There are many indicators of the physical properties of paper, of which there are five main strength indicators, namely tensile strength, folding resistance, bursting resistance, tearing and stiffness. These five strength performance indicators can be easily measured and tested by the test instrument. Basin Faucet,Wash Basin Faucet,Jaquar Basin Tap,Kitchen Basin Tap WENZHOU HUAGUAN SANITARY WARE CO,.LTD , https://www.wzhuaguan.com
There are many indicators of the physical properties of paper, of which there are five main strength indicators, namely tensile strength, folding resistance, bursting resistance, tearing and stiffness. These five strength performance indicators can be easily measured and tested by the test instrument.
I. Tensile strength Tensile strength refers to the maximum tension that can be withstood by paper or paperboard; it is expressed by the load at break of a paper sample measured on a standard specimen with a width of 15 mm. Generally, the tensile strength of paper has transverse tensile strength and longitudinal tensile strength. These two tensile strength indicators are different. Another indicator that is particularly important for the tensile strength index is the long break. See http:// for details. 
Second, the folding resistance folding resistance refers to the 15mm width of the sample with a certain tension and then 135 degrees reciprocating folding until the number of breaks. Paper folding resistance is also divided into longitudinal folding resistance and lateral folding resistance. Usually, banknote paper, map paper, and cover paper have higher requirements on the index of folding resistance. In the production process, factors affecting the folding resistance are fiber length, bonding force, arrangement of fibers in the paper sheet, strength, flexibility; quantitative, thickness, tightness, water content, and the like. 
Third, the bursting degree is the maximum pressure that the paper can withstand under a certain area when the clamped sample is ruptured by a rubber film of a specified size and area under a certain area. Burst resistance is a composite function of tensile strength and elongation; paper bag paper, wrapping paper, and carton board are generally required to have high bursting resistance. 
4. Tear degree Tear degree refers to the force required to tear a certain distance of the paper by using a certain length of the force arm and the pre-cut of the specified length. The factor that affects the tear of the paper is the average length of the fiber, and secondly. It is the fiber bonding force, the fiber arrangement direction, the fiber strength, and the interlacing of the fibers. Similarly, the horizontal and vertical tear of the paper is different, and generally the transverse tear of the paper is greater than the longitudinal tear. 
V. Stiffness Stiffness is the force after bending a specified size (38 × 70 mm) paper to a certain angle. Stiffness is the property of the paper against bending, that is, rigidity, and indirectly indicates its softness. There are also many factors that affect the paper stiffness value, such as fiber bonding force, fiber alignment direction, fiber strength, and the like. 
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn