Description
Co-Extrusion Blown Film 9 Layer Line for films with up to 9 layers. Available with several versions of computerized controls as well fully automatic weighing hopper resin feeders for optimum control of layer thickness. 9 layers pancake die and 9 extruders all positioned on the floor. The extruders have the following sizes: 7 units 25 mm extruders 2 units 30 mm extruders. The approximate floor area is 6 X 4.6 meters. Blown film towers are made with rigid extruded aluminum profiles with a large solid steel base and sub cabinet. Some of our design features are motorized height adjustment of the Nip-Roll assembly, sub cabinet incorporates the electrical components as well as the blower for the cooling ring (only for standard size air ring). The whole assembly is fitted with four heavy-duty casters where two casters are equipped with brakes. The control panel on the film tower base incorporates digital speed controls for Nip-Roll and wind up as well as turning knob for blower speed. Further it contains Up/Down buttons for the tower height adjustment as well as Start/Stop buttons for Nip-Roll, Wind up, Blower and a pneumatic switch for the lay on and off of the Nip-Rolls. Pneumatically operated film Nip rolls with controls on sub cabinet and optionally equipped with water cooling ring. Infinitely variable speed drive of Nip rolls with heavy duty geared AC motor drive and inverter. High efficiency single channel cooling ring for optimum cooling efficiency and high stability of the film bubble. The cooling air is supplied from a variable speed 3 HP turbo blower. The RPM of the blower is controlled with a turning knob on the towers control panel and is regulated by an AC frequency inverter. The fan speed regulation optimizes the cooling of the film. Streamlined air distribution nozzles to ensure even air flow all around the cooling ring. Film bubble stabilizing cage is equipped with a row of Teflon Coated rollers, the rollers can also be made of carbon fiber. Standard surface wind-up system with easy removable bobbins. Standard PVC water pipe or paper tubes can be used as bobbins. Independent variable speed drive by AC gear motor and inverter as well as an adjustable slip clutch for windup. Separate freestanding central co-extrusion control cabinet incorporating all controls for the film die as well as central speed controls for all extruders.
