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Why is TPU hot melt adhesive film said to be an environmentally friendly material?
​As a new type of environmentally friendly material, TPU hot melt adhesive film has been widely used in many fields. So, why is TPU hot melt adhesive film said to be an environmentally friendly material? This article will discuss raw materials, production processes, performance, recycling and reuse.
2023-10-10
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Why is TPU hot melt adhesive film said to be an environmentally friendly material?

    As a new type of environmentally friendly material, TPU hot melt adhesive film has been widely used in many fields. So, why is TPU hot melt adhesive film said to be an environmentally friendly material? This article will discuss raw materials, production processes, performance, recycling and reuse.

    1. Raw materials

    The raw material of TPU hot melt adhesive film is thermoplastic polyurethane, which is a polymer material with good elasticity and wear resistance. Compared with other adhesives, TPU hot melt adhesive film does not use solvents during the production process, thus avoiding environmental pollution problems caused by solvent volatilization. At the same time, the raw materials of TPU hot melt adhesive film are recyclable, further reducing resource waste.

    2. Production process

    The production process of TPU hot melt adhesive film is relatively simple and mainly goes through several stages such as heating, melting, extrusion, and cooling. During the production process, no harmful substances such as waste water and exhaust gas are produced, so the impact on the environment is small. In addition, the production process of TPU hot melt adhesive film has the advantages of high efficiency, continuousness and high degree of automation, which further reduces energy consumption and labor costs.

    3. Usage performance

    As an environmentally friendly material, TPU hot melt adhesive film also has many advantages during use. First of all, it has excellent bonding properties and can quickly bond various materials to improve production efficiency. Secondly, TPU hot melt adhesive film has good weather resistance and hydrolysis resistance, and can maintain stable performance in various environments. In addition, TPU hot melt adhesive film also has good wear resistance, scratch resistance and chemical corrosion resistance, further extending the service life of the product.

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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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