摘要 |
PCT No. PCT/FI89/00235 Sec. 371 Date Aug. 16, 1991 Sec. 102(e) Date Aug. 16, 1991 PCT Filed Dec. 15, 1989 PCT Pub. No. WO90/07040 PCT Pub. Date Jun. 28, 1990.A longitudinal laminate board of mineral wool and method of making the board are disclosed. The laminate board consists of adjacently disposed pieces at least some of which are shorter than the length of the board and whose fibre plane form an essentially right angle to the plane of the laminate board. The pieces are jointed within the laminate board. |