Disposable plastic bag

Claim 1

A DISPOSABLE, FULLY COLLAPSIBLE, FLEXIBLE PLASTIC BAG FOR USE AS AN ENEMA BAG, A HOT WATER BAG, AN ICE BAG OR THE LIKE COMPRISING A PAIR OF THIN, COLLAPSIBLE, FLEXIBLE FLAT WALL PANELS OF THERMOPLASTIC SHEET MATERIAL NORMALLY COLLAPSED AGAINST EACH OTHER AND SEALED TOGETHER AROUND THEIR ENTIRE PERIPHERIES AND THROUGH WHICH THE CONTENTS OF SAID BAG ARE VISIBLE, A HOLE IN A SAID WALL PANEL SPACED SLIGHTLY FROM ONE EDGE OF THE INTERIOR OF SAID BAG AND A SUBSTANTIALLY GREATER DISTANCE FROM THE OPPOSITE EDGE OF SAID INTERIOR, A PLASTIC SPOUT MOUNTED ON SAID WALL PANEL OVER SAID HOLE, SAID SPOUT COMPRISING A HOLLOW, TUBULAR NECK EXTENDING SIDEWAYS FROM SAID WALL PANEL AND A RADIALLY OUTWARDLY EXTENDING INTEGRAL FLANGE AT THE INNER END OF SAID NECK, A FACE OF SAID FLANGE BEING SEALED FLUSH TO SAID WALL AROUND SAID HOLE WITH SAID NECK OVER SAID HOLE, THE WALL OF SAID NECK BEING SUBSTANTIALLY MORE RIGID AND THICKER THAN SAID WALL PANELS, AND A REMOVABLE CLOSURE FOR SAID NECK, SAID SPOUT BEING OF SEMI-FLEXIBLE ELASTIC AND YIELDABLE PLASTIC SEALED TO SAID PLASTIC WALL PANEL BY MEANS OF SAID FLANGE BUT OF SUBSTANTIALLY GREATER RIGIDITY AND THICKNESS THAN SAID WALL PANELS, SAID CLOSURE CONSISTING OF A CAP HAVING AN END WALL AND A TUBULAR SIDE WALL EXTENDING THEREFROM AND ADAPTED TO BE TELESCOPICALLY RECEIVED WITHIN SAID NECK, SAID SIDE WALL BEING TAPERED INWARDLY AS IT EXTENDS AWAY FROM SAID END WALL, THE INNER SURFACE OF SAID NECK HAVING A TAPER CONFORMING TO THE OUTER TAPER OF SAID SIDE WALL OF SAID CAP, WHEREBY WHEN SAID SIDE WALL IS MOVED INTO SAID NECK THE OUTER TAPERED SURFACE OF SAID SIDE WALL IS FORCED INTO SEALING RELATION WITH THE INNER RELATIVELY FLEXIBLE TAPERED SURFACE OF SAID NECK, SAID SIDE WALL AND THE INNER SURFACE OF SAID NECK HAVING BAYONET LOCK MEANS FOR LOCKING SAID SIDE WALL IN SAID NECK WITH SAID TAPERED SURFACES OF SAID NECK AND SIDE WALL URGED INTO SEALING CONTACT WITH EACH OTHER, SAID BAYONET LOCK MEANS COMPRISING AT LEAST A PAIR OF SLOTS IN THE EDGE OF SAID CAP SIDE WALL AND AT LEAST A PAIR OF INTEGRAL LUGS EXTENDING RADIALLY INWARDLY FROM THE INNER SURFACE OF SAID NECK, SAID LUGS BEING ADAPTED TO BE RECEIVED IN SAID SLOTS, EACH OF SAID SLOTS EXTENDING AXIALLY FROM THE EDGE OF SAID SIDE WALL AND THEN IN A CIRCUMFERENTIAL DIRECTION.