STEEL TOE IMPACT TESTER
The toe portion of shoes used for industrial applications or used in mines shall be sufficiently rigid so as not to get pressed down beyond a specified limit when a heavy block falls down on it, thus preventing crushing of or injury to the toe of the user. The toes of miner's safety boots or industrial shoes are generally reinforced with steel toe cap to provide rigidity to them. Whether these toe-caps are sufficient robust so as to fulfill their desired function is ascertained by subjecting the toe-cap assembled in a cut-out shoe to an impact by a falling weight in suitable equipment. The toe-cap shall not press down beyond a specified limit during the impact.
Height of fall : 1020 ± 10 mm
Mass of falling block: 10.0 ± 01 kg and 200 ± 02 kg
Impact energy : 100 ± 2 Joule and 20Cl ± 4 Joule
Striker : Wedge shaped having an included angle of 900, length of at least 60mm,edge rounded to 3 mm radius hardness 50 to 60 HRC
Clamping block : 150 x 150 x 23 mm, Hardness 60 HRC
Base Block : 400 x 400 x 40mm Approx.
EN 344 - 1993 : Requirements and Test Methods for Safety, Protective and occupational Footwear for Professional Use.
IS 15298 (Part – 1) : 2002ISO: 8782 – 1 : 1998
ROSS FLEX TESTER WITH COOLING CHAMBER
The ability of any shoe sole to with stand repeated bending experienced during walking without developing a crack within the estimated life span of the shoe is a very important factor for determining its quality. Also, its ability to withstand propagation of any slit formed due to a sharp edge or pointed object piercing it during walking is equally important in assessing its quality. These abilities of any sole can be evaluated with the help of a Ross Flex Tester.
Dimensions of test specimens : 150 x 25 x 6.3mm
Numbers of test specimens that can
Be tested simultaneously : Six
Angle of bending of specimen : 90
Radius of bend : 5 mm
Frequency of flexing : 1 + 0.1 Hz (60+ 6 cycles per minute
Width if slit : 2.0 mm
Distance of slit from fixed end : 62 mm
Test temperature : Up to -10 C
Motor : ¼ HP single-phase, 230v AC
IS 3400 (Part 16) – 1974 : Methods of Test for Vulcanized Rubbers
Part 16: Measurement of Cut Growth of Rubber by the use of Ross Flexing Machine.
IS 15298 (part I) – 2002: Safety, Protective and Occupational Footwear for.
ISO 8782 (Part I) – 1998 : Professional Use.
IS 15298 (Part – 1) : 2002 : Method to Determine the flexing resistance.
ISO: 8782 – 1 : 1998 Cooling Chamber
Double wall double door inner chamber of SS and outer body of MS duly powder quoted suitable to accommodate the Ross Flex Tester inside the chamber and able to work comfortably on the same.
Tem Rang : - 20° C
Accuracy : + 1° CNote : Extra for Specimen Cutting Die
BENWART FLEX TESTER
To determine the resistance of a component of material to cut growth during repeated flexing, it can also be used to access the effect of surface patterns on crack initiation and growth. The particular test is applicable to out sole of the footwear but may also be used with certain other flexible components.
Number of test specimens tested : Two of full sole, or six of cut test specimens
Angle of flexing : 90
Diameter of bending mandrel : 30 mm
Frequency of operation : 125 to 150 cycles/minutes
Motor : ¼ HP single-phase 230 volts AC
Counter : Pre-set type digital type with memory backup
DIN 53543 - 1979 : Testing of Semi Rigid Polyurethane (PUR) integral Cellular
Materials : Materials for Soles and Parts of Shoes.
SATRA – PM 161 : Bennewart Flex Test Resistance to Cut Growth on flexing.
IS 15298 (Part – 1) : 2002
ISO: 8782 – 1 : 1998Note : Extra for piercing tool with Jig for making crack
COMPRESSION RESISTANCE TESTER CUM NAIL PENETRATION TESTER
Safety / Protective footwear should give safety to the toe of the user under compression load and to the sole against nail penetration. Compression resistance is determined by subjecting the footwear to a specified compression load and measuring the clearance with the help of a modeling clay cylinder. Nail penetration resistance is measured by measuring the maximum force required for a nail to penetrate through the sole.
Capacity of the load cell : 20, 000 N X 10 N
Speed of movement of platen : 5 mm/minute (for compression test) 10 mm/ minute (for penetration test)
Motor : ½ HP single – phase 230 volts AC
BS EN 344 – 1993: Requirements and Test Methods for Safety, Protective, And Occupational Footwear for Professional Use Clause 5.4: Determination of Compression Resistance Clause 5.6: Determination of Penetration Resistance.
IS 15298 (Part – 1) : 2002ISO: 8782 – 1 : 1998
DIN ABRASSION TESTER
One of the methods for determining the abrasion resistance of elastomers is by a Rotating Drum Abrasion Tester. In this test the elastomeric under test is abraded against an abrading surface mounted over a rotating drum. The abrading surface has a specified abrading power. The test specimen, which is in form of a button, is held against it under a fixed load. The abrading surface is made to rub against the test specimen by rotating the drum at a fixed speed, the test specimen being meanwhile made to move along the axis of the drum.
Diameter of test specimen : 16 + 0.2 mm
Height of test specimen : 6 to 10 mm
Diameter of rotating drum : 150 mm
Length of rotating drum : 470 mm
Speed of rotation of cylinder : 40 + 2 RPM
Lateral movement of test specimen holder : 4.2 mm per revolution of drum
Load on test specimen : 10 N / 5 N
Inclination of axis of specimen holder : 3° from vertical
Total length of abrading run : 40 m (about 84 rotations )
Abrasive cloth : 450 mm wide X 473 mm long coated with aluminum oxide abrasive grain of 60 grit
Motor : ¼ HP – 230 volts AC
Is 3400 (Part – 3): 1987 : Methods of Test for Vulcanized Rubbers Part – 3
DIN 53516 : Testing of Rubber and Elastomers – Determination of Abrasion Resistance.ISO 4649 : 1985 : Rubber Determination of Abrasion Resistance using a Rotating Cylindrical Drum Device.
The Ability of light leathers and leather –cloth used in manufacture of shoe uppers. Gloves, and garments to withstand repeated flexing without cracking is determined with the help of a flexing endurance test in this test specimens in shape of rectangular pieces are folded and clamped at each end to maintain them in a folded position in a set of grip s, one of which is fixed while the other is able to oscillate. The movement of the oscillating grip causes the fold in the test specimen to run along its center. This operation is carried out repeatedly and the test specimens inspected periodically to assess the damage produced. The equipment used for this is called as Flex-o-meter.
Angle of oscillation of grips : 22.5+0.5
Flexing frequency : 100+5cycles/minute
Dimensions of test specimens : 70x45 mm
Maximum number of test Specimens that can be tested At on time : SIX
Motor : ¼ HP single –phase 230 volts AC
IS 5914-1970 : Methods of physical testing of leather
LP19 : Flexing endurance
IUP/20-1963: Official methods of international union of leather chemist Society
IS 15298 (Part – 1) : 2002ISO: 8782 – 1 : 1998
Resistance to hot contact tester:
WATER RESISTANCE TESTER - (PENETROMETER)
The uppers of shoes get folded over the toe portion every time a step is taken. These repeated folding cause the finished grains to start cracking, resulting in loss of water resistance. To ensure that the leather uppers retain their water resistance for a reasonable period of use, the action of such folding on them is simulated by subjecting test specimens taken from the leather to a water penetration test using a electrometer.
In this test the test specimens are held in form of thoughts between two cylindrical grips one of the grips is then repeatedly moved towards and away from the other along their common axis .the test specimens are kept immersed in a water bath unto a part of their periphery. Penetration is detected when electric conductivity is established between the inside and outside surfaces of the test specimens
The time needed to cause penetration of water through the test specimens is determined and taken as an index of water resistance of the leather. The test can be continued to determine the percent gain of weight of the specimen due to water absorption and also to determine the mass of water that has transmitted over a known time interval.
Dimensions of test specimens : 60mm X 70mm
Number of test specimens tested at a time : Three or four
Diameter of cylindrical grips : 30 mm
Flexing frequency : 50 cycles per minute
Travel of moving grip : 2.0, 3.0, 4.0 or 6.0mm (5, 7, 5, 10, or 15%)
Motor : ¼ HP single phase 230 V AC
IUP/10: Official Methods of International Union of Leather Chemists societies.
IS 5914: 1970: Methods of Physical Tesing of Leather.
LP 20: Dynamic Water Proof-ness Test for Upper Leather
IS 15298 (Part 1): 2002 : Water Penetration & Water Absorption tester
ISO: 8782 – 1 : 1998Note: Extra for Specimen Cutting Die.
WATER VAPOUR PERMEABILITY AND WATER VAPOR COEFFICIENT
Water vapour permeability of leather is evaluated by clamping a circular test specimen over the mouth of a bottle containing a solid desiccant and subjecting it to a rapid current of air. The air inside the bottle is circulated by keeping the desiccant in motion. The increase in weight of the bottle over a specified interval of time gives the quantitative measure of the water vapor permeability of the leather sample under test.
Speed of rotation of wheel : 75 rpm
Distance between axis of rotation and axes of bottles : 67 mm
Maximum number of bottles which can be mounted at a time : Six
Inner diameter of bottles : 30 mm
Speed of rotation of fan : 1425 rpm
Size of blades of fan : 75X90 mm
Motor : ¼ HP 230 volt, single-phase AC
IUP/25 : Official Method of International Union of Leather Chemists Society.
IS : 15298 (Part-I) : Methods of Physical Testing of Leather
ISO : 8782-1 : 1998Note: Extra for Co- efficient cup