Boxboard based on high-density oriented strand board and processing method thereof

Abstract

The invention discloses a high-density oriented strand board with the density more than or equal to 0.8g / cm<3>. The high-density oriented strand board is obtained by stacking and hot-pressing; the temperature for stacking and hot-pressing is higher than or equal to 120 DEG C but lower than or equal to 160 DEG C; the ratio of the time for stacking and hot-pressing to the thickness of the high-density oriented strand board is within the scope of 80-120; and the ratio is counted by s / mm. The high-density oriented strand board disclosed by the invention can select wider pressure adjusting scope; the limitation to the upper pressure limit in continuous hot-pressing is avoided; the quantity of water from adhesives and wood shavings converted into gas is reduced; the detention of the gas between the wood shavings is reduced; the generation of the board explosion phenomenon is avoided; and meanwhile, the hot-pressing time is prolonged, the density of the processed oriented strand board is increased and the mechanical property is increased. The invention further discloses a processing method for the high-density oriented strand board, a boxboard based on the high-density oriented strand board and a processing method thereof.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a high-density oriented particle board and a preparation method thereof. In addition, the present invention also relates to a box board based on high-density oriented strand board and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of architectural decoration, furniture industry, packing boxes, cargo pallets, storage boxes, and container industries, the demand for wood has increased sharply, and the gap in wood supply has become more and more prominent. The wood-based panel industry is in this situation Obtained considerable development, the use of wood-based panels is conducive to alleviating the contradiction between supply and demand of wood, is an important way to save wood resources. [0003] Wood-based panels refer to wood or other non-wood plants as raw materials, which are processed into component materials ...

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Problems solved by technology

The oriented strand board produced by the above method increases the static bending strength and elastic modulus of the oriented strand board by lengthening the length of the oriented strand board, so that it has a higher load-bearing capacity, but the length of the lengthened shavings is limited by the mechanical processing equipment on the one hand. On the other hand, too long shavings will also affect the quality of the pavement, making the pavement uneven, which in turn affects the strength of the particleboard, making it difficult to meet the requirements of the container floor

[0006] For this reason, the prior art also discloses a kind of oriented structure board for container floor, the oriented structure board is made of wood peeling, flaking, drying, screening, sizing, three layers and above vertically and horizontally alternately oriented paving, spray steaming, It is formed by high-tonnage continuous hot pressing and balancing internal stress. The oriented structural panel made by this method has high density and good mechanical properties, and can be used alone as a container floor. During the processing and production of particleboard, on the one hand, continuous hot pressing refers to the hot pressing carried out during the continuous movement of oriented strand board, and the upper limit of the pressure (ie tonnage) should ensure that it will not affect the movement of oriented strand board, so the pressure is not easy to be too large ; On the other hand, the oriented strand board needs to complete the hot pressing process in the process of movement, which is easy to cause the explosion phenomenon, and the qualified rate of product processing is low, resulting in a large waste of resources

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