PSA Hot Melt Adhesive
- Basis
- EVA / Polyolefin / Rubber
- Packaging options
- Granulate, cartridge, tin can, hobbock
- Brands
- Senta MELTAX, Jowatherm
PSA hot melt adhesives are thermoplastic pressure-sensitive adhesive systems that are applied in the molten state and retain permanent tack after cooling. Following application, they physically solidify without requiring chemical curing and rapidly develop adhesion under light contact pressure through effective wetting of the substrate surface.
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The base polymer, tackifier resins, process oils, plasticizers, and stabilizers used in the formulation play a key role in determining tack, peel adhesion, shear resistance, cohesive strength, and substrate wetting characteristics. Melt viscosity, application temperature, coating weight, tack, open time, and thermal stability are among the key technical parameters governing process reliability and final adhesive performance.
By carefully balancing the base polymer and tackifier system, initial tack, peel adhesion, cohesive strength, and permanent pressure-sensitive adhesion can be optimized for different substrates and service conditions. Their solvent-free composition and compatibility with hot melt processing enable efficient application on automated and continuous production lines using slot-die, nozzle, roller, or other hot melt coating systems.
With appropriate formulations, PSA hot melt adhesives can provide reliable pressure-sensitive adhesion to paper, cardboard, polymer films, foils, textiles, foams, and various plastic substrates. Typical applications include pressure-sensitive labels and tapes, self-adhesive products, packaging, hygiene products, textiles, foam lamination, and a wide range of industrial converting and assembly applications.
