Web Coating Blog

Effective Networking, A Path Through The Information Overload

                        Effective Networking, A Path Through The Information Overload
                                            Edward Cohen

Even though we live on large planet, with large physical dimension (a Volume of 1.0832073_1012 km_ and a  Mass of 5.9736_1024 kg); technologies such as the Internet, Information Sciences, World Wide Web, rapid digital communications ,easily accessible databases and search engines have made it a very small world. It now possible to instantly communicate with persons all over the world and to obtain technical information from most countries, businesses and Universities.

WEB COATING AND DRYING PROCESS TECHNOLOGY

The AIMCAl  Converting School is sponsoring  a course on Web Coating and Drying Proces Technology. The detaieled course outline is below. For more information and to register, see www.AIMCAL.org

                    WEB COATING AND DRYING PROCESS TECHNOLOGY
                    Edward Cohen, Ph. D Edward Cohen Consulting, Inc.
                E. J. (Ted) Light foot, Ph. D Dupont Fluoroproducts

CEMA Coating & Laminating Fundamentals

AIMCAl & CEMA will be sponsoring a Seminar on Coating & Laminating. The schedule is below. For more information and to register go to
        www.AIMCAL.ORG

Continuing Education Courses.

The Association of Industrial Metallizers, Coaters and Laminators (AIMCAL) is sponsoring several continuing education courses in Converting Process Technology in 2008.

Response to Query on Mayer Rod Coater

                        Response to Query on Mayer Rod Coater
                            Edward Cohen

In response the question on the web coating blog, about sources for mayer rod coater.  The specifications you gave are fairly standard and can be met by several companies.

The following is a list of coater manufacturers who can meet this need:

Response to Query on Measuring Cell Volume of Gravure roll

Response to Query on Measuring Cell Volume of Gravure roll

There are two possible sources for the oil to use with the URMI device:

     Pamarco Global Graphics
    www.pamarcoglobal.com/

    Carolina Roll Engravers
          www.carolinaroll.com/

There is also a supplier who provides a unique one time use test strip that give a very accurate determination of the bcm/volume available on a cylinder. The strips work well on most cylinders. Initially they weren't able to be used on high volume cylinders however they developed a new strip that does. Here is the supplier info:

Cylinder test strips, Capatch at www.capatch.com

Swiss company with representatives in the US.

Sani-Blast in Spring Grove, MN and ESCA in Hatfield, PA

Slot Die Coating

                                                        Slot Die Coating
                                                        Douglas Darrow
                                                        Cloeren Inc.
                                                        ddarrow@cloeren.com
                                                                            715-552-7421

A question often asked is: ‘Why should I consider a Slot Die, instead of the coating method that I am currently using?’  There are a multitude of reasons, most of which are well known to people who have been in the coating business. 

One Thing to Optimize Process

A question that is often asked about the Web Coating Process is “ What are the one or two most critical areas of the process that I should concentrate on to obtain a coated product with high quality and low cost?”. A possible basis for this question can be found in an interchange in the 1991 movie “City Slickers”, between Billy Crystal and Jack Palance

Organic Roll Coating to Form Interference Layers

                        Organic Roll Coating to Form Interference Layers

                                    Ken McCarthy
                        Multilayer Coating Technologies LLC

Abstract

This presentation will discuss an anti-reflection layer coated from a solution of organic polymers. The optical properties of this layer will be delineated, along with the required uniformity down-web, cross-web, roll-to-roll, and batch-to-batch.

Introduction

The primary purpose of an interference layer is to reduce glare reflecting from the surface of a film, thereby enhancing a customer’s visual experience. The coverage of this layer is vital to its being able to function as an interference layer. In this paper, the reasons for tight coverage control and some of the potential issues will be discussed.

Defect Reduction Process: What’s in a name

One of the most important step steps in an effective defect reduction process in the web coater is the accurate naming of the defect. This name must be unique for a defect, unambiguous and interpreted in the same way by all who use the name. Naming is usually an easy straightforward process because most areas of science have standard naming conventions. For example, there are standard names for organic chemicals, which are used by all scientists. These are issued by the International Union of Pure and Applied Chemistry. Thus all chemical compounds can be unambiguously named.  Similarly the disciplines of Chemical Engineering, Electrical Engineering and Physics all have standard naming conventions.