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Seminar on Coating and Drying Technology

Below is an example of a typical outline for a coating seminar directed to operators, technicians, mechanics and foreman. They can be customized to fit the needs of your organization.
Seminar Outline




(Two Days)

I. Introductions and Background 

         - Expectations

         - Your Problems and Goals

         - Review of your Process & Products


II. Fluid Preparation and Delivery

         A. Fluid Mixing

                  1. Agitation

                  2. Temp Control

                  3. Degassing                 

                  4. Filtration        

         B.. Fluid Delivery

                  1. Feed Systems

                           - Pump, Pressure, Gravity

                  2. Flow Control

                  3. Viscosity Control

                  4. Temp. Control

                  5. In line mixing

                  6. Level control


III. Coating Application

         A Methods

                  1. Forward Roll

                  2. Reverse Roll

                  3. Rod

                  4. Knife over Roll

                  5. Gravure

                  6. Slot

                  7. Others?

         B. Impact of the Web on Coating                 

                  Definition of terms

                  Equipment slides

                  Mechanical Chatter   

                           - Drive related defects, sources and solutions

         * Case Study on Mixing or Coating


IV. Drying Equipment and Operation

         A. Drying                                              

                  Goals of perfect drying

                  Critical parameters of fluids and oven

                  Solvent drying and process control

                  Web temperature profiles

                  Process Control                 

                  Types of dryers & Oven Configurations

         B. Environmental concerns


                  Heat and solvent recovery and recycling


         C. Alternate curing techniques

                  Ultraviolet & Electron Beam

                           Application & issues

         D. Lamination

                  Equipment and processes

         * Case Study Drying


V. Web Handling & Treatment

         A. Web Handling                  

                   1. Tension, what is it?


                           Tension indicators

                           Tension zones

                           Constant torque, Constant tension

                  2. Tension control

                           Constant and Taper

                           Speed regulation and effect of bad wiring practices        

                           Regulation with - current, dancer 

                  3. Types of tension control

                           Manual Systems

                           Open loop

                                    - Follower arm, ultrasonic, radius

                           Closed loop

                                    - Dancers, force transducers

                           Intrinsically Safe Systems

                           Taper tension

         B. Treatment

                  1. Web Cleaning

                  2. Surface Treatment

                  3. Static Discharge


VI.  Process Control

         A. Temperature

         B. Viscosity

         C. Web temperature

         D. On line monitoring and inspection

                  - thickness

                  - defects        

         E. Coating defects

                  - defining & recognition


VII. Web guiding steering and spreading

                  A. Machine alignment

                  B. Web tracking

                  C. Wrinkles

                  D. Pre-entry span

                  E. Web spreading

                  F. Types of guides and steering mechanisms

                  G. Where to use them

         * Case Study in Web Handling, Guiding, Tension


VIII. Winding & Unwinding for coating operations

                  Splicing and transfer equipment    

                  Surface and center winding

                  Proximity rolls

                  Review of torque verses tension control        


IX. Slitting Equipment

                  - Types of Slitters: Shear and Score

                  - Importance of blade selection - material and angle

                  - Importance of handling blades in sets

                  - Magnetic clutches

                  - Constant tension slitters


X.  Processing Paper, Films and Laminates

         A. Paper properties effecting curl and creases

         B. Process impact on paper and solutions        

         C. Plastic Film Properties impacting curl                 

         D. Lamination of paper and dissimilar material


XI.  Wrap up and review questions

XII. Critique


         * Case Studies

         At this point, some one will present a problem (such as with paper curl/wrinkles) that they are deeply involved in today.  Using the groups combined knowledge and experience, and the material from the session, Jerry and Larry will facilitate the workshop and add technical points as appropriate. 

Gogolin & Associates   5/13



Coating Seminars