Introducing:

Dr. David W. Riley, Ph.D.

Extrusion Engineers

858 Princeton Court
Neshanic Station NJ, 08853
US

Short Description:
19 years as a consultant in the field of plastic processing, 40 years experience in developing polymer defect technology, 15 years in developing the field of plastic and polymer coefficient of friction related to the feed section of the extruder.
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BIO / Resume / CV:
EW #883 has over 19 years as a consultant in the field of plastic processing, 40 years experience in developing polymer defect technology, 15 years in developing the field of plastic and polymer coefficient of friction related to the feed section of the extruder.

Experience
Research and development and plant technology on all thermoplastic materials for:
Tenneco (PVC) late 70s
Scientific Process & Research (Friction Research Director) 76- 78
General Cable Research and Production (Technology Manager--PE) 1967-1976
Western Electric-Buffalo (Sr. Development Engineer--PVC and PE) 1960-1967
Union Carbide Silicones (Research Engineer) 1954-1960
E. I. DuPont de Nemours Polychemicals Dept. (Research Chemist--PE) 1951-1954
US Naval Officer
Goodyear Research (Research Chemist) Synthetic Rubber 1943-4, 6

Education
PhD and MSc Physical Organic Chemistry
The Ohio State University (1946-1951)
BS in Chemistry, Tufts University 1943
Modern Physics and Creativity, 1963
Western Electric Graduate Engineering Training Center

Areas of Expertise
Expert Witness
Analytical Instrumentation Adaptation to Processing Equipment
Friction Analysis
Melt Rheology
Extrusion Equipment: Design & Analysis of Production
Telecommunication Cables and Insulation
Power Cables and Testing XLDPE
All phases of PVC Compounding & Extrusion
Thermal Stability of Polymers
Surface Chemistry, Metals & Polymers
Polyethylene Analysis, FTIR & Electrical

Significant Achievements
Invented Analytical Engineering, a term devoted to a scientific analysis of production primarily in the field of extrusion
Invented an extrusion rate controller which cut the product temperature variability by an order of magnitude on a 150 mm extruder, significantly improving the quality control in a $40 million wire and cable facility.
Designed an extruder screw which saved the wire and cable company $360,000/year in production costs.
Invented "Flow Vision", an instrument on-line for inspecting polymer melts for gels, voids, contamination and any other heterogeneity .
Invented a rheological tool for measuring the degree of shear damage done to polymers during processing. This includes the level of fragmentation and the incipient crosslinking in processing as function of shear rate.
Developed ASTM Methods for analyzing plastics, D 3364 Melt Flow Analyzer, D 3591 Analysis of Formulated PVC, D 5576 Structural Entities in Polyolefins by IR, D 5477 Polymer Layers or Inclusions by IR.

Professional Societies
Fellow, American Institute of Chemists
Fellow, American Association for the Advancement of Science
Fellow, American Society for Testing and Materials (ASTM)
Fellow, Society of Plastics Engineers (SPE)
Certified Professional Chemist & Chemical Engineer
By National Certification Commission
Life Senior Member, Institute of Electrical and Electronic Engineers
Emeritus Member, American Chemical Society
Member, Society of Applied Spectroscopy
Member, Society of Rheology
Distinguished Member and Past President and Councilor of the
Palisades Section of SPE
Past Councilor and Past Chairman of the
Polymer Modifiers and Additives Division of SPE
Currently Councilor for the
Polymer Analysis Division of SPE
Section Chairman on Molecular Parameters &
Spectroscopy or ASTM Committee D 20 on Plastics
Past Chairman, Subcommittee D 20.70 on
Analytical Methods
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