CN105425323A - Impressing roller and coating equipment for preparing ultraviolet curing coating - Google Patents
Impressing roller and coating equipment for preparing ultraviolet curing coating Download PDFInfo
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Abstract
The invention relates to solvent-free ultraviolet (UV) coating impression equipment, and particularly relates to an impressing roller and coating equipment for preparing an ultraviolet curing coating. In order to solve the problem that the existing solvent-free UV impression equipment cannot cure a UV coating on an opaque material, the invention provides an impressing roller and coating equipment for preparing an ultraviolet curing coating. The equipment comprises an uncoiling system, a coating liquid coating system, a traction and tension control system, a UV photo-curing impression system and a coiling system; the UV photo-curing impression system is composed of a glass impressing roller and a UV lamp which is arranged in the glass impressing roller, and the light source of the UV lamp is an LED (Light Emitting Diode). The equipment can be used for coating and curing of solvent-free coatings on transparent and opaque coiled materials, so that the application range of the equipment is enlarged; meanwhile, as for a base film with a protective film on the non-coated surface, the base film can be coated while the protective film is retained, so that the equipment achieves a protection effect and can reduce the cost.
Description
Technical field
The present invention relates to optical thin film, particularly no-solvent ultraviolet (UV) is coated with Embosser, is specifically related to a kind of roller platen for the preparation of ultraviolet curable coating and coating apparatus.
Background technology
The method that no-solvent ultraviolet curing volume to volume produces various function film has been widely used in producing heat dissipation film, cured film, brightness enhancement film, lenticule diffusion barrier, cloudy surface film and various decorating film, preparation method as described in Chinese patent application CN102520465B " a kind of preparation method of optical thin film ", the preparation method described in Chinese patent ZL201420145111.7 " equipment and ultraviolet light polymerization optical hardening film for the preparation of ultraviolet light polymerization optical hardening film "; Adopt this preparation method, ultraviolet light needs uncoated the irradiation from base material, through the no-solvent ultraviolet curing coating remake after base material for being sandwiched between base material and mould running roller, to make curing of coatings, therefore base material must be transparent or semitransparent plastic sheeting, and ultraviolet light polymerization coating can not be carried out on opaque base material, as opaque base materials such as white PET film, paper, Copper Foil and aluminium foils; This method also has other some problems, and such as uviol lamp is in basement membrane side, and ultraviolet light first contacts and through basement membrane, bad to some temperature tolerances, just have infringement to the basement membrane of ultraviolet-sensitive, even can not use this preparation method; Be the cured film of base material to some with polyester (PET) film, non-hardened face, generally as printing surface, scribbles easy following layer in advance, adopt in this way, ultraviolet light is directly radiated on easy following layer, can cause the rotten of easy following layer, affect the adhesion of follow-up printing; In addition; to the sclerosis being base material with optical grade film; the non-hardened face of optical grade base material is general also with diaphragm; adopt in this way; for avoiding high temperature and ultraviolet light to the damage of diaphragm glue-line, also in order to avoid diaphragm absorbs the stop of ultraviolet light, the diaphragm of non-hardened face generally also to be torn; stick new diaphragm again after having hardened, cause artificial and waste of material.
Summary of the invention
The problem of UV curing of coatings process can not be carried out to solve existing solvent-free UV Embosser on opaque material, the invention provides a kind of roller platen for the preparation of ultraviolet curable coating and coating apparatus.Equipment of the present invention can carry out coating and the solidification of solvent-free coating on transparent and opaque coiled material; expand the range of application of equipment, simultaneously to the uncoated basement membrane wearing diaphragm, can be coated with by reservation protection film; not only play a protective role, can also be cost-saving.This equipment can be used for preparing ultraviolet light polymerization cured film (be called for short UV and solidify cured film), heat dissipation film.
In order to solve the problems of the technologies described above, the present invention adopts following technical proposals:
The invention provides a kind of roller platen for the preparation of ultraviolet curable coating, described roller platen comprises impression face, and inside, impression face is set to cavity, is provided with ultraviolet curing device in described cavity.
The impression face of described roller platen is transparent material, and the ultraviolet light that ultraviolet curing device sends passes ultraviolet curable coating faced by transparent impression and is cured.
The material in the impression face of described roller platen is transparent optical grade glass.
Further, the material in the impression face of described roller platen is quartz glass.
The present invention also provides a kind of coating apparatus impressing cured film (or heat dissipation film) for the preparation of solvent-free UV, and described equipment comprises the system of unreeling, feeding system, traction and tension control system, UV photocuring impression system and winding system; Described UV photocuring impression system comprises rubber roll (also referred to as rubber roller or rubber roller), glass roller platen and ultraviolet curing device, and described ultraviolet curing device is built in glass roller platen; Described glass roller platen is roller platen of the present invention.
Further, the job operation of the surface structure of described roller platen, according to the difference of structure, can adopt the surface treatment methods such as grinding and polishing, chemical etching, mechanical engraving, sandblasting and Laser Processing.
Further, described roller platen is the mirror roller of quartz glass material, and roll surface roughness Ra is 0.006 micron.
Further, described roller platen is the cloudy surface roller of the blasting treatment of quartz glass material, and roll surface roughness Ra is 0.45 μm-1.6 μm.This mirror roller can be used to the hardening coat preparing cloudy surface cured film, the antiscratch coatings of reflectance coating, the thermal dispersant coatings of heat dissipation film.
Further, described traction and tension control system comprise rubber roller and deflector roll.
Further, the ultraviolet source of described ultraviolet light device is mercury lamp, Non-polarized lamp, metal halide lamp or LED.Described ultraviolet source is preferably LED.
Further, described ultraviolet curing device comprises uviol lamp, and the top of uviol lamp is provided with water cooling heat exchanger, and water cooling heat exchanger is connected with external water pipe.
Further, described ultraviolet curing device also comprises ultraviolet light curing device forced air cooled tube.
Further, described uviol lamp is connected with uviol lamp power lead and control line.
Further, described for the preparation of in the roller platen of ultraviolet curable coating, described roller platen is glass roller platen, and described glass roller platen is arranged in bearing by glass roller platen bolster, and glass roller platen can rotate in bearing; Glass roller platen bolster is drum, and the through hole that cylinder surrounds is connected with the internal cavities of glass roller platen; Described external water pipe, uviol lamp power lead and control line, ultraviolet light curing device forced air cooled tube, the equipment that through hole and glass through glass roller platen bolster impress pipe outside is connected.
The heat that lamp source produces is taken away by the water cooling heat exchanger be connected with lamp source and cold wind regulating device, to keep the stable of roller platen temperature.
The present invention also provides a kind of coating apparatus, and described equipment comprises the system of unreeling, feeding system, rubber roller (abbreviation rubber roll), glass roller platen, ultraviolet curing device, deflector roll, winding system; Described glass roller is the described roller platen for the preparation of ultraviolet curable coating.
The method utilizing above-mentioned coating apparatus to prepare ultraviolet curable coating comprises following processing step:
(1) base material unreels: by unreeling system by base film by given speed and tension force supply masking liquid feeding system (masking liquid feeding system is also referred to as liquid-supplying system);
(2) masking liquid supply: by feeding system, solvent-free photocuring masking liquid is pressed given coating weight even application on the surface of base film, liquid-supplying system can adopt showering, roller coat and other form;
(3) impress: the solvent-free masking liquid of coated substrate film surface rolls through rubber roller and glass roller platen, the microstructure on roller platen surface is transferred to and is attached on the solvent-free masking liquid of base film;
(4) ultraviolet light polymerization: while impression, utilize the ultraviolet curing device being placed in glass roller platen inside to be cured from the top of coating the solvent-free photocuring masking liquid after impression, the coating after solidification is attached on base film;
(5) rolling: impress the film after solidification through deflector roll, by winding system rolling.
Further, in the curing process, the external UV lamp of existing equipment may cause harmful effect to basement membrane to existing ultraviolet curable coating, and the roller platen for the preparation of ultraviolet curable coating provided by the invention and coating apparatus also solve the problems referred to above.Utilize roller platen provided by the invention and coating apparatus can carry out ultraviolet light polymerization process to transparent and opaque substrate surface, expand the range of application of ultraviolet curable coating, less to the harmful effect of basement membrane.
Compared with prior art, the present invention has following improvement and advantage: the embossed metal roller that prior art uses by the present invention changes glass roller platen into, and it is inner ultraviolet lamp to be built in glass roller platen, UV light permeability glass directly acts on no-solvent ultraviolet curing coating, therefore to the transparency not requirement of base material, ultraviolet light polymerization coating can be carried out on transparent, translucent or opaque base material, expand the substrate applications scope of volume to volume no-solvent ultraviolet curing coating; The present invention also expands the application to hot and that ultraviolet light is comparatively responsive base material, and base material can be coated with the diaphragm of uncoated, avoids the scratch to uncoated in coating process, it also avoid the ancillary cost of multiple pasting protective film; Ultraviolet curing device is built in glass roller platen simultaneously, and light irradiates from top to bottom, and ultraviolet light can be avoided to shine directly into operating personnel.
Accompanying drawing explanation
Fig. 1 is the process flow diagram utilizing roller platen provided by the invention and coating apparatus to prepare ultraviolet curable coating;
Wherein: 1: unreel system; 2: base material; 3: feeding system; 4: rubber roller; 5: glass roller platen; 6: ultraviolet curing device; 7: deflector roll; 8: the base material having ultraviolet curable coating; 9: winding system.
Fig. 2 is the structural representation of glass roller platen provided by the invention;
Wherein: 51: glass roller platen; 52: glass roller platen bolster; 53: bearing; 61: uviol lamp; 62: water cooling heat exchanger; 63: external water pipe; 64: uviol lamp power lead and control line; 65: ultraviolet light curing device forced air cooled tube (also referred to as ultraviolet light curing device cold wind induction pipe, being called for short forced air cooled tube).
Fig. 3 is from sectional view in the middle part of the glass roller platen of equipment of the present invention;
Wherein 501 is glass rolls, and 601 is uviol lamp (4 row's LED), and 602 is water cooling heat exchanger pipes.
Embodiment
In order to be more readily understood structure of the present invention and the functional character that can reach and advantage, hereafter by preferred embodiment of the present invention, and coordinate graphic being described below in detail:
As depicted in figs. 1 and 2, the invention provides a kind of equipment impressing cured film for the preparation of solvent-free UV.Described equipment comprises the system of unreeling 1, feeding system (or claiming coating solution system) 3, traction and tension control system, UV photocuring impression system and winding system 9; Described UV photocuring impression system is made up of rubber roll 4, glass roller platen 5 and ultraviolet curing device 6, and ultraviolet curing device 6 is built in glass roller platen 5.Described ultraviolet curing device 6 is UV lamp, and the light source of UV lamp is LED.Described rubber roll 4 also plays traction and tension force control action, so described traction and tension control system comprise rubber roller 4 and deflector roll 7.
As depicted in figs. 1 and 2, the method utilizing roller platen provided by the invention to prepare ultraviolet curable coating comprises following processing step:
(1) unreel: by unreeling system 1 by base film 2 by given speed and tension force supply masking liquid feeding system 3;
(2) masking liquid supply: solvent-free photocuring masking liquid is pressed given coating weight even application on the surface of base film 2 by feeding system 3, feeding system (or claiming liquid-supplying system) can adopt showering, roller coat and other form;
(3) impress: the solvent-free masking liquid of coated substrate film surface rolls through rubber roll 4 and roller platen 5, the microstructure on roller platen 5 surface is transferred to and is attached on the solvent-free masking liquid of base film;
(4) ultraviolet light polymerization: while impression, utilizes ultraviolet curing device 6 to be cured the solvent-free photocuring masking liquid after impression;
(5) rolling: impress the base material 8 after solidification through deflector roll 7, by winding system 9 rolling.
As shown in Figure 2, the invention provides a kind of glass roller platen for the preparation of ultraviolet curable coating.The inside of this glass roller platen 51 is cavity, ultraviolet curing device 6 is provided with in the cavity of glass roller platen inside, described ultraviolet curing device 6 comprises uviol lamp 61, and the top of uviol lamp 61 is provided with water cooling heat exchanger 62, and water cooling heat exchanger 62 is connected with external water pipe 63; Uviol lamp 61 is connected with uviol lamp power lead and control line 64; Ultraviolet light curing device cold wind induction pipe (abbreviation forced air cooled tube) 65.Glass roller platen 51 is arranged in bearing 53 by glass roller platen bolster 52, and glass roller platen 51 can rotate in bearing 53.Glass roller platen bolster 52 is drums, and the through hole that cylinder surrounds is connected with the internal cavities of glass roller platen.Described external water pipe 63; Uviol lamp power lead and control line 64, ultraviolet light curing device cold wind induction pipe 65 is connected with the equipment that glass impresses pipe outside through the through hole of glass roller platen bolster 52, the heat that described uviol lamp 61 produces is taken away by the water cooling heat exchanger 62 be connected with lamp source and forced air cooled tube 65, to keep the stable of roller platen temperature.
As shown in Figure 3, the roller platen for the preparation of ultraviolet curable coating provided by the invention, described roller platen comprises impression face 501, and inside, impression face is set to cavity, is provided with ultraviolet curing device in described cavity.Described ultraviolet curing device comprises uviol lamp 601, and the top of uviol lamp is provided with water cooling heat exchanger pipe 602.
Ultraviolet lamp is built in glass roller platen by the present invention, general glass absorbs larger to the UVB wave band (medium wave) of ultraviolet light and UVC wave band (shortwave), quartz glass does not almost have anything to absorb to full wave ultraviolet light, and therefore preferred quartz glass is as roller platen material.If adopt general glass material to do roller platen, can select the LED uviol lamp of UVA wave band (long wave), corresponding photoactive coating also needs to select the light trigger being applicable to UVA wave band.
Ultraviolet lamp is built in glass roller platen by the present invention, because of limited space, the thermal value of uviol lamp is little as far as possible, therefore the preferred LED uviol lamp that gets up of developed recently, link with the mode of module and cold water heat exchange module, add air cooling equipment to take away uviol lamp thermal value and to control roller platen temperature.
Ultraviolet lamp is built in glass roller platen by the present invention, the coating process on surface can be carried out to coiled material by no-solvent ultraviolet curing method on various coiled material, prepare the coating material of several functions, plastic film is as PET, PC, PMMA, TAC and PVC etc., metal coiled material is as Copper Foil and aluminium foil, and papery ornament materials.
Below in conjunction with specific embodiment, technical scheme provided by the invention is described further.The method of testing of the performance of products obtained therefrom is summarized as follows:
1, mist degree, transmittance: utilize haze meter (being manufactured by upper Nereid's tech device Manufacturing Co., Ltd, model WGT-S) to measure total transmittance (T) and mist degree (H).
2, pencil hardness: according to the method for standard GB/T6739-1996, utilizes the hardness of film tester (Guangzhou De Manyi Instrument Ltd., model: BY) of being swiped by pencil to test.
3, scratch degree: loaded by reflectance coating in backlight module, then puts into the vibrations experiment that vibration box carries out 2 hours, after having tested, takes out backlight module, observe the scratch situation of light guide plate lower surface and reflectance coating upper surface by backlight module.Vibrations experiment: vibration frequency 5-100HZ, 31 seconds used times, 100-5HZ, 31 seconds used times.Horizontal and vertical direction respectively shakes 1 hour.
4, cutting property: heat dissipation film is cut into 24mm × 14mm size with fully-automatic metal foil cutter, each 10 of the product that cutting embodiment and comparative example provide, observe otch section and whether have coating shedding situation, be not considered as OK (qualified), otherwise NG (defective).
5, heat dispersion: by the temperature of incubator set point at about 30 DEG C, put into measured object (heat dissipation film), pyrotoxin is placed in the bottom of the metal base of heat dissipation film, power supply unit is used to export 4.8W to pyrotoxin, test heat source temperature, thermal dispersant coatings surface temperature, constant temperature oven interior environment temperature and ambient temperature with thermocouple probe, be accurate to one decimal place and record.
6, adhesion: with reference to the cross cut test of standard GB/T-T9286-1998 paint and varnish paint film.
Embodiment 1
Coating apparatus provided by the invention is used to prepare the cured film of high transparency high rigidity.Cured film comprises basement membrane and hardening coat.The basement membrane used in the present embodiment spins the A4300 transparent optical level PET film of production for Japanese Japan, and fabric width is 1020mm, and thickness is 188 μm.Hardening coat thickness is about 4 μm, and coating speed is 10m/min, UV energy 500mJ/cm
2, prepare the cured film of high transparency high rigidity.
Roller platen is the mirror roller of quartz glass material, and roll surface roughness Ra is 0.006 micron.
The raw material of hardening coat is first mixed with no-solvent ultraviolet curing masking liquid, proportioning is: 6 official's aliphatic urethane acrylates (EBECRYL8254 of the special Chemical Manufacture of U.S.'s cyanogen) of 25%, 6 official's aliphatic urethane acrylates (CN968 of Guangzhou Sartomer chemical production) of 15%, 2 official's aliphatic urethane acrylates (CN8010 of Guangzhou Sartomer chemical production) of 10%, the dipentaerythritol acrylate (DPHA of Guangzhou Sartomer chemical production) of 10%, 35% 1, 6-hexanediyl ester (SR238 that Guangzhou Sartomer chemical company produces), 184 trigger for optical solidification (Chinese Changzhou Hua Tai chemical company produces) of 5%.
The main performance of the PET cured film prepared is as shown in table 1.
Embodiment 2
Coating apparatus provided by the invention is used to prepare the wear-resisting cloudy surface cured film that can be applicable to notebook computer touchpad.Cured film comprises basement membrane and hardening coat.The basement membrane used in the present embodiment is the transparent optical classes and grades in school PC film PC8010 base material of husky uncle's radical innovations Plastics Company, and fabric width is 914mm, and thickness is 380 μm, and coating thickness is about 10 μm, and coating speed is 8m/min, UV energy 800mJ/cm
2, use the masking liquid of formula in the same manner as in Example 1, prepare wear-resisting cloudy surface cured film.
Roller platen is the cloudy surface roller of the blasting treatment of quartz glass material, and roll surface roughness Ra is 1.5 μm.
The main performance of the PC cloudy surface cured film prepared is as shown in table 1.
Embodiment 3
The opaque white color PET film used in the present embodiment is not coated with the reflectance coating of process for CY50G that Jiangsu Yu Xing film scientific & technical corporation produces, fabric width is 1020mm, thickness is 125 μm, this reflectance coating adds titania in PET resin, form cavity through extruding to stretch, light reflects in cavity.The material of this reflectance coating is softer, the assembling of thin-type backlight module, transport and application time, easily produce folding line and scratch, for solving this problem, generally will coating on its surface by wet coating last layer band particle.Adopt equipment of the present invention, under the condition of not adding particle and solvent, one deck no-solvent ultraviolet curing masking liquid can be coated with on the surface of this reflectance coating, thus produce the reflectance coating with effect same.
Application conditions: coating thickness is about 6 μm, coating speed is 8m/min, UV energy 600mJ/cm
2, prepare the reflectance coating of scratch-proof light guide plate and anti-injured.
Roller platen is the cloudy surface roller of quartz glass material, surface band blasting treatment, and roll surface roughness Ra is 1.6 μm.
No-solvent ultraviolet curing masking liquid proportioning is: 2 official's aliphatic urethane acrylates (CN996 of Guangzhou Sartomer chemical production) of 35%, 2 official's aliphatic urethane acrylates (CN991 of Guangzhou Sartomer chemical production) of 15%, 2 official's aliphatic urethane acrylates (CN8010 of Guangzhou Sartomer chemical production) of 15%, 30% 1, 6-hexanediyl ester (SR238 that Guangzhou Sartomer chemical company produces), 184 trigger for optical solidification (Chinese Changzhou Hua Tai chemical company produces) of 5%, the irregular microstructure in white PET reflectance coating surface prepared, contacting with light guide plate in backlight module uses can not scratch light guide plate, reduce with light guide plate contact area simultaneously, not easily injured.
Embodiment 4
Use coating apparatus provided by the invention for the preparation of the heat dissipation film on the electronic products such as mobile phone.Use Copper Foil (production of Ming Yu metal material (Shanghai) Co., Ltd.) to be base material in the present embodiment, fabric width is 500mm, and thickness is 46 μm, and coating thickness is about 20 μm, and coating speed is 5m/min, UV energy 900mJ/cm
2, prepare heat dissipation film.
Roller platen is the cloudy surface roller through blasting treatment of quartz glass material, and roll surface roughness Ra is 1.6 μm.
Being prepared as follows of the no-solvent ultraviolet curing masking liquid of heat dissipation film:
First take 15g carbon nano-tube (diameter: 30-50nm, length 150nm) put into the mono-official's acrylate monomer of 82g (SR339 that Guangzhou Sartomer produces), under 1500 revs/min of stirring conditions, be added dropwise in above-mentioned solution with the speed of 0.2ml/min by the polyglycol of 3g, at room temperature stirring or ultrasonic dispersion 10-120min are to being uniformly dispersed; Disperse 30min, ultrasonic dispersion 90min by extra-high-pressure nano homogenizer again, obtain finely dispersed inorganic heat radiation nano-grade material slurry.
Then, take 80g tetra-official UV cured acrylate (SR295 that Guangzhou Sartomer produces), by the inorganic heat radiation nano-grade material slurry of 15g, be added dropwise in above-mentioned solution with 0.5ml/min under 1500 revs/min of mechanical raking, stir after 60 minutes, add 5g light trigger 184 (Chinese Changzhou Hua Tai company produces), continue stirring 20 minutes, add the levelling agent (BYK333 of 10g again, Bi Ke (BYK) company of Germany produces), stir after 30 minutes, filter and obtain ultraviolet light polymerization Heat dissipation composition.
The heat dissipation film that the present embodiment prepares, when heat source temperature is about 100 DEG C, through heat dispersion test in 90 minutes, this heat dissipation film can make heat source temperature reduce about 7 DEG C, shows good heat dispersion.
Comparative example 1
The material described in embodiment 1 is utilized to prepare cured film, the solvent-free uv equipment that the coating apparatus used is routine, unreel system, winding system, feeding system all identical with the UV photocuring system shown in Fig. 1, difference is installation site and the radiation modality of roller platen and UV lamp.The UV lamp of conventional UV impression is installed on outside roller platen, and the material of roller platen is chrome faced steel rider, and surfaceness is identical with embodiment 1, and other coating process parameter is also identical with embodiment 1.The performance of gained cured film is as shown in table 1.
Comparative example 2
Utilize the material described in embodiment 2 to prepare cured film, the coating apparatus of use is the solvent-free UV Embosser of the routine described in comparative example 1.Roller platen is stainless steel, and surface structure and roughness are identical with embodiment 2.The performance of gained cured film is as shown in table 1.
The testing result of table 1 embodiment 1-2 and comparative example 1-2 products obtained therefrom
| Project | Obtained product | Surfaceness | Hardness | Mist degree | Transmittance |
| Embodiment 1 | Bright cured film | 0.016μm | 3H/750g | 0.7％ | 91.4％ |
| Embodiment 2 | Cloudy surface cured film | 1.5μm | F/750g | 34％ | 91％ |
| Comparative example 1 | Bright cured film | 0.0211μm | 3H/750g | 0.9％ | 91.2％ |
| Comparative example 2 | Cloudy surface cured film | 1.5μm | F/750g | 35％ | 90％ |
Can be drawn by the testing result of table 1 above, equipment provided by the invention is in curing of coatings process, less on the impact of transparent base, and the transmittance of the cured film prepared is higher.
Comparative example 3
Existing equipment is used to prepare anti scuffing reflectance coating.The conventional production process of anti scuffing reflectance coating is solvent coating method, the concavo-convex particle by adding in masking liquid of coating surface is formed, utilize the masking liquid material 100kg described in embodiment 3, add PMMA (polymethylmethacrylate) particle of 15kg, mean grain size is 5 μm; Add the butyl acetate of 50kg and the toluene solvant of 50kg, and the levelling agent of 0.5kg, stir obtained masking liquid.By masking liquid roll coating model, be coated on CY50G tunica albuginea, obtain anti scuffing reflectance coating after coating drying through UV photocuring, coating thickness is about 6 μm.The performance of gained anti scuffing reflectance coating is as shown in table 2.
Comparative example 4
The CY50G reflectance coating that Jiangsu Yu Xing film scientific & technical corporation produces.
Comparative example 5
The UX188 reflectance coating that Teijin Ltd of Japan produces.
The testing result of table 2 embodiment 3 and comparative example 3,4 and 5 products obtained therefrom
Can be drawn by the testing result of table 2 above, equipment provided by the invention may be used for the solidification of the coating on the surface of opaque basement membrane, and the scratch resistant performance of the reflectance coating prepared is good.
Comparative example 6
Use existing equipment to prepare heat dissipation film, the conventional production process of heat dissipation film is solvent coating method, and utilize the masking liquid material 100kg described in embodiment 4, add the cyclohexanone solvent of the butyl acetate of 25kg, the isopropyl alcohol of 25kg and 25kg, stir obtained masking liquid.Masking liquid is used scraper for coating mode, masking liquid coated by the Copper Foil that embodiment 4 is identical, obtains heat dissipation film after coating drying through UV photocuring, coating thickness is about 20 μm.The performance of gained heat dissipation film is as shown in table 3.
The testing result of table 3 embodiment 4 and comparative example 6 products obtained therefrom
Can be drawn by the testing result of table 3, the heat dissipation film that embodiment 4 utilizes equipment provided by the invention to prepare makes heat source temperature reduce by 6.3 DEG C (blank sample heat source temperature deducts the surface temperature of heat dissipation film in embodiment), comparative example 6 obtains heat dissipation film and makes heat source temperature decline 5.2 degree (blank sample heat source temperature deducts the surface temperature of heat dissipation film in comparative example), and the heat dispersion of the heat dissipation film utilizing equipment provided by the invention to prepare is better than comparative example.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Every equalization done according to content of the present invention changes and modifies, and is all encompassed in the scope of the claims of the present invention.
Claims (10)
1. for the preparation of a roller platen for ultraviolet curable coating, it is characterized in that, described roller platen comprises impression face, and inside, impression face is set to cavity, is provided with ultraviolet curing device in described cavity.
2. the roller platen for the preparation of ultraviolet curable coating according to claim 1, is characterized in that, the material in the impression face of described roller platen is quartz glass.
3. impress a coating apparatus for cured film for the preparation of solvent-free UV, it is characterized in that, described equipment comprises the system of unreeling, feeding system, traction and tension control system, UV photocuring impression system and winding system; Described UV photocuring impression system comprises rubber roll, glass roller platen and ultraviolet curing device, and described ultraviolet curing device is built in glass roller platen; Described glass roller platen is roller platen according to claim 2.
4. the roller platen for the preparation of ultraviolet curable coating according to claim 1, is characterized in that, described roller platen is the mirror roller of quartz glass material, and roll surface roughness Ra is 0.006 micron.
5. the roller platen for the preparation of ultraviolet curable coating according to claim 3, is characterized in that, described traction and tension control system comprise rubber roller and deflector roll.
6. the roller platen for the preparation of ultraviolet curable coating according to claim 1, is characterized in that, described ultraviolet curing device comprises uviol lamp, and the top of uviol lamp is provided with water cooling heat exchanger, and water cooling heat exchanger is connected with external water pipe.
7. the roller platen for the preparation of ultraviolet curable coating according to claim 6, is characterized in that, described ultraviolet curing device also comprises ultraviolet light curing device forced air cooled tube.
8. the roller platen for the preparation of ultraviolet curable coating according to claim 7, is characterized in that, described uviol lamp is connected with uviol lamp power lead and control line.
9. the roller platen for the preparation of ultraviolet curable coating according to claim 8, it is characterized in that, described roller platen is glass roller platen, and described glass roller platen is arranged in bearing by glass roller platen bolster, and glass roller platen can rotate in bearing; Glass roller platen bolster is drum, and the through hole that cylinder surrounds is connected with the internal cavities of glass roller platen; Described external water pipe, uviol lamp power lead and control line, ultraviolet light curing device forced air cooled tube, the equipment that through hole and glass through glass roller platen bolster impress pipe outside is connected.
10. a coating apparatus, is characterized in that, described equipment comprises the system of unreeling, feeding system, rubber roller, glass roller platen, ultraviolet curing device, deflector roll, winding system; Described glass roller is the roller platen for the preparation of ultraviolet curable coating according to claim 1.
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| CN114632681A (en) * | 2022-03-31 | 2022-06-17 | 广东莱尔新材料科技股份有限公司 | UV curing conveying roller for wafer protective film and preparation method thereof |
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