Stretch film, also known as stretch wrap or pallet wrap, is a thin plastic film that is wrapped around products or packages to secure them and protect them from damage during transportation or storage. Stretch film has many advantages, such as being cost-effective, versatile, recyclable, and easy to apply. But not all stretch film is created equal. There are some characteristics that make a stretch film good and suitable for different applications. Here are some of them:
Thickness
The thickness of the stretch film determines how much force it can withstand and how much protection it can provide. Thicker films are more durable and resistant to punctures, tears, and abrasions, but they are also more expensive and heavier. Thinner films are more economical and lighter, but they may not be strong enough for heavy or sharp objects. The thickness of the stretch film is measured in gauge or microns, and it can range from 37 to 150 gauge or 9 to 38 microns.
Stretchability
The stretchability of the stretch film refers to how much it can elongate before breaking. Stretch film with high stretchability can cover more surface area with less material, which reduces the cost and the environmental impact. Stretch film with low stretchability may require more layers or wraps to achieve the same level of security and protection. The stretchability of the stretch film is measured in percentage, and it can vary from 50% to 300%.
Cling
The cling of the stretch film is the ability of the film to adhere to itself or to other surfaces. Stretch film with high cling can create a tight seal and prevent the film from unraveling or slipping. Stretch film with low cling can reduce the noise and the static electricity generated by the film, which can be annoying or harmful for the workers or the products. The cling of the stretch film can be one-sided or two-sided, depending on the preference and the need of the user.
Transparency
The transparency of the stretch film is the degree of clarity and visibility of the film. Stretch film with high transparency can allow the user to see the contents of the package or the product label, which can facilitate identification, inspection, and inventory management. Stretch film with low transparency can conceal the contents of the package or the product label, which can deter theft, tampering, or damage. The transparency of the stretch film can be clear, colored, opaque, or printed, depending on the purpose and the preference of the user.
These are some of the characteristics of good stretch film that should be considered when choosing the right type of film for different applications. By selecting a stretch film that matches the requirements and expectations of the user, one can ensure a safe, efficient, and cost-effective packaging process.
