CD Curl - Causes and Cures

Presented by Neal Michal, "Converting Expert, LLC"

The boom in e-commerce, food delivery, and sustainability concerns has accelerated the development of paper laminates used for packaging. MD and CD Curl are inherent risks with any laminate. MD curl can be controlled by matching MD Strain. CD Curl is more difficult to resolve as the number of plies increase. This paper will describe a persistent concern with a multi-ply laminate that was corrected by good science and hard work. This paper will describe: o Root cause and contributing factors for CD Curl o Case Study - Three to five ply paper laminate with latex adhesive o Methods used to identify cause o Methods used to mitigate CD Curl