One of the key indicators of paper strength is its tear strength, which measures the force required to tear a certain length of paper. In the paper production and application process, the measurement of tear strength is crucial to ensure paper quality. A tear Tester is a specialized instrument designed to accurately measure the inner and edge tears of paper.
Classification and measurement methods of tear strength
Internal tear refers to cutting the paper to a certain length, and then measuring the force required to tear from the slit to a certain distance. Edge tear refers to the force required to tear along one side of the paper when it is torn apart by a force on the same plane. These two tear indexes have different requirements for paper strength in different situations, so they need to be measured separately.
How the tear Tester works
The tear Tester is designed based on functional principles and its working process is very precise. When the center of mass of the fan-shaped pendulum of the tear meter rises to the height to be torn, the fan-shaped pendulum is released to change the position of the center of mass, converting potential energy into kinetic energy to tear the paper pattern. When calibrating the instrument, it is necessary to adjust the level of the instrument to ensure that the engraved line under the swing body is flush with the left end face of the swing limiter. Adjust the zero point by adjusting the pointer limiter to ensure that the pointer points exactly at the zero point. The specimen clamps must be in the same straight line position, and there should be no obvious tilt or misalignment. The swing body should not be bent or deformed. The specimen cutter must be installed securely and the blade must be kept sharp. In addition, the friction of the pointer and the swing of the swing body need to be maintained at the appropriate position.
Instrument maintenance and precautions
To ensure the accuracy of tear strength measurements, instrument maintenance is critical. The friction of the pointer and the swing of the swing body need to be checked and adjusted regularly to ensure the normal operation of all parts of the instrument. The sharpness and installation firmness of the specimen cutter also require frequent inspection and maintenance. During the use of the instrument, the operator needs to make meticulous adjustments and maintenance to ensure the reliability of the measurement results.
The application of tear Tester provides an efficient and accurate means for paper production and quality control. Through scientific measurement with instruments, we can gain a more comprehensive understanding of the strength characteristics of paper and provide precise guidance for production. When using the instrument, carefully following standard operating procedures and regular maintenance will ensure the reliability and continued stability of the tear strength measurement. The application of this precision instrument provides technical support for the paper industry and helps improve paper quality and market competitiveness.
