Piston Shutoff Nozzle
Piston shutoff nozzles are pneumatically or hydraulically actuated, allowing the screw to charge in parallel while the mould is open. This shortens the injection cycle time and increases productivity and process stability, and they can be combined with a filter or static mixer for additional function.
Technical data
| PARAMETER | UNIT | RP-I | RP-II | RP-III |
|---|---|---|---|---|
| Max. Shot Weight (Ref.) | gram | 700 | 6000 | 30000 |
| Max. Screw Size (Ref.) | mm | Φ60 | Φ120 | Φ240 |
| Max. Machine Size (Ref.) | tonnage | 300T | 1200T | 3000T |
| Body Length (L1) | mm | 140 | 180 | 326 |
| Body Diameter (G) | mm | Φ60 | Φ80 | Φ110 |
| Air Pressure (Ref.) | Bar | 6 | 8 | 10 |
| Hydraulic Pressure (Ref.) | Bar | 30 | 40 | 50 |
| Max. Inj. Pressure (Ref.) | Bar | 3000 | 3000 | 3000 |
| Max. Temperature | °C | 400 | 400 | 400 |
Engineering highlights
- Reduced injection cycle time
- Increased productivity and process stability
- Combine use with filter or static mixer to achieve more function
PRODUCT VIDEO
Frequently Asked Questions
A piston shutoff nozzle uses a piston-driven mechanism to open and close the melt passage. This provides controlled shutoff during the injection molding cycle.
Piston shut-off nozzle are commonly used for screw charging while mold open to shorten cycle time, even with regrind plastics, it can functioning well.
The selection should take into account machine model, installation space, flow rate and material type.
Yes. ROOTIER can develop piston shutoff nozzles based on the customer's injection molding machine, existing nozzle dimensions, and specific processing conditions.