Thursday 21 October 2021

Guest Interview: Paolo Negri – Founder and Owner of Isotattica “Stop turning the knobs and apply hands-on rheology to troubleshoot and design your materials and equipment!”

Hello and welcome to this guest interview. Today I present to you Mr. Paolo Negri founder and owner of Isotattica. We have the chance to learn about analysis on polymer flow behaviour with innovative methods.

Enjoy the interview!

Tell us about yourself, your current role, and about Isotattica.

Thank you for having me on your blog. I am Paolo Negri founder and owner of Isotattica.

I have always worked in the fantastic world of polymers and I am driven by the passion of offering innovative service with multidisciplinary approach.

My Vision is to become a valuable reference for industrial rheology with innovative methods to be used with concrete problem-solving purpose.

With over 25 + years of transversal activities in the field of polymers, extrusion, rheometry, we provide technical support to solve problems that arise during processing phase of the materials, with strong focus on rheology as methodology and “tool” to elucidate and optimize processes and equipment.

What is the rheological investigation method and device you developed and what is the practical usage of it?

Rheology is concerned with measuring the stress in a material and relating it to its deformation in the molten flow of the material.

Rheology is still little known in the industrial field because it is considered complex, of impractical implementation and does not bring practical results, vice versa I want to propose a different way of utilization of it: if findings are expressed in an understandable reading and applied in a pragmatic and concrete way to industrial processes, rheology becomes a valid approach to understand and resolve critical issues.

Understanding the flow properties of polymers through tests directly on extrusion-connected equipment can help optimize products and process conditions, thus saving costs and minimizing potential waste.

My motto is: Stop turning the knobs and apply hands-on rheology to troubleshoot and design your materials and equipment!

Isotattica offers analysis on flow behaviour with innovative methods: flow visualization and rheometric measurement through flow-induce birefringence and elongational experiments made with a filament stretching apparatus.

The first approach is innovative (the optical cell is patent pending) and allows flow visualization and mapping of stresses and deformation inside the geometry of flow channels. Thanks to the so called “optical rule” is it possible to sequence and calculate stresses and finally to determine viscosity in the melt stream where elongational specifically takes place.

The second approach, filament-stretching-method, is mainly used as complementary test and allows assessment of the melt quality in extensional experiments.

I invite readers to learn more on my website

What are some potential applications?

The proposed methods of analysis are very sensitive: it is possible to replicate industrial process condition and capture the details that explain the difference in extrudability, for example due to the smallest of batch fluctuation;

In addition, it is possible to understand the contribution of elongational deformation in “complex flow” and correlate structure-property-processing-performance.

Die designers benefit from this because they can finally size the channels paths and tooling’s based on the specific and well understood flow responses of the materials and not based on generic data.

Where can the readers find out more about you and the services of Isotattica?

Whatever you would like to know about Isotattica including practical examples of utilization of these analysis, you can visit our website or simply mail or call me asking to provide specific details and offers.

With the pandemic continuing, we are more enhancing on in-direct communication via video conferences.

Who do you turn to?

We provide concrete and pragmatic support:

- To those who need to design new materials / compounds and perform rheometric characterizations for mapping and quantifying flow response, with emphasis in the extensional field in the various channel’s geometries or in downstream operation like blowing, cast film, profile extrusions, strand palettization, injection molding and many others

- To those who need to design and manufacture process equipment and layouts (co-extrusion heads / dies, extruders, downstream equipment) for specific industrial applications where knowledge of the shear characteristics but above all in elongation are vital.

- Who must study the extrusion process and its efficiency based on the rheological response of the materials and their stability when changing extrusion settings.

- To producers and converter of materials, or to deepen the intimate rheological aspects that cannot be captured with conventional approaches and that can make the difference.

- To those who need material consultation, for proper material selection, design review, feasibility study.

- To those who want to acquire mastery in dealing with and solving problems and improve business by distinguishing themselves from competitors.

That was the guest interview with Paolo Negri from Isotattica – thank you Paolo for the interesting insights into the polymer rheology world!

Thanks for reading!

Greetings and #findoutaboutplastics

Herwig Juster

#rheology #guestinterview #Isotattica

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