a cushioned shipping assembly includes a carton and foam inserts to support a product shipped by a supplier , which elements are successively returned by an end user to be reused in the same or other shipping assembly , while various components are recycled as they become spent . in some embodiments , the carton collapses to a diminished size for return . a resource center reroutes or refurbishes the components , recycling aged or spend pieces . on - premises pelletizing of reclaimed polymer provides a more efficient , environmentally clean system . spent inserts of identified polymer may be diverted to users of specific resins .