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How to choose TPU hot melt adhesive film
The TPU hot melt adhesive film​ market is very large, and the annual growth rate is the fastest in the world. With the rapid development of domestic industry, textile industry, garment industry and other industries. The demand for thermal bonding technology is increasing, and TPU hot melt adhesive film occupies a very important position in the overall composite materials market. Here, GreenTPU will explain to you how to choose TPU hot melt adhesive film.
2022-05-27
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How to choose TPU hot melt adhesive film

The TPU hot melt adhesive film market is very large, and the annual growth rate is the fastest in the world. With the rapid development of domestic industry, textile industry, garment industry and other industries. The demand for thermal bonding technology is increasing, and TPU hot melt adhesive film occupies a very important position in the overall composite materials market. Here, GreenTPU will explain to you how to choose TPU hot melt adhesive film.

1. First determine whether to use release paper TPU hot melt adhesive film or bare TPU hot melt adhesive film. For example, release paper is generally used for secondary composite molding with TPU hot-melt adhesive film; if only one compounding process is required, bare TPU hot melt adhesive film can be considered. Although this judgment method is not 100% accurate, it can still be used for reference.

2. Determine the characteristics of the TPU hot melt adhesive film according to the type of adhesive material. This is difficult. It is necessary to know clearly that the properties of TPU hot melt adhesive films with different properties are different. For example, the materials bonded at different temperatures are also different.

3. Selection of the thickness of TPU hot melt adhesive film After determining the specification and model, it is necessary to determine what thickness of TPU hot melt adhesive film to use. To properly choose the thickness, you must know that when the TPU hot melt adhesive film is not very special, it is recommended that the thinner the better!

4. Width and length. As a buyer, when inquiring about TPU hot melt adhesive film, I always ask if there is a wide TPU hot melt adhesive film. In fact, the width and length of the TPU hot melt adhesive film do not need to worry too much. As a manufacturer, the width is usually divided according to the actual production needs.

TPU hot melt adhesive film is a recyclable and environmentally friendly product with low loss rate during the production and use of TPU hot melt adhesive film. Film scraps can be fully recycled in the process of making key materials, which has the advantages of reducing energy consumption, activation temperature, initial setting, carbon dioxide emissions and cost.

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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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