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Journal articles
Magazine articles
Open Access
Use of kaolin clay in aqueous barrier coating applications, TAPPI Journal November 2023

ABSTRACT: Paper-based packaging with barrier effect, as opposed to single use plastics, is gaining more prominence for sustainability reasons. At the same time, latex- or biopolymer-based aqueous barrier coating dispersions are increasingly being adopted as a better alternative to the traditional barrier coating materials, such as wax, surface active chemicals, and polyethylene. In this work, studies were performed to determine the influence of different kaolin clays in latex binder-based aqueous coatings on barrier properties, namely, oil and grease, water resistance, and water vapor transmission rate, by applying coatings to solid bleached sulfate (SBS) paperboard substrate in the laboratory. The aim was to explore potential benefits of using kaolin clay to replace some of the latex binder in coating and improve or maintain various types of barrier performance and blocking without negatively influencing the other performance attributes, including heat seal. The delaminated clay with the highest shape factor provided improved barrier properties over the clays of low shape factor. The ultrafine and non-delaminated clays required significantly higher coat weights to reach satisfactory barrier properties. Coatings with different latex levels indicated that a considerably high proportion of coarse delaminated clay can be incorporated to replace latex binder, while still achieving exceptional barrier properties. Furthermore, a change in binder system was found to significantly alter the barrier properties and the role that a mineral pigment can play. The results indicate that a proper selection of binder systems for each barrier property would be required while considering the clay/latex coating systems.

Journal articles
Open Access
Insights on the refining mechanism, TAPPI JOURNAL, March 2002, Vol. 1(1) (346KB)

Insights on the refining mechanism, TAPPI JOURNAL, March 2002, Vol. 1(1) (346KB)

Journal articles
Open Access
Papermaking potential of congress grass: pulpability and fiber characteristics, TAPPI JOURNAL, March 2002, Vol. 1(1) (147KB)

Papermaking potential of congress grass: pulpability and fiber characteristics, TAPPI JOURNAL, March 2002, Vol. 1(1) (147KB)

Journal articles
Open Access
Where to add retention aid: issues of time and shear, TAPPI JOURNAL, March 2002 (174KB)

Where to add retention aid: issues of time and shear, SOLUTIONS & TAPPI JOURNAL, March 2002 (174KB)

Journal articles
Open Access
The role of pore density in the setting of offset printing ink on coated paper, Solutions! & TAPPI JOURNAL, May 2002, Vol. 1(3) (157KB)

The role of pore density in the setting of offset printing ink on coated paper, Solutions! & TAPPI JOURNAL, May 2002, Vol. 1(3) (157KB)

Journal articles
Open Access
Vibration analysis applied to low-speed machines in the pulp and paper industry, TAPPI JOURNAL, May 2002, Vol. 1(3) (406KB)

Vibration analysis applied to low-speed machines in the pulp and paper industry, TAPPI JOURNAL, May 2002, Vol. 1(3) (406KB)

Journal articles
Open Access
Metals buildup in TCF bleach plant closure: laboratory simulation, SOLUTIONS! & TAPPI JOURNAL, May 2002 (208KB)

Metals buildup in TCF bleach plant closure: laboratory simulation, SOLUTIONS! & TAPPI JOURNAL, May 2002 (208KB)

Journal articles
Open Access
The influence of impulse drying on the performances of papers containing cationic starch and calcium carbonate, TAPPI JOURNAL, November 2002, Vol. 1(9) (512KB)

The influence of impulse drying on the performances of papers containing cationic starch and calcium carbonate, Solutions! & TAPPI JOURNAL, November 2002, Vol. 1(9) (512KB)

Journal articles
Open Access
The role of vapour deposition during internal sizing: a comparative study between asa and akd, Journal of Pulp and Paper Science, October 2002, Vol. 28(10) (402KB)

The role of vapour deposition during internal sizing: a comparative study between asa and akd, Journal of Pulp and Paper Science, October 2002, Vol. 28(10) (402KB)

Journal articles
Open Access
Characterization of BCTMP fines and their effect on sizing, TAPPI JOURNAL, September 2002 (342KB)

Characterization of BCTMP fines and their effect on sizing, Solutions! & TAPPI JOURNAL, September 2002 (342KB)

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