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How soft is the TPU film?
As a polymer material, TPU film has attracted much attention for its softness. This article will discuss the softness of TPU film from aspects such as TPU's molecular structure, performance characteristics, and application fields.
2023-10-18
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How soft is the TPU film?

    As a polymer material, TPU film has attracted much attention for its softness. This article will discuss the softness of TPU film from aspects such as TPU's molecular structure, performance characteristics, and application fields.

    First, let's understand the molecular structure of TPU. TPU is formed by the interaction of urethane groups and urea groups in the molecular chain. The interaction of these groups makes the TPU molecular chain more flexible, thus making the TPU film have good softness.

    Secondly, TPU film has excellent elasticity, toughness and low temperature resistance. These performance characteristics are related to the flexibility groups in the TPU molecule. Due to the flexibility of the TPU molecular chain, the TPU film can still maintain good softness and elasticity at low temperatures. At the same time, the TPU film also has good tear resistance and tensile strength, which makes the TPU film show good durability and stability in various application fields.

    In addition, TPU film also has good transparency and weather resistance. Since TPU molecules do not contain unsaturated bonds, they have good UV and ozone resistance. This allows the TPU film to maintain long-term transparency and stability when used outdoors.

    In practical applications, TPU films are widely used in outdoor facilities, tents, swimming pools and other fields. Its good softness and stability make it popular in these fields. For example, in tents, TPU membrane can be used as a waterproof material. Its excellent light transmittance and weather resistance allow the tent to maintain good performance after long-term use.

    In short, as a polymer material, TPU film has been widely used and recognized for its softness and stability. Whether in terms of molecular structure or practical application, TPU film has good flexibility.

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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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