PURELL PP 4+4 Material Edge Gate Tunnel Gate S136 HRC48-50 Steel Finished Core Mold VDI 24# Finish Medical Infusion Tube connector Over Moulding

This high-precision 4+4 multi-cavity injection mold is purpose-built for the overmolding of PP components for medical infusion tubes, designed for PURELL-grade hygienic and functional requirements. Constructed from premium S136 stainless steel hardened to HRC48–50, the mold features a dual edge gate + tunnel gate system, a precision-finished core, and a uniform VDI 24# surface finish. It delivers repeatable, defect-free overmolded parts that meet the strict hygiene, dimensional accuracy, and surface quality standards of medical applications.
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  • 25125

  • YIXUN mold

  • 8480419090

This high-precision 4+4 multi-cavity injection mold is purpose-built for the overmolding of PP components for medical infusion tubes, designed for PURELL-grade hygienic and functional requirements. Constructed from premium S136 stainless steel hardened to HRC48–50, the mold features a dual edge gate + tunnel gate system, a precision-finished core, and a uniform VDI 24# surface finish. It delivers repeatable, defect-free overmolded parts that meet the strict hygiene, dimensional accuracy, and surface quality standards of medical applications.

Key Features

✅ 4+4 Multi-Cavity Design
With a 4+4 balanced cavity layout, the mold ensures equal material flow and consistent part quality across all 8 cavities. This high-efficiency configuration maximizes production throughput while maintaining tight process control, ideal for high-volume manufacturing of medical infusion tube components.
✅ Dual Gate System: Edge Gate + Tunnel Gate
The mold is equipped with both edge gate and tunnel gate configurations, offering optimal flexibility for medical overmolding:
  • Tunnel gate enables automatic gate break during ejection, eliminating manual trimming and reducing the risk of contamination in cleanroom production environments.

  • Edge gate provides stable filling for complex overmolded geometries, ensuring complete material encapsulation and no gaps or voids in the final assembly.

✅ S136 Stainless Steel (HRC48–50)
Crafted from high-grade S136 stainless steel with a hardness of HRC48–50, this mold offers:
  • Superior corrosion resistance, critical for medical-grade production environments and easy mold sanitization.

  • Excellent polishability and dimensional stability, ensuring consistent surface quality over long production runs.

  • A long mold life of over 500,000 shots, ideal for continuous, high-volume medical manufacturing.

✅ Precision Finished Core Mold
The core mold is precision-finished to meet ultra-tight dimensional tolerances required for medical infusion tube overmolding. It accurately replicates complex part geometries such as connection bosses, sealing ribs, and alignment features, ensuring the overmolded parts fit perfectly with the underlying tube components and meet all functional assembly requirements.
✅ VDI 24# Mold Finish
The mold cavity is finished to the VDI 24# standard, producing a uniform, fine-textured surface on the PP overmolded parts. This finish provides a clean, non-tacky, and easy-to-clean surface that meets the hygienic standards of medical applications, while also offering a professional, consistent appearance across all parts.
✅ Optimized for PP Medical Grade Material
Tailored specifically for medical-grade PP material, the mold features optimized flow paths, cooling channels, and venting systems to prevent common defects such as warpage, shrinkage, flow lines, and voids. It ensures complete encapsulation during overmolding, with no trapped air or material gaps that could compromise the safety or performance of the medical infusion tube.

Technical Specifications

Item Details
Mold Type 4+4 Multi-Cavity Overmolding Injection Mold
Mold Steel S136 Stainless Steel
Hardness HRC48–50
Gate System Edge Gate + Tunnel Gate
Core Mold Precision Finished Core
Surface Finish VDI 24#
Suitable Material Medical-Grade PP (Polypropylene)
Part Application Overmolded Components for Medical Infusion Tubes
Mold Life 500,000+ shots
Customization Custom cavity layouts and part geometries available
Medical Infusion Tube connector Over Moulding


Application

This mold is designed for manufacturing overmolded PP components for medical infusion tubes, including:
  • Connector housings and caps

  • Sealing rings and gaskets

  • Flow regulators and control parts

  • Protective covers for infusion tube assemblies

The combination of S136 steel, VDI 24# finish, and dual gate system makes this mold ideal for producing medical parts that require both high hygiene standards and consistent, reliable performance.

Why Choose This Mold for Your Medical Infusion Tube Overmolding?

  • High-volume efficiency: The 4+4 multi-cavity design maximizes production output, reducing unit costs for large-scale medical component manufacturing.

  • Hygienic production-ready: S136 steel is easy to sanitize and corrosion-resistant, supporting cleanroom manufacturing requirements.

  • Clean, burr-free parts: The tunnel gate system eliminates manual trimming, reducing contamination risks in medical-grade production.

  • Consistent surface quality: VDI 24# finish provides a uniform, easy-to-clean surface that meets medical industry standards.

  • Precision fit for overmolding: The finished core mold ensures tight tolerances, guaranteeing perfect fit and function with infusion tube components.


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