There is a gap in the quality of plastic products

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There is a gap between the quality of plastic products in China and foreign countries

according to the analysis of professionals in China's plastic processing industry, there is still a certain gap between China's plastic products and developed countries in many aspects, such as product structure, process technology, equipment and product quality, which is specifically reflected in the following aspects:

there are more medium and low-grade products, less high-tech products and high value-added products, and some products rely on imports. The development of electronic universal experimental machines in the plastic industry involves many fields and departments. In recent ten years, various departments have developed plastic products processing one after another, but the macro guidance is not enough. At the same time, the development of related industries is relatively lagging behind, the market development is not enough, and the application field is not smooth, resulting in the slow development of high-tech products, the overlapping of medium and low-grade products, and the blind development

1. Among the products with general resin as raw material, the proportion of medium and low-grade products is high, and the proportion of high-tech and high value-added products is low. For example, the proportion of soft PVC products such as film, artificial leather and footwear produced from PVC resin still accounts for more than 50%. Among all kinds of products with PP resin as raw material, labor-intensive low value woven products (mainly woven bags) account for the first place, while polypropylene thin products with high technical content account for a low proportion

2. General engineering plastic products with high technical content and high added value account for a low proportion of the total plastic products, while special engineering plastic products account for a lower proportion

3. High grade or door missing plastic products still need to be imported. According to customs statistics, China still needs to import more than 1 million tons of plastic products every year. 20% of PVC leather and 30% of PU leather used in China are imported goods that cannot be produced in China

The backwardness of process technology and equipment directly affects the level of processing technology and product quality. At present, the equipment level of wholly-owned enterprises, joint ventures (accounting for about 15% of enterprises in the whole industry) and some enterprise groups is relatively high, mainly imported equipment. In addition, some high-tech products, such as double wall corrugated pipes, PVC foam plates, large hollow containers above 200L and other production lines, as well as large precision injection machine base 4. Operating performance, control system functions: This is all imported. In recent years, the sales volume of domestic plastic machinery is about 5billion ~ 6billion yuan, and the imported plastic machinery is about 100million US dollars. In terms of quantity, the imported equipment accounts for about 20%. Since the reform and opening up, domestic equipment has made great progress in product variety, quality, complete set manufacturing and supply capacity, but compared with developed countries, domestic equipment still has a large gap in control system, capacity, speed, accuracy and complete set

compared with developed countries, China's mold manufacturing accuracy is still one order of magnitude lower, the manufacturing cycle is 2 ~ 5 times longer, the mold life is short, the surface quality is poor, and the degree of standardization is low. Computer aided design and manufacturing (CAD/CAM) has just started, so most of the medium and high-end molds rely on imports

there is a certain gap in the quality of plastic products in China compared with foreign countries. Due to different hair quality, the average service life of agricultural film is only one year (2-3 years or longer in industrial developed countries), and the drip free agricultural film can only last for 2-3 months, while foreign countries generally

6 months or more; Less varieties of packaging materials, poor barrier, short shelf life; There is also a certain gap in the durability and supporting capacity of plastic pipes, profiles for doors and windows and other building plastics; Injection products have poor surface finish and large shrinkage; Engineering plastics are small in quantity and variety

repeated construction leads to competitive price reduction of products and a substantial decline in economic benefits. Woven bags, wallpapers, PVD artificial leather and other medium and low-end products have low operating rate and a high proportion of loss making enterprises due to repeated crossover. In recent years, the newly developed Bo PP film large-scale production line has been introduced too much and too aggressively, resulting in a sharp drop in price; Rigid PVC foamed board has not yet opened up the market, and more than 30 production lines have been introduced, resulting in a serious shortage of operating rate

The friction coefficient of plastic film is a major goal

the gap between coastal areas and the mainland has increased, and the distribution of raw material production and processing areas does not match. For example, the ethylene production capacity in Northeast China accounts for 30% of the country, while the processing capacity only accounts for 5.3% of the country; The ethylene production capacity of South China accounts for 11.5% of the country, while the processing capacity accounts for 45.5% of the country

domestic resin supply is insufficient in quantity, quality and variety. Since the reform and opening up, although the output, quality and variety of domestic plastic resins have been improved to a certain extent, the import volume has increased rapidly. By 1998, the import volume (10.52 million tons) has exceeded the domestic volume; Evo h, m BS, ABS and other resins are basically all imported; Although Bo PP film special materials and other products have been developed in China, 70% of them have to be imported from abroad due to unstable quality

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