Flexible package with chain teeth

Abstract

This application discloses a flexible bag with chain teeth, comprising: fabric, core thread, sewing thread, and multiple chain teeth; the fabric includes a fabric body, a pleated edge, and a connecting portion, the pleated edge conforming to the edge region of the fabric body, and the connecting portion connecting between the edge end of the fabric body and the edge end of the pleated edge; the connecting portion has a thread channel, through which the core thread passes; the sewing thread is sewn onto the fabric and locks the connecting portion, thereby tightly wrapping the core thread through the connecting portion; multiple chain teeth are arranged along the extension direction of the core thread, and each chain tooth is connected to the area of ​​the connecting portion of the fabric. This application can at least solve problems such as the core thread being not secure.

Description

Technical Field

[0001] This application belongs to the technical field of chain teeth, bags, etc., and specifically relates to a flexible bag with chain teeth. Background Technology

[0002] Some flexible bags in related technologies have their individual zippers sewn directly to the edge of the bag's opening. However, this process requires manufacturing the zipper separately—that is, attaching the zipper teeth to the zipper belt to form the zipper, and then sewing the entire zipper to the edge of the bag's opening. This method inherently increases production steps, extends the production cycle, reduces production efficiency, and further, the need to separately configure the zipper belt during zipper production increases material utilization and raises costs.

[0003] To address the aforementioned issues, some flexible bags install the zipper teeth separately at the edge of the bag's opening. Specifically, the core thread is first tied to the surface of the fabric at the bag's opening, and then the zipper teeth are sewn into the area where the core thread is located. However, in this method, the core thread is prone to loosening on the fabric surface, leading to insecure zipper teeth and affecting the proper opening and closing of the zipper pull. Utility Model Content

[0004] The purpose of this application is to provide a flexible package with chain teeth, which can at least solve problems such as weak core wires.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] This application provides a flexible bag with chain teeth, including: fabric, core thread, stitching thread and multiple chain teeth;

[0007] The fabric includes a fabric body, a folded edge, and a connecting portion. The folded edge is fitted to the edge area of ​​the fabric body, and the connecting portion is connected between the edge end of the fabric body and the edge end of the folded edge.

[0008] The connecting part is provided with a wire channel, and the core wire passes through the wire channel;

[0009] The stitching is sewn onto the fabric and the connecting part is locked to tightly wrap the core thread through the connecting part;

[0010] The plurality of said chain teeth are arranged along the extension direction of the core thread, and each said chain tooth is connected to the area where the connecting part of the fabric is located.

[0011] In this embodiment, the fabric edge has a folded edge. The folded edge's fit snugly against the fabric body improves the strength and rigidity of the fabric edge area, preventing excessive flab. This enhances the stability of the zipper teeth after installation. The connection between the folded edge and the fabric body can have a thread channel, within which the core thread is placed. The thread channel accommodates the core thread, and the fabric is further sewn together to lock the connection. This tightly secures the core thread within the thread channel, preventing it from shifting. Compared to related technologies that fix the core thread to the fabric surface, this embodiment uses the fabric to wrap the core thread, improving its stability and strength. It also enhances the stability of the zipper teeth, preventing them from loosening and ensuring smooth operation of the zipper pull. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the fabric and core yarn structure disclosed in the embodiments of this application;

[0013] Figure 2 This is a partial schematic diagram of the single-layer fabric, core thread, stitching, and chain teeth disclosed in the embodiments of this application;

[0014] Figure 3 This is a cross-sectional view of the area where the folded edge and the fabric body of the first type of single-layer fabric disclosed in the embodiments of this application are attached;

[0015] Figure 4 This is a cross-sectional view of the area where the folded edge and the fabric body are attached in the case of a single-layer fabric as disclosed in the embodiments of this application.

[0016] Figure 5 This is a cross-sectional view of the area where the folded edge and the fabric body of the third type of single-layer fabric disclosed in the embodiments of this application are attached;

[0017] Figure 6 This is a partial schematic diagram of the multilayer fabric, core thread, stitching, and chain teeth disclosed in the embodiments of this application;

[0018] Figure 7 This is a cross-sectional view of the area where the folded edge and the fabric body of the first type of multilayer fabric disclosed in the embodiments of this application are attached;

[0019] Figure 8 This is a cross-sectional view of the area where the folded edge and the fabric body are attached in the case of a multi-layered fabric as disclosed in the embodiments of this application.

[0020] Figure 9 This is a cross-sectional view of the area where the folded edge and the fabric body are attached in the case of a multi-layered fabric as disclosed in the embodiments of this application.

[0021] Figure 10 This is a schematic diagram of a flexible bag with chain teeth disclosed in an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10-Fabric; 10a-Bag body; 11-Fabric body; 12-Hem; 13-Connecting part; M-Seam; N-Fitting area; N1-Fitting seal;

[0024] 20-core wire;

[0025] 30-stitch;

[0026] 40-Chain teeth. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0029] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0030] refer to Figures 1 to 10 This application discloses a flexible bag with teeth 40. The flexible bag includes a fabric 10, a core thread 20, a sewing thread 30 and a plurality of teeth 40.

[0031] Fabric 10 is a basic component that provides a mounting base for structures such as core thread 20, stitch thread 30, and chain teeth 40. Fabric 10 may include a fabric body 11, a hem 12, and a connecting portion 13. The hem 12 is fitted to the edge area of ​​the fabric body 11, and the connecting portion 13 connects the edge end of the fabric body 11 and the edge end of the hem 12. Furthermore, fabric 10 can form a flexible bag body 10a, with the chain teeth 40 fixed to the edge of fabric 10 at the opening of bag body 10a to facilitate opening and closing of the opening.

[0032] For example, a flexible bag with chain teeth 40 may include a school bag, a travel bag, a sports bag, a decorative bag, etc.; correspondingly, the fabric 10 may be the fabric of a flexible bag such as a school bag, a travel bag, a sports bag, a decorative bag, etc.

[0033] In some embodiments, the fabric body 11, the hem 12, and the connecting portion 13 can be independent of each other. The edge of the hem 12 is fixedly connected to the connecting portion 13, and the edge of the fabric body 11 is fixedly connected to the connecting portion 13. Furthermore, in the thickness direction of the fabric 10, the surface of the hem 12 is in contact with the surface of the fabric body 11. The fixed connection can be achieved by bonding, welding, sewing, heat fusion, etc., and other methods are also possible, which are not specifically limited here.

[0034] In other embodiments, the fabric body 11, the hem 12, and the connecting portion 13 can also be an integral structure, that is, the fabric 10 is a single structure. In the initial state, the fabric 10 can be in a flat form. A certain width of the edge of the fabric 10 is folded 180° to form the hem 12. The area folded 180° can be regarded as the hem 12, the unfolded area can be regarded as the fabric body 11, and the area deformed during the folding process can be regarded as the connecting portion 13.

[0035] The connecting part 13 may be provided with a thread track M, through which the core thread 20 passes. Optionally, the connecting part 13 is a planar structure. When the hem 12 is in contact with the fabric body 11, the connecting part 13 deforms. As the connecting part 13 deforms, its surface gradually forms the thread track M. In this way, since the inner surface of the connecting part 13 cannot provide space to accommodate the core thread 20, the outer surface of the connecting part 13 can protrude from the outer surface of the hem 12 and the outer surface of the fabric body 11, respectively. That is, after accommodating the core thread 20, the connecting part 13 can form a convex structure.

[0036] Alternatively, the core wire 20 can be completely threaded through the cable track M, or a section of the core wire 20 can be threaded through the cable track M. The specific choice can be made based on the actual working conditions.

[0037] Considering that although the folded edge 12 and the fabric body 11 are close together, they cannot be relatively fixed, thus failing to secure the core thread 20 and causing it to move easily, in this embodiment of the application, the stitch 30 is sewn onto the fabric 10, and the connecting part 13 is locked by the stitch 30. This allows the connecting part 13 to tightly enclose the core thread 20, achieving a fixing effect and ensuring that the core thread 20 does not move arbitrarily.

[0038] Optionally, the core thread 20 located in the connecting part 13 can be directly sewn together with the fabric 10 using the sewing thread 30, so that the sewing thread 30 and the connecting part 13 together limit the core thread 20 and ensure the installation stability of the core thread 20; or the connecting part 13 can be locked by sewing the fabric 10 with the sewing thread 30, and the connecting part 13 indirectly limits the core thread 20 to ensure the installation stability of the core thread 20.

[0039] In addition, other methods can be used, such as welding, bonding, or hot melting, to fix the core wire 20 to the connector 13 to ensure the stability and firmness of the core wire 20 within the track M.

[0040] In this embodiment, multiple chain teeth 40 are arranged along the extension direction of the core thread 20, and each chain tooth 40 is connected to the area where the connecting portion 13 of the fabric 10 is located. Based on this, the chain teeth 40 can tightly wrap around the area where the core thread 20 is located, thereby stably and firmly fixing and assembling with the fabric 10.

[0041] Optionally, the multiple chain teeth 40 can be evenly arranged along the extension direction of the core thread 20; in addition, each chain tooth 40 can be connected to the connecting part 13, or each chain tooth 40 can be connected to a position near the connecting part 13 in the bonding area N of the hem 12 and the fabric body 11, or each chain tooth 40 can be connected to both the connecting part 13 and a position near the connecting part 13 in the bonding area N. Of course, other connection methods are also possible, as long as the stability and firmness of the chain teeth 40 can be guaranteed, and the specific form is not limited.

[0042] Based on the above configuration, the embodiment of this application improves the strength and rigidity of the edge area of ​​the fabric 10 by fitting the hem 12 with the fabric body 11, so that the edge of the fabric 10 is no longer excessively soft and droopy. After installing the chain teeth 40, it can help improve the installation stability of the chain teeth 40. The connecting part 13 connecting the hem 12 and the fabric body 11 can be provided with a thread track M, and the core thread 20 is set in the thread track M. In this way, the core thread 20 can be accommodated by the thread track M. Furthermore, the fabric 10 is sewn with stitch 30 to lock the connecting part 13. Thus, the core thread 20 in the thread track M can be tightly wrapped by the connecting part 13 to ensure that the core thread 20 will not move arbitrarily.

[0043] Compared to the method of fixing the core wire 20 to the surface of the fabric 10 in related technologies, the embodiment of this application uses the fabric 10 to wrap the core wire 20 tightly, which improves the stability and firmness of the core wire 20, and also helps to improve the installation stability of the chain teeth 40, making the chain teeth 40 less prone to loosening, so as to ensure the smooth opening or closing of the zipper pull on the chain teeth 40.

[0044] In some embodiments, the stitch 30 may be sewn into the contact area N between the folded edge 12 and the fabric body 11 to ensure the stability of the contact between the folded edge 12 and the fabric body 11 and to prevent the folded edge 12 from detaching from the surface of the fabric body 11.

[0045] Optionally, the thread 30 can be sewn into the bonding area N along the extension direction of the core thread 20; of course, the thread 30 can also be sewn into the bonding area N along a curved sewing path, such as a zigzag sewing path, an arc sewing path, a cross sewing path, etc.

[0046] Additionally, the seam 30 sewn in the bonding area N can be one or more, depending on the width of the hem 12. Optionally, multiple seams 30 can be arranged along the width direction of the hem 12 to further improve the stitching strength between the hem 12 and the fabric body 11, ensuring the stability and firmness of the bonding, and preventing the hem 12 from lifting off relative to the fabric 10 in any part. The width direction of the hem 12 is perpendicular to the extension direction of the core thread 20.

[0047] Considering that in some cases, it is necessary to lock the connector 13 by sewing the thread 30 into the mating area N, so as to ensure the installation stability of the core thread 20 by tightly wrapping the core thread 20 with the connector 13, the sewing position of the thread 30 can be located in the mating area N near the connector 13, so as to lock the mating area N near the connector 13 and further improve the locking effect of the connector 13.

[0048] refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 In some embodiments, the distance between the stitching position of the suture 30 and the center line of the core thread 20 can be greater than or equal to r, and less than or equal to 2r. That is, the minimum distance between the stitching position and the center line of the core thread 20 is the radius of the core thread 20. In this case, the suture 30 is sewn to the outer surface of the core thread 20. The maximum distance between the stitching position and the center line of the core thread 20 is the diameter of the core thread 20. In this case, the distance between the outer surfaces of the suture 30 and the core thread 20 is the radius of the core thread 20. Wherein, r is the radius of the core thread 20.

[0049] The stitching position of the suture 30 described above can, to a certain extent, ensure the tight wrapping effect of the connecting part 13 on the core thread 20, or allow the core thread 20 to have an acceptable range (or error range) of fluctuation within the thread track M, thereby ensuring the installation stability of the core thread 20. Of course, the stitching position can also be located at other positions in the bonding area N, which is not specifically limited here.

[0050] refer to Figure 5 and Figure 9 In some other embodiments, the sewing thread 30 can also be sewn between the connecting portion 13 and the core thread 20. Based on this, the core thread 20 and the connecting portion 13 can be sewn and fixed by the sewing thread 30, thereby ensuring the relative stability and firmness between the core thread 20 and the fabric 10. It should be noted that in this method, the sewing thread 30 can directly pierce through the connecting portion 13 and the core thread 20.

[0051] Optionally, the sewing position of the thread 30 can be located between the center line of the core thread 20 and the sealing opening N1 of the hem 12 and the fabric body 11. The sealing opening N1 is located on the side of the bonding area N of the hem 12 and the fabric body 11 closer to the connecting portion 13. Alternatively, it can be understood that the sealing opening N1 is located at the edge of the hem 12 and the edge of the fabric body 11. Based on this, on the one hand, the thread 30 can lock the connecting portion 13 and tightly wrap the core thread 20 through the connecting portion 13; on the other hand, the thread 30 can directly fix the core thread 20 to the connecting portion 13. Therefore, the installation stability and firmness of the core thread 20 can be further improved.

[0052] For example, there may be one or more sutures 30. When there are multiple sutures 30, the stitching strength between the joint 13 and the core thread 20 can be further improved, which is beneficial to improving the stability and firmness of the core thread 20.

[0053] In some more specific embodiments, the distance between the stitching position and the center line of the core thread 20 is greater than or equal to 1 / 3r and less than r. This method makes the stitching position closer to the seal N1, which is beneficial to improving the locking effect on the joint 13. Of course, it is not limited to this position and can be other positions, depending on the actual working conditions.

[0054] In some embodiments, the connecting portion 13 can be a cylindrical structure, the inner cavity of which is the thread channel M. It should be noted that when the fabric 10 is in a flat state, the connecting portion 13 can be a planar structure. As the hem 12 is gradually folded, the connecting portion 13 gradually bends and deforms to form a cylindrical structure, surrounding the thread channel M to provide space for accommodating the core thread 20. Optionally, the cylindrical structure can be a circular structure; of course, it can also be other shapes, which are not specifically limited here.

[0055] The sidewalls of the tubular structure may have openings, with one side of the opening connected to the edge of the fabric body 11 and the other side connected to the edge of the hem 12. Based on this arrangement, when the hem 12 is against the surface of the fabric body 11, the two sides of the opening can be brought closer together to facilitate locking the tubular structure, allowing it to tightly wrap the core thread 20 and improve its stability and strength. It should be noted that the locking effect on the opening can come from the tension of the hem 12 against the surface of the fabric 10, or from the tension of the seam thread 30, to ensure the opening is locked and to guarantee the tight wrapping of the core thread 20.

[0056] In this embodiment of the application, the fabric 10 may not be limited to one layer, such as... Figures 2 to 5 As shown; of course, fabric 10 can also be multi-layered, that is, fabric 10 can include multiple fabric layers, which are stacked together, such as... Figures 6 to 9 As shown.

[0057] Optionally, the multiple fabric layers can be stacked by means of bonding, heat fusion, welding, sewing, etc. When the fabric 10 includes multiple fabric layers, the fabric body 11, the hem 12, and the connecting part 13 can all be composed of multiple fabric layers.

[0058] Considering that the folded edge 12 can be folded to the surface of the fabric body 11, the connecting part 13 can be deformed accordingly. Thus, after folding, the part of the innermost fabric layer located inside the folded edge 12 fits into the part of the innermost fabric layer located inside the fabric body 11, and the connecting part 13 is provided with a thread M.

[0059] Alternatively, the folded fabric 10 can be sewn together with thread 30 to tightly wrap the core thread 20. Optionally, thread 30 can be used to sew the portions of the multiple fabric layers located within the folded edge 12 and the portions of the multiple fabric layers located within the fabric body 11; of course, the portions of the multiple fabric layers located at the connecting part 13 can also be sewn to the core thread 20. The specific sewing method can be selected according to the actual working conditions.

[0060] refer to Figure 2 and Figure 6 When installing the chain teeth 40, each chain tooth 40 can be connected to the area of ​​the outermost fabric layer located within the joint 13. In this way, by setting multiple fabric layers, the overall strength and rigidity of the fabric 10 can be improved, thereby improving the stability and firmness of the chain teeth 40 in terms of load bearing and installation.

[0061] It should be noted that the folded edge 12 can be folded towards the side of the fabric body 11. The side facing the folding direction is the inner side, and the side away from the folding direction is the outer side.

[0062] In some embodiments, the chain teeth 40 may be connected to the area where the joint portion 13 of the fabric 10 is located by snap-fit ​​or injection molding.

[0063] When the chain tooth 40 is installed using a snap-fit ​​method, the chain tooth 40 may be equipped with a claw. Correspondingly, the area where the connecting part 13 of the fabric 10 is located may be equipped with a slot. The stability and firmness of the chain tooth 40 installation are ensured by the snap-fit ​​cooperation between the claw and the slot.

[0064] When the chain teeth 40 are installed by injection molding, the chain teeth 40 can be directly injection molded into the area where the connecting part 13 of the fabric 10 is located, so as to ensure the stability and firmness of the chain teeth 40, and also reduce the installation difficulty of the chain teeth 40.

[0065] For example, the chain tooth 40 can be a metal chain tooth or a plastic chain tooth.

[0066] When the chain tooth 40 is a metal chain tooth, it can be installed to the area where the connecting part 13 of the fabric 10 is located by means of snap-fit ​​or other methods; when the chain tooth 40 is a plastic chain tooth, it can be installed to the area where the connecting part 13 of the fabric 10 is located by means of snap-fit, injection molding or other methods.

[0067] For example, the plastic chain teeth can be rubber chain teeth, such as... Figure 10 As shown.

[0068] In some embodiments, the contact area N between the folded edge 12 and the fabric body 11 may be provided with a connecting hole. Correspondingly, the chain tooth 40 may be provided with a connecting part, and the connecting part is provided in the connecting hole, which can further improve the installation stability and firmness of the chain tooth 40.

[0069] Optionally, when the chain tooth 40 is installed using a snap-fit ​​method, the connecting part can be a snap protrusion, the connecting hole can be a snap-fit ​​hole, and the snap protrusion and the snap-fit ​​hole engage in a snap-fit ​​fit.

[0070] When the chain tooth 40 is installed by injection molding, the connecting hole can be an injection hole and the connecting part can be an injection rod. That is, during the injection molding process, the injection material flows into the connecting hole to form an injection rod, so as to ensure the installation stability and firmness of the chain tooth 40.

[0071] In addition, the connecting hole can also be a hot-melt hole formed during the hot-melt process. The hot-melt process can also achieve the locking effect of the connecting part 13, so as to tightly wrap the core wire 20 through the connecting part 13.

[0072] Optionally, a portion of the chain tooth 40 may cover the connecting part 13 and be snapped into place with the connecting part 13, which helps to improve the installation stability and firmness of the chain tooth 40.

[0073] In summary, in this embodiment of the application, the core wire 20 is wrapped tightly with fabric 10, which improves the stability and firmness of the core wire 20 and also helps to improve the installation stability of the chain teeth 40, making the chain teeth 40 less prone to loosening, so as to ensure the smooth opening and closing of the zipper pull on the chain teeth 40.

[0074] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A flexible bag with chain teeth, characterized in that, include: Fabric (10), core thread (20), stitching (30) and multiple chain teeth (40); The fabric (10) includes a fabric body (11), a folded edge (12) and a connecting part (13). The folded edge (12) is attached to the edge area of ​​the fabric body (11), and the connecting part (13) is connected between the edge end of the fabric body (11) and the edge end of the folded edge (12). The connecting part (13) is provided with a wire channel (M), and the core wire (20) passes through the wire channel (M). The seam (30) is sewn onto the fabric (10) and the connecting part (13) is locked to wrap the core thread (20) through the connecting part (13). Multiple chain teeth (40) are arranged along the extension direction of the core thread (20), and each chain tooth (40) is connected to the area where the connecting part (13) of the fabric (10) is located.

2. The flexible package according to claim 1, characterized in that, The seam (30) is sewn into the area (N) where the hem (12) meets the fabric body (11).

3. The flexible package according to claim 2, characterized in that, The distance between the suture position of the suture (30) and the center line of the core thread (20) is greater than or equal to r and less than or equal to 2r, where r is the radius of the core thread (20).

4. The flexible package according to claim 1, characterized in that, The suture (30) is sewn to the connecting part (13) and the core thread (20).

5. The flexible package according to claim 4, characterized in that, The stitching position of the stitch (30) is located between the center line of the core thread (20) and the fitting seal (N1) of the hem (12) and the fabric body (11), wherein the fitting seal (N1) is located on the side of the fitting area (N) of the hem (12) and the fabric body (11) near the connecting part (13).

6. The flexible package according to claim 5, characterized in that, The distance between the suture position and the center line of the core wire (20) is greater than or equal to 1 / 3r and less than r, where r is the radius of the core wire (20).

7. The flexible package according to any one of claims 1 to 6, characterized in that, The fabric (10) includes multiple layers of fabric, and the fabric body (11), the hem (12) and the connecting part (13) are all composed of multiple layers of the fabric. The innermost fabric layer located within the fold (12) is attached to the innermost fabric layer located within the fabric body (11), and the connecting part (13) is provided with the thread (M). Each of the chain teeth (40) is connected to the area of ​​the outermost fabric layer located within the joint (13).

8. The flexible package according to any one of claims 1 to 6, characterized in that, The chain teeth (40) are connected to the area where the connecting part (13) of the fabric (10) is located by snap-fit ​​or injection molding.

9. The flexible package according to any one of claims 1 to 6, characterized in that, The chain teeth (40) are metal chain teeth or plastic chain teeth.

10. The flexible package according to any one of claims 1 to 6, characterized in that, The folded edge (12) and the fabric body (11) have a connecting hole in the fitting area (N); The chain tooth (40) has a connecting portion, which is located in the connecting hole.

11. The flexible package according to claim 10, characterized in that, The connecting hole is a hot-melt hole, an injection-molded hole, or a snap-fit ​​hole.

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