Multi-Purpose Hotmelt Adhesives
SikaMelt® adhesives are part of our broad range of hotmelt products, with a chemical structure based on polyurethane, polyolefin (with reactive components) or thermoplastic rubber.
SikaMelt® is ideal for bonding plastics and composites, as well as metals, wood, paper, textiles and foams, for both interior and exterior automotive applications. Physical curing starts while the product is cooling down from its processing temperature and for reactive hotmelts, continues in a chemical crosslinking. Curing speeds vary depending on the moisture content of the air and the temperature, as well as on the moisture content and permeability of the substrates being bonded.
Main Material Properties
Our engineers can help you identify the right adhesive based on the requirements of your application.
Polyolefin reactive hot melts:
- Tensile strength: 1 – 4 MPa
- Elongation: 200 – 450%
Polyurethane reactive and non-reactive hot melts:
- Tensile strength: 12 – 25 MPa
- Elongation: 300 – 1000 %
Pressure-sensitive adhesive hot melts:
- Peel strength: 5 – 50 N/25mm
Applications
SikaMelt® adhesives are usually applied by roller-coater, film, spot, bead, or spray application using melting equipment. Specialized cleaners are available to make cleaning the application equipment and tools fast and easy. Processing temperatures range from 70 °C up to 190 °C.
- Door panels and inserts
- Headliners
- Seat back panels and load floors
- Sun visors
- Trim parts
Benefits
- Broad adhesion spectrum – on non-polar and polar substrates
- High final strength and flexibility – over a broad temperature range
- High green strength
- Excellent aging and heat resistance
