How to name defects so two shifts use the same word
Keep the name sheet at the press. Each kind of defect keeps one name. A new name goes on the sheet before anyone uses it.
Both shifts must use the same set of defect names. Put the names on one sheet: what you see, what to call it, and what not to call it. Without that sheet, the day shift’s doctor blade line and the night shift’s ink streak become two trends, and nobody can see that the blade should be changed.
Why it is judged this way
A trend count depends on the same word. Too many words and the pareto chart scatters. First fix the ten most common. Put the rare ones under “other” and keep the image. Do not let each person invent a word.
What to compare
| What you see | What to call it | What not to do |
|---|---|---|
| The word on the sheet is used | It can be counted | A new word spoken on the spot |
| Two different things share one word | Split them | Do it to save trouble |
| A new thing is not on the sheet | Keep the image and add the name the next day | Write it down any way |
At job change or when a roll is opened
- Print a name sheet both shifts can see.
- Match the latest ten defect images to the names.
- If they do not match, change the sheet or the name. Do not run two sets side by side.
