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Semi-dry airflow forming preparation process of fiberboard

A technology of airflow forming and preparation process, which is applied in the direction of fiberboard, non-fiber pulp addition, fiber raw material treatment, etc. It can solve the problems of difficult control of uniform constant value, difficulty in ensuring product uniformity, and high moisture content of fibers.

Active Publication Date: 2021-08-20
南通跃香拉链有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the production of semi-dry fiberboard, because the fiber has not been dried, the moisture content of the fiber is high, and it is difficult to control to a uniform constant value. The fiber is easy to agglomerate during molding and preparation. If the agglomerated fiber is not broken up, it will cause product damage. Uniformity is difficult to guarantee

Method used

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  • Semi-dry airflow forming preparation process of fiberboard
  • Semi-dry airflow forming preparation process of fiberboard
  • Semi-dry airflow forming preparation process of fiberboard

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Embodiment 1

[0048] see Figure 1-2 , a semi-dry airflow forming preparation process of fiberboard, comprising the following steps:

[0049] S1. Fiber separation: steam the wood chip raw material, send it to a thermal mill to make wood fiber, and then gas-explode the wood fiber into fiber filaments after thermal grinding for standby;

[0050] S2. Slurry treatment: mix fiber filaments with additives and pure water to obtain fiber slurry. The additives in S2 include paraffin emulsion, waterproofing agent, preservative, and fire-resistant agent. The paraffin emulsion, waterproofing agent, and preservative , The mass ratio of the refractory agent is 3:0.5:0.3:0.2, the preservative is selected from pentachlorophenol, and the refractory agent is selected from MgNH4PO4 to improve the excellent performance of the finished product;

[0051] S3, semi-dry airflow group breaking treatment:

[0052] S31. Pour the fiber slurry into the mold for paving and smoothing, and set up a plurality of guide rod...

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Abstract

The invention discloses a semi-dry type airflow forming preparation process of a fiberboard, and belongs to the field of fiberboard preparation processes. A plurality of guide rods are erected on a mold, the guide rods are movably sleeved with air guide glue overflow balls, airflow is intermittently supplied to the two ends of the mold, the introduced air flow is beneficial for playing a preliminary scattering role on the agglomerated fibers on one hand and pushing the air guide glue overflowing ball to horizontally move on the guide rod on the other hand, and the magnetic agglomerate breaking component at the bottom of the air guide glue overflowing ball mechanically scatters the agglomerated fibers in the moving process, so that the fiber carding effect is further improved; and a magnetic field is intermittently applied below the mold, so that the magnetic cluster breaking component moves up and down in a reciprocating manner, the scattering depth is effectively adjusted, rubber materials are uniformly attached to fiber yarns along with overflowing of the rubber materials and airflow under the pressure applying condition, the adhesive forming effect is improved, and bubbles formed at the air guide glue overflowing ball overflowing positions easily blow away small clusters.

Description

technical field [0001] The invention relates to the field of fiberboard preparation technology, more specifically, relates to a semi-dry airflow forming preparation technology of fiberboard. Background technique [0002] Fiberboard is a wood-based panel made of wood fiber or other plant fiber, applied with urea-formaldehyde resin or other suitable adhesives. The production process of fiberboard is divided into three types: wet method, dry method and semi-dry method. The wet production process uses water as the carrier of fiber transportation. Its mechanism is to make use of the friction force generated by the interweaving of fibers, the bonding force generated between the surface molecules of the fibers and the cementing force generated by the fiber content to make a certain strength. fiberboard. The dry production process uses air as the fiber transport carrier. The fiber preparation is a one-time separation method. Generally, no fine grinding is required, and adhesives n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21J1/00D21J1/04D21H21/16D21H21/36D21H21/14D21H17/60
CPCD21H17/60D21H21/14D21H21/16D21H21/36D21J1/00D21J1/04
Inventor 赖铭
Owner 南通跃香拉链有限公司
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