Ink News.(Sugeng)

1. Environmental Resin's Performance in Low Rub Black
Offset Inks
INTRODUCTION
The development work covered in this article compares the use of American Gilsonite Company's product,
Environmental Resin ER-125, in rub- resistant web offset blacks, versus the Asian and European use of rosin
modified phenolics. While phenolic systems are not common in the U.S., they can produce inks of ultimate rub
resistance. With the use of suitable gelling agents, phenolic systems can be made to lithograph extremely well at
very high speeds on all types of presses.
Secondly, the work looks at using combinations of ER-125 and Gilsonite to alter flow and rheology to produce
inks that are suited to all common ducts systems including overshot, undershot, and rail system without the
need for flow agents such as treated clay.
MODIFIED PHENOLIC SYSTEMS
The introduction of high-speed web offset presses for the printing of high quality newspapers in Europe,
Australia, and par