8.3
Blade contact materials
The cutting blade is made of a special Nichrome alloy (NiCrA) that has the required
electrical characteristics for resistance heating.
The tubing is in contact with a black polytetrafluoroethylene (PTFE) coating only. This
coating is applied at high temperature and is suitable for food contact applications. The
coating ensures minimal adhesion to the tubing during the welding and cutting cycle.
This improves the quality of the weld and results in minimal smearing. The inert nature
of the coating also eliminates any potential contamination.
The black, reflection-free coating also improves the infra-red emissivity of the blade
making it possible to accurately estimate blade temperature with non-contact infrared
sensors.
More information about the coating material may be required for cGMP validation.
Please contact our Customer Service department and ask for non-disclosure forms.
NOTICE
Only use PTFE coated cutting blades (BLADES-IR/50) specified for
use with Sterile Tube Fuser - Wet. For optimal use, do not reuse
blades.
8 Reference information
8.3 Blade contact materials
72
Sterile Tube Fuser - Wet Operating Instructions 29024010 AD
