📉 If You Only Track Overall Plant Wastage, You Will Never Know Which Machine Is Quietly Burning Money.

📖 10-min read · Wastage · PPC + Production + Cost

Converting plants often report one plant-level wastage number. That number is useful for management dashboards and almost useless for action. Real control starts when you calculate wastage machine-wise and job-wise with a clear formula.

📌 The Only Formula You Need

Wastage % = (Input − Good Output) ÷ Input × 100

Input and output in the same unit (kg or metres)
Good output = only material that passes quality and is usable downstream
Do this per machine and per major job family

1. Why Plant-Level % Hides the Truth

Printing may run at 12% waste on short jobs while slitting runs at 2%. Averaged together they look “acceptable”. The printing loss never gets fixed because the number looks diluted.

2. Practical Buckets to Track

Setup / start-up waste
Registration and colour waste
Splice and web-break waste
Trim waste at slitting
Rejects after quality check

Typical total converting wastage in many Indian plants sits in the 8–15% band if not tightly managed. Best plants drive major processes well below that with discipline, not luck.

💡 Action rule: Every week, publish machine-wise wastage. The machine with the highest % gets the first investigation — not the loudest opinion in the meeting.

Next → Understanding Efficiency in Converting Plants

📉 अगर आप सिर्फ ओवरऑल प्लांट वेस्टेज ट्रैक करते हैं, तो कभी नहीं जान पाएंगे कौन सी मशीन चुपचाप पैसे जला रही है।

📖 10-मिनट पढ़ें · वेस्टेज · PPC + प्रोडक्शन + लागत

📌 एकमात्र फॉर्मूला

वेस्टेज % = (इनपुट − गुड आउटपुट) ÷ इनपुट × 100

💡 एक्शन नियम: हर हफ्ते मशीन-वाइज वेस्टेज पब्लिश करें। सबसे ऊँचे % वाली मशीन पहले जाँच में आए।

अगला → एफिशिएंसी समझना