초록 ▼

The invention is concerned with so-called sterile tunnels or tubes on aseptically operating packing machines. During operation, sterile air und during the pre-sterilizing phase, sterilizing fluid can flow through the telescopic tubular sealants provided on sterile tunnels or tubes of this type for t

The invention is concerned with so-called sterile tunnels or tubes on aseptically operating packing machines. During operation, sterile air und during the pre-sterilizing phase, sterilizing fluid can flow through the telescopic tubular sealants provided on sterile tunnels or tubes of this type for the passage of mounting linkages of working elements disposed in the sterile chamber of the tunnel. To safely strike and destroy, during the pre-sterilization of the sterile tunnel, all germs contained in the labyrinth-type telescopic tubular sealant, discharge openings are provided in the upper part of the telescopic tubular sealant.

대표청구항 ▼

1. A sterile tunnel for an aseptically operating packing machine, wherein the packing machine comprises(a) a housing confining a sterile chamber for a web of packing material passing through the sterile chamber, and (b) working elements arranged in the sterile chamber for working on the web of packi

1. A sterile tunnel for an aseptically operating packing machine, wherein the packing machine comprises(a) a housing confining a sterile chamber for a web of packing material passing through the sterile chamber, and (b) working elements arranged in the sterile chamber for working on the web of packing material and connected by linkages to drive means arranged outside the housing, and the sterile tunnel comprises (c) a telescopic tubular seal surrounding each linkage, the telescoping tubular seal comprising (1) a lower tube stationarily mounted on the housing, (2) an upper tube embracing the lower tube and being movable in relation thereto, the lower and upper tubes defining an annular gap therebetween, and (3) an upper closure connecting an upper portion of the upper tube to the drive means, the upper closure having circumferentially uniformly distributed apertures permitting a gaseous sterilizing fluid flowing through the telescopic tubular seal to be discharged therethrough.