Development of plastic packaging materials in Chin

2022-07-30
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The development of plastic packaging materials in China during the Tenth Five Year Plan period (I)

they believe that the pollution from plastic factories came.

plastic packaging is divided into bags and containers according to the product form. According to the packaging products, it mainly includes films, sheets, containers, bags, foamed plastics, etc. China's packaging film accounts for about 30% ~ 40% of plastic packaging materials, and its consumption ranks first among all kinds of products. At present, China has introduced 65 BOPP film production lines, with an annual production capacity of about 400000 tons. The production equipment has reached the level of foreign countries in the 1990s, and the maximum annual production capacity of a single line is 15000 tons. Plastic woven bags are also a major category of domestic plastic products and packaging products. In recent years, the highest annual output has been close to 6billion, mainly polypropylene woven bags. Plastic woven bags are also the fist foreign exchange earning products in China's plastic products, with the largest annual export volume of 800million. According to incomplete statistics, there are nearly 4000 plastic packaging manufacturers in China, with an annual output of about 2.5 million tons. Among them, the output of packaging film is the largest, about 880000 tons; The second is packaging containers, with an output of 605000 tons

however, compared with the world advanced level, there is still a big gap between China's plastic packaging materials cured after a few 10 seconds, mainly due to the unreasonable product structure and the lack of functional film varieties. In China, plastic packaging materials are mainly film, but at present, the repeated construction of biaxial tensile film is serious, and the proportion of coextrusion film is relatively small, resulting in the unreasonable structure of film varieties; After the overall level of technical equipment fell behind and the subsidy declined, the company also cooperated with Nippon to produce pure flavor polyurethane varnish and white paint suitable for children's products, with a low degree of industrialization; The scale of the enterprise is small, there are too many medium and low-grade products, the product technology content is low, and it is lack of competitiveness; The contradiction between recycling management and recycling technology of plastic packaging waste and environmental protection is becoming more and more prominent

during the Tenth Five Year Plan period, plastic packaging materials will change from extensive to intensive, and develop in the direction of energy conservation, consumption reduction, environmental protection and multi-function. Among them, the film will be developed in the direction of compounding to make various packaging films with different properties and functions; Woven products will be developed to large and heavy-duty packaging bags and low gram weight and low size packaging bags; Hollow containers will develop towards thin wall. The focus of development is: packaging film and substrate, packaging sheet and thin-wall container, and constantly develop composite film and functional film to meet the needs of food, beverage, grain, chemical industry, medicine and detergent packaging; Expand the application fields of woven bags, turnover boxes, corrugated boxes and foam materials to meet the needs of chemical fertilizers, pesticides, cement, aquatic products, geotechnical and water conservancy projects; Transform the plastic box process to stabilize the rope and belt market

the production of polyethylene and polypropylene single-layer films, color packaging bags, shopping bags and garbage bags should be done well to improve quality, reduce costs and expand exports. At the same time, we will develop food, fruit and vegetable preservation and freezing packaging films and food packaging films, focusing on the development of heat shrinkable films, winding films, chlorinated polyethylene and chlorinated polypropylene casting films

composite film the main application direction of composite film is food and beverage packaging, which represents the development trend of food and packaging industry. At present, there are many kinds of composite films, some of which are resistant to cooking, baking (1350 ℃) and low temperature freezing (- 30 ℃ ~- 400 ℃), and have the protective functions of gas separation (O2, CO2), moisture resistance, shading, etc. The urgent task for the production of composite film in China is to develop new composite packaging materials with gas resistance, high temperature resistance, freezing resistance, long storage life, quality and freshness, and functional composite materials needed in some fields. The main varieties are heat-resistant composite films, such as gas barrier polypropylene, chlorinated polyethylene and polyester coated PVDC. PVDC coated/polypropylene composite films are developed for microwave heating food; Develop selective permeable film for packaging natural dairy products with oxygen resistance; Develop a new type of high permeability material - evaporated silicon film, which is a new product of the third generation composite film, also known as soft glass. It has the advantages of good gas permeability, moisture resistance, light shielding, UV protection, transparency and so on

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