The cause of the tension of the stretch film
Source:The cause of the tension of the stretch filmTime:2019-03-30Visitors:
The tension of the stretch film is a factor in the quality of our judgment at the time of selection.
Stretch film tension is affected by multiple factors, as described below:
The non-polar polymer has a small free energy and a low surface wet tension, generally about 30 dynes/cm. In general, if the external tension of the object is less than 33 dynes/cm, the ordinary ink or the adhesive cannot be firmly attached, and it is necessary to be surface-treated.
When the aluminum is plated, the transfer of the aluminized layer occurs, and the transfer of the adhesive layer occurs when the glue is applied. The main measure to prevent the corona on the reverse side of the film is to adjust the pressure of the rubber pinch roller before the corona treatment roller. The pressure at both ends of the pinch roller should be consistent and the pressure should be appropriate.
Polyester is a polar polymer with a high surface free energy. However, for high-speed black printing or to increase the bonding between the vacuum aluminum plating layer and the appearance of the BOPET film, it is also necessary to externally treat the BOPET film to further improve the surface wet tension.
When testing the external tension of the wrapping film, a strict dynamic and static balance test must be carried out to ensure that the plastic film enters the corona roller smoothly and prevents the air from being trapped, thereby preventing the phenomenon of reverse corona.
Stretch film tension is affected by multiple factors, as described below:
The non-polar polymer has a small free energy and a low surface wet tension, generally about 30 dynes/cm. In general, if the external tension of the object is less than 33 dynes/cm, the ordinary ink or the adhesive cannot be firmly attached, and it is necessary to be surface-treated.
When the aluminum is plated, the transfer of the aluminized layer occurs, and the transfer of the adhesive layer occurs when the glue is applied. The main measure to prevent the corona on the reverse side of the film is to adjust the pressure of the rubber pinch roller before the corona treatment roller. The pressure at both ends of the pinch roller should be consistent and the pressure should be appropriate.
Polyester is a polar polymer with a high surface free energy. However, for high-speed black printing or to increase the bonding between the vacuum aluminum plating layer and the appearance of the BOPET film, it is also necessary to externally treat the BOPET film to further improve the surface wet tension.
When testing the external tension of the wrapping film, a strict dynamic and static balance test must be carried out to ensure that the plastic film enters the corona roller smoothly and prevents the air from being trapped, thereby preventing the phenomenon of reverse corona.
Recommended Products
Ranked in the same article
- how to use the stretch film technology to r
- How can we get detailed price list?
- Five common quality problems of PE protecti
- Plastic film degradation
- How to guarantee punctual shipment for our
- What is the difference between stretch film
- Testing the permeability of stretch film
- Why insufficient transparency of stretch w
- Electrical wire film VS electrostatic film
- Stretch film temperature requirements
- The elastic characteristics of plastic film
Latest news articles
- Advantage of Stretch film
- The elastic characteristics of plastic film
- Why vacuum packaging materials need stretc
- Method of shortening stretch film
- How to handle the surface of stretch wrappi
- Is PE stretch film suitable for the logisti
- How to solve the bubble in the stretch film
- The characteristics of the stretched film q
- How should the viscosity in the adhesive la
- Enhancing Electrical Safety with Innovative
- How Does Color Affect the Performance and D