Barrier films allow a very diverse group of materials to be packaged directly in the film. Food packaging is one of the biggest product categories using barrier films. The application is fast while continuing to preserve the aesthetic appeal of the product.
One of the main concerns with using film in regard to food packaging is the oxygen transfer rate. Most food products need limited oxygen exposure so they require a high barrier film. The (OTR) oxygen transfer rate is the measurement of oxygen that can pass through the film. Certain foods spoil faster when exposed to oxygen during shelf life. Other considerations like odor control, ultraviolet and moisture exposure help determine the gauge and clarity of the film to be used. Certain light can color a food if it is not using the right barrier film. Food products have specific lamination requirements and standards to meet. Among the barrier films used in food packaging:
- EVOH (ethylene vinyl alcohol film)
- PET (polyester film) high performance used as a laminate substrate
- KPET is PET film coated with a soft saran laminate (strong odor control)
- Nylon (designed for microwave/cooking)
- LLDPE (linear low-density polyethylene) ideal for fresh produce
- Polypropylene (moisture control and high OTR) for food
There is a wide variety of barrier films available in the food packaging industry depending upon your product needs, or limitations. The demand for barrier films is only going to increase given the versatility and variety of applications within the film industry. High barrier film is also used for household chemicals and nutraceutical products. Barrier film is a vital part of modern-day packaging and its use is increasing.
Having the right barrier film for a food product, nutraceutical, or non-food product is essential. Barrier film offers manufacturers incredible options. At Century Printing and Packaging we have extensive experience using barrier film with our customers.
Ben Waldrop
President
Greer, SC 29651
800.344.7509
