Requirements for aluminum foil stretch packaging film

Aluminum foil stretch packaging film is favored and used more frequently in hardware, chemical and pharmaceutical industries. Why? In fact, it is related to its performance requirements. Next, we will introduce what requirements the aluminum foil stretch packaging film needs: 　　 1. Self-adhesiveness: by processing a smooth and glossy film on the surface, or using additives that increase adhesion, The surface of the packaging film produces a moisturizing effect, thereby improving adhesion, so that the packaging product can be tightened without loosening.　　2. Toughness: Toughness is the comprehensive properties of packaging film resistance to puncture and tear. The value of the degree of tear resistance should be taken horizontally, because tearing in this direction will loosen the package, and even if the tear occurs longitudinally, the package can still remain firm.　　3. Stress retention: It refers to the degree to which the tension applied to the packaging film can be maintained during the stretching and wrapping process. 4. Tensile performance: it is the ability of the film to produce elastic elongation after tensile force. Although longitudinal stretching is beneficial, excessive stretching will make the film thinner and easy to tear, and increase the tension applied to the package .　　5. Allowable stretch: Allowable stretch varies with different uses. The larger the allowable stretch, the smaller the amount of packaging and the lower the packaging cost.　　 The above are the requirements of aluminum foil stretch packaging film. I hope that through the introduction of this issue, you can deepen your understanding of the product. Thank you for watching our sharing. If you want to learn more about it, please continue to pay attention to this site. Author: one on dr: product knowledge, food packaging films