WO2001064478A2 - Airbagschutzhülle - Google Patents
Airbagschutzhülle Download PDFInfo
- Publication number
- WO2001064478A2 WO2001064478A2 PCT/EP2001/000725 EP0100725W WO0164478A2 WO 2001064478 A2 WO2001064478 A2 WO 2001064478A2 EP 0100725 W EP0100725 W EP 0100725W WO 0164478 A2 WO0164478 A2 WO 0164478A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protective cover
- dtex
- titer
- filaments
- continuous filaments
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/235—Inflatable members characterised by their material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/201—Packaging straps or envelopes for inflatable members
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- 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
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
-
- 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
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
- D04H3/011—Polyesters
-
- 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
- D04H3/10—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
Definitions
- the invention relates to an airbag protective cover, consisting of a microfilament nonwoven fabric with basis weights of 50 to 200 g / m 2
- a cover for an airbag which consists of a polyethylene fiber fleece.
- Such covers or restraint systems are intended on the one hand to protect the airbag from dirt and damage and on the other hand they are not intended to hinder the deployment of the airbag in an accident situation but rather even support a preferred deployment characteristic.
- the airbag cover should be printable with 20 warnings.
- the automotive industry is therefore demanding a material from the supplier industry that has high strengths and low elongation values with a comparatively low tear resistance.
- the material should be easy to print and meet the requirements in terms of Flame retardant properties correspond in particular to the " > ** • material used for the manufacture of airbag protective covers should have very tightly tolerated tear and tear propagation resistance he constant temperature resistance, that
- the invention has for its object to provide an airbag protective cover and a method for its manufacture, which meets the requirements mentioned
- an airbag protective cover which consists of a microfilament plastic with a basis weight of 50 to 200 g / m 2 , the nonwoven fabric being melt-spun, stretched and immediately deposited into a nonwoven multicomponent continuous filament with a titer of 1. 5 to 5 dtex and the multi-component
- IO continuous filaments if necessary after pre-consolidation, at least 80% are split and consolidated into micro-continuous filaments with a titer of 0.1 to 1.2 dtex.
- the isotropic thread distribution in the nonwoven fabric does not require hemming and observing the machine direction.
- the endless filaments indicate the airbag protective cover no fraying on it ⁇ -> the airbag protective cover according to the invention has a very good muscle recovery potential of> 120 ° and has a very good seam and thread slip resistance of 200 N, measured according to the BS 3320 standard
- the airbag protective cover is one which is produced from a combination of polyester and copolyester. This combination allows the copolyester to act as a binding component during calendering - smooth or dot - and thus to produce high strengths with very good oil-free smoothness
- the airbag protective cover is preferably one in which the nonwoven fabric with basis weights of 60 to 120 g / m 2 consists of melt-spun, aerodynamically stretched, multicomponent filaments with a titer of 1.5 to 3 dtex, which are immediately deposited to form a fleece, and the multicomponent Continuous filaments are at least 80% split and consolidated into micro or endios filaments with a titer of 0.1 to 0.3 dtex.
- the airbag protective cover has an isotropic filament distribution in the fleece It is therefore not necessary to take the machine direction into account when cutting. Furthermore, the material has no protruding fibers and therefore no tendency to pilling. It also has a high resistance to abrasion and is weldable, adhesive and sewable. At a
- 5 filament diameters of approx. 3 ⁇ m means a filament length of approx. 10,000 km when using a material with a basis weight of 100 g / m 2 . This ensures a barrier effect for particles> 3 ⁇ m, ie, the penetrating dusts are of such a fineness that they do not cause any frictional damage to the airbag and thus safety defects
- the airbag protective cover is preferably one in which the multicomponent continuous filament is a bicomponent continuous filament composed of two incompatible polymers, such as a polyester and a polyamide.
- a continuous bicomponent filament has good cleavability in micro continuous filaments and brings about a favorable ratio of strength to basis weight and a smooth surface which allows comparatively good printability.
- the airbag protective cover is preferably one in which the multicomponent continuous filaments have a cross section with an orange-like or also called “pie” structure, the segments alternately each containing one of the two incompatible polymers.
- a "side-by-side" (s / s) segment arrangement of the incompatible polymers in the multi-component continuous filament is also possible, which is preferably used to produce crimped filaments.
- Such segment arrangements of the incompatible polymers in the multicomponent continuous filament have proven to be very easy to split.
- the airbag protective cover has a high strength, a low stretch, a high dimensional stability and above all a very defined tear resistance, which in connection with the Imprinting of tear lines an adjustable deployment of the airbag takes place with a predetermined force.
- the polymer combination polyester and polyamide has a melting point of> 250 ° C and can therefore be used advantageously at permanent temperatures above 105 ° C without losing its mechanical properties.
- the further airbag protective cover is preferably one in which at least one of the incompatible polymers forming the multicomponent continuous filament contains an additive, such as color pigments, permanently acting antistatic agents, flame retardants and / or additives which influence the hydrophobic properties in amounts of up to 10% by weight. If polyesters and copolyesters are used, the additives flame retardants can even be reduced or avoided, since these also meet the automotive fire requirements of the MVSS302 without these additives.
- an additive such as color pigments, permanently acting antistatic agents, flame retardants and / or additives which influence the hydrophobic properties in amounts of up to 10% by weight. If polyesters and copolyesters are used, the additives flame retardants can even be reduced or avoided, since these also meet the automotive fire requirements of the MVSS302 without these additives.
- the method according to the invention for producing an airbag protective cover consists in spinning, stretching and laying multi-component continuous filaments out of the melt and depositing them immediately into a nonwoven fabric, pre-consolidation and solidification by high-pressure fluid jets as in micro continuous filaments with a titer of 0 , 1 to 1, 2 dtex is split.
- the material obtained in this way is very uniform in terms of its thickness, it has an isotropic thread distribution, has no tendency to delaminate and is distinguished by high modulus values.
- the method for producing the airbag protective cover is advantageously carried out in such a way that the solidification and splitting of the multicomponent continuous filaments takes place in that the optionally pre-consolidated nonwoven fabric is subjected to high-pressure water jets at least once on each side.
- the airbag protective cover therefore has one good surface and a degree of splitting of the multicomponent filaments> 80%.
- the airbag protective cover according to the invention is advantageously subjected to a point calendering in order to increase its strength and abrasion resistance.
- the split and solidified nonwoven is passed through heated rollers, of which at least one roller has elevations which lead to a selective fusing of the filaments with one another.
- the airbag protective cover according to the invention can also be subjected to a smooth calendering to increase the strength and abrasion resistance.
- the split and consolidated nonwoven is passed through heated rollers.
- a 16 segment (pie) polyester-polyamide 6.6 (PES-PA6.6) bicomponent continuous filament with a titer of 1.8 dtex and a weight ratio of PES / PA6.6 of 70/30 becomes a filament pile with a basis weight of 1 16 g / m 2 generated and subjected to water jet needling with pressures up to 230 bar on both sides.
- the bicomponent continuous filaments have a titer of 0.1 dtex after the water jet needling, which leads to simultaneous splitting of the starting filaments, and a thickness of 0.50 mm after a final smoothing.
- the tensile strength in the machine direction was 383 N and 324 N in the transverse direction.
- a 16 segment (pie) polyester-polyamide 6.6 (PES-PA6.6) bicomponent continuous filament with a titer of 2.1 dtex and a weight ratio of PES / PA6.6 of 60/40 becomes a filament pile with a basis weight of 68 g / m 2 generated and subjected to water jet needling with pressures up to 230 bar on both sides.
- the bicomponent filaments have a titer of 0.1 dtex after water jet needling, which leads to simultaneous splitting of the starting filaments, and a thickness of 0.39 mm after a final smoothing.
- the tensile strength in the machine direction was determined to be 200 N and 181 N in the transverse direction.
- a filament pile is made from a 16 segment (pie) polyethylene terephthalate-co-polyethylene terephthalate (PET-coPET) bicomponent continuous filament with a titer of 1.9 dtex and a weight ratio of PET-coPET of 70/30 a basis weight of 97 g / m 2 and subjected to smooth calendering to produce a smooth surface with a paper-like structure.
- PET-coPET polyethylene terephthalate-co-polyethylene terephthalate
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Air Bags (AREA)
- Multicomponent Fibers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001228483A AU2001228483A1 (en) | 2000-02-28 | 2001-01-24 | Airbag-protecting shell |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000109283 DE10009283C2 (de) | 2000-02-28 | 2000-02-28 | Airbagschutzhülle |
DE10009283.7 | 2000-02-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001064478A2 true WO2001064478A2 (de) | 2001-09-07 |
WO2001064478A3 WO2001064478A3 (de) | 2002-01-24 |
Family
ID=7632660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/000725 WO2001064478A2 (de) | 2000-02-28 | 2001-01-24 | Airbagschutzhülle |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2001228483A1 (de) |
DE (1) | DE10009283C2 (de) |
WO (1) | WO2001064478A2 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1285820A1 (de) * | 2001-08-09 | 2003-02-26 | Firma Carl Freudenberg | Airbagschutzhülle |
EP1213194A3 (de) * | 2000-12-09 | 2004-01-28 | Johns Manville Europe GmbH | Hülle für Seitenairbags |
EP1619283A1 (de) * | 2004-07-24 | 2006-01-25 | Carl Freudenberg KG | Mehrkomponenten-Spinnvliesstoff, Verfahren zu seiner Herstellung sowie Verwendung der Mehrkomponenten-Spinnvliesstoffe |
US7065844B2 (en) * | 2002-11-06 | 2006-06-27 | Johns Manville | Airbag cover |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE395223T1 (de) * | 2003-10-22 | 2008-05-15 | Advanced Label Technologies B | Verfahren zum herstellen einer hülle für einen airbag |
DE102016010163A1 (de) | 2016-08-25 | 2018-03-01 | Carl Freudenberg Kg | Technisches Verpackungsmaterial |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19536603A1 (de) | 1995-09-30 | 1997-04-03 | Bayerische Motoren Werke Ag | Rückhalteeinrichtung mit einem Luftsack |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04228648A (ja) * | 1990-12-27 | 1992-08-18 | Bridgestone Corp | エアバッグ |
DE9101099U1 (de) * | 1991-01-31 | 1992-06-04 | Autoliv-Kolb GmbH & Co, 8060 Dachau | Airbag |
TW246699B (de) * | 1992-10-05 | 1995-05-01 | Unitika Ltd | |
FR2749860B1 (fr) * | 1996-06-17 | 1998-08-28 | Freudenberg Spunweb Sa | Nappe non tissee formee de filaments continus tres fins |
US5970583A (en) * | 1997-06-17 | 1999-10-26 | Firma Carl Freudenberg | Nonwoven lap formed of very fine continuous filaments |
-
2000
- 2000-02-28 DE DE2000109283 patent/DE10009283C2/de not_active Expired - Fee Related
-
2001
- 2001-01-24 WO PCT/EP2001/000725 patent/WO2001064478A2/de active Application Filing
- 2001-01-24 AU AU2001228483A patent/AU2001228483A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19536603A1 (de) | 1995-09-30 | 1997-04-03 | Bayerische Motoren Werke Ag | Rückhalteeinrichtung mit einem Luftsack |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1213194A3 (de) * | 2000-12-09 | 2004-01-28 | Johns Manville Europe GmbH | Hülle für Seitenairbags |
EP1285820A1 (de) * | 2001-08-09 | 2003-02-26 | Firma Carl Freudenberg | Airbagschutzhülle |
US7065844B2 (en) * | 2002-11-06 | 2006-06-27 | Johns Manville | Airbag cover |
EP1619283A1 (de) * | 2004-07-24 | 2006-01-25 | Carl Freudenberg KG | Mehrkomponenten-Spinnvliesstoff, Verfahren zu seiner Herstellung sowie Verwendung der Mehrkomponenten-Spinnvliesstoffe |
US8021997B2 (en) | 2004-07-24 | 2011-09-20 | Carl Freudenberg Kg | Multicomponent spunbonded nonwoven, method for its manufacture, and use of the multicomponent spunbonded nonwovens |
Also Published As
Publication number | Publication date |
---|---|
DE10009283A1 (de) | 2001-09-13 |
WO2001064478A3 (de) | 2002-01-24 |
DE10009283C2 (de) | 2002-02-21 |
AU2001228483A1 (en) | 2001-09-12 |
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