Difference between POF film and PE film of heat shrink film packaging machine
Difference between POF film and PE film of heat shrink film packaging machine, in the field of heat shrink packaging, packaging film as the choice of packaging material is crucial, directly affecting the packaging effect and product safety. POF film and PE film are two commonly used heat shrink film materials, each of them has different characteristics and applicable scenarios.
The Material Composition：
POF film: POF (multilayer co-extruded polyolefin heat shrinkable film) is co-extruded from polypropylene (PP) and linear low-density polyethylene (LLDPE) and other materials, with a high degree of transparency and heat sealing performance.
PE film: PE (polyethylene heat shrink film) is a single material made of heat shrinkable film, mainly composed of polyethylene (LDPE, LLDPE, etc.), with good flexibility and impact resistance.
Physical Properties：
POF film: has higher transparency, gloss and heat shrinkage, usually the shrinkage rate can reach 70%-80%. At the same time, POF film has better mechanical strength and tear resistance.
PE film: Although the transparency and gloss are slightly lower than POF film, PE film is excellent in flexibility and impact resistance, suitable for packaging irregularly shaped or fragile products.
The Scope of Application：
POF film: due to its excellent shrinkage performance and mechanical strength, POF film is widely used in electronic products, precision instruments, cosmetics, pharmaceutical products and other products that have high requirements for packaging appearance.
PE film: Due to its good flexibility and impact resistance, PE film is more suitable for packaging beverage bottles, plastic drums, glass products and other daily consumer goods.
Heat sealing performance：
POF film: POF film has better heat sealing performance, the line at the seal is firm and not easy to crack, suitable for high-speed automatic packaging line.
PE film: The heat sealing performance of PE film is also better, but in the high-speed automatic packaging line, it needs higher temperature control to ensure the sealing effect.
Environmental performance：
POF film: POF film is a multi-layer co-extruded material, recycling is more difficult, environmental performance is relatively low.
PE film: PE film is a single material, recycling is relatively easy, environmental performance is better.
Cost Considerations：
POF film: due to the high cost of the production process and materials, the price of POF film is usually higher than PE film.
PE film: PE film production costs are lower, the price is relatively affordable, suitable for cost-sensitive projects.
In summary, heat shrink film packaging machine POF film and PE film have their own advantages, which heat shrink film should be selected according to the specific needs of the product and cost budget to decide. Understanding the characteristics of the two materials can help enterprises more reasonable choice of heat shrink film, to achieve a better balance of packaging effect and cost control. When choosing heat shrink film, should also take into account the compatibility and ease of operation of the packaging machine to ensure a smooth production process and packaging quality consistency.
