JPS63110122A - Method of sterilizing vessel, etc. - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a method for sterilizing containers, etc., and more specifically, for example, when sterilizing containers in aseptic packaging, after using hydrogen peroxide for sterilization. , relates to a method for sterilizing containers, etc. that prevents hydrogen peroxide from remaining in packaging containers, etc.

(b) Prior Art In aseptic packaging, methods for sterilizing molded containers are generally known. As an example of a conventional apparatus for carrying out such sterilization processing, as shown in FIG. A hydrogen oxide spray device id and an air spray device rIte are installed in series, and after a supply device C supplies a volume 3r onto a conveyor b, a spray device d sprays hydrogen peroxide in the form of a mist into a container r. The inside of the container r is heated and dried by the air injection device e, and sterilized air is blown thereto to dry the hydrogen peroxide inside the container.

However, with this conventional sterilization method, there is a limit to the heating temperature depending on the material of the container (increasing the drying temperature may deform the container), and it takes a long time to dry. There is a problem in that drying must be carried out in several stages as shown in FIG. In addition, there is a limit to how little hydrogen peroxide can be used to sufficiently sterilize the inside of the container, and there is also the problem that drying takes a long time, making the aseptic packaging machine very long and increasing costs.

(c) Problems to be Solved by the Invention The problems to be solved by the present invention are to shorten the drying time by accelerating the evaporation of hydrogen peroxide in a method of sterilizing containers, etc. using hydrogen peroxide, and The goal is to eliminate residue.

(d) Means for Solving the Problems In order to solve the above problems, the present invention involves spraying ethyl alcohol in a mist onto containers to be sterilized, followed by hydrogen peroxide 3.
The hydrogen peroxide mist is dissolved in ethyl alcohol by spraying it in a mist state in a ripe state, and finally the ripened air is sprayed onto the container etc. to dry it.

(e) Examples Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, an apparatus for carrying out the sterilization method of the invention is schematically shown. In the figure, 1 is a housing of a sterile packaging machine, and 2 is a conveyor provided in the housing 1 that picks up containers fed by a container feeding device (not shown) and transports them in the direction of the arrow.

At the top of the conveyor 2, an ethyl alcohol injection device 3, a hydrogen peroxide injection device 4, and a dry air supply device 5 are provided in series along the container transport direction.

The ethyl alcohol injection device 3 includes a spray nozzle 31, an ethyl alcohol tank 34 and a sterile air supply source 35 connected to the spray nozzle 31 via electromagnetic valves 32 and 33, respectively. The ethyl alcohol from the alcohol tank 34 is sprayed in the form of a mist using sterilized air into the container r sent to position A by the conveyor 2.

The hydrogen peroxide injection device 4 is connected to a sterile air supply source and has a sterile air supply pipe 41 and a heater 42 that heats the sterile air.
and a peracid (arsenic) supply source 44 connected to a sterile air supply pipe 41 via a solenoid valve 43, and a heater 42.
Hydrogen peroxide is heated by sterilized air heated to about 110° C. and sprayed into a mist into the container sent to the position opening by the conveyor 2.

The dry air supply device 5 includes a dry air supply pipe 51 connected to a sterile air supply source and a heater 52 that heats the sterile air flowing through the supply pipe, and supplies the heated and dried sterile air to position C. Container 2 sent: ``It is designed to dry the ethyl alcohol and hydrogen peroxide inside the container by spraying it inside.

In the above configuration, when the container ``is conveyed to position A by the conveyor 2, ethyl alcohol is sprayed in the form of a mist by the ethyl alcohol injection device 3, and onto the inner surface of the container r as shown in FIG.
As shown in A), ethyl alcohol is uniformly applied in a film. When the container r coated with ethyl alcohol comes to the position opening, hydrogen peroxide is atomized and sprayed into the container r using matured sterile air through the sterilized air supply pipe 413 of the hydrogen peroxide injection device 4. Then, the condensed mist of hydrogen peroxide adheres to the surface of the ethyl alcohol as shown in Figure 2 (CB), but it begins to dissolve into the ethyl alcohol and completely dissolves after f& (Figure 2 (C)).

After that, when the container reaches position C, heated and dried sterile air is blown into the container by the dry air supply device 5.
Dry the ethyl alcohol mixed with hydrogen. This drying takes only a few seconds at an air temperature of 70° to 80°C (Fig. 2 [D]).

The dry container is filled with items in the same manner as before and then sealed with a cover.

(f) Effect: Before spraying hydrogen peroxide, ethyl alcohol was sprayed into the container to dissolve the hydrogen peroxide mist into the ethyl alcohol, so the monoarsenic peroxide spread evenly over the inner surface of the container, sterilizing it. can be carried out effectively. Also, although the drying time was shortened by m, peracid and arsenic water
This prevents residue from remaining.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of an apparatus for carrying out the sterilization method of the present invention;
The figure shows the sequence of sterilization treatment, and FIG. 3 is a schematic diagram of a conventional sterilization packaging device. 2: Conveyor 3: Ethyl alcohol injection device 4: Hydrogen peroxide injection device 5: Drying air supply device Patent applicant: CGD Corporation (5 others) Figure 2

Claims (1)

[Claims] 1. Spray ethyl alcohol in a mist onto a container to be sterilized, then spray hydrogen peroxide in a ripe state to dissolve the hydrogen peroxide mist into the ethyl alcohol, and finally heat. A method for sterilizing containers, etc., characterized by drying the containers, etc. by blowing sterilized air onto them. 2. The method for sterilizing containers, etc. according to claim 1, characterized in that the hydrogen peroxide is heated in advance. 3. The method for sterilizing containers and the like according to claim 1, characterized in that the hydrogen peroxide is heated by atomizing it with heated air.