Lamella of high stability for a vulcanization mold, vulcanization mold with such lamellas, vehicle tire with tire tread in which sipes are produced by such lamellas

A lamella for use in a vehicle tire vulcanization mold, said lamella having:

• a) projections (4) and depressions (5), wherein a height (Z4) of said projections (4) and a depth (Z5) of said depressions (5) extend substantially parallel to a peripheral surface (P) of a tire tread (L) of a vehicle tire to be molded in the vehicle tire vulcanization mold;
• b) wherein each one of said projections (4) has a highest line-shaped location or crest (BK) correlated therewith;
• c) wherein each one of said depressions (5) has a lowest point-shaped location or crater (K) correlated therewith;
• d) wherein said projections (4) and depressions (5) are distributed according to a substantially uniform areal division;
• e) wherein said areal division is defined by dividing lines (T) extending in a plane positioned in a plane defined by said crests (BK);
• f) wherein said dividing lines (T) are comprised of three sets, wherein said dividing lines within each one of said sets extend parallel to one another;
• and
• g) wherein said dividing lines of different one of said sets intercept one another at an angle of 60° so that a grid of triangles is formed.

A lamella for use in a vehicle tire vulcanization mold, said lamella having:

• a) projections (4) and depressions (5), wherein a height (Z4) of said projections (4) and a depth (Z5) of said depressions (5) extend substantially parallel to a peripheral surface (P) of a tire tread (L) of a vehicle tire to be molded in the vehicle tire vulcanization mold;
• b) wherein said projections (4) and depressions (5) are distributed according to a substantially uniform areal division;
• c) wherein said lamella has a first area in which first ones of said projections (4) have a highest point-shaped location or top (G) correlated therewith;
• d) wherein in said first area first ones of said depressions (5) have a lowest point-shaped location or crater (K) correlated therewith;
• e) wherein said lamella has a second area in which second ones of said projections (4) have a highest line-shaped location or crest (BK) and second ones of said depressions (5) have a lowest point-shaped location or crater (K) correlated therewith or wherein second ones of said projections (4) have a highest point-shaped location or top (G) and second ones of said depressions (5) have a lowest line-shaped location or valley (S) correlated therewith;
• f) wherein said areal division is defined by dividing lines (T) extending in a dividing line plane;
• g) wherein each one of said first projections (4) is a pyramid having a triangular base and wherein each one of said first depressions (5) is an inverted pyramid having a triangular base;
• h) wherein said triangular bases of said first projections (4) and of said first depressions (5) have three base lines (B), respectively, and wherein all three of said base lines (B) are located in said dividing line plane;
• i) wherein parallel to each one of said three base lines (B) of said first projections (4) one of said base lines (B) of said triangular base of said first depressions (5) is positioned in close proximity and wherein parallel to each one of said three base lines (B) of said first depressions (5) one of said base lines (B) of said triangular base of said first projections (4) is positioned in close proximity;
• j) wherein said dividing lines (T) are comprised of three sets, wherein said dividing lines within each one of said sets extend parallel to one another;
• k) wherein said dividing lines of different one of said sets intercept one another at an angle of 60° so that a grid of triangles is formed;
• l) wherein said first and second projections (4), represented by +, and said first and second depressions (5), represented by −, along at least one common bisecting line of said triangles are arranged in a pattern deviating from a regular pattern of +−+−+−.