of hot pressing roller 6 be lowered the temperature through said chill roll 14, can also prevent that the one side of plastic sheeting from pressing failure because of high-temperature fusion pyrogenicity simultaneously.It will be appreciated by those skilled in the art that chill roll 14 described herein can be provided with one or more according to concrete hot pressing temperature and technological requirement.
, hot-press arrangement realized the well compound of surface of steel plate and plastic sheeting after carrying out press mold to steel plate.In order to realize the better bond effect of steel plate and plastic sheeting, preferably, the device that the steel plate after compound is cooled off is provided also in one embodiment of the present of invention.In an embodiment of the present invention as shown in Figure 1, cool off through 8 pairs of surface of steel plate after heat is compound of said cooling device.The cooling device 8 same low temperature clean compressed airs that adopt are as cooling source, and said compressed-air actuated pressure is 2 ~ 5kg/cm
2, temperature is 10 ~ 15 ℃, dew point is-50 ℃ ~-25 ℃.Preferably, compressed air temperature is controlled at 10 ~ 12 ℃, realizing carrying out the good result of quench cooled through high temperature and the compound steel plate of plastic sheeting fusion, and then realization plastic sheeting and the steel plate applying effect that better bonds.
Preferably, in an embodiment of the present invention, finished product storage rack 9 is set in the back of said cooling device.As shown in Figure 1, the steel plate of the press mold after quench cooled enters into finished product storage rack 9.The structure of the structure of finished product storage rack 9 and foregoing steel plate storage rack 3 is unanimous on the whole, and unique difference is not comprise compressed air to blow shower device, and only the steel plate finished product after the compacting is stored.The inside of finished product storage rack 9 is provided with a plurality of deflector rolls that can move up and down equally, and what of steel plate storage rack 9 light plate amounts the size control that moves up and down and control displacement through the control deflector roll get into, thereby realizes storing the purpose of steel plate.This structure has had detailed elaboration in front, repeats no more at this.
Steel plate finished product behind the press mold that comes out from finished product storage rack 9 transmission carries out rolling by winder 11.In order to guarantee that technology produces continuously, preferably, 2 cover winders are set in an embodiment of the present invention, simultaneously, cutting machine 10 is set in the back of said finished product storage rack 9.After a cover winder rolling was accomplished, the port of export of finished product storage rack 9 promptly stopped action, and through moving up and down of its inner deflector roll, the steel plate finished product that front end is sent here is stored temporarily in wherein.And pass through cutting machine 10 steel plate is cut off, manual type is connected steel plate with the winder of another set of sky then, and begins to continue automatic winding.Certainly, according to concrete process condition, said winder can also be provided with more than 2 covers.
More than specific embodiment of the present invention is described.Need to prove that the present invention is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence flesh and blood of the present invention.
Claims (20)
1.BOPET the hot composition process of film and tin free steel sheet; It is characterized in that; Comprise following steps; Said steel plate is preheating to design temperature with steel plate after the uncoiler uncoiling and through the preheating unit, it is compound that steel plate after the preheating and BOPET film carry out elevated temperature heat by hot-press arrangement, and the steel plate after heat is compound is by the winder rolling.
2. technology as claimed in claim 1 is characterized in that, said steel plate blew shower device via the inner compressed air of steel plate storage rack and cleans before preheating.
3. technology as claimed in claim 2 is characterized in that, said compressed air uses pure air, and pressure is 2 ~ 5kg/cm
2, dew point is-50 ℃ ~-25 ℃.
4. technology as claimed in claim 1 is characterized in that, said steel plate surface of steel plate temperature after the preheating of preheating unit reaches 120 ~ 250 ℃.
5. technology as claimed in claim 1 is characterized in that, the temperature of the heater in the said preheating unit is 130 ~ 270 ℃, and the heating temperature difference is ± 1 ℃ ~ ± 3 ℃.
6. technology as claimed in claim 1 is characterized in that, the temperature resistant range of said hot-press arrangement is 180 ~ 250 ℃.
7. technology as claimed in claim 1 is characterized in that, also comprises to heat the step that the steel plate after compound cools off, and said cooling device uses the low temperature clean compressed air, and said compressed-air actuated pressure is 2 ~ 5kg/cm
2, temperature is 10 ~ 15 ℃, dew point is-50 ℃ ~-25 ℃.
8.BOPET the hot equipment complex of film and tin free steel sheet; Comprise uncoiler, preheating unit, hot-press arrangement and winder; It is characterized in that said steel plate is sent to the preheating unit successively through deflector roll and carries out preheating after the uncoiler uncoiling; It is compound that steel plate after preheating carries out heat via hot-press arrangement and BOPET film, and the steel plate after heat is compound is sent to winder through deflector roll and accomplishes rolling.
9. equipment as claimed in claim 8 is characterized in that, said steel plate, is provided with compressed air and blows shower device surface of steel plate is cleaned after deflector roll is sent to the steel plate storage rack through the uncoiler uncoiling in the said steel plate storage rack.
10. equipment as claimed in claim 9 is characterized in that, a plurality of deflector rolls moving up and down of said steel plate storage rack set inside store steel plate.
11. equipment as claimed in claim 8 is characterized in that, said preheating unit comprises the experimental process preheating device, and said experimental process preheating device uses the electromagnetic induction heating roller arrangement as heater.
12. equipment as claimed in claim 8 is characterized in that, said hot-press arrangement comprises plastic sheeting unreeling machine and pressing film roller, and said pressing film roller is by up and down the hot pressing roller of pressing being formed.
13. equipment as claimed in claim 12 is characterized in that, said plastic sheeting unreeling machine is provided with one or two.
14. equipment as claimed in claim 8 is characterized in that, said hot-press arrangement also comprises chill roll, and said chill roll is provided with one or more.
15. equipment as claimed in claim 8 is characterized in that, also comprises said cooling device, said cooling device is arranged on the back of hot-press arrangement, and the high temperature steel plate to heat after compound is lowered the temperature.
16. equipment as claimed in claim 15 is characterized in that, said cooling device uses the low temperature clean compressed air to cool off.
17. equipment as claimed in claim 8 is characterized in that, also comprises the said finished product storage rack that is arranged on behind the said cooling device, stores cooled steel plate at a plurality of deflector rolls moving up and down of said finished product storage rack set inside.
18. equipment as claimed in claim 8 is characterized in that, said uncoiler and winder respectively are provided with a cover.
19. equipment as claimed in claim 8; It is characterized in that said uncoiler is provided with more than two covers, said uncoiler connects said laser welder at the back; After last coil plate uses up, the head of back one coil plate and the afterbody of last coil plate are welded by said laser welder.
20. equipment as claimed in claim 8; It is characterized in that; Said winder is provided with more than two covers, connects said cutting machine in the front of said winder, the back of said finished product storage rack, after a cover winder rolling is accomplished; Cut off steel plate by said cutting machine, follow-up steel plate links to each other with the winder of another set of sky and continues rolling.
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| CN201110425537.9A CN102514347B (en) | 2011-12-19 | 2011-12-19 | Heat compounding technique and apparatus of BOPET film and tin-free steel plate |
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| CN201110425537.9A CN102514347B (en) | 2011-12-19 | 2011-12-19 | Heat compounding technique and apparatus of BOPET film and tin-free steel plate |
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| CN109913902A (en) * | 2019-04-28 | 2019-06-21 | 镇江慧诚新材料科技有限公司 | It is a kind of to prepare TiB using semicontinuous hot-press arrangement one-pass molding2The method of blocky cathode material |
| CN109913902B (en) * | 2019-04-28 | 2020-08-04 | 镇江慧诚新材料科技有限公司 | TiB prepared by one-step molding through semi-continuous hot-pressing device2Method for producing bulk cathode material |
| CN111304706A (en) * | 2020-03-13 | 2020-06-19 | 葛家玉 | Chromium-free tin plate and surface treatment method thereof |
| CN112048252A (en) * | 2020-08-26 | 2020-12-08 | 江苏鼎胜新能源材料股份有限公司 | Cold roofing that PET modified film prepared |
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