Toggle main navigation Section navigation About Us References Board and paper references From wet pressing to sustainability in Siam Kraft board mill CUSTOMER CASE: Solving shadow marking issue and reaching sustainability targets at SCGP Siam Kraft As is typical of mills producing printed grades, such as coated duplex containerboard, Siam Kraft has been suffering from shadow marking in their PM9 press section. This was also preventing the mill from achieving their sustainability goals due to the excessive consumption of working fibers, chemicals, other raw materials and energy. Consequently, this resulted in higher operating costs and shorter roll change and maintenance intervals. The marks on the paper can be either a physical impression or a flow pattern, which can appear as a shadow or groove mark” Yutthapon Sittiwatjana, Paper Technology Manager, Valmet SUMMARY Location SCGP’s Siam Kraft board mill in Kanchanaburi Province, Thailand Customer challenge(s) The mill wanted to solve shadow marking issue, increase roll maintenance intervals and meet their goals for sustainability, cost-effectiveness and the circular economy. Solution Valmet’s Laem Chabang Service team planned and executed a three-step plan: Step 1 A water balance study was performed and it revealed that the press section water removal was adequately managed by nip and uhle box dewatering. The source of the shadow marking was identified as the suction press center roll. Step 2 Based on Valmet Wet Pressing solutions, the roll cover of the suction press roll was redesign with Valmet Press Roll Cover PK for lower nip pressure and optimized nip uniformity. Step 3 The vacuum system study was carried out and result indicated that the existing system had sufficient capacity to handle the process in a broad range. Results The problem with shadow marking was solved Consumption of virgin fiber reduced from 24 to 19 gsm and total fiber consumption reduced Board quality improved Calender roll grinding intervals increased from 30 to 40 days Maintenance reliability improved Keywords Board and Paper, Containerboard, Improvements, Rolls, Asia-Pacific The total fiber consumption has decreased, while quality and maintenance reliability have improved READ MORE ABOUT THE CASE From wet pressing to sustainability in Siam Kraft board mill DOWNLOAD VALMET PRESS ROLL COVER PK FLYER Valmet Press Roll Cover PK flyer Pulp Complete pulp mills Chemical pulping Wood handling Cooking and fiber line Pulp drying and baling Chemical recovery Air emission control New value-adding processes Dissolving pulping Mechanical pulping Recycled fiber Automation for pulp Services for pulp Fiber Technology Center Pulp references Pulp news and stories Board and paper Recycled fiber Stock preparation Board and paper machines Services for board and paper Automation for board and paper Industrial Internet Service Centers References Board and paper news and stories Search for products & services Tissue Complete tissue mills solutions Machine sections and rebuilds Development and pilot trials Services for tissue producers Automation for tissue References Industrial Internet Tissue Talks Insight Sustainability Learning services Tissue News Tissue Talks Contact Tissue Local websites 中文 - Chinese Suomi - Finnish Français - French 日本語 - Japanese Português - Portuguese Pусский - Russian Español - Spanish Svenska - Swedish ไทย - Thai Australia & New Zealand North America Deutsch - German Energy Energy solutions BFB Boiler CFB Boiler Gasifier Power plants Heating plants Air emission control Industrial Internet solutions Services for energy Automation for energy Technology development Energy news and stories More industries Alternative fuels Biofuels and biomaterials Chemical industry Fiberboard Filtration Food industry Laundry industry Marine Minerals and metals Nonwovens Oil and gas Wastewater Paper converting Pharmaceutical industry Petrochemical industry Automation Distributed control system Industrial applications Quality management Analyzers and measurements Condition monitoring Industrial Internet Automation projects Automation services About Us Valmet in brief Contact us Strategy Management Code of Conduct Careers Research and development Procurement Valmet's value creation Translate Valmet product names Industrial Internet Valmet Customer Portal Learning Services Service centers References Investors Valmet as an investment Reports and presentations Sustainability for investors Valmet share Shareholders Governance Financial information Events and calendar Investor relations Sustainability Sustainability at Valmet Sustainable supply chain Health, safety and environment People and performance Sustainable solutions Corporate citizenship Climate program Circular economy Sustainability reporting Media News Articles Customer magazine Blogs Podcasts Newsletters Social media Events calendar Media contacts Image gallery Video gallery Downloads Services Services for board and paper production Services for pulp production Services for tissue making Services for energy FOLLOW US Sitemap About this site Legal notice Trademarks Privacy notice Cookie preferences Contact us Social media © 2021 Valmet We use cookies and 3rd party solutions to optimize site functionality and give you the best possible experience while browsing our site. 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