Sun Chemical will increase prices on liquid inks and coatings for flexible packaging for its customers across all regions, effective Jan. 1, 2018.   The percentage increase will be in the high single digits and will vary dependent on the product composition and product line.   Since the end of 2016, costs have risen on an annual basis and further increases are expected for 2018. These are mainly due to production and environmental restrictions on key materials, especially in China where ther...