Extrusion Expert Witnesses

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Extrusion Expert Witness - Sample Bios

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The below expert witness bios represent a small fraction of those Extrusion experts known by Cahn Litigation Services. These bios are provided to give attorneys a sense of the Extrusion landscape.

Expert Witness #214975

This expert is the founder and CEO of a highly successful consultancy specializing in plastics. This expert has spent many years in the Plastics Industry as a leading authority on plastic and composite part failure. This expert worked for a plastics product manufacturer as a leading Principal Scientist. This expert is a world-renowned scientist and author as evidenced by many awards. This expert is a member of ASM International (a society of Material Scientists), the American Chemical Society Polymer Chemistry and Polymeric Materials Divisions, the International Association of Plumbing and Mechanical Officials, the National Association of Subrogation Professionals, the Society of Fire Protection Engineers, the Failure Analysis Division of the Society of Plastics Engineers, the Institute of Packaging Professionals, and the Society of Automotive Engineers. This expert has provided expert services in over 150 litigations involving plastics and composites. This expert is one of the top plastic failure experts in the world having analyzed hundreds of plastic and composite parts including, pipes, food packages, bottles, tanks, latches, toys, medical devices, exercise equipment, automotive parts, pulleys, chairs, and stools. This expert has authored >100 scientific papers, >60 US Patents, a book, and several encyclopedia articles on chemicals and plastics.


  • Forensic analysis/testing of plastic and composite parts
  • Manufacturing processes for plastic bottles including extrusion blow-molding, injection blow-molding, and stretch
  • Blow-molding
  • Root cause analysis of CPVC fire suppression system failures
  • Exercise equipment failure
  • Plastic piping products including ABS, PVC, CPVC, PEX, PP, PVDC, and HDPE
  • Additives for plastics including antioxidants and UV stabilizers
  • Design of plastic parts to meet the requirements of the application
  • Fracture mechanics of plastic materials and composites
  • Chemical resistance/degradation of plastics and elastomers
  • Discoloration and loss of clarity of plastics
  • Plastic part and package design and stress analysis
  • Polymer blends and compounding
  • Polyolefin based resins and applications
  • Additives for improved adhesion in polymer blends and composites
  • Chemicals and Plastics R&D
  • Monomer stabilization and polymerization
  • Molding and extrusion of plastics including foams and films
  • UV, thermal, and environmental degradation of chemicals and plastics
  • Plastic flammability and plastic flame retardant formulations
  • Migration of chemicals and additives from plastics
  • Chemicals and plastics for medical use
  • Composite and nanocomposite materials including carbon fiber composites
  • Permeability (vapors and odors) of plastics
  • Plastics used in medical applications
  • Abrasion resistance of plastics and elastomers
  • Material Selection (choosing the right plastic for the application)

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Expert Witness #251009

This expert is a globally recognized polymer technology expert and industry leader with many years of experience with an outstanding record of achievements in the research and development of vinyl and non-vinyl polymers, color concentrates, and the establishment of industry standards. As the Principal of a technical consultancy, this expert is highly sought-after for expertise in problem solving, product innovation in vinyl plastics, thermoplastics, and processing. The holder of several patents in the area of weather resistant plastic composite technologies for outdoor exposures, this expert provides technical support to manufacturing plants and customers and represented companies in industry organizations. This expert has assisted manufacturing plants in developing quality control procedures and optimization of manufacturing processes for improved performance. Additionally, this expert has investigated and successfully resolved numerous customers' technical problems, physical properties retention, product distortion problems in end use exterior applications; extrusion problems including poor surface characteristics, brittleness during profile cutting and fabrication, extruder overload, and compounding problems, such as inconsistency in compound performance. This expert has also performed raw materials evaluations, dimensional stability studies, and field failure analysis. Further, this expert has performed weatherability testing including, heat build-up, dimensional stability, long term performance, degradation, stabilization, impact modification, and reinforcement. This expert has served as an Expert witness in multiple product, material, compounding, and application patent / intellectual property cases. This expert has been deposed and testified.  

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Expert Witness #234561

This expert obtained a diploma in chemical engineering, an M.A.Sc. in chemical engineering and a Ph.D. in chemical engineering. This expert is a professor in the department of chemical and biological engineering. This expert's main research interests are in the area of polymer rheology, polymer processing and surface science with emphasis on superhydrophobic/superoleophobic surfaces. This expert's specialty is using the science of applied rheology principles to solve practical problems in polymer processing including film extrusion, blow molding, film blowing, film casting and many other polymer processing operations. Mechanical properties of polymeric products and how these are related to their molecular structure and rheology are also themes of this expert's research interests. This expert has published more than 200 referred journal papers, 102 papers in conference proceedings, 161 conference presentations, three patents and one book on polymer processing instabilities. While this expert has been involved in patent-related litigations as an expert, writing reports and serving as an inside consultant, this expert has not had the opportunity to be deposed or testify.

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Expert Witness #262750

This expert holds a Ph.D. in Physical Chemistry with a focus on Colloids and Interface Science. This expert brings to the table many years of experience in Crop Protection R&D, including but not limited to: Technology application and development; Formulation development, characterization/testing, processing, registration, and commercial scale-up/start-up; Spray Drift.

  • Liquids - Expertise in the development and processing of: micro-emulsions (MEs), emulsion concentrates (ECs), aqueous and non-aqueous dispersions (SCs, ODs), and suspo-emulsions (SEs).
  • Solids - Experience with granular formulation development, processing and commercial production optimization, troubleshooting, and reregistration of crop protection products produced by spray drying, fluid bed granulation, and paste extrusion.
  • Spray Drift Task Force - A consortium assembled to address the EPA's concern over pesticide drift. This expert’s tasks included:
  • Chair the Physical Property Subcommittee, leading the development, design, and execution of a program to assure that necessary measurements were made on model fluids and tank mixtures, spanning the range of formulation types, properties, and concentrations common in aerial and ground applications.
  • Interface and advise multiple contract labs, providing detailed equipment specification, instructions, and procedures to accomplish the above.
  • Sit on the Technical Committee to assure alignment and integration of the Physical Property, Atomization, and Field-Testing Sub-Committees.
  • Worked with the Atomization Sub-committee and the wind-tunnel facility to develop and carry-out the necessary atomization testing.
  • Literature research and interviews with experts in droplet formation and atomization, spanning academia, industry, and the U.S. Government.
  • Teaching - Adjunct Faculty. Taught General Chemistry, Inorganic Chemistry, and Physical Chemistry for Chemistry and Engineering majors.

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