The Taber paper stiffness tester a basic equipment to test the bending stiffness of paper and cardboard,especially,to test the paper and cardboard.
What is the stiffness of paper?
Stiffness is a measure of the strength performance of paper and cardboard against bending. For the packaging cardboard, stiffness is one of its important quality parameters, because the cardboard made into cartons or other appliances, must have sufficient stiffness to withstand external pressure without bending deformation or being destroyed.
1, the definition of stiffness.
Stiffness refers to the standard conditions, bending one end of the specified size of the clamped specimen to 15o angle of force or moment, to mN or mN-m said.
2, the stiffness of the measurement principle.
The principle of stiffness measurement is by measuring one end of the clamped specimen bent to a given angle when the force or moment required, the force acts on a constant bending length. The bending angle refers to the angle between the initial position of the specimen and the position after the force, the bending length is the radial distance between the specimen clip and the specimen's position under force.
Taber paper testing equipments structure：
Taber paper testing equipments is paper and cardboard bending strength determination of a variety of types of instruments in a common type, this instrument is the paper and cardboard bending stiffness test special instruments. Its measurement part of the structure as shown in Figure 1, mainly by the angle disk, torque disk, pendulum, paper clamps, pushing the paper mechanism, staging heavy thallium and other components.