An adhered composite includes (i) a polar thermoset substrate; (ii) optionally a primer layer disposed on the polar thermoset substrate; (iii) a first adhesive layer adhesively mated to the polar thermoset substrate, optionally with the primer layer disposed between the first adhesive layer and the polar thermoset substrate; (iv) a first layer of cured non-polar rubber adhesively mated to the first adhesive layer; (v) a second adhesive layer adhesively mated to the first layer of cured non-polar rubber; and (vi) a second layer of cured non-polar rubber forming an outer surface of the composite.

This invention provides an envelope configuration for retreading tires using a cold-retreading process. Envelopes formed by two parts are known in the prior art. However, the known sealing means between parts are not satisfactory, either due to sealing problems or due to decreasing the envelope useful life. In order to overcome these limitations, this invention provides an envelope (20) comprised of two parts (22, 24), in which an end region (224a) of a flap (224) of the first part (22) is covered by an end region (244a) of a flap (244) of the second part (24), or vice-versa, in order to form an overlapping joint, in which a free end of the flap (224) of the first part (22) has at least one differentiated cross section (224b) whose thickness is greater than that of the flap (224) of the first part (22), and in which the overlapping joint is covered by an elastic ring (26) that is wide enough to cover said differentiated cross section (224b).

This invention provides an envelope configuration for retreading tires using a cold-retreading process. Envelopes formed by two parts are known in the prior art. However, the known sealing means between parts are not satisfactory, either due to sealing problems or due to decreasing the envelope useful life. In order to overcome these limitations, this invention provides an envelope (20) comprised of two parts (22, 24), in which an end region (224a) of a flap (224) of the first part (22) is covered by an end region (244a) of a flap (244) of the second part (24), or vice-versa, in order to form an overlapping joint, in which a free end of the flap (224) of the first part (22) has at least one differentiated cross section (224b) whose thickness is greater than that of the flap (224) of the first part (22), and in which the overlapping joint is covered by an elastic ring (26) that is wide enough to cover said differentiated cross section (224b).

A method for retreading a tire casing is disclosed herein. The method includes a tread is disposed on a casing carcass with a bonding layer being interposed in between, and a strip is tensioned through several circuits on the tread. Also disclosed herein is a tire employing the a method of retreading disclosed herein.

A method for retreading a tire casing is disclosed herein. The method includes a tread is disposed on a casing carcass with a bonding layer being interposed in between, and a strip is tensioned through several circuits on the tread. Also disclosed herein is a tire employing the a method of retreading disclosed herein.

A process for retreading a tire, the process comprising the steps of providing a tire casing, providing a cured rubber component having first and second planar surfaces, providing a cushion gum, wherein the cushion gum contains a cure system comprising at least one stable aryl dinitrile oxide compound, applying the cushion gum to the tire casing, and forming a tire composite by applying the second planar surface of the cured rubber component to the cushion gum.

Provided are a tire having a small difference in a loss tangent (tan ) at a tire tread outer surface position and that at a middle position, a tread for a retread tire having an even vulcanization degree in a whole tread rubber area, a tire having the tread for the retread tire, and a method for manufacturing the tire. The tire satisfies the following formula:
0.05(tan .sub.atan .sub.b)/tan .sub.b0.05, where (tan .sub.a) represents a loss tangent of strain at 2% at 25 C. in a portion (a) within 1 mm deep from a tire tread outer surface in a direction perpendicular to a tread surface, and (tan .sub.b) represents a loss tangent of strain at 2% at 25 C. in a portion (b) within 2 mm from a median center between a tread portion outer surface and a bottom surface in the direction perpendicular to the tread surface.

Provided are a tire having a small difference in a loss tangent (tan ) at a tire tread outer surface position and that at a middle position, a tread for a retread tire having an even vulcanization degree in a whole tread rubber area, a tire having the tread for the retread tire, and a method for manufacturing the tire. The tire satisfies the following formula:
0.05(tan .sub.atan .sub.b)/tan .sub.b0.05, where (tan .sub.a) represents a loss tangent of strain at 2% at 25 C. in a portion (a) within 1 mm deep from a tire tread outer surface in a direction perpendicular to a tread surface, and (tan .sub.b) represents a loss tangent of strain at 2% at 25 C. in a portion (b) within 2 mm from a median center between a tread portion outer surface and a bottom surface in the direction perpendicular to the tread surface.

A method in accordance with the present invention retreads an air maintenance tire. The method comprises the steps of: grinding remaining tread material from a tire casing for a worn air-maintenance tire; temporarily securing a contoured piece around a structure secured to the inner surface of the tire casing; placing a tread on the tire casing; inflating a bladder within an internal cavity of the tire casing and around the contoured piece whereby the bladder does not contact the structure; securing the tread to the tire casing; deflating the bladder; separating the tire casing and tread secured to the tire casing from the bladder; and removing the contoured piece from the tire casing.

A method in accordance with the present invention retreads an air maintenance tire. The method comprises the steps of: grinding remaining tread material from a tire casing for a worn air-maintenance tire; temporarily securing a contoured piece around a structure secured to the inner surface of the tire casing; placing a tread on the tire casing; inflating a bladder within an internal cavity of the tire casing and around the contoured piece whereby the bladder does not contact the structure; securing the tread to the tire casing; deflating the bladder; separating the tire casing and tread secured to the tire casing from the bladder; and removing the contoured piece from the tire casing.