From the perspective of several large domestic winding membrane manufacturers, the production technology of winding membrane has not been significantly developed in recent years, but the average thickness of winding membrane has been reduced from 23 μ m at the beginning to 17 μ m at present, and has a trend of development to 15 μ m recently. The other force in the field of winding film is the manufacturer using domestic small equipment, which accounts for 70% of the market share. Although the quality of the membrane can not be compared with the winding membrane produced by large factories, its price is low, occupying the vast low-end user market.
The wrapping film and the fresh-keeping film are both transparent in appearance, and they are also used for the packaging of commodities and play the role of wrapping. Wrapping film is different from fresh-keeping film, which is a kind of plastic packaging product. It is usually made of ethylene by polymerization reaction. It is mainly used in microwave food heating, refrigerator food preservation, fresh and cooked food packaging and other occasions. It is widely used in family life, supermarket, hotel and industrial food packaging.
Generally speaking, compared with CPP, OPP and other industries, winding film is relatively simple in technology, relatively small in investment and low in quality requirements of customers, which makes it easier for domestic small line equipment manufacturers and small line film factories to develop. Generally speaking, the development prospect of winding film is broad.
