| 摘要 |
PCT No. PCT/GB93/01117 Sec. 371 Date Apr. 15, 1995 Sec. 102(e) Date May 15, 1995 PCT Filed Feb. 8, 1993 PCT Pub. No. WO94/12294 PCT Pub. Date Jun. 9, 1994A stud for use in partitioning is formed by passing plain sheet material between a pair of rolls (18, 19), each having projections, to form projections at both of the opposite surfaces of the material and then roll-forming the material to a channel, the positions of the projections and recesses at each surface of the material being such that lines drawn on a surface of the material between adjacent rows of projections and depressions are not rectilinear.
|
