Patent ID: 7308782

Claim:
A method for producing filled and sealed containers, comprising the steps of: extruding a plastic tube through an extrusion head by at least first, second and third extruders forming the plastic tube with at least three layers, at least one of the layers being impermeable to oxygen and at least one of the layers being impermeable to water vapor, the extrusion head having first and second opposite sides; locating first and second molds alternately below the extrusion head and blowing and filling devices located at respective sides of the extrusion head, the plastic tube being extruded into one of the molds when located below the extrusion head while a plastic tube previously extruded into the other of the molds is being molded into a container with a filling opening by air being blown into that plastic tube in the respective side of the extrusion head; and filling the formed container with contents through the filling opening and then welding the filled container to seal the filling opening of the container.