Intraoral reaction type beverage container, carbonated beverage production system, and method for manufacturing beverage container

The two-chamber container with citric acid and sodium bicarbonate mixing in the mouth generates fresh carbonation, addressing static drinking issues and maintaining quality with balanced outflow, suitable for existing production lines.

JP2026032563APending Publication Date: 2026-02-26冈本 崇彦
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Patent Information

Application Number
JP2025185269
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-11-04
Publication Date
2026-02-26

AI Technical Summary

Technical Problem

Traditional carbonated beverages lose carbonation over time and provide a static drinking experience, lacking the dynamic taste change that occurs as one drinks, and existing two-liquid mixing containers do not effectively generate carbon dioxide in the consumer's mouth.

Method used

A two-chamber beverage container with independent flow paths for acidic and alkaline solutions that mix in the mouth, generating carbon dioxide upon consumption, using citric acid and sodium bicarbonate, and a crimped structure for airtight storage and balanced outflow.

Benefits of technology

Provides a dynamic drinking experience with fresh carbonation and temporal taste transition, maintaining quality over time with optimized flow balance and airtight storage, suitable for existing production lines.

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Abstract

To provide a beverage system capable of generating fresh carbonic acid at the time of drinking and enjoying dynamic taste change.SOLUTION: An acidic liquid and an alkaline liquid are separately held in a container of a two chamber structure, and when drinking, the acidic liquid and the alkaline liquid simultaneously flow out from independent flow passages to cause a chemical reaction in the oral cavity. The container is formed by crimping two half container bodies, and the cap portion (spout portion) is a structure having a double semicircular spout.EFFECT: Carbon dioxide gas is generated at the moment of opening, and transition between a refreshing feeling and a taste can be experienced. Low manufacturing cost and applicable to existing PET bottle lines SELECTED DRAWING: Figure 2
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Description

[Technical Field]

[0001] The present invention relates to a beverage container and a beverage production system, and in particular to an oral reaction type carbonated beverage production system that stores two types of liquid separately and simultaneously flows them out during drinking, causing them to mix in the mouth, thereby generating carbon dioxide gas and providing a dynamic change in taste and a refreshing sensation, as well as a container structure and manufacturing method therefor. [Background technology]

[0002] Traditional carbonated drinks are made by dissolving carbon dioxide gas in liquid under high pressure and then sealing it. This method has problems such as carbonation fading and flavor deterioration after opening. In addition, consumers only get a static drinking experience, and are unable to enjoy the changing taste experience that occurs as they drink. On the other hand, it is well known that mixing citric acid and sodium bicarbonate (baking soda) produces carbon dioxide, but the idea of ​​turning this into a beverage and using a chemical reaction to generate carbon dioxide when consumed had not been thought of before. Conventional two-liquid mixing containers have been designed to mix the liquids internally or just before the discharge port, but it is not common for them to cause a mixing reaction in the consumer's own mouth. Summary of the Invention [Problem to be solved by the invention]

[0003] With existing carbonated water, the carbon dioxide gas escapes over time, naturally reducing the freshness, but this invention solves this problem. The present invention aims to provide an unprecedented dynamic drinking experience by simultaneously supplying two types of liquid and causing a mixing reaction in the drinker's mouth, thereby generating fresh carbon dioxide gas. Another object of the present invention is to provide a container structure and manufacturing method that can maintain quality for a long period of time by storing liquids separately, while optimizing the outflow balance. [Means for solving the problem]

[0004] According to the present invention, the above-mentioned problems are solved by having the following configuration. This beverage container has a two-chamber structure that can contain two different liquids, and is equipped with independent flow paths extending from each chamber to the cap (drinking spout), so that when drunk, both liquids flow out simultaneously in equal amounts and are mixed in the mouth. The liquids are an acidic aqueous solution (e.g., citric acid water) and an alkaline aqueous solution (e.g., sodium bicarbonate aqueous solution), which generate carbon dioxide gas when mixed, creating a fizzy drink-like sensation. The cap (drinking spout) has two independent flow outlets arranged at a 90-degree angle to the surface of the spout, allowing the two liquids to be introduced into the mouth simultaneously when drinking in a natural posture. Furthermore, the container body is manufactured by placing two half-container bodies, each symmetrical in shape, opposite each other in a heated and softened state, and then crimping them together to form a single unit. This crimped portion functions as a separating wall. In the crimping step, the cap portions (drinking mouth portions) of both half-container bodies are also welded at the same time, forming a double semicircular drinking mouth shape. [Effects of the Invention]

[0005] According to the present invention, a chemical reaction occurs when drinking, allowing the user to enjoy freshly generated carbonation immediately after opening. Furthermore, the user can initially experience a sour taste due to the effect of citric acid, followed by a subtle effervescent sensation, resulting in a temporal taste transition. Furthermore, by optimizing the flow path cross section and angle, the two liquids can flow out evenly, achieving stable carbon dioxide generation.The structure is simple yet functional, and can be easily applied to existing PET bottle production lines. Furthermore, because the half-container is formed by crimping, the inner walls are highly airtight, preventing liquid contamination and oxidation. This improves storage stability and has technological value for beverage manufacturers, creating a new product category. By proposing a novel new lifestyle, we can bring innovation to the beverage industry. [Brief explanation of the drawings]

[0006] [Figure 1] Diagram of the two vessels before the separation wall was formed [Figure 2] Diagram of a container including a separation wall that has been compressed in a heat-softened state [Figure 3] Top view of the cap (mouth) that allows two liquids to flow out simultaneously DETAILED DESCRIPTION OF THE INVENTION

[0007] Fig. 1 shows two containers 1 and 2 in the stage prior to constructing the two-liquid mixing container according to the present invention, i.e., before the formation of a separating wall. Both containers are PET bottles with the same semicircular cross section, with a normal cylindrical outer surface and a flat inner surface that forms a joining surface for crimping them together in a later process. Both containers 1 and 2 are formed using the same mold or a mold with a symmetrical shape (or an asymmetrical shape is also acceptable), and are joined as shown in Fig. 2 when the area excluding the cap portion (drinking spout) is in a softened state. Figure 2 shows a container structure including a separation wall that is crimped together in a heat-softened state. By heat welding the flat surfaces of both containers together, a single container with the interior divided into two compartments is obtained. This allows each compartment to store different liquids, such as citric acid water and sodium bicarbonate water, which are mutually reactive liquids. The separation wall 4 formed by the inner wall of the container body 3 completely prevents the liquids from mixing, ensuring stability during transportation and storage. Considering the aspects of "adhesion strength," "airtightness," and "food safety," existing PET is used as the material and high-frequency welding technology is used. If these cannot be used for some reason, alternative methods include ultrasonic welding, infrared welding, and adhesive sheets. Figure 3 is a top view of the cap (tap) structure attached to the container of the present invention. A fastener 5 covers the outer periphery of the cap (tap) and secures the two flow paths, and each flow path is formed by a separate chamber 6 and chamber 7. This structure allows both liquids to flow out simultaneously when the container is tilted to drink, and they are mixed for the first time in the drinker's mouth. The cross-sectional area and angle of each flow path in the cap (tap) are set so that both liquids flow out evenly. The shape of the cap (tap) is smooth, with semicircles lined up on either side, to fit naturally to the lips. In an advanced embodiment, an elastic member or variable resistance structure for adjusting the flow rate can be provided in each or either of the flow paths to balance the outflow rates of both liquids. This elastic member is made of an elastic material, such as silicone rubber, elastomer, or flexible resin, and is arranged in a ring or film shape in part of the flow path. It deforms slightly when exposed to liquid pressure during drinking, automatically adjusting the flow rate. This ensures that both liquids flow out in roughly equal amounts, regardless of the liquid's viscosity or the angle of the container. In this specification, the variable resistance structure is defined as a mechanism that mechanically adjusts the flow rate. Variable resistance structures can include a sliding valve element that allows fine adjustment of the flow path cross section, a screw-type adjustment mechanism, or a flexible nozzle that allows for variable opening diameter. These structures make it possible to set the optimal flow rate ratio according to the liquid characteristics during manufacturing or during an adjustment process before shipping. Such a flow rate adjusting means has the effect of controlling the mixing ratio of the two liquids at the time of drinking with high precision, while maintaining a simple mechanical structure, and stabilizing the amount of carbon dioxide produced and the balance of taste. [Industrial Applicability]

[0008] This invention can be applied to a wide range of fields, including soft drinks, sports drinks, health drinks, and beverages for educational experiments. It proposes a new lifestyle that incorporates entertainment elements. It can be used as a means to promote smooth communication between people, which is becoming increasingly rare. It contributes to the provision of highly palatable soft drinks. Furthermore, since existing blow molding equipment can be used on the production line, industrial implementation is easy and the invention provides new added value to the beverage market.

Claims

1. A beverage container having a two-chamber structure for containing two types of liquids, The device has a flow path extending from the first chamber and a flow path extending from the second chamber, each of which extends from the chamber to the cap portion (the drinking spout portion), The container is designed so that the cross-sectional area or outlet angle of the flow path is set so that two types of liquids flow out simultaneously when tilted, A beverage container characterized by allowing the contents to be mixed naturally in the mouth of a drinker.

2. 2. The beverage container of claim 1, wherein the liquids are an acidic aqueous solution and an alkaline aqueous solution, and generate carbon dioxide gas when mixed.

3. 3. The beverage container according to claim 1, wherein at least one of the flow paths is provided with an elastic member or a variable resistance structure for adjusting the flow rate.

4. Using the beverage container according to any one of claims 1 to 3, By simultaneously releasing two types of liquid during drinking, a mixed reaction occurs in the mouth. A beverage preparation system characterized by chemically generating carbon dioxide gas.

5. A method for manufacturing a beverage container having a two-chamber structure for containing two types of liquid, Two half-container bodies are molded respectively, The two half-container bodies are placed facing each other in a heat-softened state, The opposing surfaces are pressed together to form a single unit. A method for manufacturing a beverage container, comprising forming a separating wall.

6. 6. A method for manufacturing a beverage container according to claim 5, wherein each of the two half-container bodies is obtained by blow molding a preform in a mold.

7. The method for manufacturing a beverage container according to claim 5 or 6, characterized in that in the integrating step, the cap portions (drinking spout portions) of the two half-container bodies are welded together at the same time as being crimped together, thereby forming a double semicircular drinking spout shape at the upper end.

8. 7. The method for manufacturing a beverage container according to claim 5, wherein the separating wall is integrally formed by welding the crimped surfaces and functions as a partition that prevents two types of liquid from mixing with each other.

9. 7. A method for manufacturing a beverage container according to claim 5 or 6, characterized in that after the integration process, the entire container is cooled to stabilize its shape, and then the finished product is obtained through trimming, cap screw formation, and inspection processes.

10. A method for manufacturing a beverage container as described in either of claims 5 or 6, characterized in that the double semicircular shape of the cap portion (drinking spout portion) is connected to independent flow paths, and has a structure in which both liquids flow out simultaneously and mix in the mouth when drinking.