| 摘要 |
The invention relates to a method for the manufacture of an integrated mineral fiber product. In the method a first and a second primary mineral fiber web, which both are of a certain width, are obtained. The first and the second primary mineral fiber web are placed at least partly on top of each other, so that a combined primary web is obtained, which shows a first and second edge part and a middle part between them, and the combined primary web is transported in a first direction. A secondary mineral fiber web is obtained by overlapping the combined primary web transversely in regard to the first direction, whereby the combined primary web is arranged to partly overlap itself so that the perpendicular distance between two successive foldings of the combined web defines the width of the secondary fiber web, and the edge parts of the combined web make up at least a part of the large surfaces of the secondary web. The obtained secondary fiber web is hardened in a hardening furnace, and cut into final products of a suitable size. The first and second primary fiber webs are selected or manufactured so that in the first primary fiber web at least one of the following properties: mean fiber diameter, mean fiber length, surface weight, fiber amount, chemical composition, binder concentration or binder composition, differs at least 5 % from the corresponding value in the second primary fiber web. The invention also relates to a mineral fiber product. |
