18 ANDRITZ


Pulp Paper & Logistics


The PrimeLineCOMPACT tissue machines run at up to 1,900 metres per minute 3


iron Yankee of the same size. “Steel Yankees have an


evaporation rate 10-15 per cent higher than cast iron, which results in 8-10 per cent better throughput,” Okunishi says. “Steel Yankees are considered safer than cast iron due to the elasticity of the steel. We use state-of-the-art manufacturing methods to ensure safety and quality.”


COMPACT solution “During the tender phase for the new tissue machines, we had a lot of constructive discussions with ANDRITZ engineers, and they proposed various possibilities to improve our production efficiency,” Kurosaki says. “We consider ANDRITZ to be a reliable supplier.”


ANDRITZ supplied two identical PrimeLineCOMPACT tissue machines with Steel Yankees. For the new recycled fibreline,


March/April 2017


ANDRITZ also delivered two Speed Washer units and a CompaDis disperser.


The 2.8m-trim ANDRITZ machines, TM1 and TM2, have maximum design speeds of 1,800 m/min. They are equipped with PrimeDry Steel Yankees having diameters of 15 feet (4.57m). The machines produce high-quality tissue from recycled fibre for the production of core and coreless toilet paper rolls and facial tissue paper. The coreless tissue roll is a patented design developed by Shin-Ei Paper. According to Toshio Okunishi, the PrimeLineCOMPACT machine design is ideal for customers who appreciate a standardised, modular approach. “The idea behind COMPACT is


to combine cost efficiency with proven quality,” he says. “The key to its cost efficiency is the level of standardization, which reduces


engineering hours, manufacturing hours, installation time, and even transport costs. COMPACT ensures a certain production quantity and high quality in a streamlined, cost- effective package.” The highlights of the twin PrimeLineCOMPACT machines at Shin-Ei Paper are the fully automated raw material handling and the Steel Yankees with head insulation to conserve energy. For each machine, a single layer headbox feeds stock to a PrimeForm CrescentFormer that has a very high dewatering capacity. Whitewater flow from the former is controlled by special guide vanes so that the energy of the water jet is broken outside the machine. This improves the web section’s housekeeping. The press section consists of a single suction press to dewater while maintaining high product quality. Beginning at the creping


doctors, the sheet run is equipped with threading and sheet support equipment. Head insulation around the Steel


Yankee conserves thermal energy during the production process. Potential steam savings is in the range of 2-5 per cent. In addition to energy savings, the insulation produces less contamination due to its even surface.


A new kind of ‘converting’ The raw material for the mill is sourced from urban areas within 150 km of Fuji such as Tokyo, Nagoya, and Niigata. “Of course we prioritise neighbouring areas when collecting waste paper,” Kurosaki explains. “These are mainly collected by third-party companies, but we pick up papers containing potentially sensitive information ourselves from local governments, because we have the clearance to do this work.


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