| 摘要 |
A mineral fibreboard (146, 284) is produced with producing a first non-woven mineral fibre web (30) contains mineral fibres predominantly arranged in a first longitudinal direction and segments (38, 40) of the first mineral fibre web are arranged in a partly mutually overlapping relationship for producing a second non-woven mineral fibre web (50), which contains mineral fibres generally transversely relative to one another. The second mineral fibre web (50) is folded transversely for producing a third non-woven mineral fibre web (60, 70). The third non-woven mineral fibre web (60, 70) is cured for producing a cured non-woven mineral fibre web from which a mineral fibreboard (146, 284), or alternatively, a tubular insulating element (434, 436, 438) is cut. Apparatus for producing the above-described cured non-woven mineral fibre web comprises first and second means for producing and moving a first non-woven mineral fibre web (30) in a first longitudinal direction, third means for arranging segments (38, 40) of said first mineral fibre web, fourth means for moving a second mineral fibre web (50) in second longitudinal direction, fifth means for folding said second mineral fibre web transversely relative to said second longitudinal direction and parallel with said second transversal direction, sixth means for moving a third non-woven mineral fibre web (60, 70) in the second longitudinal direction, and seventh means for curing a first curable bonding agent. |
