Decorative method for forming body

A technology for moldings and decorative layers, which can be used in decorative arts, devices for coating liquid on surfaces, special decorative structures, etc., and can solve problems such as deterioration of the working environment, impact, and increased production costs

Inactive Publication Date: 2005-07-27
MATSUSHITA ELECTRIC WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of drawing with soluble paint, there is a problem in that the working environment is deteriorated due to the solvent used therein, and the natural environment is also adversely affected.
[0006] In addition, in the case of using a coating composed of a thermosetting resin or the like, there is a problem in that it takes a long time to solidify the coating when the molded body is placed in a high-temperature atmosphere, which makes it difficult to perform flow-line operation.
[0007] In addition, in methods such as film sticking and transfer film, there is a problem in that the film layer needs to be a part separate from the molded body, so that the production cost increases
Furthermore, in the case of transferring films, there is a problem of needing to dispose of the waste material of the film layer, which causes adverse environmental impact

Method used

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  • Decorative method for forming body
  • Decorative method for forming body
  • Decorative method for forming body

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0083] A thermoplastic IMC reagent (pragrass #8000 green) manufactured by Dainippon Paint Co., Ltd. was used as the resin composition. This reagent is a mixture of 100 parts (mass) base reagent and 2 parts (mass) curing agent. The basic reagent consists of 68% (mass) of urethane acrylate (containing cross-linked antioxidants and polymerized antioxidants), 30% (mass) of inorganic components (cobalt oxide) and 2% (mass) of additives (such as Pigment dispersant, internal model release agent, etc.). Described solidifying agent is by the organic peroxide of 50% (mass) (peroxydicarbonate two (4-tert-butyl cyclohexyl ester); the Perkadox 16 that chemical medicine AKZO Co., Ltd. produces) and the plasticizing solvent of 50% (mass) (dibutyl phthalate) composition. The viscosity of this mixture is 5 Pa·s.

[0084] On the other hand, a flat plate forming body 1, which measures 90 mm x 40 mm x 3.0 mm, is molded from ABS resin (manufactured by DAICEL Chemical Industry Co., Ltd.; Cevian ...

example 2

[0091] 5 parts (quality) of titanium dioxide pigment (Netherlands TOPFINE company system, Toifine R41), 0.05 part (quality) of magenta pigment (Netherlands CIBA-GEIGY company system, Irgalith Rubine4BP), 0.05 part (quality) of cyan pigment (Netherlands CIBA- GEIGY, Irgalith blueLGLD) was mixed with 0.05 parts (by mass) of a yellow pigment (Cromophal Yellow 6G, CIBA-GEIGY, Netherlands) to prepare a coloring material.

[0092] Then, by mixing 100 parts (mass) of the base reagent with 2 parts (mass) of the curing agent, a resin composition having a viscosity of 5 Pa·s was prepared. The basic reagent consists of 68% (mass) urethane acrylate (containing cross-linking antioxidant and polymerization antioxidant), 30% (mass) of the above-mentioned coloring material and 2% (mass) of additives (such as pigment dispersant, internal mold release agent, etc.). Described solidifying agent is by the organic peroxide of 50% (mass) (peroxydicarbonate two (4-tert-butyl cyclohexyl ester); the P...

example 3

[0103] A resin composition and a molded body 1 similar to those in Example 1 were used.

[0104] Such as figure 2 As shown in (a), a resin composition is used to form a circular coating layer 2 in plan view on the surface of a molded body 1 .

[0105] In this coating film layer 2, the entire area of ​​30 mm x 30 mm was irradiated with a laser beam under the following conditions. Thus, the coating film layer 2 is cured to form a figure 2 (b) The surface decoration layer 3 shown.

[0106] a. Using a semiconductor laser oscillator manufactured by Spectra-Physics, at a wavelength of 795nm, CW (continuous wave) oscillation, output 2.5w, spot diameter Φ1.5mm, scanning speed 2.5mm / sec, and irradiation time 0.6sec Irradiation of a laser beam is carried out.

[0107] Furthermore, in this surface decoration layer 3, further figure 2 The star-shaped area 3a shown in (c) is divided into a plurality of sub-areas, and each divided sub-area is irradiated with a laser beam under the f...

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Abstract

A coating film 2 of an uncured resin composition which is curable in response to irradiation with an energy beam is formed on the surface of a molding. A desirable portion of the coating film 2 is irradiated with the energy beam. Thus, the portion of the coating film 2 irradiated with the energy beam is cured to form a surface decorative layer 3.

Description

technical field [0001] This application is based on Japanese Patent Application No. 2000-393872 filed on December 25, 2000, which is incorporated herein by reference. [0002] The present invention relates to a method of decorating a molded body, wherein required characters, patterns, illustrations, etc. are formed on the casing of electronic equipment such as electric shavers or food machines, or the surface of molded bodies of household items such as tableware, for The surface of the shaped body is decorated. Background technique [0003] In order to briefly illustrate instructions on the surface of molded objects such as electronic equipment and household items made of synthetic resin, metal, ceramics, etc., or to improve the design of molded objects, required characters, patterns, diagrams, etc. may be made formed on the surface of the shaped body to decorate the surface of the shaped body. [0004] Usually, when such decoration is added to the surface of the molded bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/06B05D7/24B29C59/16B41M5/26B44C5/00B44D5/00
CPCB41M5/267B44D5/00
Inventor 桝井干生东启二
Owner MATSUSHITA ELECTRIC WORKS LTD
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