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Method for producing pressed-fibre board by using apple branch and obsolete fruit tree

A technology of apple tree branches and fiberboard, which is applied in the direction of fiber raw materials, fiber raw material processing, application, etc., can solve the problems of pollution and waste, achieve the effects of reducing loss, reducing hair and roughness, and solving stacking and tearing

Active Publication Date: 2008-09-24
陕西中兴林产有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for producing fiberboard by using apple tree branches and eliminating fruit trees, which not only solves the phenomenon of pollution and waste caused by wood accumulation, but also realizes the way to produce high-grade boards with cheap raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Use apple tree pruning as raw material to produce 2.5mm calendered sheet.

[0019] Apple tree prunings are broken into 10-30mm long wood chips on the crusher first. After screening and washing, they enter the thermal grinding system for thermal grinding and pre-cooking with steam. The steam pressure of the cooking tank of the thermal grinding system is 7bar, and the pressure The steam flow is 7.3bar, the steam flow is 2000kg / h, and the fiber is separated after steam cooking for 3 minutes. The separated fiber is first applied with 10% glue and 0.3% paraffin, and then 1% curing agent is applied for curing; the cured fiber is paved Slabs are formed and pre-pressed. During the pre-pressing process, the speed of the breaking rollers is 350r / min, the speed of the throwing rollers is 50r / min, and the exhaust length of the pre-pressing is 10m. The surface height is 50mm lower than the first drive roller of the mesh belt; the pre-pressed slab is then hot-pressed. During the hot-...

Embodiment 2

[0021] Use apple tree pruning as raw material to produce 3mm calendered sheet.

[0022] Apple tree pruning is first broken into 10-30mm long wood chips on the crusher. After screening and washing, it enters the thermal grinding system for thermal grinding and pre-cooking with steam. The steam pressure of the cooking tank of the thermal grinding system is controlled at 7-8.5bar , the pressure of the mill chamber is controlled at 7.3-8.8bar, the steam flow rate is 2500kg / h, and the fiber is separated after steam cooking for 3-4min. The separated fiber is firstly applied with 10% glue and 0.3% paraffin, and then applied with 1% curing agent. Curing; pave the cured fiber into a slab and pre-press. During the pre-pressing process, the speed of the breaking roller is 350r / min, the speed of the throwing roller is 60r / min, and the exhaust length of the pre-pressing is 10m. The height of the upper surface of the slab at the entrance of the breathable mesh belt is 100mm lower than the f...

Embodiment 3

[0024] Using eliminated apple trees as raw materials, 6mm calendered sheets are produced.

[0025] First, the apple tree pruning is broken into 10-30mm wood chips on the crusher. After screening and washing, it enters the thermal grinding system for thermal grinding and pre-cooking with steam. The steam pressure of the cooking tank of the thermal grinding system is 7.8bar, and the pressure of the grinding chamber 8.3bar, steam flow rate 2500kg / h, fiber separation after steam cooking for 3.5min, first apply 10% glue and 0.3% paraffin to the separated fiber, and then apply 2.5% curing agent for curing; lay the cured fiber Assembled into a slab and pre-pressed. During the pre-pressing process, the speed of the breaking roller is 250r / min, the speed of the throwing roller is 85r / min, and the exhaust length of the pre-pressing is 10m. The surface height is 120mm lower than the height of the first drive roller of the mesh belt; the pre-pressed slab is then hot-pressed. During the ho...

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PUM

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Abstract

The invention provides a method for beaverboard production with branches of apple trees and eliminated fruit trees, and belongs to the technical field of a hard board. The prior hard boards mostly use lumbers in planted forest and wild wood as board producing materials, but the planted forest and the wild wood have a long vegetative cycle, the board production needs large numbers of materials; thereby the planted forest and the wild wood are not suitable for manufacture and production for a long period. The invention provides the method that the eliminated branches of the apple trees and the eliminated fruit trees are shattered to hub units with various lengths; the hub units are put into a thermofiner system for thermofiner prestewing, fiber separation, sizing and solidification after filtering and water washing; and then the fiber after solidification is processed by a pavement precompression working procedure and a heat pressing working procedure; finally plate blanks which are processed after heat pressing working procedure are processed through cooling and temperature lowing, and then the beaverboards are made. The method for beaverboard production with the branches of the apple trees and the eliminated fruit trees not only solves the problems of lumber accumulation, putridness, resource waste, environment pollution and the utilization of planted forest and wild wood all caused by the apple trees elimination after a definite year planting, but also implements an approach that the top grade boards are produced by cheap materials. The boards produced in the method accord with the national standards.

Description

technical field [0001] The invention relates to the technical field of wood-based panels, in particular to a method for producing fiberboards by utilizing apple tree branches and eliminating fruit trees. Background technique [0002] In the currently known high-grade fiberboard manufacturing methods, most of them use artificial forests and natural forest thinning materials as raw materials, and require a fiber content of 50% and a fiber length of more than 1mm. Short, not suitable for long-term mass production. Facing the serious shortage of forest resources in the world at present, the human living environment urgently needs to be protected, and the protection of forest resources is a top priority. As a kind of tree with production value, fruit tree can not only beautify the environment, but also can be used as a substitute for some wood. When fruit trees have been planted for a certain number of years, new trees must be replanted, and the eliminated trees are not well ut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/04B27N1/00B27N1/02B27N3/08B27N3/10B27N3/18D21B1/16C09J11/04
Inventor 刘忠新李笠王路华林波田成伟陈永忠
Owner 陕西中兴林产有限责任公司
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