Development of Jiangxi solid wood composite and bamboo-wood composite flooring production by artificial timber forest (3
2024-04-30 07:06:47
4. 1 Status of artificial timber forest resources in our province
According to the results of the fourth review of the continuous inventory of forest resources in Jiangxi Province in 1996, the province's timber forest area was 5,902,200 hm2, with an accumulation of 2,083,490 m3, of which 41.62 million hm2 of natural forest, accumulation 1 56 46. 16,000 m3, plantation area of ​​1 785,900 hm2, accumulation of 4,837,300,000 m3.
4. 2 Status of bamboo forest resources in our province
The bamboo forest resources in our province are abundant. According to the data of the fourth review of the continuous inspection of forest resources in Jiangxi Province in 1996, the total area of ​​bamboo forest in the province was 62.37 million hm2, accounting for 7. 05% of the forest land area. Among them, the natural bamboo forest area is 60.81 million hm2, and the artificial bamboo forest area is 192,200 hm2. The total number of Phyllostachys pubescens was 10,556,600, of which 881.53 million were bamboo, and 30.88 million were scattered bamboo and bamboo.
4. 3 Active development and utilization of artificial timber resources and bamboo resources As can be seen from the above table, the artificial timber forests in our province are mainly masson pine and Chinese fir, and the accumulated amount accounts for 97.2% of the accumulation of artificial timber forests, reaching 470.42 million m3. Other hard wide and soft wide only account for a small part. The use of masson pine and fir as the solid wood flooring market is unpopular, while the masson pine and fir can be used as the bottom and core layers of the composite wood floor. In addition, there are other soft and wide composite wood flooring. As for the surface of the composite wood floor, after all, the amount of use is small, in addition to the use of eucalyptus and other hard wide solutions, it can also import a part of high-grade hardwood. It can be seen from the area and accumulation of each age group that in 1996, the near-mature forest of Pinus massoniana in artificial timber forest reached 2 55.44 million m3, and the total stock of near-ripening, medium-maturing and over-ripe forests of cedar trees 1 0 2 4.72 million m3, these masson pines and cedar trees can be used now or in the near future.
There are abundant bamboo forest resources in our province, and the number of forest bamboos is 881.53 million. Therefore, it is no problem to use the artificial timber forest and bamboo resources of our province to solve the raw materials of wood-based composite flooring and bamboo-wood composite flooring in our province.
There is a big gap between the production of solid wood composite flooring in our province and other provinces. This also shows that there is still a lot of work to be done in the development and utilization of artificial timber forests, especially the use of small-cut timbers for thinning, for some fast-growing This is especially true for the use of tree species such as poplars, which can be used to develop parquet.
The use of bamboo in our province - for bamboo glue board, bamboo plywood, bamboo flooring, etc., has a good foundation, and has achieved gratifying results, but the development of bamboo and wood composite materials is not enough, only a very small number of enterprises Produce a small amount of bamboo and wood laminate flooring. As mentioned before, the province has rich resources of Chinese fir, and the development and production of bamboo cedar composite flooring can find a way out for the development and utilization of bamboo and fir in our province. In China, the bamboo cedar composite flooring is in the stage of research and development and utilization. Some units and enterprises in other provinces have achieved certain results. The county of Tonggu and other counties in our province plan to build a bamboo slab composite floor production line. In short, the province's artificial timber forest and bamboo resources are abundant. Active development and utilization of these resources to develop the solid wood composite flooring and bamboo-wood composite flooring of our province is not only conducive to the development of the wood and bamboo processing industry in our province, but also to meet the needs of the market. It is conducive to the development of the mountainous economy and speeding up the pace of mountain farmers to get rid of poverty. It is also conducive to the implementation of natural forest protection projects in our province and forestry production and development in our province.
4. 4 Problems in the production of solid wood and bamboo-wood composite flooring with artificial timber forest
The use of artificial timber forests to produce solid wood composites and bamboo-wood composite flooring is prone to product deformation, affecting product quality, and should be given sufficient attention. The main reasons for affecting product quality are: 1 three-layer composite wood flooring is made of solid wood surface panels, core laminates and The bottom plates are vertically bonded to each other, and thus are deformed due to problems of material asymmetry and structural asymmetry. 2 The surface layer and the core layer are all spliced, and the deformation is caused by not being whole. 3 Bamboo-wood composite flooring Because the table and the bottom layer are made up of two different materials, except for the deformation of the surface of the surface of the table, the material is different, and the physical properties such as water content are different. The physicochemical properties of the 4 parts of wood, such as poplar core layer, due to the different p H values ​​of the sapwood and core layer of poplar, affect the glue and bonding strength. Because the surface layer and the core layer are made of different woods, the two types of wood are different in drying basis, which affects the moisture content of the board and the like, and the product is deformed. 5 defects in the material itself and processing accuracy problems, in order to ensure product quality, some experts suggest that the surface layer of wood is 2. 5mm, the thickness of the core layer is 10 mm, the bottom layer of the veneer is 2.5 mm, considering the compression margin, so that The total thickness is up to 15 mm to overcome product distortion. Some enterprises use a knife to score a knife edge on the bottom-cut veneer or use an indentation to overcome the product deformation problem.
In short, before mass production, experiments must be carried out to find out the physical and chemical properties of different types of materials, and use reasonable production techniques to ensure and improve product quality. Only the quality of the product is guaranteed, and the development and utilization of the artificial timber forest has a way out.
According to the results of the fourth review of the continuous inventory of forest resources in Jiangxi Province in 1996, the province's timber forest area was 5,902,200 hm2, with an accumulation of 2,083,490 m3, of which 41.62 million hm2 of natural forest, accumulation 1 56 46. 16,000 m3, plantation area of ​​1 785,900 hm2, accumulation of 4,837,300,000 m3.
4. 2 Status of bamboo forest resources in our province
The bamboo forest resources in our province are abundant. According to the data of the fourth review of the continuous inspection of forest resources in Jiangxi Province in 1996, the total area of ​​bamboo forest in the province was 62.37 million hm2, accounting for 7. 05% of the forest land area. Among them, the natural bamboo forest area is 60.81 million hm2, and the artificial bamboo forest area is 192,200 hm2. The total number of Phyllostachys pubescens was 10,556,600, of which 881.53 million were bamboo, and 30.88 million were scattered bamboo and bamboo.
4. 3 Active development and utilization of artificial timber resources and bamboo resources As can be seen from the above table, the artificial timber forests in our province are mainly masson pine and Chinese fir, and the accumulated amount accounts for 97.2% of the accumulation of artificial timber forests, reaching 470.42 million m3. Other hard wide and soft wide only account for a small part. The use of masson pine and fir as the solid wood flooring market is unpopular, while the masson pine and fir can be used as the bottom and core layers of the composite wood floor. In addition, there are other soft and wide composite wood flooring. As for the surface of the composite wood floor, after all, the amount of use is small, in addition to the use of eucalyptus and other hard wide solutions, it can also import a part of high-grade hardwood. It can be seen from the area and accumulation of each age group that in 1996, the near-mature forest of Pinus massoniana in artificial timber forest reached 2 55.44 million m3, and the total stock of near-ripening, medium-maturing and over-ripe forests of cedar trees 1 0 2 4.72 million m3, these masson pines and cedar trees can be used now or in the near future.
There are abundant bamboo forest resources in our province, and the number of forest bamboos is 881.53 million. Therefore, it is no problem to use the artificial timber forest and bamboo resources of our province to solve the raw materials of wood-based composite flooring and bamboo-wood composite flooring in our province.
There is a big gap between the production of solid wood composite flooring in our province and other provinces. This also shows that there is still a lot of work to be done in the development and utilization of artificial timber forests, especially the use of small-cut timbers for thinning, for some fast-growing This is especially true for the use of tree species such as poplars, which can be used to develop parquet.
The use of bamboo in our province - for bamboo glue board, bamboo plywood, bamboo flooring, etc., has a good foundation, and has achieved gratifying results, but the development of bamboo and wood composite materials is not enough, only a very small number of enterprises Produce a small amount of bamboo and wood laminate flooring. As mentioned before, the province has rich resources of Chinese fir, and the development and production of bamboo cedar composite flooring can find a way out for the development and utilization of bamboo and fir in our province. In China, the bamboo cedar composite flooring is in the stage of research and development and utilization. Some units and enterprises in other provinces have achieved certain results. The county of Tonggu and other counties in our province plan to build a bamboo slab composite floor production line. In short, the province's artificial timber forest and bamboo resources are abundant. Active development and utilization of these resources to develop the solid wood composite flooring and bamboo-wood composite flooring of our province is not only conducive to the development of the wood and bamboo processing industry in our province, but also to meet the needs of the market. It is conducive to the development of the mountainous economy and speeding up the pace of mountain farmers to get rid of poverty. It is also conducive to the implementation of natural forest protection projects in our province and forestry production and development in our province.
4. 4 Problems in the production of solid wood and bamboo-wood composite flooring with artificial timber forest
The use of artificial timber forests to produce solid wood composites and bamboo-wood composite flooring is prone to product deformation, affecting product quality, and should be given sufficient attention. The main reasons for affecting product quality are: 1 three-layer composite wood flooring is made of solid wood surface panels, core laminates and The bottom plates are vertically bonded to each other, and thus are deformed due to problems of material asymmetry and structural asymmetry. 2 The surface layer and the core layer are all spliced, and the deformation is caused by not being whole. 3 Bamboo-wood composite flooring Because the table and the bottom layer are made up of two different materials, except for the deformation of the surface of the surface of the table, the material is different, and the physical properties such as water content are different. The physicochemical properties of the 4 parts of wood, such as poplar core layer, due to the different p H values ​​of the sapwood and core layer of poplar, affect the glue and bonding strength. Because the surface layer and the core layer are made of different woods, the two types of wood are different in drying basis, which affects the moisture content of the board and the like, and the product is deformed. 5 defects in the material itself and processing accuracy problems, in order to ensure product quality, some experts suggest that the surface layer of wood is 2. 5mm, the thickness of the core layer is 10 mm, the bottom layer of the veneer is 2.5 mm, considering the compression margin, so that The total thickness is up to 15 mm to overcome product distortion. Some enterprises use a knife to score a knife edge on the bottom-cut veneer or use an indentation to overcome the product deformation problem.
In short, before mass production, experiments must be carried out to find out the physical and chemical properties of different types of materials, and use reasonable production techniques to ensure and improve product quality. Only the quality of the product is guaranteed, and the development and utilization of the artificial timber forest has a way out.
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