Editing Calender (section)

==Other materials==
[[File:Calender machine.jpg|thumb|Calender rolls for milling and mixing rubber]] 

Calenders can also be applied to materials other than paper and textiles when a smooth, flat surface is desirable. 

Polymers such as [[Polyvinyl chloride|vinyl]] and [[Acrylonitrile butadiene styrene|ABS]] polymer sheets, and to a lesser extent [[HDPE]], [[polypropylene]] and [[polystyrene]], are calendered.

The calender is also an important processing machine in the rubber industries, especially in the manufacture of tires, where it is used for the inner layer and fabric layer.

Calendering can also be used for polishing, or making uniform, coatings applied to substrates- an older use was in polishing magnetic tapes, for which the contact roller rotates much faster than the web speed.  More recently, it is used in the production of certain types of secondary battery cells (such as spirally-wound or prismatic lithium-ion cells) to achieve uniform thickness of electrode material coatings on current collector foils.