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HOME >> INDUSTRY >> Two-Component Adhesive
Sinohesive is a global leader in the field of two-component polyurethane adhesives (commonly referred to as 2K PU or 2K PUR). Two-component polyurethanes are renowned for their exceptional bonding strength, superior mechanical properties, and excellent chemical resistance.
 Two-Component  Adhesive
Compared with one-component polyurethane adhesives, two-component polyurethane adhesives consist of resins and curing agents, such as polyols and polyisocyanate polymers,  that must be mixed before application. While the ratio of each component may vary, proper mixing proportions and thorough blending are critical to initiating the chemical reaction and achieving the desired properties for specific applications.

2K PUR retains all the advantages of one-component polyurethane adhesives, moreover, it could cure faster through larger gaps, and without relying on moisture or heat when curing. 

What is Two-Component Polyurethane Adhesive?
Strong bonding force for enhanced durability

Superior chemical resistance compared to one-component polyurethane adhesives

Higher productivity due to automatic glue supply system and fast curing speed

High versatility and optimized mechanical properties, greatly improved the performance 

Oustanding multi-substrate adhesion, expanding design possibilities

Environmental compatibility with recyclable or partially bio-based adhesives, to increase sustainability
Advantages of Two-Component Polyurethane Adhesives
Applications of Two-Component Polyurethane Adhesives
Flexible Packaging
Two-component polyurethane adhesives are commonly used in flexible packaging applications. They are easily laminated onto film rolls, applied in thin layers with minimal quantities, and their viscosity can be increased through heating.
Building Materials
 These adhesives are ideal for building materials, particularly in partitions and prefabricated structures. Their low viscosity ensures optimal penetration into porous substrates, while their tailored formulations benefit construction materials with optimized density. They are also used in flame-retardant formulations to enhance occupant safety.
Transportation Sector
 Since this adhesive technology can be mixed in a 1:1 ratio in a static mixer (-OH plays the same role as -NCO), making it perfect for sandwich panels and installation applications in the general transportation market. They excel in marine applications, such as ship decking and hull assembly, due to their precise reactivity and outstanding mechanical performance.
Automotive Industry
Due to the excellent impact resistance and vibration resistance of two-component polyurethane adhesives, their performance in automotive applications is exceptionally outstanding. They also bond well wit diverse substrates, including metals, glass, thermoplastics, and composite materials, with remarkable strength.