Production and recycling of the hottest food packa

Production and recycling of food packaging products in Japan

in August 2006, several people led by the author went to Japan Central Chemical Corporation to visit, study and exchange. Japan Central Chemical Co., Ltd. impressed the audience with its strict production process and high-quality products

I. profile of Japan Central Chemical Co., Ltd.

since its establishment in 1957, the central chemical Zhushi association has carried out business around the basic policies of environmental protection, and is committed to the production and sales of various plastic food packaging containers based on environmental protection containers, while using recycled waste food packaging containers to make recycled products. At present, there are 12 factories and 16 business offices in Japan. By the end of 2005, Sinochem's total domestic sales in Japan had reached 89.35 billion yen, with 3213 employees. It is estimated that the total sales will reach 100billion yen by the end of 2006 and 120billion yen by the end of 2007

the packaging products produced by Sinochem are economical, hygienic, safe and popular. In order to ensure the hygiene and safety of food packaging products, Sinochem Japan strictly controls the selection of raw materials, including mineral raw materials such as talc powder, which must be tested and qualified before purchase and use, so as to prevent some toxic substances such as heavy metals from exceeding the standard. In addition, Sinochem Japan has carried out the recycling of waste plastic food packaging since the establishment of the factory. At that time, these recycling work was not required by the government, but the Sinochem enterprises were self disciplined in line with professional ethics

Mr. Watanabe, President of Japan's Central Chemical Co., Ltd., also mentioned that in the early stage of production, packaging enterprises generally want to buy cheap raw materials and are not responsible for recycling, so as to reduce costs and obtain greater profit space. However, this can only obtain short-term benefits, because the decline of safety, health and quality, and environmental pollution ultimately affect the long-term survival of the production enterprises themselves. Especially today, when the world is pursuing the construction of a recycling society, it is of great significance to carry out the appropriate treatment of plastic packaging containers after use and the construction of recycling systems

when it comes to the inspection and testing of food packaging products, Mr. Watanabe believes that only taking some products to the inspection and testing department for testing and then getting the test report can not fully explain the problem. The most important thing is that enterprises should have professional ethics, ensure quality at all times in the production process, and monitor enterprises by sampling and testing by a third party. Sinochem enterprises have always followed this principle and strictly required themselves. He very much hopes that Chinese counterparts and consumers will have the opportunity to understand Sinochem products and exchange needed goods in product production, quality assurance, recycling, sales and use

looking back on the development history of food packaging in Japan, President Watanabe lamented that in the early stage of product production, Sinochem Japan blindly pursued how beautiful the appearance of the product was, and the quality requirements for raw materials were reduced. Some quality problems appeared in the product, which caused people's panic about food packaging. This phenomenon is a great blow to enterprises, because it is not easy to win the trust of the people again

II. Japan's environmental protection policies, regulations and waste recycling and treatment status

2.1 Japan's waste status and treatment methods

Japan's waste was originally classified and recycled, and the remaining waste was landfilled. However, due to the current situation of land shortage in Japan, it is now found that the best way is to incinerate garbage for power generation, turn waste into treasure, and recycle

Japan usually divides garbage into general household garbage and industrial garbage, and industrial garbage is also divided into non-medical garbage and medical garbage. Container and packaging waste accounts for about 60% of urban household waste in Japan. Therefore, the Japanese government formulated the law on promoting the classified recycling of containers and packaging in April, 1997. Its purpose was to reduce such waste and promote its recycling. At that time, it was only to force larger enterprises to recycle glass bottles and PET bottles. In December 2000, Japan added paper and plastic containers and packaging to the effective provisions on the original basis, and the scope of implementation was also extended to small and medium-sized enterprises

in the early 1980s, incineration accounted for 60% of garbage disposal methods in Japan 4%, landfill accounting for 37 1%, while by 2000, direct landfill accounted for only 5 9%. Incineration has accounted for the benefits of doing so. In addition to extending the service life, it can also reduce the test error 77 4%, and the rest is recycled or utilized. The decline in the proportion of landfilling is mainly due to the limited land area of Japan, and landfilling requires a lot of land. As of 2000, there were 1715 incineration facilities in Japan, with a daily treatment capacity of 201 775t, 65% of which are equipped with waste heat recovery facilities, and the total installed capacity is 1 192 MW。 Among them, an incinerator with a processing capacity of 1000t/D was built in Kyoto, Japan in 2000, with a power generation capacity of 22KW. The increase of waste incineration treatment capacity and the investment in incineration facilities increased accordingly. When we asked about the source of investment in this part, Mr. Jiubao told us that according to the financial situation of local governments, the national government invested 25% or 50%, and the other 75% or 50% was invested by local governments. The capital construction cost and operation cost of incineration treatment of domestic waste are high, and the energy recovery in the incineration process can be used to reduce the cost

the development of incineration power generation technology in Japan is quite rapid. The famous environmental protection enterprises in Japan, represented by Chuanqi heavy industry and Mitsubishi Heavy Industry, are committed to the research of high-efficiency power generation and energy recovery, such as the use of low air ratio combustion, multi-stage extraction, high temperature and high pressure, external fuel plus steam overheating and heating, and many other technologies have been actually applied

Japan has the strictest control over dioxins produced by waste incineration. The main control measures include: maintain a sufficiently high decomposition temperature, generally between 850 ℃ ~ 1100 ℃, and the residence time of flue gas in the incinerator is more than 2S; Spray adsorbents such as activated carbon; Bag filter is used to collect fine particles

2.2 Japanese laws and regulations to promote the development of circular economy

Japan's legal system to promote the development of circular economy is divided into three levels: the basic law, the comprehensive law and the special law. The basic law is the basic law for promoting a circular society (promulgated in June 2000); The comprehensive law includes the waste disposal law (promulgated in 1970, revised many times, and the latest revision in 2000) and the promotion law of effective utilization of resources (promulgated in 1991, and the latest revision in 2000); Special laws include: ① classified collection and recycling law of containers and packaging materials (promulgated in 1995 and latest revised in 2000); ② Circulation law of special household machines (promulgated in 1998 and revised twice in 2000); ③ Construction material recycling law (issued in 1999 and revised twice in 2000); ④ Recyclable food resource recycling law (promulgated in 2000); ⑤ Law on special measures for the proper disposal of PCB wastes (promulgated in 2001)

Japanese regulations stipulate that different subjects involved in the container and packaging recycling system bear different responsibilities. Consumers are the emitters of scattered garbage, so they should reduce the generation of garbage through the appropriate use of containers and packaging; Enterprises (including producers and users) should share the recycling, and enterprises can also entrust to the designated receiving units, such as the Japan container and Packaging Association for recycling and utilization; The municipal government department must formulate a classified collection plan and take necessary measures to collect containers and packaging waste in this area

2.3 Japanese recycling concept and related practice

the proportion of resource recycling of waste treatment in Japan is increasing. Fundamentally speaking, the basic idea of urban waste treatment has changed. Considering the environmental impact and reducing the excessive consumption of natural resources, with emphasis on the "3R" concept, producers have changed the traditional open-loop mode of "raw materials - industrial production - use - waste" into a closed-loop system of repeated circulation and flow of materials of "resources - products - consumption - renewable resources", so that the whole economic system and the process of production and consumption basically do not produce or only produce a small amount of waste, To build a circular society

when recycling waste plastics in Japan, the cost of recycling waste plastic packaging containers in Sinochem recycling workshop is 9100 yuan/T, and the sales of recycled particles caused by recycling is 2100 yuan/T, so in fact, there is a loss of 7000 yuan/T on recycled plastic containers. The average recycling volume of plastic containers of Sinochem in recent years is 4000t/year, so Sinochem Corporation will subsidize nearly 28million yuan in recycling treatment every year

in comparison, the awareness of waste classification and recycling and waste treatment system in our country are still relatively backward. Although we have a vast territory and abundant resources, many cities have also stepped into the garbage siege. Fortunately, the state, local governments and scientific research departments have begun to pay attention to the classification, recycling and regeneration of garbage. More and more people have realized that it is impossible to completely solve the garbage problem without classified collection and treatment of garbage. But we still have a long way to go. I hope we can learn from some advanced foreign experience and try to avoid detours

III. The enterprise culture, product production and recycling process of the central chemical zhushihui

3.1 Sinochem's enterprise culture and environmental protection concept Sinochem put forward three recycling principles for the recycling of used food packaging containers, namely, strictly abiding by safety and sanitation, pursuing economic benefits and building a recycling recycling recycling system. At the same time, in order to realize the three principles, a four in one recycling system has been established, which is mainly carried out by consumers, wholesalers, administrators and manufacturers to recycle and reduce the volume of plastic packaging containers after use, turn them into environmental protection products through physical recycling, turn them into crude oil through chemical recycling, and turn thermal energy recovery into thermal energy

in the exhibition hall of environmental protection products and technology of China chemical plant, the production flow charts of new products, degraded products and various recycled products of China chemical enterprise are arranged on the walls around. The schematic flow chart is designed with pictures and texts. Even if you don't understand Japanese, you will understand it through these unique picture designs and combinations. Corresponding to these pictures, the following is the display desk, on which are stored the products introduced in the pictures on the wall, such as environmental protection chairs, environmental protection floor tiles, environmental protection shopping baskets, environmental protection lacquerware, environmental protection shelves, environmental protection wood, etc. Including raw materials used in the process of product processing, processed intermediates, final products and product profiles, etc

looking at all the pictures and objects in the exhibition hall and listening to the president's explanation, it seems that we have experienced transcendence for the first time in Japan. Because environmental protection knows no borders, because all human beings in the world have only one mother - the earth

reinstall the installation plate equipped by our company once. The plastic packaging product exhibition hall with an area of more than 200 square meters is like a well-designed and complete medium-sized supermarket, with all kinds of colorful lunch boxes, bowls and trays, complete data on strength performance and optical performance, etc., containing mouth watering food, neatly placed in the freezer. These are all simulated foods, and the freezer is also simulated. Only these various plastic packaging boxes, bowls and dishes produced by Sinochem enterprises are real

on the same floor, there is also a health analysis laboratory of more than 200 square meters, just like a testing and Analysis Center. There are atomic absorption analyzers, gas chromatographs, liquid chromatographs, element analyzers, and gravity sedimentation testers that test the impact resistance of materials, and so on. According to the person in charge of the health analysis laboratory, the laboratory is mainly to ensure that Sinochem's own products or