How to tell pinholes apart on a food web
On a food web, tell pinholes apart like this: a single void is larger, and there are often only a few. Until you can tell them apart, do not adjust the press for the wrong cause. A solid holds many white spots the size of a pin tip.
On a food web, tell pinholes apart like this: a single void is larger, and there are often only a few. Until you can tell them apart, do not adjust the press for the wrong cause. A solid holds many white spots the size of a pin tip.
Name it wrong and you adjust the wrong place
A solid holds many white spots the size of a pin tip. If you treat it as another defect, you skip this step: on film, check corona and viscosity first, and do not add ink across the board. On a food web the ingredient list and the heat-seal area decide whether it ships. They do not decide what it is called.
How to tell them apart
| What you see | Closer to | How you separate them |
|---|---|---|
| Many pin-tip white spots in the solid. | Pinholes | Naming it from one white spot |
| A single void is larger, and there are often only a few. | Handle it as that other defect | Using the same adjustment |
| The spot sits on the ingredient list or the heat-seal area | Hold this area first | Ignoring the position just to name it |
Confirm it on the spot
- Look by eye or with a loupe: many pin-tip white spots in the solid.
- Rule it out: a single void is larger, and there are often only a few.
- On film, check corona and viscosity first. Do not add ink across the board.
