Because the air pressure of the automatic moulding machine is usually positive pressure (0.4-0.8MP), the cupping process is called positive pressure hot forming, and the moulds used in the plastic positive pressure moulding process are called "positive pressure plastic hot forming mould".

3. decoration

Decoration in cup making machine is to adopt printing or labeling method to beautify the appearance of plastic cups.

At present, the positive pressure hot forming die for producing "disposable plastic cup" mostly adopts the structure of integration and blanking.

This kind of cup-making machine has the following characteristics:

· The upper scissors and the lower knife edges not only play the role of blanking, but also play the role of forming edges.

· The upper and lower knife edges are generally fixed, and the cavity can be flexibly replaced. A set of moulds can produce plastic cups of various specifications. It not only reduces the cost of die manufacturing, but also speeds up the speed of die changing, and at the same time improves the production efficiency.

· The pressing die plug is stretched and compressed air pressure moulded.

· Upper scissors and lower edges can be cut 100-5 million times. The blunt upper scissors and lower cutters can be used many times after grinding sharply.

Therefore, in the production of "disposable plastic cup", the quality of mould maintenance and maintenance directly affects the production efficiency and product quality. Therefore, the effective maintenance and maintenance of the die is particularly critical.

Therefore, it is suggested that:

· It is better to fix the thermoforming die on a positive pressure thermoforming machine matching the model. Because the frequent replacement of the die not only reduces the production efficiency, but also invisibly increases the possibility of damage in the process of disassembly, storage, installation and debugging of the die. It is bound to reduce the accuracy of matching gradually, thus affecting product quality and production efficiency.

Whether imported or domestic positive pressure hot forming.