| 摘要 |
A tray for manufacturing paving and facing plates contains a carrying metallic sheet with lower smooth surface and upper forming surface, it has a relief image. Open-end holes with flats are made on the smooth surface of carrying metallic sheet, and the upper forming surface with relief image is made from thermoplastic material and is fastened on the upper corrugated surface of carrying metallic sheet. The relief surface has trapezoid and triangular lugs, the trapezoid lugs communicate with partitions of a special attachment, which separate colored sand-cement mixtures. |
