| 摘要 |
The reinforcing structure consists of two basic layers made with a majority of filaments extending transversely across the layers, joined by loose binding filaments running perpendicular to them to maintain the transverse filaments parallel to one another. The layers are joined together by fusion with a mesh layer based on a thermofusible synthetic material such as polypropylene, produced by direct extrusion. The mesh layer has a melting point which is below that of the filaments in the basic layers, which can lie at an oblique angle to the transverse line of the layers. |
