Models

DP Multi-Material Injection Molding Machines

DP multi-material injection molding machines for two-color, three-color and multi-material parts, from 2,180 to 8,000 kN clamping force.

DP Multi-Material Injection Molding Machines — HWAMDA

MACHINE RANGE

Compare the available model range

Review DP, DM2 and DM3 by material count, part interface, mold motion, injection sequence and automation.

Models6
Clamping force2,180–8,000 kN

How multi-material molding works

Multi-material injection molding combines two or more materials or colors in one part during one machine cycle. It replaces assembly, painting and secondary overmolding, and it creates bonded joints and color effects that are impossible with single-shot molding. The DP series uses several injection units on one machine, and the method depends on the part and the mold.

Rotary platen or rotary core
The first material is molded, then the mold half rotates 180° or 120° and the second material is molded onto the first. Used for two-color caps, handles with soft grips and bonded seals.
Mixed-layer or color-mixing injection
Two units inject into the same cavity together or in sequence, producing marbled, layered or gradient color effects in one shot.
Sequential injection
Units inject one after the other into the same mold to create defined material zones without rotation.
Core-back and transfer methods
A mold core retracts to open space for the second material, or the preform is transferred between cavities by robot.

Applications

Housewares
Two-color basins, buckets, cups, storage boxes and kitchen tools with decorative or functional color zones.
Packaging and closures
Two-color caps, flip-tops and cosmetic closures.
Soft-touch parts
Handles and grips with a TPE soft layer over a PP or ABS substrate.
Lighting and signal parts
Clear and colored lens areas combined in one part.
Technical parts
Seals molded onto housings and multi-color buttons and keys.

DP model overview

DM2 models carry two injection units for two-color and two-material molding, including two-color mixing. DM3 models carry three injection units for three colors or materials.

ModelClamping forceInjection unitsNotes
HMD-DP218-DM22,180 kN2Two-color mixing and mixed-layer output
HMD-DP218-DM32,180 kN3Three independent color feeds
HMD-DP268-DM22,680 kN2Two-color mixing with larger dosing capacity
HMD-DP268-DM32,680 kN3Three units with synchronized output
HMD-DP4104,100 kN2 (A and B)Shot weight A unit 785 g, B unit 932 g (PS)
HMD-DP8008,000 kNPer configurationLarge multi-shot parts

Full specifications for each model are provided with the configuration proposal.

Why choose multi-material molding

Fewer process steps
Assembly, painting and secondary overmolding are replaced by one machine cycle.
Better bonding and sealing
Materials bond while hot, giving stronger and more consistent joints than assembly.
Design freedom
Color zones, soft-touch areas and transparent windows add product value.
Consistent quality
Both materials are placed by the mold, avoiding alignment and assembly errors.

Material compatibility

When materials must bond, compatibility decides the result. Typical good pairs include PP with PP-based TPE, ABS or PC with TPU or SEBS-based TPE, and same-polymer color combinations such as PP with PP or PS with PS. Shrinkage difference, processing temperatures and the order of injection are checked during the project review. Confirm bonding grades with your material supplier.

What to send

Send the part drawing or sample, the materials and colors for each zone, the shot weight of each material, the intended molding method if known, mold dimensions or concept, cavity count and target output. A sales engineer will match the DP model, injection units and mold concept to your part.

FAQ

Frequently asked questions

What is the difference between DM2 and DM3 models?

DM2 models have two injection units for two-color or two-material molding, including color mixing. DM3 models have three injection units for three colors or materials.

What shot weight does the HMD-DP410 offer?

The HMD-DP410 has an A unit with 785 g and a B unit with 932 g shot weight, both based on PS.

Which materials can be combined in multi-material molding?

Common combinations are same-polymer colors, PP with PP-based TPE, and ABS or PC with TPU or TPE. Bonding and shrinkage are checked for each project.

Do I need a special mold for multi-material parts?

Yes. Rotary, core-back or mixed-color molds are designed together with the DP machine so the units, rotation and sequence match.

Discuss your production requirement

Send the information you already have. We can help structure missing technical inputs.

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