Low-density veneer oriented strand board

Abstract

The invention relates to a low-density veneer oriented strand board. The low-density veneer oriented strand board comprises a core layer, a sub-surface layer and a surface layer; the core layer is made of slightly larger wood shavings (the wood shaving length is between 50 mm and 80 mm) produced by small-diameter wood and branch wood of poplar through a long wood slicing machine and a two-sectionslicing machine; the sub-surface layer is made of large wood shavings (the wood shaving length is between 80 mm and 120 mm) produced through the long wood slicing machine and the two-section slicing machine; and the surface layer is made of leftover materials, saw dust and wood shavings which are produced in the production process of plywoods, laminated wood boards and strand boards. After the rawmaterials are subjected to drying, screening, gluing, paving, prepressing, edging, steam injection and continuous hot pressing, the low-density veneer oriented strand board is prepared. According tothe low-density veneer oriented strand board, the density is smaller than or equal to 520 kg / m<3>, the static bending strength in the parallel direction can reach 22-38 MPa, and the elasticity moduluscan reach 3,200-4,500 MPa. The low-density veneer oriented strand board is not only limited to the using range of common OSBs, and can be widely applied to directing veneering of furniture, indoor decoration, packaging and floor base materials.

Description

technical field [0001] The invention relates to a low-density veneerable oriented particle board, which is especially suitable for the veneerable oriented particle board which requires relatively light product density and relatively high smoothness and fineness of the surface, and belongs to the technical field of particle boards. Background technique [0002] The "Facing Oriented Strand Board" group standard led by China Timber and Wood Products Circulation Association was officially released a few days ago and will be officially implemented on February 1, 2018. The formulation and release of the group standard "Facing Oriented Strand Board" can fill the gap in China's production and manufacturing standards for veneering oriented strand board, and at the same time standardize the physical and chemical performance indicators of this new type of board, improve the awareness of this product, and improve the quality of the product. Performance, protection of corporate interests...

AI Technical Summary

Problems solved by technology

Due to the long production cycle and high price of pine wood, which is not a fast-growing wood encouraged by the state, the production cost of pine wood is relatively high.

In addition, the current production enterprises generally use the screen ring grinder to produce the surface material of the facing oriented strand board, and the pavement adopts a mechanical or mechanical airflow paving machine. The surface fine material of the product produced is similar to the surface of the ordinary particleboard. There is a large gap between the surface and the surface of the fiberboard

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