Table 1.
Characterisitcs of phenol-formaldehyde resin for the test

Resin types	Powder resin (novolak type)
Items
Solid content (%)	99
Melting point (°C)	80~95
Specific gravity	-
Celation time (sec.)	80~120
Plate flow (mm)	30~35
viscosity (cps)	-