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For TPU hot melt adhesive films of different specifications
​For TPU hot melt adhesive films of different specifications, the contrast viscosity produced by them will also be greatly different due to the difference of their adhesives. When TPU hot melt adhesive film manufacturers make different specifications of TPU hot melt adhesive film​, they will also apply different types of production formulas to make the corresponding matching. If only the viscosity of TPU hot melt adhesive film is considered, the final time length will be very different.
2022-12-27
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For TPU hot melt adhesive films of different specifications

    For TPU hot melt adhesive films of different specifications, the contrast viscosity produced by them will also be greatly different due to the difference of their adhesives. When TPU hot melt adhesive film manufacturers make different specifications of TPU hot melt adhesive film, they will also apply different types of production formulas to make the corresponding matching. If only the viscosity of TPU hot melt adhesive film is considered, the final time length will be very different.

    Technicians from the manufacturer of TPU hot melt adhesive film said that if the viscosity of TPU hot melt adhesive film after curing is simply considered, if the curing time of the whole TPU hot melt adhesive film is long and the curing of TPU hot melt adhesive film is sufficient, the final viscosity time can be well extended. It can be seen that for different types of TPU hot melt adhesive films, the length of the adhesive time of TPU hot melt adhesive films that can be obtained will vary greatly, and the final effect will also vary greatly.

    1. The hardness range is wide, but it still has good rubber elasticity and elongation under high hardness.

    2. High shear resistance, tear resistance and tensile exercise strength. Under the hardness of rubber materials, their tensile working strength and tear strength are much higher than those of general rubber; The impact strength and bending structure strength of plastics with hardness are much higher than those of plastics.

    3. With strong wear resistance, it is used in the shoe village and enjoys the reputation of "wear resistance and rubber".

    4. The oil resistance of polyester polyurethane elastomer is not lower than that of nitrile rubber, equivalent to polysulfide rubber.

    5. Excellent ozone resistance.

    6. It has good shock absorption, radiation resistance and air permeability.

    7. Some softer TPU elastomers also have lower tensile and compression set values.

    Generally, when TPU hot melt adhesive film is produced online, there is an instrument that monitors the thickness in real time. If the degree of automation is poor, the thickness gauge will also be used to measure and adjust the thickness online. In real production, as long as the thickness is adjusted, the production will generally be carried out according to the same thickness, and then appropriate sampling inspection will be almost able to control.

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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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