Sonoco announced it is implementing price increases for all round composite cans and shaped rigid paperboard containers in North America by a minimum of 5%. The increase is effective with shipments beginning April 15, 2017.   “This price adjustment is necessary to recover continuing cost inflation, particularly in uncoated recycled paperboard, a primary raw material,” said Jeff Tomaszewski, VP and GM for Sonoco’s Rigid Paper and Closures North America Division....