E corrugated carton test, cardboard test, burst test professional packaging materials ..

Test E-type corrugated cardboard, cardboard test, burst test professional packaging materials laboratory bursting strength of paper divided by its quantification. Bursting refers to paper or paperboard in the unit area can withstand the maximum vertical pressure even increase, its unit is represented by kilopascals (Kpa). Determination of bursting simple, widely used in the production of the determination. It is an important performance indicator cardboard, wrapping paper and Sack's. Bursting with fiber length and fiber bonding related to fiber length and high bonding strength of paper, cardboard its bursting is also high. And beating degree of mechanical treatment directly affects the binding capacity of the slurry and an average fiber length of the pulp fibers. Improve freeness, then bursting increases, but beating too high, so the anti-bursting decline. Bursting is paper, cardboard comprehensive reflection of the strength properties of many, it is the tensile strength, elongation, tear strength are mutually influential. When the burst strength test sample, choose not to pay attention to the watermark, bankbook, wrinkles, damage and other issues of pattern, specifications for a sample of 12 140mm × 140mm, from three sample boxes, each depicting four, try like side should be parallel with the corrugated shape. The sample was divided into two groups bursting strength testing, a group with a positive paste to rubber membrane, another group of negative rubber membrane attached to detect when the sample is crushed, read detected values. The detection value of each sample and divided by the number of samples to test results. Bursting strength of paper fiber toughness, hardness and thickness of the paper, tightness, moisture content and adhesive strength cardboard have a certain relationship. Bursting strength can be measured by the bursting tester, bursting strength of corrugated board may extrapolated from the raw materials used. Because there is a gap between layers of corrugated cardboard, buffering capacity increased, but more likely to be all broken, so the layers of cardboard boxes bursting strength and the result then multiplied by the coefficient of 0.95 was obtained in line with the actual situation. Independent of bursting strength and corrugated layers. Partly because the bursting strength of corrugated cardboard layer is lower than that of many, partly because the bursting strength is static burst strength, corrugated larger buffer layer, thus greatly reducing its bursting strength, so that negligible.