Cutting Room
A stretch lay keeps shrinking after the spreader stops. Cut it early and every panel in the bundle is short.
— min
To reach the target recovery
A single exponential is the simplest useful description; real elastane recovery has a fast and a slow component, so the last percent takes longer than this predicts. The right answer is usually to spread at lower tension rather than to rest longer — resting costs cutting room floor space and every hour of it is throughput.
Spread Fabric Relaxation Time Before Cutting — free, with the formula and a worked example, at Textile School.