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Nonwovens in Filtration

March 26, 2024, Tuesday

8:00am-10:00am,  ET Canada & US

$USD 350

$USD 175 (Member Only )

Nonwovens in Filtration

Course Objective

Nonwovens continue to grow in production and consumption all over the world. From disposable cheap products to high-value engineered products, nonwovens find application in several areas that are critical to our life and environment, including that of filtration. Filtration and other performance of nonwovens depend on the structure and properties of the products, which in turn depend on the choice of the materials and the processes used.

This course will provide an overall understanding as to what nonwovens are and how they are different from other fabrics. The topics that will be covered include: (i) Nonwoven products and markets; (ii) Polymers and fibers used in nonwovens; (iii) Nonwoven production – web formation and Bonding; (iv) Dry-laid and Wet-laid formation of webs; (v) Direct web formation from polymers; (vi) Web bonding technologies – mechanical, thermal and chemical; (vii) Finishing of nonwovens; and (viii) Nonwovens testing and characterization. Advantages and disadvantages of these processes, as well as their flexibilities and  limitations will be deliberated.

Because of the enormous opportunities and continuing innovation, nonwoven sector continues to enjoy sustainable growth for foreseeable future. Recent innovations and developments, as well as the options available for the industry to develop new products will be discussed.

Course Outline

  • Introduction to Nonwovens

  • Nonwovens Market
    Personal Protection
    Facemasks, Protective Apparels
    Other disposables

  • Broad Applications of Nonwovens in Filtration
    Air Filtration
    Liquid Filtration

  • Nonwoven Manufacturing Processes
    Web Formation Technologies – Dry laid and Wet laid
    Polymer to Web Formation Technologies -Spunbond and Meltblown
    Web Bonding Technologies – Mechanical, Chemical and Thermal

  • Structure and Properties of Nonwovens

  • Nonwovens as Engineered Products

  • Unique Position of Nonwovens in Filtration

  • Opportunities and Trends for Future Development

Instructor Biography

Nonwovens in Filtration

Dr. Gajanan S. Bhat


Dr. Bhat is a Georgia Athletic Association Professor of Fibers and Textiles, Head of Department of Textiles, Merchandising and Interiors ,University of Georgia, Athens, GA, USA

After earning his Ph.D. from Georgia Tech in textile and polymer engineering, Dr. Bhat joined the University of Tennessee, Knoxville (UTK) in August 1990, where his research covered nonwovens - melt blown, spunbonded and biodegradable, plastics recycling, nanotechnology, sustainable materials, and high performance fibers. As the director of UTNRL he demonstrated successful production of nanofibers from thermoplastic polymers by meltblowing. In July 2016, he joined UGA as the Head of the Textiles and Merchandising and Interiors (TMI) department. Dr. Bhat has published more than 200 research papers, has three US Patents and has made more than 250 national or international presentations. He has served as the president of the Fiber Society and is also an active member of INDA, TAPPI and the Textile Institute. Some of the awards/recognitions he has received include:

  • Outstanding Young Engineering Alumni by Georgia Tech (1996)

  • Distinguished Achievement Award from the Fiber Society (1999)

  • Fellow of the Textile Institute (2005)

  • TechniTex India Research Achievement Award (2008)

  • TAPPI NET division Technical Achievement Award (2014).

In addition to conducting research in the area of nonwovens since 1984, Dr. Bhat has taught nonwoven courses at UTK, and was involved in developing and teaching the introductory nonwovens training course with INDA. He has also been part of the nonwovens tutorial and INTC and TAPPI NET conferences. In addition to being part of the Textile and Nonwovens Development Center (TANDEC) conference for several years, he has served as session chair and organizing committee member of  several TAPPI and INDA technical conferences.  Many of his former students are working in reputed nonwoven companies as well. He has been working with many nonwoven companies in product development and solving problems.

Nonwovens in Filtration

Dr. Cédric Vallet 


Dr. Cédric Vallet is the Head of Product Management & Business Development – Filtration Division, at Ahlstrom (in France). He has 20 years of experience in Filtration; in R&D, then in Sales & Marketing. Expertise in filtration media manufacturing and various air & liquid applications. He led the Ahlstrom FiltEV® launch, a new platform of high-performance filtration materials for Electric Vehicles, and  the launch of Ahlstrom ECOTM, a new generation of lignin-containing materials, supporting the increasing sustainability demands in the global automotive market. Dr. Vallet received his Ph.D. in 2006 from the University of Rennes (FR) and Engineering Master’s Degree in Chemistry, ENSCR, 2002.

Nonwovens in Filtration

Dr. Ethan Xiao


Dr. Ethan Xiao is the Senior Global Director of Filtration Solutions at Hollingsworth&Vose (in China), leading a multi-national team looking after air and liquid filtration business in various applications including Engine, Mechanical Power, Cleanroom, Gas Turbine, RPE, etc.  Ethan has 15 years of experience in Filtration Industry in various roles – Product Development, Business Development, Product Management, Sales and Marketing. He is the Vice Chairman of CCCS (China Contamination Control Society) Technical Committee and the member of ISO/TC142 and ISO/TC209 Technical Committees. Ethan received his Ph.D in Material Science and Engineering from Tongji University, China and his Master’s Degree in Nanophysics from University of Antwerp, Belgium.


Mr. Mike Malloy, Principal, Malloy Strategies, LLC, has more than 25 years’ experience developing, launching, and selling Filtration Media Solutions, collaborating with global leaders on some of the industry’s most innovative products. He is a strategic commercial leader who believes that Filtration is an essential tool in creating a cleaner world that provides sustainable prosperity for all its people.  In roles ranging from Product Marketing to Business Development to Sales Leadership, he has created long-term value working with top technology and market teams in segments like Indoor Air Quality, Cabin Air, Fluid Power, and Life Sciences, and has a comprehensive understanding of the media manufacturing processes that support them. Mike specializes in translating complex technical concepts into actionable plans and profitable products through multi-functional engagement and team leadership. He is currently the Principal of Malloy Strategies, LLC, specializing in Innovative Sales and Marketing Strategies for the Filtration Industry. Mike holds a Bachelor of Science in English and a Master of Public Administration from Iowa State University.

Dr. Christine Sun, President of Waterloo Filtration Institute, is a renowned technical and market expert in the global filtration industry. With over 30 years of experience in both academia and the industry, she has an in-depth knowledge of filtration, and extensive hands-on expertise in product development, with over 100 technical publications and patents. She is also actively involved in many air/liquid filter standard test developments. Dr. Sun received her Ph.D. from Tsinghua University, Beijing, China, and her Executive Certificate from Northwestern University - Kellogg School of Management. From 2004 to 2011, Dr. Sun worked for Freudenberg Filtration Technologies as the R&D manager and Technology Director for Donaldson 2011-2013. She was the AFS Chair from 2016 to 2017 and received the AFS Fellow Award in 2019, Sr. Scientist Award in 2012, and the best paper award from INDA in 2008. She is also an editorial board member for Textile Research Journal and Journal of Industrial Textiles.

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