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Advantages and disadvantages of TPU hot melt adhesive film
TPU hot melt adhesive film​ is an excellent adhesive widely used in various fields. This article will conduct a detailed inventory of the advantages and disadvantages of TPU hot melt adhesive film.
2023-11-01
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Advantages and disadvantages of TPU hot melt adhesive film

TPU hot melt adhesive film is an excellent adhesive widely used in various fields. This article will conduct a detailed inventory of the advantages and disadvantages of TPU hot melt adhesive film.

Advantages:

1. Strong adhesion: TPU hot melt adhesive film has very strong adhesion, which can quickly bond different materials together, and the bonded items are not easy to separate.

2. Good temperature resistance: TPU hot melt adhesive film can withstand higher temperatures, so it can be applied in some high-temperature environments.

3. Good water resistance: TPU hot melt adhesive film has good water resistance and can maintain good adhesion in humid environments.

4. High transparency: TPU hot melt adhesive film has very high transparency, so it will not affect the appearance of the bonded item.

5. Good flexibility: TPU hot melt adhesive film has a certain degree of flexibility, which can adapt to the deformation of different materials, thereby better playing a bonding role.

6. Good environmental friendliness: The composition of TPU hot melt adhesive film is relatively environmentally friendly and does not produce toxic substances, so it has little impact on the environment and human health.

Disadvantages:

1. High brittleness: TPU hot melt adhesive film has high brittleness and is prone to cracking due to external forces. Therefore, it is necessary to pay attention to protection during use.

2. Poor aging resistance: TPU hot melt adhesive film has poor aging resistance, and long-term exposure to air will gradually lose its adhesion. Therefore, it is necessary to store in a dry, cool place and avoid direct sunlight.

3. Not applicable to all materials: Although TPU hot melt adhesive film can be applied to many materials, its adhesion may be poor for some special materials, such as polyethylene, polypropylene, and other plastic materials.

4. Difficulty in operation: The operation of TPU hot melt adhesive film is difficult and requires certain training to master the correct usage method. In addition, it is necessary to pay attention to temperature and time control during use to avoid affecting the bonding effect.

5. High cost: Compared to other adhesives, the cost of TPU hot melt adhesive film is higher, which may increase production costs.

In summary, TPU hot melt adhesive film has excellent performance, but there are also some shortcomings that need to be noted during use. When choosing to use TPU hot melt adhesive film, it is necessary to evaluate and choose based on the actual situation.

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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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