Application requirements of paper tensile testing machine
Date: 2022-01-11 12:27
Paper and paperboard test plays an important role in the pulp and paper industry because of its wide application demand. In printing, the tensile strength and elongation of both sliced paper and web must meet the requirements of customers. The tensile breaking strength, breaking load and elongation of paper and paperboard, including breaking strength, breaking length, tensile breaking load and crack resistance coefficient, are the main objects to be investigated. Paper tensile testing machine There is no big difference with the common electronic universal tensile testing machine. However, due to the unique properties of paper, the paper tensile testing machine should pay special attention to two points.
1. The stretching amount of paper and paperboard is the key standard to measure its quality. Because the paper tensile testing machine is used in packaging, corrugated paperboard and paper towel, it is necessary that the paper can fold freely and bear local tensile stress. Therefore, in the test, after the specimen is initially clamped by the upper chuck, a small amount of stress is added to eliminate wrinkles, and then the specimen is pulled to fracture within the specified time.
2. For paper towel and paper bag under stress after wet, the test needs special fixture.
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