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Production technology based on plywood MDI

A production process and plywood technology, applied in the direction of glue guns, manufacturing tools, wood processing equipment, etc., can solve the problems of high requirements on the workplace, easy pollution of the environment, low processing efficiency, etc., to enhance water resistance, reduce formaldehyde release, The effect of improving productivity

Inactive Publication Date: 2018-12-25
尉氏县众林木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a production process based on plywood MDI, in order to solve the problem of common plywood production, the board needs to be dried, and the glue is sprayed with trialdehyde resin with a long sticking time, and finally the finished board is obtained by pressing It needs to be placed for a period of time to increase the viscosity of the glue before it can be formed into a product. The processing efficiency is low, the requirements for the work site are high, and the problem of easy pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] An embodiment of the present invention is a production process based on plywood MDI, including the following steps: S1 raw materials are selected from at least one of poplar, pine, camphor, eucalyptus, and eucalyptus, and the raw materials are prepared by material preparation means Coil and veneer; S2 will spray glue on the coil in layers, the above-mentioned layered glue is selected as MDI glue; S3 will place the coil on the coil, and the coil will be placed layer by layer to form a multilayer board; S4 sprays the veneer with glue, the above-mentioned veneer is sprayed with MDI glue; S5 puts the veneer on the veneer, and the above-mentioned veneer is placed as a veneer and laid on a multi-layer board to form a whole board; S6 is the whole board The embryo is sawed to form a single board to be processed; S7 pre-presses the board to be processed so that the multilayer board is in close contact with the veneer, and then hot-pressed to make a finished board; S8 the above-men...

Embodiment 2

[0016] An embodiment of the present invention is a production process based on plywood MDI, including the following steps: S1 raw materials are selected from at least one of poplar, pine, camphor, eucalyptus, and eucalyptus, and the raw materials are prepared by material preparation means For coils and veneers, the log preparation method is log rotary cutting to make thin slices. The above-mentioned thin slices are sorted, dried and then spliced ​​into coils. S2 performs layered spraying on the rolled plates. The layered spraying is selected as For MDI glue, a tackifier is added during the layered glue spraying process; S3 will place the coil on a coil, and the coil will be placed layer by layer to form a multi-layer board; S4 will apply the veneer to the veneer glue, the above Veneer spray glue selects MDI glue; S5 places the veneers on a single board, and the above-mentioned veneers are placed as a veneer laid on a multi-layer board to form a whole board; S6 the whole board is...

Embodiment 3

[0018] An embodiment of the present invention is a production process based on plywood MDI, including the following steps: S1 raw materials are selected from at least one of poplar, pine, camphor, eucalyptus, and eucalyptus, and the raw materials are prepared by material preparation means Coil and veneer; S2 will spray the coil in layers, the above-mentioned layered spray is selected as MDI glue, and the tackifier is added during the layered spraying process, and the layered spray does not exceed 3 layers. The fiber direction of the board and the veneer are perpendicular to each other. The glue spraying position of the glue spraying of the coil is the upper part of the coil, and the glue spraying position of the glue spraying of the veneer is the lower surface of the veneer. The viscosity of the glue spraying of the coil is about 100 ~300mPa.s, the functionality of the above MDI glue is 2.9~3.1, and natural vegetable glue is added to the MDI glue; S3 rolls the coil and places it...

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PUM

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Abstract

The invention discloses a production technology based on plywood MDI. A product is prepared by the steps of plate rolling, layered glue spraying, rolled plate placing, single plate glue spraying, single plate placing, sawing, pre-pressing, hot pressing, airing, cutting and final trimming; and the invention is expected to solve the problems that the processing efficiency is low, requirements for work sites are high, and the environment is easily polluted because the usual plywood production needs to dry a sheet material, trialdehyde resin with relatively long adhesion time is adopted for sizing, and finally a product can be formed after a finished plate obtained by pressing is placed for a period of time for improving the viscosity of glue.

Description

Technical field [0001] The invention relates to plate production, in particular to a production process based on plywood MDI. Background technique [0002] MDI is a translucent liquid with a relative density of 1.22-1.25g / cubic centimeter. It is a polymer compound with active reaction characteristics. Its molecules are networked and have good bonding strength. The MDI glue itself has no Add formaldehyde, the bonding mechanism is chemical bonding, with stable performance and low pollution emission; [0003] Plywood is a commonly used material for furniture and belongs to man-made panels. It is usually glued by coating trialdehyde resin. The glued veneer is a slab formed by crisscrossing the wood grain direction and pressed under heating or unheated conditions. In the production of plywood, logs are made into veneers and dried to make the moisture content of the wood less than 5%, and glue is sprayed on the surface of the veneers. By manually placing multiple veneers / veneers of equ...

Claims

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Application Information

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IPC IPC(8): B27G11/00
CPCB27G11/005
Inventor 裴远岭王振亚
Owner 尉氏县众林木业有限公司
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