to give a high polish to
To calender paper extensively until very glossy.
Alternating steel and fiber-covered calender rolls that increase a sheet's gloss and smoothness. The supercalender is a separate piece of equipment located close to the dry end of the paper machine.
supercalender 1. A calender with a number of rollers for giving a high finish or gloss to paper. 2. To process (paper) in a supercalender.
a roll or set of rolls for giving a high, smooth finish to paper.