CN1181029A - Method and apparatus for coating a metal strip and the product thereof - Google Patents
Method and apparatus for coating a metal strip and the product thereof Download PDFInfo
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- CN1181029A CN1181029A CN 95197807 CN95197807A CN1181029A CN 1181029 A CN1181029 A CN 1181029A CN 95197807 CN95197807 CN 95197807 CN 95197807 A CN95197807 A CN 95197807A CN 1181029 A CN1181029 A CN 1181029A
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Abstract
A method and apparatus for extrusion coating both sides of a metal strip. A metal strip such as aluminium alloy strip, is moved through a pre-conditioner, two extrusion dies, a postheater and a cooling system. Both sides of the strip are coated with thin coatings of thermoplastic polymers. The coated metal strip is useful for containers, such as cans and can ends, as well as for automobiles, appliance, aerospace, construction and electrical devices.
Description
The present invention relates to and be used for polymer coating is coated to method and apparatus on the bonding jumper, specifically, the present invention relates to the method for both sides of thermoplastic resin coating aluminum strip of self compaction machine and extrusion die of being used for, said extruder and extrusion die are positioned to and thermoplastic resin can be coated onto on the two opposite sides of aluminum strip.Product of the present invention is the bonding jumper such as aluminium, and this bonding jumper has the thin polymer coating and multiple application is arranged on its both sides, but this bonding jumper is particularly suitable for the packaging applications such as potting and tank body.
Known on the one or both sides of sheet metal or bonding jumper the coating thermoplastic resin can improve corrosion resistance, mouldability, outward appearance or other character of metal material.Can use such as roller coat, anti-roller coat, spraying, electropaining, powder coating and stacked several different methods apply said coating.Bonding jumper after the coating can be used for the application such as interior jar and potting, paper tinsel box, the storage device that lid is arranged, instrument, electronic equipment, building, aerospace or motor vehicle body.
People's such as Heyes United States Patent (USP) discloses the method that is used to form the layered metal plate No. 5093208, and wherein, go up so that with amorphous form this film is bonded on the metallic plate on one or two surface that prefabricated thermoplastic polyester's film is clung to metallic plate.The metallic plate of uncoated is heated to temperature more than the polyester film fusing point, and, under pressurized state with described thin film cladding to the metallic plate to form a kind of stacking material.Then, this stacking material is heated to more than the described film fusing point impelling described plastic film to be adhered on the metal, and, promptly make the stacking material quenching to the temperature below the glass transition point of polyester to form amorphous polyester.Said quenching is undertaken by making the aforementioned layers laminate materials pass a water curtain.
European patent application book with the name application of Taiyo iron company discloses for No. 0067060 a kind of by directly thermoplastic resin being expressed to the method for producing coating metal panel on the generating surface of metallic plate.According to this application for patent, resin-shaped is not being become under the situation of independent film, the resin of fusion directly is coated onto on the metallic plate from extrusion die.The thickness of film can preferably be reduced to 35 to 5 microns less than 50 microns.Described application for patent is pointed out: form this step of independent film owing to omitted, so, can reduce the cost of producing plating.Suitable thermoplastic resin as coating for metal surfaces comprises multiple other resin cited in polyolefin, acrylic resin, polyester, polyamide, polyvinyl chloride and the above-mentioned disclosed patent specification.Can apply said resin according to the mode of the single or multiple lift that constitutes by identical or different resin.Above-mentioned application for patent discloses resin only has been coated onto on the side of bonding jumper.
Need a kind of follow-on method so that thin polymer coating is coated on the both sides that are applicable to the bonding jumper of using such as packing.Need a kind of like this method, it can be bonded in or be fused to bonding jumper tightly with polymer, thereby described polymer delamination can not occur when forming bonding jumper subsequently or using the product of being made by this bonding jumper.
The invention provides a kind of like this method, it is used for thermoplastic polymer's resin is coated onto on the both sides of bonding jumper so that form the plating bar that is applicable to packing and other application.
Therefore, the purpose of this invention is to provide and a kind of mylar is adhered to improved method on the bonding jumper both sides.
Can understand and understand above and other objects of the present invention and advantage more completely with reference to following explanation and the accompanying drawing relevant with explanation.
Fig. 1 is the summary sectional side view of an embodiment of system of the present invention;
Fig. 2 is the summary sectional side view of the part of another embodiment of the present invention;
Fig. 3 and Fig. 4 are the summary sectional side views of further embodiment of this invention;
Fig. 5 is the part sectioned view of bonding jumper and extrusion die among the Fig. 4 that amplifies, and it shows resin is coated onto on the bonding jumper;
Fig. 6 to Figure 14 is the summary sectional side view of other embodiment of the present invention.
Description of drawings such system, this system is used for applying when first winding stand moves on second winding stand at bonding jumper the both sides of this bonding jumper, can be wound on second winding stand after metal is coated.Specifically with reference to Fig. 1, aluminum alloy bar 10 from winding stand 12 launch, around jockey pulley 14 move, on roller 16, move vertically upward, then from roller 16 to moving down coated equipment.Backing roll 18 is used to make bonding jumper 10 to remain in flat form when moving past backing roll 16.
When bonding jumper 10 when roller 16 moves down, heater 20 is heated to the temperature that is close to or higher than the fusing point that will be coated onto the polymer on the bonding jumper with this bonding jumper earlier.In the embodiment shown in fig. 1, described heater is an induction heater, but also can use other heater or preconditioner such as flame treatment, infrared ray, plasma and/or corona discharge separately or in the mode of combination.Can or only use fired heater to raise the efficiency (improving the bonding and efficiency of heating surface) in the mode of tandem (one on one side) in a side.Can also use because of previous operation such as rolling or heat treatment still remains the winding stand 12 of heat, so that the needs that minimizing even elimination are heated with heater 20.According to multiple factor mainly is according to will being coated onto the difference of the concrete polymer on the bonding jumper, before the coating thermoplastic material with METAL HEATING PROCESS temperature extremely typically in the scope of about 121 °～260 ℃ (250 °～500).
Two independently extrusion coating systems 21 and 31 are provided, and they are used for the thin bar of the thermoplastic polymer such as mylar is coated onto two surfaces of the bonding jumper after the heating.System 21,31 all be located at induction heater 20 under.Extrusion coating system 21,23 respectively comprises an extruder, and it is used for providing via the compressing tablet mould 22,23 that has narrow exit slot the polymer-extruded thing of fusion, passes the thin bar 24,34 of extrudate of three roll assemblies with formation.In addition, also can be by an extruder by transfer tube or other manifold to the extrusion die feed.
First roller the 26, the 36th of system 21,31, location and stack, they remain on such temperature, and this temperature helps polymer-extruded thing gummed or is bonded on the polished surface of described stack.According to the difference of employed resin, be used for the above-mentioned purpose temperature typically in about 120 ° to 180 ℃ (248 °-356) scopes.The superficial velocity of roller 26,36 is faster than the speed of the extrudate of leaving mould 22,32 basically, thereby this polymer can be calendered to the thickness that has reduced.Rolling velocity compares in 5: 1 to 40: 1 scope with the typical rate of extrudate speed.From the resin of extruder generally be about 0.127-0.635mm (0.005-0.025 inch) and be calendered to about 0.0076-0.038mm (0.0003-0.0015 inch) minimizing thickness.
Bonding jumper 11 after the coating continues to move past vertically downward or move through secondary heater 42, this heater particularly is heated to such temperature with metal or plastics or with metal and plastics at the interface equably between metal and plastics, this temperature do not reduce basically or can be to bonding jumper or bonding jumper on make under the required character of the plastic coating situation about having a negative impact polymer-bonded in bonding jumper.Described predetermined temperature depends on will be as the particular polymers material of coating coating, greatly in the scope of 200 ° to 260 ℃ (392-500).Secondary heater 42 is an Induction heater preferably, and it is known in present technique.In addition, heater 42 can be thermal convection current stove or infrared heater.
In case leave secondary heater 42 and when vertical downward direction continue to move, the bonding jumper 11 after the coating can be cooled off rapidly by cascade 44, water curtain or other suitable cooling device.This cooling must make the temperature of aforementioned composite construction reduce to enough low temperature, so that the bonding jumper after making coating under the situation that can not have a negative impact to coating or metal turns to around roller.In the best approach, composite construction was cooled to below about 40 ℃ (104 °F) before touching roller 48 with mylar coating aluminium alloy such as alloy 3004 is metal can sheet material.In this most preferred embodiment, cooling is carried out enough soon, thereby the polyester coatings on the aluminium alloy can solidify to be essentially amorphous form.The cooling velocity that realizes this point depends on said polyester.Flow through the coating afterwards temperature and the volume change of the cooling water flow of bonding jumper by control, can control said cooling velocity.
In the embodiment shown in fig. 1, the bonding jumper after the coating moved past the groove 46 such as tank and walks around roller 48 and 50 at the opposite two ends of this groove before the coating drying.Described tank can be realized aforementioned cooling procedure.
Bonding jumper 11 after the coating preferably moves through a drying system 52 vertically upward from tank 46, so that removed remaining aqueous vapor from bonding jumper before reeling again.Drying system 52 generally can comprise warm-air drier.Then, the composition metal bar moves to through roller 54,56 and 58 and recoils device 60.Above-mentioned drying system can comprise that unshowned gatherer is to adapt to roll coil of strip variation or silver lap variation and to comprise the device that is used for smoothing this metal after having applied metal.Said system also preferably includes unshowned trimmer, and these trimmers are used to repair the edge of coating back bonding jumper 11 or remove any polymer that refers to extend beyond metal edge.Described trimmer can along such as tightly be positioned at be coated onto fluoropolymer resin on the bonding jumper after, after the spray cooler or the bonding jumper path after the drying system is positioned diverse location.
The difference of the purposes that will have according to aluminum strip, the coated aluminum strip of the present invention can be constituted and different hardness arranged by multiple alloy.Some typical aluminium alloy that is suitable for constituting potting and tank body comprises medium-hard aluminium association (AluminumAssociation) alloy 5042,5182 and 3004 comprising H-14, H-19 and H-39 hardness.It is thick that said bonding jumper is generally 0.1778-0.356mm (0.007 to 0.014 inch).
According to the present invention, available such as polyester multiple thermoplastic polymer apply aluminum strip, aluminum strip then is designed for the packing such as jar or potting.Best mylar is such high melt viscosity (HMV) resin, and it has been used for the Foilpac of plating baking tray, liquid and heat insulation Foilpac.The SELAR that E.I Du Pont de Nemours Company (E.I.Du Pont Company) sells
PT8307 HMV copolymer resin is exactly the high-efficiency polymerization resin that is suitable for using in the present invention.This copolymer can also mix mutually with other thermoplastic polyester such as the bottled grade polyester of viscosity in having an appointment more than the 0.72IV.For example, the SELAR of Hoescht-Celanese sale
The aluminum strip of series products that is used to make the potting of using such as beverage can that the mixture of PT8307 HMV copolymer and T89PET can be by the present invention coating provides improved to some extent performance.Other thermoplastic polymer who is applicable to this application comprises polypropylene, polyethylene, polyamide (nylon), polyimides, Merlon and polyvinyl chloride (PVC) etc.
Fig. 2 shows the part of another embodiment that implements system of the present invention.In this system,, apply the both sides of this bonding jumper when bonding jumper 70 preferably vertically upward rather than resembling in Fig. 1 when mobile vertically downward.Bonding jumper 70 is walked around feed rolls 72 and is vertically upward moved past pre-heater 74 such as heating system from this roller.Then, bonding jumper moves through an optional flame treatment device 76 and moves past so that the both sides of plating bar between relative extrusion system 78,80.The flame treatment device can improve the bonding jumper acceptance bonding to resinous coat.
Comprise three rollers all similar extrusion coating system 78,80 among Fig. 2 all only comprises two rollers rather than resembles in Fig. 1 except that each to the system among Fig. 1.The location and the superficial velocity of stack 82,84 are left the fast several times of speed of extrusion die 90,92 than polymer, so that as rolling in the system of Fig. 1 and making the extrudate attenuation.Roller 86,88 receptions than roller 82,84 colds are coated onto on the bonding jumper 70 from the extrudate of roller 82,84 and with this extrudate.
After the coating compound 71 moves past post-heater 98 vertically downward from turning to chill roll 96, and this post-heater 98 is heated to about 204-260 ℃ (400-500 °F) with compound so that strengthen such as the base polymer of the mylar cohesive to bonding jumper as in the embodiment in figure 1.Heater 98 can be common induction heater, thermal convection current stove or infrared heater.Move to second cooling from heater 98 via unshowned cooling or quenching device for compound 71 and move to a unshowned recoil roller with slewing rollers 99 and from this roller.Roller 99 is similar with said roller 96 on structure and size.
Fig. 3 is the skeleton diagram of further embodiment of this invention, wherein, launch and upwards dose on the stack assembly 104 from a spreader 102 through the room temperature light sheet material 100 that is in normal condition that purifies, stack assembly 104 comprises that roller 103 and is positioned at the optional backing roll 105 that this handles the assembly top.Include unshowned gatherer to adapt to the variation of the volume on the spreader 102.
Then, heating and the bonding jumper 100 handled enter first in two extrusion coating stations.One unshowned extruder makes pet polymer or other thermoplastic resin plasticising and it is passed to a compressing tablet mould 110 in the fusion mode, this mould perpendicular positioning or relatively vertical line locate obliquely and have a narrow outlet slot.This groove is arranged to and can be produced counter-pressure to extruder, thus make extrudate 112 extend at least with bonding jumper 100 with wide width.Above-mentioned slit is by such as the characteristic and the thickness of fluoropolymer resin, some factors of the shape of the relative velocity of extruder and bonding jumper and compressing tablet mould, factors such as shape of extrudate film and so on and have width less than the width of bonding jumper 100.Extrudate 112 is advanced roller group 114 so that make thickness reduce to the final thickness that can be applied on the bonding jumper by calendering.According to the difference of the polymer of extruding, calendering thickness ratio should be about 10-25: 1.
Two roll assemblies 114 are arranged to the relative horizontal line in plane via the center line of these two rollers about 30 degree that tilt." inboard " or slewing rollers 116 elastic surface made by the high temperature resistance elastomer is preferably arranged and in inside and/or the outside cooled off so that make described elastomeric degeneration reach minimum.
The outside or pressure roll 118 are steel of chromium plating and have passed through the temperature of polishing and preferably remain below about 150 or 66 ℃ (with regard to polyester), this temperature is lower than molten polymer " adhesion " temperature, and described " adhesion " temperature then can impose on polymer with line pressure when polymer being coated onto on the bonding jumper material.This will strengthen polymer to the bonding force of metal 100 and improve appearance.The superficial velocity of roller 116,118 is left fast 10 times of the speed of extrusion die 110 approximately than extrudate, thereby polymer rolled to bonding jumper 100 reach preset thickness, the about .00762mm to 0.02032mm of this thickness (0.3-0.8 mil) and preferably be about first side of the two roll assemblies 114 of 0.01016mm (0.4 mil) by suitable " initially peeling off " intensity plating bar 100 is so that stop polymer and metal to be separated in subsequent processes.
After this, the bonding jumper 100 that has applied a side leaves assembly 114 and (because of the best orientation at the second extruding station) turns to about 60 degree on the elastomeric roller 116 being surrounded by, thereby makes the downward-sloping 30-45 degree of the relative vertical line of bonding jumper (entering about 60 degree in entry position of first assembly relatively).Bonding jumper 100 through having preheated and applied a side continues along inclination 30-45 degree and downward direction, heat heater 120 by optional second (may be a bigger) flame or other type, at this, pre-warmed metallic surface is handled eliminate/to reduce the oxide on the second surface to greatest extent and to improve the bonding force of polymer, provided any required temperature " rising " simultaneously to obtain best bond state.
Then, preheat with pretreated bonding jumper 101 and enter in described two extrusion coating stations second, so that coating is by the bonding jumper opposite side of the first coating station coating.With regard to second extruder, extruder performance requirement, structure and processing procedure are all identical with first extruder.The roll gap that thing 122 enters two roll assemblies 126 that melt extrudes from extrusion die 124, described pair of roll assembly has such structure, wherein, the relative horizontal line inclination in the plane of the center line of process roller 128,130 about 30-45 degree (the position of center line inclination 45-60 degree of relative first assembly 114).
Geometry, structure, performance and the function of roller 128,130 is identical with first assembly 114.Extrudate 122 is coated onto on second side of the bonding jumper 101 after preheating so that first side is formed suitable " initially peeling off " intensity illustrated as above.After this, the bonding jumper 103 that has applied both sides leaves assembly 126 and preferably turn to about 45-90 degree on the described roller that is surrounded by rubber, with the bonding heater 132 of relative induction in a downward direction by realizing best orientation into about the 30-45 degree with vertical line.
The bonding jumper that applied 103 is along tilting and downward direction continuation and through the secondary heater 132 of induction heater preferably, so that the metal/plastic interface is heated to such temperature equably, this temperature can make plastic bonding in bonding jumper under the situation that does not reduce basically or predetermined metal performance or plastics are not had a negative impact.Described temperature preferably about 400-550 (204-228 ℃) and with regard to polyester, be preferably about 425-475 (215-246 ℃).
In case left induction heater 132 and along tilting and downward direction when continuing, nozzle 134 (or other proper device) can be cooled to enough low temperature with described composite construction, thereby turns to around roller 136 under the situation that can not require the final serviceability of composite to have a negative impact.The compound 103 of half cooling turn to and through the tank 138 of a level to finish cooling procedure.
After leaving tank 138, uses compound 103 drying system 140 so that before recoiling, remove redundant moisture.Smooth to eliminate that bonding jumper 100 turns to or bonding and stress that produce on said roller.Then, recoil reel again material 103 after finishing of device 142.Can use unshowned gatherer to change and the silver lap variation to adapt to the roll coil of strip of recoiling on the device 142.
Fig. 4 and Fig. 5 have illustrated another embodiment of the present invention, and wherein, bonding jumper 150 moves in coating process vertically upward, and extrusion die 152,154 directly is coated onto the resin of fusion on the opposite both sides of bonding jumper.The system of Fig. 4 comprises a spreader 156, and bonding jumper 150 upwards moves through an induction pre-heater 158 from this spreader, moves past between two extrusion dies 152,154 then.Mould 152,154 is by unshowned common extruder feed.
Fig. 5 is the enlarged drawing of mould 152,154 when directly being coated onto extrudate 160,162 on the bonding jumper 150.The die orifice of this mould is located adjacent to the position of bonding jumper, and therefore, the power of the extrudate of discharging from this mould can act on bonding jumper.This mould be positioned in the scope of metal treaty 5 to 20mm and preferably apart from bonding jumper less than 10mm.Bonding jumper 150 moves than the about soon 10-20 of the extrudate translational speed that goes out from mould doubly, and therefore, by tractive bonding jumper on extrudate, extrudate will be rolled and thickness can reduce.Extrudate thickness on each surface of bonding jumper is in the scope of 0.0127 to 0.0508mm (0.0005-0.002 inch).
It is directly opposite one another that mould 152,154 is preferably in the opposed surface place of bonding jumper 150, therefore, can focus on the bonding jumper between the mould from the pressure of the extrudate of bonding jumper two opposite sides.The polymer of fusion is almost done closely to contact with the surface of bonding jumper after extrudate leaves said mould immediately, and therefore, polymer can not cool off or shrink before being coated onto bonding jumper.This just helps to guarantee uniform resinous coat is coated on the two sides of bonding jumper.
Fig. 6 to Figure 14 shows other embodiments of the invention, and they are used to apply two surfaces of the bullion such as aluminium, steel, copper, sheet metal or similar material.These embodiment include the device, the first and second extrusion coating equipment that include mould and application roll that are used for the preheating bonding jumper, be used for the device that heated the device of this bonding jumper subsequently and be used for the cool metal bar after having applied the bonding jumper both side surface.Described system also is included in the device that is used for reheating bonding jumper between described first and second coating device in selectable mode.Described system includes one or more extruders that are used for polymer-extruded thing is offered described mould.The described intrasystem first and second extrusion coating equipment include: a casting roller, and it contacts to make it to be close on the bonding jumper with polymer-extruded thing bar; And, a backing roll, it supporting bullion and be provided for the roll gap that bullion and polymer strip is pinched together so as with polymer-bonded to the surface of bonding jumper.Said system comprises a backing roll in selectable mode, and it is used for one or two backing roll so that support above-mentioned backing roll and help to cool off this backing roll.
Described intrasystem pre-heater, reheating device and post-heater can have various ways such as any combination of induction, flame, infrared, radiation, electronics, fossil fuel, thermal convection current stove, warm-up mill or these devices.Can also be by roll-good form or from pre-treatment begins with regard to this bonding jumper of preheating to replenish or the replacement preheating device to the metal row culture.The optimised form of heater is a TFX induction heater, and it can have been bought from Davy Mckee (Poole) company of England Poole.
Mould in the said system is positioned in the about 4-12 inch in the die clearance between each pair roller (10.2-30.5cm) scope in preferably about 6-8 inch or the 15.2-20.3cm scope (size that depends on mould and roller).Polymer strip after the extruding is preferably in the roll gap place and contacts or just contacted with bonding jumper before roll gap with bonding jumper and casting roller simultaneously basically.In addition, the polymer strip after the extruding can contact some anglecs of rotation with the casting roller before entering roll gap.This contact of casting roller before roll gap should not surpass the anglec of rotation such as 0-25 ° of this roller, so that reduced the cooling to polymer to greatest extent before polymer touches bonding jumper in the roll gap place.
It is thick and preferably rolled downwards by bonding jumper and said roller that polymer strip after the extruding is about 0.005 to 0.030 foot (0.127-0.254mm), to reduce the thickness of polymer strip.The calendering ratio is in about 1: 1 to 200: 1 scope and preferably be about 10: 1 to 40: 1.As used herein, calendering is than the ratio that is meant the thickness of polymer strip when being extruded thickness on being coated onto bullion time the with polymer strip.Calendering is than the difference between the speed of extrusion ratio that generally depends on described mould and coated bullion.For example, 20: 1 calendering is than being meant that generally bonding jumper just moves with the fast about 20 times speed of the speed of leaving die cavity than polymer strip.The technology that is used for rolling extruding back polymer strip and making it attenuation is known in present technique.
Concerning some system, be preferably in that paired roller front provides servicing unit so that the location of the polymer strip after will pushing or be coated onto on the surface of bullion.Auxiliary locator can comprise air knife, electrostatic equipment and vacuum positioner etc.But the polymer strip casting becomes to be positioned on the bullion fully or casting becomes wideer than described metal, is repaired then to remove excess coating.
Concerning great majority are used, the preferably hard metallic roll of casting roller, it has the roller surface of chromium plating, chromium oxide, aluminium oxide or other hard metal.This roller surface can be that drag light or veined.The casting roller preferably can be cooled to polymer adhesion or the following temperature of softening point, and therefore, polymer can not adhere on this roller.Concerning great majority were used, described backing roll preferably had the resilient outer surface part, and it is by silicon rubber, polyurethane, such as VITON
Or KEL-F
And so on the CTFE polymer, such as TEFLON
And so on carbon fluorine tetrafluoro ethylene polymer or the constituting of other resistant to elevated temperatures synthetic rubber or elastomeric material or these materials.VITON
, KEL-F
And TEFLON
Be the trade mark of E.I.Du Pont Company (E.I Du Pont de NemoursCompany).Preferably the have an appointment hardometer level hardness (Durometer hardness) of 75-85 Shore A hardness of the outer surface of this elastomeric material.Concerning some is used, should have such as TEFLON such as natural or synthetic rubber, having more on the flexible material
, VITON
Or KEL-F
And so on crust, so that wearing face and suitable compressibility to be provided.Casting roller and backing roll all should have in about 2-20 root-mean-square value (rms) scope than smooth surface.For some application, the casting roller can also have a resistant to elevated temperatures hard synthetic rubber surface as with regard to the backing roll illustration.
When bullion and polymer strip were moved roll gap through casting roller and backing roll, casting roller and backing roll all can be close on bullion and the polymer strip, thereby polymer strip is fitted in bullion.Pushing said roller can make bonding jumper cling to the elastomeric material on the backing roll and help to guarantee that polymer strip is close to bonding jumper to contact gapless mode in the gamut of roll gap opposite to one anotherly.The power at roll gap two ends can be unjustified because of roller or the minor variations of bonding jumper thickness and roller fineness etc. slightly change but must not have unsuitable roller pressure blank.Roller is extruded into the elastomeric material that can push together on backing roll and/or the casting roller, thereby the length along roller forms contact zones at the roll gap place, it is believed that the error when this can be adjusted in the fluctuating that levelling is made of the not levelling of bonding jumper and the power of polymer strip more is evenly distributed on the bonding jumper so that better coating uniformity and cohesive are arranged.Be used for pressure is provided so that roller is fitted each other and is used to regulate or the equipment present technique of adjusting said power is known and comprises air pressure and hydraulic cylinder, jack and ground jack that they act on said roller.
The coated polymer coating of the present invention can be any in such various kinds of resin as described above with reference to Figure 1.Described resin preferably wherein do not have can volatilization solvent be 100% polymer substantially.Identical or different resin can be coated onto on the two opposite sides of bonding jumper, and the coating of one or both sides can comprise pigment or other additive.The preferably medium-hard aluminium alloy of described bullion, its thickness that has about 0.007 to 0.014 inch (0.1778-0.3556mm) like that as described above with reference to Figure 1, but this bullion also can be other metal such as steel or copper or lamination.Described bullion preferably through preliminary clearning and pass through preliminary treatment by anodization or thermal convection current coating (preferably non-chrome coating) or surperficial roughening, with the improvement performance and improve the cohesive of polymer coating to bonding jumper.For example, can handle with titanium phosphate or basic zirconium phosphate, silicate handles or BETZ METCHEM
Thermal convection current applies and purifies and handle aluminum strip.BETZ METCHEM
It is the registration mark of the Betz experiment company of Binzhou Horsham.Organic coating or protective layer can also be coated onto on the one or both sides of gold layer bar, so that impel polymer-bonded in bonding jumper in advance.
In the operating process of said system, bonding jumper is by moving through described system at about 300-1500 feet per minute (fpm) or about 90-450 rice/minute (mpm) and the speed that is preferably in about 600-1200fpm (180-360mpm) scope.Higher speed can be boosted productivity significantly and can be reduced metal and is in time (residence time) under the high temperature.Short residence time is best to reducing metallicity decline to greatest extent sometimes.
With reference to Fig. 6, application system is illustrated as and comprises a roller 172, bonding jumper 174 is through this roller, thereby dosed to the preheating apparatus 173 that also passes through such as induction heater, this heater is according to the metal and the hardness of bonding jumper, and the predetermined character of coating back bonding jumper and the polymeric material factor that will apply are heated to the interior temperature of about 250-550 (121-288 ℃) scope with bonding jumper.The aluminum strip that will be applied with the mylar for the use of the plating bar in the packaging applications, better pre-heat rating is about 400 to 550 °F (204-288 ℃).Preheat temperature and reheat and the back heating-up temperature needn't be too high so that the predetermined character of the polymer coating on bullion or this metal is had a negative impact.
Sequentially apply two opposite surfaces with two extrusion dies 176,178 and two pair rollers 180,182 and 184,186 through the bonding jumper 174 of preheating.One or two unshowned extruder offers extrusion die 176,178 with the fluoropolymer resin of fusion.Described resin is offering the temperature that mould can have about 350 to 650 (177-343 ℃) scopes at 176,178 o'clock, and described extrusion die is preferably heated so that resin is remained on above-mentioned predetermined temperature by resistance device.Extrusion die 176,178 has elongated and narrow die cavity, and its length is substantially equal to the width of the bonding jumper 174 that is applying, and is about 10-85 inch (25.4-215.9cm) or more.The length of the above-mentioned die cavity preferably width with bonding jumper 174 is identical or wideer than the width of bonding jumper 174, and therefore, the polymer strip of extruding from each mould can cover bonding jumper fully.Described die cavity is long and narrow so that can extrude thin polymer strip.Described die cavity can reach 0.030 inch (0.762mm), is preferably in the scope of about 0.005 to 0.015 inch (0.127-0.381mm).Described extrusion die generally is common extrusion die and can have bought from a plurality of dealers.Mould 176 and 178 is discharged thin polymer strip 188 and 190, and they are become pair roller 180,182 and 184,186 to be coated onto on the two opposite sides of bonding jumper 174.
In first pair roller, roller 182 is casting rollers, and it contacts with the polymer strip 188 of discharging from mould 176, and roller 180 is backing rolls, and it is bearing in bonding jumper 174 on the casting roller.As mentioned above, the preferably hard metallic roll of casting roller 182, outside roller surface of backing roll 180 best rubber-likes or roller edge for example have the silicon rubber skin on it.Roller 180,182 is preferably cooled off by the cooling agent such as water that circulates in them.The casting roller is cooled to and is lower than about 150 °F (66 ℃), and therefore, polymer strip can not adhere to this roller.Backing roll 180 preferably internally and/or external refrigeration, to reduce fire damage to greatest extent to the elastic layer of this roller.Provide backing roll 181 to support backing roll 180 and to help backing roll is cooled off in selectable mode.
As shown in the figure, roller 180,182 is located abreast, and their axis is positioned at a substantially horizontal plane abreast, and therefore, bonding jumper 174 and polymer strip 188 can be dosed downwards in the roll gap and via the bottom of roll gap and leave.Bonding jumper 174 can be with described surface around about 0 to 120 ° arc before the outer surface that leaves backing roll is shifted to reheater 192.Polymer strip 188 on the bullion 174 is preferably done minimum contacting with casting roller 182, so as to reduce to greatest extent roller to polymer strip may adhere or roller to the negative interaction of polymer strip.Minimizing of this contact is specially adapted to mylar, and with regard to acrylic resin, the casting roller is (the seeing Figure 14) that conforms to requirement to the more contact and the stronger cooling of resin.With the power of every approximately linear inch 50-300 pound (pli) or the more preferably about 150pli of the preferably about 120-180pli of about 9.0-537kg/cm (21.5-32.2kg/cm) (26.9kg/cm) length roller 180,182 is pressed together along roll gap.But this power can make the outside of the elastic compression of backing roll 180 slightly be out of shape or is influenced, so that guarantee in that to have roller to act on the whole length of roll gap under the situation of power of bonding jumper very close to each other, and said power is a kind of elimination or regulates by the fluctuating of flaky material or the means of the uneven non-collimation that constitutes.But this power can not reduce the specification of described polymer or material.As previously mentioned, compressible stratum being expressed to can be at roll gap place formation roller 180,182 and bonding jumper 174 contacted narrow contact zones on the backing roll 180.According to the size of the power that roller is pinched together and the elasticity and the other factors of backing roll 180, typical contact zones about 1/4 to 1 inch (0.64-2.54cm) are wide, it is wide to be about 3/4 inch (1.9cm) usually.
After the one side that has applied bonding jumper 174, for example selectively this bonding jumper is heated once again with induction heater 192 or similar device.Can bonding jumper be heated to the interior temperature of about 250 to 550 (120-288 ℃) scopes again according to coated polymer, concerning polyester coatings, preferably bonding jumper be heated to about 400 to 550 °F (204-288 ℃) again.Concerning some application and some polyester, before another surface of plating bar 174, needn't heat this bonding jumper again.
Bonding jumper 174 moves to second extrusion die 178 and becomes pair roller 184,186 and optional chill roll 187 from reheater 192, they be used for second polymer strip 190 be coated to bonding jumper with by that side of the coated surface opposite of first polymer strip 188.Preferably shorter from the distance that exports to second roll gap of first roll gap, between two roll gaps, control the heat loss of this metal when mobile with the described metal of box lunch.Second mould 178 and second pair roller 184,186 except the roller counter-rotating all with first mould 176 with to become pair roller 180,182 similar, the second casting roller is positioned at the opposite side from the bonding jumper of the first casting roller, the axis of said roller is in different planes, and second mould 178 is in different directions.For making bonding jumper 174, substantially perpendicularly move through the plane of the bonding jumper of described die clearance and with vertical line via the plane of roller 184,186 axis and to have a certain degree along one straight substantially in the gap of line through second mould.So except the narrow contact zones that strain produced of the elastomeric material of backing roll 186 outsides, bonding jumper 174 has minimum contacting with roller 184,186.As previously mentioned, polymer on some mylar roller 184,186 and the bonding jumper 174 this minimum contacted it is believed that quality and the performance that helps to improve the final products after the coating.Concerning other polymer such as polypropylene, be preferably in bonding jumper after the coating and leave and reel with roller basically before the said roller and cool off this polymer.
The same with first group of roller, second group of roller 184,186 must be close on bonding jumper 174 and the polymer strip with enough power, all is close to individual in bonding jumper on the whole width of roll gap so that guarantee polymer strip 190.Power between second group of roller 184,186 should and preferably be about 120-180 (21.5-32.2kg/cm) at about 50-300pli (9.0-53.7kg/cm).
After having applied the both sides or surface of bonding jumper 174 with polymer strip 188,190, the system of metal after the bonding jumper of coating fully moves through post-heater 194 and is used to cool off coating.Although it is dispensable for purposes of the invention,, it is believed that the bonding jumper after should making coating when polymer solidifies because of cooling is done minimum contacting with roller or other mechanical device between application roll 184,186.For example, bonding jumper 174 preferably moves through post-heater 194 and the unshowned device that is used at least partly bonding jumper being cooled to the following temperature of fusing point that is being applied to the polymer on the bonding jumper at least along straight basically line from roller 184,186.In this way, can contact with polymer phase on the bonding jumper with roller or similar device preventing before the polymer cure, and roller or similar device can not have a negative impact to coating.
Post-heater 194 is induction heater, infrared heater, thermal convection current stove or two or three combination in them preferably, and this can quickly heat up to the resin of sheet and be at least about softening temperature, preferably be heated to more than the fusing point of polymer.Importantly, this heating can not be too high so that can produce significant harmful effect to bullion or the character that is coated in the polymer on this bonding jumper.Polymer is heated to is at least about its fusing point and can makes this polymer flow, thereby repair any defective and/or make the uneven coating on the bonding jumper become level and smooth.
After already bonding jumper having been carried out back heating, this bonding jumper is cooled off fast be essentially amorphous form so that coating is solidified into.At first should bonding jumper be cooled to partly below the fusing point of polymer, then with the chilled bonding jumper of cascade or the described part of tank quenching with air or other gas.It is believed that and water can be reduced to minimum to possible the adverse effect of the polymer that still is in molten condition with the local cool metal bar of air, just as used herein like that, " cooling fast " be meant after the coating bonding jumper move with about 300-1500fpm best to leave post-heater cooling polymer coating promptly afterwards when about 600-1200fpm moves.The cooling or quenching device be positioned in the scope of several feet for example about 5-50 feet of post-heater, therefore, the bonding jumper after coating leaves after the post-heater, polymer coating be preferably be cured be no more than about 10 seconds, more preferably be to be no more than about one second.
After having cooled off bonding jumper already, by finished edge, rip cutting, smooth, be wound up on the winding stand and bonding jumper is for further processing or bonding jumper is made finished product such as potting or tank body under the situation of reeling again or not reeling again.
Fig. 7 shows another kind of system, and it is arranged on perpendicular to all similar with system shown in Figure 6 in the plane of the bonding jumper 196 that passes roll gap except top becomes pair roller 202,204 to be positioned to roll axis.Can increase unshowned chill roll cools off to help pair roller 202,208 and 212.In this system, bonding jumper has minimum contacting with backing roll, so, the conduction of less heat is arranged from the bonding jumper to the backing roll and there is less fire damage the elasticity outside of backing roll 202.This also means can have less cooling to bullion, thereby can exempt any demand that bonding jumper is heated or heated before the opposite side of plating bar.Heating more if desired, the bonding jumper that a side is coated have the direction that turned to by roller 208 and through heating heater 210.Then, the opposite side of bonding jumper is coated by mould 216 and roller 212,214.After this, abovely the bonding jumper that has applied is fully carried out back heating and cooling/quenching by being similar to reference to Fig. 6 described mode.
Fig. 8 has illustrated another embodiment of the present invention, it is all similar with the embodiment of Fig. 6 except following difference: the roller 218,220 in the coating station, bottom is horizontally disposed with in mode side by side, the axis of these two rollers is in the substantially horizontal plane and bonding jumper 222 rotates about 90 ° with backing roll 210, after this, bonding jumper moves to the back heating and cooling device that does not show.Fig. 8 also has been shown in broken lines some the feasible paths of advancing after the roll gap of bonding jumper in leaving coating station, bottom.
Fig. 9 has illustrated an also embodiment of the present invention, it have bullion 230 through the vertical direction of being essentially of pre-heaters 231, first group of roller 232, heat heater 234 and second group of roller 236.The bonding jumper of twice coating moves through unshowned post-heater and unshowned cooling system from second group of roller.If the space allows, post-heater preferably is positioned at the below of described two application roll in the mode of vertical one-tenth delegation, and bonding jumper is preferably in contact with slewing rollers and is cooled under the fusing point of polymer before.Work under this fusing point that is cooled to polymer can be undertaken by the air cooling, and after this, bonding jumper removes to stand the fluid quenching such as shrend.
Figure 10 shows another embodiment of the present invention, and wherein, bonding jumper 240 essentially horizontally passes through between two extrusion dies 242,244 and paired roller.In this system, bonding jumper 240 turns to around backing roll 246, and backing roll 246 has then formed roll gap with casting roller 248.Extrusion die 242 extrude above the roll gap will be close to and be bonded in bonding jumper before rolled and reduced the thin polymer bar 250 of thickness.As in the aforementioned system, cooling off casting roller 248 and backing roll 246.
Figure 11 shows the another embodiment that is used for plating bar 264, and wherein, bonding jumper moves past and moves through pre-heater 266 on slewing rollers 265, and, simultaneously polymer strip 268,270 is coated on the two opposite sides of bonding jumper basically.Extrusion die 272,274 extruded polymer bars 268,270 in the native system, they are advanced roll gap by 276,278 calenderings of casting roller and are close on the two opposite sides of bonding jumper.In the casting roller 276,278 two, then wherein at least one preferably has such as TEFLON
, VITON
, KEL-F
, elastomer and so on compressible skin, to guarantee on the whole length of roll gap, continuous bonding force being arranged.Described system preferably includes chill roll 280,282 so that help to cool off casting roller 276,278 and prolong life-span of these casting rollers.Described system also comprise a post-heater 284 and such as cascade 286 to the similar quenching device shown in the above accompanying drawing.
Figure 12 shows another embodiment of the present invention, wherein, bar material such as aluminum strip 290 moves past slewing rollers 292, moves through pre-heater 294 and between top casting roller 300 and upper support roller 302 and move, thereby the polymer strip of being extruded from upper mould 296 on first side 298 is coated.The steel rider that the casting roller preferably polishes, and backing roll preferably has compressible skin.Preferably include a top chill roll 303 to prolong the life-span of the compressible material on the backing roll 302.The bonding jumper that has applied a side preferably moves through a heater 304 from the roll gap between the roller 300,302, reheating or to improve the temperature of bonding jumper, thus the opposite side of second polymer strip, the 312 plating bars of extruding with bottom extrusion die 310.One bottom casting roller 308 and backing roll 306 are close to polymer strip 312 on the bonding jumper, so that polymer strip is bonded in bonding jumper.The steel rider that bottom casting roller 308 preferably polishes, lower support roller 306 has such as TEFLON
, VITON
Or KEL-F
, elastomer and so on compressible outer surface.Can be with the same bottom chill roll 314 that comprises selectively of upper roll group.After having applied second polymer strip, the bonding jumper that both sides are all coated is heated to more than the fusing point of polymer after by heater 316, is cooled off fast by cascade 318 then.
Figure 13 shows another embodiment of the present invention, wherein, when moving past system in bonding jumper material 320 is being generally the path of serpentine, can apply the two opposite sides of this bonding jumper according to priority.In this system, bonding jumper 320 moves past slewing rollers 322, moves through pre-heater 324 and between casting roller 330 and backing roll 332 and moves, so that will be bonded in a side of bonding jumper from first polymer strip 326 of mould 328.Preferably include a chill roll 348 to prolong the life-span of compressible material on the backing roll.In this system, casting roller 330 partly is wound up into about 45-90 ° degree on the described roller with the direction that the position of backing roll 332 can make bullion 320 advance according to the plane of the axis of described two rollers of the relative process of this bullion.
After receiving first coating, bonding jumper 320 preferably is diverted roller 336 and turns to and move through a heater 338 to increase the temperature of bonding jumper, then, by casting roller 344, backing roll 346, chill roll 348 and with the extrusion die 340 that polymer strip 342 is got into roll gap coating is coated on the opposite side of bonding jumper.The position of the direct of travel of roller 344,346 relative bonding jumpers 320 and coating station, top are similar, and therefore, bonding jumper also can partly be wound on the said roller when moving through coating station, bottom.The bonding jumper 320 of the equal coating in both sides preferably is heated to more than the fusing point of polymer behind the quilt of coating station, bottom, is cooled off fast so that the polymer cure on the bonding jumper then.
Figure 14 shows an alternative embodiment of the invention, and it is specially adapted to polypropylene coating is coated on the both sides of aluminum strip material.In this system, bullion 352 move past on the slewing rollers 354, downwards with and vertical line move roll gap between pre-heater 356 and shift-in backing roll 358 and casting/chill casting roller 360 into about the mode at 30-60 ° of angle so that will be coated onto on the bonding jumper from the polymer strip 364 of mould 362.In this system, bullion 352 partly is wound on casting/chill casting roller 360 so that the polymer of this roller on can cool metal bar, thus guarantee described polymer particularly polypropylene material can peel off in said roller but can stay on the bonding jumper.Can use carry-over pinch rolls 370 so that make bonding jumper 352 servo-actuateds as shown in the figure like that in casting/chill casting roller 360.Casting/chill casting roller be preferably in inner cooling and have all feet of 3-6 according to appointment (0.91-1.83 rice) and so on than major diameter, so that the polymer fully on cool metal bar and this bonding jumper.Backing roll preferably has compressible skin and is preferably in inside and/or the outside is cooled off.
Bonding jumper 352 moves past slewing rollers 372, moves through a heater 374 from coating station, top, so that by identical with coating station, top basically coating station, bottom second coating is coated on the bonding jumper.Coating station, bottom comprises an extrusion die 382, a backing roll 376, one casting/chill casting roller 378 and carry-over pinch rolls 384, and they are used for polymer strip such as polypropylene is coated to bonding jumper.Then, from the coating of carry-over pinch rolls 384 twice bonding jumper preferably the same as back heating and cooling fast with other system as herein described.
Concerning some application or the present invention, the coating on the bonding jumper two opposite sides can be different polymer and different thickness can be arranged.For example, the mixture of the polyester that lip-deep coating is high melt viscosity and bottled other polyester of level, another lip-deep coating then can be polyethylene or vinylite.Can also comprise pigment or coloring material in one or two lip-deep coating.
Apply bullion according to the present invention and coating closely need be bonded in bonding jumper with the packaging applications that is used for such as making tank body or potting.It is smooth and level and smooth that described bonding jumper be used for packaging applications also to be needed the surface of coating.Described surface should have the minimum flaw such as projection or blemish.Metal such as tensile strength, bending strength, percentage elongation.The mechanical performance of formability and corrosion resistance and so on also should be best.Described coating also must be flexible, and therefore, when the final finished that bonding jumper is processed into such as tank body, potting or other finished product, said coating can not rupture or delamination.The coating that is used for packaging applications is also wanted suitable approaching, for example about half mil, and the thickness of this coating should be uniform basically.
When enforcement is of the present invention, playing the part of important role in the quality of bonding jumper by path bonding jumper after coating of one-tenth pair roller, post heating device and cooling/quenching system.Specifically, coating be cooled to the fusing point that is at least polymer in the coating or below the softening point before, should make the coating on the bonding jumper reach minimum with contacting of roller.Concerning some system, should cool off at the bonding jumper after will apply with air before the shrend after the back heating and reduce to below the fusing point of polymer.Water was to the possible adverse effect of fused coating when this air cooling can reduce quenching to greatest extent.
By the aluminum strip of the present invention coating with compared multiple advantage by coating of prior art method or stacked bonding jumper.An important advantage is: described coating is understood close adhesion or is adhered to the both sides of metal-based layer, and, at the tank body of bonding jumper being made such as calendering or calendering and pressing, during the goods of potting or automobile decoration or instrument and so on, described coating can not be peeled off or delamination.Can also there be one-tenth still less to make said bonding jumper originally by bonding jumper than prior art.This is because the present invention has omitted and made and be laminated to secondary operations such as film shaped, coiling on the bonding jumper and expansion by prior art.
So, as can be seen, the invention provides a kind of being used for thermoplastic coating is coated onto modified continuous process and a kind of modified bonding jumper that forms in such a way on the bonding jumper both sides.Although illustrated to be used to implement some alternate mode of the present invention,, should be clear, accompanying Claim has comprised all and has belonged to pattern and embodiment within the spirit of the present invention.For example, when coating is near fusing point or on fusing point, come coating on the abrasive metal bar with the touch roll of a polishing, said coating back bonding jumper is then passing through from aforementioned touch roll after the heating of back and before having cooled off coating.According to the explanation that this paper comprised, other processing method as can be seen.
Claims (38)
1. one kind is used for the extrusion coating bonding jumper to produce the method for plating bar, and this method comprises:
Provide and be about 0.007 to 0.014 inch (0.1778-0.356mm) thick bonding jumper;
Described bonding jumper is heated at least about 400 °F (204 ℃), but does not heat De Taigao so that the predetermined character of this bonding jumper is had a negative impact;
Fluoropolymer resin is expressed on the both sides of the bonding jumper after the above-mentioned heating to form the coating that is bonded at least in part on this bonding jumper, this coating has the thickness in about 0.0003 inch to 0.0015 inch (0.0076-0.038mm) scope;
Bonding jumper after the above-mentioned coating is heated to the glass transfer point (glass tramsition point) that is at least aforementioned resin, but do not heat De Taigao so that the predetermined character of this bonding jumper is had a negative impact, thereby described resin can be bonded in the aforementioned metal bar; And
Bonding jumper after the above-mentioned coating is cooled to is lower than about 104 °F (40 ℃) so that solidify said resin to be essentially amorphous mode.
2. the method for claim 1 is characterized in that, enters this bullion of heating before second pair roller after aforementioned bullion leaves first pair roller.
3. the method for claim 1 is characterized in that, after the aforementioned metal bar leaves said second group of roller, this bonding jumper is heated to the glass transfer point that is at least about described polymer strip.
4. the method for claim 1 is characterized in that, after the aforementioned metal bar leaves said second group of roller, this bonding jumper is heated to the fusing point that is at least described polymer.
5. the method for claim 1 is characterized in that, the polymer in the described at least a polymer strip is a polyester.
6. the method for claim 1 is characterized in that, the polymer in described two kinds of polymer strip does not comprise solvent basically.
7. the method for claim 1 is characterized in that, described polymer strip is 100% polymeric material.
8. method as claimed in claim 3 is characterized in that, the bullion after the aforementioned coating is quickly cooled to be lower than about 150 °F (66 ℃) to solidify said polymer.
9. the method for claim 1 is characterized in that, cools off bullion after the aforementioned coating fast so that solidify two lip-deep polymer of this bullion to be essentially amorphous mode.
10. process as claimed in claim 1 is characterized in that, described first polymer strip is the synthetic identical with second polymer strip.
11. process as claimed in claim 1 is characterized in that, described first polymer strip is the synthetic different with second polymer strip.
12. the method for claim 1 is characterized in that, at least one in the described polymer strip includes pigment.
13. the method for claim 1 is characterized in that, described bullion is an aluminium alloy.
14. the method for claim 1 is characterized in that, described polymer strip is calendered to be about 0.0001 to 0.005 inch thickness in the scope.
15. the method for claim 1 is characterized in that, described polymer strip is calendered to be about 0.0002 to 0.002 inch thickness in the scope.
16. the method for claim 1 is characterized in that, described bonding jumper moves downward through the roll gap between aforementioned first and second pair roller.
17. the method for claim 1, it is characterized in that, the axis of described first pair roller is level basically, described bonding jumper by and horizontal line into about the angle in 30 ° of-70 ° of scopes move down with enter between first pair roller roll gap and by leaving first pair roller in a downward direction into about the angle in 60 ° to the 140 ° scopes with the direction of this pair roller of polymer strip shift-in.
18. method as claimed in claim 17 is characterized in that, described bonding jumper is by entering first pair roller with horizontal line into about 45 ° angle, and by with waterline into about 45 ° angle from this first pair roller.
19. method as claimed in claim 17 is characterized in that, described bonding jumper is essentially in the straight path from first pair roller one and moves to and move past roller second pair roller.
20. method as claimed in claim 19 is characterized in that, the axis of the roller in described second pair roller is arranged in such plane, and this plane and described bonding jumper move through the plane of second pair roller angle into about 90 °.
21. the method for claim 1 is characterized in that, described bonding jumper perpendicular is down moved the roll gap between above-mentioned first and second group roller.
22. the method for claim 1 is characterized in that, after bonding jumper leaves second pair roller and the coating on the bonding jumper with promptly carry out said cooling before any roller or other mechanical device contact.
23. method as claimed in claim 22 is characterized in that, is heated to the fusing point that is at least aforementioned polymer before the bonding jumper of the described coating of cooling back.
24. the method for claim 1 is characterized in that, rolls described first and second polymer strip so that reduce their thickness by about 1: 1 to 200: 1 calendering than (draw ratio).
25. method as claimed in claim 24 is characterized in that, described calendering is than in about 10: 1 to 40: 1 scope.
26. method as claimed in claim 25 is characterized in that, described calendering ratio is about 25: 1.
27. method as claimed in claim 24 is characterized in that, in the described polymer strip one many than another minimizing on thickness.
28. the method for claim 1 is characterized in that, at least one in the described polymer strip comprises the resin of high melt viscosity.
29. the method for claim 1 is characterized in that, at least one in the described polymer strip comprises the mixture of the polyethylene terephthalate resin of the mylar of high melt viscosity and bottled rank (bottle grade).
30. the method for claim 1 is characterized in that, described bullion comprises the aluminium alloy of medium-hard thickness in about 0.007 to 0.014 scope.
31. the method for claim 1 is characterized in that, described bullion is being coated polymer strip in the past through purifying and handling.
32. method as claimed in claim 31 is characterized in that, (conversion coating) handles said bonding jumper with the convection current coating.
33. the aluminum strip with thin polymer coating, described coating closely is bonded on the two sides of this aluminum strip by the described method of claim 1.
34. aluminum strip as claimed in claim 33 is characterized in that, the lip-deep polymer of at least one of described aluminum strip comprises the polyester of high melt viscosity.
35. aluminum strip as claimed in claim 33 is characterized in that, the lip-deep polymer of at least one of described aluminum strip comprises the polyester of high melt viscosity and the mixture of bottled other polyester of level.
36. be used for polymer-coated equipment to the bonding jumper both sides, this equipment comprises:
Be used for bonding jumper is carried out the device of preheating;
First and second pair rollers, every pair roller include a casting roller and a backing roll, and they have constituted bonding jumper and polymer strip therefrom moves past so that polymer strip is bonded in the roll gap of bonding jumper;
At least one extruder;
First and second extrusion dies, they are used to squeeze out thickness less than about 0.030 foot polymer strip;
Heat after being used for after bonding jumper moves past above-mentioned first and second pair rollers this bonding jumper carried out and make polymer strip be adhered to the device of bonding jumper both sides; And
Be used for after bonding jumper is by the back heating, cooling off fast the device of this bonding jumper.
37. equipment as claimed in claim 36 is characterized in that, this equipment comprises and is used for the device that when described bonding jumper moves past between aforementioned first pair roller and second pair roller this bonding jumper reheated.
38. equipment as claimed in claim 36 is characterized in that, the backing roll in described each pair roller all has the exterior section of compressible material as this roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95197807A CN1091006C (en) | 1995-04-12 | 1995-04-12 | Method and apparatus for coating a metal strip and the product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95197807A CN1091006C (en) | 1995-04-12 | 1995-04-12 | Method and apparatus for coating a metal strip and the product thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1181029A true CN1181029A (en) | 1998-05-06 |
| CN1091006C CN1091006C (en) | 2002-09-18 |
Family
ID=5083364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95197807A Expired - Lifetime CN1091006C (en) | 1995-04-12 | 1995-04-12 | Method and apparatus for coating a metal strip and the product thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1091006C (en) |
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| CN102378654A (en) * | 2009-03-26 | 2012-03-14 | 海德鲁铝业德国有限责任公司 | Extrusion-coated strap for rigid packagings |
| CN101035926B (en) * | 2004-10-07 | 2012-09-26 | 贝洱两合公司 | Coating method |
| CN101203328B (en) * | 2005-06-06 | 2012-10-03 | 先进光学技术股份有限公司 | Apparatus and method for paint coating or varnish coating a coilable metal sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU37356A1 (en) * | 1958-08-22 |
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1995
- 1995-04-12 CN CN95197807A patent/CN1091006C/en not_active Expired - Lifetime
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| CN101035926B (en) * | 2004-10-07 | 2012-09-26 | 贝洱两合公司 | Coating method |
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