Contents copyright © 2009 @ Milliken & Company. All Rights Reserved.
Milliken® is registered trademark of Milliken & Company. Milliken Walk Off® Mats is a registered
trademark of Milliken Denmark A/S and Milliken Industrials Ltd.
Issue 2: 2009
5
3.0 Extraction
Unless specifically requested or the mats are made outside normal manufacturing
specifications, all the mats in the Milliken Walk Off® Mats product line are perforated.
These small perforations create micro valves that allow water to pass through them
when sufficient pressure is applied. This provides a more efficient and effective
extraction over the whole surface of the mat.
Membrane presses are not recommended for mat processing. If a membrane press
is to be used for extraction, do NOT overload the pockets and do use a tamping
action during pressing. Damage caused by use of membrane presses is not covered
by the product warranty.
3.1 Calculating G-Forces Developed In Extractors
Metric Measurements:
G-force = 0.56 x RPM
2
x drum diameter (in metres)
1000
Imperial Measurements:
G-force = 0.9144 x RPM
2
x drum diameter (in feet)
1790
Where RPM
2
= square of extractor speed (revolutions/minute).
3.2 Extraction Limitations
In performing extraction, do not exceed the following:
A G force of no greater than 300 G up to a maximum duration of 8 minutes.
(Note: 250G in washer extractors should provide optimal performance)
A G force from 300 to 600 G up to a maximum duration of 2 minutes.
(Note: 300 – 600 G are for use in continuous end of tunnel extractors)
G forces above 600 G are not approved.
