Grilon F 40 natural is a high viscosity basic PA6 suitable for the production of mono and coextruded blown and cast films. As a result of the modification it offers good gas barrier, good mechanical properties, good barrier against oils/fats and good optical properties. Grilon F 40 natural is used as barrier in multi-layer films for food packaging mostly used as pouch, thermoforming, lidding and vacuum-bags (meat, fish, cheese).