FIELD: production of mineral fiber panels having one or more cavities of predetermined shape.
SUBSTANCE: method involves succession of the following steps: using mineral fiber web containing non-hardened or non-cured binder; providing lengthwise displacement of mineral fiber web; pressing into web one or more forming parts, preferably by placing forming part/parts on surface and compressing web portion containing forming part/parts on surface, or pressing one or more forming parts into web body, preferably by dividing web across its thickness into two strips; placing forming part/parts between said strips and compressing web portion containing forming part/parts between web strips, with said one or more forming parts defining in web one or more cavities of predetermined shape; hardening or curing binder and additionally cutting hardened or cured ready web into panels; according to another version, method involves using at least two mineral fiber strips containing non-hardened or non-cured binder; providing lengthwise displacement of mineral fiber strips and additionally compressing one of said one or more of mineral fiber strips; repeating succession of above operations. Mineral fiber panel comprises one or more cavities of predetermined shape, said panel being manufactured by means of various above described methods. Apparatus for manufacture of mineral fiber panels having one or more cavities comprises device for lengthwise displacement of mineral fiber web containing non-hardened or non-cured binder, one or more forming parts for forming in web one or more cavities of predetermined shape, rolls or other means for compressing of web, preferably web portion comprising one or more forming parts, drying in curing furnace for drying or curing of web and/or for simultaneous compression of web portion comprising one or more forming parts, and cutter for cutting of resultant web into panels. According to another version, apparatus is further equipped with one or more dividing tools for dividing mineral fiber web into at least two strips and device for lengthwise displacement of strips, and transfer device for bringing at least two strips together to thereby form laminated web and placing and/or pressing of forming parts in surface/surfaces of strips or in interface surface/surfaces between said strips.
EFFECT: wider range of methods, increased efficiency and improved quality of mineral fiber panels.
29 cl, 12 dwg
