Patent ID: 9587355
Date: 2017-03-07
CPC Classifications: D21H

Claim:
1. A method of manufacturing glassine paper comprising following successive steps of producing paper in a paper machine by forming a paper web in a forming section of the paper machine and drying the web in a press section of the paper machine and in a pre-drying section of the paper machine; applying film-forming product on both sides of the web in the paper machine; removing moisture from the film-forming product applied to the web in an after-drying section of the paper machine wherein moisture CD profile of the web is controlled by transferring heat adjustably in a CD direction while drying the web; passing the web having film-forming product through an on-line calendering process in a calendering treatment section of the paper machine, the on-line calendaring process comprising successive nips in at least one multi-nip calender where the CD thickness profile of the web is controlled and a density and a transparency of the web is increased; and reeling up the glassine paper in a reel-up of the paper machine.