Products Description
What PVC shrinkage is
PVC shrink film is a film made of polyvinyl chloride (PVC) resin, which has good shrinkage performance and transparency. During the packaging process, by heating the PVC shrink film, it softens and shrinks the surface of the packaged item, achieving a sealing, protective, and aesthetically pleasing effect.
The optimal shrinkage temperature for PVC shrink film
Generally, the optimal shrinkage temperature for PVC shrink film is between 60°C and 80°C. Within this temperature range, the PVC shrink film can quickly soften and shrink without causing deformation or damage to the packaged item. If the temperature is too low, the PVC shrink film may not shrink sufficiently, affecting the packaging effect. If the temperature is too high, the PVC shrink film may over-shrink, leading to damage to the packaged item.
reason of shrinkage temperature between 60°C and 80°C
Physical Properties and Working Mechanism
The main component of PVC shrink film is polyvinyl chloride resin, which has good fluidity and plasticity at high temperatures, allowing it to soften and shrink quickly.
At the same time, the heating process of PVC shrink film also releases heat, further promoting the shrinkage effect.
However, if the temperature is too high, the molecular chain of the PVC shrink film may excessively fracture, causing the shrink film to become brittle and unable to shrink normally.
1
Thinner shrink film will shrink more easily because of its better thermal conductivity.
2
If the surface of the packaged item is smooth and without obvious irregularities, it can better fit the surface of the packaged item, achieving a better packaging effect.
3
Proper heating time can ensure that the film softens and shrinks fully, but excessive heating time may cause the packaged item to be excessively heated, affecting the packaging quality.
in summary
Summarize
The optimal shrinkage temperature for PVC shrink film is between 60°C and 80°C. Choosing the appropriate shrinkage temperature can ensure the normal shrinkage and packaging effect of PVC shrink film, while also considering factors such as the characteristics of the packaged item, packaging requirements, and production efficiency. Proper use of PVC shrink film can improve packaging quality and production efficiency, providing better assurance for the sale and transportation of goods.
