Coating process applied to surfaces of plywood

A coating process, a technology for plywood, which is applied to devices for coating liquids on surfaces, special surfaces, pre-treated surfaces, etc., can solve the problems of unstable edge quality of stickers, complicated processes, release of toxic volatile substances, etc. Good decorative effect, simple coating process, green coating effect

Inactive Publication Date: 2012-06-27
CHINA NAT ELECTRIC APP RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the surface decoration of plywood mainly adopts stickers and spray paints. On the one hand, stickers and spray paints release toxic and volatile substances;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The low-temperature curing powder coating used in the plywood surface coating process consists of the following components in parts by weight:

[0019] 100 parts of epoxy resin with an epoxy equivalent of 700-750g / eq

[0020] Modified phenolic formaldehyde 20 parts

[0021] Titanium dioxide 30 parts

[0022] Quartz powder 10 parts

[0023] Barium sulfate 10 parts

[0024] Leveling agent 1.2 parts

[0025] Benzoin 0.6 parts

[0026] 0.8 parts of defoamer

[0027] Charge enhancer 0.6 parts

[0028] Pigment 5 parts

[0029] The above components are obtained by weighing, mixing, extruding, tableting, cooling, pulverizing and sieving according to the proportion.

Embodiment 2

[0031] The low-temperature curing powder coating used in the plywood surface coating process consists of the following components in parts by weight:

[0032] 150 parts of epoxy resin with an epoxy equivalent of 800-900g / eq

[0033] 20 parts of 2-methylimidazole

[0034] Titanium dioxide 30 parts

[0035] Mica powder 20 parts

[0036] Barium sulfate 20 parts

[0037] Leveling agent 1.5 parts

[0038] Benzoin 1.2 parts

[0039] 0.8 parts of defoamer

[0040] Charge enhancer 0.5 parts

[0041] Texturizer 2 parts

[0042] Pigment 5 parts

[0043] The above components are obtained by weighing, mixing, extruding, tableting, cooling, pulverizing and sieving according to the proportion.

Embodiment 3

[0045] The low-temperature curing powder coating used in the plywood surface coating process consists of the following components in parts by weight:

[0046] 160 parts of epoxy resin with an epoxy equivalent of 700-750g / eq

[0047] Phenyldimethylurea 10 parts

[0048] Titanium dioxide 50 parts

[0049] Quartz powder 20 parts

[0050] Barium carbonate 20 parts

[0051] Leveling agent 1.6 parts

[0052] Benzoin 1.6 parts

[0053] 2.8 parts of defoamer

[0054] Charge enhancer 1.5 parts

[0055] Sanding agent 2 parts

[0056] Pigment 5 parts

[0057] The above components are obtained by weighing, mixing, extruding, tableting, cooling, pulverizing and sieving according to the proportion.

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PUM

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Abstract

The invention discloses a coating process applied to the surfaces of plywood, which is that in a powder coating device where the layout and power of an infrared lamp tube meet the requirement that each surface of the plywood can be directly and effectively radiated, first the plywood is heated by infrared rays, heating temperature ranges from 90 DEG C to 140 DEG C, and heating time ranges from 1 minutes to 10 minutes; then low temperature curing powder paint is evenly sprayed on the surfaces of the plywood; and further the coating on the surfaces of the plywood is heated, fused and cured by the infrared rays, the heating temperature ranges from 110 DEG C to 140 DEG C, and the heating time ranges from (1) minutes to 10 minutes. The coating process applied to the surfaces of the plywood and the used powder paint have the advantages that 1 a coating procedure is simple, and forming can be finished at one step; (2) the coating is environment-friendly, no solvent and toxic volatility mater are produced and the like, thereby according with national industrial policies; (3) the powder paint can be recovered and recycled; and (4) surface coating with different lines, colors and gloss can be obtained through formula adjustment, and the decoration effect is good.

Description

technical field [0001] The invention relates to a coating process for the surface of plywood. Background technique [0002] Plywood is a wood-based panel made of veneers with different grain directions glued together. The veneer grains of adjacent layers usually form a 90° angle with each other, and the structure is mostly odd-numbered layers. Because plywood has the characteristics of small deformation, large format, convenient construction, not easy to warp, and high tensile strength of transverse grain, it is widely used in furniture, carriages, shipbuilding, military industry, packaging and other industrial sectors. At present, the surface decoration of plywood mainly adopts stickers and spray paints. On the one hand, stickers and spray paints release toxic and volatile substances; [0003] Powder coating is a recognized 4E type coating product with high production efficiency, excellent film performance, eco-environmental protection and economy. With people's gradual a...

Claims

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Application Information

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IPC IPC(8): B05D5/06B05D3/00B05D3/06B05D7/06
Inventor 周和荣高庆福胡百九甘灯河张捷
Owner CHINA NAT ELECTRIC APP RES INST
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