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STOCK PREPARATION & PAPERMAKING

Stock Preparation, Papermaking & Paper Recycling division is an important division which caters to the R&D needs of Indian paper industry in the area of Papermaking & Paper Recycling. The division is well equipped with state-of-art equipments to carry out research work leading to technology development, troubleshooting programs, optimization of existing processes and development of new products in addition to addressing issues related to paper machine runnability and first pass retention. The division has also strengthened its capability through creation of state-of-art infrastructure and technical expertise to address the issues of Recycled Fibre (RCF) based industry.

  • Conduct applied research related to Stock Preparation, Wet end Optimization, Papermaking, Paper Recycling and quality improvement of finished products.
  • Execute Plan/ Cess funded projects in the area of paper recycling and papermaking.
  • Industry/ Mill specific sponsored projects.
  • Human Resource Development for Indian Paper Industry.
  • Conduct R&D work on optimization of wet end chemicals, improvement in FPR, FPAR and wet end optimization based on charge measurement.
  • Internal Sizing (Acid/ Neutral / Alkaline) and surface sizing.
  • Alkaline/neutral/enzymatic deinking and bleaching of Recycled Fibre Stock for technology adoption.
  • Quantification and control of stickies generation and accumulation in RCF stock.
  • Control of paper machine deposit formation employing Total Organic Carbon (TOC) measurement to assess microstickies and Dissolved Colloidal Material (DCM).
  • Application of enzymes, oxygen and ozone for quality up gradation of RCF stock.
  • Grading of indigenous recovered paper.
  • Performance evaluation and troubleshooting programs for mills in the area of wet end optimization, internal sizing, surface sizing and RCF processing and papermaking. 
  • Provide consultancy & technical services to paper mills, chemical suppliers, scrap dealers & overseas clients.
  • Establish mechanism to enhance recovery rate of indigenous recovered paper.
  • Execute contract/collaborative research programs with International R&D institutes. 
  • Information dissemination through organization of Seminars, Workshops and Training Programs.

Stock Preparation & Papermaking and Paper Recycling Division is well equipped with modern sophisticated instruments conforming to International Standards to conduct stock evaluation, wet end optimization, papermaking and quality evaluation work.

Stock Preparation & Papermaking

  • Quality improvement of paper 
  • Optimization of papermaking operations
  • Evaluation of pulps for papermaking potential
  • Evaluation of Papermaking chemicals
  • Evaluation of fillers
  • Optimization of internal sizing and surface sizing chemicals 
  • Fibre Strength Evaluation using Zero Span Tensile Tester (ZSTS)
  • Pulp Evaluation
  • Fibre Classification
  • Water Retention Value (WRV) of Pulp
  • Abrasion Testing of Fillers
  • Filler Retention and Characterization
  • Dry and Wet strength additives evaluation
  • Wet end Optimization based on electrokinetic properties (Zeta Potential, Cationic Demand/ Anionic Demand/ Streaming Potential)
  • Training of mill Personnel / Scientists / Engineers in specified areas

Paper Recycling

  • Unit Process Optimization for pulping, deinking and bleaching of Recycled fibre 
  • Evaluation of deinking chemicals and Stickies control agent
  • Cost effective deinking solution
  • Quantification of Macro/ Micro/ Colloidal stickies in process line and water recirculation loop through stickies audit/profiling across the process line
  • Bleaching and color stripping of RCF employing oxidative/reductive bleaching. 
  • Stickies balance across screens, cleaners and floatation cell to assess the removal efficiency 
  • Paper machine deposit control 
  • Provide technical know-how on enzymatic deinking and Neutral deinking 
  • Evaluation of Fibre quality of Market RCF pulp/ moulded trays
  • Recyclability potential of new grades of waste paper
  • Enzymatic deinking, Mineral deinking & Neutral deinking of RCF stock
  • Paper Machine deposit control through Total Organic Analysis (TOC) Technique

Stock Preparation & Papermaking

  • Laboratory Refiner – PFI mill
  • Freeness Tester (Canadian & Schopper Riegler)
  • Bauer McNett Fibre Classifier
  • British Sheet Former
  • Dynamic Sheet Former
  • KCL Type Automated Sheet Former
  • Automated Sheet Press
  • Particle charge and zeta potential measuring instruments for pulp stock, process water and chemicals
  • Fines and filler retention under dynamic condition
  • Filler Abrasion Tester
  • Britt Dynamic Jar
  • Zero Span Tensile Strength Tester (ZSTS)
  • Water Retention Value Analyzer
  • Laboratory Size Press
  • Pilot Coater
  • Laboratory Hard and Soft Nip Calendar

Paper Recycling

  • High & Low Consistency Hydra Pulper
  • Voith Flotation Cell 
  • Pulmac master Screen
  • Image Analyser for stickies quantification
  • Paprican Ink Scanner
  • Elrepho Brightness Tester 
  • Rapid Sheet Dryer
  • TOC Analyzer

Stock Preparation & Papermaking

  • Developed know-how and expertise on optimization of Wet end chemistry of mills based on charge measurement technique.
  • Developed packaging grade paper having antibacterial properties.
  • Evaluated various Pigment Dyes to study dye strength, color fastness and aging effect after exposure to sunlight.
  • Improved the quality of kraft liners and kraft papers by integrating refining with different chemical formulations to enhance RCT (Ring Crush Test) and BF (Burst factor).
  • Developed Barrier Properties with different surface sizing chemical formulations.
  • Developed Technical Know-how and expertise on filler loading, effective alkali/neutral sizing using PCC, GCC and soap stone powder. 

Paper Recycling

  • Acquired state-of-art facility for separation and quantification of macrostickies and hot melts in the recycled fibre stock. 
  • Developed integrated methodology for quantification of macrostickies/ microstickies/ colloidal stickies in RCF stock employing dynamic drainage jar, Pulmac Master Screen and DCM extraction techniques.
  • Successfully developed enzymatic deinking and oxidative deinking technology as an alternative to alkaline deinking for quality up gradation of RCF using enzyme, oxygen & ozone. 30-40% cost reduction achieved with enzyme deinking technology.
  • Developed technical know-how on application of floatation deinking for stickies removal in OCC furnish.
  • Conducted Stickies Audit and profiling of Macro/ Micro/ Colloidal stickies accumulation in Emami Paper Mills Ltd., Balasore, Shree Rama Newsprint Mills Ltd., Surat, ITC Kovai, Coimbatore and Khanna Paper Mills, Punjab.

Project Undertaken

  • Development & demonstration of electroflocculation process on pilot scale for reduction of color from bleach effluent and agro-residue black liquors for CPCB.
  • Understanding & Control of Pitch & Deposits in Papermaking CPPRI-CTP (France) collaborative project.
  • Comparative study of properties for Used Beverage Cartons (UBC), UBC India, AOCC & IOCC and their fiber potential in papermaking - Fiber Pattana Co. Ltd; Thailand.
  • Pre-feasibility studies on Deinking of Currency broke for Security Paper Mill; Hoshangabad (M.P.).
  • Evaluated Used Beverage Cartons for its fiber potential in papermaking for Tetra Pak India Pvt. Ltd., Gurgaon.
  • Evaluated various post consumer waste (tea cartons, soap wrapper, etc.) for its repulpability and papermaking potential in comparison with Indian OCC and American OCC for Unilever Industries Pvt. Ltd., Mumbai.
  • Repulping study of the broke generated during manufacturing of Bank Note Paper for Bank Note Paper Mill; Mysore.
  • “Achievement of highest brightness and whiteness in paper in a cost effective manner through selective addition of OWA at wet-end and size press” - Cess Funded Project.