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The production process of recombined wood


The production process of recombined wood

The production process of recombinant wood mainly includes steps such as log rotary cutting, log fibrosis, phenolic resin impregnation, drying before and after impregnation, and paving and molding. According to its molding process, it can be divided into: cold pressing hot curing process and hot pressing process.
The cold pressing and hot curing process includes: fast growing artificial log rotary cutting, veneer debonding, functional treatment, drying, impregnation, drying, metering, molding, cold pressing forming, thermal curing, cooling, demolding, curing, trimming, sanding, square wood or board, packaging and warehousing.
When cutting fast-growing logs, the cutting process should be designed based on the wood texture and product performance requirements. Fast-growing artificial wood has many drawbacks, such as having more lateral structures, more knots, softer materials, and high growth stress. The veneer prepared by this process has a more regular shape, non broken fibers, and uniform thickness. Most fast-growing wood veneers will exhibit varying degrees of point or linear cracks after loosening, which is more conducive to water adhesion and penetration. Alternatively, fibrosis treatment technology can also achieve the effect of increasing specific surface area and improving the quality of reconstituted wood.
The technology wood manufacturer reminds you that the drying before impregnation is usually a combination of air drying and conventional drying. In order to control the moisture content at a certain level, the veneer impregnation is more uniform. The mesh belt dryer is usually used for drying after impregnation, and the drying temperature should not be too high to avoid adhesive solidification.
The hot pressing process includes: log peeling, veneer unwinding, functional treatment, impregnation, drying, metering, assembly, hot pressing, curing, trimming, sanding, sheet or square materials, packaging, and warehousing.
The hot pressing method for assembling boards is to immerse and dry the veneer and lay it along the texture direction, which helps to maintain the uniformity of the overall density of the board and improve the utilization rate of the reconstituted wood. Although the cold pressing hot curing process has high production efficiency and low energy consumption, due to the slow heating rate, it is easy to cause the adhesive to pre cure for a long time at low temperatures, resulting in unstable product performance. However, the hot pressing process to some extent compensates for the shortcomings of the cold pressing and hot curing processes, with very fast heating speed, but also has the disadvantage of high energy consumption. The advantages of dyed wood veneer are also present.