| 摘要 |
The cross direction tensile strength of a carded web is increased by 30% to 50%, without a decrease in machine direction tensile strength, by realigning the fibers of the carded web at least partially in the cross direction. In the preferred embodiment, an air blower manifold is arranged above a scrambler roll onto which a carded web is transferred from a doffer roll at the output end of a conventional card. The air blower manifold has a plurality of louvers spaced across the width of the web in the cross direction for realigning the fibers in the cross direction. The increase in cross directional tensile strength is obtained in the resulting bonded, hydroentangled, and other nonwoven fabrics.
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