Transfer printing type ultraviolet light curing ink composition, preparation method thereof and mobile phone casing using ink composition

An ink composition, ultraviolet light technology, applied in the direction of ink, application, household appliances, etc., can solve problems such as poor adhesion, shrinkage of product edges, etc.

Inactive Publication Date: 2011-03-30
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that on the interface with low surface energy, the adhesion is poor, and some products have edge shrinkage after curing.

Method used

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  • Transfer printing type ultraviolet light curing ink composition, preparation method thereof and mobile phone casing using ink composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The formula of the UV-curable ink composition that can be printed in the present invention is:

[0037] Four-functionality polyester acrylic resin 38.5wt%

[0038] Amino-modified acrylic resin 15wt%

[0039] Nine-functionality aliphatic urethane acrylate 10wt%

[0040] 8wt% thermoplastic hydroxyl acrylic resin with hydroxyl value content of 45mgKOH / g

[0041] Thinner UV curing monomer 10wt%

[0042] Photoinitiator 4wt%

[0043] Pigment is carbon black 10wt%

[0044] Defoamer 0.5wt%

[0045] Leveling agent 1.5wt%

[0046] Thixotropic agent is fumed silica 2.0wt%

[0047] Dispersant 0.5wt%

[0048] According to the formula, the components were fully mixed evenly, and ground with a three-roll mill until the fineness was below 10 μm to obtain the pad-printable UV-curable ink composition A1 of the present invention.

[0049] Use a pad printing machine to print on the surface of the varnish layer with a surface energy of 28Dyne / cm, and convey it by a conveyor belt, a...

Embodiment 2

[0051] The difference from Example 1 is that it also contains a second UV curable monomer, and the second UV curable monomer is a trifunctional monomer. Wherein, the content of the four-functional polyester acrylic resin is 30.5 wt%, and the content of the tri-functional monomer is 8 wt%. The pad-printable UV-curable ink composition B1 of the present invention was obtained.

[0052] 500 ink layer B11 samples were obtained by pad printing and curing by a pad printer.

Embodiment 3

[0054] The difference from Example 1 is that it does not contain additives, wherein the content of additives leveling agent, defoamer, thixotropic agent and dispersant are all 0, and the content of chlorinated acrylic resin is 19.5wt%. Because do not contain auxiliary agent so the time of mixing is longer than embodiment 1. The pad-printable UV-curable ink composition C1 of the present invention was obtained.

[0055] 500 ink layer C11 samples were obtained by pad printing and curing by a pad printer.

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Abstract

The invention provides a transfer printing type ultraviolet light curing ink composition and a preparation method thereof. The ink composition comprises main body resin, a thinner, pigment and photoinitiators, and addition agents are included or not included, wherein the main body resin is polyester acrylate resin, modified acrylic resin, high-functionality-degree aliphatic urethane acrylate and hydroxy acrylic resin, the hydroxy acrylic resin is thermoplastic hydroxy acrylic resin, and the hydroxyl value content is between 45 and 70 mg KOH/g. The invention also provides a mobile phone casing using the ink composition, wherein the mobile phone casing sequentially comprises a substrate, a primer layer, a gloss oil layer and an ink pattern layer from bottom to top, and the ink pattern layer is obtained from the ink composition through transfer printing. When the transfer printing type ultraviolet light curing ink composition is adopted, the adhesive force between the ink layer and a contact layer can be enhanced, and in addition, when the surface of the contact layer is lower, the cured ink layer can effectively avoid the phenomenon of edge contraction.

Description

technical field [0001] The invention relates to a pad-printable ultraviolet light-curable ink composition, a preparation method thereof, and a mobile phone housing using the ink composition. Background technique [0002] Pad-printable ultraviolet (UV) curable inks are a research hotspot in recent years. UV pad printing inks have high gloss, high wear resistance and excellent environmental resistance, which dwarfs solvent-based inks. [0003] Pad printing inks usually require high hiding power, which requires high color density and fineness of pigments. However, due to the congenital defects of the transfer effect of the pad printing process, the high solid content will affect the performance of the hiding power. The reason why ink manufacturing is difficult. It is actually more difficult to obtain the unity of high hiding power and high curing speed for UV pad printing ink. High curing speed means high transparency and relatively thin ink layer, but this is not allowed by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10H04M1/02C09D11/101C09D11/102C09D11/104C09D11/107
Inventor 张璐璐
Owner BYD CO LTD
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