Production method of particleboard

A production method and particle board technology, which are applied in the field of wood processing, can solve the problems of high production cost, high energy consumption, low efficiency, etc., and achieve the effects of reducing hot pressing time, improving hot pressing forming rate and reducing production cost.

Inactive Publication Date: 2017-11-24
广西祥盛家居材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional particleboard production process has the problems of high production cost, high energy consumption and low efficiency

Method used

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  • Production method of particleboard

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of production method of chipboard, is made up of following steps:

[0033] (1) Preparation of shavings: select the raw twig wood, cut it with a chipper, and then screen it with a screening machine to remove unqualified wood chips, bark, sand and metal debris to obtain twig wood slices; select broken veneer , after crushing with a hammer planer, then screen with a screening machine to obtain broken veneer wood chips; the branch wood slices and broken veneer wood chips are sent to a planer for planing to obtain flake shavings;

[0034] (2) Drying and screening: the flaky shavings are sent into a single-channel flue gas dryer for drying, the drying temperature is 130°C, and the moisture content of the dried flaky shavings is 1.5%; the dried flaky shavings are screened into The surface layer of fine shavings and the core layer of coarse shavings, and the surface layer of fine shavings and the core layer of coarse shavings are insulated at a temperature of 45°C; the s...

Embodiment 2

[0046] The preparation method of the urea-formaldehyde resin glue of present embodiment and embodiment 1 is identical, and difference is:

[0047] A kind of production method of chipboard, is made up of following steps:

[0048] (1) Preparation of shavings: select the raw twig wood, cut it with a chipper, and then screen it with a screening machine to remove unqualified wood chips, bark, sand and metal debris to obtain twig wood slices; select broken veneer , after crushing with a hammer planer, then screen with a screening machine to obtain broken veneer wood chips; the branch wood slices and broken veneer wood chips are sent to a planer for planing to obtain flake shavings;

[0049] (2) Drying and screening: the flaky shavings are sent into a single-channel flue gas dryer for drying, the drying temperature is 160° C., and the moisture content of the dried flaky shavings is 2.5%; the dried flaky shavings are screened into The surface layer of fine shavings and the core layer...

Embodiment 3

[0055] The preparation method of present embodiment and embodiment 1 and other processing parameters are identical, and difference is:

[0056] Step (5) hot pressing forming: hot pressing the pre-pressed slab with a continuous flat pressing hot press to obtain a raw board; the hot pressing forming stage consists of a high pressure hot pressing zone, a low pressure hot pressing zone and a secondary pressurization The composition of the hot-press zone, the pressure of the high-pressure hot-press zone is 3N / mm 2 , the temperature is 230°C; the low-pressure hot-press zone consists of a front section and a back section, and the pressure of the front section is 2.2N / mm 2 , the temperature is 230°C; the pressure in the latter section is 1.5N / mm 2 , the temperature is 210°C; the pressure in the secondary pressurized hot pressing zone is 1.0N / mm 2 , the temperature is 190° C.; the thermal compression factor is 5.5 s / mm.

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Abstract

The invention discloses a production method of a particleboard. The production method comprises the following steps of (1) wood shaving preparation; (2), drying and screening; (3) glue application; (4) laying and precompression; (5) hot press molding; and (6) edge sawing and sanding. According to the production method provided by invention, rough core layer wood shavings subjected to glue application are pretreated, and then procedures including laying, precompression and hot press molding are carried out, so that the hot pressing time can be effectively reduced, the hot press molding ratio is increased, and the production efficiency is improved; the particleboard prepared by the production method is low in cost and free formaldehyde releasing quantity and high in strength at the same time; and the production method provided by the invention is capable of effectively improving the quality of a particleboard product and increasing the benefit of an enterprise and is worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a production method of particleboard. Background technique [0002] As one of the three major wood-based panels, particleboard is mainly used in interior decoration, furniture production and other fields. At present, in the domestic traditional particleboard production process, the main raw materials are harvesting residues, branch wood and wood processing residues. The wood is cut into wood chips of required specifications by a slicer, and after screening, it is sliced ​​into shavings by a ring planer. The wet shavings are dried by a dryer to form dry shavings, and the dry shavings are stored, sieved and air-selected to form surface shavings and core shavings, and then paved into a three-layer structure slab by a split paving machine, and the slab is pre-pressed , hot pressing to form particleboard. The traditional particleboard production process has the problems of h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/10B27L11/02B27N1/02B27N3/18
CPCB27N3/10B27L11/02B27N1/0209B27N3/18B27N3/183
Inventor 黄正规陆艺黄源泽
Owner 广西祥盛家居材料科技股份有限公司
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