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The bonding effect of TPU hot melt adhesive film is related to its thickness
​When using TPU hot melt adhesive film​ for material compounding, in addition to the thickness of the adhesive film itself, the bonding effect of the TPU hot melt adhesive film is also related to its thickness. Generally speaking, thicker TPU hot melt adhesive films contain more glue and have better adhesion after compounding. TPU hot melt adhesive film is a colloidal material with relatively good adhesion, and there are many types on the market. In the composite process of different materials, there are certain differences in the types of TPU hot melt adhesive films required.
2023-09-22
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The bonding effect of TPU hot melt adhesive film is related to its thickness

    When using TPU hot melt adhesive film for material compounding, in addition to the thickness of the adhesive film itself, the bonding effect of the TPU hot melt adhesive film is also related to its thickness. Generally speaking, thicker TPU hot melt adhesive films contain more glue and have better adhesion after compounding. TPU hot melt adhesive film is a colloidal material with relatively good adhesion, and there are many types on the market. In the composite process of different materials, there are certain differences in the types of TPU hot melt adhesive films required.

    The thinner thickness of the TPU hot melt adhesive film and the higher or lower temperature will directly affect the melting speed of the TPU hot melt adhesive film, which in turn affects the fluidity of the TPU hot melt adhesive film and the humidity surface of the material. It will also affect TPU hot melt adhesive film. It has a certain impact on the bonding effect and bonding strength.

    TPU hot melt adhesive film is a type of hot melt adhesive. The performance is stable at room temperature and has no adhesive force. But the condition for producing adhesive force is to heat it, and then when it reaches the corresponding temperature and melting point, it is melted and cooled to achieve the effect of adhesive, so the TPU hot melt adhesive film can melt.

    TPU hot melt adhesive film is an environmentally friendly product made using a coating process. Compared with traditional glue, it is more environmentally friendly and environmentally friendly. No harmful gases or harmful substances will be produced during use. This is one of the reasons why more and more consumers choose TPU hot melt adhesive film.

    TPU hot melt adhesive film is usually a medium solid adhesive film that needs to be heated to a certain temperature before lamination. Heating temperature that is too high or too low will affect the viscosity of the film. Therefore, during actual lamination, it is necessary to control the hot pressing temperature of the adhesive film to ensure that the adhesion of the entire TPU hot melt adhesive film is in the best state.

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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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