The use of POF heat shrink film is still relatively common, for POF heat shrink film we are also have a general understanding of some of its characteristics, for different types of differences, we will talk about the POF heat shrink film and other PE/PVC films what is the difference?
PE heat shrink film is widely used in wine, cans, mineral water, a variety of beverages, cloth and other products of the whole collection of packaging, the product is flexible, impact resistant, tear resistant, not easy to break, not afraid of moisture, shrinkage rate.
PVC film has high transparency, good gloss, high shrinkage rate.
POF surface gloss, good toughness, tear strength, heat shrinkage uniformity and is suitable for automatic high-speed packaging and other characteristics, is the traditional PVC heat shrinkable film replacement product.
Commonly used heat shrink film PVC heat shrink film and POF heat shrink film
These two kinds of shrink film have some differences in material, appearance, performance, price and so on.
- Material difference
PVC heat shrink film is generally made of polyvinyl chloride resin, and add plasticizers and other chemical reagents, after heating and dissolving.
POF heat shrinkable film, on the other hand, is made of high-density polyethylene and low-density polyethylene resins through a multi-layer co-extrusion process. This process can control the performance of the film, so that it has high transparency, high shrinkage, good toughness and other characteristics. - Different appearance
The appearance of PVC heat shrinkable film is white or milky white, and there may be some bubbles or imperfections on the surface. POF heat shrinkable film is transparent or translucent, the surface is smooth, and flat, with no bubbles and defects. - Different performance
PVC heat shrinkable film has better strength and toughness, but the shrinkage rate is lower, usually around 20% to 30%. In addition, due to the non-degradability of PVC material, this shrink film has a certain degree of pollution to the environment.
POF heat shrinkable film has relatively lower strength and toughness, but higher shrinkage rate, generally around 60%~70%. In addition, due to its multi-layer co-extrusion process characteristics, this shrink film has better tear resistance. - Different prices
As the raw material cost of PVC heat shrink film is low, so its price is relatively low. POF heat shrink film raw material cost is higher, so its price is relatively high.
In short, PVC heat shrink film and POF heat shrink film are different in material, appearance, performance, price and so on. When choosing, you should make comprehensive consideration according to your actual needs and use environment.
The difference between POF heat shrink film and PE heat shrink film
- Shrinkage temperature is different: POF heat shrink film shrinkage temperature is lower, can be achieved at a lower temperature shrinkage, while PE heat shrink film needs a higher temperature to achieve shrinkage.
- different physical properties: POF heat shrinkable film has good toughness and impact resistance, while PE heat shrinkable film is relatively brittle.
- different transparency: POF heat shrink film has a high degree of transparency, can better show the products inside the package, while the transparency of PE heat shrink film is relatively poor.
- different security: POF heat shrink film can withstand harsh environmental conditions, such as high temperature, high humidity, etc., is not easy to break or aging phenomenon, so it has a high degree of security. PE heat shrink film is relatively easy to break or aging.
- Different environmental protection: POF heat shrink film can be recycled and reused, friendly to the environment, while PE heat shrink film can not be recycled and reused, has a certain impact on the environment.
POF/PE/PVC summarized in table form
| Characteristics | POF | PE | PVC |
| Main components | Polyolefin | Polyethylene | Polyvinyl chloride |
| Transparency | High | High | Medium |
| Glossiness | High | Low | High |
| Shrinkage | High (up to 70%) | Medium (up to 50%) | Medium (up to 50%) |
| Heat resistance | Excellent (-50℃~150℃) | Excellent (-50℃~100℃) | Good (-20℃~60℃) |
| Cold resistance | Excellent | Excellent | Poor |
| Tear resistance | strong | weak | strong |
| Air tightness | Good | Good | Excellent |
| Moisture resistance | Good | Excellent | Excellent |
| Printability | Good | Excellent | Excellent |
| Environmental protection | Excellent | Excellent | Poor |
Conclusion
In summary, POF heat shrink film and PE heat shrink film in the shrinkage temperature, physical properties, transparency, safety and environmental protection, are obvious differences. When choosing to use, you need to choose according to the actual situation and specific needs.