IL33853A - Prefabricated building panels and a method for their manuf - Google Patents

Description

Prefabricated paxiels and a method for thoir LSD This invention relates to prefabricated building panels and to methods for their The invention relates specifically to a prefabricated building hereinafter referred to as prefabricated building panel of the kind comprising a pair of cementitious layers formed integrally with each other and separated by an insulating It is known to manufacture prefabricated building panels of the kind specified wherein one of said is cast a concrete slab having upturned end a layer of relatively rigid insulating material such as polystyrene being deposited on this slab on to which is cast the second cementitious layer which sets integrally with the upturned walls of the first In this way the ibricated building panel already includes its own thermal acoustic The use of foamed polystyrene for insulation purposes is accompanied by In particular the use of such an insulating material is not to be recommended where the building panels are likely to be subjected to very high temperatures in which case the insulating material is likely to It is accordingly an object of the present invention to provide a building of the kind specified wherein the above referred to disadvantagas are substantially avoided or According to the present invention there is provided a prefabricated building panel of the kind specified wherein said insulating component comprises a first layer of a tivel soft insulatin material ca able of withstandin substantially high temperatures and a second layer of relatively rigid material said first layer being of substantially greater thickness than said second said first layer is constituted by slabs of wool 3uch as rock wool whereas said second layer is material such as constituted by a relatively thin layer of Such an allows one to take advantage of the heat g properties of mineral wool allied with its relative cheapness and at the same time to come the disadvantages inherent in the relative softness of the mineral wool by this mineral wool with a thin layer which of the relatively to its relative rigidity allows for the thereon of the second One embodiment of the present invention will now be described by way of example and with reference to the ing drawing which is a schematic sectioned elevation of a portion of a prefabricated building panel in accordance with the present As seen in the the panel consists of a concrete base layer 1 having upturned side walls the base layer 1 and the side walls 2 thereby constituting a Located on the base layer 1 ar successive panels of rock wool enclosed in polyethylene Located on the rock wool panels is a relatively thin layer of foamed polystyrene 4 the latter being covered by a layer of waxed paper On this assembly there is cast a second concrete 6 owing to the relative rigidity of the polystyrene layer is prevented from penetrating into the relatively soft rock wool layer The concrete layer 6 forms an whole with the end walls one characteristic example in accordance the the rock wool layer of thickness whilst the polystyrene layer 4 1 cm insufficientOCRQuality

Claims (1)

1. i3 A prefabricated building panel of the kind specified said insulating component a first layer of a relatively soft insulating capable of withstanding fjubatantially high temperatures and a second layer of relatively rigid material said first layer of substantially greater thickness than said second A prefabricated building panel according to Claim 1 wherein said second layer is an insulating A prefabricated building panel according to Claim 1 or said first layer is formed of A ted building panel according to wherein said first layer is formed of rock A prefabricated building panel according to any one of the preceding Claims wherein said second layer is formed of foamed A prefabricated building panel substantially as hereinbefore described by way of example and with reference to the accompanying A method of manufacturing a prefabricated building panel according to any one of the preceding Claims comprising the steps of successively depositing said first and second layers on a first layer and casting said second cementitious layer on said the Applicants insufficientOCRQuality