Seam band for a machine producing sheet material, in particular paper or cardboard

On Seam tape for a machine for producing web material, in particular paper or Cardboard, comprises a seam formed as a fabric base structure (24) with in a band longitudinal direction weft threads running (1, 2, 3, 4) and extending in a band transverse direction warp yarns, wherein at the band longitudinal ends the weft threads (1, 2, 3, 4) Seam loops (14, 16) for connecting the tape longitudinal ends form, in which the seam fabric at least two weft layers (30, 32) are formed and weft pairs (34) in each case one weft thread (1, 4) of a first of the weft layers (30, 32) and a weft (2, 3) of a second of the weft thread layers (30, 32), and wherein two different types of groups (36, 36 ', 38, 38') of Weft pairs (34) are formed, in a first type of groups (36, 36 ') of weft thread pairs (34), a respective weft thread (1, 4) of the first of the weft thread layers (30, 32) with respect to the few moderately associated Weft thread (2, 3) of the second of the weft layers (30, 32) in a first direction and is offset in the second type of groups (38, 38 ') of weft thread pairs (34), a respective weft thread (1, 2) of the first of the weft thread layers (30, 32) with respect to the few moderately associated Weft (2,3) of the second of the weft layers (30, 32) in offset one of the first direction opposite second direction lies.