Injection Molding
2K Double-Shot Injection Mold | Multi-Material Overmolding
2k injection molding-2 shot molding-2 shot injection molding Technology
Specifications
- Material:
- PC+ABS / TPE / TPU (Hard-Soft Combination or Dual-Color)
- Process:
- 2K Two-Shot Injection Molding (Rotary Table or Index Plate)
- Mechanism:
- High-Precision Indexing System / Hydraulic Core-Pulling for Second Shot
- Tolerance:
- +/- 0.05mm (Critical Flash Control at Material Interface)
- Surface Finish:
- SPI-B1 Fine Polish / VDI 3400 Ref. 24 (Textured)
- Mold Steel:
- 1.2344 / S136 (Hardened HRC 48-52 for Extreme Longevity)
- Quality Control:
- Inter-material Adhesion Validation / 100% CMM Interface Check
Product Description:
Advanced 2-cavity double-shot (2K) tooling engineered for multi-material components requiring a seamless bond between rigid substrates and soft elastomeric overmolds. This system utilizes a high-precision rotary mechanism to ensure perfect alignment between the first and second shots, effectively eliminating flash and weld line issues at the critical sealing interfaces. Optimized for high-cycle efficiency and consistent material shut-off, this mold is designed to meet the rigorous cosmetic and structural demands of Tier-1 automotive and consumer electronic assemblies where tactile feel and aesthetic precision are paramount.
Product Overview
This is a sophisticated 2-cavity double-shot (2K) injection mold, designed for high-efficiency production of multi-material plastic parts. This tooling technology allows two different colors or types of plastic (e.g., ABS + TPE) to be molded into a single component within one machine cycle, ensuring perfect bonding and structural integrity.
At JST Mold, we are experts in complex 2K / Two-Shot molding. This 2-cavity mold features high-precision sealing surfaces to prevent color bleeding and advanced mechanical movements to handle material transitions. It is an ideal solution for automotive buttons, ergonomic handles, and high-end consumer electronic housings that require both aesthetics and functional performance.
Key Features
- Advanced 2K / Double-Shot Technology: Enables the integration of two materials/colors in one shot, eliminating the need for secondary assembly and providing a premium, seamless finish.
- 2-Cavity High Efficiency: Optimized 2-cavity layout balances production speed with extreme dimensional consistency across both parts.
- Precision Sealing Design: Engineered with micron-level tolerances on sealing faces to ensure zero flash and clear-cut color separation lines.
- Complex Core/Cavity Movement: Designed for compatibility with rotary-table or transfer-type 2K injection machines, featuring robust mechanisms for long-term reliable operation.
- Optimized Hot Runner System: Equipped with a balanced hot runner manifold to ensure uniform plastic flow and temperature control for both materials.
Technical Specifications
Item | Details |
Mold Type | Two-Color / Double-Shot (2K) Mold |
Cavity Count | 2-Cavity(Produces 2 complete parts per cycle) |
Compatible Materials | ABS+TPE, PC+ABS, PP+TPU (Multi-material bonding) |
Tooling Steel | Hardened S136, 1.2344, or NAK80 (High-Precision Steel) |
Runner System | Precision Hot Runner (Yudo/Mold-Master/Husky) |
Mold Life | 500,000 to 1,000,000 shots |
Standard Compliance | Automotive & Electronics Industry Standards (IATF 16949) |
Why Choose JST Mold for 2K Tooling?
- Expert 2K Engineering:We specialize in the complex design required for double-shot molds, including perfect material compatibility analysis and overmolding bond strength optimization.
- Micron-Level Accuracy:Our high-speed CNC and mirror EDM processing ensure that the intricate meeting points of two materials are flawless.
- Comprehensive Trial & Validation:Every 2K mold undergoes rigorous trial cycles (T1-T3) on our in-house 2-color machines to ensure it is production-ready for the client.