barrier films for food packaging

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Barrier Films & Laminations for Food Packaging

Deciding on the barrier film for your packaging application can be a complicated process. There are many variables to consider in order to best preserve your packaged product.

Established in 1968 Pyramid Packaging is a value-added, and ISO 9001 compliant supplier of packaging films.

Pyramid Packaging can help you select which of the

following types of film barriers are required for your

packaging application.

Advantages of film barriers•UV protection•prevents oxygen transfers•prevents odors•enhances moisture barrier properties •enhances gas barrier properties

Oxygen Transfer Rate is used to measure the amount of oxygen that passes through a film. The lower the number, the better the film barrier.

Foil (aluminum) backings offer the best best barrier protection with an OTR of

0. Foil is often used in candy wrappers, and to

preserve chocolate.

EVOH (ethylene vinyl alcohol) barrier films have a excellent OTR at .6 cc/m²). EVOH barriers are often used to package meat, fish & poultry related products.

MPET when OPP/BOPP films are laminated with

metal foil (MET) it will increase the film’s oxygen & water barrier & block out UV

rays. Because of the film’s stiffness, its used as a wrap for hard candies, chocolates

& is resistant to heat and moisture.

KPET is a soft saran coated PET film with good transparency. It is used as a substrate to laminate with other films. KPET has excellent gas, moisture and vapor properties making suitable for packaging of dry goods and protecting fragrant related items.

PET (polyester) is very good oxygen barrier, heat resistant & strong film with good durability. PET film is an excellent

laminating substrate for stand-up pouches. When PET films are laminated with metal foil it will increase the film’s oxygen- water

barrier & block out UV rays. Metallized films for flexible packaging are essential

when the product requires extra protection to ensure a longer shelf life MET PET provides protective properties for food

items requiring restricted visibility.

Nylon films have a high melting point and are used

for cooking applications such as boiling, microwaving

& baking. They have very good clarity & moisture

barriers & considered a very strong film.

Polypropylene is soft, clear glossy film with good moisture barriers &

high oxygen transfer rates. They are often used

for plastic food bags.

LLDPEbarrier films are inexpensive and have

good clarity. They are used to package fresh, produce, frozen foods & baked

goods.

Because of their high OTR of 2500, they work well when the package requires

oxygen.

Commonly Used Food Packaging Terms

Barrier Level: a films ability to prevent moisture from penetrating the film itself

Clarity: the measurement of a film’s transparency

Converting: process of cutting a plastic film it into lengths, bond the edges, resulting in plastic bags

Film Gauge: film thickness measured in mils

Laminated Films: Lamination (bonding together) of two or more films that improves the appearance, barrier properties

Metallized: applying a thin coating of metal to a nonmetallic surface by chemical deposition or by exposing the surface to vaporized metal in a vacuum chamber

Packaging Films: are melted plastic resin which are extruded into sheets or rolls

Sealability: bonding process between two layers of film

Est. in 1968, Pyramid Packaging is a

value-added supplier of flexible

packaging films, equipment & services.

We are a stocking supplier of flexible packaging films.

Service

We create value by working with clients who need help in selecting and customizing their packaging films.

Pyramid Packaging can customize your plastic packaging films & barriers according to your blend, size & graphic design.

By working with our packaging experts, we’ll

ensure you get the right barrier film for

your application while reducing

cost.

2901 Shermer Road Northbrook, Il 60062ph: 847-272-3400info@pyramidpackaging.com www.pyramidpackaging.com

Contact Pyramid Packaging