JPS59152194A - Method of filling non-carbonated drink - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] Technical Field The present invention relates to fruit juice, coffee, wine, cocoa, lactic acid drinks,
The present invention relates to a method for filling non-carbonated beverages such as black tea, Japanese sake, soup, tea, barley tea, sports drinks, etc., so-called non-gas beverages, into soft cans such as aluminum cans.

Prior Art In general, flexible cans, typically aluminum DI cans, have a significantly reduced can size compared to steel cans, and can also be stacked with two-piece cans.

Steel is used for carbonated beverages containing a large amount of carbon dioxide such as beer and cider because it is easy to perform neck-in processing and has high recovery and recycling efficiency, and can also be expected to improve product quality. It is often used in place of tin cans. However, when these soft cans such as aluminum cans are filled with carbonated drinks, the partial pressure of carbon dioxide gas contained in large amounts in these drinks causes the pressure inside the can after filling and sealing to rise even at the cooling temperature for drinking. The partial pressure of this carbon dioxide gas is able to maintain the shape of the can against atmospheric pressure, but when used as a container for non-carbonated beverages, the partial pressure of carbon dioxide gas is As this could not be expected, the pressure inside the can clearly dropped below atmospheric pressure as it cooled down after filling and seaming, exposing the weak points of soft cans such as aluminum cans, which have low pressure resistance, and making it impossible to maintain the shape of the can. This has the disadvantage that it easily deforms due to manual pressure when gripped. Therefore, although aluminum cans and the like in particular have various advantages, they are not yet commonly used as containers for non-carbonated beverages.

In response to this, there have been some attempts to fill non-carbonated beverages into soft cans such as aluminum cans. In these attempts, for example, after sterilizing and heating a prepared non-carbonated beverage at a temperature of around 95C, the beverage is cooled to 5C or less, and at this cooled humidity, N
, gas is dissolved, filled and seamed, and then 607? There is a method of reheating to sterilize mold and bacteria (
JP-A-56-7Z67S). However, in this invention, the gas must be dissolved in the beverage and the beverage must be filled into cans at an extremely low filling temperature of 5C or less, and furthermore, it must be reheated for sterilization after filling and sealing. Also, it is not practical in terms of energy saving due to large losses.

In addition, a method has been proposed in which liquefied 5-N2 is dropped into a can filled with a beverage before sealing, and N and gas are sprayed to seal the can (Japanese Unexamined Patent Publication No. 56-4521@publication).
However, in this invention, liquefaction N! It is difficult to control the
It has not been implemented industrially in this technical field.

Furthermore, some of the inventors of the present invention have previously proposed a filling method in which a mixed gas containing a very small amount of CQ and gas is dissolved together with N and gas (Japanese Unexamined Patent Publication No. 52-99183).
. However, in this invention, by simply using N as the gas to be dissolved in the beverage, and a mixed gas containing a small amount of CO and gas, the pressure inside the can is increased by utilizing the partial pressure caused by the CO and gas contained in this amount. This method is no more than an idea based on speculation that deformation of the can body can be prevented even under atmospheric pressure, and this method does not depend on the specific filling conditions, such as the filling temperature, the CO1 ratio in the mixed gas, or The pressure applied during dissolution of the mixed gas is completely unknown and has not yet been implemented industrially.

6- Purpose of the Invention The present invention has been developed based on the above-mentioned current situation, and when filling non-carbonated beverages into soft cans such as aluminum cans, the present invention is to solve the following problems: To provide purposeful conditions and a method for filling cans that can deeply maintain the shape of a can body after seaming by dissolving and filling a trace amount of CO2 gas that falls within the taste threshold that falls within the range of 1 fl = beverages. With the goal.

Another object of the present invention is to provide a method that enables higher temperature filling, thereby reducing heat loss as much as possible during the heat sterilization process, the filling and sealing process, and the subsequent post-sterilization process, thereby saving energy. There is a particular thing.

Another object of the present invention is to provide a method in which conventional carbonated beverage filling machines and filling lines can be used as they are without the need for special equipment. The goal is to standardize carbonated beverage filling lines and cans.

Structure The purpose or problem of the present invention is to add N, gas, and CO to a non-carbonated beverage that has been sterilized by heating after preparation.
After dissolving the gas under pressure in an amount that is less than 15/10000 by weight of the beverage, when filling this beverage into soft cans,
The can internal pressure after filling and seaming is plotted on a coordinate axis with the can internal pressure and temperature as the axes, and the can internal pressure is equal to or higher than the temperature curve passing through a point of 1.1 atm or higher at 5°C, and post-sterilization is not performed. At the heating temperature, the can pressure-temperature curve range is set below the can pressure-temperature curve passing through the 8 atmO point, and the ratio of CO7 to N2 dissolved in the beverage before filling and the ratio of these gases to the beverage are determined. Pressure force during dissolution into 8 atm
The can internal pressure after filling and seaming is plotted on the above coordinates by changing the can internal pressure with the upper limit of Fill at a temperature of
The blowing of an inert gas containing a gas onto the raised surface is achieved by replacing the head space area with the gas and then tightening it.

Further, in the present invention, in the above-mentioned filling method, the filling temperature is in the range of 20 to 81C1, preferably 50 to 65C, and optimally 60iC.

Description of structure In the present invention, the objects to be filled are non-carbonated beverages such as fruit juice, -x-heat, K tea, cocoa, lactic acid drinks, wine, sake, soup, tea, barley tea, and sports drinks, so-called non-gas beverages. It's a drink. These non-carbonated beverages are then filled into soft cans, typically aluminum cans.

An example of carrying out the present invention will be described below based on the attached schematic process diagrams.

In Figure 1, non-carbonated beverages such as fruit juice are represented by dealator-1.
For example, in the case of fruit juice, it is usually 80 to 95
After being heat sterilized at a humidity range of about tT, it is sent to the saturator 4.

On the other hand, when the CO, gas and N gas supplied from the CO generator 5 and the N8 generator 6 are supplied as a mixed gas, their temperature and amount are adjusted by valves 7 and 8 and a heating tank, respectively. The mixed gas is mixed at a predetermined ratio by a mixer 9, and the mixed gas is loaded with a predetermined pressure by an automatic pressure control valve 10 and sent to the saturator 4. Also CO
! When gas, N, and gas are supplied separately, each gas is loaded with a predetermined pressure and sent to the saturator 4. In this case, the gas may be supplied into an appropriate flow path upstream of the saturator 4.

A beverage in which CO, gas, and N gas are dissolved under pressure is passed from a saturator 4 to a surge tank 13, and is filled in a filling machine 11 while maintaining the pressure applied during dissolution. After filling, a gas mixture of N, gas, or an inert gas containing CO2 is blown onto the upper surface of the can filled with beverages until the can is opened to the atmosphere and the top lid is tightened by the sealing machine 12. The upper headspace region will be replaced by air by these gases,
Thereafter, the can lid is wound i4+W by the seaming machine 12. The gas sprayed onto the top of the can is N.

The gas may be used alone, or an inert gas containing CO2 gas may be used.

In the present invention, filling is performed through the steps described above, but the beverage targeted for filling in the present invention is a non-carbonated beverage, and therefore, the value of CO2 gas dissolved under pressure in the beverage naturally has a certain value. There is a limit. In the present invention, the upper limit of the amount of CO and gas dissolved in the beverage under pressure is set at tl, which falls within the category of non-carbonated beverages in terms of taste, that is, the weight ratio of the beverage is 15/10,000. Preferably a weight ratio of 5
/10000 or less.

In addition, it limits the pressure inside the can after filling and sealing the beverage in which CO2 gas, N, and gas are dissolved, and is particularly suitable for soft cans that are the weakest in terms of strength and highly practical among the soft cans targeted by the present invention. An aluminum DI can (can body thickness O, 14 m, bottom plate thickness 0.42 m), which is often used as a can for carbonated beverages, was used as a filling container, and was used as a standard for determining the presence or absence of can deformation. In other words, this is based on the premise that if conditions are set so that such aluminum DI cans do not cause can deformation, can deformation will naturally not occur when ordinary soft cans other than aluminum DI cans are used. This is what we have been considering. However, in the aluminum DI can as mentioned above,
The internal pressure of the aluminum DI can is determined at the temperature at which the aluminum DI can is post-sterilized by a sterilizer or the like after filling and sealing, for example at the heating temperature determined by the filled beverage, such as 60C1 coffee in the case of fruit juice or tzoc in the case of coffee. When the can is cooled to a temperature below 8 atm, which is the limit of the pressure resistance of the can, and to a low temperature of about 5C, which is suitable for drinking, the pressure inside the can resists atmospheric pressure and maintains its phase shape, allowing it to be used with finger pressure, etc. It is necessary to maintain a pressure that does not cause deformation even when the cylinder is heated, that is, an internal pressure of 1.1 atm or more, preferably 1.4 atm or more at 5C.

Now, if we calculate and plot the can internal pressure at each temperature on the coordinates with the axes of internal equilibrium pressure and temperature after filling and seaming, we can see that the can internal pressure shows the pressure upper limit line as shown in Figure 2. Temperature mA (when retort sterilized at post-sterilization humidity of 120C) and can internal pressure temperature iB indicating the lower pressure limit line
will be drawn. Naori curve is 1.4 at 5C
It is a can internal pressure-temperature curve passing through the point atm.

An example of calculating each plot when creating each pressure upper limit line and pressure lower limit line will be shown. The prerequisite is that the head space is 27.0 ml for an aluminum can with a beverage filling volume of 500 ml.
8 ml, C02# degree in the drink is 5/1000 by weight
0 or less, there is no chemical change inside the can after filling the beverage, the can body shall not expand or contract due to changes in internal pressure, cans containing inert gas containing N2 gas or CO2 gas after filling and before seaming. Residual air @ 20C by blowing onto the top surface 3. Oml and the N and gas in this are added as N2 gas, and the volume is 81 of air! IJ, and 0. It was assumed that the dissolution into the beverage was ignored, and that the pressurized dissolved gas would not be released into the atmosphere even if it was opened to the atmosphere between the filling process and the seaming process.

A calculation example for calculating the in-can pressure upper limit line and the pressure lower limit line based on such a premise is shown below.

* Various factors necessary for calculation (500 prayers at filling amount 20C,
The empty space is 27.8 ml, and 3 ml of air is mixed in. )1-1
Volume change due to temperature 1-2 Bunsen at each humidity
Absorption coefficient, water vapor pressure, residual air 02 partial pressure inside the can 02 partial pressure calculation example (20C) ■
Calculation example of the pressure lower limit line The pressure lower limit line indicates the relationship between the humidity and the can internal pressure immediately after filling and seaming, which can maintain the shape of the can due to the internal pressure when the can is cooled to 5C. . Find the lower limit line that can maintain 4 atm or higher. In addition, the C02 content is heavy rat ratio 5/
10000, the gas Vol/Vol
(OC.

15-1 atm conversion value) = 0.2545 Vol/Vol ■-■ Next, calculate the gas situation in the can of 5 C, 1,4 atm.

■CO, partial pressure of gas From Henry's law, 0.254fi 1.424 = 0.179 atm @N, partial pressure of gas N, gas partial pressure = pressure inside the tank - (co, 10 water vapor, 10,) partial pressure = 1.4-(0,179+0.006+0.020
) = 1.195 atm 16-0 N in the can, total it (OC + 1 atm conversion) N in the can, total amount = amount dissolved in liquid N2m1 = 45.558
rub ■−■ Calculate the gas situation inside the can when it becomes OC while the can is sealed.

■Partial pressure of CO, gas Similarly = 0.148 atm @Partial pressure of gas = 1.450 atm ■-Calculation of total amount of CO (OC, 1 atm conversion) Co
, Total amount of gas = Dissolved amount in liquid + Empty size Gas device 17- (CO, gas partial pressure) = 134.775rne ■-■ Change in gas pressure inside the can due to temperature change Next, an example of calculating the inside pressure in the can at 600. show. In addition, the internal pressure can be calculated in the same manner as in the case of 60C below by changing the temperature, and by connecting these plots, 5c.

A pressure lower limit line B passing through 1 and 4 atm f is obtained.

■ CO, partial pressure 60C If partial pressure of COt is q-eo, then CO, g inside the can
is 134.775mA', so g(!09 =
0.664 atm ON! Partial pressure 60 CN
Since it is 558m#, 18-? N2-1゜991 atm 0 Can internal pressure 60C Can internal pressure - = 0.664 + 1.991 + 0.197
+0.032=2.88 atm ■ Pressure upper limit line According to the present invention, since heat-sterilized non-carbonated beverages are used, post-sterilization for fruit juices generally requires only 60C;
When filling at 0 tl', no post-sterilization step is required. But as in the case of coffee tzot
For those that perform l' (retort) sterilization, 120C
The pressure inside the can due to the temperature change in each case is calculated using the same method as for the pressure lower limit line described above, and the inside pressure-humidity curve A obtained by connecting these plots is obtained.

Therefore, during filling, other filling conditions must be set so as to fit within the area between these curves and 8 curves. Temperature must be set.

In particular, in the present invention, CO for N in the above-mentioned beverage
1 ratio and the pressure applied during melting are also changed, and plotted on the same coordinates as the above-mentioned pressure line between the internal pressure and temperature after filling and seaming, and the CO7 ratio and pressure are used as parameters. One of its major features is the ability to determine and display the pressure/humidity curve.

Since the pressurizing force when dissolving gas in the beverage is directly applied to the can during filling, the upper limit is set at 8 atm from the viewpoint of can strength as described above (C curve described below).
, a practical value that is a pressure lower than that (C′ to C″ described later)
′ curve), find the pressure-temperature curve for each.

Note that the N, gas, and CO gas dissolved under pressure in the beverage before filling can also be released to the atmosphere between the filling process and the seaming process in the flow sheet shown in Figure 1 as described above. The present inventors have obtained the surprising finding that by blowing gas or an inert gas containing CO or gas onto the top of the can and converting the head space area to IFL, it is difficult for the inert gas to escape from the beverage. Co, gas, and N gas dissolved in the beverage before filling and sealing can be dissolved in the beverage almost unchanged even after filling and sealing.

Therefore, we calculated the partial pressure derived from the amount of CO□ gas and N dissolved under pressure, and the amount of N in the empty space inside the can after filling and sealing.
1. The sum of water vapor and O7 partial pressures was calculated using the following method.

Calculation example of can internal pressure after filling and seaming As shown in the previous section, the can internal pressure after filling and seaming must be above the lower pressure limit line and below the upper pressure line depending on the temperature at that time.

On the other hand, as mentioned above, the filling pressure of the filling machine is almost equal to the pressure applied when the gas is dissolved, and therefore the pressure applied when the gas is dissolved,
In other words, the filling pressure is limited by the internal pressure resistance of the can body, so the upper limit is set at 8 atm, and further 7 atm.
-s 6 atm, 5 atm.

Calculations were made for 4 atm and 3 atm, respectively.

21- Also, once the can leaves the filling machine, it is exposed to the atmosphere and then enters the seaming machine, where it is sprayed with N2 gas.
The empty space has a N gas atmosphere. However, it is assumed that this space-time portion contains 3 rnl of residual air.

■ When the filling temperature is 60C ■ Calculate the gas concentration of CO in the gas phase of the -1 saturator Total of the CO in the can above! 134.775TLl When the CO and gas concentration at the time of pressurized dissolution is set to X, the following is obtained from Henry's law.

■-1-1 Gas dissolution pressure 8 atm 134.775=507.6X0.365X8Xxx=
0.091 ■-1-2 Gas dissolution pressure 7 atm 134.775=507.6X0.365X7Xxx=
0.104 22- ■-1-3 Following step 1, 6 atm...”...x = 0
．． l 21 z5 atm song・-x=0.146.
4a jm...""x= 0.182.3atm...
...x=Q, 243.

■-2 The amount of N2 gas under each dissolving pressure is the amount of N2 gas under each pressure. it, the amount of N in the empty space, and the N in the entrained air were all calculated and summed up as follows.

■-2-1 Pressure during melting 8atm5o7. c+
xo, olozxsx (t-0,091)+(21,6
-3)Xdan33 + (axo, s)
33 ■-2-2 Pressure force during melting 7 atm507.6X
0.0102X7X(1-0,104)+(21,6-
a) x no l 33 10 (3 cuts 8) x band = 49.6 s 9 mg■-2
-3 Pressure force during melting 6 atm 507.6X0.0102X6X (1-0,121)±
(21,6-3) X stop 33 + (3X0.8)
〜6 Similarly, the pressure during melting was 5 atms4 atm, 3
For ATM, it is 39.324m1134-1 respectively.
” 7 ml x 28.974 ml.

■-3 Calculation of CO and gas partial pressure in the can Since the volume of Co1 in the can (mlz OCS1 atm conversion value) is 134.775- as shown in ■-1, the CO and gas partial pressure Tc in the can can be calculated from the following formula. Seek.

73 134.775=507.6X0.365ytc+2
73+6°N21.6X%g-c = 0.664 a
tm ■-4 N in the can, Gas partial pressure calculation Volume of N in the can ("% O0% 1 ATM conversion value)
is as shown in ω-2, so N in the can.

Gas partial pressure? When N is set, the following formula holds true.

■-4-1 Pressure force during melting 8 atm73 54J367=507.6X0.0102-ton+2□
3+. X21.6FfN= 2.398 atm ■-4-2 Pressure during melting 7 atm73 49.689=507.6X0.0102i-N-2,
3+6oX 21.65. /N common = 2.171 at
m ■-4-3~6 Similarly, apply pressure during melting is 6 atm, 5 atm s
9H in case of 4 atm z 3 atm is 1.945 atm, 1.718 atms 1.492 respectively
ATMS1.266 ATM.

■-5 Calculation of the total pressure inside the can The total pressure inside the can is ([■-3...CO, partial pressure] ten [■-4.
... Current partial pressure) + (H, O partial pressure] 10 [02 partial pressure]), so if the filling humidity is 60C, the total equilibrium pressure in the can immediately after filling and seaming under each melting pressure is as follows: and is plotted in the figure (Figure 2).

(Left below) 25- [' ■ In the same way as when the filling temperature was 60C, calculate the pressure inside the can after filling and sealing by changing the value of the pressurizing force during melting at each filling temperature, and convert these values into the above coordinates. By plotting and connecting these plots, we can obtain C, C', C', C'', ・
...A curve is obtained.

■ CO in gas! Calculation of the pressure-temperature curve of the ratio Also, horse gas and CO dissolved under pressure in the beverage, gas co,
The can internal pressure and temperature curve after filling and seaming was calculated from the filling pressure and filling temperature when the ratio was kept constant. The calculation was carried out in accordance with the case of the CO1 ratio of gas 26- to the melting pressure at the filling temperature of 60C in the previous section.

On the other hand, the can internal pressure was measured by filling and sealing under various conditions on a carbonated beverage filling line, and it was confirmed that the above-mentioned theoretical estimated value was practically applicable.

As a result, the relationship between the equilibrium pressure inside the can after filling and seaming and the conditions necessary for filling (filling temperature, gas CO, gas ratio, pressurized gas dissolution pressure) can be clearly shown in a practical manner. The diagram was completed.

Thus, the diagram shown in Figure 2 (hereinafter referred to as KH)
(referred to as a line diagram) will be created. A second like this
In the KH diagram shown in the figure, once the soft can material, dimensions, associated can strength, capacity, head space capacity, etc. are set, each KH diagram can be created corresponding to each setting condition in the same way as above. Created.

In the KH diagram in Fig. 2, if filling is carried out under the conditions surrounded by the upper limit line A of can pressure, the lower limit line B1 of can internal pressure, and the internal pressure of melting pressure of 8 atm and temperature curve C. The pressure inside the can after filling and sealing is within a predetermined range that does not cause double deformation, making it possible to fill the soft can with non-carbonated beverages.

For example, when the filling temperature is primarily regulated, the appropriate conditions for actual filling using FIG. 2 are to extend the specific temperature point in FIG. The allowable range of the melting pressure is determined between the lower line and the curve 1llilB, and by selecting a melting pressure within this range, the gas flow at the intersection of the melting pressure and the temperature is determined. A CO1 ratio is determined. Alternatively, the song mh at the specific set filling temperature
Or between the curves C and B, the gas CO
An allowable range of seven ratios is determined, and by selecting any CQ and ratio within this range, the melting pressure can be determined. These filling temperature, melting pressure and C
O.

The ratio can be based on either.

As is clear from the above-mentioned K)I diagram, the filling temperature can be selected over a wide range of temperatures from 20 to 81C, for example, for a 500 mA aluminum can, which is the prerequisite in Fig. 2. Therefore, when filling with fruit juice, the post-sterilization step can be omitted by setting the filling temperature to 60C or higher, which is an effect that has never been thought of in the past. By creating such a KH diagram in advance, each filling condition can be purposefully obtained.
Furthermore, it has been confirmed and realized for the first time by the present invention that filling at a higher temperature than in the conventional method is possible, and the melting pressure and CO□ ratio during high-temperature filling are also improved.
This can be determined quite easily from the J diagram.

Effects According to the present invention as described above, each KH diagram is created by determining the filling beverage, the material of the can, its dimensions, capacity, etc., and the purpose conditions for filling are determined by this KH diagram. It is easy to determine, in particular enables high-temperature filling, is extremely useful in terms of energy saving, and can be used in conventional filling lines for soft cans for carbonated beverages or for filling hard cans such as steel 29- cans for non-carbonated beverages. By using the device as is or with slight modifications, it is not only possible to fill soft cans with non-carbonated beverages, but it is also possible to fill both carbonated and non-carbonated beverages into the same soft can, such as an aluminum DI can. This means that the cans can be unified, which also results in energy savings.

EXAMPLE 10% fruit juice was filled into an aluminum sOOml DI can with a can body thickness Q of 14 mm and a bottom plate thickness of 0.42 mm using the apparatus shown in FIG. 1 according to the steps shown. In the KH diagram under these preconditions, that is, Fig. 2, the filling temperature is set to 600, and the dissolution pressure of the mixed gas at that time is 6 atm, and therefore the CO in the mixed gas,
12% gas (CO in beverages, gas is 5/100 by weight)
00), and then N and gas were sprayed onto the top surface of the can while it was open to the atmosphere, and then the can was sealed. After the can was filled and sealed, the can was cooled to a temperature of 50°C, but no deformation of the can occurred even when finger pressure was applied.

30- In addition, N2 gas and CO were added in exactly the same manner as above.

Similar results were obtained when the gas was separately supplied to the saturator and dissolved under pressure.

[Brief explanation of drawings]

FIG. 1 is a schematic process explanatory diagram for carrying out the present invention. FIG. 2 is a diagram showing the relationship between can pressure and temperature when various conditions are changed. 1... Dealator - 2... Preparation tank 3... Heat exchanger 4... Saturator - 5... CO, generator 6... N6 generator. 7.8... Valve 9... Mixer 10...
Automatic pressure control valve 11...Filling machine 12...Sealing machine 13...Surge tank 31- Procedural amendment (voluntary) April 11, 1981 1, Indication of case 1982 Patent Application No. No. 19157 No. 2, Title of Invention Method for filling non-carbonated beverages 3-7-1 Kyobashi, Chuo-ku, Tokyo (005) Asahi Beer Co., Ltd. (1 other person) Representative Tsutomu Murai 4, Agent 5, Subject of amendment Column 6 of "Claims" and "Detailed Description of the Invention" of the specification, contents of amendment (1) The claims are amended as shown in the attached sheet. (2) "Sports drink" on page 3, line 17 and page 9, line 11 is corrected to "sports drink, mineral water." 7. List of Attached Documents (1) Attachment 1 Attachment Paper Claim 1: N2 gas and CO2 gas are added to a non-carbonated beverage that has been heat sterilized after preparation, and the amount of gas is 15/1 by weight of the beverage.
After dissolving under pressure in an amount of 0,000 or less, when filling this beverage into a soft can, the pressure inside the can after filling and sealing is plotted on a coordinate axis with the inside pressure and temperature at 5°C. The can internal pressure is higher than the temperature curve passing through the point of 1, 1 atm or higher, and the can internal pressure is 8 a at the post-sterilization heating temperature.
Set the can internal pressure-temperature curve range below the can internal pressure-temperature curve passing through the point tm, and set the CO□ ratio to N2 dissolved in the beverage before filling and the pressurizing force when these gases are dissolved in the beverage to 8. The can internal pressure after filling and seaming is plotted on the above coordinates by varying the ATM as the upper limit, and the COt ratio and melting pressure that fall within the range of the can internal pressure-temperature curve at each filling temperature are selected in advance, and each of these is determined by Fill at the filling temperature and use N2 gas or CO after filling until the seaming process.
A method for filling a non-carbonated beverage, which comprises spraying an inert gas containing two gases onto the top surface of the can, replacing the head space area with the gas, and then sealing the can. 2. The method according to claim 1, wherein the non-carbonated beverage is any one of fruit juice, coffee, black tea, cocoa, lactic acid drinks, wine, sake, soup, tea, barley tea, sports drinks, and mineral water. 3. The method according to claim 1, wherein the amount of CO and gas dissolved under pressure in the beverage is less than 5/10000 by weight of the beverage. N2 gas and CO dissolved under pressure into the raw beverage. 2. The method according to claim 1, wherein the gas is a mixed gas. 5. The method according to claim 1, wherein the lower limit line of the pressure in the can internal pressure-temperature curve range is equal to or higher than the can internal pressure-temperature curve passing through a point of 1.4 atm at 5°C. 6. The method according to claim 1, wherein the flexible can is an aluminum can. 2-7. The method according to claim 1, wherein the filling temperature is 20 to 81°C. 8. The method according to claim 6, wherein the 002 ratio of the gas to be dissolved is 5 to 13%. 9. The method according to claim 6, wherein the applied pressure during dissolution of the mixed gas is 3 to 8 atm. 10. Claim 6 in which the filling temperature is 60°C
The method described in section. 11. The method according to claim 1, wherein the gas blown onto the top surface of the can after filling and before the seaming process is a mixed gas of N gas and CO□ gas. 3-

Claims (1)

[Claims] 1. Add N, gas, and CO to a non-carbonated beverage that has been heat sterilized after preparation. Gas amount or beverage weight ratio 15/1
After dissolving under pressure in an amount of 0,000 or less, when filling this beverage into a soft can, the pressure inside the can after filling and sealing is plotted on a coordinate axis with the humidity and the inside pressure at 5C. 1. The can internal pressure is higher than the temperature curve passing through the point equal to or higher than 1 atm, and the can internal pressure is 8 at the post-sterilization heating temperature.
Set the can internal pressure-temperature curve range below the can internal pressure-temperature curve passing through the point of ATM, and dissolve N in the beverage before filling.
The can internal pressure after filling and seaming is plotted on the above coordinates by changing the CO8 ratio and the pressurizing force when these gases are dissolved in the beverage with an upper limit of 8 atm, and the can internal pressure-temperature curve at each filling temperature is plotted. 1- Select in advance the CO1 ratio and melting pressure that fall within the range, fill at each filling temperature, and after filling, inert gas containing N, gas or CO, and scum can Filling method for non-carbonated beverages 02, characterized in that spraying on the top surface replaces the head space area with these gases and then tightening. , soup, tea) barley tea,
Claim 1 which is any sports drink
The method described in section. 3. Claim 1, wherein the amount of CO and gas dissolved under pressure in the beverage is less than 5/10000 of the weight ratio of the beverage.
The method described in section. 4. N, gas and CO dissolved under pressure in beverages. 2. The method according to claim 1, wherein the gas is a mixed gas. 5. The pressure lower limit line in the can internal pressure-temperature curve range is 5.
The method according to claim 1, wherein the internal pressure of the can is equal to or higher than the temperature curve passing through the 1.4 atmO point at C. 6. The method according to claim 1, wherein the flexible can is an aluminum can. 7. The method according to claim 1, wherein the filling humidity is 20 to 81G. 8. The method according to claim 6, wherein the CO1 ratio of the gas to be dissolved is 5 to 13%. 9. The method according to claim 6, wherein the applied pressure during dissolution of the mixed gas is 3 to 8 atm. 10. Claim 6 in which the filling humidity is 60C
The method described in section. 11. The method according to claim 1, wherein the gas sprayed onto the top surface of the can after filling and before the seaming process is a mixed gas of N gas and CO2 gas.