Zeres, Inc., a leading manufacturer of flexographic printing inks for both wide web and shipping container applications, has appointed Tom Wilkinson as its new national sales manager.      Mr. Wilkinson, a 20-year veteran of the paper and packaging industry, last served as vice president of operations at Laimbeer Packaging. He will direct the company’s sales and marketing strategy in the U.S. and Canada.      “This is a new position we decided to create to better service our existing customers a...