Tub apparatus and method of forming same.

摘要

Tub apparatus includes a foamed resiliently compressible plastic tub wall 12 having an inner side and an outer side, the tub having an interior to receive liquid; a tensile liner 23 adjacent the wall side, the liner resisting outward expansion in response to loading exerted by liquid filled into the tub interior; and including ports extending through the side wall and liner for circulating liquid between the interior of the tub and the exterior thereof. The plastic wall is typically locally head cored in situ and provided with elbow fittings having venturis for efficient water, and water and air flow.