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Composition capable of laser color marking and preparation method thereof

A technology of color marking and composition, applied in the field of polymer materials, can solve the problems of increasing energy consumption, increasing the complexity and difficulty of plastic matrix processing technology, and not finding laser marking additives, etc.

Inactive Publication Date: 2017-04-19
ROSE PLASTIC KUNSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of this multi-layer structure increases the complexity and difficulty of the processing technology of the plastic matrix, and increases the energy consumption due to the light transmittance of the transparent thermoplastic resin.
[0006] Currently, most plastic substrates do not have suitable laser marking additives for industrial production
At the same time, the application of laser marking still belongs to non-surface beautification decoration, how to get color marking and apply it to beautification decoration is a challenge in future work

Method used

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  • Composition capable of laser color marking and preparation method thereof
  • Composition capable of laser color marking and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] For polypropylene resin: 100 parts by weight of polypropylene resin, 0.05 part by weight of laser marking powder Iriotec 8835 (Merck, Germany), 0.1 part by weight of copper phthalocyanine, a temperature sensitive substance, and 0.1 part by weight of processing aid are placed in a mixer and mixed evenly , and then put the mixture into a twin-screw extruder for melt blending, extrusion and granulation, the extrusion temperature is 160-220°C, and the screw speed is 300rpm. Dry the extruded pellets in an oven at 90°C for 12 hours, and then inject them into standard strips at 160-220°C for laser marking tests.

Embodiment 2

[0028] For polypropylene resin: 100 parts by weight of polypropylene resin, 0.3 part by weight of laser marking powder Iriotec 8835 (Merck, Germany), 0.1 part by weight of copper phthalocyanine, a temperature sensitive substance, and 1 part by weight of processing aid are placed in a mixer and mixed evenly , and then put the mixture into a twin-screw extruder for melt blending, extrusion and granulation, the extrusion temperature is 160-220°C, and the screw speed is 300rpm. Dry the extruded pellets in an oven at 90°C for 12 hours, and then inject them into standard strips at 160-220°C for laser marking tests.

Embodiment 3

[0030] For polypropylene resin: 100 parts by weight of polypropylene resin, 2 parts by weight of laser marking powder Iriotec 8835 (Merck, Germany), 0.1 part by weight of copper phthalocyanine, a temperature sensitive substance, and 2 parts by weight of processing aid are placed in a mixer and mixed evenly , and then put the mixture into a twin-screw extruder for melt blending, extrusion and granulation, the extrusion temperature is 160-220°C, and the screw speed is 300rpm. Dry the extruded pellets in an oven at 90°C for 12 hours, and then inject them into standard strips at 160-220°C for laser marking tests.

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Abstract

The invention discloses a composition capable of laser color marking and a preparation method thereof. The composition comprises, by weight, 100 parts of a polymer, 0.05-2 parts of a laser marking powder, and 0.1-10 parts of a temperature sensing substance. The preparation method comprises the following step: carrying out melt blending on the above components including the polymer, the laser marking powder and the temperature sensing substance. By addition of the temperature sensing substance and by the utilization of heat generated during the laser marking process, the temperature sensing substance undergoes thermal decomposition, oxidation and other reactions at a certain temperature. Those reactions destroy the original material structure or a new substance is generated, and a new color is generated. The color change is unidirectional and irreversible. After cooling, the original color cannot be recovered. Therefore, a stable permanent mark can be formed on a product.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a composition capable of laser color marking and a preparation method thereof. Background technique [0002] Laser marking is a new type of marking method, which uses high-energy laser energy to irradiate the plastic surface to cause carbonization, foaming, and discoloration reactions, etc., so as to obtain marks of different colors from the substrate. At present, laser marking is mainly used in permanent marking, product anti-counterfeiting, tracking of important parts, etc. Compared with traditional printing marking technology, laser marking has three advantages: (1) non-contact processing, small thermal impact, ensuring the workpiece The original precision, clear and durable marking; (2) fast marking speed, easy operation, high-speed automatic operation, low production cost; (3) less pollution, it is a clean and environmentally friendly processing technology. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/34C08K5/3417
CPCC08K3/34C08K5/3417C08L23/12
Inventor 朱永
Owner ROSE PLASTIC KUNSHAN