1. When selecting heat sealing conditions, choose based on the structure and heat sealing state of the composite film, or improve the heat sealing method by cooling immediately after heat sealing.
2. Regularly check the shelf life and storage conditions of the heat sealed film, paying attention to old batch numbers or films that have been heat sealed.
3. Enhance the thickness of the heat sealing film.
4. Adopting insulation aging to promote adhesive hardening can improve the strength and heat resistance of the composite film.
5. Change the type of heat sealing film and choose an inner sealing film with anti pollution heat sealing properties.
