Sonoco Products Co. /zigman2/quotes/201691559/composite SON +0.66% said Wednesday it will raise prices for all paperboard tubes and cores by at least 6% on shipments in the U.S. and Canada, starting July 26, citing continued raw materials inflation. Sonoco's paper-based tubes and cores are used in the paper, textile, plastic film and tape and specialty industries. "This price increase is necessary due to continued increases in costs for uncoated recycled paperboard (URB), our primary raw material which remains in very tight supply," said Mike Thompson, director of sales and marketing, North America tubes and cores division. "Additionally, we continue to experience significant inflationary pressures in adhesives, packaging and logistics costs." Sonoco's stock, which is still inactive in premarket trading, has advanced 11.4% year to date, while the S&P 500 /zigman2/quotes/210599714/realtime SPX -1.02% has rallied 13.1%.