CN1962085A - Method for spray coating of crackle lacquer - Google Patents
Method for spray coating of crackle lacquer Download PDFInfo
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- CN1962085A CN1962085A CN 200510101306 CN200510101306A CN1962085A CN 1962085 A CN1962085 A CN 1962085A CN 200510101306 CN200510101306 CN 200510101306 CN 200510101306 A CN200510101306 A CN 200510101306A CN 1962085 A CN1962085 A CN 1962085A
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- polypropylene
- crackle
- paint
- polyurethane
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Abstract
The invention relates to a method for plating crack paint, which comprises a, plating the polypropylene bottom paint on the surface of product made from modified polypropylene material, the bottom paint can be grey, black, or grey-white bottom paint; b, drying said bottom paint and plating the acroleic acid bottom paint that diluted by dimethylbenzene solvent, drying; c, plating the polypropylene crack paint diluted by the crack solution on the acroleic acid bottom paint, drying; d, plating the polyurethane paint diluted by polyurethane solvent and added with solidifier on the polypropylene crack bottom, and drying. The invention has low cost.
Description
Technical field
The present invention relates to the surperficial spraying process for treating of workpiece, particularly relate to a kind ofly, make it to present the method for dermatoglyph effect at the surface of the work spray coating of crackle lacquer.
Background technology
Spraying paint at surface of the work is a kind of common surface treatment method, wherein, mainly is for preventing that workpiece from producing corrosion at the metal works surface lacquer, and plays decoration function.And, spray paint as plastics or leather based article surface that to handle then be to be to produce decorative effect at on-metallic article, and mainly be to produce the dermatoglyph effect, this surface treatment is more common on the automotive upholstery.Dual mode is generally passed through in the generation of automotive upholstery surface dermatoglyph at present: a kind of is to adopt corium to decorate, and another kind is the imitation leather line, and the back is a kind of to be to touch tool and come processing by opening.The major defect of above-mentioned dual mode is that production cost is all than higher.
Summary of the invention
The present invention is intended to address the above problem, and provide a kind of on polypropylene articles the new method of spray coating of crackle lacquer, both have dermatoglyph decorative effect preferably to reach, have the purpose of lower production cost again.
For achieving the above object, the invention provides a kind of method of spray coating of crackle lacquer, this method comprises the steps:
The surface spraying of a, the product made at modified polypropylene material is by the polypropylene priming paint of polypropylene solvent dilution;
B, will be sprayed polypropylene priming paint oven dry back spraying by the acrylic primer of xylene solvent dilution, after the baking then cold put to the surface from doing;
C, the polypropylene crackle lacquer that spraying is diluted by the solvent benzol kind solvent on acrylic primer, baking then;
D, paint spraying by the polyurethane solvent dilution, and add the polyurethane colored paint of polyurethane curing agent, baking then at polypropylene crackle.
Among the step a, polypropylene priming paint and polypropylene solvent are prepared in 1: 0.8～0.9 weight portion ratio, and dilution time was 12～13 seconds.
Polypropylene priming paint is during by the polypropylene solvent dilution, will according to the temperature, humidity in spray room select slow curing, in do, the fast different solvent of doing, the high more solvent of selecting for use of temperature is the slow curing solvent, and temperature is low more selects fast dried solvent for use, the constant temperature and humidity condition is next select for use in dried solvent.
Ratio as the polypropylene solvent is lower than 0.8, and then the viscosity of priming paint may play tangerine peel dense and easily, and product surface has depression, corrugates.As the ratio of polypropylene solvent greater than 0.9, then spraying can sagging, do not spray product surface, do not have covering power.
Among the step b, the baking temperature of polypropylene priming paint is 65～70 ℃, and stoving time is 20～30 minutes; Acrylic primer and xylene solvent were prepared in 1: 1 weight portion ratio, and dilution time was 14～16 seconds, 65～70 ℃ of temperature bakings 15～20 minutes.
Need baking after the priming paint spraying, not so do not reach case hardness and require and examination criteria, be less than 20 minutes if baking temperature is lower than 65 ℃ and time, then baking does not reach the hardness that makes drying varniss and requirement, and finish paint is produced sting end phenomenon.If temperature is higher than 70 ℃, the time then can produce the baking distortion greater than 30 minutes, caused finished product to scrap.
The retarder thinner time is then painted too rare meeting sagging as less than 14 seconds.Dilution time then paints too dense meeting and produces tangerine peel as greater than 16 seconds, influences presentation quality.
Among the step c, the polypropylene crackle lacquer was prepared in 1: 0.8～0.9 weight portion ratio with solvent benzol class crackle solvent, and dilution time was 14～16 seconds, 65～70 ℃ of temperature bakings 10～20 minutes.
The ratio of crackle solvent is as being lower than 08, and the crackle effect can be very little, and it is very high to cause spraying rear surface solubility, and too fast drying makes outward appearance not have brightness, and lines is unintelligible.
Greater than 0.9, then crackle is very coarse as the ratio of crackle solvent, and it is very low to cause spraying rear surface solubility, makes product appearance too moistening, very dim gloss confusion.
In the steps d, polyurethane colored paint and the weight portion ratio preparation of the polyurethane solvent that adds curing agent in 1: 1, dilution time was 13～15 seconds, polyurethane solvent and curing agent were prepared in 7: 1 weight portion ratio, 65～70 ℃ of temperature bakings 50～60 minutes.
As less than 1, then can make product surface hardness low as the ratio of polyurethane solvent, not do, not wear-resisting.
The ratio of polyurethane solvent then can make the product surface flavescence as greater than 1, forms serious aberration.
Contribution of the present invention is that this method can make the adhesive force of spray coating of crackle lacquer strengthen, and the dermatoglyph effect that spraying produces is identical with mould plating effect, but has reduced production cost, has reduced the expensive expense that mould plating die sinking tool is brought.This method can require to produce different thickness lines according to reality, and can reduce the die sinking time, enhance productivity, and simple to operate, the practicality height.The crackle film of making is even, adhesive force good, and is specious, and feel is identical with dermatoglyph.
Description of drawings
Fig. 1 is the coarse groove crackle paint schematic diagram of being made by the inventive method.
Fig. 2 is the microgroove crackle paint schematic diagram of being made by the inventive method.
Fig. 3 is the crackle paint schematic diagram of being made by conventional method.
The specific embodiment
The following example is to further explanation of the present invention and explanation, and the present invention is not constituted any limitation.
The method of spray coating of crackle lacquer of the present invention comprises the steps:
A, with PP grey polypropylene priming paint with PP (polypropylene) solvent by 1: 0.85 ratio (weight portion) dilution 12 minutes, control the paint viscosity by the control time, be sprayed on the surface of the product of modified polypropylene material making then.
B, with the polypropylene priming paint that sprayed with 68 ℃ temperature oven dry 20 minutes, make solvent evaporates, 206 type acrylic acid black backing varnishes were diluted for 15 seconds with X3 (xylene solvent) in 1: 1 ratio (weight portion), on the polypropylene priming paint after 70 ℃ of temperature oven dry were sprayed on oven dry in 15 minutes then, cold is put to the surface from doing then.
This step is used for enhancing and is coated with the interface, seam between the bottom surface.
C, with polypropylene crackle lacquer solvent benzene kind solvent in 15 seconds of 1: 0.85 ratio (weight portion) dilution, be sprayed on the acrylic primer, with 68 ℃ temperature oven dry 15 minutes, make solvent evaporates then.
This step is used for the thickness by desired dermatoglyph effect allotment crackle.
D, PU (polyurethane solvent) is mixed in 7: 1 ratio (weight portion) with polyurethane curing agent, again with ratio (weight portion) mixed diluting 14 seconds of PU (polyurethane) colored paint in 1: 1, be sprayed on polypropylene crackle and paint, dried 60 minutes with 68 ℃ temperature then, make solvent evaporates.
The depth that this step can mix colours by different color requirements.
According to said method of the present invention, produce and the identical dermatoglyph of mould plating effect on the product that can in automobile decoration piece, make by modified polypropylene material.
Fig. 1 and Fig. 2 are two kinds of large and small two kinds of lines of making by above-mentioned technology, and spray gun is painted flow-control at 200-250ml, and air pressure is 0.5-0.6mpa, then form coarse groove as shown in Figure 1.Spray gun is painted flow-control at 100-200ml, and air pressure is 0.2-0.35mpa, then forms microgroove as shown in Figure 2.Crackle among Fig. 1, Fig. 2, lines all are to split in the coating outside, and lines is continuous, so there is concave-convex sense on the surface, demonstrate the effect as the dermatoglyph.Fig. 3 then is the crackle of making by general spraying method, and the lines of its crackle has split (ground is white) on the ground, and lines is interrupted, and adhesive force is relatively poor.
Claims (5)
1, a kind of method of spray coating of crackle lacquer is characterized in that, it comprises the steps:
The surface spraying of a, the product made at modified polypropylene material is by the polypropylene priming paint of polypropylene solvent dilution;
B, will be sprayed polypropylene priming paint oven dry back spraying by the acrylic primer of xylene solvent dilution, after the baking then cold put to the surface from doing;
C, the polypropylene crackle lacquer that spraying is diluted by the solvent benzol kind solvent on acrylic primer, baking then;
D, paint spraying by the polyurethane solvent dilution, and add the polyurethane colored paint of polyurethane curing agent, baking then at polypropylene crackle.
2, the method for spray coating of crackle lacquer as claimed in claim 1 is characterized in that, in the step (a), polypropylene priming paint and polypropylene solvent are prepared in 1: 0.8～0.9 weight portion ratio, and dilution time was 12～13 seconds.
3, the method for spray coating of crackle lacquer as claimed in claim 1 is characterized in that, in the step (b), the baking temperature of polypropylene priming paint is 65～70 ℃, and stoving time is 20～30 minutes; Acrylic primer and xylene solvent were prepared in 1: 1 weight portion ratio, and dilution time was 14～16 seconds, 65～70 ℃ of temperature bakings 15～20 minutes.
4, the method for spray coating of crackle lacquer as claimed in claim 1, it is characterized in that in the step (c), the polypropylene crackle lacquer is prepared in 1: 0.8～0.9 weight portion ratio with solvent benzol class crackle solvent, dilution time was 14～16 seconds, 65～70 ℃ of temperature bakings 10～20 minutes.
5, the method for spray coating of crackle lacquer as claimed in claim 1, it is characterized in that, in the step (d), polyurethane colored paint and the weight portion ratio preparation of the polyurethane solvent that adds curing agent in 1: 1, dilution time was 13～15 seconds, polyurethane solvent and curing agent were prepared in 7: 1 weight portion ratio, 65～70 ℃ of temperature bakings 50～60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510101306A CN100581658C (en) | 2005-11-08 | 2005-11-08 | Method for spray coating of crackle lacquer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510101306A CN100581658C (en) | 2005-11-08 | 2005-11-08 | Method for spray coating of crackle lacquer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1962085A true CN1962085A (en) | 2007-05-16 |
| CN100581658C CN100581658C (en) | 2010-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510101306A Expired - Fee Related CN100581658C (en) | 2005-11-08 | 2005-11-08 | Method for spray coating of crackle lacquer |
Country Status (1)
| Country | Link |
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| CN (1) | CN100581658C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913280A (en) * | 2010-07-23 | 2010-12-15 | 深圳市天健涂料科技开发有限公司 | Crackle paint and preparation method and construction process thereof |
| CN102211081A (en) * | 2010-04-09 | 2011-10-12 | 北京华旗资讯数码科技有限公司 | Method for manufacturing grains and patterns on product and digital camera with grains and patterns |
| CN102211082A (en) * | 2010-04-09 | 2011-10-12 | 北京华旗资讯数码科技有限公司 | Method for manufacturing crackle ornamentations on articles and digital camera with ornamentations |
| CN102657411A (en) * | 2012-02-15 | 2012-09-12 | 广东溢达纺织有限公司 | Natural crack button and preparation method thereof |
| CN113198711A (en) * | 2021-04-27 | 2021-08-03 | 福州鑫铄光精密机械有限公司 | Baking varnish leather grain surface spraying method for industrial camera shell |
-
2005
- 2005-11-08 CN CN200510101306A patent/CN100581658C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211081A (en) * | 2010-04-09 | 2011-10-12 | 北京华旗资讯数码科技有限公司 | Method for manufacturing grains and patterns on product and digital camera with grains and patterns |
| CN102211082A (en) * | 2010-04-09 | 2011-10-12 | 北京华旗资讯数码科技有限公司 | Method for manufacturing crackle ornamentations on articles and digital camera with ornamentations |
| WO2011124081A1 (en) * | 2010-04-09 | 2011-10-13 | 爱国者数码科技有限公司 | Process for making decorative crack pattern on object and digital camera with decorative pattern |
| WO2011124080A1 (en) * | 2010-04-09 | 2011-10-13 | 爱国者数码科技有限公司 | Method for making grain on product and digital camera with grain |
| CN101913280A (en) * | 2010-07-23 | 2010-12-15 | 深圳市天健涂料科技开发有限公司 | Crackle paint and preparation method and construction process thereof |
| CN101913280B (en) * | 2010-07-23 | 2012-10-10 | 周荣华 | Crackle paint and preparation method and construction process thereof |
| CN102657411A (en) * | 2012-02-15 | 2012-09-12 | 广东溢达纺织有限公司 | Natural crack button and preparation method thereof |
| CN102657411B (en) * | 2012-02-15 | 2014-06-18 | 广东溢达纺织有限公司 | Natural crack button and preparation method thereof |
| CN113198711A (en) * | 2021-04-27 | 2021-08-03 | 福州鑫铄光精密机械有限公司 | Baking varnish leather grain surface spraying method for industrial camera shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100581658C (en) | 2010-01-20 |
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Granted publication date: 20100120 Termination date: 20201108 |