Stretching webs of sheet material

摘要

Apparatus for transversely stretching a travelling web of flexible material particularly of extruded plastics netting comprising a pair of travelling conveyor means for restraining the longitudinal web margins from moving laterally inwardly and opposed banks of staggered wheels or endless belts between which the web passes while in the grip of the conveyor means and which press on opposite surfaces of the web at alternate spaced locations across its width to transversely stretch the web.