In medical manufacturing, precision is not optional—it is mandatory. Blood collection
tubes must meet strict standards for sterility, dimensional accuracy, and material
integrity.
This article explores how precision mould engineering plays a vital role in ensuring
patient safety.
Why Precision Matters in Blood Collection Tubes
Blood collection tubes are used directly in clinical diagnostics. Any defect can lead
to:
- Sample contamination
- Leakage
- Incorrect test results
- Regulatory non-compliance
Critical Precision Requirements
Injection moulding is a manufacturing process where molten plastic is injected into a
closed mould cavity, cooled, and ejected as a solid part.
1. Dimensional Accuracy
- Exact inner diameter for vacuum control
- Consistent tube length and wall thickness
- Perfect cap sealing interface
2. Surface Finish Quality
- Ultra-smooth internal surfaces
- Prevents blood clotting or residue buildup
- Enables accurate lab analysis
3. Material Flow Consistency
- Uniform filling avoids weak spots
- Prevents micro-cracks
- Ensures structural integrity
Role of Precision Injection Moulds
High-precision moulds ensure:
- Tight cavity tolerances
- Balanced runner systems
- Stable cycle-to-cycle repeatability
Advanced mould designs integrate:
- Precision-machined cores
- Optimised cooling channels
- Medical-grade hot runner systems
Compliance with Medical Standards
Precision moulds support compliance with:
- ISO medical packaging norms
- GMP manufacturing requirements
- International diagnostic regulations
Consistency in moulding directly translates to reliable, safe medical devices.
Conclusion
Precision mould engineering is the foundation of safe medical disposables. In blood
collection tubes, accuracy at the micron level safeguards patient health and ensures
trust in diagnostic results.