The present disclosure relates to modular unit operations designed for a flexible mount converter and methods for manufacturing and/or assembling various components of absorbent articles. The modular unit operation comprises a modular frame comprising a transformation portion. A drive portion is joined to the drive side of the modular frame, wherein the drive portion is joined without belts and pulleys. The modular unit operations are preferably standardized, configurable, re-usable, re-configurable, and stackable.
