HRANITHERM 350 Natural - PUR Hot Melt

Polyurethane reactive hot melt natural adhesive Hranitherm 350 PUR with with wide range of adhesion, good thermal stability and high green strength. The cross-linked adhesive joint shows excellent final strength, resistance to humidity and good flexibility at high and low temperatures. Available also in white colour (Hranitherm 351 PUR)

USAGE / EXAMPLE OF USE

• gluing ABS, PVC and PP edges with primer
• gluing impregnated papers, HPL/CPL
• gluing solid wood, veneer edges

TECHNICAL DATA & SUITABLE WORKING CONDITIONS

Parameter	Value
Adhesive type	Polyurethane
Form	Cartridge, ø 125mm
Colour
350 PUR	Narural
351PUR	White
Viscosity Brookfield (140°C)	approx. 60 000 mPas
VOC (volatile organic compound)	0 %
Density	1,30 g/cm3
Application temperature	140 – 160°C
Room and materials temperature	> 15°C
Open time	4 - 6 sec
Reaction time (according to environmental conditions)*	approx.. 3 days
Max. time from downtime without cleaning (closed melting pot)	24 hours
Ideal operating speed	10 – 60 m/min

APPLICATION / HANDLING

Suitable for machines with 125 mm diameter PUR cartridges. When using the hot melt adhesive, check the application temperature on a regular basis by measuring on the roller or nozzle. The temperature shown on the edge-banding machine control panel may differ from the actual temperature. Lower temperature of the adhesive may affect its open time and consequently impair the bonded joint quality. At a higher temperature, the adhesive may degrade, which affects its colour, viscosity, and adhesion. When banding edges from various materials, regular testing of banding strength and quality is advisable. Recommended temperature of the environment and materials is 15 – 25°C.

NOTICE

Before using the adhesive, check the aluminium foil for leaks and integrity, if it is damaged, do not use the product.

CLEANING

Clean not-crosslinked residual adhesive on furniture elements using Hraniclean 01 (08). In the melting system use PUR-cleaner 890 in cartridge or granules (blue colour) for flushing the glue out, PUR-cleaner 892 HL for cleaning of the crosslinked glue. You find more information of these cleaning agents in their TDS.

PRECAUTIONS FOR SAFE USING

Even under normal conditions of use product may produce hazardous vapours which may cause a respiratory tract irritation. Provide adequate ventilation. Before use read the SDS of the product.

STORAGE

Cartridge 2,2 kg in aluminium foil. Shelf life is 12 months from the production date in optimal storage conditions (cool and dry; 15 - 25°C) in intact packaging. Storing at temperature above 30°C may cause increase of viscosity.
An opened package can be stored in nitrogen atmosphere, or in a special equipment with dry air or in a fridge with temperatures from -10°C to -18°C, maximum 1 week.

TRANSPORT

Information concerning safety and handling through the transport please refer to the Safety Data Sheet.