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Uncover TPU hot melt adhesive film: composite plant owner personally teach selection skills
​TPU hot melt adhesive film, as an important composite material, is widely used in many fields because of its unique properties. The owners of laminating factories know that choosing a high-quality TPU hot melt adhesive film is crucial for improving product quality and competitiveness. The following are their personal tips for selection:
2024-05-13
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Uncover TPU hot melt adhesive film: composite plant owner personally teach selection skills

    TPU hot melt adhesive film, as an important composite material, is widely used in many fields because of its unique properties. The owners of laminating factories know that choosing a high-quality TPU hot melt adhesive film is crucial for improving product quality and competitiveness. The following are their personal tips for selection:

    Understand the material properties:

    The main component of TPU hot melt adhesive film is thermosetting polyurethane material, which has excellent elasticity, abrasion resistance and low temperature resistance. These properties enable TPU hot melt adhesive film to maintain a stable adhesive effect during the lamination process, while adapting to a variety of complex working environments.

    Water washing resistance is one of the important factors to consider when selecting TPU hot melt adhesive film. High-quality TPU hot melt adhesive film should have excellent washing resistance, to ensure that the composite products are not easy to peel off in the washing process, more durable.

    High temperature resistance is also one of the factors to consider when choosing TPU hot melt adhesive film. In a high temperature environment, TPU hot melt adhesive film should be able to maintain a stable bonding effect, without deformation or melting phenomenon.

    Observe the appearance quality:

    High-quality TPU hot melt adhesive film should have a colorless, transparent and elastic appearance, and the surface should be flat and smooth, without bubbles, impurities and other defects. These appearance characteristics can reflect the production process and quality control level of TPU hot melt adhesive film.

    Pay attention to check the quality of the release paper of TPU hot melt adhesive film. The release paper should be easy to peel and leave no residual adhesive after peeling. This ensures that there will be no contamination or damage to the laminated products during the lamination process.

    Consider the application scenarios:

    Choose the right TPU hot melt adhesive film according to different application scenarios. For example, in the apparel industry, you need to choose soft, comfortable, washable TPU hot melt adhesive film; in the shoe industry, you need to choose low temperature resistance, wear-resistant TPU hot melt adhesive film; in the automotive interior industry, you need to choose high temperature resistant, environmentally friendly TPU hot melt adhesive film.

    Understand the production process:

    Choose the TPU hot melt adhesive film manufacturer with advanced production process. Advanced production process can ensure the stable performance and reliable quality of TPU hot melt adhesive film. At the same time, the advantages and disadvantages of the production process will also affect the cost and price of TPU hot melt adhesive film.

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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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