초록 ▼

A method for the production of a pack in an enclosure containing a sterile liquid comprises a sterilization step and a pack forming and filling step. The sterilization step comprises sterilizing the enclosure by means of hot water under pressure, replacing the hot water by sterile cold water to cool

A method for the production of a pack in an enclosure containing a sterile liquid comprises a sterilization step and a pack forming and filling step. The sterilization step comprises sterilizing the enclosure by means of hot water under pressure, replacing the hot water by sterile cold water to cool the enclosure to ambient temperature, discharging the sterile water from the enclosure, drying the enclosure by continuously blowing warm compressed sterile air into the enclosure, and the pack forming and filling step comprises feeding a web of pack-forming material through the enclosure, forming the web into a longitudinally open tube as it is fed through the enclosure, sealing the open tube longitudinally and transversely and filling the sealed tube with the sterile liquid.

대표청구항 ▼

A method for the production in a sole enclosure of a pack containing a sterile liquid, the method comprising a sterilization step followed by a pack forming and filling step, said sterilization step comprising filling entirely the enclosure with previously heated water to a temperature of between 12

A method for the production in a sole enclosure of a pack containing a sterile liquid, the method comprising a sterilization step followed by a pack forming and filling step, said sterilization step comprising filling entirely the enclosure with previously heated water to a temperature of between 120°and 150°C. and at a pressure of between 3 and 5 kg/cm2, circulating said heated water over a period of 10 to 40 minutes, replacing the hot water by sterile cold water to cool the enclosure to ambient temperature, discharging the sterile water from the enclosure and drying the enclosure by continuously blowing compressed sterile air into the enclosure at a temperature of between 60°and 70°C., and said pack forming and filling step comprising feeding along a path through the enclosure a flexible web of pack-forming material made of at least one layer of synthetic plastics material that is weldable by pressure, continuously injecting a sterile gas into the enclosure while the web is being fed through the enclosure, sterilizing the two faces of the web, folding the web over in the enclosure to form it into a longitudinally open tube, feeding Said tube downwardly past a filling pipe means which projects into the tube through the longitudinal gap in the tube, and successively welding the tube first longitudinally and then transversely below said filling pipe means, introducing a sterile liquid into the portion of the longitudinally welded tube above said transverse weld, and separating the tube at said transverse weld to form individual liquid-containing packs.