1:00 – 5:00                                                                                               

Overview of Corrugating                                                                                                 J. Porter, Fosber America
Overview of Tests & Properties                                                                                     M. Kocurek, N.C. State University
Overview of Pulp Mill Operations & Recycling                          
Overview of Stock Preparation
Overview of Paper Machine Operations
 
 Day 1  Tuesday,  August 5
      8:00 – 8:45       Welcome, Introductions,  Networking, Learning Objectives
      9:00 – 12:00     The Corrugating Process (overview of equipment/operations & focus on how to improve bonding between the liner and medium)

•  Double-Wall Corrugator Wet End Summary                                                   J. Porter  
  Identify main components of a Corrugated Web: Liner, Medium, Adhesive 
  
  
• Lay-out of Equipment (Numbering/Stations)                        
  Single-facer #1 
  Double-face
  Double-facer Liner Splicer (position 1)
  Double-face Liner rollstand (position 1)
  Pre-heaters 

• Optimizing Bonding in the Corrugator                                                            
  Application step
  Wetting and Penetration step  
  Gelatinization & Green Bond steps
  Evaporative Bond - Wetting/Penetration (DF) steps            
  Gelling & Green Bond for Pressure Bond (DF) steps
  Drying/Fully Curing step 
  
  
•  Liner & Medium Properties Affecting Corrugating            

                                                               
12:15 – 1:00      LUNCH
 
 
1:00 – 1:45   Developments in Printing & Demands on Linerboard                C. Klass, Klass Associates       

              Digital printing of containerboard
                  High speed pigmented ink jet
                  Surface quality requirements

2:00 – 5:15  Linerboard & Medium Properties & Tests                                 M. Kocurek
            Sheet Structure & why it’s important                                                                   
                 MD/CD Fiber Orientation, Formation

             Properties & Tests                                                                                                                       
                  What they are telling us, and what contributes to their values

                        Printability, Smoothness, Porosity
                        Liquid Absorption, Sizing tests, Cobb, Water drop, etc
                        Stiffness, Ring Crush, Mullen, Concora
                        Edgewise Compression Test, Short Span Compression (STFI)
                        Tensile, Modulus, Stretch 
                        Moisture & Humidity Effects on Performance Properties 
                        Causes of  Curl, Warp, & Wash Boarding
                        Viscoelastic Creep Failure of Boxes
                        Adhesion              

Note – Board testing videos will be shown after class adjourns.

 5:15   Adjournment

Day  2: Wednesday, August 6

7:45 – 9:00 Improving Performance I : Fiber Raw Materials,  Pulp Properties                               

• Fiber Properties & Effects on Sheet Structure 
• Pulping Processes for Liner & Medium – Common Pulp Quality Problems         M. Kocurek

9:10 – 10:30  Improving Performance  II: Recycling Pulp & Challenges                    C. Klass          

• Recycling Processes for Liner & Medium – Common Pulp Quality Problems
• Stickies Removal      

10:40 – 11:30   Improving Performance III: Stock Prep Refining                                M. Kocurek             

• Refining mechanism
• Effects on sheet and properties
• Refining Measurements and Variables
• Improving Refining for Linerboard & Medium

11:30 – 12:00   Improving Performance IV: Chemical Additives  I                            D. Swales, Kemira           

• Alum Chemistry
• PH Control

12:00 – 1:00  LUNCH

1:00 – 3:30   Improving Performance IV: Chemical Additives  II                          D. Swales       

• Dry & Wet Strength                         
• Sizing
• Fillers
• Formation Aids
• Retention
• Wet End Chemistry Improvement

3:45 – 5:15   Improving Performance V: Wet End Operations      J. Shands, Paperchine

• Overview of Liner & Medium Machines                                                            
     Fourdrinier, Hybrid, Gap Formers                                                                                                                     

• Approach system
     Basis Weight Control Options
     Screening & Centrifugal Cleaning
     Deaeration
     Distribution Headers 
• Headbox Operations I
     Uniform Stock Flow in the Headbox
     Formation Improvement & Microturbulence Stratetegies
     Jet/Wire & MD/CD Orientation
     Headbox Crossflows & BW profile control
     Dilution, Layering Headboxes
     Structure CD, MD, Z Variations

5:15  Adjournment

Day 3: Thursday, August 7                                                                       

Improving Performance V: Paper Machine Wet End Operations    

 7:45 – 8:45    Headbox Optimization: TSI/TSO Analysis and Case Studies                                                    Per–Olof Warandh, L&W       

9:00-11:00   Sheet forming
   Fourdrinier Table Operations
   Twin Wire Forming, Jet Entry & Dewatering Operations  

11:00-12:00     Pressing                                                                                                R. Phillips, Asten - Johnson    
   Mechanism of Water Removal
   Effect on Sheet Properties
   Shoe Pressing & other developments                                                   

12:00 – 1:00   LUNCH    

1:00 – 2:00   Improving Performance VI: Pressing &  Drying Operations

   • Pressing (continued)                                                                             R. Phillips     
         Mechanism of Water Removal
         Effect on Sheet Properties
         Shoe Pressing & other developments

 • Drying                                                                                                       M. Kocurek   
         Strength development and shrinkage mechanisms
         Moisture variation effects and control
         Effects on liner & medium sheet and properties                             

                                                         

2:00 – 3:30   Improving Performance VII : Forming, Wet Press, Dryer Fabrics                        

• Selection criteria, Design developments                                                D. Wells
• Runnability performance criteria                                                           R. Phillips
• Effects on Liner/Medium Quality                                                          
• Case studies

3:45 – 5:15   Paper Machine Operations VIII : Size Press & Other Surface Treatments 

• Size Press                                                                                                C. Klass
  Variables affecting pick up
  Developments in Size Press                                                                            
  Surface Treatment Chemicals & Coatings to Improve Linerboard 

• Calendering 
• Winding Comments                                                                                              

5:15  Wrap up,  Turn In Evaluations,  Pick Up Certificates, Adjournment