Production method of environment-friendly density board

A production method and technology for MDF, which are applied in the pretreatment of molding materials, household appliances, manufacturing tools, etc., can solve the problems of reducing the strength of MDF and uneven density distribution of MDF, and improve crack resistance and reduce porosity. , the effect of improving the mechanical strength

Active Publication Date: 2022-06-03
江苏苏林木业有限公司
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Problems solved by technology

[0004] The existing density boards will go through the process of pressing and forming during processing, but due to the irregularity of raw materials, some pores will inevitably appear during the pressing process, thereby reducing the strength of density boards and easily causing density boards. Uneven distribution limits the application of MDF

Method used

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  • Production method of environment-friendly density board
  • Production method of environment-friendly density board
  • Production method of environment-friendly density board

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Experimental program
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Embodiment

[0043] see Figure 1-2 , a production method of environment-friendly MDF, comprising the following steps:

[0044] S1, the wood raw material is sliced ​​to obtain wood chips, and the wood chips are cleaned to remove impurities;

[0045] S2, put the wood chips into the vertical cooking tank for cooking to be fully softened, and then enter the thermal mill to grind into fibers;

[0046] S3. After drying the fiber to a moisture content of less than 8%, the adhesive is fully mixed with it by means of strong airflow spraying to obtain a blank;

[0047] S4. Pave the blank in the template twice, and evenly pre-embed a plurality of gap-filling entrainments in the middle. After the paving is completed, pre-press to obtain the blank;

[0048] S5. The blank plate is sent into the hot press for hot pressing, and the interstitial action of interstitial entrainment is triggered to obtain a semi-finished product, and the semi-finished product is sanded and cut to obtain a density board.

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Abstract

The invention discloses a production method of an environment-friendly density board, belongs to the technical field of density board production, and can realize that in the production process of the density board, a plurality of uniformly distributed gap filling entrainments are pre-buried in a paving process, and then a pre-pressing process is carried out, so that the combination effect between the gap filling entrainments and the density board is improved; and in the final hot pressing process, the gap filling action of gap filling entrainment is triggered, specifically, the gap filling microspheres are melted under the action of high temperature and carry powder to flow and fill existing pores under the extrusion action, the purpose of eliminating the pores is achieved, and the residual gap filling microspheres can be reserved in the density board to achieve the effect of improving the strength. Compared with an existing density board, the porosity of the density board produced through the method is obviously reduced, density distribution is more uniform, and the mechanical strength is obviously improved.

Description

technical field [0001] The present invention relates to the technical field of MDF production, and more particularly, to a production method of environment-friendly MDF. Background technique [0002] The full name of MDF is density fiberboard, which is made of wood fiber or other plant fiber as raw material, prepared from fiber, applied with synthetic resin, and pressed under the condition of heating and pressure. [0003] According to its density, it can be divided into high-density fiberboard, medium-density fiberboard and low-density fiberboard. MDF is widely used in domestic furniture, decoration, musical instruments and packaging due to its uniform structure, fine material, stable performance, impact resistance and easy processing. [0004] The existing MDF will go through the process of pressing and forming during processing, but due to the irregularity of the raw materials, some pores will inevitably appear during the pressing process, thereby reducing the strength o...

Claims

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Application Information

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IPC IPC(8): B27N3/04B27N3/12B27N1/00B27L11/08B27M1/08
CPCB27N3/04B27N3/12B27N1/00B27L11/08B27M1/08Y02W30/91
Inventor 李洋李正明李维刚
Owner 江苏苏林木业有限公司
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