Sonoco announced it has completed the acquisition of the remaining 70% interest in the joint venture of Conitex Sonoco, a vertically integrated global leader in the manufacture of paper-based cones and tubes used in the textile industry.   The Conitex Sonoco joint venture was formed in 1998 between Texpack, Inc., a Spanish-based global provider of paper-based packaging products, and Sonoco’s former North America textile cone business. Sonoco acquired the remaining 70% interest from Texpack, Inc....