Have you ever slipped on the road or in the bathroom? Do you know why you slip?There are two main reasons :

A. For ground reasons                       B. For the material and texture of the sole

So, what is the slip resistance of the shoes? GESTER will unveil it for you today.

Definition:

Static slip resistance refers to the anti-slip ability of an object that is in a static state on the horizontal surface when it is moved. The friction coefficient reflect the anti-slip performance of the shoe. The larger the friction coefficient, the better the anti-slip performance. The coefficient of friction is the ratio of the force required to move an object to the surface of another object and the vertical force between the surfaces of the object.

Process:

Test method for anti-skid performance of footwear. This standard is divided into dry test and wet test. Dry test means the slipmeter is in a state without water, while wet test means the slipmeter is in a state with water.Using test machine：Static Slip Resistance Tester GT-KB43

Procedure of Dry Test：

1)Scrub the slipmeter with a neutral detergent and test after the slipmeter is completely dry.

2)Weigh the sample by a balance.

3)Fix the back side of the test piece into the sample tank with double-sided tape or glue. The direction of the toe of the test piece is opposite to the direction of the force applied.

4)Place the specimen holder on the friction panel, and the specimen surface to be tested is in contact with the friction panel.

5)Pull the test fixture horizontally and the speed shall be (40±10)mm/mine

6)When the pulling distance reaches 100mm, record the maximum pulling force in the process.

7)Repeat step No.3 to 6 for a total of four times for each location. Rotate the slipmeter 90° in the same direction (clockwise or counterclockwise) after each time.

Procedure of Wet Test:

Clean the slipmeter with neutral detergent, and spray distilled water or deionized water evenly on the surface of the slipmeter with a manual spraying pot after the slipmeter is completely dried to form a continuous and complete water film. Place the sample on the slipmeter for 30 seconds before testing, repeat the steps of dry procedure.

Test Result:

The calculation formula of static friction coefficient as below: μ0=F/W

In the formula:

μ0: Static friction coefficient of test piece.

F: The maximum arithmetic mean value of tensile force in four directions of sample.

Ｗ: The positive pressure of sample, the unit is Newton (N).

Take the arithmetic mean of three samples’test results as final result, accurate to second decimal point.

GESTER specializes in research and development and production of footwear testing equipment for more than 20 years. We will provide the most appropriate test solutions to help you to better control product quality with scientific attitude and cutting-edge technology. We have established long-term cooperative relationships with SGS, Bureau Veritas, TUV, Intertek, etc. And also have passed suppliers evaluation for Adidas, New Balance, PUMA, BATA, etc.