Method for the production of a web of insulating material...

B - Operations – Transporting – 32 – B

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B32B 17/02 (2006.01) D04H 1/74 (2006.01) D04H 13/00 (2006.01) E04B 1/76 (2006.01)

Patent

CA 2554902

The invention relates to a method for the production of a web of insulating material made of mineral fibres, wherein the mineral fibres are made from a melt and are deposited onto a conveyor as a primary non-woven material; the primary non-woven material is dangled at right angles in relation to the longitudinal extension thereof and is deposited as a secondary non-woven material onto a second conveyor; the secondary non-woven material is then displaced in such a way that the mineral fibres extend at right angles in relation to the large surfaces of the secondary non-woven material and the secondary non-woven material is divided into at least two webs of insulating material by means of a separating cut parallel to the large surfaces of the secondary non-woven material, said webs of material respectively comprising a large surface and a separating surface which has substantially the same area as the large surface and which is arranged opposite said large surface. In order to improve a generic method for the production of a web of insulating material made from mineral fibres such that the web of insulating material can better exhibit or more easily exhibit characteristics such as resistance and processability, particularly in the field of external building surfaces and covering surfaces of pipelines, a coating (39) is applied to at least one of the separating surfaces (36) of the two webs of insulating material (2).

Procédé de fabrication d'une bande de matériau isolant à partir de fibres minérales, selon lequel les fibres minérales sont fabriquées à partir d'une matière fondue et déposées en tant que matière non tissée primaire sur un dispositif de transport, la matière non tissée primaire est pliée en accordéon à angle droit par rapport à son extension longitudinale et déposée en tant que matière non tissée secondaire sur un second dispositif de transport, la matière non tissée secondaire est ensuite déplacée de manière telle que les fibres minérales prennent une orientation essentiellement perpendiculaire aux grandes surfaces de la matière non tissée secondaire et ladite matière non tissée secondaire est alors divisée en au moins deux bandes de matériau isolant par une coupe de séparation parallèle aux grandes surfaces de la matière non tissée secondaire, ces deux bandes possédant chacune une grande surface et une surface de séparation de superficie essentiellement identique et située à l'opposé de la grande surface. Pour améliorer un tel procédé de fabrication d'une bande de matériau isolant en fibres minérales de manière que cette bande de matériau isolant à fabriquer possède des propriétés améliorées de résistance et une maniabilité meilleure ou plus simple, en particulier dans le domaine des surfaces extérieures de bâtiments et des gaines isolantes pour conduites, selon la présente invention, un contrecollage (39) est appliqué sur au moins une des surfaces de séparation (36) des deux bandes (2) de matériau isolant.

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