HMD 218-DM2 Hybrid Two-Color Injection Molding Machine
Two independent injection units · Dual linear-guide injection unit · One-shot two-color molding
HMD 218-DM2 is a hybrid two-color injection molding machine on the 2180 kN platform. Units A and B fire synchronously or in intervals to achieve one-shot inner/outer different-material molding and color-gradient effects, and the machine remains compatible with single-color production.
Model Overview
| Item | Specification |
|---|---|
| International rating | 445/130 (Unit A) · 876/218 (Unit B) |
| Application | Two-color containers, two-color preforms, hybrid-color products, home appliance and daily-use appearance parts |
| Core configuration | Two independent injection units + dual linear-guide injection unit + optimized screw and barrel assembly |
| Process features | Simultaneous or interval injection for gradient effects; dual-purpose machine compatible with single-color products |
Injection Units
Units A and B use different screw sizes and can run independently or synchronously.
| Item | Unit | Unit A | Unit B |
|---|---|---|---|
| International rating | — | 445/130 | 876/218 |
| Theoretical shot volume | cm³ | 215 | 471 |
| Shot weight (PS) | g | 196 | 423 |
| Shot weight (PS) | oz | 6.9 | 15.1 |
| Injection rate | g/s | 113 | 192 |
| Screw diameter | mm | 38 | 50 |
| Injection pressure | MPa | 207 | 186 |
| Screw L/D ratio | — | 22:1 | 22.2:1 |
| Screw stroke | mm | 190 | 240 |
| Screw speed | r/min | 0 ~ 259 | 0 ~ 240 |
Clamping Unit Parameters
| Item | Unit | Specification |
|---|---|---|
| Clamping force | kN | 2180 |
| Mold opening stroke | mm | 510 |
| Platen size | mm | 780 × 780 |
| Distance between tie bars (H × V) | mm | 530 × 530 |
| Max. daylight | mm | 1060 |
| Mold thickness (min–max) | mm | 200 ~ 550 |
| Ejector stroke | mm | 140 |
| Ejector force | kN | 50 |
Power and Heating System
| Item | Unit | Unit A | Unit B |
|---|---|---|---|
| Hydraulic system pressure | MPa | 17.5 | 17.5 |
| Pump motor power | kW | 18.7 | 31.3 |
| Heater power | kW | 9.6 | 22.6 |
| Number of temp control zones | — | 3 | 6 |
Other Parameters
| Item | Unit | Specification |
|---|---|---|
| Oil tank capacity | L | 530 |
| Overall dimensions (L × W × H) | m | 5.5 × 2.1 × 2.1 |
| Machine weight | Ton | 8.9 |
Core Advantages
One-Shot Molding of Different Inner/Outer Materials
Replaces two-step processing with one-shot molding for products with different inner and outer plastics, reducing process steps and cost.
Color-Gradient Injection Process
Simultaneous or interval injection during molding produces gradient effects, giving products richer color expression.
Dual-Purpose Versatility
The machine can also produce single-color products, providing versatile capability and all-round service.
Optimized Screw and Barrel Assembly
Optimized screw and barrel assembly delivers stronger plasticizing capability and better plasticizing performance, meeting a variety of special product needs.
Dual Linear-Guide Injection Unit
The dual linear-guide injection-unit structure delivers fast injection start-up, accurate positioning, and more stable operation.