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Method for processing lumber-core board

A processing technology, a technology for blockboards, applied in wood processing appliances, wood treatment, impregnated wood, etc., can solve the problems of warping deformation, high release of free formaldehyde, poor flatness, etc., to improve quality and reduce free formaldehyde content, the effect of reducing the aging time

Inactive Publication Date: 2008-11-19
CHANGLIN WOOD IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to invent a blockboard processing technology to solve the problem of excessive release of free formaldehyde in blockboard finished products and poor smoothness, poor flatness and warping of blockboard finished products in the prior art. Deformed technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1, the formula of the urea-formaldehyde gluing used for wood strip splicing can be (by weight): low-formaldehyde urea-formaldehyde resin 100, filler 22, formaldehyde capture agent 6, curing agent 0.7, water 200; The two sides of the rear wood strips form a core board, and the poplar core board can be glued to the requirements of (by weight) 100% low-aldehyde urea-formaldehyde resin, 22% filler, 6% formaldehyde scavenger, 0.7% curing agent, and 200% water; Paste the surface board as a three-layer board, and the requirements for glue coating on the surface board are: (weight points): 100 low-formaldehyde urea-formaldehyde resin, 22 fillers, 6 formaldehyde scavenger, 0.5 curing agent, and 200 water.

Embodiment 2

[0014] Embodiment 2, the formula of the urea-formaldehyde gluing used for wood strip splicing can be (by weight): low-formaldehyde urea-formaldehyde resin 100, filler 24, formaldehyde trapping agent 8, curing agent 0.8, water 200; Requirements can be (by weight) low aldehyde urea-formaldehyde resin 100, filler 28, formaldehyde trapping agent 7, curing agent 0.8, water 200; Agent 25, formaldehyde scavenger 7, curing agent 0.5, water 200.

Embodiment 3

[0015] Embodiment 3, the formula of the urea-formaldehyde gluing used for wood strip splicing can be (by weight): low-formaldehyde urea-formaldehyde resin 100, filler 27, formaldehyde trapping agent 8, curing agent 0.9, water 200; Requirements can be (by weight) low-formaldehyde urea-formaldehyde resin 100, filler 30, formaldehyde trapping agent 8, curing agent 0.9, water 200; Agent 28, formaldehyde scavenger 9, curing agent 0.6, water 200.

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PUM

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Abstract

The present invention relates to a production process of veneered strip-glued board. Said process includes the following steps: sawing raw material to obtain squared timber, drying, defining thickness and processing double faces, making strips by using multiblade saw, making board, coating adhesive, matching board, forced cooling, first sanding, sticking transverse single board, prepressing, hot-pressing, forced cooling, secondary sanding, sticking surface board, secondary prepressing, secondary hot-pressing, cutting edge, third sanding, sorting finished products and putting the finished products into storage. The urea-formaldehyde adhesive formula used in the adhesive-coating process is formed from (by weight portion) 100 portions of low-formaldehyde urea-formaldehyde resin, 20-35 portions of filling agent, 5-10 portions of formaldehyde trapping agent and 0.4-1.0 portion of solidifying agent.

Description

technical field [0001] The invention relates to blockboards, in particular to a processing technology for blockboards. Background technique [0002] In the existing blockboard processing technology, there are "one pressure and two sand" technology and "two pressure and two sand" technology. The "one press and two sand" process needs to go through the following process. This process mainly includes: log drying, core strips, panel machine gluing, stacking, sanding, planing, blank assembly and board (horizontal veneer, Table board), pre-heating, pre-heating, edge trimming, sanding, inspection and packaging process. The "two-press and two-sand" process needs to go through the following process, which mainly includes: log drying, core making, panel machine gluing, pre-pressing, hot pressing, trimming, sanding, gluing, assembly Blank matching, pre-heating, hot pressing, trimming, sanding, inspection and packaging process. The defects in the above two blockboard processing techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M1/08B27K3/12B27K3/36B27K5/00
Inventor 周绍平王厚立张建宏
Owner CHANGLIN WOOD IND
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