Called the Optifil P-MDO, the device is designed to work with W&H's Optifil P auto-gauging systems (either die or air-ring
The BFC Series promises an increase in blown-film productivity, especially in warmer climates or environments where ambient air temperatures rise during the summer, by eliminating production variables in air-ring
supply, including air temperature, pressure, and volume, the company says.
The cooling air from the air-ring
is one of the key factors to stabilize or destabilize the bubble in the film-blowing process.
On three of our lines that are about 10-years old, we evaluated new air-ring
technology," Lord recalls.
It is shown that cooling efficiency is critically sensitive to the air-ring
design as minor modifications cause large variations in cooling performance.
An Auto-Profile Converter Module (ACM) replaces the existing automatic air-ring
junction box and provides local control over the air ring/pancakes, including the control algorithm itself.
The new design of the WesJet AutoPro blown film air ring reportedly improves air-ring
control, gauge tolerance, and yield.
The line also featured the Arctis high-performance, dual-lip air-ring
system, an upgrade of W&H's Opticool air ring that is said to boost output by 5-10%.
On blown film systems, drooling from a die with an external air ring is not a big deal as long as someone occasionally removes the resultant "chimney" of polymer before it encases an air-inlet diverter or the air-ring
designs reportedly enable higher outputs and superior physical properties compared with conventional methods.
Davis-Standard introduced a series of underwater, water-ring and air-ring
pelletizers for normal, micro, and macro pellets in sizes for laboratories up to high-capacity resin plants.
Maintenance is easier with reduced wax and oil contamination on the air-ring