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The key to the purchase of TPU hot melt adhesive film is the correct selection
​Famous for its durability, TPU hot melt adhesive film combines many valuable properties from rubber to plastic, mainly in the following aspects. ​1. TPU hot melt adhesive film has a wide range of hardness, but it still has good rubber elasticity and elongation under high hardness.
2023-06-09
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The key to the purchase of TPU hot melt adhesive film is the correct selection

    Famous for its durability, TPU hot melt adhesive film combines many valuable properties from rubber to plastic, mainly in the following aspects.

    1. TPU hot melt adhesive film has a wide range of hardness, but it still has good rubber elasticity and elongation under high hardness.

    2. High resistance to scissors, tearing and tensile movement. Under the hardness of rubber materials, their tensile working strength and tear strength are much higher than those of general-purpose rubber; under the hardness of plastics, the impact of TPU hot melt adhesive film Strength and bending structural strength requirements are much higher than plastics.

    3. Strong wear resistance, TPU hot melt adhesive film is used in shoe villages, and enjoys the good name of "wear-resistant and rubber".

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

    5. Excellent ozone resistance.

    The key to the purchase of TPU hot melt adhesive film is the correct selection

    The so-called treatment requires the right medicine, and the same is true for the use of TPU hot melt adhesive film materials and film composite materials. Only by compounding can the true adhesion of the TPU hot melt adhesive film be achieved. Different materials and surfaces have different properties, so the principles of the bonding machines they use are different. According to the properties of the materials to be bonded, the ideal bonding effect can only be obtained by choosing the right one.

    bonding temperature and time.

    In the use of TPU hot melt adhesive film, the bonding temperature is a particularly important factor, because the TPU hot melt adhesive film begins to melt at a certain temperature, so special attention should be paid. If the glue temperature is too low, it will cause insufficient melting of the hot melt glue powder, poor fluidity, and affect the bonding effect. If the glue temperature is too high, the TPU hot melt adhesive film will melt too much. If the hot pressing time is not adjusted in time, the glue layer will penetrate too much and the glue layer will lack glue. It should be noted that the operation time of the hot melt adhesive film bonding is adjusted according to the temperature. When the temperature is higher, the time is shorter. When the temperature is low, the time needs to be extended accordingly.

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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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