Composite plywood

Abstract

The invention discloses composite plywood. The composite plywood comprises a board body, wherein the board body comprises a surface board part, a core board part, a bottom board part and anti-flaming gluing layers arranged between the board parts, wherein both the surface board part and the bottom board part are hot-pressed high-density veneers, the periphery of the board body is wrapped in a pest preventing layer, and the periphery of the pest prevention layer is coated with a protective layer. The composite plywood has the advantages of being simple in structure, easy to manufacture, resistant to water, fire, pest and corrosion, capable of isolating sounds, high in pressure bearing capacity and impact resistance, high in nail holding capacity, not prone to scratch, free of formaldehyde release, environmentally friendly, healthy, long in service life and the like and can be widely applied to various fields and occasions.

Description

technical field [0001] The invention relates to the technical field of wood-based panels, in particular to a composite plywood. Background technique [0002] Plywood, also known as plywood and thin-core board, is a three-layer or multi-layer board-like material that is made of wood segments that are peeled into veneers or sliced ​​into thin wood, and then glued with adhesives. board, and make the fiber directions of adjacent layers of veneers perpendicular to each other and glue them together. Plywood is a kind of wood-based panels. Because of its small difference in physical and mechanical properties in the vertical and horizontal directions, high wood utilization rate, light weight, and low price, it is widely used in furniture manufacturing, aircraft, ships, trains, automobiles, and construction. and packing boxes and other fields. The current plywood is generally bonded together by three layers of face plate, board core and bottom board, and most of them have the follo...

AI Technical Summary

Problems solved by technology

The current plywood is generally bonded together by three layers of face plate, board core and bottom board, and most of them have the following disadvantages: not waterproof, not fireproof, easy to be damp and loose after being damp, easy to rot and moth-eaten for a long time, and bear pressure And poor impact resistance, easy to scratch, no sound insulation, no radiation resistance, etc.

The invention is equipped with an insect-proof layer and an anti-corrosion layer. Although it can prevent the plywood from rotting and moth-eaten, it has the following defects: First, the invention does not set up a relevant fire-proof layer or add a flame retardant, and the plywood does not have fire-proof properties, which is easy Burning, the scope of application is limited; second, the invention is not provided with relevant waterproof layers or other protective measures, and the plywood is easy to swell and loosen when exposed to water or moisture, which affects the appearance and use effect, and reduces the service life of the plywood; in addition, the Although the invention is made of three layers of veneers glued and bonded, it has certain strength and bending resistance, but it may crack or even break if it is subjected to greater impact and pressure

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