Production method of modified wood, bamboo glued mould

A manufacturing method and template technology, which are applied in the production of bamboo glued templates and in the field of modified wood, can solve the problems of the quality of scrapped sheets, the multiple turnover of deformed scrap sheets, and the unqualified use, so as to save the veneer lamination process. Effect

Inactive Publication Date: 2009-06-10
李茂林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process of the above two kinds of plywood, the adhesive is coated or dipped on the surface of the sheet material, that is, the surface of the base material of the wood veneer or bamboo curtain or bamboo mat. The chemical and physical forces glued the slabs into a whole board, which did not change the wet swelling properties of wood and bamboo. Therefore, under the condition of wet concrete operation, the water in the concrete is absorbed by the board and the sheet. As the wood bamboo or wood gradually absorbs, the moisture content of the board increases, the static bending strength an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: Modified wood glued formwork with specifications of 2440mm×1220mm×8mm

[0017] (1) Wood wool processing: Use 12mm-20mm small-diameter poplar as raw material, cut it into 2460mm long wood sections with a saw, after removing the bark, cut it into a wood veneer with a thickness of 2mm on a card-free cutting machine, use The wire cutter continuously cuts the wood veneer into long wood wires with a width of 3mm;

[0018] (2) Material modification treatment: add water-soluble phenolic resin to adjust the glue solution with a solid content of 25%, place the wood wool in a vacuum pressurized tank, and inject the glue solution, turn on the vacuum pump, pressurize to 0.9mpa, Hold the pressure for 15 minutes to modify the material with a resin impregnation amount of 115%;

[0019] (3) Low-temperature drying treatment: use a mesh belt dryer to continuously dry the wood wool impregnated with phenolic resin. The process parameters are: temperature 70°C-80°C, wind speed...

Embodiment 2

[0024] Embodiment 2: Specification is the modified bamboo glued formwork of 2440mm * 1220mm * 12mm

[0025] (1) Bamboo silk processing: use small-diameter miscellaneous bamboos below 8mm in diameter as raw materials, cut them into 2460mm long bamboo sections with a saw, and use a bamboo wire drawing machine to pull them into bamboo silk with a length of 2460mm, a width of 3mm, and a thickness of 2mm;

[0026](2) Material modification treatment: add water-soluble phenolic resin to adjust the glue solution with a solid content of 30%, place the bamboo silk in a vacuum pressurized tank, inject the glue solution, turn on the vacuum pump, pressurize to 0.8mpa, Hold the pressure for 15 minutes to modify the material with a resin impregnation amount of 112%;

[0027] (3) Low-temperature drying treatment: use a mesh belt dryer to continuously dry the bamboo filaments impregnated with phenolic resin. The process parameters are: temperature 70°C-80°C, wind speed 3m / s, mesh belt travel s...

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PUM

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Abstract

The invention discloses a method for manufacturing modified plywood formwork of wood or bamboo wood. The method is implemented by the following steps: small-diameter cotton-wood, China fir or small-diameter mixed bamboo instead of large-diameter high-quality wood and large-diameter moso bamboo are taken as raw materials to process into wood wool and bamboo filaments; soluble phenolic resin with a solid content of 20 to 30 percent is used as a modifier of the material; the phenolic resin is impregnated in the fiber cell lumens of the material by a pressure impregnation method to change the moisture expansion property of the material; the wood wool or the bamboo filaments containing less than or equal to 15 percent of water is used as assembly materials; modified and dried wood wool or bamboo filaments and paper impregnated with phenolic resin are used as assembly materials for plywood, and an assembly structure is a three-layer composite structure; main parameters of thermo-compression and bonding include: a unit pressure of 40 to 50 kg/cm<2>, a bonding temperature of 150 +/-10 DEG C, thermo-compression time of one minute for each millimeter of the thickness of board; the board is unloaded when cooled to less than or equal to 50 DEG C after thermo-compression and bonding and is subjected to edge cutting to be processed to the plywood; and after the worn surface finish of the plywood is restored through recoating by a secondary veneering method, the plywood is reused.

Description

Technical field: [0001] The invention relates to a method for making artificial boards, in particular to a method for making modified wood and bamboo glued templates. Background technique: [0002] At present, wood-based panels are mainly used as templates in the construction industry, multi-layer plywood made of wood and multi-layer bamboo plywood made of bamboo. The manufacturing method of these two types of plywood is to use large-diameter high-quality wood and large-diameter moso bamboo as raw materials, and process them into sheet-like wood veneers or bamboo curtains and bamboo mats of a certain size, and then use them as the base material of the board. , using phenolic resin as an adhesive to coat or dip in the surface of the sheet base material, and then form the blank according to the method of vertical, horizontal and vertical intersection, and then process it into a plywood by pre-pressing and hot-pressing. The surface of the two kinds of plywood can use phenolic ...

Claims

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Application Information

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IPC IPC(8): B27D1/04B27D1/06B27D1/08B27D5/00B27L11/04B27K3/34B27K5/04B27N3/04B32B21/06
Inventor 李茂林
Owner 李茂林
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