Low-noise tire and method for manufacturing same

A tire comprising a crown, two sidewalls, two beads, each sidewall connecting each bead to the crown, and a carcass reinforcement anchored in each bead and extending in each sidewall and radially inwardly at the crown,

• wherein the crown comprises:
• a tread intended to come into contact with a ground when the tire is rolling;
• and
• a crown reinforcement, which is arranged radially between the tread and the carcass reinforcement and which comprises a working reinforcement comprising at least one working layer that includes either one working layer or more working layers including a radially innermost working layer,
• wherein the carcass reinforcement comprises at least one carcass layer,
• wherein the tire further comprises a sealing layer for sealing against an inflation gas, the sealing layer being intended to delimit an internal cavity closed with a mounting support for the tire once the tire has been mounted on the mounting support,
• wherein the sealing layer includes:
• a crown portion, which extends axially in radial line with the one working layer or with the radially innermost working layer, and which has an axial width equal to at least 40% of an axial width of the one working layer or of the radially innermost working layer, and
• two sidewall portions, which extend radially in the sidewalls respectively and which each have a radial height equal to at least 5% of a radial height of the tire, wherein the sealing layer comprises a junction between two circumferential end edges of the sealing layer, the junction forming a radial overlap between one of the circumferential end edges of the sealing layer and the other of the circumferential end edges of the sealing layer, the junction extending in a main direction D4 forming, with a circumferential direction of the tire:
• in the crown portion of the sealing layer, an angle ES that ranges, in absolute value, from 20° to 60°, and
• in each sidewall portion of the sealing layer, an angle EF that is, in absolute value, strictly greater than the angle ES.