A three-layer double-sided adhesive

Abstract

This utility model relates to the field of new materials technology for clothing, specifically a three-layer double-sided adhesive, comprising a high-temperature TPU, a low-temperature TPU, and a glassine paper. A layer of low-temperature TPU is disposed on both the top and bottom of the high-temperature TPU, with the bottom layer of low-temperature TPU attached to the glassine paper. The thickness of the high-temperature TPU is 0.03mm–0.05mm, the thickness of the low-temperature TPU is 0.02mm–0.04mm, and the thickness of the glassine paper is 0.07mm–0.09mm. This utility model, through the combination of high and low-temperature TPU, allows for quick bonding to sportswear. It provides a certain level of support strength while facilitating bonding. Furthermore, the material is soft, resistant to washing at certain temperatures, and has a high softening temperature, making it particularly suitable for use in high-intensity sportswear.

Description

Technical Field

[0001] This utility model relates to the field of new materials technology for clothing, specifically a three-layer double-sided adhesive. Background Technology

[0002] With the rise of outdoor sports, various sportswear is constantly being updated and iterated to meet the different types of outdoor sports, the requirements of wearers, and the demands for comfort and aesthetics.

[0003] Because sportswear needs to fully consider the fit of its fabric against the skin, wearing comfort, and functions such as breathability and sweat absorption, it cannot be connected using fabric joints or seams that could irritate the skin. Therefore, it needs to be connected using heat-pressed adhesive strips. However, the heat-pressing method used in current technology cannot guarantee both the quality and efficiency of heat pressing, and the strength of the heat-pressed adhesive strip is insufficient. It is prone to wrinkling or uneven heat pressing on the fabric, thus affecting the wearing comfort and aesthetics.

[0004] Based on the above reasons, this utility model designs a three-layer double-sided adhesive. By adjusting the materials, dimensions, and physical parameters of each layer of the double-sided adhesive, it not only meets the requirements for splicing sportswear, but also makes it easier to perform hot pressing operations and improves the quality of the spliced ​​pieces. The spliced ​​pieces have better strength and flatness, and are softer to the touch. They also have higher water resistance, are lightweight, and are more skin-friendly. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a three-layer double-sided adhesive. By adjusting the materials, dimensions, and physical parameters of each layer of the double-sided adhesive, it not only meets the requirements for splicing sportswear, but also makes it easier to perform hot pressing operations and improves the quality of the spliced ​​pieces. The spliced ​​pieces have better strength and flatness, and are softer to the touch. They also have higher water resistance, are lightweight, and are more skin-friendly.

[0006] To achieve the above objectives, this utility model provides a three-layer double-sided adhesive, comprising a high-temperature TPU, a low-temperature TPU, and a glassine paper. A layer of low-temperature TPU is disposed on the top and bottom of the high-temperature TPU, wherein the bottom layer of low-temperature TPU is attached to the glassine paper. The thickness of the high-temperature TPU is 0.03mm to 0.05mm, the thickness of the low-temperature TPU is 0.02mm to 0.04mm, and the thickness of the glassine paper is 0.07mm to 0.09mm.

[0007] The width of the double-sided tape strips should be ≥4mm.

[0008] The weight of the double-sided tape is 120 GSM to 160 GSM.

[0009] Compared with existing technologies, this invention employs a three-layer combination of high-temperature TPU and low-temperature TPU. The high-temperature TPU, with its heat resistance, is placed in the middle layer for support, while the low-temperature TPU, with its easier melting properties, is placed on both sides, allowing for more efficient bonding with clothing fabrics. Furthermore, due to the properties of the high-temperature TPU used, this invention can control the modulus between 1.2 N / cm and 1.9 N / cm, achieve a tensile recovery rate exceeding 96.4%, and withstand washing at temperatures above 60°C, with a softening point close to 93°C. The product has a soft feel and provides greater support, making it suitable for use in sportswear requiring frequent and intense activity. Attached Figure Description

[0010] Figure 1 This is a schematic cross-sectional view of the structure of this utility model.

[0011] Explanation of reference numerals in the attached figures:

[0012] 1. High-temperature TPU, 2. Low-temperature TPU, 3. Glassine paper. Detailed Implementation

[0013] The present invention will now be further described with reference to the accompanying drawings.

[0014] See Figure 1 This utility model provides a three-layer double-sided adhesive, including a high-temperature TPU1, a low-temperature TPU2, and a glassine paper 3. A layer of low-temperature TPU2 is disposed on the top and bottom of the high-temperature TPU1, wherein the bottom layer of low-temperature TPU2 is attached to the glassine paper 3. The thickness of the high-temperature TPU1 is 0.03mm to 0.05mm, the thickness of the low-temperature TPU2 is 0.02mm to 0.04mm, and the thickness of the glassine paper 3 is 0.07mm to 0.09mm.

[0015] The width of the strips cut from double-sided tape 2 is ≥4mm.

[0016] The weight of double-sided tape 2 is 120 GSM to 160 GSM.

[0017] Working principle:

[0018] See Figure 1This invention requires minimal adjustments. Double-sided adhesive is pre-applied to corresponding positions on different fabrics, then peeled off the glassine paper 3 used for fixing and protecting it. A flatbed press or continuous laminating machine is then used to apply the adhesive at the appropriate temperature, pressure, and speed. Because the outer layer of the double-sided adhesive is low-temperature TPU, it adheres efficiently to clothing fabrics, while the inner layer is high-temperature TPU, which can withstand higher temperatures and is less prone to melting, thus providing support and facilitating the lamination process and ensuring a neat structure at the point of contact with the clothing. Furthermore, this invention limits the strip width to at least 4mm to meet the winding requirements of the double-sided adhesive. This ensures that the double-sided adhesive is neatly and stably fixed on the winding substrate, facilitating bulk storage and transportation. Otherwise, the double-sided adhesive would become loose and unable to be fixed on the winding substrate, hindering its transportation and use.

[0019] The above are merely preferred embodiments of this utility model, intended only to aid in understanding the method and core concept of this application. The scope of protection of this utility model is not limited to the above embodiments; all technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the scope of protection of this utility model.

[0020] This invention comprehensively solves the shortcomings of existing sportswear fabrics that rely on sewing during splicing, resulting in loose threads or braided yarns that lead to insufficient elasticity, lack of skin-friendliness, and a foreign body sensation when worn. By utilizing a combination of high and low temperature TPU, it can quickly bond with sportswear, providing a certain level of support and strength while facilitating the bonding process. Furthermore, the material is soft, resistant to washing at certain temperatures, and has a high softening temperature, making it particularly suitable for use in high-intensity sportswear.

Claims

1. A three-layer double-sided tape, characterized by, It includes a high-temperature TPU (1), a low-temperature TPU (2) and a glassine paper (3). The high-temperature TPU (1) has a layer of the low-temperature TPU (2) on its top and bottom, respectively. The bottom layer of the low-temperature TPU (2) is attached to the glassine paper (3). The thickness of the high-temperature TPU (1) is 0.03mm to 0.05mm, the thickness of the low-temperature TPU (2) is 0.02mm to 0.04mm, and the thickness of the glassine paper (3) is 0.07mm to 0.09mm.

2. The three-layer double-sided tape of claim 1, wherein The width of the double-sided adhesive strips is ≥4mm.

3. The three-layer double-sided tape of claim 1, wherein The weight of the double-sided adhesive is 120 GSM to 160 GSM.

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