📖 What is IPQC and Why It Matters
In-Process Quality Control (IPQC) means monitoring and verifying quality during production, not just at the end. Instead of finding defects after a batch is complete, IPQC ensures every unit, step, or parameter is checked at the right time.
Why manufacturers need IPQC:
Prevention over correction → catch problems before they multiply.
Compliance assurance → required by standards such as ISO 9001, AS9100, IATF 16949, FDA 21 CFR Part 11, HACCP.
Customer confidence → every inspection is traceable to who did it, when, and how.
Continuous improvement → defect logs become a source of process learning.
In a lean environment, IPQC is essential: it reduces waste (scrap, rework), shortens feedback loops, and empowers operators to be active participants in quality, not passive executors.
🧩 The Building Blocks of IPQC in Next Plus
Workflows → Steps → Fields
Workflows are structured processes.
Steps guide the operator through tasks.
Fields in steps capture values (numeric, pass/fail, notes, signatures).
Forms → Fields
Forms are standalone entities with structured fields.
Used for inspections, audits, or defect reporting.
Can be attached to steps, triggered automatically, or assigned separately.
Triggers
Define what happens if conditions are met or failed.
Example: If measurement outside tolerance → open NCR form + notify QA.
Together, these tools let Editors design quality into the process itself.
🔍 Types of IPQC with Practical Examples
Attribute Checks (Pass/Fail)
Editor setup: Add Pass/Fail + photo field in workflow.
Example: In a food packaging line, operators confirm label correctness and upload a photo.
Operator view: One click + photo.
QA value: Traceable evidence for audits.
Variable Measurements (Numeric)
Editor setup: Numeric field with min/max validation.
Example: In electronics assembly, torque must be 9.8–10.2 Nm.
Operator view: Can’t proceed with 9.5 Nm.
QA value: Automatic defect logging, full traceability.
Sampling Inspections
Editor setup: Configure every nth unit/batch for inspection.
Example: In plastic molding, the first piece of each batch is measured.
Operator view: Prompts appear only when needed.
QA value: Reliable statistical checks without slowing throughput.
Process Parameter Monitoring
Editor setup: Link workflow to OPC UA machine data with tolerance rules.
Example: In food processing, cooking temp must stay ≥72°C.
Operator view: No manual input — alerts if machine drifts.
QA value: HACCP compliance with automated logs.
Certified Sign-Offs
Editor setup: Step requires certified inspector signature.
Example: In aerospace welding, only certified QA can sign off.
Operator view: Step blocked until inspector signs.
QA value: Compliance with AS9100.
Defect Logging & Escalation
Editor setup: Trigger to open NCR form on failed check.
Example: In metal machining, surface finish out of spec → NCR form opens.
Operator view: Guided to document defect properly.
QA value: Standardized defect reports, immediate escalation.
🏭 Industry Blueprints for IPQC in Next Plus
🍞 Food & Beverage (HACCP focus)
Key checks: cooking temperature, sanitation, packaging seal.
Setup: numeric fields with validation + OPC UA machine integration.
Operator experience: prompted to record or confirm values per batch.
QA benefit: automated HACCP logbooks with timestamps.
🚗 Automotive (IATF 16949 focus)
Key checks: torque audits, dimensional measurements, label scans.
Setup: inline numeric fields, sampling inspections (e.g., 1/10 parts).
Operator experience: torque values must be in range before proceeding.
QA benefit: SPC-ready data for control charts.
✈️ Aerospace (AS9100 focus)
Key checks: weld inspections, critical dimensions, certified sign-offs.
Setup: steps requiring QA-certified e-signatures.
Operator experience: step blocked until inspector signs.
QA benefit: compliance evidence for every critical process.
💻 Electronics (ISO 9001 focus)
Key checks: solder joint quality, torque of connectors, ESD checks.
Setup: attribute checks (pass/fail + photo) + torque measurements.
Operator experience: guided step-by-step with mandatory inputs.
QA benefit: rapid identification of defect trends across operators or shifts.
⚠️ Common Pitfalls
Overloading operators → balance automation and sampling.
Loose tolerances → miss real issues; too strict → false alarms.
Unlinked forms → defects get logged without context. Always connect NCRs to work orders.
Generic fields → design forms that capture the right defect details (lot, supplier, root cause).
✅ Key Takeaways
Editors are the architects of in-process quality in Next Plus.
Operators see clear, enforceable checks they can’t skip.
QA Inspectors receive clean, validated, traceable data.
Managers can prove compliance instantly with dashboards and exports.
Next Plus offers the complete IPQC toolkit:
Workflows → guide operators through required checks.
Forms → capture structured data.
Validation rules → prevent incorrect entries.
Triggers → escalate issues automatically.
Certifications → enforce role-based sign-offs.
OPC UA → automate machine parameter monitoring.
Dashboards → analyze trends and demonstrate compliance.
When you design IPQC thoughtfully, you’re not just preventing defects — you’re embedding quality as a living part of every process.