CA2401442C - Sound absorbing material - Google Patents

Sound absorbing material Download PDF

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Publication number
CA2401442C
CA2401442C CA002401442A CA2401442A CA2401442C CA 2401442 C CA2401442 C CA 2401442C CA 002401442 A CA002401442 A CA 002401442A CA 2401442 A CA2401442 A CA 2401442A CA 2401442 C CA2401442 C CA 2401442C
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CA
Canada
Prior art keywords
sound absorbing
absorbing material
range
dtex
filaments
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 - Lifetime
Application number
CA002401442A
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French (fr)
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CA2401442A1 (en
Inventor
Ararad Emirze
Robert Groten
Matthias Schuster
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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Filing date
Publication date
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of CA2401442A1 publication Critical patent/CA2401442A1/en
Application granted granted Critical
Publication of CA2401442C publication Critical patent/CA2401442C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/016—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y10T442/615—Strand or fiber material is blended with another chemically different microfiber in the same layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y10T442/625—Autogenously bonded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y10T442/626—Microfiber is synthetic polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Nonwoven Fabrics (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

The invention relates to a sound absorbing material, made from a microfilament non-woven fabric with a mass per unit surface area of 40 to 300 g/m2, whereby a non-woven fabric made from a melt-spun and drawn multi-component endless filament with a titre of 1.5 to 5 dtex is directly bonded to form a web and the multi-component endless filaments are optionally spread with and fixed to micro-endless filaments with a titre of 0.1 - 1.2 dtex, up to a degree of 80 % by means of a prefixing process.

Description

SOUND ABSORBING MATERIAL
Description The invention relates to a sound absorbing material, consisting of a microfilament nonwoven with surface weights of 40-300g/m2.

Interior finish parts for automotive vehicles such as vehicle roofs are known from documents EP 0 909 680 and US 4,851,283, which have sound absorbing properties. They consist of a staple fibre nonwoven layer in which preferably polyester fibres are consolidated with the help of binder fibres and are coated with at least one foam layer.

Damping and sound protecting materials are also known from documents DE 197 26 and DE 197 08 188, which consist of staple fibre nonwovens, especially of polyester fibres and are consolidated by mechanical as well a thermal processes.

In the course of the increasing demands of the automotive industry, new requirements are imposed on the supplier. Thus, the lining parts used in the interior of a motor vehicle should have a decor with attractive optic and haptic. The parts should be recyclable, should have a very high color consistency and light resistance, especially hot light resistance, a low tendency to soiling, a high abrasion resistance, humidity resistance, flame resistance, cleanability and very good deep drawing ability, and furthermore accommodate the growing requirements for sound protection with the goal of increased comfort for the motor vehicle passengers.

It is an object of the invention to provide a sound absorbing material which accommodates the mentioned requirements and a process for its manufacture.

This object is achieved in accordance with the invention with a sound absorbing material, which consists of a microfilament nonwoven with surface weights of 40-300 g/m2, whereby the nonwoven is made of meltspun, drawn multicomponent endless filaments with a titre of 0.15-5dtex which are immediately laid into a nonwoven web, is split, preferably after a preconsolidation, at least to 80% into micro endless filaments with a titre of 0.1-1.2dtex, and is consolidated. The sound absorbing material has a high specific fibre surface at a comparatively low surface weight and a high opacity. The fineness of the filaments allows a good printability and embossability and therefore a good decoration of the material.

The sound absorbing material is preferably one wherein the nonwoven is made of meltspun, aerodynamically drawn multicomponent endless filaments with a titre of 1.5-3dtex, which multicomponent endless filaments are immediately laid into a nonwoven web and split to at least 80% into micro endless filaments with a titre of 0.1-0.3dtex, and consolidated. The sound absorbing material has an isotropic filament distribution in the nonwoven web, whereby the further processing is rendered relatively independent from the machine direction and is thereby very advantageous for the utilization of the material.

Preferably, the sound absorbing material is one wherein the multicomponent endless filament is a bicomponent endless filament of two incompatible polymers, especially a polyester and a polyamide. Such a bicomponent endless filament has a good splittability into micro endless filaments and results in an advantageous ratio of strength to surface weight.
At the same time, the sound absorbing material in accordance with the invention can be easily cleaned and wiped off and has a high abrasion resistance because of the polymers used and their filament structure, which means it is easy-care.

Preferably, the sound absorbing material is one wherein the multicomponent endless filaments have a cross-section with a multi-segment structure called orange type or also "pie", whereby the segments altematingly include respectively one of the two incompatible polymers.
Besides this orange-type multi-segment structure of the multicomponent endless filaments, a "side-by-side" (s/s) segment positioning of the incompatible polymers in the multicomponent endless filament is also possible, which is preferably used for the generation of curled filaments. Such segment arrangements of the incompatible polymers in the multicomponent endless filament have shown to be very well splittable. The sound absorbing material has a good deep drawing ability or deformability, which is manifested in the mid-range strength values at a high stretchability and comparatively low module values.

Preferably, the sound absorbing material is one in which at least one of the incompatible polymers forming the multicomponent endless filament includes an additive in an amount up to 10%
per weight, such as color pigments, permanently active anti-statics, flame protection agents and/or additives which influence the hydrophobic properties. Static charges can be prevented or reduced with these additives and the hot light resistance improved. Hot light consistencies of >6, determined according to DIN EN 20105-A02 were achieved with subsequently colored products.

The process in accordance with the invention for the manufacture of a sound absorbing material consists in that multicomponent endless filaments are spun from the melt, drawn and immediately layed into a nonwoven web, a preconsolidation is carried out, and the nonwoven is consolidated by high pressure fluid jets with the simultaneous splitting into micro endless filaments with a titre of 0.1-1.2dtex. The sound absorbing material obtained has a very even thickness, an isotropic tread distribution and low tendency to delamination.

Preferably, the process for the manufacture of the sound absorbing material is carried out in such a way that the consolidation and splitting of the multicomponent endless filaments is achieved in that the possibly preconsolidated nonwoven is impacted at least once on each side with high pressure water jets. The sound absorbing material thereby has a good surface and a degree of splitting of the multicomponent endless filaments >80%.

Preferably, the sound absorbing material in accordance with the invention is also subjected to a point calendaring, to increase the abrasion resistance. The split and consolidated nonwoven is therefore fed through heated rollers of which at least one roller has protrusions which lead to a point form melting together of the filaments.

The sound absorbing material in accordance with the invention is suitable for the manufacture of motor vehicle roof linings, door linings, column linings, hat rests andlor trunk linings as well as wheel well linings, because of its properties such as good printability, high abrasion resistance and a good hot light resistance, thermal formability in deep drawn processes and the haptic shape. When a very high weight savings is to be achieved, one can also omit an additional foam covering, without suffering large losses in sound absorption properties.

The sound absorbing material is suitable as sound absorption layer in the construction of roof linings, in the construction of column, door and trunk linings, in the construction of dashboards, in the region of the engine compartment and/or the floor lining, whereby it has good sound absorption values at lower surface weights compared to known materials.

The sound absorbing material is especially suited as tuft can-ier for motor vehicle carpets which at a significantly lower material use has at least the same sound absorption properties as conventional motor vehicle carpets, since one can do away with heavy carpet backing layers.
Example 1 A filament web with a surface weight of 138 g/m2 is produced from a side by side (s/s) polyester-polyamide 6.6 (PES-PA 6.6) bicomponent endless filament with a titre of 2.3 dtex and a weight ratio of PES/PA 6.6 of 60/40, and subjected to a waterjet needling on both sides and at pressures of 230 bar. The bicomponent endless filaments after the waterjet needling, which leads to a simultaneous splitting of the starting filaments, had a titre of <1.2dtex and a thickness of 0.73mm.
A tear resistance in machine direction of 391N and in transverse direction of 372N was determined.
Example 2 A filament web with a surface weight of 115g/m2 was produced from a 16 segment (pie) polyester-polyamide 6.6 (PES-PA 6.6) bicomponent endless filament with a titre of 2.4dtex and a weight ratio of PES/PA 6.6 of 55/45, and subjected on both sides to a waterjet needling at pressures of 230 bar. The bicomponent endless filaments after the waterjet needling, which leads to simultaneous splitting of the starting filaments, had a titre of <0.15dtex and after a final smoothing a thickness of 0.48mm. A tear resistance in machine direction of 302N and in transverse direction of 303N was determined.

Comparative Example I

A commercially available single-layer needled nonwoven of polyester (motor vehicle sealing material) and about 1.1mm thick was used.
Comparative Example 2 A laminate made of a knitted fabric (about 0.6mm thick) and a foam base (about 1.6mm thick), which is typically used as motor vehicle sealing material, was tested.

Comparative Example 3 A laminate consisting of a knitted fabric (about 0.6mm thick) and a polyester needle nonwoven (about 1.9mm thick), which is typically used as motor vehicle sealing material, was tested.

Comparative Example 4 A laminate consisting of a knitted fabric (about 0.6mm thick), a foam intermediate layer (about 4.4mm thick) and a nonwoven base (about 0.3mm thick), which is typically used as motor vehicle roof lining material, was tested.

The results of the sound absorption properties (measured in a tube according to DIN 52215) at different frequencies are summarized in Table 1.

Ex. 500 625 800 900 1000 1120 1250 1400 1600 No. HZ HZ HZ HZ HZ HZ HZ HZ HZ
1 6% 12% 28% 33% 39% 46% 51% 70%
2 1% 8% 24% 34% 50% 74% 91% 95% 95%
CE1 1% 5% 10% 12% 14% 16% 21% 29%
CE2 2% 6% 11% 12% 14% 16% 10% 27%
CE3 5% 11% 20% 24% 28% 35% 38% 54%
CE4 5% 10% 20% 25% 30% 33% 34% 71% 76%

Claims (2)

CLAIMS:
1. Use of a microfilament nonwoven fabric having a basis weight in the range from 40 to 300 g/m2 and consisting of continuous multicomponent filaments having a linear density in the range from 1.5 to 5 dtex which are spun on the melt, stretched and directly laid down to form a web and optionally subjected to a preconsolidating operation before being at least 80% split into continuous microfilaments having a linear density in the range from 0.1 to 1.2 dtex and consolidated, as a sound absorption layer in the construction of roof liners, in the construction of column, door and boot linings, in the construction of dashboards, in the region of an engine compartment or floor lining.
2. Use of a microfilament nonwoven fabric having a basis weight in the range from 40 to 300 g/m2 and consisting of continuous multicomponent filaments having a linear density in the range from 1.5 to 5 dtex which are spun on the melt, stretched and directly laid down to form a web and optionally subjected to a preconsolidating operation before being at least 80% split into continuous microfilaments having a linear density in the range from 0.1 to 1.2 dtex and consolidated, as a tufting base for an automotive carpet.
CA002401442A 2000-02-28 2001-01-24 Sound absorbing material Expired - Lifetime CA2401442C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10009281A DE10009281C1 (en) 2000-02-28 2000-02-28 Sound-damping fleece especially suited for vehicle interior cladding, is made of fine melt-spun fibers, split to microfilaments following pre-solidification
DE10009281.0 2000-02-28
PCT/EP2001/000727 WO2001064991A2 (en) 2000-02-28 2001-01-24 Sound absorbing material

Publications (2)

Publication Number Publication Date
CA2401442A1 CA2401442A1 (en) 2001-09-07
CA2401442C true CA2401442C (en) 2009-09-01

Family

ID=7632658

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002401442A Expired - Lifetime CA2401442C (en) 2000-02-28 2001-01-24 Sound absorbing material

Country Status (9)

Country Link
US (1) US20030104749A1 (en)
EP (1) EP1261766B1 (en)
AR (1) AR027424A1 (en)
AU (1) AU2001228484A1 (en)
CA (1) CA2401442C (en)
DE (2) DE10009281C1 (en)
ES (1) ES2282273T3 (en)
TW (1) TW552578B (en)
WO (1) WO2001064991A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2835352B1 (en) * 2002-01-28 2004-08-27 Sofitec Sa SEALING AND SOUNDPROOFING PANEL IN PARTICULAR FOR A MOTOR VEHICLE
US20040231914A1 (en) * 2003-01-02 2004-11-25 3M Innovative Properties Company Low thickness sound absorptive multilayer composite
US7320739B2 (en) * 2003-01-02 2008-01-22 3M Innovative Properties Company Sound absorptive multilayer composite
US20040131836A1 (en) * 2003-01-02 2004-07-08 3M Innovative Properties Company Acoustic web
US6808786B2 (en) * 2003-02-04 2004-10-26 Freudenberg Nonwovens Automotive tufted carpet with enhanced acoustical properties
BRPI0507465A (en) * 2004-02-04 2007-07-10 Polymer Group Inc sound absorbing secondary non-woven carpet flooring
US7500541B2 (en) * 2004-09-30 2009-03-10 Kimberly-Clark Worldwide, Inc. Acoustic material with liquid repellency
GB0425124D0 (en) * 2004-11-13 2004-12-15 Don & Low Ltd Fabric
DE102007011665A1 (en) * 2007-03-09 2008-09-11 Btf Produktentwicklungs- Und Vertriebs-Gmbh Sound-deadening fleece used under cast floors, as intermediate layer or underlay, is highly-consolidated and has specified weight and sound attenuation properties
DE202009011197U1 (en) 2009-07-06 2009-10-29 Eswegee Vliesstoff Gmbh Sound absorption material
EP2573243B1 (en) 2011-09-20 2015-02-11 Firma Carl Freudenberg Non-woven material with a matrix containing elementary filaments
DE102011056933A1 (en) * 2011-12-22 2013-06-27 Bayerische Motoren Werke Aktiengesellschaft Interior component for a motor vehicle
CN105442189A (en) * 2015-12-29 2016-03-30 苏州鑫茂无纺材料有限公司 Method for preparing high-strength non-woven cloth
DE102017103943A1 (en) * 2017-02-24 2018-08-30 Auria Solutions Uk I Ltd. Covering part for a motor vehicle, method and apparatus for its production
CN106758905A (en) * 2017-02-24 2017-05-31 湖州浩森科技股份有限公司 A kind of removable automated cleaning sound insulation wall device
DE102017003411A1 (en) * 2017-04-07 2018-10-11 Carl Freudenberg Kg Thermally embossed nonwoven fabric and process for its production
EP3636819B1 (en) * 2017-06-08 2022-11-09 Kuraray Kuraflex Co., Ltd. Fiber structure, molded body and sound-absorbing material
US11541829B2 (en) 2020-06-18 2023-01-03 Freudenberg Performance Materials Lp Acoustical baffle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090397B1 (en) * 1982-03-31 1990-01-24 Toray Industries, Inc. Ultrafine fiber entangled sheet and method of producing the same
US4851283A (en) * 1988-12-05 1989-07-25 Monsanto Company Headliners having improved sound-absorbing characteristics
TW246699B (en) * 1992-10-05 1995-05-01 Unitika Ltd
FR2705698B1 (en) * 1993-04-22 1995-06-30 Freudenberg Spunweb Sa Method of manufacturing a nonwoven web consisting of continuous filaments bonded together and the web thus obtained.
FR2749860B1 (en) * 1996-06-17 1998-08-28 Freudenberg Spunweb Sa NON WOVEN TABLECLOTH FORMED OF VERY THIN CONTINUOUS FILAMENTS
US5965084A (en) * 1996-10-29 1999-10-12 Chisso Corporation Process for producing non-woven fabrics of ultrafine polyolefin fibers
US6200669B1 (en) * 1996-11-26 2001-03-13 Kimberly-Clark Worldwide, Inc. Entangled nonwoven fabrics and methods for forming the same
US5970583A (en) * 1997-06-17 1999-10-26 Firma Carl Freudenberg Nonwoven lap formed of very fine continuous filaments
DE19726965C1 (en) * 1997-06-25 1999-01-21 Sandler C H Gmbh Insulation material in the manner of a mass-spring system

Also Published As

Publication number Publication date
WO2001064991A2 (en) 2001-09-07
CA2401442A1 (en) 2001-09-07
EP1261766B1 (en) 2007-04-11
AR027424A1 (en) 2003-03-26
US20030104749A1 (en) 2003-06-05
WO2001064991A3 (en) 2001-12-13
TW552578B (en) 2003-09-11
DE10009281C1 (en) 2001-03-22
ES2282273T3 (en) 2007-10-16
AU2001228484A1 (en) 2001-09-12
EP1261766A2 (en) 2002-12-04
DE50112331D1 (en) 2007-05-24

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