Text and graph roller printing process and apparatus for metal powder painting part

Abstract

The present invention is text and graph roller printing process and apparatus for metal powder painting part. The process includes the pre-treatment of the metal painting part, spraying the first layer of base color powder paint, curing at 155-175 deg.c for 5-8 min, spraying the second layer of powder paint, re-curing at 155-175 deg.c for 5-8 min, spraying the third facing powder paint to form thedestination color, printing with rubber roller with wood grains or other patterns to form the required pattern, and final curing at 190-210 deg.c for 10-15 min to obtain stereo grains with graduallychanged colors. The stereo grains formed in the technological process of the present invention has the features of strong touch and visual stereo feeling and long maintained period.

Description

Technical field: [0001] The invention relates to a roll printing process for imitating hand-feeling wood grain, patterns and other texture graphics on metal powder sprayed parts. Background technique: [0002] At present, the powder-coated aluminum profiles for construction, the large-scale aluminum and steel metal decorations for daily and industrial use, due to the complexity of the powder coating formula, cannot easily obtain the three-dimensional appearance of the image. Wait for texture effects! There is a transfer printing process that allows the metal powder sprayed parts to pass through the secondary thermal transfer technology after spraying, so that the metal parts can be sprayed with plane texture graphics on the outer surface. But what this method makes the metal part spraying part obtain is ink planar printing picture and text, and it lacks permeability in coating and fades easily, and retention is not long. Moreover, the graphics and text are planar graphics ...

AI Technical Summary

Problems solved by technology

[0002] At present, the powder-coated aluminum profiles for construction, the large-scale aluminum and steel metal decorations for daily and industrial use, due to the complexity of the powder coating formula, cannot easily obtain the three-dimensional appearance of the image. Wait for texture effects! There is a transfer printing process that allows the metal powder sprayed parts to pass through the secondary thermal transfer technology after spraying, so that the metal parts can be sprayed with plane texture graphics on the outer surface

However, this method makes the metal parts sprayed with ink flat printing graphics, which lacks permeability in the coating and is easy to fade, and the retention is not long.

Moreover, the graphics and texts are flat graphics and texts, and the color layering of the graphics surface is less, which limits the visual perception of sprayed parts as decorations.

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