CN100391622C - Application technique for painting ultraviolet cured coatings onto color TV set casing - Google Patents
Application technique for painting ultraviolet cured coatings onto color TV set casing Download PDFInfo
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- CN100391622C CN100391622C CNB2005101004797A CN200510100479A CN100391622C CN 100391622 C CN100391622 C CN 100391622C CN B2005101004797 A CNB2005101004797 A CN B2005101004797A CN 200510100479 A CN200510100479 A CN 200510100479A CN 100391622 C CN100391622 C CN 100391622C
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Abstract
The present invention discloses a painting technique of applying ultraviolet cured coatings to a color TV casing. The present invention is characterized in that ornamental thermoplastic acrylic acid bottom layer coatings with various colors are combined with ultraviolet solidifying surface layer coatings on the color TV casing, such as HIPS, etc. A construction technical process of the bottom layer coatings and the surface layer coatings is described and analyzed specifically, and the construction technical also meet a requirement of silk screen print so that the ultraviolet cured coatings can be used for painting the color TV casing exactly. A painted composite painting layer has the advantages of beautiful appearance, good decoration effect, good mechanical performance, and good physical and chemical performance. Simultaneously, the production efficiency of color TV products is improved obviously, and a requirement for increasing the market competitive power of a high-grade TV is satisfied.
Description
Technical field
The present invention relates to a kind of coating process that ultraviolet-curing paint is applied to color TV casing.
Background technology
The color TV casing coating is an important ring of colour TV manufacturing process, and it has the high pressure of preventing electric leakage, and therefore reinforced plastic material useful life longevity and the function that decorative effect is provided enjoy the concern and the attention of industry.Traditional painting color TV casing is based on thermoplastic acrylic paint, practical problems such as the ubiquity coating is thin, wearability, ornamental difference.The coating process that another kind is applied to color TV casing is as described in the patent publication No. CN 1459478A, on color TV casing, introduce two component polyurethane overprint coating (being commonly called as " gloss oil ") coating process, effectively strengthen the scratch resistance of color TV casing, wear-resistant, anti-conduction, high-temp resisting high-humidity resisting performance, and improved decorative effect.Yet polyurethane system is subjected to the restriction of plastics non-refractory can only low-temperature setting, thereby has influenced reaction speed, makes cure cycle long.Normally can sanding and polishing after must room temperature behind the 60 ℃ * 25min placing 24 hours, the transportation of can casing after 48 hours, thus cause production site and utilization rate of equipment and installations low, production efficiency is also low.Therefore, an urgent demand of colour TV industry replaces existing production model with new material or technology, satisfies the requirement that extensive efficient activity is produced.
Summary of the invention
The purpose of this invention is to provide a kind of coating process that ultraviolet-curing paint is applied to color TV casing, this technology makes ultraviolet-curing paint can correctly be used for painting color TV casing, it had both satisfied high-end TV to the ornamental requirement of outward appearance, had improved production efficiency and physical and chemical performance again.
Provided by the inventionly a kind of ultraviolet-curing paint is applied to the coating process of color TV casing, may further comprise the steps successively:
(1) plastic basis material colour TV is commonly used carries out the material processing, cleans, carries out drifting dust with washing shell water then;
(2) spraying and casing material have the coating that is applied in lower floor of good matching and adhesion, then the subbing that has sprayed is toasted, baking is carried out under the temperature more than 45 ℃, below 65 ℃, and the time is 10～20min, and appearance of film and performance are tested;
(3) by serigraphy the title of product type, specification, title or the company of colour TV is printed on bottom films, crossing the silk-screen stove then toasts, baking is carried out under the temperature more than 50 ℃, below 70 ℃, more than the time 1min, room temperature was placed more than 2 hours then, and the silk-screen outward appearance is tested;
(4) spray UV investment precoat, then to investment precoat levelling, preheating, cross photo solidification machine, check at last, pack.
Material of the present invention is meant the plastic basis material that television sets such as HIPS, ABS, ABS+PC are commonly used, and material is handled and is meant that injection moulding folder water wave or defective polish, and polishes after using 1000～1500 purpose sand paper with water-wet during polishing.
Usefulness of the present invention is washed shell water and is cleaned and be meant with white spirit or alcohol releasing agent on the casing and dust are wiped clean.
Drifting dust of the present invention be with pressure be 4～7 atmospheric air-flows treat the spraying casing carry out drifting dust.
Spray subbing of the present invention is meant that spraying and casing material have the coating that is applied in lower floor of good matching and adhesion, it comprises multiple color, as multiple primary coats such as silvery white, silver gray, ater, pure white, sudden strain of a muscle silver color, sudden strain of a muscle black, yellow, illusion-colour pearly-lustre look, pure pearly-lustre looks.Subbing of all kinds had not only become possibility for colour TV provides decorative effect but also the surface layer ultraviolet-curing paint is used on plastic basis materials such as HIPS.
Baking of the present invention is that the subbing that has sprayed is toasted, and to promote to film middle solvent evaporates, makes the curing of coating film forming, and about 10～20min of time is carried out in baking usually under the temperature more than 45 ℃, below 65 ℃.
Chromatography of the present invention is meant other color of on the ground floor subbing that has sprayed locally sprayed again one deck, to reach the effect of decoration.This decides according to designing requirement.Still need toast after the chromatography.
Check of the present invention is meant to be checked appearance of film and performance, checks outward appearance has zero defect, performance whether to meet the demands.
Of the present invention to cross the silk-screen stove be that the product that silk-screen is good toasts, and impels that solvent evaporates is with film-forming in the ink for screen printing, and baking is normally carried out under the temperature more than 50 ℃, below 70 ℃, more than about 1min of time.If the production scene lacks the silk-screen stove, also can use other oven to carry out; Perhaps at room temperature place and carry out the Lacquer finish operation more than two hours again.If use and UV coating have the curing agent than strong adhesive force, the silk-screen operation can be carried out after UV Lacquer finish operation.
Room temperature of the present invention is placed two purposes more than 2 hours: one makes the semi-finished product of having finished technologies such as subbing spraying, chromatography and silk-screen return to normality from the thermoelastic attitude; Its two, the solvent of bottom in filming discharged as far as possible fully.
Spray UV investment precoat of the present invention is meant on the semi-finished product of finishing subbing spraying, chromatography and silk-screen and sprays investment precoat, comprises transparent cover light coating and contains and bore transparent cover light coating.These investment precoats should with semi-finished product on various film and ink for screen printing good matching and adhesion are arranged.The mixture that the UV investment precoat is made up of height functionality monomer, height degree of functionality prepolymer, the coating that designs by the degree of functionality gradient, mechanical performances such as existing good surface appearance, hardness and wearability possess physical and chemical performances such as good toughness, alcohol resistance and high-low temperature resistant again.
Levelling of the present invention is meant that the investment precoat wet film that will be sprayed on the semi-finished product stopped 1～2 minute at normal temperatures, and under the effect of wet film self gravitation, auxiliary agent and solvent, it is smooth with trend to film.
Preheating of the present invention is meant at investment precoat and impelled the wet coating levelling better by infrared heating before ultraviolet lighting solidifies, and the partial solvent in the wet film is volatilized fully as far as possible, and preheat temperature is greater than 40 ℃ usually, and be more than the 1min preheating time.
Photo solidification machine of the present invention is that the ultraviolet fluorescent tube of 310～420nm is formed by several energy emission wavelengths.During work, the ultraviolet intensity of photo solidification machine emission should be evenly distributed, and the luminous intensity of each three-dimensional face should be at 400mj/cm
2More than.Cross photo solidification machine be meant with levelling completely the investment precoat wet film by ultra violet lamp, reaction, instantaneous solidification film forming.
Packing of the present invention is that the final products that will be up to the standards wrap up with soft pearl cotton and packaging bag, in order to avoid be bruised in carrying and cargo handling process.
Technology of the present invention is used in combination decorative thermoplastic acrylic subbing of all kinds and ultraviolet light polymerization investment precoat on color TV casings such as HIPS, and taken into account the requirement of silk-screen, make ultraviolet-curing paint can correctly be used for painting color TV casing, composite coating outward appearance after its application is good, decorative effect is good, and have favorable mechanical performance and physical and chemical performance, significantly improve the production efficiency of color TV sets simultaneously, satisfied the requirement that high-end TV improves the market competitiveness.
The specific embodiment
Embodiment 1
HIPS material folder water wave is made grinding process with 1000 sand paper, clean with the 6# solvent naphtha, the high pressure draught drifting dust, housing sprays silvery white thermoplastic acrylic subbing, 55 ℃ of baking 10min, appearance of film and performance are tested, inside casing spray silver gray thermoplastic acrylic subbing, 55 ℃ of baking 10min, appearance of film and performance are tested, silk-screen, cross 55 ℃ of bakings of silk-screen stove 2min, the silk-screen outward appearance is tested, room temperature is placed more than 2 hours, the high pressure draught drifting dust, spray UV transparent cover light coating, levelling, 50 ℃ of preheating 2min, (light intensity is 700mj/cm to cross the UV lamp
2), appearance of film and performance are tested, are packed.
Embodiment 2
HIPS material folder water wave is made grinding process with 1000 sand paper, clean with alcohol, the high pressure draught drifting dust, interior housing spray black thermoplastic acrylic subbing, 55 ℃ of baking 10min, appearance of film and performance are tested, silk-screen, cross 60 ℃ of bakings of silk-screen stove 2min, the silk-screen outward appearance is tested, room temperature is placed more than 4 hours, the high pressure draught drifting dust, spray UV contains blue diamond (containing the blue strong pearly-lustre that dodges) transparent cover light coating, levelling, 50 ℃ of preheating 3min, (light intensity is 800mj/cm to cross the UV lamp
2), appearance of film and performance are tested, are packed.
Implementation result
Claims (8)
1. one kind is applied to the coating process of color TV casing with ultraviolet-curing paint, may further comprise the steps successively:
(1) plastic basis material colour TV is commonly used carries out the material processing, cleans, carries out drifting dust with washing shell water then;
(2) spraying and casing material have the coating that is applied in lower floor of good matching and adhesion, then the subbing that has sprayed is toasted, baking is carried out under the temperature more than 45 ℃, below 65 ℃, and the time is 10～20min, and appearance of film and performance are tested;
(3) by serigraphy the title of product type, specification, title or the company of colour TV is printed on bottom films, crossing the silk-screen stove then toasts, baking is carried out under the temperature more than 50 ℃, below 70 ℃, more than the time 1min, room temperature was placed more than 2 hours then, and the silk-screen outward appearance is tested;
(4) spray UV investment precoat, then to investment precoat levelling, preheating, cross photo solidification machine, check at last, pack.
2. technology according to claim 1 is characterized in that the described material of step (1) is handled to be meant injection moulding folder water wave or defective are polished, and polishes after using 1000～1500 purpose sand paper with water-wet during polishing.
3. technology according to claim 1 is characterized in that the described usefulness of step (1) washes shell water and clean and be meant with white spirit or alcohol releasing agent on the casing and dust are wiped clean.
4. technology according to claim 1, it is characterized in that the described drifting dust of step (1) be meant with pressure be 4～7 atmospheric air-flows treat the spraying casing carry out drifting dust.
5. technology according to claim 1 is characterized in that the described spray of step (4) UV investment precoat is meant on the semi-finished product of finishing subbing spraying, chromatography and silk-screen to spray investment precoat, comprises transparent cover light coating and contain boring transparent cover light coating.
6. technology according to claim 1 is characterized in that the described levelling of step (4) is meant that the investment precoat wet film that will be sprayed on the semi-finished product stopped 1～2 minute at normal temperatures, and under the effect of wet film self gravitation, auxiliary agent and solvent, it is smooth with trend to film.
7. technology according to claim 1, it is characterized in that the described preheating of step (4) is meant in investment precoat mode with infrared ray heating before ultraviolet lighting impels the wet film levelling better, partial solvent in the wet film is volatilized fully as far as possible, preheating is carried out under greater than 40 ℃ temperature, more than the time 1min.
8. technology according to claim 1 is characterized in that the described photo solidification machine of step (4) is that the ultraviolet fluorescent tube of 310～420nm is formed by several energy emission wavelengths; Cross photo solidification machine be meant with levelling completely the investment precoat wet film by ultra violet lamp, reaction, instantaneous solidification film forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101004797A CN100391622C (en) | 2005-10-24 | 2005-10-24 | Application technique for painting ultraviolet cured coatings onto color TV set casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101004797A CN100391622C (en) | 2005-10-24 | 2005-10-24 | Application technique for painting ultraviolet cured coatings onto color TV set casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1751806A CN1751806A (en) | 2006-03-29 |
| CN100391622C true CN100391622C (en) | 2008-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101004797A Expired - Fee Related CN100391622C (en) | 2005-10-24 | 2005-10-24 | Application technique for painting ultraviolet cured coatings onto color TV set casing |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465239C (en) * | 2006-08-28 | 2009-03-04 | 广州擎天实业有限公司 | Bottom coating matched with ultraviolet cured coating for colour television receiver casing |
| CN100556557C (en) * | 2007-07-12 | 2009-11-04 | 惠州市格林塑胶电子有限公司 | Spray process in small production line |
| CN101444776A (en) * | 2008-12-26 | 2009-06-03 | 广州擎天实业有限公司 | Coating process of applying ultraviolet curing coating to indoor unit enclosure of air conditioner |
| CN103736638A (en) * | 2013-12-20 | 2014-04-23 | 河北汉光重工有限责任公司 | Metal surface paint spraying quality control process |
| CN105363657A (en) * | 2015-10-13 | 2016-03-02 | 太仓市和准电子科技有限公司 | Hardware surface spraying technique |
| CN109515017A (en) * | 2016-04-20 | 2019-03-26 | 江苏凯尔生物识别科技有限公司 | Method for printing screen for intelligent terminal |
| CN115957953A (en) * | 2022-12-30 | 2023-04-14 | 大亚车轮制造有限公司 | Lettering and color registering process for wheel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438260A (en) * | 2002-02-11 | 2003-08-27 | 西门子（中国）有限公司 | Painting method for plastic casing |
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2005
- 2005-10-24 CN CNB2005101004797A patent/CN100391622C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438260A (en) * | 2002-02-11 | 2003-08-27 | 西门子（中国）有限公司 | Painting method for plastic casing |
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| CN1751806A (en) | 2006-03-29 |
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Granted publication date: 20080604 |