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Decomposition temperature of TPU hot melt adhesive film
​TPU hot melt adhesive film is a widely used hot melt adhesive film in various industries, which has excellent adhesion performance, weather resistance, and processing performance. However, for many users, understanding the decomposition temperature of TPU hot melt adhesive film is very important because it involves the performance and stability of the adhesive film at different temperatures.
2024-02-21
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Decomposition temperature of TPU hot melt adhesive film

    TPU hot melt adhesive film is a widely used hot melt adhesive film in various industries, which has excellent adhesion performance, weather resistance, and processing performance. However, for many users, understanding the decomposition temperature of TPU hot melt adhesive film is very important because it involves the performance and stability of the adhesive film at different temperatures.

    The decomposition temperature of TPU hot melt adhesive film refers to the temperature at which the material begins to undergo chemical decomposition during the heating process. When the TPU hot melt adhesive film is subjected to high temperature, its molecular chains begin to break and undergo a series of chemical reactions, ultimately leading to a decrease in the physical properties of the adhesive film and a loss of adhesion. Therefore, understanding the decomposition temperature of TPU hot melt adhesive film is crucial for the correct use of this material.

    Generally speaking, the decomposition temperature of TPU hot melt adhesive film is around 200 ℃. However, different production processes and formulas may have an impact on the decomposition temperature of TPU hot melt adhesive film. Therefore, in practical applications, it is necessary to choose the appropriate TPU hot melt adhesive film based on the specific usage environment and processing conditions.

    Furthermore, it is worth noting that TPU hot melt adhesive film is prone to oxidation and discoloration at high temperatures, which can also affect its performance. Therefore, prolonged exposure to high temperatures should be avoided as much as possible during use, and appropriate storage conditions should be maintained.

    In summary, understanding the decomposition temperature of TPU hot melt adhesive film is crucial for the correct use of this material. In practical applications, it is necessary to choose the appropriate TPU hot melt adhesive film based on the specific usage environment and processing conditions, and pay attention to maintaining appropriate storage conditions.

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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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