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TPU hot melt adhesive film is a relatively common hot melt adhesive film
Among hot melt adhesive films, TPU is a common type. Due to its good softness and washability, it is better to use TPU hot melt adhesive film when bonding fabrics in the garment industry. For fabric products manufacturers, although most TPU hot melt adhesive films can be used, it is still necessary to pay attention to the selection, because there are some differences between them.
2023-06-19
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TPU hot melt adhesive film is a relatively common hot melt adhesive film

    Among hot melt adhesive films, TPU is a common type. Due to its good softness and washability, it is better to use TPU hot melt adhesive film when bonding fabrics in the garment industry. For fabric products manufacturers, although most TPU hot melt adhesive films can be used, it is still necessary to pay attention to the selection, because there are some differences between them.

    TPU hot melt adhesive film is a stable adhesive that remains solid at room temperature and becomes sticky only when heated to a certain temperature. Therefore, the use method of TPU hot melt adhesive film will vary due to different bonding materials and composite environments. Next, the steps of using TPU hot melt adhesive filmwill be introduced.

    The use of TPU hot melt adhesive film can be divided into two situations, one is non-mass production: for example, it is used in small areas, and it is used in small-scale shops with processing properties (such as shops operating curtains); in the second case, industrial production needs Batch processing.

    Hot melt adhesive film is a double-sided adhesive that requires heat to function. Many enterprises need to use hot-melt adhesive film, which can be covered on material A with the help of high-temperature lamination technology equipment, and wait for time to cool to ensure that the system is fixed. After that, tear off the release paper, and paste material B on the hot melt adhesive film. The bonding effect is achieved by pressing the surface of material B at high temperature. This method is called "seamless bonding".

    Almost all TPU hot melt adhesive films can be used for bonding various fabrics, but different types of hot melt adhesive films have different characteristics for different fabrics. Therefore, the selection needs to be identified according to the specific characteristics. If the fabric itself requires high elasticity, it is recommended to use a medium-high temperature TPU hot melt adhesive film for lamination. If the fabric itself is less elastic, it should be laminated at low temperature, and a low-temperature TPU hot melt adhesive film should be selected.

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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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