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Blogmaster: Dr. Edward D. Cohen

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Entries for September 2011

20

Drying Defects: Drying Rate Variability

Posted by Edward Cohen on September 20, 2011
The goal of the coating process is to maintain a constant drying rate, i.e. the amount of solvent removed per hour by the dryer during all coatings. A uniform reproducible drying rate is required to insure the maximum line speed, maximum productivity, low cost and a reproducible product.  Howev...

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Posted in: Defects Characterization Causes & Cures, Dryers & Drying
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16

CEMA Coating and Laminating Seminar for Converters

Posted by Edward Cohen on September 16, 2011
 CEMA ( Converting Equipment Manufacturers Association) is presenting a seminar “Coating and Laminating Fundamentals for Converters. The seminar will present technical information on the major elements of the converting process,. It wlll present the the fundamentals, while giving real wor...

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Posted in: Coating All Other
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14

AIMCAL Web Coating & Drying Course

Posted by Edward Cohen on September 14, 2011
  This course will present the technologies that are needed to successfully operate a web coating and drying line.  The fundamentals of each operation will be presented along with specific example of the required technologies. The course will be presented on October 37 4  in Phi...

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Posted in: Coating Applicator Roll Coating, Coating Applicator, Slot Die, Slide, Curtain, Coating Solution Handling, Coating Solution Measurements & Characterization, Coating Solution Preparation, Defects Characterization Causes & Cures, Dryers & Drying
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13

AIMCAL Coating Solution Preparation Course

Posted by Edward Cohen on September 13, 2011
This course will  present the technology needed to effectively prepare  solutions for the web coating process. Attendees will be shown the significant parameters for efficient mixing and how they can be used to estimate mixing time. Also, this course will demonstrate that the properties of...

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Posted in: Coating Solution Handling, Coating Solution Measurements & Characterization, Coating Solution Preparation
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07

Multilayer coating technology

Posted by Edward Cohen on September 7, 2011
Multilayer coating technology
In addition to coating single layer product structures, the web coating process can also produce multi-layer products.  This multilayer capability can be used to produce a variety of novel and cost effective products. The initial methods to produce these structures were not cost effective and r...

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Posted in: Coating Applicator, Slot Die, Slide, Curtain
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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.