TPU hot melt adhesive film is a type of hot melt adhesive film based on thermoplastic polyurethane (TPU).

1、 Main features:

Excellent adhesion performance: TPU hot melt adhesive film has good adhesion performance and can effectively bond with various materials, providing strong adhesion force.

Durability and Flexibility: TPU material has good elasticity and flexibility, allowing TPU hot melt adhesive film to adapt to various applications that require elasticity and deformability. This characteristic makes TPU hot melt adhesive film widely used in textile coating, clothing, shoe materials and other fields.

Environmental Protection and Safety: TPU hot melt adhesive film is usually made of non-toxic and harmless materials, which comply with environmental and safety standards.

Good temperature resistance: TPU hot melt adhesive film has good performance stability at both high and low temperatures, and is not easily deformed or lose function.

High transparency: TPU hot melt adhesive film usually has high transparency and will not obstruct the appearance of the adhered object.

Wear resistance: TPU hot melt adhesive film has excellent wear resistance and can withstand long-term use and friction without easy wear.

Chemical resistance: TPU material has good chemical resistance and can resist the erosion of various chemicals, making it durable in some special environments.

2、 Application scenarios:

Shoe material: TPU hot melt adhesive film is widely used in the manufacturing of shoe materials, such as the bonding of shoe uppers, soles, insoles, and other parts.

Clothing: TPU hot melt adhesive film can be used for bonding in clothing manufacturing, such as sportswear, outdoor clothing, underwear, etc.

Automotive: TPU hot melt adhesive film can be used in automotive manufacturing for bonding parts such as car seats, instrument panels, door panels, etc.

Medical: TPU hot melt adhesive film can be used in the manufacturing of medical devices, such as medical gloves, medical dressings, surgical instruments, etc.

Electronics: TPU hot melt adhesive film can also be used in the manufacturing of electronic products, such as bonding for mobile phones, computers, tablets, etc.

3、 Bonding principle:

Mechanical bonding: The bonding force between TPU hot melt adhesive film and the adhered object is mainly mechanical bonding force. After the adhesive is applied to the bonding surface, the bonding principle of TPU hot melt adhesive film allows it to penetrate into the pore structure of the object being bonded, and then cure through different drying methods, forming friction between it and the object being bonded, increasing the bonding force between them.

Mutual diffusion: The bonding between polymer compounds is caused by the diffusion of large molecules or their segments through thermal motion, essentially resulting in the dissolution of the interface, which interweaves the bonding principle and adhesive molecules of TPU hot melt adhesive film, forming a strong bond.

Chemical reaction: The interface between TPU hot melt adhesive film and the adhesive may also undergo chemical cross-linking reactions, including hydrogen bonding, coordination bonding, and covalent bonding.

本文来源于随装新材料