Understanding Forming and Non-Forming Film: What’s the Difference

When it comes to packaging, selecting the right film is crucial for ensuring product integrity, presentation, and shelf life. Two common types of films used in packaging are forming and non-forming films. Understanding the difference between these films can help you make an informed decision that suits your specific packaging needs.

What is Forming Film?

Forming film is a type of packaging film that is primarily used in thermoforming processes. This film is designed to mold and shape around products, providing a snug fit that enhances product protection and presentation. Typically made from materials like polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC), forming films are widely used in the food industry, especially for vacuum packaging.

Applications:

Food packaging, such as meats, cheeses, and baked goods.
Medical devices and pharmaceutical packaging.
Consumer goods that require a formed, protective layer.

Advantages:

Excellent barrier properties that protect against moisture, oxygen, and contaminants.
Enhances the visual appeal of the product by providing a clear, molded presentation.
Ensures a secure and tight seal, prolonging product shelf life.

Disadvantages:

Generally more expensive due to the complexity of the material and forming process.
Requires specialized equipment for forming and sealing.

What is Non-Forming Film?

Non-forming film, as the name suggests, is a type of film that does not mold or shape around the product. Instead, it serves as the top or lid in a packaging setup where the bottom layer is a formed film or tray. Non-forming films are typically flat and flexible, making them ideal for covering products that are already placed in a pre-formed base.

Applications:

Lidding film for thermoformed trays in food packaging.
Cover film for medical trays and devices.
Packaging for products that do not require a molded fit.

Advantages:

Cost-effective compared to forming films.
Easy to use with a wide range of products.
Provides a high-quality seal and excellent barrier properties.

Disadvantages:

Does not offer the same level of protection or fit as forming films.
Less visually appealing for certain types of products.

Key Differences Between Forming and Non-Forming Films

Understanding the key differences between forming and non-forming films can help you choose the right solution for your packaging needs.

Material Composition

Forming Film: Typically made from materials that can be heated and molded, such as PE, PP, or PVC.
Non-Forming Film: Made from flexible materials that provide sealing and barrier properties but do not require forming capabilities.

Usage Scenarios

Forming Film: Best suited for products that need to be securely enclosed and protected, often used in vacuum packaging.
Non-Forming Film: Ideal for use as a lidding or cover film in combination with a formed base, commonly seen in trays and pre-packaged goods.

Choosing the Right Film for Your Packaging Needs

Selecting between forming and non-forming films depends on various factors, including the nature of the product, packaging requirements, and budget.

For products that require a tight seal and protection: Forming films are the best choice, offering both a secure fit and enhanced shelf life.
For products that need a simple cover or lid: Non-forming films are more cost-effective and easier to apply.

When choosing the right film, consider your product's specific needs, the desired presentation, and any environmental factors that may affect the packaging. Both forming and non-forming films play essential roles in packaging, and understanding their differences ensures you select the best option for your products.