Novel airtight zipper and waterproof trousers comprising same
By using a new type of airtight zipper in waterproof pants, embedding the zipper tape into the pants body and sewing it in place, and applying an adhesive layer and patches, the problems of discomfort and leakage of traditional waterproof pants zippers are solved, achieving highly efficient waterproofing and a comfortable wearing experience.
Patent Information
- Application Number
- CN202520316732.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing waterproof pants zipper designs require additional waterproof fabric behind the zipper, leading to discomfort and potential leaks, as well as increased production costs and product weight.
The new airtight zipper design incorporates fabric strips on both sides of the zipper, which are embedded into the pants and sewn in place. An adhesive layer is applied to the sewn area, and double-layer waterproof strips are attached to form a sealed structure, eliminating the need for traditional waterproof fabric.
It improves waterproof performance, enhances wearing comfort and freedom of movement, simplifies the structure, reduces production costs and product weight, and extends service life.
Smart Images

Figure CN223886384U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of waterproof pants technology, specifically relating to a novel airtight zipper and waterproof pants containing the same. Background Technology
[0002] Waterproof pants are essential equipment for outdoor activities, water sports, and special work environments. Traditional waterproof pants typically combine lightweight fabrics with zippers to ensure the wearer's comfort and freedom of movement. However, the waterproof performance of the zipper has remained a key technical challenge in existing waterproof pants designs.
[0003] Most existing waterproof trouser zippers use the following design: a regular zipper is sewn onto a lightweight fabric body, with an additional waterproof fabric piece added behind the zipper. When the zipper is closed, this extra waterproof fabric folds behind the zipper to prevent water penetration. This design achieves a certain degree of waterproofing, but its structure and working principle have some limitations.
[0004] The need to add extra waterproof fabric behind the zipper can cause discomfort during activity, especially when bending joints, as this design restricts freedom of movement. While the extra waterproof fabric can block water, potential leak points remain at the seams, particularly during high-intensity exercise or prolonged immersion in water, where moisture can seep in through the gaps between the fabric and the zipper. The extra waterproof fabric is also prone to wear and tear from repeated folding and unfolding, potentially causing the zipper to malfunction over time. Existing waterproof pants zipper designs add extra components and sewing steps, increasing production costs, weight, and bulk.
[0005] In view of this, we propose a novel airtight zipper and waterproof pants containing it. By eliminating the waterproof fabric after the zipper is removed, and by performing surface treatment and attaching double-layer waterproof strips at the zipper seam, not only is the waterproof performance improved, but the wearing comfort is also enhanced, the product structure is simplified, and the above-mentioned defects in the prior art are overcome. Utility Model Content
[0006] The present invention aims to solve the technical problem in the prior art that, in order to achieve waterproof function, a waterproof fabric needs to be added behind the zipper of waterproof pants. However, when the zipper is tightened, this waterproof fabric is folded behind the zipper, which affects the wearing comfort.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A novel airtight zipper includes a zipper, fabric strips on both sides of the zipper are embedded in the pants body and sewn to the pants body, the zipper and the pants body are sewn together to form a seam, and an adhesive layer is coated on the surface of the pants body and around the seam, and a sticker is adhered to the surface of the adhesive layer.
[0009] The fabric straps on both sides of the zipper are embedded into the trouser body and secured with sewing, creating a seamless integration between the zipper and the trouser body and minimizing potential channels for moisture penetration. At the seam where the zipper and trouser body are sewn together, the trouser body surface is coated with an adhesive layer. This adhesive layer provides additional sealing, preventing moisture from seeping through the seam holes. Adhesive strips, typically double-layered waterproof strips, are bonded to the adhesive layer, forming an additional waterproof barrier around the seam and further enhancing the overall waterproof performance.
[0010] Preferably, the webbing is made of polyurethane fiber or synthetic fiber. It has high strength and good abrasion resistance, and can withstand the pulling and friction in daily use.
[0011] Preferably, the adhesive material for the bonding layer is polyurethane adhesive or silicone adhesive. This ensures that the strip adheres firmly to the surface of the trousers and prevents moisture penetration.
[0012] Preferably, the welt is a double-layered waterproof welt. The double-layered waterproof welt provides double protection, effectively preventing moisture from entering the pants through the zipper.
[0013] A type of waterproof pants incorporating the aforementioned novel airtight zipper. The use of this new airtight zipper significantly enhances the waterproof performance of the pants, ensuring the wearer remains dry in damp environments. The elimination of traditional waterproof fabric reduces discomfort and provides a more comfortable wearing experience.
[0014] Compared with the prior art, the technical effects and advantages of this utility model are:
[0015] This new type of airtight zipper and waterproof pants incorporating it create a tightly integrated unit by embedding polyurethane or synthetic fiber strips on both sides of the zipper into the pant body and sewing them in place. An adhesive layer is applied to the seams, and polyurethane or silicone adhesives are used to ensure the strips adhere firmly, creating a more airtight environment when the zipper is closed. This design effectively prevents moisture and sediment from entering the pants, significantly improving their waterproof performance.
[0016] This new type of airtight zipper and the waterproof pants incorporating it improve wearing comfort. Eliminating the waterproof fabric behind the traditional zipper reduces restriction and discomfort, allowing for greater freedom of movement. Simultaneously, its simplified design lowers the structure of the waterproof pants, reducing production costs and product weight, while increasing durability. It can withstand prolonged use and repeated folding, meeting users' demands for durability. It also enhances the product's aesthetics; its sleek and simple design satisfies modern consumers' pursuit of style. Double-layer waterproof strips provide dual protection, effectively preventing moisture penetration while extending the zipper's lifespan, ensuring the reliability and long-term stability of the waterproof pants in humid environments. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is the first exploded view of the present invention;
[0019] Figure 3 This is the second exploded view of the present invention.
[0020] In the picture: 1. Zipper; 2. Fabric tape; 3. Pants body; 4. Sewing area; 5. Adhesive layer; 6. Tape. Detailed Implementation
[0021] 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.
[0022] The following combination Figure 1-3 This application will be described in further detail.
[0023] This application discloses a novel airtight zipper, comprising a zipper 1, with fabric strips 2 on both sides of the zipper 1 embedded in and sewn onto the pant body 3 to ensure a tight fit between the zipper 1 and the pant body 3. The fabric strips 2 are polyurethane fiber strips or synthetic fiber strips. After the zipper 1 and the pant body 3 are sewn together, a seam 4 is formed. An adhesive layer 5 is coated on the surface of the pant body 3 and around the seam 4. The adhesive material of the adhesive layer 5 is polyurethane adhesive or silicone adhesive. A double-layer waterproof strip 6 is adhered to the surface of the adhesive layer 5, which can effectively prevent water penetration and further enhance the waterproof effect.
[0024] The fabric straps 2 on both sides of the zipper 1 are embedded into the pant body 3 and secured by sewing, thus forming a unified whole between the zipper 1 and the pant body 3 and reducing potential channels for moisture penetration. At the seam 4 formed after the zipper 1 and pant body 3 are sewn together, the surface of the pant body 3 is coated with an adhesive layer 5. This adhesive layer 5 provides additional sealing, preventing moisture from penetrating through the sewing thread holes. Adhesive strips 6, typically double-layered waterproof strips 6, are bonded to the surface of the adhesive layer 5. These strips 6 form an additional waterproof barrier around the seam 4, further enhancing the overall waterproof performance.
[0025] Through the above design, the new airtight zipper creates a more sealed environment when zipper 1 is closed, effectively preventing moisture, mud, and other external substances from entering the pants, making it suitable for use in wet or wading environments. Eliminating the traditional waterproof fabric behind zipper 1 reduces the feeling of restriction and discomfort when wearing the pants, increasing freedom of movement, especially around the joints. The design of the new airtight zipper 1 simplifies the structure of the waterproof pants, reducing components and sewing steps, helping to lower production costs and also reducing the product's weight. Due to the reduced wear and tear on additional components, the new airtight zipper 1 is more durable, able to withstand prolonged use and repeated folding. The design of the new airtight zipper 1 is also more streamlined and concise, improving the product's appearance and satisfying consumers' pursuit of aesthetics.
[0026] Overall, the design of the new airtight zipper improves waterproof performance while also taking into account wearing comfort, durability, and product aesthetics, providing users with a better user experience.
[0027] Polyurethane fiber tape and synthetic fiber tape offer high strength and good abrasion resistance, enabling them to withstand the pulling and friction of daily use while providing a degree of softness and comfort. These materials typically possess good elasticity, adapting to body movements without restricting range of motion.
[0028] Both polyurethane and silicone adhesives possess strong bonding capabilities, ensuring that the patch 6 adheres firmly to the surface of the trousers 3 and preventing moisture penetration. Both adhesives are highly water-resistant and will not easily detach even after prolonged immersion in water. Both polyurethane and silicone adhesives are resistant to various climatic conditions, including high and low temperatures and humidity variations, guaranteeing the long-term stability of the zipper 1.
[0029] The double-layer waterproof strip 6 provides dual protection, effectively preventing moisture from entering the pants through the zipper 1. The double-layer strip 6 design can better withstand wear and tear from daily use, extending the lifespan of the zipper 1.
[0030] A type of waterproof pants that includes the aforementioned novel airtight zipper, enabling the pants to maintain comfort while providing enhanced waterproof performance.
[0031] The use of a new airtight zipper significantly enhances the waterproof performance of the waterproof pants, ensuring the wearer stays dry in damp environments. The elimination of traditional waterproof fabric reduces discomfort and provides a more comfortable wearing experience. The new airtight zipper design allows for greater freedom of movement, suitable for various outdoor activities and work occasions. The use of high-strength materials and durable adhesives ensures the long-term use and reliability of the waterproof pants. The simple design and high-quality materials enhance the overall appearance of the waterproof pants, meeting the modern consumer's dual demands for style and functionality.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel airtight zipper, comprising a zipper (1), characterized in that: The fabric strips (2) on both sides of the zipper (1) are embedded in the pants body (3) and sewn to the pants body (3). After the zipper (1) and the pants body (3) are sewn together, a seam (4) is formed. A layer of adhesive (5) is coated on the surface of the pants body (3) and around the seam (4). A strip (6) is attached to the surface of the adhesive layer (5).
2. The novel airtight zipper according to claim 1, characterized in that: The fabric tape (2) is a polyurethane fiber tape or a synthetic fiber tape.
3. The novel airtight zipper according to claim 1, characterized in that: The adhesive material for the adhesive layer (5) is a polyurethane adhesive or a silicone adhesive.
4. The novel airtight zipper according to claim 1, characterized in that: The adhesive strip (6) is a double-layer waterproof adhesive strip (6).
5. A waterproof pair of pants, characterized in that: the waterproof pants comprise the novel airtight zipper as described in any one of claims 1-4.