1*8 Cavity PP Material Large Submarine Gate S136 HRC48-52 Steel Polished Cavity T- Cylinder Tooling Mould

1*8 Cavity PP Material Large Submarine Gate S136 HRC48-52 Steel Polished Cavity T- Cylinder Tooling Mould

This high-efficiency 1×8 cavity PP T-cylinder medical injection mold is custom-engineered for mass production of transparent plastic T-shaped connectors and cylindrical adapters used in medical fluid/gas delivery systems. Built with premium S136 stainless steel (core and cavity, heat-treated to HRC48-52) and equipped with large submarine gate system and polished mold surfaces, this mold ensures consistent filling, smooth demolding, and long service life for biocompatible PP medical components. It is designed to meet strict medical-grade cleanliness, dimensional accuracy, and regulatory compliance requirements.

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Model:
25134
Brand:
yixunmold
Code:
20241031

Product Description

Product Overview

This high-efficiency 1×8 cavity PP T-cylinder medical injection mold is custom-engineered for mass production of transparent plastic T-shaped connectors and cylindrical adapters used in medical fluid/gas delivery systems. Built with premium S136 stainless steel (core and cavity, heat-treated to HRC48-52) and equipped with large submarine gate system and polished mold surfaces, this mold ensures consistent filling, smooth demolding, and long service life for biocompatible PP medical components. It is designed to meet strict medical-grade cleanliness, dimensional accuracy, and regulatory compliance requirements.

Core Mold Specifications

Parameter	Details
Product Name	1×8 Cavity PP Medical T-Cylinder Injection Mold
Cavity Configuration	1×8 multi-cavity (8 parts per cycle)
Molding Material	Medical-grade PP (Polypropylene)
Core & Cavity Steel	S136 Stainless Steel
Steel Hardness	HRC 48-52 (Pre-hardened & tempered)
Gate System	Large Submarine Gate
Cavity Finish	High-precision polished surface
Application	Medical tubing connectors, cross/T-joints, fluid delivery adapters
Key Advantages	High efficiency, zero trimming, corrosion-resistant, medical-compliant

Key Mold Design & Technical Advantages

1. 1×8 Multi-Cavity High-Volume Production

The 1×8 cavity design delivers 8 identical medical connectors in a single injection cycle, significantly boosting production output and reducing unit manufacturing costs. The balanced runner layout ensures uniform melt distribution across all cavities, eliminating part-to-part variation and ensuring consistent dimensional accuracy for critical medical fittings.

2. S136 Stainless Steel (HRC48-52) for Medical Durability

Corrosion Resistance: S136 stainless steel offers exceptional resistance to corrosion and oxidation, making it ideal for medical applications requiring repeated sterilization (gamma/EtO).
Long Service Life: Heat-treated to HRC48-52, the mold maintains high hardness and wear resistance, preventing cavity degradation even with continuous production of PP parts.
Superior Polishability: The steel’s fine grain structure supports mirror-polished cavity surfaces, ensuring transparent PP parts have clear, defect-free finishes suitable for visual inspection in medical use.

3. Large Submarine Gate System for Clean, Efficient Molding

The large submarine gate design is optimized for PP medical parts:

Balanced Flow: The enlarged gate ensures fast, uniform melt filling, eliminating short shots or flow marks on the part.
Automatic Gate Break: The hidden gate separates automatically during ejection, leaving no visible gate residue and eliminating the need for manual trimming. This reduces contamination risks and labor costs, critical for sterile medical component production.
Low Shear Stress: The gate geometry minimizes shear heat buildup, preserving the biocompatible properties of medical-grade PP resins.

4. Polished Cavity Surface for Medical-Grade Clarity

The mold cavity undergoes precision polishing to achieve a smooth, scratch-free surface finish. This ensures:

Transparent PP parts with crystal-clear clarity, free of flow lines or haze, suitable for visual verification of fluid flow in medical applications.
Easy demolding without damaging delicate connector geometries or introducing particulate contamination.

Mold Performance Comparison

Feature	This S136 1×8 Cavity Mold	Standard Medical Connector Mold
Cavity Efficiency	1×8 high-volume production	≤4 cavities, low output
Steel Grade	S136 stainless steel (anti-corrosion, sterilizable)	Generic P20 or carbon steel (prone to rust)
Hardness	HRC48-52, long-lasting wear resistance	HRC30-35, prone to wear and texture loss
Gate Type	Large submarine gate, automatic break, no residue	Side gate/sprue gate, requires manual trimming
Cavity Finish	Polished, clear parts, no contamination risk	Basic finish, flow lines/haze common
Medical Compatibility	Fully compliant with biocompatible PP molding	May leach contaminants over repeated cycles

Applications & Benefits

This mold is purpose-built for manufacturing medical-grade plastic T-connectors, cross-joints, and cylindrical adapters used in:

IV tubing and fluid delivery systems
Respiratory therapy equipment
Laboratory and diagnostic devices
Sterile fluid transfer assemblies

Key benefits include:

Sterile Compatibility: S136 steel and polished surfaces support repeated sterilization without degradation.
Consistent Quality: 8-cavity balanced design ensures every connector meets tight dimensional tolerances for leak-proof assembly.
Cost Efficiency: High-volume production reduces per-unit costs for medical device manufacturers.
Regulatory Readiness: Molded parts meet medical-grade material and cleanliness standards, supporting regulatory compliance.

Quality & Compliance

All molds are manufactured to ISO 13485-aligned standards, with strict CNC machining, heat treatment, and quality validation. Every mold undergoes full trial testing to verify dimensional accuracy, gate function, and surface finish. We provide complete documentation, including steel material certificates, mold validation reports, and process records, to support customer medical device registration.

FAQ

Q1: Why choose S136 steel for medical PP connector molds?

A1: S136 stainless steel offers excellent corrosion resistance, high hardness, and superior polishability. It withstands repeated sterilization cycles and prevents metal leaching, making it ideal for medical-grade PP molding.

Q2: What are the advantages of a large submarine gate for medical parts?

A2: The large submarine gate ensures balanced melt flow, automatic gate separation, and no visible residue, eliminating manual trimming and reducing contamination risks in sterile medical components.

Q3: How long is the service life of this mold?

A3: With proper maintenance, the S136 steel mold supports 500,000–800,000 shots of medical-grade PP parts, maintaining consistent quality throughout its lifespan.

Q4: Is this mold compatible with other medical plastics besides PP?

A4: While optimized for PP, the mold can also be adapted for other medical-grade plastics such as PE or ABS, with minor adjustments to molding parameters.

T- Cylinder Tooling Mould 1*8 Cavity PP Material Large Submarine Gate Mould Large Submarine Gate T- Cylinder Tooling