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Two development directions of TPU hot melt adhesive film
The TPU hot melt adhesive film adopts the coating process, and the product has very strong adhesion fastness, high elasticity and washability, which can be said to be an environmentally friendly product. TPU hot melt adhesive film​ has a wide bonding range and a wide range of hardness, which is very suitable for various temperature resistance requirements. It has perfect elasticity and can keep clothes from deforming. The connection effect is better. So let's talk about the two development directions of TPU hot melt adhesive film.
2022-11-30
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Two development directions of TPU hot melt adhesive film

    The TPU hot melt adhesive film adopts the coating process, and the product has very strong adhesion fastness, high elasticity and washability, which can be said to be an environmentally friendly product. TPU hot melt adhesive film has a wide bonding range and a wide range of hardness, which is very suitable for various temperature resistance requirements. It has perfect elasticity and can keep clothes from deforming. The connection effect is better. So let's talk about the two development directions of TPU hot melt adhesive film.

    1. High-strength TPU hot melt adhesive film

    Adhesive strength is the core performance of the adhesive. If the TPU hot melt adhesive film is to be applied to some occasions with extremely high strength requirements, especially the occasions that bear large structural stress, the adhesive strength must be improved.

    Strong polarity and good wettability are often the characteristics of adhesives that can achieve high bonding strength. Since TPU hot melt adhesive film has no solvent, its fluidity and wettability are short boards. Improve the adhesion of TPU hot melt adhesive film. The bonding strength should mainly start with the polarity and wettability of the TPU hot melt adhesive filmTPU hot melt adhesive film.

    2. High speed TPU hot melt adhesive film

    The high efficiency of TPU hot melt adhesive film is recognized by everyone, because as long as the TPU hot melt adhesive film is cooled, it can harden and form a bond. The bonding speed of cigarette holder sticks can reach 20,000 pieces/minute, book binding can reach 18,000 books/hour, and the production of diapers can reach 1,000 pieces/minute.

    In the future, it is possible to further increase the sizing speed of TPU hot melt adhesive film and expand this advantage, mainly by accelerating the hardening speed, improving thermal adhesion, reducing material specific heat, and optimizing equipment.

    TPU hot melt adhesive film is widely used in many fields, and manufacturers are constantly optimizing the production process, trying to achieve cost reduction and quality optimization.

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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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