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What should be paid attention to when storing TPU hot melt adhesive film
​What should be paid attention to when storing TPU hot melt adhesive film? Let me give you a brief introduction. ​First of all, according to the characteristics of TPU hot melt adhesive film, it is an adhesive product that will melt at a certain temperature, so pay attention not to store it in a place with high temperature. In particular, some TPU hot melt adhesive film​ products with low melting point need special attention. Once the ambient temperature is too high, the TPU hot melt adhesive film will partially melt, resulting in adhesion between the adhesive layers, leading to use problems.
2023-03-03
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What should be paid attention to when storing TPU hot melt adhesive film

    What should be paid attention to when storing TPU hot melt adhesive film? Let me give you a brief introduction.

    First of all, according to the characteristics of TPU hot melt adhesive film, it is an adhesive product that will melt at a certain temperature, so pay attention not to store it in a place with high temperature. In particular, some TPU hot melt adhesive film products with low melting point need special attention. Once the ambient temperature is too high, the TPU hot melt adhesive film will partially melt, resulting in adhesion between the adhesive layers, leading to use problems.

    In addition, TPU hot melt adhesive film should be stored to avoid oil contamination, that is, it should not be stored with oil and other products. Once the surface of TPU hot melt adhesive film is polluted by oil, it will have a great impact on the bonding quality of TPU hot melt adhesive film, and will lead to product bonding problems.

    In addition, the TPU hot melt adhesive film needs to avoid being exposed to the hot sun during storage. As a polymer material, TPU hot melt adhesive film is also a plastic product in essence. If over-exposed, the aging process will be accelerated, thus affecting the service life.

    In fact, the viscosity and adhesive strength of TPU hot melt adhesive film are two different concepts. Viscosity refers to the viscosity of TPU hot melt adhesive film, which can be understood as the resistance to liquid flow. It can be said that the higher the viscosity, the worse the fluidity. The lower the viscosity, the better the fluidity. The concept of adhesive strength and viscosity is very different. The adhesion strength refers to the adhesion fastness between two adherends after the adhesive is bonded. The small force required to split or break this connection is called binding strength. Therefore, viscosity and adhesive strength cannot be interchanged. Their practical significance is different.

    

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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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