| 摘要 |
The invention relates to a method for manufacturing a plate. One or more fields occupy the major part of the plate surface. The plate on at least one side within the area of said field(s) has reliefs with projections and valleys alternatingly , and between the sides a web, the relief patterned field(s) being at least partly bordered by edge portions which have a thickness larger than the mean thickness of th e plate within the region of said field(s). In a preparatory step an intermediate product is manufactured, comprising at least a first portion which shall for m said relief patterned field(s). The intermediate product is placed between two engraved moulding tool parts. An impact member, which is stricken against at least on e of the parts, has sufficiently high kinetic energy for the material to flow out and fill the mould cavity between the tool parts. |
