Solid bath additive
The solid bath agent addresses the lack of interestingness in existing bath agents by incorporating a toy that changes the liquid's appearance and reveals itself in multiple stages, offering an engaging and interactive play experience.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- OAK INT CO LTD
- Filing Date
- 2026-04-01
- Publication Date
- 2026-06-11
AI Technical Summary
Existing bath agents with toys lack interestingness and engaging play value.
A solid bath agent with a soluble main body containing a toy, designed to change the liquid's appearance in multiple stages through dissolution, including color changes, foaming, and revealing the toy after dissolution, with optional auxiliary bodies that enhance the play experience.
Provides a highly appealing and engaging bath experience by revealing the toy in a gradual and mysterious manner, enhancing user interaction and enjoyment.
Smart Images

Figure 2026095618000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a solid bath agent.
Background Art
[0002] Conventionally, as a bath agent, Patent Document 1 discloses that parts constituting a finger figure are buried inside a water-soluble solid bath agent. The parts constituting the finger figure are connectable, one having a convex portion and the other having a concave portion, and the finger cap body has a cylindrical structure with an opening. Further, a bath agent with a toy is disclosed to be packaged together with a card related to the finger figure.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In Patent Document 1, it is a bath agent with a toy that can communicate by using the parts coming out of the bath agent as a finger figure. However, the toy coming out of the bath agent only plays as a finger figure and has problems in terms of interestingness.
[0005] An object of the present invention is to provide a solid bath agent with high interestingness.
Means for Solving the Problems
[0006] A solid bath agent according to one aspect of the present invention is a solid bath agent including a soluble main body portion of any one of a plurality of types and a toy included in the main body portion. Before dissolution, the main body portion is configured such that the toy is not visible from the outside, and after the start of dissolution, the main body portion is configured to be able to change the liquid obtained by dissolving the main body portion in multiple stages.
Effects of the Invention
[0007] According to the present invention, it is possible to provide a highly appealing solid bath additive. [Brief explanation of the drawing]
[0008] [Figure 1] This is a perspective view of a first type of solid bath additive, which is a solid bath additive according to one embodiment of the present invention. [Figure 2] Figure 1 is a schematic cross-sectional view of a solid bath additive. [Figure 3] Figure 1 is an explanatory diagram showing the state when a solid bath additive is added to bathwater. [Figure 4] This is an explanatory diagram showing the state of a doll's body floating on the surface of the water. [Figure 5] This is a schematic cross-sectional view of the second type of solid bath bomb, which contains doll-shaped figures modeled after other characters. [Figure 6] Figure 5 is an explanatory diagram showing the state in which the doll-shaped body floats on the surface of the water. [Figure 7] This is an explanatory diagram showing an example of how to play with solid bath bombs when they are in a foamy state. [Figure 8] This is a schematic cross-sectional view of the third type of solid bath bomb, which contains doll-shaped figures modeled after other characters. [Figure 9] Figure 8 is an explanatory diagram showing the state in which the doll-shaped body floats on the surface of the water. [Modes for carrying out the invention]
[0009] The following describes an embodiment of a solid bath additive representing one aspect of the present invention, with reference to the figures.
[0010] (First aspect) Figure 1 is a perspective view of the first type of solid bath additive 1. Figure 2 is a schematic cross-sectional view of the solid bath additive 1 shown in Figure 1. As shown in Figure 1, the solid bath additive 1 comprises a water-soluble body part 10 with a spherical surface 10s, and a toy doll body 20 enclosed in the internal space SP of the body part 10. The doll body 20, which is modeled after a specific character, is held in place by the water-soluble solid body part 10, so that when it is placed in a liquid, such as bath water 50 (see Figure 3), the body part 10 dissolves and the doll body 20 is revealed.
[0011] The doll body 20 is made of a relatively flexible, water-insoluble material such as synthetic resin or rubber, and is designed to float in water. However, the main body 10 is made of a material that does not float in water, and the solid bath additive 1 is designed to sink in water.
[0012] As shown in Figure 2, for example, it has a two-layer structure consisting of an outer layer 11 on the surface 10s side and an inner layer 12 inside it. The outer layer 11 contains a dye that produces a first color when dissolved, and the inner layer 12 contains other dyes that produce a different color from the first color. Therefore, when the solid bath additive 1 is added to the bath water 50, as will be described later, it is configured so that the color at the initial stage when it begins to dissolve in the bath water 50 is different from the color afterward.
[0013] Figure 3 is an explanatory diagram showing the state after adding solid bath additive 1 to bath water 50. As described above, the solid bath additive 1 is constructed so that its main body 10 is heavy enough to sink in water. As a result, when the solid bath additive 1 is placed in the bathwater 50, it sinks to the bottom 61 of the bathtub, for example, along with the floating doll body 20, as shown in Figure 3. In this submerged state, the main body 10 dissolves from its surface 10s.
[0014] The components of the first color that emerge from the surface 10s of the main body 10 rise to the surface of the water 50a along with the bubbles 18. Then, as the first stage, the water surface 50a changes to the first color. After the outer layer 11 dissolves, as the second stage, the inner layer 12 dissolves, revealing the second color and further changing the color of the bath water 50.
[0015] FIG. 4 is an explanatory view showing the state in which the humanoid 20 floats on the hot water surface 50a. In the first stage when the solid bath agent 1 starts to dissolve, it becomes the first color C1, and then, before the humanoid 20 floats, it changes to the second color C2 in the second stage. After the color of this second color C2 appears, in the final stage, as shown in FIG. 4, the humanoid 20 floats. At this time, the humanoid 20 floats together with the remaining part 12a of the inner layer 12. Therefore, as shown in the drawing, the remaining part 12a floats around the humanoid 20, and the second color C2 continues to dissolve out from this remaining part 12a.
[0016] In this way, from the state where it is not known which character it is (the state before the humanoid 20 floats), before and after the timing when the humanoid 20 floats, the appearance (floating) of the humanoid 20 is produced in the two-color color state where the first color C1 and the second color C2 are not fully mixed as shown in the drawing.
[0017] In the first aspect, the main body part 10 is formed with an internal space SP, but it is not limited to this, and an aspect where the inner layer 12 is filled up to the internal space SP (that is, an aspect where the inner layer 12 is formed in a state of being in close contact with the periphery of the humanoid 20) may also be used. In the case of this aspect, the time from the start of dissolution of the main body part 10 until the toy 20 becomes visible can be lengthened, and the risk of damage to the main body part 10 before dissolution can be reduced.
[0018] (Second Aspect) FIG. 5 is a schematic cross-sectional view of the second type of solid bath agent 1 in which a humanoid 20 imitating another character is stored. In the second type of solid bath agent 1 shown in FIG. 5, the stored humanoid 20 is different from that shown in FIG. 2. Also, in the configuration of the main body part 10, it has a single-layer structure instead of a two-layer structure. Further, the components contained in the main body part 10 include a pigment component of the third color C3 and a foaming component. For example, when the main body part 10 dissolves, it also appropriately contains a foaming component such as carbonic acid that generates bubbles, and as its components, for example, it contains at least sodium carbonate, citric acid, and sodium sulfate.
[0019] Figure 6 is an explanatory diagram showing the state in which the doll body 20 is floating on the surface of the molten metal 50a. In the solid bath additive 1 of this embodiment, once the main body 10 begins to dissolve and a predetermined time has elapsed, the bath water 50 is stained with the third color C3 and a certain amount of bubbles 10b are formed. However, if no operation is performed to form a large amount of bubbles 10b, the doll body 20 will float to the surface, as shown in Figure 6, with the doll body visible. In this case, the doll body 20 can be hidden in the bubbles by adding hot water through the tap 80 or by applying appropriate vibration (stirring) to mix air into the water surface 50a by hand.
[0020] Furthermore, if, for example, an operation such as mixing air into the water surface 50a is performed before the doll body 20 floats to the surface 50a, the water surface 50a will be covered with bubbles 10b, so even if the doll body 20 floats to the surface, it will not be possible to see the doll body 20. As a result, it is possible to create a state for a predetermined period of time in which it is completely impossible to know when the doll body 20 floated to the surface or what kind of character it is.
[0021] Figure 7 is an explanatory diagram showing an example of how to play with the solid bath additive 1 when it has foamed up. Bathwater 50 has the color of the third color C3 due to the dissolved color components, while bubbles 10b are white. This allows you to enjoy the color contrast between the color of bathwater 50 and the white of bubbles 10b.
[0022] As mentioned above, if many bubbles 10b are formed before the doll body 20 floats to the surface, the floating doll body 20 will be covered by the bubbles 10b and cannot be seen. In this state, one can enjoy playing by feeling around in the bathwater 50 (from the bottom) to find the doll body 20, or by using one's hand 70 to move the bubbles 10b aside from above to find the doll body 20, as shown in Figure 7.
[0023] (Third aspect) Figure 8 is a schematic cross-sectional view of the third type of solid bath bomb 1, which contains doll bodies 20 modeled after other characters. In the third type of solid bath additive 1 shown in Figure 8, the internal space SP contains a doll body 20 as well as a sub-body part 30. Also, in this embodiment, similar to the first embodiment, the main body part 10 has a two-layer structure consisting of an outer layer 11 and an inner layer 12. The outer layer 11 contains a pigment component of the fourth color C4, and the inner layer 12 contains a pigment component of the fifth color C5.
[0024] Numerous sub-body parts 30 are provided, each made of a mineral such as mica, and are arranged around the doll body 20 in the internal space SP. The sub-body parts 30 are formed, for example, in a star shape and are configured to be large enough to decorate the area around the doll body 20.
[0025] Figure 9 is an explanatory diagram showing the state in which the doll body 20 is floating on the surface of the molten metal 50a. When the main body 10 of this embodiment is placed in the bathwater 50, it sinks into the bathwater 50, for example, as shown in Figure 3. Then, as the outer layer 11 and inner layer 12 of the main body 10 dissolve sequentially, the bathwater 50 is dyed with the fourth color C4 and the fifth color C5. Subsequently, as shown in Figure 9, the doll body 20 floats to the surface, and the sub-body part 30 also floats to the surface. In this state, when the doll body 20 and the sub-body part 30 first float to the surface, the fourth color C4 and the fifth color C5 have not yet completely mixed on the surface of the water 50a, and as shown in Figure 9, the area around the doll body 20 is decorated by the sparkling reflection of these two colors and the sub-body part 30 due to the fluctuations of the surface of the water 50a. Furthermore, since the sub-body part 30 is made of mica, it dissolves into the bathwater 50 after a predetermined amount of time has elapsed.
[0026] As described above, in the solid bath additive 1 of the above embodiment, the main body 10 dissolves to cause a first type of change in the color of the bath water 50 (liquid) to change between a first and second color, a second type of change in which foaming occurs through operations such as stirring, and a third type in which the auxiliary body 30 (mineral fragments) floats in the bath water 50, thereby diversifying the presentation when the doll body 20 emerges from inside the main body 10.
[0027] Furthermore, as time passes after the main body 10 is placed in the bathwater 50, and the main body 10 shrinks and the appearance of the doll body 20 approaches, the color of the bathwater 50 can change, or bubbles can be generated, creating a special effect.
[0028] Furthermore, in the solid bath additive 1 of the above embodiment, the main body 10 is spherical, allowing it to be rolled around for play.
[0029] Furthermore, in the second type of solid bath additive 1, the foaming component of the main body 10 can be made to generate bubbles by stirring or vibrating during or after dissolution, so that the doll body 20 floating in the bath water 50 can be buried in the bubbles, providing a more mysterious way to enjoy the product by allowing users to imagine what the character is.
[0030] Furthermore, in the third type of solid bath additive 1 according to the above embodiment, the dissolution of the main body 10 reveals a secondary body 30 made of minerals that can float in the bathwater 50, making the bathwater 50 sparkle and creating the effect of a doll 20 floating on the surface 50a of the water. In addition, since the secondary body 30 is made of minerals that can dissolve in water, it requires no cleanup and is easy to use.
[0031] Although embodiments of the present invention have been described above, the present invention can be modified as appropriate within the scope of its technical concept. For example, in the above embodiment, the solid bath additive 1 is a spherical body part 10, but it is not limited to this configuration, and may be configured in various shapes such as octahedron, hexahedron, tetrahedron, etc.
[0032] Furthermore, although the configurations of the second type (bubble-generating type) and the third type (mica-containing type) of solid bath additive 1 were described as separate configurations in the above embodiment, the invention is not limited to this, and a configuration comprising both the second and third types simultaneously is also possible.
[0033] Furthermore, in the above embodiment, the solid bath additive 1 is configured to sink in water, but it is not limited to this configuration and may float in water.
[0034] As described above, this specification contains the following information:
[0035] (1) It is a solid bath additive, A main body that can dissolve one of several types, The toy enclosed within the main body is provided, The main body is configured to make the toy invisible from the outside before it dissolves, and after dissolution begins, the liquid in which the main body has dissolved is configured to change in multiple stages.
[0036] (2) (1) The solid bath additive described above, The above-mentioned main body is configured to change the liquid being dissolved within it in multiple stages, thus forming a solid bath additive.
[0037] (3) A solid bath additive as described in (1) or (2), The above-mentioned main body is configured to allow the liquid obtained by dissolving the main body to change between a first-stage state and a second-stage state, in the form of a solid bath additive.
[0038] (4) (3) A solid bath additive as described above, The main body is configured to change from the first configuration to the second configuration after a predetermined time has elapsed, and is a solid bath additive.
[0039] (5) A solid bath additive described in any one of (1) to (4), The main body is configured to allow the toy to be visible after dissolution has begun, and is a solid bath additive.
[0040] (6) A solid bath additive described in any one of (1) to (5), The main body of the solid bath additive is configured to shrink in size as it dissolves in the liquid.
[0041] (7) A solid bath additive described in any one of (1) to (6), The main body described above is configured to have a rotatable outer shape before being dissolved in the liquid described above, and is a solid bath additive.
[0042] (8) A solid bath additive described in any one of (1) to (7), A solid bath additive in which, when the main body is of type 1 of several types, the color of the liquid obtained by dissolving the main body can be changed between a first color and a second color.
[0043] (9) (8) A solid bath additive as described above, The main body of the solid bath additive is configured such that, when the dissolved liquid becomes the first color, it changes to a second color different from the first color after a predetermined time has elapsed.
[0044] (10) A solid bath additive described in any one of (1) to (9), The main body described above, when it is the second of several types, is configured to change the liquid from a non-bubble-generating state to a bubble-generating state, in the case of a solid bath additive.
[0045] (11) (10) A solid bath additive as described above, The main body is configured such that, when the liquid in which the main body has dissolved is in a non-bubble state, it will enter a bubble-generating state under the condition of an operation on the liquid.
[0046] (12) (11) A solid bath additive as described above, The above operation is at least one of the operations of stirring the above liquid and applying vibration, a solid bath additive.
[0047] (13) A solid bath additive described in any one of (10) to (12), The main body described above is a solid bath additive configured such that, while in a foam-generating state, the foam disappears after a predetermined time has elapsed.
[0048] (14) A solid bath additive described in any one of (1) to (13), The main body is configured to further contain a sub-body, The above-mentioned auxiliary part is configured to float in the above-mentioned liquid upon dissolution of the above-mentioned main part, and is a solid bath additive.
[0049] (15) (14) A solid bath additive as described above, The main body is configured to enclose the auxiliary body around the toy, and is a solid bath additive.
[0050] (16) A solid bath additive as described in (14) or (15), The above-mentioned auxiliary part is configured to be soluble in the above-mentioned liquid after the above-mentioned main part has dissolved, in a solid bath additive.
[0051] (17) A solid bath additive as described in any one of (14) to (16), A solid bath additive in which, when the main body is of the third type among several types, the auxiliary body is configured to change from a non-floating state to a floating state as the main body dissolves.
[0052] (18) A solid bath additive described in any one of (14) to (17), The above-mentioned auxiliary component is a mineral, a solid bath additive.
[0053] (19) A solid bath additive described in any one of (1) to (18), The toy described above is a doll, The above-mentioned doll-shaped body is a solid bath additive that is designed to float after the main body has dissolved.
[0054] (20) (19) A solid bath additive as described above, The above-mentioned doll-shaped body is constructed to be insoluble by the above-mentioned liquid, and its external shape differs depending on the type, and is a solid bath additive. [Explanation of Symbols]
[0055] 1. Solid bath additive 10 Main body 10b foam 20 Doll body (toy) 30 Minor body part 50 Bathwater (solution) 50a Surface of the solution 60 Bathtub C1 1st color C2 2nd color C3 3rd color C4 4th color C5 5th color
Claims
1. It is a solid bath additive, A main body having an internal storage space and being soluble in liquid, The doll body housed in the storage space of the main body, The doll body is housed in the storage space of the main body, and in response to the melting of the main body It comprises a number of sub-parts configured to be soluble, The main body has a two-layer structure consisting of an outer layer on the surface side and an inner layer on the inside, before melting. The aforementioned doll body is constructed in such a way that it cannot be seen from the outside. The outer layer and the inner layer each contain a pigment that produces a different color, and the outer layer and the The inner layer dissolves sequentially, dyeing the liquid in which the main body has dissolved a different color. can be, The aforementioned sub-body is made of a mineral of a size that is large enough to decorate the area around the doll body. Re, The main body has a weight such that it sinks in the liquid when immersed in it. The aforementioned doll body is configured to float in the liquid after the main body has dissolved. The aforementioned sub-body part, after the main body part has dissolved, floats up together with the doll body and becomes suspended in space. A solid bath additive that is designed to be used in this way.
2. A solid bath additive according to claim 1, The aforementioned sub-body is housed around the doll body before the melting of the main body. Bath additive in a specific shape.
3. A solid bath additive according to claim 2, After the main body dissolves, the auxiliary body floats up together with the doll body, and a predetermined time elapses. A solid bath additive that dissolves in the aforementioned liquid at the time of application.
4. A solid bath additive according to claim 3, The aforementioned auxiliary body is made of mica, and is a solid bath additive.
5. A solid bath additive according to claim 4, The main body is configured to have a rotatable outer shape before dissolving in the liquid, and is solid. Bath salts.
6. A solid bath additive according to any one of claims 1 to 5, The main body is configured to change the liquid from a non-bubble-generating state to a bubble-generating state. Solid bath additive.
7. A solid bath additive according to claim 6, The main body is, in the state where no bubbles have been generated in the liquid in which the main body has dissolved, A solid bath additive configured to generate bubbles under the condition of the operation described above.
8. A solid bath additive according to claim 7, The above operation involves at least one of the following: stirring the liquid and applying vibration. A solid bath additive.
9. A solid bath additive according to claim 8, The main body is configured such that, in the foam-generating state, it becomes a foam-disappearing state after a predetermined time has elapsed. It is a solid bath additive.