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Explanation of the decomposition temperature of TPU hot melt adhesive film
TPU hot melt adhesive film is a high-performance and environmentally friendly hot melt adhesive film widely used for bonding and fixing various materials. Due to its excellent performance and wide range of applications, more and more people are paying attention to TPU hot melt adhesive films. However, for some users, the decomposition temperature of TPU hot melt adhesive film may not be familiar. Next, we will provide a detailed introduction to the decomposition temperature of TPU hot melt adhesive film.
2023-10-30
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Explanation of the decomposition temperature of TPU hot melt adhesive film

    TPU hot melt adhesive film is a high-performance and environmentally friendly hot melt adhesive film widely used for bonding and fixing various materials. Due to its excellent performance and wide range of applications, more and more people are paying attention to TPU hot melt adhesive films. However, for some users, the decomposition temperature of TPU hot melt adhesive film may not be familiar. Next, we will provide a detailed introduction to the decomposition temperature of TPU hot melt adhesive film.

    1、 Definition of decomposition temperature

    The decomposition temperature refers to the temperature at which a hot melt adhesive film undergoes a decomposition reaction when subjected to high temperatures. Usually, the decomposition temperature of hot melt adhesive film is influenced by factors such as its composition, formula, and production process. Therefore, different hot melt adhesive films will have different decomposition temperatures.

    2、 The importance of decomposition temperature

    The decomposition temperature is crucial for the service life and adhesion performance of TPU hot melt adhesive film. In practical use, if the decomposition temperature of TPU hot melt adhesive film is too low, it will lead to premature decomposition reaction, which will affect its adhesion and durability. If the decomposition temperature is too high, it will lead to a decrease in its adhesion performance and even loss of adhesion. Therefore, selecting an appropriate decomposition temperature is crucial for ensuring the performance and service life of TPU hot melt adhesive film.

    3、 How to choose the appropriate decomposition temperature

    When selecting the appropriate decomposition temperature, the following factors need to be considered:

    1. Usage scenarios: Different types of TPU hot melt adhesive films are required for different usage scenarios. For example, for scenarios that require the ability to withstand high temperatures, it is necessary to choose a TPU hot melt adhesive film with a higher decomposition temperature.

    2. Material properties: The required decomposition temperature may vary depending on the material being bonded. For example, for some materials that are difficult to bond, it is necessary to choose a TPU hot melt adhesive film with a higher decomposition temperature.

    3. Production process: Different production processes can affect the composition and formula of TPU hot melt adhesive film, thereby affecting its decomposition temperature. Therefore, it is necessary to choose an appropriate decomposition temperature based on the actual production process

    4. Cost: The higher the decomposition temperature, the higher the production cost of TPU hot melt adhesive film. Therefore, cost factors need to be considered when selecting the appropriate decomposition temperature.

    In summary, the decomposition temperature of TPU hot melt adhesive film is one of its important performance indicators, which is crucial for adhesive performance and service life. Choosing an appropriate decomposition temperature requires comprehensive consideration of factors such as application scenarios, material properties, production processes, and costs. Only by selecting an appropriate decomposition temperature can the performance and service life of TPU hot melt adhesive film be ensured.

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TPU hot melt adhesive film vs anaerobic adhesive: "Scene flexibility" difference in automotive interior bonding
2025-09-11
​From the perspective of curing conditions, TPU hot melt adhesive film does not need to rely on special environments, while anaerobic adhesives are severely restricted by "auerobicity". The curing principle of anaerobic glue is to undergo polymerization under conditions of lack of oxygen and catalyzed by metal ions (such as iron and copper). If it is in an environment where air circulation or metal substrates are not available, the curing speed will be greatly slowed down or even unable to cure. In automotive interiors, most bonding scenarios are "open" (such as bonding the door panel skin to PP substrate, and the ceiling fabric to the sponge), the air can freely contact the bonding surface, and the substrate is mostly non-metallic (PP, ABS, fabric, etc.), lacking metal ion catalysis, and additional catalyst is required when using anaerobic glue, and the curing time is as long as several hours, which is difficult to meet the needs of industrial production. The TPU hot melt adhesive film only needs to be melted by heating (120-160℃) and can be cured after pressurization and cooling. It does not need to rely on the ambient oxygen concentration or the base material. It can be cured stably in open or closed bonding scenarios, and the curing time only takes a few dozen seconds to a few minutes, adapting to the fast-paced needs of the interior production line.
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