FILAMAR FC300 is a totally organic varnish/ enamel coating, C-3 class (ASTM 976) with outstanding punchability. It has a single component polyester/phenolic base with a cross-linker. It does not withstand SRA (Stress Relieving Annealing) treatment.
- FILAMAR FC300 is suitable for coating thickness of 1.5-3 microns.
- It is designed for applications in low line speed coating systems.
- On account of its outstanding punchability, FILAMAR FC300 is suited for high speed punching machines.
- Pure organic character of FILAMAR FC300 is responsible for a non-porous weld only at very low coating thickness. Weldability is poor for high thickness.
FILAMAR FC300 is hot curing. Optimum curing temperature depends upon the dwell time in the furnace and must be determined for each oven separately.
For FILAMAR FC300, cure pattern is a strip temperature (PMT) of 250 °C for dwell time of 1 minute inside the curing furnace. This can however, be altered as per customer demands.
Following properties are for a typical 2 micron coating thickness.
FILAMAR FC300 (C-3)
||Insulation Resistance (For 2 microns lamination)
||2-3 times Bright Steel
||Stress Relieving Annealing (SRA)
||Does not withstand SRA