FR3074748B1 - METHOD FOR PRODUCING A SOUNDPROOFING SCREEN FOR A MOTOR VEHICLE - Google Patents
METHOD FOR PRODUCING A SOUNDPROOFING SCREEN FOR A MOTOR VEHICLE Download PDFInfo
- Publication number
- FR3074748B1 FR3074748B1 FR1762097A FR1762097A FR3074748B1 FR 3074748 B1 FR3074748 B1 FR 3074748B1 FR 1762097 A FR1762097 A FR 1762097A FR 1762097 A FR1762097 A FR 1762097A FR 3074748 B1 FR3074748 B1 FR 3074748B1
- Authority
- FR
- France
- Prior art keywords
- foam
- shell
- face
- producing
- motor vehicle
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000006260 foam Substances 0.000 abstract 6
- 238000000034 method Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
Classifications
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1261—Avoiding impregnation of a preformed part
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
-
- 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
- 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
- B32B5/20—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 foamed in situ
-
- 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
- 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
- B32B5/32—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 at least two layers being foamed and next to each other
-
- 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
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- 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
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- 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
- B32B2307/718—Weight, e.g. weight per square meter
-
- 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
- B32B2307/72—Density
-
- 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
Abstract
L'invention concerne un procédé comprenant les étapes suivantes : prévoir une coque (2) d'absorption acoustique à base matériau poreux ; mettre en place ladite coque dans un moule (8), une face (3) de ladite coque étant tournée vers la cavité de moulage (9) dudit moule ; injecter dans ladite cavité un mélange (4) précurseur de mousse élastiquement compressible, de manière à réaliser une couche de ressort (5) en mousse surmoulant ladite face ; après expansion de la mousse, démouler ledit écran obtenu, ledit procédé prévoyant en outre de disposer sur ladite face, avant l'injection dudit mélange, un film (6) présentant une épaisseur et des propriétés physicochimiques agencées de sorte qu'il se dégrade progressivement lors de la formation de ladite mousse, afin de retarder la mise en contact entre ladite mousse et ladite coque et conduire à un surmoulage où la fraction d'épaisseur de ladite coque pénétrée par ladite mousse est minimisée.The invention relates to a method comprising the following steps: providing a sound absorption shell (2) based on porous material; placing said shell in a mold (8), one face (3) of said shell facing the molding cavity (9) of said mold; injecting into said cavity a mixture (4) of precursor of elastically compressible foam, so as to produce a layer of spring (5) of foam overmolding said face; after expansion of the foam, demold said screen obtained, said method also providing for having on said face, before injection of said mixture, a film (6) having a thickness and physicochemical properties arranged so that it gradually degrades during the formation of said foam, in order to delay the contact between said foam and said shell and lead to an overmolding where the fraction of thickness of said shell penetrated by said foam is minimized.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1762097A FR3074748B1 (en) | 2017-12-13 | 2017-12-13 | METHOD FOR PRODUCING A SOUNDPROOFING SCREEN FOR A MOTOR VEHICLE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1762097A FR3074748B1 (en) | 2017-12-13 | 2017-12-13 | METHOD FOR PRODUCING A SOUNDPROOFING SCREEN FOR A MOTOR VEHICLE |
FR1762097 | 2017-12-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR3074748A1 FR3074748A1 (en) | 2019-06-14 |
FR3074748B1 true FR3074748B1 (en) | 2020-04-10 |
Family
ID=61132708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1762097A Active FR3074748B1 (en) | 2017-12-13 | 2017-12-13 | METHOD FOR PRODUCING A SOUNDPROOFING SCREEN FOR A MOTOR VEHICLE |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR3074748B1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2663880B1 (en) * | 1990-06-29 | 1994-04-29 | Roth Sa Freres | PROCESS FOR THE MANUFACTURE OF POLYURETHANE FOAM MATTRESSES MOLDED IN SITU IN A TEXTILE HEADBAND AND CUSHION THUS OBTAINED. |
DE102004027079B4 (en) * | 2004-06-02 | 2006-09-21 | W.E.T. Automotive Systems Ag | Electrically heatable molded foam element, in particular seat element of a vehicle interior and method for its production |
FR2912100B1 (en) * | 2007-02-06 | 2009-05-08 | Cera | ACOUSTIC PROTECTION PANEL FOR MOTOR VEHICLE COMPRISING AN IMPREGNATED SEAL LAYER |
FR3010958B1 (en) * | 2013-09-26 | 2017-04-14 | Centre D'etude Et De Rech Pour L'automobile (Cera) | ACOUSTIC PROTECTION SCREEN FOR MOTOR VEHICLE |
-
2017
- 2017-12-13 FR FR1762097A patent/FR3074748B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR3074748A1 (en) | 2019-06-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PLSC | Publication of the preliminary search report |
Effective date: 20190614 |
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PLFP | Fee payment |
Year of fee payment: 3 |
|
TP | Transmission of property |
Owner name: TREVES PRODUCTS, SERVICES & INNOVATION, FR Effective date: 20200221 |
|
PLFP | Fee payment |
Year of fee payment: 4 |
|
PLFP | Fee payment |
Year of fee payment: 5 |
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PLFP | Fee payment |
Year of fee payment: 6 |
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PLFP | Fee payment |
Year of fee payment: 7 |