1.Model Number:CGM218K 2.Color: white 3.use for ptfe thread seal tape

Powder CGF-218 for making seal tapes by paste extrusion

Typical properties :

GRADE	CGF-218H	CGF-218K
Bulk Density	420 +/- 100 g/l
Average Particles Size	750+/- 150 um
Moisture content	max. 0.04%
Specific Gravity	2.19 - 2.25
Melting Point	327 degree C
Tensile Strength	24 MPa	23 MPa
Elongation at break	350 %	300%
Heat Instability Index	30	50
Main Applications	Oil-free unsintered broad tape for cutting apart
Tape width	250mm or more available
Extrusion pressure	20 +/- 5 MPa
Extrudate appearance	flat, smooth and coherent

  

Description :

In addtion to all excellent properties of PTFE material, CGF-218 series powders has outstanding performance in  paste extrusion to manufacture sealing tape, etc..

The resin are processed by mixing them with some organic solvents to obtain paste which are made into coherent, smooth and flat semifinished products after ram extrusion.

Druing this progression the extruding pressure remains steady .The semifinished products can be further processed to produce unsintered tape by calendering, enlongating and removing solvent with heat, and also to manufacture sintered coherent thin-walled tubing , continuous long rod, and  wire & cable coating, etc..

Typical processing conditions for making seal tape:

Liquid Extrusion Aid: Aero KeroseneMixing ratio of the PTFE powder to the liquid extrusion aid: 100 g :  20.3 ~ 20.4 g .Temp. and time for extrusion aid infiltration  before extrusion :  8 ~ 10 hr. at 45 ~ 55 OCRam extrusion temp.: 50OC ~ 60 OCCalendering temp. : 60 + - 10 OCOil removing temp. (for drying) : 200 + - 10 OCElongating temp. : 285 + - 15 OCTape thickness : 0.060 + - 0.005 mm

Packaging, storage and transportation

20kg net packed in double PE plastic bags with a cardboard drum outside.Store in clean, cool ( preferably 5-20 degree C) and dry place

Open containers and use the material in clean environment only.

Introduction