Toyo Seikan Kaisha, Ltd.

Toyo Seikan Group Holdings, Ltd.

Toyo Seikan Co., Ltd.

Takeshi Iwashita

Kenichi Kominami

Nobuaki Nagatani

Chikako Sunohara

Yonosuke Takahara

Ken Isogawa

Takaaki Harada

Miki Hirabayashi

Hiroyuki Hashimoto

Tsuneo Imatani

Makoto Sawada

Hotaka Fukabori

Hideto Monzen

Shoichi Inaba

Keita Nakamori

Hiroyuki Kondou

Shigeru Sakai

Yoshinori Asada

A method of sterilizing containers by using a peracetic acid-type sterilizing composition solution, wherein the sterilizing composition solution containing peracetic acid, hydrogen peroxide, acetic acid and catalase as prepared in a circulating tank () is heated through a heating unit (), fed to a sterilizing unit (), and is recovered in the circulating tank () after it is used for the sterilization, wherein the catalase is added to the sterilizing composition solution in a circulating passage of after it was used for the sterilization but before it is fed to the heating unit. This makes it possible to suppress the catalase from losing its activity, to maintain the sterilizing power of the sterilizing composition solution, and to use the sterilizing composition solution in a circulating manner without cooling it saving, therefore, the heat energy providing advantage in economy.

Sterilizing method

A peracetic acid type sterilizing composition solution containing peracetic acid, acetic acid, hydrogen peroxide and catalase enzyme, wherein said sterilizing solution has a pH in a range of 2.6 to 5.0, said catalase enzyme is contained in an amount of 0.1 to 10 &#x3bc;g/ml, the concentration of said peracetic acid is 500 to 10,000 ppm, and the concentration of said hydrogen peroxide is less than 500 ppm. The concentration of the hydrogen peroxide can be efficiently decreased due to the catalase enzyme that is added in small amounts thereby suppressing the bubbling caused by the addition of the catalase enzyme.

Peracetic acid type sterilizing composition solution and method for sterilizing containers

Provided are a method and a device for sterilizing the surface of a space-to-be-sterilized which are safe to the human body, which are effective even for sterilizing spore-forming bacteria, which do not require the space-to-be-sterilized to be highly shielded, and which can sterilize the surface of the space efficiently with inexpensive equipment. The disclosed method involves: spraying a low-concentration sterilizing agent in the form of fine particles into the space-to-be-sterilized and making the sterilizing agent adhere to the surface thereof, the low-concentration sterilizing agent being any one of a 1-10 wt % aqueous solution of hydrogen peroxide, a 0.1-1 wt % aqueous solution of peracetic acid, or a 0.01-0.1 wt % aqueous solution of hypochlorous acid; adjusting the humidity in the space-to-be-sterilized; and air-drying the sterilizing agent. Thus, a high level of sterilization can be achieved in a short time and at low cost.

Method for sterilizing surface of space and sterilization system

For reducing time required for sterilizing a container by hydrogen peroxide, mitigating a cost required therefore, simplifying a sterilizing apparatus, reducing space for installing such apparatus, and mitigating load to the environment, a method for sterilizing a container is provided according to which hydrogen peroxide aqueous solution, air at the normal temperature and hot air are simultaneously injected into a container whereby the hydrogen peroxide aqueous solution which has been turned to minute droplets by the air at the normal temperature is instantly gasified.

Method for sterilizing a container and 3-fluid nozzle used for carrying out the method

[Problem] To realize a predetermined 'aseptic level of the containers' without introducing a container sterilizing machine and to reduce the burden for adjusting the temperature of the preform. [Means for Solution] A metal mold for molding, wherein a space width (t) of at least the body portion in the space width for forming a thickness of from the body portion to the bottom portion of the preform is set to lie in a range of 1.18 to 2.11 times as great as a space width (t) for forming a thickness of an upper end portion of the mouth portion of the preform. At the time of the compression molding, the preform is taken out in the state of a high temperature from a compression-molding machineand is fed to a bottle-producing unit C while maintaining the state of a high temperature. Further, the inner surfaces of a clean box I in which the units are placed and the outer surfaces of the units are sterilized, and the interior of the clean box I maintains a positive-pressure state with the filtered clean air. The bottle-producing unit C and a filling/sealing unit D are neighboring and directly coupled to each other in the same clean box, and are partitioned by a WBZ

System for aseptically filling a container with a beverage or food

A clean air supply apparatus is provided which has an ability of sterilizing effectively and uniformly also a secondary side surface of a filter. The apparatus has a pre-filterfor roughly filtering air sequentially introduced from an air inlet portfor introducing air to an air supply portfor sending clean air to a work environment, a blowerfor sucking air to the introduced, a heaterfor adjusting a temperature of introduced air, a chemical agent gas supply apparatusa chemical agent gas eject apparatusfor supplying chemical agent gas into the air path, high performance filters or ultrahigh performance filtersandfor filtering air to be delivered from an air supply portto generate clean air.

Method of sterilization in clean air supply apparatus and clean air supply apparatus

When the inner surface of containers conveyed in an inverted posture is sterilized, the sterilization efficiency can be increased, the amount of sterilizing fluid used can be reduced, the sterilization time and washing time can be shortened, the number of drive components of the apparatus can be reduced and the apparatus can be simplified and reduced in cost. A non-inserted nozzleis disposed at a distance of 1-50 mm below the lower end surfaceof a mouth of a container conveyed in an inverted posture, the sterilizing fluid is mixed with air and the sterilizing fluid is atomized and sprayed intermittently from the non-inserted nozzle toward the inside of the container.

Method for container sterilizing and washing and apparatus therefor

A non-inserted nozzle for washing a container that can increase the washing efficiency, decrease the amount of washing fluid used, and shorten the washing time in sterilizing and washing a bottle container. The upper end surface of a non-inserted nozzleserves as a liquid-receiving surface, and a retention wallof a predetermined height is formed on the outer periphery of the liquid-receiving surface, thereby producing a retention recess. A plurality of nozzle holeslinked to a fluid channel of a nozzle stemare provided obliquely so as to spread outwardly substantially in the central section of the liquid-receiving surface. The non-inserted nozzleis disposed below the mouth of an inverted containerat a distance H from it and the sterilizing fluid or washing fluid is sprayed from below the mouth of the container, without inserting the nozzle into the container.

Non-inserted nozzle for sterilizing or washing bottle container and method for sterilizing or washing inner surface of bottle container

A method for sterilizing a plastic bottle in an aseptic filling system according to which at least an inner surface or an outer surface of a bottle is sterilized by injecting a heated sterilizing fluid at 65&#xb0; C.-90&#xb0; C. while maintaining internal pressure of the bottle at 1 kPa-20 kPa.

Method for sterilizing a plastic bottle

A method for producing contents filled in a container comprising steps of introducing a polyester container with a non-crystallized neck portion into a sterilized closed space having sterility and closed state on a commercial basis and comprising at least space in which a bottle sterilizing process is performed, space in which a filling process is performed and space in which a sealing process is performed, entire inner surface of said sterilized closed space and surface of an apparatus disposed in said sterilized closed space being sterilized by wet heating of the space using heated water and/or steam, at least the space in which the filling process is performed and the space in which the sealing process is performed being kept under a positive pressure by sterilized air; heating and sterilizing the container at least in its inner surface by wet heating using hot water and/or steam; and filling the contents in the sterilized container at a filling temperature within a temperature range from 40&#xb0; C. to a temperature less than glass transition temperature which is determined by moisture content of the container and then sealing the container.

Method of producing contents filed in a container

The present invention provides an aqueous solution of a sterilant of peracetic acid series for use in aseptic filling comprised predominantly of hydrogen peroxide, peracetic acid and water wherein a pH of the aqueous solution is 2&#x2dc;4, a ratio of the concentration of hydrogen peroxide/the concentration of peracetic acid is 0.7 or less, and the concentration of peracetic acid is 500&#x2dc;3000 ppm as well as a sterilization method wherein the sterilant thereof is used. The sterilant of peracetic acid series exhibits an excellent sterilizing effect even at an extremely low concentration of peracetic acid and so is economically advantageous. What is more, washing of the sterilant with sterile water after sterilization of a container is attained by injecting sterile water even for a short period of time to such level that the sterilized container can be filled with foods and drinks, so that the sterilant is remarkable in economical value and working efficiency. The sterilization method is carried out by heating the sterilant of peracetic acid series and/or a container for foods and the like or the interior surface thereof at 60&#xb0; C. or higher to obtain more effective sterilizing effect and can be used in a recycling system, so far as a ratio of the concentration of hydrogen peroxide/the concentration of peracetic acid be maintained.

Sterilants and sterilization method for aseptic filling

Cup-shaped containers can be turned over and transferred with good stability from a sterilization-washing zone to the filling-sealing zone inside an aseptic chamber, and admixture of odor or microorganisms is prevented. The first conveyorfor conveying the cup-shaped containerin an inverted state and a second conveyorfor conveying the container in an upright state downstream of the first conveyorare disposed in series in substantially the same plane inside a continuous aseptic chamber. A container supply device, a container sterilization device, and a container washing device are disposed successively along the first conveyor. A contents filling device, a lid material sealing device, and a device for discharging the sealed cup-shaped container are installed successively along the second conveyor. Sterilization and washing are performed in an inverted state, while conveying the container with the first conveyor. The washed container is turned over and transferred from the first conveyor to the second conveyorand the contents filling and lid sealing are performed on the second conveyor.

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Yokohama, Japan

Takeshi Iwashita