Aseptic filling machine and its purification method

Abstract

This invention provides a sterile filling machine and its purification method that do not have a sterilization device for producing sterile water, except for a sterilization device for sterilizing the contents. A sterile water supply device is provided to supply sterile water, which has been sterilized by the contents sterilization device, to at least the filling chambers. Sterile water for rinsing the sterilizing agent during SOP processing in each chamber is also supplied to each chamber.

Description

[0001] This application is a divisional application of Chinese invention application No. 201980050177.3, filed on August 28, 2019, entitled "Aseptic filling machine and purification method thereof". Technical Field

[0002] This invention relates to an aseptic filling machine for filling beverages into containers such as PET bottles and a purification method thereof. Background Technology

[0003] Previously, in aseptic filling machines for beverages, when the type of beverage being filled into bottles or other containers was changed, for example, from tea to milk or coffee, the beverage supply system piping of the aseptic filling machine was first cleaned in place (CIP) and then sterilized in place (SIP) (see Patent Document 1).

[0004] CIP (Clean-in-Place) processing involves passing a cleaning solution containing an alkaline agent, such as caustic soda, into the water through a flow path from the beverage filling path to the filling nozzle of the filling machine, followed by a cleaning solution containing an acidic agent. This removes residues from the previous beverage application adhering to the beverage filling path (see Patent Documents 1, 2, and 3).

[0005] SIP processing is performed, for example, by flowing steam, hot water, etc., through a flow path that has been cleaned by the aforementioned CIP processing. As a result, the beverage filling path is sterilized and becomes sterile (see Patent Document 1).

[0006] Furthermore, the aseptic filling machine is equipped with a filling machine (filler) that automatically fills beverages into containers. This filling machine is surrounded by a sterile chamber that maintains a sterile atmosphere inside the chamber and is isolated from the outside. Inside this sterile chamber, there is residue from the beverage filled in the previous filling operation. Therefore, when changing the type of beverage to be filled, in order to remove any beverage residue that has adhered to the inner wall of the sterile chamber and the outer surface of the filling machine and other equipment inside the sterile chamber from the previous filling operation, a COP (Cleaning Out of Place) treatment is performed inside the sterile chamber. The COP treatment is performed, for example, by spraying water or the like into the sterile chamber in a shower-like manner (see Patent Document 4).

[0007] Furthermore, there are concerns about microbial contamination of the sterile chamber during various operations when changing beverage types. Therefore, SOP (Sterilizing out of Place) treatment is also performed on the sterile chamber. SOP treatment is carried out by, for example, supplying hydrogen peroxide water in the form of a mist or shower into the sterile chamber, and then blowing hot air into the sterile chamber to dry the residual hydrogen peroxide (see Patent Document 4).

[0008] During COP and SOP processes, sterile water is sprayed into the sterile chamber for rinsing with cleaning agents and disinfectants. The aseptic filling machine is equipped with a sterilization device for sterilizing the beverage to be filled. Furthermore, a sterilization device for heat sterilizing the water is provided to produce the sterile water used in COP and SOP processes (see Patent Document 5).

[0009] In existing aseptic filling machines, cleaning of the container interior after sterilization, cleaning of the cap after sterilization, and cleaning of the outer surface of the container opening after beverage filling are required. These processes use a large amount of sterile water. Therefore, in addition to the sterilization device for beverage sterilization, a sterilization device for sterile water also needs to be manufactured. However, by using a vaporized sterilizing agent gas, mist, or a mixture thereof for the sterilization of the container and cap, cleaning of the container interior and cap after sterilization is eliminated. Furthermore, due to improvements in the filling nozzle, cleaning of the outer surface of the container opening after beverage filling is also unnecessary.

[0010] Existing technical documents

[0011] Patent documents

[0012] Patent Document 1: Japanese Patent Application Publication No. 2007-22600

[0013] Patent Document 2: Japanese Patent Application Publication No. 2007-331801

[0014] Patent Document 3: Japanese Patent Application Publication No. 2000-153245

[0015] Patent Document 4: Japanese Patent No. 6056930

[0016] Patent Document 5: Japanese Patent Application Publication No. 2010-189034 Summary of the Invention

[0017] The problem that the invention aims to solve

[0018] In existing aseptic filling machines, large amounts of sterile water are used for cleaning the interior of sterilized containers, cleaning the caps after sterilization, and cleaning the outer surface of the container openings after beverage filling. Additionally, during Standard Operating Procedures (SOPs), sterile water is sprayed into the sterile chamber for rinsing with cleaning and disinfecting agents. To manufacture the sterile water used in the SOPs before operating the aseptic filling machine, and the sterile water used for cleaning the interior of sterilized containers, cleaning the caps after sterilization, and cleaning the outer surface of the container openings after beverage filling during operation, a sterilization device for sterile water is required, in addition to the sterilization device for beverage sterilization. The sterilization device for producing sterile water by heating and sterilizing water is expensive, becoming a burden on the initial investment.

[0019] With improvements in sterilization and filling methods in aseptic filling machines, it becomes unnecessary to clean the inside of the sterilized container, clean the cap after sterilization, and clean the outer surface of the container opening after beverage filling. It is also no longer necessary to use sterile water when the aseptic filling machine is running.

[0020] However, when performing Standard Operating Procedures (SOPs) before operating the aseptic filling machine, sterile water is required for rinsing with cleaning agents and disinfectants. Therefore, the aseptic filling machine must have a sterilization device to produce this sterile water for SOP processing. Having a sterilization device for both beverage sterilization and SOP-processing would result in excessively high initial investment for the aseptic filling machine. A type of aseptic filling machine that does not require such a sterilization device is needed.

[0021] The purpose of this invention is to provide an aseptic filling machine and its purification method that do not have a sterilization device for manufacturing sterile water for SOP processing, except for a sterilization device for sterilizing beverages.

[0022] Problem Solving Methods

[0023] The aseptic filling machine of the present invention is provided with at least a filling part for filling a sterilized container with sterilized contents in an aseptic atmosphere, and a sealing part for sealing the container filled with the contents with a sterilized cap material in an aseptic atmosphere. The aseptic filling machine has a filling part chamber that at least covers the filling part. The aseptic filling machine has a sterile water supply device that supplies sterile water sterilized by the contents sterilization device to at least the filling part chamber of the aseptic filling machine.

[0024] Furthermore, it is preferable that in the aseptic filling machine of the present invention, the aseptic water supply device is equipped with a heating device for heating the aseptic water.

[0025] Furthermore, in the aseptic filling machine of the present invention, the aseptic water supply device is preferably equipped with a sterilization device, which uses a sterilizing agent to sterilize the aseptic water supply pipe that supplies the aseptic water from the contents sterilization device to the filling chamber.

[0026] In addition, it is preferable that the aseptic filling machine of the present invention is provided with a plurality of the above-mentioned contents sterilization devices.

[0027] Furthermore, it is preferable that in the aseptic filling machine of the present invention, a sterile water storage tank for storing the sterile water is provided in the above-mentioned sterile water supply device.

[0028] In the purification method of the aseptic filling machine of the present invention, the aseptic filling machine is provided at least sequentially with a filling part for filling a sterilized container with contents sterilized by a contents sterilization device in an aseptic atmosphere, and a sealing part for sealing the container filled with the contents with a sterilized cap material in an aseptic atmosphere. The aseptic filling machine has a filling part chamber that at least covers the filling part. The method includes purifying at least the filling part chamber by supplying sterile water sterilized by the contents sterilization device.

[0029] Furthermore, the purification method of the aseptic filling machine of the present invention preferably includes heating the aseptic water supplied from the aseptic water supply device.

[0030] In addition, the purification method of the aseptic filling machine of the present invention preferably includes sterilizing the aseptic water supply pipe that supplies the aseptic water from the contents sterilization device to the filling chamber using a sterilizing agent.

[0031] Furthermore, the purification method of the aseptic filling machine of the present invention preferably includes supplying the aseptic water by at least one of a plurality of the above-mentioned contents sterilization devices.

[0032] Furthermore, the purification method of the aseptic filling machine of the present invention preferably includes storing the above-mentioned aseptic water before supplying it.

[0033] The effects of the invention

[0034] According to the present invention, there is no need to install a sterilization device for producing sterile water for SOP treatment in an aseptic filling machine, thus reducing the initial investment in the aseptic filling machine. Furthermore, since the sterile water produced by the content sterilization device that sterilizes the contents can be purified in the chamber requiring a sterile atmosphere before the aseptic filling machine is operated, the content sterilization device is operated before the aseptic filling machine starts, reducing the need to stop the content sterilization device for cooling when the aseptic filling machine stops. Compared to the case where a separate sterilization device is required for the production of sterile water, energy efficiency is increased and operating costs are reduced. Attached Figure Description

[0035] Figure 1 This is a top view showing an outline of the aseptic filling machine according to Embodiment 1 of the present invention.

[0036] Figure 2 The process of heating and molding of the aseptic filling machine according to Embodiment 1 of the present invention is shown in the following steps: (A) shows the preform feeding process, (B) shows the preform heating process, (C) shows the blow molding process, and (D) shows the container removal process.

[0037] Figure 3 The process of sterilization and filling of the aseptic filling machine according to Embodiment 1 of the present invention is shown. (E-1) shows the process of blowing sterilizing gas through the channel to cover the container. (E-2) shows the process of blowing sterilizing gas by inserting the sterilizing gas blowing nozzle into the container. (F-1) shows the process of air spraying when the container is upright. (F-2) shows the process of air spraying when the container is upside down. (G) shows the filling process. (H) shows the sealing process.

[0038] Figure 4 A sterilizing gas generator is shown that is incorporated into an aseptic filling machine according to Embodiment 1 of the present invention.

[0039] Figure 5 The diagram shows a sterilizing agent nozzle, a liquid nozzle, and a sterile air supply device included in the chamber of the aseptic filling machine according to Embodiment 1 of the present invention.

[0040] Figure 6 The contents sterilization device and the sterile water supply device included in the aseptic filling machine according to an embodiment of the present invention are shown.

[0041] Figure 7 The invention illustrates a contents sterilization device and a sterile water supply device with a sterile water storage tank in an aseptic filling machine according to an embodiment of the invention.

[0042] Figure 8 The diagram shows a plurality of contents sterilization devices and a sterile water supply device included in an aseptic filling machine according to an embodiment of the present invention.

[0043] Figure 9 This is a top view showing an outline of the aseptic filling machine according to Embodiment 2 of the present invention.

[0044] Figure 10 The process of the preform sterilization section of the aseptic filling machine according to Embodiment 2 of the present invention is shown, (I) showing the process of blowing sterilizing agent gas onto the preform, and (J) showing the process of blowing air onto the preform.

[0045] Symbol Explanation

[0046] 66… Sterilization device

[0047] 67…surge tank

[0048] 68…Head tank

[0049] 70… Sterile water supply device

[0050] 71…Sterile Water Storage Tank Detailed Implementation

[0051] Hereinafter, the methods for carrying out the present invention will be described with reference to the accompanying drawings.

[0052] (Implementation Method 1)

[0053] Figure 1 The image shows an aseptic filling machine according to Embodiment 1 of the present invention. By... Figure 1 This section describes the general overview of an aseptic filling machine, which is used to sterilize containers. Starting from the supply of a preform, the aseptic filling machine includes: a heating section for the preform; a forming section from the preform to the container; an inspection section for the formed container; a container sterilization section for sterilizing the container; an air spray section for the sterilized container; a filling section for filling the sterilized container with contents sterilized by a contents sterilization device in an aseptic atmosphere; a sealing section for sealing the container filled with contents with a sterilized cap material in an aseptic atmosphere; and a discharge section for discharging the sealed container. Figure 2 , Figure 3 , Figure 4 and Figure 5 The details of each department are explained, through Figure 6 , Figure 7 and Figure 8 The sterile water supply device used for SOP processing in the chambers of the aseptic filling machine is described. According to this embodiment 1, sterile water for COP or SOP processing in the chambers of the aseptic filling machine, which should be set to a sterile atmosphere, can be supplied by a content sterilization device for sterilizing the contents. Therefore, initial investment can be reduced and energy consumption during operation can be decreased.

[0054] (Summary of Implementation Method 1)

[0055] like Figure 1As shown, the aseptic filling machine of Embodiment 1 includes: a preform supply device 4 for supplying preforms 1; a heating section 6 for heating to a temperature for molding the preforms 1 into a container 2; a molding section 16 for molding the heated preforms 1 into the container 2; an inspection wheel 23 for inspecting the molded container; a container sterilization section 30 for sterilizing the molded container 2; an air spray section 34 for air spraying the sterilized container 2; a filling section 39 for filling the sterilized contents into the air-sprayed container 2 in an aseptic atmosphere; a cap sterilization section 52 for sterilizing the cap material 3, which serves as a sealing member; a sealing section 44 for sealing the container 2, which has been filled with the sterilized cap material 3, in an aseptic atmosphere; a discharge section 47 for placing the sealed container 2 onto a discharge conveyor 50; and an outlet section 51 for discharging the container 2 to a non-sterile area via the discharge conveyor 50. Alternatively, the inspection wheel 23 and the air spray section 34 may be omitted.

[0056] Specifically, the heating section 6 is shielded by the heating section chamber 12, the forming section 16 and the inspection wheel 23 are shielded by the forming section chamber 17, the container sterilization section 30 is shielded by the container sterilization section chamber 33, the air spray section 34 is shielded by the air spray section chamber 36, the filling section 39 is shielded by the filling section chamber 41, the sealing section 44 is shielded by the sealing section chamber 46, the discharge section 47 is shielded by the discharge section chamber 49, and the outlet section 51 is shielded by the outlet section chamber 53. An atmosphere-isolated chamber 27 is provided between the forming section chamber 17 and the container sterilization section chamber 33 to prevent the gas, mist, or mixture thereof of the disinfectant generated in the container sterilization section 30 from flowing into the forming section 16. By venting the atmosphere-isolated chamber 27, the gas, mist, or mixture thereof of the disinfectant generated in the container sterilization section chamber 33 is prevented from flowing into the forming section chamber 17. Here, the heating section 6 and the forming section 16 can be shielded by a single chamber. Furthermore, the sterilization section 52 and the sealing section 44 can also be concealed by a single chamber. Additionally, the sealing section 44 and the discharge section 47 can also be concealed by a single chamber.

[0057] During the operation of the aseptic filling machine, sterile air, which has been sterilized by a sterilization filter, is supplied to the container sterilization chamber 33, air spray chamber 36, filling chamber 41, sealing chamber 46, discharge chamber 49, and outlet chamber 53, maintaining a positive pressure in each chamber and thus preserving the sterility of the aseptic filling machine. The positive pressure is set such that it is highest in the filling chamber 41 and decreases upstream of the air spray chamber 36 and container sterilization chamber 33. Conversely, it is set such that it decreases downstream of the sealing chamber 46, discharge chamber 49, and outlet chamber 53. By venting from the atmosphere isolation chamber 27, the pressure within it is maintained at approximately atmospheric pressure. For example, when the pressure in the filling chamber 41 is set to 20 Pa to 40 Pa, the pressure in the other chambers is lower than that in the filling chamber 41.

[0058] For the container sterilization chamber 33, air spray chamber 36, filling chamber 41, sealing chamber 46, discharge chamber 49, and outlet chamber 53, which must maintain a sterile atmosphere during the operation of the aseptic filling machine, sterilization is performed before the aseptic filling machine starts operating. This is known as Standard Operating Procedure (SOP). Then, sterile air is supplied to maintain a sterile atmosphere in each chamber. For the container sterilization chamber 33, a sterilizing agent gas, mist, or mixture thereof is sprayed during the operation of the aseptic filling machine; therefore, sterilization may not be necessary before the aseptic filling machine starts operating.

[0059] Implementation method 1 can be a process where a pre-shaped blank 1 is supplied to an aseptic filling machine, formed into a container 2 within the aseptic filling machine, and then the formed container 2 is supplied to the aseptic filling machine of the container sterilization section 30.

[0060] (Details of Implementation Method 1)

[0061] First, the preform is fed to conveyor 5 at the desired speed. Figure 2 (A) The pre-shaped blank 1 shown is from Figure 1 The preform supply device 4 shown continuously transports the preform to the heating section 6.

[0062] In this embodiment, the pre-shaped blank 1 is a bottomed tubular experimental tube, which is given [something] during its initial molding. Figure 2(D) shows the same opening 1a as container 2. External threads are formed on this opening 1a simultaneously with the molding of the preform 1. Additionally, a support pad 1b for transport is formed at the lower part of the opening 1a of the preform 1. The preform 1 or container 2 is held by clamps 22 via this support pad 1b and moved within a sterile filling machine. The preform 1 is molded by injection molding, compression molding, or the like. The material of the preform 1 includes thermoplastic resins such as polyethylene terephthalate, polyethylene naphthalate, polypropylene, and polyethylene, or monomers or mixtures of these resins, and may also include recycled thermoplastic resins. Furthermore, to impart barrier properties, layers of thermoplastic resins such as ethylene-vinyl alcohol copolymers or polyamides with aromatic amines such as m-xylenediamine as monomers may be formed, or mixtures thereof may be included.

[0063] The pre-shaped blank 1, supplied to the heating section 6, is transported by wheels 7 and 8, which are equipped with multiple clamps 22 at regular intervals, and then reaches the heating section transport wheel 9. Here, as... Figure 2 As shown in (B), it is released from the clamp 22 and transported by inserting the mandrel 19 into the opening 1a of the preform 1.

[0064] like Figure 2 As shown in (B), the preform 1 is heated to a temperature suitable for subsequent blow molding by an infrared heater 14 or other heating mechanism. This temperature is preferably 90°C to 130°C.

[0065] It should be noted that, in order to prevent deformation, the temperature of the opening 1a of the preform 1 is controlled to be below 70°C.

[0066] like Figure 2 As shown in (B), for the preform 1, a mandrel 19 is inserted into the opening 1a, and it is transported by an infrared heater 14 while rotating via a ring chain 13. The mandrels 19 are arranged at certain intervals on the ring chain 13. The ring chain 13 rotates via pulleys 10 and 11. By inserting a mandrel into the preform 1 instead of the mandrel 19, the preform 1 can be transported while rotating in an inverted state.

[0067] The heated pre-shaped blank 1 is released from the mandrel 19, held by the clamp 22, and transported via the wheel 15 to the forming wheel 18 of the forming section 16. Through the metal mold 20 on the forming wheel 18, such as... Figure 2As shown in (C), a preform 1 is blow-molded into a container 2. Multiple metal molds 20 and nozzles 21 are arranged around a forming wheel 18, rotating at a certain speed as the forming wheel 18 rotates. When the heated preform 1 arrives, the metal mold 20 clamps it in. Next, the nozzle 21 engages with the preform 1, and a tension rod (not shown) is guided to a hole in the nozzle 21 and inserted into the preform 1. By extending the inserted tension rod at the bottom of the preform 1, the preform 1 is longitudinally stretched. Simultaneously, air or other gas is blown into the preform 1 from the nozzle 21, causing transverse stretching. The preform 1 is longitudinally and transversely stretched within the metal mold 20 to form the container 2. Figure 2 As shown in (D), the formed container 2 is taken out from the metal mold 20, and the support pad 1b is held by the clamp 22 set on the inspection wheel 23 and delivered to the inspection wheel 23.

[0068] For the formed container 2, the container temperature, container body, support pad 1b, top surface of container opening, and container bottom are checked by the inspection device 24 provided around the inspection wheel 23. If any abnormality is found, the container is discharged to the outside of the aseptic filling machine through the discharge device (not shown). The container inspection is performed in the forming chamber 17, but it can also be concealed by another chamber in the form of an inspection section.

[0069] During container temperature checks, the surface temperature of container 2 is measured to determine its condition. A temperature sensor, such as an infrared radiation thermometer (infrared radiation camera), can be used, but other thermometers may also be employed. For proper sterilization of container 2, residual heat from the container forming process must remain within it. The temperature detected by the temperature sensor is preferably above 50°C.

[0070] In addition, the container body, support pad 1b, top surface of the container opening, and bottom of the container are photographed using a camera to check the condition of each location. The photographed images are processed by an image processing device to determine whether there are any abnormalities such as scratches, foreign objects, deformation, or discoloration. Container 2 that exceeds the allowable range is judged as abnormal.

[0071] For containers 2 that are not identified as abnormal by inspection using inspection device 24, in order to prevent the gas or mist of the disinfectant generated in container sterilization section 30 or their mixture from flowing into molding section 16, they are transported to container sterilization section 30 via wheels 25 and 26 provided in atmosphere isolation chamber 27 between molding section 16 and container sterilization section 30.

[0072] For container 2, which is transported to container sterilization section 30, sterilization is performed in wheel 28. The process of blowing sterilizing agent into container 2 using gas is shown below. Figure 3(E-1). A disinfectant gas nozzle 31 is provided for blowing disinfectant gas into container 2. The disinfectant gas nozzle 31 is fixed in such a way that the nozzle opening at its front end is directly aligned with the opening of the mouth 1a of container 2, which is traveling directly below. Additionally, as needed, the disinfectant gas nozzle 31 can be positioned below the travel path of container 2 as follows: Figure 3 As shown in (E-1), a disinfectant gas delivery channel 32 is provided. There may be one or more disinfectant gas delivery nozzles 31. The disinfectant gas delivered to container 2 flows into the interior of container 2, disinfecting the inner surface of container 2. At this time, container 2 travels within the disinfectant gas delivery channel 32, thereby causing the disinfectant gas, mist, or a mixture thereof to flow to the outer surface of container 2, disinfecting the outer surface of container 2.

[0073] In addition, such as Figure 3 As shown in (E-2), the disinfectant gas nozzle 31 follows the transport of the container 2, and can be inserted into the interior of the container 2. Alternatively, disinfectant gas, mist, or a mixture thereof can be directly blown onto the inner surface of the container 2. Disinfectant gas, mist, or a mixture thereof overflowing from the container 2 collides with the guide member 31a surrounding the disinfectant gas nozzle 31, flows to the outer surface of the container 2, and contacts the outer surface of the container 2. The guide member 31a has an edge portion coaxial with the disinfectant gas nozzle 31 and an annular wall portion protruding outward from the edge portion.

[0074] The disinfectant gas or mist, or mixture thereof, is delivered via... Figure 4 The disinfectant gas generator 55 shown produces a vaporized disinfectant, a mist formed by the condensation of vaporized disinfectant, or a mixture thereof. The disinfectant gas generator 55 includes: a disinfectant supply section 56, which serves as a two-fluid nozzle for supplying disinfectant in droplets; and a vaporization section 57, which heats the disinfectant supplied from the disinfectant supply section 56 to below its decomposition temperature to vaporize it. The disinfectant supply section 56 introduces disinfectant and compressed air from a disinfectant supply path 56a and a compressed air supply path 56b, respectively, and sprays the disinfectant into the vaporization section 57. The vaporization section 57 is a tube with a heater 57a sandwiched between its inner and outer walls, which heats the disinfectant blown into the tube to vaporize it. The vaporized disinfectant gas is then ejected from the disinfectant gas nozzle 31 to the outside of the vaporization section 57. Alternatively, dielectric heating can be used instead of the heater 57a to heat the vaporization section 57.

[0075] As for the operating conditions of the disinfectant supply unit 56, the pressure of compressed air is adjusted within the range of 0.05 MPa to 0.6 MPa. Furthermore, the disinfectant can be supplied by gravity or by pressure, and the supply rate can be freely set; for example, the disinfectant can be supplied to the disinfectant supply path 56a within the range of 1 g / min to 100 g / min. Additionally, the sprayed disinfectant is vaporized by heating the inner surface of the vaporization unit 57 from 140°C to 450°C.

[0076] The gaseous disinfectant, such as Figure 3 (E) The disinfectant gas is blown from the nozzle 31 into the container 2. The blowing rate of the disinfectant gas, mist, or mixture thereof is arbitrary and is determined by the amount of disinfectant supplied to the disinfectant gas generator 55 and the blowing time. Multiple disinfectant gas generators 55 may be provided. The blowing rate can vary depending on the size of the container 2.

[0077] The preferred disinfectant contains at least hydrogen peroxide. A content ranging from 0.5% to 65% by mass is suitable. At less than 0.5% by mass, insufficient disinfection may occur, while at more than 65% by mass, safety becomes a concern. Furthermore, a content of 0.5% to 40% by mass is more preferred; below 40% by mass, it is easier to handle, resulting in a low concentration, thus reducing the amount of disinfectant residue on container 2 after disinfection.

[0078] When the disinfectant is hydrogen peroxide water, the blowing rate of the hydrogen peroxide water gas is as follows. Since the hydrogen peroxide water gas blown from the disinfectant gas blowing nozzle 31 to the inner surface of container 2 has a hydrogen peroxide content adhering to the inner surface of container 2, the amount of hydrogen peroxide is preferably 30 μL / container to 150 μL / container, more preferably 50 μL / container to 100 μL / container, based on the amount of hydrogen peroxide water containing 35% by mass of hydrogen peroxide. Furthermore, the hydrogen peroxide concentration of the hydrogen peroxide water gas blown to container 2 is preferably 2 mg / L to 20 mg / L, more preferably 5 mg / L to 10 mg / L.

[0079] In addition, bactericides contain water and may also contain one or more of the following: alcohols such as methanol, ethanol, isopropanol, n-propanol, and butanol; ketones such as acetone, methyl ethyl ketone, and acetylacetone; and ethylene glycol ethers.

[0080] In addition, bactericides may contain additives such as peracetic acid, organic acids such as acetic acid, chlorine compounds such as sodium hypochlorite, compounds with bactericidal effects such as ozone, cationic surfactants, nonionic surfactants, and phosphoric acid compounds.

[0081] Container 2, after being sterilized in the container sterilization section 30, is as follows: Figure 1As shown, it is transported to the air spray section 34 via wheel 29. For container 2, in Figure 1 In the air spray wheel 35 shown, such as Figure 3 As shown in (F-1), sterile air is blown onto the upright container 2 through air spray nozzle 38. The sterile air can be at room temperature, but is preferably heated. The sterile air expels residual disinfectant from inside the container 2, decomposes the residual disinfectant, further improving the disinfection effect, and also has the effect of removing foreign matter if it is present inside the container 2. Additionally, as... Figure 3 As shown in (F-2), container 2 can also be inverted and sterile air can be blown into it. In this case, the removal of foreign matter is more effective than in the upright position. Furthermore, compared to... Figure 3 Similarly, the sterilizing agent nozzle 31 of (E-2) also has a guiding member surrounding the air spray nozzle 38. This allows sterile air overflowing from the opening 1a and introduced into the container 2 to collide with the guiding member, spraying the outer periphery of the opening 1a as well. This increases the temperature of the outer periphery of the opening 1a, improving the sterilization effect. Alternatively, the air spray nozzle 38 can be made to move up and down, blowing sterile air into the container 2.

[0082] like Figure 1 As shown, the container 2, after being air-sprayed by the air spray section 34, is transported to the filling section 39 via wheel 37. In the filling section 39, the container 2... Figure 1 The filling wheel 40 shown is like Figure 3 As shown in (G), the contents are filled into the container 2 through the filling nozzle 42. The contents are pre-sterilized, and a certain amount of beverage or other contents are filled into the container 2 through the filling nozzle 42, which moves simultaneously with the container 2.

[0083] like Figure 6 As shown, the aseptic filling machine includes a content preparation device 65 and a content sterilization device 66 for sterilizing the content. The content sterilization device 66 and the filling nozzle 42 of the filling section 39 are connected together by a content supply system pipe.

[0084] The mixing device 65 is used to mix beverages such as tea drinks and fruit drinks in desired proportions. Since it is a known device, its detailed description is omitted.

[0085] The filling section 39 is configured with a plurality of filling nozzles 42 arranged around a filling wheel 43 that rotates at high speed in a horizontal plane. Therefore, while the filling nozzles 42 rotate together with the filling wheel 43, beverage is quantitatively filled from the filling nozzles 42 into the container 2, which moves synchronously with the circumferential speed of the filling wheel 43 below the filling nozzles 42.

[0086] The contents sterilization device 66 is, for example, a first heating section consisting of multiple shell-and-tube heat exchangers connected in series to heat the contents from 20°C to 65°C, and a second heating section consisting of more shell-and-tube heat exchangers connected in series than the first heating section to heat the contents from 65°C to 140°C. The contents heated to 140°C are then maintained at 140°C and sterilized using an insulation tube. The contents are further cooled to room temperature using a cooling section included in the contents sterilization device 66.

[0087] The contents, which have been modulated by the modulation device 65 and sterilized by the contents sterilization device 66, are stored in the buffer tank 67 through the replacement valve 69, and then further fed to the pressure tank 68 provided near the filling section 39. The contents are then supplied from the pressure tank 68 to the filling nozzle 42 and filled into the container 2.

[0088] The container 2 filled with contents is passed through Figure 1 The filling wheel 43 shown is transported to the sealing part 44. The sealing wheel 45, provided on the sealing part 44, is used to... Figure 3 As shown in (H), the sealing member, i.e., the cover material 3, which has been sterilized by the cover material sterilization section 52, is supplied to the sealing wheel 45 via the sterilization cover material transport path 54 through the cover material supply wheel 54a and the cover material receiving wheel 54b. The opening 1a of the container 2 is rolled by a capping machine (not shown) to seal the container 2.

[0089] The sealed container 2 is delivered from the clamp 22 of the sealing wheel 45 to the clamp 22 of the discharge wheel 48 of the discharge section 47. The container 2 delivered to the discharge wheel 48 is placed on the discharge conveyor 50. The container 2 placed on the discharge conveyor 50 is discharged from the outlet chamber 53 to the outside of the aseptic filling machine.

[0090] For the sterilization chamber 33, air spray chamber 36, filling chamber 41, sealing chamber 46, discharge chamber 49, and outlet chamber 53, SOP (Standard Operating Procedure) treatment is performed before the aseptic filling machine is operated. Therefore, as Figure 5 As shown, each chamber is equipped with a disinfectant nozzle 58 and a liquid nozzle 59. As described above, SOP treatment of the container sterilization chamber 33 may not be required.

[0091] The disinfectant nozzle 58 uses a one-fluid atomizer or a two-fluid atomizer that mixes and sprays the disinfectant with compressed air to ensure that the disinfectant adheres to the entire area of ​​each chamber requiring disinfection. The blown disinfectant disinfects each chamber. The disinfectant nozzle 58 is configured to ensure that the disinfectant adheres to the entire area of ​​each chamber. The disinfectant can be the same disinfectant used to disinfect container 2, preferably a disinfectant containing peracetic acid or hydrogen peroxide. Different disinfectants can be blown multiple times.

[0092] When peracetic acid is used as a bactericide, the concentration of peracetic acid is set to 500 ppm or higher, preferably 1000 ppm or higher. The sterilization conditions under this condition are: heating the bactericide to 40°C–95°C, preferably 50°C–95°C, so that 0.01 g / cm³ of peracetic acid adheres to the surface of the device and walls within the chamber. 2 The preferred value is 0.1 g / cm³. 2 The above method is used to spray the disinfectant into the chamber. The preferred spraying time is 30 seconds to 30 minutes. It can also be carried out for more than 30 minutes, but productivity will decrease.

[0093] After the disinfectant is blown through the disinfectant nozzle 58, sterile water is blown into the entire area of ​​each chamber through the liquid nozzle 59. This sterile water washes away any remaining disinfectant in each chamber. The liquid nozzle 59 is configured to blow liquid into the entire area of ​​each chamber. The sterile water refers to water that has been sterilized by heating at 121.1°C or higher for at least 4 minutes using the contents sterilization device 66. The sterile water blown into each chamber from the liquid nozzle 59 is heated to 20°C to 100°C, preferably to 60°C to 100°C. Setting the temperature to 60°C or higher improves the cleaning ability of the sterile water. However, temperatures exceeding 100°C may damage the liquid nozzle 59, which is undesirable. Furthermore, sometimes a portion of the supplied sterile water becomes water vapor, causing fluctuations and an unstable supply. For example, a nozzle utilizing a rotating ball is used as the liquid nozzle 59. Alternatively, the liquid delivery nozzle 59 can be omitted, and sterile water can be delivered from the disinfectant delivery nozzle 58. To achieve efficient cleaning in a short time, sterile water is preferably supplied with a delivery pressure of 0.1 MPa or higher, preferably 0.2 MPa or higher, from the liquid delivery nozzle 59. After cleaning each chamber with sterile water, the sterile water is discharged from the chamber. A water seal mechanism is preferably used to seal the non-sterile areas where the sterile water is discharged and from each chamber. Furthermore, to avoid the risk of contamination into the container 2, the disinfectant delivery nozzle 58 and the liquid delivery nozzle 59 are preferably installed in a position that avoids the transport path on the opening of the container 2.

[0094] For the filling chamber 41, due to the significant contamination caused by the dispersion of contents within the chamber, a standard operating procedure (SOP) is performed using an alkaline solution with peracetic acid or caustic soda as the main disinfectant. However, the contamination in the discharge chamber 49 and the outlet chamber 53 is limited; therefore, sometimes an SOP using only hydrogen peroxide is performed, in which case rinsing with sterile water is not necessary. Therefore, sterile water produced by the contents sterilization device 66 is supplied to at least the filling chamber 41. Thus, at least the filling chamber 41 is equipped with a sterile water supply device 70 for supplying sterile water produced by the contents sterilization device 66.

[0095] Furthermore, if the sealed chamber 46 is also contaminated with contents, a standard operating procedure (SOP) is performed using a bactericide such as peracetic acid or an alkaline solution with sodium hydroxide as the main component. Therefore, sterile water produced by the contents sterilization device 66 is also supplied to the sealed chamber 46.

[0096] Sterile water is manufactured as follows: water is supplied to the contents sterilization device 66, and the supplied water is heated and sterilized by the contents sterilization device 66. Figure 6 As shown, the manufactured sterile water is supplied to the filling chamber 41 via the sterile water supply device 70 through the replacement valve 69 and blown into the chamber through the liquid blowing nozzle 59. Alternatively, it can be supplied to chambers other than the filling chamber 41. Sterile water is manufactured by heating the water using the contents sterilization device 66. Since the water is cooled by the contents sterilization device 66, it is preferable to heat the sterile water to be supplied to improve the cleaning ability of the sterile water supplied to each chamber. Thus, the water is heated by the heater 72 from the replacement valve 69 until it is supplied to the filling chamber 41 and each other chamber. As described above, it is preferable to heat the sterile water to 60°C to 100°C.

[0097] In addition, such as Figure 7 As shown, sterile water is sometimes supplied to each chamber after being stored in a sterile water storage tank 71. The sterile water supply device 70 includes sterile water supply piping from a replacement valve 69 to each chamber, a sterile water storage tank 71, and a heater 72. Furthermore, for pressurizing sterile water, the sterile water supply device 70 may also include a sterile air supply device for supplying sterile air. Additionally, the sterile water supply device 70 may also include a sterile pump with a vapor barrier for supplying sterile water to each chamber. The supply of sterile water to each chamber can be performed in a single chamber or simultaneously in multiple chambers.

[0098] Before supplying sterile water to each chamber, the sterile water supply piping is sterilized. For example... Figure 6As shown, for the piping from the replacement valve 69 to each chamber, it is preferable to sterilize it with a disinfectant (mainly peracetic acid or hydrogen peroxide) before delivering sterile water. This is because there is a concern that the liquid delivery nozzle 59 may be damaged by heat, therefore sterilization using heated steam is not preferred.

[0099] When sterilizing the sterile water supply piping that supplies sterile water to various chambers using a disinfectant with peracetic acid as the main component, the process involves setting the peracetic acid concentration to 500 ppm or higher, preferably 1000 ppm to 5000 ppm, and then injecting the disinfectant into the sterile water supply piping. The disinfectant is heated to 40°C to 95°C, preferably 50°C to 95°C, and the flow rate within the piping is set to 1.0 m / s or higher during injection. The injection time is preferably 30 seconds to 30 minutes. While it is possible to set the peracetic acid concentration to 5000 ppm or higher and inject the disinfectant for 30 minutes or more, this increases costs and reduces productivity.

[0100] When using a disinfectant primarily composed of hydrogen peroxide to sterilize the sterile water supply piping, sterilization can be achieved by supplying sterile air containing hydrogen peroxide at a concentration of 1.0–20 mg / L and a temperature of 50–100°C into the sterile water supply piping for at least 5 minutes. However, supplying sterile air containing hydrogen peroxide at a concentration of 20 mg / L or higher increases costs and reduces productivity.

[0101] Sterilization of the sterile water supply piping can be achieved using either a peracetic acid-based disinfectant or a hydrogen peroxide-based disinfectant. In this case, it is preferable to first perform sterilization using the peracetic acid-based disinfectant, followed by sterilization using the highly effective hydrogen peroxide-based disinfectant.

[0102] like Figure 7 As shown, when the sterile water supply device 70 includes a sterile water storage tank 71, for sterilization using a disinfectant in the sterile water supply piping, a disinfectant is supplied to the replacement valve 72a upstream of the heater 72 to sterilize the sterile water supply piping from the replacement valve 72a through the heater 72 to each chamber. Sterilization in the sterile water supply piping from the replacement valve 69 to the replacement valve 72a preferably utilizes heated steam. This is because when a disinfectant is used to sterilize the sterile water storage tank 71, the amount of disinfectant used becomes large.

[0103] like Figure 7As shown, by providing a sterile water storage tank 71, sterile water can be produced and stored by the content sterilization device 66 during the CIP and SIP processes performed by the content sterilization device 66 when supplying the contents to the filling section 41 via the content supply piping after the CIP or SIP processes are completed when the contents are changed. Among the container sterilization chamber 33, air spray chamber 36, filling chamber 41, sealing chamber 46, discharge chamber 49, and outlet chamber 53, the filling chamber 41 is the largest chamber. Because the amount of sterile water to be supplied is large, there may be a shortage of sterile water when it is being produced and supplied simultaneously by the content sterilization device 66. By using the sterile water stored in the storage tank 71, the necessary amount of sterile water can be supplied to the filling chamber 41 and other chambers, allowing the SOP process of each chamber to be completed in a short time.

[0104] like Figure 8 As shown, multiple content sterilization devices 66 can also be installed. The purpose of installing multiple content sterilization devices 66 is to shorten the time required to change different contents. Since the content sterilization device 66 is a relatively high-temperature part, there is a possibility of scorching due to the contents. Sometimes, the CIP process of the content sterilization device 66 when changing contents requires a long time. In this case, by pre-setting multiple content sterilization devices 66, when one content sterilization device 66 is sterilizing and filling the contents, the CIP and SIP processes of another content sterilization device 66 are completed. Therefore, when changing contents, another content sterilization device 66 can be used on-site to sterilize and fill the next contents. After the CIP and SIP processes of another content sterilization device 66 are completed, sterile water can be produced and stored in the sterile water storage tank 71. The sterile water supply to each chamber can also be provided immediately when each chamber needs sterile water.

[0105] The sterile water supplied to each chamber is at a temperature of 20°C to 100°C, preferably 60°C to 100°C. This is achieved by supplying the sterile water, which has been heated and sterilized in the contents sterilization device 66, to each chamber while cooling it to 60°C to 100°C without cooling it to room temperature. In this case, it is not necessary to heat the sterile water using the heater 72. By setting the temperature of the sterile water to 60°C or higher, in addition to improving cleaning ability, it is expected that the heated sterile water will provide a sterilization effect against heat-resistant molds and yeasts that have been damaged by agents such as peracetic acid and alkali used as bactericides in the SOP process.

[0106] By setting the temperature of sterile water to 60℃~100℃ without using sterilizing agents such as peracetic acid or alkaline solutions, it is possible to sterilize molds, yeasts, and bacterial vegetative cells, excluding bacterial spores. If the temperature of the sterile water is set above 60℃, the cleaning effect is also high; therefore, sterilization and cleaning can be performed simultaneously in one process. Simultaneous sterilization and cleaning using heated sterile water is effective for SOP (Standard Operating Procedure) treatment of aseptic filling machines containing acidic beverages or mineral water. SOP treatment using heated sterile water can also be performed in the molding chamber 17 and the cap sterilization chamber 52, excluding the filling chamber 41 and sealing chamber 46 where product liquid splashes.

[0107] After blowing a disinfectant into each chamber, sterile water is blown in. However, before blowing the disinfectant, when the contents are dispersed in the filling chamber 41, sealing chamber 46, discharge chamber 49, and outlet chamber 53, cleaning liquid is blown in through the liquid blowing nozzle 59 to perform COP treatment on each chamber. The cleaning liquid is water or water containing acidic or alkaline compounds. The water can be any type of water that is free of impurities, such as ion-exchanged water, distilled water, or tap water. Acidic compounds refer to inorganic acids such as hydrochloric acid, nitric acid, and phosphoric acid, or organic acids such as acetic acid, formic acid, octanoic acid, oxalic acid, citric acid, succinic acid, and gluconic acid. Alkaline compounds refer to inorganic alkaline compounds such as sodium hydroxide and potassium hydroxide, or organic alkaline compounds such as ethanolamine and diethylamine. In addition, it may also contain chelating agents such as alkali metal salts, alkaline earth metal salts, ammonium salts, and ethylenediaminetetraacetic acid; anionic surfactants, cationic surfactants, nonionic surfactants such as polyoxyethylene alkylphenyl ethers; solubilizers such as sodium cumene sulfonate; acidic polymers such as polyacrylic acid or their metal salts; corrosion inhibitors; preservatives; antioxidants; dispersants; and defoamers. Furthermore, since these cleaning liquids also have bactericidal effects when heated to above 50°C, they can also be used as bactericides for sterilizing chambers.

[0108] like Figure 5 As shown, each chamber is equipped with a sterile air supply device 60. The sterile air supply device 60 is connected to the upper part of each chamber. The sterile air supply device 60 includes a blower 61, a heating device 62, and a sterilizing filter 63. The air from the blower 61 is heated by the heating device 62 and sterilized by the sterilizing filter 63, becoming sterile air, which is then supplied to each chamber. Figure 5 As shown, the sterilization filter 63 is positioned perpendicular to the top surface of the chamber to prevent cleaning liquid and disinfectant from adhering to its surface. The sterilization filter 63 can also be positioned parallel to the chamber surface.

[0109] In addition, each chamber is equipped with an exhaust device 64, which is linked to a sterile air supply device 60 to maintain the pressure in each chamber at an appropriate value.

[0110] The sterile water remaining in each chamber, blown from the liquid nozzle 59, is vaporized and removed using sterile air supplied from the sterile air supply device 60. Alternatively, the sterile air can be heated to rapidly remove the sterile water through vaporization. Furthermore, the sterile air supply device 60 supplies sterile air to each chamber to maintain sterility during operation of the aseptic filling machine. In this case, heating the sterile air may not be necessary.

[0111] Before sterilizing each chamber with a disinfectant primarily composed of hydrogen peroxide, it is preferable to dry the chamber as much as possible. In a humid state, hydrogen peroxide is dissolved in the liquid, and the concentration of hydrogen peroxide in gaseous form is reduced, thus failing to exert its sterilizing ability. To efficiently remove residual sterile water in each chamber in a short time, it is preferable to rotate the wheels in each chamber. During the CIP or SIP treatment of the filling section 39, the clutch of the filling section wheel 40 is closed, allowing the wheels other than the filling section wheel 40 to rotate. The rotation speed can be increased to the operating speed during production. Utilizing the centrifugal force generated by this high-speed rotation, sterile water adhering to wheels other than the filling section wheel 40, such as the sealing section wheel 45, air spray wheel 35, and wheel 28, as well as the clamp 22 and other parts inside the aseptic filling machine, can be removed. This residual water removal process is performed while supplying sterile air in a manner that does not reduce sterility. The removal of residual water in the filling section 39 is preferably performed after the CIP treatment of the filling section 39 and before the SOP treatment.

[0112] During sterilization before the aseptic filling machine is operated, a sterilizing agent is blown through a sterilizing agent nozzle 58, thereby sterilizing the surface of the sterilizing filter 63 as well. The surface of the sterilizing filter 63 can be sterilized using hydrogen peroxide gas or mist or a mixture thereof.

[0113] For the content supply system piping from the content sterilization device 66 to the filling nozzle 42, CIP and SIP processes are performed when the content is changed. This can be performed simultaneously with COP and SOP processes, or sequentially.

[0114] like Figure 6 As shown, a circulation line 73 is provided to circulate the cleaning liquid for CIP treatment discharged from the filling nozzle 42. The connection between the filling nozzle 42 and the circulation line 73 is not shown, and is achieved by a cap actuator located on the front end of the filling nozzle 42.

[0115] The inlet pipe 75, which supplies cleaning fluid to the circulation path 73 via the valve manifold 74, is connected to the circulation path 73. The supply sources for cleaning fluid, water, heated steam, and sterile air are connected to the upstream side of the inlet pipe 75 via various replacement valves. Various other valves and pumps are installed in the circulation path 73 and the inlet pipe 75, but are not shown in the diagram. A circulation piping 73a, connected to the outlet of the contents sterilization device 66, and a circulation piping 73b, connected to the upstream of the buffer tank 67, are provided from the valve manifold 74. Furthermore, a sterilization device circulation path 76 is provided in the circulation path 73a. That is, through the circulation path 76, and circulation paths 73 and 73b, which circulate within the contents sterilization device 66, a circulation path is formed from the buffer tank 67 and the pressure tank 68 to the filling nozzle 42. CIP treatment is performed by supplying cleaning fluid and water to these circulation paths from the inlet pipe 75 and circulating them. The cleaning fluid and water can be the same as those used in COP treatment.

[0116] Furthermore, SIP treatment is performed by supplying heated steam to the contents supply piping system. SIP treatment within the contents supply piping is also performed by blowing the heated steam from the filling nozzle 42. After SIP treatment, sterile air is introduced into the contents supply piping to maintain its sterility.

[0117] Implementation method 1 is an aseptic filling machine for sterilizing container 2, but preform 1 can also be sterilized before sterilizing container 2.

[0118] (Implementation Method 2)

[0119] exist Figure 9 Embodiment 2 of the present invention is shown. Embodiment 1 is an aseptic filling machine that sterilizes the container 2, and Embodiment 2 is an aseptic filling machine that sterilizes the preform 1 but not the container 2. Hereinafter, an aseptic filling machine equipped with a preform sterilization section 77 for sterilizing the preform 1 will be described.

[0120] (Summary of Implementation Method 2)

[0121] like Figure 9As shown, the aseptic filling machine of Embodiment 2 includes: a preform supply device 4 for supplying preforms 1; a preform sterilization section 77 for sterilizing the preforms 1; a heating section 6 for heating the preforms 1 to a temperature for forming a container 2; a forming section 16 for forming the heated preforms 1 into a container 2; an inspection section 78 for inspecting the formed container 2; a filling section 39 for filling the container 2 with sterilized contents after inspection and determination that it is normal; a cap sterilization section 52 for sterilizing the cap material 3, which serves as a sealing member; a sealing section 44 for sealing the container 2, which has been filled with contents by the sterilized cap material 3; a discharge section 47 for placing the sealed container 2 onto a discharge conveyor 50; and an outlet section 51 for discharging the container 2 to a non-sterile area via the discharge conveyor 50. The inspection section 78 may or may not be included.

[0122] Specifically, the preform sterilization section 77 is covered by the preform sterilization chamber 79, the heating section 6 is covered by the heating chamber 12, the molding section 16 is covered by the molding chamber 17, the inspection section 78 is covered by the inspection chamber 80, the filling section 39 is covered by the filling chamber 41, the sealing section 44 is covered by the sealing chamber 46, the discharge section 47 is covered by the discharge chamber 49, and the outlet section 51 is covered by the outlet chamber 53. Unlike Embodiment 1, the molding section 16 and the inspection section 78 are not in the same chamber and can be covered by the molding chamber 17 and the inspection chamber 80 respectively. Here, the cover material sterilization section 52 and the sealing section 44 can be covered by a single chamber. Additionally, the sealing section 44 and the discharge section 47 can also be covered by a single chamber.

[0123] Sterile air, which has been sterilized by a sterilization filter during the operation of the aseptic filling machine, is supplied to the heating chamber 12, forming chamber 17, inspection chamber 80, filling chamber 41, sealing chamber 46, discharge chamber 49, and outlet chamber 53. The pressure inside each chamber is set to positive pressure to maintain the sterility of the aseptic filling machine. The positive pressure is set such that it is highest in the filling chamber 41 and decreases further upstream or downstream. For example, when the pressure in the filling chamber 41 is set to 20 Pa to 40 Pa, the pressure in other chambers is lower than that in the filling chamber 41.

[0124] An exhaust mechanism, including a filter 81 that decomposes the disinfectant in the air within the preform sterilization chamber 79 and a blower 82, is connected to the preform sterilization chamber 79. During operation of the aseptic filling machine, by venting the air from the preform sterilization chamber 79, the disinfectant is prevented from flowing into the adjacent heating section 6. Therefore, during operation of the aseptic filling machine, the pressure within the preform sterilization chamber 79 is approximately equal to atmospheric pressure or is negative.

[0125] (Details of Implementation Method 2)

[0126] The pre-shaped preform 1 is fed to the pre-shaped preform 1 via the pre-shaped preform supply conveyor 5 at the desired speed. Figure 9 The preform supply device 4 shown continuously transports the preform to the preform sterilization section 77. The preform 1 is the same as in Embodiment 1.

[0127] The pre-shaped preform 1 is fed from the pre-shaped preform conveyor 5 and held by clamps 22 arranged at certain intervals on the wheels 7, such as... Figure 10 As shown in (I), the bactericide gas or mist or a mixture thereof is blown through the pre-shaped blank bactericide gas blowing nozzle 83 provided on wheel 7.

[0128] like Figure 10 As shown in (I), the bactericide gas, mist, or mixture thereof is divided into two groups and flows within the preform bactericide gas delivery nozzle 83. One nozzle 83a blows the bactericide into the interior of the preform 1, and the other nozzle 83b blows it towards the outer surface of the preform 1. After being delivered from the preform bactericide gas delivery nozzle 83, the bactericide gas, mist, or mixture thereof either flows into the interior of the preform 1 or comes into contact with the outer surface of the preform 1, either while still in a gaseous state or as a mist or mixture thereof.

[0129] After the bactericide gas, mist, or mixture thereof is blown into the interior of the preform 1, it overflows from the opening 1a of the preform 1. The overflowing bactericide gas, mist, or mixture thereof collides with the guide member 84 and is guided to the inner surface of the guide member 84. The flow changes to face the outer surface of the preform 1 and comes into contact with it. If an annular groove 84a is provided in the guide member 84, the overflowing bactericide gas, mist, or mixture thereof flows along the outer surface of the preform 1.

[0130] In this way, the bactericide gas or mist or their mixture comes into contact with and adheres to the inner and outer surfaces of the preform 1, thereby sterilizing bacteria and other organisms attached to the surface of the preform 1.

[0131] Figure 10 (I) The preform sterilizer gas delivery nozzle 83 shown can be configured not just one, but multiple nozzles arranged along the travel path of the preform 1, to deliver sterilizer gas, mist, or a mixture thereof from these preform sterilizer gas delivery nozzles 83 to the preform 1. In addition, by changing the diameter of the preform sterilizer gas delivery nozzles 83, nozzle 83a, or nozzle 83b, the diameter and number of sterilizer gas outlets provided at nozzle 83b, the amount of sterilizer adhering to the inner and outer surfaces of the preform 1 can be adjusted respectively.

[0132] It should be noted that sterile air at room temperature or heated can be supplied from the midway of the preform sterilizer gas blowing nozzles 83, 83a, and 83b to blow the sterilizer gas, mist, or mixture thereof diluted by the sterile air to the preform 1.

[0133] It should be noted that this can be done just before proceeding. Figure 10 (I) The bactericide gas shown is blown with hot air to the pre-shaped blank 1 before it is blown, thus preheating the pre-shaped blank 1. This preheating can further improve the bactericidal effect of the pre-shaped blank 1.

[0134] The same bactericide as in Embodiment 1 is used. Furthermore, the gasification of the bactericide is performed using the same bactericide gas generator 55 as in Embodiment 1. The blowing rate of the bactericide gas is arbitrary, but when the bactericide is hydrogen peroxide water, the amount of hydrogen peroxide adhering to the pre-shaped blank 1 is preferably 0.001 μL / cm based on the amount of hydrogen peroxide water containing 35% by mass of hydrogen peroxide. 2 ~0.5μL / cm 2 Adhesion amount ratio: 0.001 μL / cm 2 When the concentration is low, sufficient sterilization effect cannot be achieved. Furthermore, the adhesion concentration exceeds 0.5 μL / cm. 2 When the preform 1 is blow-molded into bottle 2, poor molding results occur in container 2, such as whitening, spots, wrinkles, and deformation, and the residual hydrogen peroxide in container 2 increases.

[0135] like Figure 10 As shown in (J), the pre-shaped blank 1, after being blown with sterile gas, can be held by clamp 22 and transported while being blown with sterile air through air blowing nozzle 85. The blowing of sterile air can be adjusted according to the type and amount of sterile agent.

[0136] The bactericide adhering to the surface of the preform 1 is activated by blowing sterile air, thus sterilizing bacteria on the inner and outer surfaces of the preform 1. Furthermore, the bactericide adhering to the preform 1 is rapidly removed from its surface by blowing sterile air. The bactericide adhering to the preform 1 is removed from it by blowing sterile air before heating. Additionally, foreign matter inside the preform 1 is also removed by blowing sterile air.

[0137] The sterile air can be at room temperature, but it is heated to become sterile hot air, thereby improving the sterilization effect and reducing the residue of hydrogen peroxide on the preform 1 when the sterilizing agent contains hydrogen peroxide. The heating of the sterile air is preferably such that the temperature of the sterile hot air blown onto the preform 1 is between 40°C and 140°C. Below 40°C, the effect of heating is minimal, and when the temperature of the preform 1 exceeds 70°C, defects such as deformation of the opening 1a of the preform 1 occur. Therefore, it is preferable that the temperature of the sterile hot air does not exceed 140°C.

[0138] like Figure 10 As shown in (J), sterile air is blown out from the slit-shaped outlet 85a of the box-shaped distributor 85b, which forms the main body of the air nozzle 85. Alternatively, the air nozzle 85 can follow the preform 1 to blow sterile air into it. Furthermore, the air nozzle 85 can be made into a rod shape and inserted into the preform 1, simultaneously removing foreign matter from within the preform 1 while blowing sterile air into it.

[0139] Figure 10 (I) shows the blowing of bactericide gas into the pre-shaped blank 1 as follows: Figure 9 As shown, the process is carried out via a pre-shaped preform sterilizing gas delivery nozzle 83 located on wheel 7. Figure 10 (J) shows the sterile air blowing of the pre-shaped blank 1 as follows: Figure 9 As shown, the process is performed via an air blowing nozzle 85 located on wheel 8. However, any process can be performed using either wheel 7 or wheel 8.

[0140] The pre-shaped blank 1 supplied to the heating section 6 arrives Figure 9 The heating section conveyor wheel 9 is shown. Afterwards, the heating process for the pre-shaped blank 1 is the same as in Embodiment 1. Figure 9 As shown, the heated pre-shaped blank 1 is transported to the forming section 16 via the wheel 15. The transport path within the wheel 15 is configured as follows: Figure 9 The preform channel 86 is shown surrounding the transport path of the preform 1. The preform channel 86 covers the opening 1a of the preform 1 from above, and the roof portion is formed in a roof shape with an inclined surface. Furthermore, nozzles are provided in the roof portion in a row or slit pattern to blow sterile air into the opening 1a of the preform 1. Thus, sterile air is effectively supplied to the preform 1, and the preform 1 is delivered to the forming wheel 18 of the forming section 16 while maintaining sterility.

[0141] The molding process of the preform 1 after being delivered to the molding wheel 18 is the same as that in embodiment 1.

[0142] The formed container 2 is transported to the inspection section 78 via wheel 23. During the transport path within wheel 23, such as... Figure 9A container channel 87 is provided around the transport path of the container 2. The container channel 87 covers the opening 1a of the container 2 from above, and the roof portion is formed into a roof shape with a sloping surface. In addition, nozzles are provided in rows or slits in the roof portion to blow sterile air into the opening 1a of the container 2. As a result, sterile air can be efficiently supplied to the container 2, allowing the container 2 to travel within the forming chamber 17 while maintaining sterility.

[0143] Container 2 is delivered via wheel 23 to inspection wheel 88 of inspection section 78. Only containers 2 that pass inspection and are confirmed to be free of defects are further transported to filling section 39. It is preferable to inspect containers 2 via inspection section 78 in a manner that prevents the production of unsuitable products using containers 2 that have defects due to molding defects, etc. If any defects are found during inspection, the container is then... Figure 9 The defective container discharge device 89 shown discharges the defective container to the outside of the aseptic filling machine. An inspection device 24 for inspecting the container 2 is provided along the inspection wheels 88 and 90 of the inspection section.

[0144] Before operation, the inspection chamber 80 is sterilized, and sterile air is supplied during operation to maintain a sterile atmosphere. During sterilization before the aseptic filling machine operates, the inspection device 24, which inspects container 2, is housed in a sealed container in a manner that prevents it from contacting the disinfectant. This is to prevent the inspection device 24 from contacting the disinfectant and causing corrosion. In other words, the inspection section 78 is equipped with an inspection device 24 housed in a sealed container. The inspection items and procedures are the same as in Embodiment 1, but since container 2 has already been sterilized, temperature measurement is not required.

[0145] Containers 2 that are deemed abnormal upon inspection are discharged to the outside of the aseptic filling machine via discharge device 89 provided on discharge wheel 91, while containers 2 that are deemed normal are transported to filling section 39 via wheel 92. The processes in filling section 39, sealing section 44, and discharge section 47 are the same as in embodiment 1.

[0146] Before operating the aseptic filling machine, the heating chamber 12 and the molding chamber 17 are sterilized. For example, as one sterilization method, gas sterilization is performed on the heating chamber 12 and the molding chamber 17 by using air containing hydrogen peroxide at a concentration of 20 mg / L or less. In this case, the heating chamber 12 and the molding chamber 17 are provided with the same equipment as in Embodiment 1. Figure 5The sterilizing agent nozzle 58 is shown. Alternatively, a UV lamp can be used to irradiate the areas where the preform 1 and container 2 come into contact (ultraviolet sterilization). Alternatively, liquid sterilizing agent can be introduced into the interior of the preform 1 by dripping or other methods. With sterilizing agent residue remaining inside the preform 1, air can be blown directly into the preform 1 from the nozzle 21, causing the sterilizing agent to diffuse within the molding chamber 17, thereby sterilizing the molding chamber 17. In sterilization of the heating chamber 12 and molding chamber 17 using hydrogen peroxide, the possibility of sterilizing agent residue is low; therefore, spraying within the chamber using sterile water is not necessary.

[0147] To maintain the sterility of the heating chamber 12 and the molding chamber 17 during the operation of the aseptic filling machine, sterile air is supplied to the heating chamber 12 and the molding chamber 17. Similar to Embodiment 1, the heating chamber 12 and the molding chamber 17 are equipped with a sterile air supply device 60.

[0148] Examination chamber 80 and Figure 5 As shown in Embodiment 1, it includes a sterilizing agent nozzle 58, a liquid nozzle 59, and a sterile air supply device 60. The sterilization of the inspection chamber 80 before operation of the aseptic filling machine is performed in the same manner as in the chambers of Embodiment 1.

[0149] The cleaning and sterilization of the filling chamber 41, sealing chamber 44, discharge chamber 49, and outlet chamber 53 are the same as in Embodiment 1. In the filling chamber 41, due to the significant contamination caused by the dispersion of contents within the chamber, a Standard Operating Procedure (SOP) using peracetic acid or an alkaline solution as a sterilizing agent is performed; therefore, cleaning with sterile water is necessary. However, the contamination of the inspection chamber 80, discharge chamber 49, and outlet chamber 53 is limited; therefore, sometimes an SOP using only hydrogen peroxide is performed. In this case, cleaning with sterile water is not required. Therefore, sterile water produced by the contents sterilization device 66 is supplied to at least the filling chamber 41. Furthermore, at least the filling chamber 41 is equipped with a sterile water supply device 70 for supplying the sterile water produced by the contents sterilization device 66.

[0150] Furthermore, if the sealed chamber 46 is also contaminated with contents, a standard operating procedure (SOP) is performed using a bactericide such as peracetic acid or an alkaline solution with sodium hydroxide as the main component. Therefore, sterile water produced by the contents sterilization device 66 is also supplied to the sealed chamber 46.

[0151] At least during the SOP treatment of the filling chamber 41 before the operation of the aseptic filling machine, after spraying the disinfectant into each chamber, sterile water is supplied to each chamber from the sterile water supply device 70 to rinse the disinfectant.

[0152] The embodiments of this application have been described using an aseptic filling machine that forms a preform 1 into a container 2. However, in addition to containers that form preforms, the aseptic filling machine can also be applied to lids, liquid paper containers, and film packaging.

Claims

1. An aseptic filling machine, comprising at least sequentially arranged filling sections for filling sterilized contents, which have been sterilized by a contents sterilization device, into sterilized containers in an aseptic atmosphere, and... A sealing portion that uses sterilized capping material to seal the container filled with the contents in a sterile atmosphere. The aseptic filling machine has a filling chamber that at least covers the filling portion. The aseptic filling machine is equipped with an aseptic water supply device, which supplies water as follows: sterile water that has been sterilized by the contents sterilization device is cooled to 60°C to 100°C and directly blown into at least the filling chamber of the aseptic filling machine without storage.

2. The aseptic filling machine according to claim 1, wherein, The sterile water supply device includes a sterilization device that uses a sterilizing agent to sterilize the sterile water supply piping, and the sterile water supply piping supplies the sterile water from the contents sterilization device to at least the filling chamber.

3. The aseptic filling machine according to claim 1 or 2, wherein, Multiple sterilization devices for the contents are provided.

4. A purification method for an aseptic filling machine, wherein the aseptic filling machine is sequentially provided with at least a filling part for filling a sterilized container with contents sterilized by a contents sterilization device in an aseptic atmosphere, and a sealing part for sealing the container filled with the contents with a sterilized cap material in an aseptic atmosphere. The aseptic filling machine has a filling chamber that at least covers the filling portion. The method includes: The interior of the filling chamber is purified by directly supplying sterile water, which has been sterilized using the contents sterilization device, to the filling chamber without storage, at least by blowing the sterile water into the filling chamber.

5. The purification method for the aseptic filling machine according to claim 4, the method comprising: The sterile water supply piping is sterilized using a bactericide, and the sterile water supply piping supplies the sterile water from the contents sterilization device to at least the filling chamber.

6. The purification method for the aseptic filling machine according to claim 4 or 5, the method comprising: The sterile water is supplied from at least one of the plurality of contents sterilization devices.

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