CN1320090A - Low permeability airbag cushions having film coatings of extremely low thickness - Google Patents
Low permeability airbag cushions having film coatings of extremely low thickness Download PDFInfo
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- CN1320090A CN1320090A CN00801701A CN00801701A CN1320090A CN 1320090 A CN1320090 A CN 1320090A CN 00801701 A CN00801701 A CN 00801701A CN 00801701 A CN00801701 A CN 00801701A CN 1320090 A CN1320090 A CN 1320090A
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- 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
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- 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
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- 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
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/183—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials the layers are one next to the other
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/186—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials one of the layers is on one surface of the fibrous web and the other layer is on the other surface of the fibrous web
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- 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
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
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- 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
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- 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
- B32B2571/00—Protective equipment
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- 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
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- 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
- B60R2021/23504—Inflatable members characterised by their material characterised by material
- B60R2021/23509—Fabric
- B60R2021/23514—Fabric coated fabric
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- 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
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Air Bags (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Laminated Bodies (AREA)
- Woven Fabrics (AREA)
Abstract
Coated inflatable fabrics (26), more particularly airbags to which very low add-on amounts of coating have been applied, are provided which exhibit extremely low air permeabilities. The fabrics are primarily for use in automotive restraint cushions which require low permeability characteristics (such as side curtain airbags). The fabric utilizes an inexpensive, very thin coating to provide such necessary low permeability levels. Thus, the inventive coated airbag possesses a coating of at most 2.5 ounces per square yard, most preferably about 0.8 ounces per square yard, and exhibits a leak-down time of at least 7 seconds. All coatings, in particular elastomeric, nonsilicon coatings, and coated airbags, meeting these criteria are intended to reside within the scope of this invention.
Description
Invention field
The present invention relates to cated inflatable fabric, relate to airbag cushion specifically, scribble the additional coatings of hoot on it and show low especially permeability to air.Inflatable fabric of the present invention is mainly used in the automatic buffer pad (for example side window airbag) that needs low ventilating performance.Usually, weigh and expensive coating, for example the coating of compounds such as neoprene (diene) rubber, silicone resin has been used to provide this required low-permeable.Cheap, the extremely thin coating of fabric utilization of the present invention provides this essential low ventilative level.Therefore, the inflatable airbag of coating of the present invention comprises a film, overlaps at least a portion on target fabric surface, and wherein this film has at least 2,000 tensile strength and at least 180% elongation at break.The low-permeable airbag cushion that this film provides has returning of at least 5 seconds falls the time, and wherein lip-deep film amount is that every square yard of fabric has 2.5 ounces at the most.
Background technology
The automobile airbag is widely known by the people and has used the quite a long time.Air bag structure material commonly used is polyester or nylon fabrics, scribbles for example elastomeric layer such as neoprene (diene) rubber or silicone resin.The woven fabric that the fabric that uses in these airbags is normally made by synthetic strings by textile operation as known in the art.
Have found that the material of existing coating can receive, because it plays the barrier action that does not allow the inflation medium infiltration.The nitrogen that this inflation medium is normally produced by gas generator or charging blower.This gas is sent in the cushion with higher temperature.Coating stops the ventilative of fabrics by these hot gas, thereby cushion is inflated in the collision case process apace and is not had undue decompression.
Airbag can also be by forming the fabric that does not have coating that mode with low-permeable product is weaved, or the fabric that has reduced permeability to air through for example calender process constitutes.In U.S. Patent No. 4,921, the fabric (all quoting as a reference) that reduces permeability to air after woven by calendering or other mechanical treatments is disclosed in 735, No.4,977,016 and No.5,073,418 here.
It is reactive systems base or comprehensive two kinds of compositions that silicone coatings uses usually with the solvent.For the front and back sheet of side window airbag, the dry coating weight of silicone resin is all in about 3 to 4 ounces every square yard scope or bigger.Will be understood that as those of ordinary skill in the art high added weight improves the cost of airbag based fabric in fact, and be difficult to be packaged in the small air pockets module.In addition, silicone resin has low-down tensile strength and elongation at break characteristic, does not use very thick coating to be difficult to bear high-pressure aerated.
U.S. Patent No. 5 people such as Menzel, 110, disclose in 666 (here the quoting as a reference) specific polyurethane making coatings, it is reported the low added weight that allows be every square yard in 0.1 to 1 ounce scope, but this material itself is relatively costly, and because the characteristic of coating material is believed the mixing and the coating processing that need relative complex.But the patentee fails to disclose any relevant elasticity and/or the tensile strength characteristic of their concrete polyurethane coated materials.In addition, be not coated on the importance discussion of the ability (and relevant therewith low-permeable) on the side window air-bag fabric about this polyurethane with low added weight, this fabric is used in chaufeur or the passenger side cushion.All airbags must be able to be inflated very apace; In fact, in case sense collision, airbag reaches peak value air pressure usually in 10 to 20 milliseconds.Conventional driver side and passenger side airbag are designed to bear this huge inflation pressure; But in order to absorb the energy from car occupant collision airbag effectively, they are venting very apace also.Therefore this chaufeur and passenger side cushion (airbag) are made by the low-permeable fabric, but they are also exitted apace (coating that does not prevent escape of air herein) or exit apace by air bleed hole at the connection linear slit.In addition, the low additional amount coating that discloses in the patent of Menzel and in people's such as Li U.S. Patent No. 5,945,186 does not provide long-term gas confining force; In fact prolongation and the continuous pressure that surpasses about 2 seconds at the most that is provided by the charging blower after activating can not be provided for they.Therefore the low-permeable of these air-bag fabrics is very little to the gas confining force that the continues help in chaufeur and the passenger's airbag cushion, and the gas confining force is for preventing that collision fully has the needed effect that makes the cushion venting.These air-bag fabrics can not be worked well as the side window airbag, at least because form not coating of bolster connection linear slit shape, cushion shape structure (below will go through) in these airbags.Because it is quite serious that leak after the gas replenishment process neutralization in these zones, the low-permeable air-bag fabric of the above-mentioned low coating that patents can not correctly use in the side window airbag.
As mentioned above, the different airbags of three kinds of main kinds of existence, every kind all has different final uses.For example, the airbag of driver side is fixed in the steering-column tube usually, and shows higher permeability to air, is used for the cushion rubber of the chaufeur when conduct is subjected to impacting better.The airbag of passenger side also comprises higher airy fabric, to allow or to discharge gas by it or by the air bleed hole that is integrated in wherein.The airbag of all these types is designed to suddenly protecting the passenger in the collision, and (therefore has a plurality of " sides ") from steering-column tube or in the instrument carrier panel usually and explode out with the module that is packaged into.But; the side window airbag mainly has been designed to keep quite long time length by the inflated condition with it; open the packing container that comes in the collision of tumbling, to protect the passenger and within the side window along automobile is kept at the roof outline line, (also therefore only have rear side and front side) usually.Therefore the side window airbag not only has buffer action, but also prevents the injury of cullet and other fragments.Equally, essential a large amount of gas and the anticyclonic pressure very of keeping of side window airbag as mentioned above, thus in the long period of whole possible rollover conditions, keep inflated condition.For realizing this point, the front and back side of these side cushions all scribbles a large amount of leakproofing materials usually.Since most of side window air-bag fabrics comprise make, leak free or whole woven spool blanks woven together, the discontinuity zone of potential serious gas leakage exists very at large, specifically is positioned on the linear slit and on every side.What require to accept is to need thick and heavy coating so that the needed low-permeable of side window airbag (and resultant long returning fallen the time) to be provided as a kind of.Do not have this thick and heavy coating, these airbags will be very easy to exit apace, can not correctly work in the collision process of tumbling thus.It will be understood by those skilled in the art that this thick and heavy coating increased very big cost for the whole production of target side window airbag.Therefore there is very big demand to produce to have cheap coating the low-permeable side window airbag of (most preferably lower coating added weight), and in case when launching to use, can not damage needed aging, humidity of himself operation and permeability to air characteristic.So far, do not realize above-mentioned purpose substantially, if any just reduce demand from this thick and heavy airbag coating of side window airbag.
In addition, there is a kind of side window airbag to be kept at current driver in the module of cylindrical shape with this low-permeable.Because these airbags are generally held in the roof outline line of automobile, therefore available area is quite limited, always presses for the bare minimum that the packaging volume of the cushion of this compression is restricted to they.But, proved that the low-permeable side window airbag of putting into practice the front is difficult to be kept at this columniform container on the roof outline line that is arranged in object vehicle.The needed actual of low-permeable object and energy and the packaging volume of self that wind up this thick and heavy band coating be difficult to have been reduced.In addition, for the use of this thick and heavy coating, when these objects are very closely packaging together, the problem of locking (that is, the different piece with the band coating of cushion bonds together) has been increased.When having potential latch-up problem, the chance that postpones in the gas replenishment process to launch increases.Therefore, press for the side window low-permeable airbag of very close packing, that packaging volume is little, low locking.It's a pity that prior art is not given and this advantage of airbag industry again.
Summary of the invention
According to the foregoing background technology, seen the demand of existence to the side window airbag of low-permeable, this airbag uses less and cheap coating amount, therefore compares its packaging volume with the side window airbag of standard low-permeable type and reduces greatly.This cated low-permeable airbag must have required long returning to fall the time under the inflation and after long-time the preservation.The airbag of this novelty is compared with the airbag coating (with the airbag object that obtains) of the costliness of using in the past, high additional amount with novel coating agent has obvious improvement.
Therefore one object of the present invention is to provide a kind of cated airbag, and wherein this coating has low-down added weight, has long especially returning after the inflation and falls time response, and the auxiliary property that obtains thus is a low-permeable.Another object of the present invention provides a kind of cheap side window airbag cushion.A further object of the present invention provides a kind of coating agent of airbag efficiently, can use with low-down additives amount, to obtain the low especially air bag structure of inflation back permeability to air.Another object of the present invention provides a kind of airbag coating agent, and it not only provides useful and long low-permeable, also shows good long-time storage stability (by thermal ageing and humidity burn-in test).A further object of the present invention provides the low-permeable side window airbag in the roof outline line that is kept at automobile, has the low-down characteristic that winds up packaging volume and do not have locking for permanently effective preservation.
Therefore, the present invention relates to a kind of airbag cushion that comprises cated fabric, wherein film overlay is on said fabric, and wherein the said film amount on every square yard of fabric is at most 2.5 ounces; And wherein said airbag cushion shows distinctive time of at least 5 seconds and falls the time after preserving for a long time.Equally, the present invention relates to a kind of airbag cushion that comprises cated fabric, scribble multilayer film on the wherein said fabric, wherein said multilayer film have at least 2,000 tensile strength and at least 180% degree of stretching; And wherein said airbag cushion shows distinctive time of at least 5 seconds and falls the time after preserving for a long time.
Term " distinctive time fall the time " is meant when inflating with the constant pressure of 10psi afterwards again, inflate (the highest initial gas pressure that reaches " opening " weak sealing area) at one and the airbag cushion of exitting in the Measuring Time of the contained needs of the charge air conditioning of the entire quantity introduced.In airbag field (being particularly related to side window (low-permeable) airbag cushion), knowing already and be well understood that the long confining force of charge air conditioning was most important in collision process.The side window airbag is designed to equally with airbag passenger side inflate with driver side fastly, but they must exit very slowly, so as tumble and the process of side in protection people by bus.Therefore, in the process of continuous fast aeration, after airbag reached peak pressure, the leakage rate of this airbag must be very low.Therefore, the coating on the airbag must be enough solid to bear impact and the pressure when the such fast aeration of airbag.Therefore, for the gas that helps to form cushion of maximum quantity in the airbag after keeping inflating, long to fall time measurement peculiar time be very important.Therefore after the inflation airbag of (with reaching after the peak pressure) leaks with actual air pressure confining force characteristic closely related.Can fall time t by peculiar time and describe air pressure confining force characteristic (being referred to as " return and fall the time " later on) gas filed and the side window airbag of exitting, wherein:
* SCFH: standard cubic foot per hour
Be to be understood that constant 10psi is not a limitation of the present invention; Only be under this constant pressure, to measure back the time of falling.Therefore, even be higher or lower than this value in the gas replenishment process of reality or at the initial pressurization downstream pressure of airbag, only restriction is if those skilled in the art prepare to measure the airbag volume and obtain the time (by arriving with the takeoff of leaking with target airbag in the gas filed process of stabilized conditions under the 10psi) with the bag volume divided by the volume leakage rate.The time of outcome measurement will be at least 5 seconds.Preferably, this time is greater than about 9 seconds; More preferably, greater than about 15 seconds; And most preferably, greater than about 20 seconds.
In addition, do not have in the metering system of gas filed side window airbag in utilization, term " return fall the time " can be measured to be become after reaching initial peak pressure, and the charge air conditioning of introducing is discharged half needed time quantum from the target airbag.Therefore, (for example utilizing the standard modes of inflation, normally about 30psi) when inflating, reach the peak value initial pressure and begin this measurement afterwards immediately, this standard modes of inflation is continuously gas to be pumped in the target airbag after this in the process neutralization that reaches the peak value initial pressure.Will be understood that reaching the gaseous tension that is pushed in the airbag after the peak value initial pressure will not keep stable (it reduces) in the process of introducing charge air conditioning subsequently, and the target airbag will make the overflowing of charge air conditioning of some inevitably in this process.The main task of this side window airbag (as mentioned above) is to keep inflated condition as far as possible for a long time, thereby provides enough cushion rubber protections to the people who rides in the overthrow accident process.The quantity of the gas that retains is big more, and the cushion rubber effect that provides to the passenger is good more.Therefore, the time of the charge air conditioning that the airbag maintenance is a large amount of is long more, and it is long more that the time falls for distinctive time in the result, thereby the cushion rubber effect that realizes is good more.In any case airbag of the present invention must be after reaching the peak value initial pressure, kept 5 seconds to half of its gas volume that charges gas of major general.Preferably, this time is 9 seconds, more preferably 15 seconds, and most preferably 20 seconds.
Equally, term " after long-time the preservation " comprises the actual preservation in the inflator assemblies (module) of airbag cushion of the present invention in automobile, and/or waits for inflation in preservation equipment.This measurement for those of ordinary skills normally can accept, fine being appreciated and understood that, cross after representative type heat and humidity burn-in test and can be undertaken by comparative analysis.These tests are usually included in 107 ℃ of baking ovens aging 16 days, then wear out 16 days under 83 ℃ and 95% relative humidity, and generally believe that this is the correct estimation to the long preservation condition of airbag cushion.Therefore, this term comprises these experiment with measuring.Air-bag fabric of the present invention must be expressed correct distinctive time and fall the time after preserving test through the simulation of this strictness.
Coating of the present invention here is a film, must have at least 2, the tensile strength of 000psi and greater than about 180% elongation at break.Preferably, tensile strength is at least 3,000psi, and more preferably 6,000, and most preferably about at least 8,000 (upper limit is still the peak that can produce that can adhere on the fabric face basically).Preferred elongation at break is greater than about 200%, more preferably greater than about 300%, most preferably greater than about 600%.That these characteristics of film convert to is not only very solid (and bear thus in gas replenishment process and the immense pressure after the inflation and be not easy fracture) but also can extend the coating that compensates this huge inflation, pressure etc.Before contacting, the surface with target airbag cushion or fabric produces film.For coated this film, must be by film being heated simultaneously and hand is carried out lamination and handled.This lamination can adhere to any part on the object construction, although most preferably be coated on whole cushion or the fabric.Equally, the multilayer film that can have more than one on the target cushion, wherein on the most preferred specific zone of dispersion that adheres to the target cushion of one type film (having specific tensile strength and tensile properties), simultaneously can be on other positions (for example at the linear slit place) select to have the another kind of film of different qualities.Unique requirement is that final product shows returning of above-mentioned length and falls attribute.This film seems " to cement " on the position by the single yarn that will contact, and can prevent that the leakage of passing in woven yarn and/or the open area between the stitch from working.In gas replenishment process, this coating prevents to pass the leakage of the void space between yarn then, helps to prevent yarn skew (this will form the bigger space that can overflow gas).
The use of this high-tensile and high elongation at break parts makes that the added weight of this film of use was very low afterwards.Usually, the needed coating (be not film, but adhere to the coating agent of lip-deep reality, may form the non-layered film then) that is positioned on the side window airbag is very high, at least be 3.5 ounces every square yard (utilize this standard in fact higher, be approximately 4.0).About 2.7 ounces of every square yard of needed film coating of airbag cushion of the present invention (preferably every square yard is less than for example approximately 2.5, more preferably is about 2.2, still preferably less than 2.2 ounces).Ounce weight on the unit square sign indicating number coating of the present invention can form desirable length effectively and return drop characteristic (low-permeable).In addition, the coating in past requires to have excellent heat and humidity aging stability.Beyond thoughtly be, even this low additional amount particularly utilizes the problematic coating material that uses in the past (for example, polyurethane) time, coating of the present invention, and the airbag cushion of coating of the present invention subsequently show excellent thermal ageing and humidity aging characteristics.Therefore, in this concrete airbag field, the airbag of this coating composition and coating has obvious improvement.
Although the top any film of mentioning with same actv. tensile strength and elongation at break characteristic can use in low-permeable airbag cushion of the present invention, more interested be with polyurethane as desirable film.Give an example as just a kind of, the copolymer of polyurethane, polyamide etc. also can use.Equally, this film can cross coupled or non-cross coupled on the airbag surface.Preferably, this film is a polyurethane, most preferably be the polycarbonate polyurethane or with the polyurethane ethylene glycol be base polyurethane film (can be from Deerfield Urethane, Inc., Ivyland, PA obtains, commodity are called Durefiex
TMPT9400).This concrete film shows 8, the tensile strength of 000psi and about 600% elongation at break.This film can append on the desirable cushion with every square yard of 2.2 ounces of low like this quantity, and still can provide required long returning to fall time response.Certainly, any other film that meets top described characteristic can be included in the present invention; But, as required actual tensile strength and elongation at break, the added weight of other utilizable films can preferably be worth greater than this.But, should not exceed and satisfy the upper limit of the present invention 2.5 ounces every square yard.But if desired, only otherwise exceed the needed thickness of whole coating, just can add desirable film with a plurality of layers.In addition,, also can use a plurality of layers films/coatings system as long as use at least one film and show the low-permeable that needs with needed tensile strength and elongation at break.
Other can be in these films or the composition that occurs on the film be thickening agent, antioxidant, fire retardant, cementitious agent, adhesion promoter and colorant.According to potential preferred practice of the present invention, the priming paint adhering coating at first is coated on the target pad surface.In case after this ground floor drying, then by heating and pressurization with the film overlay of hope on the zone of the selection of target surface, form lamination through the sufficiently long time.Preferably, this preferred film (or a plurality of film) does not comprise any silicone resin because this bill of material reveal low-down tensile strength (be usually less than about 1,500psi) characteristic.But in order to provide actv. aging and non-locking advantage, some composition can be used as external coating and is coated on the film, as long as the added weight of whole film and external coating is no more than 2.5 ounces every square yard.In addition, because the stable problem during heat and humidity are aging (hydrolysis and polyethers are being pined for easy oxidation to polyester easily in a humid environment), so comprise that the artificial rubber of polyester or polyethers section or other analogous components is undesirable, particularly very low (that is 0.8-1.2oz/yd, of added weight
2) time; But this artificial rubber uses in the coating agent outside, as long as be no more than 2.5 ounces every square yard.
Other preferred additives in the film (or multilayer film) or on the film are heat stabilizer, fire retardant, priming paint adhesives and the material that is used for protecting external coating.Potential preferred thickener is that the registered trade mark (RTM) by the Aqualon ancillary firm production of HerculesCorporation is NATROSOL
TMThe product of 250HHXR is be sure of the said firm at Wilmington, and Delaware has and sells a little.In order to satisfy the requirement of FederalMotor Vehicle Safety Standard302, also preferably fire retardant is appended in the compound compound the fire retardant in the auto-industry.A kind of potential preferred fire retardant is the AMSPERSE F/R51 that is sold by AmspecChemical Corporation, be sure of that it has at Gloucester CityNew Jersey to sell a little.As mentioned above, can use the priming paint adhesives to promote bonding between the surface of target fabric and the film itself.Therefore, although the whole coating that preferably contacts with fabric face for film is the monoblock parts, can utilize adhesion promoter, for example isocyanate, epoxy resin, function silane and some other resin with adhesion property do not offer the needed low-permeable of target airbag cushion and can not influence film nocuously.External coating part is owing to have potential silicone resin above-mentioned, thereby also can be used for finishing the suitable non-latch-up characteristic of target airbag cushion.This external coating can be carried out various functions, includes but not limited to improve aging (for example the utilizing silicone resin) of film or provides the locking resistance based on the adhesion property (being to utilize preferred polyurethane polycarbonate the most significantly) of coating material.
In order to use in buffer system, air-bag fabric must pass through specific test.A kind of test like this is referred to as locking test, represent two ones of fabric of coating in contact preservation (for example airbag preservation) for a long time each other afterwards, with these two parts needed power that is separated from each other.The test analysis of locking must press together the air-bag fabric sample of two 2 inches * 2 inches coating side 7 days with 5psi under 100 ℃.If after this time, two samples are torn needed power greater than 50 grams, perhaps utilize the 50 grammes per square metre power that are suspended on the bottom fabric that these fabrics were separated the needed time greater than 10 seconds, then this coating impassabitity locking test.Obviously, it is more little to separate needed shearing force, and coating is good more.For the locking resistance after improving (and reduce thus between the each several part of fabric packaging together inappropriate chance of adhering to), the external coating part can be used for example talcum, silica, silicate clay and starch, as long as the added weight of total artificial rubber composition (comprising external coating) is no more than 2.5 ounces every square yard (and most preferred with lower value appearance, for example about 1.5).
Other two kinds of tests that the airbag cushion of specific coating must be passed through are the aging and humidity burn-in tests of baking oven (heating).These tests are also simulated air-bag fabric and are preserved through long under high temperature tans by the sun with under the relative high humidity.After in fact these tests are used for analyzing the long preservation that (has or do not have moist condition) through 2 or more weeks in hot draft furnace (＞100 ℃), the attribute change of various different fabrics.For purposes of the invention, this test is mainly used to fall the time permeability to air that (going through as top) comes the cated side window airbag of analytic band by measuring distinctive time.Original airbag cushion of the present invention of producing and preserving is under the preservation condition of this strictness, should show greater than about 5 seconds distinctive time and fall the time (after airbag has been inflated to the peak pressure that is approximately higher than 15psi greatly in advance and has allowed all venting, when inflating again) with the gaseous tension of 10psi.Because polyurethane, preferred artificial rubber may be subjected to unfavorable (although do not resemble specific polyester and contain the artificial rubber of polyethers deletrious) influence of high temperature and high humidity among the present invention, should append to special component in the external coating modestly and/or artificial rubber itself in.Antioxidant, antidegradant and metal deactivator can be used for this purpose.For example comprise but should not be limited to available Irganox from CIBA Specialty Chemical
1010 and Irganox
565.This external coating can also provide aging-resistant extra protection; therefore can comprise the aging material that improves of external coating; for example; but be not limited to; polyamide, NBR rubber, EPDM rubber or the like are as long as the artificial rubber composition is no more than the added weight of the target fabric of 2.5 ounces every square yard (preferably at the most much smaller than about 1.5).
Coated film coating forms the substrate of airbag of the present invention basic fabrics on it, most preferably by comprising for example woven fabric that forms of the yarn of polyester or polyethers of syntheticfibres.This yarn preferably has about 105 dawn to the linear density at about 840 dawn, more preferably is about 210 to about 630 dawn.This yarn is preferably formed by many filaments, and wherein every of these filament have about 7 dawn or littler linear density, more preferably about 6 dawn or littler, and most preferably about 4 dawn or littler.In embodiment more preferably, this basic fabrics should be formed by nylon fiber, and nylon 6,6 most preferably.Have been found that when using jointly this polyester material shows good especially adhesive ability and prevents the hold facility of hydrolysis with coating of the present invention.This basic fabrics most preferably utilizes U.S. Patent No. 5,503,197 and the No.5 people such as Bower, the disclosed jet-propelled weaving loom weaving of flowing in 421,378.This woven fabric is referred to as airbag basic fabrics later on.As mentioned above, airbag of the present invention must show low especially permeability to air and must be to be referred to as " side window " airbag.Such as has already been described in detail, in order to provide suitable long cushion rubber protection to the passenger in the process of overthrow accident, this side window airbag (also being called cushion rubber) must keep a large amount of charge air conditioninies in collision process.The side window airbag of any standard all can be used in combination with the coating of low additional amount a kind of product is provided, and it shows needed aforesaid time and falls the time.Most of side window airbags are by arduous, intensive making or sewing up (or other modes), two independent woven fabric base substrates are joined together to form can gas filed structure make.In addition, as one of ordinary skill in the understanding, carry out this making in the position of key and form linear slit (each of fabric layer between point of connection), next this linear slit is formed on the discrete open area that charge air conditioning can flow in the gas filed process.Therefore these open areas form the structure of bolster shape in final gassiness airbag cushion, so that more surf zone is provided in collision process, and for airbag self provides intensity, thereby bear very high internal inflation pressure (and therefore in this inflation event procedure, not exploding).Other side window airbag cushion occur with the woven form of different single-pieces.Generally speaking, by specific key position with two independent layer of cloths simultaneously woven linking together (same, as to form the structure of needed bolster shape) form some inflatable airbag.Therefore these mats have bonded assembly linear slit between two layers.It is above-mentioned in gas replenishment process or the problem of gas loss afterwards to exist so multi-thread seam (all existing in polylith and woven airbag monolithic) to produce.Yarn may be offset, particularly at yarn with multitude of different ways and quantity skew part, overflow the quick venting that produces airbag fast by charge air conditioning thus.Therefore, airbag basic fabrics does not provide more help at reduction permeability to air (falling the time with relevant returning, particularly with high relatively air pressure) aspect.This in the past linear slit problem has mainly proposed to use very thick and heavy and expensive coating that the needs of essential low-permeable are provided.
Recently, no matter be the side window airbag (it needs very a large amount of arduous intensive making to connect woven fabric blank) of polylith, still the woven cushion of traditional monolithic of making has all been obtained progress, for the woven cloth of monolithic more particularly, its floating silk between weaving yarn reduces significantly, thereby fundamentally reducing the unbalanced skew of inflated condition yarn under working, for example belonging to Sollars, Jr. patent Ser.No.09/406, in 264, this specification sheets is all quoted at this.The woven airbag of these monolithics is made on lift dobby loom or jacquard fluid jet woven fabric machine usually, and preferably employed monolithic airbag is made by the woven processing of jacquard.Utilize this improvement, the possibility of the higher leakage at linear slit place reduces greatly.These airbags provide the point of connection place between two-layer fabrics and the machine-knitted structure of balance on every side thereof, make to compare with the woven airbag of the monolithic of standard, reduce in the high-pressure aerated condition yarn under working out-of-position ability that becomes.It's a pity that the problem that the woven airbag of this monolithic of this invention still exists is that woven point of crossing may move and make leakage still may take place with the high speed of suitable work under high-voltage inflation.As a result, still need to utilize the material that reduces and/or eliminate this effect to be coated with the machine-knitted structure of this monolithic of fabric.But this monolithic machine-knitted structure allows the artificial rubber coating of very low additional amount to obtain the low-permeable effect.In fact, utilize every square yard less than 1.5 and be low to moderate about 0.8 ounce low additional coatings, these airbags of the present invention are very well worked.
In addition, although it is not preferred in the present invention, but have been found that coating composition of the present invention for the woven airbag of the monolithic of standard provides similar low-permeable advantage, particularly utilize high-tensile, the high elongation at break of low additional amount of the present invention and do not have the coating of silicone resin; But, form long return needed coating of time is fallen and quantity far above above-mentioned So1lars, the monolithic machine-knitted structure of Jr. invention.Therefore, for the woven airbag of these other monolithics, for realizing suitable low-level permeability to air, every square yard may need 1.5 even reach about 2.7 ounces additional amount.Even utilize the coating of so high additional amount, coating of the present invention itself is compared with coatings such as silicone resin of the prior art standard, that market is on sale (must exist with at least 3.0 ounces every square yard quantity), carries significantly having outstanding progress.
In addition, find that also film coating composition of the present invention has the above-mentioned same advantage of side window airbag of making, sew up formation with additives amount of the present invention etc.Do not connect the potential high-leakage at linear slit place although do not wish very much this structure at these, but have been found that silicone resin neoprene (diene) the rubber coating prescription low additional amount of utilization than standard, the permeability to air of coating of the present invention obviously reduces (in fact reach acceptable and return the time of falling).This additional amount will reach 2.7 ounces every square yard the limit, but according to directly with in the target fabric surperficial film coating composition that contacts using, the artificial rubber composition of sufficiently high tensile strength and enough elongation abilities, verified lower quantity (for example, 2.2 ounces every square yard) is actv..Equally, possibility with reduction coating material (always very expensive usually) quantity, meanwhile, make the target air bag structure have quite low permeability to air, high moisture-resistant ability and the aging stabilizing power of special actv., the airbag of coating composition of the present invention and coating of the present invention itself obviously is significantly improved than airbag coating tool of the prior art.
Main emphasis among the present invention is to be packaged in the cylindrical preservation container at the roof outline line place that is arranged in object vehicle with the airbag cushion of coating with as far as possible little volume.In the structure after one winds up (in order most preferably to be engaged in the hydrostatic column itself; and thus in order when crashing, most preferably to inflate; coming provides sufficient protection to the passenger), airbag of the present invention can be defined as the cylindrical of the diameter that has at the most 23 millimeters.In this example, the cylinder roof profile with 2 meters long is preserved container, and the volume that this container needs approximates 830 cm3s (this volume is calculated as 2 π (radius) 2) greatly.For market side window airbag cushion on sale, the packing diameter after the winding up of standard is 25 millimeters (because the thickness of the needed coating of low-permeable feature are provided) at least.Therefore, the volume of the hydrostatic column of Xu Yaoing should be 980 centimetres at least
3Preferably, the diameter after airbag cushion of the present invention winds up in the preservation process is 20 millimeters at the most, and (volume after the packing that obtains is approximately 628 centimetres
3), be lower than the standard pack volume significantly.And, with the inflation after airbag cushion the degree of depth (promptly, reach downwards along the object vehicle one side length of the nadir of window for example from the roof outline line) relevant, the ratio of the diameter after the packing after the degree of depth of airbag cushion of the present invention (being 17 inches or 431.8 millimeters basically under normal conditions) winds up with it should be about 18.8 at least.Preferably this ratio should be about 21.6 (20 mm dias), and its maxim should be about 24 (having about 18 millimeters minimum diameter).Certainly, the scope of ratio needs not be the degree of depth of 17 inches standard, and is the function of coat thickness and this additional weight basically.
Describe and disclose the present invention though interrelate with specific preferred embodiment and practice, but the present invention is not limited in these certain embodiments, but cover the equivalent of cooresponding structure, structure and the embodiment and the distortion of all changes, and can limit by the scope of the appended claims and suitable content.
Detailed description of preferred embodiment
Pleasurable is, disclose some and had at least 2, the film of the tensile strength of 000psi and at least 180% elongation at break, with every square yard 2.7 ounces at the most, preferably be lower than about 2.5, more preferably about 2.2, and most preferably every square yard less than about 2.2 ounces weight coated on two surfaces of side window air-bag fabric, when being provided at inflation and have the airbag cushion of coating of the permeability to air of low-down and prolongation afterwards.Therefore this unexpected a plurality of useful film coatings form a kind of airbag cushion, be easy to inflation after long-time the preservation, and keep inflated condition in the sufficiently long time, to guarantee security level optimum in the buffer system.In addition, unquestionable needed film coating composition is few more, and final product is cheap more.In addition, the minimizing of the quantity of needed film coating composition will be converted into the reducing of packaging volume of air-bag fabric in the air bag apparatus.Therefore this helps to improve the capacity packing of air-bag fabric.
Produce preferred airbag cushion of the present invention according to following Example.
For example
At first, produce adhesion primer prescription with following composition:
Weight ratio of constituents
Desmoderm 43195 (Bayer Corporation, polyurethane) 25 grams
Dimethylformamide (Aldrich, solvent) 75 grams
Desmodur CB-75N (Bayer, polyisocyanate adhesion promoter) 4 grams
Primer coating is adhered on the two sides of the woven nylon airbag of Jacquard (440 dawn fiber) of 2.5 liters of sizes, this airbag in conjunction with the front as a reference, belong to Sollars, the sequence number of Jr. is No.09/406, and accompanying drawing in 264 the U.S. Patent application and preferred embodiment are made.Primer coating descended dry about 2 minutes at about 160 ℃, obtained every last every square yard about 0.25 ounce dry coating weight.Next, utilize the about 1 minute time length of hot press process at about 188 ℃ of pressure that about 80psi is provided, then polyurethane film (the Dureflex of overlapping 2 mil thick on the both sides of the airbag that has primer coating
TMPT9400).Every total polyurethane film added weight of airbag is every square yard about 2.2 ounces.Airbag is inflated apace and is reached the 30psi bar pressure then.Before gaseous tension is reduced to 8psi through the time more than 28 seconds.Therefore the leakage rate of measuring at 10psi is about 4SCFH.The distinctive time time of falling was surprising value, greater than 80 seconds.
The explanation of accompanying drawing drawing
Fig. 1 represents to use side, the interior views of side window airbag of the present invention vehicle before.
Fig. 2 represents to use side, the interior views of side window airbag of the present invention vehicle afterwards.
The detailed description of accompanying drawing
As shown in Figure 1, expression is side window airbag (not having expression among the figure) inflation vehicle 10 before Inside. Vehicle 10 comprises front stall 12 and back seat 14, front window 16 and rear side window 18, roof wheel Profile 20 is kept at a hydrostatic column 22 that comprises side window airbag of the present invention (not having expression) In the vehicle roof outline line. In vehicle roof outline line 20, also have inflator element 24, when crashing it Start and be that gas enters in the side window airbag (26 among Fig. 2).
Certainly, in the design that is defined by the following claims or scope, the present invention can exist multiple The embodiment and the distortion that change.
Claims (17)
1. airbag cushion that comprises the fabric of coating, wherein said fabric is with every square yard of fabric quantity coating multiple film of 2.7 ounces at the most; And distinctive time of at least 5 seconds fallen the time after wherein said airbag cushion had inflation.
2. airbag cushion according to claim 1, wherein said film is not contain silicone resin.
3. airbag cushion according to claim 1, wherein said thin film composition comprises polyurethane.
4. airbag cushion according to claim 1, the fabric of wherein said coating forms by polyester yarn is woven.
5. airbag cushion according to claim 4, wherein said polyester yarn is made by 6,6 nylon fibers.
6. airbag cushion according to claim 4, wherein said polyester yarn are the polyfilament yarns with the linear density feature at about 210-630 dawn.
7. airbag cushion according to claim 6, wherein said polyfilament yarn are characterised in that every about 7 dawn of filament or thin silk thread density still less.
8. airbag cushion according to claim 1, wherein said film with every square yard at the most 2.5 ounces quantity be present on the described air-bag fabric surface.
9. airbag cushion according to claim 8, wherein said film with every square yard at the most 2.2 ounces quantity be present on the described air-bag fabric.
10. airbag cushion that comprises the fabric of coating, wherein said fabric is coated with multilayer film; Wherein said film has at least 2,000 tensile strength and at least 180% elongation at break; And distinctive time of at least 5 seconds fallen the time after wherein said airbag cushion had inflation.
11. airbag cushion according to claim 9, wherein said film comprises polyurethane.
12. airbag cushion according to claim 10, the fabric of wherein said coating forms by polyester yarn is woven.
13. airbag cushion according to claim 11, wherein said polyester yarn is made by 6,6 nylon fibers.
14. airbag cushion according to claim 12, wherein said polyester yarn are the polyfilament yarns with the linear density feature at about 210-630 dawn.
15. airbag cushion according to claim 13, wherein said polyfilament yarn are characterised in that every about 7 dawn of filament or thin silk thread density still less.
16. airbag cushion according to claim 10, wherein said film with every square yard at the most 2.5 ounces quantity be present on the described air-bag fabric surface.
17. airbag cushion according to claim 16, wherein said film with every square yard at the most 2.2 ounces quantity be present on the described air-bag fabric.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/335,257 US6177365B1 (en) | 1999-06-17 | 1999-06-17 | Two-layered coating system for airbag fabrics |
| US09/335,257 | 1999-06-17 | ||
| US09/350,620 | 1999-07-07 | ||
| US09/350,620 US6177366B1 (en) | 1999-06-17 | 1999-07-09 | Two-layer coating system for airbag fabrics |
| US09/501,467 US7517570B1 (en) | 1999-06-17 | 2000-02-09 | Low permeability airbag cushions having extremely low coating levels |
| US09/501,467 | 2000-02-09 | ||
| US55764300A | 2000-04-25 | 2000-04-25 | |
| US09/557,643 | 2000-04-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1320090A true CN1320090A (en) | 2001-10-31 |
| CN1159179C CN1159179C (en) | 2004-07-28 |
Family
ID=27502518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008017018A Expired - Lifetime CN1159179C (en) | 1999-06-17 | 2000-06-15 | Low permeability airbag cushions having film coatings of extremely low thickness |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1119471A4 (en) |
| JP (1) | JP4657547B2 (en) |
| CN (1) | CN1159179C (en) |
| AU (1) | AU5617400A (en) |
| BR (1) | BR0006932A (en) |
| CA (1) | CA2340939A1 (en) |
| MX (1) | MXPA01001743A (en) |
| WO (1) | WO2000078578A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228492A (en) * | 2010-10-04 | 2013-07-31 | 英威达技术有限公司 | Automobile side curtain airbag modules comprising polyester airbag with gas inflators |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6734123B2 (en) | 1999-06-07 | 2004-05-11 | Bradford Industries, Inc. | Polyurethane coated fabrics for use in air-holding vehicle restraint systems |
| US6740607B2 (en) | 1999-06-07 | 2004-05-25 | Bradford Industries, Inc. | Substrate with stretch and heat sealing properties to make a multidirectional restraint module design |
| US6734125B2 (en) | 1999-06-07 | 2004-05-11 | Bradford Industries, Inc. | Laminated multi-denier mixed fabrics for use in inflatable vehicle restraint systems |
| US6753275B2 (en) | 1999-06-07 | 2004-06-22 | Bradford Industries, Inc. | Laminated multi-layered woven textile fabrics for use in air holding vehicle restraint systems |
| US6239046B1 (en) | 1999-06-07 | 2001-05-29 | Bradford Industries, Inc. | Polysiloxane coated fabrics for use in air bags |
| US6770578B2 (en) | 1999-06-07 | 2004-08-03 | Bradford Industries, Inc. | Laminated textile fabrics for use in air holding vehicle restraint systems |
| US20040029468A1 (en) * | 2001-01-09 | 2004-02-12 | Kwang-Oh Kim | Side curtain typed airbag, and a process of preparing for the same |
| JP2003002150A (en) * | 2001-06-25 | 2003-01-08 | Toyoda Gosei Co Ltd | Head protective air bag device |
| US6713131B2 (en) | 2002-04-08 | 2004-03-30 | Dow Corning Corporation | Methods of coating fabrics with emulsions of elastomeric polymers and polyurethane dispersions |
| US6825263B2 (en) | 2002-04-08 | 2004-11-30 | Dow Corning Corporation | Curable coating compositions from emulsions of elastomeric polymers and polyurethane dispersions |
| EP4297616A1 (en) * | 2021-02-23 | 2024-01-03 | Zephyros Inc. | Seat cushion with a protective layer |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0497842A (en) * | 1990-08-15 | 1992-03-30 | Asahi Chem Ind Co Ltd | Laminated cloth |
| US5110666A (en) * | 1991-05-06 | 1992-05-05 | Reeves Brothers, Inc. | Coated fabric structure for air bag applications |
| JP3461517B2 (en) * | 1992-02-03 | 2003-10-27 | 東レ株式会社 | Airbag |
| JPH05338092A (en) * | 1992-06-04 | 1993-12-21 | Toray Ind Inc | Manufacture of air bag base fabric |
| DE19630854C1 (en) * | 1996-07-31 | 1997-07-24 | Daimler Benz Ag | Head-protecting curtain in motor vehicle |
| GB9619613D0 (en) * | 1996-09-19 | 1996-10-30 | Breed Automotive Tech | An inflatable restraint for a vehicle |
| JP3069601B2 (en) * | 1996-10-03 | 2000-07-24 | 東洋ゴム工業株式会社 | Side airbag |
| US5881776A (en) * | 1997-01-24 | 1999-03-16 | Safety Components Fabric Technologies, Inc. | Rapier woven low permeability air bag fabric |
| JPH11107171A (en) * | 1997-09-29 | 1999-04-20 | Daicel Chem Ind Ltd | Laminated fabric and air bag |
| JPH10273002A (en) * | 1997-03-28 | 1998-10-13 | Toray Ind Inc | Backing fabric for air bag, and air bag |
| US6073961A (en) * | 1998-02-20 | 2000-06-13 | Breed Automotive Technology, Inc. | Inflatable side airbag curtain module |
| US6037279A (en) * | 1998-03-11 | 2000-03-14 | Dow Corning Limited | Coated textile fabrics |
| DE19824601C2 (en) * | 1998-06-02 | 2003-04-03 | Breed Automotive Tech | Air bag with compensation volume |
-
2000
- 2000-06-15 JP JP2001504761A patent/JP4657547B2/en not_active Expired - Fee Related
- 2000-06-15 WO PCT/US2000/016566 patent/WO2000078578A1/en active Application Filing
- 2000-06-15 EP EP00941468A patent/EP1119471A4/en not_active Withdrawn
- 2000-06-15 CA CA002340939A patent/CA2340939A1/en not_active Abandoned
- 2000-06-15 CN CNB008017018A patent/CN1159179C/en not_active Expired - Lifetime
- 2000-06-15 BR BR0006932-9A patent/BR0006932A/en not_active IP Right Cessation
- 2000-06-15 AU AU56174/00A patent/AU5617400A/en not_active Abandoned
-
2001
- 2001-02-16 MX MXPA01001743A patent/MXPA01001743A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228492A (en) * | 2010-10-04 | 2013-07-31 | 英威达技术有限公司 | Automobile side curtain airbag modules comprising polyester airbag with gas inflators |
Also Published As
| Publication number | Publication date |
|---|---|
| AU5617400A (en) | 2001-01-09 |
| MXPA01001743A (en) | 2004-06-07 |
| EP1119471A1 (en) | 2001-08-01 |
| EP1119471A4 (en) | 2011-04-27 |
| JP2003513841A (en) | 2003-04-15 |
| BR0006932A (en) | 2001-06-26 |
| JP4657547B2 (en) | 2011-03-23 |
| CN1159179C (en) | 2004-07-28 |
| CA2340939A1 (en) | 2000-12-28 |
| WO2000078578A1 (en) | 2000-12-28 |
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