Production method of laminated veneer lumber

Abstract

The invention discloses a production method of laminated veneer lumber. The method comprises the following steps of: (1) preparing a single veneer; (2) coating and assembling; (3) intermittently prepressing; (4) interrupting an assembly plate; (5) thermally pressing; (6) trimming and sawing; (7) sanding; and (8) packaging and putting in a storehouse. The invention simplifies the original production process step, saves raw materials and equipment and reduces the power consumption. The production method can be adopted to save a lot of wood resources by avoiding longitudinally trimming both ends of a laminated veneer lumber blank, also strictly prevent single veneer seams of all layers from superposing, improve the quality of the laminated veneer lumber, save time and labor and improve the working efficiency by avoiding adjusting equipment because of the specification requirement in the production process.

Description

technical field [0001] The invention relates to a production method of wood-based panels in the wood industry, in particular to a production method of laminated veneer timber, which belongs to the technical field of wood processing. Background technique [0002] figure 1 It is a schematic diagram of the production process of traditional laminated veneer lumber. [0003] Such as figure 1 Shown: The production process of traditional laminated veneer lumber is: [0004] (1) Prepare the veneer: the production of veneer: After cooking and softening the log, place it on a rotary cutter to cut a veneer with a thickness of about 3mm. After the veneer is unscrewed, it will be cut into a veneer of a certain length by a shear , After the veneer is dried to a certain moisture content, the moisture content is generally controlled at about 6%, in order to prepare for the manufacture of laminated veneer lumber, or directly purchase veneer from the market to produce laminated veneer lumb...

AI Technical Summary

Problems solved by technology

[0015] 1. In the production process of laminated veneer lumber, the specification length of the raw veneer is often different from the specification and length of the actually required veneer laminated lumber, and the length of the veneer needs to be extended. The two ends of the board are milled with slopes, and then the two milled veneers are glued together to lengthen, and then cut to the required length, there will be surplus material during the cutting process, if the surplus material is long, it can be lengthened again. If it is too short, it will become waste. This method not only wastes raw materials, but also requires long working hours;

[0016] 2. For the lengthened veneers, often because the specifications and length of the veneers used before the length are the same, the positions of the veneer joints after the lengthening are basically the same, resulting in poor material strength at the joints and affecting the lamination of the veneers material quality;

[0017] 3. Each LVL needs to be aligned on all four sides, which not only wastes a lot of wood, but also consumes manpower and mechanical power;

[0018] 4. When splicing, it needs to be pre-spliced ​​into veneers of different lengths according to different requirements of customers. The equipment must be adjusted every time, which greatly increases the working hours

Images