CN102416373A - High gloss coating process of surface of plastic substrate - Google Patents
High gloss coating process of surface of plastic substrate Download PDFInfo
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- CN102416373A CN102416373A CN2011102834057A CN201110283405A CN102416373A CN 102416373 A CN102416373 A CN 102416373A CN 2011102834057 A CN2011102834057 A CN 2011102834057A CN 201110283405 A CN201110283405 A CN 201110283405A CN 102416373 A CN102416373 A CN 102416373A
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Abstract
The invention relates to the technical field of material surface treatment, and in particular relates to a high gloss coating process of the surface of a plastic substrate. The process comprises the following steps of: A. cleaning, B. surface pretreatment, C. coating blending, D. surface spraying, E. standing and F. roasting. The process has the following beneficial effects that: by controlling the processing technic conditions, the problems easily occurring on the surface of the product such as oil deposition, pitted surface, particles, picture frame effect and the like are effectively reduced; therefore the product surface has good levelling property, the formed coat is dense and uniform, the surface is bright and the polishing yield and first yield of the finished product of the plastic substrate are high; and besides, the adhesive property of the coating on the surface of the plastic substrate is improved by spraying the diluted coating on the surface of the plastic substrate, thus ensuring the uniformity of the coat and improving the product percent of pass.
Description
Technical field
The present invention relates to the surface treatment technology of material field, particularly a kind of surperficial high light coating process of plastic rubber substrate.
Background technology
The auto parts machinery that some are processed like Merlon plastics such as (PC), ethylene propylene diene rubber elastomeric materials such as (EPDM); Like air bag cover, console etc., behind substrate forming, need carry out sprayed surface; To improve product surface quality, the surface decoration effect that acquisition needs.At present, in order to reach the high light effect of plastic cement products case surface, mainly adopt two kinds of technologies: traditional uv radiation (UV) spraying coating process and quick-cooling and quick-warming high-light no-trace Shooting Technique.
Adopt quick-cooling and quick-warming high-light no-trace Shooting Technique, can make that product surface is smooth, surface gloss good, have vividness and decorative effect preferably.But because technical reason; When using this technology; Need expensive injection moulding peripheral equipment that the medium of quick-cooling and quick-warming and control device accurately are provided, for preventing to generate the high-light no-trace injection-die complex structure that weld mark is developed quick-cooling and quick-warming specially, costly; And need to adopt than common plastic material flowability better, can produce the plastic cement raw material of special high light effect.When injection moulding is produced, also need continuous grinding and polishing molding surface to obtain satisfied product surface effect, cause injection molding cycle to prolong, production efficiency descends, and the moulding yields is low, the technology cost is very high.
Adopt traditional UV spraying coating process; Aborning; Because fabrication process condition and the control of processing technology environment are improper, a series of problems such as long-pending oil, pitted skin, particle, picture frame effect appear in product surface easily, and polishing yield and a yield are low; Cause that finished product case surface levelability is relatively poor, aquatic foods degree of reflecting is lower, luster effect is undesirable.In addition, the coating in UV when spraying is the coating of commercially available not diluted in the prior art, and the viscosity of coating is 20～30 seconds usually; Because of its viscosity is big, the resistance during the plastic rubber substrate spraying is also big, and coating is relatively poor in the tack of substrate surface; Cause the plastic rubber substrate coating surfaces inhomogeneous; Phenomenons such as long-pending oil, pitted skin and picture frame effect take place easily, influence the total quality and the appearance of product, yields is low.
Summary of the invention
The objective of the invention is to the deficiency of prior art and provide a kind of effective solution plastic rubber substrate surface to produce long-pending oil, pitted skin, particle and picture frame effect, the surperficial high light coating process of the plastic rubber substrate that yield is high with polishing yield.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of surperficial high light coating process of plastic rubber substrate is provided, and it may further comprise the steps:
A, cleaning clean the plastic rubber substrate of moulding, remove the pollutant that adheres on plastic rubber substrate surface;
B, surface preparation, the UV-irradiation of plastic rubber substrate being sent into the UV-irradiation machine is regional, with UV-irradiation plastic rubber substrate surface, changes the micel structure on plastic rubber substrate surface;
C, modulation coating add curing agent and mixing diluents modulation, with the viscosity of dilution coating in the host of coating;
D, surface spraying are fixed on the plastic rubber substrate of accomplishing surface preparation in the spraying equipment, and the paint that modulates is applied to the plastic rubber substrate surface, accomplish the surface spraying of plastic rubber substrate;
E, leave standstill, the plastic rubber substrate after normal temperature will spray down left standstill 8～10 minutes, made coating evenly be coated in the plastic rubber substrate surface;
F, baking are put into roasting plant with the plastic rubber substrate after leaving standstill, and high-temperature baking makes paint solidification.
The present invention includes following further technical scheme.
Wherein, between step B and step C, also include step B1, fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal.
Wherein, among the said step C, coating is by host: the mixed of curing agent: diluent=8:1:4 is processed, and the temperature of coating is 18～25 ℃.
Wherein, among the said step C, the viscosity of coating is 8～11 seconds.
Wherein, said step D is specially, and the plastic rubber substrate of accomplishing surface preparation is fixed in the spraying equipment; The coating that modulates is packed in the spray gun; Spray gun sprays coating to the plastic rubber substrate surface, accomplishes the surface spraying of plastic rubber substrate, and the pressure that spues of spray gun is 4～5kg/cm
2, it is 3～4kg/cm that spraying swath is pressed
2
Wherein, among the said step D, the spraying rate of spray gun is 800～1500mm/s, and the distance on spray gun and plastic rubber substrate surface is 12～17cm.
Preferably; The front spraying rate of said spray gun is 1200～1500mm/s; The side spraying rate of said spray gun is 800～1000mm/s, and the positive distance of said spray gun and plastic rubber substrate is 15～17cm, and the distance of said spray gun and plastic rubber substrate side is 12～15cm.
Wherein, among the said step D, the spraying method of spray gun is four sprayings, and the spray angle of said spray gun is 60～75 degree.
Wherein, in the said step F, baking temperature is 70～80 ℃, and stoving time is 60～120 minutes.
Wherein, among the said step C, the space cleanliness factor of the working environment of modulation coating is not less than 100,000 grades; Among the said step D, the space cleanliness factor of the working environment of surface spraying is not less than 100,000 grades.
Beneficial effect of the present invention is: the surperficial high light coating process of plastic rubber substrate of the present invention may further comprise the steps: A, cleaning, the plastic rubber substrate of moulding is cleaned, and remove the pollutant that adheres on plastic rubber substrate surface; B, surface preparation, the UV-irradiation of plastic rubber substrate being sent into the UV-irradiation machine is regional, with UV-irradiation plastic rubber substrate surface, changes the micel structure on plastic rubber substrate surface; C, modulation coating add curing agent and mixing diluents modulation, with the viscosity of dilution coating in the host of coating; D, surface spraying are fixed on the plastic rubber substrate of accomplishing surface preparation in the spraying equipment, and the paint that modulates is applied to the plastic rubber substrate surface, accomplish the surface spraying of plastic rubber substrate; E, leave standstill, the plastic rubber substrate after normal temperature will spray down left standstill 8～10 minutes, made coating evenly be coated in the plastic rubber substrate surface; F, baking are put into roasting plant with the plastic rubber substrate after leaving standstill, and high-temperature baking makes paint solidification.The present invention effectively reduces product surface and occurs problems such as long-pending oil, pitted skin, particle, picture frame effect easily through the control fabrication process condition, and the coating of finished surface good leveling property, formation is evenly fine and close, surface-brightening, polishing yield and a yield height; In addition, the paint after the present invention will dilute is coated in the plastic rubber substrate surface, improves the tack of coating on the plastic rubber substrate surface, guarantees that coating is even, and product percent of pass is high.
The specific embodiment
A kind of surperficial high light coating process of plastic rubber substrate may further comprise the steps:
A, cleaning clean the plastic rubber substrate of moulding, remove the pollutant that adheres on plastic rubber substrate surface; Remove plastic rubber substrate surface and oil contaminant, dust etc. through the cleaning mode of washing particularly and adhere to rubbish, to improve the surperficial coating quality of plastic rubber substrate; Wherein, said plastic basis material is ABS, PC or ABS and PC mixed plastic base material.
B, surface preparation, the UV-irradiation of plastic rubber substrate being sent into the UV-irradiation machine is regional, with UV-irradiation plastic rubber substrate surface, changes the micel structure on plastic rubber substrate surface; Carry plastic rubber substrate through said UV-irradiation zone with the transporting velocity of 0.8 m/min～6.5 m/min particularly, the ultraviolet energy value of UV-irradiation is 680 mj/cm
2～3400 mj/cm
2, the working space environment temperature when UV-irradiation is carried out on the plastic rubber substrate surface is no more than 100 ℃ so that plastic rubber substrate when carrying out the UV-irradiation operation temperature distortion amount little.Adopt UV-irradiation can eliminate plastic rubber substrate surface internal stress; Reorganization plastic rubber substrate surface molecular unity structure, thereby the surface tension and the surface adhesion force of raising plastic rubber substrate are in spraying process; Coating is good in the plastic rubber substrate surface attachment; Be difficult for producing the stress trace, difficult foaming comes off, and product surface quality is good.
The ultraviolet ray irradiation process; Claim the UV ultraviolet curing process again; Utilize in the UV ultraviolet light, shortwave (300-400 nanometer) is under the UV radiation; Light trigger irriate in the liquid UV material becomes free radical or cation, thereby causes the process that solid that the macromolecular material (resin) that contains active function groups cannot not aggregate into is moltenly filmed.
C, modulation coating add curing agent and mixing diluents modulation, with the viscosity of dilution coating in the host of coating; Coating is diluted to rational viscosity, and the resistance when reducing the plastic rubber substrate spraying improves the tack of coating at substrate surface, strengthens the levelability of coating on the plastic rubber substrate surface, guarantees that the plastic rubber substrate coating surfaces is even.
D, surface spraying are fixed on the plastic rubber substrate of accomplishing surface preparation in the spraying equipment, and the paint that modulates is applied to the plastic rubber substrate surface, accomplish the surface spraying of plastic rubber substrate; Utilize the coating after spray gun will dilute fully to atomize; Guarantee that the coating densification sprays on the plastic rubber substrate surface equably, improve the tack of coating to plastic rubber substrate, and spray rate is fast; Improve the application process velocity, the single plastic rubber substrate external coating time is 15～30 seconds.Accomplish the plastic rubber substrate of surface preparation, with 4～8cm apart from fixed interval on the anchor clamps of spraying equipment, be convenient to spray gun a plurality of plastic rubber substrates sprayed simultaneously, improve production and processing efficient and guarantee the plastic rubber substrate spraying evenly.Preferably, the spacing of plastic rubber substrate is 6cm, improves production and processing efficient, reduces production costs.
E, leave standstill, the plastic rubber substrate after normal temperature will spray down left standstill 8～10 minutes, made coating evenly be coated in the plastic rubber substrate surface; The plastic rubber substrate surface is through behind the UV-irradiation; Improved the tack of coating on the plastic rubber substrate surface; After the spraying plastic rubber substrate was left standstill 8～10 minutes at normal temperatures, effectively avoid the plastic rubber substrate surface to produce bubble, improve levelability and the ductility of coating on the plastic rubber substrate surface; Help coating and be adsorbed on the plastic rubber substrate surface better and form uniform paint film, spraying effect is good.Preferably, exhaust apparatus is set, in time the coating cloud that produces in the spraying process is arranged, reduce granule dust and be trapped in the spraying equipment, improve the space cleanliness factor of application processing in the district of leaving standstill in spray room.
F, baking are put into roasting plant with the plastic rubber substrate after leaving standstill, and high-temperature baking makes paint solidification, make coating rapidly attached to the plastic rubber substrate surface, accelerate the dryness finalization of paint film, improve production and processing efficient.
Plastic rubber substrate is after baking processing; The sand paper that satisfies the fine and closely woven degree requirement of frosted also capable of using polishes the particle of plastic rubber substrate remained on surface; Handle the external coating effect that improves plastic rubber substrate through frosted; Then the wax bar is wound on the emery wheel the processing of waxing of plastic rubber substrate surface, further improves the surface gloss of plastic rubber substrate.
The present invention utilizes UV-irradiation plastic rubber substrate surface, eliminates plastic rubber substrate surface internal stress, reorganization plastic rubber substrate surface molecular unity structure; Remove the static on plastic rubber substrate surface, thereby improve the surface tension and the surface adhesion force of plastic rubber substrate, in spraying process; Earlier coating is diluted, reduce the viscosity of coating, help the abundant atomizing of coating; Resistance when reducing the plastic rubber substrate spraying; Thereby help forming uniform paint film on the plastic rubber substrate surface, coating is good in the plastic rubber substrate surface attachment, and product surface quality is good.
Wherein, between step B and step C, also include step B1, fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal.The horizontal placement of plastic rubber substrate has reduced erecting highly of plastic rubber substrate, and the contact area of plastic rubber substrate and fixtures for painting is big, and good positioning effect in the spraying process effectively avoids plastic rubber substrate that sideslip takes place in spraying process, and painting effect is good, and the volume production feasibility is high.Wherein, fixtures for painting should spray paint before fixing plastic rubber substrate and handle the contaminating impurity plastic rubber substrates such as iron rust that prevent that chucking surface from producing.
Wherein, among the said step C, coating is by host: the mixed of curing agent: diluent=8:1:4 is processed, and the temperature of coating is 18～25 ℃.Wherein, host is PLANET PZ-II X12C LG25 (P-109056); Curing agent is POLYHARD Z-50 (GZ); Diluent is PLANET THINNER #743 (#743 NO.2), utilizes the reflective characteristic of blacking self, helps promoting the glossiness on plastic rubber substrate surface.Certainly, the present invention also can adopt other coating, as long as it can satisfy the painting effect of Gao Guang.The temperature of coating is 18～25 ℃, guarantees that host, curing agent and diluent fully mix, and the densification of the coating of modulation evenly avoids producing particle, helps improving painting effect.
Wherein, among the said step C, the viscosity of coating is 8～11 seconds.The dope viscosity dilution is 8～11 seconds, has reduced the viscosity of coating, helps the abundant atomizing of coating, the resistance when reducing the plastic rubber substrate spraying, thus help forming uniform paint film on the plastic rubber substrate surface, and paint film spontaneous curing speed is fast.
Wherein, said step D is specially, and the plastic rubber substrate of accomplishing surface preparation is fixed in the spraying equipment; The coating that modulates is packed in the spray gun; Spray gun sprays coating to the plastic rubber substrate surface, accomplishes the surface spraying of plastic rubber substrate, and the pressure that spues of spray gun is 4～5kg/cm
2, it is 3～4kg/cm that spraying swath is pressed
2Spuing of spray gun pressed and the excessive plastic rubber substrate surface a series of problems such as the long-pending oil of appearance, pitted skin, picture frame effect easily that then cause of spraying swath pressure; Pressure and the spraying swath pressure that spues is too small then to be unfavorable for the abundant atomizing of coating and to be unfavorable for that coating is stable attached to the plastic rubber substrate surface, with the voltage-controlled 4～5kg/cm that is made as of spuing of spray gun
2, the voltage-controlled 3～4kg/cm that is made as of spraying swath
2, helping the abundant atomizing of coating, coating is good at the adhesion property on plastic rubber substrate surface, avoids producing phenomenons such as long-pending oil, pitted skin and picture frame effect, and spraying effect is good.
Wherein, among the said step D, the spraying rate of spray gun is 800～1500mm/s, and the distance on spray gun and plastic rubber substrate surface is 12～17cm.Spraying rate is fast more, and then the spray time of plastic rubber substrate is short more, and spraying rate is 800～1500mm/s, guarantees that the spraying of plastic rubber substrate surface is even and shorten spray time, improves working (machining) efficiency; The distance on spray gun and plastic rubber substrate surface is too small, and the coating that from spray gun, sprays is excessive to the surface impacts dynamics of plastic rubber substrate and the area coverage spraying that single sprays is little; When the distance on spray gun and plastic rubber substrate surface was excessive, the pressure that spues of coating was too small, is unfavorable for that coating is adsorbed on the plastic rubber substrate surface rapidly; The distance on spray gun and plastic rubber substrate surface is 12～17cm, guarantees that ADHESION OF PAINTS property is good, and it is good to shorten spray process time and spraying effect.
Preferably; The front spraying rate of said spray gun is 1200～1500mm/s; The side spraying rate of said spray gun is 800～1000mm/s, and the positive distance of said spray gun and plastic rubber substrate is 15～17cm, and the distance of said spray gun and plastic rubber substrate side is 12～15cm.Guarantee that plastic rubber substrate coating the tack positive and side is good, crudy is high.
Wherein, among the said step D, the spraying method of spray gun is four sprayings, and the spray angle of said spray gun is 60～75 degree.Particularly, four sprayings are: spraying for the first time, the spray gun spraying of turning left from the right side along the plastic rubber substrate surface in the horizontal direction; Spraying for the second time, after spray gun revolves and turn 90 degrees, the spraying of turning left from the right side along the plastic rubber substrate surface at the vertical direction spray gun; Spraying behind the spray gun Rotate 180 degree, sprays along the plastic rubber substrate surface at the vertical direction spray gun from left to right for the third time; The 4th spraying, after spray gun revolved and turn 90 degrees, spray gun sprayed along the plastic rubber substrate surface from left to right in the horizontal direction.Coating after the dilution is divided and is coated in the plastic rubber substrate surface four times, and the uniformity of avoiding spraying receives the influence of plastic rubber substrate surface configuration, and the 3 D workpiece that especially has the complex space structure for some adopts repeatedly spraying, guarantees that the plastic rubber substrate spraying effect is even.The spray angle of spray gun is 90 when spending, and coating vertically sprays to the plastic rubber substrate surface, thereby causes that coating is shallow to be gone out or the plastic rubber substrate surface of rebounding out, occurs bad painting effects such as pitted skin easily; Spray angle is 60～75 when spending, and guarantees that the coating that sprays can extend along the surface of plastic rubber substrate come, and has improved the levelability of coating, and painting effect is good, avoids producing pitted skin.
Wherein, in the said step F, baking temperature is 70～80 ℃, and stoving time is 60～120 minutes.Baking temperature is too high or stoving time is long, then wastes energy, and production efficiency is low; Even can cause the plastic rubber substrate surface to deform; Baking temperature cross low or stoving time short then insufficient to the plastic rubber substrate surface treatment, be unfavorable for the abundant curing of coating, influence spraying effect.The baking temperature of the plastic rubber substrate after the present invention will spray is controlled at 70～80 ℃, and stoving time was controlled at 60～120 minutes, guarantees the abundant dry solidification of coating, helps coating and forms stable dope layer on the plastic rubber substrate surface.
Wherein, among the said step C, the space cleanliness factor of the working environment of modulation coating is not less than 100,000 grades; Among the said step D, the space cleanliness factor of the working environment of surface spraying is not less than 100,000 grades.Air purity is 100,000 grades, represents in every cubic metre of (or every liter) air 1-5um grit number less than 2500.Guarantee the air cleaning of coating in modulated process, avoid the grit in the working environment to fall into coating, thereby the plastic rubber substrate after causing spraying produces the ill effect of particle; In the spraying process of surface, the space cleanliness factor is high, avoids the dust in the absorption of the coating after the atomizing working environment in the coating process, and the application yield is high.
Below in conjunction with embodiment the present invention is further described.
embodiment one.
Plastic rubber substrate to PC and ABS made from mixed materials cleans; Again plastic rubber substrate is sent into the UV-irradiation zone of UV-irradiation machine, with UV-irradiation plastic rubber substrate surface; Fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal then; Meanwhile modulate coating, the viscosity that makes coating is 8 seconds, and the temperature of coating is 18 ℃; The coating that modulates is packed in the spray gun, spray gun with coating with the spray angle of 60 degree, divide and spray for four times to the plastic rubber substrate surface, it is 4kg/cm that the spuing of spray gun pressed
2, the spraying swath of spray gun is pressed and is 3kg/cm
2, the front spraying rate of spray gun is 1200mm/s, and the side spraying rate of spray gun is 800mm/s, and the positive distance of spray gun and plastic rubber substrate is 15cm, and the distance of spray gun and plastic rubber substrate side is 12cm; Plastic rubber substrate after normal temperature will spray down left standstill 8 minutes; At baking temperature is 70 ℃, and stoving time is that the baking plastic rubber substrate makes paint solidification under 120 minutes conditions, thereby accomplishes the surperficial high light application of plastic rubber substrate.
embodiment two.
Plastic rubber substrate to PC and ABS made from mixed materials cleans; Again plastic rubber substrate is sent into the UV-irradiation zone of UV-irradiation machine, with UV-irradiation plastic rubber substrate surface; Fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal then; Meanwhile modulate coating, the viscosity that makes coating is 8.5 seconds, and the temperature of coating is 20 ℃; The coating that modulates is packed in the spray gun, spray gun with coating with the spray angle of 60 degree, divide and spray for four times to the plastic rubber substrate surface, it is 4.2kg/cm that the spuing of spray gun pressed
2, the spraying swath of spray gun is pressed and is 3.2kg/cm
2, the front spraying rate of spray gun is 1250mm/s, and the side spraying rate of spray gun is 850mm/s, and the positive distance of spray gun and plastic rubber substrate is 15cm, and the distance of spray gun and plastic rubber substrate side is 13cm; Plastic rubber substrate after normal temperature will spray down left standstill 8 minutes; At baking temperature is 72 ℃, and stoving time is that the baking plastic rubber substrate makes paint solidification under 110 minutes conditions, thereby accomplishes the surperficial high light application of plastic rubber substrate.
embodiment three.
Plastic rubber substrate to the ABS material cleans; Again plastic rubber substrate is sent into the UV-irradiation zone of UV-irradiation machine, with UV-irradiation plastic rubber substrate surface; Fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal then; Meanwhile modulate coating, the viscosity that makes coating is 9 seconds, and the temperature of coating is 21 ℃; The coating that modulates is packed in the spray gun, spray gun with coating with the spray angle of 70 degree, divide and spray for four times to the plastic rubber substrate surface, it is 4.4kg/cm that the spuing of spray gun pressed
2, the spraying swath of spray gun is pressed and is 3.4kg/cm
2, the front spraying rate of spray gun is 1300mm/s, and the side spraying rate of spray gun is 900mm/s, and the positive distance of spray gun and plastic rubber substrate is 16cm, and the distance of spray gun and plastic rubber substrate side is 13cm; Plastic rubber substrate after normal temperature will spray down left standstill 9 minutes; At baking temperature is 74 ℃, and stoving time is that the baking plastic rubber substrate makes paint solidification under 100 minutes conditions, thereby accomplishes the surperficial high light application of plastic rubber substrate.
embodiment four.
Plastic rubber substrate to the ABS material cleans; Again plastic rubber substrate is sent into the UV-irradiation zone of UV-irradiation machine, with UV-irradiation plastic rubber substrate surface; Fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal then; Meanwhile modulate coating, the viscosity that makes coating is 9.5 seconds, and the temperature of coating is 22 ℃; The coating that modulates is packed in the spray gun, spray gun with coating with the spray angle of 70 degree, divide and spray for four times to the plastic rubber substrate surface, it is 4.6kg/cm that the spuing of spray gun pressed
2, the spraying swath of spray gun is pressed and is 3.6kg/cm
2, the front spraying rate of spray gun is 1350mm/s, and the side spraying rate of spray gun is 900mm/s, and the positive distance of spray gun and plastic rubber substrate is 16cm, and the distance of spray gun and plastic rubber substrate side is 14cm; Plastic rubber substrate after normal temperature will spray down left standstill 9 minutes; At baking temperature is 76 ℃, and stoving time is that the baking plastic rubber substrate makes paint solidification under 90 minutes conditions, thereby accomplishes the surperficial high light application of plastic rubber substrate.
embodiment five.
Plastic rubber substrate to the PC material cleans; Again plastic rubber substrate is sent into the UV-irradiation zone of UV-irradiation machine, with UV-irradiation plastic rubber substrate surface; Fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal then; Meanwhile modulate coating, the viscosity that makes coating is 10 seconds, and the temperature of coating is 23 ℃; The coating that modulates is packed in the spray gun, spray gun with coating with the spray angle of 75 degree, divide and spray for four times to the plastic rubber substrate surface, it is 4.8kg/cm that the spuing of spray gun pressed
2, the spraying swath of spray gun is pressed and is 3.8kg/cm
2, the front spraying rate of spray gun is 1400mm/s, and the side spraying rate of spray gun is 950mm/s, and the positive distance of spray gun and plastic rubber substrate is 17cm, and the distance of spray gun and plastic rubber substrate side is 14cm; Plastic rubber substrate after normal temperature will spray down left standstill 10 minutes; At baking temperature is 78 ℃, and stoving time is that the baking plastic rubber substrate makes paint solidification under 80 minutes conditions, thereby accomplishes the surperficial high light application of plastic rubber substrate.
embodiment six.
Plastic rubber substrate to the PC material cleans; Again plastic rubber substrate is sent into the UV-irradiation zone of UV-irradiation machine, with UV-irradiation plastic rubber substrate surface; Fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal then; Meanwhile modulate coating, the viscosity that makes coating is 10.5 seconds, and the temperature of coating is 25 ℃; The coating that modulates is packed in the spray gun, spray gun with coating with the spray angle of 75 degree, divide and spray for four times to the plastic rubber substrate surface, it is 5kg/cm that the spuing of spray gun pressed
2, the spraying swath of spray gun is pressed and is 4kg/cm
2, the front spraying rate of spray gun is 1500mm/s, and the side spraying rate of spray gun is 1000mm/s, and the positive distance of spray gun and plastic rubber substrate is 17cm, and the distance of spray gun and plastic rubber substrate side is 15cm; Plastic rubber substrate after normal temperature will spray down left standstill 10 minutes; At baking temperature is 80 ℃, and stoving time is that the baking plastic rubber substrate makes paint solidification under 60 minutes conditions, thereby accomplishes the surperficial high light application of plastic rubber substrate.
The above only is a preferred embodiments of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, characteristic and principle change or modify, includes in patent claim of the present invention.
Claims (10)
1. the surperficial high light coating process of a plastic rubber substrate, it is characterized in that: it may further comprise the steps:
A, cleaning clean the plastic rubber substrate of moulding, remove the pollutant that adheres on plastic rubber substrate surface;
B, surface preparation, the UV-irradiation of plastic rubber substrate being sent into the UV-irradiation machine is regional, with UV-irradiation plastic rubber substrate surface, changes the micel structure on plastic rubber substrate surface;
C, modulation coating add curing agent and mixing diluents modulation, with the viscosity of dilution coating in the host of coating;
D, surface spraying are fixed on the plastic rubber substrate of accomplishing surface preparation in the spraying equipment, and the paint that modulates is applied to the plastic rubber substrate surface, accomplish the surface spraying of plastic rubber substrate;
E, leave standstill, the plastic rubber substrate after normal temperature will spray down left standstill 8～10 minutes, made coating evenly be coated in the plastic rubber substrate surface;
F, baking are put into roasting plant with the plastic rubber substrate after leaving standstill, and high-temperature baking makes paint solidification.
2. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 1 is characterized in that: between step B and step C, also include step B1, fixedly lie on the fixtures for painting and be transported to spraying equipment plastic rubber substrate is horizontal.
3. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 1 and 2 is characterized in that: among the said step C, coating is for by host: the mixed of curing agent: diluent=8:1:4 is processed, and the temperature of coating does
18～25℃。
4. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 3, it is characterized in that: among the said step C, the viscosity of coating is 8～11 seconds.
5. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 1; It is characterized in that: said step D is specially; The plastic rubber substrate of accomplishing surface preparation is fixed in the spraying equipment, the coating that modulates is packed in the spray gun, spray gun sprays coating to the plastic rubber substrate surface; Accomplish the surface spraying of plastic rubber substrate, the pressure that spues of spray gun is 4～5kg/cm
2, it is 3～4kg/cm that spraying swath is pressed
2
6. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 5, it is characterized in that: among the said step D, the spraying rate of spray gun is 800～1500mm/s, the distance on spray gun and plastic rubber substrate surface is 12～17cm.
7. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 6; It is characterized in that: the front spraying rate of said spray gun is 1200～1500mm/s; The side spraying rate of said spray gun is 800～1000mm/s; The positive distance of said spray gun and plastic rubber substrate is 15～17cm, and the distance of said spray gun and plastic rubber substrate side is 12～15cm.
8. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 5 is characterized in that: among the said step D, the spraying method of spray gun is four sprayings, and the spray angle of said spray gun is 60～75 degree.
9. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 1, it is characterized in that: in the said step F, baking temperature is 70～80 ℃, and stoving time is 60～120 minutes.
10. the surperficial high light coating process of a kind of plastic rubber substrate according to claim 1 is characterized in that: among the said step C, the space cleanliness factor of the working environment of modulation coating is not less than 100,000 grades; Among the said step D, the space cleanliness factor of the working environment of surface spraying is not less than 100,000 grades.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341435A (en) * | 2013-07-31 | 2013-10-09 | 北京东明兴业科技有限公司 | Coating method for plastic parts |
| CN104368511A (en) * | 2014-11-13 | 2015-02-25 | 东莞广泽汽车饰件有限公司 | Processing technology for plastic product surface pattern |
| CN104941885A (en) * | 2015-05-28 | 2015-09-30 | 北京天恒盛通科技发展有限公司 | Technology for carrying out electrostatic coating on base of non-conductor |
| CN106000831A (en) * | 2016-05-31 | 2016-10-12 | 上海子元汽车零部件有限公司 | Method for eliminating fat edges of high-brightness UV curing paint edges |
| CN106362920A (en) * | 2016-08-29 | 2017-02-01 | 晋江国盛新材料科技有限公司 | Surface modification technology for EVA shoe material |
| CN108554692A (en) * | 2018-05-31 | 2018-09-21 | 信利光电股份有限公司 | A kind of three-dimensional plate surface makes the method and three dimensional panel of coating |
| CN111329187A (en) * | 2020-04-10 | 2020-06-26 | 珠海富邦新材料科技有限公司 | Light-emitting and light-reflecting zipper and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341435A (en) * | 2013-07-31 | 2013-10-09 | 北京东明兴业科技有限公司 | Coating method for plastic parts |
| CN104368511A (en) * | 2014-11-13 | 2015-02-25 | 东莞广泽汽车饰件有限公司 | Processing technology for plastic product surface pattern |
| CN104941885A (en) * | 2015-05-28 | 2015-09-30 | 北京天恒盛通科技发展有限公司 | Technology for carrying out electrostatic coating on base of non-conductor |
| CN104941885B (en) * | 2015-05-28 | 2017-08-08 | 北京天恒盛通科技发展有限公司 | A kind of technique for carrying out electrostatic spraying in non-conductor substrate |
| CN106000831A (en) * | 2016-05-31 | 2016-10-12 | 上海子元汽车零部件有限公司 | Method for eliminating fat edges of high-brightness UV curing paint edges |
| CN106000831B (en) * | 2016-05-31 | 2019-02-12 | 上海子元汽车零部件有限公司 | Height light UV solidifies the removing method of paint edge fat edges |
| CN106362920A (en) * | 2016-08-29 | 2017-02-01 | 晋江国盛新材料科技有限公司 | Surface modification technology for EVA shoe material |
| CN108554692A (en) * | 2018-05-31 | 2018-09-21 | 信利光电股份有限公司 | A kind of three-dimensional plate surface makes the method and three dimensional panel of coating |
| CN111329187A (en) * | 2020-04-10 | 2020-06-26 | 珠海富邦新材料科技有限公司 | Light-emitting and light-reflecting zipper and preparation method thereof |
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