Pratt Industries (Love Box) Kansas City is part of Pratt's Sheet Plant Division, an ever-expanding network of more than 40 facilities throughout the United States and Mexico, converting sheets supplied from 17 corrugating plants into the industry's best and most environmentally-friendly packaging. All use Pratt's high-performance 100% recycled paper manufactured at our five paper mills which comprise the most technologically-advanced mill system in North America.