JP2005096749A - Base cloth for airbag, and airbag formed thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airbag which is excellent in storage property, capable of rapidly absorbing hot gas ejected from an inflator when developed, and reducing burning of an occupant, and formed of a base cloth for occupant protection of excellent flame resistance. <P>SOLUTION: The base cloth for the airbag is a laminated cloth with a non-woven textile formed of flame-resistant fiber inserted between synthetic resin fiber-made cloths, and the laminated cloth is quilted and integrated. The ventilation amount under the differential pressure of 125 Pa of the non-woven textile formed of the flame-resistant fibers is in a range of 50-300 cc/cm<SP>2</SP>/sec, and the laminated cloth is integrally sewn. The airbag is formed by using a base cloth for the airbag, and equipped so that a blast blowing-out direction controlling member having an opening part to control the ejection direction of the blast to be blown from an inflator covers a blast blowing-out port of the inflator. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention has an air bag base fabric excellent in storability and has excellent flame resistance for passenger protection, which quickly absorbs the hot gas ejected from the inflator when the airbag is deployed, and reduces burns to the passenger. It relates to an airbag.

  In recent years, various types of airbags have been developed and recognized for their effectiveness in order to ensure the safety of passengers in the event of accidents involving various types of transportation, especially automobiles. Not only driver airbags, passenger airbags, and knee airbags that protect passengers from crashes, but also side airbags and curtain airbags that protect passengers from side crashes are becoming widespread.

  The airbag is inflated and deployed in a very short time after the vehicle collides to absorb the passenger's collision energy generated during the collision. This bag is inflated and deployed with a high-power, high-temperature gas from a gas generator called an inflator, and the bag (main body base fabric), reinforcing fabric, and sewing thread that constitute the airbag can withstand the above gas It has become. As its structure, an airbag using a coated base fabric in which a heat-resistant resin or rubber is applied to the airbag base fabric has been proposed. However, with coating base fabrics, not only is the flame resistance resistant to high power and high-temperature gas generated from the inflator, but the weight of the airbag increases due to the coating, resulting in increased bulk and processing costs. There is a problem.

  On the other hand, in 2000, with the revision of US legislation FMVSS208, dual inflators are being considered. Since this inflator is a two-stage deployment system, the gas output at the second stage is higher than the output of the conventional inflator. As the size of the airbag base fabric increases and damage to the airbag base fabric increases, there is an increasing demand for problems with the high output and high temperature gas of the airbag base fabric.

  From these points of view, for example, an airbag (see Patent Document 1) in which a part of an airbag base fabric is made of a flame-resistant fiber fabric has been proposed. The fiber fabric is merely laminated on the non-coated base fabric, and there is a risk that the flame-resistant fabric will scatter due to the deployment of the high-power, high-temperature inflator. In deployed airbags, fabric scattering is a very dangerous problem. Further, in the airbag, it has been proposed to laminate a flame resistant fiber fabric on a non-coated base fabric with a silicone-based adhesive. However, not only does the airbag become bulky and the packaging volume increases, A change in internal pressure due to a decrease in the air permeability of the cloth may occur, and stress may concentrate on the sewing portion of the bag when the airbag is deployed, the sewing portion may be damaged, and the function as the airbag may not be performed. Further, the use of a large amount of flame-resistant fiber fabric or the use of a silicone adhesive increases the cost.

  Also, as another means, a method has been adopted in which a portion requiring particularly high temperature resistance and high output performance is laminated by laminating a plurality of synthetic fiber fabrics, but this increases the package volume and weight of the airbag. linked. From the above, the actual situation is not enough to satisfy the practical use as an airbag.

As described above, a low-cost base fabric and an airbag that are excellent in flame resistance that can withstand high output and high-temperature gas and that have excellent storage properties are required for the airbag.
JP-A-8-310324

  In view of the drawbacks of such conventional airbags, the present invention has excellent storability as an airbag base fabric, and quickly absorbs the hot gas ejected from the inflator when the airbag is deployed, thereby reducing burns to the passengers. It is an object of the present invention to provide an air bag base fabric excellent in flame resistance for occupant protection and an air bag comprising the same.

  The present invention employs the following means in order to solve such problems. That is, the airbag fabric of the present invention is a laminated fabric in which a flameproof fiber nonwoven fabric is inserted between synthetic fiber fabrics, and the laminated fabric is quilted and integrated. To do.

  In the present invention, the “flame-resistant fiber nonwoven fabric” refers to a nonwoven fabric using “flame-resistant fibers” obtained by flame-treating fibers made of organic compounds.

The airbag fabric according to the present invention is a laminated fabric in which a flame resistant fiber nonwoven fabric is laminated on a synthetic fiber fabric, and the air permeability of the flame resistant fiber nonwoven fabric under a differential pressure of 125 Pa is 50 to 300 cc / cm ² /. It is the range of sec, Comprising: This laminated fabric is integrated by sewing, It is characterized by the above-mentioned. Moreover, the airbag of this invention is comprised using this base fabric for airbags. Furthermore, in the airbag of the present invention, the blast ejection direction control member formed using the airbag fabric and having an opening for controlling the ejection direction of the blast ejected from the inflator is the inflator. It is equipped so as to cover the blast jet outlet.

  According to the present invention, an air bag base fabric having excellent storability and flame resistance for occupant protection that quickly absorbs the hot gas ejected from the inflator when the airbag is deployed and reduces burns to the occupant. And since the airbag which consists of it can be provided, the passenger | crew protection system by an airbag can be spread and promoted.

  Examples of the airbag fabric made of synthetic fibers in the present invention include polyamide fibers, polyester fibers, aramid fibers, rayon fibers, polysulfone fibers, and ultrahigh molecular weight polyethylene fibers. Polyamide fiber is nylon 6, nylon 66, nylon 12, nylon 46, copolymer polyamide fiber of nylon 6 and nylon 66, copolymer polyamide fiber obtained by copolymerizing nylon 6 with polyalkylene glycol, dicarboxylic acid, amine or the like. It ’s like that. The polyester fiber is a polyethylene terephthalate fiber or a polybutylene terephthalate fiber. It may be a copolyester fiber obtained by copolymerizing polyethylene terephthalate or polybutylene terephthalate with an aliphatic dicarboxylic acid such as isophthalic acid, 5-sodium sulfoisophthalic acid or adipic acid as an acid component. Of these, polyamide fibers and polyethylene terephthalate fibers excellent in mass productivity and cost are preferable. Nylon 6 fiber and nylon 66 fiber are particularly excellent in impact resistance and are preferable. In addition, the synthetic fiber mentioned above may contain additives, such as a heat stabilizer, antioxidant, a light stabilizer, a smoothing agent, an antistatic agent, a plasticizer, a thickener, a pigment, a flame retardant.

  The flame resistant fiber in the present invention is a fiber obtained by subjecting a fiber comprising an organic compound to a flame resistance treatment at 200 ° C. or higher, preferably 200 ° C. to 300 ° C. Examples of this kind of flame-resistant fiber include phenol fiber, aramid fiber, acrylic flame-resistant fiber, and polyimide fiber. Particularly preferred is an acrylic flame-resistant fiber obtained by flame-treating acrylic fiber at 200 ° C. to 300 ° C. Among these, an acrylic flame-resistant fiber having a limiting oxygen index (LOI value) of 40 or more. Fiber is particularly preferred.

  The flame resistant fiber nonwoven fabric in the present invention is a nonwoven fabric made of the flame resistant fiber. The form of the nonwoven fabric is a needle punch or a water jet punch and is not limited thereto.

  Moreover, since the flameproof fiber nonwoven fabric used by this invention is inserted between synthetic fiber fabrics, a lightweight and thin thing is preferable. For this reason, the spunlace nonwoven fabric and the needle punched nonwoven fabric are particularly preferable in the present invention because they are flexible, have a low basis weight and are lightweight, and are relatively inexpensive. Furthermore, it is essential that the flame-resistant fiber nonwoven fabric in the present invention is inserted between synthetic fiber fabrics and quilted. It is preferable that the flame resistant fiber nonwoven fabric into which the hot gas ejected from the inflator is inserted by quilting is absorbed. Moreover, if the flameproof fiber nonwoven fabric inserted by quilting is an entangled nonwoven fabric, it is particularly preferable from the viewpoint of maintaining the shape, preventing scattering and deformation due to the blast blown from the inflator.

Next, only when the flame resistant fiber nonwoven fabric used in the present invention has a certain air permeability, it can be used by being laminated on a synthetic fiber fabric and integrated by sewing. In this case, it is essential that the amount of aeration of the flame-resistant fiber nonwoven fabric under a differential pressure of 125 Pa is in the range of 50 to 300 cc / cm ² / sec. Air permeability 50 cc / cm ² / is less than sec blast forces can not oxidized fiber nonwoven scattering to parry from the inflator, easily deformed, is ejected from the inflator exceeds 300 cc / cm ² / sec Tend to be unable to absorb the heat of the blast. Desirably, it is in the range of 150 to 300 cc / cm 2 / sec. By adjusting the air flow rate of the flameproof fiber nonwoven fabric within such a range, the force of the blast blown from the inflator can be passed, which is preferable in preventing the base fabric from being scattered or deformed. In addition, it is possible to reduce the change in the air flow rate when the synthetic fiber fabric is laminated and integrated, and the change in the air flow rate when the synthetic fiber fabric is a single body. Thereby, in the airbag designed by the synthetic fiber cloth single-piece | unit, especially from the point that a laminated fabric can be used limitedly to the part for which heat resistance is especially requested | required, without changing an initial design. preferable.

  Since the heat-resistant sewing thread used in the present invention is exposed to the hot gas from the inflator when the airbag is deployed, the heat-resistant fiber having a melting point or decomposition point higher than the melting point or decomposition point of the fiber material constituting the airbag main body fabric When the yarn is used, the effects of the present invention can be effectively exhibited. Therefore, the fiber material constituting the airbag body base fabric is usually a material having a melting point of about 260 ° C. such as nylon 66 or polyester, and fibers having a melting point or decomposition point higher than these materials. Materials such as polyphenylene sulfide fiber, polyether ether ketone fiber, polytetrafluoroethylene fiber, polyethylene naphthalate fiber, polyarylate fiber, aramid fiber, nylon 46 fiber, carbon fiber, alumina fiber, silicone carbide fiber, steel fiber, etc. One kind or two or more kinds of filaments, spun yarn, blended yarn, blended yarn, twisted yarn, and wound yarn may be used, but are not limited thereto. Further, a sewing thread that is usually used for sewing an airbag may be coated with a heat resistant resin, or a sewing thread coated with the heat resistant resin may be coated with a heat resistant resin. . Examples of the heat-resistant resin include, but are not limited to, a silicone resin or rubber, a fluorine resin or rubber, an epoxy resin, a phenol resin, and a polyimide resin. The heat-resistant sewing thread may include at least one inorganic heat-resistant fiber selected from glass fiber, metal fiber, flame-resistant fiber, and carbon fiber.

The flame resistant fiber nonwoven fabric in the present invention preferably has a basis weight in the range of 60 to 180 g / m ² . If it is less than 60 g / m ^{2, the} nonwoven fabric is insufficient to absorb heat by the high output gas from the inflator, and there is a risk that the synthetic fiber fabric will melt. On the other hand, if it exceeds 180 g / m ^{2, the} airbag base fabric constituted by the nonwoven fabric is bulky, the packaging volume of the airbag is increased, the storage property is deteriorated, and the flame-resistant fiber nonwoven fabric is used in a large amount. Therefore, it becomes expensive and not good.

  Moreover, it is preferable that the flame resistant fiber nonwoven fabric in this invention exists in the range of 0.3-2.0 mm in thickness. If it is smaller than 0.3 mm, it is insufficient to absorb heat by the high-power gas from the inflator, and there is a risk that the synthetic fiber fabric will melt. On the other hand, if it exceeds 2.0 mm, quilting becomes difficult and the airbag base fabric is bulky, the packaging volume of the airbag is increased, and the storage property is deteriorated.

Moreover, it is preferable that the flame-resistant fiber nonwoven fabric in this invention is the range of 50-300 cc / cm < ² > / sec of the ventilation | gas_flowing amount under 125 Pa differential pressure | voltage. Desirably, it is in the range of 150 to 300 cc / cm ² / sec, and more desirably in the range of 250 to 300 cc / cm ² / sec. By adjusting the air permeability of the flame-resistant fiber nonwoven fabric to the above range, the blast blown from the inflator can appropriately permeate the laminated fabric and absorb the hot gas. When the air flow rate is less than 50 cc / cm ² / sec, the air permeability of the portion using the laminated fabric is lowered, the hot gas concentrates on the sewing portion or the portion used in the synthetic fiber fabric alone, and melting or stress occurs. It is not preferable because damage due to concentration occurs. On the other hand, if the air flow rate is higher than 300 cc / cm ² / sec, it is not preferable to absorb the heat of the blast blown from the inflator.

  In the present invention, the flame resistant fiber nonwoven fabric is impregnated and fixed with the heat resistant resin in the quilting part in the present invention, which is particularly preferable from the aspect of maintaining the shape, preventing scatter of the base fabric due to the blast blown from the inflator .

  Moreover, it is very preferable that the seam portion of the quilting portion of the laminated fabric in the present invention is sealed with the heat-resistant resin in terms of preventing melting of the hot gas from the inflator.

  The airbag fabric of the present invention is a fabric suitable for a driver's seat airbag and a passenger's airbag, but is used for a rear seat airbag, a curtain airbag, a side airbag, a knee airbag, and the like. Can also be used. In particular, a driver seat and a passenger seat equipped with a high temperature and high output inflator are preferably used.

  The airbag fabric of the present invention is also used for a blast ejection direction control member for controlling the direction of a blast ejected from an inflator. That is, the airbag fabric according to the present invention maintains the form without burning even in the vicinity of the inflator attachment port, which is a part heated to a high temperature, not only the body fabric constituting the airbag. And it is effectively used as a member for controlling the direction of blast emission for controlling the direction of the blast from the inflator. Such a blast blowing direction control member is used in such a manner that the blast jet outlet is covered around the inflator mounting opening, and in particular, like a passenger seat airbag, the shape is complicated and the capacity is high. In the case of a large airbag or the like, it is preferable to adjust or change the direction of the jet in the direction in which the blast is adapted to the inflated shape. For that purpose, an opening for ejecting a blast of an amount necessary for inflation in accordance with the deployment shape of the airbag, that is, a blast ejection direction control member provided with a control hole is provided inside the airbag made of the main body base fabric, for example, In the passenger airbag, a bag-shaped blast blowing direction control member having a control hole and having an open end is attached to the blast jet outlet of the inflator. That is, another feature of the airbag according to the present invention is that it is used for controlling the blast ejection direction, which is formed by using the airbag fabric and has an opening for controlling the ejection direction of the blast ejected from the inflator. The member is in the form of covering the blast outlet of the inflator.

  Moreover, it is preferable to use the base fabric for airbags of this invention as a heat insulating material of the attachment part of an inflator and an airbag main body. As a result, the number of laminated reinforcing fabrics can be greatly reduced, and the airbag can be made compact and light.

  As described above, the air bag base fabric and the air bag according to the present invention are excellent in storability as an air bag base fabric, and have flame resistance for occupant protection that reduces burns to the occupant when the airbag is deployed. Further, a laminated fabric in which a flame-resistant nonwoven fabric is inserted between conventional airbag fabrics, and the laminated fabric is quilted and integrated so that the hot gas from the inflator It is in the point that it absorbs quickly and is excellent in occupant protection.

Next, the present invention will be described in more detail with reference to examples. Various evaluations in the examples were performed according to the following methods.
(1) The basis weight (g / m ² ) was determined by measuring the weight of a nonwoven fabric having a length of 25 cm and a width of 25 cm based on JIS L1906 5.2-2000 (mass per unit area).
(2) The thickness of the folding bag, which is a storage evaluation, was measured in a state of being folded 10 times in a bellows shape parallel to the length direction, and the case of Comparative Example 1 was taken as 100. Relative comparison values were used.
(3) The damage state of the bag was evaluated by the following method. That is, evaluation was performed by using an inflator, a fixing bracket, and a resin case manufactured by Daicel Chemical Industries, incorporating an airbag into a module, performing a deployment test, and observing the state of the airbag.
(4) The air flow rate was measured at a differential pressure of 125 Pa based on JIS L1906 5.8-2000 (Fragile method).

Example 1
A total fineness of 470 dtex, 72 filaments, strength 8.4 cN / dtex, elongation 22%, non-twisted nylon 6.6 fibers, and in the water jet loom, the weft density of both warps and wefts is 54 / 2.54 cm. A plain woven fabric was obtained.

  Next, the fabric was immersed in an 80 ° C. warm water bath containing 0.5 g / l of alkylbenzene sulfonic acid soda and 0.5 g / l of soda ash for 1 minute and then scoured, then dried at 160 ° C. for 1 minute, Heat setting was performed at 190 ° C. for 1 minute to obtain a plain woven fabric having a warp and weft weaving density of 55 / 2.54 cm.

A needle punched nonwoven fabric made of an acrylic flame-resistant fiber having a basis weight of 70 g / m ² and an air flow rate of 250 cc / cm ² / sec is inserted between the two airbag fabrics, and the sewing thread is a nylon 66 fifth yarn. Then, they were integrated by quilting at a needle moving number of 3.5 needles / cm.

  The airbag fabric thus obtained is used as a base fabric for the blast jet direction control member covering the blast jet outlet of the main body base fabric and the inflator, and as a heat insulating material for the inflator and the airbag mounting portion. An airbag was prepared using the sewing thread. Table 1 shows the preparation conditions and Table 2 shows the effects of the airbag characteristics. This base fabric for airbags was excellent in storability, and there was no problem with damage after deployment of the bag.

Example 2
An airbag fabric similar to that in Example 1 and an acrylic flameproof fiber spunlace nonwoven fabric having a basis weight of 180 g / m ² and an air flow of 70 cc / cm ² / sec were inserted, and quilted with the same sewing thread as in Example 1. Integrated.

  The airbag base fabric thus obtained was used as a blast blowing direction control base fabric covering the blast jet outlet of the inflator and as a heat insulating material for the inflator and the airbag mounting portion, and the airbag was formed with the sewing thread. It was created. The airbag characteristics are shown in Tables 1 and 2. This base fabric for airbags was excellent in storability, and there was no problem with damage after deployment of the bag.

Example 3
Nylon 66 in which an airbag fabric similar to that in Example 1 and an acrylic flameproof fiber spunlace nonwoven fabric having a basis weight of 120 g / m ² and an air flow rate of 150 cc / cm ² / sec were inserted and the sewing thread was coated with a silicone resin No. 5 yarn was integrated by quilting at a needle operating number of 3.5 needles / cm.

  The airbag base fabric thus obtained was used as a blast blowing direction control base fabric covering the blast outlet of the inflator and as a heat insulating material for the inflator and the airbag mounting portion, and the airbag was formed using the sewing thread. It was created. The airbag characteristics are shown in Tables 1 and 2. This base fabric for airbags was excellent in storability, and there was no problem with damage after deployment of the bag.

Example 4
A needle punched non-woven fabric made of an acrylic flame-resistant fiber having the same fabric for airbag as in Example 1 and an acrylic flame-resistant fiber with a basis weight of 70 g / m ² and an air flow rate of 250 cc / cm ² / sec is sewn with nylon No. 5 yarn. did.

  The airbag fabric thus obtained was used as a base fabric for a blast jet direction control member covering the main body fabric and the blast jet outlet of the inflator, and as a heat insulating material for the attachment portion of the inflator and the airbag. An airbag was created using the sewing thread. The airbag characteristics are shown in Tables 1 and 2. This base fabric for airbags was excellent in storability, and there was no problem with damage after deployment of the bag.

Example 5
An airbag fabric similar to that in Example 1 and an acrylic flameproof fiber spunlace nonwoven fabric having a basis weight of 180 g / m ² and an air flow rate of 70 cc / cm ² / sec are sewn with the same sewing thread as in Example 3. did.

  The airbag fabric thus obtained is used as a blast blowing direction control fabric covering the blast jet outlet of the inflator and as a heat insulating material for the inflator and the airbag mounting portion, and the airbag is used with the sewing thread. Created. The airbag characteristics are shown in Tables 1 and 2. This base fabric for airbags was excellent in storability, and there was no problem with damage after deployment of the bag.

Comparative Example 1
The same airbag fabric as in Example 1 is used as the base fabric and the blast jet direction control base fabric covering the blast jet outlet of the inflator and the heat insulator for the inflator and the airbag attachment part. An airbag was created with sewing threads. The airbag characteristics are shown in Tables 1 and 2. Although the airbag base fabric has excellent storage properties, the developed base fabric and the sewn portion are melted and damaged, and the deployment characteristics are inferior.

Comparative Example 2
An airbag fabric similar to that of Example 1 and an acrylic flameproof fiber spunlace nonwoven fabric having a basis weight of 70 g / m ² and an air flow rate of 250 cc / cm ² / sec were joined and integrated by lamination with a silicone adhesive.

  In this way, the obtained airbag fabric was used as a heat insulating material for the blast blowing direction controlling fabric and the inflator and the airbag mounting portion covering the blast blowing outlet of the main body fabric and the inflator. An air bag was made with the same sewing thread as in. The airbag characteristics are shown in Tables 1 and 2. This airbag fabric has a large packaging volume and is bulky, so that it is inferior in storage property, and the nonwoven fabric is melted and scattered after the deployment, and the deployment properties are also inferior.

Comparative Example 3
An airbag fabric similar to that in Example 1 and an acrylic flame-resistant fiber spunlace nonwoven fabric having a basis weight of 55 g / m ² and an air flow rate of 350 cc / cm ² / sec are inserted and coated with the same silicone resin as in Example 3. Nylon 66 sewing thread was integrated by quilting. The airbag fabric obtained in this way is used as a heat insulating material for the blast blowing direction control fabric covering the main body fabric and the blast blowing outlet of the inflator and the inflator and the airbag mounting portion, and the above sewing thread I made an airbag. The airbag characteristics are shown in Tables 1 and 2. Although the airbag fabric was excellent in storage properties, the deployed fabric was melted and the nonwoven fabric was scattered, and the deployment properties were inferior.

Comparative Example 4
The same airbag fabric as in Example 1 and an acrylic flameproof fiber fabric having a basis weight of 200 g / m ² and an air flow rate of 40 cc / cm ² / sec are inserted between two airbag fabrics, and sewing is performed in the same manner as in Example 1. The yarn was integrated by quilting. In this way, the obtained airbag fabric was used as a heat insulating material for the blast blowing direction controlling fabric and the inflator and the airbag mounting portion covering the blast blowing outlet of the main body fabric and the inflator. An air bag was made with the same sewing thread as in. The airbag characteristics are shown in Tables 1 and 2. This airbag base fabric has a large packaging volume and is bulky, so that the storage property is inferior. Further, the sewn portion after the deployment is damaged, and the deployment characteristics are also inferior.

Comparative Example 5
An airbag base fabric similar to that in Example 1 and an acrylic flame-resistant fiber spunlace nonwoven fabric having a basis weight of 120 g / m ² and an air flow of 40 cc / cm ² / sec are inserted, and coated with the same silicone resin as in Example 3. The nylon 66 was sewn and integrated by quilting. The airbag base fabric thus obtained was used as a blast blowing direction control base fabric covering the blast jet outlet of the inflator and as a heat insulating material for the inflator and the airbag mounting portion, and the airbag was formed with the sewing thread. It was created. The airbag characteristics are shown in Tables 1 and 2. Although the airbag fabric was excellent in storage, damage to the sewn portion after deployment was observed, and the deployment characteristics were inferior.

Comparative Example 6
An airbag fabric similar to that in Example 1 and an acrylic flameproof fiber fabric having a basis weight of 70 g / m ² and an air flow of 250 cc / cm ² / sec are inserted between two airbag fabrics, and sewing is performed in the same manner as in Example 1. The yarn was integrated by quilting. The airbag base fabric thus obtained was used as a blast jet direction control base fabric covering the main body base fabric and the blast jet outlet of the inflator, and the airbag was used with the same sewing thread as in Example 1. Created. The airbag characteristics are shown in Tables 1 and 2. This airbag base fabric had excellent storage properties, but the heat insulating material after deployment was damaged, and the deployment characteristics were inferior.

Comparative Example 7
An airbag fabric similar to that in Example 1 and an acrylic flame-resistant fiber spunlace nonwoven fabric having a basis weight of 120 g / m ² and an air flow rate of 40 cc / cm ² / sec were sewn and integrated as in Example 3. . The airbag base fabric thus obtained was used as a heat insulating material for the blast blowing direction control base fabric and the inflator and the airbag attachment portion covering the main body base fabric and the blast outlet of the inflator, and the above sewing was performed. And created an airbag. The airbag characteristics are shown in Tables 1 and 2. Although the airbag fabric was excellent in storage properties, the nonwoven fabric after deployment was damaged, and the deployment characteristics were inferior.

  As is clear from Tables 1 and 2, the airbag base fabric and the airbag obtained by the examples are superior in storage properties as compared to the comparative example, and the state of the airbag after deployment is also very good. It was something.

  Although this invention is mainly used for the base fabric for airbags, such as a motor vehicle, and the airbag which consists of it, it is not restricted to them.

Claims (22)

A base fabric for an air bag, which is a laminated fabric in which a flame-resistant fiber nonwoven fabric is inserted between synthetic fiber fabrics, and the laminated fabric is quilted and integrated. The airbag fabric according to claim 1, wherein the quilting is formed of a heat-resistant sewing thread. The air according to claim 2, wherein the heat-resistant sewing thread is any one of a composite sewing thread selected from the following A to C and comprising at least one fiber selected from natural fibers and synthetic fibers and a heat-resistant resin. Base fabric for bags.
(A) A sewing thread composed of heat-resistant resin-coated fibers.
(B) A sewing thread whose surface is covered with a heat-resistant resin.
(C) A sewing thread in which the surface of a sewing thread composed of heat-resistant resin-coated fibers is further coated with a heat-resistant resin. The air according to claim 2 or 3, wherein the heat-resistant sewing thread is composed of fibers containing at least one inorganic heat-resistant fiber selected from glass fiber, metal fiber, flame-resistant fiber, and carbon fiber. Base fabric for bags. The base fabric for an air bag according to any one of claims 1 to 4, wherein the flame resistant fiber nonwoven fabric is an entangled nonwoven fabric. Resistant flame fibers nonwoven, base fabric for an air bag according to any one of claims 1 to 5 and has a basis weight in the range of 60~180g / m ^2. The base fabric for an air bag according to any one of claims 1 to 6, wherein the flame-resistant fiber nonwoven fabric has a thickness in the range of 0.3 to 2.0 mm. The air bag base fabric according to any one of claims 1 to 7, wherein the flame-resistant fiber nonwoven fabric has an air permeability under a pressure difference of 125 Pa of 50 to 300 cc / cm ² / sec. The airbag fabric according to any one of claims 1 to 8, wherein the flame resistant fiber nonwoven fabric is impregnated and fixed with the heat resistant resin. The base fabric for airbags in any one of Claims 1-9 in which the seam part of the quilting part of this laminated fabric is sealed with heat resistant resin. A laminated fabric in which a flame resistant fiber nonwoven fabric is laminated on a synthetic fiber fabric, and the air permeability of the flame resistant fiber nonwoven fabric under a differential pressure of 125 Pa is in the range of 50 to 300 cc / cm ² / sec, and the laminated fabric is sewn. A base fabric for an air bag, characterized in that the base fabric is integrated. The airbag fabric according to claim 11, wherein a heat-resistant sewing thread is used for sewing. The air according to claim 12, wherein the heat-resistant sewing thread is any one of a composite sewing thread selected from the following A to C and comprising at least one fiber selected from natural fibers and synthetic fibers and a heat-resistant resin. Base fabric for bags.
(A) A sewing thread composed of heat-resistant resin-coated fibers.
(B) A sewing thread whose surface is covered with a heat-resistant resin.
(C) A sewing thread in which the surface of a sewing thread composed of heat-resistant resin-coated fibers is further coated with a heat-resistant resin. The air according to claim 12 or 13, wherein the heat-resistant sewing thread is composed of fibers containing at least one inorganic heat-resistant fiber selected from glass fibers, metal fibers, flame-resistant fibers, and carbon fibers. Base fabric for bags. The base fabric for an airbag according to any one of claims 11 to 14, wherein the flame-resistant fiber nonwoven fabric is an entangled nonwoven fabric. Resistant flame fibers nonwoven, an airbag fabric according to any one of claims 11 to 15 and has a basis weight in the range of 60~180g / m ^2. The base fabric for an air bag according to any one of claims 11 to 16, wherein the flame-resistant fiber nonwoven fabric has a thickness in a range of 0.3 to 2.0 mm. The airbag comprised using the base fabric for airbags in any one of Claims 1-17. A blast ejection direction control member having an opening for controlling the ejection direction of a blast ejected from an inflator, formed using the airbag fabric according to any one of claims 1 to 17, is an inflator. Airbag equipped to cover the blast jet outlet of The airbag according to claim 19, wherein the opening is a control hole for ejecting a blast of an amount necessary for inflation in accordance with the deployed shape of the airbag. The airbag according to any one of claims 1 to 17, wherein the airbag base fabric is used as a heat insulating material for an attachment portion of an inflator and an airbag main body. The airbag according to any one of claims 19 to 21, wherein the airbag is used for a driver seat or a passenger seat.