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The Battle of the Plastic Films: Stretch Film vs Polyfilm

Stretch Film vs Polyfilm

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The battle is on! The fight to determine the best plastic film for your packaging needs: Stretch Film or Polyfilm. Which will be the victor? Join us as we explore the differences between the two and determine which is best for your needs.

In the battle between plastic films, stretch film and poly film go head-to-head. Stretch film is a more durable, stretchable plastic wrap that provides superior protection, while poly film is a thinner, less imperishable, non-stretchable plastic wrap. Both have their uses, but which will reign supreme?

The Battle of the Plastic Films is on! Stretch wrap or blown film go head to head in this epic showdown. Which one will come out on top? Find out who wins in this battle of Plastic Films!

Definition of Stretch Film

Stretch film is a highly elastic plastic film used in different packaging applications. Stretch films are most commonly used to bundle and secure items together, but it can also be used to wrap and protect products during shipping, storage, and handling. 

bundling film

The cast stretch film is made of linear low-density polyethylene (LLDPE) and is stretched to a certain length and thickness to provide the desired strength and level of cling. Stretch films are economical and reliable packaging films solution that helps to reduce product damage that has sharp edges and limit pilferage.

Definition of Polyfilm

Polyfilm is a thin plastic film material that is made from a polymer resin, typically used in packaging and labeling applications. Polyfilm can be used to protect packaged items from corrosion, dust, moisture, and other environmental factors. 

It is possible to improve a product’s appearance, strength, and durability and additionally to build a barrier between the product and its container. Polyfilm is also used in medical, automotive, and agricultural applications. Polyfilm is a versatile and economical material that is available in different colors, textures, and sizes.

Uses of Stretch Film

A. Packaging and Wrapping

Stretch film is a highly stretchable plastic film that is commonly used for wrapping and packaging items. Stretch films are designed to cling tightly to itself and to the items it is wrapping and packaging, making it an ideal choice for bundling, protecting, and stabilizing items.

Stretch films are also commonly used to secure pallets containing multiple products. When using stretch film, it is important to wrap the items tightly and securely so that the film have tear resistance during transport or handling items that have sharp edges. 

Stretch films can also be used to protect items from dirt, dust, moisture, and other environmental factors. Additionally, it can secure items inside boxes, pallets, and other containers. Stretch films can be used to enclose the products in a barrier of protection, ensuring their security and safety during transportation.

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B. Securing Loads

Stretch film, also known as stretch wrap, is a highly stretchable plastic film that is commonly used to secure loads together. It is often used to unitize pallet loads, but can also be used to bundle smaller items.

Stretch film must be applied with tension, hence a dispenser is required to hold the roll of film. The role of stretch film is placed into the dispenser and the end of the film is attached to the load. The film is then wrapped around the load using the dispenser, stretching it for a tight fit.

For added security, the stretch wrap may be applied in more than one layer or a single layer. The number of layers and the amount of tension applied will depend on the load and the size of the cast film being used.

After being used to secure the load, a stretch film needs to be fastened at the end to prevent unraveling. Using a unique tool created specifically for this can be done, or by using a simple knot on the stretch wrap. Cut the stretch film as well away from the load to prevent the stretch wrap or the cast film from being any further stretched.

Uses of Polyfilm

A. Greenhouse Covering

Using poly film for greenhouse covering is a great way to safeguard your plants from the elements. This cast film or blown film is a lightweight, yet durable material that is designed to withstand extreme temperatures and moisture. 

It is also UV-resistant, which helps to protect your plants from the sun’s damaging rays. The cast film or blown film also helps to maintain the greenhouse’s inside warm during the winter months and cool in the summer months, creating a more consistent environment for your plants.

When installing blown film for greenhouse covering, it is important to ensure that the cast film is properly secured to the framework of the greenhouse. This blown film can be done using staples, nails, or clips. It is also important to ensure that there are no gaps or holes in the poly film or the blown film makes, as this can result in air leakage and heat loss.

B. Vapor Barrier

Polyfilm can be used as a vapor barrier in both residential and commercial applications. This blown film is a type of plastic sheeting that is used to prevent moisture from entering a building, as well as to reduce air infiltration. This blown film is commonly used in applications such as crawl spaces, basements, and attics, as well as in concrete slabs and walls. 

The thickness of the poly film is important in providing an effective vapor barrier, with thicker packaging films providing better protection. A cast film or a blown film should be securely sealed around all edges and seams to ensure an effective barrier. It is important to note that blown film is not a substitute for proper insulation, and should be used in conjunction with other insulation products.

jumbo stretch film roll

Comparison of Stretch Film and Polyfilm

A. Durability

Stretch film is generally more durable than poly film, as the cast stretch film or blown stretch film is made from a thicker plastic material that is designed to provide more strength and support when used to wrap, package, or secure items. 

The thickness of the plastic allows it to provide more resistance against punctures, tears, and other damage than poly film. Additionally, stretch film is designed to be stretched tightly around items, which helps to keep the items secure and protected.

Polyfilm, on the other hand, is usually made from a thinner plastic material and is not designed to provide as much strength as a stretch film. Blown film can be used to wrap and package items, but it does not provide the same level of protection and durability as stretch film. Blown film is generally used for lighter-weight items or items that need to be held in place with a minimal amount of support.

Overall, high performance stretch films are more durable option for packaging and securing items. A stretch wrap is thicker, stronger, and more resistant to punctures and tears than blown film, and it is made to stretch tightly around items to provide a secure fit.

B. Flexibility

Stretch film is a more flexible material than poly film. A stretch wrap is made from polyethylene resin and is designed to stretch, allowing it to conform to the shape of the package. A cast stretch film or a blown stretch film is also designed to stick firmly to the item being wrapped, making it ideal for preserving densely packed packages.

Stretch Film

Polyfilm is made from a different type of plastic, usually polypropylene. Whether it is a cast film or a blown film, it is less flexible than stretch film, but it does still provide some give, allowing it to conform to the shape of the package. While the cling factor is not as strong as with stretch film, the blown film provides a barrier to moisture and dust.

Overall, both stretch film and poly film can provide flexibility and protection for packages. Stretch film has the advantage of stronger cling, making it ideal for keeping items tightly sealed, while blown film provides a better barrier to moisture and dust. Depending on the requirements for the application, either one could be the right choice.

C. Transparency

When comparing stretch film and poly film when it comes to transparency, stretch film is generally more transparent than cast film. Stretch film has a higher degree of clarity due to its thinner construction, which allows light to pass through it more easily and cost savings on the your end. 

Polyfilm, on the other hand, is typically thicker and less film transparent. This is because the cast film is designed to be tougher and sturdier than stretch film and thus, blocks more light from passing through. Any of the blown film makes polyethylene films or stretch film products that will make a high performance film that has a feature of tear resistance and good for flexible packaging.

You can purchase either a blown film or a cast film from Jindal Poly Films while you can buy stretch wrap at Paragon Films. Both have good volume sales when ti comes to producing any of the films that you needed.


The Battle of Stretch Film vs Polyfilm is an ongoing debate with no clear winner. It is essential to consider the application, cost, and environmental impact when selecting the appropriate plastic sheet for a particular purpose. Both films have their advantages and disadvantages and in the final analysis, it is up to the user to decide.

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