Step 4 - Finishing (Calendering & QC Testing)
Calendering
Filter cloth is stabilized in preheating machinery. Final
surface finishing and permeability is achieved with high speed
calenders - heated, polished, steel rolls - which press the
fabric making the surface smooth and compact and further "set"
the cloth.
QC Testing
Accurate permeability readings are taken "on the fly"
during the finishing process as the fabric feeds through the
calender stack. The jumbo rolls finally processed in inspection
and re rolled into 100 yard packages. A laboratory analysis
is made of each roll, including weight, thread count and permeability
and the roll is ticketed with an individual serial number
and released to our warehouse.
Continue to Step 5 - Cloth
Construction 1 ![]()