| 摘要 |
Firmly woven fabrics, such as umbrella silk, or shrinkable fabrics, are passed through tenter or drying frames without damage by ensuring that edges are unable to slide out of screwing diestock of tension chain. A moving screwing diestock flap is provided with a knife the edge of which is transversely and/or longitudinally corrugated or has saw-toothed or serrated shape. |
