초록 ▼

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 enc

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.

대표청구항 ▼

In a process for packing a product in a sterile medium wherein containers are formed in a strip of thermoplastic material by hot forming of the thermoplastic material in a forming station, the container strip being sterile at least on the side forming the inside of the containers, the formed contain

In a process for packing a product in a sterile medium wherein containers are formed in a strip of thermoplastic material by hot forming of the thermoplastic material in a forming station, the container strip being sterile at least on the side forming the inside of the containers, the formed containers being filled in a filling station, the forming and filling of the containers being made in a sterile enclosure in which a slight excess pressure prevails as compared with the non-sterile external atmosphere, and which enclosure comprises side walls and an upper wall, as well as a bottom wall constituted, at least in part, by the container strip, the filled containers being covered with a strip without their inside being able to become contaminated by the non-sterile atmosphere, at least the face of said strip facing the inside of the containers being sterile, and the cover strip being sealed on the container strip around the filling opening of each container; characterized by using a composite strip constituted by at least the container strip and the cover strip having each a sterile side isolated from outside by application on another sterile side, in seal-tight manner, at least along its sides, the sterile sides of the container strips aNd cover strips being made to face each other, the container strip and the cover strip are separated at the entrance to the sterile enclosure, causing the cover strip to travel along a path overhanging that of the container strip, as it passes above forming and filling stations, providing a sterile atmosphere with slight excess pressure relatively to the non-sterile outside atmosphere on the side of the sterile face, turned downwards, of the cover strip, moving the container and cover strips along walls provided with incorporated heating means by causing them to pass respectively below and above a non-sterile area containing elements of forming and filling stations, and, outside the sterile enclosure, joining the cover strip and the container strip carrying the filled containers in seal-tight manner at least along their edges.