All testing with this type of equipment involves moving one surface with respect to another under controlled conditions and determining any resulting change or interaction between the surfaces. This line of washability machines spans the range from the simple to sophisticated providing force recording of test motion resistance, which has the potential of eliminating subjective operator evaluations by quantifying many types.
|Acceleration Distance:||1.1" - 1.5"||1.3"||1.2"||1.2"||1.2"|
|Cycles Per Minute:||37||6-60||5-50||5-50||6-60|
|Tray Size:||8" x 18"||8" x 18"||8" x 24"||8" x 24"||8" x 18"|
|Drive Fork Force Max lbs.:||24||45||45||45||45|
Friction Measurment Theory - There are two basic reasons for measuring friction. The first is to determine the “slipperiness” of a surface. The other may be of much greater importance. It is quantifying a change in a surface as it is subjected to cleaning or wear testing. A simplified classical definition of friction is: Whenever an object moves upon another, resistance offered to the motion is called FRICTION. Characteristics of friction between such object surfaces are:
In order to measure friction between any two surfaces, one surface must be moved with respect to the other. The pressure or loading between the surfaces must be fixed and known. The force required to start the motion and to retain it in steady state must be determined.
Gardco linear motion test equipment with force measurement capabilities are ideally suited for measuring friction. Models with cut-out bases are designed for making measurements not only on prepared samples but also directly on the surface supporting the machine. The variable rate features of these models permit operating at a sufficiently low velocity so that kinetic energy and momentum factors may be neglected. A velocity of three to five inches per second is suggested when working with most surfaces. The force recorder is highly recommended for use in this measurement even though there is force indication on the machine panel. The recorder provides greater sensitivity and a high response record of force resistance throughout the machine cycle and for repeat cycles.
In order to provide a wide range of different surfaces and the loading on these surfaces, Gardco has produced an auxiliary weight for the abrasion boat and a modified sponge box to carry a much heavier weight. Both of these items are directly cradled by either the standard fork or extended machine drive fork.
Warranty - Gardco warrants the equipment of its manufacture against defects in materials and workmanship for a period of ninety days. Components in the equipment produced by others are warranted only to the extent of the warranty furnished by the producer of the component. The total responsibility of Gardco under this warranty is to replace any item of the equipment, determined by Gardco to be defective, within the warranty period. This warranty is void if Gardco determines that the equipment has been damaged under conditions or use beyond the limits covered by Gardco literature on the equipment. Any returns are the responsibility of the buyer and must first have the approval of the Paul N. Gardner Company.
Disclaimer - The information contained herein, or supplied by us or on our behalf in any other manner is based on data obtained by our own research and is considered accurate. However, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA, THE RESULTS TO BE OBTAINED FROM THE USE THEREOF, OR THAT ANY SUCH USE WILL NOT INFRINGE ANY PATENT. This information is furnished upon the condition that the person receiving it shall make his own tests to determine the suitability thereof for his particular purpose.
ASTM D1792 "Long Term Removability Properties of Emulsion Floor Polishes"
ASTM D2198 "Stain Removal from Multicolor Lacquers"
ASTM D4213 "Wet Abrasion Resistance of Interior Paints"
ASTM D2486 "Scrub Resistance of Interior Latex Flat Wall Paints"
ASTM D3206 "Standard Test Method for Soil Resistance of Floor Polishes"
ASTM D3450 Washability Properties of Interior Architectural Coatings & ASTM D4828
ASTM D4488 Standard Guide for Testing Cleaning Performance of Products Intended for use on Resilient Flooring and Washable Walls
ASTM D6279 Test Method for Rub Abrasion Mar Resistance of High Gloss Coatings, Military Specifications: MIL-C-3004, MIL-C-46057, MIL-E-11237, MIL-P-1334, MIL-P-15422
Rock Island Arsenal Specification RIX-268
Commonwealth of Penna. Specification No. W-4
Canadian Government Specification 26-G-3
FTMS 141, Method 6141, "Washability of Paints"
FTMS 141, Method 6142, "Scrub Resistance"
FTMS Method 536/6701
Federal Specifications: P-D-220, P-R-1760, P-W-155, T-1279,TT-P-26, TT-P-29, TT-P-30,TT-P-47, TT-P-508, TT-P-1932, TT-E-505, TT-E-506, TT-E-509, TT-C-535, TT-C-555
IEC62788-7-3, This test method is used for evaluation the abrsion of materials and coatings in photvoltaic modules or other solar devices.