A blender that provides extrusion control based on batch precision and metering accuracy has been developed by Maguire Products. The WXB Weigh Extrusion Blender can be interfaced with a supervisory system that controls the total production line and is suited to blown and cast film applications.
The WXB incorporates in one machine a gain-in-weight (GIW) weigh bin and a loss-in-weight (LIW) mix chamber with a Maguire 4088 controller. While the GIW function weighs batch ingredients as they are dosed sequentially into the weigh bin, the LIW mix chamber meters the blend into the processing machine and facilitates control of extrusion and haul-off in accordance with process variables. The tight tolerance said to be achieved by the blender is a key to conserving raw material.
Maguire adds that the 4088 controller is designed for communication with other systems in an Industry 4.0 setting. It enables the WXB blender to interface with the Maguire + Synchro supervisory system, which provides control of all segments of the production line from a single touch-screen HMI control.
In blown film production, for example, the system controls extruder temperature, raw material metering and consumption data, air ring automation, gauging, internal bubble cooling, web and cage handling, haul-off and winder. It can also be deployed for co-extrusion with multiple extruders.
The Maguire + Synchro brand is the result of a partnership between Maguire and Synchro that began in 2016 after the former took an investment position in the Italian firm.
Initially, the WXB blender is available in three models: WXB 100 for throughputs of 50-100kg/hr; WXB 200 for 100-200kg/hr; and WXB 400 for 200-400kg/hr. The blenders can be configured for up to 12 ingredients, each with a separate dispenser.