What is Not Productive Time (NPT)? Reasons of NPT. Why to Measure NPT in Garments Industry?

Nonproductive time refers to the time that an operator spends not producing any garment (standard minutes such as'set up time') is referred to as idle time. Non-productive time is measured in the garment manufacturing industry in order to determine how much standard time is lost due to machine downtime.

 

Why to Measure NPT

✔ To know the source of non productive time
✔ To make an analysis and to present to all to reduce it.
✔ To keep record so that after development can compare.

Reasons of NPT

✔ Line setting and Machine setting delay for it.

✔ Input not available

✔ Machine Breakdown 

✔ Cutting not available 

✔ Power failure 

✔ Quality Issue

✔ Capacity Issue

✔ Input Delay

✔ Trim accessories not available

✔ Change of Feeding Plan

✔ Technical problems