反应型热熔胶

PUR, PO

Reactive hot melt adhesives are heated before processing and applied in a molten state. When the adhesive cools down, it builds up its green strength through a physical hardening process.

Water molecules from the substrate or the air then trigger a chemical reaction which transforms the adhesive into an elastomer.

After complete crosslinking, reactive hot melt adhesives provide stronger bonds with superior resistance to moisture, heat and chemicals. The reactive groups in the adhesive will also form strong covalent chemical bonds with suitable reactive partners on the surface of the substrate, which significantly expands the range of adhesion.

We offer reactive hot melt adhesives based on polyurethane and polyolefin in different supply forms, as well as high-performance PUR adhesives in granulate form for your highest demands regarding quality and appearance.

特点

Reactive hot melt adhesives provide the following benefits:

100 % solids content, solvent-free
Highest resistance to water and steam after chemical curing
Highest heat resistance after chemical curing
High production speeds due to short setting times
A wide range of adhesion to different materials
Due to low processing temperatures, they are ideal for bonding thermoplastic foils
They can level out of irregularities in the surface
Elastic bondlines
As PUR hot melt adhesives will start to crosslink when they come into contact with water molecules, moisture-proof containers and special processing equipment are therefore necessary to prevent unwanted crosslinking of the adhesive

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反应型热熔胶

产品系列、性能与应用

PUR Hot Melt Adhesive

基材: Polyurethane
包装选项: Granulate, cartridge, tin can, hobbock, drum
品牌: Senta MELTAX, Jowatherm-Reaktant

PUR hot melt adhesives are industrial adhesives based on reactive polyurethane technology and are applied in a molten state. During application, the molten adhesive wets the substrate to provide initial bonding, then reacts with ambient moisture and undergoes chemical curing. Once fully cured, the adhesive transitions from a thermoplastic to a thermoset structure, developing high mechanical strength.

Thanks to their high resistance to heat, moisture, and chemicals, PUR hot melt adhesives form durable bonds suitable for demanding operating conditions. Their ability to deliver high bonding performance at relatively low application weights supports efficient and cost-effective manufacturing processes.

PUR hot melt adhesives are available in different formulations to meet specific process requirements in terms of application temperature, open time, and curing speed. When used with the appropriate application equipment and under suitable storage conditions, they provide durable, long-lasting, high-performance structural bonds.

They are widely used in woodworking, furniture, textiles, automotive, filtration, packaging, and construction industries. PUR hot melt adhesives provide strong adhesion between dissimilar materials and reliable performance on a wide range of substrates, including wood, metal, plastics, composites, and fabrics. They are commonly used in applications such as lamination, profile wrapping, edge banding, panel manufacturing, and assembly.

PO Hot Melt Adhesive

基材: Polyolefin (based on different monomers, e.g. ethene, propene, butene, hexene)
包装选项: Cartridge, tin can, hobbock, drum
品牌: Senta MELTAX, Jowatherm-Reaktant

PO hot melt adhesives are industrial adhesives based on polyolefin thermoplastic polymer technology and are applied in a molten state. After application, they physically solidify upon cooling and develop bond strength without requiring any chemical curing reaction.

Thanks to their polyolefin-based structure, they can provide good thermal stability, moisture resistance, and aging performance. Properties such as viscosity, open time, and setting speed can be formulated to meet the requirements of different manufacturing processes.

With suitable formulations, effective adhesion can be achieved on a variety of substrates, including low-surface-energy plastics. Compared with EVA-based hot melt systems, certain PO formulations can provide higher heat resistance, greater flexibility, and improved thermal stability. When the appropriate product and application temperature are selected, PO hot melt adhesives provide fast, efficient, and long-lasting bonding performance for industrial applications.

They can be used in packaging, hygiene products, furniture, textiles, filtration, automotive, and a wide range of assembly applications. Their rapid initial bond strength and suitability for high-speed production lines provide significant advantages in automated and continuous manufacturing processes.