Products stored in aluminum foil bags generally have a short shelf life under natural conditions, and need to rely on vacuum or aluminum foil bags to extend the shelf life. However, the aluminum foil bag sometimes swells due to various reasons, so how to solve it? 1. Factors of aluminum foil bag One of the…
Because OPP film and CPP film are similar in pronunciation and written, often customers cannot distinguish them. Today, an article analyzes the difference between OPP film and CPP film for everyone. performance: CPP: CPP multilayer co-extruded cast film. It has the characteristics of good transparency, high gloss, good stiffness, good moisture resistance, excellent heat resistance,…
Flatness is one of the basic requirements for plastic flexible packaging, but in the actual production process, after the bag is heat-sealed, wrinkles are prone to appear at the seal, which affects the appearance and utilization rate. So how to avoid this problem? 1. Material issues If the material is not temperature-resistant enough, the sealing…
