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2K-Two-Shot-Injection-Mold-3.jpg
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China 2K Two-Shot Injection Mold Suppliers - Dual-Color Molding for Automotive & Power Tools Factory Solutions

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Two-shot injection molding, also known as 2K molding, is a sophisticated manufacturing process that seamlessly combines two different materials in one molding operation. This innovative technique produces components with exceptional structural strength while offering functional or aesthetic finishes. It's particularly popular in industries such as automotive interiors and power tools, where components must feature both rigid backing and soft-touch or dual-color surfaces.
As a leading supplier in China, Jinlong Electric specializes in producing high-quality 2K molds designed for automotive and power tool applications. Our extensive production experience highlights the effectiveness of two-shot molds for creating complex items like dual-color electric tool housings and automotive parts that require durable soft-touch surfaces paired with robust structural bases.
This case exemplifies Jinlong's expertise as a factory dedicated to the design and manufacture of 2K two-shot injection molds. With our state-of-the-art dual-shot injection equipment and a skilled engineering team, we ensure optimal process development and product quality.

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    Product Details

    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

    Category Options
    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
    Back to Automotive Molds

    Frequently Asked Questions (FAQ)

    What are the main benefits of using a 2K / Two-Shot injection mold?
    2K injection molding allows for the combination of two different materials or colors in a single process. This enhances product aesthetics, integrates soft-touch surfaces (like TPE/TPU) with rigid substrates, improves sealing performance, and eliminates secondary assembly steps, thereby lowering production costs.
    Which material combinations are commonly supported?
    We support a wide range of material pairings, including ABS+TPE, PC+ABS, PP+TPU, PA66+TPE, and PC+PMMA. We evaluate the chemical and thermal compatibility of each material pair during our initial DFM review to ensure optimal adhesion.
    What is the expected lifespan of Jinlong's 2K molds?
    Our 2K molds are built with high-quality tool steels, such as S136 for cavities and 718H for cores, and are engineered to deliver a mold life of 500,000+ shots per material layer under proper maintenance.
    Do you perform in-house trials for 2K molds?
    Yes, Jinlong operates dedicated in-house 2K dual-shot injection machines ranging from 250T to 360T. This allows us to fully test the molds, optimize parameters such as valve gate timing and injection profiles, and provide complete trial documentation.
    What quality standards do you follow?
    We are ISO 9001:2016 and IATF 16949:2016 certified. Every mold undergoes full Coordinate Measuring Machine (CMM) inspection for both material layers, along with rigorous interface geometry and adhesion validation before shipment.