Enter the original length of the plastic and the shrinkage percentage into the calculator to determine the final length after shrinkage. This calculator helps in predicting the dimensional changes in plastic materials after they undergo the manufacturing process.
Plastic Shrinkage Formula
The following formula is used to calculate the final length of plastic after shrinkage.
FL = OL - (OL * (SP / 100))
Variables:
- FL is the final length of the plastic (mm)
- OL is the original length of the plastic (mm)
- SP is the shrinkage percentage (%)
To calculate the final length of plastic after shrinkage, subtract the product of the original length and the shrinkage percentage divided by 100 from the original length.
What is Plastic Shrinkage?
Plastic shrinkage refers to the reduction in dimensions that occurs when plastic cools and solidifies after being molded. The shrinkage percentage is influenced by the type of plastic, the molding process, and the cooling rate. Accurately predicting shrinkage is crucial for the manufacturing of plastic parts to ensure they meet the desired specifications and fit properly in their intended application.
How to Calculate Plastic Shrinkage?
The following steps outline how to calculate the final length of plastic after shrinkage.
- First, determine the original length of the plastic (OL) in millimeters.
- Next, determine the shrinkage percentage (SP) that the plastic will undergo.
- Next, gather the formula from above = FL = OL – (OL * (SP / 100)).
- Finally, calculate the final length (FL) of the plastic in millimeters.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Original length of the plastic (OL) = 200 mm
Shrinkage percentage (SP) = 2%
