How is glassine made?

Glassine is a paper product made to be resistant to grease, air, and water. It is made through a process called calendering. Glassine is made by breaking down paper pulp fibers. This beaten pulp is then squeezed into molds and set to dry into sheets. These sheets are then rolled through hot rollers. This is calendering. Calendering makes the plup fibers in the sheet lie flat and in the same direction. Glassine is known as supercalendered paper. This is because it goes tough the calendering process multiple times. The final product is a extreamly smooth paper which can be used as barrier protection from many kinds of gease, air, and liquids.