Bamboo composite plywood structure for bottom plate of container and production method thereof as well as product

Abstract

The invention relates to a bamboo composite plywood structure for a bottom plate of a container and a production method thereof as well as a product. Bamboo chips are grinded and broomed to form bamboo beam single boards; and the bamboo beam single boards are mechanically weaved form bamboo beam single board curtains. The bamboo composite plywood structure consists of impregnated paper, the bamboo beam single board curtains and wooden single boards. A laminate is in a symmetrical structure; a veneer is double-layer impregnated paper; 4-10 layers of lengthways bamboo beam single board curtains, and 2-4 layers of transverse bamboo beam single board curtains are arranged; a layer of single wooden board is arranged between each lengthways bamboo beam single board curtain and each transverse bamboo beam single board curtain; the laminates are in tooth connection in a length direction when a long log is produced in the conditions, the conditions as follow: phenol glue with middle concentration and middle-low viscosity, and a cold-hot-cold technique are used; the pressure is 3.2-3.5 Mpa / cm<2>; and the hot pressing time is 1 min / mm when the temperature is 135-145 DEG C; the use ratio of a bamboo sheet material is more than 85%, and the used amount for labor is reduced by 40%; the internal stress problem of the bamboo material in a plywood is solved, and the problem that the gluing force is poor as the vertical and transverse bamboo beam single board curtains are directly glued is solved; and the quality is entirely improved, the volume-weight is entirely reduced, and the rigidity is improved.

Description

technical field [0001] The patent of the invention belongs to a kind of plywood for container floor, in particular to a bamboo-wood composite plywood with a new structure and its production method and product. Background technique [0002] Since the container floor must have good shock resistance, impact resistance, weather resistance and aging resistance, in addition to the appearance size, there are high requirements for the durability, static bending strength, elastic modulus and other physical properties of the plywood used for the container floor . In order to meet the requirements of product physical performance indicators, the original container bottom plate generally uses high-density hard broad-leaved wood as raw materials. Due to the long production cycle of this type of tree species, generally about 100 years, but the needs of human beings are increasing day by day, leading to the world's Resources in scope are drastically reduced. There have been many reports a...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a bamboo-wood composite plywood with a new structure suitable for the bottom plate of a container and its production method and product. Not only the utilization rate of bamboo is increased to more than 85%, the amount of labor is reduced by 40%, but also the new type of plywood can be solved well. The internal stress of the medium bamboo can well solve the problem of poor bonding force when the horizontal and vertical bamboo veneers are directly glued together, comprehensively improve the quality of the plywood, reduce the bulk density, and increase the rigidity

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