Apparatus for forming a bulk package and including bottom tray placement means for placing a bottom tray on a support, stacking means for stacking layers of objects on the bottom tray, top cap positioning means for positioning a top cap over the upper-most layer of stacked objects, and post member positioning...http://www.google.es/patents/US4897980?utm_source=gb-gplus-sharePatente US4897980 - Apparatus for forming a bulk package
