Calculate maximum weight box can hold

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SUMMARY

The discussion focuses on calculating the maximum weight a cardboard box can hold based on the tensile strength of the tape used to seal it. Key factors include the tensile stress formula, which is defined as force divided by area, and the importance of the adhesive strength of the tape. The consensus is that the tape's adhesive quality is critical; a strong tape with a weak bond will fail. A practical method suggested is to tape the box shut and incrementally add weights until failure occurs to determine the effective strength of the bond.

PREREQUISITES
  • Understanding of tensile strength and tensile stress
  • Basic knowledge of adhesive properties
  • Familiarity with experimental methods for testing material strength
  • Ability to measure weight accurately
NEXT STEPS
  • Research methods for measuring adhesive strength of tapes
  • Learn about tensile strength testing procedures
  • Explore material properties of different types of tape
  • Investigate safety protocols for conducting weight tests on sealed boxes
USEFUL FOR

This discussion is beneficial for engineers, product designers, packaging specialists, and anyone involved in testing the structural integrity of packaging materials.

type47
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hi,
This is probably very simple issue, but i am not an engineer nor have an understanding of basic physic... I need to calculate if the tape used to connect (sealed) to ends of the cardboard box will withstand the weight of the product i put inside it. I have a tape properties (tensile strength etc.). i just don't know how to calculate maximum weight i can put inside.
Can anyone help please?
Thank you very much
 
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the force on the tape is the weight of the object in the box

tensile stress = force / areaHowever, the tensile strength of the tape is not the determining factor!

How good is the glue. A very strong tape weakly bonded will fail.
 
Thank you William. So if I could measure somehow how strong is the tape when glued on the cardboard that should give me an indication on how strong is the glue right?
 
yes, if this is an experiment you could do that.

Tape the box shut, and incrementally add weights until the tape failed. That will give you a sense of the strength of the bond
 

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