Zipper Bonding - While Running
It appears that there is an issue with weak bonding, insufficient pin adhesion, or complete failure in the singlefacer and double backer bonding process related to paper. The root causes of this issue could be varied, but it is important to identify and address them to ensure the quality of the end product.
One possible cause could be medium with significantly higher flotcrul (water drop) than what is normally run at the plant. In this case, it is recommended to reduce the viscosity at single facer and use an alternate supplier if possible. This will ensure that the flotcrul issue is resolved and the bonding process works effectively.
Another possible cause could be higher density liner, which can be addressed by increasing starch content and reducing overall combining temperature. This will help to ensure that the bonding process takes place effectively, improving the overall quality of the end product.
It is important to identify the root cause of the issue and take corrective measures to ensure that the singlefacer and double backer bonding process works effectively. This will help to avoid any quality issues and ensure that the end product meets the desired standards.