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Dr. Gerry Ring

Contact Information


UW-Stevens Point
Department of Paper Science and Chemical Engineering
2001 Fourth Avenue, SCI D274
Stevens Point, WI 54481


Dr. Gerard (Gerry) J. F. Ring is Professor Emeritus at the University of Wisconsin - Stevens Point. He was Department Chair for the Paper Science and Chemical Engineering Department for many years. He taught Paper Machine Operations, Paper and Fiber Physics, Colloid and Papermaking Chemistry, and Industrial Thermodynamics. Most recently he teaches the Paper Making Short Courses for the Wisconsin Institute for Sustainable Technology. He has authored articles on gel permeation chromatography, cellulose biosynthesis, fiber-length analysis, and paper and paperboard grades. He has been awarded three patents on superabsorbant technology and is the editor of John Swanson's "The Chemistry of Papermaking Materials".

A member of the Technical Association of the Pulp and Paper Industry (TAPPI), he is presently serving on the TAPPI Board of Directors. He was also chairman of Lake States TAPPI.

Dr. Ring was a 1992 Wisconsin Teaching Fellow and has been listed in Who's Who Among America's Teachers four times. He is the author of the award winning PaperQuest videotapes on the various paper properties. His current research interests involve fiber-length analysis and paper formation. He has had five years industrial experience with Kimberly-Clark corporation and has had several internships with International Paper and Westvaco. Dr. Ring holds a B.S. degree in Chemistry/Biology from the State University of New York at Albany, and M.S. and Ph.D. degrees from the Institute of Paper Chemistry.

Honors and Awards

  •  1998 Profiles in Teaching
  •  1992 Wisconsin Teaching Fellow
  •  1994 Who's Who Among America's Teacher


  • United States Patent #4,740,528. Garvey, C. E. and Ring, G. J. F. (Apr. 26, 1988). Superwicking crosslinked polyurethane foam composition containing amino acid.
  • United States Patent #4,725,628. Garvey, C. E., Pazos, J. F. and Ring, G. J. F. (Feb. 16, 1988). Process of making a crosslinked superabsorbent polyurethane foam.
  • United States Patent #4,548,847. Aberson, G. M. and Ring, G. J. F. (Oct. 22, 1985). Delayed-swelling absorbent systems.

Technical Presentations

  • Multiple Component Anlysis of Fiber Length Distributions, 1995 International Paper Physics Conference, Niagara-on-the-Lake ON.
  • The Basics of pH. Lake States TAPPI Alkaline Papermaking Meeting, (May 1995)
  • Papermaking demonstrations for "English for College" and Dokyo University programs (Summers 1993 - 1997).
  • Uses of Secondary Fiber in the Paper Industry, Wisconsin Chapter of the Soil and Water Conservation Society of America, Stevens Point, Wisconsin (February, 1990).
  • The Fundamental Properties of Papermaking Fibers, Pulp & Fiber Seminar, American Paper Institute, Ponte Vedra Beach, Florida (October, 1989).
  • The Art of Papermaking, 1989 Elderhostel summer program.
  • Manganese in Oxygen Pulping, Fortieth Executives' Conference, The Institute of Paper Chemistry, Appleton, Wisconsin (May, 1976).


  • Ring, G. J. F.and Bacon, A. J. (1995) Multiple component anlysis of fiber length distributions, 1997 Tappi Journal, 80(1): 224-231.
Measuring the percentage composition of individual pulps in a blended furnish usually involves tedious fiber counting techniques. Furnishes with two components can use an optical fiber-length analyzer. This paper presents a general mathematical techniques for expressing the fiber length averages of distributions obtained this way. This technique permits the derivation of accurate mathematical relationships between pulp component percentages and all fiber length averages-arithmetic, length-weighted, or weigh-weighted. The derived relations also have use with three or more components.
A mathematical technique allows calculation of instantaneous pulp component percentages of rapidly changing pulp blends with on-line fiber length analyzers.
  • Ring, G. J. F., Stratton, R. A. and Schroeder, L. R. (1983). Dispersion-compensated calibration for gel permeation chromatography: Theory and utilization for direct and universal calibration, Journal of Liquid Chromatography, 6(3): 401-424.

  • Ring, G. J. F. (1982). Study of polymerization kinetics of bacterial cellulose through gel permeation Chromatography. In R. M. Brown Jr. (ed.), Cellulose and Other Natural Polymer Systems, Plenum Press, New York, pp. 299-325.

  • Ring, G. J. F. (1980). The molecular weight distribution of bacterial cellulose as a function of synthesis time, Ph. D. Thesis, The Institute of Paper Chemistry, Appleton, Wisconsin.

  • Ring, G. J. F. (1976). The effect of the initial oxidation state of manganese as a cellulose degrader/protector in oxygen alkali bleaching, M.S. Thesis, The Institute of Paper Chemistry, Appleton, Wisconsin.

Research Interests

  • Multiple Component Analysis
  • Redefining Fines
  • Relative Bonding

Technical Meetings Chaired

Lake States TAPPI

October, 1997   The Ingredients of Papermaking, Appleton, WI.
May, 1996   Recycling, Duluth, MN.
March, 1996   Pressing and Drying, Stevens Point, WI.
May, 1995   Alkaline Papermaking, Appleton, WI.
May, 1994   Alkaline Papermaking, Stevens Point, WI.
October, 1993   Two-day Papermaking, Appleton, WI.
January, 1993   Alkaline Papermaking, Stevens Point, WI.
February, 1991   Alkaline Papermaking, Stevens Point, WI.
May, 1990   Coating, Duluth, MN.

Video Tapes

  • Ring, G. J. F. (1990). PaperQuest: Curl, University of Wisconsin/Stevens Point, Stevens Point, Wisconsin.
  • Ring, G. J. F. (1990). PaperQuest: Formation, University of Wisconsin/Stevens Point, Stevens Point, Wisconsin.
  • Ring, G. J. F. (1989). PaperQuest: Opacity, University of Wisconsin/Stevens Point, Stevens Point, Wisconsin.

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