We currently buy our inks from Superior Ink Company. Superior’s inks have always been designed with features that are recognized as “environmentally friendly”.
Their sheet-fed inks and varnishes are formulated with significant amounts of bio-base, renewable resources, including vegetable oils such as linseed oil, resins based on tall oil or gum rosin, and alkyds derived from vegetable oils.
Keystone Press is currently using a process ink line that contains as much as 26% vegetable oil content and we are at this time testing a line that contains as much as 37% vegetable oil content which is as high a content as anyone in the industry.
Superior’s standard sheet-fed inks, (those other than their 4 color process lines), contain a limited (17-18%) amount of petroleum-derived ink oils, which are considered to be volatile organic compounds (VOC’s). In terms of VOC emissions, the EPA only considers 5% of the VOC content to be released into the atmosphere during printing. Based on this ruling, Superior’s standard sheet-fed inks release less than 1% VOC into the atmosphere during printing.
Our process inks also have a “stay open” feature. This means that our pressmen never have to “skin” off the top layer of ink before using. This greatly reduces the amount of waste that needs to be disposed of.