AP-R7 is a ring shaped high barrier seven-layer casing formed for ring shape products. Despite the filling pressure, AP-R7 designed to retain in ring shape without deformation. AP-R7 has slightly better color distribution, higher caliber consistency, stronger barrier properties and higher mechanical properties in compare with five layer version. The rest of its properties are slightly optimized or the same compare to AP-E5. At the moment, due to technical reasons a few plants in the world are able to produce this product and we are privileged to be one of them. Like all our casings, it could be filled and clipped with high speed automatic machine. Inner layer has high meat adhesion; as a result it prevents formation of trapped liquid phase between casing and sausage (product which contain moisture). Due to seven layer structure of the casing, weight loss during cooking and storage time is close to zero. All our casings are easy print on, surface of the final product is smooth, wrinkleless after cooking and during the storage time.