More usable mold space
Large daylight, wide tie-bar spacing and an unrestricted mold-opening stroke support deep parts and bulky tooling.
Two-platen layout → open mold area → easier large-mold accommodation
Two-Platen Injection Molding Machines
SOUND Machinery · DP Series
Two-Platen Injection Molding Machines
More mold space in a compact machine layout. The servo-hydraulic SOUND DP platform is built for large automotive, appliance, logistics and industrial parts—with modular clamping and injection combinations matched to your mold and process.
Final machine configuration is selected from your part, material, mold and production target.
450–4,000 tstandard DP platform
up to 9,000 tSOUND large-machine engineering scale
up to 9,000 tSOUND large-machine engineering scale
DP450–DP4000 · up to 9,000 t engineering scale
450–4,000 t
Standard DP platform range in the current SOUND catalog
Standard DP platform range in the current SOUND catalog
Up to 9,000 t
DP9000-GJ2100 engineering scale announced by SOUND
DP9000-GJ2100 engineering scale announced by SOUND
±0.2 mm
Specified mold-opening and closing position accuracy
Specified mold-opening and closing position accuracy
≤5‰
Specified product repeatability under validated process conditions
Specified product repeatability under validated process conditions
Why two-platen
Built around the mold—not around extra machine length.
The DP architecture combines a short machine envelope with generous mold space, direct hydraulic clamping and flexible injection-unit selection. Each benefit below connects the machine structure to a practical production result.
Compact production footprint
The two-platen arrangement shortens the clamping section compared with a conventional three-platen large machine.
Fewer structural platens → shorter layout → better floor-space use
Stable clamping movement
Rigid platens, a box-type body, guided platen support and synchronized locking help maintain repeatable mold motion.
Rigid structure + guided support → controlled movement → consistent molding
Configured for the process
Clamping, injection, screw, controller, interface and automation options can be combined around the application.
Modular platform → application-specific pairing → less compromise
Short machine · Large mold space
Machine architecture
Space. Stability. Flexibility.
DP is a modular large-machine platform. Its two-platen clamp makes room for large molds while the injection unit, screw system, controls and interfaces are selected for the material, part geometry and required output.
01
Open mold area
Large opening stroke and flexible mold height for deep-cavity parts and large tooling.
02
Non-contact tie bars
Reduced sliding friction supports a clean mold area and low mechanical wear.
03
Modular combinations
Clamping and SP injection units can be paired to match shot size, pressure and plasticizing demand.
Core technology
Four systems working as one platform.
Explore the parts of the DP machine that matter most to mold movement, injection response, process stability and operator control.
Rigid clamping with synchronized locking
A box-type clamping body, parallel platens, T-type linear guidance and synchronized locking provide the mechanical foundation for stable mold motion.
- Short-stroke high-pressure cylinders build clamping pressure rapidly.
- Floating piston connections support even force transfer.
- Guided platen support is specified for smooth, accurate travel.
- Low-pressure mold protection helps protect tooling during closing.
Responsive, modular injection
The compact single-cylinder injection structure combines low inertia with a rigid base. Multiple SP injection units and screw diameters let the system be matched to the part and resin.
- Low-friction injection cylinder for fast response and controlled movement.
- Quick-disassembly plasticizing arrangement supports maintenance.
- Closed-loop feed-port temperature control helps stabilize feeding.
- Application-specific screw geometry, wear grade and mixing options.
Hydraulics designed for process stability
Proportional control and independent oil conditioning support smooth mold motion and stable machine operation across changing cycle and ambient conditions.
- Proportional-valve control for mold opening and closing.
- Independent filtration and cooling circuit for oil-temperature stability.
- High-response circuit for rapid movement and extended pressure holding.
- Proportional back pressure for consistent plasticizing control.
KEBA control at the machine
The specified Austrian KEBA control platform manages pressure, speed, temperature and position with a clear operator interface. Controller and screen are selected with the machine configuration.
- Standard KEBA 2000 platform; KEBA 5000 and 8000 available by configuration.
- Mold data storage with RAM and USB support.
- Optional 15-inch or 21-inch operator display.
- EUROMAP automation, hot-runner and mold-handling interfaces available.
Application fit
For large molds and demanding industrial parts.
The correct DP configuration is driven by more than tonnage. Mold dimensions, resin, projected area, shot weight, flow length, cycle target and automation all influence the final machine.
Automotive
Exterior and interior components
Bumpers, lamps, trim and other large parts that need mold space, controlled movement and automation access.
Selection focus: surface quality · large tooling · robot access
Logistics
Pallets, crates and containers
Large projected areas and durable materials require balanced clamping, robust plasticizing and reliable part handling.
Selection focus: shot size · cooling · ejection and handling
Appliances
Large appliance housings
Air-conditioner panels and appliance shells benefit from stable injection control and generous mold accommodation.
Selection focus: appearance · dimensions · low-stress molding
Deep cavity
Bins and industrial products
Deep parts need sufficient daylight and mold-opening stroke, with ejector and robot travel planned as one system.
Selection focus: daylight · opening stroke · demolding path
Application images illustrate common DP use categories and are not presented as customer case studies. Final suitability depends on part, material and tooling data.
Model range
Start with the mold space. Then size the injection unit.
Use the model finder for a first clamping-unit comparison. SANTSAI and SOUND engineers will confirm clamp force, shot size, screw, plasticizing capacity, machine dimensions and options against your production data.
Standard DP platform
450–4,000 t
450–4,000 t
Large-machine engineering
Up to 9,000 t
Up to 9,000 t
How to read the range: the supplied DP catalog lists twelve standard clamping sizes from DP450 to DP4000. The DP9000-GJ2100 is presented separately as a SOUND ultra-large project for large-diameter pipe fittings and infrastructure products.
DP450 — 4,500 kN
DP650 — 6,500 kN
DP900 — 9,000 kN
DP1100 — 11,000 kN
DP1300 — 13,000 kN
DP1600 — 16,000 kN
DP1850 — 18,500 kN
DP2100 — 21,000 kN
DP2400 — 24,000 kN
DP2800 — 28,000 kN
DP3300 — 33,000 kN
DP4000 — 40,000 kN
SP1700 — 1,696 cm³
Nominal injection capacity and PS shot weight update with the selected SP unit.
Catalog reference only. kN values show clamping force; model names indicate the nominal tonnage class. A larger clamp is not automatically the best process choice.
Clamping force
4,500 kN
4,500 kN
Tie-bar spacing H×V
850 × 800 mm
850 × 800 mm
Mold height min–max
350–900 mm
350–900 mm
Maximum daylight
1,450 mm
1,450 mm
Selected injection unit
SP1700
SP1700
Nominal injection capacity
1,696 cm³
1,696 cm³
Shot weight (PS)
656 g
656 g
| Model | Clamping force | Tie-bar spacing H×V | Mold height min–max | Mold-opening stroke | Max daylight | Max mold weight |
|---|---|---|---|---|---|---|
| 4,500 kN | 850 × 800 mm | 350–900 mm | 1,100 mm | 1,450 mm | 6.5 t | |
| 6,500 kN | 1,040 × 910 mm | 400–950 mm | 1,350 mm | 1,750 mm | 9.5 t | |
| 9,000 kN | 1,180 × 1,000 mm | 500–1,100 mm | 1,600 mm | 2,100 mm | 13 t | |
| 11,000 kN | 1,270 × 1,100 mm | 550–1,250 mm | 2,000 mm | 2,550 mm | 16 t | |
| 13,000 kN | 1,390 × 1,280 mm | 600–1,350 mm | 2,250 mm | 2,850 mm | 23 t | |
| 16,000 kN | 1,550 × 1,450 mm | 700–1,550 mm | 2,550 mm | 3,250 mm | 33 t | |
| 18,500 kN | 1,650 × 1,550 mm | 750–1,600 mm | 2,650 mm | 3,400 mm | 40 t | |
| 21,000 kN | 1,800 × 1,600 mm | 800–1,700 mm | 2,800 mm | 3,600 mm | 50 t | |
| 24,000 kN | 1,950 × 1,700 mm | 850–1,800 mm | 2,950 mm | 3,800 mm | 60 t | |
| 28,000 kN | 2,100 × 1,800 mm | 900–2,000 mm | 3,200 mm | 4,100 mm | 70 t | |
| 33,000 kN | 2,270 × 1,900 mm | 950–2,000 mm | 3,350 mm | 4,300 mm | 75 t | |
| 40,000 kN | 2,400 × 2,000 mm | 1,000–2,200 mm | 3,500 mm | 4,500 mm | 85 t |
Clamping data above follows the supplied DP catalog. Injection-unit combinations, machine dimensions, power, oil volume, interfaces and safety packages vary by configuration. SOUND reserves the right to make technical changes.
Large-machine engineering
Up to 9,000 t: SOUND’s ultra-large two-platen class.
DP9000-GJ2100 sits beyond the standard DP450–DP4000 catalog lineup. SOUND presents the machine for large-diameter pipe fittings and infrastructure products, showing how its two-platen architecture scales to exceptional mold and shot requirements.
90,000 kNClamping force
2,100 kgPublished injection volume
≈1,000 tPublished machine weight
Configuration options
Specify the machine around the process.
Options should be selected as a system—not as a checklist. Resin behavior, color changes, mold functions, robot sequence, regional safety requirements and factory data standards all affect the final specification.
Good RFQs begin with the part and mold.
Share available drawings, resin, shot weight, mold size, cavity count, target cycle and annual output.
Share available drawings, resin, shot weight, mold size, cavity count, target cycle and annual output.
Injection and material packages
- Bi-metal, fully hardened or chrome-plated screw options
- Bi-metal or fully hardened barrel options
- Transparent-material and high color-mixing screw designs
- Hydraulic or pneumatic self-locking nozzle
- Hydraulic/electric charging synchronized with mold opening
- 6–24 channel sequential injection options
Mold functions and changeover
- Hydraulic core pulling and quick couplings
- Core-pull pressure holding with independent pump unit
- 8–24 channel hot-runner control
- Magnetic mold platen or hydraulic clamping board
- Quick removal of the center ejector rod
- Air blast, ejector check valve and mold protection options
Automation and auxiliary equipment
- Robot and part-removal integration
- Autoloader, hopper dryer and stainless-steel hopper
- Oil/water mold-temperature controller
- Air- or water-cooled chiller
- Mold cooling-water quick couplings
- Complete cell layout and handling coordination
Control, interfaces and safety
- KEBA 5000 or KEBA 8000 controller
- 15-inch or 21-inch display
- EUROMAP 12, 13, 14, 62, 67, 70 and 71 interfaces
- Energy-consumption meter
- Electrical-cabinet cooling, lighting and controller UPS
- CE or SPI safety configuration and image-based mold protection
Review the part and mold
Confirm material, projected area, shot weight, mold dimensions, functions and demolding path.
Size clamp and injection
Select clamping force, daylight, opening stroke, SP unit, screw and plasticizing capacity.
Engineer the full cell
Coordinate robot, mold temperature, material handling, cooling, guarding and interfaces.
Confirm the project plan
Finalize layout, utilities, regional safety, delivery scope, commissioning and training.
Start with your application
Get a DP machine recommendation.
Send the information you already have. We will help identify the clamping unit, injection unit, screw, automation and utility questions that still need to be confirmed.
Frequently asked questions
What buyers usually need to confirm.
When is a two-platen machine a good fit?
Two-platen machines are especially useful when the project needs generous mold space, a large opening stroke or a shorter machine layout. The final choice still depends on projected area, resin, part geometry, output and mold functions.
How do I choose between DP models?
Begin with required clamping force, tie-bar spacing, mold height, daylight, opening stroke and mold weight. Then select the SP injection unit and screw diameter from shot size, injection pressure, flow length and plasticizing demand.
Can the DP series be supplied with automation?
Yes. Robot interfaces, core-pull control, hot-runner control, magnetic or hydraulic mold clamping, sequential injection and auxiliary equipment are available by configuration. The sequence and safety concept should be planned early.
What accuracy figures are specified for the platform?
The current DP catalog specifies ±0.2 mm mold opening/closing position accuracy, ±0.2 mm injection position accuracy and product repeatability of ≤5‰. Results must be validated with the final mold, material and process.
Are CE and regional interfaces available?
CE and SPI safety configurations are listed as options, together with multiple EUROMAP interfaces. Confirm the destination-country standard and full cell scope before the order specification is finalized.
Why are machine dimensions not shown in the summary table?
Overall dimensions change with the selected clamping/injection pairing and options. The project-specific layout drawing should be used for factory planning, utilities, transport, foundation and lifting review.
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