73679237
Aug 18, 1987
Jun 27, 1989
AIR RINGS AS USED FOR COOLING PLASTICS FILM DURING ITS MANUFACTURE BY EXTRUSION; PLASTICS TUBE MAKING MACHINES; BUBBLE STABILIZERS, COLLAPSERS, AND SIZERS, AS USED FOR PLASTICS TUBE MANUFACTURE BY EXTRUSION; UNWINDERS, SEALERS, FOLDERS, AND GUSSETERS, AS USED FOR FILM AND SHEET HANDLING AND BAG MAKING; DIES, AND DIE CARTS AS USED FOR PLASTICS EXTRUSION; PLASTICS EXTRUDERS AND SCREWS THEREFOR; INTERNAL COOLERS FOR EXTRUDED PLASTIC FILM BUBBLES; TARPAULIN MAKING MACHINES; POLYMER FEEDERS FOR PLASTICS EXTRUDERS; PLASTICS FILM WINDERS, SLITTERS, PERFORATORS, COOLING STATIONS, AND WEB HANDLING ROLLERS AS USED FOR FILM AND SHEET HANDLING; PLASTICS EXTRUDER FILTER SCREEN CHANGERS; SECONDARY COOLERS FOR USE IN PLASTICS FILM MANUFACTURE BY EXTRUSION; AND ROTATING TOWERS FOR GAUGE EQUALIZATION IN PLASTICS FILM MANUFACTURE, ALL SUCH APPARATUS BEING SOLD AS SEPARATE ITEMS AND ALSO IN COMBINATIONS AS COMPLETE MANUFACTURING SYSTEMS
Machinery