Syringe Moulds
Medical syringe moulds determine the dimensional stability, wall uniformity, and cycle economics of disposable injection systems. taizhoumould.net engineers production-grade tooling configured for automated cleanroom environments, integrating high-cavitation layouts with balanced thermal control.
Barrels
Strict concentricity control to eliminate wall-thickness variation; exact Luer lock or Luer slip geometry.
Plungers
Optimized rib thickness to prevent friction drag and seal binding inside the barrel.
Gaskets (TPE/Rubber)
Clean-cut sealing lips matched to specific elastomer shrinkage rates.
Product Specifications
|
Specification Metric |
Standard Configuration |
Custom Options |
|
Component Range |
1ml, 2ml, 3ml, 5ml, 10ml, 20ml, 50ml |
Custom volumes, safety-shield variants |
|
Cavity Count |
16, 24, 32, 48, 64 cavities |
Up to 96 cavities per machine tonnage |
|
Core & Cavity Steel |
ASSAB S136, Bohler M330 (HRC 48-52) |
UDDEHOLM, Carpenter stainless variants |
|
Mold Base |
P20, DIN 1.2738, or customized LKM bases |
Pre-machined high-rigidity alloy plates |
|
Hot Runner |
Husky, Incoe, or Yudo valve-gate systems |
Open nozzle or thermal-pin setups |
|
Ejection |
Stripper plate + air valve + pin combination |
Synchronized servo-driven ejection |
|
Expected Tool Life |
>= 3,000,000 production cycles |
Verified via thermal fatigue testing |
Product Advantages
Concentricity Control: Inter-lock positioning blocks restrict core shift to under 0.01 mm, preventing wall deviation and needle misalignment.
Flash Elimination: CNC milling tolerances within +/- 0.005 mm and optical fitting prevent parting line flash on graduation lines and nozzle tips.
Balanced Thermal Management: Conformal cooling channels maintain surface temperature variance within +/- 1 degree C to stabilize cycle times.
Valve-Gate Integration: Sequential valve-gating eliminates vestige marks and flow lines on medical-grade polypropylene (PP).
Quality Control & Inspection
Steel Traceability: Mill test certificates (MTC) verify chemical composition and hardness prior to cutting.
Dimensional Metrology: CMM and optical comparators check electrode precision, cavity dimensions, and pin alignment.
Pressure Testing: 10 bar water-circuit tests check internal cooling line integrity.
T1 Injection Trial: Qualification runs record cycle time, injection curves, and 100-piece Cpk dimensional analysis using client-specified resin.
Cleanroom Preservation: Moulds undergo ultrasonic cleaning, degreasing, and anti-rust application, then sealed in anti-static, moisture-barrier vacuum packaging for ISO Class 7/8 environments.
Customization & Engineering Support
DFM Analysis: Engineering review covers draft angles, gate locations, sink mark risks, and volumetric shrinkage before steel cutting.
Machine Interfacing: Footprints, locating rings, and knockout patterns match specific press brands (e.g., Netstal, Engel, Haitian).
Interchangeable Inserts: Precision-ground cavity inserts allow rapid maintenance replacement without removing the mould base.
Applications
3-part and 2-part mass production configurations.
Tooling formed to exact 6% taper dimensions complying with ISO 80369-7.
Slide mechanisms and collapsible cores for retractable needle sleeves.
Micro-component cavities requiring sub-millimeter precision.
After-Sales & Technical Support
Documentation
Complete delivery includes 2D/3D assembly drawings, hot runner wiring diagrams, and steel test certificates.
Spare Parts Kit
Complimentary replacement set of core pins, ejector pins, heating elements, and thermocouples included.
Diagnostic Assistance
Remote video support for maintenance troubleshooting and parameter tuning.
FAQ
Q: What is the standard tooling lead time?
A: 45 to 65 days depending on cavity count and hot runner complexity, covering DFM sign-off, machining, T1 trial, and report submittal.
Q: Which resin grades are supported?
A: Medical-grade polypropylene (PP) such as Borealis or SABIC equivalents. Shrinkage allowances are calibrated directly to the client's supplied resin MFI.
Q: How is parting line flash prevented?
A: Optical blue-dyed fitting and five-axis finishing ensure shut-off pressures distribute evenly across all cavities under high injection pressure.
Q: Are moulds compatible with cleanroom automation?
A: Yes. Ejection systems integrate standard mechanical or electrical interfaces for robotic pick-and-place arms in ISO Class 7/8 cleanrooms.
Q: What steel is used for long production runs?
A: ASSAB S136 or Bohler M330 stainless steel hardened to HRC 48-52 to resist polymer corrosion and abrasive wear over 3 million cycles.
Q: What does the T1 trial report contain?
A: Sample shots from every cavity, a Cpk dimensional report, pressure logs, cooling charts, and cycle-time optimization recommendations.
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