3M 2290
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Approximately 21% Solids Coating
- Up to Three-Month B-Stage Window
- Multiple Metal-Coating Methods
Product Description
3M Scotch-Weld Epoxy Adhesive 2290 is a one-part, solvent-based thermosetting epoxy adhesive and coating for metal bonding and lamination. The amber-tinted, low-viscosity formulation contains approximately 21% solids and can be brushed, sprayed, or applied by flow, dip, roll, or knife coating. Solvent removal produces a tack-free B-staged film, allowing coated parts to be stored for up to three months before final heat-cured bonding. Heat pressing is recommended for lamination. Supported uses include motor stator and rotor laminations, copper foil bonding to B-staged epoxy in printed circuits, coils, and thin metal stacks.
Key features
- Approximately 21% solids: The solvent-based epoxy is applied as a low-viscosity coating before solvent removal and heat cure.
- Delayed final bonding: Tack-free B-staged coated parts can be stored for up to three months before final heat curing.
- Six coating methods: Brush, flow, dip, roll, knife, and spray application accommodate different coating processes.
Applications
Electric-motor stator and rotor laminations; copper foil bonding to B-staged epoxy in printed circuits; coils and electronic subassemblies; thin metal stack laminations.
