Editor's note: Since the beginning of this year, the price of plastic raw materials has risen sharply, which has caused the plastic recycling industry to thrive. Plastic regeneration can not only save resources, ease the contradiction between the supply and demand of plastic materials, but also make an important contribution to environmental protection. The plastic recycling industry has broad prospects in China. Recycling is the only way for the sustainable development of the plastics industry. However, some problems derived from the heat of plastics regeneration cannot but arouse people's concerns. This article gives a detailed introduction and analysis of the current situation of plastics recycling applications at home and abroad.
Recycled plastics are favored
As a measure to save energy and protect the environment, the recycling of used plastics is receiving increasing attention. In particular, the work of developed countries started early and has already received significant benefits. As we all know, plastic raw materials are chemical products that are extracted from natural petroleum. Oil is the lifeblood of modern industry, and it is a non-renewable natural resource. Asian countries generally face the oil energy crisis. China is a net oil importer, and oil is related to the country. Energy security. According to statistics from related departments, the plastic waste generated in a medium-sized city each year can satisfy the raw material needs of 20 medium and small-sized plastic enterprises. Therefore, recycled plastic is the regeneration of oil. The use of waste plastics for melt granulation can ease the contradiction between the supply and demand of plastic raw materials, and can also greatly save the foreign exchange of the country’s imported crude oil. In addition, due to the fact that most plastics are not degradable, they accumulate over time, causing severe white pollution and destroying the ecological environment of the earth.
After the waste plastics are processed into granules, they only change their appearance and shape, do not change their chemical properties, and still have good comprehensive material properties. They can meet the technical requirements of blown film, wire drawing, pipe drawing, injection molding, and extrusion profiles. In the production of plastic products. Due to the prominent price advantage of recycled plastics and significant benefits, the domestic recycling market for waste plastics has also become a climate. At present, there are more than 5,000 kinds of waste material recycling enterprises in the country, with 160,000 recycling outlets, and it covers almost every township, town, and large, medium, and small cities. There are a large number of waste plastics of all types, suitable for batch production. buy. Correspondingly, there is an extremely large army of waste materials purchased in various parts of the country.
The current market demand for plastics in the Chinese market is still far greater than domestic production capacity. At present, manufacturers have turned to buy recycled plastics in order to reduce costs and improve environmental awareness. Transport and electrical and electronics manufacturers use recycled plastics in 25% to 30% of their products. In the past, waste plastic foam that was not worth much has risen from 2 yuan/kg to about 3.8 yuan/kg now, and with the large fluctuations in the international and domestic plastic raw material markets, the market for recycled plastics is in short supply, and the import of waste plastics is also on the rise. . In recent years, Japan, South Korea, and Russia, which are adjacent to our country, also have a large number of various types of waste plastics flowing into China via sea and land, and have shown a clear upward trend. China's Zhejiang, Shanghai, Guangdong, Fujian and other coastal provinces are more active.
In June 2004, relevant state departments announced that about 14 million tons of waste plastics in China each year are not recycled, and the recycling rate is only 25%. With the release of this news, a huge market for environmentally friendly recycling products surfaced.
Open up new ways to use recycled plastics
With the development of new technologies, the reduction of production costs and the promulgation of new policies, investment opportunities have come in the use of waste plastics to make recycled particles, packaging trays, thermal insulation and fireproof building materials, blown film bags and adhesives.
â—† Recycled Plastic Waste Particles: In April 2004, Nippon Steel Chemical Co., Ltd. relied on flame retardant polystyrene (PS), which had a high market share, and was recycled into plastics using compounding technology. Kisarazu, Chiba Prefecture The city's comprehensive research institute has set up an experimental factory with an annual processing capacity of about 1,000 tons. In addition to the chemical regeneration of waste plastics at Junjin Iron Works jointly with Nippon Steel, the company also researched the recycling business of foamed PS buoys. The company is engaged in the research and development of plastics recycling of waste plastics. Because of its technological advancement, the implementation of the home appliance recycling and reproduction method, and the soaring social demands, the company has decided to make a business, and will use the company's high share of home appliances. The flame-retardant PS is the center and the physical properties of the waste plastics are restored to the original state using the compounding technology, and the plastic particles are regenerated.
There is a great demand for recycled plastic scrap particles in China, such as a medium-sized agricultural film factory, which requires more than 1,000 tons of recycled particles each year. A medium-sized shoe factory needs more than 2,000 tons of recycled particles annually, and small privately-owned plastic companies need annual recycled particles. It is also a few hundred tons or more. However, on the supply side, taking Suzhou as an example, authoritative sources estimate that the total amount of waste plastics in Suzhou will be about 350 tons, and it will produce about 300 tons of plastic particles. In fact, the demand for one company in Suzhou is about 3,000 tons a year. Supply cannot satisfy the demand at all. And, this company's particles were ordered by a company in Taiwan at the factory. In other provinces and cities, there are also problems with supply exceeding demand, so the gap is large.
At present, the average price of high-pressure polyethylene raw materials for the plastics market across the country is 7,000 yuan/ton, while the average price of recycled pellets is 3,800 yuan/ton, which is a difference of 3,200 yuan per ton, resulting in many plastic processing products factories using recycled particles as low-cost processing. The raw materials for workers First, the obvious cost advantage makes its investment opportunities appear.
To establish a reprocessing plant for particles, it is necessary to invest 24,000 yuan for a complete set of granulation equipment, including a host, a pelletizer, a washing machine and a crusher, with a working capital of at least 5,000 yuan. The plant area of ​​the reclaimed particle plant can not be less than 50 square meters at least, and only 3-6 workers are required for a production line (two shifts). Monthly production of 8-14 tons, the production cost per ton of 2,000 yuan, the factory price of 3,000 yuan / ton, the monthly profit of about 8000-14000 yuan.
â—† Waste plastic packaging materials: In April 2004, researchers of Wuhan Modern Industrial Technology Research Institute used PE, PP, PVC waste plastics, crop straw, and wood fiber materials to regenerate the production technology of new environmentally friendly packaging trays for industry. success. The application of this technology not only can produce packaging trays, but also can produce a variety of industrial packaging materials, such as packaging boxes, support frames, moisture pad board, construction templates and other products. In addition to the advantages of high hardness, good decorative, moisture-proof and anti-corrosion, non-worm-eaten, anti-static, flame-retardant, etc., its service life is more than 5 times longer than general wood packaging materials, and it is used with new plastic packaging materials. Life is the same, but the cost can be reduced by more than 50%.
In March 2004, American scientists invented a new method for making composite materials from waste plastics and wood waste. This method uses a special molecule that can effectively join plastics and wood fibers. Due to the large-scale use of plastic products, recycling of waste plastics has become the focus of world research. Researchers from all countries are studying how to mix plastics with various natural fibers to make new materials. However, since plastics have lipophilic properties and wood fibers are hydrophilic, how to bond two different types of materials together is technically quite difficult. Mestre and his colleagues at the Institute of Mining Technology in New Mexico, USA, discovered that plastic and wood waste can be effectively bonded using a specially designed graft copolymer molecule. In the experiment, the researchers coated the molecules with a thin strip of wood. The plastic yoghurt bottles were then cut into thin strips and mixed with wooden strips. The mixture was then placed in a machine for heating and extrusion, and finally a firm sturdiness was obtained. Brown new material. At present, researchers are studying to further improve the performance of this composite material by changing the composition ratio of wood fiber and plastic in the mixture and the temperature adjustment in the heating process so as to achieve industrial production as soon as possible.
â—† Waste plastic building materials: People from Yuanping City, Shanxi Province used white waste contaminants, such as discarded plastic bags, boxes, and paper, to develop lightweight insulation building materials and achieved success. The construction report of Shanxi Research Institute of Building Sciences on its successful development of KGT light multi-functional insulation building materials, its density, compressive strength and thermal conductivity have reached the national standards of similar products, showing a special environmental significance and practical value. This kind of lightweight thermal insulation building material has the functions of insulation, heat insulation and other purposes for roofs, walls, balconies and various containers and pipelines. It can reduce the cost by about 30% compared with similar building materials, and it shows light weight and more remarkable thermal insulation performance. Features.
Waste plastic foam has been widely used in a new type of wall material in Ningxia. This new type of wall material has both acid and alkali resistance, increased thermal insulation performance, and reduced product cost. Due to the large amount of recycling by enterprises, white garbage has become a shortage of materials in the Yinchuan waste recycling market. According to statistics, at present, there are more than 30 enterprises that recycle white waste in Ningxia. In the past, worthless waste plastic foams kept rising in value over the past two years. From 1 kilogram to 2 yuan, it has now risen to 1 kilogram and reached 3 yuan. 3.8 yuan 1 kg. Due to the lack of waste plastic foam materials, several companies stopped production from time to time. Only Yinchuan Lightweight Panelboard Factory recycles more than 50 tons of waste plastic foam each year. This factory obtained composite lightweight wallboard and composite high-efficiency perlite insulation board. Both national patent products are produced from waste plastic foams.
On the Malika River in southern New Jersey in the United States, there is a 16.8-meter-long bridge constructed of only recycled soda bottles and plastic coffee cups. This bridge is unique because it is made from high-density polyethylene (HDPE) bottles and PS that is made from coat hooks. Mixing 65% of the polyethylene with 35% of the polystyrene, the resulting mixture is not only strong and not easily broken. As the addition of polystyrene fills the voids in the polyethylene like sea-surface structure, this material becomes very strong. So far the bridge has been used for almost two years, but the technical indicators are normal and the situation is very good. Although this new plastic formula was invented in 1998, it was not until people raised the bridge that was built entirely of recycled plastic except the galvanized steel fastener on the Malika River in 2002. This unique bridge weight
Recycled plastics are favored
As a measure to save energy and protect the environment, the recycling of used plastics is receiving increasing attention. In particular, the work of developed countries started early and has already received significant benefits. As we all know, plastic raw materials are chemical products that are extracted from natural petroleum. Oil is the lifeblood of modern industry, and it is a non-renewable natural resource. Asian countries generally face the oil energy crisis. China is a net oil importer, and oil is related to the country. Energy security. According to statistics from related departments, the plastic waste generated in a medium-sized city each year can satisfy the raw material needs of 20 medium and small-sized plastic enterprises. Therefore, recycled plastic is the regeneration of oil. The use of waste plastics for melt granulation can ease the contradiction between the supply and demand of plastic raw materials, and can also greatly save the foreign exchange of the country’s imported crude oil. In addition, due to the fact that most plastics are not degradable, they accumulate over time, causing severe white pollution and destroying the ecological environment of the earth.
After the waste plastics are processed into granules, they only change their appearance and shape, do not change their chemical properties, and still have good comprehensive material properties. They can meet the technical requirements of blown film, wire drawing, pipe drawing, injection molding, and extrusion profiles. In the production of plastic products. Due to the prominent price advantage of recycled plastics and significant benefits, the domestic recycling market for waste plastics has also become a climate. At present, there are more than 5,000 kinds of waste material recycling enterprises in the country, with 160,000 recycling outlets, and it covers almost every township, town, and large, medium, and small cities. There are a large number of waste plastics of all types, suitable for batch production. buy. Correspondingly, there is an extremely large army of waste materials purchased in various parts of the country.
The current market demand for plastics in the Chinese market is still far greater than domestic production capacity. At present, manufacturers have turned to buy recycled plastics in order to reduce costs and improve environmental awareness. Transport and electrical and electronics manufacturers use recycled plastics in 25% to 30% of their products. In the past, waste plastic foam that was not worth much has risen from 2 yuan/kg to about 3.8 yuan/kg now, and with the large fluctuations in the international and domestic plastic raw material markets, the market for recycled plastics is in short supply, and the import of waste plastics is also on the rise. . In recent years, Japan, South Korea, and Russia, which are adjacent to our country, also have a large number of various types of waste plastics flowing into China via sea and land, and have shown a clear upward trend. China's Zhejiang, Shanghai, Guangdong, Fujian and other coastal provinces are more active.
In June 2004, relevant state departments announced that about 14 million tons of waste plastics in China each year are not recycled, and the recycling rate is only 25%. With the release of this news, a huge market for environmentally friendly recycling products surfaced.
Open up new ways to use recycled plastics
With the development of new technologies, the reduction of production costs and the promulgation of new policies, investment opportunities have come in the use of waste plastics to make recycled particles, packaging trays, thermal insulation and fireproof building materials, blown film bags and adhesives.
â—† Recycled Plastic Waste Particles: In April 2004, Nippon Steel Chemical Co., Ltd. relied on flame retardant polystyrene (PS), which had a high market share, and was recycled into plastics using compounding technology. Kisarazu, Chiba Prefecture The city's comprehensive research institute has set up an experimental factory with an annual processing capacity of about 1,000 tons. In addition to the chemical regeneration of waste plastics at Junjin Iron Works jointly with Nippon Steel, the company also researched the recycling business of foamed PS buoys. The company is engaged in the research and development of plastics recycling of waste plastics. Because of its technological advancement, the implementation of the home appliance recycling and reproduction method, and the soaring social demands, the company has decided to make a business, and will use the company's high share of home appliances. The flame-retardant PS is the center and the physical properties of the waste plastics are restored to the original state using the compounding technology, and the plastic particles are regenerated.
There is a great demand for recycled plastic scrap particles in China, such as a medium-sized agricultural film factory, which requires more than 1,000 tons of recycled particles each year. A medium-sized shoe factory needs more than 2,000 tons of recycled particles annually, and small privately-owned plastic companies need annual recycled particles. It is also a few hundred tons or more. However, on the supply side, taking Suzhou as an example, authoritative sources estimate that the total amount of waste plastics in Suzhou will be about 350 tons, and it will produce about 300 tons of plastic particles. In fact, the demand for one company in Suzhou is about 3,000 tons a year. Supply cannot satisfy the demand at all. And, this company's particles were ordered by a company in Taiwan at the factory. In other provinces and cities, there are also problems with supply exceeding demand, so the gap is large.
At present, the average price of high-pressure polyethylene raw materials for the plastics market across the country is 7,000 yuan/ton, while the average price of recycled pellets is 3,800 yuan/ton, which is a difference of 3,200 yuan per ton, resulting in many plastic processing products factories using recycled particles as low-cost processing. The raw materials for workers First, the obvious cost advantage makes its investment opportunities appear.
To establish a reprocessing plant for particles, it is necessary to invest 24,000 yuan for a complete set of granulation equipment, including a host, a pelletizer, a washing machine and a crusher, with a working capital of at least 5,000 yuan. The plant area of ​​the reclaimed particle plant can not be less than 50 square meters at least, and only 3-6 workers are required for a production line (two shifts). Monthly production of 8-14 tons, the production cost per ton of 2,000 yuan, the factory price of 3,000 yuan / ton, the monthly profit of about 8000-14000 yuan.
â—† Waste plastic packaging materials: In April 2004, researchers of Wuhan Modern Industrial Technology Research Institute used PE, PP, PVC waste plastics, crop straw, and wood fiber materials to regenerate the production technology of new environmentally friendly packaging trays for industry. success. The application of this technology not only can produce packaging trays, but also can produce a variety of industrial packaging materials, such as packaging boxes, support frames, moisture pad board, construction templates and other products. In addition to the advantages of high hardness, good decorative, moisture-proof and anti-corrosion, non-worm-eaten, anti-static, flame-retardant, etc., its service life is more than 5 times longer than general wood packaging materials, and it is used with new plastic packaging materials. Life is the same, but the cost can be reduced by more than 50%.
In March 2004, American scientists invented a new method for making composite materials from waste plastics and wood waste. This method uses a special molecule that can effectively join plastics and wood fibers. Due to the large-scale use of plastic products, recycling of waste plastics has become the focus of world research. Researchers from all countries are studying how to mix plastics with various natural fibers to make new materials. However, since plastics have lipophilic properties and wood fibers are hydrophilic, how to bond two different types of materials together is technically quite difficult. Mestre and his colleagues at the Institute of Mining Technology in New Mexico, USA, discovered that plastic and wood waste can be effectively bonded using a specially designed graft copolymer molecule. In the experiment, the researchers coated the molecules with a thin strip of wood. The plastic yoghurt bottles were then cut into thin strips and mixed with wooden strips. The mixture was then placed in a machine for heating and extrusion, and finally a firm sturdiness was obtained. Brown new material. At present, researchers are studying to further improve the performance of this composite material by changing the composition ratio of wood fiber and plastic in the mixture and the temperature adjustment in the heating process so as to achieve industrial production as soon as possible.
â—† Waste plastic building materials: People from Yuanping City, Shanxi Province used white waste contaminants, such as discarded plastic bags, boxes, and paper, to develop lightweight insulation building materials and achieved success. The construction report of Shanxi Research Institute of Building Sciences on its successful development of KGT light multi-functional insulation building materials, its density, compressive strength and thermal conductivity have reached the national standards of similar products, showing a special environmental significance and practical value. This kind of lightweight thermal insulation building material has the functions of insulation, heat insulation and other purposes for roofs, walls, balconies and various containers and pipelines. It can reduce the cost by about 30% compared with similar building materials, and it shows light weight and more remarkable thermal insulation performance. Features.
Waste plastic foam has been widely used in a new type of wall material in Ningxia. This new type of wall material has both acid and alkali resistance, increased thermal insulation performance, and reduced product cost. Due to the large amount of recycling by enterprises, white garbage has become a shortage of materials in the Yinchuan waste recycling market. According to statistics, at present, there are more than 30 enterprises that recycle white waste in Ningxia. In the past, worthless waste plastic foams kept rising in value over the past two years. From 1 kilogram to 2 yuan, it has now risen to 1 kilogram and reached 3 yuan. 3.8 yuan 1 kg. Due to the lack of waste plastic foam materials, several companies stopped production from time to time. Only Yinchuan Lightweight Panelboard Factory recycles more than 50 tons of waste plastic foam each year. This factory obtained composite lightweight wallboard and composite high-efficiency perlite insulation board. Both national patent products are produced from waste plastic foams.
On the Malika River in southern New Jersey in the United States, there is a 16.8-meter-long bridge constructed of only recycled soda bottles and plastic coffee cups. This bridge is unique because it is made from high-density polyethylene (HDPE) bottles and PS that is made from coat hooks. Mixing 65% of the polyethylene with 35% of the polystyrene, the resulting mixture is not only strong and not easily broken. As the addition of polystyrene fills the voids in the polyethylene like sea-surface structure, this material becomes very strong. So far the bridge has been used for almost two years, but the technical indicators are normal and the situation is very good. Although this new plastic formula was invented in 1998, it was not until people raised the bridge that was built entirely of recycled plastic except the galvanized steel fastener on the Malika River in 2002. This unique bridge weight
Sideboards, also known as buffets or credenzas, are versatile furniture pieces commonly used in dining rooms, living rooms, or entryways. They provide both storage and display space while adding a stylish and functional element to the room. Here are some key aspects to consider when choosing a sideboard:
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Size and Proportions: Measure the available space in the room where you plan to place the sideboard. Consider the length, height, and depth of the piece to ensure it fits appropriately and doesn't overpower the room or obstruct walkways.
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Storage Capacity: Assess your storage needs and choose a sideboard with sufficient space to accommodate your belongings. Look for a combination of drawers, shelves, and cabinets that can store items such as dishes, table linens, servingware, glassware, or other household items. Adjustable shelves or removable dividers can provide flexibility in organizing your belongings.
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Style and Design: Consider the overall style and decor of the room when selecting a sideboard. Whether your room has a modern, traditional, rustic, or eclectic style, choose a sideboard that complements the existing furniture and aesthetic. Pay attention to details such as the shape, finish, handles, and hardware to ensure they align with your desired style.
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Material: Sideboards are available in various materials, including wood, metal, glass, or a combination of these. Consider the durability, maintenance requirements, and visual appeal of different materials to find the one that suits your preferences and matches the existing furniture in the room.
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Functionality: Determine how you plan to use the sideboard. If it's primarily for dining room use, consider features like wine racks, plate grooves, or a hutch top for displaying fine china or decorative items. If it's for a living room or entryway, focus on storage options for books, media devices, or other personal items.
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Surface Space: Evaluate the amount of surface space you need on the sideboard. Consider whether you'll use it for displaying decor items, serving food during gatherings, or as a workspace for setting up a beverage station or a temporary bar. Ensure there's enough room to accommodate your intended use.
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Door Type: Sideboards can have different door configurations, including hinged doors, sliding doors, or a combination of both. Consider the accessibility you prefer and the space available in the room when choosing the door type. Sliding doors can save space and provide a sleek look, while hinged doors offer a more traditional and open feel.
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