Physical properties of the stretched film
Source：Physical properties of the stretched filmTime：2019-04-15Visitors：
As we all know, stretch film is a kind of packaging material in the logistics industry. With the development of packaging technology in China, the unitized packaging method is applied more and more widely. The stretched film has high strength, good longitudinal ductility, strong resilience and horizontal Good tear resistance, good puncture resistance, good self-adhesive properties, odorless, non-toxic, etc. What are the physical indicators of stretched film?
1. Tension retention: After the stretch film is stretched by a certain ratio, the ratio of the tensile force to the F force value maintained for a certain period of time is maintained by the tensile force.
2. Viscosity: The adhesion between the two films in the stretched or unstretched state of the stretched film.
3. Permanent deformation: the ratio of the length of the stretched film to the original length after stretching a certain ratio.
4. Elastic recovery: The stretched film maintains the state for a certain period of time after stretching a certain ratio, and the ratio of the restored size to the original size after release.
5, anti-piercing: used to indicate the ability of the wound film to resist needle piercing.
6. Transmittance, haze: The stretch film needs to have good transparency in use.
The physical indicators of the above stretched film are shared here. The technical requirements of the stretched film are divided into three parts: size and specification, appearance and physical and mechanical properties.
1. Tension retention: After the stretch film is stretched by a certain ratio, the ratio of the tensile force to the F force value maintained for a certain period of time is maintained by the tensile force.
2. Viscosity: The adhesion between the two films in the stretched or unstretched state of the stretched film.
3. Permanent deformation: the ratio of the length of the stretched film to the original length after stretching a certain ratio.
4. Elastic recovery: The stretched film maintains the state for a certain period of time after stretching a certain ratio, and the ratio of the restored size to the original size after release.
5, anti-piercing: used to indicate the ability of the wound film to resist needle piercing.
6. Transmittance, haze: The stretch film needs to have good transparency in use.
The physical indicators of the above stretched film are shared here. The technical requirements of the stretched film are divided into three parts: size and specification, appearance and physical and mechanical properties.
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