DE3534690C2 - - Google Patents

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Publication number
DE3534690C2
DE3534690C2 DE3534690A DE3534690A DE3534690C2 DE 3534690 C2 DE3534690 C2 DE 3534690C2 DE 3534690 A DE3534690 A DE 3534690A DE 3534690 A DE3534690 A DE 3534690A DE 3534690 C2 DE3534690 C2 DE 3534690C2
Authority
DE
Germany
Prior art keywords
self
panel according
soundproofing panel
foam layer
supporting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
DE3534690A
Other languages
German (de)
Other versions
DE3534690A1 (en
Inventor
Klaus Dipl.-Ing. Dr. 7440 Nuertingen De Greiner
Wolfgang 7333 Ebersbach De Guyot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ca Greiner und Soehne & Co Kg 7440 Nuertingen De GmbH
Original Assignee
Ca Greiner und Soehne & Co Kg 7440 Nuertingen De GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ca Greiner und Soehne & Co Kg 7440 Nuertingen De GmbH filed Critical Ca Greiner und Soehne & Co Kg 7440 Nuertingen De GmbH
Priority to DE19853534690 priority Critical patent/DE3534690A1/en
Publication of DE3534690A1 publication Critical patent/DE3534690A1/en
Application granted granted Critical
Publication of DE3534690C2 publication Critical patent/DE3534690C2/de
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
    • B32B19/04—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material
    • B32B19/047—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0285—Condensation resins of aldehydes, e.g. with phenols, ureas, melamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/022—Foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/72—Cured, e.g. vulcanised, cross-linked
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08—Glass
    • B32B2315/085—Glass fiber cloth or fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/14—Mineral wool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2361/00—Phenoplast, aminoplast
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2375/00—Polyureas; Polyurethanes

Description

Die Erfindung befaßt sich mit einer selbsttragenden Schalldämm­ platte aus einer Schaumstoffschicht, die auf beiden Seiten durch dünnere Schichten anderen Materials abgedeckt ist.The invention is concerned with self-supporting sound insulation plate made of a layer of foam that goes through on both sides thinner layers of other material is covered.

Derartige Schalldämmplatten werden bspw. im Automobilbau verwen­ det, um - unter der Motorhaube eingebaut - die Schallemission des Motors zu verringern. Sie werden jedoch auch in sehr vielen an­ deren Fällen eingesetzt, in denen die Ausbreitung von Schall vermindert werden soll.Such soundproofing panels are used, for example, in automobile construction det - in order - installed under the hood - the sound emission of the Engine to decrease. However, they are also used in very many whose cases are used in which the propagation of sound should be reduced.

Es sind selbsttragende Bauteile der eingangs genannten Art be­ kannt, bei denen eine Lage elastischen Schaumstoffes aus Weichpolyurethan besteht, die auf der einen Seite von einer in Form gezogenen, steifen Trägerplatte aus massivem oder ge­ schäumtem Material abgedeckt ist und auf der anderen Seite durch eine Decke aus dem gleichen Material oder aus Papier oder aus Kunststoff- oder Metallfolie abgedeckt sein kann (DE-GM 79 11 356) .There are self-supporting components of the type mentioned knows in which a layer of elastic foam There is soft polyurethane, which on one side of a in Molded, rigid support plate made of solid or ge foamed material is covered and on the other side by a blanket of the same material or of paper or of Plastic or metal foil can be covered (DE-GM 79 11 356).

Auch das DE-GM 82 11 797 offenbart eine schalldämmende Matte, bei der die Steifigkeit ausschließlich durch einen steifen Träger erreicht wird, auf den nichtsteife, ja "lappige" Schichten auf­ gebracht sind. DE-GM 82 11 797 also discloses a sound-absorbing mat the rigidity only by a rigid beam is achieved on the non-rigid, yes "lobed" layers are brought.  

Es sind auch Isolierplattenelemente bekannt (DE-GM 19 74 220), die aus Hartschaumstoffen, also steifem Material bestehen. Um die für eine selbsttragende Platte erforderliche Steifigkeit und Ei­ gentragfähigkeit zu erreichen, müssen derartige Platten aber eine gewisse Mindestdicke aufweisen, was ihr Gewicht unerwünscht er­ höht und aus Platzgründen - bspw. im Kraftfahrzeugbau - auch nicht immer möglich ist.There are also insulating plate elements known (DE-GM 19 74 220), which consist of rigid foam, i.e. rigid material. To the required rigidity and egg for a self-supporting panel To achieve load-bearing capacity, such plates have to have certain minimum thickness, which makes their weight undesirable high and for space reasons - for example in motor vehicle construction - too is not always possible.

Der Erfindung war demgemäß die Aufgabe gestellt, eine selbsttragende Schalldämmplatte möglichst leicht auszu­ bilden, dabei jedoch keine Einbußen an Eigentragfähigkeit und Schallabsorption hinzunehmen.The invention was therefore the task of a self-supporting Soundproofing panel as easy to remove form, but no loss of self-sustainability and Accept sound absorption.

Sie löst diese Aufgabe durch die im Hauptan­ spruch angegebenen Merkmale.It solves this task through the main one saying specified characteristics.

Steifer Polyurethan-, Phenol- oder Melaminharzschaum sehr ge­ ringer Dichte zeichnet sich durch ein äußerst geringes Raumge­ wicht und eine hohe Eigensteifigkeit aus. Es hat sich überra­ schenderweise gezeigt, daß er auch ein sehr hohes Schallabsorp­ tionsvermögen hat.Rigid polyurethane, phenol or melamine resin foam very ge Low density is characterized by an extremely small space important and a high inherent rigidity. It was amazing shearingly shown that he also has a very high sound absorption ability.

Da steifer Polyurethan-, Phenol- oder Melaminharzschaum leicht mechanisch verletzbar ist, kann er durch grobe mechaische Ein­ wirkungen (Kratzer usw.) leicht beschädigt werden. Dem beugen die erfindungsgemäß vorgesehenen, mechanisch ausreichend festen Ab­ deckschichten vor. Die durch die hohe mechanische Festigkeit be­ dingte Formstabilität dieser Abdeckschichten führt bei der durch die erfindungsgemäße Anordnung der Schichten erzielten Sandwich­ bauart zu einer im Hinblick auf das geringe Raum- und Flächenge­ wicht der gesamten Schalldämmplatte überraschenden Steifigkeit und damit zu der verlangten Eigentragfähigkeit.Because rigid polyurethane, phenol or melamine resin foam is light is mechanically vulnerable, it can be caused by rough mechanical input effects (scratches, etc.) are easily damaged. They bow to that According to the invention, mechanically sufficiently strong from surface layers before. The be by the high mechanical strength The dimensional stability of these cover layers is carried out by the arrangement of the layers according to the invention achieved sandwich builds one with regard to the small space and area importance of the entire soundproofing panel with surprising stiffness and thus the required self-bearing capacity.

Den Abdeckschichten kommt somit eine Doppelfunktion zu: sie schützen die mechanisch leicht verletzbare steife Polyurethan-, Phenol- oder Melaminharzschaumschicht vor Beschädigung und sie nehmen in der Sandwichstruktur die durch das Eigengewicht sowie bei Belastung der Platte auftretenden Zug- und Schubkräfte auf und bewirken so die Steifigkeit und Eigentragfähigkeit der Schalldämmplatte.The cover layers thus have a double function: they protect the mechanically easily vulnerable rigid polyurethane, Phenolic or melamine resin foam layer from damage and them take in the sandwich structure by its own weight as well tensile and shear forces occurring when the plate is loaded and thus cause the rigidity and self-supporting capacity of the Sound insulation board.

Die Verwendung von luftdurchlässigen Materialien für die Abdeck­ schichten erlauben es der Luft, unter Wirkung des Schalldruckes in die Schalldämmplatte einzudringen oder sie gar zu durch­ dringen. Dies ist für die durch Aufzehrung der Schallenergie in der Platte oder einem belassenen Zwischenraum zwischen der Platte und der durch die Platte abgedeckten Fläche bewirkten Schallabsorp­ tion von ausschlaggebender Bedeutung. Die Abdeckschichten be­ stehen daher erfindungsgemäß aus (Polyurethan-)Weichschaum und aus schon ihrer Natur nach luftdurchlässigen Faservliesen, die in die äußeren Schaumstoffschichten eingeschmolzen sein können. So zeichnet sich insbesondere das vorgeschlagene Glasfaservlies durch geringes Flächengewicht bei trotzdem großer Dimensionsstabilität und großer Luftdurchlässigkeit aus. Unbrennbarkeit ist dem Werkstoff Glas ohnehin immanent.The use of breathable materials for the cover layers allow air to act under the influence of sound pressure penetrate into the soundproofing panel or even through it penetrate. This is due to the consumption of sound energy in the  Plate or a space left between the plate and the area of sound absorbed by the plate tion of crucial importance. The cover layers be are therefore according to the invention from (polyurethane) flexible foam and from their very nature air-permeable nonwovens, which in the outer foam layers can be melted. So the proposed glass fiber fleece stands out in particular due to the low basis weight but still large Dimensional stability and great air permeability. Incombustibility is inherent to glass.

Im übrigen kann die Luftdurchlässigkeit der Schalldämmplatte durch die Wahl der Dichte und/oder der Porengröße der Schaum­ stoffschichten beeinflußt und den Erfordernissen angepaßt werden.Otherwise, the air permeability of the soundproofing panel by choosing the density and / or the pore size of the foam layers of material are influenced and adapted to requirements.

Das vorgesehene Kaschieren gewährleistet eine innige Verbindung der Schichten und damit das volle Wirksamwerden der Sandwichbau­ weise. Das Kaschieren kann auf beliebige Art erfolgen, bspw. durch Aufbringen eines Sprühklebers, durch wasserlösliche oder lösungsmittellösliche Binder oder auch durch Einbringen einer unter Wärmeeinwirkung schmelzenden und nach Wiedererhärten die Schichten verbindenden Kunststoffolie.The lamination provided ensures an intimate connection of the layers and thus the full effect of sandwich construction wise. The lamination can be done in any way, for example. by applying a spray adhesive, by water soluble or solvent-soluble binder or by introducing one melting under the influence of heat and after re-hardening the Layers connecting plastic film.

Durch das Formpressen unter erhöhter Temperatur wird die im Roh­ zustand eher einer Matte entsprechende Schichtenkombination in eine formstabile Platte übergeführt. Hierbei wird der Schall­ dämmplatte nicht nur die erforderliche Kontour gegeben, die durch die Kontour der abzudeckenden Fläche bestimmt wird. Die hierbei entstehenden Sicken, Flächenwinkel, Mulden, Grate usw. erhöhen die Steifigkeit der Platte zusätzlich. Es werden aber auch die Schaumschichten der Platte unter dem Druck der Presse und der Einwirkung der erhöhten Temperatur nicht nur bleibend verformt, sondern auch komprimiert und damit ihre Stei­ figkeit und Formstabilität erhöht.By compression molding at elevated temperature, the raw more like a mat combination in transferred a dimensionally stable plate. Here the sound insulation board not only given the required contour by the contour of the area to be covered is determined. The one here resulting beads, surface angles, hollows,  Burrs etc. further increase the rigidity of the plate. It but also the foam layers of the plate under pressure the press and exposure to the elevated temperature not only permanently deformed, but also compressed and thus their stony ability and dimensional stability increased.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen enthalten. In der Zeichnung sind schematische Querschnitte durch Abschnitte der erfindungsgemäßen Schalldämm­ platte dargestellt:Further advantageous embodiments of the invention are in the Subclaims included. In the drawing are schematic Cross sections through sections of the soundproofing according to the invention plate shown:

Fig. 1 zeigt die Rohmatte vor dem Formverpressen, Fig. 1 shows the Rohmatte before compression molding,

Fig. 2 zeigt eine formverpresste Schalldämmplatte. Fig. 2 shows a molded soundproofing panel.

Hauptbestandteil der Schalldämmplatte ist eine Schicht 1 aus steifem Polyurethan-, Phenol- oder Melaminharzschaum, die im unverpressten Zustand ein Raumgewicht von 5 kg/m3 bis 35 kg/m3 und je nach Bedarf (gefordertes Schluckvermögen, auszukleidendes Volumen, Abmessungen der Platte usw.) eine Dicke von 5 mm bis 50 mm aufweisen kann.The main component of the soundproofing panel is a layer 1 made of rigid polyurethane, phenol or melamine resin foam, which in the uncompressed state has a density of 5 kg / m 3 to 35 kg / m 3 and depending on requirements (required swallowing capacity, volume to be lined, dimensions of the panel, etc .) can have a thickness of 5 mm to 50 mm.

Auf der in der Zeichnung oberen Seite ist die Polyurethan-, Phe­ nol- oder Melaminharzschaumschicht 1 mit einer Abdeckschicht 2 kaschiert, die aus dichtem, aber luftdurchlässigem Material, vorzugsweise aus einem vernetzten Kunststoff-Faservlies mit einem Flächengewicht von 20 g/m2 bis 500 g/m2 besteht. In manchen Fäl­ len ist es auch vorteilhaft, hierfür eine dünne Kunststoffplatte zu verwenden.On the upper side in the drawing, the polyurethane, Phe nol- or melamine resin foam layer 1 laminated with a covering layer 2 made of dense, but air-permeable material, preferably of a crosslinked plastic fiber fleece with a basis weight of 20 g / m 2 to 500 g / m 2 exists. In some cases it is also advantageous to use a thin plastic plate for this.

Auf der in der Zeichnung unteren Seite ist die Polyurethan-, Phenol- oder Melaminharzschaumschicht 1 mit einer Polyurethan- Weich-Blockschaumschicht 3 kaschiert, die im unverpressten Zu­ stand ein Raumgewicht von 10 kg/m3 bis 50 kg/m3 und eine Dicke von etwa 3 mm bis 5 mm aufweisen soll. On the lower side in the drawing, the polyurethane, phenol or melamine resin foam layer 1 is laminated with a polyurethane soft block foam layer 3 , which in the uncompressed state had a density of 10 kg / m 3 to 50 kg / m 3 and a thickness of should have about 3 mm to 5 mm.

Durch Einwirkung erhöhter Temperatur wird ein vorübergehendes Schmelzen der Oberfläche der Blockschaumschicht 3 erreicht, wobei in die erweichte Oberfläche der Blockschaumschicht 3 ein dünnes Faservlies, vorzugsweise ein Mineral- oder Glasfaservlies mit einem Flächengewicht von etwa 10 g/m2 bis etwa 100 g/m2 einge­ schmolzen werden kann.A temporary melting of the surface of the block foam layer 3 is achieved by the action of elevated temperature, a thin non-woven fabric, preferably a mineral or glass fiber non-woven fabric having a basis weight of about 10 g / m 2 to about 100 g / m 2 , in the softened surface of the block foam layer 3 can be melted.

Die so vorbereitete Schichtenkombination in Sandwichbauart wird anschließend in einer Presse unter Einwirkung von erhöhter Tem­ peratur von etwa 170°C bis etwa 230°C in die vorgesehene Raum­ form gedrückt. Dabei erweichen die Schichten und erstarren nach Absinken der Temperatur in der beabsichtigten Raumform.The sandwich-type layer combination prepared in this way becomes then in a press under the influence of elevated tem temperature of about 170 ° C to about 230 ° C in the space provided pressed form. The layers soften and solidify Lowering the temperature in the intended room shape.

Unter Einwirkung des aufgewendeten Pressendruckes verdichten sich dabei die Schaumstoffschichten 1 bis 3 je nach stellenweiser Plattendicke um etwa 15% bis um etwa 70%. So vermindert sich die Dicke der Platte im Bereich der Sicke 5 auf etwa die Hälfte bzw. erhöht sich das Raumgewicht an dieser Stelle 6 auf das Doppelte des Ausgangswertes. Im Bereich 7 beträgt die Verminderung der Dicke bzw. die Erhöhung des Raumgewichtes gegenüber dem Aus­ gangszustand etwa 1/3, im Bereich 8 tritt nur eine geringfügige Veränderung der Dicke und des Raumgewichtes ein.Under the influence of the press pressure applied, the foam layers 1 to 3 condense by about 15% to about 70% depending on the local plate thickness. The thickness of the plate in the area of the bead 5 is reduced to about half, or the density at this point 6 increases to twice the initial value. In area 7 , the reduction in thickness or the increase in density relative to the initial state is about 1/3, in area 8 there is only a slight change in thickness and density.

Claims (10)

1. Selbsttragende Schalldämmplatte aus einer Schaumstoffschicht, die auf beiden Seiten durch dünnere Schichten anderen Materials abgedeckt ist, dadurch gekennzeichnet, daß die Schaumstoffschicht (1) aus steifem Polyurethan-, Phenol- oder Melaminharzschaum sehr geringer Dichte und die beidseitigen Abdeckschichten (2; 3) aus einem form- und/oder dimensionsstabilen Trägermaterial, das dichter als das Material der Schaumstoffschicht (1), aber luftdurchlässig ist, bestehen, wobei die Schichten (1, 2, 3) aufeinander kaschiert und gemeinsam unter hoher Temperatur formverpreßt sind.1. Self-supporting soundproofing panel made of a foam layer which is covered on both sides by thinner layers of other material, characterized in that the foam layer ( 1 ) made of rigid polyurethane, phenol or melamine resin foam of very low density and the cover layers on both sides ( 2 ; 3 ) consist of a dimensionally stable and / or dimensionally stable carrier material which is denser than the material of the foam layer ( 1 ) but is permeable to air, the layers ( 1 , 2 , 3 ) being laminated to one another and pressed together under high temperature. 2. Selbsttragende Schalldämmplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Polyurethan-, Phenol- oder Melamin­ harzschaumschicht (1) im Ausgangszustand ein Raumgewicht von 5 kg/m3 bis 35 kg/m3 und eine Dicke von 5 mm bis 50 mm aufweist.2. Self-supporting soundproofing panel according to claim 1, characterized in that the polyurethane, phenol or melamine resin foam layer ( 1 ) in the initial state has a density of 5 kg / m 3 to 35 kg / m 3 and a thickness of 5 mm to 50 mm . 3. Selbsttragende Schalldämmplatte nach Anspruch 1, dadurch gekennzeichnet, daß die eine der Abdeckschichten (2) aus einer steifen Kunststoffplatte besteht. 3. Self-supporting soundproofing panel according to claim 1, characterized in that the one of the cover layers ( 2 ) consists of a rigid plastic plate. 4. Selbsttragende Schalldämmplatte nach Anspruch 1, dadurch gekennzeichnet, daß die eine der Abdeckschichten (2) aus einem flexiblen, dimensionsstabilen Flächengebilde besteht.4. Self-supporting soundproofing panel according to claim 1, characterized in that the one of the cover layers ( 2 ) consists of a flexible, dimensionally stable fabric. 5. Selbsttragende Schalldämmplatte nach Anspruch 4, dadurch gekennzeichnet, daß das Flächengebilde ein vernetztes Faservlies mit einem Flächengewicht von 20 g/m2 bis 500 g/m2 ist.5. Self-supporting soundproofing panel according to claim 4, characterized in that the fabric is a cross-linked fiber fleece with a weight per unit area of 20 g / m 2 to 500 g / m 2 . 6. Selbsttragende Schalldämmplatte nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die zweite der Abdeckschichten (3) aus einem Faservlies mit einem Flächengewicht von 10 g/m2 bis 100 g/m2 besteht.6. Self-supporting soundproofing panel according to claim 3 or 4, characterized in that the second of the cover layers ( 3 ) consists of a non-woven fabric with a basis weight of 10 g / m 2 to 100 g / m 2 . 7. Selbsttragende Schalldämmplatte nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß das Flächengebilde in die Außenseite einer auf die Polyurethan-, Phenol- oder Melaminharzschaumschicht (1) aufgebrachten Weichpolyurethan-Blockschaumschicht (3) ein­ geschmolzen wird.7. Self-supporting soundproofing panel according to claim 4 or 5, characterized in that the fabric is melted into the outside of a on the polyurethane, phenol or melamine resin foam layer ( 1 ) applied soft polyurethane block foam layer ( 3 ). 8. Selbsttragende Schalldämmplatte nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß das Faservlies ein Mineral- oder Glasfaservlies ist.8. Self-supporting soundproofing panel according to one of claims 5 to 7, characterized in that the nonwoven fabric is a mineral or glass fiber fleece. 9. Selbsttragende Schalldämmplatte nach Anspruch 7, dadurch gekennzeichnet, daß das Faservlies (4) ein Flächengewicht von 10 g/m2 bis 100 g/m2 aufweist.9. Self-supporting soundproofing panel according to claim 7, characterized in that the non-woven fabric ( 4 ) has a basis weight of 10 g / m 2 to 100 g / m 2 . 10. Selbsttragende Schalldämmplatte nach Anspruch 1, dadurch gekennzeichnet, daß die kaschierten Schichten (1, 2, 3) unter einer Temperatur von 170°C bis 230°C formverpreßt sind.10. Self-supporting soundproofing panel according to claim 1, characterized in that the laminated layers ( 1 , 2 , 3 ) are compression-molded at a temperature of 170 ° C to 230 ° C.
DE19853534690 1985-09-28 1985-09-28 Self-supporting sound-insulating panel Granted DE3534690A1 (en)

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DE3534690C2 true DE3534690C2 (en) 1992-06-17

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DE10025482B4 (en) * 2000-05-23 2005-12-22 Schaeffler Teppichboden Gmbh Continuous sound-absorbing additional mat for motor vehicles
DE10025482B9 (en) * 2000-05-23 2006-05-11 Ideal Automotive Gmbh Continuous sound-absorbing additional mat for motor vehicles
DE102019117717A1 (en) * 2019-07-01 2021-01-07 Wolf Gmbh Cladding part and sound insulation hood for a heat pump

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