To calculate the Blow Up Ratio (\(BR\)):
\[ BR = \frac{Df}{Dd} \]
Where:
A blow up ratio is a term used in blown film problems to describe the ratio of the final tube diameter to the die diameter.
Let's assume the following values:
Using the formula:
\[ BR = \frac{1.5}{0.5} = 3 \]
The Blow Up Ratio is 3.
Let's assume the following values:
Using the formula:
\[ BR = \frac{2}{0.8} = 2.5 \]
The Blow Up Ratio is 2.5.