Continuous flat pressing process for light facing oriented strand board

An oriented strand board, lightweight technology, used in flat products, manufacturing tools, wood processing appliances, etc., can solve problems such as difficulty in meeting industry standards, unqualified internal bonding strength, low core density, etc., to achieve convenient operation and easy promotion. , the effect of low density

Active Publication Date: 2021-07-23
SHANDONG FOREST SCI RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the inventors found that: when using large shavings to prepare the core layer and fine shavings to prepare the surface layer, the existing production method will lead to too low density of the core layer and too high density of the surface layer , the internal bonding strength leads to serious substandard, difficult to meet industry standards

Method used

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  • Continuous flat pressing process for light facing oriented strand board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A layered hot-pressing process for preparing lightweight particleboard from ultra-thin large flakes, comprising:

[0046]1) Choose a density less than 0.45g / cm 3 , the form is wood edge bark or small-diameter wood whose short side is not less than 3cm, and wood with a moisture content of 38% is used as raw material

[0047] 2) Use a rotary cutter to cut the wood into ultra-thin large pieces at one time, with shavings 100mm long and 0.25mm thick.

[0048] 3) drying the shavings through a mesh belt type at low temperature to a moisture content of 10-12%;

[0049] 4) Sizing the dried shavings, the amount of sizing is 4%;

[0050] 5) Evenly pave the ultra-thin large shavings after sizing to obtain a core slab;

[0051] 6) The core layer slab is pre-pressed through the first stage of hot pressing; the core layer slab is sent to the hot press for pre-pressing to reduce the stacked thickness of the slab. The hot-pressing temperature is 190°C and the speed of the press is 31...

Embodiment 2

[0057] A layered hot-pressing process for preparing lightweight particleboard from ultra-thin large flakes, comprising:

[0058] 1) Choose a density less than 0.45g / cm 3 , the shape is wood edge bark or small-diameter wood whose short side is not less than 3cm, and wood with a moisture content of not less than 30% as raw materials

[0059] 2) Use a rotary cutter to cut the wood into ultra-thin large pieces at one time, with shavings 80mm long and 0.25mm thick.

[0060] 3) drying the shavings through a mesh belt type at low temperature to a moisture content of 10-12%;

[0061] 4) Sizing the dried shavings, the amount of sizing is 4%;

[0062] 5) Evenly pave the ultra-thin large shavings after sizing to obtain a core slab;

[0063] 6) The core slab is pre-pressed through the first stage of hot pressing; the core slab is sent to the hot press for pre-pressing to reduce the stacked thickness of the slab. The hot-pressing temperature is 170°C and the speed of the press is 310mm / ...

Embodiment 3

[0068] A layered hot-pressing process for preparing lightweight particleboard from ultra-thin large flakes, comprising:

[0069] 1) Choose a density less than 0.45g / cm 3 , the shape is wood edge bark or small-diameter wood whose short side is not less than 3cm, and wood with a moisture content of not less than 30% as raw materials

[0070] 2) Use a rotary cutter to cut the wood into ultra-thin large pieces at one time, with shavings 200mm long and 0.25mm thick.

[0071] 3) drying the shavings through a mesh belt type at low temperature to a moisture content of 10-12%;

[0072] 4) Sizing the dried shavings, the amount of sizing is 4%;

[0073] 5) Evenly pave the ultra-thin large shavings after sizing to obtain a core slab;

[0074] 6) The core slab is pre-pressed through the first stage of hot pressing; the core slab is sent to the hot press for pre-pressing to reduce the stacked thickness of the slab. The hot-pressing temperature is 220°C and the speed of the press is 310mm...

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Abstract

The invention belongs to the field of shaving board preparation, and relates to a continuous flat pressing process for a light facing oriented strand board. The continuous flat pressing process comprises the steps that ultrathin large wood shavings serve as raw materials to prepare a core layer board blank, and the core layer board blank is pre-pressed to obtain a hot-pressed core layer board blank; and the lower surface layer plate blank, the hot-pressed core layer plate and the upper surface layer plate blank are sequentially paved from bottom to top to form a complete plate blank, and hot-pressing shaping is carried out to obtain the finished product. According to the continuous flat pressing process, the industrial production technology of the light shaving board is achieved on a layered hot-pressing production line, the continuous flat pressing process is obviously different from common shaving board production, and the light shaving board prepared through the continuous flat pressing process is low in density, uniform and good in performance and can meet the requirement of industrial production.

Description

technical field [0001] The invention belongs to the technical field of particle board preparation, and in particular relates to a continuous flat pressing process of light-weight oriented particle board with decorative surface. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Particleboard is also called particle board, which cuts various branches, small-diameter wood, fast-growing wood, sawdust, etc. A kind of wood-based panel, the particles are not evenly arranged. [0004] Particleboard is divided into three types according to the product: low density (0.25-0.45 g / cubic centimeter), medium density (0.45-0.60 g / cubic cm), and high-density (0.60-1.3 g / cubic cm). 0.60-0....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N1/02B27N3/02B27N3/10B27N3/20
CPCB27N1/0209B27N3/02B27N3/10B27N3/203
Inventor 何明明李长贵张亚慧于文吉马玉珍葛立军王雅慧霍子微朱景振朱文成马安宝王钧
Owner SHANDONG FOREST SCI RES INST
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