Three-dimensional sealed opening and closing wet toilet paper cover

Abstract

The utility model provides a kind of three-dimensional sealing type open and close wet toilet paper cover, belong to sanitary product technical field, including base, it is fixedly connected in the punching area of packaging bag, base is equipped with the inner circle punching for wet toilet paper to pass through;Cover, it is used to seal base, cover and base are connected by hinged connection, so that cover can be rotated open and close around hinged shaft;The outer circle punching is equipped in the base bottom, and the inclined surface between the inner circle punching and the outer circle punching is equipped, so that the trapezoidal space of lower width and upper narrow between packaging bag and base is formed;The utility model is through the inclined surface between the inner circle punching and the outer circle punching, the trapezoidal space of lower width and upper narrow between envelope and base is formed, the contact area of envelope and wet toilet paper is smaller, the probability of wet toilet paper rupture is reduced;By setting vertical wall and Z-shaped structure, Z-shaped structure has deformation area normal closure, vertical wall and the deformation area of Z-shaped structure are closely combined, maintain the stability of sealing structure when buckling.

Description

Technical Field

[0001] This utility model relates to the field of hygiene products technology, specifically to a three-dimensional sealed opening and closing wet toilet paper cover. Background Technology

[0002] In the field of wet toilet paper packaging, especially for wall-mounted wet toilet paper products, a flat-pressed wrapping structure is commonly used, with a disposable label covering the perforated area and a wet toilet paper cap on top to achieve an initial seal. However, this traditional design has revealed significant problems and shortcomings in actual use.

[0003] First, the film around the perforated area adheres too tightly to the wet toilet paper, requiring users to apply significant pulling force when pulling it out. This excessive mechanical stress, combined with the inherent fragility of wet toilet paper, easily causes it to tear during extraction. Experiments show that the breakage rate is as high as 50% for the first five pulls, severely impacting user experience and leading to product waste.

[0004] Secondly, after initial opening, the sealing performance of disposable adhesive labels faces severe challenges. The adhesive layer of the label quickly fails after repeated peeling and sticking and undergoes plastic deformation, making it impossible to restore an effective seal, allowing outside air to continuously penetrate the packaging. This not only accelerates the evaporation of moisture and loss of active ingredients in wet toilet paper, but also brings hygiene risks such as the toilet paper drying out and even the growth of microorganisms, greatly shortening the product's effective shelf life and service life.

[0005] Furthermore, most existing cap designs use a flip-top design, but after repeated wear and tear, the material ages, affecting the cap's sealing performance. While some products on the market have made targeted improvements, most only address one aspect—easily broken upon removal or poor sealing—failing to comprehensively solve the problem. For example, some solutions focus on optimizing the label adhesive layer to support repeated application, but still cannot improve the problem of easy breakage upon removal; others focus on reducing the tightness of the wrapping to improve the problem of easy breakage upon removal, but this affects the aesthetic appearance.

[0006] In summary, existing wet toilet paper packaging has significant shortcomings in terms of sealing, smooth and low-damage dispensing, and aesthetic appeal. Utility Model Content

[0007] This invention provides a three-dimensional sealed opening and closing wet toilet paper cover to solve the technical problems in the prior art.

[0008] To solve the above problems, the three-dimensional sealed opening and closing wet toilet paper cover provided by this utility model adopts the following technical solution: a base, which is fixedly connected to the perforated area of ​​the packaging bag, and the base has an inner ring perforation for the wet toilet paper to pass through;

[0009] The cover is used to seal the base. The cover and the base are connected by a hinge, so that the cover can be rotated and opened about the hinge axis.

[0010] The base has an outer ring perforation at the bottom, and an inclined surface is provided between the inner ring perforation and the outer ring perforation, so that a truncated platform space with a wider bottom and a narrower top is formed between the packaging bag and the base, thereby reducing the contact area between the packaging film and the wet toilet paper.

[0011] The upper surface of the base is integrally formed with an annular vertical wall, and the lower surface of the cover is integrally formed with an annular Z-shaped structure that matches the vertical wall.

[0012] As a further improvement, the base is frustum-shaped, and the size of the outer ring perforation is consistent with the size of the perforation area of ​​the packaging bag.

[0013] As a further improvement, the inclination angle of the inclined surface between the inner ring drilling and the outer ring drilling is 15°-30°.

[0014] As a further improvement, the Z-shaped structure includes a deformation zone and a non-deformation zone. When the cover is closed, the vertical wall is in close contact with the deformation zone of the Z-shaped structure to ensure airtightness.

[0015] As a further improvement, the cover is provided with a snap fastener on the side away from the hinge axis to lock and unlock the cover.

[0016] As a further improvement, a sealing strip is provided between the cover and the base to ensure the closure of the cover in its initial state.

[0017] As a further improvement, the sealing strip is connected with a pull tab to allow for disassembly of the sealing strip.

[0018] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0019] 1. This utility model creates a truncated platform between the inner and outer ring perforations, forming a platform-shaped space that is wider at the bottom and narrower at the top between the film and the base. With this design, the area of ​​the outer ring perforations is about three times that of traditional film perforations, resulting in a smaller contact area between the film and the wet toilet paper and reducing the probability of the wet toilet paper breaking.

[0020] The inclined surface guides the trajectory of the wet toilet paper during the extraction process; the design of the inclined angle conforms to the stress dispersion principle in material mechanics, with low edge stress; and it is more in line with ergonomic design. The natural flexion angle of human fingers is 15°-30°, and the angle of this patented design is in the middle range, allowing fingers to naturally enter the lid to pick up the wet toilet paper.

[0021] By adopting the lid of this invention, the tear rate of wall-mounted wet toilet paper will be reduced by 40%-70%. The inclined surface design facilitates natural finger insertion, conforms to the natural gripping angle of the human body, and requires approximately 20% less effort to pull out compared to a flat-top lid.

[0022] 2. This utility model, by setting up a vertical wall and a Z-shaped structure, ensures that when the deformation zone of the Z-shaped structure is normally closed, the vertical wall and the deformation zone of the Z-shaped structure fit tightly together. Even if slight deformation occurs during use, the design of the inclined surface of the deformation zone can ensure that the deformation zone fits tightly with the vertical wall, maintaining the stability of the sealing structure when fastened.

[0023] 3. The wet toilet paper cover of this utility model adopts a truncated pyramid structure with a smaller top and a larger bottom, which has better mechanical properties. The sloping side can more effectively transfer and distribute the vertical load to the side wall of the container. The compressive strength of the sloping surface is 40% higher than that of the flat surface, which helps to improve the problem of product damage during transportation.

[0024] 4. Through the above improvements, this utility model significantly enhances both the ease of extraction of wet toilet paper and the long-term sealing and moisture retention of the packaging, resolving the contradiction between easy extraction and sealing in traditional designs. Attached Figure Description

[0025] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0026] Figure 1 This is a schematic diagram of the structure of the three-dimensional sealed opening and closing wet toilet paper cover of this utility model;

[0027] Figure 2 This is a schematic diagram of the three-dimensional sealed opening and closing wet toilet paper cover of this utility model, which is sealed once when not opened;

[0028] Figure 3 This is a schematic diagram showing the forces acting on the wet toilet paper during the extraction of the wet toilet paper according to this utility model;

[0029] Figure 4 This is a schematic diagram of the Z-shaped structure of the three-dimensional sealed opening and closing wet toilet paper cover of this utility model;

[0030] Figure 5 This is a schematic diagram illustrating the sealing principle of the Z-shaped structure of the three-dimensional sealing wet toilet paper cover of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Cover; 2. Base; 3. Z-shaped structure; 4. Buckle; 5. Block; 6. Handle; 7. Vertical wall; 8. Inner ring perforation; 9. Inclined surface; 10. Outer ring perforation; 11. Hinge; 12. Pull buckle; 13. Sealing strip. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] In existing technologies, wall-mounted wet toilet paper products are relatively convenient to use and are popular with consumers. However, because wet toilet paper is flushable, its tear resistance is relatively poor. Furthermore, the film around the perforated area adheres too tightly to the wet toilet paper, requiring users to apply significant pulling force when removing it. This excessive mechanical stress concentration on the wet toilet paper easily causes tearing during removal, severely impacting user experience and leading to product waste, especially in the first 1-5 pulls, where the breakage rate is very high.

[0035] Another issue is that wall-mounted wet toilet paper products generally have a relatively long service life, and over time, the materials may age, affecting the sealing performance of the lid.

[0036] To address the aforementioned issues, this invention first adjusts the base into a frustum shape, creating a three-dimensional structure. Then, through the design of perforations on the outer ring and the addition of an inclined surface, the area of ​​the perforations on the outer ring is approximately three times that of traditional film-wrapped perforations. This reduces the contact area between the film and the wet toilet paper, lowering the probability of tearing. Furthermore, the inclined surface also provides guidance, preventing excessive friction between the wet toilet paper and the edges of the packaging bag, which could lead to damage.

[0037] Secondly, by incorporating a vertical wall and a Z-shaped structure, the sealing design is optimized. The principle is that when the cover is closed, the vertical wall compresses the deformation zone of the Z-shaped structure, causing it to deform and ensuring a tight fit between the vertical wall and the deformation zone. Simultaneously, the beveled design of the deformation zone also provides guidance. Even if slight deformation occurs during use, the beveled design of the deformation zone ensures a tight fit between the deformation zone and the vertical wall. Combined with the snap-fit ​​design, this maintains the stability of the sealing structure when closed.

[0038] After introducing the basic principles of this utility model, various non-limiting embodiments of this utility model are described in detail below. Any quantity of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0039] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0040] Embodiment 1 of the three-dimensional sealed opening and closing wet toilet paper cover provided by this utility model:

[0041] like Figure 1-5 As shown, the three-dimensional sealed opening and closing wet toilet paper cover includes a base 2 and a cover body 1 hinged to the base 2. The base 2 is fixedly connected to the perforated area of ​​the packaging bag (i.e., the wrapping film). The base 2 is frustum-shaped, with an inner ring perforation 8 at the top for the wet toilet paper to pass through, and an outer ring perforation 10 at the bottom. An inclined surface 9 is provided between the inner ring perforation 8 and the outer ring perforation 10, with an inclination angle of 15°-30°. In this embodiment, the inclination angle of the inclined surface 9 is 25°, forming a frustum-shaped space that is wider at the bottom and narrower at the top between the packaging bag and the base 2. This structure makes the area of ​​the outer ring perforation 10 about three times that of the traditional wrapping perforation area. In this embodiment, the size of the outer ring perforation 10 is consistent with the size of the perforated area of ​​the packaging bag, thus greatly reducing the contact area between the wrapping film and the wet toilet paper, with only the edge of the wet toilet paper contacting the wrapping film. When the toilet paper is pulled out, the edge of the wet toilet paper can quickly transition into the platform-shaped space, meaning that the wet toilet paper is no longer squeezed by the wrapper and the underlying wet toilet paper, and thus there is basically no chance of it tearing.

[0042] In addition, the inclined surface 9 plays a role in guiding the trajectory of the wet toilet paper during the extraction process; for example Figure 4 As shown, the tilt angle design conforms to the stress dispersion principle in materials mechanics, resulting in low edge stress; it is also more ergonomically designed, as the natural flexion angle of human fingers is 15°-30°, and the angle designed in this patent is in the middle range, making it convenient for fingers to naturally enter the lid to retrieve wet toilet paper.

[0043] The cover 1 and the base 2 are connected by a hinge, so that the cover 1 can rotate and open around the hinge axis;

[0044] like Figure 1 , Figure 4 and Figure 5 As shown, the upper surface of the base 2 is integrally formed with an annular vertical wall 7, and the lower surface of the cover 1 is integrally formed with an annular Z-shaped structure 3 that mates with the vertical wall 7. The Z-shaped structure 3 includes a deformation zone and a non-deformation zone. When the cover 1 is closed, the vertical wall 7 and the deformation zone of the Z-shaped structure 3 fit tightly together to ensure airtightness.

[0045] Figure 5In the design, L1 is the deformation area and L2 is the non-deformation area. When the cover is closed, L1 of the cover body 1 contacts and fits against the vertical wall 7 of the base 2. Since the vertical wall 7 is rectangular and the curvature at the corner is too large, there may be unreliable contact between L1 and the vertical wall 7. Therefore, a reserved length △L is designed, and a stop line and a non-deformation area L2 are designed. When unreliable contact occurs, L1 slides, and the contact point between L1 and the vertical wall 7 can move within the range of △L, causing L1 to deform and ensuring the contact between L1 and the vertical wall 7 of the base 2. When the cover is closed, internal vibration is generated. The design of the reserved length △L, the stop line and the non-deformation area L2 can also play a buffering role and maintain the stability of the sealing structure when closed.

[0046] To ensure that the cover 1 can be stably engaged with the base 2 for a long time, a latch 4 is provided on the side of the cover 1 away from the hinge axis, and a latch 5 is provided on the base 2 to cooperate with the latch 4, so as to lock and unlock the cover 1. In addition, the latch 4 is also connected to a handle 6 for easy use and to make it easier for consumers to use.

[0047] To ensure the wet toilet paper remains sealed before sale or use, this invention incorporates a plastic sealing strip 13 between the cover 1 and the base 2. This ensures the initial closure of the cover 1 and prevents external contamination. The sealing strip 13 is connected to a pull tab 12. When a user needs to open the wet toilet paper packaging for the first time, they can pinch the pull tab 12 with one hand, pull it out horizontally, and wrap it around the cover. The sealing strip 13 is pulled out along with the pull tab 12, thus unlocking the initial closed state.

[0048] While this specification has shown and described numerous embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of the present invention. It should be understood that various alternatives to the embodiments of the present invention described herein may be employed in the practice of the present invention. The appended claims are intended to define the scope of protection of the present invention and therefore cover the modular compositions, equivalents, or alternatives within the scope of these claims.

Claims

1. A three-dimensional sealed opening and closing wet toilet paper cover, comprising: The base (2) is fixedly connected to the perforated area of ​​the packaging bag. The base (2) has an inner ring perforation (8) for wet toilet paper to pass through. The cover (1) is used to seal the base (2). The cover (1) and the base (2) are connected by a hinge, so that the cover (1) can be rotated and opened about the hinge axis. The base (2) is characterized by having an outer ring perforation (10) at its bottom, and an inclined surface (9) between the inner ring perforation (8) and the outer ring perforation (10), so that a platform-shaped space with a wider bottom and a narrower top is formed between the packaging bag and the base (2), thereby reducing the contact area between the packaging film and the wet toilet paper. The upper surface of the base (2) is integrally formed with an annular vertical wall (7), and the lower surface of the cover (1) is integrally formed with an annular Z-shaped structure (3) that cooperates with the vertical wall (7).

2. The three-dimensional sealed opening and closing wet toilet paper cover according to claim 1, characterized in that: The base (2) is frustum shaped, and the size of the outer ring perforation (10) is consistent with the size of the perforation area of ​​the packaging bag.

3. The three-dimensional sealed opening and closing wet toilet paper cover according to claim 1, characterized in that: The inclination angle of the inclined surface (9) between the inner ring hole (8) and the outer ring hole (10) is 15°-30°.

4. The three-dimensional sealed opening and closing wet toilet paper cover according to claim 1, characterized in that: The Z-shaped structure (3) includes a deformation zone and a non-deformation zone. When the cover (1) is closed, the vertical wall (7) fits tightly with the deformation zone of the Z-shaped structure (3) to ensure airtightness.

5. The three-dimensional sealed opening and closing wet toilet paper cover according to claim 1, characterized in that: The cover (1) is provided with a buckle (4) on the side away from the hinge axis to lock and unlock the cover (1).

6. The three-dimensional sealed opening and closing wet toilet paper cover according to claim 1, characterized in that: A sealing strip (13) is provided between the cover (1) and the base (2) to ensure the closure of the cover (1) in its initial state.

7. The three-dimensional sealed opening and closing wet toilet paper cover according to claim 6, characterized in that: The sealing strip (13) is connected to a pull tab (12) for disassembling the sealing strip (13).

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