Common application problems of flexible packaging composite films include the following:
1. Appearance problems: including discoloration, bubbles, wrinkles, delamination, etc.;
2. Composite strength problems: including poor strength after maturation (even delamination), aluminum plating or ink transfer, poor strength at the heat seal (even delamination), poor strength after high temperature sterilization (even delamination), significant attenuation (or even delamination) after room temperature or high temperature placement, etc.;
3. Application problems: According to different application scenarios of composite films, there may generally be problems such as poor media resistance, appearance discoloration, and composite strength attenuation during the shelf life.
