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Bending-resisting plywood and manufacturing method thereof

A manufacturing method and technology for plywood, applied in the direction of manufacturing tools, chemical instruments and methods, wood layered products, etc., can solve the problems of plywood interlayer shedding, poor bending resistance of plywood, etc., to prevent delamination and improve integration. , the effect of reducing costs

Pending Publication Date: 2017-05-31
曾世涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing twisted board has poor bending resistance, and the middle part adopts a multi-layer structure, so that the shear force generated by bending is concentrated on the middle layer. If the structural strength of the middle layer is too small, it will cause the plywood to easily fall off between layers. Case

Method used

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  • Bending-resisting plywood and manufacturing method thereof
  • Bending-resisting plywood and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] like figure 1 As shown, the present invention discloses a pressed wood chip layer and a first layer and a second layer glued on both sides of the wood chip layer; a metal mesh layer is embedded in the middle of the wood chip layer, and at least two braided mesh layers are symmetrically arranged on the metal mesh layer on both sides and embedded within the sawdust layer.

[0031] like figure 2 As shown, the surfaces on both sides of the wood chip layer are symmetrically provided with concave grooves for collecting residual glue during gluing, the concave grooves are arranged along the length direction of the wood chip layer, and polyolefin elastic fibers are arranged in the concave grooves.

[0032] The metal mesh layer adopts a mesh structure of 8-12 meshes woven by iron wires with a diameter of 0.8-1mm; the intersecting parts of the iron wires have interlocking grooves. The surface of the iron wire has non-slip concave-convex patterns.

[0033]The braided mesh laye...

Embodiment 2

[0036] In the plywood structure in embodiment 1, its sawdust layer 1 is made up of the material of following parts by weight: 30-40 parts of basswood particles with an average particle diameter of 1.5-4mm, 15-20 parts of basswood with an average particle diameter of 0.4-0.8mm Powder, 16-30 parts of rubber, and 5-8 parts of glue. When making the sawdust layer 1, generally adopt 32 parts of basswood particles, 20 parts of basswood powder, 20 parts of rubber, and 5 parts of glue; A non-quick-drying glue.

[0037] The sawdust layer 1 of this component can use basswood fibers to be scattered and distributed in the plywood, in addition, use basswood powder to fill the gaps in the sawdust layer 1, and use rubber and glue to further improve the compression resistance and bending resistance of the sawdust layer 1 , the thickness of the sawdust layer 1 can be arbitrarily designed, and it has integrity, so that the glued layer of the plywood avoids the position where the shear force is ...

Embodiment 3

[0039] The manufacturing method of this anti-bending plywood of embodiment 1, the steps are as follows:

[0040] Step 1: Select basswood particles and basswood powder and dry them so that the water content of both basswood particles and basswood powder is not higher than 4.5%; sterilize the basswood particles, basswood powder and rubber particles, and then put Basswood granules, rubber granules, glue and basswood powder are evenly mixed to form a mixture; the metal mesh layers are all placed in the pressing mold;

[0041] Step 2: evenly lay a 1.5-2mm thick mixture on the metal mesh layer; cover the mesh weaving mesh layer 12 woven from strands made of flax and nylon strands on the mixture; Cover 12 with 1-2mm mixed material; press the mixed material, metal mesh layer, and braided mesh layer 12 under a pressure of 5-8MPA and a temperature of 150-180°C for 3-5min;

[0042] Step 3: Turn over the front layer in the pressing mold, and repeat steps 2 and 3 to form a rough wood chip...

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Abstract

The invention relates to the field of special plywood applied to the vehicle bottom plate environment which is frequently vibrated and bended, in particular to bending-resisting plywood. The bending-resisting plywood comprises a pressed sawdust layer, a first plate layer and a second plate layer, wherein the first plate layer and the second plate layer are glued on the two sides of the sawdust layer. A metal mesh layer is embedded in the middle of the sawdust layer; and at least two woven mesh layers are symmetrically arranged on the two sides of the metal mesh layer and embedded in the sawdust layer. The thickness of the sawdust layer in the three layers of plates of the structure is convenient to control, the metal mesh layer and the woven mesh layers are arranged in an embedded mode, the metal mesh layer serves as a framework, and the woven mesh layers are arranged on the two sides of the metal mesh layer, so that the integrity of the sawdust layer is improved, the metal mesh layer or the woven mesh layers are prevented from delaminating, saw dust is fully utilized, and the manufacturing cost is reduced by 10%-20% compared with the same kind of plywood.

Description

technical field [0001] The invention relates to the field of special plywood used in the frequent vibration and bending environment of the vehicle floor, in particular to a bending-resistant plywood and a manufacturing method thereof. Background technique [0002] Plywood is one of the commonly used materials for furniture, and it is one of the three major boards of wood-based panels. It can also be used for aircraft, ships, trains, automobiles, buildings and packaging boxes. A group of veneers are usually assembled and glued together according to the direction of the wood grain of adjacent layers perpendicular to each other. Usually, the surface board and inner layer board are symmetrically arranged on both sides of the center layer or core. The slab made of the veneer after gluing is criss-crossed according to the direction of wood grain, and pressed under heating or non-heating conditions. The number of layers is generally an odd number, and a few have even numbers. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B32B21/02B32B21/04
CPCB27D1/04B32B21/02B32B21/04
Inventor 曾世涛
Owner 曾世涛
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