Prestretching Mechanism TRIZ Cases
- Orbital Stretch Film Wrapping With Self-Tensioning Feed Rollers
Differential-speed feed rollers tension stretch film during orbital wrapping, cutting plastic use and wrap time while air exhaust clears cling.
- Stretch Film Wrapping Assembly for Uniform Bundle Tension
A pre-stretching unit and vacuum box keep film tension uniform around non-circular bundles, improving package stability and avoiding dancer-mass perturbations.