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Manufacturing method for high-density fiberboard

A high-density fiberboard and fiber technology, which is applied in fiber raw materials, fiber raw material processing, manufacturing tools, etc., can solve the problems of poor environmental protection and large amount of formaldehyde, and achieve excellent waterproof performance and low production costs.

Inactive Publication Date: 2017-08-04
YUNFU ZHENYING WOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Kangbei special board is a board formed by multi-layer kraft paper under high temperature and high pressure. It also has similar physical properties to high-density fiberboard, but it is relatively poor from the perspective of environmental protection, and its formaldehyde content is large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of high-density fiberboard, it comprises following processing step:

[0027] 1) Raw material preparation and pretreatment:

[0028] Raw materials are prepared by screening, storing, and magnetically separating the log material, the collected residual scrap of the rotary cutting board and the residual scrap of wood processing;

[0029] 2) Raw material preparation:

[0030] The prepared raw materials obtained in step 1) are transported to the cooking tank for cooking. During the cooking process, the steam pressure is controlled at 0.7 MPa, and the cooking time is 5 minutes. , and then the wood fiber pulp is sent to the drying system through the fiber nozzle, and at the same time, 600kg / m 3 Rubber material, 5kg / m 3 Pigment, 5kg / m 3 Insect repellent, 5kg / m 3 waterproofing agent, 5kg / m 3 antifungal agent and 5kg / m 3 antibacterial agent, after drying to obtain wood fiber, the wood fiber and 100kg / m 3 The flame retardant is mixed in a mixer...

Embodiment 2

[0038] A kind of preparation method of high-density fiberboard, it comprises following processing step:

[0039] 1) Raw material preparation and pretreatment:

[0040] Raw materials are prepared by screening, storing, and magnetically separating the log material, the collected residual scrap of the rotary cutting board and the residual scrap of wood processing;

[0041] 2) Raw material preparation:

[0042] The prepared raw materials obtained in step 1) are transported to a cooking tank for cooking. During the cooking process, the steam pressure is controlled at 0.9 MPa, and the cooking time is 10 minutes. The cooked raw materials are placed in a heat grinder for heat grinding to obtain wood Fiber refining, then the wood fiber refining is sent to the drying system through the fiber nozzle, while adding 400kg / m 3 Rubber material, 20kg / m 3 Pigment, 10kg / m 3 Insect repellent, 10kg / m 3 waterproof agent, 15kg / m 3 antifungal agent and 15kg / m 3 antibacterial agent, after dryin...

Embodiment 3

[0050] A kind of preparation method of high-density fiberboard, it comprises following processing step:

[0051] 1) Raw material preparation and pretreatment:

[0052] Raw materials are prepared by screening, storing, and magnetically separating the log material, the collected residual scrap of the rotary cutting board and the residual scrap of wood processing;

[0053] 2) Raw material preparation:

[0054] The prepared raw material 9 obtained in step 1) is transported to a cooking tank for cooking. During the cooking process, the steam pressure is controlled at 0.8 MPa, and the cooking time is 8 minutes. pulp, then the wood fiber pulp is sent to the drying system through the fiber nozzle, and 500kg / m 3 Rubber material, 10kg / m 3 Pigment, 7kg / m 3 Insect repellent, 8kg / m 3 waterproof agent, 12kg / m 3 antifungal agent and 12kg / m 3 antibacterial agent, after drying to obtain wood fiber, the wood fiber and 500kg / m 3 Rubber material, 70kg / m 3 The flame retardant is mixed in ...

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Abstract

The invention discloses a preparation method of high-density fiberboard, which comprises the following process steps: 1) preparation and pretreatment of raw materials; 2) preparation of raw materials: placing the cooked raw materials in a heat mill for heat grinding to obtain wood fiber Refining, and then the wood fiber is refined through the fiber nozzle. During the conveying process, sizing materials, pigments, insect repellents, water repellants, mildew proof agents and antibacterial agents are added, and the dried wood fibers and flame retardants are placed in the mixer. 3) Pre-treatment of board making: the pre-pressing pressure is controlled within the range of 6~8MPa; 4) Preparation of high-density fiberboard: the pressure of the pressing board is controlled at 18~25MPa during the hot pressing process Within the range, the hot-pressing temperature is 160-190°C, and the hot-pressing time is 4-9 minutes; 5) Post-processing of semi-finished products. The high-density fiberboard prepared by the invention has the advantages of low production cost, non-toxic and harmless, and has excellent waterproof performance, mildew-proof performance, insect-proof performance, antibacterial performance and fireproof performance.

Description

technical field [0001] The invention relates to the field of wood-based panels, in particular to a method for preparing high-density fiberboards. Background technique [0002] my country's wood-based panel production ranks first in the world, but the products have limited uses and are mainly used in general furniture, home furnishing and other fields. Under the existing industry and market structure, the innovation of wood-based panel manufacturing technology and products has become particularly important. On the basis of traditional wood-based panels, it is one of the development directions of wood-based panels to prepare wood-based panels with specific properties or uses. The development of functional wood-based panels mainly includes: wood-based panels with flame-retardant functions, which are used in areas with high requirements for flame-retardant functions such as indoor floors and doors in public places; Places with special acoustic requirements; lightweight fiberbo...

Claims

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Application Information

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IPC IPC(8): B27N3/12B27N1/02D21B1/12
CPCB27N3/12B27N1/02D21B1/12
Inventor 莫永坚
Owner YUNFU ZHENYING WOOD
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