# Blow Up Ratio Calculator

Do you want to know, how to calculate the blow up ratio in film extrusion? Check our Blow Up Ratio Calculator, It is a handy tool that helps you determine the relationship between the final tube diameter and the die diameter. Enter the specific values into the calculator, you can quickly find the blow up ratio, final tube diameter, or die diameter.

### How to Use the Calculator

Using the Blow Up Ratio Calculator is straightforward. Follow these steps:

**Enter Final Tube Diameter**: Input the final tube diameter into the calculator to find the blow up ratio or die diameter.**Enter Die Diameter**: Enter the die diameter into the calculator to find the blow up ratio or final tube diameter.**Enter Blow Up Ratio**: Fill in the blow up ratio to find either the final tube diameter or die diameter.

**Example Values**

**Final Tube Diameter**: 120**Die Diameter**: 60**Blow Up Ratio**: 2

### What is Blow Up Ratio?

The Blow Up Ratio (BR) is a key parameter in the film extrusion process. It measures how much the diameter of the tube has increased from the die to the final product. It’s calculated using the formula:

$\text{BR}=\frac{\text{Df}}{\text{Dd}}$

### Variables

Variable | Description |
---|---|

BR | Blow Up Ratio |

Df | Final Tube Diameter |

Dd | Die Diameter |

## How To Calculate Blow Up Ratio

### Example 1

Given Values:

**Final Tube Diameter (Df)**: 150**Die Diameter (Dd)**: 50

**Calculation**:

**Formula**: $\text{BR}=\frac{\text{Df}}{\text{Dd}}$**Substitute Values**: $\text{BR}=\frac{150}{50}$**Calculate**: $\text{BR}=3$

**Result**: The Blow Up Ratio is 3.

### Example 2

Given Values

**Final Tube Diameter (Df)**: 200**Blow Up Ratio (BR)**: 4

**Calculation**:

**Formula**: $\text{Dd}=\frac{\text{Df}}{\text{BR}}$**Substitute Values**: $\text{Dd}=\frac{200}{4}$**Calculate**: $\text{Dd}=50$

**Result**: The Die Diameter is 50.

Thank you for using the tool,.