Apparatus for dispensing flowable materials from a pouch

A dispenser for flowable supplied in pouches of flexible film, comprising:

• a) a tube having an inner surface;
• b) a lid removably attached to one end of the tube, said lid having an orifice defining a conduit through said lid, and said lid having skirt means for trapping a pouch and holding taut a portion adjacent the orifice of the film of said trapped pouch;
• c) a nozzle removably attached to the orifice;
• d) a puncture means on said nozzle for piercing the taut portion of film of said trapped pouch;
• e) a piston within the tube adapted to move toward and away from the one end of the tube in directions parallel to the longitudinal axis of the tube,
• said piston having a peripheral lip means, facing said one end of the tube, for peeling the film of said pouch adjacent the inner surface of the tube by advancement of the piston toward said one end of said tube,
• said lip means having a length sufficient for causing said peeled film to form pleats in a plane perpendicular to the longitudinal axis of the tube,
• said piston having a piston channel means for receiving said pleats;
• and
• f) a peripheral lid channel on said lid facing said piston and adapted to receive said peripheral lip means.