These pages answer many of the questions that are often asked about film properties, including:

How is the property measured?
What is the test method reference? (ASTM or internal)

We also dicuss when and why the property is important. In short, we have tried to design a clear and reader-friendly resource about the properties used to characterize ExxonMobil Chemical flexible packaging films.

The discussion about each property follows the same format:        - Title, which states the property name.                                                          - Test methods, which lists the ExxonMobil Chemical test procedure(s) number(s) and the related industry standard test method(s).                            - Definition section contains a brief, but precise, overview of what measurement is and its units.                                                                            - Test principles section, which illustrates the basic test. Key differences between the industry standard test method and the ExxonMobil Chemical test method are explained here.                                                         - Related terminology, which defines industry terms are associated with the property or that were used in the body of the discussion.