JP6757129B2 - Manufacturing method of positive pressure plastic bottled beverage and its manufacturing system - Google Patents

Description

The present invention relates to a method for producing a positive pressure plastic bottled beverage and a production system thereof.

Japanese Patent Application Laid-Open No. 2007-84112 (Patent Document 1) discloses a method for producing a positive pressure plastic bottled beverage having a slightly positive headspace and a production system thereof.

In the method for producing a positive pressure plastic bottled beverage and its production system described in Patent Document 1, a heat-sterilized beverage is allowed to flow down a thin film of a nitrogen gas dissolving device filled with nitrogen gas that has passed through a filter. , Nitrogen gas is dissolved in the beverage above the saturated solubility to produce a nitrogen persoluble beverage. The nitrogen persoluble beverage is filled in a PET bottle with a filler, and the PET bottled beverage is sealed with a cap by a capper to obtain a positive pressure PET bottled beverage.

JP-A-2007-84112

Beverages contain various components such as sugar and aroma components. As the content of the components contained in the beverage increases, the amount of gas that can be dissolved in the beverage decreases. Therefore, it is difficult to dissolve a sufficient amount of gas in the beverage to make the head space of the plastic bottle stable and positive pressure. Further, when the beverage is filled with gas under high pressure, there is a problem that the flavor of the beverage is impaired or the taste of the beverage is changed.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for producing a positive pressure plastic bottled beverage and a production system thereof, which can stably make the head space of a plastic bottle positive pressure. And.

The method for producing a positive pressure plastic bottled beverage based on the first aspect of the present invention is saturated at normal temperature and pressure by contacting a first liquid containing water as a main component with an enclosed gas in a pressurized atmosphere. The step of producing an enclosed gas solution in which the enclosed gas is dissolved above the solubility, and the enclosed gas-dissolved beverage by mixing the second solution containing an aroma component at a higher concentration than the first solution and the enclosed gas solution. It includes a step of generating water and a step of making the inside of the plastic bottle positive pressure by filling the plastic bottle with the enclosed gas-dissolved drinking water and sealing it.

In one embodiment of the present invention, the sugar content concentration in the first liquid is 5 wt% or less.
In one embodiment of the present invention, a heat-sterilized second liquid is used in the step of producing the enclosed gas-dissolved drinking water.

In one embodiment of the present invention, a first liquid that has been sterilized by non-heating by passing through a disinfection filter is used.

In one embodiment of the present invention, the degassed first solution is used in the step of producing the enclosed gas solution.

In one embodiment of the present invention, in the step of making the inside of the plastic bottle positive pressure, the filled gas-dissolved drinking water is filled in the plastic bottle at room temperature and sealed.

In one embodiment of the present invention, the method for producing a positive pressure plastic bottled beverage is based on the pressure of the pressurized atmosphere between the step of producing the enclosed gas-dissolved drinking water and the step of making the inside of the plastic bottle positive pressure. A step of temporarily storing the enclosed gas-dissolved drinking water is further provided in the header tank in which the internal pressure in a low constant range is maintained.

The production system for a positive pressure plastic bottled beverage based on the second aspect of the present invention is saturated at normal temperature and pressure by contacting a first liquid containing water as a main component with an enclosed gas in a pressurized atmosphere. A gas dissolving device that produces an enclosed gas solution in which the encapsulating gas is dissolved above the solubility, and a second solution that contains an aroma component at a higher concentration than the first solution and the encapsulating gas dissolved by the gas dissolving device. A blender that mixes liquids to generate enclosed gas-dissolved drinking water, and a beverage that creates a positive pressure inside the plastic bottle by filling the plastic bottle with the enclosed gas-dissolved drinking water generated by the blender and sealing it. It is equipped with a water filling device.

In one embodiment of the present invention, the positive pressure plastic bottled beverage manufacturing system is connected between the blender and the drinking water filling device, and a header tank that maintains an internal pressure in a certain range lower than the pressure of the pressurized atmosphere. Further prepare. The header tank temporarily stores the enclosed gas-dissolved drinking water generated by the blender.

In one embodiment of the present invention, the second liquid contains the aroma component at a concentration 10 times or more higher than that of the first liquid.

In one embodiment of the present invention, the enclosed gas is nitrogen gas.
In one embodiment of the present invention, the enclosed gas is carbon dioxide.

According to the present invention, the head space of a plastic bottle can be stably made into a positive pressure. In addition, it is possible to prevent the flavor of the beverage from being impaired and the taste of the beverage from being changed by filling the filled gas.

It is a system diagram which shows the structure of the manufacturing system of the positive pressure plastic bottled beverage which concerns on Embodiment 1 of this invention. It is a flowchart which shows the manufacturing method of the positive pressure plastic bottled beverage which concerns on Embodiment 1 of this invention. It is a system diagram which shows the structure of the manufacturing system of the positive pressure plastic bottled beverage which concerns on Embodiment 2 of this invention. It is a flowchart which shows the manufacturing method of the positive pressure plastic bottled beverage which concerns on Embodiment 2 of this invention.

Hereinafter, a method for producing a positive pressure plastic bottled beverage and a production system thereof according to each embodiment of the present invention will be described with reference to the drawings. In the following description of the embodiment, the same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

(Embodiment 1)
FIG. 1 is a system diagram showing a configuration of a positive pressure plastic bottled beverage manufacturing system according to the first embodiment of the present invention. FIG. 2 is a flowchart showing a method for producing a positive pressure plastic bottled beverage according to the first embodiment of the present invention.

As shown in FIG. 1, the positive pressure plastic bottled beverage manufacturing system 100 according to the first embodiment of the present invention brings nitrogen gas, which is an enclosed gas, into contact with the first liquid in a pressurized atmosphere at room temperature. A gas dissolution device 114 that produces a nitrogen solution, which is an enclosed gas solution in which nitrogen gas is dissolved above the saturated solubility at pressure, and a second solution and gas dissolution that contain an aroma component at a higher concentration than the first solution. The plastic bottle 10 is filled with a blender 130 that mixes the nitrogen-dissolved solution generated by the apparatus 114 to generate nitrogen-dissolved drinking water that is an enclosed gas-dissolved drinking water, and the nitrogen-dissolved drinking water generated by the blender 130. It is provided with a drinking water filling device 140 that makes the inside of the plastic bottle 10 positive pressure by sealing the gas.

In the present embodiment, the first liquid is water having a weight percent concentration of sugar contained in it of 5 wt% or less and a weight percent concentration of a component other than sugar such as an aroma component of 3 wt% or less. The second liquid is a concentrated stock solution of drinking water, contains aroma components and the like, and contains components constituting drinking water when mixed with the first liquid. Preferably, the second liquid contains the aroma component at a concentration 10 times or more higher than that of the first liquid.

The positive pressure plastic bottled beverage manufacturing system 100 includes a first liquid treatment system, a second liquid treatment system, and a nitrogen-dissolved drinking water treatment system. Each of the first liquid treatment system and the second liquid treatment system joins the nitrogen-dissolved drinking water treatment system.

First, in the positive pressure plastic bottled beverage manufacturing system 100, the processing system of the first liquid will be described. As shown in FIG. 1, the positive pressure plastic bottled beverage manufacturing system 100 includes a degassing device 110 for degassing the first liquid. In the degassing device 110, the dissolved gas is removed from the first liquid to generate a degassed liquid. For example, the concentration of dissolved oxygen gas in the degassed liquid is 4 ppm or less.

The degassing liquid generated by the degassing device 110 is sent to the aseptic tank 111. The degassed liquid temporarily stored in the aseptic tank 111 is pumped up by the metering pump 112 and sent to the gas melting device 114.

The positive pressure plastic bottled beverage manufacturing system 100 includes a sterilization filter 113 that sterilizes the first liquid without heating. The degassed liquid passes through the disinfection filter 113, is sterilized by non-heating, and then flows into the gas dissolving device 114.

The gas melting device 114 is connected to the nitrogen gas supply device 115. The nitrogen gas supply device 115 includes a filter. The nitrogen gas supply device 115 supplies the sterilized nitrogen gas that has passed through the filter into the gas dissolution device 114 in a state of being pressurized to a gauge pressure of, for example, 600 kPa. The gas melting device 114 has a container having high pressure resistance.

As shown in FIGS. 1 and 2, the gas dissolving device 114 produces a nitrogen dissolving solution in which nitrogen gas is dissolved above the saturated solubility at normal temperature and pressure by bringing the nitrogen gas and the degassing solution into contact with each other in a pressurized atmosphere. (S100).

The gas melting device 114 brings the nitrogen gas into contact with the degassed liquid at room temperature. As a result, a large amount of nitrogen gas can be dissolved in the degassing liquid while suppressing the occurrence of dew condensation in the gas melting device 114. In the present embodiment, the normal temperature means a normal temperature without heating and cooling, as described in Kojien. The nitrogen solution produced by the gas melting device 114 is sent to the blender 130.

Next, in the positive pressure plastic bottled beverage manufacturing system 100, the processing system of the second liquid will be described. The positive pressure plastic bottled beverage manufacturing system 100 includes a second liquid supply device 120 that supplies the second liquid. The second liquid contains an aroma component and a highly volatile base material that binds to the aroma component. Examples of the base material include medium-chain fatty acids such as propylene glyceride.

The positive pressure plastic bottled beverage manufacturing system 100 includes a heat sterilization unit 121 for heat sterilizing the second liquid. The second liquid passes through the heat sterilization unit 121, is heat sterilized, and then is sent to the aseptic tank 122. The second liquid temporarily stored in the aseptic tank 122 is pumped by the metering pump 123 and sent to the blender 130.

Next, in the positive pressure plastic bottled beverage manufacturing system 100, a treatment system for nitrogen-dissolved drinking water will be described. The volume ratio of the nitrogen solution to the second solution sent to the blender 130 as described above is, for example, 9: 1.

As shown in FIGS. 1 and 2, the blender 130 mixes the nitrogen-dissolved solution and the second solution to produce nitrogen-dissolved drinking water (S110). The nitrogen-dissolved drinking water produced by the blender 130 passes through the static mixer 131, is uniformly mixed, and then is sent to the header tank. The header tank includes an aseptic tank 132 and a pressure reducing valve 133 connected to the aseptic tank 132.

The pressure reducing valve 133 maintains the internal pressure of the aseptic tank 132 in a certain range lower than the pressure of the pressurized atmosphere in the gas melting device 114, for example, a gauge pressure of 15 kPa or more and 70 kPa or less. As shown in FIGS. 1 and 2, the aseptic tank 132 temporarily stores the nitrogen-dissolved drinking water produced by the blender 130 (S120).

The nitrogen-dissolved drinking water temporarily stored in the aseptic tank 132 is sent to the drinking water filling device 140 arranged in the clean booth maintained at high cleanliness. The drinking water filling device 140 covers and seals a plurality of fillers 141 that simultaneously fill a plurality of plastic bottles 10 with nitrogen-dissolved drinking water, and a plurality of plastic bottles 10 filled with nitrogen-dissolved drinking water with a cap 11. Includes cappers not shown.

The filler 141 fills the plastic bottle 10 with nitrogen-dissolved drinking water in a state of being separated from the plastic bottle 10. This makes it easier to maintain the cleanliness of the filler 141.

Nitrogen-dissolved drinking water is evenly delivered to each of the plurality of fillers 141 by the internal pressure of the aseptic tank 132 which has been depressurized and maintained within a certain range. By reducing the pressurizing pressure on the nitrogen-dissolved drinking water by the header tank, when the plastic bottle 10 is filled with the nitrogen-dissolved drinking water by the filler 141, the nitrogen-dissolved drinking water foams and nitrogen gas is rapidly released. Can be suppressed.

As shown in FIGS. 1 and 2, the drinking water filling device 140 fills the plastic bottle 10 with nitrogen-dissolved drinking water and seals the plastic bottle 10 to create a positive pressure inside the plastic bottle 10 (S130).

The mechanism is as follows. Nitrogen gas once dissolved in water is difficult to escape from water. For example, assuming that the amount of nitrogen gas dissolved in the degassed liquid by the gas dissolving device 114 is 100%, about 60% of the nitrogen gas is dissolved in the nitrogen-dissolved drinking water filled from the filler 141. There is.

Therefore, the release rate of nitrogen gas from the nitrogen-dissolved drinking water is gradual even after the plastic bottle 10 is filled with the nitrogen-dissolved drinking water by the filler 141 and the plastic bottle 10 is covered with the cap 11 by the capper.

As a result, the nitrogen-dissolved drinking water can be sealed in the plastic bottle 10 in a state where a sufficient amount of nitrogen gas is dissolved. Inside the plastic bottle 10 sealed by the cap 11, nitrogen gas released from the nitrogen-dissolved drinking water after sealing collects in the head space. As a result, the inside of the plastic bottle 10 can be stably made into a positive pressure.

As a result, it is possible to prevent oxygen and the like from entering the plastic bottle 10 for a long period of time. As a result, the best-by date of the plastic bottled beverage can be extended.

In the present embodiment, the drinking water filling device 140 fills the plastic bottle 10 with nitrogen-dissolved drinking water at room temperature and seals it. If the plastic bottle 10 is filled with nitrogen-dissolved drinking water at a low temperature of about 4 ° C., dew condensation will occur in the drinking water filling device 140, and it will be difficult to maintain the inside of the clean booth in an aseptic state. By filling the plastic bottle 10 with nitrogen-dissolved drinking water at room temperature, it becomes easier to maintain an aseptic state in the clean booth.

As described above, in the present embodiment, only the second liquid is sterilized by heating, and the first liquid is not heated. Therefore, the beverage manufacturing apparatus can be miniaturized and simplified. Depending on the type of the second liquid, non-heat sterilization using a sterilization filter is also possible instead of heat sterilization. In this case, the beverage manufacturing apparatus can be further miniaturized and simplified.

Further, in the present embodiment, nitrogen gas is dissolved in the first liquid. If nitrogen gas is dissolved in a beverage, the amount of nitrogen gas dissolved is reduced and the aroma component in the beverage is released together with the nitrogen gas. In this case, the flavor of the beverage is impaired and the taste of the beverage is changed. By dissolving the nitrogen gas in the first liquid having a low concentration of the aroma component, it is possible to reduce the released aroma component and suppress the deterioration of the flavor of the beverage and the change in the taste of the beverage. In order to obtain this effect in a stable manner, it is preferable that the first liquid contains the aroma component at a concentration of 1/10 or less as compared with the second liquid. More preferably, the first liquid contains the aroma component at a concentration of 1/1000 or less as compared with the second liquid.

Further, in the present embodiment, since the inside of the plastic bottle 10 can be stably made into a positive pressure, the variation in the internal pressure among the plurality of plastic bottles 10 can be reduced. As a result, the head space of the plastic bottle 10 can be reduced. As a result, the size and weight of the plastic bottle 10 can be reduced.

Hereinafter, a method for producing a positive pressure plastic bottled beverage and a production system thereof according to the second embodiment of the present invention will be described with reference to the drawings. The method for producing a positive pressure plastic bottled beverage and its production system according to the present embodiment are mainly the method for producing a positive pressure plastic bottled beverage and its production according to the first embodiment in that the enclosed gas is carbon dioxide gas. Different from the system. In the following description, the description will not be repeated with respect to the method for producing the positive pressure plastic bottled beverage according to the first embodiment and the configuration similar to the production system thereof.

(Embodiment 2)
FIG. 3 is a system diagram showing the configuration of a positive pressure plastic bottled beverage manufacturing system according to the second embodiment of the present invention. FIG. 4 is a flowchart showing a method for producing a positive pressure plastic bottled beverage according to the second embodiment of the present invention.

As shown in FIG. 3, the positive pressure plastic bottled water manufacturing system 200 according to the second embodiment of the present invention is at room temperature by bringing carbon dioxide gas, which is an enclosed gas, into contact with the first liquid in a pressurized atmosphere. Gas dissolution device 214 that produces carbon dioxide dissolution liquid, which is an enclosed gas dissolution liquid in which carbon dioxide gas is dissolved above the saturated solubility at pressure, and second liquid and gas dissolution that contain aroma components at a higher concentration than the first liquid. The plastic bottle 10 is filled with a blender 230 for producing carbon dioxide-dissolved drinking water, which is an enclosed gas-dissolved drinking water, and a carbon dioxide-dissolved drinking water produced by the blender 230, which are mixed with the carbon dioxide-dissolved solution generated by the apparatus 214. It is provided with a drinking water filling device 240 that makes the inside of the plastic bottle 10 positive pressure by sealing the plastic bottle 10.

The first liquid is water having a weight percent concentration of sugar contained in it of 5 wt% or less and a weight percent concentration of a component other than sugar such as an aroma component of 3 wt% or less. The second liquid is a concentrated stock solution of drinking water, contains aroma components and the like, and contains components constituting drinking water when mixed with the first liquid. Preferably, the second liquid contains the aroma component at a concentration 10 times or more higher than that of the first liquid.

The positive pressure plastic bottled beverage manufacturing system 200 has a first liquid treatment system, a second liquid treatment system, and a carbonated drinking water treatment system. Each of the treatment system of the first liquid and the treatment system of the second liquid joins the treatment system of carbonated drinking water.

First, in the positive pressure plastic bottled beverage manufacturing system 200, the processing system of the first liquid will be described. As shown in FIG. 3, the positive pressure plastic bottled beverage manufacturing system 200 includes a degassing device 210 for degassing the first liquid. In the degassing device 210, the dissolved gas is removed from the first liquid to generate a degassed liquid. For example, the concentration of dissolved oxygen gas in the degassed liquid is 4 ppm or less.

The degassing liquid generated by the degassing device 210 is sent to the aseptic tank 211. The degassed liquid temporarily stored in the aseptic tank 211 is pumped up by the metering pump 212 and sent to the gas melting device 214.

The positive pressure plastic bottled beverage manufacturing system 200 includes a sterilization filter 213 that sterilizes the first liquid without heating. The degassed liquid passes through the disinfection filter 213, is sterilized by non-heating, and then flows into the gas dissolving device 214.

The gas melting device 214 is connected to the carbon dioxide gas supply device 215. The carbon dioxide gas supply device 215 includes a filter. The carbon dioxide gas supply device 215 supplies the sterilized carbon dioxide gas that has passed through the filter into the gas dissolution device 214 in a state of being pressurized to a gauge pressure of, for example, 600 kPa. The gas melting device 214 has a container having high pressure resistance.

As shown in FIGS. 3 and 4, the gas dissolving device 214 produces a carbon dioxide dissolving solution in which carbon dioxide gas is dissolved more than the saturated solubility at normal temperature and pressure by bringing the carbon dioxide gas and the degassing solution into contact with each other in a pressurized atmosphere. (S200).

The gas melting device 214 brings the carbon dioxide gas into contact with the degassed liquid at room temperature. As a result, a large amount of carbon dioxide gas can be dissolved in the degassing liquid while suppressing the occurrence of dew condensation in the gas melting device 214. In the present embodiment, the normal temperature means a normal temperature without heating and cooling, as described in Kojien. The carbonic acid dissolution liquid produced by the gas dissolution device 214 is sent to the blender 230.

Next, in the positive pressure plastic bottled beverage manufacturing system 200, the processing system of the second liquid will be described. The positive pressure plastic bottled beverage manufacturing system 200 includes a second liquid supply device 220 that supplies the second liquid. The second liquid contains an aroma component and a highly volatile base material that binds to the aroma component. Examples of the base material include medium-chain fatty acids such as propylene glyceride.

The positive pressure plastic bottled beverage manufacturing system 200 includes a heat sterilization unit 221 for heat sterilizing the second liquid. The second liquid passes through the heat sterilization unit 221 and is heat sterilized, and then sent to the aseptic tank 222. The second liquid temporarily stored in the aseptic tank 222 is pumped up by the metering pump 223 and sent to the blender 230.

Next, in the positive pressure plastic bottled beverage manufacturing system 200, a treatment system for carbonated drinking water will be described. The volume ratio of the carbonated solution and the second solution sent to the blender 230 as described above is, for example, 4: 1.

As shown in FIGS. 3 and 4, the blender 230 mixes the carbonated solution and the second solution to produce carbonated drinking water (S210). The carbonated drinking water produced by the blender 230 passes through the static mixer 231 and is uniformly mixed, and then sent to the header tank. The header tank includes an aseptic tank 232 and a pressure reducing valve 233 connected to the aseptic tank 232.

The pressure reducing valve 233 adjusts the internal pressure of the aseptic tank 232 to, for example, a gauge pressure of 300 kPa to 600 kPa or more. This pressure is finally determined by the pressure that fills the plastic bottle 10. As shown in FIGS. 3 and 4, the aseptic tank 232 temporarily stores the carbonated drinking water produced by the blender 230 (S220).

The carbonated drinking water temporarily stored in the aseptic tank 232 is sent to the drinking water filling device 240 arranged in the clean booth maintained in high cleanliness. The drinking water filling device 240 covers and seals a plurality of fillers 241 that simultaneously fill a plurality of plastic bottles 10 with carbonic acid-dissolved drinking water, and a plurality of plastic bottles 10 filled with carbonic acid-dissolved drinking water with a cap 11. Includes cappers not shown.

The filler 241 fills the plastic bottle 10 with carbonated drinking water in a state of being in contact with the plastic bottle 10.

Carbonated drinking water is evenly delivered to each of the plurality of fillers 241 by the internal pressure of the aseptic tank 232 maintained within a certain range.

As shown in FIGS. 3 and 4, the drinking water filling device 240 fills the plastic bottle 10 with carbonated drinking water and seals the plastic bottle 10 to create a positive pressure inside the plastic bottle 10 (S230).

Carbon dioxide gas once dissolved in water is difficult to escape from water. Therefore, even after the plastic bottle 10 is filled with the carbon dioxide-dissolved drinking water by the filler 241 and the plastic bottle 10 is covered with the cap 11 by the capper, the release rate of carbon dioxide gas from the carbon dioxide-dissolved drinking water is slow.

In the present embodiment, carbon dioxide gas is dissolved in the first liquid under high pressure, and the second liquid containing a higher concentration of aroma components than the first liquid is not placed under high pressure until it is mixed with the first liquid. As a result, it is possible to suppress adverse effects on the aroma component and the like in the second liquid, and it is possible to prevent the flavor of the carbonated beverage from being impaired and the taste of the carbonated beverage from being changed. As a result, it becomes possible to produce a high-quality carbon dioxide gas beverage. In order to obtain this effect in a stable manner, it is preferable that the first liquid contains the aroma component at a concentration of 1/10 or less as compared with the second liquid. More preferably, the first liquid contains the aroma component at a concentration of 1/1000 or less as compared with the second liquid.

It should be noted that the above-described embodiment disclosed this time is an example in all respects and does not serve as a basis for a limited interpretation. Therefore, the technical scope of the present invention is not construed solely by the above-described embodiments, but is defined based on the description of the claims. It also includes all changes within the meaning and scope of the claims.

10 plastic bottles, 11 caps, 100,200 positive pressure plastic bottled beverage manufacturing system, 110,210 deaerator, 111,122,132,211,222,232 aseptic tank, 112,123,212,223 metering pump , 113,213 Disinfection filter, 114,214 gas dissolution device, 115 nitrogen gas supply device, 120,220 second liquid supply device, 121,221 heat sterilization unit, 130,230 blender, 131,231 static mixer, 133, 233 pressure reducing valve, 140,240 drinking water filling device, 141,241 filler, 215 carbon dioxide gas supply device.

Claims (16)

In a pressurized atmosphere, a step of producing an enclosed gas-dissolved solution in which the enclosed gas is dissolved above the saturated solubility at normal temperature and pressure by contacting the first solution containing water as a main component with the enclosed gas.
A step of mixing the second liquid containing an aroma component at a higher concentration than the first liquid and the enclosed gas-dissolved liquid to generate an enclosed gas-dissolved drinking water.
The plastic bottle is filled with the enclosed gas-dissolved drinking water and sealed to provide a positive pressure inside the plastic bottle .
In the step of producing the enclosed gas-dissolved drinking water, the second liquid is not placed in the pressurized atmosphere for dissolving the enclosed gas in the first liquid until it is mixed with the enclosed gas-dissolved liquid . How to make positive pressure plastic bottled beverages. The method for producing a positive pressure plastic bottled beverage according to claim 1, wherein the second liquid contains the aroma component at a concentration 10 times or more higher than that of the first liquid. The method for producing a positive pressure plastic bottled beverage according to claim 1 or 2, wherein in the first liquid, the sugar content concentration is 5 wt% or less. The method for producing a positive pressure plastic bottled beverage according to any one of claims 1 to 3, wherein the second liquid sterilized by heating is used in the step of producing the enclosed gas-dissolved drinking water. The positive pressure plastic bottle according to any one of claims 1 to 4, wherein the first liquid that has been sterilized by non-heating by being passed through a sterilization filter is used in the step of producing the enclosed gas solution. Beverage manufacturing method. The method for producing a positive pressure plastic bottled beverage according to any one of claims 1 to 5, wherein the degassed first liquid is used in the step of producing the enclosed gas solution. The positive pressure plastic bottle according to any one of claims 1 to 6, wherein in the step of making the inside of the plastic bottle positive pressure, the filled gas-dissolved drinking water is filled in the plastic bottle and sealed at room temperature. Beverage manufacturing method. The method for producing a positive pressure plastic bottled beverage according to any one of claims 1 to 7, wherein the enclosed gas is nitrogen gas. The sealed gas is dissolved in a header tank in which an internal pressure in a certain range lower than the pressure of the pressurized atmosphere is maintained between the step of generating the filled gas-dissolved drinking water and the step of making the inside of the plastic bottle positive. The method for producing a positive pressure plastic bottled beverage according to claim 8, further comprising a step of temporarily storing drinking water. The method for producing a positive pressure plastic bottled beverage according to any one of claims 1 to 7, wherein the enclosed gas is carbon dioxide. In a pressurized atmosphere, a gas-dissolving device that produces an enclosed gas solution in which the enclosed gas is dissolved above the saturated solubility at normal temperature and pressure by bringing the first solution containing water as the main component into contact with the enclosed gas.
A blender that produces enclosed gas-dissolved drinking water by mixing a second solution containing an aroma component at a higher concentration than the first solution and the enclosed gas-dissolving solution generated by the gas-dissolving device.
The plastic bottle is filled with the enclosed gas-dissolved drinking water generated by the blender and sealed to provide a drinking water filling device that creates a positive pressure inside the plastic bottle .
In the blender, the production of a positive pressure plastic bottled beverage in which the second liquid is not placed in a pressurized atmosphere for dissolving the filled gas in the first liquid until it is mixed with the filled gas dissolving liquid. system. The positive pressure plastic bottled beverage manufacturing system according to claim 11, wherein the second liquid contains the aroma component at a concentration 10 times or more higher than that of the first liquid. The positive pressure plastic bottled beverage manufacturing system according to claim 11 or 12, wherein the enclosed gas is nitrogen gas. Further provided is a header tank that is connected between the blender and the drinking water filling device and maintains a certain range of internal pressure lower than the pressure of the pressurized atmosphere.
The positive pressure plastic bottled beverage manufacturing system according to claim 13, wherein the header tank temporarily stores the enclosed gas-dissolved drinking water generated by the blender. The positive pressure plastic bottled beverage manufacturing system according to claim 11 or 12, wherein the enclosed gas is carbon dioxide. The positive pressure plastic bottled beverage manufacturing system according to any one of claims 11 to 15, wherein the drinking water filling device fills the plastic bottle with the enclosed gas-dissolved drinking water at room temperature and seals the bottle.

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