Description
For two layer extrusion blow moulding utilizing our Bottle Blow Moulding attachment LBM-125-COEX coupled with two extruders of either 20 or 25 mm screw diameters. Fully automatic unit with modern designed cabinet, equipped with large Plexiglas windows for clear visualization of the bottle blow molding process. With large front door which opens upwards for easy access to mold area during setup. The door is interlocked with double safety and the mold area is fully surrounded by cabinets and windows, making it impossible to reach the molding area during processing. The controls are made with easy to understand LCD colour touch screen and buttons for both fully automatic as well as manual controls of the machine. The pneumatic inflation controls are conveniently located on a separate panel next to the door. The special Co-Ex two layer die is made with spider inlets and spiral flow channels on the mandrels to ensure a very even melt distribution without flow lines. The die is also designed for easy purging to minimize resin usage and time when changing from one colour to another. The die is equipped with parison adjustment as well as adjustment screws for centering of the die lips for even thickness of the parison. The die is connected to the extruders with high pressure individually heated and controlled adaptors through the side of the blow molding attachment and the adaptors are equipped with flange for easy connection to the C-Clamps of the extruders.
The machine is equipped with Parison Hot Cutter suitable for all bottle resins. The Hot Cutter consists of a special flat heated steel strip mounted on insulated copper arms connected to a pneumatic piston, which will quickly move the strip across the parison and give a clean cut. A heavy duty high amperage transformer supplies the low voltage heating current to the steel strip. This system ensures a clean and trouble free cut off of the parison and it allows the blow pin to enter the cut off area of the parison without distortion, ensuring a leak free blow up of the bottle inside the mold. Discharge pins will hold the bottles after blowing for one cycle to allow additional cooling before it is automatically dropped into the discharge chute where it will exit out at the left side of the machine body. The strip is heated by a low Voltage, high Ampere supply from a built in power unit. The machine is fully hydraulic driven, with a large medium pressure (50 Bar) system for long leak proof lifetime of all components and with generous heat exchanger to prevent heating of the hydraulic oil. All hydraulic components are mounted in the sub cabinet.
