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Spray drawing technology

An inkjet and process technology, applied in the field of inkjet technology, can solve the problems of poor surface adhesion between ordinary inkjet inks and UV varnish, and cannot meet the requirements of conventional testing, and achieve the effect of reducing product contamination, less pollution, and reducing turnaround time.

Inactive Publication Date: 2011-11-23
GUANGDONG JANUS SMART GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the adhesion between ordinary inkjet ink and UV varnish surface is poor, which cannot meet the requirements of routine testing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention is described in further detail below in conjunction with embodiment.

[0015] a) Spray UV varnish directly on the surface of the material or spray the primer first and then spray UV varnish, and use the ultraviolet rays emitted by the ultraviolet curing lamp to cure the varnish or first heat and bake the primer and then apply ultraviolet rays to the UV varnish Irradiation curing causes cross-linking reaction of UV varnish coating. The UV varnish used in this step is a UV varnish with good recoating performance. After being cured by ultraviolet radiation, the pencil hardness of the coating surface is 2H, the coating film has good chemical resistance, and the coating surface energy is high, which is suitable for secondary recoating. It has good adhesion to the top coating. The UV varnish curing conditions are that the power of the UV curing lamp is about 80-120w / cm2, the cumulative light amount is about 800mj / cm2, and the film thickness is 15-20um. ...

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PUM

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Abstract

The invention discloses a spray drawing technology. The technology comprises the following steps of a) spraying ultraviolet (UV) curable varnish on the surface of a material, or spraying primer and then spraying UV curable varnish, and b) spraying UV curable printing ink on the surface of the sprayed UV curable varnish through a spray drawing device to draw patterns. The technology has the advantages that the purposes of reducing produce cycle times and improving a production efficiency are realized; a UV curable varnish coating can produce a strong adhesive force; overall colors of patterns drawn by a spraying process are vivid; and wear-resistant and scratch-resistant properties are good, thus is a spray drawing technology which can satisfy routine testing requirements of a consumer electronic product shell.

Description

technical field [0001] The invention relates to an inkjet process, in particular to an inkjet process which can directly spray UV ink on the surface of a UV varnish coating, realize the use of a pattern as a surface layer, and achieve a surface decoration effect. Background technique [0002] Inkjet printing is a non-contact digital printing method for the surface of various soft and hard plates and sheets. This method is to edit the target pattern in the computer image processing software in advance, and control the inkjet printing The machine nozzle moves to spray ink onto the surface of the substrate to form a pattern. [0003] The inkjet method of inkjet printer can be divided into thermal foam type and piezoelectric type. Thermal foaming inkjet technology heats the nozzle to make the ink generate bubbles and spray it onto the printing medium. Ink is prone to chemical changes at high temperatures, and its properties are unstable, so the authenticity of the color of the...

Claims

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Application Information

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IPC IPC(8): B41M5/52B41J2/01B41J3/407
Inventor 谢守德毕英慧肖体乐王长明
Owner GUANGDONG JANUS SMART GRP CO LTD
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