Best Plastic Roll Film for Food Packaging: Materials, Safety & Performance

Choosing the best plastic roll film for food packaging is an important decision for food manufacturers, packaging companies, and brand owners. The right film must do more than simply wrap a product. It needs to provide reliable sealing, appropriate barrier protection, mechanical strength, good printability, and compatibility with the packaging machine.

Different food products also require different packaging performance. Snacks may need strong moisture and oxygen protection, while frozen foods may require excellent flexibility and puncture resistance. Coffee needs protection against oxygen, moisture, light, and aroma loss, while sauces and liquid foods may require strong seals and chemical resistance.

So, what is the best plastic roll film for food packaging?

There is no single film that works best for every food product. The ideal solution depends on the product characteristics, shelf-life requirements, packaging equipment, storage conditions, and required barrier performance.

What Is Plastic Roll Film for Food Packaging?

Plastic roll film is a continuous flexible packaging material supplied in rolls and used to manufacture bags, pouches, sachets, flow-wrap packages, and other flexible packaging formats.

Unlike pre-made bags, roll film allows packaging manufacturers and food producers to form and seal packages during the filling process. This makes it particularly suitable for automatic packaging equipment such as VFFS and HFFS machines.

Food packaging roll film can be produced as:

• Single-layer film

• Co-extruded film

• Laminated film

• Printed roll film

• High-barrier roll film

• Recyclable mono-material film

• Custom-width and custom-thickness film

The final structure can combine different materials so that each layer performs a specific function.

For example, an outer PET layer can provide printing and mechanical strength, while a PE inner layer provides heat sealing. Additional barrier layers such as EVOH, aluminum foil, or metallized film can be incorporated when stronger oxygen, moisture, or light protection is required.

What Materials Are Used for Food Packaging Roll Film?

The best plastic roll film structure depends largely on the materials used. Some of the most common materials include PET, PE, PP, PA, and EVOH.

PET Film

Polyethylene terephthalate, commonly known as PET or BOPET when biaxially oriented, is widely used as an outer layer in flexible food packaging.

PET offers:

• Good mechanical strength

• Excellent dimensional stability

• Good printability

• High transparency

• Good appearance

• Good resistance to heat compared with many polyolefin films

PET is commonly used in laminated structures for snacks, coffee, baked foods, confectionery, pet food, and many other products.

However, PET is generally not used alone as the primary heat-sealing layer in typical flexible pouches. It is often combined with a sealant layer such as PE or CPP.

PE Film

Polyethylene is one of the most widely used materials for food packaging film.

Common PE types include LDPE and LLDPE. PE is valued for its flexibility, toughness, moisture resistance, and heat-sealing performance.

PE is commonly used as:

• Inner sealing film

• Bag-making film

• Flexible packaging film

• Frozen food packaging

• Fresh food packaging

• Bakery packaging

• General food packaging

For many flexible packages, the PE layer is the part that directly contacts the product and creates the final package seal.

LLDPE can also provide good puncture resistance and mechanical strength, making it useful for packaging products that may place greater stress on the package.

PP Film

Polypropylene is another important material for food packaging.

PP offers good stiffness, chemical resistance, moisture barrier properties, and relatively high temperature resistance. It can be used in both rigid and flexible food packaging applications.

BOPP is particularly common in flexible packaging because it provides:

• Good clarity

• Good stiffness

• Good tensile strength

• Good printability

• Good moisture resistance

BOPP is widely used for snack foods, biscuits, bakery products, confectionery, and other dry food packaging applications.

CPP can also be used as a sealing layer, especially where heat resistance and sealing performance are important.

PA Film

Polyamide, commonly called nylon or PA, is frequently used when packaging requires additional toughness and puncture resistance.

PA provides useful mechanical properties and can contribute to oxygen and aroma barrier performance. It is commonly used in structures for:

• Meat

• Seafood

• Vacuum packaging

• Frozen food

• Products with sharp edges

• Modified-atmosphere packaging

PA is often combined with PE because PA provides strength while PE provides reliable heat sealing.

EVOH Barrier Film

EVOH is used when a package requires strong oxygen barrier performance.

Oxygen can negatively affect many food products by accelerating oxidation, flavor changes, color deterioration, and loss of freshness. EVOH can therefore be incorporated into multilayer structures for products that are particularly sensitive to oxygen.

Typical applications may include:

• Meat

• Cheese

• Processed foods

• Snacks

• Coffee

• Ready-to-eat foods

EVOH is normally used as a functional barrier layer rather than as the main structural or sealing layer.

Which Plastic Roll Film Is Best for Different Foods?

The best film depends on the food product and the protection it requires.

These are general examples rather than universal formulas. The final structure should be selected according to the product, filling process, storage environment, and required shelf life.

How Does Plastic Roll Film Protect Food?

A well-designed food packaging film performs several functions at the same time.

Moisture Barrier

Moisture can affect food quality in both directions.

For dry foods such as snacks, biscuits, cereal, and powdered products, moisture entering the package can cause loss of crispness, clumping, or texture changes.

For some fresh products, excessive moisture loss can also negatively affect quality.

Therefore, the moisture barrier of the film should be matched to the food product and its intended shelf life.

Oxygen Barrier

Oxygen can cause oxidation and quality deterioration in many foods.

Products such as coffee, meat, nuts, snacks, and some processed foods may require stronger oxygen protection.

Depending on the application, packaging structures can incorporate materials such as PA, EVOH, metallized films, or aluminum foil to improve oxygen barrier performance.

Light Protection

Light can also affect food quality, especially for products that are sensitive to oxidation or light exposure.

When strong light protection is required, packaging manufacturers may use:

• Metallized film

• Aluminum foil

• Opaque films

• Special multilayer structures

The choice depends on the required level of protection and the desired appearance of the finished package.

Aroma Protection

Aroma retention is particularly important for coffee, spices, snacks, and other products with distinctive flavors or fragrances.

A properly designed multilayer film can help reduce the transfer of oxygen, moisture, and aroma through the package, helping the product maintain its intended sensory characteristics.

What Makes a Food Packaging Film Safe?

Food packaging safety is not determined simply by whether a material is called "PE," "PP," or "PET."

The specific resin grade, additives, inks, adhesives, coatings, processing conditions, and final packaging structure all need to be appropriate for the intended food-contact application.

When purchasing food-grade plastic roll film, buyers should consider:

Food-Contact Compliance

The film should be manufactured using materials and components suitable for the intended food-contact application and target market.

Depending on where the packaging will be sold, different regulatory requirements may apply.

For international packaging projects, buyers should communicate the destination market and intended food application to the packaging supplier before production.

Migration Requirements

Packaging materials can potentially interact with food. Therefore, appropriate materials and formulations should be selected to meet applicable migration requirements.

This is particularly important for packaging that will be used with:

• Oily foods

• Acidic foods

• Fatty foods

• Hot-filled products

• Frozen products

• Long shelf-life foods

Printing Ink and Adhesive Selection

Food packaging safety does not depend only on the plastic film itself.

For laminated and printed packaging, inks, adhesives, coatings, and other components should also be suitable for the intended packaging structure and application.

A professional packaging supplier should be able to discuss the complete structure rather than treating the plastic film as an isolated material.

What Performance Factors Should You Consider?

When selecting plastic roll film for food packaging, material selection is only the first step.

Several performance factors should be evaluated.

1. Heat-Sealing Performance

Reliable sealing is essential for food packaging.

A film with insufficient sealing performance can result in:

• Leakage

• Package failure

• Poor appearance

• Reduced product protection

• Production interruptions

The sealing layer should be compatible with the packaging machine and the required sealing temperature.

2. Tensile and Puncture Strength

The film needs to withstand filling, sealing, transportation, stacking, and handling.

Products with sharp edges or heavy contents may require stronger structures.

For example, vacuum-packed meat and frozen foods can benefit from structures with higher puncture resistance.

3. Oxygen Transmission

For oxygen-sensitive products, oxygen transmission rate is an important specification.

Lower oxygen transmission generally means stronger oxygen barrier performance.

However, the required value depends on the product and the target shelf life. There is no universal oxygen transmission specification suitable for every food.

4. Water Vapor Transmission

Water vapor transmission is another important consideration.

Dry foods generally require strong moisture protection to prevent moisture from entering the package, while other products may have different moisture-control requirements.

5. Film Thickness

Film thickness affects:

• Strength

• Stiffness

• Sealing

• Machine performance

• Packaging cost

• Material consumption

Thicker film is not automatically better.

The objective is to select sufficient thickness for the application while maintaining efficient material use and reliable packaging performance.

6. Packaging Machine Compatibility

Even a high-performance film may not perform properly if it is not suitable for the packaging machine.

Before ordering roll film, confirm:

• Film width

• Film thickness

• Roll diameter

• Core size

• Printing direction

• Sealing method

• Machine speed

• Forming method

• Required sealing temperature

• Registration requirements

This is especially important for VFFS and HFFS packaging systems.

What Are Common Plastic Roll Film Structures?

Different multilayer structures are designed for different packaging requirements.

PET/PE

PET/PE is a common flexible packaging structure.

PET can provide printing, stiffness, and mechanical support, while PE provides heat sealing and moisture protection.

It is suitable for many dry food and general flexible packaging applications.

BOPP/CPP

BOPP/CPP is widely used for snack foods, biscuits, confectionery, and other products where clarity, printability, stiffness, and heat sealing are important.

PA/PE

PA/PE is often selected when stronger mechanical performance and puncture resistance are needed.

It is commonly used for vacuum packaging and products such as meat and seafood.

PET/AL/PE

This type of structure combines PET, aluminum foil, and PE.

It can provide strong protection against light, oxygen, and moisture and is commonly considered for products requiring high barrier performance.

PET/EVOH/PE

EVOH can be incorporated into a multilayer structure when high oxygen barrier performance is required while maintaining a flexible packaging format.

The appropriate structure depends on the food product and the required shelf life.

How to Choose the Best Plastic Roll Film for Your Food Product

Instead of choosing a film based only on price or material name, use a systematic selection process.

Step 1: Identify the Food Product

Start by determining whether the product is:

• Dry

• Moist

• Oily

• Acidic

• Frozen

• Powdered

• Liquid

• Oxygen-sensitive

• Aroma-sensitive

Step 2: Define the Required Shelf Life

A short shelf-life product may not require the same barrier performance as a product expected to remain stable for many months.

The target shelf life should therefore be established before selecting the film structure.

Step 3: Determine Storage Conditions

Consider whether the package will be stored:

• At room temperature

• In refrigerated conditions

• In a freezer

• Under high humidity

• Under high temperatures

• In direct or indirect light

These conditions can significantly influence film selection.

Step 4: Check Packaging Equipment

Provide the supplier with your packaging machine specifications.

This helps determine the correct film width, thickness, sealing layer, roll dimensions, and printing requirements.

Step 5: Determine Barrier Requirements

Decide whether your product needs protection against:

• Oxygen

• Moisture

• Light

• Aroma loss

• Grease

• External odors

This information helps determine whether a basic film structure or a high-barrier laminate is appropriate.

Step 6: Consider Packaging Appearance

For branded food products, appearance is also important.

You may require:

• High-definition custom printing

• Matte finish

• Gloss finish

• Transparent windows

• Metallic appearance

• Special surface effects

The outer film should be selected according to both functional and visual requirements.

Is High-Barrier Plastic Roll Film Always Better?

Not necessarily.

High-barrier film can provide stronger protection, but it may also involve more materials, higher costs, and more complex structures.

For example, a simple dry-food product with a relatively short shelf life may not require an extremely high oxygen barrier.

On the other hand, coffee, fatty foods, meat, or products requiring extended shelf life may benefit from a higher-performance structure.

The goal should be the right level of barrier performance, rather than simply selecting the highest barrier available.

What About Recyclable Plastic Roll Film?

Sustainability is becoming an increasingly important consideration in flexible food packaging.

Traditional multilayer structures can combine several different materials to achieve excellent performance, but some combinations can be more difficult to recycle.

For suitable applications, mono-material structures based primarily on PE or PP can be considered.

However, switching to a recyclable structure should not mean sacrificing essential packaging performance.

When evaluating recyclable plastic roll film, consider:

• Product protection

• Seal performance

• Machine compatibility

• Oxygen barrier

• Moisture barrier

• Puncture resistance

• Printing requirements

• End-of-life recycling requirements

The best solution is the one that balances packaging performance, product protection, material efficiency, and sustainability goals.

How Can Longine Packing Help With Food Packaging Roll Film?

Longine Packing provides custom flexible packaging solutions for food brands, manufacturers, and wholesalers.

Different products require different packaging structures, so the packaging film can be customized according to the application.

Longine Packing can help customers evaluate factors such as:

• Food packaging application

• Film material

• Lamination structure

• Film thickness

• Roll width

• Printing requirements

• Barrier performance

• Heat-sealing requirements

• Packaging machine compatibility

• Packaging quantity and specifications

Whether you need plastic roll film for snacks, coffee, biscuits, frozen foods, pet food, powdered products, or other food applications, choosing the correct material structure is essential for achieving reliable packaging performance.

Conclusion

The best plastic roll film for food packaging depends on the product rather than a single universal material.

PE is widely used for sealing and moisture protection, PP provides useful stiffness and heat resistance, PET offers strong mechanical and printing performance, PA provides toughness and puncture resistance, while EVOH can add strong oxygen barrier performance.

For many food products, the most effective solution is therefore a multilayer plastic roll film in which each layer performs a specific function.

Before placing a bulk order, evaluate the food product, target shelf life, storage conditions, required barrier properties, packaging machine, film dimensions, sealing performance, and food-contact requirements.

By matching the film structure to the actual packaging application, food manufacturers can achieve better product protection, reliable machine performance, attractive packaging, and more efficient packaging costs.

If you are looking for custom plastic roll film for food packaging, Longine Packing can help you develop a suitable film structure based on your product, packaging machine, and production requirements. Contact us to discuss your required material, size, printing, and packaging specifications.