Dalian Huatai Plastic Machinery Co., Ltd.

China's green low-carbon plastic prospects

China's per capita plastic consumption in 2010 reached 46 kg, compared with five years ago, more than doubled over the same period of 40 kilograms per capita level. Insiders said that China has become the world's plastic production, consumption and import and export, the plastics industry is the largest emerging industries in China's light industry, green energy saving low-carbon plastic will be the focus of future development. Released the data held in Guangzhou in Guangdong Plastics Industry Association, Fu on the 10th the "CHINAPLAS2011 Chinaplas" news conference. Fu An, said that the "Eleventh Five-Year" period of national export tax rate was adjusted several times and the financial crisis, China's exports of plastic products has declined, exports flat, plastic products export volume and export volume in 2010, respectively, and over 700 million tons and $ 20 billion, in 2005 the figures were 12.28 million tons and 16.6 billion U.S. dollars. Although exports are damaged, the domestic consumption of rapid growth to support the scale of the industry as a whole doubled in five years. According to breaks shore statistics, in 2005 China's per capita plastic consumption is 22 kg, only half of the current level. In 2010, the total output and output value of plastic products in China reached 58.3 million tons and 1.25 trillion yuan, 2.7 times and 2.4 times five years ago, the average annual growth rate over 30%. Compared to developed countries in Europe and the United States, China's per capita plastic consumption is less than half its level. Held for the 24th CHINAPLAS Chinaplas Adsale Exhibition Services Ltd, said Stanley Chu, energy saving and environmental protection, new materials, industrial upgrading has been included in the "12th Five-Year Plan" focus of development of plastic widely used as a materials in all areas of life, there will be a huge development potential, including bio-plastics, degradable plastics and plastic recycling will become the main direction of sustainable development of the plastics industry. It is understood that the "12th Five-Year Plan" of China's plastics machinery industry, the energy-saving plastic molding equipment has been included in one of the six key areas of development. Currently accounting for one fifth of the production of plastic machinery manufacturing large province of Guangdong, for example, Fu An, said, "Eleventh Five-Year" period, Guangdong enterprises in the polymer material forming processing, plastic wide extension of pressure equipment, plastic raw materials to change and other technical areas of innovation, positive transformation and upgrading in the field of traditional products, the future will broaden applications in lighting, medical, construction and other emerging applications as an alternative to metal, cement, wood, etc. to achieve energy saving. The theme of "green manufacturing o plastic future the" CHINAPLAS2011 Chinaplas "will be held in Guangzhou from May 17 to 20, the show has become as one of the first in Asia and the world's top three international Chinaplas this year will be dedicated bio-plastics and degradable plastics recycling technology, energy and plastics science and technology specialized exhibition and forum, help rubber and plastics industry "green".

How beer bottles winning the terminal market

A bottle of beer quality is good or bad for consumers, the thing you see is the packaging of this bottle of beer. The product packaging is both a selling point, is the highlight of the market unique and innovative packaging is often the most likely to move the hearts of consumers. Therefore, the beer companies not only to the production of standard and superior quality products, and have a dignified appearance of the trademark and packaging, in order to make their products more attractive and competitive, to make its brand more firmly established. Prominent theme of beer packaging skills to win (1). The beer packaging should highlight the characteristics of the product, style and function, reflecting the taste of the product and marketing culture. Only highlights the packaging of the product quality of content to quickly product information in a timely and accurate delivery to the consumer, enabling consumers to its profound intimacy and identity, and thus shorten the time of the decision-making of consumers when buying a product. lead to the rapid creation of a purchase decision. If the theme of the product packaging is not clear, to get consumers to agree with your business, buy your product, it is almost impossible. (2) what they seem. The choice of packaging must be cost-conscious, packaging costs and expenses to the value of the product or quality levels to adapt. General beer companies have different grades of beer varieties. Grade its quality and value, companies must use its value to match the packaging materials and packaging and decoration, in order to appropriately contrast the intrinsic quality of the product, in order to facilitate the clear choice for consumers. Not only to prevent a "first-class product, second-class packaging, third-class price should also prevent the behavior of the fair without and foul within." (3) The clever use of color. Beer products, packaging design, the use of color is also very important. Competition in the market for goods has the visual characteristics significantly different from competitors' products, more full of the charm of the temptation to consumers to stimulate and guide consumers and increase consumer brand memory, which are inseparable from the color of the design and to use. Product packaging design, patterns and colors should fully reflect the unique character and style of the enterprise. Such as Maotai beer as an extension of the national liquor brand, its designers the imagination of the national colors --- red, yellow as the spokesperson of the Maotai beer, the use of "national color" as packaging tone, providing people with a noble and auspicious a strong visual impact, and thus to consumers to a whole new feel. It should be noted that the packing patterns and colors to adapt to the national customs and religious beliefs of different consumers for beer brands into the international market and even more so. (4) psychological strategy. With the people's living standards improve, people's consumption concept, consumer psychology has occurred profound changes. People to buy beer is not just to satisfy their physiological needs, but also to meet the psychological needs, and affordable product packaging reflects the cultural quality of the product to meet the consumer to change the psychological needs. This requires that the beer companies with product packaging shape, volume, weight, color, fonts, and patterns of selection, consistent with the consumer's individual psychology and strive to obtain the coordination of packaging and goods on the mood to stir up consumer the purchase and consumption desire to cultivate brand loyalty and consumer groups. The basic functions of the wine packaging (1) protection. The packaging should ensure product safety and hygiene, storage, transportation and sales process will not be lost, damage and deterioration, which is the basic function of packaging. (2) to beautify the value-added features. Nice packaging shapes, vivid patterns and novel decor can set off the product image, increase the added value of the product. (3) the marketing function. The packaging is a "silent salesman", and consumers understand the product, packaging can cause the consumer interest, to stimulate buying motives, which is conducive to expanding the sale of goods. The status and role of the beer packaging in the marketing activities of modern marketing is increasingly compelling. As the famous American management guru Peter Drucker said: "the key to future competition does not lie in the factory capable of producing products to provide added value to its products: packaging, services, products, user consultation, timely delivery and to measure the value of all things. "Thus, the status of packaging in the overall product concept increasingly important. Only the packaging has become a competitive force, a truly successful packaging.

Advantages and development prospects of plastic shrink packing

In the last couple of years, heat shrink packaging are quickly dominate the market, whether it is the food industry, beverage industry, daily chemical industry or the pharmaceutical industry, shrinking quickly be applied in a variety of products. For this market phenomenon, Articles interview survey of nearly 20 well-known enterprises of the beverage, cosmetic, pharmaceutical, beer and other major industries, through the investigation we found that the biggest reasons for shrink packaging technology is certainly the {TodayHot}: can reduce costs, promote sales, increase the shelf display effect. This article from the heat shrinkable several advantages, talk about the thermal contraction of the industry to choose. Reduce costs - shrink packing maximum advantage, the vast majority of canned beverages and a large part of the plastic bottled drinks in the form of heat shrink packaging, heat shrink packaging, according to the relevant person in charge of the Beijing Coca-Cola Beverage Co., Ltd. a prospect very good form of packaging, has been abroad with heat shrink packaging to completely replace the carton or half pallet cartons such cases, but due to the current logistics environment of the domestic market and international markets can not be mature logistics management , heat shrink technology in the domestic market to international standards, there are some obstacles, is expected over the next three to five years, with the shrink packaging technology development and shrink film bearing capacity of the continuous improvement in the {HotTag} specifications, packaging, shrink packaging can fully replace the cardboard boxes or heat shrinkable pallet boxes. The early adopters of the relevant person in charge of the heat shrink packaging in the form of Ting Hsin International Group just T Xi Zhang: using heat shrinkable alternative to cardboard boxes, the cost can be reduced at least 30%. This is the most important reason for heat shrink technology to attract the beverage industry. Of course, heat shrink packaging than cartons during transport protection function is relatively worse, but with the continuous development of innovative heat shrinkable material, heat shrink applications in the beverage industry is bright! , Heat shrinkable technology needs to improve a few drinks: contraction of the equipment need to be more flexible, personalized with the change of consumer spending habits, specifications heat shrinkable great changes, from 2 bottles of contraction to 12 bottles, 24 bottles, therefore, beverage companies need to be able to meet the contraction of the different specifications of packaging equipment, In addition, if the increase in heat shrink packaging of different specifications handle to facilitate the consumers to carry the beverage companies want. The flexible device that provides personalized packaging equipment is the future development trend of the heat shrink packaging technology. (We will address this issue specifically requested Italy SMI China Office introduced the following article: shrink packaging improvement and diversification trends.) Dairy companies: shrinking devices flexible to be improved dairy enterprises in market competition under pressure, is trying to use various means to improve product competitiveness and market share, promotional tools is a common one. If the original 8 even the cup product packaging to "buy eight, get two" promotion form, the heat shrink packaging machine has exposed some weaknesses: most of the contraction machine is flexible and not strong, not very good adapt to this demand of the dairy enterprise, the only on-site marketing promotional products with tape wrapped around the 8 cup product on the box, and the serious impact to the aesthetics of the product, reducing the quality of packaging. Therefore, heat shrink packaging machinery in order to have more room for development, must be resolved as soon as possible to the users want the device to this demand with good flexibility. Difficult to find through our investigation, the industry end-user companies shrink packaging equipment to reduce packaging costs, and promote the sales of these two aspects can be described as high hopes, I believe the shrink packaging technology continues to evolve, the market will have a more the use of this form of packaging products, more flexible and efficient heat shrink packaging technology will be the end-user enterprises in the future expectations of shrink packaging equipment! .

Processing and Application of heat shrinkable polyester (PET) films

Heat shrinkable plastic film is stable at room temperature, heating time (above the glass transition temperature), shrink, and is ideal occurred more than 50% of the heat shrink in one direction. Shrinkable plastic film packaging is characterized by: body-transparent, and reflect the product image; the Jinshu packaging, anti-Divergence; rain, moisture, mildew; no recovery, there are certain security features. Heat shrinkable plastic film commonly used in the convenience food, beverage, electronics, electrical appliances, metal products, such as packaging, shrink labels for the most important areas of application. Heat shrinkable plastic film used for the packaging of household goods in addition to as a shrink label, in recent years. It enables packaged goods to avoid impact, rain, moisture, rust, but also make the fine print of packaging products to win customers at the same time it is a good show a good image of the manufacturer. At present, more and more manufacturers of packaging printed shrink film to replace the traditional transparent film. Because printed shrink film can improve the appearance of the product grade, product advertising, allows trademark brand in the minds of consumers have a profound impression. Shrinkable plastic film is generally more than amorphous plastics processing system have, for example, polystyrene, PVC, PVDC. Polystyrene (PS) shrink film strength is low, the impact of intolerance, it is rarely used; polyvinyl chloride (PVC) is not conducive to recycling, does not meet the requirements of environmental protection. Abroad, especially in Europe, polyvinyl chloride (PVC) plastic film has been banned in the field of packaging, especially the use of food packaging. Polyester (PET) heat shrink film is a new type of heat shrinkable packaging material. Because of its easy to recycle, non-toxic, odorless, good mechanical properties, in particular, is in line with environmental protection and other features, polyvinyl chloride (PVC), polyester (PET) in the developed world has become replaced by an ideal substitute for heat shrinkable film. Heat shrinkable polyester (PET) film copolymerization polyester (PET) film is a crystalline material, ordinary polyester film can only be handled through a special process less than 30% of the heat shrinkage. To obtain higher shrinkage of the polyester film, you must be modified. In other words, in order to prepare high heat shrinkage polyester film, ordinary polyester, poly (ethylene terephthalate) copolymer modified. Copolymerization of PET film of the highest thermal shrinkage of up to 70%. Ordinary polyester obtained from terephthalic acid (PTA) and ethylene glycol (EG) after esterification, polycondensation reaction, a crystalline polymer (strictly speaking, is the coexistence of crystalline and amorphous polymer) . In addition to the two main components of the terephthalic acid (PTA) and ethylene glycol (EG), the so-called copolymerization, and then the introduction of the third or even fourth component involved in copolymerization purpose is to make it generate an asymmetric molecular structure the formation of amorphous PET copolymer. The introduction of the third or even fourth monomer can be a dicarboxylic acid or diol. Among them, the dicarboxylic acids are isophthalic acid, malonic acid, succinic acid, adipic acid, sebacic acid, etc.; diol neopentyl glycol, propylene glycol, diethylene glycol, 1.4 cyclohexane two methanol and other. Copolymerization, the obtained PET copolymers such as dicarboxylic acids (Acidic), called of APET; terms of diols (glycolic) PET copolymer copolymerization system, they are called PETG. Above the introduction of the third monomer, the most commonly used dicarboxylic acid is isophthalic acid (IPA), Of the IPA's can change the tight structure of the polyester symmetrical destruction of the regularity of the macromolecular chains, thereby reducing the interaction between the macromolecules, the polyester molecular structure becomes more supple. The same time, due to the introduction of the IPA's polyester difficult nucleation crystallization, and the as IPA introduction of the increase in the amount of APET copolymer by partial crystallization of the amorphous polymer transition, due to the crystallization of the modified polyester APET decline the amorphous region becomes larger, it can be used in the manufacture of high-shrinkage film. The amount recommended IPA's around 20% is appropriate. The introduction of the third monomer diols. The most commonly used diols 1.4 cyclohexane dimethanol (CHDM). In the process of polyester copolymer, adding the CHDM change polyester tg, tm, and the crystallization rate will have a huge impact. As the CHDM content increases, the total of the melting point of polyester PETG decreased the glass transition temperature increased, the copolymer becomes amorphous. However, 1.4-cyclohexane dimethanol (CHDM) the amount required to be controlled in the appropriate range, usually recommended CHDM amount to 30 ~ 40%. Diols modified PETG not only can be used to prepare high-shrinkage film can also be used to produce the sealing film, high transparent diaphragm wide range of uses. The mechanism of contraction of the heat shrinkable film BOPET film production process, for example, its production process is the first PET copolymer resin dried, and then to the extruder melt extrusion, cast film die / cold drum, and then cast film is heated to above the glass transition temperature, melting temperature below a proper temperature range, and the external force, a certain multiple of one-way or two-way stretch, usually require lateral 3.5 to 4.0 times the stretch. PET macromolecular chains by stretching along the direction of orientation of the external force, then so cooling and sizing, have been oriented PET molecular structure "freeze" stereotypes. This external force, the high elastic deformation with thermal contraction of the "memory effect", this "memory effect" of the film when the stretching temperature and then heated to above the frozen macromolecules oriented structure relaxation On the macro performance of the contract for the PET film. It is worth mentioning that this PET film heat shrinkage is mainly contributed by the amorphous part of the orientation. This is why the copolymer modified thin film of amorphous PET (APET or PETG), much larger than ordinary crystalline PET film heat shrinkage sake. Therefore, by increasing the orientation film amorphous region will be able to greatly enhance the film heat shrinkage. As mentioned above, ordinary polyester film, heat shrinkable only 30%, and copolymerization polyester thermal shrinkage can be as high as 70% or more. Heat shrinkable polyester film production process conditions and its impact is a brief introduction as follows: 1. Dried: polyester macromolecular chains containing ester, hygroscopic tendency, in the case of heat, even if the presence of trace amounts of moisture, also prone to hydrolysis. As a result, the molding process, will produce a lot of bubbles, affecting the normal production; the same time, due to hydrolytic degradation, the molecular weight decreased, PET quality could deteriorate. Therefore, prior to melt extrusion processing, must be dried. Recommend the use of vacuum drum drying, drying temperature 70 ~ 75 ° C, drying time> 6h. Melt Extrusion: After the dried copolymer PET resin can join a single-screw extruder for melt extrusion temperature of each set to :180-240-260-270-275 ° C, the melt temperature of about 270 ℃. Vented twin-screw extruder melt extrusion, you can save a vacuum drum drying system. Vented twin-screw extruder is generally set with two exhaust ports, which are connected to the vacuum system with two. Achieve the same effect, but can greatly reduce investment and operating costs through the vacuum pump PET resin contained in the water and melt extrusion process to produce low molecular weight compounds can be siphoned. (3) cast casting tablets: melt extrusion melt melt metering pumps, filters, melt pipe to enter the hanger die flow from the die lip mouth until the cooling drum and the formation of cast piece. The cooling water temperature of the cooling drum is controlled at about 30 ℃. 4-way Stretch: high heat shrinkable polyester film are often asked to unidirectional contraction, in particular, requirements for lateral heat shrinkable. Transverse tensile preheating temperature of 90 ~ 100 ° C, the stretching temperature of 105 ~ 110 ° C, the draw ratio of 3.5 times. The chain clip to strengthen air-cooled, control the the clamps temperature below 110 ℃, in order to prevent the copolymer resin stick folder. Stretching the PET film cooled immediately without the need for heat setting processing. Rewinding, slitting: uniaxial tension of PET film by the line thickness, traction rewinding slitting, inspection, packing, and finally according to the specifications required by the user, that is, heat shrinkable film finished. With the continuous development of the plastic packaging industry and the continuous improvement of people's living standards, juice, soft drinks and other beverages are mostly integrated performance excellent, good barrier properties, non-toxic and odorless, PET plastic bottles, packaging, its very considerable amount. According to statistics, the National PET beverage bottles dosage of at least 25 tons or more, accompanying PET shrink label film the amount of up to 2 to 3 million tons. In addition, since China's WTO entry, foreign trade continues to expand, in order to improve the image and value of export commodities, must also use the more upscale packaging materials such as polyester heat shrinkable film. In short, the application of heat shrinkable PET film very promising!

Extrusion machine changer knowledge introduced

Most plastic materials contain impurities, these impurities can be easily installed in the extruder Jane changer for polymer melt flow on the road to clear. Network is the same with the extruder barrel diameter textile network disk. Typically, with layers of different mesh to form a package group. Fine mesh to filter the smallest solid particles in the melt flow than the solid, the outer layer of coarse mesh can prevent larger particles prematurely into the inner layer of fine mesh. The forces generated by the resistance to melt flow, the filter group a secret hole in the lining of a circular steel plate, called the shield embedded in the extruder barrel at the end of the groove. Order to replace the lining of the blocking network, first remove the downstream equipment, lining replaced the old network with a clean network, re-installed into the production line. Changer Used to replace the network group method does not require downtime and cost of labor. The design is divided into two main types: interchangeable and continuous. Interchangeable changer there are two identical groups. The one installed in the melt flow path. When netgroup dirty, replaced with another set of clean group. At the same time, the same old group to get out to be replaced. Install two sets of network group in the same steel plate around an axis, or slide along the guide line. Former manual operations rely on leverage, which rely on hydraulic slide from side to side back and forth to the Network board. Another changer operating with a valve, so that the melt in the same group from the same group that blocked reverse the flow of new. Continuous screen changer: continuous screen changer will be the new network is gradually moved to the melt flow at the same time to remove the old network. Changer movement speed by impurity can automatically adjust the pressure and melt temperature to eliminate the intermittent operation of the changer with a continuous screen changer. A group of consecutive changer designed according to the rotation of the skateboard. A number of network groups arranged on the ratchet mechanical drive turntable peripheral. Turn the wheel, the same group used to shift from the melt stream, before exposure to the melt flow by hand replaced by a new in the same group. Some machines use a long strip of network (typically 120 feet long). The site of a long strip of the network to enter or leave the machine, a small amount of plastic cooling, the hardened anti-polymer leakage. These machines with an external hydraulic pull out the filter. Another design is to pull out the filter rather than the external pressure head.

Carbon dioxide system of plastic prospects

Carbon dioxide is a greenhouse gas, many people the impression that it is very negative. It is the burning of oil and gas released from a gas is an environmental greenhouse effect, the "culprit", but also a potential carbon resources. Given the potential threat posed by the greenhouse gas emissions, the global majority of countries have joined the ranks of efforts to reduce greenhouse gas emissions (especially carbon dioxide). The carbon dioxide recycling become a hot topic of the moment. Environmentally friendly materials in the raw materials acquisition, product manufacture, use or recycling, utilization and waste disposal and other aspects of the environmental load of a minimum of material resources and energy consumption, ecological and environmental pollution, high utilization rate of renewable . At home and abroad in research and development with innovative advantages of biodegradable plastic raw materials - carbon dioxide-based polymers, it is worthy of concern by the petrochemical industry and environment-friendly plastic raw materials. Ordinary plastic raw materials such as polyethylene, polypropylene and other polymers based on hydrocarbon monomer polymerization, carbon dioxide-based polymers based on hydrocarbon and carbon dioxide as raw materials copolymerization, in which the carbon dioxide content of 31% to 50% Compared with conventional polymers, oil hydrocarbons and raw materials consumption is greatly reduced. Carbon dioxide-based polymers can not only reduce oil consumption, and environmental adaptability is also ideal. Carbon dioxide degradable plastic is completely biodegradable plastic, can be completely degraded in the natural environment can be used for disposable packaging material, utensils, and preservation of materials, disposable medical materials, plastic film and other aspects. The carbon dioxide degradable plastics as environmentally friendly products and high-tech products, is to become the world's attention in research and development hotspot. Use of this technology to produce biodegradable plastics, not only to industrial emissions of carbon dioxide made from environmentally friendly biodegradable plastic, but also to avoid the secondary pollution of the traditional plastic products on the environment. Its development, not only to expand the function of the plastic, and depleting oil resources and to a certain extent is a supplement. Therefore, carbon dioxide production and application of degradable plastics, in terms of environmental protection, or from the use of renewable resources point of view, are of great significance.

Recycling of waste plastic products status quo and development trend analysis

With a large number of applications of the plastic into the plastics recycling industry in China market in the 21st century gradually bustling, small and medium enterprises such as springs, active investment, pure business model forward from the previous family workshops recycled plastic mode to market demand as the driving force change, and is developing into recycling and processing cluster, the intensification of market transactions, in order to completely rely on market demand and price-driven environment-friendly industrial economy-oriented. At present, the number of plastics recycling companies in China has tens of thousands of recycling outlets throughout the country, has formed a number of large-scale recycled plastic recycling market and distribution center for processing, mainly in Guangdong, Zhejiang, Jiangsu, Fujian, Shandong, Hebei, developed provinces of Henan, Anhui, Liaoning and other plastics processing industry. Wen'an, Yuyao, Zhejiang, Ningbo, Dongyang, Cixi, Taizhou; Nanhai, Guangdong Province, Dongguan, Shunde, Shantou; Xinghua, Changzhou, Taicang, Lianyungang, Xuzhou; Hebei, Baoding, Xiong County, Yutian; Shandong Laizhou, Zhangqiu Linyi; Anyang, Henan Province, Changge Luohe; Anhui Five Rivers such as the recycled plastic recycling, processing, growing business market size, annual turnover is mostly in the hundreds of millions to billions of dollars, was a booming trend. Major centers around the city such as Beijing, Shanghai, Tianjin, Chongqing, Guangzhou, Wuhan, Nanjing, Hefei, Xi'an, Taiyuan, Kunming, Chengdu, Shenyang, Urumqi and other parts of a large number of similar processing, trading, gathering places. Recycled plastic recycling and processing enterprises and the number of large and steady growth is mainly based on the self-employed and farmers, there are a number of other industry investors. The plastics recycling industry for rural economic growth, for the surplus rural labor employment and income to provide a channel for the use of renewable resources, made a great contribution in the cause of environmental protection is an important part of the environmental protection industry, recycled plastics basis at the end of its service life still has a recovery value the existence of different forms of plastic, nearly all thermoplastics have a recycling value. In the production process of synthetic resins, plastic products and semi-finished production process, the use of plastic logistics process and consumers to produce recycled plastic. Generally produced in the synthesis process called pre-consumer plastic; referred to as consumer generated in the circulation and consumption, the use of plastic. Pre-consumer plastic production, stable quality and value, renewable, generally in the production process is handled properly, can completely reuse. We are talking about recycled plastic is generally lose value in the post-consumer recycled plastic products can be recycled. Plastic recycling to centralized, classification, scientific and rational disposal of renewable value can be obtained to achieve recycling. Part of the imports of waste plastics before the plastic is a consumption abroad, better quality, higher value, can be used as renewable raw materials should be encouraged to import large quantities. The source of the major categories of varieties of recycled plastic with plastic film (including plastic bags and plastic sheeting), plastic wire and woven products, foam products, plastic packaging and containers, cable coating materials and a variety of daily groceries, sports and entertainment, health care and other household plastic products, including film, foam, boxes and containers, knitting, sheet and other plastic products are mainly used in plastic packaging. There are also some other plastic packaging products (plastic tray), agricultural plastic products (such as agricultural plastic water-saving devices), decoration of plastics scrap rate is also higher. Plastic packaging consumption in 2004 was 6.344 million tons, more than seven million tons in 2005, it is estimated that at least 80% of abandoned within a year, is the main source of recycled plastic. With similar foreign, such as the amount of plastic packaging recycling in 2001 for the plastics total recovery of 91.2%. In addition, some recovery of little value or cost recovery, and disposal difficult, such as plastic composites, ultra-thin packaging materials, plastic film, disposable plastic products, such as impact on the environment can not be ignored. However, like plastic pipe fittings, profile, enhanced anti-leakage geotextile material (including waterproofing membrane) structural plastic building materials in recent years the use of large growth, the actual service life is longer, is not yet to a large number of end of life Therefore, this part of the waste volume is not large. Appliances according to the normal life of 10 to 15 years, the TV set to be scrapped an annual average of more than 500 million units, washing machines, an annual average of 5 million units, refrigerators, each year about 4 million units, in this our country out of more than 15 million units a year of waste appliances. In recent years, electronic communications equipment such as computers, mobile phones, VCD, DVD, LP, CD-ROM replacement rate to speed up each year scrapped a sharp rise in the number of more serious environmental problems. Plastic is an important part of household electrical appliances, in accordance with Table 4 the proportion of projections, resulting annually renewable plastic at least 15 million tons, taking into account the amount of recycled plastic scrap electronic communications equipment, and the figure of more than 20 million ton. The main component of these recycled plastic is polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), ABS, etc., the recycling value; and some thermosetting plastics, polyurethane foam, glass fiber reinforced plastic materials relatively difficult to recycle. Reasonable disposal of recycled plastic is one of the important aspects of the regeneration process of discarded appliances. Different home appliances supporting different types of plastics, the same product due to manufacturers of different types of plastics are not the same, and sometimes the same types of plastics and the use of additives, functional masterbatch formulations, which gives home appliances plastic recycling cause some difficulty to be taken seriously, and strive to be an efficient recycling, making it as far as possible to reduce the pressure on the environment and energy waste. Electrical and electronic matching the amount of plastic parts has reached over 100 million tons, widely used in industrial facilities, information, transportation, aerospace and other fields, product upgrading soon. As these products are gradually entering a large number of end of life, become an important source of waste plastics. The greatest benefit of plastic manufacturing automotive components is to reduce vehicle weight, saving costs and processes, to improve some of the performance of the car, developed countries, average automotive plastics has more than 100kg, the car is scrapped will bring the car recycling of plastic resources and environment and reasonable deal with the problem. According to the authority of the automobile industry experts predict that China's automobile production in 2005 will reach 5.7 million in 2006, total vehicle demand will reach 6.5 million. China's automotive plastics average amounted to 70, the annual consumption of more than 40 million tons. Automotive plastic varieties are: PVC, PP, PE, PU, ​​ABS,, PA, POM. As the car is scrapped increased year by year, the car, like plastics and appliances and electrical and electronic plastic volume has steadily increased, Recycling the same become the focus of the plastic waste sources to deal with a similar principle. In 2010, China's automotive plastics need dosage will reach 80 million tons. Therefore, the recycling of scrapped automobiles plastic, recycled for the task will become increasingly difficult.

Figures the difference between the use of plastic bottles

Many beverage bottles, mineral water bottles at the bottom there is a triangle sign with an arrow inside labeled with the number of different figures represent the different materials. "01" --- PET (polyethylene terephthalate glycol) water bottles, soda bottles with this material is made of. Dong Jinshi, beverage bottles can not be recycled installed hot water, this material is heat-resistant to 70 ° C, only suitable for the warm drink or cold drink, installed high-temperature liquids or heating is easy to deform, the dissolution of substances hazardous to health. The scientists found that after 10 months of this plastics may release carcinogens, toxic to the human body. Therefore, beverage bottles used would be lost, not to be used as cups or containers used for storage costumes other items. "02" --- HDPE (High Density Polyethylene) for installing the cleaning supplies, bath products, plastic containers, plastic bags used in supermarkets and shopping malls and more is made of such material that can withstand the high temperature of 110 ℃, marked food plastic bags can be used to dress the food. For installing the cleaning supplies, bath products, plastic containers can be reused after careful cleaning, but these containers are usually not good cleaning, residue of the cleaning supplies, become a breeding ground for bacteria, not completely clean, it is best not to recycle. "03" --- PVC (polyvinyl chloride) According to reports, the plastic products of this material is easy to produce toxic and hazardous substances from the two aspects, first, the production process is not complete polymerization of single molecules of vinyl chloride, two harmful substances in the plasticizer. These two substances in the face of high temperatures and grease easily precipitate poison with the food into the body, are carcinogenic. At present, the container of this material is relatively small for packaging food. If you are using, do not let it heat. “04”———LDPE(低密度聚乙烯) 保鲜膜、塑料膜等都是这种材质。耐热性不强，通常，合格的PE保鲜膜在温度超过110℃时会出现热熔现象，会留下一些人体无法分解的塑料制剂。并且，用保鲜膜包裹食物加热，食物中的油脂很容易将保鲜膜中的有害物质溶解出来。因此，食物入微波炉，先要取下包裹着的保鲜膜。 05”———PP(聚丙烯) 微波炉餐盒采用这种材质制成，耐130℃高温，透明度差，这是唯一可以放进微波炉的塑料盒，在小心清洁后可重复使用。需要特别注意的是，一些微波炉餐盒，盒体以05号PP制造，但盒盖却以06号PS(聚苯乙烯))制造，PS透明度好，但不耐高温，所以不能与盒体一并放进微波炉。为保险起见，容器放入微波炉前，先把盖子取下。 “06”———PS(聚苯乙烯) 这是用于制造碗装泡面盒、发泡快餐盒的材质。又耐热又抗寒，但不能放进微波炉中，以免因温度过高而释出化学物。并且不能用于盛装强酸(如柳橙汁)、强碱性物质，因为会分解出对人体不好的聚苯乙烯。因此，您要尽量避免用快餐盒打包滚烫的食物。 “07”———PC及其他类PC是被大量使用的一种材料，尤其多用于制造奶瓶、太空杯等。近年来，奶瓶因为含有双酚A而备受争议。专家指出，理论上，只要在制作PC的过程中，双酚A百分百转化成塑料结构，便表示制品完全没有双酚A，更谈不上释出。只是，若有小量双酚A没有转化成PC的塑料结构，则可能会释出而进入食物或饮品中。PC中残留的双酚A，温度愈高，释放愈多，速度也愈快。因此，不应以PC水瓶盛热水。如果容器有任何摔伤或破损，建议停止使用，因为塑料制品表面如果有细微的坑纹，容易藏细菌。避免反复使用已经老化的塑料器具。

塑料瓶底数字与安全性无关

传言，有些塑料瓶是安全的，可反复使用，而看一个塑料瓶反复用安不安全，可通过瓶子底部的标识识别。很多饮料瓶、矿泉水瓶等底部都有一个带箭头的三角形标志，三角形里有一个数字，如果数字在“05”或以上就可以循环再用，而且数字愈大愈安全。 “一般矿泉水瓶子底部标示01；一般泡茶的塑料耐热杯底部标示05；奶精瓶子底部标示02；优酪乳瓶子底部标示02……”这种说法，有人赞同，有人则怀疑其真实度。在部分瓶子底部发现有数字标示，如宝生园550G装蜂蜜瓶底部标示“02”。不过，很多饮料瓶底部都没有任何标示，像康师傅500ML鲜的每日C、可口可乐450ML美丽果汁饮料等。中国塑协塑料再生利用专业委员会副会长董金狮告诉记者，塑料瓶底三角形所标注数字与该瓶子“是否安全”没关系。三角形符号是一个塑料回收标志。三角形里边有1～7的数字，每一个数字都代表不同的材料，如果制品是由几种不同材料制成的，则标示的是制品的主要的、基本的材料。在我国，塑料制品标注回收标志是非强制性的，一些正规的大品牌企业为了方便塑料制品回收，近来纷纷开始标注回收标志。专家认为，虽然这一标志主要是为了便于回收再利用，但消费者也可以通过这个标识知道所使用的塑料制品是由什么材质制成的，应该在什么环境下使用。

塑料瓶安全性选择

塑料瓶的瓶体与盖的密封性，水蒸汽渗透性。密封性与水蒸气渗透性是塑料瓶的两个重要技术指标,它们对塑料瓶里盛装的产品的稳定性起至关重要的影响。无论采用何种原料来制做塑料瓶首先必须符合无毒、无异味等要求。由于可供选用的主原料品种繁多.这就需要对原料的综合性能加以选用。一般片剂选用高密度聚乙烯、聚丙烯、如需要透明度可选用聚酯瓶（PET）。如需要阻隔性能更高,且阻光、不透明、则选用棕色PET塑料瓶、液体剂型药品一般选用聚丙烯或聚酯瓶作为主原料,目前国内的营养保健品和食品的塑料瓶主要是用PET料或HDPE料做、瓶盖则用PP料。塑料瓶产品的质量标准,可以从生产厂的产品质量标准中可以分析判断产品质量的优劣。用于包装药品、营养保健品、食品饮品绝对不能使用回收料，卫生部颁发的《食品用塑料制品及原材料卫生管理办法》对此有明确的规定：“凡加工塑料食具、容器、食品包装材料，不得使用回收塑料瓶”。质量保证体系，对供应商进行审计已成为采购塑料瓶必不可少的重要环节。通过审计可对生产厂的软、硬件设施、技术设备、质量综合水平作出全面正确评估。

Plastic bottle frightened the mother glass bottle has become a popular commodity

近来，欧盟禁止生产含双酚A的塑料奶瓶的消息，让我市很多年轻妈妈慌了神，很多人开始到处买玻璃奶瓶，不少孕婴店、超市几乎卖到断货。 Yesterday morning, the reporter came near Friendship Square, a pregnancy and infant store and see shelves stocked with a variety of bottle, glass bottle is not. When reporters selected at random in a plastic bottle looked a waiter immediately stepped forward, said: "Rest assured, this bottle is definitely qualified, did not affect the child." But the waiter also admitted that glass bottle increase in sales: "most parents buy a plastic bottle, and now many of them to buy a glass bottle, "she said:" We have contacted the supplier increased volume in the glass bottle, or simply not enough to sell. "in Xi'an Road, a prime location close to the vicinity of several large supermarkets reporter saw the same small proportion of the number of glass bottles on the shelves. "Sold out" a supermarket attendant explained. A young lady is to buy glass bottles, told reporters his son is now almost one year old, previously afraid of glass products fragile dangerous so has been using plastic bottles, you can now listen to the news that bisphenol A may be bad for children on quickly over the change. In addition to infants and pregnant stores, supermarkets, redemption, and more young mothers to seek to online purchase. The reporter saw in a glass bottle of a well-known brand bottle vendors off the goods. Search for "bottle" in a well-known mall site, the reporter randomly selected a shop to enter and found several glass bottle stock column shows "This product is temporarily sold out". The reporters found that not only nobody cares about plastic bottles, plastic children's products sales were also affected, even the plastic material of daily necessities have been implicated. Specialty stores in a chain of baby products, the sales staff told reporters that the old suction cups, children's kettle, cutlery and other sales. Left out at the same time in plastic children's products, space cup, crisper, plastic bags and other plastic materials, daily necessities, seriously implicated. Marked production of materials in the supermarket, before the popular "Space Cup is the PC, in addition to, plastic lunch boxes, water bottles, etc. Most also the PC manufacturer. Today, very few consumers purchase these products. Crisper the promotion of a brand is hard to introduce their products use PP material manufacture, safe to use. "But still no one to buy. The reporter interviewed a number of consumers, found that many people even cling film, disposable plastic bags and other products are full of fear. Many people believe that, although some plastic products claim "does not contain bisphenol A," but because of the chemicals, how many contain other chemical components, or less better.实习生付洁妮记者孟楠张玮炜【友情提示】 既然我们在生活中不可避免地要使用到塑料制品，那么如何正确使用塑料制品保证安全？ A dedicated microwave plastic containers should be translucent, without color, high-temperature products.微波炉加热含水量较大的食物，可用PP塑料容器；加热含油较多的菜肴、食物，则应选用耐温性更强的PC容器。 2 plastic bottles, containers will become soft when exposed to heat, deformation, do not use this type of container installed hot food. This type of plastic at high temperatures may decompose, releasing harmful ingredients. Some people have hot water, hot tea loaded bottles of mineral water or beverage bottles, this approach has certain dangers. With plastic wrap food heating, food grease is very easy to harmful substances dissolved in the plastic wrap. Therefore, the food before into the microwave oven to remove the cling film wrapped. 4 is best not to long-term use of plastic products stored fatty foods. If you use plastic products to serve food, it is best to choose colorless plastics.

塑料挤胀成型工艺知识简介

目前，全世界80％以上的塑料制品是通过挤出和注塑成型的，压延、吹塑、滚塑等不断出现的塑料加工和成型方法在增加塑料制品产量的同时，也在不断完善和扩展塑料制品的种类及其应用。日益成熟和完善的塑料制品加工方法出各种新型、功能性塑料制件，并推动塑料加工工业不断向节能、省材和高效的方法发展。虽然目前的塑料成型方法几乎可以加工各种形状的塑料制品，但是对于一些具有特殊形状的制品，采用现有的方法可能就不是最经济有效的，如管件中的三通、四通以及一些异型制品等。尤其在生产批量较小的情况下，昂贵的模具费用将由少量的制作来分担，所以注塑方法在生产此类零件时有一定的困难，更何况目前对于细长、端面尺寸相差较大或膨胀节等口小腹大类制件，甚至无法用注塑及一般塑料成型方法来加工。塑料挤胀成型就是在这种趋势下应运而生的。通过与常规的塑料成型加工方法的比较，可以看出挤胀成型在用于塑料加工成型方面具有以下优点：1．成型设备结构相对简单，设备投资低；2．被加工材料不产生相变，而且成型过程通常可以在较低温度下进行，能源少；3．适于生产断面尺寸相差较大的制品，对制品的断面尺寸适应性强；4．控制系统比较简单，工艺控制十分灵活，通过控制挤压行程，利用同一副模具，有可能得到不同尺寸的制品；5．能充分利用挤出制型坯的高生产率和低成本；6．在生产批量较小的情况下，能大幅度降低生产成本等等。北京化工大学塑料机械及塑料工程研究所目前已经进行了大量的实验研究，成功制备了各种形状的制品，目前该技术已经取得国家发明专利授权，拥有自主的知识产权。希望与有志于开发这种新技术的厂家共同合作，争取早日将塑料挤胀成型技术实现产业化。