currently more and more plastic products have gradually replaced some of the other products in the city. We can see plastic products in supermarket or trading market everywhere.As the main plastic extruding machines, nowadays plastic sheet extruder machine has developed into a equipment with environmental protection value by reason of the promotion of machinery in recent years. It has a certain meaning for the protection of city and surrounding ecological development. Plastic sheet is mainly used to make disposable plastic cup,dishes,bowls,tray and box. It is widely applied to the packaging fields like food,vegetable,fruit,drinks,dairy food and industrial parts and cup making machine and fast food box making machine are the typical machines.With the development of the domestic demand, plastic packaging sheet application is becoming more and more widely,consumption is increaing year by year.As the country's emphasis on environmental protection,Environmental degradation sheet production line which adapt to the production has been able to successfully supply all kinds of degradation sheet to market.Nanometer sheet,made of Nano-plastic become another focus of attention also a new selling point of manufacturer.