Method for manufacturing bamboo strengthened poplar laminated veneer lumber

Abstract

The invention belongs to the field of processing woods, and particularly relates to a method for manufacturing a bamboo strengthened poplar laminated veneer lumber. The manufacturing method comprises the following steps of: cutting the poplar veneer, scarfing the veneer, dipping the scarfed veneer, dipping a bamboo layer, drying, hot pressing, decorating a laminated timber and the like. The method is reasonable in design and simple in technology; the poplar with small diameter class is used as raw material for producing the laminated veneer lumber; the bamboo material with the same direction with fiber and high strength is introduced; the surface veneer is subjected to aqueous SiO2 (silicon dioxide) sol impregnation strengthened treatment, so that the shortcomings of the quality and the processing of the poplar are conquered, the existing resource is effectively used; the small woods and inferior woods can be better used; the outturn percentage is high; and the economic effect is obvious. The obtained laminated timber is high in strength, excellent in stability, free of cracking and deforming, high-temperature resistant and excellent in flame retardation. The obtained laminated timber can be used for indoor floorboard and decorating and refurbishing materials; the formaldehyde emission is far less than the home and aboard emission standard; and environment-friendly requirements can be achieved.

Description

technical field [0001] The invention belongs to the field of wood processing, and in particular relates to a method for manufacturing bamboo-reinforced poplar veneer laminated lumber. Background technique [0002] With the great changes in the world's forest resource structure, high-quality timber resources are becoming more and more scarce, while people's demand for wood products and ecological environment requirements are constantly increasing, resulting in increasingly obvious contradictions between supply and demand of wood materials. my country is a country lacking forests and less forests, and there is a large gap in wood. With the reduction of large-diameter wood and the improvement of wood performance requirements, the natural characteristics of original wood are difficult to meet the demand. A large number of logs and plywood are imported from abroad every year. Spend a lot of foreign exchange. [0003] Laminated veneer lumber (LVL) is a new type of man-made lumber ...

AI Technical Summary

Problems solved by technology

However, poplar wood in plantation forests has low density, soft material, light color, high moisture content and uneven distribution, and often has material defects such as irregular dry shape, many knots, black hearts, and insect eyes, which directly affect the quality of poplar trees in plantation forests. and price

In recent years, the production of laminated veneer lumber with small-diameter poplar logs has been widely promoted, which can make soft small-diameter logs into high-strength boards instead of solid wood products. However, many problems still exist, especially the difference in strength High resistance, unable to meet high quality requirements, poor flame retardancy, etc.

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