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You are here: opti-pack > E3: Design Protection against Compression

E3: Design Protection against Compression

As almost all engineering formulas you only get a prediction as you can se of following tests made in different kind of corrugated and different box sizes.

Corrugated ECT in N/m

  • A = 6130
  • B = 5450
  • C = 6130
  • D = 8910

 

Corrugated

L x W x H in mm

Mc Kee in N

Measurement in N

A

200x200x200

1672

2250-2900

A

400x400x400

2466

3100-3650

B

400x200x200

2406

2150-2500

C

200x200x200

2006

2300-2750

C

400x200x200

2709

2600-3100

C

400x400x200

2886

2800-4000

C

400x400x400

2506

3100-4000

D

400x400x400

5339

6200-7600

Typical Mc Kee’s formula gives a pessimistic result. But you also see cases of measurements lower than predicted in the formula.

IMPORTANT!

Corrugated is as many other packaging materials produced under large variations. Alone the ECT on the same production batch can vary +/- 30% around average.

 

 

/TAB