Packaging Container Structural Design and Manufacturing - Paper Containers (10)

Section IV Corrugated Box Strength Design

It is an important indicator for evaluating corrugated boxes and an important condition for designing corrugated boxes.

First, the compressive strength

1. Compressive strength refers to the maximum load and deformation when the pressure tester uniformly applies dynamic pressure to the box.
To correctly evaluate the compressive strength of corrugated boxes, include the following aspects:
a. The maximum load;
b. The amount of deformation;
c. Deviation of test value.

2. Factors affecting the compressive strength of corrugated boxes 1 Basic factors
a. Strength of base paper - Ring pressure strength (RCT) or corrugated core flat pressure strength (CMT) of inner paper, outer paper, and corrugated medium paper;
b. Corrugated type - A, B, C, E;
c. Types of corrugated board - double-sided, double-sided double-sided, three-core dual-demand, X-PLY, etc.;
d. Corrugated board moisture content;
e. Other influences of the external environment in the circulation field.

2 variable factors
a. box size ratio;
b. Printing area and printing design;
c. Opening area and opening location;
d. Manufacturing problems of the carton;
e. The defects of the box making machinery;
f. Quality management issues.

3, calculate the compressive strength of corrugated carton According to the corrugated cardboard base paper, that is, the test strength of the paper and the core paper to calculate, and the other is directly based on the corrugated board test strength calculation.