| 摘要 |
A maching forming one skin of an for insulating panel e.g. of the type having an expanded polystyrene core sandwiched between a pair of steel or aluminium skins, has a series of rollers 26,27,28 which firstly sever a portion of the skin(s) from the core and then progressively deform the skin(s) to form a free-standing flange. |
