SERVICES
Double Shot Injection Molding
Double shot (also called 2-shot or multi-shot) injection molding molds two different materials or colors into one part in a single machine cycle. The result: soft-touch grips, integrated seals and two-color aesthetics that would otherwise require glue, press-fit or a second operation.
WHAT WE OFFER
What We Offer
HOW IT WORKS
From Inquiry to Delivery
First Shot: Rigid Substrate
The structural part (PC, ABS, PP or PA) is injected into cavity A at the molding temperature, packed and cooled to a solid substrate.
Rotate or Index
The mold rotates 180° on a rotary platen — or the core indexes to the next station — so the cooled substrate now faces cavity B without leaving the machine.
Second Shot: Elastomer or Second Color
TPE, TPU, TPV or a second color is injected over the substrate while it is still warm enough to weld; a chemical bond and a mechanical interlock form at the interface.
Cool, Eject, Ship
The two-material part cools, ejects as one piece and is trimmed of gate vestiges — no assembly station, no adhesive, no press-fit, no alignment risk.
CHALLENGES
Challenges This Service Solves
FAQ
Double Shot Injection Molding — FAQ
Can you help with product development?
Yes. From design review and material selection to prototyping, tooling and mass production — our engineers support you through the entire product lifecycle.
Do you ship internationally?
Yes. We ship worldwide via air and sea freight, with export packing, documentation and delivery tracking handled by our team.
What quality inspections do you perform?
First article inspection, dimensional measurement, material verification and surface checks — with inspection reports provided per batch. Full details are agreed before production.
What is the difference between rapid and production tooling?
Rapid tooling uses softer materials and simplified construction for fast, low-cost validation runs (hundreds to low thousands of parts). Production tooling uses hardened steel for high-volume, long-life programs.
How long does injection mold making take?
Rapid tooling prototypes can be ready in days; production tooling typically takes several weeks depending on complexity, cavity count and steel grade. We confirm a detailed schedule with your quotation.
Do you provide DFM feedback?
Yes. Every quotation includes a design-for-manufacturing review: draft angles, wall thickness, gate and weld-line locations, tolerance recommendations and cost-saving suggestions — before any tooling is cut.
What file formats do you accept?
We accept STEP, IGES, STL, X_T and 2D drawings (PDF or DWG). A 3D model lets us quote most accurately; 2D drawings are used to confirm critical tolerances and specifications.
How do I get a quote?
Upload your 3D file (STEP, IGES, STL or X_T) through the quote page, or email it directly. Our engineers review the design, run a DFM check and send you a detailed quotation — usually within one business day.
RELATED SEARCHES
What Buyers Search
* Keywords from Semrush competitor data — one page per search intent.
Material Combinations We Run
Pairing guidance per https://firstmold.com/two-shot-injection-molding/ — compatibility, shrinkage difference and shape complexity decide the pair.
Machine and Tooling Configurations for 2K Molding
Machine classes are the standard two-shot configurations; MOLDITQUICK floor data is our own.
Material Pairing Compatibility at a Glance
Bond type and fit are standard two-shot engineering guidance; the final bond is validated by trial.
| Resin pair | Bond | Typical use |
|---|---|---|
| PP + TPE | Chemical (same family) | Soft-touch handles, automotive |
| PC + TPU | Mechanical + chemical | Electronics, grips |
| PA + TPV | Chemical | Seals, connectors |
| ABS + TPU | Mechanical | Consumer housings |
| POM + TPE | Mechanical | Gears, sliders |
| PMMA + TPE | Mechanical | Transparent + soft-touch trim |
| PP + EPDM/TPV | Chemical | Automotive trim, seals |
| PC + ABS/TPE | Mechanical | Display frames, edges |
| PBT + TPE | Mechanical + chemical | Connectors, sensor housings |
Where Double Shot Pays Off
Soft-touch grips
Rigid handle + TPE overmold for ergonomic, non-slip comfort in one shot.
Sealing lips
A flexible TPE or TPV seal molded directly onto a rigid structural body.
Multi-color aesthetics
Two contrasting colors in a single part — no paint, no secondary assembly.
Electrical insulation
Insulating layer over conductive substrate for connectors and housings.
Gaskets & boots
Integrated elastomeric gasket that cannot loosen or be mis-assembled.
Ergonomic handles
Hard core plus soft grip in one shot — tools, appliances and power equipment.
Anti-vibration parts
Elastomeric dampers molded over rigid mounts and brackets.