CN105983514A - Photocuring coating device applicable to hydrophilic aluminum foil coating and coating method based on device - Google Patents
Photocuring coating device applicable to hydrophilic aluminum foil coating and coating method based on device Download PDFInfo
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- CN105983514A CN105983514A CN201510100427.3A CN201510100427A CN105983514A CN 105983514 A CN105983514 A CN 105983514A CN 201510100427 A CN201510100427 A CN 201510100427A CN 105983514 A CN105983514 A CN 105983514A
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Abstract
The invention provides a photocuring coating device applicable to hydrophilic aluminum foil coating and a coating method based on the device. The photocuring coating device comprises an aluminum foil releasing device, a plurality of coating units and an aluminum foil winding device which are sequentially arranged from one side to the other side, wherein the coating units comprise multi-roll coating devices, drying devices and photocuring devices which are sequentially arranged from the aluminum foil releasing device to the aluminum foil winding device; each multi-roll coating device comprises a plurality of coating rolls; and the photocuring devices comprise light sources and cooling rolls. The photocuring coating device has the advantages that a novel photocuring coating can be applied to the production process of hydrophilic aluminum foil, performances of a product can reach the quality index of traditional thermocuring aluminum foil, and the device is applicable to production of hydrophilic aluminum foil of fins of a heat exchanger of an air conditioner.
Description
Technical field
The present invention relates to a kind of photocuring coating apparatus being applicable to hydrophilic aluminium foil coating and the coating process based on this equipment, belong to the manufacture field of hydrophilic aluminium foil used by air-conditioning heat exchanger.
Background technology
In recent years, development of air conditioning industry was rapid, and it is convenient to provide for our live and work.When the heat exchanger of air-conditioning works, the condensed water that air produces can form the globule on the fin of heat exchanger, when spacing of fin is less than 2mm, the condensation globule can couple together with the globule in adjacent fins and form water bridge, miniaturization with air-conditioning, pitch requirements between fin is less and less, and therefore, water bridge phenomenon is very serious.Water bridge phenomenon causes windage to increase, air quantity declines, thus affects the thermal property of device, makes refrigerating capacity reduce.Additionally, although aluminium and aluminium alloy thereof have good corrosion resistance, but the condensed water on the aluminium surface of prolonged stay absorbs oxygen and sulphur, nitrogen etc. in air, accelerate the generation of aluminium foil surface corrosion, and then cause aluminium foil efflorescence, causing the pollution of environment, particularly in coastal area, this phenomenon is more serious.In order to prevent generation, raising and the performance improving air-conditioner of above-mentioned phenomenon, conventional method is that the fin to heat exchanger carries out hydrophilic and preservative treatment, protects at fin surface one layer of hydrophilic corrosion-inhibiting coating of coating, i.e. hydrophilic aluminium foil.
Hydrophilic aluminium foil coating many employings heat curing coating of current heat exchanger, the shortcoming of such coating is to use a large amount of solvent, and need high-temperature heating (350～500 DEG C) guarantee solidification effect when solidification, cause the electricity cost of great number, not only not environmentally but also consume substantial amounts of electric energy.In order to solve the high energy consumption of traditional coating, maximum discharge, the problem of high pollution, the solvent-free photocureable coating of our independent research, ultraviolet light irradiation radiation modality is used to make resin and diluent system film-forming within the several seconds, owing to hardening time is extremely short, it is thus achieved that environmental protection, efficient, energy-conservation target, greatly reduce conventional thermal coating material solidified cause during producing hydrophilic aluminium foil high energy consumption, maximum discharge, the problem of high pollution.Compared to published patent and document, there are no the document corresponding with this Project Technical and patent, the research and development of project have novelty.But solvent-free photocureable coating can not use on traditional Thermocuring equipment, it is therefore desirable to design brand-new low coating weight and there is the equipment of ultra-violet curing module to realize the production of photocuring hydrophilic aluminium foil.
Content of the invention
It is an object of the invention to the deficiency that cannot accomplish low coating weight, ultraviolet light polymerization overcoming above-mentioned existing hydrophilic aluminium foil equipment to exist, a kind of Novel coating equipment being applicable to the production of ultraviolet light polymerization hydrophilic aluminium foil and the coating process based on this equipment are provided.
The present invention is achieved by the following technical solutions:
The present invention provides a kind of photocuring coating apparatus being applicable to hydrophilic aluminium foil coating, it includes an aluminium foil unwinding device, several coater units and the aluminium foil wrap-up setting gradually from side to opposite side, described coater unit includes many coating device, drying unit and the light curring unit being set gradually by aluminium foil unwinding device to aluminium foil wrap-up, described many coating device comprise some applicator rolls, and described light curring unit includes light source and chill roll.
Preferably, the quantity of described applicator roll is five, the line of five applicator rolls is L-shaped, wherein, two applicator rolls are vertically arranged, two applicator rolls are horizontally arranged, two applicator rolls being vertically arranged all can in the vertical direction translation, two horizontally arranged applicator rolls all can translation in the horizontal direction.
Multiple roll coating includes a variety of, such as three-roll coating, four roller coat cloth, five roller coat cloth, six roller coat cloth etc..By the extruding between roller repeatedly and roller during coating, separate and improve wet coating amount and the levelability of coating.As the controllable wet coating amount increasing coating of applicator roll quantity gradually reduces, is coated with precision and is stepped up.It is owing to our control to coating weight needs to reach 0.3～3.0g/m that the present invention selects the five roller coat leftover of bolt of cloth2Between, and this coating weight only has the coating system of more than five rollers just can accomplish.
Preferably, two horizontally arranged described applicator rolls be respectively arranged at the two ends with a baffle plate.
Preferably, described aluminium foil wrap-up and aluminium foil unwinding device all use Double Tops to bore or air-expanding shaft drives.
Preferably, described light source includes lampshade and the many mercury lamps being arranged in described lampshade, is filled with inert gas in the space in described lampshade.
Preferably, described mercury lamp is along the direction vertical arrangement being perpendicular to base material advance.
Preferably, the distance between adjacent two described mercury lamps is 3～30cm.
Preferably, described applicator roll and chill roll are hollow roll body, and there is the pipeline of recirculated water or oil inside, constant to ensure applicator roll and chill roll surface temperature.
A kind of coating process based on photocuring coating apparatus of the present invention, it comprises the steps:
Aluminium foil, after unwinding device unreels, enters the applicator roll in many coating device by deflector roll, and the position adjusting applicator roll makes adjacent applicator roll be in close contact, and carries out the coating of coating；
Aluminium foil after coated is imported in drying unit by deflector roll, dries；
Aluminium foil after drying is imported in the light source in light curring unit by deflector roll, carries out photocuring；
Aluminium foil after photocuring is imported in cooling device by deflector roll and cools down；
Aluminium foil after cooling is carried out rolling by wrap-up, completes the coating of aluminium foil.
Preferably, a length of 200～420nm of the ultraviolet light wave of described mercury lamp, the radial power density of mercury lamp fluorescent tube is 100～200W/cm, and the hull-skin temperature of described applicator roll is 20～60 DEG C, and the hull-skin temperature of described chill roll is 15-25 DEG C.
Preferably, when the rotating ratio of two described applicator rolls is 15:100, coating weight is 1.0g/m2, a length of 280～365nm of ultraviolet light wave of described mercury lamp.
The material of colloid applicator roll is PU or silica gel, has the advantage that solvent resistant is good, wearability is good, heatproof reaches as high as 100 DEG C.
During production, the aluminium foil after extrusion coated is introduced into drying unit, and drying unit is one for the present invention and selects to use item, when coating process needs just to open drying unit through drying and processing, is otherwise closed.The length of drying unit is 3～8 meters, is made up of some joint baking ovens, often saves baking oven baking oven and be furnished with 3 road air knives and air inlet/outlet EGR, use infrared heating or electrically heated mode.Product after drying unit enters light curring unit and solidifies.
The light curring unit that the present invention comprises is anaerobic solidification equipment, in addition to the fine gap of import export, other are all the systems closed to whole photocuring cavity, whole system is to be divided into two solidification cavity by the quartz glass of a piece of high transmission rate, the product of coating and import and export are in the side of quartz glass, and ultraviolet source is in the other side of quartz glass.Have the inert gases such as logical nitrogen to carry out solidification protection in the side cavity imported and exported, to ensure the oxygen content of internal minimum, typically control oxygen content within 0.1%.The light source part of the ultraviolet curing device of other side is made up of the mercury lamp of the some parallel arrangements being perpendicular to base material direction of advance, the wave-length coverage of the ultraviolet light that this device uses is between 200～420nm, fluorescent tube radial power density is 100～200W/cm (i.e. fluorescent tube general power/fluorescent tube length), being spaced between 3～30cm between lamp and lamp.Light curring unit uses cooling circulating water to cool lampshade, with the service life of prolonging lamp tube.And have air exhauster to be positioned at this side the ozone that light source produces is completely drawn out.
Product temperature through overcuring typically all can be higher, therefore light curring unit also includes chill roll, and a diameter is more than the steel rider of 500mm, and there is circulating water pipeline inside, it is connected with coolant and carries out cooling process to the aluminium foil through this chill roll, during to ensure rolling, be in room temperature state.
Compared with prior art, the present invention has a following beneficial effect:
The winding/unwinding device of the present invention uses Double Tops cone or inflatable shaft design, the weight producing aluminium foil with specific reference to client determines, unwinding and rewinding are double to ensure to produce continuously, unwinding tension uses constant-tension, winding tension uses taper tension, match the change of coil diameter with tension force in guarantee production process, whole apparatus for coating uses PLC control, it is ensured that the stability of coating.
Realized that by five coating device the wet coating amount of coating can control at 0.3～3.0g/m accurately2Between adjustable, realized the film forming solidification of coating by ultraviolet curing device.Novel Photocurable coating material can be applied to the production process that hydrophilic aluminium foil produces, and products obtained therefrom performance reaches the quality index of conventional thermal solidification hydrophilic aluminium foil, it is adaptable to the production of the hydrophilic aluminium foil of air-conditioning heat exchanger fin.
Five coating device of the present invention are made up of through the applicator roll of polishing five root surface, rubber roll, steel rider or ceramic roller can be, when surface polishing can ensure that coating, coating can be evenly distributed on all roll surfaces, and then the coating continuous uniform on guarantee aluminium foil products is without holiday.
Brief description
By reading the detailed description made non-limiting example with reference to the following drawings, the other features, objects and advantages of the present invention will become more apparent upon:
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in those skilled in the art and are further appreciated by the present invention, but do not limit the present invention in any form.It should be pointed out that, to those skilled in the art, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into protection scope of the present invention.
Embodiment
1
The present invention provides the structure of a kind of photocuring coating apparatus being applicable to hydrophilic aluminium foil coating as depicted in figs. 1 and 2, including set gradually from side to opposite side aluminium foil unwinding device A, several coater units B and an aluminium foil wrap-up C, coater unit B includes that many coating device B1, drying unit B2 and the light curring unit B3 being set gradually to aluminium foil wrap-up by aluminium foil unwinding device, aluminium foil wrap-up A and aluminium foil unwinding device C all use Double Tops to bore or air-expanding shaft drives.nullMany coating device comprise the first applicator roll 1 of line l-shaped successively、Second applicator roll 2、3rd applicator roll 3、4th applicator roll 4 and the 5th applicator roll 5，Wherein，First applicator roll 1、Second applicator roll 2 is vertically arranged，4th applicator roll 4 and the 5th applicator roll 5 are horizontally arranged，3rd applicator roll 3 is positioned between the second applicator roll 2 and the 4th applicator roll 4，3rd applicator roll 3 fixedly mounts，First applicator roll 1 and the second applicator roll 2 can vertically translations，4th applicator roll 4 and the 5th applicator roll 5 can be along left and right translations，Make operationally，Adjacent applicator roll can fit tightly，Distributing order rigidity the to be adhered to roller of each applicator roll principle alternate with flexible roller，Generally: first applicator roll 1 [steel rider (or ceramic roller)]-the second applicator roll 2 [rubber roll] the-the three applicator roll 3 [steel rider (or ceramic roller)]-the four applicator roll 4 [rubber roll] the-the five applicator roll 5 [steel rider (or ceramic roller)]，Or: first applicator roll 1 [rubber roll] the-the second applicator roll 2 [steel rider (or ceramic roller)]-the three applicator roll 3 [rubber roll] the-the four applicator roll 4 [steel rider (or ceramic roller)] the-the five applicator roll 5 [rubber roll]，The scheme that all five applicator rolls all use hollow to lead to circulation fluid，Circulation fluid can be water、Oil or other media，To ensure that applicator roll hull-skin temperature is stable，Make to ensure that coating is coated with under preferable viscosity state during production，And then ensure the uniformity of coating.It outside the two ends of the 4th applicator roll 4 and the 5th applicator roll 5, is respectively provided with a baffle plate 6, make baffle plate 6 and two roller roll surfaces fit tightly and prevent coating from flowing out from side；Light curring unit B2 includes light source 7 and chill roll 8, and wherein light source 7 includes lampshade and the many mercury lamps being arranged in described lampshade, and many mercury lamps are along being perpendicular to the direction vertical arrangement that base material advances, and the distance between adjacent two described mercury lamps is 3～30cm.Space in lampshade is filled with inert gas, lampshade be respectively arranged at two ends with aluminium foil entrance and aluminium foil outlet, aluminium foil entrance and aluminium foil outlet are positioned in same level, it is also embedded with light transmission glass plate in lampshade, the side of this light transmission glass plate is mercury lamp, and opposite side is the line between aluminium foil entrance and aluminium foil outlet.Can also cool with recirculated water in lampshade, with the service life of prolonging lamp tube.And with air exhauster, the ozone that light source produces can be completely drawn out, product temperature through overcuring typically all can be higher, therefore light curring unit also includes chill roll, a piece diameter is more than the steel rider of 500mm, there is circulating water pipeline inside, it is connected with coolant and carries out cooling process to the aluminium foil through this chill roll, during to ensure rolling, be in room temperature state.Chill roll is also hollow roll body, and there is the pipeline of recirculated water or oil inside, constant to ensure chill roll surface temperature.
Multiple roll coating includes a variety of, such as three-roll coating, four roller coat cloth, five roller coat cloth, six roller coat cloth etc..By the extruding between roller repeatedly and roller during coating, separate and improve wet coating amount and the levelability of coating.As the controllable wet coating amount increasing coating of applicator roll quantity gradually reduces, is coated with precision and is stepped up.It is owing to our control to coating weight needs to reach 0.3～3.0g/m that the present invention selects the five roller coat leftover of bolt of cloth2Between, and this coating weight only has the coating system of more than five rollers just can accomplish.
During production, the aluminium foil after extrusion coated is introduced into drying unit, and drying unit is one for the present invention and selects to use item, when coating process needs just to open drying unit through drying and processing, is otherwise closed.The length of drying unit is 3～8 meters, is made up of some joint baking ovens, often saves baking oven baking oven and be furnished with three road air knives and air inlet/outlet EGR, use infrared heating or electrically heated mode.Product after drying unit enters light curring unit and solidifies.
Embodiment 1
Present embodiments provide the technique using photocuring coating apparatus to produce hydrophilic aluminium foil.First the plain aluminium foil of 100 μm of * 1000mm specifications is carried out alkali cleaning drying in alkali pond, remove surface grease.To be installed to above unwinding device A through the aluminium foil that alkali cleaning is processed.Coating is placed between the 4th applicator roll 4 and the 5th applicator roll 5, the baffle plate 6 of both sides is clamped placement coating and overflows, 50 DEG C are heated to five applicator rolls, make the viscosity of coating reduce and be suitable for coating.Aluminium foil being passed through deflector roll, entering drying unit B3, subsequently into ultraviolet curing device B2, finally complete rolling at wrap-up C after between the first applicator roll 1 and the second applicator roll 2 after being coated with, whole flow process is as shown in Figure 1.Drying unit does not start in the present embodiment; ultraviolet curing device uses double lamp work (double lamp power are 17KW*2); power is used to be the 60% of rated power; cavity inflated with nitrogen protects (oxygen content is below 1%); coating machine speed is 100m/min; it is first coated with primary coat, be coated topcoating.The viscosity when 50 DEG C for the primary coat is 800CPS, and coating weight is 0.9g/m2；The viscosity when 50 degree for the topcoating is 500CPS, and coating weight is 0.6g/m2, the dry and comfortable expression in coating solidification rear surface completion of cure.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned particular implementation, those skilled in the art can make various deformation or modification within the scope of the claims, and this has no effect on the flesh and blood of the present invention.
Claims (10)
1. the photocuring coating apparatus being applicable to hydrophilic aluminium foil coating, it is characterised in that include from side to separately
An aluminium foil unwinding device, several coater units and an aluminium foil wrap-up, the described painting that side sets gradually
Many coating device that cloth unit includes being set gradually to aluminium foil wrap-up by aluminium foil unwinding device, drying unit and
Light curring unit, described many coating device comprise some applicator rolls, and described light curring unit includes light source and cooling
Roller.
2. photocuring coating apparatus as claimed in claim 1, it is characterised in that the quantity of described applicator roll is five
Individual, the line of five applicator rolls is L-shaped, and wherein, two applicator rolls are vertically arranged, and two applicator rolls are horizontally arranged,
Two applicator rolls being vertically arranged all can in the vertical direction translation, two horizontally arranged applicator rolls all can be in level
Translation on direction.
3. photocuring coating apparatus as claimed in claim 2, it is characterised in that two horizontally arranged described paintings
Cloth rewinder roll be respectively arranged at the two ends with a baffle plate.
4. photocuring coating apparatus as claimed in claim 1, it is characterised in that described aluminium foil wrap-up and aluminium
Paper tinsel unwinding device all uses Double Tops to bore or air-expanding shaft drives.
5. photocuring coating apparatus as claimed in claim 1, it is characterised in that described light source includes lampshade and sets
The many mercury lamps being placed in described lampshade, are filled with inert gas in the space in described lampshade.
6. photocuring coating apparatus as claimed in claim 5, it is characterised in that described mercury lamp edge is perpendicular to base material
The direction vertical arrangement advanced.
7. photocuring coating apparatus as claimed in claim 6, it is characterised in that between adjacent two described mercury lamps
Distance be 3～30cm.
8. photocuring coating apparatus as claimed in claim 1, it is characterised in that described applicator roll and chill roll are equal
For hollow roll body.
9. the coating process based on the photocuring coating apparatus described in claim 1, it is characterised in that include
Following steps:
Aluminium foil, after unwinding device unreels, enters the applicator roll in many coating device by deflector roll, adjusts coating
The position of roller makes adjacent applicator roll be in close contact, and carries out the coating of coating；
Aluminium foil after coated is derived by deflector roll, after drying unit, imports in the light source in light curring unit,
Carry out photocuring；
Aluminium foil after photocuring is imported in cooling device by deflector roll and cools down；
Aluminium foil after cooling is carried out rolling by wrap-up, completes the coating of aluminium foil.
10. coating process as claimed in claim 9, it is characterised in that the ultraviolet light wave of described mercury lamp is a length of
200～420nm, the radial power density of mercury lamp fluorescent tube is 100～200W/cm, the hull-skin temperature of described applicator roll
Being 20～60 DEG C, the hull-skin temperature of described chill roll is 15～25 DEG C, and the rotating ratio of two described applicator rolls is 15:
When 100, coating weight is 1.0g/m2, a length of 280～365nm of ultraviolet light wave of described mercury lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510100427.3A CN105983514A (en) | 2015-03-06 | 2015-03-06 | Photocuring coating device applicable to hydrophilic aluminum foil coating and coating method based on device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510100427.3A CN105983514A (en) | 2015-03-06 | 2015-03-06 | Photocuring coating device applicable to hydrophilic aluminum foil coating and coating method based on device |
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| CN105983514A true CN105983514A (en) | 2016-10-05 |
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| CN201510100427.3A Pending CN105983514A (en) | 2015-03-06 | 2015-03-06 | Photocuring coating device applicable to hydrophilic aluminum foil coating and coating method based on device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113883882A (en) * | 2021-08-23 | 2022-01-04 | 茌平阳之光亲水箔有限公司 | Energy-saving and consumption-reducing system and method for hydrophilic foil processing |
| WO2022134737A1 (en) * | 2020-12-22 | 2022-06-30 | 常州山由帝杉防护材料制造有限公司 | Special device for preparing photocatalytic antibacterial coating |
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Application publication date: 20161005 |