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Laser ray transmitting colored resin composition and related technique

A resin composition and permeability technology, applied in the field of laser welding body manufacturing, can solve the problems of prolonged production takt time, decreased productivity, increased production cost, etc., achieving good quality, reduced gap, and stable welding strength Effect

Inactive Publication Date: 2007-03-07
ORIENT CHEM INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the method of reducing the gap by pressurization is accompanied by the following problems, that is, due to the introduction cost of pressurization equipment such as pneumatic clamps and the time required to install the target member to be laser welded in the pressurization equipment, production Increase in cost and decrease in productivity (e.g. extension of takt time, etc.)

Method used

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  • Laser ray transmitting colored resin composition and related technique
  • Laser ray transmitting colored resin composition and related technique
  • Laser ray transmitting colored resin composition and related technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0120] According to the method of mixing eBIND LTW-8400C (a laser-transmitting colorant for PPS resin produced by Oriental Chemical Industry Co., Ltd. ["eBIND " and "LTW" are both registered trademarks] measured by diluting them 25 times, mixing the two, and using an injection molding machine (manufactured by Toyo Machinery & Metal Co., Ltd., trade name: Si-50), through a process having a length of 80 mm x width 50 mm x thickness 1 mm The cuboid-shaped cavity mold, the cylinder temperature is 320 ° C, the mold temperature is 130 ° C, according to the usual method to inject the resulting mixture into the mold, the appearance and surface gloss are good, and there is no color difference. Uniform black laser transmittance test slice (Figure 4).

Embodiment 2

[0122] According to the measurement of diluting eBIND LTW-8400C 25 times with Fotoron 1130A6, the two were mixed, and using an injection molding machine (manufactured by Toyo Kikaku Metal Co., Ltd., trade name: Si-50), a mold with a length of 80 mm × width 50 mm × thickness was formed. A mold with a cuboid shape cavity of 1mm, the cylinder temperature is 320°C, and the mold temperature is 140°C. The obtained mixture is injected into molding according to the usual method, and the appearance and surface gloss are good, and uniform black laser transmission without color difference is obtained. test piece.

Embodiment 3

[0124] According to the measurement of diluting eBIND LTW-8400C 25 times with Fotoron 1130A6, the two were mixed, and using an injection molding machine (manufactured by Toyo Kikaku Metal Co., Ltd., trade name: Si-50), a mold with a length of 80 mm × width 50 mm × thickness was formed. A mold with a cuboid cavity of 1 mm is used. The cylinder temperature is 320°C and the mold temperature is 150°C. The obtained mixture is injected and molded according to the usual method to obtain a uniform black laser transmittance with good appearance and surface gloss and no color difference. test piece.

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Abstract

Laser ray transmitting colored resin composition comprising a polyphenylene sulfide resin and a colorant having an endothermic peak between 200°C and 300°C as determined by TG / DTA thermal analysis, wherein the difference T C -T N between the crystallization point T C of the laser ray transmitting colored resin composition and the crystallization point T N of the same composition as said composition except for not containing the aforementioned colorant, is not less than 0°C as determined by DSC thermal analysis. Laser ray transmitting material made of the laser ray transmitting colored resin composition, and having one exothermic energy peak and one endothermic energy peak as determined by DSC thermal analysis. The laser ray transmitting colored resin composition excellent in molding accuracy, good in molded product appearance and gloss, capable of preventing or effectively reducing the gap between the materials to be welded in the case of a molded product used for laser welding, and good in heat resistance and fastness, and the laser ray transmitting material excellent in dimension stability and shape stability and capable of preventing or effectively reducing the gap between the materials to be welded when used for laser welding.

Description

technical field [0001] The present invention relates to a laser-transmitting colored resin composition, a laser-transmitting member formed from the resin composition, a laser-transmitting colored resin composition for forming a laser-transmitting member, a method for producing a laser-transmitting member, A laser-transmitting member for laser welding and a method for producing a laser-welded body. Background technique [0002] As a method of joining members made of thermoplastic synthetic resin, a method by laser welding is known. Such laser welding is performed, for example, by the following method. One member exhibiting laser light transmittance is brought into contact with the other member exhibiting laser light absorbability. Laser light is irradiated from the side of the laser-transmitting member to the contact portion of the two members, and the laser light transmitted through the laser-transmitting member is absorbed by the laser-absorbing member, thereby causing th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02B29C65/16
CPCB29C65/1616B29C66/43B29K2277/00B29C65/1635B29K2105/0079B29K2309/08B29C65/1696B29C65/1674B29C65/8207B29C66/1122B29C65/8215B29K2995/0073B29C66/12841B29K2309/00B29C66/128B29K2995/0027B29C65/1683B29C65/1654B29C66/71C08K5/0041B29C66/81267B29C66/939B29C65/168B29C66/7332B29K2995/0022B29C66/14B29C66/305B29C66/8242B29K2307/00B29K2277/10B29K2267/00B29C66/1282B29C65/4815B29C65/5057B29C66/7311B29C66/73321B29C66/73921B29C66/9161B29C66/919B29C66/934C08L81/02B29K2081/04C08G75/02
Inventor 畑瀬芳輝油科平八
Owner ORIENT CHEM INDS
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