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STATISTICAL PROCESS CONTROL: FRICTION-SLIDE ANGLE
Provider: TAPPI
Shipping: Available for download - Link will be provided in My ComplianceOnline section
Shipping: Available for download - Link will be provided in My ComplianceOnline section
Price:
$35.00
Product Details
Friction of corrugated board ensures that boxes made from that board will not
slip from a load. Some newer methods of material handling rely on a certain
friction between the boxes, so it is important for the boxmaker or his
linerboard supplier to control the amount of friction. The angle of inclination
at which one box on top of another will just begin to slide is a measure of the
coefficient of static friction between the two surfaces of the two boxes in
contact. Derivation will show that the coefficient of friction is equal to the
tangent of the angle of inclination from the horizontal. The coefficient, hence
the angle itself, is independent of the force applied between the two surfaces.
Therefore, the coefficient of friction or slide angle is not dependent on the
weight of the box and its contents.
The test covered in this technical information paper was devised to measure
the coefficient between two box surfaces. It can also be used to measure the
coefficient of friction between two paper surfaces prior to fabrication of the
box. The test can be applied to linerboard before corrugating, to corrugated
board after combining, and at any point up to and after box fabrication.
Subsequent treatment, rubbing, or abrasion of that surface can alter the
coefficient significantly. This is especially true if frictionizing materials
have been applied to the surface. Subsequent processing could remove the
frictionizing material, thereby lowering the coefficient.
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