JP6811046B2 - Manufacturing method of packaged beverage - Google Patents

Description

The present invention relates to a method for producing a packaged beverage obtained by filling a packaging container with a beverage.

Conventionally, a container made of a synthetic resin such as polyethylene terephthalate is filled with a beverage, and a synthetic resin cap 1'(see FIG. 19) is attached to the mouth of the packaging container for the beverage. Packed beverages are widely available.

After filling the beverage packaging container with the beverage, the packaged beverage is produced by screwing the synthetic resin cap 1'to the mouth portion. When the synthetic resin cap 1'is screwed into the mouth portion, the beverage filled in the beverage packaging container leaks out, and the outer peripheral surface of the mouth portion of the beverage packaging container and the peripheral wall portion 23'of the synthetic resin cap 1' There is a problem that it adheres to the inner peripheral surface.

In order to solve this problem, conventionally, as shown in FIG. 19, cleaning water is sprayed on the gap / notch of the peripheral wall portion 23'of the synthetic resin cap 1'and the notch 26'of the top plate portion 21'. Therefore, there is known a technique for cleaning beverages adhering between the outer peripheral surface of the mouth portion of a beverage packaging container and the inner peripheral surface of the peripheral wall portion 23'(see Patent Documents 1 and 2).

Japanese Patent No. 4634994 Japanese Unexamined Patent Publication No. 2001-130518

In Patent Document 1, the notch 26'from the peripheral edge portion 22'to the peripheral wall portion 23'of the top plate portion 21'of the synthetic resin cap 1'is formed, so that the cleaning flowing in from the notch 26'is formed. Since water flows out from the gap between the lower end of the peripheral wall portion 23'and the packaging container, the beverage adhering between the outer peripheral surface of the mouth portion and the inner peripheral surface of the peripheral wall portion 23'can be washed.

Further, in Patent Document 2, the washing water that has flowed into the cap through the gap located at the boundary between the peripheral wall portion of the synthetic resin cap and the tamper evidence band spreads around the mouth portion of the packaging container due to the capillary phenomenon. , The beverage adhering between the outer peripheral surface of the mouth portion and the inner peripheral surface of the peripheral wall portion can be washed.

By the way, when such a packaging container is filled with an effervescent beverage containing cereal decomposition products such as beer, after the packaging container is filled with the effervescent beverage containing cereal decomposition products, the inside of the packaging container is subjected to a so-called jet forming method or the like. By carrying out a forming step in which the effervescent beverage containing the grain decomposition product of the above is intentionally and remarkably foamed, the oxygen remaining in the packaging container is removed by the foaming.

Oxygen remaining in the packaging container can be removed by closing the cap with a synthetic resin cap when bubbles are overflowing from the mouth of the packaging container. At this time, the outer peripheral surface and the peripheral wall of the mouth are closed. A cereal decomposition product-containing effervescent beverage is remarkably adhered to the inner peripheral surface of the portion in the form of foam and liquid. Further, when a synthetic resin cap having an inner stopper is used, when the above forming step is carried out, the cereal decomposition product-containing effervescent beverage is remarkably adhered between the top plate portion and the inner stopper.

When such remarkable adhesion occurs, there arises a problem that the cleaning methods envisioned in Patent Documents 1 and 2 take a considerable amount of time to clean or cannot be cleaned. If it cannot be washed sufficiently and significant adhesion of the cereal decomposition product-containing effervescent beverage remains, the cereal decomposition product-containing effervescent beverage is nutritious and the microorganisms propagate in the synthetic resin cap. As a result, poor appearance (darkening of synthetic resin cap, darkening of mouth, etc.), offensive odor, etc. are likely to occur, which may cause hygiene problems.

In view of the above problems, the present invention can wash the beverage adhering between the outer peripheral surface of the mouth portion of the beverage container and the inner peripheral surface of the peripheral wall portion of the synthetic resin cap in a short time after the forming step. Including a step, further, when the synthetic resin cap is a so-called two-piece cap having an inner plug, a cleaning step capable of cleaning the beverage adhering between the inner surface of the top plate and the inner plug in a short time. It is an object of the present invention to provide a method for producing a packaged beverage containing the above.

In order to solve the above problems, the present invention is a method for producing a packaged beverage obtained by filling a beverage container with a granule decomposition product-containing effervescent beverage, wherein the beverage container is filled with the cereal decomposition product-containing foam. A filling step of filling the sex beverage, a forming step of foaming the liquid level of the cereal decomposition product-containing effervescent beverage in the beverage container from the mouth of the beverage container, and a state in which the liquid level is foamed. The cleaning step includes a sealing step of attaching a synthetic resin cap to the mouth of the beverage container and a cleaning step of cleaning the beverage container to which the synthetic resin cap is attached, and the cleaning step includes the synthetic resin cap. a first cleaning step of jetting a cleaning liquid to, after the first cleaning step, seen including a second cleaning step of jetting a cleaning gas into the synthetic resin cap, said synthetic resin cap, the top plate portion and the It is provided with a cap body having a side wall portion that hangs continuously on the peripheral edge portion of the top plate portion, and an inner plug that is attached to the cap body and covers the mouth portion of the beverage container, and penetrates the top plate portion. The holes are formed, and the first cleaning step includes a top surface cleaning step of injecting the cleaning liquid from above the top plate portion toward the top plate portion, and the top surface cleaning step of spraying the cleaning liquid from the side of the side wall portion. Provided is a method for producing a packaged beverage, which comprises a side cleaning step of injecting a cleaning liquid toward a side wall portion, and the top surface cleaning step and the side surface cleaning step are performed as separate steps from each other . Wash.

In the first cleaning step of the above invention (Invention 1), the cleaning liquid may be sprayed to a predetermined position of the synthetic resin cap, and if there are a plurality of predetermined positions of the synthetic resin cap, each position The cleaning liquid may be sprayed in any order. Similarly, in the second cleaning step, the cleaning gas may be sprayed to a predetermined position of the synthetic resin cap, and if there are a plurality of predetermined positions of the synthetic resin cap, an arbitrary position is desired for each position. The cleaning gas may be injected in order. However, in the above invention (Invention 1), it is necessary to perform the second cleaning step after the first cleaning step.

Oite above onset bright, in the first cleaning step, after the top surface cleaning process is preferably carried out with the side cleaning process, in the side cleaning step, a position of substantially 180 ° in a plan view of the beverage container from two directions to inject the cleaning liquid toward the side wall portion of the synthetic resin cap has preferably a.

Oite above onset bright, in the side cleaning step, for injecting the cleaning liquid and pressurized gas and the gas-liquid mixing mist formed by mixing using a two-fluid spray nozzle it is not preferred.

Oite above onset bright, in the side cleaning process, the cleaning liquid, the spread angle is injected so as to spread the sector-shaped 30 to 120 ° in a plan view of the beverage container is not preferable.

Oite above onset bright, before Symbol ceiling cleaning process, it has the preferred to inject the cleaning liquid toward the top plate portion of the synthetic resin cap with 1 fluid spray nozzle.

Oite above onset bright, in the top surface cleaning step, the cleaning solution is not the preferred the spread angle in the plan view of the beverage container is injected so as to spread in a substantially conical shape of 15 to 90 ° ..

Oite above onset bright, in the second cleaning step, the cleaning gas is not the preferable the spread angle is injected so as to spread the sector-shaped 15 to 90 ° in a plan view of the beverage container ..

According to the present invention, after the forming step, a cleaning step capable of cleaning the beverage adhering between the outer peripheral surface of the mouth portion of the beverage container and the inner peripheral surface of the peripheral wall portion of the synthetic resin cap in a short time is included. Furthermore, when the synthetic resin cap is a so-called two-piece cap having an inner plug, the container is packed with a cleaning step that can wash the beverage adhering between the inner surface of the top plate and the inner plug in a short time. A method for producing a beverage can be provided.

FIG. 1 is a flowchart showing a method for producing a packaged beverage according to an embodiment of the present invention. FIG. 2 is a partially enlarged cross-sectional view schematically showing a filling process according to an embodiment of the present invention. FIG. 3 is a partially enlarged cross-sectional view schematically showing a forming step according to an embodiment of the present invention. FIG. 4 is a partially enlarged cross-sectional view schematically showing a sealing process according to an embodiment of the present invention. FIG. 5 is a side view schematically showing a first cleaning step (top cleaning step) according to the embodiment of the present invention. FIG. 6 is a plan view schematically showing a first cleaning step (side cleaning step) according to the embodiment of the present invention. FIG. 7 is a perspective view showing a state (No. 1) in which a cleaning liquid is ejected from a fluid nozzle used in the first cleaning step in one embodiment of the present invention. FIG. 8 is a perspective view showing a state (No. 2) in which a cleaning liquid is ejected from a fluid nozzle used in the first cleaning step in one embodiment of the present invention. FIG. 9 is a half-section side view showing a schematic configuration of a synthetic resin cap according to an embodiment of the present invention. FIG. 10 is a semi-cross-sectional side view showing a state in which the synthetic resin cap according to the embodiment of the present invention is attached to the mouth of a plastic bottle. FIG. 11 is a plan view showing a schematic configuration of a synthetic resin cap according to an embodiment of the present invention. FIG. 12 is a plan view (No. 1) schematically showing the structure of the inner surface of the top plate portion of the synthetic resin cap according to the embodiment of the present invention. FIG. 13 is a plan view (No. 2) schematically showing the structure of the inner surface of the top plate portion of the synthetic resin cap according to the embodiment of the present invention. FIG. 14 is a plan view (No. 3) schematically showing the structure of the inner surface of the top plate portion of the synthetic resin cap according to the embodiment of the present invention. FIG. 15 is a plan view (No. 4) schematically showing the structure of the inner surface of the top plate portion of the synthetic resin cap according to the embodiment of the present invention. FIG. 16 is a plan view (No. 5) schematically showing the structure of the inner surface of the top plate portion of the synthetic resin cap according to the embodiment of the present invention. 17 (A) and 17 (B) are plan views schematically showing another aspect (No. 1) of the through hole and the radial groove portion of the synthetic resin cap in one embodiment of the present invention. FIG. 18 is a plan view schematically showing another aspect (No. 2) of the through hole and the radial groove portion of the synthetic resin cap according to the embodiment of the present invention. FIG. 19 is a semi-cross-sectional side view showing a schematic configuration of a conventional synthetic resin cap.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a flowchart showing a method for producing a packaged beverage according to the present embodiment, FIG. 2 is a partially enlarged sectional view schematically showing a filling process in the present embodiment, and FIG. 3 is a partially enlarged cross-sectional view showing the present embodiment. FIG. 4 is a partially enlarged cross-sectional view schematically showing a forming step in the above, FIG. 4 is a partially enlarged cross-sectional view schematically showing a sealing process in the present embodiment, and FIG. 5 is a partially enlarged cross-sectional view in the first cleaning step in the present embodiment. FIG. 6 is a side view schematically showing a situation in which the cleaning liquid is sprayed onto the top plate portion of the synthetic resin cap, and FIG. 6 is a situation in which the cleaning liquid is sprayed onto the side wall portion of the synthetic resin cap in the first cleaning step in the present embodiment. 7 and 8 are perspective views showing a state in which a cleaning liquid is ejected from a fluid nozzle used in the first cleaning step in the present embodiment.

As shown in FIG. 1, the method for producing a packaged beverage according to the present embodiment is a method for producing a packaged beverage obtained by filling a beverage container with a sparkling beverage containing a grain decomposition product, and is a beverage container. Filling step (S1) of filling the beverage with a sparkling beverage containing a grain decomposition product, a forming step (S2) of foaming the liquid level of the foaming beverage containing a grain decomposition product in the beverage container from the mouth of the beverage container, liquid. It includes a sealing step (S3) of attaching a synthetic resin cap to the mouth of the beverage container with a foamed surface and a cleaning step (S4) of cleaning the beverage container to which the synthetic resin cap is attached.

[Filling process]
First, a plastic bottle 10 as a beverage container is filled with a cereal decomposition product-containing effervescent beverage 4 (see S1 and FIG. 2). At this time, the plastic bottle 10 is filled with the cereal decomposition product-containing effervescent beverage 4 so as to form the headspace portion 13 on the liquid surface of the cereal decomposition product-containing effervescent beverage 4 (see FIG. 2).

The plastic bottle 10 as a beverage container includes polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate, and polytrimethylene naphthalate, olefin resins such as polyethylene and polypropylene, and polycarbonate. It may be composed of a resin material such as a resin or a polyacrylate resin. The plastic bottle 10 is a packaging container containing a cereal decomposition product-containing sparkling beverage 4 as a content, and its capacity is, for example, 100 to 5000 mL.

The "cereal decomposition product-containing effervescent beverage 4" in the present embodiment is not particularly limited as long as it is an effervescent beverage containing a cereal decomposition product, but is preferably a beverage containing malt and barley decomposition products. Can be exemplified. In the present embodiment, the "cereals" are not particularly limited as long as they are cereals, and examples thereof include barley, wheat, soybeans, peas, and the like, preferably barley. Specific embodiments of cereal decomposition products include decomposition products of malt, barley, wheat, soybean, pea, and corn, and examples thereof include soybean protein, soybean peptide, pea protein, and corn protein decomposition products.

A specific example of the "cereal decomposition product-containing effervescent beverage 4" in the present embodiment is preferably a malt decomposition product-containing effervescent beverage, and more preferably a beer-based beverage. The beer-based beverage usually means a beverage having a beer-specific taste and aroma obtained when beer is produced (when beer is produced based on fermentation with yeast or the like), for example, beer, sparkling liquor, etc. Examples thereof include fermented malt beverages such as liqueurs, other brewed beers, and non-fermented malt beverages such as completely alcohol-free malt beverages (non-alcoholic malt beverages). Further, the beer-based beverage may be not only a malt beverage but also a non-malt beverage that does not use wheat or malt. Examples of such non-wheat beverages include beer-like effervescent alcohol-containing beverages and completely alcohol-free beverages using peas, soybeans, corn and the like.

When filling the plastic bottle 10 with the effervescent beverage 4 containing a grain decomposition product, the air in the plastic bottle 10 may be replaced with carbon dioxide gas in advance, or the inside of the plastic bottle 10 may be pressurized in advance. Good. As a result, when the plastic bottle 10 is filled with the cereal decomposition product-containing effervescent beverage 4, it is possible to prevent the cereal decomposition product-containing effervescent beverage 4 from foaming, and the plastic bottle 10 is filled. It is possible to prevent quality deterioration due to oxidation of the effervescent beverage 4 containing a cereal decomposition product.

[Forming process]
Next, the method of spraying a jet solution called jet forming on the liquid surface of the cereal decomposition product-containing effervescent beverage 4 filled in the plastic bottle 10, a method of applying ultrasonic waves from the outside of the plastic bottle 10, and the like are used. The cereal decomposition product-containing effervescent beverage 4 is whipped, and the whipped cereal decomposition product-containing effervescent beverage 4 overflows from the mouth 11 of the plastic bottle 10 (see S2 and FIG. 3).

When the plastic bottle 10 is filled with the cereal decomposition product-containing effervescent beverage 4, the headspace portion 13 is formed on the liquid surface of the cereal decomposition product-containing effervescent beverage 4 (see FIG. 2). If oxygen is present in the headspace portion 13, the flavor, flavor, and the like are deteriorated due to the oxidation of the cereal decomposition product-containing sparkling beverage 4. Therefore, the cereal decomposition product-containing effervescent beverage 4 filled in the plastic bottle 10 is foamed and overflows from the mouth portion 11 of the plastic bottle 10. As a result, oxygen in the headspace portion 13 can be removed, and quality deterioration due to oxidation of the cereal decomposition product-containing sparkling beverage 4 can be suppressed.

[Seal process]
In the jet forming step (see S2 and FIG. 2), the synthetic resin cap 1 was placed on the plastic bottle 10 in a state where the foamed cereal decomposition product-containing effervescent beverage was overflowing from the mouth 11 of the plastic bottle 10. It is attached so as to cover the mouth portion 11 (see S3 and FIG. 4). As a result, oxygen in the headspace portion 13 can be removed and the plastic bottle 10 can be closed.

Here, the synthetic resin cap 1 in the present embodiment will be described. FIG. 9 is a half-cross-sectional side view showing a schematic configuration of the synthetic resin cap in the present embodiment, and FIG. 10 is a half showing a state in which the synthetic resin cap in the present embodiment is attached to the mouth of a plastic bottle. It is a cross-sectional side view, and FIG. 11 is a plan view which shows the schematic structure of the synthetic resin cap in this embodiment.

As shown in FIGS. 9 and 10, the synthetic resin cap 1 in the present embodiment includes a cap main body 2 and an inner plug 3 that is attached to the cap main body 2 and covers the mouth portion 11 of the plastic bottle 10. , A so-called two-piece cap.

The cap body 2 is connected to the top plate portion 21 having a substantially circular shape in a plan view, the side wall portion 23 that continuously hangs from the peripheral edge portion 22 of the top plate portion 21, and the lower end of the side wall portion 23 via a plurality of bridges 24. It has a tamper evidence band (TE band) 25 and the like.

The inner plug 3 has a substantially circular main body 31 in a plan view, an annular side seal 32 that bends downward from the outer peripheral edge of the main body 31, and a substantially cylindrical middle leg that extends downward from the lower surface of the main body 31. It has a unit 33. When the synthetic resin cap 1 is attached to the mouth portion 11 of the plastic bottle 10, the side seal portion 32 enters between the side wall portion 23 of the cap body 2 and the mouth portion 11 of the plastic bottle 10, and the midfoot portion 33 It adheres to the inner surface of the mouth portion 11. As a result, the mouth portion 11 of the plastic bottle 10 is well sealed.

The synthetic resin cap 1 (cap body 2 and inner plug 3) may be made of a resin material in consideration of hermeticity and recyclability. The diameter (outer diameter) of the synthetic resin cap 1 (cap body 2) can be appropriately set according to the size of the mouth portion 11 of the plastic bottle 10, but is, for example, about 20 to 60 mm.

As shown in FIG. 11, in the plan view of the cap body 2, a plurality of through holes 26 are provided in the vicinity of the peripheral edge portion 22 of the top plate portion 21 at predetermined intervals along the circumferential direction of the top plate portion 21. They are formed in parallel. Each through hole 26 has a substantially rectangular shape with rounded corners of about 0.8 mm × 3 mm, and is formed in the vicinity of the peripheral edge portion 22 of the top plate portion 21 so that its long axis faces the center of the top plate portion 21. ing.

Although an embodiment having eight through holes 26 is illustrated in FIG. 11, the embodiment is not limited to such an embodiment, and at least one through hole 26 may be formed, but it is preferable. Two or more, more preferably 8 to 16, and particularly preferably 12 to 16 through holes 26 are formed. Further, in FIG. 11, a substantially rectangular through hole 26 having rounded corners is illustrated, but the shape of the through hole 26 is not limited to this embodiment, and for example, a substantially elliptical shape, a substantially octagonal shape, or the like. Any shape such as a polygonal shape that allows gas or liquid to pass through may be used.

As shown in FIG. 10, the through hole 26 is formed at a position facing the upper end of the peripheral wall of the mouth portion 11 when the synthetic resin cap 1 according to the present embodiment is attached to the mouth portion 11 of the plastic bottle 10. The end portion of the through hole 26 on the peripheral edge portion 22 side is preferably formed so as to face the upper end portion of the peripheral wall of the mouth portion 11. Since the through hole 26 is formed at such a position, the cereal decomposition product-containing effervescent beverage adhering between the top plate portion 21 and the inner plug 3 (main body portion 31) due to the washing water flowing from the through hole 26. Can be washed away. It should be noted that facing the end on the peripheral edge 22 side or the upper end of the peripheral wall of the mouth 11 means that the synthetic resin cap 1 attached to the mouth 11 of the plastic bottle 10 is viewed from above the through hole 26. In a plan view, it means that the end portion of the through hole 26 has a portion overlapping the upper end portion of the peripheral wall of the mouth portion 11.

As shown in FIGS. 12 to 16, radial groove portions 271 extending radially from the substantially center of the top plate portion 21 toward the peripheral edge portion 22 are formed on the inner surface of the top plate portion 21. The radial groove 271 serves as a flow path for the washing water that has flowed between the top plate 21 and the inner plug 3, so that the grains adhered between the top plate 21 and the inner plug 3. The decomposition product-containing effervescent beverage can be effectively washed.

In the embodiment shown in FIGS. 12 to 15, 16 radial groove portions 271 extending radially from the substantially center of the top plate portion 21 toward the peripheral edge portion 22 are formed, but the present invention is not limited to this embodiment. For example, the number of radial grooves 271 can be appropriately set in the range of 4 to 16.

In the present embodiment, the plurality of through holes 26 are each formed at positions corresponding to the radial groove portion 271. As a result, the cleaning water flowing from the through hole 26 can be easily distributed between the top plate portion 21 and the inner plug 3 through the radial groove portion 271, and the cleaning water mainly flowing through the radial groove portion 271 (top plate portion 21 and the inside). The washing water containing the beverage adhering to the stopper 3) is easily discharged from the through hole 26.

In the present embodiment, a circumferential groove portion 272 is formed in the vicinity of the peripheral edge portion 22 on the inner surface of the top plate portion 21 so as to be continuous between the radial groove portions 271 adjacent to each other in the circumferential direction of the top surface portion 21. The beverage adhering to the inner plug 3 in the vicinity of the peripheral edge portion 22 of the top plate portion 21 can be effectively washed by the washing water flowing through the circumferential groove portion 272.

As shown in FIG. 9, a cap thread portion 231 is formed on the inner peripheral surface of the side wall portion 23 of the cap body 2, and the bottle thread portion is formed on the outer peripheral surface of the mouth portion 11 of the plastic bottle 10. By screwing with 12, the plastic bottle 10 can be sealed.

On the inner peripheral surface of the side wall portion 23, a plurality of notch portions 232 that divide the cap thread portion 231 at predetermined intervals extend in the vertical direction (the axial direction of the side wall portion 23, the direction orthogonal to the top plate portion 21). It is provided in this way. In the present embodiment, the circumferential position of at least a part of the plurality of radial groove portions 271 (the end portion on the peripheral edge portion 22 side) coincides with the circumferential position of each of the plurality of cutout portions 232. Is preferable. As a result, the washing water that has flowed between the cap body 2 and the inner plug 3 and the mouth portion 11 is easily discharged through the notch 232, and the washing water is easily discharged between the top plate portion 21 and the inner plug 3. It can be prevented from remaining. Further, the washing water flowing from below the side wall portion 23 flows through the notch portion 232 and flows between the top plate portion 21 and the inner plug 3, and is easily discharged from the through hole 26. Therefore, the side wall portion 23 and the mouth portion It also has the effect of improving the cleaning effect between the two. The through hole 26 may be formed so as to overlap the radial groove portion 271 whose end coincides with the notch 232, or may be formed so as to overlap the radial groove 271 whose end does not coincide with the notch 232. It is good, but the former can improve the cleaning effect more.

A plurality of bridges 24 are provided at a boundary portion between the side wall portion 23 of the cap body 2 and the tamper episode band 25 at predetermined intervals along the circumferential direction. The plurality of bridges 24 connecting the side wall portion 23 of the cap body 2 and the tamper evidence band 25 are configured to be broken by being pulled by a predetermined force. The inner surface of the tamper evidence band 25 is provided with an intermittent locking portion 28 that is folded inward and diagonally upward from the lower end portion thereof and is intermittent along the circumferential direction. The locking portion 28 is located directly below the bulging portion 13 of the mouth portion 11 of the plastic bottle 10 in a state where the synthetic resin cap 1 according to the present embodiment is attached to the mouth portion 11 of the plastic bottle 10. , It is locked to the bulging portion 13 by the opening operation.

When the synthetic resin cap 1 attached to the mouth portion 11 of the plastic bottle 10 starts to rotate in the opening direction, the locking portion 28 is locked to the bulging portion 13 of the mouth portion 11 and pulled to the plurality of bridges 24. Force acts. When the synthetic resin cap 1 is further rotated, the plurality of bridges 24 are greatly pulled and broken. As a result, the top plate portion 21 and the side wall portion 23 are separated from the tamper evidence band 25, and the plastic bottle 10 is opened. The tamper evidence band 25 after opening does not come off from the plastic bottle 10 because the locking portion 28 is caught by the bulging portion 13.

[Washing process]
As described above, the synthetic resin cap 1 in the present embodiment is the mouth portion 11 of the plastic bottle 10 in a state where the cereal decomposition product-containing effervescent beverage 4 filled in the plastic bottle 10 is foamed by a jet forming method. (See S2 to S3, FIGS. 3 and 4). Therefore, the cereal decomposition product-containing foaming property is formed between the side wall portion 23 and the mouth portion 11 of the synthetic resin cap 1 attached to the mouth portion 11 of the plastic bottle 10 and between the top plate portion 21 and the inner plug 3. Beverage 4 (foam) adheres. Therefore, in the present embodiment, the cereal decomposition product-containing effervescent beverage 4 (foam) adhering between the side wall portion 23 and the mouth portion 11 of the synthetic resin cap 1 and between the top plate portion 21 and the inner plug 3 (foam). ) Is washed (S4).

The cleaning step in the present embodiment includes a first cleaning step of sufficiently diluting and washing away the grain decomposition product-containing effervescent beverage 4 that has penetrated into the synthetic resin cap 1 using a cleaning liquid, and after the first cleaning step. It includes a second cleaning step of removing a slight amount of grain decomposition product-containing effervescent beverage 4 remaining in the synthetic resin cap 1 and a cleaning liquid from the synthetic resin cap 1 using a cleaning gas.

<First cleaning process>
The first cleaning step includes a side cleaning step of injecting a cleaning liquid from the side of the side wall portion 23 of the synthetic resin cap 1 toward the side wall portion 23, and a side cleaning step from above the top plate portion 21 toward the top plate portion 21. It includes a top surface cleaning step of spraying a cleaning liquid.

<Side cleaning process>
As shown in FIG. 6, in the side surface cleaning step, the cleaning liquid is sprayed from the side of the side wall portion 23 of the synthetic resin cap 1 toward the side wall portion 23. By injecting the cleaning liquid from the side of the side wall portion 23, the cleaning liquid can flow in through the gap at the boundary between the cap body 2 (side wall portion 23) and the tamper evidence band 25. The cleaning liquid in the first cleaning step (side surface cleaning step) and the cleaning gas in the second cleaning step described later are not only in the gap between the cap body 2 (side wall 23) and the tamper evidence band 25, but also in the side wall. When the cleaning slit is provided at a certain height position of 23, the cleaning slit may be sprayed toward the cleaning slit, or may be sprayed toward the gap at the lower end of the tamper evidence band 25. The inflowing cleaning liquid spreads between the side wall portion 23 and the mouth portion 11, and the cereal decomposition product-containing effervescent beverage 4 (foam) adhering between the side wall portion 23 and the mouth portion 11 is washed. Further, since a part of the inflowing cleaning water also spreads between the top plate portion 21 and the inner plug 3, the cleaning liquid remaining between the top plate portion 21 and the inner plug 3 after the top surface cleaning step described later. And the effervescent beverage (foam) 4 containing cereal decomposition products can also be washed away. As the cleaning liquid, clean water can be typically used, and an additive such as hypochlorous acid may be contained.

In the side cleaning step, when viewed from above the top plate portion 21 of the synthetic resin cap 1, the positions facing each other with the synthetic resin cap 1 sandwiched (the synthetic resin cap 1 is the center of symmetry). The cleaning liquid is sprayed from two directions of the position (position of approximately 180 °) toward the side wall portion 23 of the synthetic resin cap 1. As a result, the cleaning liquid mainly flowing in from the gap at the boundary between the side wall portion 23 and the tamper evidence band 25 can be spread over the entire space between the side wall portion 23 and the mouth portion 11.

In the side cleaning step, the cleaning liquid is injected as a gas-liquid mixture mist in which the cleaning liquid and the compressed gas (clean air or the like) are mixed by using the two-fluid nozzle 52. As the injection shape of the cleaning liquid (gas-liquid mixture mist) injected from the nozzle of the two-fluid nozzle 52, for example, a linear shape, a spread angle θ2 in the top view of the plastic bottle 10 is preferably 30 to 120 °, more preferably 45. Examples thereof include a substantially conical pattern of about 90 ° (see FIG. 7) and a fan-shaped pattern (see FIG. 8). When the position of the plastic bottle 10 with respect to the two-fluid nozzle 52 is fixed (when the cleaning liquid is sprayed while the plastic bottle 10 is stationary), the injection shape of the cleaning liquid may be linear, but the two-fluid nozzle 52 On the other hand, when cleaning while moving the plastic bottle 10, a substantially conical pattern (see FIG. 7), a fan-shaped pattern (see FIG. 8), and the like are preferable in consideration of the balance between cleaning ability and economy. In the side surface cleaning step in the present embodiment, a fan-shaped two-fluid nozzle having a small spray area, a high spray striking force per unit area, and a fan-shaped pattern (see FIG. 8) capable of increasing the cleaning ability is used. Is preferable.

Since the two-fluid nozzle 52 can inject a gas-liquid mixture mist (mist-like water particles) by mixing the cleaning liquid and the compressed gas with gas and liquid, the amount of the cleaning liquid used can be suppressed. Further, the gas-liquid mixture of the cleaning liquid and the compressed gas forms mist-like water particles in which the pressure of the compressed gas is added to the hydraulic pressure of the cleaning liquid, so that a high striking force can be obtained.

The amount of the cleaning liquid (gas-liquid mixture mist) sprayed from the two-fluid nozzle 52 is preferably 0.5 to 3.0 L / min, and the pressure of the compressed gas supplied to the two-fluid nozzle 52 is 0.15 to 0. It is preferable that the pressure is about 0.8 MPa and the pressure of the cleaning liquid is about 0.1 to 0.4 MPa. In order to achieve both economy and detergency, it is preferable to set the ratio of the pressure of the compressed gas to the pressure of the detergency between 1.5 and 3: 1.

The cleaning time in the side surface cleaning step is preferably about 3 to 30 seconds, and more preferably about 5 to 10 seconds. If the washing time is less than 3 seconds, it may be difficult to effectively wash the cereal decomposition product-containing effervescent beverage 4 (foam) adhering between the side wall portion 23 and the mouth portion 11. Even if it exceeds seconds, the amount of the cleaning liquid used in the side cleaning step increases, but further improvement in the cleaning effect may not be observed.

<Top surface cleaning process>
As shown in FIG. 5, in the top surface cleaning step, the cleaning liquid is sprayed from the one fluid nozzle 51 located above the top plate portion 21 of the synthetic resin cap 1 toward the top plate portion 21. By injecting the cleaning liquid from above the top plate portion 21, the cleaning liquid mainly flows in from the through holes 26 formed in the top plate portion 21. Since the cleaning liquid flowing in from the through hole 26 spreads between the top plate portion 21 and the inner plug 3 through the radial groove portion 271 formed on the inner surface of the top plate portion 21, between the top plate portion 21 and the inner plug 3. The cereal decomposition product-containing effervescent beverage 4 (foam) adhering to the above can be washed.

In the top surface cleaning step, the spread angle θ1 spreads from the one fluid nozzle 51 toward the top plate portion 21 in a substantially conical shape (see FIG. 7) preferably 15 to 90 °, more preferably 15 to 45 °. It is preferable to spray the cleaning liquid. By injecting the cleaning liquid so as to spread in a substantially conical shape, the cleaning liquid can flow in substantially uniformly from a plurality of through holes 26 parallel to each other at predetermined intervals along the circumferential direction of the top plate portion 21. , Effective cleaning is possible.

The cleaning time in the top surface cleaning step is preferably about 3 to 30 seconds, and more preferably about 5 to 10 seconds. If the washing time is less than 3 seconds, it may be difficult to effectively wash the cereal decomposition product-containing effervescent beverage 4 (foam) adhering between the top plate portion 21 and the inner plug 3. Even if it exceeds 30 seconds, the amount of the cleaning liquid used in the top surface cleaning step increases, but further improvement in the cleaning effect may not be observed.

In the top surface cleaning step, the cleaning liquid flowing in from the through hole 26 flows through the radial groove portion 271 and the circumferential groove portion 272 formed on the inner surface of the top plate portion 21 as a flow path, and the top plate portion 21 and the inner plug 3 It is discharged together with the cereal decomposition product-containing effervescent beverage 4 (foam) adhering between the space and between the side wall portion 23 and the mouth portion 11.

In the washing step (side washing step and top washing step) in the present embodiment, the plastic bottle 10 filled with the effervescent beverage 4 containing a grain decomposition product and closed by the synthetic resin cap 1 is stationary. It may be carried out, or it may be carried out while moving the plastic bottle 10.

<Second cleaning process>
In the method for producing a packaged beverage according to the present embodiment, after the first cleaning step described above, a cleaning gas (high pressure air; preferably) is directed toward the side wall portion 23 of the synthetic resin cap 1 from the side of the side wall portion 23. Further includes a step (second cleaning step) of spraying 0.2 to 0.8 MPa, more preferably 0.4 to 0.8 MPa, particularly preferably 0.5 to 0.7 MPa). By blowing such high-pressure air, the inside of the cap body 2 (between the side wall portion 23 and the mouth portion 11 and between the top plate portion 21 and the inner plug 3 (particularly, inside the radial groove portion 271 and inside the circumferential groove portion 272). Etc.)) The washing water remaining in) can be blown off together with the cereal decomposition product-containing effervescent beverage 4 (foam) to remove it.

In the second cleaning step, the injection shape of the cleaning gas is not particularly limited, and examples thereof include a fan shape, a conical shape, and a linear shape. Of these, the cleaning gas is particularly preferably sprayed onto the side wall portion 23 so as to spread in a fan shape having a spreading angle of 15 to 90 °, more preferably a spreading angle of 15 to 30 °.

The cleaning time in the second cleaning step is preferably about 3 to 30 seconds, more preferably about 5 to 10 seconds. If the washing time is less than 3 seconds, it may be difficult to effectively wash the cereal decomposition product-containing effervescent beverage 4 adhering between the side wall portion 23 and the mouth portion 11, and 30 seconds is required. Even if it exceeds the limit, the amount of cleaning gas used in the second cleaning step increases, but the cleaning effect may not be further improved.

In this way, a packaged beverage is produced in which the effervescent beverage 4 containing a cereal decomposition product is filled in a plastic bottle 10. According to the method for producing a packaged beverage according to the present embodiment, in the first cleaning step, between the side wall portion 23 of the synthetic resin cap 1 and the mouth portion 11 of the plastic bottle 10, and the top of the synthetic resin cap 1. The grain decomposition product-containing effervescent beverage 4 (foam) adhering between the plate portion 21 and the inner stopper 3 can be effectively washed in a short time.

In a so-called two-piece cap such as the synthetic resin cap 1 in the present embodiment, the through hole 26 is formed in the vicinity of the peripheral edge portion 22 of the top plate portion 21, so that the one fluid nozzle 51 can be used in the top surface cleaning step. The sprayed cleaning fluid flows into the top plate portion 21 and the inner plug 3 through the through hole 26. A portion of the cleaning solution that has flowed in between them spreads between them and flows downward through the notch 232. As a result, the cereal decomposition product-containing effervescent beverage 4 (foam) adhering between the top plate portion 21 and the inner plug 3 and between the side wall portion 23 and the mouth portion 11 can be washed. Further, in the second cleaning step, a sufficient cleaning effect can be obtained by spraying the cleaning gas onto the side wall portion 23 of the synthetic resin cap 1, but the cleaning gas is applied to the top plate portion 21 of the synthetic resin cap 1. The cleaning gas may be sprayed onto each of the top plate portion 21 and the side wall portion 23.

Further, since the radial groove portion 271 is formed on the inner surface of the top plate portion 21 of the synthetic resin cap 1 in the present embodiment, the cleaning liquid flowing through the through hole 26 is formed between the top plate portion 21 and the inner plug 3. It will be easier to spread in between. Therefore, the cereal decomposition product-containing effervescent beverage 4 (foam) adhering between the top plate portion 21 and the inner plug 3 is washed away together with the cleaning liquid flowing through the radial groove portion 271. Further, since the circumferential groove portion 272 is formed, it is possible to prevent the cereal decomposition product-containing effervescent beverage 4 (foam) from remaining between the vicinity of the peripheral edge portion 22 of the top plate portion 21 and the inner plug 3. Can be done. Therefore, the cereal decomposition product-containing foaming property adhered between the top plate portion 21 of the synthetic resin cap 1 and the inner plug 3, and between the side wall portion 23 of the synthetic resin cap 1 and the mouth portion 11 of the plastic bottle 10. Beverages (foam) can be washed effectively in a short time.

The embodiments described above are described for facilitating the understanding of the present invention, and are not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

In the above embodiment, the first cleaning step includes a side cleaning step of injecting the cleaning liquid from the side of the side wall portion 23 of the synthetic resin cap 1 and an injection of the cleaning liquid from above the top plate portion 21 of the synthetic resin cap 1. The present invention includes, but is not limited to, an aspect based on this order, including a top surface cleaning step. For example, the top surface cleaning step may be performed first, and then the side surface cleaning step may be performed. Further, the side surface cleaning step and the top surface cleaning step may be performed at the same time, or at least one of the cleaning steps may be performed once or a plurality of times.

In the above embodiment, after the first cleaning step using the cleaning liquid, the second step using the cleaning gas is performed, but it is essential that the final step is the second cleaning step. In the manufacturing process of plastic bottles filled with soft drinks, etc., a method of alternately spraying a cleaning liquid and a cleaning gas is usually adopted in order to clean the beverage slightly adhering to the inside of the synthetic resin cap. In order to clean the effervescent beverage (foam) containing grain decomposition products that is remarkably adhered to the inside of the synthetic resin cap 1 in the step (S3), the method for cleaning the plastic bottle filled with the soft beverage or the like is used as a countermeasure against microorganisms. The above is insufficient. First, the inside of the synthetic resin cap 1 is diluted with a sufficient cleaning solution and washed away, and then the residual liquid in the synthetic resin cap 1 containing a small amount of nutrients is washed with a cleaning gas. It is necessary to discharge it to the outside. From this point of view, considering the detergency and economy, it is desirable that the above-mentioned cleaning step (S4) is composed of one first cleaning step and one second cleaning step. In this case, the top surface cleaning step (see FIG. 5) and the side surface cleaning step (see FIG. 6) are preferably performed for about 3 to 15 seconds, respectively. However, the present invention is not limited to such an aspect, and for example, the second cleaning step may be performed before the first cleaning step.

In the above embodiment using the two-piece cap, the radial groove portion 271 and the circumferential groove portion 272 are formed on the inner surface of the top plate portion 21, but the present invention is not limited to such an embodiment. For example, neither the radial groove portion 271 nor the circumferential groove portion 272 may be formed, or only the radial groove portion 271 may be provided and the circumferential groove portion 272 may not be formed (see FIG. 12).

In the above embodiment, the through hole 26 and the radial groove portion 271 are formed so as to have substantially the same width in the lateral direction and substantially the same center in the lateral direction. The mode is not limited to the above. For example, as shown in FIGS. 17A and 17B, the width of the through hole 26 in the lateral direction may be larger than the width of the radial groove 271 in the lateral direction (see FIG. 17A). Further, the substantially center of the through hole 26 in the lateral direction and the substantially center of the radial groove portion 271 in the lateral direction may be deviated from each other (see FIG. 17B). Further, as shown in FIG. 18, the widths of the through hole 26 and the radial groove 271 in the lateral direction are substantially the same as each other, but the substantially center of the through hole 26 in the lateral direction and the radial groove 271 in the lateral direction are substantially the same. It may be off-center.

Hereinafter, the effects of the top surface cleaning step and the side surface cleaning step in the first cleaning step will be described in detail with reference to reference examples, and the present invention will be described in more detail with reference to Examples and Comparative Examples. Is not limited to the following examples and the like.

[Reference Example 1]
A PET bottle (contents: 500 mL) was prepared, and the PET bottle was filled with beer (filling step). Next, by spraying jet water toward the liquid surface of the beer in the PET bottle, the beer is foamed and overflows from the PET bottle (forming process), and in that state, the synthetic resin cap 1 is placed on the mouth of the PET bottle. Attached (sealing process).

The synthetic resin cap 1 has the configurations shown in FIGS. 9, 11 and 12, and has eight through holes 26 and 16 radial groove portions 271 formed in the top plate portion 21, and eight through holes. Reference numeral 26 denotes a polypropylene synthetic resin cap 1 formed so as to overlap a radial groove 271 whose end does not coincide with the notch 232 (the end is located between the notches 232 adjacent in the circumferential direction). (Diameter (outer diameter): 38.6 mm, length of through hole 26 in the longitudinal direction: 2.5 mm, length of through hole 26 in the lateral direction: 0.5 mm, width of radial groove 271 W ₂₇₁ : 1. 0 mm) was prepared.

Two 1-fluid nozzles (fan-shaped, spreading angle θ1: 15 °, washing water pressure: 0.3 MPa) are installed above the top plate 21, and the two 1-fluid nozzles are directed toward the center of the top plate 21. The cleaning water was sprayed for 30 seconds (top surface cleaning step of the first cleaning step). After that, a gap between the side wall 23 and the tamper evidence band 25 from two one-fluid nozzles (fan-shaped, spreading angle θ2: 15 °, washing water pressure: 0.3 MPa) located on the side of the side wall 23. Washing water was sprayed toward the surface for 30 seconds (side cleaning step of the first cleaning step).

After cleaning as described above, the synthetic resin cap 1 is attached to the top plate 21 and the inner plug 3 by the ATP wiping test method using an ATP measuring device (manufactured by Kikkoman Biochemifa, product name: Lumitester). The relative luminescence amount RLU between them and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the respective ATP amounts were obtained and evaluated. The results are shown in Table 1.

[Reference example 2]
With respect to the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 1 except that the top surface cleaning step was performed after the side surface cleaning step, the relative between the top plate portion 21 and the inner plug 3 The light emission amount RLU and the relative light emission amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the respective ATP amounts were obtained and evaluated. The results are shown in Table 1.

[Reference Example 3]
At the same time, the cleaning water is sprayed toward the center of the top plate 21 from two one-fluid nozzles (fan shape, spreading angle θ1: 15 °, cleaning water pressure: 0.3 MPa) located above the top plate 21. , From two 1-fluid nozzles (fan shape, spread angle θ2: 15 °, wash water pressure: 0.3 MPa) located on the side of the side wall 23 to the gap between the side wall 23 and the tamper evidence band 25. With respect to the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 1 except that the cleaning water was sprayed toward the surface and the cleaning time was set to 60 seconds, the relative between the top plate portion 21 and the inner plug 3 was set. The light emission amount RLU and the relative light emission amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the respective ATP amounts were obtained and evaluated. The results are shown in Table 1.

[Reference Example 4]
Regarding the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 1 except that only the top surface cleaning step was performed for 60 seconds and the side surface cleaning process was not performed, between the top plate portion 21 and the inner plug 3. The relative luminescence amount RLU and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the respective ATP amounts were obtained and evaluated. The results are shown in Table 1.

[Reference Example 5]
Regarding the synthetic resin cap 1 after cleaning in the same manner as in Example 1 except that only the side surface cleaning step was performed for 60 seconds and the top surface cleaning step was not performed, between the top plate portion 21 and the inner plug 3. The relative luminescence amount RLU and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the respective ATP amounts were obtained and evaluated. The results are shown in Table 1.

In Table 1, the “ATP amount mouth portion” is the ATP amount obtained from the measured value of the relative emission amount RLU between the side wall portion 23 and the mouth portion 11, and the ATP amount in Reference Example 1 is set to 100. The "ATP amount top plate portion" is the ATP amount obtained from the measured value of the relative luminescence amount RLU between the top plate portion 21 and the inner plug 3, and is the ATP amount of Reference Example 1. It is a relative value when the amount is 100.

From the results shown in Table 1, the top surface cleaning step of injecting cleaning water from above the top plate portion 21 of the synthetic resin cap 1 and the side surface cleaning step of injecting cleaning water from the side of the side wall portion 23 are performed separately. As a result, it was confirmed that the cereal decomposition product-containing effervescent beverage (beer) adhering between the top plate portion 21 and the inner plug 3 and between the side wall portion 23 and the mouth portion 11 can be effectively washed. It was.

Comparing Reference Example 1 and Reference Example 2, in Reference Example 2, washing water containing a cereal decomposition product-containing effervescent beverage adhering between the top plate portion 21 and the inner plug 3 by the top surface cleaning step However, it flows down between the side wall portion 23 and the mouth portion 11, but a part of the washing water remains between them, so that the amount of ATP between the side wall portion 23 and the mouth portion 11 becomes large. It is presumed that it has been closed. Therefore, it is considered that more effective cleaning can be performed by performing the top surface cleaning step first and then performing the side surface cleaning step.

Comparing Reference Example 1 and Reference Example 3, the cleaning effect is generally reduced in Reference Example 3. This is because when the side cleaning step and the top cleaning step are performed at the same time, the water flows derived from both steps interfere with each other inside the cap body 2, and the dilution and washing of the effervescent beverage containing cereal decomposition products proceed efficiently. It is presumed that this is not the case. Therefore, it is considered that more effective cleaning can be performed by performing the top surface cleaning step first and then performing the side surface cleaning step.

Comparing Reference Example 1 and Reference Example 4, it is clear that the space between the side wall portion 23 and the mouth portion 11 cannot be sufficiently cleaned only by the top surface cleaning step. Therefore, it is considered that more effective cleaning can be performed by separately performing the side surface cleaning process in addition to the top surface cleaning process.

Comparing Reference Example 1 and Reference Example 5, it seems that there is no big difference in the amount of ATP, but in Reference Example 5, the space between the top plate portion 21 and the inner plug 3 can be sufficiently cleaned. There wasn't. In Reference Example 1 and Reference Example 5, water-based red ink is adhered between the top plate portion 21 of the synthetic resin cap 1 and the inner plug 3, and the synthetic resin cap 1 is attached to the plastic bottle 10 for reference. It was washed in the same manner as in Example 1 and Reference Example 5, and the degree of coloring in the synthetic resin cap 1 after washing was visually observed. As a result, in Reference Example 5, mottled coloring was confirmed in the vicinity of the peripheral edge portion 22 of the top plate portion 21. Therefore, it is considered that the inside of the synthetic resin cap 1 can be cleaned as a whole by performing the top surface cleaning step and the side surface cleaning step separately.

[Reference Example 6]
Synthesis after cleaning in the same manner as in Reference Example 1 except that the 1-fluid nozzle in the top surface cleaning step was changed to a 1-fluid nozzle (cone, spread angle θ1: 15 °, cleaning water pressure: 0.3 MPa). For the resin cap 1, the relative luminescence amount RLU between the top plate portion 21 and the inner plug 3 and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the total amount of ATP obtained from each was measured. Was evaluated by. The results are shown in Table 2.

[Reference Example 7]
Synthetic resin after cleaning in the same manner as in Reference Example 1 except that the nozzle in the top surface cleaning step was changed to a one-fluid nozzle (conical, spreading angle θ1: 30 °, cleaning water pressure: 0.3 MPa). With respect to the cap 1, the relative light emission amount RLU between the top plate portion 21 and the inner plug 3 and the relative light emission amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the total amount of ATP obtained from each was calculated. evaluated. The results are shown in Table 2.

[Reference Example 8]
Same as Reference Example 1 except that the nozzle in the side cleaning process was changed to a two-fluid nozzle (fan type, spread angle θ2: 60 °, cleaning water pressure: 0.3 MPa, compressed air pressure: 0.5 MPa). The relative light emission amount RLU between the top plate portion 21 and the inner plug 3 and the relative light emission amount RLU between the side wall portion 23 and the mouth portion 11 were measured for the synthetic resin cap 1 after cleaning. It was evaluated by the total amount of ATP obtained from. The results are shown in Table 2.

The amount of ATP in Table 2 is a relative value when the total amount of ATP in Reference Example 1 is 100.
From the results shown in Table 2, it was confirmed that the cleaning effect can be improved by making the injection shape from the one fluid nozzle used in the top surface cleaning step conical (see FIG. 7). Further, it was confirmed that the cleaning effect can be further improved by injecting cleaning water using a two-fluid nozzle in the side surface cleaning step.

Further, in Reference Example 6 and Reference Example 7, after the water-based red ink is adhered between the top plate portion 21 of the synthetic resin cap 1 and the inner plug 3, and the synthetic resin cap 1 is attached to the PET bottle 10. , Washed in the same manner as in Reference Example 1. When the degree of coloring in the synthetic resin cap 1 after cleaning was visually observed, in Reference Example 6, coloring was confirmed in the vicinity of the peripheral edge portion 22 of the top plate portion 21. From this, it was confirmed that the cleaning effect can be further improved by setting the spread angle θ1 of the cleaning liquid jetted in a conical shape to 30 °.

[Comparative Example 1]
Except that the top surface cleaning process (10 seconds), the side surface cleaning process (10 seconds), the top surface cleaning process (10 seconds), the side surface cleaning process (10 seconds), and the top surface cleaning process (10 seconds) were performed in this order. For the synthetic resin cap 1 that has been washed in the same manner as in Reference Example 8, the relative light emission amount RLU between the top plate portion 21 and the inner plug 3 and the relative light emission amount RLU between the side wall portion 23 and the mouth portion 11. Was measured and evaluated by the total amount of ATP obtained from each. The results are shown in Table 3.

[Comparative Example 2]
About the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8 except that the top surface cleaning step (20 seconds), the side surface cleaning step (20 seconds), and the top surface cleaning step (20 seconds) were performed in this order. The relative luminescence amount RLU between the top plate portion 21 and the inner plug 3 and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured and evaluated by the total amount of ATP obtained from each. The results are shown in Table 3.

[Comparative Example 3]
After blowing high-pressure air (air pressure: 0.5 MPa) from the side of the side wall portion 23 of the synthetic resin cap 1 for 10 seconds (second cleaning step), a top surface cleaning step (30 seconds) and a side surface cleaning step (30 seconds). For the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8, the relative light emission amount RLU between the top plate portion 21 and the inner plug 3 and the side wall portion 23, except that the steps were performed in this order (for 20 seconds). The relative luminescence amount RLU with the mouth portion 11 was measured, and the total amount of ATP obtained from each was evaluated. The results are shown in Table 3.

[Comparative Example 4]
Only high-pressure air (air pressure: 0.5 MPa) was blown from the side of the side wall portion 23 of the synthetic resin cap 1 for 10 seconds (second cleaning step), and the top surface cleaning step and the side surface cleaning step were not performed. Except for the above, for the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8, the relative light emission amount RLU between the top plate portion 21 and the inner plug 3 and the relative between the side wall portion 23 and the mouth portion 11. The amount of luminescence RLU was measured and evaluated by the total amount of ATP obtained from each. The results are shown in Table 3.

[Example 1]
After the first cleaning step in which the top cleaning step (30 seconds) and the side cleaning step (20 seconds) were performed in this order, high-pressure air (fan shape, spreading angle: 15) from the side of the side wall portion 23 of the synthetic resin cap 1. The top plate 21 and the inner plug 3 of the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8 except that the air pressure (0.5 MPa) was sprayed for 10 seconds (second cleaning step). The relative luminescence amount RLU between the two and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the evaluation was made based on the total amount of ATP obtained from each. The results are shown in Table 3.

[Example 2]
After the first cleaning step in which the top surface cleaning step (10 seconds), the side surface cleaning process (10 seconds), and the top surface cleaning step (10 seconds) are performed in this order, high pressure is applied from the side of the side wall portion 23 of the synthetic resin cap 1. About the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8 except that air (fan shape, spreading angle: 15 °, air pressure: 0.5 MPa) was blown for 10 seconds (second cleaning step). The relative luminescence amount RLU between the top plate portion 21 and the inner plug 3 and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured and evaluated by the total amount of ATP obtained from each. The results are shown in Table 3.

[Example 3]
After the first cleaning step in which the top cleaning step (5 seconds), the side cleaning step (5 seconds), and the top cleaning step (5 seconds) were performed in this order, high pressure was applied from the side of the side wall portion 23 of the synthetic resin cap 1. About the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8 except that air (fan shape, spreading angle: 15 °, air pressure: 0.5 MPa) was blown for 5 seconds (second cleaning step). The relative luminescence amount RLU between the top plate portion 21 and the inner plug 3 and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured and evaluated by the total amount of ATP obtained from each. The results are shown in Table 3.

[Example 4]
After the first cleaning step in which the top surface cleaning step (3 seconds), the side surface cleaning process (3 seconds), and the top surface cleaning step (3 seconds) are performed in this order, high pressure is applied from the side of the side wall portion 23 of the synthetic resin cap 1. About the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8 except that air (fan shape, spreading angle: 15 °, air pressure: 0.5 MPa) was blown for 3 seconds (second cleaning step). The relative luminescence amount RLU between the top plate portion 21 and the inner plug 3 and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured and evaluated by the total amount of ATP obtained from each. The results are shown in Table 3.

[Example 5]
After the first cleaning step in which the top cleaning step (5 seconds) and the side cleaning step (5 seconds) were performed in this order, high-pressure air (fan shape, spreading angle: 15) from the side of the side wall portion 23 of the synthetic resin cap 1. The top plate 21 and the inner plug 3 of the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8 except that the air pressure (0.5 MPa) was sprayed for 5 seconds (second cleaning step). The relative luminescence amount RLU between the two and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the evaluation was made based on the total amount of ATP obtained from each. The results are shown in Table 3.

[Example 6]
After the first cleaning step in which the top cleaning step (3 seconds) and the side cleaning step (3 seconds) were performed in this order, high-pressure air (fan shape, spreading angle: 15) from the side of the side wall portion 23 of the synthetic resin cap 1. The top plate 21 and the inner plug 3 of the synthetic resin cap 1 after cleaning in the same manner as in Reference Example 8 except that (°, air pressure: 0.5 MPa) was sprayed for 3 seconds (second cleaning step). The relative luminescence amount RLU between the two and the relative luminescence amount RLU between the side wall portion 23 and the mouth portion 11 were measured, and the evaluation was made based on the total amount of ATP obtained from each. The results are shown in Table 3.

The amount of ATP in Table 3 is a relative value when the total amount of ATP in Reference Example 8 is 100.
From the results shown in Table 3, it was confirmed that the cleaning effect can be improved by performing each of the top surface cleaning process and the side surface cleaning process for about 20 to 30 seconds rather than switching a plurality of times in a short time (Example). 1-6, Reference Example 8, Comparative Examples 1 and 2).

Further, by performing an air blowing step after the top surface cleaning step and the side surface cleaning step, that is, by performing the second cleaning step after the first cleaning step, cleaning can be performed in a shorter time, and moreover, cleaning is possible. It was confirmed that the effect was excellent (Examples 1 to 6, Reference Example 8 and Comparative Examples 1 to 4). Further, in Examples 1 to 6 in which the second cleaning step was performed after the first cleaning step, a sufficient cleaning effect was obtained in an absolute sense. When the air spraying step is not performed, after the first washing step (top cleaning step and side cleaning step), a part of the washing water containing the effervescent beverage containing grain decomposition products is inside the synthetic resin cap 1 (top plate portion). It may remain between 21 and the inner plug 3 or between the side wall portion 23 and the mouth portion 11), but by performing the air blowing step, the washing water (grains) remaining in the synthetic resin cap 1 It is considered that an excellent cleaning effect can be obtained because the cleaning water containing the decomposition product-containing effervescent beverage) can be blown off and removed. Further, only in the first cleaning step (Reference Examples 1 to 8 and Comparative Examples 1 and 2) and only in the air blowing step (second cleaning step) (Comparative Example 4), the cleaning effect is as good as when these steps are combined. It became clear that it could not be obtained.

1 ... Synthetic resin cap 2 ... Cap body 21 ... Top plate 22 ... Peripheral part 23 ... Side wall part 26 ... Through hole 271 ... Radial groove part 272 ... Circumferential groove part 3 ... Inner plug 4 ... Grain decomposition product-containing effervescent beverage 10 … Plastic bottle (beverage container)
11 ... mouth

Claims (8)

A method for producing a packaged beverage obtained by filling a beverage container with a sparkling beverage containing a cereal decomposition product.
A filling step of filling the beverage container with the cereal decomposition product-containing effervescent beverage, and
A forming step of foaming the liquid level of the cereal decomposition product-containing effervescent beverage in the beverage container from the mouth of the beverage container.
A sealing step of attaching a synthetic resin cap to the mouth of the beverage container with the liquid level foamed, and
Including a cleaning step of cleaning the beverage container to which the synthetic resin cap is attached.
The cleaning process includes a first cleaning step of jetting a cleaning liquid to the synthetic resin cap, after the first cleaning step, seen including a second cleaning step of jetting a cleaning gas into the synthetic resin cap,
The synthetic resin cap is attached to a cap body having a top plate portion and a side wall portion that continuously hangs from the peripheral edge portion of the top plate portion, and the cap body, and covers the mouth portion of the beverage container. It is provided with an inner plug, and a through hole is formed in the top plate portion.
The first cleaning step includes a top surface cleaning step of injecting the cleaning liquid from above the top plate portion toward the top plate portion and a side surface cleaning step of injecting the cleaning liquid from the side of the side wall portion toward the side wall portion. Including cleaning process
A method for producing a packaged beverage, wherein the top surface cleaning step and the side surface cleaning step are performed as separate steps from each other . The method for producing a packaged beverage according to claim 1, wherein in the first cleaning step, the side surface cleaning step is performed after the top surface cleaning step. In the side cleaning process, according to claim 1 or 2, characterized in that injecting the cleaning liquid toward the 2 position of approximately 180 ° to the side wall portion of the synthetic resin cap as viewed in a plan view of the beverage container The method for producing a packaged beverage according to. The container packing according to any one of claims 1 to 3, wherein in the side cleaning step, a gas-liquid mixed mist obtained by mixing the cleaning liquid and the pressurized gas is injected using a two-fluid spray nozzle. Beverage manufacturing method. According to any one of claims 1 to 4 , in the side cleaning step, the cleaning liquid is sprayed so as to spread in a substantially fan shape having a spreading angle of 30 to 120 ° in a plan view of the beverage container. The method for producing a packaged beverage according to the description. Prior SL top wash step, according to any one of claims 1 to 5, characterized in that injecting the cleaning liquid toward the top plate portion of the synthetic resin cap with 1 fluid spray nozzle A method for manufacturing a packaged beverage. Any of claims 1 to 6 , wherein in the top surface cleaning step, the cleaning liquid is sprayed so as to spread in a substantially conical shape having a spreading angle of 15 to 90 ° in a plan view of the beverage container. The method for producing a packaged beverage described in Crab. Any of claims 1 to 7 , wherein in the second cleaning step, the cleaning gas is injected so as to spread in a substantially fan shape with a spreading angle of 15 to 90 ° in a plan view of the beverage container. The method for producing a packaged beverage described in Crab.

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