epe foam machine

1.Screw: It is made of the top quality 38CrMnALAn azotized steel. Thermal and azotized treatment and special surface plating make the screw is with high intensity, high rigidity and long life. The screws diameter is 105mm, length is 4740mm (two-sect style), L/D=1:55. This feature improves the plastifyig ability and quality of the screw.
2. Cylinder: It is made of top quality 38CrMnALAn azotized steel. Thermal treatment prevents it from wearing down after long time use. The cylinder, material feeding sect and die-head are connected by flanges.
3. Material-Feeding Sector: Two ends of it are connected to the cylinder and gear box. From here the raw material is sent to the extruder. The user should keep some cooling water in circulation in order to prevent the temperature arising, which will result in pastiness, agglomeration of the raw-material, and even block the material-feeding hole.
4. 3-phase AC motor of extruder: 3-phase AC motor is an adjustable DC motor, main power is 55KW. It is cooled by air. The main motor is connected to main screw though gear box.
5. Butane Input and Butane Pump: The butane pump is a high pressure measuring pump. This pump jets the deliquesced butane into cylinder by a high-pressure of 100-150Mpa. The butane mixes with the melted LDPE in the entrance of the machine cylinder. There is a valve in the entrance of butane to insure the melted LDPE never flow backwards when the pressure in the cylinder is higher than the butane pressure. It is also to insure the production safety.
6. Input of anti-shrinkage and anti-shrinkage pump: the anti-shrinkage pump send the heated anti-shrinkage into cylinder by a pressure of 10-15Mpa. The melted anti-shrinkage mixes with LDPE in the entrance of anti-shrinkage. There is a valve in the entrance part to insure the melted LDPE never flow backwards when the pressure in the cylinder is higher than the anti-shrinkage pressure. It is also to insure the production safety.
7. Die-Head: Melted raw material is extruded from here. The raw material starts to foam when goes through the die-lip. The thickness of EPE sheet depends on the die-lip and pulling speed.
8. Shaping drum: The thickness of EPE sheet depends on this part. So the cooling water, cooling air are provided by this part.
9. Pull Roller: The sheets extended by the molding drum should be draught after entering this sector. At this time the pulling speed should be balanced in order to insure the quality of sheet. The roller diameter is 480?1550mm. And there is a speed-changeable motor to timing the pulling speed.
10. Rewinding roller: This part is equipped with a meter counter to set the sheets length. It will rotates 180