Paper ring pressure intensity refers to the sample of a certain size in the sample seat to form a circular shape. Pressing between the samples, the ZUI that can bear before the sample is crushed. The intensity of the ring pressure indicates the performance of the stress on the edge of the cardboard, which is an important strength indicator of the boxboard and corrugated original paper.
The instrument required for the ring pressure strength of the test paper:
Main equipment: ring pressure test machine
Ring pressure edge pressure test machine HD-A513-2
Combined with the device: ring pressure center disk compression sampling devicering pressure strength: R f/152
[[ In the formula:
r represents ring pressure strength, unit KN/m;
f is the force value read when the sample pressure is collapsed, unit n;
152 is the length of the sample, the unit MM. The average ring pressure strength is reported to 0.01kn/m.
ring pressure index: rd 1000r/w
In the formula: RD indicates the ring pressure index, unit n middot; m/g;
R represents the ring pressure strength, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit unit, unit, unit kn/m;
W is the quantitative of the sample, unit G/M2 (square square)