 Shares of Sonoco Products Co. SON, 0.06 gained 0.6 in premarket trading Wednesday, after the protective packaging maker raised its second-quarter profit outlook, following strong April and May results. The company said it now expects base earnings per share, which excludes nonrecurring items, of 1.60 to 1.70, up from its previous guidance range of 1.20 to 1.30. 