压敏胶

PSA

Pressure-sensitive adhesives are physically hardening systems which are characterised by a permanent tackiness. As bonds are made by applying pressure on the adhesive film, better adhesion could be reached with more pressure applied.

Pressure-sensitive adhesives are frequently used for precoating due to their permanent tack which allows a joining of the substrates before as well as after the adhesive has set. Therefore, the bonding can be carried out independent of the adhesive application in a different place and at a different time.

Our pressure-sensitive adhesives are characterised by good adhesion to different materials, and a high strength coupled with high flexibility. Our modern adhesives impress with an outstanding initial strength and a very stable viscosity during processing.

特点

Pressure-sensitive hot melt adhesives provide the following benefits:

100 % solids content, free of solvents
High production speeds due to short setting times
Wide range of adhesion to different materials
They can level out irregularities in the surface
Elastic bondline
Can be reactivated by heat and therefore be used for precoating
Joint can be opened by heating and recycleable

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压敏胶

产品系列、性能与应用

PSA Hot Melt Adhesive

基材: EVA / Polyolefin / Rubber
包装选项: Granulate, cartridge, tin can, hobbock
品牌: 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.

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.