| 摘要 |
<p>The invention relates to a longitudinal laminate board (1) of binder fixed mineral wool, which is suitable as a core of a sandwich element having surface layers of e.g. thin sheet metal. The laminate board consists of adjacently disposed longitudinally oriented rods (2), whose fibre plane forms a right angle to the plane of the laminate board. The rods are shorter than the laminate board and jointed to each other. The joints are distributed over the laminate board so as to eliminate their weakening effect on the resistance of the board. The total joint surfaces of the laminates form, within an interval (a) of the board, in which (a) depends on the length of the board and the number of laminates in the width, maximally one third of the cross-section of the board. As to areas of the length (a) next to the end faces and next to the support lines of multi-field boards, higher requirements of absence of joints are then posed on interposed areas.</p> |
