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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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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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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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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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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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12

How can we coat and dry cast film (e.g. CPP) with a water based-coating...without distorting it?

Posted by Eldridge Mount on December 12, 2011
The answer to this question is much like an earlier post on handling mono and biax oriented films.  The coating and drying processes are straight forward and should be easily applied to CPP or other “weak” films.  The goal is to coat and dry without exceeding a couple of key fi...

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03

Moisture effect on substrates and laminations

Posted by Eldridge Mount on December 3, 2011
 I had a recent e-mail question from a friend about a bond pull on a structure which had been immersed in water for some time.  During the test the bond strength dropped with time and the nature of the failure changed as the level of the bond strength dropped.  What could be the sour...

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22

A PP/PE tie layer recomendation

Posted by Eldridge Mount on November 22, 2011
On Jan 31, 2011 I answered the following question from with a blog post. “ Would you please inform me, if we want to produce PP/tie layer/PE films, what is the tie layer between PP and PE layers? “ We recently received a comment from Umit Sancar with some additional information and a r...

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21

An Hermetic Seal Test of laminated packaging films

Posted by Eldridge Mount on September 21, 2011
In testing package barrier it is important to have a film and sealing mechanism capable of producing hermetic seals.  The question which arises is how would you test a film and lamination for hermetic seal performance and in particular the seal jaw range over which you can achieve a hermetic se...

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25

Orange peel or melt disturbance?

Posted by Eldridge Mount on August 25, 2011
Question: We have a problem with 50micron BOPP film production.  We have observed an orange peel defect appears on both sides (Inside & Outside). This film will be metallized, so the smooth & clear appearance is a must, otherwise the defects will be clearly seen after metallization. Ple...

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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