Sonoco announced it is implementing a 4% price increase for all composite cans and corresponding metal ends in the US and Canada, effective with shipments beginning A. 1, 2018.    “Sonoco’s global sourcing power and commitment to supply security have allowed us to effectively mitigate historic inflationary pressures,” said Robin Gordon, division VP of sales for Sonoco’s U.S. and Canada composite cans and metal ends. “However, the recent trade announcements assigning tariffs on the steel and al...