The biaxially stretched nylon film is referred to as BOPA film, and the main raw material for production is polycaprolactam (nylon 6). At present, BOPA film is used in the production of various composite packaging materials, with excellent toughness and puncture resistance, good transparency and gloss, excellent odor barrier, excellent oil resistance, heat resistance, non-toxic and harmless. And other excellent characteristics. In order to reduce production costs and meet environmental requirements, packaging materials with high barrier properties such as PDVC film and EVOH film are gradually being replaced by BOPA film.

China's plastic film industry has grown at a steady rate. With the continuous improvement of the living standards of our country, the requirements for plastic packaging films in the fields of food, medicine and agriculture are getting higher and higher, and plastic packaging materials are developing in the direction of high performance, multi-function and environmental protection. China's plastic film traditional 70% used as packaging materials, and plastic film accounts for 46% of the total plastic packaging materials. From 2010 to 2016, China's plastic film production increased from 7.99 million tons to 14.19 million tons, with an average annual compound growth rate of 10%. At present, single-layer polymer films have been unable to meet the requirements of versatility. Multi-layer composite films with different plastic materials have become the development trend of plastic products in the future. BOPA film has broad development prospects as the upstream material of multilayer composite film, and it is expected to maintain a growth rate of 10% in the next five years.

The apparent consumption of BOPA showed a positive growth. According to relevant data, the apparent consumption of BOPA in 2015 was 60,300 tons, a year-on-year increase of 5.24%. After 2012, apparent consumption has seen positive growth again.

The number of BOPA exports has also increased continuously, reaching 18,500 tons in 2015, a year-on-year growth rate of 4.52%. The growth rate of BOPA capacity slowed down and the operating rate of the industry rebounded. BOPA film production process synchronous method and asynchronous method. The synchronous process is complex, the product structure is uniform, the quality is superior, and it is applied to the middle and high-end market; the asynchronous film is simple in process and suitable for the middle and low-end market. There are more than 10 BOPA film companies in China, most of which are asynchronous, facing the low-end market and in a state of oversupply. Only Xiamen Changsu and Zhangzhou Mingzhu have synchronous production lines with obvious competitive advantages.

Especially after the shut down of 4,500 tons of synchronous production capacity of Unijico (China), the supply and demand situation of high-end products is tightening. Since 2011, China's BOPA capacity has climbed from 96,000 tons to 110,000 tons in 2016, with an average annual compound growth rate of 2.3%. BOPA production increased from 73,900 tons in 2011 to 85,000 tons in 2016. In particular, due to the increase in product prices in 2016, BOPA production increased rapidly and the operating rate of the industry rebounded significantly. There are no new production enterprises in the short-term industry.

The price of BOPA film has risen and the gross profit has rebounded. Since the end of 2015, BOPA prices have risen from the 25,000 yuan / ton platform area to 40,000 yuan / ton. On the one hand, the price increase was due to insufficient supply due to the closure of the 4,500-tonne synchronous production capacity of the industry's benchmarking company, Uniji (China). On the other hand, since the high point in early 2011, BOPA prices have been falling, and small-scale production capacity in the industry is difficult to make profits, and has gradually withdrawn. The BOPA production technology is difficult, and there is no new capacity in the short-term industry. At the same time, the price of PA6, the main raw material, is also rising. These factors have combined to make the BOPA price increase tremendously in a short period of time.

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