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Hot melt film
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Is TPU film harmful to the human body?
​TPU film is a widely used polymer material in various fields, and its safety and reliability have been widely recognized. However, due to their different chemical properties and composition, some TPU film may be harmful to the human body.
2023-11-01
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Is TPU film harmful to the human body?

    TPU film is a widely used polymer material in various fields, and its safety and reliability have been widely recognized. However, due to their different chemical properties and composition, some TPU film may be harmful to the human body.

    Firstly, it should be noted that some TPU films may contain harmful chemicals to the human body. These chemicals may include components such as phthalates and polycyclic aromatic hydrocarbons, and long-term exposure to these substances may cause harm to human health. Especially for sensitive populations such as pregnant women and infants, exposure to these harmful substances should be avoided as much as possible.

    Secondly, some TPU films may cause allergic reactions. Some people may be allergic to certain components in TPU films, and using or contacting these films may cause symptoms such as skin allergies and rhinitis. Although these allergic reactions are usually mild, they still require attention, especially for those with a history of allergies.

    In addition, some TPU films may have issues with odor or volatile organic compounds (VOCs). These odors or VOCs may have a certain impact on human health, especially for people with respiratory diseases or allergic symptoms.

    However, not all TPU films can cause harm to the human body. Some TPU film manufacturers have taken measures to ensure the safety and reliability of their products, such as using environmentally friendly materials and optimizing production processes. Therefore, when using TPU film, it is advisable to choose reputable and reliable manufacturers and brands, while paying attention to the correct usage methods to avoid any harm to the human body.

    In summary, TPU film may be harmful to the human body in certain situations, but as long as the appropriate brand and usage method are chosen, damage to the human body can be avoided. When using TPU film, attention should be paid to its composition, production process, and usage methods to ensure its safety and reliability.

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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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