In 1978 the company was sold to the Campbell Soup Company. As part of Campbell, the Vlasic brand prospered due to increased investment in both advertising expenditures and R&D. The 1994 roll-out of the Vlasic Stackers line of pickle 'slices intended for sandwiches continued to help build the brand into a major line of pickle products accounting for over a third of the U.S. pickle market. By 2000 the brand boasted 95% consumer awareness and was the only national pickle brand in America_ However, the overall pickle market had been flat for a few years and Vlasic had only achieved small gains in the nineties.