Film

Films used for Vertical Form Fill and Seal (VFFS) packaging are primarily flexible, customizable, and multilayered to provide barrier protection, durability, and a strong seal. The specific type of film depends on the product being packaged, its required shelf life, and the desired final appearance. 

Common types of films used for VFFS packaging include:

  • Laminated films: These are the most common and versatile VFFS films. They combine multiple layers of different materials, each providing a specific property such as barrier protection, strength, or printability. Laminates offer superior barrier protection against oxygen, moisture, and light, which extends the shelf life of perishable goods.

  • Polyethylene (PE): A flexible and durable material that is often used as the sealant layer in laminated films. PE films can be engineered for high-speed machinery and specific needs like clarity or strength.

  • Polypropylene (PP): This material is lightweight and resistant to moisture, making it a good choice for packaging dry goods like snacks.

  • Polyester (PET): A strong, heat-resistant film that is frequently used in multi-layer laminations for added protection.

  • Metallized films: Often featuring a vacuum-deposited aluminum layer, these films offer excellent barrier properties against oxygen and moisture, and provide a metallic finish for a high-end look.

  • Nylon barrier films: These films provide a reliable barrier against moisture and oxygen and are often used for "hot-fill" applications, such as for packaging soups, sauces, or ground meats. They are also flexible and puncture-resistant, making them suitable for items with sharp or hard components.

  • Monolayer films: Made from a single layer of a plastic like polyethylene, these are an economical option for products where high barrier protection is not as critical. They are often used for bulk industrial products or items with short shelf lives. 

Factors in choosing a VFFS film

The optimal film for a specific application depends on balancing the product's needs with the packaging process and marketing goals. Key factors to consider include: 

  • Barrier properties: What protection does the product need from oxygen, moisture, light, or aroma transfer? Perishable foods will require high-barrier films, while dry products like rice may require only a moisture barrier.

  • Product type: The film must be compatible with the product's physical state.

    • Dry goods: PE, PP, or laminated films are common for products like snacks, powders, and cereals.

    • Liquids/sauces: Specialized nylon or co-extruded barrier films may be needed to handle hot-fill processes and prevent leaks.

    • Fragile items: Films with high puncture resistance are essential to protect delicate or bone-in products.

  • Machine specifications: VFFS equipment requires films with specific properties for optimal performance, including appropriate friction levels, stiffness, and sealability.

  • Durability: The film must be strong enough to protect the product during storage and transportation.

  • Appearance: For retail products, factors like high clarity, custom printing, and special finishes are important to attract consumers.

Sustainability: Sustainable options, such as recyclable PE films, are available for companies seeking to improve their environmental profile