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Shrinkage is one of the most overlooked risks in protective clothing. After repeated industrial washing, poorly designed garments can lose their fit, comfort, and even safety performance. ISO 15797 plays a critical role in controlling shrinkage and ensuring long-term reliability of industrial workwear.
ISO 15797 defines testing methods that simulate real industrial laundering conditions, including high temperatures, mechanical action, and industrial detergents. It is widely used to evaluate how protective garments perform after repeated industrial washing cycles.
Unlike domestic wash tests, ISO 15797 reflects the harsh reality of industrial laundry operations.
Uncontrolled shrinkage can lead to:
Poor garment fit and restricted movement
Reduced comfort and worker acceptance
Exposure of unprotected skin areas
Increased replacement costs
Proper shrinkage allowance ensures garments maintain their intended size and fit throughout their service life.
Garments tested under ISO 15797 are evaluated for dimensional stability after industrial washing and drying. This helps manufacturers design patterns and allowances that compensate for expected shrinkage.
In many cases, shrinkage results are also assessed using ISO 5077, which measures fabric dimensional change after laundering.
For flame-resistant, arc-rated, and anti-static garments, maintaining fit is not just about comfort — it is about safety. Poorly fitting PPE can compromise protection and reduce compliance with safety programs.
Workwear tested according to ISO 15797 offers greater confidence in long-term performance and durability.
Specify ISO 15797 testing in purchase requirements
Ask for shrinkage data after industrial laundering
Choose garments designed with proper shrinkage allowance
Follow recommended washing instructions
These steps help ensure consistent protection and lower lifecycle costs.
Shrinkage allowance is a key factor in industrial workwear performance. ISO 15797 provides a realistic benchmark for evaluating how garments behave after repeated washing. Choosing ISO 15797-tested workwear helps protect fit, comfort, and safety over time.
