(RTTNews) - Sonoco (SON), a provider of consumer, industrial, healthcare and protective packaging, Monday said it is increasing prices for all rigid paper containers and closures sold in North America by 9.5 percent, effective with shipments on, and after, June 3. The company said the price increase is necessary to recover rapidly rising costs for key raw materials used to produce rigid paper containers and closures. Haynes said, "These inflationary cost increases have been compounded by the after-effects of Winter Storm Uri on the adhesives industry along with incredible demand in the steel marketplace.