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Hydrolysis resistance of TPU film
​TPU film has excellent comprehensive performance and environmental protection characteristics of natural degradation, and has great development potential in the future. With the continuous improvement of people's environmental requirements and consumption capacity, the substitution effect of TPU film on various alternative products will be gradually reflected.
2023-01-03
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Hydrolysis resistance of TPU film

    TPU film has excellent comprehensive performance and environmental protection characteristics of natural degradation, and has great development potential in the future. With the continuous improvement of people's environmental requirements and consumption capacity, the substitution effect of TPU film on various alternative products will be gradually reflected.

    TPU film is made by calendering, tape casting, blowing, coating and other processes on the basis of TPU particles. At present, it is widely used in sports shoes: trademark decoration on sole and vamp, air bag, air cushion, oil bag, etc.

    Hydrolysis resistance

    TPU film has excellent water resistance function under the condition of turbidity, and will not undergo significant hydrolysis within 1-2 years, especially polyether series. Polyester series will decompose after soaking in 50 ℃ water for half a year, 70 ℃ water for three weeks or 100 ℃ water for three to four days, which is one of the reasons why TPU is suitable for environmental protection. Polyether series is recommended for products that need to contact with water frequently.

    Because TPU film has such excellent properties as high strength, high toughness, wear resistance, oil resistance, cold resistance, aging resistance, environmental protection, non-toxic, degradable, waterproof, moisture permeable, wind proof, cold proof, antibacterial, UV resistance, more and more manufacturers in the market use TPU film instead of PVC membrane, which is used in many industrial and civil fields.

    The TPU film has excellent functions, and the forming and processing technology is convenient and rapid. TPU film has high permeability and moisture permeability, and can be blended with various fabrics to produce high-quality clothing and improve its value. Film is widely used in plastic bags, packaging bags, plastic resin film and other fields at a low price. However, TPU film is replaced by PVC, which has no other advantages. TPU film manufacturer belongs to polyurethane elastomer. After air drying and dehumidification, the plastic thin TPU film is mixed and smelted according to the screw of the extruder, and extruded by the die head after the gauze. Any of the intermediate factors, including the instability of raw materials, may cause uneven thickness of the plastic TPU 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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