Abstract: A method of and an installation for packaging in a sterile medium employs a composite film constituted in a thermoplastic film in which containers are formed, and a covering film with their opposing faces sterile. These are separated at the entrance to a sterile enclosure in which the containers are formed and filled, in a sterile atmosphere, the thermoplastic film forming the lower wall of the enclosure. The full containers are covered with a strip from which lids are formed without the inside of the containers being able to be contaminated, and the covering strip and thermoplastic film are connected in an air-tight manner. The method and installation are particularly suitable for packaging perishable food products, in particular dairy products.

Abstract: The method comprises the forming in one piece of the side wall and an end wall of the receptacle, the sealing of a covering foil or cap on the outer face of the end wall, the forming of a slot at least partially closed on itself by partially melting thermoplastic material of the end wall with at least a zone of the end wall surrounding the slot and a part of the end wall surrounded by the slot being hermetically fast with the covering foil or cap, the filling of the receptacle through an opening opposite the end wall, and the closing of said filling opening by a separate bottom, whereby an extraction opening delimited by the slot is made by pulling the covering foil or cap.

Abstract: A joint strip is used comprising a container strip in thermoplastic material and a cover strip having sterile sides facing one another and isolated from the outside in a sealed manner along their edges. The container and cover strips are separated each from the other at the entrance to a sterile enclosure, the cover strip passing along a path which overhangs that of the container strip and passes above stations for forming containers in the container strip, and for filling the containers. The cover strip is exposed, on the side of its sterile face, to a sterile atmosphere whose pressure is slightly in excess of that of the outside. The cover and container strips are moved respectively above and below a non-sterile area containing elements of the forming and filling stations. After the containers carried by the container strip have been filled, the cover and container strips are again joined in a sealed manner along their edges outside the sterile enclosure.

Abstract: The invention relates to a process and an apparatus for sterilizing a thermoplastic band used in the production of sterile packs.During the sterilization operation in the sterilization zone the edge of the thermoplastic band which subsequently forms the inside of the pack is applied to a movable sterilization support which is heated to the sterilization temperature and accompanies the band over part of its path to the shaping station located in the sterile enclosure and the contact being maintained between the support and the band until the latter enters the sterile enclosure.

Abstract: Receptacle such as a bottle, beaker or the like made of thermoplastic material, wherein each opening for extraction is constituted by a curved or polygonal slot at least partially closed on itself and made in the end wall by partially melting the thermoplastic material of which said wall is composed, and at least the parts of the end wall surrounding said slot are hermetically fast with a covering foil or cap coated with a layer of adhesive opposite said end wall.