Advanced 2k Mold Tooling Revolutionizes Multi-Material Production

2026-03-09

bi injection mold



Introduction  

In today’s precision manufacturing landscape, a bi injection mold solution must deliver seamless multi-material integration and high throughput. At Longterm, our 2k mold tooling expertise meets these demands with robust double injection mould systems capable of over-molding hard and soft polymers in a single cycle. By leveraging rotation bi-injection mold designs, we reduce cycle time by up to 20% and scrap rates by 25%.


Key Technical Specifications  

1.Cavity & Core Precision  

  •  bi injection mold cores (±0.01 mm) and cavities engineered for identical first-shot dimensions  

  •  double injection mould female cavities with distinct geometries for two-color components  

  •  two shots molds with matched core-to-cavity clearance (0.1–0.3 mm) for hermetic seal  

  •  2k mold tooling ensures consistent part weight ±0.5 g across runs  


2.Rotational Alignment  

  •  rotation bi-injection mold with 180° central rotation block   

  •  precision guide pins and locator blocks (tolerance ±0.01 mm) in two shots molds  

  •  rotation bi-injection mold interlock system (response ≤0.3 s) for safe multi-stage operation  


3.Structural & Installation Parameters  

  •  double injection mould plate thickness ≥170 mm to withstand 100–150 MPa injection pressure  

  •  KO hole spacing 200 × 200 mm for ejector alignment in bi injection mold platforms  

  •  two shots molds plated for 10 L/min coolant flow, ΔT ≤3 °C  


4.Automated Demolding & Temperature Control  

  •  2k mold tooling with self-releasing nozzle for automatic sprue separation  

  •  two shots molds hot runner manifold with insulation sleeves (±5 °C melt stability)  

  •  bi injection mold temperature zones: PC at 280–300 °C; TPE at 180–200 °C  


Performance & Benefits  

1.Efficiency Gains  

  •  bi injection mold cycle times: 15–30 s  

  •  double injection mould throughput increased 18% via conformal cooling  

  •  two shots molds reduce secondary assembly by 100%  


2.Quality & Reliability  

  •  rotation bi-injection mold FEA-verified seal strength at ≥80 MPa  

  •  2k mold tooling mean part concentricity ±0.02 mm  

  •  bi injection mold scrap rate ≤1.5%  


3.Case Study: Automotive Sensor Housings  

A Tier-1 OEM adopted our double injection mould solution and rotation bi-injection mold design, producing over-molded sensor housings with leak rate ≤1×10⁻⁶ Pa·m³/s. With two shots molds, assembly time dropped by 30% and yield improved to 99.2%.


Selection Guide  

  •  For high-volume multi-color grips: choose bi injection mold tooling with hardened steel cores and balanced cooling channels.  

  •  For medical device seals: specify double injection mould plates with baffle cooling (cycle time cut by 20%).  

  •  For elastomer-to-hard polymer over-molding: leverage 2k mold tooling with sequential injection zones and temperature control.  

  •  For complex geometries with rotation: implement rotation bi-injection mold design with ±0.01 mm alignment accuracy.


Why Our 2k Mold Tooling?  

  • Over 200 successful bi injection mold and double injection mould installations  

  • In-house FEA and mold flow analysis validating two shots molds performance  

  • Dedicated R&D on rotation bi-injection mold safety and efficiency  

  • Cost-effective 2k mold tooling solutions with ROI payback in under 12 months  


Contact for Inquiries  

Longterm Manufacturing Solutions Ltd.  

  • Tel: +86 156 0239 2025  

  • Email: longterm@longterm-mold.com  

  • Website: www.longterm-mold.com  


This specification and selection guide ensure your bi injection mold, double injection mould, two shots molds, 2k mold tooling, and rotation bi-injection mold projects meet the highest standards of precision, efficiency, and cost-effectiveness.


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