UPM Raflatac Europe > Troubleshooting > Converting > A4 > Matrix brakes off during converting

Matrix brakes off during converting

Cause

Releasable angle of matrix may be wrong for A4 sheets.

Action

With A4 products, the required pull-off strength is double that of normal reel products.

1. Check your die cutting tools - is the tool worn or the wrong kind? Please contact the supplier of your die cutting tools to get tools of the right dimension. You can get the material specifications from Raflatac.

2. A low angle during matrix separation requires a smaller force than matrix at a higher angle.

A smaller separation roll needs less force.

A4 sheets curling when end users take the sheets out of the pack »
Die cutting tool cuts also the backing paper »
Die cutting tool does not cut the face paper properly »
Die cutting tool does not cut the face paper properly in vertical direction »
Laminate curling in cross direction during the converting process »
Laminate curling in machine direction during the converting process »
Laminate curling when the face is over printed with water based ink, in water flexo for example »
Matrix brakes off during converting »