QC Basics & Fundamental
Introduction
Flexible packaging is used in industries like food, pharmaceuticals, cosmetics, and FMCG (Fast-Moving Consumer Goods). But do you know how companies ensure that packaging is strong, safe, and defect-free? This is where Quality Control (QC) plays a crucial role. Here, we will start from the basics QC techniques in flexible packaging.
What is Quality Control (QC)?
Quality Control is the process of checking, testing, and ensuring that the final product meets industry standards and customer requirements. QC helps prevent defects, waste, and product failures before packaging reaches the consumer.
Why is QC Important in Flexible Packaging?
Inadequate quality control can cause
leaks in packages, resulting in food or chemical spills.
Weak seals can lead to contamination.
Printing problems include misinformation on labels.
Improper dimensions cause packing and transport complications.
A strong QC system ensures that packaging is reliable, visually appealing, and compliant with regulations.
QC Steps in Flexible Packaging
QC happens at three major stages:
Raw Material Inspection – Checking films, inks, adhesives, and laminates before production.
In-Process QC – Monitoring temperature, pressure, sealing strength, and print quality.
Final Product Testing – Ensuring the finished product meets tensile strength, seal integrity, and dimension standards.
QC vs. QA (Quality Assurance)
| Feature | QC (Quality Control) | QA (Quality Assurance) |
|---|---|---|
| Focus | Detecting & fixing defects | Preventing defects |
| When? | After production | During production |
| Goal | Ensures final product is correct | Ensures processes are correct |
Example: QA ensures the printing machine is calibrated correctly, while QC checks for printing errors etc.
Who is Responsible for QC?
The QC team includes:
QC Inspectors – Checking raw materials & final products.
Machine Operators – Monitoring in-process quality.
Production Supervisors – Ensuring smooth workflow.
Lab Technicians – Performing physical & chemical tests.
Common QC Tests in Flexible Packaging
Seal Integrity Test – Ensuring proper sealing to prevent leaks.
Tensile Strength Test – Checking film durability.
Coefficient of Friction (COF) Test – Ensuring packaging moves smoothly on machines.
Ink Adhesion Test – Preventing print fading or peeling.
Leakage Test – Confirming air-tight packaging.
Homework
Observe packaging products you use daily.
Identify one quality issue (e.g., weak seal, print fade, rough edges).
Think about why it happened and how it can be prevented.
