Cavity Pressure Measurement in Micro Injection Moulding Tooling
Cavity pressure measurement in micro-injection tooling decouples machine dynamics from cavity fill, eliminating part weight variance and micro-defects.
ISO 13485
Meaning
Formal quality management standards establish controls for the design, manufacturing and traceability of components used in medical devices. Adherence to ISO 13485 requires plastic moulders to maintain rigorous change control, cleanroom environment monitoring and risk management protocols. The framework governs material qualification steps, equipment calibration logs and process validation records across entire product lifecycles.
It stops applying to non medical consumer parts where commercial quality standards like ISO 9001 suffice.
Process Validation
Moulders producing medical components under ISO 13485 must execute formal installation, operational and performance qualifications on every tool and machine combination. Operational qualification defines the stable processing window where wall thickness and tensile strength parameters remain within specification. Using regrind is generally prohibited under strict medical device file submissions unless explicit bio-compatibility testing validates recycled content safety.
Process changes like switching resin suppliers require full re-validation documentation.
Traceability Protocols
Raw resin lot numbers connect directly to cavity production logs and cleanroom particle count records.
Contamination Controls
Cleanroom moulding cells operating under medical standards enforce strict particulate controls to prevent particulate inclusion during injection moulding. Resin delivery lines utilize closed loop pneumatic conveyors to keep ambient shop floor dust out of virgin polymer hoppers. Equipment maintenance schedules require non gassing lubricants and non sloughing ejector pin coatings to protect part purity.
Compliance audits verify that environmental monitoring records remain unbroken across manufacturing campaigns.