RESINS

Resobond A3
Resobond A3 is a 100% resorcinol formaldehyde resin that has been specially modified to give high performance bonds on difficult to glue timbers such as jarrah, teak, kapur, chengal, etc. Resobond A3 is classified as a cold setting adhesive for use at temperatures of 20^o C and above. Better quality glue lines will be achieved if the curing temperature is +25^o C.

Resobond FJR
This is a special, 100% resorcinol formaldehyde resin designed for high-speed finger jointing using automatic glue mixing and application equipment. It is intended for use where the hardener is mixed with the resin just prior to application and pressing. Experience has shown marked increase in finger joint strength using this type of system.

HARDENERS & FILLER

Hardener P4
This is a powdered hardener containing 60% Macadamia nut shell flour and 40% paraformaldehyde. It is designed for use on highly dense timbers and where maximum gap filling is required. Hardener P4 should be mixed one part to four parts by weight with Resobond resins.

Hardener PD4
This is a paste hardener containing 54% paraformaldehyde in diethylene glycol and water. It is designed to reduce the hazards associated with handling powdered paraformaldehyde in the workplace, and to facilitate liquid based automatic glue mixing systems. Hardener PD4 should be mixed one part to five parts by weight with Resobond adhesives.

Hardener ZT-50
This hardener is based on oxazolidine technology. ZT-50 will cure all Resobond resins with zero formaldehyde emission. This is of great benefit to health and safety of workers. The reaction is, however very fast and the mixtures have pot lives of approximately 10 minutes. With appropriate in-line mixing equipment, Hardener ZT-50 can be used for finger jointing and scarfing operations.

Macadamia Nut Shell Flour
This is dry, ground Macadamia nut shells of low moisture and less than 150 m m particle size. It is an excellent filler for resin systems due to its low absorption and low wear on cutting blades.