Hook structure, multilayer structure, and manufacturing method of hook structure

Abstract

The present invention provides a hook structure, a multilayer structure, and a method for manufacturing the hook structure. [Solution] A hook structure having a first extending direction and a second extending direction, comprising: a base layer; a support layer including a plurality of hook rows arranged at intervals along the first extending direction, each including a plurality of hook units arranged at intervals along the second extending direction and integrally molded and connected to one side of the base layer; and a covering layer covering the hook units of the support layer and a plurality of surface regions exposed on the one side of the base layer. This improves the structural stability and applicability of the hook structure.

Description

Technical Field

[0001] The present invention relates to a hook structure, a multilayer structure, and a method for manufacturing a hook structure, and particularly to an injection-molded hook structure, a multilayer structure, and a method for manufacturing a hook structure.

Background Art

[0002] In daily life, conventional fixing methods for fixing two objects include stitching or adhesion. When attempting to separate stitched or adhesively fixed objects, irreversible damage such as, for example, the thread holes remaining after stitching or damage to the adhesive surface due to separation of the adhesive occurs. Further, conventional fixing methods cannot accommodate the changing needs of multiple fixing and separation cycles.

[0003] In order to remove fixed objects as needed and reduce damage, a new generation of fixing methods, namely hook structure design, has been developed. Hook structures of corresponding shapes can be provided on two objects to be fixed, and the hook structures of corresponding shapes can be pressed against each other to form a fixed state, and can be removed when separation is required. However, after fixing and removing a conventional hook structure multiple times, deformation occurs, weakening the fixing effect.

[0004] In view of this, developing a hook structure that can easily fix objects and is easy to remove, while at the same time improving durability and structural stability, is a goal that the industry has been striving for.

Summary of the Invention

Means for Solving the Problems

[0005] An object of the present invention is to provide a hook structure, a multilayer structure, and a method for manufacturing a hook structure formed by injection molding that can simplify the manufacturing process and improve the structural stability of the hook structure.

[0006] One embodiment of the present invention is a hook structure having a first extending direction and a second extending direction, comprising a base layer, a support layer including a plurality of hook rows arranged at intervals along the first extending direction and each including a plurality of hook units arranged at intervals along the second extending direction and integrally molded and connected to one side of the base layer, and a covering layer covering the hook units of the support layer and a plurality of surface regions exposed on the one side of the base layer.

[0007] According to the hook structure described above, the hook rows may be arranged at equidistant intervals along the first extending direction.

[0008] According to the hook structure described above, the hook units of each hook row group may be arranged at equidistant intervals along the second extending direction.

[0009] According to the hook structure, the support layer may be made of an elastic material and may extend along at least one of the first and second extending directions.

[0010] According to the hook structure described above, the support layer may contain a first polymer material, and the coating layer may contain a second polymer material.

[0011] According to the hook structure, the first polymer material may be a thermoplastic polyurethane, a thermoplastic polystyrene elastomer, or a thermoplastic polyester elastomer.

[0012] Another embodiment of the present invention is a multilayer structure comprising the hook structure and a substrate provided on the other side of the base layer of the support layer.

[0013] According to the multilayer structure described above, the base material may be a woven fabric.

[0014] According to the multilayer structure described above, the substrate may be elastic and may extend along at least one of the first and second extending directions.

[0015] A further embodiment of the present invention is a method for manufacturing a hook structure, comprising the steps of: injection molding a first polymer material and a second polymer material to form a structural layer comprising a support layer containing the first polymer material and a coating layer containing the second polymer material; cutting the structural layer along a second extending direction to form a plurality of hook rows; and cutting the structural layer along a first extending direction to form a plurality of hook units to obtain a hook structure. [Brief explanation of the drawing]

[0016] To make the above and other objectives, features, advantages, and embodiments of the present invention clearer and easier to understand, the accompanying drawings are described below. [Figure 1] This is a schematic perspective view showing the hook structure of Example 1 according to one embodiment of the present invention. [Figure 2] This is a schematic cross-sectional view showing the hook structure of Embodiment 1 according to the embodiment of Figure 1. [Figure 3] This is a schematic cross-sectional view showing the hook structure of Example 2 according to one embodiment of the present invention. [Figure 4] This is a schematic cross-sectional view showing the hook structure of Example 3 according to one embodiment of the present invention. [Figure 5] This is a schematic cross-sectional view showing the hook structure of Example 4 according to one embodiment of the present invention. [Figure 6] This is a schematic perspective view showing a multilayer structure according to another embodiment of the present invention. [Figure 7] Figure 6 is another schematic perspective view showing the multilayer structure. [Figure 8] This is a flowchart showing a process for manufacturing a hook structure according to yet another embodiment of the present invention. [Modes for carrying out the invention]

[0017] Several embodiments of the present invention will be described below with reference to the accompanying drawings. For clarity, many practical details will be described in conjunction with the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. Also, in order to simplify the accompanying drawings, some well-known and commonly used structures and elements are shown simply and schematically in the accompanying drawings, and overlapping elements may be represented by the same number.

[0018] <Hook structure>

[0019] Please refer to Figures 1 and 2. Figure 1 shows a schematic perspective view of the hook structure 100 of Embodiment 1 according to one embodiment of the present invention, and Figure 2 shows a schematic cross-sectional view of the hook structure 100 of Embodiment 1 according to the embodiment of Figure 1. As can be seen from Figures 1 and 2, the hook structure 100 of Embodiment 1 has a first extending direction D1 and a second extending direction D2, and comprises a support layer 110 and a coating layer 120. The support layer 110 includes a base layer 111 and a plurality of hook row groups (not indicated). The hook row groups are arranged at intervals along the first extending direction D1 and each includes a plurality of hook units 113. The hook units 113 of each hook row group are arranged at intervals along the second extending direction D2 and are integrally molded and connected to one side of the base layer 111. The coating layer 120 covers the hook units 113 of the support layer 110 and a plurality of surface areas (not shown) exposed on the aforementioned one side of the base layer 111. This improves the structural integrity and strength of the hook structure 100, and the fact that the hook unit 113 is integrally molded and connected to the base layer 111 is advantageous for the structural stability of the hook structure 100.

[0020] Furthermore, the hook row groups may be arranged at equal intervals along the first extending direction D1. Also, the hook units 113 of each hook row group may be arranged at equal intervals along the second extending direction D2. Thereby, the load intensity when the hook structure 100 receives a force and the resistance to an external force can be improved, and the manufacturing process of the hook structure 100 can be simplified to improve production efficiency. As can be seen from FIG. 2, the hook unit 113 may be T-shaped, and the width of the end portion away from the base layer 111 is the maximum width of the hook unit 113.

[0021] Also, the support layer 110 may be made of an elastic material and may extend along at least one of the first extending direction D1 and the second extending direction D2. The support layer 110 may include a first polymer material, and the coating layer 120 may include a second polymer material. Thereby, the hook structure 100 may be applied to different surface morphologies, and the elastic support layer 110 can conform to the surface morphology of the object to which it is attached to improve the shape adaptability of the hook structure 100. Also, by adjusting the hardness difference between the first polymer material of the support layer 110 and the second polymer material of the coating layer 120, the hook structure 100 can have both elasticity and mechanical strength, which is advantageous for the durability of the hook structure 100. Furthermore, the first polymer material may be thermoplastic polyurethane (TPU), thermoplastic styrene (TPS), or thermoplastic polyester elastomer (TPEE). Thereby, the elongation rate and resilience of the hook structure 100 can be improved. Also, the second polymer material may be nylon, polyester, polyurethane, or polyolefin. Thereby, the friction resistance of the hook structure 100 can be improved.

[0022] Specifically, the support layer 110 may have toughness and may be regarded as the core skeleton of the hook structure 100, which can enhance the durability of the hook structure 100. Specifically, the hook unit 113 of the hook structure 100 has a symmetric T-shaped structure, which is advantageous for the uniform stress distribution of the hook structure 100 and the shape maintenance of the hook unit 113. In addition, due to the structural symmetry of the hook structure 100, the complexity of the mold production design can be reduced, contributing to the demolding efficiency and product yield.

[0023] In addition, the coating layer 120 is coated on the hook unit 113 of the support layer 110, corresponding to the shape of the hook unit 113, and the thickness of the coating layer 120 can be adjusted as needed. The coating layer 120 may be a protective layer for alleviating the surface friction damage after the long-term use of the hook structure 100, which is advantageous for extending the service life of the hook structure 100.

[0024] Please refer to Figure 3. This shows a schematic cross-sectional view of the hook structure 200 of Embodiment 2 according to one embodiment of the present invention. The hook structure 200 of Embodiment 2 comprises a support layer 210 and a covering layer 220. The support layer 210 includes a base layer 211 and a plurality of hook row groups (not indicated), and each hook row group includes a plurality of hook units 213. The structure of the hook structure 200 of Embodiment 2 is the same as that of the hook structure 100 of Embodiment 1, but the difference is that the shape of the hook unit 213 of the hook structure 200 and the hook unit 113 of the hook structure 100 are different. As can be seen from Figure 3, the width of the end of the hook unit 213 of the hook structure 200 adjacent to the base layer 211 is the maximum width of the hook unit 213, the width of the hook unit 213 gradually decreases in the direction away from the base layer 211, and the width of the end of the hook unit 213 away from the base layer 211 is the minimum width of the hook unit 213. The covering layer 220 covers the hook unit 213 in accordance with its shape and extends in an arc-shaped hook from the end of the hook unit 213 away from the base layer 211. This ensures that the force-receiving direction of the hook structure 200 is consistent, and applying this to the connection structure is advantageous for ease of disassembly, allowing the connection structure to be disassembled in a more labor-saving manner while maintaining structural stability.

[0025] Please refer to Figure 4. This shows a schematic cross-sectional view of a hook structure 300 of Embodiment 3 according to one embodiment of the present invention. The hook structure 300 of Embodiment 3 comprises a support layer 310 and a covering layer 320, the support layer 310 includes a base layer 311 and a plurality of hook row groups (not indicated), and each hook row group includes a plurality of hook units 313. The structure of the hook structure 300 of Embodiment 3 is the same as that of the hook structure 100 of Embodiment 1, but the difference is that the shape of the hook unit 313 of the hook structure 300 and the hook unit 113 of the hook structure 100 are different. As can be seen from Figure 4, the width of the end of the hook unit 313 of the hook structure 300 adjacent to the base layer 311 is the maximum width of the hook unit 313, the width at half the height of the hook unit 313 is the minimum width of the hook unit 313, and the end of the hook unit 313 away from the base layer 311 may be V-shaped and have two endpoints. The covering layer 320 covers the hook unit 313 in accordance with its shape and extends from the two endpoints of the hook unit 313 in a symmetrical double-arc hook shape, which is advantageous in that it increases the number of force-receiving points of the hook structure 300, thereby increasing the resistance of the hook structure 300 to external forces and improving the hook-up effect in the connection structure of the hook structure 300.

[0026] Please refer to Figure 5. This shows a schematic cross-sectional view of the hook structure 400 of Embodiment 4 according to one embodiment of the present invention. As can be seen from Figure 5, the hook structure 400 of Embodiment 4 comprises a support layer 410 and a covering layer 420. The support layer 410 includes a base layer 411 and a plurality of hook row groups (not indicated), and each hook row group includes a plurality of hook units 413. The structure of the hook structure 400 of Embodiment 4 is the same as that of the hook structure 100 of Embodiment 1, but the difference is that the shape of the covering layer 420 of the hook structure 400 and the covering layer 120 of the hook structure 100 are different. As can be seen from Figure 5, the hook unit 413 may be T-shaped, and the width of the end that separates from the base layer 411 is the maximum width of the hook unit 413 and has two endpoints. The covering layer 420 covers the hook unit 413 in accordance with its shape, and the covering layer 420 extends from the two endpoints of the hook unit 413 toward the base layer 411, forming two protrusions. This improves the mechanical strength of the hook structure 400, thereby increasing its resistance to external forces.

[0027] <Multilayer structure>

[0028] Please refer to Figures 6 and 7. Figure 6 shows a schematic perspective view of a multilayer structure 10 according to another embodiment of the present invention, and Figure 7 shows another schematic perspective view of the multilayer structure 10 of Figure 6. As can be seen from Figures 1, 6 and 7, another embodiment of the present invention is a multilayer structure 10 comprising the hook structure 100 and base material 11 of Figure 1, wherein the hook structure 100 comprises a support layer 110 and a coating layer 120, the support layer 110 includes a base layer 111 and a group of hook rows (not indicated), each group of hook rows includes a plurality of hook units 113, and the hook units 113 are integrally molded and connected to one side of the base layer 111, and the base material 11 is provided on the other side of the base layer 111 of the support layer 110. This combination of the hook structure 100 and the base material 11 is advantageous for the versatility of applications of the multilayer structure 10.

[0029] Furthermore, the base material 11 may be a woven fabric. The base material 11 may also be elastic and may extend along at least one of the first extending direction D1 and the second extending direction D2. This allows the multilayer structure 10 to have multi-directional ductility. Specifically, the woven fabric may be a shuttle woven fabric, a knitted fabric, or a nonwoven fabric. A woven fabric formed using an elastic material structure allows the base material 11 and the support layer 110 to extend in cooperation, increasing the degree of freedom in the extending direction of the multilayer structure 10. For example, a multilayer structure 10 having high elasticity and high ductility may be applied to bags or shoes, or even highly elastic sportswear. Furthermore, the multilayer structure 10 of the present invention is not limited to a combination of the hook structure 100 and the base material 11; the type of material or number of layers of the base material 11 can be adjusted as needed, but is not limited thereto.

[0030] <Manufacturing method for hook structure>

[0031] Please refer to Figure 8. This shows a process flowchart of a manufacturing method 20 for a hook structure according to yet another embodiment of the present invention. As can be seen from Figure 8, the manufacturing method 20 for a hook structure comprises steps 21, 22, and 23.

[0032] Step 21 is a step in which a structural layer is formed by injection molding a first polymer material and a second polymer material. The structural layer comprises a support layer and a coating layer, the support layer containing the first polymer material and the coating layer containing the second polymer material. Specifically, the second polymer material of the coating layer may be a material with low elasticity and high hardness, which contributes to improving the mechanical strength and abrasion resistance of the hook structure. Also, the first polymer material of the support layer may be an elastic material, so that the support layer has elasticity and ductility. Specifically, step 21 may be a dual-material injection molding step. Dual-material injection molding is a manufacturing technique in which two types of plastic are injected into a mold simultaneously. Such a technique makes it possible to produce complex parts with different colors, materials or properties in a single process. For example, the second polymer material in step 21 may be a rigid material such as polypropylene, and the first polymer material in step 21 may be an elastic material such as nylon, polyester, polyurethane or polyolefin, and the combination of rigid and elastic materials is advantageous for manufacturing a hook structure with design variability and functionality.

[0033] Step 22 is a step in which the structural layer is cut along the second extension direction to form multiple hook row groups. This allows for adjustment of the spacing between hook row groups and further increases the degree of freedom in using the hook structure.

[0034] Step 23 is a step in which the structural layer is cut along the first extension direction to form multiple hook units and obtain a hook structure. This allows for adjustment of the spacing between hook units and further improves the variability of the extension direction of the hook structure, which is advantageous for the applicability of the hook structure. In particular, a hook structure with multi-directional extension is used in response to the surface of an object with steps, and its extension contributes to the attachment of the hook structure to the surface of the object.

[0035] Based on the above, the hook structure of the present invention comprises a support layer and a coating layer, and the materials of the support layer and the coating layer may be the same or different. The manufacturing method of the hook structure of the present invention may include a dual-material injection molding process, in which the hook structure can be manufactured in a production process with low complexity, and the types of first polymer material of the support layer and second polymer material of the coating layer can be selected as necessary, thereby adjusting the mechanical strength, elasticity and ductility of the hook structure, contributing to improved reliability of use and variability of application of the hook structure.

[0036] Although the present invention is disclosed in embodiments as described above, these embodiments are not intended to limit the invention, and any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be based on the scope of the patent application to be appended later. [Explanation of Symbols]

[0037] 10:Multilayer structure 11: Base material 20: Method for manufacturing a hook structure 21, 22, 23: Process 100, 200, 300, 400: Hook structure 110, 210, 310, 410: Support layer 111, 211, 311, 411: Base layer 113, 213, 313, 413: Hook Unit 120, 220, 320, 420: Covering layer D1: First extension direction D2: Second extension direction

Claims

1. A hook structure having a first extending direction and a second extending direction, A support layer comprising a base layer and a plurality of hook units, each arranged at intervals along the second extending direction and integrally molded and connected to one side of the base layer, and a plurality of hook rows, each arranged at intervals along the first extending direction, A covering layer covering the plurality of hook units of the support layer and the plurality of surface regions exposed on one side of the base layer, A hook structure equipped with this feature.

2. The hook structure according to claim 1, wherein the plurality of hook rows are arranged at equidistant intervals along the first extending direction.

3. The hook structure according to claim 1, wherein the plurality of hook units of each of the plurality of hook row groups are arranged at equidistant intervals along the second extending direction.

4. The hook structure according to claim 1, wherein the support layer is made of an elastic material and extends along at least one of the first extending direction and the second extending direction.

5. The hook structure according to claim 1, wherein the support layer comprises a first polymer material and the coating layer comprises a second polymer material.

6. The hook structure according to claim 5, wherein the first polymer material is a thermoplastic polyurethane, a thermoplastic polystyrene elastomer, or a thermoplastic polyester elastomer.

7. The hook structure according to claim 1, A base material provided on the other side of the base layer of the support layer, A multi-layered structure equipped with [unclear] features.

8. The multilayer structure according to claim 7, wherein the base material is a woven fabric.

9. The multilayer structure according to claim 7, wherein the substrate is elastic and extends along at least one of the first and second extending directions.

10. A step of injection molding a first polymer material and a second polymer material to form a structural layer comprising a support layer containing the first polymer material and a coating layer containing the second polymer material, The process involves cutting the structural layer along the second extension direction to form a plurality of hook rows, The process involves cutting the structural layer along a first extending direction to form a plurality of hook units and obtain a hook structure. A method for manufacturing a hook structure equipped with a hook structure.

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