China 2K Two-Shot Injection Molding Suppliers: Dual-Color Molding Factory for Automotive & Power Tools
Engineering Specifications
| Product Application | Automotive components, power tool housings |
| Mold Type | 2K / Two-Shot injection mold |
| Material Combination | ABS + TPE, PC + ABS, PP + TPU (custom per requirement) |
| Mold Size | Up to 3,200 × 1,800 × 1,600mm |
| Mold Steel | S136 (cavities), 718H (cores) |
| Cavity Layout | Single-cavity, multi-cavity |
| Gate System | Sequential valve gate system |
| Surface Finish | Class-A + soft-touch (per material combination) |
| Expected Mold Life | 500,000+ shots per material layer |
| Tolerance | ±0.01mm |
| Injection Equipment | Dedicated 2K dual-shot machine, 250T–360T |
Technical Process
Step 1
Inquiry & Requirements Analysis
Customer submits product drawings, material specifications, and production targets. Jinlong evaluates 2K design feasibility and provides a quotation within 3 business days.
Step 2
2K Design Review & DFM
Jinlong reviews material pair compatibility, interface geometry, sequential injection sequence, and temperature management. DFM feedback provided within 48 hours.
Step 3
Mold Design — 2K Specific
Jinlong develops 2K mold with sequential valve gate system, isolated temperature control zones, and precision inserts for each material cavity. Designs submitted for approval.
Step 4
Precision Manufacturing
Mold machined in Jinlong's tool room with specialized attention to valve gate passages, interface surfaces, and finishes on both material cavities.
Step 5
2K Trial & Process Development
Trials on Jinlong's dedicated 2K dual-shot machine. Process engineers develop optimal parameters — valve gate timing, injection profiles, temperatures, cycle time. Full process documentation provided.
Step 6
Sample Approval & Delivery
Samples measured on CMM with complete FAI documentation. Upon approval, mold shipped with full documentation.
Step 7
Ongoing Support
Valve gate adjustments, spare parts, and engineering modifications available.
Customization Capabilities
| Material Combinations | ABS+TPE, PC+ABS, PP+TPU, PA66+TPE, PC+PMMA |
| First Shot Materials | ABS, PC, PP, PA66, PC/ABS |
| Second Shot Materials | TPE, TPU, silicone, soft-touch elastomers |
| Cavity Layout | Single-cavity, multi-cavity, family molds |
| Overmold Design | Full overmold, partial overmold, sealing lip |
| Gate System | Sequential valve gate, hot runner individual nozzle control |
Why Jinlong for 2K Two-Shot Molds?
- Dedicated 2K dual-shot injection machines (250T–360T) for in-house trials
- Sequential valve gate systems designed and manufactured in-house
- Moldflow simulation for both first-shot and second-shot processes
- Complete 2K process development and documentation
- 40+ years of precision mold manufacturing experience
Quality Assurance
- ISO 9001:2016 and IATF 16949:2016 certified
- Full CMM inspection for both material layers
- Interface geometry and adhesion validation
- Complete documentation package with every delivery
Frequently Asked Questions
What is a 2K (Two-Shot) injection mold?
A 2K or two-shot injection mold allows two different materials or colors to be molded into a single integrated component in one cycle, improving bond strength and efficiency.
What material combinations are best for 2K molding?
Common combinations include ABS+TPE, PC+ABS, PP+TPU, and PA66+TPE. The chemical compatibility of the two materials is critical for ensuring strong adhesion.
What is the maximum mold size Jinlong can manufacture?
Jinlong can design and manufacture 2K molds with dimensions up to 3,200 × 1,800 × 1,600mm.
What injection equipment is required for 2K molds?
2K molds require dedicated dual-shot injection machines (ranging from 250T to 360T) equipped with two independent injection units.
How does Jinlong ensure the quality of 2K molds?
We are ISO 9001:2016 and IATF 16949:2016 certified. We conduct full CMM inspections, interface geometry checks, and adhesion validation on both material layers.