DK168123B1

DK168123B1 - SOUND-SOILING SURFACE

Info

Publication number: DK168123B1
Application number: DK065187A
Authority: DK
Inventors: Friedrich Feht
Original assignee: Wilhelmi Werke Gmbh & Co Kg
Priority date: 1986-02-11
Filing date: 1987-02-10
Publication date: 1994-02-14
Also published as: EP0233556B1; ATE57222T1; DK65187A; DK65187D0; EP0233556A3; EP0233556A2; DE3604246C1

Abstract

1. Sound-absorbing false ceiling with a support construction (T) of parallel base section members (4) and parallel support section members (5) which are secured to be displaceable on these latter and which intersect the base section members (4), with individual rigid plates or boards (D) which are fixed on the support section members (5) without any spacing, and with a decorative porous coating (31) which is applied beforehand and forms the visible side of the false ceiling, characterised in that the boards (D) themselves are porous and sound-absorbing and consist of wood chips or organic fibres, or of wood chips with proportions of inorganic materials, which are connected to one another by a bonding agent, that the boards (D) are stuck to one another so as to be resistant to tension and pressure by tongue-and-groove connections (1, 3; 23, 24) and that the decorative porous coating (31) is applied directly to the boards (D).

Description

DK 168123 B1DK 168123 B1

Den foreliggende opfindelse angår et lyddæmpende underdæk (underloft) med en bærekonstruktion af parallelle grundprofiler og på disse forskydeligt fastgjorte parallelle bæreprofiler, som krydser grundprofilerne, med enkelte stive plader, der er fastgjort på bæreprofilerne uden mellemrum, og med en på stedet anbragt porøs belægning, der udgør den synlige del af un-5 derdækket, hvorved dannes én kompakt dækflade (loftsplade).BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound attenuating lower deck (lower ceiling) having a carrier structure of parallel basic profiles and to these slidably mounted parallel carrier profiles which intersect the base profiles, with single rigid plates fixed to the carrier profiles at intervals and with an on-site porous coating. forming the visible part of the lower deck, thereby forming one compact cover surface (ceiling plate).

Lyddæmpende underdæk kendes (hovedsageligt benævnt akustiklofter), der er sammensat af enkelte træspånplader. Med henblik på ophængning af de enkelte plader er der forudset bærekonstruktioner, hvori pladerne er indlagt, eller som griber ind i noter på pladekanterne. Sådan-10 ne dæk har altså altid et mønster, der er givet ved formen af de enkelte plader, som hovedsageligt er kvadratiske eller rektangulære, men dog også kan have en anden vilkårlig form, f.eks. en trekantet eller en sekskantet. Ved sådanne dæk er det ved uregelmæsige rum-afgrænsningsvægge (f.eks. skæve vægge eller afrundede vægge) problematisk at tilslutte dækket til væggen. Mønsterdannelsen i dækket, der hidrører fra de enkelte plader, er ikke altid ønsket i 15 arkitektonisk henseende. Akustikspånplader har dog den fordel at være godt lydabsorberende og udvise en høj stabilitet overfor stød- og trykpåvirkninger.Sound-absorbing lower decks are known (mainly referred to as acoustic ceilings), which are composed of individual wood chipboard. For the purpose of hanging the individual plates, supporting structures are provided in which the plates are inserted or which intervene in notes on the plate edges. Thus, such tires always have a pattern which is given by the shape of the individual plates which are mainly square or rectangular, but may also have another arbitrary shape, e.g. a triangular or a hexagonal. In such decks, it is problematic to connect the tire to the wall in case of irregular room delineation walls (eg oblique walls or rounded walls). The pattern formation in the deck, which originates from the individual plates, is not always desired in 15 architectural terms. However, acoustic particleboard has the advantage of being sound-absorbing and having a high stability to shock and pressure effects.

Der kendes også et lyddæmpende underloft af den indledningsvis nævnte art, og som ikke udviser nogen mønsterdannelse (Firmabrochure "Det fugeløse akustikloft" fra firmaet Stotmei-20 ster GmbH fra 10.09.84). Dette kendte underloft består af perforerede gipsplader, som på sædvanlig måde er fastgjort til en bærekonstruktion, således at gipspladerne støder tæt sammen. Det således dannede underloft bliver på sin underside beklædt med et glasfiberlag med henblik på optisk at kunne lukke hullerne i gipspladerne med den i tilslutning dertil anbringelige, dekorative, lydgennemtrængelige belægning. Med henblik på lydabsorption skal underloftet 25 under monteringen af gipspladerne bagbeklædes med et lydabsorberende materiale i form af tykke måtter af glasuld eller andet lyddæmpende materiale. Fremstillingen af disse kendte lyddæmpende underlofter er meget arbejdskrævende. I området ved hullerne i gipskartonpla-derne kan underloftet nemt beskadiges. Sådanne underlofter kan særlig nemt beskadiges ved stødpåvirkninger. I området med forholdsvis store huller i gipskartonpladerne på den synlige 30 side af underloftet aflejres desuden støv, hvilket medfører uønsket lokal misfarvning af den dekorative, porøse belægning.There is also known a sound attenuating lower ceiling of the type mentioned at the beginning and which does not show any pattern formation (Company brochure "The birdless acoustic ceiling" from the company Stotmeister GmbH from 10.09.84). This known lower ceiling consists of perforated gypsum boards, which are usually attached to a supporting structure so that the gypsum boards meet close together. The lower ceiling thus formed is coated on its underside with a fiberglass layer in order to optically close the holes in the plasterboard with the adjacent, decorative, sound-permeable coating. For sound absorption, during the installation of the plasterboard, the lower ceiling 25 must be backed with a sound-absorbing material in the form of thick mats of glass wool or other sound-absorbing material. The production of these known silencing sub-ceilings is very labor intensive. In the area at the holes in the plasterboard boards, the under ceiling can easily be damaged. Such sub-ceilings can be particularly easily damaged by impact. In addition, in the area of relatively large holes in the plasterboard boards on the visible side of the lower ceiling, dust is deposited, causing undesirable local discoloration of the decorative, porous coating.

Formålet med opfindelsen er at anvise et lyddæmpende underdæk (underloft) af den indledningsvis nævnte art, som kan fremstilles med det mindst mulige antal arbejdsoperationer og er 35 ufølsomt over for stødbelastninger, og hvor der ikke optræder misfarvninger på grund af lokal støvaflejring.The object of the invention is to provide a sound-absorbing lower tire (lower air) of the type mentioned above, which can be manufactured with the least possible number of working operations and which is insensitive to shock loads and where no discoloration occurs due to local dust deposition.

DK 168123 B1 2DK 168123 B1 2

Dette opnås ifølge opfindelsen derved, at pladerne selv er porøse og lyddæmpende og består af træspåner eller organiske fibermaterialer, der er indbyrdes forbundet ved hjælp af et binde-middel, eller af træspåner med andele af uorganiske materialer, at pladerne ved hjælp af not-og-fjer-forbindelser er sammenholdt på træk- og trykstabil måde, at den dekorative, porøse 5 belægning er påført pladerne direkte, og at bæreprofilerne og/eller gmndprofileme består af flere profilstykker, som er indbyrdes forskydelige i profil-længderetningen, hvilke profilstykker er indbyrdes forbundet ved hjælp af profil-forbindelsesstykker.This is achieved according to the invention in that the boards themselves are porous and sound-absorbing and consist of wood chips or organic fiber materials interconnected by means of a binder, or of wood chips with proportions of inorganic materials, - spring joints are bonded in a tensile and pressure-stable manner, that the decorative, porous coating is applied directly to the plates and that the carrier profiles and / or overall profiles consist of several profile pieces which are slidable in the profile longitudinal direction, which profile pieces are mutually connected using profile connectors.

Skønt underdækket således udgør én ganske kompakt, stor dækflade, der på grund af not-fjer-10 forbindelserne næsten er stiv, så kan denne ene flade dog uden problemer følge med længdeændringer, der fremkommer ved indvirkning af fysiske faktorer alene, da bære- hhv. grund-profilerne kan udføre disse bevægelser, selvom hele underdækket er fast forbundet med bæreprofilen.Thus, although the lower deck constitutes one quite compact, large deck surface which, due to the groove-spring connections, is almost rigid, this one surface can easily follow length changes resulting from the effect of physical factors alone, since . the ground profiles can perform these movements, even if the entire lower deck is firmly connected to the carrier profile.

15 Et således dannet underdæk udviser også stor stabilitet, eftersom det gennemgående består af mekanisk stabile plader, der ingen perforering har. Arbejdsforbruget ved monteringen af underdækket er relativt lille, eftersom der på grund af pladernes lyddæmpende virkning ikke kræves nogen bagbeklædning med lyddæmpende materiale, og den dekorative, porøse belægning i én arbejdsgang kan anbringes direkte på bæreprofilet.A sub-deck thus formed also exhibits great stability, since it is generally composed of mechanically stable plates which have no perforation. The working consumption of the lower deck is relatively small, since due to the sound-dampening effect of the panels, no back cover with sound-dampening material is required, and the decorative, porous coating in one work can be applied directly to the carrier profile.

2020

De organiske fiberstoffer kan fortrinsvis bestå af hør- og hampstumper eller strå.The organic fiber fabrics may preferably consist of flax and hemp stumps or straw.

Det er ligeledes muligt at udforme fjerene for not-fjer-forbindelsen i ét stykke med pladerne (krav 3), og ligeledes anvende løse fjer, således at der på pladerne kun findes noter (krav 4).It is also possible to design the feathers for the groove-feather joint in one piece with the plates (claim 3), and also use loose feathers so that only the notes (claim 4) are present on the plates.

2525

Pladedimensioneme kan variere indenfor forholdsvis vide grænser. De i krav 5 til 7 angivne dimensioner er fordelagtige. Ved pladetykkelser ifølge krav 5 opnår man også ved plader med stor flade en tilstrækkelig stabilitet. Pladeflader ifølge krav 6 er stadig let producerbare og håndterlige, og alligevel tilstrækkelig store til at der kan opnås gode arbejdsfremskridt ved 30 montagen. Rektangulære plader er særligt fordelagtige, især sådanne, der har form som langagtige rektangler, således som det er angivet i krav 7. Sådanne plader lægges i samlinger. Eftersom pladeformen ikke længere er synlig på det færdige loft, kan pladedimensionerne vælges med henblik på en særligt fordelagtig forarbejdning, altså udformes med relativt store flader, hvorved der med en langagtig, rektangulær form opnås en særlig uproblematisk læg-35 ning.The plate dimensions may vary within relatively wide limits. The dimensions specified in claims 5 to 7 are advantageous. At plate thicknesses according to claim 5, even with high surface plates, sufficient stability is obtained. Sheet surfaces according to claim 6 are still easily producible and manageable, and yet sufficiently large to achieve good work progress at installation. Rectangular plates are particularly advantageous, especially those having the shape of long rectangles, as set forth in claim 7. Such plates are put into joints. Since the plate shape is no longer visible in the finished ceiling, the plate dimensions can be selected for a particularly advantageous processing, ie with relatively large surfaces, thereby providing a particularly problematic laying with a long, rectangular shape.

Pladerne sammenskrues med fordel med bæreprofilerne (krav 8). Til dette formål anvendes med fordel skruer med forsænket hovede. Skruehovederne dækkes fordelagtigt med elastisk DK 168123 B1 3 kit (krav 9). Dette muliggør en bekvem fastgørelse af loftspladerne. Ved hjælp af dækningen med en elastisk kit opnås, at der heller ikke ved en vis bevægelse af skruerne på grund af pladernes uundgåelige udvidelsesbevægelser i forhold til bæreprofilerne opstår en ridsning af den dekorative, porøse belægning, f.eks. et pudslag.The plates are advantageously screwed together with the supporting profiles (claim 8). For this purpose, countersunk head screws are advantageously used. The screw heads are advantageously covered with elastic DK 168123 B1 3 kit (claim 9). This allows for convenient attachment of the ceiling panels. By means of the cover with an elastic kit it is obtained that even with a certain movement of the screws due to the inevitable extension movements of the plates relative to the supporting profiles, a scratching of the decorative, porous coating, e.g. a blow.

55

En bærekonstruktion af grund- og bæreprofiler, som kan forskydes i forhold til hinanden, tillader forskydninger inden for underloftskonstruktionen, uden at der er fare for, at der sker løsrivelse ved fastgørelsesstederne, f.eks. ved sammenskruningerne.A support structure of base and support profiles which can be displaced relative to one another allows displacements within the sub-ceiling structure without the risk of detachment at the attachment points, e.g. at the intersections.

10 Pladerne kan også udvise en ikke-brændbar belægning (krav 12). Foruden plader af samme størrelse kan der også forekomme tilpasningsstrimler, der er væsentligt smallere. Derved muliggøres en tilpasning til loftsstørrelserne, uden at der opstår for meget spild. Underdækket ifølge opfindelsen kan tilpasses vilkårlige rumstørrelser, således for eksempel også skævvinklet forløbende vægge eller afrundede vægge.The plates may also exhibit a non-combustible coating (claim 12). In addition to sheets of the same size, matching strips that are substantially narrower may also be present. This allows an adjustment to the ceiling sizes without causing too much waste. The sub-deck according to the invention can be adapted to any room size, for example also inclined angular or rounded walls.

1515

Med henblik på at undgå tryk- og trækspændinger indeni underloftet ved meget store underlofter, henholdsvis reducere disse, er der med fordel forudset udvidelsesfuger (krav 13,14).In order to avoid compressive and tensile stresses inside the lower ceiling by very large lower ceilings or to reduce these, respectively, expansion joints are advantageously provided (claim 13,14).

Opfindelsen skal i det følgende forklares nærmere i forbindelse med tegningen, hvor 20 fig. 1 viser et planbillede af et underdæk, fig. 2 et lodret snit langs linien Il-Il i fig. 1 i en forstørret målestok i forhold til fig. 1, fig. 3 et lodret snit langs linien lll-lll i fig. 1, fig. 4 et billede af en enkelt plade, fig. 5 et del-tværsnit gennem pladen ifølge fig. 4 langs linien V-V i fig. 4 i en forstørret 25 målestok i forhold til fig. 4, fig. 6 et tilsvarende del-tværsnit langs linien VI-VI i fig. 4, fig. 7 i eksploderet billede et forbindelsessted mellem naboplader, og fig. 8 et bæreprofil i perspektivbillede, og som i længderetningen er sammensat af profilstykker.BRIEF DESCRIPTION OF THE DRAWINGS In the following, the invention will be explained in more detail in connection with the drawing, in which FIG. 1 is a plan view of a lower deck; FIG. 2 shows a vertical section along the line Il-Il in FIG. 1 on an enlarged scale relative to FIG. 1, FIG. 3 is a vertical section along the line III-III in FIG. 1, FIG. 4 is a view of a single plate; FIG. 5 is a partial cross-section through the plate of FIG. 4 along the line V-V in FIG. 4 on an enlarged scale relative to FIG. 4, FIG. 6 shows a corresponding partial cross-section along the line VI-VI in FIG. 4, FIG. 7 in an exploded view shows a connection point between neighboring plates; and FIG. 8 is a perspective view of a carrier profile, which is longitudinally composed of profile pieces.

3030

Det med fællesbetegnelse U lyddæmpende underdæk omfatter plader D og en bærekonstruktion T, der er sammensat af grund- og bæreprofiler, som krydser hinanden vinkelret. Først vil en plade D ifølge fig. 4 til 6 blive betragtet. Pladen D har form som et langagtigt rektangel med bredden b og længden I. Forholdet b:l kan f.eks. være 1:6. Det samlede areal af dækpladen 35 kan f.eks. andrage ca. 2 kvadratmeter. Tykkelsen S af pladen D kan f.eks. andrage 18 mm.Commonly referred to as U, sound attenuating lower decks comprise plates D and a carrier structure T composed of basic and supporting profiles that intersect at right angles. First, a plate D according to FIG. 4 to 6 are considered. The plate D has the shape of a longitudinal rectangle of width b and length I. The ratio b: l can e.g. be 1: 6. The total area of the cover plate 35 can e.g. andrage approx. 2 square meters. The thickness S of the plate D can e.g. 18 mm.

Pladen består, som det her skal antages, hovedsageligt af træspåner, der er indbyrdes forbundet ved hjælp af et klæbemiddel.The plate, as it should be assumed, consists mainly of wood chips, which are interconnected by means of an adhesive.

DK 168123 B1 4DK 168123 B1 4

Den i fig. 4 viste plade har to noter 1 og to fjer 3. Fjerene 3 for en plade kan passende gribe ind i noter på nabopladen, fig. 5 og 6 kan også opfattes således, at de er delsnit af to naboplader. Forbindelsen mellem disse plader vises så i eksploderet fremstilling. Fjeren 3 ifølge fig. 5 kan indgribe passende i noten 1 ifølge fig. 6, hvorved fjeren skubbes så langt ind, at naboplader 5 ligger an mod hinanden uden fuger.The FIG. 4 shows two grooves 1 and two feathers 3. The springs 3 for a plate can suitably engage grooves on the neighboring plate; 5 and 6 can also be interpreted as being partial sections of two neighboring plates. The connection between these plates is then shown in exploded manufacture. The spring 3 of FIG. 5 may suitably engage the groove 1 of FIG. 6, whereby the spring is pushed so far that neighboring plates 5 abut each other without joints.

Bærekonstruktionen T består af flere, indbyrdes parallelle, øvre grundprofiler 4 og flere, ligeledes indbyrdes parallelle, nedre bæreprofiler 5, der krydser de øvre grundprofiler 4 retvinklet.The support structure T consists of several, mutually parallel, upper basic profiles 4 and several, also parallel, lower carrier profiles 5, which intersect the upper basic profiles 4 at right angles.

Alle grund- og bæreprofiler 4 og 5 har det samme C-formede tværsnit med en stiver 6 og 10 flige 7, 8, som på deres kanter er afbøjet i en spids vinkel, hvorved der opstår kantombøjnin-ger 9,10, der peger mod stiveren 6.All base and support profiles 4 and 5 have the same C-shaped cross section with a strut 6 and 10 tabs 7, 8 which are deflected at their edges at an acute angle, thereby forming edge bends 9,10 pointing towards stiffener 6.

I den nedre bæreprofil er der ophængt vinkelankeret 11,12, som undergriber kantombøjnin-gerne 9,10. Disse er hageformet konstrueret på deres øvre ender og griber over kantombøj-15 ningeme 9,10 af den øvre grundprofil 4. Ved denne type ophængning er de nedre bæreprofiler 5 forskydelige i længderetningen for det øvre gmndprofii 4, hvilket antydes ved hjælp af dobbeltpilen 13. Særligt de nedre bæreprofiler 5, men dog også de øvre grundprofiler 4, kan være sammensatte i længderetningen og til dette formål have den i fig. 8 viste udformning. Det skal antages, at fig. 8 viser et nedre bæreprofil 5. Dette bæreprofil er sammensat af profilstyk-20 ker 5a, 5b og et profil-forbindelsesstykke 14. Der kan imidlertid også forekomme mere end to profilstykker og mere end ét profil-forbindelsesstykke 14. Profil-forbindelsesstykket 14 har et omtrentligt U-formet tværsnit og undergriber kantombøjningerne 9,10 på profilstykket 5a, 5b med sine øvre kanter. De nedre kanter 15,16 griber ind i inderkanterne 17,18 på profilstykkerne 5a, 5b, hvorved der opnås en nøjagtig, teleskopagtig føring af mellemstykket 14 i profilstyk-25 kerne 5a, 5b. Ved hjælp af yderligere påskubning af profilstykkerne 5a, 5b bliver bæreprofilet 5 forkortet og forlænget ved hjælp af delvis udtrækning af profil-forbindelsesstykket 14.In the lower support profile, angular anchor 11,12 is suspended which interferes with the edge bends 9,10. These are chin-shaped on their upper ends and grip over the edge bends 9,10 of the upper basic profile 4. In this type of suspension, the lower support profiles 5 are longitudinally displaceable for the upper edge profile 4, which is indicated by the double arrow 13. In particular, the lower support profiles 5, but also the upper basic profiles 4, may be longitudinally composed and for this purpose have the one shown in FIG. 8. It should be assumed that FIG. 8 shows a lower carrier profile 5. This carrier profile is composed of profile pieces 5a, 5b and a profile connector 14. However, more than two profile pieces and more than one profile connector 14. The profile connector 14 may also have one. approximately U-shaped cross-section and interferes with the edge bends 9,10 of the profile piece 5a, 5b with its upper edges. The lower edges 15,16 engage the inner edges 17,18 of the profile pieces 5a, 5b, thereby providing an accurate, telescoping guide of the intermediate piece 14 in the profile pieces 5a, 5b. By further pushing the profile pieces 5a, 5b, the carrier profile 5 is shortened and extended by partial pull-out of the profile connector 14.

De øvre grundprofiler 4 er på kendt måde ophængt på et råloft. I fig. 1 er vist ophængningspunkter 2.The upper basic profiles 4 are suspended in a known manner on a raw ceiling. In FIG. 1, suspension points 2 are shown.

3030

Ved monteringen af underloftet bliver plader D efter hinanden fastgjort til bærekonstruktionen T, efter at bærekonstruktionen er ophængt på råloftet. Til dette formål bliver pladerne D lagt ind mod de nedre bæreprofiler og fastgjort ved hjælp af skruer 19. Skruerne 19 har hoveder 19a, som forsænkes i pladerne D. Hullerne, som forbliver nedenunder hovederne 19a, bli-35 ver udfyldt med elastisk kit. Ved fastgørelsen af en tilstødende plade bliver pladekanterne påført lim, og den følgende plade bliver fugeløst skubbet ind mod den allerede fastgjorte plade, hvorved fjerene for næste plade bliver skubbet ind i noterne 1 på den allerede monterede plade. Pladerne lægges i række, hvorved der bliver lagt vægt på, at stødfugerne 21 i en række DK 168123 B1 5 er forskudt i forhold til stødfugerne 22 i en tilstødende række. Derved opnår man en særlig god forbindelse mellem pladerne. Hver plade bliver ved hjælp af skruer 19 sammenskruet med det nedre bæreprofil 5, når den er lagt på i tilslutning til en naboplade.In mounting the lower ceiling, plates D are successively attached to the supporting structure T, after the supporting structure is suspended on the raw ceiling. For this purpose, the plates D are inserted against the lower support profiles and secured by screws 19. The screws 19 have heads 19a which are recessed in the plates D. The holes which remain below the heads 19a are filled with elastic putty. In attaching an adjacent plate, the edge of the plate is applied to glue and the following plate is pushed inwardly towards the already attached plate, whereby the feathers for the next plate are pushed into the grooves 1 of the already mounted plate. The plates are laid in a row, whereby it is emphasized that the bumpers 21 in a row DK 168123 B1 5 are offset relative to the bumpers 22 in an adjacent row. This creates a particularly good connection between the plates. Each plate is screwed together with the lower carrier profile 5 by means of screws 19 when it is mounted adjacent to a neighboring plate.

5 I stedet for plader D med ud i ét stykke formede fjer 3, som de hidtil er beskrevet, kan der også anvendes separate lister 23 som fjer. Pladerne D’ har så udelukkende noter 24, hvori de separate fjer-lister 23 griber ind.5 Instead of plates D with one-piece shaped feathers 3, as they have been described heretofore, separate moldings 23 can be used as feathers. The plates D 'then have exclusively notes 24 in which the separate feather moldings 23 intervene.

På grund af uundgåelige længdeændringer i underloftet er der forudset udvidelsesfuger 26 10 langs væggene 25. Disse udvidelsesfuger bliver dækket af lister 27, der er fastgjort på vedkommende væg 25. Ved meget store rum bliver underloftet opdelt i felter, mellem hvilke der igen befinder sig udvidelsesfuger 28. Sådanne udvidelsesfuger slås bro over ved hjælp af fjer 29, som fortrinsvis er fast forankret i en plade D'-j og kan glide i en naboplade D’2. Fjeren 29 har til dette formål et spillerum i noten 30 på pladen D2.Due to inevitable length changes in the lower ceiling, expansion joints 26 10 are foreseen along the walls 25. These expansion joints are covered by moldings 27, which are attached to the relevant wall 25. In very large spaces, the lower ceiling is divided into fields between which again expansion joints are located. 28. Such expansion joints are bridged by feathers 29, which are preferably firmly anchored in a plate D'-j and can slide in a neighboring plate D'2. For this purpose, the spring 29 has a clearance in the groove 30 on the plate D2.

1515

Efter at pladerne D er monteret, bliver, såfremt dette er nødvendigt, overfladen gjort plan, f.eks. ved afslibning og eventuelt spartling. Allerede ved lægningen af de enkelte plader bliver overskudslim, der træder ud af sammenstødsstederne, fjernet. Efter planeringen af pladernes underside bliver der påført en dekorativ, porøs belægning S, f.eks. et pudslag. Derefter er un-20 derloftet (underdækket) færdigfremstillet.After the plates D are mounted, the surface becomes flattened, e.g. by grinding and possibly spartling. Already during the laying of the individual plates, excess adhesive exiting the impact sites is removed. After leveling the underside of the plates, a decorative porous coating S is applied, e.g. a blow. Then the under-ceiling (under deck) is finished.

Claims

1. Sound-absorbing lower decks with a carrier structure of parallel basic profiles and on these displaceable parallel carrier profiles, which cross the basic profiles, with a few 5 rigid plates fixed to the carrier profiles without spaces and with a decorative, porous coating applied on the spot and constitutes the visible part of the lower deck, thereby forming one compact covering surface (ceiling plate), characterized in that the plates (D) themselves are porous and attenuating and consist of wood shavings or organic fiber materials interconnected by means of a binder or wood chips. with proportions of inorganic material, the plates (D) being mutually tensile and pressure stable together by groove-spring connections (1,3; 23, 24), the decorative porous coating (S) are laid directly on the plates and that the supporting profiles (5) and / or the basic profiles (4) consist of several profile pieces which are displaceable in the profile longitudinal direction, which profile pieces e. r are interconnected by means of profile connectors (14). 15

Lower deck according to claim 1, characterized in that the organic fiber fabrics consist of flax or hemp stumps or straw.

Lower deck according to claims 1-2, characterized in that the springs (3) are formed in one piece with the plates (D), whereby on a plate (D) both feathers (3) and grooves (1) are provided. and a notched plate edge is opposite to a feathered plate edge.

Sub-deck according to claims 1-2, characterized in that all plate edges have grooves (24) and the springs (23) are formed by separate strips. 25

Lower deck according to one of the preceding claims, characterized in that the thickness (S) of the plate (D) is in the range of 15 mm to 30 mm, preferably approx. 20 mm.

Lower deck according to one of the preceding claims, characterized in that the plates (D) 30 have an area in the range of 1 m2 to 3 m2, preferably approx. 2 m2.

Sub-deck according to one of the preceding claims, characterized in that the plates (D) are rectangular and the aspect ratio is in the range of 1: 1 to 1: 8, and preferably amounts to approx. 6: 1.

Lower deck according to one of the preceding claims, characterized in that the plates (D) are screwed together with the supporting profiles (5). DK 168123 B1 7

A lower tire according to claim 8, characterized in that the screw heads (19a) are covered with elastic kit (20).

Lower deck according to claim 10, characterized in that the base and supporting profile (4, 5) have a C-shaped cross-section and have edge bends (9,10) which form an acute angle with the profile side walls (7,8). and that the angular anchors (11) fastened to the carrier profiles (5) overlap the edge bends (9,10) of the basic profile (4) and can slide along it.

Lower deck according to claim 11, characterized in that the profile connecting pieces (14) 10 are U-shaped and are gripped on the edges of their tabs by profile pieces adjacent to the edge bends (9,10).

Lower deck according to one of the preceding claims, characterized in that the plates (D) exhibit a non-combustible coating, e.g. an expandable mica coating. 15

Lower deck according to one of the preceding claims, characterized in that the lower deck (U) is connected to the space wall (25) via expansion joints (26) and the expansion joints are preferably covered with strips (27) which are fixed to the space walls (25) and abuses or undermines the undercover (U). 20

Lower deck according to one of the preceding claims, characterized by expansion joints (28) in the lower deck, where preferably feathers (29) can slide in the grooves (30) on the plates (D'-, D ^) in the area of the expansion joints. 25