To calculate the bursting strength of 5 ply corrugated board, the ability to hold weight must be tested first. The bursting strength would be the amount of weight the board can hold before breaking.
Other paper products usually like cereal boxes
Corrugated Board - Ring Crush Test : Ring Crush is a traditional test of linerboard and corrugating medium strength. Ring crush measures compression resistance, and this compression strength is considered to relate to the eventual compression strength of combined board made from the component. Linerboard called high strength or high performance linerboard is board that is able to achieve a specified minimum ring crush at basis weights that are lower than traditional basis weights. Corrugated Board - Concora Crush Test : The Concora Crush Tester performs a series of tests to determine the rigidity and crush resistance of corrugated material. It is used in conjunction with the Concora Liner Tester. The first test measures the flat crushing resistance of a laboratory-fluted corrugated material. The second test determines the edgewise strength, parallel to the flutes, of a short column of single-, double-, or triple-wall corrugated board. The third test evaluates the ability of corrugated material to contribute to the compression strength of a corrugated box by measuring the edgewise compression strength of a laboratory-fluted strip of corrugated material in a direction parallel to the fluted tips. Corrugated Board - Flat Crush Strength : The flat crush test is a measure of the resistance of the flutes in corrugated board to a crushing force applied to the surface of the board under prescribed conditions. Flat crush is a measure of the flute rigidity of corrugated board. A high flat crush value indicates a combination of good flute formation and at least adequate strength medium. Low flat crush may indicate a number of conditions including low strength medium, leaning flutes and crushed flutes.From: http://www.thaicorrugated.com/knowledge.php?cid=30
You can iron the crushed paper if you want to save it.
56/23/35/23/35 it will vary depending on the board you carry, like medium can be 26.
There is one i know of and that's paper board but I'm not sure about any others ^_^ Grey board
Bending stiffness and Edge crush test values of corrugated board can be correlated to Box crush test values. The Box crush test is one of the values directly used by the engineers in the industry for shipping requirements. SO THIS: "bending stiffness is a basic property of corrugated board it is not limited to single ply or double ply" Bending stiffness is measured using either 2 point, 3 point or 4 point bending stiffness measurement method.
card that is corrugated
Corrugated Box manufacturer
Yes. Anything could be used as a musical instrument.
Why Corrugated Box Industry is growing? You can see the example of corrugated box manufacturers..
"Corrugated tubes can be used for storage, but largely, corrugated tubes are used for shipping." A lot of corrugated tubes are used to store and ship posters and other artwork.