JP2006036343A - Spray sterilizing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spray sterilizing apparatus which atomizes a sterilizing agent such as a hydrogen peroxide water solution without heating or using air spray, sticks it on a packaging material with a hot air and sterilizes it. <P>SOLUTION: The spray sterilizing apparatus atomizes the sterilizing agent such as the hydrogen peroxide water solution, mixes it with the hot air and sticks it on the food packaging material to sterilize it. The spray sterilizing apparatus is equipped with an ultrasound generating part which atomizes the sterilizing agent such as the hydrogen peroxide water solution, and a mixing part which uniformly mixes the atomized sterilizing agent with the hot air. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sterilizing apparatus that sterilizes a packaging material such as food by spraying a sterilizing agent. Examples of foods include alcoholic beverages such as alcohol, wine and whiskey; non-alcoholic beverages such as water, juice, coffee and tea; desserts such as jelly and pudding. In addition to long packaging materials, the packaging materials include paper containers, plastic containers, plastic cups, plastic bottles, and the like.

(1) Prior art 1
An apparatus shown in FIG. 8 is known as a sterilizing apparatus for sterilizing packaging materials such as food.
This apparatus sterilizes long packaging materials, and an aqueous hydrogen peroxide solution or the like is used as a sterilizing agent. That is, first, the long packaging material 105 is passed through the solution tank 133 in the chamber [chamber: chamber (such as air or steam in the machine)]. A bactericidal agent 132 is stored in the solution tank 133 and sterilizes the packaging material 105. Next, the packaging material 105 is heated by the heating device 104. By this heating, the disinfectant adhering to the surface of the long packaging material 105 is thermally decomposed or dried.

(2) Prior art 2
A method 200 shown in FIG. 9 is also known as a method for sterilizing long packaging materials (see Patent Document 1). In this method, a long packaging material 125 is unwound from the unwinding side 127 and is sterilized by irradiating the irradiation lamp 126 with light. The wavelength of light is 200 nm to 1100 nm, one irradiation is less than 0.002 seconds, and the cumulative irradiation energy is 12.0 J / cm ² or less. The sterilized packaging material is then wound up on the winding side 128.

(3) Prior art 3
Furthermore, an apparatus 300 as shown in FIG. 10 is also known as a packaging container sterilization apparatus. In this apparatus, a long packaging material is first sterilized in a sterilization tank 133 provided on one end side of the sterilization apparatus main body 300. Next, this packaging material is heated with a heater 134 (heating device) and molded with a molding device 135. Next, the contents are filled by the filling device 136. On the other hand, the long lid is first sterilized in the sterilization tank 133. And the said cover material is piled up on the packaging material (packaging container) with which the content was filled, and it seals with the sealing device 137. FIG.

(4) Prior art 4
Moreover, the sterilizer 400 as shown in FIG. 11 is also known (refer patent document 2). In this apparatus, first, a liquid having an antibacterial action such as a low concentration hydrogen peroxide solution 141 is attached to the packaging material 142 by spraying or dipping. Next, the packaging material 142 is irradiated with high-powered paras using a xenon lamp 143.

(5) Prior art 5
Furthermore, a sterilizer 500 as shown in FIG. 12 is also known (see Patent Document 3). In this apparatus, a sterilizing agent 151 such as hydrogen peroxide solution is sprayed into the cylindrical heater 152, gasified while being heated, and supplied to the sterilizing agent spray nozzle 153. At this time, a cylindrical breathable auxiliary heating body 154 is arranged in the cylindrical heater 152 to promote vaporization of the bactericide. Then, the gasification sterilizing agent is sprayed from the sterilizing agent spray nozzle 153 to sterilize the packaging material such as the carton container main body 155.

(6) Prior art 6
Further, a sterilization apparatus 600 shown in FIG. 13 is also known as a sterilization apparatus used for sterilization of PET bottles and paper containers (see Patent Document 4). This sterilizer 600 uses a mixture of a virgin sterilizer such as hydrogen peroxide and a used sterilizer. That is, the virgin disinfectant and the used disinfectant are both supplied to the disinfectant supply unit 161 using the two-fluid spray device 163 and sprayed. A sterilizing agent vaporization unit 162 is provided at the tip of the sterilizing agent supply unit 161, and the sterilizing agent is vaporized and sprayed on the packaging material. On the other hand, it has a sterilizing agent recycling apparatus including an exhaust sampling port 166, an exhaust supply pipe 164, a heating device 167, and a blower 168, and the used sterilizing agent can be supplied again to the sterilizing agent supply unit 161.

Prior art documents are shown below.
JP 2000-159209 A JP 2000-203535 A JP-A-9-286416 JP 11-47242 A

(1) About Prior Art 1 In Prior Art 1, after a large amount of a bactericidal agent is attached to a packaging material, it is decomposed or dried by heating. However, when the packaging material is water-absorbing paper or the like, or when the end surface of the packaging material is water-absorbing, there is a problem that this portion absorbs the bactericidal agent and remains after heating.

  For this reason, there exists a problem that the material of a packaging material which can be applied, or a material structure etc. are restrict | limited.

  Furthermore, since this apparatus has a large amount of sterilizing agent attached to the packaging material, it is necessary to enhance the ability to thermally decompose and dry the sterilizing agent. For this reason, there is a problem that the heating section becomes large and the apparatus becomes expensive in terms of cost.

  In addition, if a machine trouble occurs and the temperature of the heating unit is lowered to check the troubled part, when the operation is performed again, the operation of the sterilizer cannot be performed until the temperature of the heating unit becomes sufficiently high. There's a problem.

(2) Prior Art 2 Prior Art 2 has a problem that the sterilization rate is very slow.

  Further, when high luminescence energy is applied in order to increase the sterilization time, there is a problem that the irradiated packaging material emits odor or the sealing strength of the irradiated packaging material is lowered. Furthermore, when printing is performed on the packaging material to be irradiated, there is a problem that the printing surface of the packaging material is burnt.

  In addition, the power source and the device for irradiation are expensive, the maintenance cost of the irradiation lamp and the like is high, and there is a problem that the emission energy decreases with the use of the irradiation lamp.

(3) Prior art 3 Prior art 3 is a prior art in which a bactericidal agent adheres to the packaging material in a large amount, takes a long time for thermal decomposition and drying, and the material or composition of the packaging material is restricted. There is a problem similar to Technology 1.

  In addition, since a large amount of the bactericidal agent is attached, a time for heating and decomposing and drying the bactericidal agent and a space for the heating unit are required. For this reason, there exists a problem that a sterilizer main body becomes large-sized and cost becomes high, and also the wide space which installs a sterilizer main body is needed.

  In addition, when a machine trouble occurs and the machine is stopped, the packaging film to be sterilized is immersed in the sterilization tank. is there. In addition, when the trouble of the machine occurs and the temperature of the heating unit is lowered to check the troubled part, when the operation is performed again, the operation of the sterilizer cannot be performed until the temperature of the heating unit becomes sufficiently high. There is.

(4) Prior Art 4 In Prior Art 4, in order to speed up the sterilization apparatus and match the line speed of the filling and packaging machine, it is necessary to cause the xenon lamp to emit light with high light emission energy. However, when trouble occurs, the packaging material may be odorized by irradiation with a xenon lamp, or the sealing strength of the packaging material may be reduced. Furthermore, there is also a problem that the printing surface is burnt when the packaging material is printed.

  In addition, when the packaging material has a relatively small opening area such as a paper container and has a high height (depth), it is difficult to irradiate in the bottom direction, and the bactericidal effect differs between the opening periphery and the bottom direction. There is a problem.

  In addition, the life of a xenon lamp is determined by the number of times of light emission, and since the light emission energy decreases somewhat with use, the xenon lamp is replaced after a certain period of use. For this reason, there is a problem that maintenance costs are required, and further, the power supply and the device are expensive.

(5) About Prior Art 5 In Prior Art 5, since all the means for gasifying the sterilizing agent are heater heating, it takes time for the heaters of each part to reach an appropriate temperature when operating the sterilizing apparatus. There is a problem that cannot be operated immediately.

  Furthermore, when the spray amount of the bactericide must be increased from the primary spray nozzle during operation, there is a problem that it is necessary to wait until the temperature of the heated portion of the cylindrical heater rises to a predetermined temperature. Furthermore, since many heaters for gasification are used, there is a problem that the power supply becomes large and the maintenance cost of the sterilizer becomes high.

  In addition, since the nozzle is used for primary spraying, there is a problem in that the nozzle and the piping pipe that conveys the sterilizing agent are clogged, or the sterilizing agent is decomposed in the piping pipe to generate bubbles, resulting in spray failure. Furthermore, when stopped due to troubles in the sterilizer, etc., each part is excessively heated by the heating blower, auxiliary heating, or cylindrical heater used in the sterilizer, so it is used for each part of the sterilizer. There is a problem that many damages such as packing are generated.

(6) Prior Art 6 In Prior Art 6, since the sterilizing agent is heated by the heater heating device, as in Prior Art 5, the use of a large number of heaters increases the power source and increases the maintenance cost of the sterilizing device. There is a problem. Furthermore, since all the means for gasification are performed by heater heating, there is a problem that it takes time to operate the apparatus.

  In addition, since the two-fluid spray device is used, a nozzle or a piping pipe that conveys the sterilizing agent is clogged, and the sterilizing agent is decomposed in the piping pipe to generate bubbles, thereby causing a spray failure.

The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide the following spray sterilization apparatus.
That is, the first object of the present invention is to provide an apparatus capable of atomizing a bactericide such as an aqueous hydrogen peroxide solution without being heated by a heater or the like.

  The second object of the present invention is to provide an apparatus capable of operating the sterilizer at the moment when stopping and restarting operation.

  A third object of the present invention is to provide an apparatus that does not require a large installation space, is inexpensive, and has a low maintenance cost.

  Furthermore, a fourth object of the present invention is to provide an apparatus that can sterilize any packaging material uniformly and sufficiently without any restrictions on the packaging material.

In order to solve the above problems, first, the invention according to claim 1 of the present invention is:
A disinfectant spraying device that atomizes a disinfectant such as an aqueous hydrogen peroxide solution and attaches the disinfectant to the packaging material with air to disinfect,
Bactericidal storage control means for always storing an appropriate amount of the bactericidal agent in the atomization storage tank;
A disinfectant atomizing means provided in the atomization storage tank and atomizing the stored disinfectant;
Sterilization means for transporting the atomized disinfectant by air and attaching it to the packaging material;
It is a spray sterilizer characterized by comprising.

Next, the invention according to claim 2 of the present invention is as follows:
2. The spray sterilizer according to claim 1, wherein the sterilizer atomizing means is an ultrasonic generator.

The invention according to claim 3 of the present invention is
The spray sterilization apparatus according to claim 1 or 2, wherein the sterilizing agent storage control means is a level sensor that senses the depth of the sterilizing agent stored in the atomization storage tank.

  Since the spray sterilization apparatus of the present invention does not use a spray when atomizing a sterilizing agent such as an aqueous hydrogen peroxide solution, the sterilizing agent is not clogged with a spray nozzle or piping pipe, or a spray nozzle failure is not caused at all. .

  In addition, when the operation is stopped due to a trouble of the apparatus and the operation is performed again, the operation can be restarted at a short time without waiting for the heating temperature of the heating unit to rise to a constant temperature.

  Further, since the atomization of the bactericide is not due to heating, it does not condense due to a decrease in temperature. Moreover, since there are few parts to be heated, there is no damage to the apparatus due to heating.

  Furthermore, since the spray sterilization apparatus of the present invention is compact without complicated structures and mechanisms, it can be produced at low cost. Furthermore, since a heater or a light-emitting lamp for atomizing the sterilizing agent is not used, the maintenance cost including the power consumption cost is low.

  Moreover, since the disinfectant is atomized and then transferred by air, it can be reliably, uniformly and sufficiently efficiently attached to the packaging material. Moreover, since the structure is simple, there are few troubles such as failures.

  A spray sterilization apparatus according to the present invention will be described below in detail according to an embodiment with reference to the drawings. 1 to 7 show an embodiment of the present invention. The spray sterilization apparatus of the present invention is a sterilization apparatus that sterilizes a packaging material such as food by spraying a sterilizing agent.

(1) Food and packaging materials Examples of food include alcoholic beverages such as liquor, wine and whiskey; non-alcoholic beverages such as water, juice, coffee and tea; desserts such as jelly and pudding. In addition to long packaging materials, the packaging materials include paper containers, plastic containers, plastic cups, plastic bottles, and the like. When the packaging material is a paper container or a plastic container, it is possible to sterilize blanks and long sheets before they are formed.

(2) Outline of spray sterilization apparatus FIG. 1 is an explanatory view for explaining the outline of one embodiment of the spray sterilization apparatus of the present invention. In FIG. 1, reference numeral 1 denotes a primary storage tank for storing a bactericide such as an aqueous hydrogen peroxide solution. The primary storage tank 1 is provided with a supply piping pipe 6, and this supply piping pipe 6 is connected to the atomization storage measurement tank 4 via a filter 7, a switching valve 8, a filter 9, and a water supply pump 2. . And the said disinfectant is sent to the atomization storage measurement tank 4 by driving the supply pump 2.

  The atomization storage measuring tank 4 is provided with a connection pipe 5, and the connection pipe 5 is connected to the atomization storage tank 12 through a filter 11. Then, the sterilizing agent is sent to the atomization storage tank 12 by the connecting pipe 5. A storage tank drain pipe 16 is connected to the atomization storage measurement tank 4, and the storage tank drain pipe 16 is connected to the primary storage tank 1 via a filter 18.

  In addition, an ultrasonic generator 35 is provided on the base 34 below the bottom of the atomization storage tank 12. Then, the disinfectant stored in the atomization storage tank 12 is atomized by the ultrasonic generator 35 and introduced from the ascending pipe 15 to the transport pipe 24.

  On the other hand, the spray sterilization apparatus of the present invention is provided with an air generation unit 30, and this air generation unit 30 is provided with a transfer pipe via a flow control valve 29, a flow meter 28, an air filter 27, and a heating unit 26. 24. The air generated in the air generating unit 30 is heated by the heating unit 26 to become hot air, and is mixed with the mist-like disinfectant in the transport pipe 24.

  Further, the transport pipe 24 is connected to the chamber 31, and the transport pipe 24 between the mixed flow part 22 and the chamber 31 is kept warm by the heat insulating material 23. Then, the mist sterilizing agent is conveyed to the sterilizing unit 33 in the chamber 31 through the conveying pipe 24. By disposing the packaging material in the sterilizing unit 33, the mist-like disinfectant can be attached to the packaging material and sterilized.

  Here, the filter 7 removes suspended substances and suspended substances or foreign matters mixed in the bactericide. As the filter 7, for example, a filter press (a filtration device that performs filtration on a liquid to be filtered using filter paper or filter cloth) can be used.

Further, the switching valve 8 can be used as long as the direction of liquid feeding can be switched when the bactericide is sent to the atomization storage measuring tank 4 and when the bactericide in the primary storage tank 1 is replaced or discarded. good. For example, a three-way valve can be used. There are many valves such as bronze, cast steel or forged steel, but stainless steel is preferable.

  In addition, a storage tank drain switching valve 21 for discharging the bactericide stored in the primary storage tank 1 is provided on the bottom lower surface of the primary storage tank 1. As the valve 21, a valve made of bronze, cast steel, forged steel or the like can be used, but it is preferably made of stainless steel.

  Further, a turbo pump can be used as the supply pump 2 of the primary storage tank 1. For example, a centrifugal pump, a mixed flow pump, or an axial pump. A positive displacement pump can also be used as the supply pump 2. For example, a reciprocating pump or a rotary pump. Also, a special pump can be used as the supply pump 2. For example, a vortex pump, a bubble pump, a water hammer pump, or a viscous pump. Among these, a turbo pump that can be applied to the discharge amount and the total head (all heads produced by pump operation) is desirable.

  Further, as described above, in the spray sterilization apparatus of the present invention, when a sterilizing agent exceeding the fixed amount is fed to the atomization storage measuring tank 4, the sterilizing agent in excess exceeds the primary amount via the filter 18. It is returned to the storage tank 1. Similarly, the disinfectant liquefied in the mixed flow part 22 or the like is returned to the primary storage tank 1 through the filter. For this reason, when the spray sterilization apparatus is stopped and the generation of air is stopped, the sterilizing agent in the mixed flow portion can be returned to the primary storage tank 1 and reused.

  Further, although not shown in the figure, the concentration of the bactericide stored in the primary storage tank 1 is also measured by the sensor. For this reason, the density can be adjusted by a signal from the control panel, and the density is always kept constant.

  The air generating unit 30 includes an air blower serving as an air supply source, and a filter connected to the air blower via a duct. An air compressor can also be used as an air supply source. In this case, compressed air is supplied from an air compressor. Furthermore, a drain and a drain valve for discharging water droplets and the like generated when supplying compressed air or the like may be provided in the lower portion of the air generating unit 30.

  In the spray sterilization apparatus shown in FIG. 1, a flow rate control valve 29 is provided to change the supply amount of air generated by the air generation unit 30. As the flow rate control valve 29, a throttle valve, a slow return valve, a flow rate adjustment valve, a bypass type flow rate adjustment valve, a shunt valve or the like can be used. The flow rate adjusting valve, bypass type flow rate adjusting valve, or diversion valve generally has a pressure compensation function, and can maintain a flow rate at a constant value regardless of a pressure change caused by a back pressure or a load.

  Moreover, in the spray sterilization apparatus shown in FIG. 1, the flowmeter 28 which measures the flow volume of air is provided, and it can be confirmed whether the flow volume is blowing as set. As the flow meter 28, for example, a volumetric flow meter, an ultrasonic flow meter, an electromagnetic flow meter, a Karman vortex flow meter, a Thomas meter, a gas meter, or the like can be used. As the volumetric flow meter, for example, a reciprocating piston type, a root type, a vane type, a drum type, and a back type are commercially available at low cost.

  An air filter 25 is provided between the flow meter 28 and the air heating unit 22. The air filter 25 separates gas from solid substances such as dust and solids and liquids. Various types of air filters 25 can be used depending on the purpose of use, and there are many types. Examples thereof include a filter using glass wool, glass wool membrane, stainless steel net, sintered alloy, ceramic or the like as a filter element (filter material). The material or the like may be appropriately selected depending on the size of the mesh of the filter element depending on the dust particles.

(3) Outline of Atomization Reservoir 12 Next, FIG. 2 is an explanatory diagram for explaining the outline of the atomization storage tank 12 of FIG. As shown in FIG. 2, the disinfectant 36 sent from the primary storage tank 1 is sent to the atomization storage tank 12 via the atomization storage measurement tank 4 and the connecting pipe pipe 5. In order to always store an appropriate amount of the sterilizing agent 36 in the atomizing storage tank 12, the sterilizing agent 36 at the same level as the atomizing storage tank 12 is stored in the atomizing storage measuring tank 4.

  Further, since an appropriate amount of the bactericide 36 is always stored in the atomization storage tank 12, the level sensor 3 is provided in the atomization storage measurement tank 4, and the atomization storage tank 12 and the atomization storage measurement tank 4 are detected by the level sensor 3. The disinfectant 36 stored in the container is kept in an appropriate amount.

  Examples of the level sensor 3 include a bubble type liquid level gauge, a differential pressure type liquid level gauge, a diaphragm type liquid level gauge, a displacement type liquid level gauge, a capacitance type level gauge, an electrode type level gauge, a glass gauge and a magnet gauge. A level meter, a sonic level meter, a radiation level meter, a resistance short-circuit level meter, etc. can be used. A level sensor capable of transmitting measured values in the form of electrical signals is preferred. For example, an electrode type level meter suitable for a relatively inexpensive and conductive liquid can be used.

  Further, immediately after the atomized bactericidal agent 36 and air meet, baffle plates 38 are provided in a staggered manner to form the mixed flow portion 22, and the bactericidal agent 36 and air are stirred and mixed in this mixed flow portion 22. In addition, finer atomized disinfectant particles are generated.

(4) Conveyance of disinfectant to sterilization part 33 Moreover, the temperature of about 40 degreeC-150 degreeC is suitably selected and used for the temperature of the atomization disinfectant introduced into the sterilization part 33 according to a packaging material.

  Moreover, although the magnitude | size of the atomization disinfectant particle | grains introduce | transduced into the sterilization part 33 is not specifically limited, The smaller one is preferable, for example, it is 10 micrometers-30 micrometers.

  Moreover, in order to prevent the temperature drop of the hot air produced | generated by heating with the air heating part 26, the outer surface of the conveyance pipe 24 and the mixed flow part 22 from the air heating part 26 to the sterilization part 33 is heat-retained with the heat insulating material 23. .

  Further, although not shown in the drawing, a temperature sensor for controlling the temperature of hot air is provided in the vicinity of the inlet of the sterilizing section 33 of the transport pipe 24. By this temperature sensor, the disinfectant 36 attached to the packaging material can always be controlled to an appropriate temperature.

(5) Improvement of intersection 39 Further, as shown in FIG. 3, a tapered throttle 40 is provided on the inside of the conveyance pipe 24 of the intersection 39 where the rising pipe 15 intersects the conveyance pipe 24 in the direction of the air heating unit 26. It can also be provided. By this throttle part 40, hot air can be jetted into a jetting state, and the hot air and the atomizing fungicide 36 can be stirred and mixed more uniformly, and an atomized fungicide with fine particles can be obtained. it can.

(6) Improvement concerning the ultrasonic generator 35 Although not shown in the figure, the connection pipe 5 that connects the atomization storage tank 12 and the atomization storage measurement tank 4 in consideration of vibrations by the ultrasonic generator 35. A vibration absorbing member or the like is partially used at the connecting joint portions at both ends of the. As the vibration absorbing member, for example, a cork material, rubber, foamed plastic, or the like can be used.

  The ultrasonic generator 35 can use any piezoelectric material that generates ultrasonic waves. For example, piezoelectric ceramics, piezoelectric polymer films or piezoelectric thin films.

(7) Summary of Embodiment of Packaging Material Type and Sterilization Unit FIG. 4 is a schematic diagram showing an outline of an embodiment of an injection unit used in the sterilization unit of the present invention. As shown in FIG. 4, the atomizing sterilizing agent 36 is sprayed from the spray duct 42 of the sterilizing part in the chamber and uniformly and sufficiently adhered to the long packaging material 41, and then heated and dried in the next step. .

  The injection duct 42 is provided with a baffle plate inside, and the atomized disinfectant 36 is ejected from a circular state to a slit state. Therefore, the atomizing disinfectant 36 adheres uniformly in the width direction of the packaging material 41.

  Further, the transport pipe 24 and the injection duct 42 are connected by a ferrule union 43. By being connected by the ferrule union 43, the injection duct 42 can be easily attached and can be easily removed. Furthermore, sanitary correspondence is made.

  Next, FIG. 5 is a schematic view showing an outline of another embodiment of the injection unit used in the sterilization unit of the present invention. As shown in FIG. 5, after the paper packaging container 45 is sprayed with the atomizing sterilizing agent 36 from the spray cylinder 44 of the sterilization unit in the chamber and uniformly and sufficiently efficiently adhered to the paper packaging container 45. In the next step, heat decomposition and drying are performed.

  The injection cylinder 44 has a rule formed in the opposite direction in which the atomized sterilizing agent 36 is injected, and is connected to a rule formed in the outlet direction of the transport pipe 24 via a rule gasket.

  Next, FIG. 6 is a schematic view showing the outline of still another embodiment of the injection unit used in the sterilization unit of the present invention, in the case of sterilizing the inside of the cylindrical container 46 in which the opening 50 is provided. Is shown. FIG. 7 is a schematic view showing a case where the inside of the self-supporting packaging bag 48 provided with the spout 49 is sterilized.

  When the inside of the cylindrical container 46 is sterilized, the atomized sterilizing agent may be ejected using a tapered injection pipe 44 in which an injection port that is the same as or slightly smaller than the opening 50 is formed. The injection pipe 44 is provided with a ferrule, and the ferrule can be connected to the ferrule of the injection pipe 44 via a ferrule gasket.

  In addition, the self-standing packaging bag 48 shown in FIG. 7 similarly ejects the atomized disinfectant using a tapered injection pipe 44 in which an injection port that is the same as or slightly smaller than the opening of the spout 49 is formed. Just do it. The injection pipe 44 is provided with a ferrule, and the ferrule can be connected to the ferrule of the injection pipe 44 via a ferrule gasket.

  Further, in addition to attaching the sterilizing agent 36 to the inner surface of the paper packaging container or cylindrical container or the self-supporting packaging bag, and when it is necessary to sterilize by attaching to the outer surface, the inner surface is sterilized and then sterilized. The outer surface can be sterilized by passing through air filled with the sterilizing agent 36 as a whole.

  Examples of the ferrule gasket include silicon, acrylonitrile-butadiene rubber (NBR), ethylene propylene diene ternary copolymer rubber (EPDM), fluoropropylene methacrylate copolymer (FPM), polytetrafluoroethylene (PTFE), and the like. These materials are appropriately used.

  The spray sterilization apparatus of the present invention can be applied to sterilization of long packaging materials or food packaging materials such as plastic containers, plastic cups, and plastic bottles. In addition, it can be used in a wide range of fields, such as sterilization of various equipment used in operating rooms and clean rooms.

It is explanatory drawing explaining the outline of one Example of the spray sterilizer of this invention. It is explanatory drawing explaining the outline of the atomization storage tank of one Example of the spray sterilizer of this invention. It is explanatory drawing explaining the outline of the atomization storage tank of one Example of the spray sterilizer of this invention. It is the schematic which shows the outline of one Example of the injection part used for the sterilization part of this invention. It is the schematic which shows the outline of the other Example of the injection part used for the sterilization part of this invention. It is the schematic which shows the outline of the other Example of the injection part used for the sterilization part of this invention. It is the schematic which shows the outline of the other Example of the injection part used for the sterilization part of this invention. It is the schematic which shows the outline of the sterilizer currently used conventionally. It is the schematic which shows the outline of the sterilizer currently used conventionally. It is the schematic which shows the outline of the sterilizer currently used conventionally. It is the schematic which shows the outline of the sterilizer currently used conventionally. It is the schematic which shows the outline of the sterilizer currently used conventionally. It is the schematic which shows the outline of the sterilizer currently used conventionally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Primary storage tank 2 ... Supply pump 3 ... Level sensor 4 ... Atomization storage measurement tank 5 ... Connection piping pipe 6 ... Supply piping pipe 7 ... Filter 8 ... Switching valve 9 ... Filter 10 ... Drain and discharge valve 11 ... Filter 12 ... Atomization storage tank 13 ... Atomization storage tank drain pipe 14 ... Switching valve 15 ... Rising pipe 16 ... Flow piping pipe 17 ... Storage tank drain pipe 18 ... Filter 19 ... Return pipe 20 ... Switching valve 21 ... Storage tank drain switching valve DESCRIPTION OF SYMBOLS 22 ... Mixed flow part 23 ... Insulation material 24 ... Conveyance pipe 25 ... Air filter 26 ... Air heating part 27 ... Air filter 28 ... Flow meter 29 ... Flow control valve 30 ... Air generation part 31 ... Chamber 32 ... Heat drying part 33 ... Sterilization Part 34 ... Base 35 ... Ultrasonic generator 36 ... Disinfectant 37 ... Bactericidal agent 38 ... baffle plate 39 ... intersection 40 ... throttle part 41 ... long packaging material 42 ... injection duct 43 ... ferrule union 44 ... injection cylinder 45 ... paper packaging container 46 ... cylindrical container 47 ... injection pipe 48 ... self-supporting packaging bag 49 ... spout 50 ... opening

Claims (3)

A spray sterilization apparatus that atomizes a bactericidal agent such as an aqueous hydrogen peroxide solution and attaches the bactericidal agent to a packaging material with air to sterilize,
A sterilizing agent storage control means for always storing an appropriate amount of the sterilizing agent in the atomizing storage tank; a sterilizing agent atomizing means provided in the atomizing storage tank and for atomizing the stored sterilizing agent;
Sterilization means for transporting the atomized disinfectant by air and attaching it to the packaging material;
A spray sterilization apparatus comprising:   The spray sterilization apparatus according to claim 1, wherein the sterilizing means is an ultrasonic generator.   The spray sterilization apparatus according to claim 1 or 2, wherein the sterilizing agent storage control means is a level sensor that senses the depth of the sterilizing agent stored in the atomization storage tank.

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