Product category:
Bearings, lubrication, oil and filters
News Release from: Mann+Hummel (UK) | Subject: AutoFluid system
Edited by the Processingtalk Editorial
Team on 02 February 2005
Filtration of moulding cooling fluids
Mann+Hummel have solved a different kind of filtration challenge for a leading European producer of plastic window sections in PVC, using a 10 micron automatic backflushing filter
Mann+Hummel have solved a different kind of filtration challenge for a leading European producer of plastic window sections in PVC They use extruders in the production process and after the moulding stage the hot plastic sections are cooled in water
This article was originally published on Processingtalk on 30 Jul 2004 at 8.00am (UK)
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This leads to the release of dirty substances in the form of soap, wood and plastic residue.
To ensure process reliability these particles must be filtered out to a fineness of 50 micron before they come into contact with the finished product.
Otherwise scratches and grooves lead to a high rejection rate for the window sections.
Particularly critical is the geometry of the suspended matter.
The particles are mostly long and flat.
As a result there is a danger that they can slip out of the filter element.
The strainers previously used did not perform satisfactorily.
They caused problems with the service life and filter fineness.
The filter had to be cleaned on a daily basis leading to high maintenance costs.
The window producer has selected an AutoFluid system from Mann+Hummel which is considerably more efficient and economic.
The defined gap width of 50 micron guarantees process reliability and good quality production.
In addition the system cleans itself with a backflushing action.
Service work is now only necessary every fortnight.
As a result the company has reduced operational costs and payback was achieved in months.
The Mann AutoFluid automatic filter has proven itself to be highly efficient and economic for low and high viscosity fluids with gap widths from 10 micron.
Using a backflushing action the four insets are individually cleaned without using mechanical scrapers.
A specially designed microprocessor system monitors the filter differential pressures and at a preset value operates the valves controlling the backflushing process leading to a long low maintenance service life.
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