TPU film (thermoplastic polyurethane film) is a high-performance eco-friendly material intermediate between rubber and plastics, combining the soft elasticity of rubber with the strength and durability of plastics. It can be reshaped by heating and exhibits excellent processability.
TPU, short for Thermoplastic Polyurethane, is synthesized through the polymerization of polyols and diisocyanates, combining multiple superior properties:
Excellence in physical properties: wear-resistant, tear-resistant, maintains elasticity at-40°C low temperatures, and resistant to fracture.
Environmentally friendly and non-toxic: Free from halogens and other harmful substances, it produces non-toxic combustion gases and serves as a substitute for PVC. Some variants exhibit biocompatibility, making them suitable for medical applications.
High processability: Can be fabricated into films through various processes, facilitating composite bonding with substrates.
⚙ Main Types and Applications
TPU film formulations are diverse, enabling the production of products with varying properties to suit different applications.
|
Classification method |
Main types |
Core Features |
Typical Applications |
|
According to chemical structure |
aliphatic series TPU |
The molecular structure is stable, resistant to yellowing and UV radiation, with high transparency. |
Invisible vehicle coatings, aerospace materials, and high-end automotive interior/exterior trim |
|
aromatic TPU |
High cost-performance ratio, excellent mechanical strength, prone to yellowing |
Shoe materials, general industrial supplies, hoses, etc. |
|
|
Based on base materials |
Polyester-based TPU |
Anti-tear, oil-resistant, and high mechanical strength |
Shoe materials, luggage fabrics, furniture fabrics, air cushions |
|
Polyether-based TPU |
Resistant to hydrolysis, mold, and exhibits excellent low-temperature performance |
Water sports equipment, waterproof backpacks, medical catheters, inflatable products |
|
|
Based on surface appearance |
High-transmission/high-gloss coating |
High transparency with excellent color reproduction |
Mobile phone screen protector film, transparent packaging, brand logo |
|
Matte/fogged film |
The surface is non-reflective with a fine texture and conceals fingerprints. |
Electronic product casings, high-end decorative fabrics, anti-glare screen films |
|
|
Waterproof and breathable film |
Prevent liquid water retention, promote sweat evaporation, and maintain dryness |
Charging suits, functional sportswear, medical protective clothing |
Cutting-edge application areas:
Solar cell backsheet: high light transmittance, etc., replacing traditional fluorine-containing materials.
Intelligent and functional reinforced materials: Incorporating nanoparticles to enhance conductivity, ultraviolet resistance, and gas barrier properties, suitable for smart wearable devices.
Hot melt adhesive film: Melts upon heating with adhesive properties, used for seamless garments and similar applications.
How to choose TPU film?
The selection of TPU film can be based on the following considerations:
Clarify core requirements: prioritize aliphatic types for yellowing resistance, polyether types for hydrolysis resistance, and polyester types for high elasticity and wear resistance.
Confirm physical parameters: determine thickness (0.01-2mm), hardness (60HA-85HD), and color/transparency.
Consider the processing methods: Determine whether printing, bonding, or high-frequency welding is required, and inform the supplier of recommended products.
We hope this information helps you gain a comprehensive understanding of TPU films. For details on specific applications, please feel free to ask.
