BG99828A - Method for the production of insulation strips of mineral fibres, plant for its manufacture and a mineral fibres insulated plate - 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

The present invention relates mainly to the technical field of mineral fiber-insulating plates. Typically, the mineral fibers include fibers such as silicon wool fibers, glass fibers, etc. More specifically, the present invention relates to a novel technique for the production of mineral fiber-insulating webs from which mineral fiber-insulating plates are cut. Mineral insulating plates fibers made from the mineral fiber-insulating web produced according to the present invention show a number of favorable characteristics with respect to the mechanical properties such as the elastomer module chnost and strength, low weight and good toploizo translational capability. The mineral fiber-insulating strips have so far been produced as homogeneous strips, i. E. tapes in which the mineral fibers of which the mineral fiber-insulating web is composed are oriented in principle in a single dominant direction, which is determined by the orientation of the production line on which the mineral insulating tape is produced and transported fibers in the process of producing a mineral fiber-insulating web. The extrusion, made of a homogeneous mineral fiber-insulating tape, has characteristics that determine the integrity of the mineral fiber-insulating web and are predominantly conditioned by the connection of the mineral trains inside the mineral fiber-insulating plate produced by a mineral fiber-insulating web, and also the weight per unit surface or the density of the mineral fibers in the mineral fiber-insulating plate. The advantageous characteristics of insulating slabs of abrasive fibers of different structure have been realized to some extent by techniques developed for the production of mineral fiber-insulating plates in which the mineral fibers are directed in a common direction different from the one defined of the production line, see International Published Patent Application, International Application No. PCT / F91 / 00383, International Publication No. FP092 / 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. It's done

The above-mentioned patent applications and patents and the above U.S. patents are incorporated in the present specification of polytethral references. From International Patent Application Publication No. WO92 / 10602, cited above, a known method for the manufacture of a mineral fiber-insulating plate made up of mineral fiber-reinforced rods. The method involves cutting the continuous mineral fiber web along the strip in order to obtain the lamellae, cutting the lamellae of the desired length, rotating the lamellae at 90 ° about the longitudinal axis, and bonding the plates to one another to form the plate. The method also includes a process step for curing the continuous mineral fiber web or, alternatively, to the slab formed by the particular lengths of the lamellae connected to each other to form the plate. From Swedish Patent No. 441,764 there is a known technique for the production of mineral fiber boards or slabs made of rod-like elements, which technique is similar to the technique described in the above-mentioned international patent applications. For example, according to the technique described in the above-mentioned Swedish patent, a strip of some mineral fiber material is cut into rod-shaped elements of a specific length which are then inverted and rearranged into a complex rod-like structure of a mineral fiber plate, in which the rod elements are glued together by means of connecting fibers which are introduced into the leading aperture of the complex rod structure of the mineral fiber plate in a separate process step. U.S. Pat. No. 2,546,230 is a known technique for the production of mineral fiber boards or slabs made of rod-shaped elements. The technique described in U.S. Patent No. 2,546,230 is very similar to the techniques disclosed in the aforementioned international patent application and the said Swedish patent and includes a separate step for connecting the rod lamellas to one another by means of a suitable coupling agent. U.S. Pat. No. 3,493,452 discloses a method of producing a fibrous sheet structure comprising filaments or fibers of a polymeric material such as polyethylene terephthalate or polyhexamethylatimethamides. The method involves the manufacture of filaments or fibers of polymeric material by means of of a card-machine from the nozzle of filaments or filaments, the incoming material being composed of porous elastic wadding, collecting the polypropylene filaments or fibers on a conveyor belt the late strip of filaments or fibers of polymeric material, sealing the strip, cutting the seam of a series of stripes comprising filaments or fibers of polymeric material, inverting the strips 90 ° about the longitudinal axis, and joining the strips with one another; · · ······················································································· only by exerting a pressing effect, which is applied to the stripes during the process of their conversion. The tape produced according to the technique described in the patent cited above is suitable for the manufacture of articles such as carpets, blankets, bedding, towels, etc. The purpose of the present invention is to propose a new method of manufacture of a mineral fiber-insulating strip from which insulating slabs can be cut, this method making it possible for an on-line production line to produce insulating mineral fiber slabs having a composite structure providing certain advantages over products Danes according to the prior art plates containing synthetic fibers. A particular advantage of the present invention relates to the fact that the proposed mineral fiber insulation board according to the present invention and produced by the method of the present invention, which, compared to the prior art technical mineral insulating plate, small mineral fibers and, therefore, is less expensive to the mineral fiber-insulating plates corresponding to the state of the art, yet it nevertheless shows in comparison with the so-called mineral fiber insulation plates known in the art,

• Low strength and thermal insulation performance. One particular feature of the present invention relates to the fact that the new mineral fiber-insulating plate of the present invention and manufactured in accordance with the method of the present invention can be made of less mineral fiber or less material as compared to the previously known insulation boards of mineral wool, retaining the same properties as the mineral fiber-insulating sheets produced according to the prior art in terms of mechanical strength and t its insulation performance, providing a lightweight and more compact mineral fiber-insulating plate than previously known mineral fiber-insulating plates, thus reducing the cost of transport, storage and handling. The above object, the above-mentioned advantages and the above-mentioned features with a number of other objects, advantages and qualities which will become apparent from the following detailed description of the presently preferred embodiments of the present invention are more readily achieved by a process according to the present invention comprising the following process steps: a) producing a first nonwoven mineral fiber web defining a first longitudinal direction parallel to the mineral fiber web and a second transverse direction parallel to the first strip of min fibers, such as the first flax; · · ·························································································· (B) moving the first mineral fiber web in the first longitudinal direction of the first strip of mineral fiber in the second transverse direction, and comprising a first curing binder; (c) folding the first mineral fiber web parallel to the first longitudinal direction and perpendicular to the second transverse direction so as to obtain a second non-woven linen but a mineral fiber web, the second mineral fiber web comprising a central body and opposed surface layers enclosing the central body in a sandwich structure, the central body comprising mineral fibers extending substantially perpendicular to the first outer direction, and of the second transverse direction and the surface layers comprise mineral fibers arranged mainly in the second transverse direction; d) moving the second mineral fiber web in the first longitudinal direction; e) producing a third non-woven mineral fiber web defining a third direction parallel to the third mineral fiber web, the third mineral fiber web comprising mineral fibers arranged mainly in the third direction and comprising a second, curing binding agent, the third mineral fiber web is 00028 · ············································································································ · · · · · · · · · · - is a mineral fiber web with a higher compactness than the second mineral strip fibers; f) approaching the third mineral fiber web to the second mineral fiber web to face contact with the same to produce a fourth composite mineral fiber web; and g) curing the first and second curable binders so that the mineral fibers in the fourth the mineral fiber constituents are bonded to each other, thus forming the mineral fiber-insulating web. The third nonwoven web of mineral fiber which is embossed to the second mineral fiber web in step e) may be any separate mineral fiber web. Accordingly, the first and third mineral fiber lanes may be produced on separate production lines to be joined in step e). According to another embodiment of the method according to the present invention, the third non-woven mineral fiber web is produced by separating a surface segment layer from the first mineral fiber web and by compacting the surface segmented layer to produce the third mineral fiber web . The third mineral fiber web may be further produced by sealing the surface segment layer comprising a step to fold the surface segmental layer so as to obtain the third mineral fiber web so as to contain mineral fibers, of mainly oriented in a direction transverse to the longitudinal direction of the third mineral fiber web. According to yet another preferred embodiment of the method according to the present invention, the third non-woven mineral fiber web is produced by separating one of the surface layers of the second strip of abrasive fibers produced in step c) of the same band and by sealing the surface layer to produce the third mineral fiber web. Since the third mineral fiber web is produced by removing a surface layer from the second mineral fiber web, the mineral fibers in the third strip retain the overall orientation of the mineral fibers from the second mineral fiber web, i. E. orientation mainly in the second transverse direction. The method according to the present invention furthermore comprises a further step similar to step e) for the production of a fifth non-woven mineral fiber web similar to the third; a mineral fiber web, and the steps of step (e) of the fifth mineral fiber web to a face contact with the second mineral fiber web so that the second mineral fiber web is embedded in a " sandwich "between the third and fifth mineral fiber webs in a fourth mineral trench belt. By producing a fifth non-woven mineral fiber web, a complete composite fiber structure is produced in the fourth mineral fiber web in which the central body structure coming from the second mineral fiber web interposed between two opposite compacted surface layers, the layer obtained from the third and fifth mineral fiber webs. The folding step of the first mineral fiber web is preferably performed so as to produce a continuous wave along the first over-direction of the first mineral fiber web in order to obtain an accurately structured, folded second mineral fiber web fibers from which the surface layers are easily removed. Given that the third mineral fiber web obtained as separated outer layers of the second mineral fiber web, the mineral fibers in the third mineral fiber web will be oriented, as described above, along the second transverse direction. Therefore, the third direction may coincide with the second transverse direction and be perpendicular to the first longitudinal direction. Since the third non-woven mineral fiber web is produced on a separate production line, the third direction may be of any arbitrary orientation, for example, identical to the first longitudinal direction and, accordingly, perpendicular to the second transverse direction. . .:: i. . The process according to the present invention involves, in addition, the step of introducing a first mineral fiber web from a single base nonwoven mineral fiber web by arranging the base layer of mineral fibers to overlap with one another layers so as to obtain a more homogeneous and compacts of mineral fiber compared to the base mineral fiber web containing additionally mineral fibers oriented mainly along the longitudinal direction n and the base mineral fiber web. By producing the first mineral fiber web, the uncoated, non-woven mineral fiber web by substituting the mineral fiber web of the impregnating layers, the overall orientation of the mineral fibers in the base, non-woven web of mineral fiber is turned from the longitudinal direction of the mineral fiber web in the transverse direction of the first non-woven mineral fiber web. The base, non-woven mineral fiber web is preferably arranged in a overlap ratio in the second transverse direction. In accordance with the technique described in > International Patent Application No. PCT / DK 91/00383, Publication No. WO92 / 10602, the first and second non-woven mineral fiber webs are subjected to a preferred compaction and compression in order to obtain more compact, homogeneous mineral fiber webs. Compaction and pre-

Suturing may include high-pressure compression, longitudinal compression, transverse compression, and combinations thereof. Accordingly, the method according to the present invention further includes a further step-step technological step for moving the first non-woven mineral fiber web produced in step a) produced by the basic non-woven mineral fiber web as recommended described above. It is also preferred that the method according to the present invention comprise an additional step for longitudinally pressing the first nonwoven mineral fiber web produced in step a), and - additionally or alternatively - an additional step for longitudinally compressing the second nonwoven web of mineral fiber web, produced in step c). In the longitudinal compression process, the mineral fiber web undergoing longitudinal compression becomes more homogeneous, resulting in a general improvement of the mechanical characteristic and, in most cases, the thermal insulating ability of the longitudinally compacted mineral- in comparison with the mineral fiber web, which has been longitudinally sealed. As will be apparent from the following: a detailed description of the currently preferred embodiments of the present invention, the mineral fiber-insulating sheets produced according to the method of the present invention, shown in FIGS. 13 have surprisingly improved mechanical properties and mechanical properties, provided that the second non-woven web of mineral fiber produced in step c) has been subjected to overpressure, resulting in the homogenization of the mineral fiber structure in the second weaning of the mineral fiber web. The transversal compression of the second non-woven mineral fiber web leads to a significantly improved mechanical and mechanical properties. characteristic of the finished mineral fiber-insulating plates produced by the non-woven mineral fiber web, which improvement is most likely due to the mechanical rearrangement of the mineral fibers in the second non-woven mineral fiber web since the second non-woven strip of the mineral fiber is subjected to a transversal compression, as a result of which the mineral fibers in the second non-woven mineral fiber web are distributed in a number of non-cured mineral fiber webs. The method according to the present invention may also include, preferably and advantageously, a step for applying some of the foil to one side surface or the side surfaces of the first non-woven web of mineral fiber and / or laying a foil one side surface or to both side surfaces of the second nonwoven web of mineral fiber. The foil may be some kind of plastic material, for example a continuous foil, some woven or non-woven mesh, or, alternatively, a foil of non-plastic material, such as paper or cloth. The mineral fiber strip produced in accordance with the method of the present invention can be executed, as discussed above, with two opposite opposing mineral fiber webs, covering in a sandwich construction one central body of the composite mineral fiber-insulating web. Provided that the insulating web is produced as a three-ply structure, one or both outer surfaces may be provided with similar or identical surface coatings. The method according to the present invention may also include an additional step for sealing the fourth mineral fiber composite strip prior to introducing the fourth composite mineral fiber web into the curing oven. Compression of the fourth composite strip of mineral fibers may involve pressing in height, longitudinally pressing and / or cross-pressing. When compressing the four-component composite mineral fiber web, it is believed that the homogeneity of the final article is improved as the transfer of the fourth composite mineral fiber web has a homogenizing effect on the central body of the fourth composite mineral fiber web , which central body consists of the central body of the second nonwoven web of mineral fibers. In order to obtain a homogeneous and more compact flax •

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The method according to the present invention preferably includes a further step for controlling the fourth composite mineral fiber web prior to the introduction of the fourth composite strip of minerals fibers in the curing oven. By compacting the fourth composite mineral fiber web the homogeneity of the end product is improved because the compaction of the fourth composite mineral fiber web exerts a homogenizing effect on the central body of the fourth strip composition which central body consists of the central body of the second nonwoven mineral fiber web. Step (g) for curing the first curing binder and, optionally, the second and third curing binders, depending on the nature of the binder-binding agent or agents, can be accomplished in a variety of ways for example, by simply exposing the curing agent or agents to a curing gas or a curing medium, e.g., the atmosphere, the curing of the curable binder or agents, e.g., ultraviolet rays or infrared beams . As the curable binder or agents are heat-curable, such as conventional resin-based bonding agents commonly used in the mineral fiber industry, the curing process of the binder or agents includes the step of introducing the mineral fiber web in a heating furnace. Следва - • · · · ···································································································· the curing process is carried out with the aid of a cure melting. Alternative curing devices can include infrared, microwave radiators and cavities. From the cured mineral fiber-insulating web, the preferred segmental plates are cut by cutting the cured nonwoven third or fifth composite strip of mineral fiber into segment plates in a single manufacturing step. The above object, the above-mentioned advantages and the above qualities together with a number of other objects, advantages and qualities can be achieved by means of an installation for the production of a mineral fiber-insulating web comprising: a) a first non-woven fabric of mineral fibers defining a first longitudinal parallel mineral fiber web, a second transverse direction parallel to the first strip of abrasive fibers, the first mineral fiber web being manufactured so as to contain and mineral fibers, mainly arranged in the second transverse direction, to include a first, curable binder; b) a second means for moving the first strip of abrasive fibers in the first longitudinal direction of the first mineral fiber web; c) a third means for folding the first mineral fiber web parallel to the first longitudinal direction and perpendicular to the second transverse direction so as to produce a second non-woven mineral fiber web, the second strip of the mineral fiber comprises a central body and opposed surface layers which are closed in a three-layered central structure, the central body comprising mineral fibers arranged substantially perpendicular to the first longitudinal direction and the second transverse direction and the surface layers containing mineral fibers arranged in the second transverse direction} d) fourth means for moving the second mineral fiber web in the first longitudinal direction; e) a fifth means for producing a third non-woven mineral fiber web defining a third direction parallel to the third mineral fiber web, the third mineral fiber web being manufactured so as to contain mineral wraps arranged primarily in the third direction, and includes a second, cure-bonding agent, the third mineral fiber web being a mineral fiber web with a higher compaction compared to the second mineral fiber web; f) a sixth means for approaching the third mineral fiber web to the second mineral fiber web in contact with the same for producing a fourth mineral fiber web composition; and g) a seventh curing agent for the first and second hardening fibers binding agents so that the mineral fibers in the fourth composite mineral fiber web are bonded together to form the insulating web;

• Mineral fibers. The plant according to the present invention may preferably include any of the above mentioned specific features of the method of the present invention. The above object, the above mentioned advantages and the above qualities, together with a number of other objects, advantages and qualities, are furthermore provided by means of a mineral fiber-insulating plate according to the present invention, wherein the mineral fiber-insulating plate determines the longitudinal direction and includes: a central body , a mineral fiber-containing surface layer, the central body and the surface layer being joined in contact with one another, the mineral fibers of the central body are arranged mainly in the pencil in the longitudinal direction and perpendicular to the top layer, the mineral fibers in the surface layer are arranged in a direction parallel to the longitudinal direction, the surface layer is of a higher compactness than the central body, and the fibers in the central body and the mineral fibers in the surface layer are bonded together in a single structure only by the cured binding agent cured in a single hardening and scraping process. the initially reconstituted non-woven mineral fiber webs from which the central body and the surface layer were produced. The mineral fiber-insulating plate according to the present invention preferably includes opposite surface layers of a similar structure sandwiching the central body in the overall structure of the mineral fiber-insulating plate. The present invention will now be described in more detail with reference to the following figures, in which: Fig. 1 is a schematic and perspective view illustrating the first manufacturing step of producing a mineral fiber web of a mineral fiber-forming melt. Fig. 2 is a schematic and perspective illustration illustrating the manufacturing step for sealing the mineral fiber-insulating web. Figures 3, 4, 5 and 6 are schematic and perspective views illustrating four alternative techniques for folding the mineral fiber-insulating web parallel to the longitudinal direction of the mineral fiber-insulating web. Fig. 7 is a schematic and perspective view illustrating the manufacturing step of separating a top layer of the folded mineral fiber-insulating web made in accordance with the techniques shown in Figures 3-6 and a manufacturing step for sealing the surface layer. Fig. 8 is a schematic and perspective view illustrating the manufacturing step of cross-over the mineral fiber-insulating web produced in the manufacturing step shown in Fig. 7. Fig. 9 is a schematic and perspective view illustrating the manufacturing step for joining a surface layer, preferably a sealed, top layer, to a mineral fiber-insulating web or, preferably, to a residual portion of a mineral fiber-insulating web produced in accordance with with the techniques shown in Figures 3-6, and from which a split surface is formed according to the technique described in Fig. 7. Fig. 10 is a schematic and perspective illustration illustrating a step for curing a mineral fiber-insulating web and a manufacturing step for cutting the cured mineral fiber-insulating web of segmental plates. Fig. 11 is a schematic view, in cross-section and perspective, illustrating the folded mineral fiber-insulating web produced according to the techniques shown in Fig. 3-6. • · · ·

i / 00028-21 Fig. 12 is a schematic and perspective view illustrating a first embodiment of a mineral fiber segment produced according to the techniques shown in Figures 1-10. Fig. Figure 13 is a schematic and perspective view illustrating a second embodiment of a mineral fiber segment produced according to the techniques shown in Fig. 1-10. Fig. 14 and Fig. 15 show diagrams illustrating the production parameters of a production line on the production of mostly insulation boards for the construction of the mineral fiber-insulating web produced in accordance with the techniques of the present invention; and Fig. 16 and Fig. 17 show diagrams similar to the diagrams of Fig. 14 and respectively. Fig. 15 illustrating the production parameters of an on-line production line producing mineral fiber-insulating thermal insulation boards from the mineral fiber-insulating web produced in accordance with the present invention. In Fig. The first step for producing a mineral fiber insulating tape is shown. The first step involves the formation of the mineral fibers from the mineral fiber molding obtained in the furnace 30 which is fed from the furnace trough 32 to a total of four quick rotating rotary pulleys 34 to which the mineral fiber melt is fed more rapidly than a mineral fiber-forming melt 36. Afterwards, the mineral fiber-forming melt flow 36 is fed to the rotating draw-off wheels 24 in a radial direction towards them, at the same time a flow is supplied from cooling gas to fast rotating rotary pulleys 34 in an axial direction to them, causing the formation of individual mineral fibers which are thrown or sprayed by the rapidly rotating rotary pulleys 34 as shown in Figures 38. The spraying of mineral the fibers 38 are collected on a continuously moving first conveyor belt 42 to form the primary mineral fiber-insulating web 40. A heat-curable binding agent is also added to the primary mineral fiber-insulating web 40, and directly to the primary mineral fiber-insulating web 40, or to the stage of mineral fiber ejection from the rotary retracting wheels 34, i. e. at the stage of formation of the individual mineral fibers. The first conveyor belt 42 is, as shown in Fig. 1, a conveyor belt consisting of two sections. The first section of conveyor belts is inclined with respect to the horizontal direction while the second section of conveyor belts is invariably horizontal

/ 00028 - 23 - conveyor belts. The first section is a collector section and the second transport section by means of the first mineral fiber-insulating web 40 is transferred to a second and a third continuously acting transport bands, designated respectively as positions 44 and 46, the conveyor belts operate synchronously with the first transfer belt 42, closing in the sandwich type the primary mineral fiber-insulating web 40 between two adjacent top surfaces of the second and third conveyor belts 44 and 46 respectively. The second and third transport l and 44a respectively connected to a fourth conveyor belt 48 which is a collection conveyor belt on which a secondary mineral fiber-insulating web 50 is comprised as the second and third transport strips 44 and 46 are transported over the top a surface of the fourth belt conveyor 48. Figure 2 shows a manufacturing station for sealing and homogenizing the incoming mineral fiber-insulating web 50 ', which station serves for sealing and homogenization of the incoming insulating web of passage ray fibers 50 ' for producing the mineral fiber-insulating web 50 ', which is more compact and more homogeneous than the mineral fiber-insulating web 50 '. The incoming mineral fiber-insulating web 50 'may consist of the secondary insulating strip (00028-24-50) produced in the station shown in Fig. 1. The pressing station has two sections. The first section includes two conveyer belts 52 '' and 54 '' which are disposed at the upper side surface and, respectively, the lower side surface of the mineral fiber web 50 '. The first section is generally a section in which the mineral fiber web 50 'entering the inlet of the section is pressed at a height which causes the overall height of the mineral fiber web to be reduced and the mineral fiber web is compacted. Transporter 52 '' 'and 54' 'are respectively positioned so as to be inclined at the entrance end at the left side of Fig. 2, with the entrance end of the mineral fiber web 50 'entering the first section, to the exit end, from which the high-pressure mineral fiber web is fed to the second section of the pressing station. The second section of the compression station includes the three rolls 56 'and 58'; 56 '' and 58 ''; 56 '' and 58 ''. The rollers 56 ', 56' 'and 56' 'are disposed at the upper side surface of the mineral fiber web while rollers 58', 58 '' and 58 '' are disposed on the lower side surface of the mineral fiber web. The second section of the pressing station performs a longitudinal compression of the strip of mineral fibers, which longitudinal compression causes homogenization of the mineral fiber web as the mineral fibers in the mineral fiber web are rearranged to the original structure in a more homogeneous structure. The rollers 56 ' and 58 ' of the rollers 56 ' and 58 '; 56 '' and 58 '', and 56 '' 'and 58' '' of the second section are rotated at the same rotational speed, however, which is lower than the rotation speed of transport bands 52 '' and 54 '' of the first section, causing longitudinal pressing of the mineral fiber web. The pressed height and longitudinal mineral fiber web appears as an exit from the press station shown in Fig. For, de-labeled in figures as position 50 ''. It should be borne in mind that the combined high pressure and longitudinal compression station shown in Fig. 2 s may be modified by removing one of these two sections, i. E. the first section including the height compression section or, as an alternative, the second section including the longitudinal compression lecture. By removing one of these two sections of the conveyor station shown in Fig. 2, there is obtained a pressing unit performing a single sealing or pressing operation, such as one high pressure pressing station or, alternatively, one longitudinal compression station. Although the height compression section has been described with transversal bands, and the longitudinal compression section has described sinkers, both sections can be made with rollers or conveyor belts. Therefore, the height compression section can be rolled and the longitudinal compression section is provided with conveyor belts. · On Fig. 3, 4, 5 and 6, four alternative techniques are used for folding a mineral fiber-insulating strip in the longitudinal direction of the mineral fiber-insulating web. In Fig. 3, 4, 5 and 6 the mineral fiber web 50 " ' may be the mineral fiber-insulating web 50 ' ' shown in Fig. 2, or, alternatively, the mineral fiber-insulating web 50 produced at the station shown in Fig. 1. In Fig. The mineral fiber-insulating web 50 ' is brought into contact with a pressing roller 51 by means of which any continuous film 99 of thermoplastic material is applied to the upper side surface of the mineral fiber-insulating web 50 ". The continuous film of thermoplastic material is fed from the roll 98. After the foil 99 has been applied to the upper side surface of the mineral fiber-insulating web 50 ", the mineral fiber-insulating web 50 ", and the continuous foil 67 laid on it is allowed to pass a pre-flared flap 60 ', which flap includes two guiding plates 64 ' and 66 ' located opposite each other and two circumferentially spaced stops, one of which is marked as a position 62 '. It is logical for the film 99 to have such elasticity as to allow the foil 99 and the insulating web 50 '' to be folded. The boundaries of the corrugated flap 60 'and the corrugations of the corrugated flaps of the flap 64' and 66 'are tapered from the entrance < RTI ID = 0.0 >; < / RTI & End of the corrugated flap 60 'to the exit end thereof. After the mineral fiber-insulating web 50' 'of the embossment 99 applied thereon is passed through the flap 60', the insulating web of the < RTI ID = mineral fiber web folded in its longitudinal direction to produce a corrugated and longitudinally folded mineral fiber-insulating web 50 " ". In Fig. 4, an alternative technique for producing corrugated and longitudinally folded insulating tape 50 '' 'of mineral fiber-insulated mineral fiber-insulating web 50' 'is shown. The technique shown in Fig. 4 differs from the technique described above with reference to Fig. 3, so that the valve 60 '' is used, which valve 60 '' differs from the corrugated valve 60 '' shown in Fig. 3, since it has mutually spaced smooth restraints, one of which is designated 64 '', and curved limiters, one of which is designated 62 ''. In Fig. 5 shows another alternative technique for producing the longitudinally folded mineral fiber-insulating web 50 " ' of the smooth insulating web 50 ". The embossed and longitudinally folded mineral fiber-insulating web 50 " 'is produced according to the technique of Fig. 5, by means of a roller assembly 60 '' 'including the smooth stops 62' '', having the same purpose as the smooth stops 62 'and the curved limbs 62' 'shown in Fig. 3 and, respectively, of / 00028 - 28 - Fig. 4, namely to guide the outer edges of the smooth mineral fiber-insulating web 50 " " to obtain the corrugated and longitudinally folded configuration of the mineral fiber-insulating web 50 " ". The roller group 60 '' 'further comprises a total of eight sets of rollers, each of which has two rolls located on the opposite sides of the mineral fiber-insulating web. In Fig. 5 of the rollers are marked position 68. The plurality of rollers define a single-ended configuration, tapered from the inlet end of the roller assembly 60 '' 'to the outlet end of which the outflowed edge is provided with the corrugated and longitudinally- fibers 50 "'. The inclined configuration is intended to assist in corrugating and longitudinally folding the mineral fiber-insulating web 50 " and converting it into the configuration of the folded mineral fiber-insulating web 50 " ' shown in FIG. 5. In Fig. 6 illustrates another alternative technique for producing a longitudinally folded insulating tape from a web. 50 " According to the technique shown in Fig. 6, a station 60 '' '' is inserted, which station comprises a compression station for pressing in height and longitudinal compression, and a transverse folding station. The station 60 '' comprises six sets of rollers, three sets of which consist of rollers 56 ', 58'; 56 '', 58 ''; 56 " ', 58 " ' ', discussed above in connection with Fig. 2. The station 60 '' '' shown in Fig. 6 further comprises three sets of rollers, the first of which consists of two rollers 152 'and 154', the second consists of the two rollers 152 '' and 154 '' and the third consists of the two rollers 152 '' ' The rollers 152 ', 152' 'and 152' '' are disposed on the upper side of the mineral fiber-insulating web 50 '', similar to rollers 56 ', 56' 'and 56' ''. The three rollers 154 ', 154' 'and 154' '' are located at the lower side surface of the mineral fiber-insulating web 50 '', similar to rollers 59, 58 '' and 58 '' '. The three sets of rollers 152 ', 154'; 152 ", 154 ", 152 " ", 154 " " have the same purpose with the conveyor belt assembly 52 ", 54 " discussed above in connection with Fig. 2, i.e., the task of compressing the insulating web of the mineral fiber web 50 ", entering the station 60 " The three sets of roller presses 152 ', 154'; 152 ", 154 ", and 152 " ", 154 " ' ' ' ', are similar to the above-described transport conveyor belts 52 ", 54 ", operating at a rotational speed equal to the speed of the mineral fiber- , arriving at the entrance to the pressing compartment at a height, which is placed in a station 60 '' ''. The three sets of rollers forming the longitudinal compression section, i. rollers 56 ', 58'; · · · · · · · · · · · ·

Of which move at a reduced rotational speed, determining the degree of longitudinal compression. For the longitudinal folding of the mineral fiber-insulating web 50 ", entering the inlet station 60 " ' ', shown in Fig. 6, four crankshaft levers marked with positions 160 ', 160' ', 160' '' and 160 '' 'are provided. The crankshaft groups are of the same design, and in the description given below, the crank arms 160 " are also described, since the other groups of crank levers 160 ', 160 ", 160 " identical to 160 ", and containing elements identical to the members of the group of rods 160 ", but are labeled with one and the same position of the position n with the addition of the sign " ', and the Knee Compound 160 '' includes an electric motor 162 '' which drives the gear 164 '' from which the output 166 '' is output. A total of six gears 168 '' of the same configuration are mounted on the output shaft 166 ''. Each of the toothed wheels 168 " ' engages a corresponding toothed wheel 170 ' '. Each of the gears 17 0 " is a leading tooth wheel of a crank lever system comprising a free-rotation sprocket 172 " and one crank lever " The knee levers 174 ' ' are positioned so that they can be lifted from a lower position in an upper position between two adjacent rollers from the right bottom side of the insulator. The first mineral fiber web 50 ", entering the inlet station < RTI ID = 0.0 > < / RTI > 60 '' ", and are adjusted so as to interact the tilting levers of the system with cranks levers 160 ' disposed on the right upper side of the mineral fiber-insulating web 50 ' ' entering the inlet of the station January 60 '' ''. Similarly, the knee posts of the scroll bars 160 " ' ' and 160 " ' located in the left top and bottom respectively of the mineral fiber-insulating web entering the inlet of the station 60 " 'have been redrafted so as to interact with each other in the manner described below. As can be seen from Fig. 6, a first set of crankshafts 174 ', 174' ', 174' '' and 174 '' 'of the crankshaft systems 160', 160 '', 160 '' ', 160' '' the second set of rollers 152 ', 154' and 152 '', 154 '' similarly a second set of crank arms is disposed between the second and third roller sets 152 '', 154 '' and 152 '', 154 '' '. The knee levers of each of the six complete knee levers are of equal width. In each of the knee lever systems 160 ', 160' ', 160' 'and 160' '' ', the first knee lever is the widest, with the knee width in each of the knee lever systems being reduced starts from the first crank lever and moves to the sixth crank arm located behind the sixth set of rollers 56 '' ', 58' '. · · · · · · · · · / 0002 ^ - 32 · - Using the crankshaft gearmotors160 ', 160' ', 160' '', 160 '' '' , the crankshafts of a given set rotate synchronously with the other three crank levers of said set of crank levers. The crankshafts of all six sets of crank levers work synchronously and are synchronized with the speed of the mineral fiber-insulating web 50 '' fed to the inlet of the station 60 '' ''. The widest or the first set of cranksets is intended to start the transverse compression of the mineral fiber-insulating web 50 ", such as the crank arms 174 " and 174 " " of the crank arms 160 " respectively 160 " ' ' ' ' ' ' ' ' ' ' ' are raised from their position below the lower side surface of the mineral fiber-insulating web 50 ' 'and are brought into contact with the lower side surface of the mineral fiber- , and the crank levers 174 ' and 17 ' ' of the systems with respectively, at the same time are cranked arms 160 'and 160' '' removed from their positions above the upper side mineral fiber-insulating web 50 '' and are brought into contact with the upper side surface of the mineral fiber-insulating web 50 ''. The further rotation of the output shafts 166 ', 166' ', 166' '' and 166 '' '' causes the knee levers to move from the first set of cranks to the center of the mineral fiber-insulating web 50 '',

Transverse compression in a central region of the insulating web 50 ". As soon as the crankshafts of the first crankshaft assembly reach a middle position, the crank levers of the 160 'and 160' '' systems are lifted until the knee levers of the 160 '' and 160 '' ' downwardly and consequently abut the upper and corresponding p, the lower side surface of the mineral fiber-insulating web 50 ". After the mineral fiber-insulating web 50 ' ' is further advanced through a station 60 ' ' ' ', the next or a second set of cranks levers further transversely extrude the areas of the insulating web of the polypropylene fibers regions are located opposite to the above-mentioned central region on which the third, fourth, fifth and sixth crankshaft assemblies exert an additional transversal compression of the mineral fiber-insulating web, realizing a common, homogeneous transverse - sealing the mineral fiber insulating tape of the. The width of the crank levers in each crank lever compartment, the transmission ratio of the transmissions 164 ', 164' ', 164' '' and 164 '' ', the transmission ratio of the sprockets 168 and 170 and the speed of the insulating motif of the mineral the fibers 50 " entering the inlet of the station 60 " " are coordinated with each other, and furthermore with the rotational speed of the high pressure compression sections and for the overlapping of the station to produce a sealed, longitudinal and transverse mineral fiber-insulating web 50 " ". The combination of the height compression section, the longitudinal compression section and the cross-section section in a single station as described above in connection with Fig. 6 is by no means required for the operation of the cranked lever systems described above with reference to Fig. Therefore, the height compression section, the longitudinal compression section and the transverse compression section may be separate but the priming of these three functions leads to a reduction in the overall dimensions of the production plant. Furthermore, it should be borne in mind that the folding of the mineral fiber web, as described above with reference to Fig. 4, 5 and 6, also causes cross-bending and compression of the strip, furthermore providing homogenization of the strip as compared to the uncoated tape entering the inlet. In Fig. 11 is a vertical sectional view of the corrugated and folded mineral fiber-insulating web 50 " ". The corrugated and longitudinally folded mineral fiber web 50 " comprises a core or central body 28 and two opposite surface layers 24 and 26 which surface layers 24 and 26 are separated from the core or central portion 28 of the corrugated and longitudinally folded insulating web 35 50 '' 'along the lines of thought 20 and 22. Surface layers 24 and 26 of the corrugated and longitudinally folded mineral fiber web 50 " ' are composed of segments of the folded mineral fiber-insulating web which segments contain mineral fibers oriented transversely to the longitudinal direction of the corrugated and bonded 50 '' of the mineral fiber-insulating web 50. The corrugated and longitudinally folded mineral fiber-insulating web 50 '' 'is produced by the secondary mineral fiber-insulating web 50 by folding the secondary insulating layer mineral fiber web 50, optionally, after sealing of the secondary mineral fiber-insulating web 50, as will be explained below with reference to Fig. 8, the overall orientation of the mineral fibers in the secondary mineral fiber-insulating web 50 is maintained in the segments of the refractory and longitudinally folded mineral fiber-insulating web 50 '' 'which segments together form the surface layers 24 and 26. The central core or body 28 of the corrugated and superficially folded mineral fiber-insulating web 50 " ' consists of segments of the folded insulating web of mineral fibers 50 " ', which segments are folded perpendicularly to the surface segments 24 and 26 of the mineral fiber-insulating web 50 " ". The mineral trains in the core or central body 28 of the corrugated and over the 00028-36 lined 50 '' 'mineral fiber-insulating web are oriented substantially perpendicular to the longitudinal direction as well as to the transverse direction of the corrugated and longitudinally folded insulating mineral fiber web 50 '' '. The corrugated and longitudinally folded insulating web 50 '' ', shown in Fig. 9 and manufactured in accordance with the techniques discussed above in connection with Fig. 3, 4, 5 and 6 is further processed in the station shown in Fig. 7, in which the surface layer 24 is disengaged from the central body 28 of the corrugated and longitudinally folded mineral fiber-insulating web 50 " ' ' 9. The separation of the surface layer 24 from the remaining part of the mineral fiber-insulating web is effected by some cutting tool 72 while the remaining part of the mineral fiber-insulating web is supported and conveyed by means of the conveyor belt 70. The cutting tool 72 may be a stationary cutting tool or a knife, or alternatively a transversely moving reversing cutting tool. The surface layer 24, the loose mineral fiber strip, deviates from the path of movement of the remainder of the mineral fiber-insulating web by means of a conveyor belt 74, transferring from this conveyor belt 74 to three sets of rollers including a first set of rollers 76 'and 78', a second set of rollers 76 '' and a third set of rollers 76 '' and 78 '' ' 37 - the roller assembly together form a compaction or compression section similar to the second section of the respective station , described above with reference to Fig. 2. Na'Fig. 8, a cross-sectional station generally designated 80 is shown. At station 80, the core or the central body 28 or, alternatively, the corrugated and superficially folded mineral fiber-insulating web 50 '' 'produced in one of the stations , described above in connection with Fig. 3, 4, 5 and 6 is brought into contact with two conveyor belts 85 and 86 which define the construction in which the mineral fiber-insulating web is subjected to a transversal pressing and is fed to a total of four processing surfaces 89b, 89c and 89d, which, together with similar rollers not shown in the figure opposite the rollers 89a, 89b, 89c and 89d, are intended to assist in the extrusion of the core or the central body 28. The conveyor belts 85 and 86 are rotatable in the cords 81,83 and respectively 82,84. From the transverse compression station 80, a compressed and compacted core, respectively, is obtained. central body 28 '. Once the core or central body 28 has passed through the transverse compression station 80 and is transformed into the transversally pressed core or central body 28 ', the core or central body is engaged by rollers consisting of an input roller 87 and one output roller 88.

Although the core or central body 28 entering the inlet of the transverse compression station 80 is preferably recommended from the above-described central body separated from the mineral fiber-insulating web 50 ' ', as described in connection with Fig. 7, the insulating web 50 " can alternatively be processed at station 80 shown in Fig. 8. If the core or central body 28 or the mineral fiber-insulating web 50 '' 'which is cross-extruded in station 80 is provided with an upper surface layer, such as the foil 99 described above in connection with Fig. 3, the foil must be of such structure as to be compatible with the transversal pressing of the strip and the foil as a combination. Therefore, the foil laid on the upper side surface of the mineral fiber-insulating web 50 " as shown in Fig. 3, it must be able to be pressed and adjusted to the reduced width of the transversally pressed core or center body 28 'or to the transversally extruded mineral fiber-insulating web coming out at the exit of the prestressing station 80. After the sealing of the separated surface layer 24 is performed as described above in connection with Fig. 7, the compacted surface layer 24 is returned to the rest of the mineral fiber-insulating web or the central body which has been preferably transversely spaced as described above in connection with Fig. 8, joining in face contact with the top surface of the core or the central body 28 as shown in Fig. 9. In Fig. 9 shows a set of rollers comprising a roller 79 'and a roller 79' 'disposed on the top and bottom surface of the surface layer 24, which roller assembly serves to apply a surface film 99' fed by the roller 98 ' on the upper side surface of the sealing surface layer 24. From the rollers 79 'and 79' ', the surface layer 24, which is an integrated mineral fiber-insulating web of higher compactness than the core or central body 28, turns to the side-surface side OCT core or tsentralnototyalo 28 by means of two rollers 77 'and 77' '. The roller 77 ' ' extends beneath the surface layer 24 and constitutes a reversing roller while the roller 77 ' located above the top surface of the surface layer 24 serves to adhere the sealing surface layer 24 in face contact with the upper side surface the core or the central body 28, which is transported by means of a conveyor 70, also shown in Fig. 7. Once the sealed top layer 24 has been brought into face contact with the upper side surface of the core or the central body 28, A multilayer structure of the mineral fiber-insulating web is obtained, which multilayer structure is marked as a whole with position 90. In Fig. 9 is shown with a dashed line another one foil99 " ". This foil is fed by the roll 98 ''. The foil 99 '' may be a continuous foil or, alternatively, a mesh film such as a foil similar to the surface film 99 described above. It is to be understood, however, that the foils 99, 99 'and 99' 'are optional features which can be omitted, provided that an integrated web structure of the mineral fibers is to be produced. Alternatively, one or more of the above-mentioned films or foils may be applied in various embodiments of the mineral fiber-insulating web produced in accordance with the embodiments of the present invention. It should be borne in mind that the sealed surface layer 24 which is disengaged from the mineral fiber-insulating web 50 " ' as shown in Fig. 7 can alternatively be obtained from a separate production line, such as one of the production stations shown in Fig. 3,4, 5 and 6 can be connected directly to the production station shown in Fig. 9, as an option, through the production station 8, thus eliminating the production station as shown in Fig. 7. Preferably, the production station shown in Fig. 7, be adapted to separate two surfaces;

A layer of core or central body 28 for producing two separate surface layers separated from the core or central body 28 to provide two layers of staples separated from opposing side elevations of the core or central body 28, which uppermost layers are processed in accordance with the technique described above with reference to Fig. 7 for the formation of two highly compact surface layers in accordance with the technique described above with reference to Fig. 9 which are coupled to the core or central body 28 on its opposite lateral surfaces, forming a three-layer sandwich structure in which the three-layer construction of the central body 28, which was preferably transversally pressed as described above in connection with Figure 8, is inserted between the two opposing surface layers similar to the surface layer 24 shown in Figure 9. In Figure 10, the multilayer structure of the mineral fiber-insulating web 90 is advanced through a hardening station including or a curing oven having opposed furnace sections 92 and 94 which generate heat to heat the complex construction of the mineral fiber-insulating web 50 to a higher temperature to solidify the yielding furnace of a curing agent of the composite structure of the mineral fiber-insulating web and the mineral core of the core or the central body of the top structure, as well as the mineral fibers of the < RTI ID = 0.0 > sealing surface or surface layers to be interconnected so as to form an integrated bonded insulating web of mineral fibers to be cut into segmented plates by means of the knife 96. Given that the foil99 and - the continuous foils 99 'and 99' 'are laid, the thermoplastic material of the foils 99, 99' and 99 'will also melt to provide additional bonding of the mineral fibers to the mineral fiber-insulating web. 10 shows a separate segment plate 10 ' comprising the core 12 and an upper layer 14. The upper layer 14 is formed by the sealing surface layer 24 while the core 12 is made of the core or the central body 28 of the corrugated and longitudinally folded insulating a mineral fiber web 50 " ' shown in Fig. 9. In Fig. 12 is a perspective view in part of a first embodiment of a mineral fiber-insulating web segment segment according to the present invention as a whole. The segment plate 10 comprises a core 12 and a topsheet 14 and also a single bottom layer 16 made from a surface pad 50 'of mineral fiber-insulating web. A segment of the core 12 of a segment plate 10, which segment 18 is made of the core or central portion 28 of the corrugated and longitudinally folded mineral fiber-insulating web 50 '', which core or center, It should be cross-pressed as described above with reference to Fig. 8. In Fig. 13 is a perspective view partially depicted of a second embodiment of a mineral fiber-insulated mineral fiber plate segment according to the present invention designated as the 10 'position as a whole. Similar to segment flap 10 described above with reference to Fig. 12, segment 10 ' comprises the core 12, the topsheet 14 and a downstream layer 16. Moreover, an upper overlay layer 15 is also shown which comprises the foil 99 ' described above with reference to Fig. 9. The top coat layer 15 may consist of a strip of plastic material, a woven or non-woven plastic film or, alternatively, a coating of a non-slip material such as paper serving only for the purpose of the layout and the appearance. The upper top layer 15 may alternatively be applied to the mineral fiber-insulating web after curing of the heat-curable binder, i. E. after applying the mineral fiber-insulating web 90, the temperature generated by the furnace sections 92 and 94 shown in Fig. 10 · · · · · · * ♦ ··· · · · ·································· Example 1 A heat-insulating plate with a similarly flattened structure shown in Fig. 1. 12 made of a mineral fiber-insulating web and produced in accordance with the method of the present invention described above in connection with Fig. 1-10 is manufactured according to the following specifications: The method includes steps similar to the steps described above in connection with Fig. 1, 2, 6, 7, 8, 9 and 10. The production capacity of the plant is 5000 kg / h. A single surface of the primary strip produced in the station described in Fig. 1, is 0.4 kg / m < 2 >, and the width of the primary strip is 3600 mm. The density of the central body 28 is 20 3 kg / m. The longitudinal compression ratio, performed in two station stations similar to the station described in Fig. 2, e1: 1, respectively 1: 2, and the cross-sectional ratio produced in the station shown in Fig. 8 is 1: 2. The finished plate comprises a single surface layer having a unit weight of 1 kg / m2. The ratio of longitudinal compression of the surface layer is 1: 2. The thickness of the surface layer is 10.00 and the thickness of the surface layer is 100 kg / m2. The width of the mineral fiber-insulating web produced in the station shown in Fig. 1, is 1800 g / l. The production parameters used are shown in Table 1. And Tab. B below.

• • • • • / 00028 - 45 -

Table A Total Thickness A B m / min C m / min 0 m / min E m / min F m / min mm m / min x 10 50 11.57 51.44 51.44 51.44 15.72 25.72 75 11.57 40.26 40.26 40.26 20.13 20.13 100 11.57 33.07 33.07 33.07 16.53 16.53 125 11.57 28.06 28.06 28.06 14.03 14.03 150 11.57 24.37 24.37 24.37 12.18 12.18 175 11.57 21.53 21.53 21.53 10.77 10.77 200 11.57 19.29 19.29 19.29 9.65 9.65 225 11.57 17.47 17.47 17.47 8.74 8.74 250 11.57 15.96 15.96 15.96 7.98 7.98 275 11.57 14.70 14.70 14.70 7.35 7.35 A = conveyor belt speed 42 and spinning chamber B = transport speed c = transporting speed (Figure 2) D = transporting speed (Figure 8) E = transporting speed (l> 2) F = transport speed (Figure 5) band 48 band 70 after p the first longitudinal direction 70 after the transverse strip 70 after the second longitudinal direction 70 before the furnace furnace

Table 46 Table B Thickness G mm kg / m2 kg / m 50 0.45 0.45 75 0.58 0.58 100 0.70 0.70 125 0.83 0.83 150 0.95 0.95 175 1.08 1.08 200 1.20 1.20 225 1.33 1.33 250 1.45 1.45 275 1.58 1.58 I kg / m2 J kg / m2 K kg / m2 L kg / m2 0.90 0.40 0.80 1.80 1.15 0.65 1.30 2.30 1.40 0.90 1.80 2.80 1.65, 1.15 2.30 3.30 1.90 1.40 2.80 3.80 2.15 1.65 3.30 4.30 2.40 1.90 3.80 4.80 2; 65 2.15 4.30 5.30 2.90 2.40 4.80 5.80 3.15 2.65 5.30 6.30 G = weight per unit surface area of the mineral fiber-insulating strip on a conveyor belt 42 H = unit surface weight of the mineral fiber-insulating web after the first longitudinal compression) Fig. 2) 1 = weight per unit surface area of the mineral fiber-insulating web after transverse compression (Fig.8) J = weight per unit surface area of the mineral fiber-insulating web prior to the second longitudinal compression (Figure 2) · · · · · · · · · ·································································· = Weight per unit area of the mineral fiber-insulating tape after the second longitudinal compression (Figure 2) L = Unit weight of the mineral fiber-insulating web before the curing oven. In Fig. 14 is a diagram illustrating the relationship between the parameters shown in Table A. The indications of the positions used in Fig. 14 correspond to the parameters given in Table. A. In Fig. 15 is a diagram illustrating the relationship between the parameters given in Table. B. The indications of the positions used in Fig. 15, match the parameters given in Table. B / 00028 - 46 - Table B b: Thickness mm 50 75 100 125 150 175 200 225 250 275 G H kg / m2 kg / m '0.45 0.45 0.58 0.58 0.70 0.70 0.83 0.83 0.95 0.95 1.08 1.08 1.20 1.20 1.33 i.33 1.45 1.45 1.58 1.58 IJ kg / m2 kg / m2 0.90 0.40 1.15 0.65 1.40 0.90 1.65, 1.15 1.90 1.40 2.15 1.65 2.40 1.90 2; 65 2.15 2.90 2.40 3.15 2.65 KL kg / m2 0.80 1.80 1.30 2.30 1.80 2.80 2.30 3.30 2.80 3.80 3.30 4.30 3.80 4.80 4.30 5.30 4.80 5.80 5.30 6.30 G = weight per unit surface area of the mineral fiber-insulating strip on a conveyor belt 42 H = weight per unit surface area of the mineral fiber-insulating strip after the first longitudinal compression) Fig. 2) 1 = weight per unit surface area of the mineral fiber-insulating web after cross-pressing (Fig.8) J = weight of the surface of the mineral fiber-insulating web prior to the second longitudinal compression (Figure 2) K = Weight of unit surface area of the mineral fiber-insulating strip after the second longitudinal compression (K) = K = Figure 2) L = Unit weight of the mineral fiber-insulating web before the curing oven. In Fig. 14 is a diagram illustrating the relationship between the parameters shown in Table A. The indications of the positions used in Fig. 14 correspond to the parameters given in Table. A. In Fig. 15 is a diagram illustrating the relationship between the parameters given in Table. B. The indications of the positions used in Fig. 15, match the parameters given in Table. B. Example 2 Multilayer roof slab with a similarly flat structure shown in Fig. 12 made of a mineral fiber-insulating web and produced in accordance with the method of the present invention described above in connection with Fig. 1-10 is manufactured according to the following specifications: The method includes steps similar to the steps described above in connection with Fig. 1, 2, 6, 7, 8, 9 and 10. The production capacity of the plant is 5000 kg / h. The weight of a single surface of the primary strip produced in the station described in Fig. 1, is 0, & kg / m2, and the width of the primary strip is 3600 mm. The density of the central body 28 is 110 kg / m. The longitudinal compression ratio, performed in two station stations similar to the station described in Fig. 2, e1: 3, respectively 1: 2, and the cross-sectional ratio produced in the station shown in Fig. 8 is 1: 2. The finished plate comprises a single surface layer having a unit weight of 57 kg / m2. The ratio of longitudinal compression of the surface layer is 1: 2. The thickness of the surface layer is 1.000 mm and the surface layer density is glO kg / m 2. The width of the mineral fiber-insulating web produced in the station shown in Fig. 1 is 1800 rpm. The production parameters used are shown in Table. in and Table below. Table C • Total thickness mm A m / min x 10 B m / min C m / min D m / min E m / min F 50 7.72 38.58 12.86 12.86 6.43 6.43 75 11.57 27.92 9.31 9.31 4.65 4.65 100 11.57 21.87 7.29 7.29 3.65 3.65 125 11.57 17.98 5.99 5.99 3.00 3.00 150 11.57 15.26 5.09 5.09 2.54 2.54 175 11.57 13.26 4.42 4.42 2.21 2.21 200 11.57 11.72 3.91 3.91 1.95 1.95 225 11.57 10.50 3.50 3.50 1.75 1.75 250 11.57 9.51 3.17 3.17 1.59 1.59 275 11.57 8.69 2.90 2.90 1.45 1.45, A = conveyor belt speed 42 and spinning chamber B = conveyor belt speed 48 C = conveyor belt speed 70 after the first longitudinal compression (Figure 2) D = transport press speed (Figure 8) strap 70 after transverse E = transport speed (F> 2) strip 70 after the second longitudinal F = transport belt speed 70 before the curing furnace (Figure 5) • b • • • • • • · · · · · · · · T · · / 00028 - 50 - Table ρ Total thickness mm kg kg / m2 kg / m2 50 0.60 1.80 3.60 1.82 3.63 7.20 75 0.83 2.49 4.98 3.19 6.38 9.95 100 1.06 3.18 6.35 4.57 9.13 12.70 125 1.29 3.86 7.73 5.94 11.88 15.45 150 1.52 4.55 9.10 7.32 14.63 18.20 175 1.75 5.24 10.48 8.69 17.38 20.95 200 1.98 5.93 11.85 10.07 20.13 23.70 225 2.20 6.61 13.23 11.44 22.88 26.45 250 2.43 7.30 14.60 12.82 25.63 29.20 275 2.66 7.99 15.98 14.19 28.38 31.95 G = weight per unit area of the mineral fiber-insulating strip on a conveyor belt 42 H = unit weight per arhnost of insulating mineral fiber web after first longitudinal press-in) Fig. 2) 1 = weight per unit surface area of the mineral fiber-insulating web after transverse compression (Fig.8) J = weight per unit surface area of the mineral fiber-insulating web prior to the second longitudinal extrusion (Figure 2)

K = weight per unit surface area of the mineral fiber-insulating strip after the second longitudinal compression (Figure 2) L = Unit weight of the mineral fiber-insulating web before the curing oven. In Fig. 16 is a diagram illustrating the relationship between the parameters shown in Table B. The indications of the positions used in Fig. 16 correspond to the parameters given in Table c. In Fig. 17 is a diagram illustrating the relationship between the parameters given in Table D. The indications of the positions used in Fig. 1 7, correspond to the parameters given in Table. D. EXAMPLE 3 The importance of subjecting the insulating strip of extractive fibers to longitudinal and transverse compression is illustrated by the data in Table 1. E given below. - 52 · · · · · · · · · · · 9 · · · · · · · · · · · · ; / 00028 at a tf se

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The mineral fiber-insulating panels according to the present invention clearly demonstrate increased strength and increased modulus of elasticity compared to the conventional thermal insulator. However, the mechanical characteristics of the mineral fiber-insulating sheets according to the present invention are further improved by subjecting the mineral fiber-insulating web of the strip to which the insulating sheets are produced to longitudinal and transverse compression as it is in connection with Fig. 2 and Fig. 8.

Claims (34)

WO 94/16163 PCT / DK94 / 00028 PATENT CLAIMS A method for manufacturing a mineral fiber-insulating web comprising the following process steps: a) producing a first non-woven mineral fiber web defining a first longitudinal direction parallel to said mineral fiber web and a second transverse direction parallel of said first mineral fiber web, said first mineral fiber web comprising mineral fibers arranged primarily in said second transverse direction and comprising a first curable binder; b) moving said first mineral fiber web in said first longitudinal direction of said first mineral fiber web; c) folding said first mineral fiber web parallel to said first longitudinal direction and perpendicular to said second transverse direction so as to produce a second nonwoven mineral fiber web, said second mineral fiber web comprising one central body and opposing surface layers enclosing in said sandwich structure said central body, said central body comprising mineral fibers arranged in a substantially perpendicular direction to said first longitudinal direction and said second transverse layer, and said surface layers comprise a mineral fiber, mainly arranged in said second transverse juice; d) moving said second mineral fiber web in said first longitudinal direction; e) producing a third non-woven mineral fiber web defining a third direction parallel to said third mineral fiber web, said third mineral fiber web comprising mineral trains arranged primarily in said third direction , and comprising a second curable binder, said mineral fiber web being a mineral fiber web of a higher compactness than said second mineral fiber web; f) approaching said third mineral fiber web to said second mineral fiber web in face contact with the same for producing the fourth composite mineral fiber web; and g) curing said first and second curing binding binders so that said mineral fibers in said fourth composite web of mineral fibers are bonded together, thereby forming said mineral insulating web. A method according to claim 1, wherein said third nonwoven web of mineral fiber is produced by separating a surface segment layer from said first mineral fiber web and compaction of said surface surface a segmented layer for the production of said third mineral fiber web. The method of claim 2 wherein said control of said surface segment layer comprises a step of folding said surface segment layer so as to produce said third mineral fiber web containing mineral fibers arranged primarily in orientation transversely to the longitudinal direction of said third mineral fiber web. The method of claim 1 wherein said third-woven mineral fiber web is produced by separating one of said surface layers of said second mineral fiber web from said center body and by compacting said one surface segmental layer for producing said third mineral fiber web. A method according to any one of claims 1-4, comprising an additional step similar to step e) for producing a fifth non-woven mineral fiber web, similar to the one of 00028 Patent, Claims ••••••••••• Said third mineral fiber web and a step of step approach in step e) of said fifth band of mineral fibers to said second mineral fiber web in face contact therewith such that said second mineral fiber web is incorporated into a construction of the type quot; between said third and fifth strips of mineral fibers in said fourth mineral fiber web. The method of any one of claims 1-5, wherein said folding in step c) comprises folding said first mineral fiber web so as to produce a continuous corrugation extending in said first longitudinal direction of said first mineral fiber web. A method according to any one of claims 1-6, wherein said third direction is perpendicular to said first longitudinal direction. A method according to any one of claims 1-6, wherein said third direction is identical to said first transverse direction. A method according to any one of claims 1-8, comprising the first step of producing said mineral fiber first from a base nonwoven mineral fiber web by arranging said baffle strip from mineral fibers to overlapping layers. 10. The process according to claim 1, characterized in that the non-woven mineral fiber overlap ratio is essentially a transverse direction. 9, said bam-fiber being arranged in said second &lt; RTI ID = 0.0 &gt; A method according to any one of claims 1-10, further comprising an extra step for pressing the height of said first non-woven mineral fiber web produced in step a). of Claims 1-11, comprising for longitudinal pressing of mineral fibers, either alternatively or alternatively, pressing said substrate produced in step A method according to any of the further steps of said first nonwoven laminate in step a), and an additional step for a nonwoven nonwoven web of mineral c); A method according to any one of claims 1-12, further comprising an additional step of transversely compressing the mineral fiber web produced in step c). The method of any one of claims 1-13 comprising the step of extruding said fourth composite mineral fiber web prior to the introduction of said fourth composite mineral fiber web in said hardening furnace. A method according to any one of claims 1-14, comprising a step for applying a foil to one side surface or both side surfaces of said first non-woven mineral fiber web and / or applying foil to one side surface or both sides of said second non-woven mineral fiber web. A method according to any one of claims 1-15, further comprising a step for cutting said cured four-component mineral fiber web of segmental plates. An apparatus for producing a mineral fiber-insulating web comprising: a) a first non-woven fabric manufacturing device, claims / 00028 A mineral fiber web defining a first longitudinal direction parallel to said mineral tread strip and a second transverse direction parallel to said first mineral fiber web, said first mineral fiber web is manufactured so that n contains mineral fibers arranged mainly in said second direction, and - comprises a first curing bonding agent; b) a second means for moving said mineral fiber first into said first longitudinal axis of said first mineral fiber web; c) a third means for folding said first strip of abrasive fibers parallel to said first longitudinal direction and perpendicular to said second transverse jet so that a second nonwoven web of mineral fibers is produced, said second mineral fiber web comprising a central body and opposed surface layers enclosing in said sandwich structure said central body, said central body comprising mineral fibers arranged substantially perpendicular to said first longitudinal direction and said second transverse direction, and said surface layers comprise mineral fibers arranged mainly in said second transverse direction; (d) a means for moving said mineral fiber web in said first upward direction to said fertilizer; e) a fifth means for producing a third mineral fiber non-woven material defining a third direction parallel to said third mineral fiber web, the third mineral fiber web being manufactured so as to contain mineral fibers arranged mainly in said mineral fiber web third direction and includes a second curing binding agent, the third mineral fiber web being a mineral fiber web of higher compactness as compared to said second mineral fiber web; (f) a sixth means for bringing said third mineral fiber web to said second mineral fiber web in face contact with said third mineral fiber composite strip; and (g) a seventh means for curing said first mineral fiber web, and second bindable binders such that said mineral fibers of said fourth composite mineral fiber web are bonded together to form said mineral fiber-insulating web. An installation according to Claim 17, said said fifth means being adapted to produce said third nonwoven mineral fiber web by separating said surface segment layer from said first a mineral fiber web and compaction of said surface segmented layer for the production of said third mineral fiber web. Installation according to Claim 18, said fifth embodiment being adapted to sealing said uppermost segmented layer by folding said surface segmented layer so as to produce said third mineral fiber web containing mineral fibers arranged primarily with an orientation transverse to the longitudinal direction of said third strip of mineral fibers. Installation according to Claim 17, said said means being adapted to produce said non-woven mineral fiber web by separating one of said surface layers from said second mineral fiber web from said central body from said mineral fiber web and sealing said one of said surface layers to produce said third mineral fiber web. 21. An apparatus further comprising any other eighth means of claims similar to 17-20, said fifth means for producing a fifth non-woven linen, A mineral fiber patent similar to said third mineral fiber web and a ninth means for bringing said fifth mineral fiber web to said second mineral fiber web in face contact with the same , so that said second mineral fiber web is embedded in a sandwich construction between memories-of authorized third and fifth mineral fiber webs in memory of th fourth mineral fibers. An installation according to any one of claims 17-20, wherein said third means is adapted to fold said first mineral fiber web so as to produce a continuous corrugation extending in said first longitudinal direction of said first mineral fiber web. Installation according to any one of claims 17-22, wherein said third direction is perpendicular to said first longitudinal direction. Installation according to any one of claims 17-22, wherein said third direction is identical to said first longitudinal direction. 25. An installation according to any one of said first means is a suitably adapted embodiment of 17-24, to produce a &lt; RTI ID = 0.0 &gt; a &lt; / RTI &gt; The present invention relates to a first mineral fiber web of some basic non-woven mineral fiber web by means of a non- subtraction of the base mineral fiber web of the prepressing layers. Installation according to claim 25, wherein the first means is adapted to arrange said mineral fiber-based web of a web in a ratio of overlapping mainly in said second transverse direction. Installation according to any one of claims 17-26, comprising the tenth means for pressing said height of said first nonwoven mineral fiber web produced by said first means. An installation as claimed in any one of claims 17-27, further comprising the eleventh longitudinal stretching means of said first non-woven mineral fiber web produced by said first means, and - additionally or alternatively - twelve longitudinal pressing means of said second non-woven mineral fiber web produced by said third means. Installation according to any one of claims 17-28, Patent, claims - 12/00028 • · • · · · · · · · · also comprising a thirteenth means for transversely transferring said second non-woven mineral fiber web produced by said third means. Installation according to any one of claims 17-29, including also a fourteenth means for pressing said fourth mineral fiber composite strip prior to the introduction of said fourth composite mineral fiber web by means of said seventh means in said furnace for curing. The apparatus of any one of claims 17-30, further comprising the fifteenth means for applying a foil to one side surface or both side surfaces of said first nonwoven strip of abrasive fibers and / or laying foil on one side surface or both side surfaces of said second non-woven mineral fiber web. A plant according to any one of claims 17-31, also comprising the sixteenth means for cutting said cured fourth composite mineral fiber web of segment plates. 33. A mineral fiber-insulating plate defining a longitudinal direction and including The present invention relates to a central body comprising a mineral fiber layer comprising a mineral fiber layer, said central body and said surface layer being joined in face contact with each other, said mineral fibers in said central are arranged substantially perpendicular to said direction and perpendicular to said surface layer, said mineral fibers in said surface layer being arranged mainly in a direction parallel to said longitudinal direction said surface layer being of a higher compactness than said central body and said mineral fibers in said central body and said mineral fibers in said surface layer being interconnected in an integrated structure only by cured binding agents cured in a single hardening process and present initially in the uncured non-woven mineral fiber webs from which said central body and said surface layer are produced. 34. A mineral fiber-insulating plate according to claim 33, comprising opposed surface layers of a similar structure sandwiching in a sandwich- - The said central body in said integrated structure. A mineral fiber-insulating plate according to claims 33-34, said plate being manufactured according to any one of claims 1-16 and / or by means of the installation according to any one of claims 17-32