Multi-color coloring laser marking-use chromatic color colorant, multi-color coloring laser marking-use composition and molding containing it, multi-color marking-carrying molding and laser marking me

A laser marking and colored technology, applied in the direction of copying/marking method, temperature recording method, organic dyes, etc., can solve the problems of visibility and design pattern restrictions, and achieve long-term high maintenance, not easy to deform, easy to identify Effect

Inactive Publication Date: 2007-02-07
TECHNO POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, regardless of the method, since the marking part is monochromatic, the visibility and the design pattern are quite limited

Method used

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  • Multi-color coloring laser marking-use chromatic color colorant, multi-color coloring laser marking-use composition and molding containing it, multi-color marking-carrying molding and laser marking me
  • Multi-color coloring laser marking-use chromatic color colorant, multi-color coloring laser marking-use composition and molding containing it, multi-color marking-carrying molding and laser marking me
  • Multi-color coloring laser marking-use chromatic color colorant, multi-color coloring laser marking-use composition and molding containing it, multi-color marking-carrying molding and laser marking me

Examples

Experimental program
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Effect test

Embodiment

[0308] Hereinafter, the present invention will be specifically explained with examples. In addition, the present invention is not limited by these examples. In addition, "%" and "parts" in the examples are quality standards unless otherwise specified.

[0309] [I] There are colored colorants

[0310] [I-I] Types of colored colorants and exothermic peak temperature

[0311] Regarding the colorants shown below, the exothermic peak temperature was measured by differential thermal analysis. The measuring device is "TG-DTA320 type (horizontal furnace)" manufactured by Seiko Electronics. An aluminum dish-shaped container with a diameter of 5 mm × a height of 2.5 mm was uniformly and densely filled with a sample of 3 mg. The temperature increase rate was set at 10° C. / min. The measurement was carried out at a flow rate of 200 ml / min in air. In addition, the temperature correction in the measuring device is performed using indium and tin. In addition, weight calibration is performed at ro...

Embodiment A-1

[0343] Using a mixer, 0.2 parts of the above-mentioned colored colorant (1), 0.1 parts of black substance (trade name "Mitsubishi Carbon #45", manufactured by Mitsubishi Chemical Corporation), and 100 parts of rubber reinforced copolymer obtained by the following method After mixing the resin for 5 minutes, use a 50mm extruder to perform melt kneading and extrusion at a drum set temperature of 180-220°C to obtain pellets. The obtained pellets were sufficiently dried, and a sample piece (80 mm in length, 55 mm in width, and 2.5 mm in thickness) for evaluation was obtained using an injection molding machine (model name "EC-60", manufactured by Toshiba Machine Co., Ltd.).

[0344]For laser marking, the Rofin Power Line "E / SHG" manufactured by Rofin Baasel and the laser marker "RSM30D" manufactured by the same company are used. The wavelength of the laser is set to 532nm and 1064nm, respectively. Each laser is irradiated at different positions on the surface of the specimen. . When t...

Embodiment A-2

[0350] Except that the chromatic colorant (2) was used instead of the chromatic colorant (1), and the blending amount was set to 0.1 parts, a sample piece was produced and evaluated in the same manner as in the above-mentioned Example A-1. The results are also shown in Table 2.

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Abstract

The objective of the present invention is to provide a chromatic coloring agent for multicolor laser marking, capable of forming clear markings having two or more different color tones when two or more laser beams having different energy levels are irradiated onto different places of a molded article, a composition for multicolor laser marking, for example, capable of forming a chromatic marking derived from the chromatic coloring agent and a white marking on the surface of a molded article whose base color is black or dark-color based color, a laser marking method, a multicolor-marked molded article and the like. The present chromatic coloring agent has an exothermic peak in the range of 360 DEG C or higher and 590 DEG C or lower, as measured by differential thermal analysis. The present laser marking composition comprises a chromatic coloring agent, a black substance (carbon black or the like) which is itself depleted or discolored by receiving a laser beam, and a polymer, and the contents of the chromatic coloring agent and the black substance are respectively 0.001 to 3 parts by mass and 0.01 to 2 parts by mass with respect to 100 parts by mass of the polymer.

Description

Technical field [0001] The present invention relates to a chromatic colorant for multicolor laser marking, a composition for multicolor laser marking, a molded article containing the composition, a molded article with multicolor marking, and a laser marking method. In more detail, it relates to when irradiating two or more types of lasers with different energies on a molded article containing a coloring agent, it is possible to clearly form a mark containing a color derived from the coloring agent and more than two different tones. The multi-color color-developing laser marking uses a color colorant. In addition, it relates to a composition for multi-color color-developing laser marking that is marked into two or more different tones by irradiating two or more lasers with different energies and A molded product containing the composition, a molded product with multicolor marking, and a laser marking method. Background technique [0002] The laser marking method is attracting atte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08J7/00C08K3/00C08K5/00B41M5/26C09B67/00C09B69/00
CPCC08K5/0041B41M5/267B41M5/34C08L101/00C09B67/00C09B67/0019C09B69/00
Inventor 川上和美栗本英幸清水朗小坂井俊行石田美织
Owner TECHNO POLYMER CO LTD
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