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Methods for controlling coating gloss

A gloss and coating technology, applied in the direction of coating, the process for producing decorative surface effects, and patterns characterized by light projection effects, can solve the problems of time-consuming and cost, achieve low gloss and improve flow performance , good transparency effect

Inactive Publication Date: 2010-06-16
VALSPAR SOURCING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is time consuming and costly and requires maintaining an inventory of coating solutions with different pigment contents and different gloss levels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0039] A 100% solids sprayable UV curable coating composition was formulated according to Table 1. Coatings were made by adding the components in the order indicated in Table 1 under agitation (500 RPM to 1000 RPM). The final coating was filtered through a 10 μm screen and stored in metal tanks for spray application. The formulation was applied to flat oak planks suitable for flooring with a general purpose air gun available from Binks Inc. The final coating is about 2 mils (0.05 mm) thick. The coated panels were conveyed into a slow UV curing unit and the conditions in Table 2 below were applied to form a B-stage coating.

[0040] Table 1

[0041] Mass percentage of sprayable ultraviolet coating composition

[0042] SR 306

[0043] SR 306

[0044] SR 306 is tripropylene glycol diacrylate (TPGDA), available from Sartomer Corp., Exton, PA.

[0045] SR351 is trimethylolpropane triacrylate (TMPTA), commercially available from Sartomer Corp.

[0046] SR25...

no. 2 example

[0062] A low viscosity 100% solids sprayable UV curable coating composition was formulated according to Table 4. Coatings were made by adding the components in the order indicated in Table 4 under agitation (500 RPM to 1000 RPM). The final coating was filtered through a 10 μm screen and stored in metal tanks for spray application. The formulation was applied to flat oak planks suitable for flooring with a general purpose air gun available from Binks Inc. The final coating is about 1 mil (0.025 mm) thick. The coated panels were conveyed into a slow UV curing unit and the conditions in Table 2 above were applied to form a B-stage coating.

[0063] Table 4

[0064] Mass percentage of sprayable ultraviolet coating composition

[0065] SR 306

[0066] SR 306

[0067] The B-stage coating is then embossed with a non-adhesive rubber roller with an alligator-like textured decoration to form a patterned coating that is immediately conveyed into a fast UV curing u...

no. 3 example

[0073] The 100% solids sprayable UV-curable coating compositions in Table 1 were B-staged under the conditions in Table 2. A high-medium-low-gloss textured polymer film described in Table 6 was then applied to the exposed surface of the B-stage coating before being conveyed into a UV curing oven. The texture from the film was physically transferred to the B-staged coating which was then fully cured according to the conditions in Table 3 above.

[0074] Table 6 also shows the effect of the film applied to the surface texture of the coating. All measurements were taken at 60 degrees with a white light interferometer (Veeco NT2000) and a portable micro-gloss meter from Byk Gardner. These data demonstrate that applying a thin film with desired texture or gloss can be used to control the surface roughness and gloss of a B-staged coating, and that changes in roughness and gloss are retained in the fully cured coating.

[0075] Table 6

[0076] Gloss and Roughness

[0077] ...

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PUM

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Abstract

A method including applying a coating composition on a substrate to form a coating, wherein the coating has a first surface roughness; transferring a pattern to the coating to form a patterned coating, wherein the patterned coating has a second surface roughness different from the first surface roughness; and curing the patterned coating to form a cured coating with a desired level of gloss.

Description

technical field [0001] The present invention relates to a method for imparting a specified gloss level to a coating on an article. Background technique [0002] The final gloss of a coating such as a 100% solids UV curable topcoat depends on a number of parameters that are difficult to control. For example, properties of the coating solution itself, such as resin binder used in the formulation, formulation viscosity, and matting pigment content, can have an impact on the final gloss level of the topcoat. In addition, curing conditions, such as curing speed, temperature, and oxygen inhibition, have an impact on the gloss of the final coated product. In order to achieve an extremely low gloss finish, the coating solution typically has an extremely high content of matting pigments to roughen the surface of the cured coating. However, this higher pigment content also reduces the flow properties of the coating solution. [0003] Furthermore, conditions in a production facility...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D3/06B05D5/02B44F1/02B44F9/12
CPCB05D1/40B44C1/24B05D5/00B05D1/42B44F1/02B05D3/067
Inventor 吴邵兵法兰克·陈乔治·藤
Owner VALSPAR SOURCING INC
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