Wood packaging consumes a lot of wood. Our country is Missouri's lack of wood country. In order to alleviate the increasingly conspicuous contradiction between supply and demand of timber, we must first develop large-scale artificial fast-growing and high-yield timber forests and plan to protect existing forest resources. Second, we must vigorously develop the forestry industry, fully utilize forest resources, and effectively recycle wood waste. . The recycling of wooden packaging, which consumes a lot of forest resources, is an urgent issue in China. This article focuses on the resource utilization of wood packaging materials from the perspective of green packaging.
In general, the resource utilization of wood packaging waste is the use of variable-function materials. The variable-function material utilizes the exhaustive properties of the recycled packaging material and is reprocessed for use in non-packaging applications. This cumulative performance refers to the discovered and undiscovered properties of the material pool. Wood packaging waste can be used for a variety of purposes. It can be burned for energy use, or it can be recycled using physical, chemical, or mechanical processing techniques or processes.
The resource utilization methods of wood packaging recycling mainly include recycling, mechanical chemical treatment and decomposition treatment.
1. Recycling and Reuse of Wood Packaging Recycling and reuse of wood packaging is mainly used for returning wood to the manufacturer for the use of the original product packaging. This reuse can be fixed-point long-term supply. Site-specific recovery and export bilateral agreements. Fixed-point long-term supply is suitable for manufacturers who provide products to another region or regions for a long time. The fixed-point recycling is applicable to product packaging with large circulation of goods and short circulation distance. For packaged export products, certain bilateral agreements for packaging and recycling can be established so that used wood packaging can be recycled in cross-border circulation.
Recycling and reuse of wood packaging is the first choice for the recycling of wood packaging.
2. Mechanical or chemical treatment of wood packaging Mechanical or chemical treatment methods can be used to produce wood-based panels, sawdust boards, flooring, self-lubricating materials, amino wood, and other products from discarded wood packaging.
1) Use of recycled wood packaging to produce wood-based panels Wood-based panels are good wood materials that replace solid wood and are widely used in furniture manufacturing, interior decoration, construction industry, and vehicle and ship manufacturing, involving industries such as industry, agriculture, military, and construction. The vigorous development of wood-based panels can not only adjust the industrial structure of the wood processing industry, make rational use of forest resources, but also play an irreplaceable role in promoting the cultivation and development of resources. The wooden materials used for wooden boxes and other wooden packaging containers are relatively high, their twill slope is generally less than 1/10, the diameter of the wood section is generally less than 1/3 of the width of the wood, and there is no more than 1.2 knot hole and insect eye on the plate. , dead knots and leaks, nails and no ends at both ends. Recycled wooden packaging, remove metal accessories such as iron nails and iron sheet, and after breaking, it is used to make artificial boards such as particle board, fiber board and particle board. Excellent raw materials.
Manufacture of wood particle board The wood particle board is a kind of wood-based board product that uses wood scrap as the main raw material, adds a certain amount of adhesive and is pressed at a certain temperature, and its production process mainly includes scrap material preparation, scrap materials Drying, scrap sorting, adhesive preparation, de-emulsion, slab paving, slab hot pressing, surface treatment, classification and inspection processes. Nowadays, adhesives used for making particleboard at home and abroad are mainly UF adhesives, PF and MUF. In order to improve the quality and added value of products, it is not allowed to perform secondary processing on the plates, and decorative materials such as panels, decorative plates, and plastic films are mounted on the surface to improve the decorative effect thereof.
In addition, the use of recycled wood packaging can also produce plasterboard and cement particle board and other building materials. Gypsum chipboard has good processing performance, can be sawed, milled, slotted, punched, nailed, screwed, etc., mainly used for interior decoration, such as partitions, ceilings, floors and so on. Cement particle board is an excellent building material.
Making wood fiberboards Wood fiberboards are a type of wood-based board produced using wood chips as the main raw material. Its manufacturing process mainly includes preparation, fiber separation, fiber drying, fiber separation, rubber, slab pavement, slab hot pressing, post-processing, surface processing and other processes. In recent years, the production of medium-density fiberboard in China has been developing at a very rapid pace and has a promising future.
2) Use recycled wood packaging to produce wood chips and wooden sound insulation bricks. After removing the nails, tin, and other impurities from the recovered wood packaging, it is broken into sawdust with a particle size of less than 1mm, dried, and then solidified to about 5%-15%. The adhesive blend can produce 0.5-5mm thick wood thin and wood thin panels. Wood chips board generally use PE glue, hot pressure is 80-150kg/cm square, hot pressing temperature 130-180 degrees Celsius. The mechanical properties of this wood chip board are excellent. The mechanical strength of a wood chip board can be compared with a paper laminate board which is formed by hot pressing of 5-6 layers of paper after being impregnated with PF glue.
If the above-mentioned sawdust is mixed with clay, wood-chip sound-insulating light bricks for the construction industry can be fired. During the production, the sawdust must be screened, removed of impurities such as wood blocks, stones, etc., mixed with clay in a certain proportion, brewed with water, and then evenly mixed and sent into a brick making machine. After the wet brick is dried, it is installed. Kiln firing. Wood chips are burned during the firing process, giving off heat and leaving the pores as light bricks. This kind of light brick has good sound insulation performance and has great promotion value. (To be continued)
In general, the resource utilization of wood packaging waste is the use of variable-function materials. The variable-function material utilizes the exhaustive properties of the recycled packaging material and is reprocessed for use in non-packaging applications. This cumulative performance refers to the discovered and undiscovered properties of the material pool. Wood packaging waste can be used for a variety of purposes. It can be burned for energy use, or it can be recycled using physical, chemical, or mechanical processing techniques or processes.
The resource utilization methods of wood packaging recycling mainly include recycling, mechanical chemical treatment and decomposition treatment.
1. Recycling and Reuse of Wood Packaging Recycling and reuse of wood packaging is mainly used for returning wood to the manufacturer for the use of the original product packaging. This reuse can be fixed-point long-term supply. Site-specific recovery and export bilateral agreements. Fixed-point long-term supply is suitable for manufacturers who provide products to another region or regions for a long time. The fixed-point recycling is applicable to product packaging with large circulation of goods and short circulation distance. For packaged export products, certain bilateral agreements for packaging and recycling can be established so that used wood packaging can be recycled in cross-border circulation.
Recycling and reuse of wood packaging is the first choice for the recycling of wood packaging.
2. Mechanical or chemical treatment of wood packaging Mechanical or chemical treatment methods can be used to produce wood-based panels, sawdust boards, flooring, self-lubricating materials, amino wood, and other products from discarded wood packaging.
1) Use of recycled wood packaging to produce wood-based panels Wood-based panels are good wood materials that replace solid wood and are widely used in furniture manufacturing, interior decoration, construction industry, and vehicle and ship manufacturing, involving industries such as industry, agriculture, military, and construction. The vigorous development of wood-based panels can not only adjust the industrial structure of the wood processing industry, make rational use of forest resources, but also play an irreplaceable role in promoting the cultivation and development of resources. The wooden materials used for wooden boxes and other wooden packaging containers are relatively high, their twill slope is generally less than 1/10, the diameter of the wood section is generally less than 1/3 of the width of the wood, and there is no more than 1.2 knot hole and insect eye on the plate. , dead knots and leaks, nails and no ends at both ends. Recycled wooden packaging, remove metal accessories such as iron nails and iron sheet, and after breaking, it is used to make artificial boards such as particle board, fiber board and particle board. Excellent raw materials.
Manufacture of wood particle board The wood particle board is a kind of wood-based board product that uses wood scrap as the main raw material, adds a certain amount of adhesive and is pressed at a certain temperature, and its production process mainly includes scrap material preparation, scrap materials Drying, scrap sorting, adhesive preparation, de-emulsion, slab paving, slab hot pressing, surface treatment, classification and inspection processes. Nowadays, adhesives used for making particleboard at home and abroad are mainly UF adhesives, PF and MUF. In order to improve the quality and added value of products, it is not allowed to perform secondary processing on the plates, and decorative materials such as panels, decorative plates, and plastic films are mounted on the surface to improve the decorative effect thereof.
In addition, the use of recycled wood packaging can also produce plasterboard and cement particle board and other building materials. Gypsum chipboard has good processing performance, can be sawed, milled, slotted, punched, nailed, screwed, etc., mainly used for interior decoration, such as partitions, ceilings, floors and so on. Cement particle board is an excellent building material.
Making wood fiberboards Wood fiberboards are a type of wood-based board produced using wood chips as the main raw material. Its manufacturing process mainly includes preparation, fiber separation, fiber drying, fiber separation, rubber, slab pavement, slab hot pressing, post-processing, surface processing and other processes. In recent years, the production of medium-density fiberboard in China has been developing at a very rapid pace and has a promising future.
2) Use recycled wood packaging to produce wood chips and wooden sound insulation bricks. After removing the nails, tin, and other impurities from the recovered wood packaging, it is broken into sawdust with a particle size of less than 1mm, dried, and then solidified to about 5%-15%. The adhesive blend can produce 0.5-5mm thick wood thin and wood thin panels. Wood chips board generally use PE glue, hot pressure is 80-150kg/cm square, hot pressing temperature 130-180 degrees Celsius. The mechanical properties of this wood chip board are excellent. The mechanical strength of a wood chip board can be compared with a paper laminate board which is formed by hot pressing of 5-6 layers of paper after being impregnated with PF glue.
If the above-mentioned sawdust is mixed with clay, wood-chip sound-insulating light bricks for the construction industry can be fired. During the production, the sawdust must be screened, removed of impurities such as wood blocks, stones, etc., mixed with clay in a certain proportion, brewed with water, and then evenly mixed and sent into a brick making machine. After the wet brick is dried, it is installed. Kiln firing. Wood chips are burned during the firing process, giving off heat and leaving the pores as light bricks. This kind of light brick has good sound insulation performance and has great promotion value. (To be continued)
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