Nozzles for dispensing oral care compositions and related assemblies and methods

Abstract

A nozzle for dispensing an oral care composition includes an orifice having a central axis and fins partially blocking the orifice, wherein each of the fins has an upper surface and a lower surface. In use, the nozzle may result in an increased weight of the dispensed oral care composition as compared to the same composition dispensed from a conventional unobstructed circular orifice. An assembly and a method are also provided.

Description

Technical Field

[0001] This disclosure relates generally to nozzles for dispensing oral care compositions, and more specifically to nozzles, components, and methods for dispensing oral care compositions. Background Technology

[0002] Oral care compositions (such as toothpaste and / or dental floss compositions) are applied to the oral cavity to clean and / or maintain the aesthetics and / or health of teeth, gums, and / or tongue. Additionally, many oral care compositions are designed to deliver active ingredients directly to the oral care surface. Using the appropriate amount of an oral care composition ensures you receive the right amount of active ingredients to provide effective cleaning and remove plaque, food particles, and bacteria, thereby promoting optimal oral hygiene. For example, many toothpastes contain fluoride, which helps strengthen tooth enamel and prevent cavities. Using the appropriate amount of toothpaste ensures you receive an effective dose of fluoride and / or the desired amount of aesthetic ingredients (e.g., flavorings).

[0003] Many commercial toothpaste packages feature a cylindrical nozzle and a flexible tube containing the toothpaste. When the user squeezes the tube, the toothpaste is extruded through the cylindrical nozzle and dispensed onto the toothbrush head in the form of granules. Users tend to apply less toothpaste than the recommended amount to their toothbrush. There is a need for a device or method to deliver a heavier amount of toothpaste granules compared to a conventional round nozzle, without requiring users to change their habits. Summary of the Invention

[0004] In one embodiment, a nozzle for dispensing an oral care composition includes an orifice having a central axis and fins partially blocking the orifice, wherein each fin has an upper surface and a lower surface. The center of the orifice may be blocked. The nozzle may include an axial extrusion region and an off-axis extrusion region. The upper surface of each fin may be located distal to the orifice.

[0005] In one embodiment, a component includes a nozzle, a tube, and a top cap configured to be coupled to the tube.

[0006] In one embodiment, a method of dispensing an oral care composition includes extruding the oral care composition through a nozzle, wherein at least a portion of the oral care composition is extruded off-axis from the central axis of the orifice. Attached Figure Description

[0007] Although this specification concludes by specifically pointing out and clearly claiming the claims of the invention, it is believed that the invention will be better understood by the following description taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a top view of an example implementation of the nozzle.

[0008] Figure 2 yes Figure 1A perspective view of the nozzle.

[0009] Figure 3 yes Figure 1 Side view of the nozzle.

[0010] Figure 3A It is along Figure 3 The line 3A-3A is cut off. Figure 1 A cross-sectional view of the nozzle.

[0011] Figure 4 This is a perspective view of an example implementation of the nozzle.

[0012] Figure 5 yes Figure 4 A top view of the nozzle.

[0013] Figure 6 This is a perspective view of an example implementation of the nozzle.

[0014] Figure 7 yes Figure 6 A top view of the nozzle.

[0015] Figure 8 This is a perspective view of an example implementation of a flip-top cover.

[0016] Figure 9 This is a perspective view of an example implementation of the pipe.

[0017] Figure 10 It is a perspective view of a nozzle with a circular, unobstructed orifice.

[0018] Figure 11 This is a perspective view of an example embodiment of a nozzle with five fins and no central hub.

[0019] Figure 12 This is a perspective view of an example embodiment of a nozzle with five inclined fins and no central hub.

[0020] Figure 13 This is a perspective view of an example implementation of a nozzle with five fins and a central hub.

[0021] Figure 14 This is a perspective view of an example implementation of a nozzle with five inclined fins and a central hub.

[0022] Figure 15 This is a perspective view of an example embodiment of a nozzle with propeller-shaped fins.

[0023] Figure 16A to Figure 16G These are photos of toothpaste droplets formed by various nozzles.

[0024] Figure 17A to Figure 17GThese are photos of toothpaste droplets formed by various nozzles.

[0025] Figures 18A to 18G These are perspective, top, bottom, left, right, front, and rear views of an example implementation of the nozzle. Detailed Implementation

[0026] Embodiments of the present invention relate to a partially blocked nozzle that provides improved paste weight during use. The nozzle also provides the user with an improved aesthetic experience, an improved sensory experience, and improved dispersion of the dispensed oral care composition. Embodiments of the present invention also relate to oral care assemblies comprising a nozzle and a tube, and methods of manufacturing and using such assemblies.

[0027] It has been found that the shape of the nozzle orifice affects toothpaste pellet output in a variety of ways. Changing how the oral care composition exits the tube has a significant impact on both the physical pellets and the consumer's sensory experience. For example, creating multiple individual strips that join together at the orifice to form a pellet on the toothbrush head increases the surface area of ​​the resulting pellet. This, in turn, provides aesthetic benefits by changing the pellet shape from a simple cylinder to an aesthetically pleasing vortex. Alternatively, shearing the oral care composition immediately before brushing when dispensed onto the toothbrush appears to significantly affect the sensory experience, as it enhances flavor presentation, increases foaming, and improves dispersibility. Without being bound by theory, it is believed that shearing, pressure, and off-axis extrusion, whether individually or in combination, can lead to an increase in pellet weight, as discussed further below. Therefore, a nozzle according to one embodiment of the invention enhances the appearance of the pellets, increases the size and surface area of ​​the dispensed oral care composition, and positively influences the consumer's experience of flavor, foaming, and dispersibility. These changes can be aesthetically pleasing and deliver an amount of oral care composition closer to the recommended dosage. The improved paste properties and brushing experience are due to the interaction between the oral care composition and partially blocked orifices.

[0028] Although the following detailed description is given primarily in the context of tubes and nozzles for containing dental cleaning products, it should be understood that nozzles or tubes may be used to contain and dispense other oral care or personal care products in which an increased amount of product, an improved sensory experience, or improved product dispersion is expected compared to a conventional round orifice.

[0029] The following chapter titles are provided solely for organizational and convenience purposes.

[0030] definition To more clearly define the terms used herein, the following definitions are provided. Unless otherwise indicated, the following definitions apply to this disclosure. If a term is used in this disclosure but is not specifically defined herein, the definition from IUPAC Compendium of Chemical Terminology, 2nd Edition (1997) may be applied, provided that the definition does not conflict with any other disclosure or definition applied herein, or render any claim to which the definition is applied uncertain or unenforceable.

[0031] As used herein, “connection” means “permanent connection” or “releasable connection”. The term “permanent connection” is understood to mean a configuration in which a first element is fixed to a second element such that the elements cannot normally be separated from each other without at least partially damaging one or both elements. The term “releasable connection” is understood to mean a configuration in which a first element is fixed to a second element such that the first element and the second element can be separated without damage or with minimal damage to the first element and the second element.

[0032] As used herein, the term "oral care composition" includes products that are not intended for systemic administration of a particular therapeutic agent during ordinary use, but rather to remain in the oral cavity for a sufficient duration to contact the tooth surface or oral tissues. Examples of oral care compositions include dental floss, toothpaste, teething gel, subgingival gel, lotion, mouthwash, mousse, foam, oral spray, lozenges, chewing tablets, chewing gum, teeth whitening strips, dental floss and floss coatings, breath freshening soluble strips, unit-dose compositions, fiber compositions, or denture care or adhesive products. Oral care compositions may also be incorporated into strips or films for direct application or attachment to oral surfaces (such as teeth whitening strips). Examples of lotion compositions include the lotion composition of U.S. Patent No. 11,147,753, and clogging lotions, such as the clogging oil-in-water emulsion of U.S. Patent No. 11,096,874. Examples of unit-dose compositions include the unit-dose composition of U.S. Patent Application Publication No. 2019 / 0343732.

[0033] Unless otherwise specified, as used herein, the term "dental cleaning composition" includes dental or subgingival pastes, gels, or liquid formulations. A dental cleaning composition may be a monophasic composition or a combination of two or more individual dental cleaning compositions. A dental cleaning composition may be in any desired form, such as deep streaks, light streaks, multilayers, pastes surrounded by gels, or any combination thereof. In dental cleaning compositions comprising two or more individual dental cleaning compositions, each composition may be contained in a physically separate dispenser compartment and dispensed side-by-side.

[0034] The “active ingredients and other ingredients” used herein may be categorized or described in accordance with their cosmetic and / or therapeutic benefits or their assumed mode of action or function. However, it should be understood that in some cases, the active substances and other ingredients used herein may provide more than one cosmetic and / or therapeutic benefit, or act or function via more than one mode of action. Therefore, the categorization herein is for convenience only and is not intended to limit the ingredients to the specific functions or activities listed.

[0035] As used herein, the term “substantially free” means that the composition contains no more than 0.05%, preferably no more than 0.01%, and more preferably no more than 0.001% of the specified material on a total weight basis.

[0036] As used herein, the term "substantially free of" means that the indicated material is not intentionally added to the composition, or preferably is not present at an analytically detectable level. This means a composition in which the indicated material is present only as an impurity among other intentionally added materials.

[0037] The term “oral hygiene program” or “program” can be used to describe the use of two or more separate and distinct steps of oral health care, such as toothpaste, mouthwash, dental floss, toothpicks, sprays, rinsing devices, and massagers.

[0038] Unless otherwise stated, although compositions and methods are described herein by way of “comprising” various components or steps, compositions and methods may also be “inherently composed of various components or steps” or “consisting of various components or steps”.

[0039] As used in this article, the word "or" when used as a conjunction for two or more elements means including either the element alone or a combination of the elements; for example, X or Y means X or Y or both.

[0040] As used herein, the articles “an” and “a” are understood to mean one or more of the materials protected or described in the claims, such as “oral care composition” or “bleaching agent”.

[0041] Unless otherwise specified, all measurements mentioned herein were performed at approximately 23°C (i.e., room temperature).

[0042] Several types of scopes are disclosed in respect of embodiments of the present invention. When any type of scope is disclosed or protected by claims, the purpose is to disclose or protect by claims every possible value that such scope can reasonably cover, including the endpoints of the scope and any sub-scopes and combinations thereof covered therein.

[0043] nozzle The size and shape of the nozzle help define the user's experience of dispensing the desired volume of toothpaste from the packaging. A nozzle according to one embodiment of the invention can provide several benefits. For example, it can increase the weight of the toothpaste particles to help deliver an optimal dose of oral care composition to the user. Oral care compositions can be formulated to provide specific amounts of active ingredients (e.g., fluoride) and aesthetic ingredients (e.g., for flavor or foaming). The increased weight of the toothpaste particles due to the use of the improved nozzle can result in superior foaming and flavor presentation, providing a pleasant brushing experience and leaving the mouth feeling clean and fresh compared to using less than the recommended amount of oral care composition. The aesthetics of the toothpaste particles can be improved through a swirling shape compared to conventional cylindrical particles. Due to the improved toothpaste particles, users may experience several differences during brushing. Some examples include improved foaming properties, a lighter, more palatable, and more creamy feel to the oral care composition, and improved dispersibility, resulting in a reduced amount of undispersed oral care composition at the end of the brushing session.

[0044] Figures 1 to 3A A nozzle 10 according to one embodiment of the invention is illustrated. In use, an oral care composition (such as toothpaste) is extruded through the nozzle orifice to the outside of the nozzle 10 (e.g., onto a toothbrush) to produce paste particles. The nozzle 10 may include a nozzle orifice 12 having a central axis 14. The nozzle orifice 12 may be defined by sidewalls 16. The sidewalls 16 may have a distal surface or edge 18, an inner surface 20, and an outer surface 22. The edge 18 may be in a plane orthogonal to the central axis 14 of the orifice 12. The edge 18 may be coplanar with the nozzle orifice 12. The thickness of the edge 18 may be in the range of about 0.25 mm to about 4 mm or about 0.5 mm to about 1.5 mm. The diameter of the orifice 12 may be about 8 mm, about 9 mm, about 10 mm, or about 7 mm to about 11 mm, or about 8 mm to about 10 mm, or about 8.5 mm to about 10 mm.

[0045] The nozzle orifice 12 may be partially blocked, for example, by one or more fins 24. Each fin 24 may extend from an inner end 26 to an outer end 28 and between a first side 30 and a second side 32. The fin 24 may also include an upper surface 34 and a lower surface 36. The fin 24 may be located proximal to, distal to, or in line with the orifice 12. In one embodiment, the entire upper surface 34 of the fin 24 may be located distal to the orifice 12, and the entire lower surface 36 may be located proximal to the orifice 12. In one embodiment, the upper surface 34 may be flat or arched (e.g., see...). Figure 6The lower surface 36 may be, for example, arched or flat (not shown). The fins 24 may be aligned with each other, or, for example, one or more fins of fin 24 may be located closer to or farther from another fin 24. At least a portion of the fin 24 extends above the orifice 12 to partially block the orifice 12. The fin 24 may also extend radially outward from the orifice 12. For example, the outer end 28 of the fin 24 may extend to the edge of the edge 18 of the sidewall 16. Figure 2 and Figure 3A As shown, in one embodiment, the fins 24 may extend above and below (or proximal and distal) the aperture 12.

[0046] Fin 24 creates openings 38 through which the oral care composition moves as it is extruded through nozzle 10. Openings 38 can be symmetrical or asymmetrical. Figure 4 and Figure 5 As best shown, these openings 38 may include an axial channel 40 and / or an off-axis channel 42. The axial channel 40 is a space extending distal to the nozzle orifice 12 to the distal end of the fin 24. The off-axis channel 42 corresponds to the axially outer side of the orifice 12 and extends to the outer end of the fin 24. For example, in Figure 5 In this configuration, the off-axis channel 42 extends distally from edge 18 to the top of fin 24, from the inner edge of edge 18 (orifice 12) to the outer edge of edge 18, and extends between the sides of fin 24. When the oral care composition is extruded, the composition moves through a portion of the axial channel 40 generally parallel to the central axis 14 of orifice 12 (arrow A1). Reference Figure 4 The off-axis channel 42 allows some of the extruded oral care composition to move axially away from the central axis 14 (arrow A2) of the orifice 12. Extruding the oral care composition around the fin 24 and through the off-axis channel 42 both shears and pressurizes the flow of the oral care composition. Surprisingly, shearing and pressurization have been found to result in an increase in granule weight. In particular, the product shearing and reshaping appear to enhance and amplify flavor presentation, which provides an improved consumer experience when brushing with a product extruded through this type of shaped orifice.

[0047] refer to Figure 2 and Figure 3AIn one embodiment, the nozzle 10 may include a hub 44 connecting the fins 24. In one embodiment, the hub 44 may be centered relative to the orifice 12 such that the longitudinal axis of the central hub 44 is coaxial with the central axis 14 of the orifice 12. The size and shape of the hub may vary. For example, the upper surface 46 of the hub 44 may be circular. The maximum diameter of the central hub 44 may be in the range of, for example, about 0.5 mm to about 5 mm, about 1 mm to about 4 mm, or about 2.5 mm to about 3.5 mm. The central hub 44 may have a conical shape with a lower tip 48, such as... Figure 3A Ideally, this is to guide the flow of the oral care composition and facilitate lateral extrusion. In another example, the central hub may be cylindrical or have a flat lower surface. Similar to fin 24, the central hub 44 may be raised relative to orifice 12. This height also facilitates lateral extrusion of the oral care composition during dispensing. In one example, the upper surface 46 of the central hub 44 may be located distal to orifice 12, and the tip 48 or lower surface of the central hub 44 may be located proximal to orifice 12. The central hub 44 may be in the same plane or a different plane from fin 24. In another embodiment, the fins 24 may be spaced apart such that they do not contact each other (e.g., no central hub).

[0048] Several parameters, including fin width, thickness, and height relative to the orifice, have been found to affect the weight and aesthetics of the toothpaste particles. Unbound by theory, it is believed that recrystallization of the oral care composition as it is extruded by the consumer results in an increase in the effective particle diameter, which in turn increases the dosage. Given that benefits such as caries prevention, whitening, cleaning, gingivitis relief, and fresh breath can be dose-dependent, this property provides an advantage to consumers. This is particularly important when using smaller toothbrush heads (such as those found on most electric toothbrushes), where the usable surface area for dispensing the product is limited compared to most manual brush heads.

[0049] The off-axis extrusion region and the total restricted orifice area can vary. The off-axis extrusion region can be 0 mm. 2 Approximately 1cm 2 0mm 2 approximately 25mm 2 Approximately 0mm 2 Approximately 5mm 2 or approximately 3.9mm 2 Approximately 16.4mm 2 Within the range. In one embodiment where the fins are fan-shaped or disc-shaped, the off-axis extrusion region can be approximated by the product of the following: the number of fins (n), the distance by which the top of the fin protrudes distally beyond the orifice, and the approximate width (b) of the opening between the fins. The approximate width (b) of the opening between the fins can be calculated according to the following equation: Where “r” is the radial distance from the center of the orifice to the outer circle defined by the end of the fin, “n” is the number of fins, and “a” is the fin width at the inner edge of the orifice. Figure 5 The symbols “r”, “a”, and “b” are shown in an example implementation. The off-axis extrusion region can be divided into a low-pressure region and a high-pressure region.

[0050] The total orifice surface area (e.g., defined by fins 24 and optional hub 44) may be in the range of about 10% to about 90%, about 40% to about 60%, 38.3% to about 58.9%, about 44.6% to about 49.6%, about 45% to about 50%, or about 46% to about 48% of the total orifice surface area.

[0051] The number of fins 24 can vary. The nozzle 10 may have, but is not limited to, 1 fin, 2 fins, 3 fins, 4 fins, 5 fins, 6 fins, 7 fins, or more than 7 fins. The nozzle 10 may have, but is not limited to, 1 to 10 fins, 3 to 7 fins, or 4 to 6 fins.

[0052] The length of fin 24 can vary. Fins 24 can have the same length or different lengths. Figure 1 The length L of the fin 24 is shown. In some embodiments, the length or maximum length of the fin 24 may be in the range of about 1 mm to about 7 mm, about 3.25 mm to about 4.5 mm, or about 3.5 mm to about 4 mm.

[0053] The width of fin 24 can be varied. Fins 24 can have the same width or different widths. The width of fin 24 can be constant or can vary along fin 24. The variation in fin width can be constant or variable. For example, as... Figure 1 As shown, the sides of fin 24 taper linearly inward from their maximum width W toward the central hub 44. In another example, the sides of fin 24 may be curved outward or inward. In some embodiments, the width or maximum width of fin 24 may be from about 0.5 mm to about 6 mm, from about 1 mm to about 5 mm, from about 3 mm to about 5 mm, from about 3.25 mm to about 4.5 mm, or from about 3.25 mm to about 4 mm.

[0054] The thickness of fin 24 can be varied. Fin 24 can have the same thickness or different thicknesses. The thickness of fin 24 can be constant or can vary along fin 24. For example, as Figure 3AAs shown, the thickness of the fin 24 decreases from the maximum thickness T toward the central hub 44. In some embodiments, the thickness or maximum thickness of the fin 24 may be in the range of about 0.1 mm to about 10 mm, about 0.25 mm to about 5 mm, about 0.25 mm to about 2 mm, or about 0.5 mm to about 1.5 mm.

[0055] The height of fin 24 relative to orifice 12 is variable. The height of fin 24 can be measured from the lower surface 36 of fin 24 to edge 18, or, if no edge exists, to the farthest edge of orifice 12. Figure 3A The height E of fin 24 is shown. In some embodiments, the height, or maximum height, can range from about -5 mm to about 5 mm, from about -2 mm to +1 mm, from about -1 mm to about 0 mm, from about -0.5 mm to about 0 mm, and from about 0 mm to about 0.5 mm. Reference Figure 4 and Figure 5 An example embodiment of the nozzle 10 is shown, in which the fins 24 are raised above the nozzle orifice 12.

[0056] The shape of the fin 24 can be varied. In another embodiment, the fin can have a triangular, rectangular, or curved shape, or it can be shaped like a fan blade or propeller. Figure 1 and Figure 5 As shown, in one embodiment, the fin 24 may be fan-shaped or disc-shaped. The fin 24 may extend from the edge 18 above the aperture 12. The fin 24 may be coupled to the central hub 44. The fin 24 and the central hub 44 may form a wheel shape. In another embodiment, the fin 24 may be arched and coupled to the central hub 44 to form a dome shape (e.g., as shown). Figure 6 (As shown). In another embodiment, fin 24 may have an end that is not coupled to another portion of nozzle 10. In an embodiment excluding the edge, fin 24 may be coupled to nozzle 10 adjacent to the edge of orifice 12 and extend distally to orifice 12. Fin 24 may be relative to orifice 12 (e.g. Figure 12 and Figure 14 The central axis 14 (as shown) is tilted at a certain angle, or it can be perpendicular to the central axis 14 (as shown). Figure 2 and Figure 3A (As shown).

[0057] refer to Figure 6 and Figure 7In another embodiment, the fin 24 may be shaped similarly to a curved fan blade. For example, the fin 24 may have a longitudinal portion 50, an axial portion 52, and a transition portion 54 therebetween. The longitudinal portion 50 may be coupled to an edge 18 and extend distally from the edge 18. In an embodiment excluding the edge, the longitudinal portion 50 may be coupled to the nozzle 10 adjacent to the edge of the orifice 12 and extend distally from the orifice 12. In the illustrated embodiment, the longitudinal portion 50 does not extend above the orifice 12. In another embodiment, the longitudinal portion 50 may extend above the orifice 12.

[0058] The axial portion 52 may extend toward the central axis 14 of the orifice. In other words, the axial portion 52 may extend above the orifice 12 and partially block it. The axial portion 52 may extend to the central hub 44 (if present). In an embodiment where the central hub is absent, the end of the axial portion 52 may be freely suspended over the orifice 12, or may engage with the axial portion 52 of another fin 24. The axial portion 52 may be tilted at an angle relative to the central axis 14 of the orifice 12. The tilt angle of the axial portion 52 may vary along its length. The tilt angle may be from about 0° to about 90°, between about 0° and about 60°, between about 15° and about 90°, between about 40° and about 50°, or may be about 0° or about 45°. In another embodiment, the axial portion 52 may be perpendicular to the central axis 14 of the orifice 12.

[0059] A transition portion 54 extends between the longitudinal portion 50 and the axial portion 52. The transition portion 54 may be curved and twisted. At least a portion of the transition portion 54 may be inclined relative to the central axis 14 of the orifice 12. In various embodiments, the transition portion 54 may partially block the orifice 12 or may not block the orifice 12.

[0060] When the first side surface 30 and the second side surface 32 of the fin 24 are not coplanar, the first side surface 30 and the second side surface 32 may define a leading edge and a trailing edge, respectively. The trailing edge at the axial portion 52 may be located distal to the leading edge at the axial portion 52. When extruded through the nozzle, the oral care composition may first contact the leading edge and then the trailing edge.

[0061] The width and thickness of the longitudinal portion 50, the axial portion 52, and the transition portion 54 can vary. For example, the thickness of the transition portion at its trailing edge can be greater than the thickness of the transition portion at its leading edge. The thickness of the longitudinal portion 50 can be greater than the thickness at the end of the axial portion 52. Similarly, the width of the longitudinal portion 50 can be greater than the width at the end of the axial portion 52.

[0062] Top cover According to some implementation schemes, the nozzle can be connected to the top cover or integrated with the top cover. For example... Figure 8 As shown, in one embodiment, the top cover may be a hinged top cover 56 having a cover 58 hinged to a top cover body 60. The top cover body 60 may be configured to be releasably connected to a container or pipe.

[0063] The form of the top cap can be varied. The nozzle can serve as the top cap on the pipe. Figures 1 to 7 The example nozzle shown is depicted as having a Fiss-like skirt extending proximally from the nozzle. For example, as... Figure 3A As shown, the skirt 62 may flare slightly outward from the nozzle 10 to the proximal end of the skirt 62. The outer surface of the skirt 62 may be smooth or textured, such as ridged. The skirt may, for example, be removably connected to the tube using internal threads 64.

[0064] Alternatively, the nozzle may be separate from the top cover. For example, the nozzle may be connected to or integrated with a pipe, as discussed below. In such embodiments, the top cover may be a conventional top cover, such as a screw-on top cover (e.g., a Fiss top cover).

[0065] Tube Oral care components may include tubes, nozzles, and caps. Figure 9 An example of a reservoir or tube 66 and a nozzle, such as nozzle 10, according to an example embodiment is illustrated. Tube 66 may contain an oral care composition, such as toothpaste. The longitudinal axis of the tube or component, the central axis 14 of the orifice 12, and the flow direction of the oral care composition may, for example, be parallel or coaxial. Figure 9 As shown, nozzle 10 may be integral with or coupled to tube 66. For example, if nozzle 10 is coupled to tube 66, nozzle 10 may extend from insert 68 fixed inside tube 66. In other embodiments, nozzle 10 may be coupled to a top cover (e.g., Figure 8 The top cover 56 is integral with or connected to the top cover. When the top cover is connected to or otherwise closed with the tube 66, the tube 66 is sealed to prevent leakage of the contents of the tube under normal conditions.

[0066] The tube 66 may include a tube body 70, which can be squeezed by a user to expel the contained oral care composition through the nozzle 10. The tube body 70 may have a shoulder 72. In embodiments where the nozzle 10 is not integral with the tube 66, the tube 66 may include a tube orifice. In embodiments where the nozzle 10 is integral with the tube 66, a nozzle orifice 12 may serve as a tube orifice. When the tube is squeezed, the contents of the tube pass through the tube orifice and / or the nozzle orifice 12 to the outside of the assembly (e.g., to a toothbrush). The tube body 70 may be sealed at one end (such as the end of the tube 66 opposite the shoulder 72 or the tube orifice) by a coiled seal 74.

[0067] The tube 66 may be configured to be releasably connected to a top cover (e.g., top cover 56). For example, the tube 66 and the top cover may include corresponding threads. The top cover may include threads (e.g., Figure 3A The cap (64) is configured to releasably engage with a thread (not shown) on the tube 66. In one embodiment, the tube 66 may include threads on its outer surface, and the cap may include threads on its inner surface. In another embodiment, the cap may be configured to snap onto the tube 66.

[0068] The tube, nozzle, and cap may be made of the same material or different materials. The tube, nozzle, and cap may be made of any material known to those skilled in the art that provides adequate storage for the dental cleaning agent or other product contained within the tube. The materials constituting the components should not react with the components constituting the contents, so as not to render the contents unsafe or otherwise unsuitable for consumer use. Of course, these materials should also be durable enough to withstand normal consumer use without leakage, tearing, or breakage. These materials may be able to protect the oral care composition from environmental variables (e.g., humidity or light) that could damage the composition within its expected shelf life.

[0069] Non-limiting examples of suitable materials for containing dental cleaning products, which may be used to make their components or parts, include polyethylene, such as low-density polyethylene (“LDPE”), linear low-density polyethylene (“LLDPE”), medium-density polyethylene (“MDPE”), and high-density polyethylene (“HDPE”), ethylene acrylate (“EAA”), foil, such as aluminum foil, or any combination of the above materials, for example, formed as a laminate. The thickness of the sidewalls of the tube body may be, for example, from about 0.1 mm to about 0.4 mm, or about 0.3 mm. Thicker or thinner sidewalls may be provided, but it is believed that this would not be particularly cost-effective and would not necessarily provide additional dispensing benefits. The material may be a laminate.

[0070] While the description herein is given primarily in the context of a tube having a single internal chamber, it should be understood that the body of the invention can be divided into multiple chambers, each containing a component portion of the composition. Such embodiments are within the scope of the invention.

[0071] Flavor release Using a nozzle as described herein to dispense toothpaste can result in improved sensory properties. For example, flavor release or presentation can be enhanced when using a nozzle according to an embodiment of the invention compared to a conventional nozzle with an unobstructed circular orifice of the same diameter. Flavor release can be improved either in the paste particles themselves (e.g., pure toothpaste) or in a slurry. For example, flavor release can be improved when toothpaste becomes a slurry during brushing compared to toothpaste dispensed from a conventional circular orifice. Flavor release can be measured by the sum of the peak areas of the total ion chromatogram (TIC) of the flavor components measured in headspace.

[0072] When extruded from a nozzle according to one embodiment of the invention, after about 15 seconds, the increase in the overall flavor release (pure) of the dental cleaning agent may be, for example, at least 10%, at least 20%, at least 30%, at least 40%, at least 50%, at least 60%, or at least 70% higher than the flavor intensity measured when the same dental cleaning agent from the same tube is extruded through a conventional round orifice, or in the range of about 10% to about 90% or about 15% to about 75%. The increase in the overall flavor release (pure) at about 30 seconds may be, for example, at least 10%, at least 20%, at least 30%, at least 40%, at least 50%, at least 60%, or at least 70%, or in the range of about 10% to about 90% or about 15% to about 85%. The increase in the overall flavor release (pure) at about 60 seconds may be, for example, at least 10%, at least 20%, at least 30%, at least 40%, at least 50%, at least 60%, or at least 70%, or in the range of about 10% to about 90% or about 40% to about 50%.

[0073] The increase in total flavor release (slurry) at about 15 seconds may be, for example, at least 10%, at least 20%, or at least 30%, or in the range of about 5% to about 40%, about 10% to about 35%, about 15% to about 30%, or about 18% to about 27%.

[0074] The effect on flavor release can also be measured for individual flavor components. Flavor components may include, but are not limited to, α-pinene, β-pinene, limonene, eucalyptol, menthone, isomenthone, menthyl acetate, menthol, carvone, anethole, myrcene, p-cymene, and combinations thereof. Some individual components may have a greater increase in flavor release compared to other components. For example, the change in flavor release of α-pinene over up to about 60 seconds may be at least 50%, at least 100%, or at least 200%, or in the range of about 50% to about 400%. The change in flavor release of β-pinene over up to about 60 seconds may, for example, be at least 50%, at least 100%, or at least 250%, or in the range of about 50% to about 350%. In another example, the change in flavor release of limonene over up to about 60 seconds may be at least 60%, at least 150%, or at least 300%, or in the range of about 60% to about 425%. For eucalyptol, the flavor release change over a maximum of about 60 seconds may be, for example, at least 30%, at least 75%, or at least 100%, or in the range of about 30% to about 130%. The flavor release change of menthone over a maximum of about 60 seconds may be, for example, at least 25%, at least 50%, or at least 75%, or in the range of about 25% to about 100%. In another example, the flavor release change of isomenthone over a maximum of about 60 seconds may be at least 10%, at least 50%, or at least 70%, or in the range of about 10% to about 85%. For menthyl acetate, the flavor release change over a maximum of about 60 seconds may be, for example, at least 10%, at least 50%, or at least 100%, or in the range of about 10% to about 120%. The flavor release change of menthol over at least about 60 seconds may be, for example, greater than 0%, at least 25%, or at least 60%, or in the range of about -5% to about 75%. In another example, the flavor release change of carvone over a maximum of about 60 seconds may be at least 10%, at least 50%, or at least 70%, or in the range of about 10% to about 80%. For anethole, the flavor release change over a maximum of about 60 seconds may be, for example, at least 20%, at least 50%, or at least 70%, or in the range of about 20% to about 80%. For individual compounds, in a slurry, the flavor release change over a maximum of about 30 seconds may be greater than 0%, at least 30%, or at least 50%, or in the range of about -7% to about 65%.

[0075] Oral care composition Oral care compositions may be in any suitable form, such as solid, liquid, powder, paste, or combinations thereof. Oral care compositions may be dental cleaning agents, teeth whitening gels, subgingival gels, mouthwashes, mousses, foams, oral sprays, lozenges, chewing tablets, chewing gum, teeth whitening strips, dental floss and floss coatings, breath freshening soluble strips, or denture care or adhesive products. Components of dental cleaning agent compositions may be incorporated into film, strip, foam, or fiber-based dental cleaning agent compositions.

[0076] Oral care compositions may include a variety of active and inactive ingredients, such as, but not limited to, hops extract, dicarboxylic acid, calcium ion source, water, fluoride ion source, metal source (such as tin ion source and / or zinc ion source), antibacterial agent, bioactive material, potassium source, quaternary ammonium compound, polyphosphate, humectant, surfactant, buffer, monodentate ligand, polydentate ligand, thickener, abrasive, amino acid (such as neutral or basic amino acid), whitening agent, and any combination thereof. Oral care compositions may contain one or more of the active and inactive ingredients as described in U.S. Patent No. 11,696,881 or U.S. Patent Publication No. 2021 / 0346259, each of which is incorporated herein by reference in its entirety.

[0077] The nozzles or components described herein are particularly suitable for use with oral care compositions with viscosities ranging from 150,000 centipoise to 850,000 centipoise (“cP”). This invention describes methods for evaluating viscosity. The viscometer is a Brookfield. ® The viscometer, model DV-I Prime, features a Brookfield “Helipath” stand. Place the viscometer on the Helipath stand and level it via the spirit level. Attach the E-mandrel and set the viscometer to 2.5 RPM. Remove the mandrel to zero the viscometer and reinstall the E-mandrel. Then, before starting the measurement, lower the mandrel until the crossbar is partially immersed in the paste. Simultaneously turn on the power switches on both the viscometer and the lifting stand to allow the mandrel to begin rotating downwards. Set the timer to 48 seconds and simultaneously turn on the timer, motor, and lifting stand. Obtain the reading after 48 seconds. The reading is in cP.

[0078] Oral care composition form Suitable compositional forms include emulsion compositions such as the emulsion composition of U.S. Patent No. 11,147,753 (the entire contents of which are incorporated herein by reference), unit-dose compositions such as the unit-dose composition of U.S. Patent Application Publication No. 2019 / 0343732 (the entire contents of which are incorporated herein by reference), no-rinse oral care compositions, clogging emulsions such as the clogging oil-in-water emulsion of U.S. Patent No. 11,096,874 (the entire contents of which are incorporated herein by reference), dental cleaning compositions, mouthwash compositions, mouthwash compositions, teeth whitening gels, subgingival gels, mouthwashes, mousses, foams, oral sprays, tablets, chewing tablets, chewing gum, teeth whitening strips, dental floss and floss coatings, breath freshening soluble strips, denture care products, denture adhesive products, or combinations thereof.

[0079] method The oral care compositions described herein can produce beneficial effects on oral health, such as treating, reducing, and / or preventing tooth decay, cavities, gingivitis, and / or combinations thereof, and / or whitening teeth, removing stains from teeth, and / or preventing stain buildup when applied to the oral cavity. For example, a user may dispense at least one inch of a suitable strip or granule of the oral care composition as described herein into an oral care appliance such as a toothbrush, applicator, and / or mouth tray, and apply it to the oral cavity and / or teeth. Dispensing the oral care composition using a nozzle as described above may include axial extrusion and off-axis extrusion of the oral care composition.

[0080] It can instruct users to brush their teeth thoroughly for at least 30 seconds, at least one minute, at least 90 seconds, or at least two minutes, at least once, at least twice, or at least three times a day. It can also instruct users to spit out the oral care composition after brushing.

[0081] Users may also be instructed to rinse with the mouthwash and / or mouthwash composition after or in place of brushing. Users may be instructed to rinse thoroughly with the oral care composition for at least 30 seconds, at least one minute, at least 90 seconds, or at least two minutes, at least once, at least twice, or at least three times a day. Users may also be instructed to spit out the oral care composition after the process is complete.

[0082] Oral care compositions according to embodiments of the present invention can be used to treat, reduce, and / or prevent dental caries, cavities, gingivitis, and / or combinations thereof. Oral care compositions according to embodiments of the present invention can be used to provide beneficial whitening effects, such as whitening teeth, removing stains from teeth, and / or preventing stain buildup on teeth.

[0083] Oral care compositions may include primary packaging, such as tubes, bottles, and / or drums. The primary packaging may be placed within secondary packaging, such as cartons, shrink wrap, etc. Instructions for use of the oral care composition may be printed on the primary and / or secondary packaging. The scope of this method is intended to include instructions provided by the manufacturer, distributor, and / or producer of the oral care composition.

[0084] If the oral care composition is toothpaste, the user can be instructed to dispense the toothpaste from the tube.

[0085] The user may be instructed to apply a portion of toothpaste to the toothbrush. This portion of toothpaste may be in any suitable shape, such as a strip, a pea-sized amount, or various other shapes that will fit onto any mechanical and / or manual brush head. The user may be instructed to apply a strip of toothpaste at least about 1 inch, at least about 0.5 inches, at least 1 inch, and / or at least 0.5 inches to the bristles of the toothbrush (such as a soft-bristled toothbrush).

[0086] Users can be instructed to apply a pea-sized or rice-grain-sized amount of toothpaste to the bristles of the toothbrush, such as when used by children under 6 years of age and / or under 2 years of age.

[0087] Users can be instructed to brush their teeth for at least approximately 30 seconds, at least approximately 1 minute, at least approximately 90 seconds, at least approximately 2 minutes, at least 30 seconds, at least 1 minute, at least 90 seconds, and / or at least 2 minutes.

[0088] It can instruct users to brush their teeth thoroughly and / or as directed by a doctor and / or dentist.

[0089] Users can be instructed to brush their teeth after each meal. Users can be instructed to brush their teeth at least once, at least twice, and / or at least three times a day. Users can be instructed to brush their teeth no more than three times a day, for example, to prevent Sn staining. Users can be instructed to brush their teeth in the morning and / or before going to bed at night.

[0090] Because the toothpaste composition contains ingredients that are not suitable for ingestion, such as fluoride, the user may be instructed not to swallow it. However, in the case of oral care compositions that contain hops but not fluoride, it may not be necessary to instruct the user not to swallow the toothpaste. The user may be instructed to spit out (or cough up) the toothpaste composition after stopping the brushing cycle.

[0091] Users may be instructed to use mouthwash at least once a day, at least twice a day, and / or at least three times a day.

[0092] Users can be instructed to use the mouthwash composition after using toothpaste and / or dental floss.

[0093] The user can be instructed to rinse their mouth with a portion of mouthwash for a period of time, such as between their teeth. The user can also be instructed to rinse vigorously with a portion of mouthwash.

[0094] Users can be instructed to use approximately 5 mL to approximately 50 mL, approximately 10 mL to approximately 40 mL, 10 mL, 20 mL, 25 mL, 30 mL, 40 mL, 2 teaspoons, and / or 4 teaspoons of mouthwash.

[0095] Users may be instructed to rinse their mouths with mouthwash for at least approximately 30 seconds, at least approximately 1 minute, at least approximately 90 seconds, at least approximately 2 minutes, at least 30 seconds, at least 1 minute, at least 90 seconds, and / or at least 2 minutes.

[0096] Because the mouthwash composition contains ingredients that are not suitable for ingestion, such as fluoride, the user may be instructed not to swallow it. However, in the case of oral care compositions that contain hops but not fluoride, it may not be necessary to instruct the user not to swallow the mouthwash. The user may be instructed to spit out (or cough up) the mouthwash composition after stopping the rinsing cycle.

[0097] Instructions for use of oral care compositions such as toothpaste compositions and / or mouthwashes may vary based on age. For example, one set of instructions may be provided for adults and children aged at least 6 years or at least 2 years, while a second set of instructions may be provided for children aged 6 years or less.

[0098] Additionally, as described herein, oral care compositions can be used to reduce the number and / or intensity of white patches on teeth that may be attributable to the presence of dental caries in the oral cavity. Alternatively, oral care compositions as described herein can be used to reduce redness, swelling, tenderness, and / or edema of the gingiva at the gingival line immediately adjacent to the tooth surface (which may be attributable to the presence of gingivitis in the oral cavity).

[0099] combination A. A nozzle for dispensing an oral care composition, the nozzle comprising: An orifice having a central axis; and Fins, wherein the fins partially block the orifice, wherein each of the fins has an upper surface and a lower surface.

[0100] B. According to the nozzle disclosed in A, the center of the orifice is blocked.

[0101] C. According to the nozzle disclosed in A or B, the nozzle further includes a central hub, wherein the fins are coupled to the central hub.

[0102] D. According to the nozzle disclosed in A, wherein the fins do not contact the central hub.

[0103] E. A nozzle disclosed in any one of A to D, wherein the upper surface of each of the fins is located distal to the orifice.

[0104] F. A nozzle disclosed in any one of A to E, wherein the lower surface of each of the fins is located near the orifice.

[0105] G. A nozzle disclosed in any one of A to E, wherein the lower surface of each of the fins is located distal to the orifice.

[0106] H. The nozzle disclosed according to any one of A to G further includes an axial extrusion region and an off-axis extrusion region.

[0107] I. The nozzle disclosed in any one of A to H, the nozzle further comprising a sidewall defining the orifice, wherein the sidewall includes an inner wall, an edge, and an outer wall.

[0108] J. According to the nozzle disclosed in I, each of the fins further includes an outer end of the outer wall extending into the sidewall.

[0109] K. According to the nozzle disclosed in I, wherein the lower surface of each fin in the fin extends from the inner surface of the sidewall.

[0110] L. A nozzle disclosed according to any one of A to K, wherein the fins are inclined relative to the central axis of the orifice.

[0111] M. A nozzle disclosed according to any one of A to L, wherein the distance between the lower surface of the fin and the orifice varies along the length of the fin.

[0112] N. The nozzle disclosed according to any one of A to M, wherein the fins are fan-shaped.

[0113] O. A nozzle disclosed according to any one of A to N, wherein each of the fins includes a longitudinal portion extending distal to the orifice, an axial portion extending above the orifice, and a transition portion connecting the longitudinal portion and the axial portion.

[0114] P. A component comprising: The nozzle disclosed according to any one of A to O; pipe; and A top cover, which is configured to be connected to the tube.

[0115] Q. According to the components disclosed in P, the nozzle is integral with the top cover.

[0116] R. According to the components disclosed in P, the nozzle is integral with the tube.

[0117] S. According to the components disclosed in P, wherein the nozzle is connected to the tube.

[0118] T. According to the components disclosed in S, the insert includes the nozzle and the insert is positioned in the tube.

[0119] U. According to the components disclosed in P, the top cover is screwed onto the tube.

[0120] V. According to the components disclosed in P, wherein the top cover is fastened to the tube.

[0121] W. A method of dispensing an oral care composition, the method comprising: The oral care composition is extruded through a nozzle disclosed in any one of A to O, wherein at least a portion of the oral care composition is extruded off-axis from the central axis of the orifice.

[0122] X. The method disclosed in W, wherein the components include the nozzle and a tube containing the oral care composition, and extruding the oral care composition includes applying pressure to the tube. Example

[0123] The following embodiments further illustrate the invention, and these embodiments should not be construed in any way as limiting the scope of the invention. After reading this specification, various other aspects, modifications, and equivalents thereof may be proposed to those skilled in the art without departing from the spirit of the invention or the scope of the appended claims.

[0124] Weight measurement evaluation procedure 1. Weigh the manual toothbrush (Anchor, clustered white toothbrush, p / n 000-10923 / A) on an analytical balance capable of recording at least four decimal places (e.g., Mettler Toledo XS205).

[0125] 2. Using consistent time and pressure, squeeze the complete Crest ProHealth paste from one end of the brush head to the other onto the toothbrush for dispensing.

[0126] 3. Place the entire toothbrush back on the balance and record the weight of the toothpaste in grams.

[0127] 4. Evaluate each prototype using repeated weight measurements, in triplicate. Calculate the mean and standard deviation for each set of replicates.

[0128] Discussion on evaluation by weight measurement method The amount of material dispensed through the orifice is controlled by the following dependent variables: dispensing pressure (increased pressure leads to increased dispensing amount), dispensing time (increased time leads to increased dispensing amount), and orifice diameter (increased diameter leads to increased dispensing amount), and by the following independent variables: material viscosity and material thixotropy (the shear-thinning property of a material, where a decrease in viscosity or an increase in thixotropy leads to increased dispensing amount when all other variables remain constant). The various nozzles of the present invention described below are compared with a control nozzle having a diameter of 9.0 mm and no obstruction. The nozzles of the present invention used in this evaluation have non-tilted (i.e., 0° angle) fins. An unexpected result of the partially blocked orifice described herein is that by reducing the effective orifice diameter, while including design parameters that guide the material flow off-axis, the amount of pressure required to dispense material increases, thereby increasing the amount of material dispensed.

[0129] The variables are described below. Unless otherwise described in Tables 1 to 7, the nozzles 1A to 7E of the present invention each have the characteristics shown in Table A. The orifice diameter is defined as the width of the orifice from one side of the edge to the other, as measured through the center.

[0130] Table A. Features of nozzles 1A to 7E of the present invention Table 1 shows the results for nozzles 1A to 1F of the present invention, which have different fin widths and therefore different restriction percentages. All other variables were kept constant. The results in Table 1 show that all nozzles 1A to 1F of the present invention passed, except for nozzle 1F on a manual toothbrush.

[0131] Table 1. Evaluation by weight measurement method for different fin widths Table 2 shows the results for nozzles 2A to 2G of the present invention with different fin heights. All other variables were kept constant. The results in Table 2 show that all nozzles 2A to 2G of the present invention pass both manual and electric toothbrushes.

[0132] Table 2. Evaluation by weight measurement method for different fin heights Table 3 shows the results for nozzles 3A to 3D of the present invention, which have different center hub diameters and therefore different restriction percentages. All other variables were kept constant. The results in Table 3 show that all nozzles 3A to 3D of the present invention pass for both manual and electric toothbrushes.

[0133] Table 3. Weight Measurement Evaluation for Different Diameters of Center Hub

[0134] Table 4 shows the results for nozzles 4A to 4C of the present invention, which have different orifice diameters and therefore different restriction percentages. All other variables were kept constant. The results in Table 4 show that nozzles 4A to 4C of the present invention passed, except for nozzle 4A on a manual toothbrush.

[0135] Table 4. Evaluation by weight measurement method for different diameters of obstructed orifices

[0136] Table 5 shows the results for nozzles 5A to 5C of the present invention with different nominal orifice diameters. All other variables were kept constant. The percentage of limitation for each nozzle 5A to 5C of the present invention is 0% (i.e., unobstructed orifice). The results in Table 5 show that nozzle 5A of the present invention failed for both manual and electric toothbrushes.

[0137] Table 5. Evaluation by weight measurement for different diameters of unobstructed orifices

[0138] Table 6 shows the results for nozzles 6A to 6C of the present invention, which have different numbers of fins and therefore different restriction percentages. All other variables were kept constant. The results in Table 6 show that nozzles 6A to 6C of the present invention passed, except for nozzle 6A on a manual toothbrush.

[0139] Table 6. Evaluation by weight measurement method for different numbers of fins

[0140] Table 7 shows the results for nozzles 7A to 7E of the present invention with different restriction percentages and different numbers of fins. All other variables were kept constant. The results in Table 7 show all nozzles of the present invention 7A to 7E except for nozzle 7A on a manual toothbrush.

[0141] Table 7. Evaluation by weight measurement for different percentage limits

[0142] In addition, the Fiss top cover and the flip-top top cover were tested. The characteristics of both top cover styles are the same as those in Table A. All other variables remained constant. Both top cover styles passed tests for both manual and electric toothbrush heads.

[0143] Paste Appearance Evaluation Procedure 1. Dispense a whole tube of cream onto a manual or electric brush head by dispensing along the entire length of the brush head.

[0144] 2. Capture images of the obtained ointment particles and evaluate the following: a. The ability of a strip to remain cohesive within a paste pellet without breaking apart. b. The ability of the paste particles (and all strips) to remain adhered to the brush head. c. The paste particles appear compact and do not overflow from the brush head. d. The paste has a pleasing appearance; it is smooth, and the strips do not start or stop too abruptly.

[0145] If all conditions 2(a) to (d) are met, the sample is considered to have passed.

[0146] Aesthetic Evaluation and Discussion of Paste Particles The impact of nozzle design on the aesthetics of the paste particles was evaluated. The nozzles 1A to 7E of the present invention discussed above were compared with a control nozzle having a diameter of 9.0 mm and being unobstructed. The unintended consequence of dividing a single cylindrical paste particle into multiple strips was the creation of swirling paste particles with different strips, yet still cohesive and adhering to the brush head. This type of paste particle appearance is pleasing to the eye and has the added benefit of increased surface area, which further enhances the aesthetic experience of the paste.

[0147] Table 8 shows the results for nozzles 1A to 1F of the present invention with different fin widths. All other variables were kept constant. The results in Table 8 show that all nozzles 1A to 1F of the present invention passed, except for nozzle 1E on a manual toothbrush.

[0148] Table 8. Aesthetic evaluation for different fin widths Table 9 shows the results for nozzles 2A to 2G of the present invention with different fin heights. All other variables were kept constant. The results in Table 9 show that all nozzles 2A to 2E of the present invention passed both manual and electric toothbrushes, while nozzles 2F and 2G of the present invention failed for both manual and electric toothbrushes.

[0149] Table 9. Aesthetic evaluation for different fin heights

[0150] Table 10 shows the results for nozzles 3A to 3D of the present invention, which have different center hub diameters and therefore different restriction percentages. All other variables were kept constant. The results in Table 10 show that all nozzles 3A to 3D of the present invention pass for both manual and electric toothbrushes.

[0151] Table 10. Aesthetic evaluation for different hub diameters

[0152] Table 11 shows the results for nozzles 4A to 4C of the present invention, which have different orifice diameters and therefore different restriction percentages. All other variables were kept constant. The results in Table 11 show that nozzles 4A to 4C of the present invention passed, except for nozzle 4A on a manual toothbrush.

[0153] Table 11. Aesthetic evaluation of orifice diameters of different shapes

[0154] Table 12 shows the results for nozzles 5A to 5C of the present invention with different nominal orifice diameters. All other variables were kept constant. The results in Table 12 show that nozzles 5A to 5C of the present invention pass both manual and electric toothbrushes.

[0155] Table 12. Aesthetic evaluation for different nominal orifice diameters

[0156] Table 13 shows the results for nozzles 6A to 6C of the present invention, which have different numbers of fins and therefore different restriction percentages. All other variables remained constant. The results in Table 13 show that nozzle 6B of the present invention passed both manual and electric toothbrushes, while nozzle 6A of the present invention failed for both. Nozzle 6C of the present invention passed on electric toothbrushes but failed on manual toothbrushes.

[0157] Table 13. Aesthetic evaluation for different numbers of fins

[0158] Table 14 shows the results for nozzles 7A to 7E of the present invention with different restriction percentages and different numbers of fins. All other variables were kept constant. The results in Table 14 show that all nozzles 7A and 7C to 7E of the present invention passed both manual and electric toothbrushes, while nozzle 7B of the present invention failed for both.

[0159] Table 14. Aesthetic evaluation for different percentages of restriction

[0160] In addition, both the Fit top cover and the flip-top top cover passed aesthetic evaluations for both manual and electric toothbrushes. All other variables remained constant.

[0161] Comprehensive weight measurement and aesthetic evaluation The results above are then combined to show whether the given nozzle of the present invention passes both the gravimetric evaluation and the aesthetic evaluation.

[0162] Table 15 shows the results for nozzles 1A to 1F of the present invention with different fin widths. The results in Table 15 show that nozzles 1A to 1D of the present invention passed on a manual toothbrush, and all nozzles 1A to 1F of the present invention passed on an electric toothbrush.

[0163] Table 15. Comprehensive evaluation of different fin widths

[0164] Table 16 shows the results for nozzles 2A to 2G of the present invention with different fin heights. The results in Table 16 show that all nozzles 2A to 2E of the present invention passed both manual and electric toothbrushes, while nozzles 2F and 2G of the present invention failed for both manual and electric toothbrushes.

[0165] Table 16. Comprehensive evaluation of different fin heights

[0166] Table 17 shows the results for nozzles 3A to 3D of the present invention, which have different center hub diameters and therefore different restriction percentages. The results in Table 17 show that all nozzles 3A to 3D of the present invention pass both manual and electric toothbrushes.

[0167] Table 17. Comprehensive evaluation for different hub diameters

[0168] Table 18 shows the results for nozzles 4A to 4C of the present invention, which have different orifice diameters and therefore different restriction percentages. The results in Table 18 show that nozzles 4A to 4C of the present invention passed, except for nozzle 4A on a manual toothbrush.

[0169] Table 18. Comprehensive evaluation of orifice diameters of different shapes

[0170] Table 19 shows the results for nozzles 5A to 5C of the present invention with different nominal orifice diameters. The results in Table 19 show that nozzles 5B and 5C of the present invention pass both manual and electric toothbrushes, while nozzle 5A of the present invention fails for both.

[0171] Table 19. Comprehensive evaluation for different nominal orifice diameters

[0172] Table 20 shows the results for nozzles 6A to 6C of the present invention, which have different numbers of fins and therefore different restriction percentages. The results in Table 20 show that nozzle 6B of the present invention passes both manual and electric toothbrushes, while nozzle 6A of the present invention fails for both. Nozzle 6C of the present invention passes on electric toothbrushes but fails on manual toothbrushes.

[0173] Table 20. Comprehensive evaluation for different numbers of fins

[0174] Table 21 shows the results for nozzles 7A to 7E of the present invention with different restriction percentages and different numbers of fins. The results in Table 21 show that nozzles 7C and 7D of the present invention passed on both manual and electric toothbrushes, while nozzle 7B of the present invention failed on both. Nozzles 7A and 7E of the present invention passed on both electric toothbrushes but failed on both manual toothbrushes.

[0175] Table 21. Comprehensive assessment of different restriction percentages

[0176] Evaluation by weight measurement method for different fin configurations Use two kinds of toothpaste Figure 6 and Figures 10 to 15 The nozzles shown were tested to evaluate the effect of nozzle shape on the weight of the resulting toothpaste pellets. Two toothpastes were tested: Crest ProHealth Clean Mint (CPH) and Burt's Bees Purely White Zen Peppermint (Burt's). The extruded pellets were each approximately 1" in length. The control nozzle and Examples 8A to 8F each had a circular orifice with a diameter of 9.0 mm. (Control nozzle...) Figure 10 It has an unobstructed orifice. Example 8A ( Figure 11 It has five unconnected fan-shaped fins. Example 8B ( Figure 12 It has five unconnected, inclined fan-shaped fins. Example 8C ( Figure 13 ) and 8D ( Figure 14 These are similar to Examples 8A and 8B, except that the fins are connected to the central hub. Example 8E ( Figure 6 The fins of Example 8F are shaped similarly to curved fan blades. Figure 15 The fins of Examples 8E and 8F are propeller-shaped. The fins of both Examples 8E and 8F rise distally from the orifice. The resulting paste particles are shown in... Figure 15 A to Figure 15 G and Figure 16A to Figure 16G Table 22 provides the percentage increase in weight measurement for nozzles 8A to 8F of the present invention compared to control nozzles.

[0177] Table 22. Comparison of paste weights with different fin configurations and the control.

[0178] Compared to the control, all nozzles 8A to 8F of the present invention provide an increase in paste weight. Figure 10Compared to Example 8A, which has no tilted fins, Example 8B, with five tilted fins, provides a greater weight increase for both CPH and Burt's. However, when a center hub is present, Example 8C (0° tilt) provides a greater weight increase for both CPH and Burt's compared to Example 8D (tilted fins). Examples 8E and 8F both provide significantly higher weight increases compared to Examples 8A through 8D, at least in part due to off-axis extrusion provided by the nozzle. Figure 15 F, Figure 15 G, Figure 16F and Figure 16G As can be seen, the paste particles produced by Examples 8E and 8F may not look very aesthetically pleasing on the toothbrush head.

[0179] The dimensions and values ​​disclosed herein should not be construed as strictly limited to the precise numerical values ​​cited. Rather, unless otherwise specified, each such dimension is intended to represent the stated value and the range surrounding its functional equivalent. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0180] Unless expressly excluded or otherwise limited, every reference cited herein, including any cross-references or related patents or patent applications, and any patent application or patent claiming priority to or benefiting from it, is incorporated herein by reference in its entirety. A reference to any document is not an admission that it is prior art concerning any invention disclosed or claimed herein, nor is it an admission that it, alone or in any combination with any other reference, teaches, suggests, or discloses any such invention. Furthermore, where any meaning or definition of a term in this invention conflicts with any meaning or definition of the same term in a referenced document, the meaning or definition given to that term in this invention shall prevail.

[0181] While specific embodiments of the invention have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, it is intended that all such changes and modifications falling within the scope of the invention be covered by the appended claims.

Claims

1. A nozzle for dispensing an oral care composition, the nozzle comprising: an orifice having a central axis; and fins partially obstructing the orifice, wherein each of the fins has an upper surface and a lower surface.

2. The nozzle of claim 1, wherein the center of the orifice is obstructed, preferably wherein the nozzle further comprises a central hub, wherein the fins are coupled to the central hub.

3. The nozzle of claim 1 or claim 2, wherein the upper surface of each of the fins is distal to the orifice.

4. The nozzle of any one of claims 1-3, wherein the lower surface of each of the fins is proximal to the orifice.

5. The nozzle of any one of claims 1-4, wherein the lower surface of each of the fins is distal to the orifice.

6. The nozzle of any one of claims 1-5, further comprising an axial extrusion region and an off-axis extrusion region.

7. The nozzle of any one of claims 1-6, further comprising a sidewall defining the orifice, wherein the sidewall comprises an inner wall, a rim, and an outer wall.

8. The nozzle of claim 7, wherein each of the fins further comprises an outer end that extends to the outer wall of the sidewall.

9. The nozzle of claim 7, wherein the lower surface of each of the fins extends from an inner surface of the sidewall.

10. The nozzle of any one of claims 1-9, wherein the fins are tilted relative to the central axis of the orifice.

11. The nozzle of any one of claims 1-10, wherein the distance between the lower surface of the fins and the orifice varies over the length of the fins.

12. The nozzle of any one of claims 1-11, wherein the shape of the fins is scalloped.

13. The nozzle of any one of claims 1-12, wherein each of the fins comprises a longitudinal portion extending distal to the orifice, an axial portion extending over the orifice, and a transition portion coupling the longitudinal portion and the axial portion.

14. An assembly, the assembly comprising: a nozzle according to any one of claims 1-13; a tube; and a cap configured to be coupled to the tube, preferably wherein the nozzle is integral with the cap or tube.

15. A method of dispensing an oral care composition, the method comprising: extruding the oral care composition through a nozzle according to any one of claims 1-13, wherein at least a portion of the oral care composition is extruded off-axis relative to the central axis of the orifice, preferably wherein the assembly comprises the nozzle and a tube containing the oral care composition, and extruding the oral care composition comprises applying pressure to the tube.

16. Use of a nozzle having a partially obstructed orifice to improve the dosing of an oral care composition as dispensed.

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