Genfil® TP BC is a zero halogen flame retardant cable bedding compound that was designed as a moisture proof barrier and filler for use in Low Smoke Halogen Free (LZHF) constructions.

KEY FEATURES

• Highly Flame Retardant
• RoHS & REACH compliant
• Excellent processing
• Uses no Heavy Metals

PHYSICAL PROPERTIES

Density: 1.66 g/cm3
Durometer: 55 Shore A

COMBUSTION PROPERTIES

Oxygen Index: 32%
Acid Gas: 0.2%

SUGGESTED RUNNING CONDITIONS

Extruder L/D: 20:1 or 24:1
Comp. Ratio: 1.25:1
Screen Pack: 20 mesh or none
Screw Type: Single Flight metering, without mixing section
Feed Zone: 190ºF
Screw Cooling: Not Required
Gradient Cooling:  Not applicable
Center Zone: 190‐210ºF
Die Cooling: Not recommended
Color Concentrate: Not applicable
Head/Die: 220ºF

PROCESSING TECHNIQUES

The Genfil TPBC has been designed to process easily on standard extruders used in the production of wire and cable products. The material has been designed to process similar to elastomeric compounds, attaining maximum output levels at relatively low shear rates. Care should be taken to ensure that screw compression ratio levels are below 1.5:1, and flow restrictions in the crosshead are kept to a minimum. Melt temperatures higher than 275oF (135oC) should be avoided.

For best results, the material should be extruded in tandem with the overall sheath to minimize any cold flow during storage on the reel. If tandem extrusion is not available, care must be taken to minimize the amount of total cable on the reel to minimize flat spots.

The material is supplied as free flowing pellets, packaged in sealed foil lined boxes and does not need to be dried prior to use. It is recommended that the foil liners be resealed after use to prevent outside contamination or water absorption during storage. If the material has been exposed to a high humidity environment, or the foil liner has not been sealed, it is recommended the material be dried for a minimum of 4 hours at 140oF (60oC) in a standard desiccant style drier prior to use.