Martindale Abrasion Tester is used to determine abrasion as well as pilling resistance of any type of Woven, non-woven, knitted and Coated fabric.

Determination of resistance of any fabric to abrasion is usually carried out by rubbing the fabric under specified conditions against a standard abradant wool fabric. Although plane abrasion of fabric surface does not cover all aspects of strains that are important in determining service life, there are occasions when such a test gives useful information.

One of the standard equipment used for this determination is the Martindale Abrasion cum Pilling Tester. This apparatus gives a controlled abrasion between fabric surfaces at comparatively low pressures in continuously changing directions as Lissajous figures. Circular fabric specimens are abraded under specified pressures under a motion which is the resultant of two simple harmonic motions at a right angle to each other. The abrasion resistance is estimated by visual appearance or by finding the loss in mass of the specimens.

The Martindale Abrasion cum Pilling Tester consists of a plate that is given a motion combining two harmonic motions at a right angle through three rotating eccentric pegs, four / six / nine number abradant holders against which the test specimens are abraded.

The plate is supported on three stainless steel balls and has three slots for locating the eccentric pegs in. The pegs are rotated with the help of an electric motor at a fixed speed of 47 rpm through a worm reduction gearbox, and toothed belt, arrangements such that the central peg is rotating at a slower speed than the two outer pegs, which rotate at the equal speed. The movement of the pegs causes the plate to move in two mutually perpendicular directions in simple harmonic motions, thus providing the necessary abrading action, which is repeated after every 16 rotation

The test specimens are mounted on flat metallic discs and are backed with a thin layer of polyurethane foam. The shafts of the specimen holders are guided vertically in bushes on the moving plate. Thus the movement of the plate causes the specimen holders to move with the plate, abrading it against the abradant fixed mounted in holders located below them. The force on the test specimens can be altered by adding or removing dead weights from the specimen holders.

A digital type pre-set counter or touch screen panel counts the number of rotations of outer pegs individually and stops the motor automatically after a pre-set number of rotations of each head. Templates for marking the test specimens and abradant, disc weights to keep them flat during fixing, and mounting jig for test specimens are provided as standard accessories.

The various components are mounted on a sturdy fabricated steel base plate and are finished in shore blur metallic painting and bright chrome/zinc plating to give them a corrosion-resistant finish.

Related Standards

International Standards : ISO 5470
British Standards : BS 3424, 5690, BSEN 388/530, BSEN IS 12945.2
Japanese Standards : JIS L 1096
American Standards : ASTM 4966 / 4970-99
German Standards : DIN 53863, 53865
Finnish Standards : SFS 4328

How it works

Technical Specification :

No. of Heads : 6
Working Pressure on test specimen : 3 KPA, 9KPA and 12 KPA (4 Nos each)
Maximum Available Pressure : 12 KPA (790 gms)
Rotational speed of Outer peg : 48 ± 2 RPM
Total Stroke of Outer and Inner Peg : 24 mm for Pilling, 60 mm for Abrasion
Power Supply : 230 V AC 50 Hz.
Power Consumption : 0.3 KWH

Standard Accessories Supplied with Machine

38 mm Diameter Sample Cutting Template : 1 No.
140 mm Diameter Sample Cutting Template : 1 No.
Weights 3 KPA, 9KPA and 12 KPA : 6 Nos. Each
Abrading Felt (Non-woven) of 140 mm Diameter : 6 Nos.
Abrading Fabric of 140 mm Diameter : 6 Nos.
Polyurethane Foam of 38 mm Diameter : 6 Nos.

Features:

Touch Screen Panel
Individual Setting for all the heads
Noiseless operation
Adjustable pressure via dead weight
Auto stop Motion
Emergency Switch for instant stop
Draw a Lissajous figure in every sixteen rounds
Mallet weights as per standards

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Q : Can we check abrasion and pilling both?

A : Yes, We can check Pilling and Abrasion both in Martindale abrasion cum pilling tester. There is a setting to set the size of the Lissajous figure, for The lissajous figure size is 60x60 mm and 24x24mm for pilling.