Foldable bathtub liner tank

A foldable tank for use in a bathtub comprising

• a cover and support plate having a perimeter, an underside surface and apertures, said plate being adapted to be supported at said perimeter by a bathtub, said plate comprising a hinge and two pieces which are hingedly connected therewith;
• a flexible and bendable sheet formed and sized to conform to the interior surface of said bathtub thereby to transfer the hydrostatic pressure of a liquid contained therein to said interior surface when in use;
• joining means for joining said sheet to said plate at a suitable distance from said perimeter on said underside surface of said plate parallel to said perimeter, said means including a strip of curved shape forming a fluting such that its surface facing the corresponding edge of said plate can act to maintain said sheet in tight contact and a tensioning elastic located in the center of said fluting formed by the concavity in the shape of said strip which is bent around the edges of said plate;
• and
• covers for said apertures;
• said plate being foldable along said hinge enclosing said sheet between said pieces thereby occupying minimal space when not in use.