Adhesive film applying three-layer reinforcing band

Abstract

The utility model relates to the technical field of adhesive films, and discloses an adhesive film applying a three-layer reinforced reinforcing band, which comprises a protective layer, a PTU layer is arranged at the bottom of the protective layer, a glue layer is arranged at the bottom of the PTU layer, transverse fibers and longitudinal fibers are arranged in the PTU layer, and the transverse fibers and the longitudinal fibers are distributed in the PTU layer in a staggered manner. According to the adhesive film applying the three-layer reinforcing band, the transverse fibers and the longitudinal fibers are arranged in the PTU layer and distributed in the PTU layer in a staggered mode to form a net structure, the tearing resistance and tensile strength of the whole adhesive film are improved, stress can be dispersed, the tearing resistance is improved, interlayer cracking caused by local stress concentration is avoided, and the service life of the adhesive film is prolonged. The problems of insufficient mechanical properties, weak interlayer bonding, low fiber utilization rate, poor high-temperature stability and the like of a traditional adhesive film are solved.

Description

Technical Field

[0001] This utility model relates to the field of adhesive film technology, specifically to an adhesive film using a three-layer reinforced tape. Background Technology

[0002] With the increasing demand for high-performance adhesive films in the apparel industry, traditional multilayer adhesive films (such as protective layer-PTU layer-adhesive layer structure) are gradually revealing the following technical bottlenecks in terms of mechanical properties, functional integration, and environmental adaptability:

[0003] Conventional adhesive films (such as single TPU or ordinary composite materials) suffer from limitations in their material systems, making it difficult to meet the tear resistance and tensile strength requirements of extreme working conditions. For example, under dynamic loads or high stress environments, the adhesive film is prone to localized tearing due to stress concentration, leading to overall failure. While existing technologies have attempted to improve strength by adding inorganic fillers (such as nano-ceramics) or thickening the matrix, this often leads to material embrittlement or decreased flexibility, making it difficult to balance strength and ductility. Utility Model Content

[0004] The purpose of this invention is to provide a three-layer reinforced adhesive film to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a three-layer reinforced adhesive film, including a protective layer, a PTU layer at the bottom of the protective layer, an adhesive layer at the bottom of the PTU layer, and transverse and longitudinal fibers inside the PTU layer, the transverse and longitudinal fibers being interleaved within the PTU layer.

[0006] As a further improvement of this utility model, there are several transverse and longitudinal fiber filaments, and these several transverse and longitudinal fiber filaments are evenly distributed in the PTU layer.

[0007] As a further improvement of this utility model, the PTU layer has a connecting channel that connects the bottom of the protective layer and the top of the adhesive layer.

[0008] As a further improvement of this utility model, a circular groove is provided at the top of the connecting channel, and the diameter of the circular groove is larger than the diameter of the connecting channel.

[0009] As a further improvement of this utility model, barb grooves are provided on both sides of the inner cavity of the connecting channel, and there are several barb grooves.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This application uses a three-layer reinforced adhesive film. The PTU layer contains transverse and longitudinal fibers, which are interwoven to form a mesh structure. This improves the overall tear resistance and tensile strength of the adhesive film, disperses stress and enhances tear resistance, and avoids interlayer cracking caused by local stress concentration. It solves the problems of insufficient mechanical properties, weak interlayer bonding, low fiber utilization and poor high-temperature stability of traditional adhesive films.

[0012] 2. This application features a three-layer reinforced adhesive film. The PTU layer has connecting channels that connect the protective layer and the adhesive layer, facilitating the injection of the adhesive layer into the connecting channels. This improves the bonding strength between the adhesive layer and the PTU layer and the protective layer, making the garment fabric more robust. This connection method replaces sewing at the seams of garments and can be used in sportswear, jackets, suits, and blazers. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention using a three-layer reinforced adhesive film;

[0015] Figure 2 This is an overall cross-sectional view of a three-layer reinforced adhesive film according to the present invention;

[0016] Figure 3 This is a top view of a PTU layer using a three-layer reinforcing adhesive film according to the present invention.

[0017] In the diagram: 1. Protective layer; 2. PTU layer; 3. Adhesive layer; 4. Connecting channel; 5. Circular groove; 6. Barbed groove; 7. Transverse fiber filament; 8. Longitudinal fiber filament. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3This utility model provides a three-layer reinforced adhesive film, including a protective layer 1, a PTU layer 2 at the bottom of the protective layer 1, an adhesive layer 3 at the bottom of the PTU layer 2, and transverse fibers 7 and longitudinal fibers 8 inside the PTU layer 2, which are interleaved within the PTU layer 2.

[0020] The PTU layer 2 contains transverse fibers 7 and longitudinal fibers 8, which are interwoven to form a mesh structure. This improves the overall tear resistance and tensile strength of the film, disperses stress and enhances tear resistance, and avoids interlayer cracking caused by local stress concentration. It solves the problems of insufficient mechanical properties, weak interlayer bonding, low fiber utilization and poor high-temperature stability of traditional films.

[0021] The transverse fiber 7 and longitudinal fiber 8 are each provided in multiples, and these multiple transverse fiber 7 and longitudinal fiber 8 are evenly distributed within the PTU layer 2. The provision of multiple transverse fiber 7 and longitudinal fiber 8 greatly improves the overall tear resistance and tensile strength of the adhesive film.

[0022] The PTU layer 2 has a connecting channel 4 that connects the bottom of the protective layer 1 and the top of the adhesive layer 3. This facilitates the injection of the adhesive layer 3 into the connecting channel 4, thereby improving the bonding strength between the adhesive layer 3 and both the PTU layer 2 and the protective layer 1.

[0023] A circular groove 5 is formed at the top of the connecting channel 4, and the diameter of the circular groove 5 is larger than the diameter of the connecting channel 4. By connecting the top of the PTU layer 2 to the protective layer 1 through the circular groove 5, the contact area between the adhesive layer 3 and the protective layer 1 is increased, thereby improving the interlayer bonding strength.

[0024] Both sides of the inner cavity of the connecting channel 4 are provided with barbed grooves 6, and there are several barbed grooves 6. By providing several barbed grooves 6 in the connecting channel 4, the connection strength between the PTU layer 2 and the protective layer 1 is improved.

[0025] Working principle: Place 1 and 2 together and stack them. Lay 3 at the bottom of 2. 3 enters from 4 into 5 and 6, connecting 1, 2 and 3 together. When in use, use a hot air blower to bond them together instead of sewing.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-layer reinforced adhesive tape film, comprising a protective layer (1), characterized in that, The protective layer (1) has a PTU layer (2) at the bottom, and an adhesive layer (3) at the bottom of the PTU layer (2). The interior of the PTU layer (2) has transverse fibers (7) and longitudinal fibers (8), which are interleaved within the PTU layer (2).

2. The application of a three-layer reinforced adhesive tape film according to claim 1, characterized in that, The transverse fiber filament (7) and longitudinal fiber filament (8) are provided in a plurality of units, and the plurality of transverse fiber filament (7) and longitudinal fiber filament (8) are evenly distributed in the PTU layer (2).

3. The application of a three-layer reinforced adhesive tape film according to claim 1, characterized in that, The PTU layer (2) has a connecting channel (4) that connects the bottom of the protective layer (1) and the top of the adhesive layer (3).

4. The application of a three-layer reinforced adhesive tape film according to claim 3, characterized in that, The top of the connecting channel (4) is provided with a circular groove (5), the diameter of which is greater than the diameter of the connecting channel (4).

5. The application of a three-layer reinforced adhesive tape film according to claim 3, characterized in that, The inner cavity of the connecting channel (4) is provided with barb grooves (6) on both sides, and there are several barb grooves (6).

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