| 摘要 |
<p>The cover has a nonwoven structure comprising a set of staple fibers. A base structure is embedded in the non woven structure. The base structure has a warp knit structure (1), which comprises sewing threads (3) and reinforcing threads (4) i.e. weft threads. The reinforcing threads have a greater flexural strength than the sewing threads. The sewing threads have a set of loops into which the reinforcing threads are tied to form the warp knit structure. An intermediate layer (2) is arranged at the warp knit structure. The layer is connected with the reinforcing threads via the sewing threads.</p> |
