Abstract: A pneumatic tire carcass having a radial direction and a circumferential direction. The tire carcass comprises at least one ply of stabilizing fabric and an air-blocking layer attached to the stabilizing fabric. The stabilizing fabric contains a plurality of reinforcing yarns and is disposed within the carcass such that the reinforcing yarns are arranged in the radial direction of the carcass. The reinforcing yarns comprise monoaxially drawn tape elements having a rectangular cross-section, an upper surface, and a lower surface. The tape elements contain at least a first layer having a draw ratio of at least about 5, a modulus of at least about 2 GPa, and a density of at least 0.85 g/cm3. The first layer contains a polymer selected from the group consisting of polyamide, polyester, co-polymers and mixtures thereof.

Abstract: A pneumatic tire carcass having a radial direction and a circumferential direction. The tire carcass comprises at least one ply of stabilizing fabric embedded into an air-blocking layer. The stabilizing fabric contains a plurality of reinforcing yarns and is disposed within the carcass such that the reinforcing yarns are arranged in the radial direction of the carcass. The air-blocking layer contains a polymer selected from the group consisting of polyolefin, ethyl vinyl acetate, polyisobutalyene or polyurethane, polyamide, polyester, co-polymers of PA and PES, dynamically vulcanized alloy resin, co-polymers, and mixtures thereof.