Wood-based cellulose fibers are interwoven and formed using their inherent adhesive properties. Adhesives and/or additives can be applied during the manufacturing process. The utility model has the advantages of uniform material, small horizontal and vertical strength difference, and no easy cracking, etc., and is widely used. The development of fiberboard production is an effective way for the comprehensive utilization of timber resources.
According to the slab forming process, it can be divided into wet fiberboard, dry fiberboard, and directional fiberboard. According to the different methods of post-processing, it can be divided into ordinary fiberboard and oil fiberboard. However, it is usually divided into two categories according to product density: non-compression and compression. Compressed products are soft fiberboards with a density of less than 0.4 g/cm3, light weight, high voidage, good thermal insulation and sound absorption, and are used as covering materials in public buildings; More lightweight fiberboard, with adsorption properties, used to clean the air; compression products: 1 medium density fiberboard, also known as semi-hard fiberboard. Density 0.4-0.8 g/cm3, uniform structure, moderate density and strength, good reworkability, wide range of product thickness, wide application. 2 hard fiberboard. Density is more than 0.8g/cm3, product thickness range is relatively small, in the 3 ~ 8mm, high strength, used in construction, ships and cars and other manufacturing industries.
Fibreboard production process is divided into wet method, dry method and semi-dry method. The basic process flow is fiber separation → slurry processing → slab forming → hot pressing → post-processing. The wet process is based on the use of water as a carrier for fiber transport. It is made of a certain strength by utilizing the frictional force generated by the interweaving of fibers, the binding force generated between the molecules on the surface of the fiber, and the binding force generated by the fiber containing material, etc. Fiberboard. The dry production process uses air as the fiber transport carrier. The fiber preparation is a one-time separation method. Generally without fine grinding, the adhesive must be applied. Before the slab is formed, the fiber must be dried. After the hot pressing, the plate is usually not heat-treated. The same process and wet method. The semi-dry process is also formed by air flow. The fiber maintains a high moisture content without drying, and no or little rubber is used. Therefore, the semi-dry method overcomes the main disadvantages of the dry and wet methods while maintaining its partial advantages, but the wet fiber Easy to form, difficult to form, poor slab density uniformity, product quality is difficult to guarantee.
According to the slab forming process, it can be divided into wet fiberboard, dry fiberboard, and directional fiberboard. According to the different methods of post-processing, it can be divided into ordinary fiberboard and oil fiberboard. However, it is usually divided into two categories according to product density: non-compression and compression. Compressed products are soft fiberboards with a density of less than 0.4 g/cm3, light weight, high voidage, good thermal insulation and sound absorption, and are used as covering materials in public buildings; More lightweight fiberboard, with adsorption properties, used to clean the air; compression products: 1 medium density fiberboard, also known as semi-hard fiberboard. Density 0.4-0.8 g/cm3, uniform structure, moderate density and strength, good reworkability, wide range of product thickness, wide application. 2 hard fiberboard. Density is more than 0.8g/cm3, product thickness range is relatively small, in the 3 ~ 8mm, high strength, used in construction, ships and cars and other manufacturing industries.
Fibreboard production process is divided into wet method, dry method and semi-dry method. The basic process flow is fiber separation → slurry processing → slab forming → hot pressing → post-processing. The wet process is based on the use of water as a carrier for fiber transport. It is made of a certain strength by utilizing the frictional force generated by the interweaving of fibers, the binding force generated between the molecules on the surface of the fiber, and the binding force generated by the fiber containing material, etc. Fiberboard. The dry production process uses air as the fiber transport carrier. The fiber preparation is a one-time separation method. Generally without fine grinding, the adhesive must be applied. Before the slab is formed, the fiber must be dried. After the hot pressing, the plate is usually not heat-treated. The same process and wet method. The semi-dry process is also formed by air flow. The fiber maintains a high moisture content without drying, and no or little rubber is used. Therefore, the semi-dry method overcomes the main disadvantages of the dry and wet methods while maintaining its partial advantages, but the wet fiber Easy to form, difficult to form, poor slab density uniformity, product quality is difficult to guarantee.