@inproceedings{4d7d9f77e9874d54992995de9ebfd837,
title = "CD profile measurements and paper runnability",
abstract = "The web tension profile of the paper across the web with its variation during the run has been found to be a good indicator to estimate runnability. A long-term study has been carried out on a rotogravure press where the web tension profiles of over 5,500 reels were measured automatically at the reel stand. The measurements showed the importance of an even web tension profile to runnability. Methods for adjusting the web tension are outlined. Some web tension measuring equipment tested on a production scale are discussed here. The shape of the web tension profile of the reels originates in the paper mill. The strongest variations in the tension were found in the surface layers of the reel. The principal problems with runnability problems were web breaks and register errors which increased paper waste and decreased production efficiency. Most of the web breaks occurred after the printing units when the web was cut into narrow strips. The critical features of web tension were calculated and used to compare different paper grades. The results indicated that most web breaks occurred and more paper waste was produced when the tension was extremely low or high in some areas, or if the tension varied across the web.",
keywords = "web tension profile, paper, runnability",
author = "Timo Kaljunen and Markku Parola and Hannu Linna",
year = "1997",
language = "English",
isbn = "978-952-5183-05-4",
volume = "10B",
series = "Acta IMEKO",
publisher = "Suomen automaatioseura",
pages = "8--13",
editor = "Jouko Halttunen and Nyberg, {Timo R.} and R.K. Ritala",
booktitle = "New measurements, challenges and visions",
address = "Finland",
note = "XIV IMEKO World Congress : New Measurements - Challenges and Visions ; Conference date: 01-06-1997 Through 06-06-1997",
}