Stretch Film Guide: Types, Uses & Best Practices

Stretch film is one of the most common materials used to contain palletized loads for storage, handling, and transportation. Applied correctly, it helps hold cartons and products together, reduce load movement, and provide protection from dust, dirt, and incidental moisture exposure.

Choosing the right stretch film requires more than selecting a gauge. Film construction, load shape, puncture risk, containment requirements, application method, prestretch, equipment, and wrap pattern all affect performance. This guide explains the major types of stretch film, common applications, and the factors to consider when choosing a film for your operation.

What Is Stretch Film?

Stretch film is a highly stretchable plastic film commonly made from linear low-density polyethylene, or LLDPE. It is wrapped around products or palletized loads under tension so the film's elasticity and cling help contain the load.

The force the applied film exerts on the wrapped load is commonly referred to as containment force. Effective containment depends on the film and how it is applied. Film properties, prestretch, wrap pattern, number and location of revolutions, overlap, load geometry, and application force can all influence the finished pallet.

Stretch film is widely used in warehouses, manufacturing plants, distribution centers, retail operations, and other environments where products need to be unitized for movement or storage.

Types of Stretch Film

Stretch films differ in construction, application method, performance characteristics, and intended use. Understanding those differences is more useful than choosing film based on gauge alone.

Hand Stretch Film

Hand stretch film is designed for manual application using a dispenser, stretch-film handle, or other hand-wrapping system. It works well for operations with lower or variable pallet volume, wrapping in multiple locations, or loads that are difficult to run through stretch-wrapping equipment.

Machine Stretch Film

Machine stretch film is designed for compatible semi-automatic or automatic stretch-wrapping equipment. A properly configured machine can provide more repeatable prestretch, film force, overlap, and wrap patterns than manual application, which can improve consistency and help control material use.

Film should always be matched to the equipment. Machine capability, prestretch system, film carriage, load profile, and desired containment all affect film selection.

Blown Stretch Film

Blown stretch film is produced through a blown-film extrusion process. Depending on its formulation, it can provide strong puncture resistance and toughness, making it useful for irregular loads, sharp corners, or applications where film abuse is a concern.

Blown film generally has different clarity, unwind, stretch, and cling characteristics than cast film, so the right choice should be based on the actual load and application rather than assuming one manufacturing process is always stronger or better.

Cast Stretch Film

Cast stretch film is produced through a cast extrusion process in which the film is cooled rapidly on rollers. Cast films are often selected when clarity, quiet unwind, and consistent application are priorities.

They are commonly used for uniform pallet loads and applications where labels or barcodes need to remain visible through the wrapped film.

Pre-Stretched Film

Pre-stretched film is stretched during manufacturing before it reaches the operator. Because less force may be required to apply it, pre-stretched film can be useful in manual wrapping applications where operator effort, film control, and consistent application are priorities.

Performance still depends on the film, load, wrap pattern, and application method, so pre-stretched film should be evaluated against the containment requirements of the pallet.

Colored and Opaque Stretch Film

Colored stretch film can help identify products, separate inventory, organize warehouse movements, or make pallet contents less visible. Black and other opaque films are often used when load concealment is important.

Do not assume colored film provides UV protection. If outdoor or UV exposure is part of the application, use film specifically designed and rated for that environment.

Vented Stretch Film and Stretch Netting

Vented stretch film and stretch netting allow greater airflow through a wrapped load than conventional solid film. These products can be useful for applications such as produce, plants, refrigerated products, or other loads where ventilation, cooling, condensation control, or airflow is important.

The required airflow and containment performance should both be considered when choosing a vented material.

Hand Stretch Film vs. Machine Stretch Film

Choosing between hand and machine application depends on more than the number of pallets wrapped each day. Consider labor availability, pallet volume, load consistency, desired throughput, film control, available floor space, equipment investment, and how repeatable the wrapping process needs to be.

There is no universal pallet-per-day threshold at which every operation should switch from hand wrapping to machine wrapping. Evaluate the labor, throughput, consistency, film use, equipment cost, and load-containment needs of your own operation.

Common Stretch Film Uses

Pallet containment is the most common stretch-film application, but stretch film and related products can serve several packaging and warehouse functions.

• Pallet containment: Unitizing cartons and products so they can be handled and transported as one load.
• Warehouse storage: Helping keep products together and reducing exposure to dust and dirt while stored.
• Bundling: Grouping products, cartons, lumber, pipe, or other materials for handling or storage.
• Distribution: Helping maintain load containment as products move between manufacturing plants, distribution centers, stores, and customers.
• Ventilated loads: Using vented film or netting where airflow is important.
• Load identification or concealment: Using colored or opaque films where visual identification or content concealment is useful.

What Stretch Film Can — and Cannot — Do

Stretch film can provide several useful functions when properly selected and applied:

• Contain cartons and products as a unitized pallet load.
• Help reduce movement within a properly built load.
• Protect products from dust, dirt, and incidental moisture exposure.
• Provide additional containment around irregular or mixed loads.
• Support more consistent pallet handling and warehouse movement.

Stretch film does not guarantee a stable pallet by itself. Carton strength, pallet condition, pallet pattern, load geometry, weight distribution, edge protection, strapping when required, wrap pattern, and handling conditions all contribute to unit-load performance.

For more on building the load before it is wrapped, see our Palletizing Best Practices guide.

Gauge Is a Specification — Not a Load Rating

Gauge or film thickness is useful information, but it should not be used by itself to determine whether a stretch film will secure a particular load.

Films with the same nominal thickness can perform differently because of resin formulation, manufacturing process, prestretch capability, puncture resistance, tear behavior, cling, and other film properties.

Load weight is also only one selection factor. A lighter pallet with sharp corners or an unstable profile may be more demanding to wrap than a heavier, uniform load.

Evaluate gauge together with:

• Required containment force.
• Load shape and stability.
• Sharp edges and puncture risk.
• Film stretch and prestretch characteristics.
• Wrap pattern and number of revolutions.
• Hand or machine application.
• Equipment compatibility and settings.
• Transportation and storage conditions.

Best Practices for Stretch Wrapping

There is no single wrap pattern that works for every pallet. The goal is to create adequate, repeatable containment for the actual load without crushing products or applying unnecessary film.

• Build a stable pallet first: Stretch film cannot correct a poorly stacked or structurally unstable load.
• Use the correct film: Match the film to the load profile, puncture risk, wrapping method, equipment, and required containment.
• Apply consistent tension: Film should provide adequate containment without crushing cartons or damaging products.
• Set the wrap pattern for the load: Overlap, revolutions, top wraps, bottom wraps, and reinforcement should be based on actual load requirements rather than a fixed universal formula.
• Pay attention to the pallet connection: Where appropriate, the wrap pattern should help maintain the relationship between the load and pallet without creating unsafe film tails or interfering with pallet handling.
• Protect vulnerable corners: Sharp or irregular edges may require edge protectors, different film, or additional reinforcement.
• Check the finished pallet: Look for film breaks, loose areas, crushed cartons, corner cutting, poor tail retention, or load movement.
• Store film appropriately: Follow manufacturer storage recommendations and protect rolls from excessive heat, direct sunlight, contamination, or damage.

For operations using stretch-wrapping equipment, film and machine settings should be evaluated together. Prestretch, film force, carriage speed, turntable or arm speed, overlap, and revolutions can all affect containment and film consumption.

How to Choose the Right Stretch Film

Start with the load and application rather than a predetermined gauge. The best stretch film is the one that delivers the required containment and protection consistently within your wrapping process.

Consider these factors:

• Load profile: Is the pallet uniform, irregular, unstable, tall, short, or mixed?
• Load weight and distribution: Consider total weight along with how that weight is distributed across the pallet.
• Puncture risk: Sharp carton corners, exposed product edges, lumber, metal parts, and irregular loads may require greater puncture resistance or edge protection.
• Containment requirements: Determine how much holding force the load needs throughout storage, handling, and transportation.
• Application method: Select film designed for hand application or for the specific stretch-wrapping equipment being used.
• Prestretch: Understand how the film and equipment are designed to stretch the material during application.
• Transportation environment: Consider vibration, multiple handling points, load transfers, transit duration, and other distribution conditions.
• Storage environment: Temperature, sunlight, dust, moisture, and outdoor exposure may require different film characteristics.
• Visibility or identification: Clear, colored, opaque, or specialty films may be useful depending on scanning, inventory, concealment, or identification requirements.
• Total cost per wrapped pallet: Compare film use, labor, equipment, breaks, damage, and consistency rather than evaluating roll price alone.

Stretch Film vs. Shrink Film

Stretch film and shrink film are sometimes confused, but they perform different jobs. Stretch film is applied under tension and relies on elasticity and cling. Shrink film is placed around a product and then exposed to heat so the film contracts around it.

If you're comparing the two materials, see Stretch Film vs. Shrink Film: What's the Difference? for a side-by-side explanation of their applications and packaging methods.

Stretch Film as Part of a Load-Securement System

Stretch film is only one component of pallet load securement. Depending on the shipment, edge protectors, strapping, top sheets, pallet covers, anti-slip materials, or other packaging components may also be appropriate.

Our Palletizing & Load Securement Supplies resource explains how these materials can work together as part of a complete palletizing system.

Need Help Choosing Stretch Film?

Packaging HERO offers hand stretch film, machine stretch film, pre-stretched film, specialty films, dispensers, and other pallet-wrapping supplies for a wide range of warehouse and shipping applications.

If you're comparing films, evaluating a pallet-wrapping process, or trying to improve load containment, Contact Packaging HERO to discuss your application.

Frequently Asked Questions