What are the differences in performance between different materials of stretch film?
Publish Time: 2024-10-21
Stretch film has a wide range of applications in the field of packaging, and there are significant differences in the performance of stretch films of different materials.
First, in terms of tensile strength, stretch films with polyethylene as the main material usually have higher tensile strength, which can tightly wrap items during packaging and provide good fixation and protection. While stretch films made of polyvinyl chloride have relatively low tensile strength, they may be more outstanding in flexibility and can better adapt to irregularly shaped items.
In terms of elongation at break, some new copolymer stretch films may have higher elongation at break, which means they can be stretched to longer lengths without breaking. In contrast, traditional polyethylene stretch films may have slightly lower elongation at break. Higher elongation at break makes packaging operations more flexible and can adapt to items of different sizes and shapes.
Puncture resistance is also one of the important differences between stretch films of different materials. For example, stretch films with special reinforcing agents added may have stronger puncture resistance and can effectively prevent sharp objects from puncturing the packaging. Stretch film made of ordinary materials may be more easily damaged when facing sharp objects.
Different materials also differ in terms of transparency. Some high-end materials can provide extremely high transparency, making the packaged items clearly visible and easy to check and identify. Some materials may have a slight haze, affecting visibility.
In addition, environmental protection is also an important difference between stretch films of different materials. Biodegradable stretch film has obvious advantages in environmental protection, while traditional plastic stretch film may cause certain pressure on the environment.
In short, stretch films of different materials have differences in tensile strength, elongation at break, puncture resistance, transparency and environmental protection. When choosing stretch film, you should consider these performance differences according to the specific packaging needs and application scenarios, and choose the most suitable material to achieve the best packaging effect and economic benefits.
