| 摘要 |
The present invention provides a papermakers fabric having a system of flat monofilament machine direction yarns (hereinafter MD yarns) which are stacked to control the permeability of the fabric. The system of MD yarns comprises at least upper and lower layers of yarns. Preferably, each upper MD yarn is paired in a vertically stacked orientation with a lower MD yarn. Preferably, multiple layers of stacked CMD yarns are provided which are maintained in the stacked relationship by the flat stacked MD yarns to provide suitable void volume within the fabric. In a low permeability embodiment, at least the upper MD yarns are flat monofilament yarns woven contiguous with each other.
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