Date of Award

1-1961

Degree Name

Bachelor of Science

Department

Pulp and Paper Technology

First Advisor

Dr. Robert A. Diehm

Abstract

Introduction

For many grades of paper, dimensional stability is very important in order for the paper to serve its specific purpose. Included in this category are such papers as map paper, template paper, printing papers, and chart paper. Dimensional stability may be improved by subjecting the fibers to less refining, but strength and other properties suffer as a result. Thus, any material which could be added to the fibers to increase dimensional stability would be welcomed by the paper industry.

The purpose of this thesis is to establish whether a particular type of material, wet strength resins, will improve dimensional stability. Wet strength resins can be added in the beater and are, therefore, easily added without special equipment.

Three wet strength resins were chosen to be investigated; Parez 607, a melamine-formaldehyde resin; Uformite 700, a urea formaldehyde resin; and Kymene 557, a new resin on the market. It was decided to add these three resins to the pulp in various percentages to determine any effect they might have upon dimensional stability.

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