What Are FK Glue And FSF Glue ?

What Are FK Glue And FSF Glue ?

If you import plywood from Russia, you may find that the glue for their plywood are FK glue or FSF glue .  What are FK glue and FSF glue ?

In fact, ‘FK’ stands for Water Resistant Glue (it should be Moisture Resistant Glue) , i.e. MR glue .  FK glue is urea-formaldehyde resin (carbamide-formaldehyde resin) , which should meet E1 or E2 grade. ‘FK plywood’ means ‘MR plywood’ . FK plywood is interior plywood which can be used for interior decoration, furniture, packing.

‘FSF’ means ‘water proof glue’ ( it should be ‘water boiling proof glue’), i.e. WBP glue . FSF glue should be phenol-formaldehyde resin . ‘FSF plywood’ is exterior plywood (WBP plywood), which can be used for building & construction, flooring, roofing, furniture, shipbuilding.

The meaning of FK & FSF:

FK – water resistant plywood (Moisture Resistant, MR plywood)

FSF – water proof plywood (water boiling proof, WBP plywood)