Zipper cloth tape capable of being expanded and expanded

Abstract

The utility model provides a zipper cloth belt capable of being expanded and expanded, which comprises an upper-layer belt, a middle-layer belt and a lower-layer belt which are sequentially arranged from top to bottom, one end of the middle-layer belt is flush with and connected with one end of the upper-layer belt, and the other end of the upper-layer belt extends out of the other end of the middle-layer belt to form a first connecting part; one end of the lower-layer belt is flush with and connected with the other end of the middle-layer belt, and the other end of the lower-layer belt extends out of one end of the middle-layer belt to form a second connecting part. The zipper cloth tape has the advantages that the zipper cloth tape is applied to a zipper, so that a single zipper can also realize an expansion function, and the zipper cloth tape is favorable for reducing the implementation cost and widening the application range.

Description

Technical Field

[0001] The utility model relates to the technical field of zippers, and particularly relates to a zipper tape that can be stretched and expanded.

Background Art

[0002] With the continuous improvement of people's living standards, the demand for carrying items when going out is also increasing. In order to better meet the demand for carrying items, luggage, backpacks, handbags, etc. with an expansion function have emerged accordingly.

[0003] When the prior art realizes the expansion function, at least two zippers need to be provided, and an expansion tape is arranged between the two zipper tapes of at least one of the zippers. When in use, the zipper with the expansion tape can be opened for expansion; for example, a telescopic perimeter zipper and a double-layer telescopic perimeter zipper disclosed in a Chinese invention patent application with the application number CN202410623021.2, and a zipper tape that supports a hidden connection area disclosed in a Chinese utility model patent with the application number CN202322797893.4, both of which realize the expansion function by arranging an expansion tape between the two zipper tapes of the zipper. Because the existing expansion method requires multiple zippers to be set, the implementation cost is high, and the scope of use will be limited; therefore, in order to enable a single zipper to also realize the expansion function, thereby reducing costs and increasing the scope of use, there is an urgent need to provide a zipper tape that can realize expansion.

Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a zipper tape that can be stretched and expanded, through which a single zipper can also realize expansion.

[0005] The utility model is realized as follows: A zipper tape that can be stretched and expanded includes an upper layer tape, a middle layer tape, and a lower layer tape arranged in sequence from top to bottom. One end of the middle layer tape is flush with and connected to one end of the upper layer tape, and the other end of the upper layer tape extends beyond the other end of the middle layer tape to form a first connection part; one end of the lower layer tape is flush with and connected to the other end of the middle layer tape, and the other end of the lower layer tape extends beyond one end of the middle layer tape to form a second connection part.

[0006] Further, the first connection part is a connection part for connecting the teeth, and the second connection part is a connection part for connecting the fabric.

[0007] Further, the dimension of the first connection part along the width direction of the zipper tape is greater than the dimension of the teeth along the width direction of the zipper tape.

[0008] Further, the dimension of the second connection part along the width direction of the zipper tape is 5% - 40% of the dimension of the middle layer tape along the width direction of the zipper tape.

[0009] Further, the zipper fabric tape is formed by the interweaving of multiple warp systems and multiple weft systems to form the upper layer tape, the middle layer tape, and the lower layer tape that partially overlap and are connected to each other.

[0010] Further, the zipper fabric tape is formed by the interweaving of three warp systems and two weft systems to form the upper layer tape, the middle layer tape, and the lower layer tape that partially overlap and are connected to each other;

[0011] The three warp systems include an upper warp system, a middle warp system, and a lower warp system, and the two weft systems include a first weft system and a second weft system;

[0012] The upper warp system and the first weft system are interwoven to form the upper layer tape, the middle warp system and the second weft system are interwoven to form the middle layer tape, and the second weft system is interwoven with the lower warp system downward from the edge of the middle warp system to form the lower layer tape; the edges of the upper warp system and the middle warp system are interwoven and connected through the first weft system.

[0013] Further, the zipper fabric tape is formed by the interweaving of three warp systems and three weft systems to form the upper layer tape, the middle layer tape, and the lower layer tape that partially overlap and are connected to each other;

[0014] The three warp systems include an upper warp system, a middle warp system, and a lower warp system, and the three weft systems include a first weft system, a second weft system, and a third weft system;

[0015] The upper warp system and the first weft system are interwoven to form the upper layer tape, the middle warp system and the second weft system are interwoven to form the middle layer tape, and the lower warp system and the third weft system are interwoven to form the lower layer tape; the edges of the upper warp system and one side of the middle warp system are interwoven and connected through the first weft system, and the edges of the other side of the middle warp system and the lower warp system are interwoven and connected through the second weft system.

[0016] Further, the upper layer tape, the middle layer tape, and the lower layer tape all adopt a plain weave structure.

[0017] Further, the upper warp system includes 80 warp threads, the middle warp system includes 56 warp threads, and the lower warp system includes 74 warp threads.

[0018] By adopting the technical solution of the present utility model, it has at least the following beneficial effects: By designing that the zipper tape includes an upper layer tape, a middle layer tape and a lower layer tape which are arranged in sequence from top to bottom, and making one end of the middle layer tape flush with and connected to one end of the upper layer tape, the other end of the upper layer tape extends beyond the other end of the middle layer tape to form a first connection part, one end of the lower layer tape is flush with and connected to the other end of the middle layer tape, and the other end of the lower layer tape extends beyond one end of the middle layer tape to form a second connection part; when in specific use, when expansion is not required, the upper layer tape, the middle layer tape and the lower layer tape can be stacked together to form a structure similar to an "N" shape, and when expansion is required, only an external force needs to be applied to the zipper tape along the width direction, and the upper layer tape, the middle layer tape and the lower layer tape can be stretched and unfolded into a "one" shape structure. Therefore, by applying this zipper tape to a zipper, a single zipper can also achieve the expansion function, which helps to reduce the implementation cost and increase the scope of use.

Description of the Drawings

[0019] The following further describes the present utility model with reference to the accompanying drawings in conjunction with embodiments.

[0020] Figure 1 It is a state diagram of the zipper tape of the present utility model when not unfolded;

[0021] Figure 2 It is a state diagram of the zipper tape of the present utility model when unfolded;

[0022] Figure 3 It is a schematic structural diagram of the warp system and the weft system intertwined in the first specific embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the warp system and the weft system intertwined in the second specific embodiment of the present utility model;

[0024] Figure 5 It is a state diagram of the zipper adopting the zipper tape of the present utility model when not expanded;

[0025] Figure 6 It is a state diagram of the zipper adopting the zipper tape of the present utility model when expanded.

[0026] Explanation of the reference numerals in the drawings:

[0027] Zipper tape 100;

[0028] Zipper 200;

[0029] Chain teeth 300;

[0030] Slider 400;

[0031] Upper layer tape 1, first connection part 11;

[0032] Middle layer belt 2;

[0033] Lower layer belt 3, second connecting part 31;

[0034] Upper layer warp system 41, middle layer warp system 42, lower layer warp system 43, warp 441;

[0035] First weft system 51, second weft system 52.

Specific implementation manner

[0036] In order to better understand the technical solution of the present utility model, the technical solution of the present utility model will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0037] It should be noted here that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing these implementation manners and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0038] Please refer to Figures 1 to 6 As shown, a stretchable and expandable zipper cloth tape 100 of the present utility model, the zipper cloth tape 100 includes an upper layer belt 1, a middle layer belt 2 and a lower layer belt 3 which are arranged in sequence from top to bottom. One end of the middle layer belt 2 is flush with and connected to one end of the upper layer belt 1. The other end of the upper layer belt 1 extends beyond the other end of the middle layer belt 2 and forms a first connecting part 11 for connecting with the teeth or fabric; one end of the lower layer belt 3 is flush with and connected to the other end of the middle layer belt 2. The other end of the lower layer belt 3 extends beyond one end of the middle layer belt 2 and forms a second connecting part 31 for connecting with the fabric or teeth.

[0039] In the present utility model, the zipper tape 100 is designed to include an upper layer tape 1, a middle layer tape 2, and a lower layer tape 3 arranged in sequence from top to bottom. One end of the middle layer tape 2 is flush with and connected to one end of the upper layer tape 1. The other end of the upper layer tape 1 extends beyond the other end of the middle layer tape 2 to form a first connection portion 11. One end of the lower layer tape 3 is flush with and connected to the other end of the middle layer tape 2. The other end of the lower layer tape 3 extends beyond one end of the middle layer tape 2 to form a second connection portion 31. When in specific use, when no expansion is required, the upper layer tape 1, the middle layer tape 2, and the lower layer tape 3 can be stacked together to form a structure similar to an "N" shape. When expansion is needed, only an external force is applied to the zipper tape 100 along the width direction, and the upper layer tape 1, the middle layer tape 2, and the lower layer tape 3 can be stretched and unfolded into a "one" shape structure. Therefore, by applying this zipper tape 100 to a zipper, a single zipper can also achieve the expansion function, which helps to reduce the implementation cost and increase the scope of use.

[0040] In some embodiments of the present utility model, the first connection portion 11 is a connection portion for connecting the teeth, and the second connection portion 31 is a connection portion for connecting the fabric. By using the first connection portion 11 of the upper layer tape 1 as the connection portion for connecting the teeth and the second connection portion 31 of the lower layer tape 3 as the connection portion for connecting the fabric, after sewing the second connection portion 31 on the lower surface of the fabric, the upper surface of the upper layer tape 1 can be flush with the upper surface of the fabric or the height difference between the two is small, thus ensuring aesthetics. Of course, the present utility model is not limited to this. In specific implementation, the first connection portion 11 of the upper layer tape 1 can also be used as the connection portion for connecting the fabric, and the second connection portion 31 of the lower layer tape 3 can be used as the connection portion for connecting the teeth.

[0041] Furthermore, in order to better install the teeth and ensure that the teeth do not affect the stretching and unfolding of the zipper tape 100, the dimension of the first connection portion 11 along the width direction of the zipper tape 100 is greater than the dimension of the teeth along the width direction of the zipper tape 100.

[0042] Furthermore, in order to conveniently connect the second connection portion 31 to the fabric reliably, the dimension of the second connection portion 31 along the width direction of the zipper tape 100 is 5% - 40% of the dimension of the middle layer tape 2 along the width direction of the zipper tape 100. Preferably, the dimension of the second connection portion 31 along the width direction of the zipper tape 100 is 15% - 30% of the dimension of the middle layer tape 2 along the width direction of the zipper tape 100.

[0043] In some embodiments of the present utility model, in order to better form a multi-layer fabric, the zipper tape 100 is formed by interweaving a plurality of warp systems and a plurality of weft systems to form the upper layer tape 1, the middle layer tape 2, and the lower layer tape 3 that partially overlap and are connected.

[0044] Please refer to Figure 3 As shown, as the first specific embodiment of the present utility model, the zipper cloth tape 100 is formed by the interweaving of three warp systems and two weft systems to form the upper layer tape 1, the middle layer tape 2, and the lower layer tape 3 that are partially overlapped and connected;

[0045] The three warp systems include an upper warp system 41, a middle warp system 42, and a lower warp system 43, and the two weft systems include a first weft system 51 and a second weft system 52; wherein, the upper warp system 41, the middle warp system 42, and the lower warp system 43 each include a plurality of warp threads 441 arranged;

[0046] The upper warp system 41 and the first weft system 51 are interwoven to form the upper layer tape 1, the middle warp system 42 and the second weft system 52 are interwoven to form the middle layer tape 2, and the second weft system 52 is interwoven with the lower warp system 43 from the edge of the middle warp system 42 to form the lower layer tape 3, that is, the warp threads 441 at the edge of the middle warp system 42 and the warp threads 441 at the edge of the lower warp system 43 are interwoven and connected together by the second weft system 52 and used as a turning point. In this way, it can not only connect the middle layer tape 2 and the lower layer tape 3 together, but also realize folding at the position of this turning point, so that when no expansion is needed, the middle layer tape 2 can be stacked above the lower layer tape 3, and when expansion is needed, it can be stretched and unfolded;

[0047] The edge of the upper warp system 41 and the edge of the middle warp system 42 are interwoven and connected by the first weft system 51, that is, the warp threads 441 at the edge of the upper warp system 41 and the warp threads 441 at the edge of the middle warp system 42 are interwoven and connected together by the first weft system 51 and used as another turning point. In this way, it can not only connect the upper layer tape 1 and the middle layer tape 2 together, but also realize folding at the position of this other turning point, so that when no expansion is needed, the upper layer tape 1 can be stacked above the middle layer tape 2, and when expansion is needed, it can be stretched and unfolded so that the upper layer tape 1, the middle layer tape 2, and the lower layer tape 3 are in a straight state. It should be noted that: the first weft system 51 only interweaves and connects with the warp threads 441 at the edge of the middle warp system 42, and does not interweave with other warp threads 441 of the middle warp system 42.

[0048] The utility model forms the upper layer belt 1 by interweaving the first weft system 51 with the upper layer warp system 41, and uses the first weft system 51 to interweave and connect the edge of the upper layer warp system 41 with the edge of the middle layer warp system 42. At the same time, the second weft system 52 is interwoven with the middle layer warp system 42 to form the middle layer belt 2, and the second weft system 52 continues to be interwoven with the lower layer warp system 43 downward to form the lower layer belt 3, so that the upper layer belt 1, the middle layer belt 2 and the lower layer belt 3 can be reliably connected together, ensuring that the whole zipper tape 100 has strong tensile resistance, thus being suitable for various different use environments and better meeting the customer requirements. At the same time, the final zipper tape 100 also has better softness.

[0049] Please refer to Figure 4 As shown, as the second specific embodiment of the utility model, the zipper tape 100 is formed by interweaving three warp systems and three weft systems to form the upper layer belt 1, the middle layer belt 2 and the lower layer belt 3 which are partially overlapped and connected respectively; wherein, the upper layer warp system 41, the middle layer warp system 42 and the lower layer warp system 43 each include a plurality of warp threads 441 arranged.

[0050] The three warp systems include the upper layer warp system 41, the middle layer warp system 42 and the lower layer warp system 43, and the three weft systems include the first weft system 51, the second weft system 52 and the third weft system 53;

[0051] The upper warp system 41 and the first weft system 51 are interwoven to form the upper belt 1, the middle warp system 42 and the second weft system 52 are interwoven to form the middle belt 2, and the lower warp system 43 and the third weft system 53 are interwoven to form the lower belt 3; the edge of the upper warp system 41 and the edge of one side of the middle warp system 42 are interwoven and connected through the first weft system 51, that is, the warp 441 at the edge of the upper warp system 41 and the warp 441 at the edge of the middle warp system 42 are interwoven and connected together through the first weft system 51 and used as a turning point; the edge of the other side of the middle warp system 42 and the edge of the lower warp system 43 are interwoven and connected through the second weft system 52, that is, the warp 441 at the edge of the other side of the middle warp system 42 and the warp 441 at the edge of the lower warp system 43 are interwoven and connected together through the second weft system 52 and used as another turning point, so that when no expansion is needed, the upper belt 1 can be stacked above the middle belt 2, and when expansion is needed, it can be stretched and unfolded so that the upper belt 1, the middle belt 2 and the lower belt 3 are in a flat state. It should be noted that: the first weft system 51 is only interwoven and connected with the warp 441 at the edge of the middle warp system 42, and is not interwoven and connected with other warps 441 of the middle warp system 42; similarly, the second weft system 52 is only interwoven and connected with the warp 441 at the edge of the lower warp system 43, and is not interwoven and connected with other warps 441 of the lower warp system 43. Through the second specific embodiment of the present invention, it can also ensure that the entire zipper tape 100 has strong tensile resistance, so that it can be suitable for various different use environments and better meet the customer's needs. However, the softness of the finally manufactured zipper tape 100 will be worse than that of the first specific embodiment, but it can fully meet the use requirements of some occasions.

[0052] Furthermore, the upper belt 1, the middle belt 2 and the lower belt 3 all adopt a plain weave structure. Since the zipper tape 100 of the present invention is a multi-layer fabric, if a complicated pattern structure is adopted, abnormalities are likely to occur, such as defective products such as the upper belt 1 and the lower belt 3 being miswoven; therefore, the present invention is designed so that the upper belt 1, the middle belt 2 and the lower belt 3 all adopt a plain weave structure, which has better stability and is more convenient to manufacture.

[0053] As a specific embodiment of the present invention, the upper warp system 41 includes 80 warps 441, the middle warp system 42 includes 56 warps 441, and the lower warp system 43 includes 74 warps 441. Of course, the above is only a specific embodiment of the present invention, but the present invention is not limited to this. The specific number of warps of the upper warp system 41, the middle warp system 42 and the lower warp system 43 can be completely adjusted according to the specific width requirements of the zipper tape 100.

[0054] When the zipper tape 100 of the present utility model is specifically applied, it can be designed that a pair of zipper tapes of the zipper 200 are both the zipper tape 100 of the present utility model, and the first connecting parts 11 of the pair of zipper tapes 100 are arranged facing each other. A row of teeth 300 is installed on the edges of the two first connecting parts 11 facing each other. At the same time, a slider 400 capable of separating or closing the two rows of teeth 300 is installed on the teeth 300; as Figure 6 shown, in this way, when it is necessary to use the zipper 200 to achieve expansion, only an external force needs to be applied to both sides of the zipper 200, and the upper layer tape 1, the middle layer tape 2 and the lower layer tape 3 of the pair of zipper tapes 100 can be stretched and unfolded to form a "one" - shaped structure, so as to achieve the expansion function; as Figure 5 shown, when expansion is not required, the upper layer tape 1, the middle layer tape 2 and the lower layer tape 3 of the pair of zipper tapes 100 can be stacked together to form a structure similar to an "N" - shaped structure.

[0055] Although the specific embodiments of the present utility model have been described above, those skilled in the art of this technology should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present utility model. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present utility model should be covered by the scope protected by the claims of the present utility model.

Claims

1. An extendable and expandable zipper tape, characterized in that: It includes an upper belt, a middle belt, and a lower belt arranged successively from top to bottom. One end of the middle belt is flush with and connected to one end of the upper belt. The other end of the upper belt extends beyond the other end of the middle belt and forms a first connecting portion. One end of the lower belt is flush with and connected to the other end of the middle belt. The other end of the lower belt extends beyond one end of the middle belt and forms a second connecting portion.

2. The stretchable and expandable zipper tape according to claim 1, wherein: The first connecting portion is a connecting portion for connecting the teeth, and the second connecting portion is a connecting portion for connecting the fabric.

3. The stretchable and expandable zipper tape according to claim 2, wherein: The dimension of the first connecting portion along the width direction of the zipper tape is larger than the dimension of the teeth along the width direction of the zipper tape.

4. The stretchable and expandable zipper tape according to claim 2, characterized in that: The dimension of the second connecting portion along the width direction of the zipper tape is 5% - 40% of the dimension of the middle belt along the width direction of the zipper tape.

5. A stretchable and expandable zipper tape according to any one of claims 1-4, characterized in that: The zipper tape is formed by the interweaving of multiple warp systems and multiple weft systems to form the upper belt, middle belt, and lower belt that partially overlap and are connected.

6. A stretchable and expandable zipper tape as claimed in claim 5, wherein: The zipper tape is formed by the interweaving of three warp systems and two weft systems to form the upper belt, middle belt, and lower belt that partially overlap and are connected. The three warp systems include an upper warp system, a middle warp system, and a lower warp system. The two weft systems include a first weft system and a second weft system. The upper warp system and the first weft system are interwoven to form the upper belt. The middle warp system and the second weft system are interwoven to form the middle belt. And the second weft system is interwoven with the lower warp system downward from the edge of the middle warp system to form the lower belt. The edges of the upper warp system and the middle warp system are interwoven and connected through the first weft system.

7. The stretchable and expandable zipper tape according to claim 5, wherein: The zipper tape is formed by the interweaving of three warp systems and three weft systems to form the upper belt, middle belt, and lower belt that partially overlap and are connected. The three warp systems include an upper warp system, a middle warp system, and a lower warp system. The three weft systems include a first weft system, a second weft system, and a third weft system. The upper warp system and the first weft system are interwoven to form the upper belt. The middle warp system and the second weft system are interwoven to form the middle belt. The lower warp system and the third weft system are interwoven to form the lower belt. The edge of the upper warp system and the edge of one side of the middle warp system are interwoven and connected through the first weft system. The edge of the other side of the middle warp system and the edge of the lower warp system are interwoven and connected through the second weft system.

8. A stretchable and expandable zipper tape as claimed in claim 6 or 7, characterized in that: The upper belt, middle belt, and lower belt all adopt a plain weave structure.

9. The stretchable and expandable zipper tape according to claim 6 or 7, characterized in that: The upper warp system includes 80 warp threads, the middle warp system includes 56 warp threads, and the lower warp system includes 74 warp threads.

Images