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Secondary Quality Characteristics

This chapter discusses how the functions required of a packaging material have led to a set of quantitative material tests that help to predict the ability of the material to perform as required by a customer. Some of these tests are described here in the context of necessary package functionality. Although such tests have a basis in the materials engineering properties of component substrates, these secondary measures reflect test specimen geometries and units of measure that align with the commercial realities for the package. Such tests can be used as the quantitative basis for specifying flexible packaging material between buyer and seller, but in doing so, all parties should be aware of the inexact fit ...

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