Solid-state fusion type environment-friendly toothbrush head and oral cleaning system

Abstract

This utility model discloses a solid-state fusion-type environmentally friendly toothbrush head and oral cleaning system. The toothbrush head includes a bristle base (1) and bristles (2), with the bristles (2) covered with solid toothpaste paste (3) to form an integrated structure; the bristle base (1) has an annular step (6) around its periphery, and a matching ring (7) and a top cap (8) form a physical encapsulation. When in use, the top cap and ring are removed, and the toothbrush head is installed on the handle (4). After contact with water, the toothpaste paste softens and can be used for brushing. This utility model can significantly reduce the amount of plastic used, avoiding the recycling problem of toothpaste tubes (especially composite plastic tubes); and it is ready to use immediately, eliminating the step of squeezing toothpaste and avoiding the embarrassment of squeezing too much or too little. By using a ring and top cap to encapsulate the solid toothpaste paste, the shelf life is longer than that of traditional toothpaste under moisture-proof packaging.

Description

Technical Field

[0001] This utility model relates to the field of personal oral care products technology, specifically to a novel disposable toothbrush head and oral cleaning system that integrates toothpaste paste and toothbrush bristles, and in particular to an environmentally friendly toothbrush head that utilizes freeze-drying technology to achieve solid-state fusion of the paste and bristles and is preserved without preservatives. Background Technology

[0002] Traditional toothpaste requires the addition of preservatives to inhibit microbial growth, which may have potential impacts on oral microbiota and human health with long-term use. Toothpaste tubes are mostly made of composite plastic, making recycling difficult and generating a large amount of plastic waste. They are inconvenient to use, requiring squeezing out toothpaste, which can lead to waste (residue at the tube opening, excessive squeezing out). When traveling or going out, both a toothbrush and toothpaste must be carried.

[0003] Most existing "toothpaste and toothbrush 2-in-1" products use physical methods to place a small amount of toothpaste in specific areas of the brush head (such as the grooves between the bristles or the back of the brush head). The toothpaste is separate from the bristles, making it easy for the toothpaste to fall off or contaminate the bristles during transportation. Preservatives still need to be added to the toothpaste. The amount of toothpaste is usually small, or the user experience is not good.

[0004] Therefore, there is an urgent need to develop a new type of oral hygiene product that is healthier, more environmentally friendly, more convenient, and provides a better user experience. Utility Model Content

[0005] The present invention aims to overcome the shortcomings of the prior art and provide a solid-state fusion environmentally friendly toothbrush head and oral cleaning system.

[0006] To achieve the above objectives, the specific technical solution adopted by this utility model is as follows: a solid-state fusion environmentally friendly toothbrush head, including a bristle base and bristles fixed on the bristle base. The bristles are covered with solid toothpaste, forming an integrated porous structural unit that is physically bonded to the bristles. The bristle density of the outermost ring is higher than that of the inner bristles, forming a barrier layer to prevent the toothpaste from falling off.

[0007] Preferably, the bristle base is provided with an annular step around its periphery, and a detachable ring sleeve is fitted on the annular step.

[0008] Preferably, the ring is fitted with a top cap for encapsulating solid toothpaste paste.

[0009] Preferably, the annular step is provided with a flange, and the inner side of the ring is provided with a groove that matches the flange.

[0010] Preferably, the top cover and the ring are connected by a snap-fit, forming a sealed chamber that covers the brush area.

[0011] Preferably, the bristle base has a connecting structure at its bottom, including a snap, slot, or thread, for detachable installation to the toothbrush handle.

[0012] An oral hygiene system includes a reusable toothbrush handle and a toothbrush head as described in any of the above, wherein the toothbrush handle is detachably connected to a bristle base via a connecting structure.

[0013] To use, the user takes out a disposable toothbrush head, aligns its connecting structure, and attaches it to the reusable toothbrush handle. Simply wet the brush head with water for a few seconds; the freeze-dried porous toothpaste quickly absorbs the water, dissolving / dispersing evenly on the bristles and returning to a state similar to traditional toothpaste. Then, brush your teeth like you would with a regular toothbrush. After use, remove the disposable toothbrush head from the handle and discard it (sort it according to its type). Clean the handle for future use.

[0014] Beneficial effects of this utility model

[0015] 1. Significantly environmentally friendly: greatly reduces plastic usage: only the toothbrush head is disposable (small in size), while the handle can be reused for a long time. Compared with the traditional "toothbrush + toothpaste tube" combination, the amount of plastic used is significantly reduced (>70%); avoids the recycling problem of toothpaste tubes (especially composite plastic tubes); and biodegradable materials can be selected to make the brush head base and bristles, further reducing the environmental burden.

[0016] 2. Extremely convenient: Ready to use immediately, eliminating the need to squeeze toothpaste and avoiding the embarrassment of squeezing too much or too little; extremely convenient to carry for travel, business trips, and outdoor activities (only need to bring a small package of toothbrush heads + small brush handle); simply wet the toothbrush to activate it.

[0017] 3. Long shelf life: The solid toothpaste is sealed with a ring and top cap, and under moisture-proof packaging, the shelf life is longer than that of traditional toothpaste. Attached Figure Description

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a solid-state fused environmentally friendly toothbrush head;

[0019] Figure 2 This is a schematic diagram of the ring structure;

[0020] Figure 3 This is a schematic diagram of the top cover structure;

[0021] Figure 4 This is a schematic diagram showing the toothbrush head and handle separated.

[0022] Figure 5 This is a schematic diagram showing the assembled state of the toothbrush head and handle.

[0023] Figure 6 This is a flowchart of the preparation process.

[0024] In the diagram: 1. Brush base; 2. Brush bristles; 3. Toothpaste paste; 4. Toothbrush handle; 5. Connecting structure; 6. Step; 7. Ring; 8. Top cap. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figures 1-6 The solid-state fusion eco-friendly toothbrush head shown includes:

[0028] Brush base 1: Made of PP material, its size is the standard size of existing toothbrush bristle bases, with a snap-on connection structure 5. The bristle base 1 has annular steps, bristles 2 are embedded on the bristle base 1, a ring 7 is fitted at the annular steps 6, and a top cover 8 is set on the ring cover 7.

[0029] Brush bristles 2: Nylon 612, medium hardness, standard bristle density. The outermost ring of bristles has a higher bristle density than the inner bristles, acting as a barrier to prevent the cream from easily slipping off the bristle base 1.

[0030] Toothpaste paste 3 uses the formula and manufacturing method of CN1218685C utility model patent, removing conventional preservatives such as sodium benzoate / paraben from the formula. (by weight percentage) sepiolite 30%, calcium carbonate 15%, glycerol 10%, lauryl alcohol 20%, sorbitol 8%, fragrance 1.2%, food coloring 0.06%, saccharin 0.3%, and deionized water as the balance.

[0031] The manufacturing method of solid-state fusion eco-friendly toothbrush heads includes the following steps:

[0032] S1. Prefabricated brush base 1 with brush bristles 2.

[0033] S2. Toothpaste Application: Precisely and evenly apply the prepared, moist toothpaste paste 3 to the brush bristles 2. Application method: Immersion (fully or partially immersed in the paste). The amount applied must ensure coverage / blending effect and the amount used per brushing.

[0034] S3. Pre-freezing: Quickly place the brush head with the applied paste into an ultra-low temperature environment (-30℃) to freeze, allowing the water in the paste to completely crystallize. The temperature must be below the eutectic point of the paste.

[0035] S4. Freeze-drying (sublimation drying): Transfer the frozen brush head to a freeze dryer. Under high vacuum (<50 Pa), by controlling the temperature of the heating plate (-40℃), the frozen ice crystals directly sublimate (solid → gas), without passing through a liquid state. This process slowly removes moisture, forming a porous framework structure, while the paste components adhere tightly to the brush bristle surface. The drying endpoint is defined as a residual moisture content of less than 3% in the paste.

[0036] S5. Post-treatment and packaging: After drying, post-treatment (such as flattening and shaping) can be carried out under appropriate conditions (such as a dry inert gas environment). Then, a ring 7 is fitted onto the annular step 6 of the brush base 1, and the top cover 8 is placed on top. Then, it is stored and transported in a moisture-proof, light-proof, and sealed package (such as an aluminum foil bag filled with nitrogen).

[0037] Example 2

[0038] like Figures 1-6 The solid-state fusion eco-friendly toothbrush head shown includes:

[0039] Brush base 1: Made of ABS material, its size is the standard size of existing toothbrush bristle bases, with a slot-type connection structure 5. The bristle base 1 has annular steps, bristles 2 are embedded on the bristle base 1, a ring 7 is fitted at the annular steps 6, and a top cover 8 is provided on the ring cover 7.

[0040] Bristles 2: Nylon PBT or TPE, medium hardness, standard bristle density. The outermost ring of bristles has a higher bristle density than the inner bristles, acting as a barrier to prevent the cream from easily slipping off the bristle base 1.

[0041] Toothpaste paste 3 adopts the formula and manufacturing method of CN 103599000 B utility model patent, removing the preservative zinc citrate from the formula. (weight percentage %) Glycerin as a humectant, accounting for 25wt%; carrageenan as a binder, accounting for 2wt%; sodium pyrophosphate as a stabilizer, accounting for 0.35wt%; a mixture of cellulose and dicalcium phosphate dihydrate as an abrasive, accounting for 21wt%; xylitol as a sweetener, accounting for 5wt%; β-carotene as a nutritional fortifier, accounting for 0.11wt%; fragrance as a flavoring agent, accounting for 0.2wt%; pigment 0.0015wt%, with the balance being water.

[0042] The manufacturing method of solid-state fusion eco-friendly toothbrush heads includes the following steps:

[0043] S1. Prefabricated brush base 1 with brush bristles 2.

[0044] S2. Toothpaste Application: Precisely and evenly apply the prepared, moist toothpaste paste 3 onto the brush bristles 2. Application method: Precise spraying or metered dripping. The amount applied must ensure coverage / blending effect and single application quantity.

[0045] S3. Pre-freezing: Quickly place the brush head with the applied paste into an ultra-low temperature environment (-40℃) to freeze, allowing the water in the paste to completely crystallize. The temperature must be below the eutectic point of the paste.

[0046] S4. Freeze-drying (sublimation drying): Transfer the frozen brush head to a freeze dryer. Under high vacuum (<80 Pa), by controlling the temperature of the heating plate (10°C), the frozen ice crystals directly sublimate (solid → gas), without passing through a liquid state. This process slowly removes moisture, forming a porous framework structure, while the paste components adhere tightly to the brush bristle surface. The drying endpoint is defined as a residual moisture content of less than 5% in the paste.

[0047] S5. Post-treatment and packaging: After drying, post-treatment (such as flattening and shaping) can be carried out under appropriate conditions (such as a dry inert gas environment). Then, a ring 7 is fitted onto the annular step 6 of the brush base 1, and the top cover 8 is placed on top. Then, it is stored and transported in a moisture-proof, light-proof, and sealed package (such as an aluminum foil bag filled with nitrogen).

[0048] Example 3

[0049] like Figures 1-6 The solid-state fusion eco-friendly toothbrush head shown includes:

[0050] Brush base 1: made of biodegradable material, its size is the standard size of existing toothbrush bristle bases, with a threaded connection structure 5. The bristle base 1 has annular steps, bristles 2 are embedded on the bristle base 1, a ring 7 is fitted at the annular steps 6, and a top cover 8 is provided on the ring cover 7.

[0051] Brush bristles 2: biodegradable material (PLA-based material), medium hardness, conventional bristle density. The bristle density of the outermost ring is greater than that of the inner bristles, which acts as a barrier to prevent the paste from easily slipping off the bristle base (1).

[0052] Toothpaste paste 3 adopts the formula and manufacturing method of CN 101926738 B utility model patent, removing the preservative sodium benzoate from the formula. Calculated based on a total toothpaste weight of 100 grams, it contains 3 grams of food-grade sodium tripolyphosphate, 0.1 grams of fumed silica, 6 grams of abrasive, 20 grams of glycerol, 0.5 grams of xanthan gum, 1.0 gram of sodium dodecyl sulfate, 0.1 grams of sodium saccharin, 0.6 grams of fragrance, and the remainder being deionized water.

[0053] The manufacturing method of solid-state fusion eco-friendly toothbrush heads includes the following steps:

[0054] S1. Prefabricated brush base 1 with brush bristles 2.

[0055] S2. Toothpaste Application: Precisely and evenly apply the prepared, moist toothpaste paste 3 to the bristles 2. Application Method: Inject into the bristles using a mold. The amount applied must ensure coverage / blending effect and the amount used per application.

[0056] S3. Pre-freezing: Quickly place the brush head with the applied paste into an ultra-low temperature environment (-50℃) to freeze, allowing the water in the paste to completely crystallize. The temperature must be below the eutectic point of the paste.

[0057] S4. Freeze-drying (sublimation drying): Transfer the frozen brush head to a freeze dryer. Under high vacuum (<100 Pa), by controlling the temperature of the heating plate (60°C), the frozen ice crystals directly sublimate (solid → gas), without passing through a liquid state. This process slowly removes moisture, forming a porous framework structure, while the paste components adhere tightly to the brush bristle surface. The drying endpoint is defined as a residual moisture content of less than 4% in the paste.

[0058] S5. Post-treatment and packaging: After drying, post-treatment (such as flattening and shaping) can be carried out under appropriate conditions (such as a dry inert gas environment). Then, a ring 7 is fitted onto the annular step 6 of the brush base 1, and the top cover 8 is placed on top. Then, it is stored and transported in a moisture-proof, light-proof, and sealed package (such as an aluminum foil bag filled with nitrogen).

[0059] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. In particular, the toothpaste paste 3 is not an innovative point or protected content of the present invention; it can be a conventional oral cleaning paste without preservatives, or it can be developed in-house or in collaboration with others, with permission from others, or a preservative-free toothpaste paste can be directly provided by others. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid-state fusion environmentally friendly toothbrush head comprising a bristle base (1) and bristles (2) fixed on the bristle base (1), characterized in that: The bristles (2) are covered with solid toothpaste paste (3), forming an integrated porous structural unit that is physically bonded to the bristles (2). The bristle density of the outermost bristles is higher than that of the inner bristles, forming a barrier layer to prevent the paste from falling off.

2. The toothbrush head of claim 1, wherein: The brush base (1) is provided with an annular step (6) around its periphery, and a ring sleeve (7) can be detachably fitted on the annular step (6).

3. The toothbrush head of claim 2, wherein: The ring (7) is provided with a top cover (8) for encapsulating solid toothpaste paste (3).

4. The toothbrush head of claim 2, wherein: The annular step (6) is provided with a flange, and the inner side of the ring sleeve (7) is provided with a groove that matches the flange.

5. The toothbrush head of claim 3, wherein: The top cover (8) and the ring sleeve (7) are connected by a snap fastener to form a sealed chamber that covers the brush area.

6. The toothbrush head according to claim 1, characterized in that: The bristle base (1) has a connecting structure (5) at its bottom, including a snap, slot or thread, for detachable installation to the toothbrush handle (4).

7. An oral hygiene system, characterized in that: Includes a reusable toothbrush handle (4) and a toothbrush head as described in any one of claims 1-6, wherein the toothbrush handle (4) is detachably connected to the bristle base (1) via a connecting structure (5).

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