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Composition additive for laser marker

A technology of laser marking and composition, which is applied in the field of laser marking additive composition, can solve the problem of high light wave transmittance, and achieve the effect of fast response and sufficient energy utilization

Inactive Publication Date: 2017-01-11
CHANGZHOU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most polymers (P) have a high transmittance for light waves with a wavelength of 1.06 μm, so they cannot be directly marked by laser technology

Method used

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  • Composition additive for laser marker
  • Composition additive for laser marker
  • Composition additive for laser marker

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] Preparation of Laser Marking Additive Microparticles:

[0020] P-toluenesulfonic acid (including its homologues) is a strong acid, which can react with oxides (or hydrates of oxides) in aqueous solution, evaporate to dryness, then dry at 110°C-140°C for 30 minutes, cool and grind to D50 is between 10-50um.

[0021] Marking sample preparation and performance measurement:

[0022] Blending, granulation, and tableting by conventional methods are used to prepare polymer test pieces containing the laser marking additive particulate composition.

[0023] Mark with the laser marking machine model KDD-50 produced by Suzhou Kaitai Laser Technology Co., Ltd. Marking process conditions: current: 9-13A; scanning speed: 500-2000mm / min.

[0024] The color difference was measured with a model 7000A colorimeter from X-Rite Company of the United States. According to the CIE Lab color space, from the measured ΔL, Δa and Δb of the label, ΔE was calculated. According to literature rep...

Embodiment 1

[0032] Press Sb 2 o 3 : p-toluenesulfonic acid=1:2 (molar ratio) react at (110°C) to obtain the composition. Polymer PE. Marking scanning speed: 500mm / s. Color of the polymer added to the particulate composition after processing: white.

[0033] Test Results

[0034]

Embodiment 2

[0036] Press Sb 2 o 3 : p-toluenesulfonic acid=1:4 (molar ratio) reacted at 125°C to obtain a composition. Polymer PE. Marking scanning speed: 500mm / s. The color of the polymer added to the particulate composition remained white after processing.

[0037] Test Results

[0038]

[0039] comparative data

[0040]

[0041] Comparative example 1, embodiment 2 and comparative example data can confirm to modify Sb with p-toluenesulfonic acid 2 o 3 at the same Sb 2 o 3 The ΔE of the label can be greatly improved at a lower content; especially, the effect of a high content of p-toluenesulfonate in the additive is more significant than a low content. Example 3

[0042] Press Bi 2 o 3 : p-toluenesulfonic acid=1:2 (molar ratio) 110°C reaction to obtain the composition. Polymer PE. Marking scanning speed: 500mm / s. Color of the polymer added to the composition after processing: white.

[0043] Test Results

[0044] Composition content / % Bi 2 o 3 content...

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Abstract

The invention discloses a composition additive for a laser marker and belongs to the technical field of laser machining. The composition additive is prepared from one or a mixture of reaction products (or salts) of iron, nickel, cobalt, lead, tin, antimony or bismuth and p-toluenesulfonic acid (or homologous series), and a precursor, wherein the mol ratio of metal ions to a corresponding oxide and p-toluenesulfonate anion (or homologous series) is 1 to (2 to 6). According to a molecular design concept, a series of micro-granular laser marker additive composition for a shallow-color polymer is developed; the granular composition can be used for absorbing radiation of laser with the wavelength of 1.06 microns and enable micro-granules and a polymer thin layer covering the micro-granules to generate a decomposition reaction; and a deep-color product generated by decomposition can form a deep-color marker on the shallow-color polymer under the positive cooperative effect, and a two-dimensional image of the marker reaches a machine scannable identification grade.

Description

technical field [0001] The invention belongs to the technical field of laser processing, in particular to a laser marking additive composition obtained based on a new mechanism and molecular design. Background technique [0002] Laser marking technology has the characteristics of high speed, high efficiency, energy saving, and environmental protection. It has been widely used in industrial production and has its unique advantages in the field of processing plastic (polymer) products. In particular, laser marking products have the advantages of longer service life and scratch resistance than printed products. Nd:YAG pulsed lasers emitting at a wavelength of 1.06 μm are commonly used for marking light-colored polymers. Most polymers (P) have a high transmittance for light waves with a wavelength of 1.06 μm, so they cannot be directly marked by laser technology. For this purpose laser marking additives (A) are added to the polymer. In order to improve the efficiency of laser...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L75/04C08K5/42
CPCC08K5/42C08L23/06C08L75/04
Inventor 方建波吴盾陈思佳毛江王平顾浩
Owner CHANGZHOU UNIV
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