Multi-purpose polyurethane Hot Melt for Sandwich Panel Bonding
SikaMelt®-677 is a reactive polyurethane hot melt adhesive designed to bond various substrates and mainly used for sandwich panel bonding. It cures on exposure to atmospheric humidity. SikaMelt®-677 meets the requirements set out by the International Maritime Organization.
- Very long open time
- High green strength
- Wheelmark approved
PRODUCT BENEFITS
- Very long open time
- High green strength
- Wheelmark approved
- Broad adhesion range
- Excellent heat resistance after moisture curing
- Exceptional ageing resistance
Areas of Application
SikaMelt®-677 is suitable for permanent bonding of polar plastics as well as for wood, foam, textiles, painted and primed steel. Non polar plastics like PP and PE can be bonded after proper physical pre-treatment. It is used for interior trim lamination as well as for Sandwich Panel applications. This product is suitable for professional experienced users only. Test with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.
Surface Preparation
Surfaces must be clean, dry and free from grease, oil and dust. Based on the surface and type of material, a physical or chemical pre-treatment might be required. Type of pre-treatment must be determined by tests. For metals best results are achieved, if substrates are heated up between 40 and 60 °C prior the assembling process.