초록 ▼

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

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.

대표청구항 ▼

A method of packaging in a sterile medium, comprising the steps of: providing a composite film comprised of a thermoplastic film covered, on a first side, by at least one covering strip; moving said composite film towards the entrance of a sterile enclosure having sidewalls, an upper wall and a lowe

A method of packaging in a sterile medium, comprising the steps of: providing a composite film comprised of a thermoplastic film covered, on a first side, by at least one covering strip; moving said composite film towards the entrance of a sterile enclosure having sidewalls, an upper wall and a lower wall, the thermoplastic film and the covering film being superimposed in an air-tight manner at least along their edges and with their opposing sides being sterile; separating the covering film from the thermoplastic film at the entrance to the sterile enclosure; guiding the thermoplastic film along a path from the entrance to the sterile enclosure to a forming station, the portion of the thermoplastic film being guided along the path forming at least a portion of the lower wall of the sterile enclosure; forming containers in the thermoplastic film at the forming station inside the sterile enclosure in which slight excess pressure prevails, said forming being performed by shaping the thermoplastic material heated to a forming temperature, the inner surface of said containers being formed by said first side of the thermoplastic film; filling the containers at the filling station inside the sterile enclosure; covering the full containers, without their contents being able to be contaminated by non-sterile atmosphere, with a covering strip, whereof at least the side facing the inside of the containers is sterile; and, at the outlet of the sterile enclosure, connecting the covering strip in an air-tight manner to at least the edges of the thermoplastic film presenting full containers.