Stock material or miscellaneous articles – Pile or nap type surface or component
Patent
1988-11-25
1990-03-06
Bell, James J.
Stock material or miscellaneous articles
Pile or nap type surface or component
428141, 428181, 428182, 428703, 428913, 428920, 428284, 428285, B32B 302
Patent
active
049065041
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an exterior, water-repellant facing or covering for buildings for example for roofs or walls in the shape of plates or slabs mounted with overlaps or butt joints on a support with a gradient for drain of rainwater.
Facings or coverings of this type are normally made from hard and compact materials, which are impervious to rain and substantially airtight. Preferred materials are metal, tile, or asbestos cement.
These materials present some drawbacks if an insulating layer is not provided, which is able to prevent large heat transmission or to prevent condensation of humidity on the inside surface of the facing or covering. In storehouses, garages and similar unheated buildings of a simple construction with walls comprising only the layer giving protection against the precipitation condensation of humidity may involve considerable problems, and dripping of condensate may cause serious damage to goods or machinery stored in the building.
The object of the present invention is to provide an exterior facing or covering of the type according to the preamble, in which facing or covering the above drawbacks are eliminated.
According to the invention this object is obtained with a covering or facing which is characterised in that it consists of mineral wool containing a bonding agent, in which mineral wool the direction of the fibers is substantially perpendicular to the external surface.
The invention is based on the observation that mineral wool containing a bonding agent and with the fibers substantially perpendicular to the surface of the mineral wool is repellant to rain and other precipitation. If the fibres are oriented substantially perpendicular to the outer surface of the mineral wool the covering or facing may be considered to be made from transverse-oriented minral wool, and in this position the mineral wool is very resistant to the influence of weathering. The exterior surface may weather in a thickness of a few millimeters, but inside this surface layer the mineral wool will remain intact and preserve its properties, because it is protected by means of the weathered surface layer. As the mineral wool on the other hand is porous and therefor permeable to air and vapour, a condensation cannot take place, and the abovementioned drawbacks of known facings are eliminated. As a consequence it is for example possible to construct a massive covering without a ventilation of the inside of the covering and of for example rafters and battens, which means that the covering or the facing may be included in the insulation of the building. This property also makes the covering impermeable to snow, because there are no ventilated cavities into which the snow may penetrate. The covering as such is also impermeable to snow, as it is possible to construct sealed joints for example be cementing or glueing the joints. Due to the elasticity of the mineral wool there is no need for a plastic joint filler. As the mineral wool further is a poor conductor of heat good insulation properties of the building is obtained.
Transverse-oriented mineral wool, the fibres of which preferably are predominantly oriented perpendicular to the surface compared with normal mineral wool, the fibres of which are oriented in planes parallel with the surface layer, provides a stronger and more weatherproof surface.
The transverse-oriented mineral wool may be produced from mineral fibres, which are collected on a perforated band at the end of a spinning chamber, in which a hardenable bonding agent is atomized. The bonding agent may be a phenolic resin, for example phenol formaldehyde resin, but also flexible forms of phenolic resins, such as latex- or acryl-modified phenolic resins, may be used, as these resins are better suited to withstand the impact from hails or other objects that may hit the facing or covering. The layer of mineral fibres thereafter is compressed and the bonding agent is hardened at the same time and an endless web is formed. The compression should have such an extent that the density of the m
REFERENCES:
patent: 4238257 (1980-12-01), Remi et al.
patent: 4584214 (1986-04-01), Eiermann
Bell James J.
Rockwool International A/S
LandOfFree
Exterior, water-repellant facing or covering for buildings does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Exterior, water-repellant facing or covering for buildings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exterior, water-repellant facing or covering for buildings will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-46660