chemical production of the bopp film. film extrusion. production of a stretch film of granular low density polyethylene

background bopp business cellophane chemical chemistry circle clean different entrepot environment equipment extruder extrusion factory film food halffinished industrial industry logistics machine machinery manufacturing material package packaging petrochemical plant plastic polymer polypropylene polythene power production protection roll rollslitting shipment spool stretch tape technology thermoplastic transparent tube white workpiece works wrap