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Method for solidifying edge seals of thermally sensitive base material

A technology of heat-sensitive substrates and curing methods, which is applied in the direction of surface coating liquid devices, coatings, pre-treated surfaces, etc., can solve the problems of edge banding, restriction, and complicated edge banding process, and achieve the goal of improving edge banding efficiency Effect

Inactive Publication Date: 2014-05-28
TIGER DRYLAC TAICANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The applicant tested various disclosed improvement schemes in the background technology, and found that they all used pre-sealing of heat-sensitive substrates in order to avoid the problem of cracks in the existing commercial powder coating spraying, specifically, If hot melt adhesive is used to apply edge banding, or UV-curable UV-curable coating is used to coat edge banding, although a certain procedure solves the problem of cracks caused by spraying conventional low-temperature curing powder coatings, the edge banding process is complicated and not suitable Edge sealing is performed on heat-sensitive substrates with complex shapes and structures. At the same time, the penetration of liquid application is poor, and thick coating cannot be achieved, which limits the strength and leveling of the edge sealing coating, and ultimately cannot produce high quality The heat-sensitive substrate edge-banding coating makes the application of powder coatings on the heat-sensitive substrate edge-banding subject to extremely difficult restrictions

Method used

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  • Method for solidifying edge seals of thermally sensitive base material
  • Method for solidifying edge seals of thermally sensitive base material
  • Method for solidifying edge seals of thermally sensitive base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A heat-sensitive base material edge sealing powder coating, wherein the powder coating comprises the following raw materials in parts by weight:

[0052] 63 parts of epoxy resin, wherein, epoxy resin is prepared by adopting semi-crystalline or full crystallization or superesterification process, and is used to reduce viscosity and improve curing speed. Specifically, in this embodiment, epoxy resin is obtained by adopting full Prepared by crystallization process;

[0053] 10 parts of curing agent, used to produce curing crosslinking reaction with epoxy resin; preferably, the curing agent is prepared by mixing one or more highly active curing agents to improve the strength of curing crosslinking reaction, more preferably, The highly active curing agent is any one or a mixture of imidazoline, hydrazide, and phenolic curing agents. Specifically, in this embodiment, the curing agent is an imidazoline highly active curing agent;

[0054] 20 parts of pigments and fillers, pre...

Embodiment 2

[0071]The remaining technical solutions of this embodiment 2 are the same as those of the above-mentioned embodiment 1, the difference is that a kind of MDF edge sealing coating, wherein, adopt the above-mentioned powder coating electrostatic spraying on the side of the MDF, and obtain after thermal curing. , the curing source is the heat generated by the resistance heating element, and the thermal curing temperature range is 140 ° C. Of course, in other embodiments, other ranges of thermal curing temperatures can also be selected. Preferably, the thermal curing temperature range is 100-200 ° C .

[0072] Specifically, in this embodiment, the specific process of the thermal curing method is: the operation steps are as follows:

[0073] A), the medium fiber board that its each side is sprayed with powder coating is installed on the mounting part in the curing equipment;

[0074] B), turn on the curing equipment, and the heat generated by the resistance heating element will cur...

Embodiment 3

[0078] All the other technical solutions of this embodiment 3 are the same as those of the above-mentioned embodiment 1, the only difference being that the powder coating comprises the following raw materials in parts by weight:

[0079] 25 parts of epoxy resin;

[0080] 20 parts of curing agent;

[0081] 35 parts of pigments and fillers;

[0082] 20 parts of auxiliary agent, specifically, in this embodiment, the auxiliary agent includes 3 parts of leveling agent, 5 parts of rheological agent, 5 parts of viscosity reducer, 3 parts of degassing agent and 4 parts of defoamer.

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Abstract

The invention relates to a method for solidifying edge seals of a thermally sensitive base material. The method includes: A) mounting the thermally sensitive base material with powder coating sprayed on every lateral side on a mounting piece of solidifying equipment; B) turning on the solidifying equipment so that a solidifying source can solidify one or two lateral sides of the thermally sensitive base material; C) rotating the mounting piece to drive the thermally sensitive base material to rotate so that the solidifying source can solidify all the laterals sides of the thermally sensitive base material; D) realizing quick edge sealing of the thermally sensitive base material. The method has the advantages that the problem that edge seal coating solidification may fail due to large impact in an edge seal coating solidification process since water moisture is evaporated from the interior of the thermally sensitive base material to the lateral sides of the thermally sensitive base material massively and quickly is avoided, edge sealing efficiency of the thermally sensitive base material is improved greatly, and the method is suitable for large-scale industrialized application.

Description

technical field [0001] The invention relates to a heat-sensitive substrate edge sealing curing technology, in particular to a curing method for heat-sensitive substrate edge sealing. Background technique [0002] Thermosetting powder coatings are widely used in various fields due to their advantages of no organic solvent, good environmental protection, high utilization rate, and convenient storage and transportation. Due to the heat sensitivity of heat-sensitive substrates (such as wood, fiberboard, plastic, cement board, etc.), conventional thermosetting powder coatings cannot be directly applied to heat-sensitive substrates. With the development of modern science and technology, there are many low-temperature curing powder coatings for heat-sensitive substrates. However, the following problems still exist in the actual production process: [0003] When the heat-sensitive substrate is baked and cured after the low-temperature curing powder coating is sprayed and cured, the...

Claims

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Application Information

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IPC IPC(8): B05D3/06B05D3/14C09D163/00C09D5/03C09D167/06C09D167/00
Inventor 刘际平高志豪顾颂文
Owner TIGER DRYLAC TAICANG
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