A set of moulding elements, designed to be inserted into a mould for moulding a tyre, comprises: at least one first moulding element (1) and one second moulding element, each moulding element extending in a main moulding-element direction (EM) between two ends (3) of the moulding element with one of the ends (3) of the first moulding element connecting to one of the ends (3) of the second moulding element along an axis (MA), which is substantially perpendicular to the main moulding-element axis (EM).

A set (1) of moulding elements intended to be added to a mould comprise a main moulding element (10) and a secondary moulding element (20) comprising an edge (21), said main moulding element (10) comprising a contact zone (11) adapted to be in contact with all or part of the edge (21) of the secondary element, said contact zone (11) not being flat, and the edge (21) of said secondary moulding element (20) comprising at least one recessed portion (22) complementary to the non-flat contact zone (11) of the main element.

A laminate body of a rubber layer and a resin layer made of a resin, wherein the rubber layer includes a surface-treated superficial layer 4 directly united with the resin layer without any intervening adhesive layer.

A tire sipe blade is provided comprising a mold engagement portion and a molding portion. The mold engagement portion and the molding portion comprise a first reinforced end portion having a circumferential thickness T.sub.R1. A first tapered portion extends from the first reinforced end portion and has an axial length L.sub.T1. An unreinforced main portion extends from the first tapered portion and has a circumferential thickness T.sub.U, wherein the thickness T.sub.R1 is greater than the thickness T.sub.U. Additionally, a circumferential thickness of the first tapered portion decreases along its length L.sub.T1, from the first reinforced end portion to the unreinforced main portion, from the thickness T.sub.R1 to the thickness T.sub.U.

A pneumatic tire is provided with sipes, at least some of which have an open top end to the surface of the tread block. An intersection of the sipe with a surface that is geometrically congruent and parallel with the surface of the tread block and arranged a depth apart from the surface of the tread block into the tread block forms a curved line. A first sipe is shaped in such a way, that at all depths (d) within a range from the open top of the first sipe to a first transition depth, the curved line includes at least one deflection point having an inner corner that has a radius of curvature under 0.3 mm. A lamella plate for manufacturing the pneumatic tire, the tread band, or the tread block. Use of the lamella plate for manufacturing a tread block, a tread band, or a pneumatic tire.

Mould for moulding a tread of a tire, this tread having a thickness of material to be worn away and a tread surface intended to come into contact with the road surface when the tire is running, this mould having a moulding surface intended to mould the tread surface of the tread, and having a moulding element formed of a blade and a bar, the blade being attached to the moulding surface to mould a sipe in the tread, the bar, borne by the blade to form an enlarged part of maximum width D, being intended to mould a channel in the tread, this channel itself being intended to form a new groove when the tread becomes part worn. Each blade is delimited by two lateral faces forming between them a mean angle of between 6° degrees and 18°. The blade width decreasing from the mould surface when new, as far as the connection with the bar, the blade width meets the bar being at least equal to between 0.2 and 0.4 times the maximum width D.

A mold (10) for forming a tire (12) is provided that has an interchangeable element (14) configured for engaging the tire (12) and forming a section of tread (16) of the tire (12) when the tire (12) is molded by the mold (10). A lamelle (18) is removably attachable to the interchangeable element (14) and is configured for engaging the tire (12) and forming a sipe (20) of the section of tread (16) of the tire (12). The lamelle (18) is removably attachable in that the lamelle (18) is configured to be attached to the interchangeable element (14) and then removed from attachment to the interchangeable element (14).

A tire that includes a tread 4 having a plurality of land portions demarcated by circumferential grooves. Sipes are formed in at least one of the land portions to form a plurality of rods each surrounded by the sipes. Each rod has a bent portion between an outer surface of the rod and a root thereof. Each rod is bent so as to form an arc at the bent portion or each rod is bent so as to form a corner at the bent portion.

A vulcanization mold is for a tire in which a plurality of sipes are arranged in a tire circumferential direction. The vulcanization mold includes a tread mold having a plurality a blades, for forming the sipes, provided on a tread forming surface. The tread mold is composed of a plurality of segments divided in the tire circumferential direction such that the segments are movable in a tire radial direction, and the number of divisions of the segments is 17 or more and 29 or less.

The present invention is directed to a 3D-printed tire segment model having a tread portion comprising a plurality of grooves, ribs and/or tread blocks, and a plurality of blades extending out of the ribs and/or tread blocks, wherein the tire segment model is made of a 3D-printed polymer. Moreover, the present invention is drawn to a method of making a tire mold segment, including the step of 3D-printing the above tire segment model with a polymer.