DE4123593C2 - Method for producing ceiling-side noise and heat insulation in a vehicle - Google Patents

Method for producing ceiling-side noise and heat insulation in a vehicle

Info

Publication number
DE4123593C2
DE4123593C2 DE4123593A DE4123593A DE4123593C2 DE 4123593 C2 DE4123593 C2 DE 4123593C2 DE 4123593 A DE4123593 A DE 4123593A DE 4123593 A DE4123593 A DE 4123593A DE 4123593 C2 DE4123593 C2 DE 4123593C2
Authority
DE
Germany
Prior art keywords
sound
foam
ceiling
heat
glass fiber
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.)
Expired - Fee Related
Application number
DE4123593A
Other languages
German (de)
Other versions
DE4123593A1 (en
Inventor
Richard Dr Herz
Hans-Peter Dipl Ing Kalt
Adolf Dipl Ing Marold
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz AG
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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Priority to DE4123593A priority Critical patent/DE4123593C2/en
Publication of DE4123593A1 publication Critical patent/DE4123593A1/en
Application granted granted Critical
Publication of DE4123593C2 publication Critical patent/DE4123593C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B32B5/22—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
    • 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
    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0212—Roof or head liners
    • B60R13/0225—Roof or head liners self supporting head liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
    • 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
    • B32B2266/06—Open cell 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
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—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
    • B32B2375/00—Polyureas; Polyurethanes
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Herbeiführen einer deckenseitigen Geräusch- und Wärmedämmung in einem Fahrzeug, gemäß dem Oberbegriff des Anspruchs.The invention relates to a method for bringing about a ceiling-side noise and thermal insulation in a vehicle, according to the preamble of the claim.

Eine auf diese Weise hergestellte, selbsttragende geräusch- und wärmedämmend wirkende Innendecke ist durch das DE 79 07 617 U1 bekannt und zeichnet sich durch ihre die nutzbare Innenraumhöhe nur unbedeutend reduzierende Materialstärke aus. Wegen der Lochung der Innendecke leidet deren Stabilität, so daß es beim Einbau der Innendecke, bei der diese unter Beibehaltung einer elastischen Vorspannung vorübergehend stark verformt wird, zum Einknicken kommen kann.A self-supporting noiseless and manufactured in this way The interior ceiling with a thermal insulation effect is provided by DE 79 07 617 U1 known and is characterized by the usable interior height only insignificantly reducing material thickness. Because of the Perforation of the inner ceiling suffers from it Stability so that when installing the interior ceiling, this temporarily while maintaining an elastic bias is strongly deformed, may buckle.

Durch die US 20 77 262 ist es zwar bereits bekannt, einer tex­ tilen, nicht selbsttragenden Deckenverkleidung dachseitig einen Antidröhnbelag mit Abstand nachzuschalten, jedoch sind der Schalldurchlässigkeit der Deckenverkleidung enge Grenzen ge­ setzt, da deren schalldurchlässiges Grundmaterial zur Sicht­ seite hin eine weitgehend schallundurchlässige Haftschicht für eine Beflockung aufweist.From US 20 77 262 it is already known to be a tex tile, not self-supporting roof cladding on the roof side Anti-drumming topping afterwards at a distance, but they are Sound permeability of the ceiling cladding narrow limits sets, because their sound-permeable base material is visible a largely soundproof adhesive layer for has flocking.

Es ist Aufgabe der Erfindung, ohne Vergrößerung des Herstel­ lungsaufwandes den Aufbau der Innendecke verfahrenstechnisch so zu gestalten, daß deren Steifigkeit gesteigert wird, so daß selbst große montagebedingte Verformungen der Innendecke keine Knickerscheinungen hervorrufen können. Weiterhin soll die In­ nendecke so plaziert werden, daß eine noch bessere Geräusch- und Wärmedämmung erzielt werden kann.It is an object of the invention without enlarging the manufacturer the construction of the inner ceiling procedurally so to design that their rigidity is increased so that even large installation-related deformations of the inner ceiling none Can cause kinking. Furthermore, the In  ceiling are placed so that an even better noise and thermal insulation can be achieved.

Diese Aufgabe wird bei einer gemäß dem Oberbegriff des Patent­ anspruches hergestellten Innendecke durch dessen kennzeichnende Verfahrensschritte gelöst. Die durch das Lochen des PU-Schaumes eintretende Festigkeitsminderung wird durch die Glasfaseraufla­ gen wieder egalisiert, wobei trotz fehlender Löcher in den Auf­ lagen aufgrund der vorbestimmten Faserdichte eine Durchschal­ lung möglich ist.This task is performed according to the preamble of the patent claim manufactured inner ceiling by its characteristic Process steps solved. By punching the PU foam reduction in strength is caused by the glass fiber coating equalized again, despite the lack of holes in the opening lay through due to the predetermined fiber density is possible.

Die erfindungsgemäße Innendecke, deren PU-Schaum von einer Aus­ gangsstärke von ca. 20 mm auf ca. 6 mm zusammengepreßt wird, ist äußerst formstabil und weist immer noch wärme- und schall­ dämmende Eigenschaften in begrenztem Umfange auf. Die dachsei­ tig in den durch Quer-, Längs- und/oder Diagonalspriegeln be­ grenzten Feldern angeordneten schallabsorbierenden und wärme­ isolierenden Schaumplatten beanspruchen keinen zusätzlichen Raum und der zwischen Innendecke und Schaumplatten angestrebte Abstand von ca. 20 mm läßt sich leicht dadurch einhalten, daß die Querspriegel um dieses Maß über die Längs- und Diagonal­ spriegel überstehen und als Befestigungsbasis für die Innen­ decke herangezogen werden.The interior ceiling according to the invention, the PU foam of one is compressed from approx. 20 mm to approx. 6 mm, is extremely dimensionally stable and still exhibits heat and sound insulating properties to a limited extent. The badger tig in the by transverse, longitudinal and / or diagonal brackets bordered fields arranged sound absorbing and heat insulating foam sheets do not require any additional Space and the desired between the interior ceiling and foam panels Distance of approx. 20 mm can easily be maintained by the fact that the crossbars by this amount across the longitudinal and diagonal protruding bows and as a fastening base for the inside ceiling can be used.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. An embodiment of the invention is described below the drawing explained in more detail.  

Die Darstellung zeigt einen in Fahrzeuglängsrichtung verlau­ fenden Schnitt durch einen Deckenbereich eines nicht näher dar­ gestellten Omnibusses und gibt einen Abschnitt einer Innendecke 1 wieder, der an einem Querspriegel 2 zur Anlage gebracht und dort durch nicht dargestellte Mittel wie Klammern befestigt ist. Der Querspriegel 2 bildet einen Teil eines Spriegelverban­ des 3, der noch Längsspriegel 4 und nicht gezeigte Diagonal­ spriegel umfaßt. Überdeckt wird der Spriegelverband 3 durch eine Dachbeplankung 5, an deren Dachinnenseite 6 in den durch den Spriegelverband 3 umgrenzten Feldern ein geräusch- und wärmedämmender Schaum 7 angelagert ist.The illustration shows a section in the longitudinal direction of the vehicle through a ceiling area of a bus (not shown in more detail) and shows a section of an interior ceiling 1 which is brought to bear on a crossbar 2 and is fastened there by means not shown, such as clips. The cross bow 2 forms part of a Spriegelverban of 3 , which also comprises longitudinal bow 4 and diagonal bow, not shown. The bow frame 3 is covered by a roof covering 5 , on the inside of the roof 6 in which a noise and heat-insulating foam 7 is deposited in the fields delimited by the bow frame 3 .

Die Höhe der Längsspriegel 4 entspricht der Dicke des Schaumes 7 und da die Querspriegel 2 die Längsspriegel 4 überragen, ist der Schaum 7 mit Abstand der Innendecke 1 nachgeschaltet. Diese besteht aus einem PU-Schaum 8, dessen Ausgangsstärke etwa 20 mm beträgt und der mit einer gleichmäßigen Lochung 9 versehen ist. Ober- und unterseitig wird der PU-Schaum 8 von jeweils einem Glasfaservlies 10 begrenzt, das eine Gewichtsobergrenze von ca. 200 g/m² aufweist und das mit einer schalldurchlässigen Struk­ tur versehen ist, was dadurch erreicht ist, daß die Glasfaser­ stärke so gewählt wird, daß bezogen auf die vorgegebene Ge­ wichtsobergrenze zwischen den einzelnen Glasfasern gerade noch eine freie Schalldurchtrittsmöglichkeit verbleibt.The height of the longitudinal bow 4 corresponds to the thickness of the foam 7 and since the transverse bow 2 projects beyond the longitudinal bow 4 , the foam 7 is connected at a distance from the inner ceiling 1 . This consists of a PU foam 8 , the initial thickness of which is approximately 20 mm and which is provided with a uniform perforation 9 . The top and bottom of the PU foam 8 is limited by a glass fiber fleece 10 , which has an upper weight limit of about 200 g / m² and which is provided with a sound-permeable structure, which is achieved in that the glass fiber strength is chosen so that based on the predetermined weight limit Ge between the individual glass fibers just a free passage of sound remains.

Zum Fahrgastraum 11 hin folgt auf das zugeordnete Glasfaser­ vlies 10 eine Abdeckung 12, die aus einer gelochten Dekor­ schicht oder einem Stoffbezug bestehen kann. Unter Beigabe von Klebstoff sind die Glasfaservliese 10 und die Abdeckung 12 am PU-Schaum 8 bzw. untereinander angelagert und werden im Zuge eines mit einer Wärmebehandlung einhergehenden Preßvorganges, bei dem unter Beibehaltung des Lochdurchmessers der Lochung 9 der PU-Schaum 8 bis auf 6 mm zusammengedrückt wird, fest mit­ einander verbunden, so daß eine vorgefertigte, leicht hand­ habbare und durch rückseitig angeklebte, nicht gezeigte Halter leicht befestigbare Baueinheit geschaffen wird.Towards the passenger compartment 11 , the associated glass fiber fleece 10 is followed by a cover 12 , which may consist of a perforated decor layer or a fabric cover. With the addition of adhesive, the glass fiber nonwovens 10 and the cover 12 are attached to the PU foam 8 or to one another and are in the course of a pressing process associated with a heat treatment in which the PU foam 8 is maintained down to 6 mm while maintaining the hole diameter of the perforation 9 is compressed, firmly connected to each other, so that a prefabricated, easy-to-use and easily attachable unit is created by glued on the back, not shown holder.

Die durch die geringere Masse und die verhältnismäßig hohe Dichte des komprimierten PU-Schaumes 8 verbleibende Schallab­ sorptionsfähigkeit wird dadurch auf das gewünschte Maß ge­ bracht, daß Schall durch die Lochung 9 in den nachfolgenden Hohlraum 13 tritt und vom nachgeschalteten Schaum 7, der zudem noch gute Wärmedämmeigenschaften aufweist, absorbiert wird.The remaining mass due to the lower mass and the relatively high density of the compressed PU foam 8 Schallab sorption is brought to the desired level that sound passes through the perforation 9 in the subsequent cavity 13 and from the downstream foam 7 , which is also still good Has thermal insulation properties is absorbed.

Claims (1)

Verfahren zum Herbeiführen einer deckenseitigen Geräusch- und Wärmedämmung in einem Fahrzeug, insbesondere Omnibus, bei dem einer mit Löchern versehenen Innendecke aus wärme- und schall­ dämmendem PU-Schaum im Zuge eines mit einer Wärmebehand­ lung einhergehenden Preßvorganges ober- und unterseitig ein Glasfaservlies und zur Sichtseite hin darüber hinaus noch eine schalldurchlässige Abdeckung aufkaschiert wird, dadurch gekennzeichnet, daß bei einer Ausgangsstärke des PU-Schaumes (8) von etwa 20 mm, dieser zunächst gelocht wird, danach beidseitig das Glasfaser­ vlies (10) und sichtseitig die Abdeckung (12) aufgebracht wird, wobei das Glasfaservlies (10) bei einer Gewichtsobergrenze von ca. 200 g/m² durch Einsatz von Glasfasern vorbestimmter Stärke jeweils noch eine schalldurchlässige Struktur aufweist, daß danach der so hergestellte Materialverbund unter Wärmezufuhr verpreßt wird, wobei die Schaumstoffstärke unter Beibehaltung der Schalldurchlässigkeit mindestens um die Hälfte reduziert wird, und daß die Innendecke (1) einem an der Dachinnenseite (6) feldweise zwischen einem Spriegelverband (3) angelagerten, schallabsorbierenden und wärmeisolierenden, offenporigen Schaum (7) mit Abstand vorgelagert wird.A method for producing a ceiling-side noise and heat insulation in a vehicle, in particular a bus, in which a perforated inner ceiling made of heat and sound-insulating PU foam in the course of a pressing process associated with a heat treatment has a glass fiber fleece on the top and bottom and on the visible side In addition, a sound-permeable cover is laminated on, characterized in that with an initial thickness of the PU foam ( 8 ) of approximately 20 mm, this is first perforated, then the glass fiber fleece ( 10 ) is applied on both sides and the cover ( 12 ) is applied on the visible side is, the glass fiber fleece ( 10 ) at a weight limit of about 200 g / m² by using glass fibers of a predetermined thickness still has a sound-permeable structure, that the composite material thus produced is then pressed with the addition of heat, the foam thickness at least while maintaining the sound permeability ens is reduced by half, and that the inner ceiling ( 1 ) is placed in front of a field on the inside of the roof ( 6 ) between a bow ( 3 ), sound-absorbing and heat-insulating, open-cell foam ( 7 ).
DE4123593A 1991-07-17 1991-07-17 Method for producing ceiling-side noise and heat insulation in a vehicle Expired - Fee Related DE4123593C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4123593A DE4123593C2 (en) 1991-07-17 1991-07-17 Method for producing ceiling-side noise and heat insulation in a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4123593A DE4123593C2 (en) 1991-07-17 1991-07-17 Method for producing ceiling-side noise and heat insulation in a vehicle

Publications (2)

Publication Number Publication Date
DE4123593A1 DE4123593A1 (en) 1993-01-21
DE4123593C2 true DE4123593C2 (en) 1995-03-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7279214B2 (en) 2000-09-09 2007-10-09 EEEA Entwicklungsgesellschaft fur Akustik mbH Floor covering having a strong noise-reducing properties
CN106585726A (en) * 2016-10-28 2017-04-26 奇瑞汽车股份有限公司 Automobile skylight ceiling with opening and damping structure
DE10337007B4 (en) 2003-08-12 2019-02-21 Volkswagen Ag Sound-absorbing and stiffening element

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632550A1 (en) * 1996-08-13 1998-02-19 Moeller Plast Gmbh Wall or building element and process for its manufacture
US7267386B2 (en) 1996-08-13 2007-09-11 Rolf Hesch Motor vehicle passenger compartment heat insulation and dissipation
FR2762271B1 (en) * 1997-04-18 1999-05-14 Renault MOTOR VEHICLE PADDLE TRIM
DE29814539U1 (en) * 1998-08-13 1999-12-23 Wegmann & Co Gmbh, 34127 Kassel Device for protecting the interior of a passenger vehicle against heating by thermal radiation
ATE260190T1 (en) 1999-08-11 2004-03-15 Hp Chemie Pelzer Res & Dev Ltd COMPONENT WITH HIGH ABSORPTION EFFECT OVER A WIDE FREQUENCY RANGE
DE10044761A1 (en) * 2000-09-09 2002-04-18 Hp Chem Pelzer Res & Dev Ltd Soundproofing floor covering for the inside of vehicles, consists of a (non) textile surface connected to an existing floor covering using a micro-perforated film
DE102008017893B4 (en) * 2008-04-09 2022-08-25 Dr. Ing. H.C. F. Porsche Aktiengesellschaft flooring

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2077262A (en) * 1936-02-28 1937-04-13 Theodore M Prudden Ceil construction for roofed vehicles
DE7907617U1 (en) * 1979-03-19 1979-06-21 J.H. Benecke Gmbh, 3000 Hannover PRE-FABRICATED SELF-SUPPORTING INTERIOR LINING FOR CAR ROOFS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7279214B2 (en) 2000-09-09 2007-10-09 EEEA Entwicklungsgesellschaft fur Akustik mbH Floor covering having a strong noise-reducing properties
DE10337007B4 (en) 2003-08-12 2019-02-21 Volkswagen Ag Sound-absorbing and stiffening element
CN106585726A (en) * 2016-10-28 2017-04-26 奇瑞汽车股份有限公司 Automobile skylight ceiling with opening and damping structure

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Publication number Publication date
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