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Medium-density fiberboard

A fiberboard and board body technology, applied in the direction of coating, pretreatment surface, powder coating, etc., can solve the problems of complex edge banding process, edge banding, powder coating constraints, etc., to meet the requirements of mechanical strength and simple edge banding process convenient effect

Inactive Publication Date: 2014-05-21
TIGER DRYLAC TAICANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The applicant has tested various disclosed improvement schemes in the background technology, and found that they are all in order to avoid the problem of cracks existing in the spraying of existing commercialized powder coatings, and use the MDF to carry out edge sealing in advance, 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 For edge banding of MDF with complex shape and structure, at the same time, the penetration of liquid application is poor, and thick coating cannot be achieved, so that the strength and leveling of the edge banding coating are limited, and ultimately it is impossible to produce high quality The MDF edge-banding coating makes the application of powder coatings on MDF edge-banding subject to extremely difficult constraints

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0043] See figure 2 As shown, a kind of medium fiber board comprises a medium fiber board body 100, the side of the board body has an edge sealing coating 200, and a thermosetting coating 300 is provided on the edge sealing coating 200 and on the surface of the board body 100, wherein the sealing The edge coating 200 is obtained by electrostatic spraying and infrared spectrum curing on the side of the board body 100 with powder coating for edge sealing. The specific wavelength range of the infrared spectrum is 100-300 μm. Certainly, in other specific implementation manners, infrared spectra of other specific wavelength ranges may also be selected.

[0044] In this embodiment, the powder coating for edge sealing includes the following raw materials in parts by weight:

[0045] 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. S...

Embodiment 2

[0059] The rest of the technical solutions of this embodiment 2 are the same as those of the above-mentioned embodiment 1, the only difference being that the powder coating for edge sealing includes the following raw materials in parts by weight:

[0060] 25 parts of epoxy resin;

[0061] 20 parts of curing agent;

[0062] 35 parts of pigments and fillers;

[0063] 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.

Embodiment 3

[0065] The remaining technical solutions of this embodiment 3 are the same as those of the above-mentioned embodiment 1, and the only difference is that the powder coating for edge sealing includes the following raw materials in parts by weight:

[0066] 30 parts of epoxy resin;

[0067] 18 parts of curing agent;

[0068] 32 parts of pigments and fillers;

[0069]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 medium-density fiberboard, which comprises a medium-density fiberboard body, wherein an edge-sealing coating is arranged on the lateral surface of the board body; a thermosetting coating is arranged on the edge-sealing coating and the surface of the board body; the edge-sealing coating is obtained by electrostatically spray-coating and curing an edge-sealing powder coating on the lateral surface of the board body; the thermosetting coating is obtained by electrostatically spray-coating and curing a low-temperature curing powder coating on the edge-sealing coating and the surface of the board body. According to the medium-density fiberboard, a good edge sealing effect can be achieved, and cracks in the lateral surface of the medium-density fiberboard are effectively avoided; an electrostatic spray-coating mode is adopted, so that an edge-sealing process is simple, convenient and suitable for the edge sealing of substrate workpieces in various shapes.

Description

technical field [0001] The invention relates to a board, in particular to a medium fiber board. 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] For heat-sensitive substrates such as MDF, cracks will appear on the side of the substrate during the baking and curing process after spraying of low-temperature curing powder coatings and after curing. This is b...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12C09D167/06C09D167/00C09D5/03B05D1/06B05D3/02B05D3/06B05D7/24
Inventor 刘际平高志豪顾颂文
Owner TIGER DRYLAC TAICANG
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