EVA resin development and market forecast

EVA (ethylene - vinyl acetate copolymer) according to which the VA (vinyl) content can be divided into three categories: VA content of 5% to 40%, known as EVA resin, mainly used for the modification of polyethylene , Wire and cable manufacturing materials, thin films and other products forming or mixture, and so on; VA content of 40% to 70%, known as EVA elastomers, mainly for rubber and elastomer modified PVC, etc.; VA content in 70% ~ 95%, usually made of latex, known as the VAE emulsion is mainly used for coatings and adhesives, paint.

EVA resins widely used

EVA film used in the resin content of VA is less than 20%. EVA film with high transparency, impact toughness, good thermal stability, with the physical nature of sound, air permeability, low temperature and low shrinkage. As a function of agricultural greenhouse film, and its transparency, good insulation, anti-aging, anti-droplet is the preferred base material of plastic sheeting. In addition, EVA can also be used as packaging film, medical film, layer laminated film and the casting.

In recent years, saponification or part of the saponification of ethylene - vinyl resin copolymer (EVAL) in the packaging industry has been developing extremely rapidly, its outstanding advantage is an excellent gas barrier, and can greatly improve the packaging of Hong Bao, Prevent access to oxygen, increase the shelf life of food. EVAL resins can be hard in a large number of packaging and the use of flexible packaging, packaging can also be used solvents, pesticides and chemicals.

EVA foam products used by the VA resin content of 15% to 30%. This type of material has a soft, elastic, shock absorption, such as chemical-resistant properties, are widely used in high-end travel shoes, climbing shoes, slippers, the soles of sandals, as well as noise barriers, gymnastics mats, toys and sealing profiles.

Hot-melt adhesives used in the VA content of 25% to 40% of the EVA resin. EVA due to the solvent-free hot melt adhesive, there is no environmental pollution and the risk of flammable, but also high-speed automated production line operation, which is widely used in wireless book binding, packaging, furniture Edge, automotive and home appliance assembly, shoe-making , And the carpet coated metal coating on the decay. The adhesive curing time is short, no need to dry and easy to store and transport.

Wire and cable used in the VA content of 12% to 24% of the EVA resin. EVA for wire and cable insulation, and so has the advantage of filling materials can absorb a great deal and not rattle, and no loss of mechanical properties, cross-linked easily. Typical in this regard, including in the field of application of heat shrinkable insulator, semiconductor materials and fire-retardant shield insulation material.

In addition, EVA resin in the ink, bags, bottles cushion cover, out of a variety of hose / pipe areas such as hardware is also a wide range of applications.

EVA resin insufficient domestic production to be

At present, the world's EVA resin production in t more than 1,000,000, of which the United States, about 600,000 t, Japan 150,000 t, Germany 140,000 t.

EVA in China the production and application of a late start, has been completed and put into commercial operation, only the Beijing Organic Chemical Plant 40,000 t / a EVA device, producing 14 brands of products, VA content of 5% to 18% for Production of plastic sheeting and foam materials. Yanshan Petrochemical there are 200,000 t / a LDPE plant, EVA5 annual production of about 10,000 t, can produce 4 grades, VA content of 4% to 9%, but no amount of goods. Shanghai Petrochemical and Daqing Petrochemical LDPE production device and EVA, but the VA because of shortage of raw materials, as well as LDPE market demand, not the production of EVA. This year's production of the new Jan - Pakistan 400,000 t / a LDPE plant, a 200,000 t / a production line to the middle of the VA content up to 30% of EVA products, Sinopec recent DaQing production of 200,000 t / a unit of LDPE, VA content can be in the middle and 4% ~ 9% of EVA products, these products are expected to put on the market, will greatly improve our EVA market supply structure.

Despite the late start of China's market, EVA, but because of the excellent processing performance products, widely used for special needs in the area in recent years is the rapid growth in consumption. EVA resin in China in 2000 apparent consumption of 258,000 t, in 2003 soared to 398,000 t, 2004 years up to 490,000 t. EVA resin in 2004 imports 450,000 t, up 26.8 percent. In the next few years, EVA resin demand will be about 9% of the rate of growth in demand in 2006 is expected to reach about 580,000 t, in 2010 will reach 820,000 t.

EVA resin, mainly from China's neighboring countries and regions imported from China Taiwan's total import volume of imports of more than 35%, accounting for 20% of South Korea, Japan accounted for 5% from Singapore and the United States also imports large. From the structure of imports, largely in the VA content of 15% to 30% of the products, mainly used in the production of Material and so on.

In the next few years, EVA resin will be in the following areas of rapid development:

China is a large agricultural country as a result of plastic sheeting, so the next few years, EVA resin in this area will be increased market share is expected in 2006 will be in the area of the EVA resin consumption of around 75,000 t.

China's shoe shoe production is a big country in recent years because of Taiwan, Hong Kong, as well as some of the world's well-known brand footwear industry shift to the mainland of China for the Material EVA resin consumption increased considerably. Pairs of shoes per 100g EVA resin with total expected demand in 2006 will reach more than 280,000 t, but shoes with EVA in the field of relatively mature, stable, the proportion of total demand will decline.

Hot-melt adhesives in our country is that there is great potential market applications, with the printing, furniture, Xiege the further development of the industry, and its consumption will gradually increase, EVA consumption in 2006 will be about 50,000 t.

In addition, EVA resin in the future in the wire and cable, toys, ink, bags and so on in other areas of consumption will increase EVA consumption in 2006 will be about 55,000 t.

Industry yet to mature

EVA resin in China is the shortage of synthetic materials, with the EVA downstream industries, the contradiction between supply and demand will be more obvious each day. With CNOOC Shell EVA devices put into operation, as well as the installation of a new round of LDPE Capacity Expansion of market demand for EVA, EVA believe that the future of China's imports from Supply will be gradual. But we have to see, EVA market is still immature, high-cost, high-price market has become a major bottleneck. Therefore, brand diversification and competitive pricing will promote the healthy development of China's EVA industry.