Demark 32 cavities pet preform injection molding system uses a new part cooling and handling system, which features:
1. Cooling on the inner surface of the preform without using compressed air, unlike most post-mold cooling systems which only cool the outer surface
2. Optimized cycle utilization — being mounted on the moving platen, the cooling system remains active for up to 85% of the overall cycle.
Demark pet preform injection moulding systems are available from 280 to 500 tonnes (2800 to
Demark pet injection systems offer:
1. Faster cycles
2. Reduced energy consumption
3. Smaller footprint
4. Improved repeatability
5. Rapid set-up
1. Two state plasticizing enables plenty injection quantity;
2. Take out plate with three working position insures sufficient cooling time and shorter cycle time;
3. High quality parts and accessories from world famous brands enable higher speed and precision;
4. Special screw design increases torque while brings down shear force to avoid degradation;
5. Accumulator from world reputable manufacture increases performance while brings down power consumption;
Reflex Platens
Reflex platens distribute clamp force evenly across the platen face.
Reflex platens:
1. Allow for 10-30% lower clamp tonnage
2. Decrease mold wear
3. Improve part quality
Injection Units
demark systems offer both reciprocating screw (RS) and two-stage injection units. RS units offer the performance required for many PET applications while two-stage is appropriate for higher throughput applications.
Polaris Controls
PC-based controls manage all functions of our PET production systems, with optional packages to integrate auxiliaries and downstream part handling equipment. Advantages include:
1. Faster cycle times
2. Improved shot-to-shot repeatability
3. Remote connectivity through ServiceNetLink
4. Control of molding system and auxiliaries from a single interface
Linear Bearings
Linear bearings support the moving platen directly on the machine base. This design reduces mold wear by improving platen alignment and perpendicularity, and provides a grease free molding environment.
Technical Parameter:
| TYPE | DMk-PET32 | ||
| INJECTION UNIT | Screw L/D Ratio | L/D | 25 |
| Injection Pressure | Kgf/C㎡ | 1080 | |
| Machine Size(LxWxH) | mm | 8650×3600×2200 | |
| Theory Shot Volume(Max) | ㎝ | 1700 | |
| Shot Weight(PS) | g | 2040 | |
| ozs | 72 | ||
| CLAMPING UNIT | Clamping Force | T | 280 |
| Clamping Stroke | mm | 545 | |
| Max/Min Thickness of Mould | mm | 280~700 | |
| Space Between Tie Bars (WxH) | mm | 610×610 | |
| Ejector Stroke | mm | 150 | |
| Ejector Force | T | 10 | |
| NO.of Ejector Pins | pcs | 5 | |
| Max Pressure of System | Kg/C㎡ | 140 | |
| INJECTION MOULD | Cavity (Max) | PCS | 32 |
| Neck of Bottle (Max) | mm | 42 | |
| Length of Preform(Max) | mm | 190 | |
| Weight of Preform(Max) | g | 45 | |
| Form of Mould | Pneumatic pin-valve gate hot-runner | ||
| POWER UNIT | Pump Motor Power | KW | 45 |
| Robot Power | KW | 12 | |
| No.of Heater Zones(0~400℃) | set | 33+8 | |
| Heater Input Capacity | .KW | 40 | |
| Mould Heater Capacity | KW | 38 | |
| Auto Manipulator | Manipulator | Cav | 96 |
| Cooling Form | Cav | 96 | |
| OTHER REQUEST | Electric Power supply (3-phase AC) |
V | 380 |
| KW | 130 | ||
| Chilling Water | degree | 5-15 | |
| Mpa | 0.48 | ||
| L/min | 420 | ||
| Cooling Water | degree | 30~55 | |
| Mpa | 0.25 | ||
| L/min | 100 | ||
| Compressed Air | Mpa | 0.7-0.9 | |
| L/min | 570 | ||
| Compressed Air (Max) | Pcs/h | 9600 | |

