b'TraditionalFollowing the introduction of TailBlade, runnabilitythe company focused on developing control withropeless solutions for the sizer and reel, increasedtoo. After that, it was time to improve tail draw notthreading in the single-felted sections. only reducesTo complement its product portfolio, sheetRuntech Systems acquired EV Group strength andand its web stabiliser business in 2017. quality, butWeb stabilisers, pocket ventilationFigure 2. also easilyand machine geometry modificationsTailBlade causeseliminate runnability problems, ensuretechnology is very a fluent papermaking process andefficient in double breaks felted section tail enable easy tail threading.threading.ENSURING EXCELLENT RUNNABILITY IN THE FIRST SINGLE-FELTED GROUPSThis can lead to sheet fluttering,increased draw not only reduces The first single-felted groups are verybreaks, complicated tail threading andsheet strength and quality, but also sensitive to run, especially in high- paper quality problems, such as edgeeasily causes breaks in the dryer speed paper machines. Still very wet,flipping or wrinkles. Without high- section, finishing processes andthe web can stretch and break easily.vacuum support, the wet web tends tolater in printing presses, too. A high Moving surfaces, like cylinders, rollsfollow the upper cylinder, resulting indraw difference means additional and drying fabrics, cause air flows andbreaks and paper defects. raw material costs, as morepressure differences, especially in thechemical pulp is required to improve nips, reducing dryer section runnability.Traditional runnability control withsheet strength. Figure 3. EasyOne web stabiliser with a special high vacuum area between the upper cylinder and the vacuum roll.WORLD PULP&PAPER 61'