Efficiency and economy:
Large roll production in tons reduces costs; downstream can flexibly slice according to demand, minimizing waste.
Processing flexibility:
Provides standardized substrates for subsequent processes such as printing, laminating, and bag-making.
Logistics convenience: The roll form takes up less space than finished bags, facilitating transportation and storage.
Misconception 1:
"The thicker, the stronger": An overly thick film may lead to poor heat sealing, increased costs, and heavier load on the packaging machine. The optimal thickness should be selected based on test data.
Misconception 2:
"The lower the price, the better": Low-priced films may use recycled materials or inferior additives, posing a risk of migration and contamination, which can affect product safety and brand reputation.
Misconception 3:
"Just buy any film and it will work": Different batches and brands of films may have different processing parameters such as heat sealing temperature. When changing suppliers, the equipment must be re-tuned and tested.
