Screw caps


Use the calculator model to estimate what percentage of the target group in the Danish population will be able to open a screw cap with the stated dimensions. Try inserting different dimensions and forces. See the difference.


NB: Be sure only to use this calculation as a guideline when choosing dimension and opening force needed as the model is based on a limited set of data.


This is how you calculate how many people will be able to open

  1. Fill in the blanks with outer diameter for the screw cap and the mechanical force needed to open the it (see mechanical test).
  2. Read the percentage of women and men who are able to open the screw cap depending on their age



See the effect of different size screw caps being designed >>





See calculation models for other types of packaging >>