| 摘要 |
The invention relates to a thermal insulation product based on mineral wool comprising mineral fibres, the product comprising two main faces and longitudinal and transversal edges perpendicular to the main faces, the product being characterized by the following levels of orientation: - a longitudinal orientation level greater than or equal to 48%, or even greater than or equal to 50%, at an angle of more or less 6° with respect to the plane of the main faces, when the mineral fibres are counted up only in longitudinal section, and - a mean orientation level greater than or equal to 40%, or even greater than or equal to 45%, at an angle or more or less 6° with respect to the plane of the main faces, when the mineral fibres are counted up both in cross section and in longitudinal section. The invention makes it possible to improve the insulating capability of a thermal insulation product based on mineral wool without increasing the thickness thereof. |
