Converting Quarterly title
The Official
Technical Magazine
of AIMCAL
small AIMCAL logo
  Search

Web Coating

Blogmaster: Dr. Edward D. Cohen

25 Latest Articles Current Articles | Archives | Search

Entries for 'Edward Cohen'

05

Cartridge Coaters Improve Coater Performance

Posted by Edward Cohen on January 5, 2011
Cartridge Coaters Improve Coater Performance
Cartridge coaters are a new coating hardware concept that permits rapid change of coating methods in any coater, without a long costly set-up time.  As a result, the optimum coating method for any products can be used without requiring a very long time to change methods. The basis for the need ...

[Read the rest of this article...]

Posted in: Coating Applicator Roll Coating, Coating Applicator, Slot Die, Slide, Curtain
Actions: E-mail | Permalink | Comments (0) RSS comment feed | del.icio.us
01

Happy New Year 2011

Posted by Edward Cohen on January 1, 2011
Happy New Year 2011 From Ed Cohen May health, happiness, good times and prosperity greet you and your families each day of this New Year.  May we all gain some additional knowledge to help us to do a better job in our vocation, hobbies and all aspects of our lives.    
Posted in: Coating All Other
Actions: E-mail | Permalink | Comments (0) RSS comment feed | del.icio.us
29

The Importance of Web Coater Process Modules

Posted by Edward Cohen on December 29, 2010
In order to effectively scale-up and manufacture web-coated product, the functioning of the coating lines Process Modules is important. These modules are the hardware units that are required to do all of the transformations needed to produce the final product. There are 8 major functional elements a...

[Read the rest of this article...]

Posted in: Coating All Other
Actions: E-mail | Permalink | Comments (1) RSS comment feed | del.icio.us
23

Most Prevalent Web Coating Defects

Posted by Edward Cohen on August 23, 2010
Most Prevalent Web Coating Defects I am in the process of preparing a series of articles on web coating process. They will appear in the newly launched Converting Quarterly. The series would deal with defects and each article would go into some depth on a specific defect. The first one is streaks...

[Read the rest of this article...]

Actions: E-mail | Permalink | Comments (1) RSS comment feed | del.icio.us
18

Coating Methods In Use 2010

Posted by Edward Cohen on August 18, 2010
Coating Methods in Use 2010 For many years, I have been monitoring the coating methods being industrially used in order to determine the most widely used web coating methods. This information is very useful to me for preparing lectures, consulting and R&D. The results of the most recent survey are...

[Read the rest of this article...]

Actions: E-mail | Permalink | Comments (4) RSS comment feed | del.icio.us
03

Coating methods in use

Posted by Edward Cohen on August 3, 2010
Coating methods in use I would appreciate your help in determining the various web coating methods that are routinely used in the coating and drying process, by answering the following questions Please list the manufacturing coating methods that are routinely used in your facility. Coating M...

[Read the rest of this article...]

Actions: E-mail | Permalink | Comments (0) RSS comment feed | del.icio.us
02

DEFECTS SURVEY

Posted by Edward Cohen on August 2, 2010
I would appreciate your help in determining the various types of defects are encountered in the coating and drying process, by answering the following questions Please list the 6 highest loss coating defects encountered in your facility. Defect coater type 1. 2. 3. 4. 5. 6. When comp...

[Read the rest of this article...]

Actions: E-mail | Permalink | Comments (0) RSS comment feed | del.icio.us
25

Web Coating Streaks Part 2

Posted by Edward Cohen on June 25, 2010
Web Coating Streaks Part 2 Streak Elimination Once streaks are observed on the coated web, it is obviously essential to start a technical program should be undertaken to determine cause of the streak and to implement corrective action. As discussed in Part 1, there are many different types ...

[Read the rest of this article...]

Actions: E-mail | Permalink | Comments (0) RSS comment feed | del.icio.us
25

Web Coating Streaks, Part 1

Posted by Edward Cohen on June 25, 2010
Introduction Streaks are a general class of defects, which are characterized by a long narrow line in the machine direction of the coated web; that have a different density than the overall coating. They have a significantly difference coating weight in the streak then in the main coating and a sha...

[Read the rest of this article...]

Actions: E-mail | Permalink | Comments (0) RSS comment feed | del.icio.us
02

Defect Reduction and Prevention

Posted by Edward Cohen on March 2, 2010
Defect Reduction and Prevention Defects are an ongoing source of extra costs and an impediment to the successful operation of an operating coating line. I know of no coater that does not have defect problems with both old and new products. Thus programs to eliminate defects when they occur and pre...

[Read the rest of this article...]

Actions: E-mail | Permalink | Comments (0) RSS comment feed | del.icio.us
Page 5 of 6First   Previous   1  2  3  4  [5]  6  Next   Last   

Blogmaster

Edward Cohen photo

Dr. Edward D. Cohen

Dr. Cohen is a technical consultant in all aspects of the web coating process. His expertise includes thin film coating and drying process development, coating application and drying of thin films, polyester base development, film defect mechanisms, formulating coatings, image analysis techniques for characterizing coating films and litigation support.

He has over 45 years experience in coating research and manufacturing technology with the DuPont Company and as a technical consultant to the converting and composites industries

He has extensive publications in the field and has co-authored several books: Modern Coating and Drying Technology, Coating and Drying and Defects: Troubleshooting Operating Problems, and chapters in Kirk-Othmer Encyclopedia of Chemical Technology and Water and Solvent Based Coating Technology. His honors are the John Tallmadge Award for Contributions to Coating technology, the AIMCAL President's award in recognition of Meritorious Service to AIMCAL and the Converting Industry, and the ISCST Founders Award. He was the founding president of the ISCST. He has a Bachelor of Science in Chemical Engineering from Tufts University and a Ph.D. in Physical Chemistry from the University of Delaware.