A moisture-retentive roller brush head package
By using a threaded connection between the cylinder and the cap, combined with a rubber plug and through-hole design, the sealing problem of the roller brush head packaging cylinder is solved, achieving effective moisturizing effect and convenient use, reducing costs and improving the reusability of the brush head.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGCHENG JINBANG COATING TOOLS CO LTD
- Filing Date
- 2025-09-16
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional roller brush heads have poor sealing in their packaging tubes, which leads to easy evaporation of the paint, hardening of the brush head, and decreased reusability. Furthermore, existing improved designs are complex or costly, making them difficult to apply widely.
The cylinder and cover are connected by threads. The through hole at the top of the cover fits with a rubber plug. The rubber plug is fixed to the cover by a connecting strap, forming a sealed structure that can be repeatedly opened and closed. The cylinder and cover are made of plastic, and the rubber plug is made of elastic rubber to ensure sealing.
It achieves excellent sealing and moisture retention performance, prolongs the wetting time of the coating, prevents the brush head from hardening, has a simple and convenient structure, low cost, strong compatibility, and is easy to industrialize.
Smart Images

Figure CN224492099U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging technology for coating application tools, specifically to a packaging tube for a roller brush head that can retain moisture. Background Technology
[0002] Roller brushes are commonly used tools for paint application and often require short-term storage after use for future reuse. However, traditional packaging tubes have poor sealing, leaving the brush head exposed to air, which can lead to moisture evaporation and paint curing, causing the brush head to harden and its reusability to decline. This not only shortens the lifespan of the brush head but also increases application costs and material waste.
[0003] In existing technologies, some packaging tubes use a simple cap structure for sealing, but lack a long-lasting moisturizing mechanism, failing to effectively maintain the brush head's moisture level. Furthermore, ordinary packaging tubes are difficult to reseal after opening, further accelerating brush head drying. While some improved designs attempt to address this issue by enhancing sealing or adding moisturizing components, these are often structurally complex, costly, or inconvenient to operate, making widespread application in practical scenarios difficult.
[0004] Therefore, a simple, reliably sealed, and moisturizing roller brush head packaging tube is needed to solve the problems of brush heads drying out easily and having poor reusability during storage. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a packaging tube that can effectively seal and moisturize, and prevent the roller brush head from drying and hardening.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a moisturizing roller brush head packaging tube, including a tube body and a cover body, wherein the tube body and the cover body are threadedly connected, the cover body is provided with a through hole, and a rubber plug is fixedly provided on one side of the outer side of the cover body, and the rubber plug is movable in the through hole.
[0007] As a further embodiment of this utility model, the rubber stopper is fixedly and sealed to the cover body via a connecting strap.
[0008] As a further embodiment of this utility model, the through hole is located at the center of the top of the cover.
[0009] As a further aspect of this utility model: the size of the rubber plug is adapted to the diameter of the through hole to form a sealing fit.
[0010] As a further embodiment of this utility model: the cylinder and the cover are made of plastic, and the rubber plug and the connecting strip are made of elastic rubber.
[0011] As a further embodiment of this invention, the cylinder and the cover can be sealed together.
[0012] As a further embodiment of this utility model, the outer side of the cover is provided with anti-slip texture.
[0013] As a further embodiment of this utility model: the length of the roller brush head packaging tube is 250.8 mm and the diameter is 85 mm.
[0014] Compared with the prior art, the advantages of this utility model are as follows:
[0015] 1. Excellent sealing and moisture retention performance: The tight fit between the through-hole at the top of the cap and the rubber stopper forms a reliable sealing structure that can be repeatedly opened and closed. This design effectively isolates air, prevents moisture evaporation inside the cylinder, maximizes the wetting time of the paint on the roller brush head, avoids the brush head from hardening due to drying, and ensures its reusability.
[0016] 2. Simple structure and easy to use: The rubber stopper is connected to the cap body by a connecting strap, realizing the integration of the stopper and the packaging tube. This avoids the problem of the rubber stopper being lost or difficult to find during use. Users only need to pull out the stopper, pass the through-hole handle through the hole and insert it into the brush head inside the tube for use with the handle.
[0017] 3. High practicality and low cost: The overall structure is simple, mainly composed of a cylinder, a cap, and a rubber stopper, making it easy to mass-produce industrially and resulting in low manufacturing costs. The anti-slip texture on the outside of the cap increases friction when opening and closing, enhancing ease of use and user-friendliness.
[0018] 4. Good standardization and compatibility: The specific dimensions of the packaging tube (250.8 mm in length and 85 mm in diameter) are clearly defined, making it compatible with most standard roller brush heads on the market. It has strong versatility and is easy to promote and apply. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 This is a schematic diagram of the overall structure of a moisture-retaining roller brush head packaging tube according to the present invention.
[0021] Figure 2 This is a cross-sectional view of a moisturizing roller brush head packaging tube according to the present invention.
[0022] Figure 3 This is a side view of a moisturizing roller brush head packaging tube according to the present invention.
[0023] Figure 4 This is a schematic diagram of the cover and rubber stopper structure of a moisture-retaining roller brush head packaging tube according to this utility model.
[0024] In the attached image:
[0025] 1. Cylinder body; 2. Cover body; 3. Rubber stopper; 201. Through hole; 301. Connecting strap. Detailed Implementation
[0026] 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.
[0027] Reference Figures 1 to 4 This utility model provides a moisture-retaining roller brush head packaging tube, mainly composed of three parts: a tube body 1, a cover body 2, and a rubber stopper 3. The tube body 1 and the cover body 2 are connected by threads to form the main sealed cavity of the packaging tube, which is used to accommodate the roller brush head. A through hole 201 is provided at the center of the top of the cover body 2. A rubber stopper 3, which is fixedly connected to the outside of the cover body 2 by a connecting strap 301, can be movably inserted into the through hole 201, forming an auxiliary sealing structure that can be repeatedly opened and closed.
[0028] The cylinder 1 is a cylindrical structure with one open end, made of plastic material (such as PP, PE, etc.) by injection molding, and has sufficient strength and lightness. The open end of the cylinder 1 is machined with internal threads for screwing with the cover 2.
[0029] The cap 2 is also made of plastic and its structure is adapted to the open end of the cylinder 1, with external threads machined on it. A through hole 201 is precisely machined at the center of the top of the cap 2. The diameter of this through hole 201 is specially designed to be slightly smaller than the diameter of a standard roller brush handle, but still allows the handle to be inserted. The outer circumferential surface of the cap 2 is preferably provided with anti-slip texture (such as knurling or raised dots) to increase the friction when the user twists the cap, making opening and closing operations more effortless and convenient.
[0030] The rubber plug 3 and the connecting band 301 are integrally molded from a rubber material with excellent elasticity (such as silicone rubber, EPDM rubber, etc.). The size and shape of the rubber plug 3 are closely matched with the diameter of the through hole 201 to ensure that sufficient interference is generated when it is inserted into the through hole, forming a reliable airtight seal and effectively preventing the exchange of air inside and outside the cylinder.
[0031] One end of the connecting strap 301 is connected to the base of the rubber stopper 3, and the other end is firmly fixed to the outer wall of the cap 2. This design ensures that the rubber stopper 3 will never separate from the packaging tube, completely avoiding the problem of seal failure due to stopper loss, and greatly improving the convenience and reliability of the product.
[0032] The working principle of this utility model:
[0033] 1. Initial storage of brush heads: Unscrew the cap 2, place the roller brush head with wet paint after use into the cylinder 1, and then tighten the cap 2.
[0034] 2. Sealing and Moisturizing: Ensure that the rubber stopper 3 is tightly inserted into the through hole 201 of the cap 2. At this time, the packaging tube is in a completely sealed state, forming a humid and sealed space inside the tube, effectively preventing the paint on the brush head from evaporating and hardening.
[0035] 3. Reusing the brush head: When you need to reuse the brush head, first remove the rubber stopper 3 (since it is attached to the cover 2, you can simply place it aside without worrying about losing it). Then insert the through-hole handle of the roller brush into the tube through the through hole 201 until the end of the handle is inserted into the slot of the brush head. At this point, the user can hold the part of the brush handle protruding from the tube and use the entire packaging tube as a temporary handle for painting, or remove the brush head from the tube for use.
[0036] 4. Reseal after use: After the operation is completed, if you need to save the brush head again, put the brush head back into the cylinder, tighten the cap 2, and use the rubber stopper 3 to tightly plug the through hole 201 again to restore the sealed and moisturized state.
[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A moisturizing roller brush head packaging tube, characterized in that: It includes a cylinder (1) and a cover (2), the cylinder (1) and the cover (2) are threaded together, the cover (2) is provided with a through hole (201), and a rubber plug (3) is fixedly provided on the outer side of the cover (2), and the rubber plug (3) is movable in the through hole (201).
2. The moisture-retaining roller brush head packaging tube according to claim 1, characterized in that: The rubber stopper (3) is fixedly connected to the cover (2) by a connecting strap (301).
3. The moisture-retaining roller brush head packaging tube according to claim 1, characterized in that: The through hole (201) is located at the top center of the cover (2).
4. A moisture-retaining roller brush head packaging tube according to claim 3, characterized in that: The size of the rubber plug (3) is adapted to the diameter of the through hole (201) to form a sealing fit.
5. A moisture-retaining roller brush head packaging tube according to claim 1, characterized in that: The cylinder (1) and the cover (2) are made of plastic, and the rubber stopper (3) is made of elastic rubber.
6. A moisture-retaining roller brush head packaging tube according to claim 1, characterized in that: The cylinder (1) and the cover (2) can be sealed together.
7. A moisture-retaining roller brush head packaging tube according to claim 1, characterized in that: The outer side of the cover (2) is provided with anti-slip texture.
8. A moisture-retaining roller brush head packaging tube according to claim 1, characterized in that: The length of the roller brush head packaging tube is 250.8 mm and the diameter is 85 mm.