High polymer material fitting back buckle

Abstract

The utility model discloses a high polymer material attaching back buckle, and relates to the technical field of textile parts, the high polymer material attaching back buckle comprises a buckle hook part and a buckle ring part, the buckle hook part comprises a TPU layer, a buckle hook fixed on the surface of the TPU layer, and surface layers fixedly arranged on the two surfaces of the TPU layer; the retaining ring part comprises a TPU layer, a retaining ring fixed on the surface of the TPU layer and used for being matched with the buckling hook, and surface layers fixedly arranged on the two surfaces of the TPU layer. The back buckle structure has the advantages that the back buckle structure can have higher strength and toughness so as to bear large pulling force and keep stability and reliability for a long time.

Description

Technical Field

[0001] The present application relates to the technical field of textile parts, and in particular to a back buckle made of a polymer material. Background Art

[0002] Traditional back buckles typically consist of two connected parts, secured by sewing with wire, mechanically attaching the buckle to clothing or other textiles. This method has been widely used in the manufacture of various clothing and accessories since ancient times. It is simple, easy to use, and low-cost. However, over time, it can easily wear out or loosen due to uneven force, leading to problems such as buckle detachment and fabric damage. With increasing consumer demand for product quality and growing environmental awareness, various improved back buckle designs have emerged in the market, such as using new connection methods such as hot melt adhesive bonding and ultrasonic welding to replace traditional sewing. These new technologies not only improve the durability and aesthetics of back buckles, but also reduce environmental pollution during the production process. Whether using traditional sewing or emerging methods such as hot melt adhesive bonding and ultrasonic welding, they all face the challenge of ensuring that the back buckle maintains good stability and reliability over long-term use. In particular, in sports equipment and outdoor products, back buckles often withstand high tensile forces, requiring sufficient strength and toughness. Utility Model Content

[0003] In order to make the back buckle structure have higher strength and toughness to withstand greater pulling force and maintain long-term stability and reliability, the present application provides a polymer material-bonded back buckle.

[0004] This application provides a polymer material bonded back buckle, which adopts the following technical solution:

[0005] A polymer material bonded back buckle, comprising a hook portion and a loop portion, wherein the hook portion comprises a TPU layer, a hook fixed on the surface of the TPU layer, and a surface layer fixedly arranged on both surfaces of the TPU layer;

[0006] The buckle portion includes a TPU layer, a buckle fixed on the surface of the TPU layer for cooperating with the buckle hook, and a surface layer fixed on both surfaces of the TPU layer.

[0007] By adopting the above technical solution, the TPU (thermoplastic polyurethane elastomer) layer is a polymer material layer with better elasticity and is not easy to deform. The TPU layer is used instead of the conventional base fabric, so that the hook and buckle parts have higher strength and toughness to withstand greater pulling force and maintain long-term stability and reliability. It also has better flatness, is lighter and thinner, has a high yield rate and is easy to produce.

[0008] Optionally, the buckle includes a first fixing portion, and the buckle includes a second fixing portion, and both the first fixing portion and the second fixing portion are fixed to the TPU layer by sewing thread.

[0009] By adopting the above technical solution, the hooks and buckles are fixed using traditional sewing technology and TPU layer.

[0010] Optionally, both surface layers are fixed via the first adhesive film and the TPU layer surface.

[0011] By adopting the above technical solution, the surface layer is fixed to the TPU layer in an adhesive manner.

[0012] Optionally, the buckle includes a first fixing portion, and the buckle includes a second fixing portion, and both the first fixing portion and the second fixing portion are fixed to the surface of the TPU layer via a second adhesive film.

[0013] By adopting the above technical solution, the buckle hook and buckle ring are fixed to the TPU layer by bonding, and there is no sewing on the whole. Compared with the traditional back buckle, the risk of needle breakage is avoided, and it has better resistance to deformation, better flatness, is lighter and thinner, has a high yield rate and is easy to produce.

[0014] Optionally, the TPU layer includes two TPU film layers, and the first fixing portion and the second fixing portion are both fixed to the facing surfaces of the two TPU film layers through a second adhesive film, and are clamped and fixed by the two TPU film layers.

[0015] By adopting the above technical solution, the buckle hook and the buckle ring are fixed to the TPU layer by bonding, and the TPU layer is set as two TPU film layers, which can have higher elasticity and further improve the deformation resistance; the buckle hook and the buckle ring are clamped and fixed by two TPU film layers, which can also further improve the stability of the buckle hook and the buckle ring.

[0016] Optionally, a third adhesive film is fixed on the surfaces of the two TPU film layers facing away from each other, and one end of the third adhesive film away from the TPU film layer is fixed to the surface layer.

[0017] By adopting the above technical solution, the surface layer is fixed to the TPU layer in an adhesive manner.

[0018] Optionally, a flexible extension portion is provided at one end of the buckle portion, a fixing portion is provided at one end of the extension portion away from the buckle portion, a first adhesive layer is provided on one surface of the extension portion, and a second adhesive layer detachably connected to the first adhesive layer is provided on one surface of the fixing portion.

[0019] By adopting the above technical solution, the extension part is bent, and the first adhesive layer can be fixed to the second adhesive layer. At this time, the distance from the end of the fixing part away from the extension part to the end of the buckle part away from the extension part is the first length; the extension part is flattened, and the first adhesive layer is not fixed to the second adhesive layer. At this time, the distance from the end of the fixing part away from the extension part to the end of the buckle part away from the extension part is the second length. The first length and the second length are not equal, which provides two optional lengths for the part where the buckle part of the back buckle structure is located, making the back buckle structure more applicable and having more tightness adjustment functions for the underwear using the back buckle structure.

[0020] Optionally, the TPU layer includes a protrusion at one end, the protrusion passes through the extension portion, the fixing portion includes a bottom film layer fixed to the protrusion, and the surface of the surface layer is fixed to the bottom film layer via a fifth adhesive film.

[0021] By adopting the above technical solution, the extension part achieves bendability through two flexible surface layers. By arranging the protrusion through the extension part, it is possible to maintain the bendability of the extension part while increasing the tensile strength and reliability of the extension part to a certain extent. The surface layer is fixed to the bottom film layer by bonding.

[0022] Optionally, the length of the second adhesive layer toward the buckle portion is greater than the length of the first adhesive layer along this direction.

[0023] By adopting the above technical solution, the first adhesive layer can be bonded to different positions of the second adhesive layer, thereby achieving adjustment of the above-mentioned first length, further improving the adjustable range and adaptability of the back buckle structure.

[0024] In summary, this application has at least one of the following beneficial effects:

[0025] 1. Using TPU layer instead of conventional base fabric makes the hook and loop parts have higher strength and toughness to withstand greater pulling force and maintain long-term stability and reliability. It also has better flatness, is lighter and thinner, has a high yield rate and is easy to produce.

[0026] 2. The hook and buckle are fixed to the TPU layer by bonding, without any sewing. Compared with traditional back buckles, this avoids the risk of needle breakage, has better resistance to deformation, better flatness, is thinner and lighter, has a high yield rate and is easy to produce;

[0027] 3. By providing the extension part and the fixing part, two optional lengths are provided for the portion where the buckle part of the back buckle structure is located, making the back buckle structure more adaptable and providing more flexible tightness adjustment functions for underwear using the back buckle structure;

[0028] 4. Adding a protrusion to the extension can maintain the bendability of the extension while increasing the tensile strength and reliability of the extension;

[0029] 5. The first adhesive layer can be bonded to different positions of the second adhesive layer, thereby achieving the adjustment of the above-mentioned first length, further improving the adjustable range and adaptability of the back buckle structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0031] Figure 2 This is a schematic diagram of the exploded structure of the buckle hook portion in Example 1 of the present application;

[0032] Figure 3 This is a schematic diagram of the exploded structure of the buckle portion in Example 1 of the present application;

[0033] Figure 4 This is a schematic diagram of the exploded structure of the buckle portion in Example 2 of the present application;

[0034] Figure 5 This is a schematic diagram of the exploded structure of the hook portion in Example 2 of the present application;

[0035] Figure 6 This is a schematic diagram showing the overall structure of the buckle portion, the extension portion, and the fixing portion in Example 3 of the present application;

[0036] Figure 7 It is a schematic diagram of the exploded structure showing the structure of the buckle part, extension part and fixing part in Example 3 of the present application.

[0037] Explanation of the accompanying reference numerals: 1. hook portion; 11. hook; 111. first fixing portion; 112. hook portion; 12. sewing thread; 13. first adhesive film; 14. second adhesive film; 2. buckle portion; 21. buckle; 211. second fixing portion; 212. ring portion; 22. third adhesive film; 3. extension portion; 31. first adhesive layer; 4. fixing portion; 41. bottom film layer; 42. second adhesive layer; 43. fourth adhesive film; 44. fifth adhesive film; 5. surface layer; 6. TPU layer; 61. TPU film layer; 62. protrusion. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-7 This application is described in further detail.

[0039] Example 1

[0040] The embodiment 1 of the present application discloses a polymer material fitting back buckle, that is, a fitting back buckle comprising a polymer material. The back buckle structure is a connecting structure, which is usually used in various clothing products, such as women's underwear. Figure 1The back fastening structure comprises a detachably connected hook portion 1 and a loop portion 2. The hook portion 1 and loop portion 2 are typically sewn to one end of the underwear, respectively, to achieve a detachable connection between the two ends. Specifically, the hook portion 1 is provided with a row of hooks 11, and the loop portion 2 is provided with multiple rows of loops 21. The hooks 11 can be connected to the loops 21 in one row in a one-to-one manner, thereby achieving a detachable connection between the hook portion 1 and the loop portion 2. The hooks 11 can be connected to loops 21 in different rows, thereby enabling the selection of underwear size specifications and adjusting the tightness.

[0041] Reference Figure 1 and Figure 2 The hook portion 1 includes a TPU layer 6. TPU (thermoplastic polyurethane) is a (AB)n-type linear block polymer, a polymer material composed of flexible soft segments and rigid hard segments. TPU's molecular chains are physically crosslinked by numerous hydrogen bonds, which strengthen its morphology and impart numerous excellent properties, including high strength, high toughness, wear resistance, oil resistance, chemical resistance, hydrolysis resistance, high and low temperature resistance, and mold resistance.

[0042] Reference Figure 1 and Figure 2 A row of buckle hooks 11 are fixed on one surface of the TPU layer 6. This application takes three buckle hooks 11 fixed on the TPU layer 6 as an example. In other embodiments of this application, the number and arrangement of the buckle hooks 11 can also be adjusted according to the design requirements. The buckle hook portion 1 includes a first fixing portion 111 and a hook portion 112. The first fixing portion 111 is fixed to the TPU layer 6 by sewing. A first adhesive film 13 is bonded and fixed on both sides of the TPU layer 6, wherein the first adhesive film 13 is provided with an opening for the hook portion 112 to pass through. The surface layer 5 is bonded and fixed on the surface of the first adhesive film 13 away from the TPU layer 6.

[0043] Similarly, refer to Figure 1 and Figure 3 The buckle portion 2 includes a TPU layer 6, and multiple rows of buckles 21 are fixed on one surface of the TPU layer 6. This application takes the TPU layer 6 as an example in which three rows of buckles 21 are provided, and each row includes three buckles 21. In other embodiments of the present application, the number and arrangement of the buckles 21 can be adjusted to other types. The buckle portion 2 includes a second fixing portion 211 and a ring portion 212. The second fixing portion 211 is fixed to the TPU layer 6 by sewing. The first adhesive film 13 is bonded and fixed on both sides of the TPU layer 6, and an opening is opened on one of the first adhesive films 13 for the ring portion 212 to pass through. The surface layer 5 is bonded and fixed on the surface of the first adhesive film 13 away from the TPU layer 6.

[0044] Since the TPU layer 6 is a polymer material layer, it has better elasticity and is not easy to deform. The TPU layer 6 is used instead of the conventional base cloth, so that the hook part 1 and the buckle part 2 have higher strength and toughness to withstand greater pulling force and maintain long-term stability and reliability. In addition, the flatness is better, the product is lighter and thinner, and the yield rate is high, which is convenient for production.

[0045] The implementation principle of the polymer material bonded back buckle in the embodiment of the present application is: by using the TPU layer 6 instead of the conventional base cloth, the hook part 1 and the buckle ring part 2 have higher strength and toughness to withstand greater pulling force and maintain long-term stability and reliability, and the flatness is better, it is lighter and thinner, and the yield rate is high and it is easy to produce.

[0046] Example 2

[0047] The difference between Example 2 and Example 1 of the present application lies in the different connection methods between the TPU layer 6 and the hook portion 1, and between the TPU layer 6 and the buckle portion 2.

[0048] Reference Figure 4 and Figure 5 The TPU layer 6 comprises two laminated and fixed TPU film layers 61. Multiple second adhesive films 14 are bonded and fixed to the facing surfaces of the two TPU film layers 61. The number of second adhesive films 14 matches the number of buckles 11 or rings 21. The first fixing portion 111 of the buckle 1 and the second fixing portion 211 of the ring 2 are both bonded and fixed to the second adhesive films 14. Specifically, the second fixing portion 211 is secured to the two TPU film layers 61 via the two second adhesive films 14, and the first fixing portion 111 is secured to the two TPU film layers 61 via the two second adhesive films 14. The first fixing portion 111 and the second fixing portion 211 are located between the two TPU film layers 61 and are clamped and fixed by the two TPU film layers 61.

[0049] The third adhesive film 22 is bonded to the facing surfaces of the two TPU film layers 61, and the surface layer 5 is bonded and fixed to the surface of the third adhesive film 22 away from the TPU film layer 61. The hook portion 1 has an opening through which the hook portion 112 passes, formed by the TPU film layer 61, the third adhesive film 22, and the surface layer 5. The loop portion 2 has an opening through which the loop portion 212 passes, formed by the TPU film layer 61, the third adhesive film 22, and the surface layer 5.

[0050] In this embodiment, the buckle hook 11 and the buckle ring 21 are fixed to the TPU layer 6 by bonding, and the TPU layer 6 is set as two TPU film layers 61, which can have higher elasticity and further improve the anti-deformation ability; the buckle hook 11 and the buckle ring 21 are clamped and fixed by the two TPU film layers 61, which can also further improve the stability of the buckle hook 11 and the buckle ring 21.

[0051] Example 3

[0052] The difference between the third embodiment of the present application and the first and second embodiments is that:

[0053] Reference Figure 6 and Figure 7 The back buckle structure also includes an extension portion 3 integrally formed at one end of the buckle portion 2, and a fixing portion 4 integrally formed at the end of the extension portion 3 away from the buckle portion 2. The fixing portion 4 is used to connect to the connecting end of the underwear. The extension portion 3 is a flexible structure, or a structure with a certain degree of elasticity. A first adhesive layer 31 is fixed to the surface of the extension portion 3, and a second adhesive layer 42 is fixed to the surface of the fixing portion 4. By bending the extension portion 3, the first adhesive layer 31 and the second adhesive layer 42 can be bonded and fixed. Specifically, the first adhesive layer 31 and the second adhesive layer 42 can be detachably connected using a Velcro structure. By providing the extension portion 3, the fixing portion 4, the first adhesive layer 31 and the second adhesive layer 42, the overall length of the back buckle structure provided with the buckle portion 2 can also be adjusted, further increasing the number of optional length adjustments of the back buckle structure and further improving the applicability of the back buckle structure.

[0054] When the extension portion 3 is flattened, the length of the second adhesive layer 42 from the fixing portion 4 to the buckle portion 2 is greater than the length of the first adhesive layer 31. This means that the first adhesive layer 31 can be bonded to different positions on the second adhesive layer 42, further increasing the number of length adjustments and the applicability of the back buckle structure.

[0055] Specifically, refer to Figure 6 and Figure 7 The fixing part 4 includes a bottom film layer 41, and the bottom film layer 41 can be a TPU layer 6 or a fabric layer. The TPU layer 6 includes a protrusion 62 at one end, and the protrusion 62 is strip-shaped. This embodiment takes two strips as an example. In the second embodiment, one of the TPU film layers 61 can include the protrusion 62, or both TPU film layers 61 include the protrusion 62. One end of the protrusion 62 is fixedly connected to the bottom film layer 41 through the fourth adhesive film 43. If the bottom film layer 41 is a TPU layer 6, the protrusion 62 can also be connected to the bottom film layer 41 as a whole. The surface layer 5 is fixed on both surfaces of the bottom film layer 41 through the fifth adhesive film 44. The surface layer 5 is also the surface layer 5 of the extension part 3 and the buckle part 2, thereby connecting the buckle part 2, the extension part 3 and the fixing part 4 into a whole. The first adhesive layer 31 and the second adhesive layer 42 are fixed on the surface of one of the surface layers 5.

[0056] The extension portion 3 is bendable through the two flexible surface layers 5 . By providing the protrusion 62 passing through the extension portion 3 , the extension portion 3 can maintain its bendability while increasing its tensile strength and reliability.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A polymer material bonded back buckle, comprising a buckle hook portion (1) and a buckle ring portion (2), characterized in that: The buckle hook portion (1) comprises a TPU layer (6), a buckle hook (11) fixed on the surface of the TPU layer (6), and a surface layer (5) fixedly arranged on both surfaces of the TPU layer (6); The buckle portion (2) comprises a TPU layer (6), a buckle (21) fixed on the surface of the TPU layer (6) for cooperating with the buckle hook (11), and a surface layer (5) fixedly arranged on both surfaces of the TPU layer (6).

2. The polymer material bonding back buckle according to claim 1, characterized in that: The buckle hook (11) includes a first fixing portion (111), and the buckle ring (21) includes a second fixing portion (211), and both the first fixing portion (111) and the second fixing portion (211) are fixed to the TPU layer (6) via sewing threads (12).

3. The polymer material bonding back buckle according to claim 2, characterized in that: Both surface layers (5) are fixed via the first adhesive film (13) and the surface of the TPU layer (6).

4. The polymer material laminating back buckle according to claim 1, characterized in that: The buckle (11) includes a first fixing portion (111), and the buckle (21) includes a second fixing portion (211), and both the first fixing portion (111) and the second fixing portion (211) are fixed to the surface of the TPU layer (6) via a second adhesive film (14).

5. The polymer material bonding back buckle according to claim 4, characterized in that: The TPU layer (6) comprises two TPU film layers (61), and the first fixing portion (111) and the second fixing portion (211) are both fixed to the facing surfaces of the two TPU film layers (61) through the second adhesive film (14), and are clamped and fixed by the two TPU film layers (61).

6. The polymer material bonding back buckle according to claim 5, characterized in that: A third adhesive film (22) is fixed on the surfaces of the two TPU film layers (61) facing away from each other, and one end of the third adhesive film (22) away from the TPU film layer (61) is fixed to the surface layer (5).

7. The polymer material bonding back buckle according to claim 1, characterized in that: A flexible extension portion (3) is provided at one end of the buckle portion (2), a fixing portion (4) is provided at one end of the extension portion (3) away from the buckle portion (2), a first adhesive layer (31) is provided on one surface of the extension portion (3), and a second adhesive layer (42) detachably connected to the first adhesive layer (31) is provided on one surface of the fixing portion (4).

8. The polymer material laminating back buckle according to claim 7, characterized in that: The TPU layer (6) includes a protruding portion (62) at one end, the protruding portion (62) passes through the extending portion (3), the fixing portion (4) includes a bottom film layer (41) fixed to the protruding portion (62), and the surface of the surface layer (5) is fixed to the bottom film layer (41) via a fifth adhesive film (44).

9. The polymer material bonding back buckle according to claim 7, characterized in that: The length of the second adhesive layer (42) in the direction toward the buckle portion (2) is greater than the length of the first adhesive layer (31) along this direction.

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