Leather peel tester for testing leather

Leather peel tester for testing leather

Dongguan Haida Instrument 400-071-1808/0769-89280808

Tensile strength testing machine for leather can do what test? With this question, Haida Instruments can solve all kinds of tensile strength testing machines for leather testing :

1 , leather coating adhesion fastness test

Fixture needed: leather fastness fixture

Tensile strength testing machine working principle:

Used to test the adhesion fastness between the leather finishing layer and the leather ( or between coating layers ) , using a non-solvent adhesive, to adhere a part of the finishing layer of a piece of leather on the adhesive board, in strips of leather The free end exerts a force to peel the leather coating layer to a predetermined length, and the coating layer is adhered to the binding plate by the adhesive, and the applied force is used as the adhesion fastness of the coating layer to the leather.

Testing requirements:

Test speed 100 ± 5mm/min , and can automatically record force - distance diagram

Adhesive plate support: made of metal

Pull hooks ; made of steel wire

Oven: able to maintain a temperature of 85 ± 3 °C

2. Determination of tensile strength and elongation of leather

Required fixture: plane fixture or universal clamp fixture

Tensile strength tester working principle: used to test the tensile strength of leather, the specified load or elongation at break, the sample is stretched to a predetermined force value at a certain rate or until the sample is broken The degree of stress and stretch during the hour

Testing requirements:

Range is compatible with the measured object

Fixture for uniform motion at 100 ± 20mm/min

The minimum length of the clamp holding surface along the direction of the force is 45mm, and the sample is fixed mechanically or pneumatically. The material and design of the inner surface of the fixture shall be such that when the specimen reaches its maximum load, the sliding distance with the fixture does not exceed 1% of the initial distance of the fixture .

Preparation of samples: three samples of grain leather, three samples of meat leather

3 , leather unilateral tear test

Required fixture: plane fixture or universal clamp fixture

Tensile strength tester working principle: used to test the unilateral tearing force of leather, from the rectangular edge of the sample is torn on the edge of the moment, record the force generated during the tearing process and calculate the average value. Also called trouser tear

Testing requirements:

1 , the measurement range and the measured object is suitable

2. Fixtures are tested at a uniform speed of 100 ± 20mm/min

3 , the device with recording force - distance curve

4 , the minimum width of the fixture (50 ± 2) mm

4 , leather bilateral tear test

Required fixture: plane fixture or universal clamp fixture

Tensile strength tester working principle: For the bilateral tearing of leather, a rectangular sample ( with a hole in the middle ) of the prescribed shape of the leather is placed on the test hooks of the upper and lower clamps of the tensile testing machine, and the tensile testing machine reaches the running time. The maximum force value is the tear force of the sample.

Testing requirements:

The required test force should be less than the capacity of the machine itself