Package making – Methods – Sterilizing complete package
Patent
1983-01-21
1985-08-27
Husar, Francis S.
Package making
Methods
Sterilizing complete package
53552, B65B 5502
Patent
active
045370079
ABSTRACT:
The invention relates to a process for endless-cycle sterilization of the sheet material utilized in aseptic packaging of pre-sterilized fluid food-stuffs, and to plant therefor. The process involves sterilization of a continuous sheet of material--caused subsequently to assume tubular format--by means basically of its being bathed on both sides and then sprayed with superheated steam jetted likewise at either side. Following such heat treatment, the sheet is shaped into a continuous tube and filled, this dual operation coming about within an enclosure maintained in sterile conditions. Plant for carrying the process into effect basically comprises a first chamber (3) inside which the alreadly-bathed sheet (1) is sprayed with steam, and a second chamber (5) inside which sterile conditions are maintained, wherein the sheet is duly shaped into a tube (10) and filled. The first chamber entry point is by way of a siphon trap (8), and the first and second chambers are pressurized to a given level and equalized thus during the plant's operation.
REFERENCES:
patent: 3466841 (1969-09-01), Rausing
patent: 3820300 (1974-06-01), Reinecke et al.
patent: 4376681 (1983-03-01), Inoue et al.
patent: 4417607 (1983-11-01), Scholle et al.
Griffin Jorji M.
Husar Francis S.
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