Thin shell structure reinforced type artificial board

A thin-shell structure, enhanced technology, applied in the direction of manufacturing tools, planers, planers, etc., can solve the problems of large glue consumption, high plywood manufacturing cost, hindering popularization and use, etc., to improve the utilization rate Effect

Inactive Publication Date: 2005-08-24
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the common plywood structure and manufacturing method, due to the large amount of glue consumption, the manufacturing cost of plywood remains high, which has become the biggest problem hindering its popularization and use.

Method used

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  • Thin shell structure reinforced type artificial board
  • Thin shell structure reinforced type artificial board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a. Using moso bamboo as the raw material, the bamboo green strips of moso bamboo are woven with cotton thread alone to make bamboo curtains with a thickness of 0.8~1.5mm, after drying, use toluene diisocyanate as an adhesive to sizing; fast-growing poplar wood is peeled into 0.7~1.5mm Veneer, impregnated with phenolic resin after drying;

[0025] b. Using the billet structure shown in Figure 1, one layer of bamboo green curtain with isocyanate adhesive and two layers of phenolic resin impregnated poplar veneer under the conditions of temperature of 135~150℃ and pressure of 3.5~4.5MPa Hot-pressed into high-density poplar veneer and bamboo green curtain composite sheet for use;

[0026] c. As attached figure 2 As shown, the surface layer (1) adopts birch decorative veneer impregnated with phenolic resin and plasticized at high temperature and high pressure, layer (2) is high-density poplar veneer and bamboo green curtain composite sheet, and the core layer (3) adopts 9 layers...

Embodiment 2

[0028] As attached figure 2 As shown, the surface layer (1) is made of melamine impregnated decorative paper, the layer (2) is a high-density poplar veneer and bamboo green curtain composite sheet, and the core layer (3) is made of 15mm-thick particle board, after sizing with ordinary phenolic resin adhesive The composite blank is hot-pressed into a thin-shell structure reinforced wood-based panel at a temperature of 135-145°C and a pressure of 0.8-1.2MPa.

[0029] The rest is the same as in Example 1.

[0030] Using the method and structure provided by the present invention, the main physical and mechanical properties of the thin-shell structure reinforced wood-based panel are as follows:

[0031] Density——0.6~0.75g / cm 3

[0032] Elastic modulus-6000~15000MPa

[0033] Static bending strength——50~120MPa

[0034] Impact toughness——60~100J / m 2

[0035] The purpose of the invention of effectively using bamboo green strip resources and reducing manufacturing costs is realized.

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Abstract

A thin-shell structure reinforced artificial board is composed of two composite surface layers and a sandwich layer. Its preparing process includes such steps as applying isocyanate adhesive to bamboo curtain, immersing a single wood board in phenolic resin, combining them together, hot pressing to obtain said composite surface layer, preparing sandwich layer from the quickly growing wood (poplar wood), applying adhesive, combining it with two surface layers, and hot pressing.

Description

1. Technical Field [0001] The invention belongs to the technical field of plywood manufacturing in the wood industry. 2. Background technology [0002] With the continuous development of fast-growing and high-yield forests in my country and the world, fast-growing poplar (such as black poplar, etc.) has gradually become a relatively abundant resource and has been widely adopted by the plywood manufacturing industry. Due to the characteristics of fast-growing poplar wood, plywood made purely from fast-growing poplar has relatively low physical and mechanical properties. [0003] Bamboo is a unique resource in my country and Southeast Asia. It not only has a large accumulation, and its physical and mechanical properties are significantly higher than that of wood, but it also has the advantages of fast growth and natural regeneration under normal operations. After years of research and application development by Chinese scientific and technical personnel and related enterprises, bam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27C1/06B27J1/02B27K3/34
Inventor 张晓冬朱一辛关明杰
Owner NANJING FORESTRY UNIV
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