Dentifrice

Abstract

The present invention relates to a dentifrice, which is obtained by filling a dentifrice composition into an upright bottle container using an airless pump, and which is capable of sufficiently suppressing the occurrence of spattering and ensuring good ejection properties and shape retention properties. Namely, this dentifrice is obtained by filling an upright bottle container (X) with a dentifrice composition (Y) at an initial filling rate of less than 100%, the upright bottle container (X) being formed by connecting an airless pump member provided with a nozzle to an upper surface opening portion of a container main body, and in the upright bottle container (X), a suction inlet (x1-1) is in a specific state, and in the dentifrice composition (Y), the suction inlet (x1-1) is in a specific state. The ratio of the Helipath viscosity (y1) at 25 DEG C to the B8H viscosity (y2) at 25 DEG C, which is a specific value, is a specific value.

Description

Technical Field

[0001] The present invention relates to a dentifrice obtained by filling a dentifrice composition into an upright bottle container. Background Art

[0002] A dentifrice filled in a container equipped with a pump can be easily ejected by simply pressing the pump during use. Among them, if an "Airless Pump" without air inflow is used as the pump, it has advantages such as being able to easily prevent the quality deterioration of the content compared with an air-inflow type pump.

[0003] For example, Patent Document 1 discloses a dentifrice composition having a specific viscosity. Among them, the dentifrice composition is housed in a pump-type dentifrice container including an airless pump and a tube for supplying the dentifrice composition to the airless pump, and the dentifrice composition contains a specific amount of thickening silica.

[0004] (Patent Document 1) Japanese Patent Laid-Open No. 2021-8323 Summary of the Invention

[0005] The present invention provides a dentifrice, wherein the dentifrice is obtained by filling a dentifrice composition (Y) into an upright bottle container (X) at an initial filling rate of less than 100%. The upright bottle container (X) is formed by connecting an airless pump member having a nozzle to the upper surface opening of the container body.

[0006] The upright bottle container (X) has the following mechanism: in conjunction with the operation of the pump, the dentifrice composition (Y) is sucked from the suction port (x1-1) via the suction valve (x1-2), and the dentifrice composition (Y) is ejected from the ejection port of the nozzle.

[0007] In the upright bottle container (X), before starting to use the dentifrice, the suction port (x1-1) is in a state of not being immersed in the dentifrice composition (Y).

[0008] The Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is 1300 dPa·s or more and 5000 dPa·s or less, and the ratio ((y1) / (y2)) of the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C to the B8H viscosity (y2) at 25°C is 1 or more and 4 or less.

[0009] Here, the present inventors noticed the following new problem: If a paste having a high shape retention property such as a dentifrice is filled into an upright airless pump container and an attempt is made to eject the dentifrice from the container, especially when the dentifrice is filled into the airless pump container at an initial filling rate of less than 100%, the air present in the container will mix into the dentifrice composition, and splashing such as excessive protrusion will occur during ejection.

[0010] However, in the prior art such as the above-mentioned Patent Document 1, in terms of sufficiently suppressing the occurrence of the protrusion or splashing of the agent caused by air mixing into the container during the ejection, and taking into account good ejection properties and shape retention on the toothbrush, the situation still needs to be improved.

[0011] That is, the present invention relates to a dentifrice obtained by filling a dentifrice composition into a vertical bottle container without an air pump, which can sufficiently suppress the occurrence of splashing and ensure good ejection properties and shape retention.

[0012] Therefore, the present inventors conducted intensive research to solve the above problems, and as a result, it was found that by filling a dentifrice composition having specific viscosity characteristics into a vertical bottle container with a suction port in a specific state, useless splashing can be effectively suppressed, and good ejection properties and shape retention can be ensured.

[0013] The dentifrice obtained by filling a dentifrice composition into a vertical bottle container according to the present invention (hereinafter also referred to as "the dentifrice of the present invention") can effectively suppress the occurrence of splashing such as excessive protrusion caused by air mixing into the container, and can also exhibit good ejection properties and shape retention, so that it can be felt comfortable and highly convenient during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic view showing one form of the vertical bottle constituting the dentifrice of the present invention.

[0015] Figure 2 It shows Figure 1 an enlarged view of the upper surface opening of the container body in

[0016] Figure 3 It is an enlarged view showing the upper surface opening of the container body in a container in which an impregnation tube is disposed at the lower end of an airless pump member as one form of the vertical bottle constituting the dentifrice of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, the present invention will be described in detail.

[0018] In addition, in the present invention, good "ejection properties" include the meaning of the pressing condition of the pump and the time until the button returns to the original state when the dentifrice composition is ejected from the vertical bottle container.

[0019] Furthermore, the state where the suction port (x1-1) is not immersed in the dentifrice composition (Y) means that in the container body of the vertical bottle container, the suction port (x1-1) is not in contact with the dentifrice composition (Y) but is separated from the dentifrice composition (Y).

[0020] The dentifrice of the present invention is formed by filling a vertical bottle container (X) with a dentifrice composition (Y) at an initial filling rate of less than 100%. The vertical bottle container (X) is formed by connecting a non-aerosol pump member having a nozzle to the upper surface opening of the container body.

[0021] The vertical bottle container (X) constituting the present invention is a container formed by a container body having a bottom surface and an upper surface opening, and connecting a non-aerosol pump member having a nozzle to the upper surface opening of the container body. That is, as Figure 1 shown in the schematic diagram, a flow path reaching the spout of the nozzle 32 is formed in the vertical bottle container (X) 1 constituting the present invention via the upper surface opening 21 of the container body 2 and the non-aerosol pump member 3.

[0022] Therefore, when in use, if the non-aerosol pump is operated while the container 1 is kept upright, the dentifrice composition can be easily ejected from the nozzle 32, which is a container helpful for improving usability and convenience.

[0023] In addition, the non-aerosol pump member 3 is a member having a pump without air inflow. The pressing force inside the pump changes in conjunction with the pressing of the pump. As a series of operations, the dentifrice composition filled in the container body 2 can be sucked into the non-aerosol pump member 3 and ejected to the outside from the nozzle 32.

[0024] In addition, Figure 1 the non-aerosol pump member 3 shown is a member having a pump 31 presenting a so-called "dome-shaped pump" form, but the present invention is not limited thereto, and it may also be a member having a pump presenting a form such as a piston pressing the upper part downward (not shown), etc., which can be appropriately selected.

[0025] In this way, the vertical bottle container (X) 1 has a mechanism that, in conjunction with the operation of the pump 31, sucks the dentifrice composition from the suction port (x1-1) via the suction valve (x1-2) and ejects the dentifrice composition from the spout of the nozzle 32. For example, if it is Figure 1 the form of the vertical bottle container (X) 1 shown, when operated by pressing a button of the pump 31, etc., the internal pressure of the pump 31 changes, and the suction valve (x1-2) can be actuated. Specifically, if the internal pressure inside the pump increases due to the operation of the pump 31, the suction valve (x1-2) closes to prevent the inflow of the dentifrice composition. On the other hand, if the internal pressure inside the pump decreases, the suction valve (x1-2) opens to suck the dentifrice composition from the suction port (x1-1).

[0026] In the vertical bottle container (X) constituting the present invention, before starting to use the dentifrice, the suction port (x1-1) is in a state of not being immersed in the dentifrice composition (Y).

[0027] In addition, when the dip tube is disposed at the lower end of the airless pump member, the suction port (x1-1) is set to the lower end of the dip tube.

[0028] In the bottle container of the prior art, a dip tube is provided, and the dip tube has a shape that extends to such an extent that the lower end reaches near the bottom surface of the container body. This is provided in consideration of being able to sufficiently suck the contents slightly remaining near the bottom surface from the start to the end of the first use of the pump without wasteful ejection.

[0029] However, in the present invention in which an "airless pump" without air inflow is used as the pump, the initial filling rate is less than 100%, and there is an unfilled area of the dentifrice composition (Y) in the upright bottle container (X), if such a long dip tube is disposed from the lower end of the airless pump member toward the bottom surface of the container body, the suction port will be kept in a state of being immersed in the dentifrice composition in the container. Therefore, as the remaining amount of the dentifrice composition decreases, the air present in the unfilled area of the dentifrice composition will also be sucked together with the dentifrice composition in conjunction with the operation of the pump. As a result, air is mixed into the dentifrice composition ejected from the nozzle, which becomes the main cause of splashing such as excessive protrusion, and the present inventors have re-noticed this problem.

[0030] Therefore, the present inventors have found that, first, in the upright bottle container (X) constituting the present invention, in order to effectively suppress the mixing of useless air when ejecting the dentifrice composition, before starting to use the dentifrice, the suction port (x1-1) should be in a state of not being immersed in the dentifrice composition (Y), and the dentifrice composition (Y) having the following specific viscosity characteristics is filled therein. As a result, according to the present invention, at the start of the first use of the dentifrice, first, the air occupying the unfilled area of the dentifrice composition in the container body can be pre-exhausted by multiple pump operations. Further, thereafter, not only can the occurrence of splashing be effectively suppressed until the dentifrice composition (Y) in the container is used up, but also good ejection properties and shape retention properties can be exhibited.

[0031] In order to make the suction port (x1-1) in a state of not being immersed in the dentifrice composition (Y) before starting to use the dentifrice, from the viewpoint of effectively suppressing the mixing of useless air, the distance (xd) from the suction port (x1-1) to the suction valve (x1-2) is preferably less than 50 mm, more preferably less than 46 mm, further preferably less than 35 mm, further more preferably less than 25 mm, further more preferably less than 20 mm, further more preferably less than 15 mm, further more preferably less than 10 mm, further more preferably less than 5 mm, further more preferably less than 1 mm.

[0032] Further, from the viewpoint of ensuring the fluidity of the dentifrice composition (Y) having a specific viscosity characteristic in the flow path, the diameter of the suction port (x1-1) is preferably 1 mm or more, more preferably 5 mm or more, and preferably 15 mm or less, more preferably 12 mm or less.

[0033] In one embodiment of the upright bottle container (X), from the viewpoint of keeping the suction port (x1-1) in a state not immersed in the dentifrice composition (Y) before starting to use the dentifrice, and further from the viewpoint of restricting the distance (xd) from the suction port (x1-1) to the suction valve (x1-2) within the above range, as Figure 3 shown, it is preferable that the suction port (x1-1) is formed by the lower end portion of the dipping tube 33 disposed at the lower end portion of the airless pump member 3.

[0034] Alternatively, in another embodiment of the upright bottle container (X), as Figure 2 shown, in the case where the dipping tube 33 is not provided, the suction port (x1-1) is integrally formed at the lower end portion of the airless pump member 3.

[0035] Accordingly, in the dentifrice of the present invention filled with the dentifrice composition (Y) at an initial filling rate of less than 100%, it is possible to prevent the suction port (x1-1) from being immersed in the dentifrice composition (Y) before starting to use, and it is possible to discharge the air occupying the unfilled region of the dentifrice composition in the container main body at the start of the first use, and it is possible to effectively suppress splashing such as excessive protrusion during ejection.

[0036] When the dipping tube 33 is provided at the lower end portion of the airless pump member 3, from the viewpoint of effectively suppressing the mixing of useless air, the length of the dipping tube 33, measured as the distance from the suction valve (x1-2) to the lower end portion of the dipping tube 33, is preferably less than 43 mm, more preferably less than 35 mm, further preferably less than 30 mm, further more preferably less than 20 mm, and further more preferably less than 18 mm.

[0037] Even more preferably, the upright bottle container (X) has a structure in which no dipping tube is provided at the lower end portion of the airless pump member 3.

[0038] From the viewpoint of ensuring smooth fluidity of the composition in the flow path and maintaining good ejectability, the inner diameter of the suction port (x1-1) is preferably 1 to 15 mm, more preferably 2 to 14 mm, further preferably 3 to 13 mm, further more preferably 4 to 12 mm, and further more preferably 5 to 11 mm.

[0039] In the upright bottle container (X), from the viewpoints of maintaining good ejection performance and improving usability, the maximum pressing force (x2) of the pump is preferably 10 N or more, more preferably 20 N or more, still more preferably 30 N or more, and is preferably 100 N or less, more preferably 80 N or less, still more preferably 50 N or less.

[0040] The initial filling rate of the tooth cleaning composition (Y) in the upright bottle container (X) is less than 100%, and may be 50 to 99%, may be 60 to 95%, may be 65 to 90%, or may be 70 to 85%.

[0041] In addition, the initial filling rate (%) is the filling rate (%) of the tooth cleaning composition (Y) in the container body of the upright bottle container (X) before starting to use the tooth cleaning agent of the present invention, and means the volume ratio (%) occupied by the tooth cleaning composition (Y) when the internal volume of the container body of the upright bottle container (X) is set to 100%.

[0042] In addition, particularly, in the case where the shape of the upright bottle container (X) is a film container such as a bag container, as Figure 1 shown, when the airless pump member 3 having a nozzle is installed in the upper surface opening 21 of the container body for use, the internal volume of the container body of the upright bottle container (X) as the reference of the initial filling rate (%) means the total void volume in the container body shielded by the installed airless pump member 3 and the suction valve (x1-2).

[0043] In the container body, the initial air presence rate (%) in the upright bottle container (X) can be more than 1% and less than 50%, can be more than 5% and less than 40%, can be more than 10% and less than 45%, or can be more than 15% and less than 30%.

[0044] In addition, the initial air presence rate (%) is a value representing the total amount of air present in the container body of the upright bottle container (X) before starting to use the tooth cleaning agent of the present invention, and means the volume ratio (%) occupied by the total amount of air when the internal volume of the upright bottle container (X) is set to 100%.

[0045] In addition, particularly, in the case where the shape of the upright bottle container (X) is a film container such as a bag container, as Figure 1 shown, when the airless pump member 3 having a nozzle is installed in the upper surface opening 21 of the container body for use, the internal volume of the container body of the upright bottle container (X) as the reference of the initial presence rate (%) means the total void volume in the container body shielded by the airless pump member 3 and the suction valve (x1-2).

[0046] The internal volume of the container body of the upright bottle container (X) can be appropriately designed in consideration of usability. For example, it is preferably 30 to 1000 mL, more preferably 50 to 500 mL, further preferably 75 to 300 mL, further more preferably 80 to 250 mL, and further more preferably 90 to 200 mL.

[0047] In the upright bottle container (X), from the viewpoint of ensuring good usability, the amount (x3) of the tooth cleaning composition (Y) ejected from the ejection port of the nozzle 32 by one press of the pump is preferably 0.1 g or more, more preferably 0.5 g or more, further preferably 0.75 g or more, further more preferably 0.8 g or more, and is preferably 10 g or less, more preferably 7 g or less, further preferably 5 g or less, and further more preferably 4 g or less.

[0048] The material of the upright bottle container (X) is preferably a material having a softness that deforms according to the amount of the tooth cleaning composition (Y) consumed. For example, polyethylene, polypropylene, polyethylene terephthalate, etc. can be cited. Among them, as Figure 1 shown, the material of the button of the pump 31 of the airless pump member 3 can also be a material having a relatively high softness and being easily elastically deformed in conjunction with pressing.

[0049] As the form of the upright bottle container (X), from the viewpoints of operability or airtightness when filling the content, etc., it is preferably made into a film container. Specifically, for example, it is preferably made into a bag container.

[0050] Regarding the tooth cleaning composition (Y) constituting the present invention, it is filled in the above-mentioned upright bottle container (X), and its Helipath viscosity (y1) at 25°C is 1300 dPa·s or more and 5000 dPa·s or less, and the ratio ((y1) / (y2)) of its Helipath viscosity (y1) at 25°C to its B8H viscosity (y2) at 25°C is 1 or more and 4 or less.

[0051] The tooth cleaning composition (Y) having such specific viscosity characteristics presents a paste-like form, and until the tooth cleaning composition (Y) in the container is used up, it can effectively suppress splashing such as excessive protrusion due to the mixing of air, and can also exhibit good ejection properties and excellent shape retention properties.

[0052] From the viewpoint of maintaining an appropriate elasticity as a paste-like composition filled in the above-mentioned upright bottle container (X), effectively suppressing the occurrence of splashing, maintaining good ejectability, and ensuring excellent shape retention, the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is 1300 dPa·s or more, preferably 1500 dPa·s or more, more preferably 1700 dPa·s or more, further preferably 2000 dPa·s or more, and 5000 dPa·s or less, preferably 4000 dPa·s or less, more preferably 3600 dPa·s or less, further preferably 3400 dPa·s or less, and even more preferably 3000 dPa·s or less. Moreover, the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is 1300 dPa·s or more and 5000 dPa·s or less, preferably 1300 to 4000 dPa·s, more preferably 1500 to 3600 dPa·s, further preferably 1700 to 3400 dPa·s, and even more preferably 2000 to 3000 dPa·s.

[0053] From the viewpoint of maintaining an appropriate elasticity as a paste-like composition filled in the above-mentioned upright bottle container (X), effectively suppressing the occurrence of splashing, maintaining good ejectability, and ensuring excellent shape retention, the B8H viscosity (y2) of the dentifrice composition (Y) at 25°C is preferably 325 dPa·s or more, more preferably 375 dPa·s or more, further preferably 450 dPa·s or more, and even more preferably 880 dPa·s or more, and preferably 4000 dPa·s or less, more preferably 3000 dPa·s or less, further preferably 2500 dPa·s or less, and even more preferably 1500 dPa·s or less. Moreover, the B8H viscosity (y2) of the dentifrice composition (Y) at 25°C is preferably 325 to 4000 dPa·s, more preferably 375 to 3000 dPa·s, further preferably 450 to 2500 dPa·s, and even more preferably 880 to 1500 dPa·s.

[0054] From the viewpoints that the paste-like composition filled in the above-mentioned upright bottle container (X) exhibits specific viscosity characteristics, and until the dental care composition (Y) in the container is used up, it effectively suppresses splashing such as excessive protrusion due to the mixing of air, ensures good ejectability and shape retention, and can prevent useless clogging at the lower part and the like, so that the pump can operate smoothly and continuously, the ratio ((y1) / (y2)) of the Helipath viscosity (y1) of the dental care composition (Y) at 25°C to the B8H viscosity (y2) at 25°C is 1 or more, preferably 1.1 or more, more preferably 1.2 or more, further preferably 1.3 or more, further more preferably 1.4 or more, and is 4 or less, preferably 3.8 or less, more preferably 3.5 or less, further preferably 3.3 or less, further more preferably 3.1 or less. Moreover, the ratio ((y1) / (y2)) of the Helipath viscosity (y1) of the dental care composition (Y) at 25°C to the B8H viscosity (y2) at 25°C is 1 or more and 4 or less, preferably 1.1 to 3.8, more preferably 1.2 to 3.5, further preferably 1.3 to 3.3, further more preferably 1.4 to 3.1.

[0055] In the dental care agent of the present invention, from the viewpoints of effectively suppressing the occurrence of splashing until the dental care composition (Y) in the container is used up and ensuring good ejectability and shape retention, it is preferred that the dental care composition (Y) contains a higher alcohol (yA), and the ratio ((yA) / (x2)) of the content of the component (yA) in the dental care composition (Y) to the maximum pressing force (x2) of the pump in the upright bottle container (X) is in a specific range. Specifically, the ratio ((yA) / (x2)) of the content of the component (yA) in the dental care composition (Y) to the maximum pressing force (x2) of the pump in the upright bottle container (X) is preferably 0.1 mass% / N or more, more preferably 0.15 mass% / N or more, further preferably 0.2 mass% / N or more, further more preferably 0.25 mass% / N or more, and is preferably 0.6 mass% / N or less, more preferably 0.5 mass% / N or less, further preferably 0.4 mass% / N or less, further more preferably 0.35 mass% / N or less.

[0056] The higher alcohol (yA) that the dental care composition (Y) may contain is preferably a higher alcohol having 12 or more and 22 or less carbon atoms, more preferably a higher alcohol having 14 or more and 20 or less carbon atoms. Specifically, it is preferably one or more selected from cetyl alcohol, stearyl alcohol, lauryl alcohol, myristyl alcohol, and behenyl alcohol, more preferably one or two selected from cetyl alcohol (yA1) and stearyl alcohol (yA2), and further preferably contains cetyl alcohol (yA1) and stearyl alcohol (yA2).

[0057] From the viewpoints of maintaining an appropriate viscosity as a paste composition, effectively suppressing the occurrence of splashing, and ensuring good ejection properties and shape retention properties, in the dental care composition (Y), the content of the component (yA) is preferably 2% by mass or more, more preferably 3% by mass or more, further preferably 4% by mass or more, still more preferably 5% by mass or more, still more preferably 7% by mass or more, and is preferably 25% by mass or less, more preferably 23% by mass or less, further preferably 20% by mass or less, still more preferably 18% by mass or less, still more preferably 14% by mass or less. Moreover, in the dental care composition (Y), the content of the component (yA) is preferably 2% by mass or more and 25% by mass or less, more preferably 3 to 23% by mass, further preferably 4 to 20% by mass, still more preferably 5 to 18% by mass, still more preferably 7 to 14% by mass.

[0058] Here, when the dental care composition (Y) contains cetyl alcohol (yA1) and stearyl alcohol (yA2) as the component (yA), from the viewpoint of forming a paste composition exhibiting specific viscosity characteristics, the mass ratio ((yA1) / (yA2)) of the content of the component (yA1) to the content of the component (yA2) is preferably 0.5 or more, more preferably 0.7 or more, further preferably 1 or more, and is preferably 10 or less, more preferably 8 or less, further preferably 3.5 or less.

[0059] In addition, components other than the component (yA1) and the component (yA2) may be contained as the component (Y). Examples of such components include lauryl alcohol, myristyl alcohol, and behenyl alcohol.

[0060] From the viewpoint of forming a paste composition exhibiting specific viscosity characteristics, the dental care composition (Y) preferably further contains a nonionic surfactant (yB).

[0061] Examples of the component (yB) include one or more selected from the following components: sorbitan fatty acid esters such as sorbitan monodecanoate, sorbitan monolaurate, sorbitan monomyristate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, sorbitan sesquioleate, sorbitan trioleate, sorbitan tetraoleate, and sorbitan monooleate; and polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monomyristate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, and polyoxyethylene sorbitan monooleate.

[0062] Among them, it is preferably one or more selected from sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, and polyoxyethylene sorbitan monooleate, more preferably contains both sorbitan fatty acid ester and polyoxyethylene sorbitan fatty acid ester, and further preferably contains both polyoxyethylene sorbitan monostearate and sorbitan monostearate.

[0063] From the viewpoint of maintaining an appropriate viscosity of the paste-like composition, effectively suppressing the occurrence of splashing, and ensuring good ejection properties and shape retention, in the dental cleaning composition (Y), the content of the component (yB) is preferably 0.2% by mass or more, more preferably 1% by mass or more, and further preferably 3% by mass or more. In addition, from the viewpoint of ensuring the stability of the composition, in the dental cleaning composition (Y), the content of the component (yB) is preferably 10% by mass or less, more preferably 8% by mass or less, and further preferably 6% by mass or less. Moreover, in the dental cleaning composition (Y), the content of the component (yB) is preferably 0.2 to 10% by mass, more preferably 1 to 8% by mass, and further preferably 3 to 6% by mass.

[0064] From the viewpoint of preparing a paste-like composition exhibiting specific viscosity characteristics, the dental cleaning composition (Y) may further contain water (yC). The water of the component (yC) in the present invention refers to the total moisture contained in the dental cleaning composition, including not only purified water and the like formulated in the dental cleaning composition, but also the moisture contained in each of the formulated components. By containing water (yC) in the dental cleaning composition (Y), the above-mentioned components can be well dissolved or dispersed, and the dental cleaning composition (Y) is filled in the upright bottle container (X) to form a dentifrice, thereby fully exerting the required effects.

[0065] In the dental cleaning composition (Y), the content of the component (yC) is preferably 30% by mass or more, more preferably 40% by mass or more, and further preferably 55% by mass or more, and is preferably 95% by mass or less, more preferably 80% by mass or less, and further preferably 65% by mass or less. Moreover, in the dental cleaning composition (Y), the content of the component (yC) is preferably 30 to 95% by mass, more preferably 40 to 80% by mass, and further preferably 55 to 65% by mass.

[0066] In addition, the content of the component (yC) can also be calculated based on the amount of water formulated and the amount of water in the formulated components, for example, by measurement using a Karl Fischer moisture meter. As the Karl Fischer moisture meter, for example, a trace moisture measurement device (manufactured by Hiranuma Sangyo Co., Ltd.) can be used. In this device, 5 g of the toothpaste composition is suspended in 25 g of anhydrous methanol, and 0.02 g of this suspension is taken to measure the moisture content.

[0067] From the viewpoint of producing a paste-like composition exhibiting specific viscosity characteristics and ensuring the effect of suppressing the occurrence of splashing, the toothpaste composition (Y) may contain a fatty acid (yD) having 16 or more and 18 or less carbon atoms. As this component (yD), a saturated fatty acid is preferred, and specifically, one or both selected from palmitic acid and stearic acid can be cited. Among them, stearic acid is preferred.

[0068] From the viewpoints of the paste-like composition maintaining appropriate viscosity, effectively suppressing the occurrence of splashing, and ensuring good ejection properties and shape retention, in the toothpaste composition (Y), the content of the component (yD) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, further preferably 0.8% by mass or more, and still further preferably 1.2% by mass or more. In addition, from the viewpoint of ensuring good usability such as a good fragrance, in the toothpaste composition (Y), the content of the component (yD) is preferably 4% by mass or less, more preferably 3.6% by mass or less, further preferably 3.2% by mass or less, still further preferably 2.8% by mass or less, and still further preferably 2.4% by mass or less. Moreover, in the toothpaste composition (Y), the content of the component (yD) is preferably 0.1% by mass or more and 4% by mass or less, more preferably 0.1 to 3.6% by mass, further preferably 0.5 to 3.2% by mass, still further preferably 0.8 to 2.8% by mass, and still further preferably 1.2 to 2.4% by mass.

[0069] From the viewpoint of producing a paste-like composition exhibiting specific viscosity characteristics and ensuring the effect of suppressing the occurrence of splashing, the toothpaste composition (Y) may contain one or more of sodium hydroxide, potassium hydroxide, and arginine (yE). Among them, sodium hydroxide and potassium hydroxide are preferred.

[0070] From the viewpoints that the paste-like composition maintains an appropriate viscosity, effectively suppresses the occurrence of splashing, and ensures good ejectability and shape retention, in the dental care composition (Y), the content of the component (yE) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.3% by mass or more, and still more preferably 0.4% by mass or more. Further, from the viewpoint of ensuring good usability such as a pleasant fragrance, in the dental care composition (Y), the content of the component (yE) is preferably 1.6% by mass or less, more preferably 1.4% by mass or less, further preferably 1.2% by mass or less, still more preferably 1.0% by mass or less, and still more preferably 0.8% by mass or less. Moreover, in the dental care composition (Y), the content of the component (yE) is preferably 0.1% by mass or more and 1.6% by mass or less, more preferably 0.1 to 1.4% by mass, further preferably 0.2 to 1.2% by mass, still more preferably 0.3 to 1.0% by mass, and still more preferably 0.4 to 0.8% by mass.

[0071] From the viewpoints that the paste-like composition maintains an appropriate viscosity, effectively suppresses the occurrence of splashing, and ensures good ejectability and shape retention, the dental care composition (Y) may further contain a binder and / or a viscosity modifier. Examples of the binder and / or the viscosity modifier include: polymer binders such as carboxyvinyl polymer and acrylic acid / (meth)acrylic acid alkyl ester copolymer; hydroxycellulose derivatives such as hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose; binders and viscosity modifiers other than hydroxycellulose derivatives such as sodium carboxymethyl cellulose, carboxyvinyl polymer, ethyl cellulose, sodium alginate, carrageenan, xanthan gum, sodium polyacrylate, pectin, agar, tragacanth gum, gum arabic, guar gum, karaya gum, locust bean gum, gellan gum, tamarind gum, and psyllium seed gum.

[0072] In the dental care composition (Y), the total content of the binder and the viscosity modifier is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, further preferably 0.03% by mass or more, and still more preferably 0.05% by mass or more, and is preferably 1.2% by mass or less, more preferably 1.1% by mass or less, further preferably 1.0% by mass or less, and still more preferably 0.9% by mass or less.

[0073] In addition, from the viewpoints of effectively suppressing the occurrence of splashing and ensuring good ejection properties and shape retention properties, the dental care composition (Y) preferably contains a limited amount of polyvalent metals selected from strontium, magnesium, aluminum, calcium, zirconium, iron, copper, zinc, and manganese. In the dental care composition (Y), the content of the polyvalent metal in terms of the amount of metal atoms is preferably 2% by mass or less, more preferably 1% by mass or less, further preferably 0.5% by mass or less, and still more preferably 0.1% by mass or less. Alternatively, the dental care composition (Y) preferably substantially does not contain polyvalent metals selected from strontium, magnesium, aluminum, calcium, zirconium, iron, copper, zinc, and manganese. Particularly preferably, it contains a limited amount of sodium copper chlorophyllin, and the dental care composition (Y) particularly preferably does not contain sodium copper chlorophyllin.

[0074] From the viewpoint of obtaining a paste-like composition having specific viscosity characteristics and ensuring the effect of suppressing the occurrence of splashing, the dental care composition (Y) preferably contains a limited amount of an oily component.

[0075] The oily component refers to a component that exhibits oil solubility in addition to the above components (yA) and (yB), and is a component that exhibits oil solubility in addition to surfactants and fragrances. Specifically, examples include: hydrocarbon oils such as liquid paraffin, petrolatum, mineral oil, light liquid paraffin, paraffin wax, ozokerite, microcrystalline wax, carnauba wax, beeswax, squalane, and squalene; ester oils such as isopropyl myristate, isopropyl palmitate, propyl adipate, diethyl sebacate, and glycerol fatty acid esters; triglycerides and vegetable oils containing the same, such as olive oil, rapeseed oil, shea butter, and rice bran oil; silicone oils; preservatives such as methyl paraben and ethyl paraben; and oil-soluble bactericides.

[0076] In the dental care composition (Y), the content of these oily components is preferably less than 0.15% by mass, more preferably less than 0.1% by mass, and further preferably less than 0.05% by mass. Alternatively, the dental care composition (Y) preferably substantially does not contain an oily component.

[0077] Within the range that does not hinder the effects of the present invention, the dental care composition (Y) may contain the following components as components other than the above components: sugar alcohols such as sorbitol, xylitol, erythritol, isomaltitol, and mannitol; humectants such as glycerol; fluorides; pharmacologically active components such as vitamin E acetate and glycyrrhetinic acid; surfactants other than component (yB) or component (yD); antibacterial agents such as cetylpyridinium chloride; fragrances; sweeteners; coloring agents, etc.

[0078] In the dentifrice composition contained in the upright bottle container of the present invention, from the viewpoints of effectively suppressing the intrusion of useless air when the dentifrice composition (Y) is ejected and exhibiting good ejection properties and shape retention properties, specific physical properties in the upright bottle container (X) and specific physical properties in the dentifrice composition (Y) preferably have a specific relationship. That is, specifically, the product ((x2) × (x1-1)) of the pressing force (x2) of the pump in the upright bottle container (X) and the inner diameter of the suction port (x1-1) and the distance (xd) from the suction port (x1-1) to the suction valve (x1-2), the amount (x3) of the dentifrice composition ejected from the ejection port by one pressing of the pump, and the product ((x1-3) × (x3) × (y1)) of the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C, the ratio ({(x2) × (x1-1)} / {(x1-3) × (x3) × (y1)}) is preferably 0.0013 N / g·dPa·s or more, more preferably 0.0015 N / g·dPa·s or more, further preferably 0.0017 N / g·dPa·s or more, still further preferably 0.002 N / g·dPa·s or more, and preferably 0.01 N / g·dPa·s or less, more preferably 0.008 N / g·dPa·s or less, further preferably 0.006 N / g·dPa·s or less, still further preferably 0.004 N / g·dPa·s or less.

[0079] The present invention can be further used in the following dentifrice kit.

[0080] That is, the dentifrice kit of the present invention is composed of an upright bottle container (X) and a dentifrice composition (Y). The upright bottle container (X) is formed by connecting an airless pump member having a nozzle to the upper surface opening of the container body. The Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is 1300 dPa·s or more and 5000 dPa·s or less, and the ratio ((y1) / (y2)) of the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C to the B8H viscosity (y2) at 25°C is 1 or more and 4 or less.

[0081] The upright bottle container (X) has the following mechanism: in conjunction with the operation of the pump, the dentifrice composition (Y) is sucked from the suction port (x1-1) via the suction valve (x1-2) and ejected from the ejection port of the nozzle.

[0082] The initial filling rate of the dentifrice composition (Y) in the upright bottle container (X) is less than 100%, and in the upright bottle container (X), before starting to use the dentifrice kit, the suction port (x1-1) is in a state of not being immersed in the dentifrice composition (Y).

[0083] Regarding the above-described embodiments, the present invention further discloses a dentifrice obtained by filling a dentifrice composition into a vertical bottle container, and a dentifrice kit.

[0084] [1] A dentifrice obtained by filling a dentifrice composition (Y) into a vertical bottle container (X) at an initial filling rate of less than 100%, wherein the vertical bottle container (X) is formed by connecting an airless pump member having a nozzle to an upper surface opening of a container body.

[0085] The vertical bottle container (X) has a mechanism that, in conjunction with the operation of the pump, sucks the dentifrice composition (Y) from a suction port (x1-1) via a suction valve (x1-2) and ejects the dentifrice composition (Y) from a discharge port of the nozzle.

[0086] In the vertical bottle container (X), before starting to use the dentifrice, the suction port (x1-1) is not immersed in the dentifrice composition (Y).

[0087] The Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is 1300 dPa·s or more and 5000 dPa·s or less, and the ratio ((y1) / (y2)) of the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C to the B8H viscosity (y2) at 25°C is 1 or more and 4 or less.

[0088] [2] The dentifrice according to [1] above, wherein in the vertical bottle container (X), the distance (xd) from the suction port (x1-1) to the suction valve (x1-2) is preferably less than 50 mm, more preferably less than 46 mm, further preferably less than 35 mm, further more preferably less than 25 mm, further more preferably less than 20 mm, further more preferably less than 15 mm, further more preferably less than 10 mm, further more preferably less than 5 mm, further more preferably less than 1 mm.

[0089] [3] The dentifrice according to [1] or [2] above, wherein when an immersion tube is provided at the lower end of the airless pump member of the vertical bottle container (X), the length of the immersion tube, measured as the distance from the suction valve (x1-2) to the lower end of the immersion tube, is preferably less than 43 mm, more preferably less than 35 mm, further preferably less than 30 mm, further more preferably less than 20 mm, further more preferably less than 18 mm.

[0090] [4] The dentifrice according to any one of [1] to [3] above, wherein the vertical bottle container (X) is further more preferably structured such that no immersion tube is provided at the lower end of the airless pump member 3.

[0091] [5] The dentifrice according to any one of [1] to [4] above, wherein, in the upright bottle container (X), the maximum pressing force (x2) of the pump is preferably 10 N or more, more preferably 20 N or more, further preferably 30 N or more, and preferably 100 N or less, more preferably 80 N or less, further preferably 50 N or less.

[0092] [6] The dentifrice according to any one of [1] to [5] above, wherein the initial filling rate of the dentifrice composition (Y) in the upright bottle container (X) is less than 100%, and may be 50 - 99%, may be 60 - 95%, may be 65 - 90%, or may be 70 - 85%.

[0093] [7] The dentifrice according to any one of [1] to [6] above, wherein the shape of the upright bottle container (X) is preferably a film container, more preferably a bag container.

[0094] [8] The dentifrice according to any one of [1] to [7] above, wherein the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is preferably 1500 dPa·s or more, more preferably 1700 dPa·s or more, further preferably 2000 dPa·s or more, and preferably 4000 dPa·s or less, more preferably 3600 dPa·s or less, further preferably 3400 dPa·s or less, and still more preferably 3000 dPa·s or less.

[0095] [9] The dentifrice according to any one of [1] to [8] above, wherein the B8H viscosity (y2) of the dentifrice composition (Y) is preferably 325 dPa·s or more, more preferably 375 dPa·s or more, further preferably 450 dPa·s or more, and still more preferably 880 dPa·s or more, and preferably 4000 dPa·s or less, more preferably 3000 dPa·s or less, further preferably 2500 dPa·s or less, and still more preferably 1500 dPa·s or less.

[0096]

[10] The dentifrice according to any one of [1] to [9] above, wherein the ratio ((y1) / (y2)) of the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C to the B8H viscosity (y2) at 25°C is preferably 1.1 or more, more preferably 1.2 or more, further preferably 1.3 or more, and still more preferably 1.4 or more, and preferably 3.8 or less, more preferably 3.5 or less, further preferably 3.3 or less, and still more preferably 3.1 or less.

[0097]

[11] The dentifrice according to any one of [1] to

[10] above, wherein the dentifrice composition (Y) contains a higher alcohol (yA), and the ratio ((yA) / (x2)) of the content of the component (yA) in the dentifrice composition (Y) to the maximum pressing force (x2) of the pump in the upright bottle container (X) is preferably 0.1% by mass / N or more, more preferably 0.15% by mass / N or more, further preferably 0.2% by mass / N or more, still further preferably 0.25% by mass / N or more, and preferably 0.6% by mass / N or less, more preferably 0.5% by mass / N or less, further preferably 0.4% by mass / N or less, still further preferably 0.35% by mass / N or less.

[0098]

[12] The dentifrice according to

[11] above, wherein the higher alcohol (yA) is preferably a higher alcohol having 12 to 22 carbon atoms, more preferably a higher alcohol having 14 to 20 carbon atoms. Specifically, it is preferably one or more selected from cetyl alcohol, stearyl alcohol, lauryl alcohol, myristyl alcohol and behenyl alcohol, and more preferably one or two selected from cetyl alcohol (yA1) and stearyl alcohol (yA2).

[0099]

[13] The dentifrice according to

[11] or

[12] above, wherein the content of the component (yA) in the dentifrice composition (Y) is preferably 2% by mass or more, more preferably 3% by mass or more, further preferably 4% by mass or more, still further preferably 5% by mass or more, still further preferably 7% by mass or more, and preferably 25% by mass or less, more preferably 23% by mass or less, further preferably 20% by mass or less, still further preferably 18% by mass or less, still further preferably 14% by mass or less.

[0100]

[14] The dentifrice according to any one of

[11] to

[13] above, wherein when the dentifrice composition (Y) contains cetyl alcohol (yA1) and stearyl alcohol (yA2) as the component (yA), the mass ratio ((yA1) / (yA2)) of the content of the component (yA1) to the content of the component (yA2) is preferably 0.5 or more, more preferably 0.7 or more, further preferably 1 or more, and preferably 10 or less, more preferably 8 or less, further preferably 3.5 or less.

[0101]

[15] The dentifrice according to any one of [1] to

[14] above, wherein the dentifrice composition (Y) further contains a nonionic surfactant (yB), and the content of the component (yB) in the dentifrice composition (Y) is preferably 0.2% by mass or more, more preferably 1% by mass or more, further preferably 3% by mass or more, and preferably 10% by mass or less, more preferably 8% by mass or less, further preferably 6% by mass or less.

[0102]

[16] The dentifrice described in

[15] above, wherein the component (yB) is preferably one or more selected from sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, and polyoxyethylene sorbitan monooleate, more preferably containing both sorbitan fatty acid ester and polyoxyethylene sorbitan fatty acid ester, and further preferably containing both polyoxyethylene sorbitan monostearate and sorbitan monostearate.

[0103]

[17] The dentifrice described in any one of [1] to

[16] above, wherein in the dentifrice composition (Y), it is preferably further contains water (yC), and the content of the component (yC) is preferably 30% by mass or more, more preferably 40% by mass or more, further preferably 55% by mass or more, and preferably 95% by mass or less, more preferably 80% by mass or less, further preferably 65% by mass or less.

[0104]

[18] The dentifrice described in any one of [1] to

[17] above, wherein in the dentifrice composition (Y), the content of polyvalent metals selected from strontium, magnesium, aluminum, calcium, zirconium, iron, copper, zinc, and manganese in terms of the amount in terms of metal atoms is preferably 2% by mass or less, more preferably 1% by mass or less, further preferably 0.5% by mass or less, further more preferably 0.1% by mass or less, or the dentifrice composition (Y) preferably substantially does not contain polyvalent metals selected from strontium, magnesium, aluminum, calcium, zirconium, iron, copper, zinc, and manganese.

[0105]

[19] The dentifrice described in any one of [1] to

[18] above, wherein in the dentifrice composition (Y), the content of the oily component is preferably less than 0.15% by mass, more preferably less than 0.1% by mass, further preferably less than 0.05% by mass, or the dentifrice composition (Y) preferably substantially does not contain an oily component.

[0106]

[20] The dentifrice described in any one of [1] to

[19] above, wherein in the dentifrice composition (Y), it preferably contains a saturated fatty acid (yD) having 16 to 18 carbon atoms, and the content of the component (yD) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, further preferably 0.8% by mass or more, further more preferably 1.2% by mass or more, and preferably 4% by mass or less, more preferably 3.6% by mass or less, further preferably 3.2% by mass or less, further more preferably 2.8% by mass or less, further more preferably 2.4% by mass or less.

[0107]

[21] The dentifrice as described in any one of [1] to

[20] above, wherein in the dentifrice composition (Y), it is preferably contain one or more selected from sodium hydroxide, potassium hydroxide and arginine (yE), and the content of the component (yE) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.3% by mass or more, further more preferably 0.4% by mass or more, and preferably 1.6% by mass or less, more preferably 1.4% by mass or less, further preferably 1.2% by mass or less, further more preferably 1.0% by mass or less, and further more preferably 0.8% by mass or less.

[0108]

[22] The dentifrice as described in any one of [1] to

[21] above, wherein in the dentifrice composition (Y), the total content of the binder and the viscosity modifier is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, further preferably 0.03% by mass or more, further more preferably 0.05% by mass or more, and preferably 1.2% by mass or less, more preferably 1.1% by mass or less, further preferably 1.0% by mass or less, further more preferably 0.9% by mass or less.

[0109]

[23] The dentifrice as described in any one of [1] to

[22] above, wherein the ratio ({(x2)×(x1-1)} / {(x1-3)×(x3)×(y1)}) of the product ((x2)×(x1-1)) of the pressing force (x2) of the pump in the upright bottle container (X) and the inner diameter of the suction port (x1-1) to the distance (xd) from the suction port (x1-1) to the suction valve (x1-2), the amount (x3) of the dentifrice composition ejected from the ejection port by one pressing of the pump, and the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is preferably 0.0013 N / g·dPa·s or more, more preferably 0.0015 N / g·dPa·s or more, further preferably 0.0017 N / g·dPa·s or more, further more preferably 0.002 N / g·dPa·s or more, and preferably 0.01 N / g·dPa·s or less, more preferably 0.008 N / g·dPa·s or less, further preferably 0.006 N / g·dPa·s or less, further more preferably 0.004 N / g·dPa·s or less.

[0110]

[24] A dentifrice kit comprising an upright bottle container (X) and a dentifrice composition (Y), wherein the upright bottle container (X) is formed by connecting an airless pump member having a nozzle to an upper surface opening of a container body, the dentifrice composition (Y) having a Helipath viscosity (y1) of 1300 dPa·s to 5000 dPa·s at 25°C, and a ratio ((y1) / (y2)) of the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C to the B8H viscosity (y2) at 25°C of 1 to 4,

[0111] The upright bottle container (X) has a mechanism that, in conjunction with the operation of the pump, the toothpaste composition (Y) is sucked from the suction port (x1-1) via the suction valve (x1-2), and the toothpaste composition (Y) is ejected from the ejection port of the nozzle.

[0112] The initial filling rate of the toothpaste composition (Y) in the upright bottle container (X) is less than 100%, and, in the upright bottle container (X), before starting to use the toothpaste kit, the suction port (x1-1) is not immersed in the toothpaste composition (Y).

[0113] [Example]

[0114] Hereinafter, the present invention will be specifically described based on Examples. In addition, unless otherwise indicated in the tables, the content of each component in the dentifrice composition is expressed in mass %.

[0115] [Examples 1 to 8, Comparative Examples 1 to 3]

[0116] In Examples 1 to 8 and Comparative Examples 1 to 2, the following containers A and B (both Figure 1 In the embodiment shown in the figure, a container without a dipping tube was used as the upright bottle container, and in Comparative Example 3, container C (a container with a dipping tube, dipping tube length: 40 mm, xd: 46 mm) was used as the upright bottle container.

[0117] Each dentifrice composition was prepared according to the formulation shown in Table 1, and the obtained dentifrice composition was appropriately filled in each upright bottle container (filling rate: 82.7%). Then, each measurement and evaluation were performed according to the following method. The value of the ratio ((yA) / (x2)) and the value of the ratio ({(x2)×(x1-1)} / {(xd)×(x3)×(y1)}) were calculated based on container A.

[0118] In addition, in containers A and B, the inlet (x1-1) was not immersed in the filled dentifrice composition before use; in container C, the inlet was immersed in the filled dentifrice composition before use.

[0119] The results are shown in Table 1.

[0120] <Upright bottle container>

[0121] · Container A

[0122] Distance (xd): 18 mm

[0123] Inner diameter of the suction port (x1-1): 9 mm

[0124] Maximum pressing force of the pump (x2): 38 N

[0125] Filling rate: 82.7%

[0126] · Container B

[0127] Distance (xd): 18 mm

[0128] Inner diameter of the suction port (x1-1): 9 mm

[0129] Maximum pressing force of the pump (x2): 23.5 N

[0130] Filling rate: 82.7%

[0131] · Container C

[0132] Distance (xd): 56 mm

[0133] Inner diameter of the suction port (x1-1): 7 mm

[0134] Maximum pressing force of the pump (x2): 23.5 N

[0135] Filling rate: 82%

[0136] <Maximum pressing force of the pump>

[0137] Using a compression testing machine (M1000E, manufactured by MECMESHIN Co., Ltd.), the center part of the pump button was pressed under the following conditions, and the maximum pressing force (N) during the period from the start of pressing to complete insertion was measured as the maximum pressing force of the pump.

[0138] Indenter: A circular indenter with a radius of 1 cm

[0139] Pressing point: The center part of the pump button

[0140] Compression speed: 50 mm / minute

[0141] <Helipath viscosity>

[0142] The obtained tooth cleaning compositions were placed in containers for viscosity measurement, stored in a thermostat at 25°C for 24 hours, and then measured using a Helipath viscometer (VISCOMETER TVB-10, manufactured by Toki Sangyo Co., Ltd.) under the conditions of rotor T-C, rotation speed 2.5 rpm, and 1 minute.

[0143] <B8H Viscosity>

[0144] The obtained tooth cleaning compositions were placed in containers for viscosity measurement, stored in a thermostat at 25°C for 24 hours, and then measured using a B8H viscometer (TVB-10R, manufactured by Toki Sangyo Co., Ltd.) under the conditions of rotor H7, rotation speed 2.5 rpm, and 1 minute.

[0145] <Suppression of Splashing during Spraying>

[0146] After filling 100 g of each tooth cleaning composition shown in Table 1 into the container body of each upright bottle container, an airless pump member was installed and sealed, and stored at 25°C for 24 hours. The upright bottle container was set such that the front end of the spray outlet was at a position 150 mm above the placement surface of the bottle container, and the pump portion was pressed to repeatedly perform the spraying operation until the remaining amount became approximately 10 g.

[0147] The number of times the tooth cleaning composition fell to a position more than 35 mm away from the front end of the spray outlet in terms of linear distance was counted as the "splashing number", and the effect of suppressing splashing was evaluated according to the following criteria. The larger the value based on the following criteria, the more effectively the effect of suppressing splashing was exerted.

[0148] 5: The splashing number was 0 or more and less than 15 times.

[0149] 4: The splashing number was 15 or more and less than 25 times.

[0150] 3: The splashing number was 25 or more and less than 35 times.

[0151] 2: The splashing number was 35 or more and less than 45 times.

[0152] 1: The splashing number was 45 or more.

[0153] <Conformability>

[0154] After filling 100 g of each tooth cleaning composition shown in Table 1 into the container body of each upright bottle container, an airless pump member was installed and sealed, and stored at 25°C for 24 hours. Then, after spraying approximately 2 g of the tooth cleaning composition from the spray outlet of the bottle container onto the bristles of the toothbrush, the toothbrush was tilted 90°C such that the direction of the bristles of the toothbrush was parallel to the placement surface of the bottle container.

[0155] Measure the time until the dentifrice composition drops from the toothbrush after tilting the toothbrush, or visually confirm the fluidity of the dentifrice composition at this time, and evaluate the shape retention of the dentifrice composition according to the following criteria. The larger the value based on the following criteria, the more excellent the shape retention of the dentifrice composition.

[0156] 5: There is no flow at all and it does not drop from the toothbrush.

[0157] 4: It flows within 30 seconds but does not drop from the toothbrush.

[0158] 3: It drops from the toothbrush within a time of more than 10 seconds and less than 30 seconds.

[0159] 2: It drops from the toothbrush within a time of less than 10 seconds.

[0160] 1: It drops from the toothbrush immediately after tilting the toothbrush.

[0161] <Sprayability>

[0162] After filling 100 g of each dentifrice composition shown in Table 1 into the container body of each upright bottle container, install an airless pump member and seal it, and store it at 25 °C for 24 hours. Then, when the center part of the pump button is completely pressed, conduct a sensory evaluation of the pressing condition of the button according to the following criteria.

[0163] · Evaluation criteria

[0164] 5: Gently press the button.

[0165] 4: Press the button slightly gently.

[0166] 3: Press the button slightly heavily.

[0167] 2: Press the button heavily.

[0168] 1: Press the button heavily and the position of the button does not return to its original position.

[0169] <Operability after spraying>

[0170] After filling 100 g of each dentifrice composition shown in Table 1 into the container body of each upright bottle container, install an airless pump member and seal it, and store it at 25 °C for 24 hours. Then, press the center part of the pump button completely once, measure the time until the button returns to its original state, and set it as an index for evaluating the operability after spraying of the dentifrice composition filled in the upright bottle container according to the following criteria. The smaller the value based on the following criteria, the more excellent the fluidity of the dentifrice composition in the flow path, the better the sprayability is maintained, and the more effectively the dentifrice composition in the container can be used up.

[0171] 5: Quickly return to the original state.

[0172] 4: It returns to the original state in more than 1 second and less than 3 seconds.

[0173] 3: It returns to the original state in more than 3 seconds and less than 4 seconds.

[0174] 2: It returns to the original state in more than 4 seconds and less than 60 seconds.

[0175] 1: It does not return to the original state even after more than 60 seconds.

[0176]

[0177] [Symbol Explanation]

[0178] 1: Toothpaste

[0179] 2: Container body

[0180] 3: Airless pump component

[0181] 21: Upper surface opening of the container body

[0182] 31: Pump

[0183] 32: Nozzle

[0184] 33: Impregnation tube

[0185] x1-1: Suction port

[0186] x1-2: Suction valve

[0187] xd: Distance from the suction port to the suction valve.

Claims

1. A dentifrice, wherein, the dentifrice is formed by filling a dentifrice composition (Y) into a vertical bottle container (X) at an initial filling rate of less than 100%, the vertical bottle container (X) is formed by connecting a non-aerosol pump member having a nozzle to the upper surface opening of the container body, the vertical bottle container (X) has the following mechanism: in conjunction with the operation of the pump, the dentifrice composition (Y) is sucked from the suction port (x1-1) via the suction valve (x1-2), and the dentifrice composition (Y) is ejected from the ejection port of the nozzle, in the vertical bottle container (X), before starting to use the dentifrice, the suction port (x1-1) is in a state of not being immersed in the dentifrice composition (Y), the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is 1300 dPa·s or more and 5000 dPa·s or less, and the ratio (y1) / (y2) of the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C to the B8H viscosity (y2) at 25°C is 1 or more and 4 or less.

2. The dentifrice according to claim 1, wherein, in the vertical bottle container (X), the maximum pressing force (x2) of the pump is 10 N or more and 100 N or less.

3. The dentifrice according to claim 1 or 2, wherein, the amount (x3) of the dentifrice composition (Y) ejected from the ejection port by one pressing of the pump is 0.1 g or more and 10 g or less.

4. The dentifrice according to any one of claims 1 to 3, wherein, the dentifrice composition (Y) contains a higher alcohol (yA), and the ratio (yA) / (x2) of the content of the component (yA) in the dentifrice composition (Y) to the maximum pressing force (x2) of the pump in the vertical bottle container (X) is 0.1 mass% / N or more and 0.6 mass% / N or less.

5. The dentifrice according to any one of claims 1 to 4, wherein, the ratio ((x2)×(x1-1)) / ((xd)×(x3)×(y1)) of the product ((x2)×(x1-1)) of the maximum pressing force (x2) of the pump in the vertical bottle container (X) and the inner diameter of the suction port (x1-1) to the product ((xd)×(x3)×(y1)) of the distance (xd) from the suction port (x1-1) to the suction valve (x1-2), the amount (x3) of the dentifrice composition ejected from the ejection port by one pressing of the pump, and the Helipath viscosity (y1) of the dentifrice composition (Y) at 25°C is 0.0013 N / g·dPa·s or more and 0.01 N / g·dPa·s or less.

6. A dentifrice kit, wherein, the dentifrice kit is composed of a vertical bottle container (X) and a dentifrice composition (Y), the vertical bottle container (X) is formed by connecting a non-aerosol pump member having a nozzle to the upper surface opening of the container body, The Helipath viscosity (y1) of the tooth cleaning composition (Y) at 25°C is 1300 dPa·s or more and 5000 dPa·s or less, and the ratio (y1) / (y2) of the Helipath viscosity (y1) of the tooth cleaning composition (Y) at 25°C to the B8H viscosity (y2) at 25°C is 1 or more and 4 or less. The upright bottle container (X) has the following mechanism: in conjunction with the operation of the pump, the tooth cleaning composition (Y) is sucked in from the suction port (x1-1) via the suction valve (x1-2), and the tooth cleaning composition (Y) is ejected from the ejection port of the nozzle. The initial filling rate of the tooth cleaning composition (Y) in the upright bottle container (X) is less than 100%, and in the upright bottle container (X), before starting to use the tooth cleaning agent kit, the suction port (x1-1) is in a state of not being immersed in the tooth cleaning composition (Y).

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