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The greater the weight per unit area of TPU hot melt adhesive film
​TPU hot melt adhesive film is a type of adhesive material that has a higher frequency of application when used for the composite of the same or different types of materials. Compared to general adhesives, it has much better adhesion performance, water resistance, temperature change resistance, and other properties. For professional hot melt adhesive film manufacturers, only by continuously optimizing their product performance can they better meet the application needs of users.
2023-06-06
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The greater the weight per unit area of TPU hot melt adhesive film

    TPU hot melt adhesive film is a type of adhesive material that has a higher frequency of application when used for the composite of the same or different types of materials. Compared to general adhesives, it has much better adhesion performance, water resistance, temperature change resistance, and other properties. For professional hot melt adhesive film manufacturers, only by continuously optimizing their product performance can they better meet the application needs of users.

    Generally, the larger the weight per unit area of TPU hot melt adhesive film, the thicker its thickness and the greater the amount of adhesive it contains. If the weight per unit area is relatively light, it is considered to be related to the lower amount of glue contained inside. If this type of TPU hot melt adhesive film is used for bonding, only a small amount of adhesive will eventually enter the material, and the overall bonding effect is not very good.

    Clarify the color of the selected TPU hot melt adhesive film. When users use TPU hot melt adhesive film to composite different types of products, there may be certain differences in color requirements. Some product composites do not have specific requirements for the color of TPU hot melt adhesive film. yellow TPU hot melt adhesive film can be selected, and its adhesion is much better than other colors of TPU hot melt adhesive film. But if there are requirements for the color of TPU hot melt adhesive film for the bonded item, it is necessary to select the corresponding color of TPU hot melt adhesive film according to the requirements.

    Before starting to use TPU hot melt adhesive film for bonding, it is necessary to clean the dust and oil stains on the surface of the object to be bonded, so as to promote the full adhesion of TPU hot melt adhesive film in the subsequent bonding process.

    From the perspective of the viscosity produced by the cured TPU hot melt adhesive film, if the curing time of the entire TPU hot melt adhesive film is longer and the TPU hot melt adhesive film is cured sufficiently, the final adhesion time can be well extended. It can be seen that for different types of TPU hot melt adhesive films, there will be significant differences in the length of adhesive time that can be obtained when using them, and the final effect will also vary greatly.

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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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