Liansheng Pulp & Paper PM 1 carton board line and PM 3 high-grade fine paper line

PM 1 high-speed carton board line, from broke collection to a reel and winders

• Valmet Conical Refiner Conflo refiners
• Three OptiFlo Fourdrinier headboxes
• OptiFormer Multi forming section with multiple Fourdriniers
• OptiPress Linear press section
• OptiRun hybrid dryer section with single- and double-fabric groups
• Process ventilation including OptiAir Hood high-humidity hood, OptiAir Recovery heat recovery, OptiAir Environment for controlled machine hall environment, and TurnFloat for for contactless web turning
• OptiSizer Film sizing section
• Four OptiCoat Jet coating stations followed by a number of OptiDry coating air drying units, and OptiDry Chill web cooling
• OptiCalender Hard and OptiCalender Soft calendering
• OptiReel Linear reeling
• OptiCart Stream parent roll handling with Transfer Rails
• Two OptiWin Drum two-drum winders

PM 3 high-speed, high-grade fine paper line, from broke collection to a reel and winders

• Valmet Conical Refiner Conflo refiners
• OptiFlo Gap headbox
• OptiFormer Gap forming section with shoe and blade technology
• OptiPress Linear press section
• OptiRun hybrid dryer section with single- and double-fabric groups
• Process ventilation including OptiAir Hood high-humidity hood, OptiAir Recovery heat recovery, OptiAir Environment for controlled machine hall environment, and TurnFloat for for contactless web turning
• OptiSizer Film sizing section
• OptiCalender Hard calendering
• OptiReel Center with center driven reel
• OptiCart Stream parent roll handling with Transfer Rails
• Two OptiWin Drum two-drum winders

The deliveries for both machines also include a wide range of automation solutions, with a Valmet DNA automation system for machine controls, as well as runnability and condition monitoring, web monitoring and web inspection systems, and a Valmet IQ quality management solution. The delivery for PM 3 was further complemented by Valmet RM 3 retention measurement and a Valmet WEM wet end analyzer. The deliveries also included comprehensive flow control solutions, Valmet Paper Machine Clothing, spare parts and consumables packages.

In May 2023 the carton board production line PM 1 was operational half a month ahead of schedule. The machine was successfully started up on May 1, and sellable A-grade carton board was produced three days later. Ten days later, the product was placed on the market, and customers highly appreciated the paper’s bulk and flatness. The speed at which the production and quality of the carton board was achieved exceeded downstream customers’ expectations.

A month later the high-grade fine paper production line PM 3 was also successfully started up. Sizing was successful on the first day and all the produced fine paper passed quality inspections very early on. Customers are very satisfied with the uniformity, smoothness, and even two-sidedness. At the same time, PM 3’s start-up curve is exemplary: The average speed in October 2023 was 1,650  m/min, with a production of 50,100 tonnes, and the current speed (as of November 2023) has reached 1,708  m/min.