Pocket zipper

Abstract

The utility model discloses a pocket zipper, which is applied to the technical field of zippers, is mounted on the reverse side of a fabric, and comprises a pair of cloth belts with teeth, the teeth are meshed with each other to form a stacking cloth belt, a slider puller is connected onto the teeth, and the pocket zipper is characterized by further comprising a waterproof film adhered to the front of the cloth belts. A cutting seam is formed in the middle line of the waterproof film and is aligned with a middle seam line of the stacking cloth belt, the width of the waterproof film is smaller than that of the stacking cloth belt, the portion, not covered with the waterproof film, of the cloth belt is used for being connected with the fabric, the waterproof film is sleeved with a pocket hole of the fabric, and the pocket hole of the fabric is connected with the waterproof film. The part, not covered with the waterproof film, of the cloth belt is connected with the reverse side of the fabric, and the surface of the waterproof film is flush with the surface of the fabric. The pocket zipper is good in waterproof effect, seamless in connection with the fabric, few in pressing procedures and good in quality.

Description

Technical Field

[0001] This utility model relates to the field of zipper technology, and in particular to a pocket zipper. Background Technology

[0002] A pocket zipper is a type of zipper installed at the opening of pockets in clothing, bags, and other products. It facilitates opening and closing the pocket while providing enhanced security and protection. Similar to a regular zipper, it consists of a pair of fabric strips with interlocking teeth on one side. Each tooth has a slider. By pulling the slider, the teeth open or close, allowing the two parts to connect or separate.

[0003] In existing technologies, pocket zippers can be attached to the fabric using sewing or heat sealing processes to ensure sturdiness and durability. However, different processes each have their own advantages and disadvantages:

[0004] When using conventional sewing methods, pocket holes are cut into the fabric, the zipper is placed on the reverse side of the fabric, and then sewn together with a sewing machine to connect the fabric and the webbing. This method is simple and inexpensive, but the needle holes cannot be waterproofed, the fabric needs to be hemmed, resulting in a step between the fabric and the zipper, which leads to poor overall aesthetics and is not suitable for outdoor clothing with high requirements for waterproofing and windproofing.

[0005] When using the seamless hot pressing method, such as Figure 1 As shown, after cutting pocket holes in the fabric, align the double-sided hot melt adhesive with the pocket holes and press it onto the reverse side of the fabric. After removing the protective paper, place the zipper at the pocket hole, aligning it with the zipper's center seam and the center of the pocket hole, and press it a second time to bond the zipper to the fabric, achieving a seamless heat-pressed connection. This method eliminates the need for sewing and provides good water repellency, but the zipper is wider, the exposed zipper area is smaller, aligning it with the center line is more difficult and prone to deviation, and there is a step between the fabric and the exposed zipper, resulting in a less aesthetically pleasing appearance.

[0006] When using the new seamless hot pressing method, such as Figure 2 As shown, after cutting pocket holes in the fabric, double-sided hot melt adhesive is pressed onto the reverse side of the fabric. After removing the protective paper, the zipper is placed at the pocket hole, aligned with the zipper's center seam and the center of the pocket hole, and then pressed a second time to bond the zipper to the fabric. Next, bar stitching is applied to both ends of the zipper to prevent the zipper pull from slipping out. A strip of single-sided hot melt adhesive is then placed on the zipper surface. One end is pressed first, and after cooling, the zipper pull is moved to the pressed end, and then the other end is pressed. This method results in a smooth zipper and fabric surface, achieving a seamless connection between the zipper and fabric, better water repellency, and a higher overall aesthetic appeal. However, repeated pressing affects the zipper's physical and chemical properties, and air bubbles are easily generated when pressing the adhesive strip onto the zipper surface. The process is complex, difficult to operate, and inefficient, and the exposed bar stitching at both ends affects the overall aesthetics.

[0007] In conclusion, how to provide a seamless hot-pressed waterproof zipper that is easy to operate, has excellent quality after hot pressing, and has good waterproof performance is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0008] The purpose of this utility model is to provide a pocket zipper with advantages such as good water-repellent effect, seamless connection with fabric, fewer ironing steps and simple operation, and excellent quality after ironing.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0010] A pocket zipper, installed on the reverse side of fabric, includes a pair of toothed fabric strips that interlock to form a zippered fabric strip. A slider is attached to each tooth. A waterproof membrane is adhered to the front side of the fabric strips. A slit is provided at the center line of the waterproof membrane, aligning with the center seam of the zippered fabric strips. The width of the waterproof membrane is less than the width of the zippered fabric strips. A portion of the fabric strip not covered by the waterproof membrane is used for connection to the fabric. A pocket opening of the fabric is fitted onto the waterproof membrane. The portion of the fabric strip not covered by the waterproof membrane is connected to the reverse side of the fabric. The surface of the waterproof membrane is flush with the surface of the fabric.

[0011] Optionally, the tape and the fabric are hot-pressed together by double-sided hot melt adhesive. The double-sided hot melt adhesive is ring-shaped with a hollow hole in the middle. The shape of the hollow hole is consistent with the pocket hole of the fabric. When connecting, the hollow hole of the double-sided hot melt adhesive is aligned with the pocket hole of the fabric.

[0012] Optionally, the thickness of the waterproof membrane is equal to the sum of the thickness of the fabric and the thickness of the double-sided hot melt adhesive after hot melting.

[0013] Optionally, the width of the double-sided hot melt adhesive is less than or equal to the width of the portion of the fabric strip not covered by the waterproof membrane.

[0014] Optionally, the sidewall of the waterproof membrane contacts the inner wall of the pocket opening.

[0015] Optionally, the sidewall of the waterproof membrane is connected to the inner wall of the pocket opening by hot melt adhesive.

[0016] Optionally, the tape head is arc-shaped, and the stacked tape and the waterproof membrane are concentric.

[0017] This utility model provides a pocket zipper, installed on the reverse side of the fabric, including a pair of toothed fabric strips. The teeth mesh with each other to form a stacked fabric strip. The teeth are spiral-shaped and installed on the reverse side of the fabric strips. A slider pull head is connected to the teeth. The end of the fabric strip is arc-shaped. It also includes a waterproof membrane bonded to the front of the fabric strip. The waterproof membrane has a slit at its center line. The width of the waterproof membrane is smaller than the width of the stacked fabric strips. The fabric strip has a portion not covered by the waterproof membrane for connection with the fabric. A height difference is formed between the outer edge of the waterproof membrane and the fabric strip, so that after the fabric strip is connected to the fabric, the surface of the waterproof membrane is flush with the surface of the fabric.

[0018] This utility model provides a pocket zipper, installed on the reverse side of a fabric, comprising a pair of toothed fabric strips, the teeth interlocking to form a stacked fabric strip, the teeth being spiral-shaped, installed on the reverse side of the fabric strips, with a slider zipper head connected to the teeth, and also including a waterproof membrane bonded to the front side of the fabric strips, with a slit at the center line of the waterproof membrane, the width of the waterproof membrane being less than or equal to the width of the stacked fabric strips, the pocket zipper having a connecting portion for connecting with the fabric, the connecting portion covering at least a portion of the waterproof membrane, and a height difference formed between at least a portion of the waterproof membrane and the waterproof membrane in the area not connected to the fabric after connection, so that after the pocket zipper is connected to the fabric, the surface of the waterproof membrane in the area not connected to the fabric is flush with the surface of the fabric.

[0019] Optionally, the end of the tape is rounded.

[0020] The beneficial effect of this utility model is that the pocket zipper provided by this utility model includes a pair of fabric strips, a slider zipper head, and a waterproof membrane. Each fabric strip has teeth on one side, and the teeth mesh with each other to form a stack of fabric strips that can be opened and closed. The slider zipper head is connected to the teeth, and by pulling the slider zipper head, the teeth can be opened or closed, realizing the opening and closing function of the zipper.

[0021] The waterproof membrane is bonded to the front of the fabric tape, forming an integral structure. A slit is cut along the centerline of the waterproof membrane along its length, aligned with the center seam of the stacked fabric tape. The width of the waterproof membrane is less than the width of the stacked fabric tape, and it is bonded in the middle of the stacked fabric tape. The fabric tape has a portion not covered by the waterproof membrane for connection to the fabric. During connection, the pocket openings of the fabric are fitted over the waterproof membrane, and the portion of the fabric tape not covered by the waterproof membrane contacts and connects with the reverse side of the fabric. After installation, the surface of the waterproof membrane is flush with the surface of the fabric, with no unevenness in the fabric at the waterproof membrane, and the waterproof membrane and fabric are seamlessly connected.

[0022] This utility model's pocket zipper features a built-in waterproof membrane, providing waterproof performance while fulfilling the basic functions of a zipper. The fabric and waterproof membrane surface are flush, seamless, and stepless, perfectly fitting the pocket opening. The appearance is simple and streamlined. Seamless heat-pressing connection can be achieved in a single operation, which is easy and does not affect the zipper's physical and chemical properties. The connection surface between the waterproof membrane and the fabric tape is flat and smooth, without air bubbles, resulting in a beautiful and secure finish after heat pressing, thus improving the heat pressing effect. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the first type of connection between a conventional pocket zipper and fabric in the prior art;

[0025] Figure 2 This is a schematic diagram of a second type of connection between a conventional pocket zipper and fabric in the prior art.

[0026] Figure 3 A schematic diagram of the structure of a first pocket zipper provided in a specific embodiment of this utility model;

[0027] Figure 4 for Figure 3 Cross-sectional view;

[0028] Figure 5 A schematic diagram of the structure of a second pocket zipper provided in a specific embodiment of this utility model;

[0029] Figure 6 for Figure 5 Cross-sectional view;

[0030] Figure 7 A schematic diagram of the structure of a third pocket zipper provided in a specific embodiment of this utility model;

[0031] Figure 8 for Figure 7 Cross-sectional view;

[0032] Figure 9 This is a schematic diagram showing the connection between the pocket zipper and the fabric in this utility model;

[0033] Figure 10 These are schematic diagrams illustrating various shapes of the waterproof membrane in this utility model.

[0034] Figure label:

[0035] 1-Fabric tape; 2-Slider zipper head; 3-Waterproof membrane; 31-At least part of the waterproof membrane; 32-Waterproof membrane in areas not connected to the fabric; 4-Tooth; 5-Fabric; 51-Pocket hole; 6-Double-sided hot melt adhesive. Detailed Implementation

[0036] The core of this utility model is to provide a pocket zipper that has good waterproof performance, seamless connection with the fabric, requires fewer ironing processes, and has good quality.

[0037] 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.

[0038] In one specific embodiment, the pocket zipper provided by this utility model is installed on the reverse side of fabric 5, including a pair of fabric strips 1 with teeth 4, the teeth 4 meshing with each other to form a stacked fabric strip, a slider zipper head 2 connected to the teeth 4, and a waterproof membrane 3 bonded to the front side of the fabric strip 1. The waterproof membrane 3 has a slit at its center line, the slit being aligned with the center seam of the stacked fabric strip. The width of the waterproof membrane 3 is smaller than the width of the stacked fabric strip. The portion of the fabric strip 1 not covered by the waterproof membrane is used to connect with the fabric 5. The pocket hole 51 of the fabric 5 is fitted onto the waterproof membrane 3. The portion of the fabric strip 1 not covered by the waterproof membrane is connected to the reverse side of the fabric 5. The surface of the waterproof membrane 3 is flush with the surface of the fabric 5.

[0039] In the above structure, the pocket zipper is installed on the reverse side, concealed on the reverse side of fabric 5, as shown below. Figure 3 and Figure 4 As shown, there is no trace of a zipper when viewed from the front, and the appearance is simple.

[0040] The pocket zipper includes a pair of fabric strips 1, a slider zipper pull 2, and a waterproof membrane 3. Each fabric strip 1 has teeth 4 on one side; the teeth 4 mesh with each other to form a stack of fabric strips that can be opened and closed. The shape and size of the teeth 4 need to ensure that the zipper can open and close smoothly, while providing sufficient tension and stability. The slider zipper pull 2 ​​is connected to the teeth 4 and acts as a moving part of the zipper, controlling the engagement and disengagement of the teeth 4. By pulling the slider zipper pull 2, the teeth 4 can be opened or closed, realizing the zipper's opening and closing function.

[0041] The waterproof membrane 3 is bonded to the front side of the fabric tape 1, forming an integral structure with the fabric tape 1. The waterproof membrane 3 is waterproof and is used to enhance the waterproof performance of the zipper to prevent moisture from entering the interior through the pocket opening 51. Preferably, the waterproof membrane 3 can be made of polyurethane material, which has good waterproofness and flexibility. It can effectively block water while maintaining a certain degree of elasticity to adapt to different usage scenarios.

[0042] A slit is cut along the centerline of the waterproof membrane 3 along its length, aligning with the center seam of the stacked fabric tape. During installation, the pocket opening 51 of the fabric 5 is first fitted onto the waterproof membrane 3, ensuring the slit of the waterproof membrane 3 is aligned with the center seam of the zipper, allowing the zipper to be accurately installed in the designated position of the pocket opening 51. When the teeth 4 are pulled open, opening the pocket opening 51, the waterproof membrane 3 simultaneously unfolds at the slit, forming an opening, ensuring the pocket opening 51 can be opened normally. Conversely, when the teeth 4 engage, closing the pocket opening 51, the two pieces of the waterproof membrane 3 fit tightly together at the slit, creating a seamless seal and effectively preventing moisture intrusion, ensuring a waterproof effect.

[0043] The waterproof membrane 3 is narrower than the width of the stacked fabric tape and is bonded to the middle of the stacked fabric tape. The fabric tape 1 has a portion not covered by the waterproof membrane; that is, the stacked fabric tape has a blank area around the waterproof membrane 3 for connection to the fabric 5, providing a bonding point for subsequent connection between the fabric tape 1 and the fabric 5. During connection, the pocket opening 51 of the fabric 5 is fitted onto the waterproof membrane 3, with the waterproof membrane 3 located inside the pocket opening 51. The waterproof membrane 3 covers the pocket opening 51, which is not only aesthetically pleasing but also provides waterproofing. The portion of the fabric tape 1 not covered by the waterproof membrane contacts and connects with the reverse side of the fabric 5, ensuring a strong bond between the fabric tape 1 and the fabric 5. Preferably, the portion of the fabric tape 1 not covered by the waterproof membrane and the reverse side of the fabric 5 can be bonded by heat pressing, without damaging the integrity of the waterproof membrane 3, avoiding the pinhole problem that occurs in traditional sewing methods, thereby improving the waterproof performance of the zipper.

[0044] After installation, the surface of the waterproof membrane 3 is flush with the surface of the fabric 5, and there is no difference in height between the fabric 5 and the waterproof membrane 3. The waterproof membrane 3 and the fabric 5 are seamlessly connected. This not only makes the zipper look cleaner and more beautiful, but also makes the waterproof membrane 3 less prone to wear or damage, and facilitates daily use and cleaning, thus improving the user experience.

[0045] In this application, the method of connecting the pocket zipper to the fabric 5 includes:

[0046] Pocket zippers that accurately match the pocket openings 51 of fabric 5;

[0047] Fit the pocket hole 51 of fabric 5 onto the waterproof membrane 3 of the pocket zipper;

[0048] Make contact with and connect the uncovered waterproof membrane portion of fabric tape 1 to the reverse side of fabric 5.

[0049] This utility model's pocket zipper features a built-in waterproof membrane 3, providing waterproof performance while fulfilling the basic functions of a zipper. The fabric 5 and the surface of the waterproof membrane 3 are flush, seamless, and stepless, perfectly fitting the pocket opening 51, resulting in a clean and streamlined appearance. Seamless heat-pressing can be achieved with a single operation, simplifying the process without affecting the zipper's physical and chemical properties. The connection surface between the waterproof membrane 3 and the fabric tape 1 is smooth and flat, free of air bubbles, resulting in a beautiful and secure finish after heat pressing, thus enhancing the heat pressing effect.

[0050] Based on the above specific embodiments, the fabric tape 1 and the fabric 5 are hot-pressed together by double-sided hot melt adhesive 6. The double-sided hot melt adhesive 6 is ring-shaped with a hollow hole in the middle. The shape of the hollow hole is consistent with the pocket hole 51 of the fabric 5. When connecting, the hollow hole of the double-sided hot melt adhesive 6 is aligned with the pocket hole 51 of the fabric 5.

[0051] In one specific embodiment, the pocket zipper is connected to the fabric 5 using double-sided hot melt adhesive 6. This hot melt adhesive is ring-shaped with a central perforation, the shape of which matches the pocket hole 51 of the fabric 5. During connection, the perforation of the double-sided hot melt adhesive 6 is aligned with the pocket hole 51 of the fabric 5, and then pressed onto the reverse side of the fabric 5. During the hot pressing process, the hot melt adhesive melts and solidifies at high temperature, forming a strong connection. Specifically, it can be first ironed or spot-pressed with an ultrasonic iron, then pressed with a heat press to allow the hot melt adhesive to penetrate the fabric 5 and fix it to the reverse side. After cooling, the protective paper on the other side of the hot melt adhesive is peeled off, and it is ready for use.

[0052] Next, the pocket zipper with the waterproof membrane 3 is fixed onto the grooved silicone pad, ensuring the teeth 4 on the reverse side of the zipper are engaged in the groove and kept horizontal. Then, the reverse side of the fabric 5, with hot melt adhesive already applied, is slipped over the zipper with its own waterproof membrane 3, ensuring the pocket opening 51 of the fabric 5 matches the shape of the waterproof membrane 3, and the two fit together perfectly. After placing a copper mold on top, pressing is performed to bond the hot melt adhesive on the reverse side of the fabric 5 to the zipper tape 1.

[0053] The double-sided hot melt adhesive 6 makes the connection between the pocket zipper and the fabric 5 convenient and secure, without damaging the integrity of the waterproof membrane 3, avoiding pinhole problems, and improving the waterproof performance of the zipper. At the same time, the double-sided hot melt adhesive 6 ensures that there is sufficient hot melt adhesive between the tape 1 and the fabric 5 to guarantee a firm connection, while preventing the hot melt adhesive from covering the pocket hole 51, ensuring the normal use of the pocket hole 51; it also simplifies the application process of hot melt adhesive, allowing operators to easily control the distribution of hot melt adhesive during the pressing process, reducing the rework rate caused by hot melt adhesive overflow or insufficiency, and significantly improving production efficiency.

[0054] like Figure 9 As shown, the connection process includes:

[0055] Place the double-sided hot melt adhesive 6 on the reverse side of the fabric 5, ensuring that the perforations of the double-sided hot melt adhesive 6 are aligned with the pocket holes 51 of the fabric 5.

[0056] Double-sided hot melt adhesive 6 is connected to fabric 5 by hot pressing process;

[0057] Fit the pocket opening 51 of fabric 5 onto the waterproof membrane 3, ensuring that the waterproof membrane 3 covers the inside of the pocket opening 51.

[0058] The fabric tape 1 is connected to the other side of the double-sided hot melt adhesive 6 by a hot pressing process. The hot melt adhesive melts and solidifies to form a strong connection.

[0059] Based on the above specific embodiments, the thickness of the waterproof membrane 3 is equal to the sum of the thickness of the fabric 5 and the thickness of the double-sided hot melt adhesive 6 after hot melting.

[0060] In one specific embodiment, the thickness of the waterproof membrane 3 is slightly greater than the thickness of the fabric 5, and must be equal to the sum of the thickness of the fabric 5 and the thickness of the double-sided hot melt adhesive 6 after hot melting. The thickness of the fabric 5 refers to its own thickness, while the final thickness of the double-sided hot melt adhesive 6, which melts and solidifies during hot pressing, can be determined by calculation or experience. This design ensures that after the zipper is installed, the surface of the waterproof membrane 3 is completely flush with the surface of the fabric 5, achieving both waterproofing and structural stability and aesthetics.

[0061] The shape of the waterproof membrane 3 matches the shape of the pocket hole 51. The shape of the waterproof membrane 3 can be customized according to the customer's individual needs, such as the shape of the pocket hole 51. Figure 10 As shown. The engraved waterproof membrane 3 can be a waterproof membrane, a reflective membrane, or a transparent membrane. Furthermore, the thickness of the waterproof membrane can be slightly adjusted according to the thickness of the fabric 5 to meet the needs of different application scenarios.

[0062] Based on the above specific embodiments, the width of the double-sided hot melt adhesive 6 is less than or equal to the width of the portion of the fabric tape 1 that is not covered by the waterproof membrane.

[0063] In one specific embodiment, the double-sided hot melt adhesive 6 has a moderate width that matches the width of the portion of the fabric tape 1 that is not covered by the waterproof membrane, ensuring that it can be evenly distributed between the fabric tape 1 and the fabric 5, providing sufficient adhesive force, and ensuring connection stability and firmness.

[0064] Because the cured hot melt adhesive is quite hard, the width of the double-sided hot melt adhesive 6 is controlled within the area of ​​the fabric tape 1 that is not covered by the waterproof membrane. During the heat pressing process, the hot melt adhesive will not overflow from the edge of the fabric tape 1, thus effectively avoiding appearance defects caused by hot melt adhesive overflow and ensuring the overall aesthetics of the product. At the same time, the hot melt adhesive will not be exposed, eliminating the risk of scratching the operator and improving the user experience.

[0065] Based on the above specific embodiments, the sidewall of the waterproof membrane 3 contacts the inner wall of the pocket hole 51.

[0066] In one specific embodiment, the shape of the waterproof membrane 3 is consistent with the shape of the pocket hole 51 of the fabric 5, and the size of the waterproof membrane 3 is equal to the size of the pocket hole 51 of the fabric 5. When the pocket hole 51 is fitted with the waterproof membrane 3, the waterproof membrane 3 is located inside the pocket hole 51, and the waterproof membrane 3 and the pocket hole 51 are seamlessly fitted. The outer wall of the waterproof membrane 3 is in close contact with the inner wall of the pocket hole 51, and the waterproof membrane 3 can completely cover the pocket hole 51 to achieve true waterproofing.

[0067] Based on the above specific embodiments, the sidewall of the waterproof membrane 3 is connected to the inner wall of the pocket hole 51 by hot melt adhesive.

[0068] In one specific embodiment, the sidewall of the waterproof membrane 3 is tightly connected to the inner wall of the pocket opening 51 using hot melt adhesive. This connection method not only ensures a tight fit between the waterproof membrane 3 and the pocket opening 51, effectively preventing moisture from seeping in from the sidewall, but also enhances the overall waterproof performance and aesthetics. It is simple and efficient to operate, and does not affect the physical and chemical properties of the zipper, making it suitable for various clothing and bag designs that require waterproofing.

[0069] Of course, the transition fit between the waterproof membrane 3 and the pocket hole 51 is only a preferred embodiment. Alternatively, the size of the waterproof membrane 3 can be slightly smaller than the size of the pocket hole 51, creating a gap between them when the pocket hole 51 is fitted onto the waterproof membrane 3. In this case, hot melt adhesive is used to fill the gap between the waterproof membrane 3 and the pocket hole 51, connecting them and achieving a waterproof effect.

[0070] It should be noted that the hot melt adhesive between the sidewall of the waterproof membrane 3 and the inner wall of the pocket hole 51 can be applied separately, or the double-sided hot melt adhesive 6 between the uncovered portion of the fabric tape 1 and the fabric 5 can be used. At high temperatures, the double-sided hot melt adhesive 6 can quickly melt and penetrate between the fabric 5 and the waterproof membrane 3, forming a strong bond after cooling.

[0071] Based on the above specific embodiments, the length of the tooth 4 is equal to the length at the center line of the waterproof membrane 3, and anti-melting teeth are provided at both ends of the tooth 4.

[0072] In one specific embodiment, the fabric tape 1 is provided with positioning points, which can be small holes, marking lines, or special shapes, used to determine the starting position of the milling teeth. Milling is performed with the positioning point as the starting point and the end face of the waterproof membrane 3 closest to that positioning point as the ending point. Specifically, teeth 4 are milled between the end face of the waterproof membrane 3 and the positioning point on its outer side, ensuring that the length of the teeth 4 is equal to the length of the centerline of the waterproof membrane 3. The teeth 4 and the waterproof membrane 3 are perfectly matched in the length direction, avoiding functional problems or appearance defects caused by inconsistent lengths, ensuring smooth engagement and disengagement of the teeth 4 when the zipper opens and closes, while maintaining the integrity of the waterproof membrane 3.

[0073] The two ends of the tooth 4 are equipped with anti-melting teeth, which are slightly larger or have a different shape than ordinary teeth 4. They are located at the beginning and end positions of the tooth 4 to prevent the slider head 2 from sliding out and jamming the fabric 5, ensuring that the zipper can be opened and closed normally, thus improving quality and reliability.

[0074] Based on the above specific embodiments, the head of the tape 1 is arc-shaped, and the stacked tape and the waterproof membrane 3 are concentric.

[0075] In one specific embodiment, the stacked fabric tape with the waterproof membrane 3 is sized according to the pre-marked positioning points to determine the length of the pocket zipper. Then, the operations of lowering the anti-fusible teeth, inserting the zipper pull, and then uppering the anti-fusible teeth are completed sequentially. Finally, the two ends of the stacked fabric tape are rounded off to form arc-shaped tape ends. The arc-shaped tape ends have smooth edges without sharp corners, making the installation and use of the fabric tape 1 smoother and effectively reducing the inconvenience and wear caused by sharp edges. This not only improves the product's aesthetics but also enhances the user experience, avoiding scratches or discomfort caused by sharp edges.

[0076] The fabric tape and waterproof membrane 3 are designed concentrically, with their center lines perfectly aligned to form a unified structure, ensuring a tight fit and consistency. This concentric design not only enhances the product's aesthetics but also ensures stable zipper opening and closing, avoiding functional or appearance issues caused by inaccurate alignment.

[0077] In another specific embodiment, this application provides a pocket zipper installed on the reverse side of fabric 5, including a pair of fabric strips 1 with teeth 4, the teeth 4 interlocking to form a stacked fabric strip, the teeth 4 being spiral teeth, installed on the reverse side of the fabric strips 1, a slider zipper head 2 connected to the teeth 4, the head of the fabric strip 1 being arc-shaped, and also including a waterproof membrane 3 bonded to the front side of the fabric strip 1, the waterproof membrane 3 having a slit at its center line, the width of the waterproof membrane 3 being less than the width of the stacked fabric strip, the fabric strip 1 having a portion not covered by the waterproof membrane for connecting with fabric 5, the outer edge of the waterproof membrane 3 forming a height difference with the fabric strip 1, so that after the fabric strip 1 is connected to the fabric 5, the surface of the waterproof membrane 3 is flush with the surface of the fabric 5.

[0078] In the above structure, the pocket zipper is installed on the reverse side of the fabric 5, concealing the teeth 4 and the slider zipper head 2, resulting in a neat and aesthetically pleasing product appearance that does not affect the front visual effect. The fabric tape 1 carries the teeth 4; the teeth 4 of two fabric tapes 1 mesh together to form a stacked fabric tape, realizing the zipper's opening and closing function. Preferably, the teeth 4 are spiral teeth, which not only improves the zipper's strength and durability but also makes the opening and closing process smoother. The spiral teeth are installed on the reverse side of the fabric tape 1, so during normal use, the teeth 4 do not directly contact the front side of the fabric 5, thereby reducing wear and scratches on the fabric 5 and extending the product's service life. The slider zipper head 2 is connected to the teeth 4, and by sliding on the teeth 4, the zipper can be quickly opened or smoothly closed, providing convenient and comfortable operation, ensuring that the user can easily pull the zipper.

[0079] Preferably, the tape 1 has a rounded end with gentle curves at both ends, without sharp corners, reducing the risk of scratches or abrasions to the user during use. During installation, the rounded end better conforms to the shape of the fabric 5, facilitating installation. Furthermore, the tape 1 has a stable structure, preventing the end from getting stuck in the teeth 4 or the slider zipper 2, ensuring smooth zipper operation.

[0080] The waterproof membrane 3 is adhered to the front side of the fabric tape 1, and its width is smaller than the width of the stacked fabric tape, and it is adhered to the middle position of the stacked fabric tape. In this way, the front side of the fabric tape 1 is divided into two parts: the part covered by the waterproof membrane and the part not covered by the waterproof membrane.

[0081] The waterproof membrane 3, covering the portion of the fabric tape 1, forms an integral structure with the fabric tape 1. The waterproof membrane 3 is waterproof and enhances the zipper's waterproof performance, preventing moisture from seeping into the interior through the zipper. A slit is cut along the center line of the waterproof membrane 3 along its length, aligned with the center seam of the stacked fabric tape. During installation, the pocket hole 51 of the fabric 5 is first fitted onto the waterproof membrane 3, ensuring the slit of the waterproof membrane 3 aligns with the center seam of the zipper, allowing the zipper to be accurately installed in the designated position of the pocket hole 51. When the teeth 4 are pulled open, opening the pocket hole 51, the waterproof membrane 3 simultaneously unfolds at the slit, forming an opening, ensuring the pocket hole 51 can open normally. Conversely, when the teeth 4 engage, closing the pocket hole 51, the two pieces of the waterproof membrane 3 fit tightly together at the slit, creating a seamless seal and effectively preventing moisture intrusion, ensuring a waterproof effect.

[0082] The portion of the fabric tape 1 not covered by the waterproof membrane, i.e., the stacked fabric tape with a blank area around the waterproof membrane 3, is used to connect with the fabric 5, providing an adhesive position for the subsequent connection between the fabric tape 1 and the fabric 5. During connection, the pocket hole 51 of the fabric 5 is fitted onto the waterproof membrane 3, with the waterproof membrane 3 located inside the pocket hole 51, covering the pocket hole 51, which is not only aesthetically pleasing but also waterproof. The portion of the fabric tape 1 not covered by the waterproof membrane contacts and connects with the reverse side of the fabric 5, ensuring a firm bond between the fabric tape 1 and the fabric 5. Preferably, the portion of the fabric tape 1 not covered by the waterproof membrane and the reverse side of the fabric 5 can be joined by heat pressing, without damaging the integrity of the waterproof membrane 3, avoiding the pinhole problem that occurs in traditional sewing methods, thereby improving the waterproof performance of the zipper.

[0083] A height difference is formed between the outer edge of the waterproof membrane 3 and the fabric tape 1, meaning the portion of the fabric tape 1 uncovered by the waterproof membrane is higher than the portion uncovered by it. After the fabric tape 1 is connected to the fabric 5, the surface of the waterproof membrane 3 is flush with the surface of the fabric 5, and there is no height difference between the fabric 5 and the waterproof membrane 3. The waterproof membrane 3 and the fabric 5 are seamlessly connected. This maintains the flatness of the fabric 5, making the zipper look cleaner and more aesthetically pleasing, and also helps the waterproof membrane 3 to better adhere to the fabric 5, enhancing the waterproof effect.

[0084] The pocket zipper of this utility model has a built-in waterproof membrane 3, which provides waterproof performance and fulfills the basic functions of a zipper. The fabric 5 is flush with the surface of the waterproof membrane 3, without gaps or steps, and fits perfectly with the pocket hole 51. The appearance is simple and smooth. The connection surface between the waterproof membrane 3 and the fabric strip 1 is flat and smooth, without bubbles, and the connection effect is good.

[0085] In another specific embodiment, this application provides a pocket zipper installed on the reverse side of fabric 5, including a pair of fabric strips 1 with teeth 4, the teeth 4 interlocking to form a stacked fabric strip, the teeth 4 being spiral teeth, installed on the reverse side of the fabric strips 1, a slider zipper head 2 connected to the teeth 4, and also including a waterproof membrane 3 bonded to the front side of the fabric strips 1, the waterproof membrane 3 having a slit at its center line, the width of the waterproof membrane 3 being less than or equal to the width of the stacked fabric strips, the pocket zipper having a connecting portion for connecting with fabric 5, the connecting portion covering at least a portion of the waterproof membrane 31, at least a portion of the waterproof membrane 31 and the waterproof membrane 32 in the area not connected to the fabric forming a height difference after connection, so that after the pocket zipper is connected to fabric 5, the surface of the waterproof membrane 32 in the area not connected to the fabric is flush with the surface of fabric 5.

[0086] In the above structure, the pocket zipper is installed on the reverse side of the fabric 5, concealing the teeth 4 and the slider zipper head 2, maintaining a neat and aesthetically pleasing product appearance. The fabric tape 1 supports the teeth 4, which mesh with each other to achieve the opening and closing function. Preferably, the teeth 4 are spiral teeth, which are strong and allow for smooth opening and closing. The teeth 4 are located on the reverse side of the fabric tape 1, reducing wear and scratches on the fabric 5. The slider zipper head 2 is connected to the teeth 4, and the zipper is closed by sliding on the teeth 4, making operation convenient and comfortable.

[0087] The waterproof membrane 3 is bonded to the front of the fabric tape 1, forming an integral structure with it. The waterproof membrane 3 is waterproof and enhances the zipper's waterproof performance, preventing moisture from seeping into the zipper. A slit is cut along the center line of the waterproof membrane 3 along its length, aligned with the center seam of the fabric tape, meaning the slit of the waterproof membrane 3 is aligned with the center seam of the zipper. When the teeth 4 are pulled open, opening the pocket opening 51, the waterproof membrane 3 simultaneously unfolds at the slit, forming an opening and ensuring the pocket opening 51 can be opened normally. Conversely, when the teeth 4 engage, closing the pocket opening 51, the two pieces of the waterproof membrane 3 fit tightly together at the slit, creating a seamless seal and effectively preventing moisture intrusion, ensuring a waterproof effect.

[0088] The waterproof membrane 3 consists of two parts. One part overlaps with the fabric 5 and is the bottom layer membrane for connecting with the fabric 5, i.e., at least part of the waterproof membrane 31. The other part completely overlaps with the pocket hole 51 and is the top layer membrane that is not connected with the fabric 5, i.e., the waterproof membrane 32 for the area that is not connected with the fabric.

[0089] The pocket zipper has a connecting portion for connecting to the fabric 5, and the connecting portion covers at least a portion of the waterproof membrane 31, that is, a partial or complete edge of the waterproof membrane 3 extends beyond the edge of the pocket opening 51.

[0090] Specifically, when a portion of the edge of the waterproof membrane 3 extends beyond the edge of the pocket opening 51, such as... Figure 5 and Figure 6 As shown, the connecting portion includes at least a portion of a waterproof membrane 31 and at least a portion of a fabric strip, which together form a ring around the pocket opening 51. The size of the area where these two portions connect with the fabric 5 is not limited. The waterproof membrane 31 can be continuous or discontinuous.

[0091] When the entire edge of the waterproof membrane 3 extends beyond the edge of the pocket hole 51, such as Figure 7 and Figure 8 As shown, the connecting part includes only a portion of the waterproof membrane 31, that is, the bottom layer of the waterproof membrane 3 surrounds the pocket hole 51. The bottom layer can be connected to the fabric 5 around the pocket hole 51.

[0092] More specifically, the waterproof membrane 3 is bonded to the middle of the stacked fabric strips. When the width of the waterproof membrane 3 is less than the width of the stacked fabric strips, the portion of the fabric strip 1 not covered by the top layer membrane includes both the portion of the fabric strip 1 covered by the bottom layer membrane and the portion of the fabric strip 1 not covered by the bottom layer membrane. When the entire edge of the waterproof membrane 3 extends beyond the edge of the pocket hole 51, the portion of the fabric strip 1 covered by the bottom layer membrane needs to be connected to the fabric 5, and the portion of the fabric strip 1 not covered by the bottom layer membrane can be selectively connected to the fabric 5. When the width of the waterproof membrane 3 is equal to the width of the stacked fabric strips, the edge of the waterproof membrane 3 completely overlaps with the edge of the stacked fabric strips, and the portion of the fabric strip 1 not covered by the top layer membrane is completely covered by the bottom layer membrane. At this time, the portion of the fabric strip 1 covered by the bottom layer membrane is connected to the fabric 5.

[0093] After the pocket zipper is attached to fabric 5, a height difference is formed between at least a portion of the waterproof membrane 31 and the area of ​​the waterproof membrane 32 not attached to the fabric. Specifically, the area of ​​the waterproof membrane 32 not attached to the fabric is higher than at least a portion of the waterproof membrane 31, meaning the top layer membrane is higher than the bottom layer membrane. After the pocket zipper is attached to fabric 5, the surface of the waterproof membrane 32 in the area not attached to the fabric is flush with the surface of fabric 5, without any height difference, and the waterproof membrane 3 is seamlessly connected to fabric 5. This maintains the flatness of fabric 5, makes the zipper look cleaner and more aesthetically pleasing, and also helps the waterproof membrane 3 better adhere to fabric 5, enhancing the waterproof effect.

[0094] The pocket zipper of this utility model has a built-in waterproof membrane 3, which provides waterproof performance and fulfills the basic functions of a zipper. The fabric 5 is flush with the surface of the waterproof membrane 3, without gaps or steps, and fits perfectly with the pocket hole 51. The appearance is simple and smooth. The connection surface between the waterproof membrane 3 and the fabric strip 1 is flat and smooth, without bubbles, and the connection effect is good.

[0095] Based on the above specific embodiments, the head of the tape 1 is arc-shaped.

[0096] In one specific embodiment, the ends of the fabric tape 1 are designed with a rounded shape, meaning that the ends of the fabric tape 1 present a soft curved shape, rather than a traditional straight line or sharp angle. The radius and curvature of the rounded shape can be adjusted according to actual usage needs to adapt to different product designs and functional requirements.

[0097] The rounded zipper pull makes the pocket zipper smoother and more streamlined, reducing the visual abruptness of sharp edges and enhancing the product's aesthetics, making it especially suitable for clothing, bags, and other products where appearance is paramount. Simultaneously, the absence of sharp corners reduces the risk of scratches or abrasions to the user during use, making it particularly suitable for products that come into direct contact with the skin. During installation, the rounded zipper pull better conforms to the shape of the fabric 5, reducing friction and resistance and improving installation efficiency. Furthermore, the stable structure of the fabric tape 1 prevents the zipper pull from getting stuck in the teeth 4 or the slider zipper pull 2, ensuring smooth zipper operation, extending the zipper's lifespan, and reducing zipper failure due to zipper pull damage.

[0098] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0099] The pocket zipper provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, this utility model is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pocket zipper, installed on the reverse side of fabric (5), comprising a pair of fabric strips (1) having teeth (4), the teeth (4) engaging with each other to form a zippered strip, wherein a slider zipper head (2) is connected to the teeth (4), characterized in that, It also includes a waterproof membrane (3) bonded to the front of the fabric strip (1), the waterproof membrane (3) having a slit at its center line aligned with the center seam of the stacked fabric strip, the width of the waterproof membrane (3) being less than the width of the stacked fabric strip, the fabric strip (1) having a portion not covered by the waterproof membrane for connection to the fabric (5), the pocket holes (51) of the fabric (5) fitting onto the waterproof membrane (3), the portion of the fabric strip (1) not covered by the waterproof membrane being connected to the reverse side of the fabric (5), and the surface of the waterproof membrane (3) being flush with the surface of the fabric (5).

2. The pocket zipper of claim 1, wherein, The fabric tape (1) and the fabric (5) are hot-pressed together by double-sided hot melt adhesive (6). The double-sided hot melt adhesive (6) is ring-shaped with a hollow hole in the middle. The shape of the hollow hole is consistent with the pocket hole (51) of the fabric (5). When connected, the hollow hole of the double-sided hot melt adhesive (6) is aligned with the pocket hole (51) of the fabric (5).

3. The pocket zipper of claim 2, wherein, The thickness of the waterproof membrane (3) is equal to the sum of the thickness of the fabric (5) and the thickness of the double-sided hot melt adhesive (6) after hot melting.

4. The pocket zipper of claim 2, wherein, The width of the double-sided hot melt adhesive (6) is less than or equal to the width of the portion of the fabric tape (1) that is not covered by the waterproof membrane.

5. The pocket zipper of claim 1, wherein, The sidewall of the waterproof membrane (3) is in contact with the inner wall of the pocket hole (51).

6. The pocket zipper of claim 5, wherein, The sidewall of the waterproof membrane (3) is connected to the inner wall of the pocket hole (51) by hot melt adhesive.

7. The pocket zipper of claim 1, wherein, The tape (1) has an arc-shaped head, and the stacked tape and the waterproof membrane (3) are concentric.

8. A pocket zipper, installed on the reverse side of fabric (5), comprising a pair of fabric strips (1) having teeth (4), the teeth (4) engaging with each other to form a zippered fabric strip, the teeth (4) being spiral teeth, installed on the reverse side of the fabric strips (1), and a slider zipper head (2) connected to the teeth (4), characterized in that, The tape (1) has an arc-shaped head and includes a waterproof membrane (3) bonded to the front of the tape (1). The waterproof membrane (3) has a slit at its center line. The width of the waterproof membrane (3) is smaller than the width of the stacked tape. The tape (1) has a portion not covered by the waterproof membrane for connection with the fabric (5). The outer edge of the waterproof membrane (3) and the tape (1) form a height difference, so that after the tape (1) and the fabric (5) are connected, the surface of the waterproof membrane (3) is flush with the surface of the fabric (5).

9. A pocket zipper, installed on the reverse side of fabric (5), comprising a pair of fabric strips (1) having teeth (4), the teeth (4) engaging with each other to form a zippered fabric strip, the teeth (4) being spiral teeth, installed on the reverse side of the fabric strips (1), and a slider zipper head (2) connected to the teeth (4), characterized in that, It also includes a waterproof membrane (3) bonded to the front of the fabric strip (1), the waterproof membrane (3) having a slit at its center line, the width of the waterproof membrane (3) being less than or equal to the width of the stacked fabric strip, the pocket zipper having a connecting portion for connecting to the fabric (5), the connecting portion covering at least a portion of the waterproof membrane (31), the at least a portion of the waterproof membrane (31) and the waterproof membrane (32) in the area not connected to the fabric forming a height difference after connection, so that after the pocket zipper is connected to the fabric (5), the surface of the waterproof membrane (32) in the area not connected to the fabric is flush with the surface of the fabric (5).

10. The pocket zipper of claim 9, wherein, The head of the cloth tape (1) is arc-shaped.

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