WO1997048576A1 - Panneau isolant multicouche - Google Patents

Panneau isolant multicouche Download PDF

Info

Publication number
WO1997048576A1
WO1997048576A1 PCT/KR1997/000118 KR9700118W WO9748576A1 WO 1997048576 A1 WO1997048576 A1 WO 1997048576A1 KR 9700118 W KR9700118 W KR 9700118W WO 9748576 A1 WO9748576 A1 WO 9748576A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
insulation sheet
density region
insulation
plastic layer
Prior art date
Application number
PCT/KR1997/000118
Other languages
English (en)
Inventor
Hoe Hyon Kwon
Original Assignee
Daehan Chemical Ind. Co., Ltd.
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 Daehan Chemical Ind. Co., Ltd. filed Critical Daehan Chemical Ind. Co., Ltd.
Publication of WO1997048576A1 publication Critical patent/WO1997048576A1/fr

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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is 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
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/20—Making multilayered or multicoloured articles
    • B29C43/203—Making multilayered articles
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • 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
    • 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
    • B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/105—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles for motor cars
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/022—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having locally depressed lines, e.g. hinges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/023—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3613—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons applying pressure locally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3041—Trim panels
    • 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
    • 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
    • B32B2605/00—Vehicles
    • 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

Definitions

  • This invention relates to a multilayered insulation sheet, and in
  • Insulation sheets are attached on proper parts of automobiles.
  • insulation sheets are used to shut off or absorb the noises and
  • the known insulation sheets are disposed mainly on the floor panel
  • insulation sheets are used to prevent the noise and vibration generating
  • the known insulation sheets are generally composed of
  • One object of invention is to solve the above mentioned problems in
  • Another object of invention is to provide the insulation sheet which
  • hoods(3) which cover the engine room(2) of vehicle body(l ).
  • sheet(4) is comprising a foamed plastic layer(12), resin felt layers(ll)
  • said insulation sheet(4) is sectioned into the high density region(5)
  • cover sheet( l ⁇ ) which covers the surfaces of said resin felt layers(ll),
  • Fig. 1 is a view showing an exemplary use of the embodiment of the
  • Fig. 2 is a perspective view of said embodiment.
  • Fig. 3 is a sectional view according to line A- A of Fig. 2.
  • sheet(4) may be attached to the inner surface of engine hood(3) by
  • This insulation sheet(4) is made of soft and porous multilayer
  • layer(12) such as polyurethane sponge is disposed in the middle part of
  • non- woven fabric layers( l ⁇ ) are disposed on the outer surface of resin
  • the non- woven fabric layers(l ⁇ ) may be
  • insulation sheets(4) may be formed in conformity with the
  • multilayer sheets made of soft and porous materials are relatively low in
  • insulation sheets comprising soft and porous materials and being

Abstract

L'invention porte sur un panneau isolant multicouche pouvant efficacement réduire le niveau de bruit dans les espaces intérieurs et extérieurs d'un véhicule. Ledit panneau comporte une couche de plastique expansé (12), des couches de feutre de résine (11) placées de part et d'autre de la couche de plastique expansé (12), et une feuille de couverture (10) recouvrant chacune des couches de feutre de résine (11). Le panneau (4), qui est découpé dans des zones (5) formées par compression sous des pressions relativement élevées, comporte au moins les surfaces marginales du panneau et les zones à faible densité (6) comprimées sous des pressions relativement faibles, ainsi que les zones restantes à l'exception des zones à haute densité (5).
PCT/KR1997/000118 1996-06-21 1997-06-20 Panneau isolant multicouche WO1997048576A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR19960022837 1996-06-21
KR1996/22837 1996-06-21

Publications (1)

Publication Number Publication Date
WO1997048576A1 true WO1997048576A1 (fr) 1997-12-24

Family

ID=19462811

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1997/000118 WO1997048576A1 (fr) 1996-06-21 1997-06-20 Panneau isolant multicouche

Country Status (2)

Country Link
KR (1) KR100235678B1 (fr)
WO (1) WO1997048576A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001038006A1 (fr) * 1999-11-23 2001-05-31 Sca Schucker Gmbh & Co. Procede et installation pour realiser un composant de carrosserie pourvu d'une couche de matiere isolante
WO2004067935A1 (fr) * 2003-01-27 2004-08-12 Rieter Technologies Ag Couche de division du compartiment moteur
WO2007000225A1 (fr) * 2005-06-24 2007-01-04 Röchling Automotive AG & Co. KG Procede de fabrication d'une piece de revetement ou de logement pour un vehicule
EP1873018A1 (fr) * 2006-06-28 2008-01-02 Polytec Automotive GmbH & Co. KG Composant insonorisant destiné au recouvrement de composants dans le compartiment moteur de véhicules
WO2013110573A1 (fr) * 2012-01-26 2013-08-01 Faurecia Automotive Industrie Piece d'equipement de vehicule automobile et vehicule automobile associe
EP2735439A1 (fr) * 2012-11-23 2014-05-28 Automotive Insulations Limited Procédé de production d'un composant d'isolation et composant d'isolation produit par le procédé
EP2962827A1 (fr) * 2014-07-03 2016-01-06 Global System International S.p.A. Procédé et appareil pour le moulage de composants pour véhicules
CN111186188A (zh) * 2020-01-19 2020-05-22 东风汽车集团有限公司 一种汽车发动机舱的吸音隔热垫
EP3118848B1 (fr) * 2015-07-17 2021-06-02 Mecaer Aviation Group S.p.A. Panneau multicouche pour insonoriser des intérieurs d'aéronef

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100615667B1 (ko) * 2004-11-26 2006-08-25 주식회사 서린건축사사무소 날개형 고정부재를 이용한 건축외장재 고정장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646864A (en) * 1985-10-07 1987-03-03 Chrysler Motors Corporation Integral silencer pad and water deflector
DE3601204A1 (de) * 1986-01-17 1987-07-23 Daimler Benz Ag Geraeuschdaemmende verkleidung fuer den motorraum von kraftfahrzeugen
DE3903471A1 (de) * 1988-02-17 1989-08-31 H P Chemie Pelzer Res & Dev Formteil, insbesondere zum einbau in kfz.
DE4019121A1 (de) * 1989-06-13 1991-01-10 Suzuki Motor Co Halterungsmechanismus fuer (motor)haubenisolator
DE4211409A1 (de) * 1992-04-04 1993-10-07 Daimler Benz Ag Selbsttragende, wärme- und schalldämmende Verkleidung für Verbrennungsmotoren von Kraftfahrzeugen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256981Y2 (fr) * 1974-09-20 1977-12-23

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646864A (en) * 1985-10-07 1987-03-03 Chrysler Motors Corporation Integral silencer pad and water deflector
DE3601204A1 (de) * 1986-01-17 1987-07-23 Daimler Benz Ag Geraeuschdaemmende verkleidung fuer den motorraum von kraftfahrzeugen
DE3903471A1 (de) * 1988-02-17 1989-08-31 H P Chemie Pelzer Res & Dev Formteil, insbesondere zum einbau in kfz.
DE4019121A1 (de) * 1989-06-13 1991-01-10 Suzuki Motor Co Halterungsmechanismus fuer (motor)haubenisolator
DE4211409A1 (de) * 1992-04-04 1993-10-07 Daimler Benz Ag Selbsttragende, wärme- und schalldämmende Verkleidung für Verbrennungsmotoren von Kraftfahrzeugen

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001038006A1 (fr) * 1999-11-23 2001-05-31 Sca Schucker Gmbh & Co. Procede et installation pour realiser un composant de carrosserie pourvu d'une couche de matiere isolante
WO2004067935A1 (fr) * 2003-01-27 2004-08-12 Rieter Technologies Ag Couche de division du compartiment moteur
WO2007000225A1 (fr) * 2005-06-24 2007-01-04 Röchling Automotive AG & Co. KG Procede de fabrication d'une piece de revetement ou de logement pour un vehicule
EP1873018A1 (fr) * 2006-06-28 2008-01-02 Polytec Automotive GmbH & Co. KG Composant insonorisant destiné au recouvrement de composants dans le compartiment moteur de véhicules
WO2013110573A1 (fr) * 2012-01-26 2013-08-01 Faurecia Automotive Industrie Piece d'equipement de vehicule automobile et vehicule automobile associe
FR2986207A1 (fr) * 2012-01-26 2013-08-02 Faurecia Automotive Ind Piece d'equipement de vehicule automobile et vehicule automobile associe
US9637068B2 (en) 2012-01-26 2017-05-02 Faurecia Automotive Industrie Component for a motor vehicle and associated motor vehicle
EP2735439A1 (fr) * 2012-11-23 2014-05-28 Automotive Insulations Limited Procédé de production d'un composant d'isolation et composant d'isolation produit par le procédé
EP2962827A1 (fr) * 2014-07-03 2016-01-06 Global System International S.p.A. Procédé et appareil pour le moulage de composants pour véhicules
EP3513941A3 (fr) * 2014-07-03 2019-10-02 TWICE PS S.p.A. Composant pour véhicules
EP3118848B1 (fr) * 2015-07-17 2021-06-02 Mecaer Aviation Group S.p.A. Panneau multicouche pour insonoriser des intérieurs d'aéronef
CN111186188A (zh) * 2020-01-19 2020-05-22 东风汽车集团有限公司 一种汽车发动机舱的吸音隔热垫

Also Published As

Publication number Publication date
KR100235678B1 (ko) 1999-12-15
KR970065332A (ko) 1997-10-13

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