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Blogmaster: Dr. Eldridge M. Mount III

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20

Poor stretching of skin layer

Posted by Eldridge Mount on February 20, 2012
Poor stretching of skin layer
In an earlier post, I talked about the need to have coextruded layers which are compatible in terms of orientation behavior.    The figure attached to this post shows a little bit of what I mean.  In this instance a PP film was being produced with an EVOH skin layer.  In thi...

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Posted in: Basics
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10

We are seeing differences in tape testing and lamination adhesion behavior

Posted by Eldridge Mount on February 10, 2012
The Blog recently received the following two-part question: Why do inks applied to a corona treated polyester film pass tape adhesion test but completely transferred to the polyethylene film side after lamination with solvent less two component adhesive? Is there any test other than a tape test by w...

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Posted in: Questions
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06

Using a control chart to solve a metallized product quality problem

Posted by Eldridge Mount on February 6, 2012
In one especially important situation I used control charting of metallizer process conditions to solve a big problem with metallized films.  In this case after a year or more of good production the metallized film moisture barrier was “lost”.  It turned out that the metalli...

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Posted in: Basics
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02

Inspection and sorting vs. control charting

Posted by Eldridge Mount on February 2, 2012
I have been discussing control charts with a few people lately and I thought it a good time to recall why we control chart.  In general we control chart to determine if a process or product property is in control and there fore suitable for the customer or next production step if the part is be...

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Posted in: From the Archives
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22

Surface Treatment and Heat Sealing OPP

Posted by Eldridge Mount on January 22, 2012
 I received a question a few days ago relating to observed differences in the sealing of an OPP film.  In particular the observation reported was that untreated surface was sealing better to itself (UT/UT) than the treated surface to itself (T/T).  The outcome was that the UT/UT orien...

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Posted in: Basics
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12

More on "orange peel' in films

Posted by Eldridge Mount on January 12, 2012
I had a follow-up question relating to my answer about “orange peel” defects in BOPET films. The question is, “Is there any effect of the required addition of antiblock agent “silica particles” to the skin layer on the formation of an orange peel appearance?” ...

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Posted in: Basics
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06

What is the best method for measuring the plasma effect at metallizing film?

Posted by Eldridge Mount on January 6, 2012
The second part of Yanti’s question after reading the Oct. 31, 2011 posting “Plasma treatment and treatment retention”, is as follows: Recalling the question: Should the plasma setting be different for BOPP and BOPET? And if yes, 1. What is the setting difference (gas compositi...

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Posted in: Basics
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02

What is the setting difference for plasma-treating BOPP and BOPET?

Posted by Eldridge Mount on January 2, 2012
After reading the October 31, 2011 posting “Plasma treatment and treatment retention”, Yanti asks: Should the plasma setting be different for BOPP and BOPET? And if yes, 1.       What is the setting difference (gas composition or electric power)?  ...

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Posted in: Questions
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31

Welcome to the New Year

Posted by Eldridge Mount on December 31, 2011
Thought I would take a minute to thank all of you who show an interest in the content of this Blog and I am sure the content of the other Blogs as well.   So to Start Happy New Year  I sincerely hope that each and every one of you has a wonderful 2012 and that if you have proces...

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Posted in: Background
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21

Cast-roll surface repairs

Posted by Eldridge Mount on December 21, 2011
In my post on embossing cast and oriented films during orientation, I commented on the impact of casting defects on the film. They never really disappear especially if they cause physical bumps or “dings” in the film surface. During stretching the dings are reduced in thickness as is the...

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Posted in: Background
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Blogmaster

Eldridge Mount photo Dr. Eldridge M. Mount III

Dr. Mount is an independent consultant in the coextrusion, extrusion, film, metallization and film converting industries. He is a leader in the development of metallized films for barrier applications and film laminations. His expertise is in oriented film product and process research, the design and implementation of extrusion systems and coextrusion die specification and system specification including installation and start-up. He is also recognized for trouble shooting mono and biaxial orientated film and sheet coextrusion, melt casting and melt pinning, and film surface treatment by corona, flame and plasma systems. EMMOUNT Technologies, LLC offers consulting and technical training in film orientation, barrier technologies, coextrusion and extrusion and measures polymer melt viscosity with a capillary rheometer.

Eldridge has over 30 years industrial experience in the extrusion and orientation of polypropylene and polyester films at ExxonMobil Chemical and ICI Americas Film Divisions. He managed the intellectual property of Mobil Chemical Films Division and has courtroom experience as an expert witness. A frequent contributor to SPE ANTEC, AIMCAL and TAPPI conferences, he is a member of the SPE Extrusion Division Board of Directors, and a Fellow and Honored Service Member of SPE. Appointed AIMCAL Metallizing Consultant in 2001 and a past VP of the Society of Plastics Engineers. He has a Bachelors degree in Chemistry from West Chester University and a ME and PhD in Chemical Engineering from Rensselear Polytechnic Institute.

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Eldridge M. Mount III

EMMOUNT Technologies, LLC

Beth M. Foederer

Optex Process Solutions, LLC