Shrink Wrap, also known as Shrink Film, is a plastic material manufactured from polymer plastic, commonly used for packaging and wrapping goods. Applying heat to the Shrink Wrap with an electric or gas heat gun and heat sealer causes the polymer to shrink tightly around the product it is covering. The shrinking of the Shrink Wrap can also be achieved by passing it through a heat tunnel on a conveyor belt to apply heat to the material.
The three most common types of Shrink Wrap used as packaging materials are polyvinyl chloride (PVC), polyethene (PE), and polyolefin (POF). These Shrink wraps differ slightly in their characteristics, such as clarities, thickness, strength, and shrink ratio, making these materials suitable for specific applications.
PVC is one of the most commonly used Shrink Wraps due to its high durability, lightweight and low cost. However, PVC Shrink Wraps also have their disadvantages, mainly surrounding health-related hazards that the material might bring when heated. Since PVC releases strong and harmful odours during these processes, it is best suited for use in well-ventilated facilities.
PE, polyethene, is commonly used for Shrink Wrapping in various forms, including Low-Density Polyethylene (LDPE), Linear Low-Density Polyethylene (LLDPE), and High-Density Polyethylene (HDPE). It is mainly used as protective packaging due to its high strength and durability. However, the material has downsides, which are lower than the other types, shrink rate and lower clarity.
The POF, polyolefin, is another type of Shrink Wrap around the world due to its robust characteristics and versatility. It features higher durability and clarity than other types of shrink film. Besides, POF is manufactured from fully recyclable material, making it an excellent choice for environmentally conscious users. The POF Shrink Wrap has also proven and demonstrates quality results in the shrink rate. The only downside of the material is the higher cost compared to other types of Shrink Wrap.