How to record defects so the next shift can find the same spot
For the next shift to find the same spot, the record must include the roll number, the meter count from the start of this roll, the distance from the operator side, which color, and the repeat length. Writing only 'there is a dirt spot' or leaving only a photo with no location means the next shift cannot find it. Photos are supplementary and cannot replace these four numbers.
The next shift must be able to find the same spot. The record must include the roll number, the meter count from the start of this roll, the distance from the operator side, which color, and the repeat length. If you only write “there’s a dirty spot” or leave only a photo with no location, the next shift won’t find it. Photos are supplementary; they cannot replace these four numbers.
What each of the four numbers is for
The roll number tells people which roll to go to; don’t write “the roll from just now.” The meter count is measured from this roll’s own zero point, using the same zero point as the rewinder; otherwise, being off by one splice will make it not match. For the lateral position, write how many millimeters from the operator side; don’t write “slightly left of center.” For the color name, write cyan, magenta, yellow, black, or the spot color name; don’t write “the red one.” For repeating defects, also write the center distance, so the next shift knows which roller to check.
The photo must show the defect and also the mark or color patch next to it, to make alignment easy. If there is only a magnified white spot and you can’t tell which side of the web it is on, the photo has no position.
Minimum to leave behind
| Item | What happens if you don’t write it |
|---|---|
| Roll number and meter count | The rewinder can’t find that section |
| Distance from operator side | Even if you find that meter, you won’t see the spot |
| Color name | You’ll wash the wrong roller |
| Repeat length | Repeating defects will be mistaken for random dirt spots |
Do this first this round
- When you find a defect, first read the meter count and distance from the operator side, then stop the machine.
- For repeating ones, measure one center distance and write it on the same line.
- At handover, hand over this line; don’t just say verbally that there is a dirty spot.
