Nonwovens

Spunbond Throughput to Web GSM Calculator

Throughput sets the weight, take-up speed sets the fineness. Change the belt to fix the GSM and the denier stays where it was — which is usually the point.

Spin Beam Extrusion
g/hole/min
holes/m
no.
m/min
Collector Belt
m/min
m

Web Areal Weight

— g/m²

All beams laid onto the belt at the stated speed

Line Balance

Line Throughput
— kg/h
Filament Linear Density
— den
Spinneret Holes in Line
— no.
Web Produced
— m²/h
Polymer Mass Flow
— g/min

Theoretical web weight with no edge trim and no waste. Trim is a real percentage of a wide spunbond line — subtract it before costing the polymer.

Spunbond Throughput to Web GSM Calculator — free, with the formula and a worked example, at Textile School.