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When using double-sided hot melt adhesive film, you need to pay attention to the following details
​As an efficient and convenient adhesive material, double-sided hot melt adhesive film has been widely used in industrial production. However, in order to give full play to its advantages, we must pay attention to some usage details to ensure the accuracy and safety of operation.
2024-04-25
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When using double-sided hot melt adhesive film, you need to pay attention to the following details

    As an efficient and convenient adhesive material, double-sided hot melt adhesive film has been widely used in industrial production. However, in order to give full play to its advantages, we must pay attention to some usage details to ensure the accuracy and safety of operation.

    First, it is crucial to ensure that the bonding surface is clean. double-sided hot melt adhesive film needs to be in direct contact with the adherend. If there is oil, dust or other impurities on the bonding surface, the adhesive force of the adhesive film will be seriously affected. Therefore, before use, be sure to wipe the bonding surface clean with a clean cloth or dust-free paper to ensure that the surface is smooth and dry.

    Secondly, the heating process is also a key step that needs to be paid attention to when using double-sided hot melt adhesive film. The control of heating temperature and time directly affects the melting state and adhesive force of the adhesive film. Too high a temperature may cause the adhesive film to burn, while too low a temperature may prevent the adhesive film from fully melting. Therefore, before use, we need to set the appropriate heating temperature and time according to the specifications of the film and the manufacturer's recommendations. At the same time, heating equipment also requires regular maintenance and upkeep to ensure its normal operation.

    In addition, we also need to pay attention to some details during the lamination process. First, make sure the pressure is uniform and avoid local pressure that is too high or too low. Secondly, the lamination time should also be moderate. Too long a lamination time may cause excessive compression of the adhesive film and affect the bonding effect; while too short a lamination time may cause the adhesive film to fail to fully contact the adherend.

    Finally, we also need to pay attention to the storage environment of double-sided hot melt adhesive film. The film should be stored in a cool, dry and ventilated place, away from direct sunlight and high temperatures. At the same time, contact with chemicals should also be avoided to avoid adverse effects on the performance of the film.

    In short, when using double-sided hot melt adhesive film, we need to pay attention to cleaning, heating, lamination and storage. Only by fully understanding and mastering these usage details can we ensure that the double-sided hot melt adhesive film exerts its maximum bonding effect, improves production efficiency, and reduces production costs.

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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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