Self-sealing waterbed mattress

A self-sealing waterbed mattress comprising an exterior, puncturable envelope and an internal liner assembly conforming generally to the shape of the envelope, the liner assembly comprising two flexible, polymeric films with a layer of viscous sealing material therebetween, the sealing material having a sufficiently high viscosity at 110.degree. F. that it does not flow through a puncture in the films and a sufficiently low viscosity at 60.degree. F. that it can flow into a puncture in the films and seal the puncture against water leakage therethrough.

In a waterbed mattress comprising a polyvinylchloride envelope for holding water therein, the improvement comprising an internal liner assembly conforming generally to the shape of the envelope for protecting the envelope from the water and for sealing leaks in the envelope, the liner assembly comprising an internal layer of polyethylene and a film of polybutene on the outward facing surface of the internal layer of polyethylene, the polybutene being filled so that it has a sufficiently high viscosity at 110.degree. F. that it does not flow through a puncture in the envelope and a sufficiently low viscosity at 60.degree. F. that it can flow into a puncture in the envelope and seal the puncture against water leakage therethrough.

A self-sealing waterbed mattress comprising a polymeric, puncturable envelope and an internal layer of viscous, water-resistant sealing material for sealing leaks in the envelope, the sealing material having a sufficiently high viscosity at 110.degree. F. that it does not flow through a puncture in the envelope and a sufficiently low viscosity at 60.degree. F. that it can flow into a puncture in the envelope and seal the envelope against water leaks through the puncture, the mattress containing water which is in direct contact with the sealing material.