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US 12,012,325 B2Granted
Content filling system and verification method of content filling system
AssigneeDai Nippon Printing Co., Ltd.
InventorAtsushi Hayakawa
Life of this patent
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Abstract
A preform is sterilized by a preform sterilizer. The preform is blow-molded by a blow-molding device to manufacture a container. Next, the container is filled with a culture medium by a filling device without sterilizing the container by a container sterilizer, and the container is plugged by a plugging device. Thereafter, it is verified how much microorganism survive or propagate in the culture medium in the container. A degree of sterilization in the container sterilizer is adjusted on the basis of a verification result.
Claims3
A content filling system, comprising:
- a preform sterilizer which sterilizes a preform;
- a blow-molding device which manufactures a container by blow-molding the preform sterilized by the preform sterilizer;
- a container sterilizer which sterilizes the container manufactured by the blow-molding device;
- a filling device which fills the container sterilized by the container sterilizer with a content;
- a plugging device which plugs the container filled with the content by the filling device;
- and
- a cap sterilization unit connected to the plugging device and which sterilizes a cap and conveys a sterilized cap to the plugging device,
- wherein the preform sterilizer comprises
- a chemical spraying nozzle, which sterilizes the preform by spraying a hydrogen peroxide, and
- a drying nozzle which dries the preform after the hydrogen peroxide is sprayed,
- wherein an amount of hydrogen peroxide in terms of 35 mass % attached to the preform after drying is in a range of 0.0003 μL/cm2 or more and 0.35 μL/cm2 or less,
- wherein the container sterilizer sterilizes the container by using the hydrogen peroxide as a disinfectant, and
- wherein a deposition amount of a gas or a mist of the hydrogen peroxide supplied into the container is a range of 0.01 μL/cm2 or more and 0.1 μL/cm2 or less in terms of 35 mass %,
- wherein the cap sterilization unit sterilizes the cap by using the hydrogen peroxide as a disinfectant, and
- wherein a deposition amount of a gas or a mist of the hydrogen peroxide sterilizing the cap in the cap sterilization unit is in a range of 0.6 μL/cm2 or less in terms of 35 mass %.
12 more elements
Dependencies are inferred from the claim text.