Stretch film's self-adhesion mechanism utilizes the softening and deformation properties of polyethylene when heated, creating a specific self-adhesive effect. The details are as follows:
1. The surface of the stretch film is coated with a special adhesive.
2. When heated, the adhesive softens and deforms, coming into contact with the surface of the package, creating a certain degree of adhesion.
3. As the contact area between the stretch film and the package increases, the self-adhesive effect gradually increases.
4. After packaging, the stretch film's adhesive re-solidifies as it cools and dries, creating a long-lasting self-adhesive effect that ensures the safety of the packaged item.