A kind of manufacturing method of fiberboard

A manufacturing method and fiberboard technology, which are applied in the field of board manufacturing, can solve the problems of high density and high quality of fiberboard, and achieve the effects of reducing board density, reducing mass and light weight.

Active Publication Date: 2018-05-08
怀集宜美木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The fiberboard produced by the existing fiberboard production method has higher density and higher quality, which will cause more inconvenience during transportation and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment describes a production method of a fiberboard, which is characterized in that the fiberboard is made from red bark spruce, Korean pine, and poplar as raw materials, and is prepared according to the following steps;

[0026] (1): peeled red bark spruce, Korean pine, poplar are cut into slices, and the sliced ​​wood chips are washed; wherein: the red bark spruce, red pine, poplar weight ratio after peeling is 1:1:5;

[0027] (2): Mix the wood chips in step (1) and put them into the cooking chamber for pre-cooking, the pre-cooking temperature is 60°C, the pre-cooking time is 8min; the pre-cooking pressure is 0.5MPa, after the pre-cooking is completed, the pressure cooking The pressure of pressure cooking is 0.8MPa, the temperature of pressure cooking is 150°C, and the time of pressure cooking is 5min.

[0028] (3): Send the steamed wood chips obtained in step (2) into a thermal grinder for thermal grinding to make wood fibers. The thermal grinding temperat...

Embodiment 2

[0037] This embodiment describes a production method of a fiberboard, which is characterized in that the fiberboard is made from red bark spruce, Korean pine, and poplar as raw materials, and is prepared according to the following steps;

[0038] (1): peeled red bark spruce, Korean pine, poplar are cut into slices, and the sliced ​​wood chips are washed; wherein: the red bark spruce, red pine, poplar weight ratio after peeling is 1:1:5;

[0039] (2): Mix the wood chips in step (1) and put them into the cooking chamber for pre-cooking, the pre-cooking temperature is 50°C, the pre-cooking time is 9min; the pre-cooking pressure is 0.55MPa, after the pre-cooking is completed, pressurized cooking The pressure of pressure cooking is 0.9MPa, the temperature of pressure cooking is 152°C, and the time of pressure cooking is 5min.

[0040] (3): The steamed wood chips obtained in step (2) are sent into a heat grinder to make wood fiber. The heat grind temperature is 143° C., and the hea...

Embodiment 3

[0049] This embodiment describes a production method of a fiberboard, which is characterized in that the fiberboard is made from red bark spruce, Korean pine, and poplar as raw materials, and is prepared according to the following steps;

[0050] (1): peeled red bark spruce, Korean pine, poplar are cut into slices, and the sliced ​​wood chips are washed; wherein: the red bark spruce, red pine, poplar weight ratio after peeling is 1:1:5;

[0051] (2): Mix the wood chips in step (1) and put them into the cooking bin for pre-cooking, the pre-cooking temperature is 70°C, the pre-cooking time is 10min; the pre-cooking pressure is 0.6MPa, after the pre-cooking is completed, the pressure cooking Pressure cooking pressure 1MPa, pressure cooking temperature 155°C, pressure cooking time 5min;

[0052] (3): The steamed wood chips obtained in step (2) are sent to a heat mill for heat grinding to make wood fibers. The heat grinding temperature is 145° C., and the heat grinding pressure is...

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PUM

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Abstract

The invention discloses a manufacturing method of a fiber board. The manufacturing method includes following steps: mixing Korean spruce, Korean pine and poplar wood chips proportionally; steaming the wood chips, feeding the steamed wood chips into a defibrator to make wood fiber, and subjecting the wood fiber after defibration to air bursting to form cellosilk; drying the obtained cellosilk, using polyethylene glycol for soaking, and adopting diphenylmethane diisocyanate for gluing; paving and forming obtained cellosilk, and pre-pressing to form a board blank; preheating the board blank; feeding the preheated board blank into a hot press for hot press forming to form a hot-pressed board blank; standing, cooling, sanding, slicing, inspecting, and packaging the hot-pressed board blank. The manufacturing method has the advantages that by using the manufacturing method, the fiber board can be more loose and lighter in weight, and size increase ratio of the fiber board is far greater than mass increase ratio of the same, so that density of the fiber board is lowered; in the process of manufacturing, a cross-linking structure can be generated between diphenylmethane diisocyanate and polyethylene glycol, so that improving of strength of a fiber gluing interface is facilitated.

Description

technical field [0001] The invention relates to a method for manufacturing boards, in particular to a method for manufacturing fiber boards. Background technique [0002] Fiberboard refers to a wood-based panel made of lignocellulosic fibers interwoven and using their inherent adhesive properties. Fiberboard is made of wood fiber or other vegetable fiber, and is made by applying adhesive during the manufacturing process. Fiberboard has the advantages of uniform material, small vertical and horizontal strength difference, not easy to crack, etc., and has a wide range of uses. [0003] Chinese patent ZL201310067552.X discloses a production method of fiberboard, the production method includes the following steps: 1, sizing: mixing the fiber and the mixed glue uniformly; 2, drying: drying the uniformly mixed mixture Drying; 3. Paving: paving the dried fiber mixture; 4. Hot pressing: hot pressing the paved mixed fibers for 48-72 hours and then sanding and molding. [0004] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C5/00D21C3/26D21D1/20B27N3/04B27N3/08
CPCB27N3/04B27N3/08D21C3/26D21C5/00D21D1/20
Inventor 植二华
Owner 怀集宜美木业有限公司
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