Among the many hot melt adhesive film products, the one with the best elasticity performance is the high-elastic TPU hot melt adhesive film. This adhesive film uses thermoplastic polyurethane (TPU) as the main raw material. It can stretch to four times its original length when stretched and rebound nearly 100% after release. This feature makes it an indispensable bonding material for countless products that require high elasticity, such as outdoor clothing, sportswear, underwear and other high-demand textiles. So, what gives TPU hot melt adhesive film such excellent elasticity? In addition to high elasticity, what other advantages does it have?
1. The unique elasticity of high-elastic TPU hot melt adhesive film
Among the mature hot melt adhesive film types on the market, TPU hot melt adhesive film has the most outstanding elasticity. The main component of this adhesive film, thermoplastic polyurethane particles (TPU particles), is itself a material with excellent elasticity. Compared with ordinary TPU hot melt adhesive particles and other types of hot melt adhesives, high-elastic TPU hot melt adhesive film has stronger elasticity and more stable performance. Its excellent tensile properties enable it to maintain structural integrity when subjected to external forces, and quickly return to its original shape after the external forces are removed.
The tensile properties of high-elastic TPU hot melt adhesive film can usually reach an elongation of 400%, and it can almost achieve 100% rebound. This excellent elasticity enables it to provide stronger bonding adaptability during application, and will not affect the bonding effect due to deformation under force. In addition, this adhesive film can well adapt to the elasticity of textile fabrics, so that the clothing or products after bonding will not be affected by the limitations of the adhesive film during wearing or use.
2. Manufacturing process of high-elastic TPU hot melt adhesive film
The production process of high-elastic TPU hot melt adhesive film adopts advanced scraping equipment and is processed through multiple processes. Its main processes include:
- TPU particle melting: High-elastic TPU particles are heated to a molten state to form a uniform melt.
- Uniform coating: Use special scraping equipment to coat the molten TPU on the substrate or release paper to ensure that the film thickness is uniform and the surface is smooth.
- Cooling and curing: The film is cured through the cooling system and its elasticity and stability are maintained.
- Slitting and packaging: According to customer needs, it is cut into different sizes and specifications and packaged for subsequent applications.
3. High temperature resistance of high-elastic TPU hot melt adhesive film
In addition to high elasticity, high-elastic TPU hot melt adhesive film also has good high temperature resistance. Since the melting point of its main component TPU particles is about 150°C, it can still maintain excellent performance in high temperature environments. This feature makes it more suitable for high temperature processing or high temperature use scenarios than ordinary hot melt adhesive films.
In actual applications, high-elastic TPU hot melt adhesive film can continue to work in an environment of 80°C without melting, deformation or performance degradation. This feature is particularly suitable for industries that require high temperature tolerance, such as:
- Outdoor sportswear: Able to cope with the high temperature friction environment caused by intense exercise.
- Automotive interior: Maintain a stable bonding effect in hot weather.
- Electronic product protection: Still maintain good adhesion in high temperature welding processes.
4. Application fields of high-elastic TPU hot-melt adhesive film
Due to its excellent elasticity, high temperature resistance, environmental protection and non-toxicity, high-elastic TPU hot-melt adhesive film is widely used in the following fields:
Clothing industry:
Seamless underwear, sportswear, yoga clothes and other high-elastic fabrics splicing and fixing.
Waterproof and windproof functional clothing lamination.
Footwear manufacturing:
Sports shoes, outdoor shoes upper splicing.
Combined processing of breathable shoe materials.
Automobile manufacturing:
Bonding of car seats, dashboards, door linings and other parts.
Electronic industry:
Waterproof sealing bonding of electronic equipment.
Medical supplies:
Medical elastic bandages, non-woven fabric lamination, etc.
5. Summary
In summary, high-elastic TPU hot-melt adhesive film has become one of the most elastic hot-melt adhesive film products on the market with its 400% high elongation, nearly 100% resilience, high temperature resistance and wide range of applications. Whether in the field of clothing, footwear, automobiles, electronics or medical, this product has demonstrated excellent performance and stable bonding effect. If your product has high requirements for elasticity, temperature resistance and bonding strength, then high elastic TPU hot melt adhesive film is undoubtedly your best choice.
