TAPPI Visual Inspection Charts
My TAPPI Story: McKenna Goulette
New water-dispersible polyesters made with recycled polyethylene terephthalate (PET) are used as wetstrength chemicals. These polyester resins consist of three sections: PET backbone, functional groups, and hydrophilic end groups. The repulpability and recyclability of the paper made with these polyesters was studied with different dosages at different repulping conditions. The paper with the highest polyester dosage (200 pounds per ton of fiber) can be repulped. The polyester dispersion can be used with other wetstrength resins, such as polyamideepichlorohydrin; the polyester not only adds additional dry and wet strength, but also makes the nonrepulpable wetstrength resin repulpable. The mechanism for the polyesters increasing paper strength and repulpability was investigated by different repulping processes.
Experience the Power of Publications in 2026
Sponsored by the Recovery Boiler Program R&D Subcommittee of the American Forest & Paper Association (AF&PA) and published by TAPPI Press.
The best-selling text to introduce the entire technology of pulp and paper manufacture.
A project of the Yankee Dryer Safety & Reliability Committee.
TAPPI Press offers some of the most in-depth resources and references for the forest products and related industries.
Available for Purchase – Conference Proceedings
TAPPI maintains a record of key conference papers, presentations, and other conference publications, available for purchase in a variety of formats.
The Recyclability of Papers Treated with Environmentally-Friendly PET Polyesters, 2002 Fall Technica