What is the Density - What is density??

A measure of the weight of paper and other materials defined as the mass per unit area Paper density is a form of area density where traditional density measures the mass per volume of an object paper density is calculated using the surface area of a material usually when that material has been produced or cut to a standard size Paper density is commonly expressed in grammage which measures density as grams per square metre In labelling it is important to know the weight of the materials used to make label products and the overall weight of the finished label product as heavier sheets may not feed correctly through some printers

Glossary

Apparent - What does apparent mean?

Definition of APPARENT:

In materials, some specifications may be given as “apparent” values, such as the apparent density or apparent whiteness of a material. These values are usually calculated using other measurements (that can be taken accurately or more accurately than is possible for the “apparent” values) to provide an approximate measurement. For example, it is impossible to give the precise density of a sheet of paper as the density will fluctuate across the sheet so the “apparent density” of the sheet is calculated by dividing the basis weight of the sheet by its caliper. Similarly, the whiteness of a material is an optical property and will be influenced by many factors, including the fact that perception is subjective and the perception of light of all colours will vary from person to person.

A micrometer being used to measure the caliper, or thickness, of a sheet of paper; the basis weight of the sheet can be divided by the caliper to give the apparent density.

Here is the Harvard-style citation to use if you would like to reference this definition of the word apparent:
Label Planet (2020) What does apparent mean? | Apparent Definition. Available at: https://www.labelplanet.co.uk/glossary/apparent/ (Accessed: January 1, 2024).

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