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If the heating temperature of the TPU hot melt adhesive film is too high and the melting degree exceeds the required standard, glue leakage and glue leakage may easily occur.
​An adhesive is a substance that holds two or more materials together and comes in many different types. Among them, TPU hot melt adhesive film​ is an adhesive widely used in the composite materials industry. Different from ordinary cold glue, the use of TPU hot melt adhesive film requires attention to details to achieve the ideal bonding effect. This article will discuss with you what you need to pay attention to when using TPU hot melt adhesive film.
2023-09-20
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If the heating temperature of the TPU hot melt adhesive film is too high and the melting degree exceeds the required standard, glue leakage and glue leakage may easily occur.

    An adhesive is a substance that holds two or more materials together and comes in many different types. Among them, TPU hot melt adhesive film is an adhesive widely used in the composite materials industry. Different from ordinary cold glue, the use of TPU hot melt adhesive film requires attention to details to achieve the ideal bonding effect. This article will discuss with you what you need to pay attention to when using TPU hot melt adhesive film.

    If the heating temperature of the TPU hot melt adhesive film is too high and the melting degree exceeds the required standard, glue leakage and glue leakage may easily occur. If it is accidentally stuck to the equipment and is not handled in time, it is easy for the film to age and accumulate. At the same time, it will also cause the equipment to be contaminated, and even worse, it will cause damage to the equipment and affect its overall service life.

    Compared with hot melt adhesive films made of other materials, TPU hot melt adhesive film feels softer at the same thickness, so it is suitable for lamination and bonding of textile fabrics in the clothing field. The fabric bonded with TPU hot melt adhesive film will be very comfortable to wear on the human body and will not feel plastic or foreign body.

    There are certain differences in the characteristics, applicable industries and products of TPU hot melt adhesive films of different specifications. In addition to classifying TPU hot melt adhesive films according to the raw materials we understand, there is actually another classification method. However, this classification method is more general. According to the classification with or without release paper, it can be divided into hot melt adhesive film with release paper and TPU hot melt adhesive film without release paper. Release paper is similar to oil paper and contains silicone oil. The model without release paper is also called TPU hot melt adhesive film. It has a single layer structure and only one layer of double-sided TPU hot melt adhesive film. There is little difference in product performance between these two types, but there are differences in usage methods, and the choice should be based on the customer's actual use process.

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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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