ES2319701T3 - INSULATING LAYER OF MINERAL FIBER. - Google Patents

Abstract

A method of producing a mineral fiber-insulating web comprises the steps of firstly producing a first non-wowen mineral fiber web. The first mineral fiber web contains mineral fibers arranged generally in the longitudinal direction of the mineral fiber web. Secondly, the first mineral fiber web is moved in the longitudinal direction of the web and folded parallel with the longitudinal direction and perpendicular to the transversal direction of the first mineral fiber web, so as to produce a second mineral fiber web comprising a central body and opposite surface layers sandwiching the central body, which central body contains mineral fibers arranged generally perpendicular to the longitudinal and transversal directions of the second mineral fiber web and which surface layers contain mineral fibers arranged generally in the transversal direction of the second mineral fiber web. Thirdly, a third non-wowen mineral fiber web being a mineral fiber web of a higher compactness as compared to the second mineral fiber web is produced and adjoin in facial contact with the second mineral fiber web for producing a fourth composite mineral fiber web which is thereupon cured. The method also optionally includes longitudinally compressing and/or transversally compressing the second mineral fiber web. The composite mineral fiber web may additionally be combined with additional mineral fiber webs or coverings for producing a composite mineral fiber web product which is cured in a single curing process.

Description

Insulating layer of mineral fiber.

The present invention relates generally to Technical field of mineral fiber insulating plates. Fibers minerals generally comprise fibers such as wool fibers of rock or rockwool, glass fibers, etc. More precisely, the Present invention relates to mineral fiber insulating plates novel. Mineral fiber insulating plates according to the Present invention show advantageous features such as mechanical performance, such as modulus of elasticity and of strength, reduced weight and good insulation properties thermal.

Mineral fiber insulating sheets have been normally produced to date as homogeneous sheets, this it is, leaves in which the mineral fibers of which it is composed the insulating sheet of mineral fiber, are generally oriented with a uniquely predominant orientation that is determined mainly due to the orientation of the production line in the that the mineral fiber insulating sheet is produced and transmitted During the production process of the fiber insulating sheet mineral. The product made from a fiber insulating sheet homogeneous mineral shows characteristics that are determined by the integrity of the mineral fiber insulating sheet and that are predominantly determined by the bonding of mineral fibers inside the mineral fiber insulating plate produced from the mineral fiber insulating sheet, and predominantly determined also for the surface weight and density of mineral fibers of the mineral fiber insulating plate.

The advantageous characteristics of the plates mineral fiber insulators of a different structure have been already done to some extent when techniques were created for production of mineral fiber insulating plates in which mineral fibers are oriented in a different general direction of the orientation determined by the production line, see International Patent Application, International Application No. PCT / DK91 / 00383 published as International Publication No. WO92 / 10602, U.S. Patent No. 4,950,355, Swedish Patent No. 441,764, U.S. Patent No. 2,546,230, and U.S. Patent No. 3,493,452. Reference is made to applications and patents previous. U.S. Patent No. 2,546,230 refers to products  made of continuous glass filaments and the production of such products. The products are composed of a plurality of layers, each formed of continuous glass filaments, which they have substantially corrugated or wavy configurations.

For the previous patent application International publication, International Publication No. WO 92/10602, a method for producing a mineral fiber plate is known insulator composed of mineral fiber elements in the form of interconnected rod. The method includes cutting a fiber sheet mineral continues in the longitudinal direction of it for form sheets, cut sheets to desired lengths, fold the sheets 90º around the longitudinal axis and glue the sheets each other to form the plate. The method also includes a step of Continuous mineral fiber sheet healing or, alternatively, the plate composed of the individual lengths of glued sheets each other for plaque formation.

By Swedish Patent No. 441,764, a technique to produce composite sheets or plates of mineral fiber of rod-shaped elements, whose technique is similar to the technique described in the international patent application described previously. Thus, according to the technique described in the patent Swedish before, a sheet of a mineral fiber material is cut in rod-shaped elements of a specific length that are then folded and reassembled in a plate structure of mineral fiber with the shape of a composite rod in which rod-shaped elements are glued together by means of strips of bonding material that are inserted into openings through-shaped mineral fiber plate structure rod composed in an independent step of production.

From US Patent No. 2,546,230, it is known a technique to produce plates or plates of mineral fiber composed of rod-shaped elements. So, the technique described in US Patent No. 2,546,230 is very similar to the known techniques of the international patent application previously mentioned and from the Swedish patent above mentioned and includes an independent step of pasting the rod-shaped sheets by means of a bonding agent appropriate.

From US Patent No. 3,493,452, it is known a method of producing a fibrous sheet structure that includes filaments or fibers of a polymer material, such as trefalate of polyethylene or polyhexamethyleneditamide. The method includes produce the filaments or fibers of polymer material as measured of a conveyor machine from a supply of filaments or fibers consisting of a porous elastic shale of filaments or fibers, collecting filaments or fibers of material of polymer on a conveyor belt for the formation of a continuous sheet of filaments or fibers of polymer material, compress the sheet, cut the sheet into a series of fiber strips parallel including filaments or fibers of polymer material and folding the fiber strips around the longitudinal axis 90º and putting the strips together, since the strips will only stick by removing a compression effect that has been applied to the strips during the process of folding the strips. The sheet produced in accordance with the technique described in the patent Former American is suitable for manufacturing fabrics such as carpets, blankets, bedspreads, bathrobes etc.

A particular advantage of the present invention is refers to the novel mineral fiber insulating plate according with the present invention that compared to fiber insulating plates prior art ore contains less mineral fibers and consequently it is less expensive than fiber insulating plates prior art ore, having even more advantages when it is compared with the technical mineral fiber insulating plates previous in relation to mechanical performance and properties of thermal insulation.

A particular feature of the invention This refers to the fact that the novel insulating plate of mineral fiber according to the present invention can be produced with less mineral fibers or less material compared to the prior art mineral fiber insulating plate, but providing the same properties as the insulating plate of prior art mineral fiber in relation to performance Mechanical and thermal insulation properties, providing in this way a mineral fiber insulating plate product more lightweight and more compact compared to the plate product prior art mineral fiber insulator, reducing costs of transport, storage and handling.

The previous advantage and features Previous, along with numerous other advantages and features, is achieved by means of an insulating mineral fiber plate of according to the present invention, as defined in the claim one.

The insulating mineral fiber plate according with the present invention preferably comprises layers of opposing surfaces of similar structure superimposed on central body of the integral structure of the insulating plate of mineral fiber

The present invention will be described below. referring to the drawings, in which:

Figure 1 is a schematic and a view in perspective that shows a first production step of the production of an insulating sheet of mineral fiber from a mineral fiber forming casting;

Figure 2 is a schematic and a view in perspective that shows a compaction production step of a mineral fiber insulating sheet;

Figures 3, 4, 5 and 6 are schematics and views in perspective that show four alternative techniques of folding a mineral fiber insulating sheet parallel to the longitudinal direction of the mineral fiber insulating sheet;

Figure 7 is a schematic and a view in perspective that shows a separation production step of a surface layer of folded mineral fiber insulating sheet Produced in accordance with the techniques shown in the Figures 3-6, and a compaction production step of the surface layer;

Figure 8 is a schematic and a view in perspective showing a compression production step cross section of an insulating sheet of mineral fiber produced in the production step shown in Figure 7;

Figure 9 is a schematic and a view in perspective that shows the production step of joining a layer surface, preferably a compacted surface layer, at a mineral fiber insulating sheet, or preferably a part remaining of an insulating sheet of mineral fiber produced according with the techniques described in Figures 3-6, and of which has been separated a surface layer according to the technique described in Figure 7;

Figure 10 is a schematic and a view in perspective that shows a healing production step of a mineral fiber insulating sheet and a separation production step of the insulated sheet of mineral fiber cured in segments of license plate;

Figure 11 is a schematic and a view in section and perspective showing the fiber insulating sheet folded ore produced in accordance with the techniques described in Figures 3-6;

Figure 12 is a schematic and a view in perspective that shows a first embodiment of a segment of mineral fiber insulating plate produced in accordance with the techniques described in Figures 1-10;

Figure 13 is a schematic and a view in perspective showing a second embodiment of a segment of mineral fiber insulating plate produced in accordance with the techniques described in Figures 1-10;

Figures 14 and 15 are diagram views that show the production parameters of a production plant in line that produces insulating plates of buildings in general from of an insulating sheet of mineral fiber produced in accordance with the teachings of the present invention; Y

Figures 16 and 17 are diagram views similar to the views of Figures 14 and 15, respectively, that show the production parameters of a production plant in line that produces fiber heat insulating roof plates mineral from an insulating sheet of mineral fiber produced from according to the teachings of the present invention.

In Figure 1, a first step of Production of an insulating sheet of mineral fiber. The first step includes the formation of mineral fibers from a wash mineral fiber former that is produced in an oven 30 and that is supplied by a discharge tube 32 of the oven 30 to a total four-wheel swivel quick-turn 34 which are given supplies the jet-shaped mineral fiber casting of mineral fiber forming smelter 36. When the jet of mineral fiber forming casting 36 is supplied to the wheels rotating 34 in a radial direction relative to them, a jet of Gas cooler is supplied simultaneously to the wheels swivel swivels 34 in the axial direction thereof leading to the formation of individual mineral fibers that are expelled or pulverized from the swivel castors 34, as indicated by reference number 38. The pulverized mineral fiber 38 is collected on a first tape conveyor 42 continuously operated forming an insulating sheet of primary mineral fiber 40. A heat curable bonding agent It is also added to the insulating sheet of primary mineral fiber 40, either directly to the primary mineral fiber insulating sheet 40 or to the expulsion stage of mineral fibers from the wheels rotating 34, that is, at the stage of fiber formation individual minerals The first conveyor belt 42 is composed, as will be evident from Figure 1, of two sections Conveyor belt A first section of conveyor belt is inclined relative to the horizontal direction and with relation to a second section of conveyor belt substantially horizontal. The first section constitutes a collector section, while the second section constitutes a transport section by means of which the fiber insulating sheet primary mineral 40 is transferred to a second and a third continuously operated conveyor belt designated with the number reference 44 and 46, respectively, which are operated synchronously with the first conveyor belt 42 superimposing the insulating sheet of primary mineral fiber 40 two adjacent surfaces of the second and third conveyor belt 44 and 46, respectively.

The second and third conveyor belt 44 and 46, respectively, communicate with a fourth tape conveyor 48 which is a collecting conveyor belt on which is collected an insulating sheet of secondary mineral fiber 50 when the second and third conveyor belt 44 and 46, respectively, they are swung across the surface width top of the fourth conveyor belt 48 in the direction in relation to the fourth conveyor belt 48. The 50 secondary mineral fiber insulating sheet is produced consequently arranging the insulating sheet of mineral fiber primary 40 in overlap ratio generally in the cross direction of the fourth conveyor belt 48.

When producing mineral fiber insulating sheet secondary 50 from the mineral fiber insulating sheet primary 40 as shown in Figure 1, a sheet is formed 50 more homogeneous secondary mineral fiber insulator compared with the least homogeneous insulating sheet of primary mineral fiber.

It should be understood that the general orientation of The mineral fibers of the primary mineral fiber insulating sheet 40 is parallel to the longitudinal direction of the sheet 40 and to the direction of transport of the first conveyor belt 42. Al contrary to the primary mineral fiber insulating sheet 40, the general orientation of the mineral fibers of the insulating sheet of secondary mineral fiber 50 is substantially perpendicular and transverse in relation to the longitudinal direction of the leaf secondary mineral fiber insulator 50 and to the direction of transport of the fourth conveyor belt 48.

Figure 2 shows a station for compact and homogenize an insulating mineral fiber sheet entry 50 ', whose station aims to compact and homogenize the 50 'mineral fiber insulating sheet to produce an insulating sheet of 50 '' output mineral fiber, whose 50 '' mineral fiber insulating sheet is more compact and more homogeneous compared to the mineral fiber insulating sheet of 50 'entry. The insulating mineral fiber sheet 50 'can be the secondary mineral fiber insulating sheet 50 produced in the station shown in Figure 1.

The compaction station comprises two sections. The first section comprises two conveyor belts 52 '' and 54 '', which are arranged on the upper side surface and on the lower side surface, respectively, of the mineral fiber sheet 50 '. The first section basically constitutes a section in which the 50 'mineral fiber sheet entering the section is exposed to a high compression, causing a reduction in the overall height of the mineral fiber sheet and a compaction of the sheet mineral fiber The conveyor belts 52 '' and 54 '' are thus arranged in a manner in which they are narrowed from an inlet end to the left side of Figure 2 at whose inlet end the mineral fiber sheet 50 'enters the first section, towards an outlet end, from which the compressed height mineral fiber sheet is passed to the second section of the station
compaction

The second section of the station compaction comprises three sets of rollers 56 'and 58', 56 '' and 58 '', and 56 '' 'and 58' ''. The rollers 56 ', 56' 'and 56' '' are arranged on the surface of the upper side of the fiber sheet mineral, while rollers 58 ', 58' 'and 58' '' are arranged on the surface of the bottom side of the fiber sheet mineral. The second section of the compaction station provides a longitudinal compression of the fiber sheet mineral, said longitudinal compression provides a homogenization of the mineral fiber sheet, since it makes the mineral fibers of the mineral fiber sheet are reorganized into a more homogeneous structure compared to the original structure. The three roller assemblies 56 'and 58', 56 '' and 58 '', and 56 '' 'and 58 '' 'of the second section are spun at the same speed as turn which, however, is lower than the turn speed of the 52 '' and 54 '' conveyor belts of the first section, causing Longitudinal compression of the mineral fiber sheet. Leaf mineral fiber compressed in height and compressed longitudinally is taken from the compaction station shown in Figure 2, indicated with the reference number 50 ''.

It should be understood that the compaction station of combined compression of height and length shown in Figure 2 can be modified by omitting one of the two sections, that is, that the first section constitutes the section of height compression or, alternatively, the second section constitute the longitudinal compression section. With the omission of one of the two sections of the compaction station shown in Figure 2 provides a compaction section that performs a single compaction or compression operation, such as a height compression station or alternatively a station of longitudinal compression Although the height compression section has been described including conveyor belts, and the section of Longitudinal compression has been described including rollers, both Sections can be made by means of tapes or rollers. In addition, the height compression section can be performed by roller means, and the longitudinal compression section can be made by means of conveyor belts.

In Figures 3, 4, 5 and 6 four are shown alternative techniques for folding a fiber insulating sheet mineral in the longitudinal direction. In Figures 3, 4, 5 and 6 the 50 '' mineral fiber insulating sheet can be the insulating sheet of 50 '' output mineral fiber shown in Figure 2 or, alternatively, the mineral fiber insulating sheet 50 produced in the station shown in Figure 1.

In Figure 3, the fiber insulating sheet mineral 50 '' is brought into contact with a compression roller 51, whereby a continuous sheet 99 of a material thermoplastic is applied to the surface of the upper side of the 50 '' mineral fiber insulating sheet. A roll 98 supplies the continuous sheet of thermoplastic material. After the continuous sheet 99 has been applied to the side surface top of the 50 '' mineral fiber insulating sheet, the sheet 50 '' mineral fiber insulator and continuous sheet 67 applied to she is passed through a 60 'corrugated gate, said gate comprises two corrugated guide plates 64 'and 66' arranged in opposition and two end walls arranged in opposition, one of which is indicated by the number of reference 62 '. As will be readily understood, sheet 99 should have an elasticity that allows sheet 99 and sheet 50 '' mineral fiber insulator be folded. The walls of end of the 60 'corrugated gate and the undulations of the 64 'and 66' corrugated gate plates narrow from a 60 'corrugated gate inlet end to one end of Departure from it. When the 50 '' mineral fiber insulating sheet and sheet 99 applied to it is passed through the 60 'corrugated gate, the mineral fiber insulating sheet is folded in its longitudinal direction providing a sheet mineral fiber insulation 50 '' corrugated and folded longitudinally.

A technique is shown in Figure 4 alternative to produce the 50 '' 'mineral fiber insulating sheet corrugated and folded longitudinally. The technique shown in the Figure 4 differs from the technique described above with reference to Figure 3 in which a gate 60 '' is used, said 60 '' gate differs from the 60 '' corrugated gate shown in Figure 3 in which the gate 60 '' comprises flat walls arranged in opposition, one of which is indicated with the reference number 64 '' and curved end walls one of the which is indicated with the reference number 62 ''.

A technique is shown in Figure 5 additional alternative to produce a fiber insulating sheet mineral 50 '' 'folded longitudinally, from the leaf 50 '' flat mineral fiber insulator. Fiber insulating sheet mineral 50 '' 'corrugated and longitudinally folded agrees with the technique shown in Figure 5 produced by means of a 60 '' 'roller assembly comprising flat end walls 62 '' 'that have the same objective as the end walls flat 62 'and curved end walls 62' 'shown in the Figures 3 and 4, respectively, that is, the purpose of guiding the outer edges of the 50 '' flat mineral fiber insulating sheet to the corrugated and longitudinally folded configuration of the 50 '' mineral fiber insulating sheet. The roller assembly 60 '' ' It also comprises a total of eight sets of rollers, each roller assembly contains two rollers arranged on sides opposite of the mineral fiber insulating sheet. In Figure 5 there are two rollers indicated with reference number 68. The assemblies  of rollers define a narrowing configuration that is narrow from an inlet end of the roller assembly 60 '' ' to an exit end thereof from whose exit end is supplies the 50 '' 'corrugated mineral fiber insulating sheet folded longitudinally. The narrowing configuration has as an object to help the 50 '' mineral fiber insulating sheet Corrugate and fold longitudinally in the configuration of the 50 '' 'folded mineral fiber insulating sheet shown in Figure 5.

A technique is shown in Figure 6 additional alternative to produce a fiber insulating sheet mineral 50 '' 'folded longitudinally. According to the technique shown in Figure 6, a station 60 '' '' is used, said station constitutes a combination of compression station height / length and a cross folding station. So, the Station 60 '' '' comprises a total of six sets of rollers, three sets of which consist of three sets of rollers 56 ', 58'; 56``, 58 ''; and 56 '' ', 58' '' that have been mentioned above with reference to Figure 2.

Station 60 '' '' shown in Figure 6 it also comprises three sets of rollers, a first set of they are constituted by two rollers 152 'and 154', a second set of which consists of two rollers 152 '' and 154``, and a third set of which consists of two 152 '' 'and 154' '' rollers. The 152 ', 152' 'and 152' '' rollers are arranged on the surface of the upper side of the insulating sheet 50 '' mineral fiber, same as 56 ', 56' 'and 56' 'rollers. The three rollers 154 ', 154' 'and 154' '' are arranged in the surface of the lower side of the mineral fiber insulating sheet 50``, same as rollers 58 ', 58' 'and 58' ''. The three sets of rollers 152 ', 154'; 152``, 154 ''; and 152 '' ', 154' '' have the same objective as the 52 '', 54 '' tape sets of which You have spoken before with reference to Figure 2, that is, the object to compress the height of the mineral fiber insulating sheet 50 '' entering the station 60 '' ''.

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The three sets of compression rollers of height 152 ', 154'; 152``, 154 ''; and 152 '' ', 154' '' are similar to the tape sets described above 52 '', 54 '' operated at a rotation speed identical to the speed of the insulating sheet 50 '' mineral fiber that enters the compression section of station height 60 '' ''. The three roller sets they constitute the longitudinal compression section, that is, the rollers 56 ', 58'; 56``, 58 ''; and 56 '' ', 58' '', are operated at a reduced turning speed by determining the compression ratio longitudinal.

To generate the longitudinal folding of the sheet 50 '' mineral fiber insulator entering the 60 '' '' station, shown in Figure 6, four crankshaft assemblies are arranged indicated with reference numbers 160 ', 160' ', 160' '', and 160 '' ''. The crankshaft assemblies have identical structures, and in the description that follows describes a single crankshaft assembly, crankshaft assembly 160 '', since the crankshaft assemblies 160 ', 160' '' and 160 '' '' are identical to crankshaft assembly 160 '' and comprise elements identical to crankshaft assembly 160 '', however, are indicated with the same reference number by adding a single, double or triple quote, respectively.

The crankshaft assembly 160 '' includes an engine 162 '', which drives a gear set 164 '', from which an output shaft 166 '' extends. A total of six gear wheels 168 '' of identical configurations are mounted on the shaft of exit 166 ''. Each of the 168 '' sprockets meshes with a corresponding sprocket 170 ''. Each of the wheels Toothed 170 '' constitutes a driving wheel of a system of crankshaft levers that also includes a 172 '' idler wheel and a crankshaft lever 174 ''. The crankshaft levers 174 '' are arranged to be raised from a retracted position to an elevated position between two adjacent rollers located at the right, bottom side of 50 '' mineral fiber insulating sheet which enters the station 60 '' '' and are adapted to cooperate with the crankshaft levers of the crankshaft levers system 160 ' located on the right, upper side of the fiber insulating sheet 50 '' mineral entering station 60 '' ''.

Similarly, the crankshaft levers of the crankshaft levers systems 160 '' 'and 160' '' ', arranged to the left, upper and lower side, respectively, of the leaf 50 '' mineral fiber insulator entering the 60 '' '' station, are adapted to cooperate in a way that describes continuation.

As will be apparent from Figure 6, a first set of crankshaft levers 174 ', 174' ', 174' '', 174 '' ''  of crankshaft levers systems 160 ', 160' ', 160' '', 160 '' '' are located between the first and second sets of rollers 152 ', 154' and 152 '', 154 ''. Similarly, a second set of crankshaft levers are located between the second and third set of rollers 152 '', 154 '' and 152 '' ', 154' ''.

The crankshaft levers of each of the six Total lever assemblies have identical widths. Within each of the crankshaft lever systems 160 ', 160' ', 160' '' and 160 '' '', the first crankshaft lever is the widest lever of the crankshaft, and the width of the crankshaft lever within each crankshaft lever system is reduced from the first crankshaft lever to the sixth crankshaft lever located behind the sixth set of rollers 56 '' ', 58' ''.

Through the engines of the sets of crankshaft 160 ', 160' ', 160' '' and 160 '' '', the crankshaft levers of a specific crankshaft assembly are spun in sync with the three remaining crankshaft levers of the set of levers Crankshaft in question. The crankshaft levers of all six sets of crankshaft levers are also operated in sync and in sync with the blade speed 50 '' mineral fiber insulator entering the 60 '' '' station. The wider the first set of crankshaft levers is adapted to start folding the 50 '' mineral fiber insulating sheet, when the crankshaft levers 174 '' and 174 '' '' of the crankshaft lever 160 '' and 160 '' '', respectively, are raised from positions below the surface of the lower side of the insulating sheet of mineral fiber 50 '' and they are put in contact with the surface of the bottom side of the fiber insulating sheet mineral 50 '', and when the crankshaft levers 174 'and 174' '' of the crankshaft levers systems 160 'and 160' '', respectively, they are lowered simultaneously from positions above the surface of the upper side of the mineral fiber insulating sheet 50 '' and placed in contact with the surface of the upper side of the 50 '' mineral fiber insulating sheet.

Additional rotation of output shafts 166 ', 166``, 166 '' 'and 166' '' 'makes the crankshaft levers of the first set of crankshaft levers are moved towards the center of the 50 '' mineral fiber insulating sheet, producing a folding 50 '' mineral fiber insulating sheet center. When the crankshaft levers of the first set of crankshaft levers they reach the central position, the crankshaft levers of the crankshaft lever systems 160 'and 160' '' 'while the crankshaft levers of the lever systems of crankshaft 160 '' and 160 '' 'and consequently disconnect from the surfaces of the upper and lower sides, respectively, of the 50 '' mineral fiber insulating sheet.

When the 50 '' mineral fiber insulating sheet keep going through station 60 '' '', the next or second set of crankshaft levers generates a second and a third folding of the 50 '' mineral fiber insulating sheet, whose second or third fold is placed on sides opposite the first folded, bringing the third, fourth, fifth and sixth sets of crankshaft levers produce additional blade folds mineral fiber insulator, producing a longitudinal fold Mineral fiber insulating sheet set.

The width of the crankshaft levers of each set of crankshaft levers, the transmission ratio of gear sets 164 ', 164' ', 164' '' and 164 '' '', the ratio of transmission of gear wheels 168 and 170, and the speed of the 50 '' mineral fiber insulating sheet entering the station 60 '' '' are adapted to each other and also to the speed of rotation of the compression height and compression sections longitudinal of the station to produce the fiber insulating sheet 50 '' 'mineral with longitudinal folding, and height compression and longitudinal.

The compression section integration of height, longitudinal compression section and the section of longitudinal folding in a single station, as described previously with reference to Figure 6, it is, of course, mandatory for the operation of folding crankshaft systems Longitudinal described above with reference to Figure 6. Therefore, the height compression section, the section of Longitudinal compression and longitudinal folding section can be separated, however, the integration of the three functions reduces the overall size of the production plant. In addition, you must It is understood that the folding of the mineral fiber insulating sheet, as discussed above with reference to Figures 4, 5 and  6 provides a compaction and transverse compression of the sheet, also providing a homogenization of the sheet in comparison with the folded entry sheet.

Figure 11 shows a view of a vertical section of the 50 '' 'mineral fiber insulating sheet corrugated and folded longitudinally. Fiber insulating sheet mineral 50 '' 'corrugated and longitudinally folded comprises a core or central body 28 and two surface layers 24 and 26 arranged in opposition, said surface layers 24 and 26 are separated from the core or central body 28 of the insulating sheet of mineral fiber 50 '' 'corrugated and folded longitudinally along the imaginary separation lines 20 and 22, respectively. The surface layers 24 and 26 of the sheet mineral fiber insulation 50 '' corrugated and folded longitudinally they are composed of segments of the insulating sheet mineral fiber, these segments contain mineral fibers that are oriented substantially transverse in relation to to the longitudinal direction of the mineral fiber insulating sheet 50 '' corrugated and folded longitudinally. The insulating sheet of mineral fiber 50 '' 'corrugated and longitudinally folded is Produced from the mineral fiber insulating sheet 50 secondary folding the secondary 50 mineral fiber insulating sheet, optionally after compacting the fiber insulating sheet secondary mineral 50, as will be described below by doing reference to Figure 8, and the joint orientation of the fibers mineral insulating sheet mineral fiber secondary 50 is consistently maintained within the leaf segments mineral fiber insulation 50 '' corrugated and folded longitudinally whose segments together constitute the layers superficial 24 and 26.

The core or central body 28 of the blade mineral fiber insulation 50 '' corrugated and folded longitudinally it is composed of segments of the insulating sheet 50 '' 'folded mineral fiber whose segments are folded perpendicular to the segments of the surface layers 24 and 26 of the 50 '' mineral fiber insulating sheet. Mineral fibers of the core or central body 28 of the mineral fiber insulating sheet 50 '' 'corrugated and longitudinally folded are oriented consequently substantially perpendicular to the longitudinal direction as well as to the transverse direction of the insulating sheet of mineral fiber 50 '' corrugated and folded longitudinally.

50 '' 'mineral fiber insulating sheet corrugated and longitudinally folded shown in Figure 9 and Produced in accordance with the techniques mentioned above with reference to Figures 3, 4, 5 and 6 is further processed in a station shown in Figure 7, at whose station the layer surface 24 is separated from the core or central body 28 of the insulating sheet of mineral fiber 50 '' corrugated and folded longitudinally along the imaginary separation line 20, shown in Figure 9. The separation of the surface layer 24 of the remaining part of the mineral fiber insulating sheet is performed by means of a cutting tool 72 when the part Remaining mineral fiber insulating sheet is supported and transported by means of a conveyor belt 70. The cutting tool 72 may consist of a tool stationary cutter or blade or be constituted alternatively by a reciprocating cutting tool cross. The surface layer 24 separated from the insulating sheet of mineral fiber is derived from the part's transport path remnant of the mineral fiber insulating sheet by means of a conveyor belt 74 and is transferred from the belt conveyor 74 to three sets of rollers comprising a first set of rollers 76 'and 78', a second set of 76 '' and 78 '' rollers, and a third set of 76 '' 'rollers and 78 '' ', whose three sets of joined rollers constitute a compaction or compression section similar to the second section of the corresponding station described above in relation to Figure 2.

Figure 8 shows a station of transverse compression, which is indicated entirely with the reference number 80. At station 80, the core or body central 28 or alternatively the mineral fiber insulating sheet 50 '' 'corrugated and folded longitudinally, produced in one of the stations described above with reference to Figures 3, 4, 5 and 6 is brought into contact with two conveyor belts 85 and 86, which define a constriction whereby the mineral fiber insulating sheet is compressed transversely and contact with a total of four agitator rollers of surface 89a, 89b, 89c and 89d which together with similar rollers, do not shown in the drawing, arranged in opposition to rollers 89a, 89b, 89c and 89d are intended to help provide a transverse compression of the core or central body 28. Tapes Conveyors 85 and 86 are driven by rollers 81, 83 and 82, 84, respectively.

From the transverse compression station 80 a compressed and compacted core or core 28 'is supplied  transversely. When the core or central body 28 is transmitted through transverse compression station 80 and transformed into the core or central body 28 'compressed transversely, the core or body is supported by rollers consisting of an input roller 87 and an output roller 88.

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Although the core or central body 28 that enters in the transverse compression station 80 it is constituted preferably by the core or central body above described separately from the 50 '' mineral fiber insulating sheet, as described above with reference to Figure 7, the sheet 50 '' mineral fiber insulator can alternatively be processed by station 80 shown in Figure 8.

Provided that the core or central body 28 of the 50 '' 'mineral fiber insulating sheet to be compressed transversely inside station 80 be provided with a layer upper surface, such as sheet 99 described above With reference to Figure 3, the sheet should be of a structure compatible with cross compression of the blade assembly and sheet. Thus, the sheet applied to the upper lateral surface of 50 '' mineral fiber insulating sheet, as shown in the Figure 3, must be compressible and adaptable to the reduced width of the core or central body 28 'compressed transversely or of the insulating sheet of transversely compressed mineral fiber that comes out of the transverse compression station 80.

When the compaction of the separate surface layer 24, as described above with reference to Figure 7, the compacted surface layer 24 is returned to the remaining part of the mineral fiber insulating sheet or to the core or central body, which has been preferably compressed as described above with reference to Figure 8, and joined in facial contact with the upper surface of the nucleus or central body 28, as shown in Figure 9.

In Figure 9, a set of rollers that it comprises a roller 79 'and a roller 79' 'arranged on the sides upper and lower surface of surface layer 24, respectively, they constitute a set of rollers by means of the which a surface sheet 99 'supplied from a roll 98' is applied to the upper side of the surface of the surface layer compacted 24. From rollers 79 'and 79' ', the surface layer 24 which constitutes an insulating sheet of integral mineral fiber of greater compaction compared to the core or central body 28, is slid to the upper side of the core surface or central body 28 by means of two rollers 77 'and 77' '. He roller 77 '' is located below the surface layer 24 and is a rotating roller, while roller 77 ', which is located above the top side of the layer surface surface 24, aims to press on the layer surface compacted 24 to make facial contact with the side upper surface of the core or central body 28, which is supported and transported by means of the transport belt 70 also shown in Figure 7. After the surface layer compacted 24 has been brought into facial contact with the upper side of the surface of the core or central body 28, a mineral fiber insulating sheet set, said set is indicated in its entirety with reference number 90.

An additional sheet is shown in Figure 9 99 'with a dashed line. This sheet is supplied by a roll 98 ''. The sheet 99 'can be a continuous sheet or alternatively a mesh sheet, that is, a sheet similar to surface sheet 99 'described above. Must be done emphasize, however, that sheets 99, 99 'and 99' ' they constitute optional features that can be omitted, whenever you want to produce an insulating sheet structure of mineral fiber Alternatively, one or more of the sheets previously mentioned, or all the sheets, can be arranged in various embodiments of the fiber insulating sheet ore produced in accordance with the teachings of the invention Present.

It should be understood that the surface layer compacted 24 which is separated from the mineral fiber insulating sheet 50 '' '' as shown in Figure 7, can be provided alternatively by an independent production line, such as one of the production stations shown in Figures 3, 4, 5 and 6 and can communicate directly with the production station shown in Figure 9, optionally by means of the station production shown in Figure 8, thus eliminating the station of production shown in Figure 7. Preferably, the station of production shown in Figure 7 is adapted to separate two layers surface of the core or central body 28 to produce two independent surface layers separated from the surfaces of the opposite side of the core or central body 28, whose layers surface are processed according to the technique described above with reference to Figure 7 for the formation of two high compaction surface layers that, according to the technique described above with reference to Figure 9, are attached to the core or central body 28 on opposite surfaces of the same, producing an overlap of the core or central body 28, which preferably has been transversely compressed as described above with reference to Figure 8, between two layers of opposite surfaces similar to surface layer 24 shown in Figure 9.

In Figure 10, the insulating sheet assembly of 90 mineral fiber is passed through a healing station that is consisting of a cure oven or healing boiler that comprises healing oven sections 92 and 94 arranged in opposition, which generate heat to cure the insulating sheet assembly of 50 mineral fiber at an elevated temperature to make the heat-curable bonding agent of the insulating sheet assembly of mineral fiber heals and causes the core mineral fibers or central body of the whole and the mineral fibers of the layer or compacted surface layers (s) stick together to form an insulating sheet of mineral fiber glued, whole, which is cut into plate-shaped segments by means of a blade 96. Provided blade 99 is provided and optionally continuous sheets 99 'and 99' ', the material thermoplastic sheets 99, 99 'and 99' 'also melts, providing additional bonding of the mineral fibers of the mineral fiber insulating sheet. In Figure 10, a single 10 '' segment similar to a plate comprising a core central 12 and an upper layer 14. The upper layer 14 is made to starting from the compacted surface layer 24, while the core it is made from the core or central body 28 of the blade mineral fiber insulation 50 '' corrugated and folded longitudinally shown in Figure 9.

A view is shown in Figure 12 fragmentary and in perspective of a first embodiment of a plate segment of an insulating mineral fiber sheet according with the present invention, indicated by reference number 10 in its totality The plate segment 10 comprises the central core 12 and the top layer 14 and also a bottom layer 16 made of a 50 '' mineral fiber insulating sheet surface layer. He reference number 18 indicates a segment of core 12 of the plate segment 10 whose segment 18 is made of the core or central body 28 of the 50 '' 'mineral fiber insulating sheet corrugated and folded longitudinally, whose core or central body has been compressed transversely preferably as described above with reference to Figure 8.

A view is shown in Figure 13 fragmentary and in perspective of a second embodiment of a plate segment of an insulating mineral fiber sheet according with the present invention, indicated with the reference number 10 ' In its whole. As the plate segment 10, described previously with reference to Figure 12, the plate segment 10 'comprises the central core 12, the top layer 14 and the layer of bottom 16. In addition, a cover 15 is provided to the surface upper, which is constituted by the sheet 99 'described above with reference to Figure 9. Cover 15 of the upper surface can be a sheet of plastic materials, a woven or non-woven plastic sheet or, alternatively, a cover  made of non-plastic materials, such as a paper material whose objectives are exclusively architectural and design. The layer 15 of the upper surface can be applied alternatively to the mineral fiber insulating sheet after the cure of heat-curable bonding agent, that is, after Exposure of 90 mineral fiber insulating sheet to heat generated by oven sections 92 and 94 shown in Figure 10.

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Example 1

A heat insulating plate is produced from a structure similar to the plate shown in Figure 12, made of a mineral fiber insulating sheet produced according to the method described above with reference to the Figures 1-10, according to the memory shown at continuation:

The method comprises steps similar to the steps described above with reference to Figures 1, 2, 6, 7, 8, 9 and 10. The output of the production of the plant is 5,000 kg / h. He surface weight of the primary sheet produced at the station described in Figure 1 is 0.4 kg / m2, and the width of the sheet Primary is 3,600 mm. The density of the core or central body 28 is 20 kg / m 3. The longitudinal compression ratios produced in two separate stations similar to the station described in the Figure 2 are 1: 1 and 1: 2, respectively, and the ratio of transverse compression produced in the station described in the Figure 8 is 1: 2. The end plate comprises a surface layer single of a surface weight of 1 kg / m2. The relationship of Longitudinal compression of the surface layer is 1: 2. The spesor of the surface layer is 10.00 mm, and the density of the layer Superficial is 100 kg / m3. The width of the insulating sheet of Mineral fiber produced in Figure 1 is 1,800 mm.

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(Table goes to page next)

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The production parameters used are shown below in Tables A and B:

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TABLE A

one

TABLE B

2

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Figure 14 shows a diagram that indicates the correspondence between the parameters listed in the Table A. The reference signs used in Figure 14 refer to the parameters listed in Table A.

Figure 15 shows a diagram that indicates the correspondence between the parameters listed in the Table B. The reference signs used in Figure 15 refer to the parameters listed in Table B.

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Example 2

A roof plate is produced consisting of a structure similar to the plate shown in Figure 12, made to from an insulating sheet of mineral fiber produced according with the method described above with reference to the Figures 1-10, according to the memory shown at continuation:

The method comprises steps similar to the steps described above with reference to Figures 1, 2, 6, 7, 8, 9 and 10. The production output of the plant is 5,000 kg / h. The weight surface of the primary sheet produced at the station described in Figure 1 is 0.6 kg / m2, and the width of the primary sheet is 3,600 mm The density of the core or central body 28 is 110 kg / m 3. The longitudinal compression ratios produced in two independent stations similar to the station described in the Figure 2 are 1: 3 and 1: 2, respectively, and the compression ratio Transversal produced at the station described in Figure 8 is 1: 2. The end plate comprises a single surface layer of a weight surface area of 3.57 kg / m2. Compression ratio Longitudinal surface layer is 1: 2. Layer thickness surface is 17.00 mm, and the density of the surface layer is 210 kg / m 3. The width of the mineral fiber insulating sheet produced in Figure 1 is 1,800 mm.

The production parameters used are shown below in Tables C and D:

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TABLE C

3

TABLE D

4

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A similar diagram is shown in Figure 16 to the diagram in Figure 14, which shows the correspondence between the parameters listed in Table C.

A similar diagram is shown in Figure 17 to the diagram in Figure 15, which shows the correspondence between the parameters listed in Table D.

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Example 3

The importance is highlighted below of exposing the mineral fiber insulating sheet to compression longitudinal and transverse by means of the data presented in the Table AND.

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TABLE E

5

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Mineral fiber insulating plates according with the present invention clearly show an increase in resistance to pressure and modulus of elasticity compared with a conventional heat insulating plate. Mechanical performance of mineral fiber insulating plates according to this invention increases further, however, exposing the insulator sheet of ore, from which the insulating plates are produced, with longitudinal and transverse compression, as stated above with reference to Figure 2 and Figure 8.

Claims (2)

1. An insulating mineral fiber plate (10, 10 ', 10 '') defining a plane and comprising:

a body central (12) containing mineral fibers,

a Cape surface (14, 16) containing mineral fibers, being together said central body (12) and said surface layer (14, 16) in facial contact with each other,

being arranged said mineral fibers of said central body (12) perpendicularly in general to said plane and said layer superficial,

being told surface layer (14, 16) of greater compactness compared to said central body (12),

that is characterized because said mineral fibers of said layer surface (14, 16) are generally arranged in one direction parallel to said plane, said fibers being glued together minerals of said central body (12) and said mineral fibers of said surface layer (14, 16) to form an insulating plate of integral mineral fiber only by means of bonding agents cured that have been cured in a single healing process and that they are initially present in uncured mineral fiber sheets, not woven from which said central body is produced (12) and said surface layer (14, 16). 2. Mineral fiber insulating plate according with claim 1, comprising surface layers in opposition (14, 16) of similar structure, superimposed on said central body (12) in said mineral fiber insulating plate full.