Pepset Resin

UREA FORMALDEHYDE RESIN ADHESIVE

PRESSET 5001 with an appropriate hardener provides a glue for use in the production of plywood.

Specifications:

Appearance: White, viscous, free flowing liquid
Viscosity at 25°C 20-30 Secs (in B4 ford cup)
pH 7.5 – 8.5
Density at 25°C 1.21

Packing :

200 – 250 KG in M.S Barrel.

Storage:

Storage life of liquid resin is 4-6 weeks depending upon the weather condition. The resin should be stored in cool dry place and kept as cool as possible.

Hardeners:

In plywood manufacturing the normal hardener to be used is hot hardener.

Recommended glue mixes:

Resin 100 parts
Water 20 – 25 parts
Hardener 0.5 – 1 parts
Extender (Wheat flour / GNCP / TSP) 10 – 15 parts
Liquor Ammonia 0.5 – 1 parts

In case of hot hardener use 4-5 Parts of hot hardener in 100 Parts of resin.

Basic setting time:

100°C(212°F) – 3 minutes

90°C(194°F) – 2 minutes

110°C(230°F) – 1 minutes

To work out the necessary pressing time one must add to the basic setting times above the time it takes for the heat to travel from the press platen to the farthest glue line. The additional times at different temperatures are :

Press Platen Temperature
Distance to the farthest glue-line 90°C 100°C 110°C
Under 5 mm 1.1 min/mm 1.0 min/mm 0.9 min/mm
5 to 10 mm 1.3 “ 1.2 “ 1.1 “
Over 10 mm 1.5 “ 1.4 “ 1.3 “