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Summary: 24 SOLUTIONS! for People, Processes and Paper
COATING TECHNOLOGY
DR. PEEYUSH TRIPATHI, DR. MARGARET JOYCE,
DR. PAUL D. FLEMING, WESTERN MICHIGAN
UNIVERSITY
Barrier paper is produced by coating paper with
various types of coatings to impart resistance to
permeation/penetration of certain types of per-
meates through it (1-3). A vast array of barrier-coated
papers is produced today, from pizza boxes to burger
wrappers to corrugated boards. Environmental issues,
cost pressures and dwindling profitability are forcing
mills to rethink their coating strategies. Coating tech-
nology is one the critical areas that leads to radical
changes in the barrier coating paradigm (4-5). Most of
the current coating processes
have some inherent disadvan-
tages, e.g. pinholes, incom-
plete coverage--especially at
low coat weights, base sheet
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