Binding material of single-layer high-elasticity adhesive film

Abstract

The utility model relates to a bonding material of a single-layer high-elasticity adhesive film. A TPU (Thermoplastic Polyurethane) hot melt adhesive layer and an elastic fiber net layer are mixed to form a single-layer structure. The TPU hot melt adhesive film layer is obtained by modifying TPU hot melt adhesive, the melting point is reduced to 80-100 DEG C, the rebound rate is larger than or equal to 70%, the TPU hot melt adhesive film layer can be used in a composite mode, and good adhesion and elasticity can be provided. The TPU hot melt adhesive layer and the elastic fiber net layer are mixed to form a single-layer structure, a synergistic effect can be achieved, high elasticity, high peel strength and excellent aging resistance are achieved, the single-layer structure has high elasticity and high peel strength, and the layering problem of a traditional multi-layer film is solved.

Description

Technical Field

[0001] This utility model relates to the field of outdoor waterproof materials technology, specifically to an adhesive material for a single-layer high-elasticity adhesive film. Background Technology

[0002] When traditional sewing techniques meet modern materials science, seamless clothing technology is born. This revolutionary manufacturing process achieves seamless garment production through processes such as laser cutting and hot melt adhesive film bonding. However, behind this seemingly perfect technology lies a huge challenge in materials science and engineering.

[0003] The core of seamless garment manufacturing lies in "adhesive instead of seams." First, the fabric is precisely cut into garment pieces using a computer-controlled laser cutting machine. Then, a hot-melt adhesive film is applied to the seams. When the temperature reaches its melting point, the adhesive film physically or chemically bonds with the fabric fibers, ultimately forming a seamless structure through hot pressing or ultrasonic welding. This process not only eliminates the foreign feel of traditional seams but also enhances the garment's shaping effect through localized reinforcement.

[0004] The key bottleneck currently hindering the development of seamless clothing lies in the performance of the hot melt adhesive film. While existing TPU (thermoplastic polyurethane) films possess elasticity, they still exhibit the following problems in high-stress areas such as the waistband of athletic pants and the edges of bras: low interfacial bonding strength between the film and high-performance fibers like spandex and nylon, leading to delamination after repeated stretching. After multiple wear and washing cycles, the mechanical properties of the bonded areas significantly degrade, affecting the garment's lifespan. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adhesive material for a single-layer high-elasticity film. Through the synergistic effect of nano-level TPU hot melt adhesive and elastic fiber network, it achieves high elasticity, high peel strength and excellent aging resistance. The single-layer structure combines high elasticity and high peel strength, solving the delamination problem of traditional multilayer films.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] An adhesive material for a single-layer high-elasticity adhesive film includes a single-layer high-elasticity adhesive film layer, which is composed of a nano-scale TPU hot melt adhesive film layer and an elastic fiber mesh layer. The single-layer high-elasticity adhesive film layer is heated at high temperature, causing the TPU hot melt adhesive layer and the elastic fiber mesh layer to mix and form a single-layer structure. The TPU hot melt adhesive film layer is obtained by modifying TPU hot melt adhesive, lowering its melting point to 80-100℃, and achieving a resilience rate ≥70%, enabling composite use and providing good adhesion and elasticity. The single-layer structure formed by mixing the TPU hot melt adhesive layer and the elastic fiber mesh layer has a synergistic effect, achieving high elasticity, high peel strength, and excellent aging resistance. The single-layer structure combines high elasticity and high peel strength, solving the delamination problem of traditional multilayer films. The TPU hot melt adhesive is environmentally friendly, non-toxic, and harmless, meeting the requirements of green production. Nano-grade TPU hot melt adhesive is based on the molecular structure of thermoplastic polyurethane (TPU), exhibiting excellent elasticity to meet the high stretching requirements of seamless garments, such as sportswear and yoga pants, while maintaining the stability of the adhesive layer. Nano-grade TPU hot melt adhesive contains no plasticizers or solvents, meeting environmental standards. With a lower melting point of 80-100℃, it can be processed at low temperatures, reducing damage to heat-sensitive fabrics and lowering energy consumption.

[0008] Preferably, the elastic fiber web is vulcanized polyisoprene.

[0009] Preferably, the particle size range of the nano-scale TPU hot melt adhesive film layer is 50-200nm, and the melting point is 120-150℃.

[0010] Preferably, the elastic fiber web has a fiber diameter of 5-20 μm and a porosity of 30-60%.

[0011] Preferably, the total thickness of the single-layer high-elasticity adhesive film layer is 100-300μm, and the elongation at break is ≥800%.

[0012] Preferably, after being heated to a high temperature, the peel strength of the single-layer high-elasticity adhesive film layer is ≥6N / 25mm at 23℃ and ≥4N / 25mm at 85℃.

[0013] Preferably, the single-layer high-elasticity adhesive film layer further includes nanofillers dispersed in the TPU hot melt adhesive, wherein the nanofillers are at least one of alumina, silicon dioxide, or graphene.

[0014] Beneficial Effects: This utility model provides an adhesive material for a single-layer high-elasticity film, in which a TPU hot melt adhesive layer and an elastic fiber mesh layer are mixed to form a single-layer structure. The TPU hot melt adhesive film layer is obtained by modifying TPU hot melt adhesive, reducing its melting point to 80-100℃, and achieving a resilience rate ≥70%, enabling composite use and providing good adhesion and elasticity. The single-layer structure formed by mixing the TPU hot melt adhesive layer and the elastic fiber mesh layer has a synergistic effect, achieving high elasticity, high peel strength, and excellent aging resistance. The single-layer structure combines high elasticity and high peel strength, solving the delamination problem of traditional multilayer films. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an adhesive material for a single-layer high-elasticity adhesive film according to the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the adhesive material of the single-layer high-elasticity adhesive film of this utility model after high-temperature heating;

[0018] Explanation of reference numerals in the attached diagram: 1. Single-layer high-elasticity adhesive film layer; 11. Nanoscale TPU hot melt adhesive film layer; 12. Elastic fiber mesh layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, any equivalent structural or procedural transformations made using the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0022] like Figure 1 The adhesive material shown is a single-layer high-elasticity adhesive film, comprising a single-layer high-elasticity adhesive film layer 1, wherein the single-layer high-elasticity adhesive film layer 1 is composed of a nano-scale TPU hot melt adhesive film layer 11 and an elastic fiber mesh layer 12. After being heated to a high temperature, the single-layer high-elasticity adhesive film layer 1, as shown... Figure 2 As shown, the TPU hot melt adhesive layer 11 and the elastic fiber mesh layer 12 are mixed to form a single-layer structure. The nano-level TPU hot melt adhesive film layer 11 is obtained by modifying TPU hot melt adhesive, reducing its melting point to 80-100℃, and its resilience ≥70% allows for composite use, providing good adhesion and elasticity. The nano-level TPU hot melt adhesive layer 11 and the elastic fiber mesh layer 12 form a single-layer structure, which works synergistically to achieve high elasticity, high peel strength, and excellent aging resistance. The single-layer structure combines high elasticity and high peel strength, solving the delamination problem of traditional multilayer films. The nano-level TPU hot melt adhesive is environmentally friendly, non-toxic, and harmless, meeting the requirements of green production. Based on the molecular structure of thermoplastic polyurethane (TPU), the nano-level TPU hot melt adhesive has excellent elasticity, which can meet the high tensile requirements of seamless clothing, such as sportswear and yoga pants, while maintaining the stability of the adhesive layer. The nano-level TPU hot melt adhesive does not contain plasticizers or solvents, meeting environmental standards. Nano-grade TPU hot melt adhesive has a melting point reduced to 80-100℃, allowing for low-temperature processing, reducing damage to heat-sensitive fabrics, and lowering energy consumption. Example 2

[0023] like Figure 1 The adhesive material shown is a single-layer high-elasticity adhesive film, comprising a single-layer high-elasticity adhesive film layer 1, wherein the single-layer high-elasticity adhesive film layer 1 is composed of a nano-scale TPU hot melt adhesive film layer 11 and an elastic fiber mesh layer 12. After being heated to a high temperature, the single-layer high-elasticity adhesive film layer 1, as shown... Figure 2As shown, a nano-scale TPU hot melt adhesive layer 11 and an elastic fiber mesh layer 12 are mixed to form a single-layer structure. The nano-scale TPU hot melt adhesive film layer 11 is obtained by modifying nano-scale TPU hot melt adhesive, reducing its melting point to 80-100℃, and its resilience ≥70% allows for composite use, providing good adhesion and elasticity. The single-layer structure formed by mixing the nano-scale TPU hot melt adhesive layer and the elastic fiber mesh layer has a synergistic effect, achieving high elasticity, high peel strength, and excellent aging resistance. The single-layer structure combines high elasticity and high peel strength, solving the delamination problem of traditional multilayer films. The elastic fiber mesh layer 12 is vulcanized polyisoprene. The vulcanized polyisoprene can form a three-dimensional network structure, exhibiting excellent elasticity. Vulcanized polyisoprene has a wide operating temperature range and can maintain its three-dimensional network structure at 120℃. During the mixing process with the nano-scale TPU hot melt adhesive layer 11 at 100℃ to form a single-layer structure, the three-dimensional network structure is maintained. Example 3

[0024] like Figure 1 The adhesive material shown is a single-layer high-elasticity adhesive film, comprising a single-layer high-elasticity adhesive film layer 1, wherein the single-layer high-elasticity adhesive film layer 1 is composed of a nano-scale TPU hot melt adhesive film layer 11 and an elastic fiber mesh layer 12. After being heated to a high temperature, the single-layer high-elasticity adhesive film layer 1, as shown... Figure 2 As shown, a nano-scale TPU hot melt adhesive layer 11 is mixed with an elastic fiber mesh layer 12 to form a single-layer structure. The nano-scale TPU hot melt adhesive film layer 11 is obtained by modifying the nano-scale TPU hot melt adhesive, reducing its melting point to 80-100℃, and its resilience ≥70% for composite use, providing good adhesion and elasticity. The single-layer structure formed by mixing the nano-scale TPU hot melt adhesive layer and the elastic fiber mesh layer has a synergistic effect, achieving high elasticity, high peel strength, and excellent aging resistance. The single-layer structure combines high elasticity and high peel strength, solving the delamination problem of traditional multilayer films. The elastic fiber mesh layer is vulcanized polyisoprene. The vulcanized polyisoprene can form a three-dimensional network structure, has excellent elasticity, and a wide operating temperature range. It can maintain its three-dimensional network structure at 120℃, and maintains its three-dimensional network structure during the mixing process with the nano-scale TPU hot melt adhesive layer at 100℃ to form a single-layer structure. The nanoscale TPU hot melt adhesive film layer has a particle size range of 50-200 nm and a melting point of 120-150℃. The elastic fiber network layer has a fiber diameter of 5-20 μm and a porosity of 30-60%. The total thickness of the single-layer high-elasticity adhesive film layer is 100-300 μm, and the elongation at break is ≥800%. After high-temperature heating, the peel strength of the single-layer high-elasticity adhesive film layer is ≥6 N / 25 mm at 23℃ and ≥4 N / 25 mm at 85℃. The single-layer high-elasticity adhesive film layer also includes nanofillers dispersed in the TPU hot melt adhesive, wherein the nanofillers are at least one of alumina, silicon dioxide, or graphene.

[0025] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A single layer high elastic force adhesive material comprising a single layer high elastic force adhesive film layer, characterized by: The single-layer high-elasticity glue film layer is composed of a nano-scale TPU hot melt glue film layer and an elastic fiber web layer, and the single-layer high-elasticity glue film layer is heated at high temperature to mix the TPU hot melt glue layer and the elastic fiber web layer to form a single-layer structure.

2. The single layer high elastic force adhesive material of claim 1, wherein, The elastic fiber web layer is vulcanized polyisoprene.

3. The adhesive material of a single-layer high-elasticity adhesive film as described in claim 1, characterized in that: The particle size of the nano-scale TPU hot melt glue film layer ranges from 50 to 200 nm, and the melting point ranges from 120 to 150 DEG C.

4. The adhesive material of a single-layer high-elasticity adhesive film as described in claim 1, characterized in that: The fiber diameter of the elastic fiber web layer ranges from 5 to 20 microns, and the porosity ranges from 30 to 60%.

5. The adhesive material of a single-layer high-elasticity adhesive film as described in claim 1, characterized in that: The total thickness of the single-layer high-elasticity glue film layer ranges from 100 to 300 microns, and the elongation at break is greater than or equal to 800%.

6. The adhesive material of a single-layer high-elasticity adhesive film as described in claim 1 or 2, characterized in that: After the single-layer high-elasticity glue film layer is heated at high temperature, the peel strength is greater than or equal to 6 N / 25 mm at 23 DEG C and greater than or equal to 4 N / 25 mm at 85 DEG C.

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