The 5 silent profit eaters in wet paint application.
Where does your margin evaporate without anyone noticing?
In wet coating processes, costs disappear every day due to small deviations that have come to be regarded as normal. Without measurement, losses remain invisible.
In reality, costs disappear daily in wet-lacquer processes, often without anyone explicitly naming them. Not because of major calamities, but because of small deviations that have since come to be regarded as “normal”. This is precisely where margin leaks away.
1. Low transfer efficiency and excessive layer thicknesses
Poor or incorrect atomisation, unstable paint supply or non-optimal spraying conditions mean that much of the paint never reaches the product. What does not adhere disappears as overspray in filters and suction. Read also Spray your profits into the filter: the hidden cost of invisible material loss.
Even a few microns too many seems harmless, but translates directly to:
- higher paint consumption
- more solvent
Without understanding actual layer thicknesses and transfer efficiency, this loss remains invisible.
2. Repainting: pure cost and a structural margin-eater
Every relaunch is a direct cost. Point. Regardless of the cause, rework always consumes:
- additional paint and solvent
- additional working time
- extra cabin hours
- and increases the likelihood of quality defects
In wet coating, repainting is not a correction, but a multiplier of costs. As long as it is accepted as “part of the process”, returns will remain under structural pressure. Read also Rework is not “Part of the Job”: the assassin of your margin.
3. The cabin turns, but produces nothing
A wet paint booth costs money as soon as it is running. Even when it is not spraying. Ventilation, air treatment, filtration and sometimes conditioning remain active during:
- long colour changes
- rinse cycles
- waiting for material
- adjustments and consultation
The line may be scheduled as “busy”, but the effective spraying time is often a lot lower. Every minute the cab runs without application is a cost without yield. Read also The Stagnation Paradox: why your paint line sprays less than you think.
4. Disorder in and around the spray booth
A wet painting process is prone to contamination and human error. A messy workplace increases both. Searching for hoses, cups, masking or test panels takes time, but mainly causes variation: variation in settings, in working methods and ultimately in quality. A restless booth rarely yields a stable process. Read also Peace in the Cabin: how an organised workplace prevents mistakes.
5. Steering by feel rather than process data
Many wet paint lines are still driven by experience. This is valuable, but insufficient. Without objective data on effective transfer efficiency, layer thicknesses, rework and cabin utilisation, optimisation remains based on assumptions. And assumptions rarely save costs. Measuring makes visible. Visible makes steerable. Read also To measure is to know.
For questions: contact TLCA.
This text has been prepared based on content from TLCA Coating & Application.
FAQ
1) What are the “silent profit eaters” in wet paint application?
These are recurring losses such as low transfer efficiency, excessive coating thicknesses, repainting, booth hours without application, disorder and steering by feel.
2) Why does loss often remain invisible?
Because small deviations normalise and parameters such as layer thickness, transfer efficiency, rework and cabin utilisation are not structurally monitored.
3) What is the key to recovering margin?
Measure and monitor so that waste becomes visible and you can make targeted adjustments.
In wet paint, margin loss is often in recurring, small deviations. With measurement and follow-up, waste becomes visible and you can make targeted yield adjustments.