How to Determine the Leather Tensile Strength
Tensile strength refers to the tensile force on the unit cross section of the broken part of the sample when the sample of the finished leather is pulled to break at a certain rate, expressed in MPa. The purpose of measuring the tensile strength of [...]
How to Perform Leather Abrasion Resistance Test
Among the most watched properties of leather, abrasion resistance is one of them, because leather’s ability to withstand abrasion is directly related to the quality level and working life of leather. For instance, the common leather products we can touch in our daily life include [...]
How to Conduct Water Penetration Test for Leather on Flexing
It is normal that Leather shoes encounter water when worn, so determination of water resistance of leather subjected to flexing is necessary for product developers and manufacturers. Leather dynamic water penetration tester is used to let the grain surface of test leather in continuously flexed [...]
How to Test Water Vapour Permeability(WVP) of Leather Using Dynamic Method
Water vapour permeability of leather means the ability that the water vapour comes into the air whose humidity is lower than leather from the air whose humidity is higher through the leather or fur. Because leather has water vapour permeability, it can help wearers in [...]
How to Use Ball Burst Method to Measure Uppers Resistance to Damage(Distention and Strength of Leather Surface)
Leather of upper stretched tightly on the last or worn on the feet is not only subjected to tensile force from different directions, but also subjected to jacking force of vertical direction, so conducting the bursting strength test as a practical and comprehensive index is [...]
How to Measure the Thickness of Leather with Leather Thickness Tester
Different types of leather have different requirements for thickness. For example, the thickness of general cowhide leather for vamp is 1.2mm-1.5mm, and sheepskin leather for upper is 0.6mm-0.9mm. Determining the leather thickness is also an indispensable step before making determinations of leather tensile strength, leather [...]
How to Use Leather Shrinkage Temperature Tester to Conduct Shrinkage Temperature Measurement
Leather test piece is placed into water to heat up slowly, which begins shrinking suddenly when the water temperature reaches a certain value. The temperature at this critical point is called as Leather Shrinkage Temperature. After shrinkage, the physical(mechanical) properties of leather will have some [...]
How to Test Flexing Resistance of Leathers at Low Temperature
We have already introduced the Determination of Flexing Resistance of Leathers conditioning temperature of (20±2)℃ and relative humidity of (65±2)℃ in last article, but although some leathers or coatings are able to pass the flexing test at ambient temperature, they can’t adapt to low temperature. [...]