KR20180057195A - Fabric for air bag and air bag apparatus using thereof - Google Patents

Abstract

The present invention relates to a fabric for an airbag and an airbag apparatus using the same. More particularly, the present invention relates to a fabric for an airbag applicable to a hinge of an airbag apparatus, and an airbag apparatus using the same. The fabric for an airbag according to one aspect of the present invention includes a part formed by weaving a unit comprising a high-elongation fiber and a high-stiffness fiber having a structure wound in the spiral axis direction of the high-elongation fiber.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fabric for an air bag,

And more particularly, to a fabric for an air bag applicable to a hinge of an air bag apparatus and an air bag apparatus using the same.

The airbag device is one of the safety systems installed in a vehicle and prevents an occupant from bumping into or out of the vehicle when the vehicle collides with an obstacle.

The airbag device protects the head and chest of the passenger so as to prevent the passenger from colliding with the steering wheel or windshield secondarily. The time from collision to crash determination is generally 10 ms, and an electric signal is output, and the time required for the cushion of the airbag to completely expand is about 30 to 40 ms.

As the cushion of the airbag device is instantaneously inflated, the tear line (T) formed on the inside of the crash pad is cut and the airbag door is rotated. At this time, the hinge, which is the connection point of the airbag door, . As a result, the hinge may be damaged. In this case, if it is mistaken, it may cause serious injury to the passengers.

Therefore, there is a demand for research and development of an airbag structure capable of preventing the breakage of the hinge while preventing the deployment of the airbag door.

An aspect of the present invention is to provide an airbag device using an airbag fabric at the hinge portion of an airbag fabric and an airbag device having high elongation and high stiffness characteristics.

Fabrics for airbags according to one aspect include high elongation fibers; And a high stiffness fiber having a structure in which the high elongation fiber is wound in the longitudinal direction of the helical axis.

Also, a plurality of unit bodies may be provided to form a subunit, and the subunit may include a structure in which the subunits are connected by high-stiffness fibers.

The fabric for an airbag may also comprise a high tensile rate fiber which, when the high elongation fiber is broken by an impact applied in the longitudinal direction of the high tensile rate fiber, is stretched to form a tensile stretching section.

In addition, the high elongation fibers may include those having a denier in the range of 200 to 2000 g / 9000 m.

Also, the high elongation fibers may comprise those having a tensile strength in the range of 0.5 to 6 gf / de.

In addition, the high elongation fibers may include those having an elongation in the range of 30 to 500%.

In addition, the high elongation fibers may comprise those provided with elastomeric fibers.

The high-stiffness fibers may also have a denier in the range of 200 to 1500 g / 9000 m.

The high-stiffness fibers may also have a tensile strength in the range of 6 to 18 gf / de.

Further, the high-stiffness fibers may include those having an elongation of 20% or less.

An airbag apparatus according to one aspect, comprising: an airbag housing; An airbag cushion contained in the airbag housing; An airbag door opening and closing the airbag housing; And a hinge formed by a fabric for an airbag connecting the airbag housing and the airbag door, wherein the fabric for the airbag comprises a high stiffness fiber having a structure that is wound in a longitudinal spiral axis of the high elongation fiber and the high elongation fiber May be formed by weaving.

Further, the fabric for an airbag may include a structure in which the rotation axis direction of the hinge and the longitudinal direction of the high-elongation fiber are oriented in the vertical direction.

It may also include a free-stretchable section between the airbag housing and the airbag door to allow free stretching of the high-elongation fibers against the impact applied in the longitudinal direction of the high-elongation fibers.

The fabric for an airbag may also include those bonded to an airbag housing material and an airbag door material by an insert injection molding method.

Further, the fabric for an airbag may include a subunit formed by providing a plurality of unit bodies, and the subunit may include a structure in which the subunits are connected by highly rigid fibers.

The fabric for an airbag may also comprise a high tensile rate fiber which, when the high elongation fiber is broken by an impact applied in the longitudinal direction of the high tensile rate fiber, is stretched to form a tensile stretching section.

The high elongation fibers may also include those having a denier in the range of 200 to 2000 g / 9000 m, a tensile strength in the range of 0.5 to 6 gf / d, and an elongation in the range of 30 to 500%.

Also, the high-stiffness fibers may include those having a denier in the range of 200 to 1500 g / 9000 m, a tensile strength in the range of 6 to 18 gf / d, and an elongation in the range of 20% or less.

According to the fabric for an airbag according to one aspect and the airbag device using the same, it is possible to prevent the airbag door from being scattered when the airbag is deployed.

Also, by combining the advantages of the high-stretch fiber and the high-stiffness fiber, it is possible to provide an airbag hinge material capable of free stretching and tensile stretching without a separate stretching structure. As a result, it is possible to realize an integrated structure of an airbag door and a crash pad without requiring separate bonding and special weaving processes, resulting in cost reduction and productivity improvement.

1 is a view showing the appearance of a vehicle according to an embodiment.
2 is an exploded view of a crash pad for a vehicle having an airbag device according to one embodiment.
3 is a cross-sectional view showing a part of a crash pad for a vehicle having an airbag device according to an embodiment.
4 is a cross-sectional view showing the structure of an airbag device according to one embodiment.
5 is a view showing a structure of a fabric for an airbag according to an embodiment.
Fig. 6 is a view showing a structure of a fabric for an airbag deformed by an impact applied in the direction D1 shown in Fig. 5;
7 is a view showing a closed state of an airbag door of an airbag apparatus according to an embodiment.
8 is a view showing an opened state of the airbag door of the airbag apparatus according to one embodiment.
Fig. 9 is a view showing a specimen for a peel test produced.

Like reference numerals refer to like elements throughout the specification. The present specification does not describe all elements of the embodiments, and redundant description between general contents or embodiments in the technical field of the present invention will be omitted.

Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

The terms first, second, etc. are used to distinguish one element from another, and the elements are not limited by the above-mentioned terms.

The singular forms " a " include plural referents unless the context clearly dictates otherwise.

Hereinafter, the working principle and embodiments of the present invention will be described with reference to the accompanying drawings.

The present invention relates to an airbag fabric and an airbag device using the same. The fabric for an airbag according to the published invention can be applied to a hinge of an airbag device with a fabric with high elongation and high stiffness fibers.

Hereinafter, the structure of the vehicle in which the airbag device is installed and the structure of the airbag device will be briefly described, and the airbag fabric applied to the hinge of the airbag device will be described.

First, the appearance of a vehicle provided with an airbag device according to an embodiment will be described. 1 is an external view of a vehicle according to an embodiment.

1, a vehicle 10 includes a main body 1 forming an outer appearance of a vehicle 10, a windshield 2 providing a driver with an inside view of the vehicle 10 in front of the vehicle 10, Wheels 3 and 4 for moving the vehicle 10, a driving device 5 for rotating the wheels 3 and 4, a door 6 for shielding the interior of the vehicle 10 from the outside, And side mirrors 7 and 8 that provide a view of the rear of the vehicle 10.

The front glass 2 is provided on the front upper side of the main body 1 so that a driver inside the vehicle 10 can obtain time information in front of the vehicle 10. The windshield glass is also called a windshield glass.

The wheels 3 and 4 include a front wheel 51 provided on the front side of the vehicle 10 and a rear wheel 52 provided on the rear side of the vehicle 10. The driving device 5 includes a main body 1, Or the rear wheel 51 or the rear wheel 52 so as to move backward. Such a drive unit 5 may employ an engine for generating a rotational force by burning fossil fuel or a motor for generating a rotational force by receiving power from a capacitor (not shown).

The door 6 is rotatably provided on the left and right sides of the main body 1 so that the driver can ride on the inside of the vehicle 10 at the time of opening the door 10 and the inside of the vehicle 10 can be shielded from the outside . The door (6) may be provided with a window for viewing the outside or for viewing the outside. According to the embodiment, the window may be provided so that it can be viewed only from one side, or it may be provided so as to be openable and closable.

The side mirrors 7 and 8 include a left side mirror 7 provided on the left side of the main body 1 and a right side mirror 8 provided on the right side. Side information and rear-side time information.

Next, the internal structure of the vehicle 10 provided with the airbag device according to one embodiment will be described.

FIG. 2 is an exploded view showing a crash pad for a vehicle having an airbag device according to an embodiment, FIG. 3 is a cross-sectional view showing a part of a crash pad for a vehicle having an airbag device according to an embodiment, 1 is a cross-sectional view showing the structure of an airbag device according to an embodiment.

2 to 4, the airbag device 30 may be installed on the rear surface of the crash pad 20. [ The airbag device 30 may be formed independently from the crash pad 20, and may be integrally formed according to the embodiment. When the crash pad 20 and the airbag device 30 are integrally formed, the airbag door 34 can be formed by the tear line 21 previously formed in the crash pad 20. Hereinafter, embodiments of the present invention will be described on the assumption that the crash pad 20 and the airbag device 30 are integrally formed.

Referring to FIGS. 2 and 3, the crash pad 20 may include a core portion 22, a skin 24, and a foam 26.

The core portion 22 forms the front of the driver's seat and the front passenger's seat. The core portion 22 may be formed of a material having sufficient rigidity so as to protect passengers in the passenger compartment from an external impact at the time of collision or rollover of the vehicle 10. [ The core portion 22 is formed with an insertion hole 23 in which the airbag device 30 is mounted and has a first mounting portion 25 for inserting electronic devices such as air conditioners, AVN devices, May be formed.

The skin 24 is disposed on the outer side of the core portion 22 so as to face the core portion 22. The skin 24 may be made of a soft material to smoothly form the inner surface of the vehicle 10, unlike the material of the core portion 22 having rigidity.

The skin 24 is provided with a second mounting portion 28 formed in correspondence with the first mounting portion 25 and the air conditioning apparatus, the AVN apparatus, the control button, and the like can be mounted on the first and second mounting portions 25 and 28 .

In one region of the skin 24, a tear line 21 may be formed which is cut so that the airbag cushion 32 protrudes when the vehicle 10 collides. The tear line 21 is formed in the shape of a tear line 21 with the line formed so that the airbag cushion 32 is deployed so as to mitigate the accidental impact of the passenger.

A foam 26 may be injected between the core 22 and the skin 24. The foam 26 minimizes the injury of the passenger by minimizing the force transmitted to the passenger by absorbing the impact when the vehicle 10 crashes or overturns.

The crash pad 20 may be provided with an airbag device 30 which may include an airbag housing 31, an airbag door 34 and a hinge 36. [

The airbag housing 31 is provided to receive the inflator 35 and the airbag cushion 32 therein by forming a lower frame of the airbag apparatus 30. [

The inflator 35 allows the airbag cushion 32 to be deployed by ejecting gas when the vehicle 10 is subjected to an impact exceeding a predetermined range.

The airbag cushion 32 is accommodated inside the airbag housing 31 and then quickly deployed to the passenger side of the vehicle 10 by the gas pressure supplied from the inflator 35 to safely protect the passenger.

The airbag housing 31 is provided with a front opening to provide a space in which the airbag cushion 32 can be deployed. The tear line 21 of the skin 24 described above is disposed on the front surface of the airbag housing 31 and the airbag door 34 is opened while the tear line 21 is cut when an impact is applied to the vehicle 10. [ And at the same time, the airbag cushion 32 accommodated in the airbag housing 31 is protruded toward the passenger.

The airbag door 34 is configured to open the front surface of the airbag housing 31 in accordance with the extent to which the airbag cushion 32 is deployed when the vehicle 10 is subjected to impact exceeding a predetermined range, So that the front surface of the airbag housing 31 can be opened.

The hinge 36 may be formed by a fabric 40 for an airbag connecting the airbag housing 31 and the airbag door 34 to a point connecting the airbag housing 31 and the airbag door 34.

In general, when an impact is applied to the vehicle 10 and the airbag door 34 is momentarily opened, an excessive impact is applied to the hinge 36 as the airbag door 34 rotates. In the published invention, A high elongation and high stiffness fiber-based airbag fabric 40 is applied to the hinge 36 so as to withstand excessive impact applied to the airbag 36.

If there is no clearance in the hinge 36 when the airbag door 34 of the airbag device 30 is opened, there is interference between the material of the crash pad 20 and the airbag door 34 at the portion where the door is folded, A part of the material of the crush pad 20 may be scattered.

In the disclosed invention, a free stretchable section is formed between the airbag housing (31) and the airbag door (34) in response to this problem, so that free stretching of the high elongation fiber is possible for the impact applied in the longitudinal direction of the high elongation fiber Respectively. In this specification, the free-stretchable section is defined as a section in which the airbag door 34 is exposed at the connecting portion of the airbag housing 31 and the airbag door 34 so as to be freely stretchable. In the free stretch section, The high elongation fiber is extended and defined as the section formed.

Before describing the structure of the hinge 36 of the airbag device 30, the structure of the airbag fabric 40 according to the invention disclosed in the following description will be described.

FIG. 5 is a view showing the structure of a fabric for an airbag according to an embodiment, and FIG. 6 is a view showing a structure of a fabric for an airbag deformed by an impact applied in a direction D1 shown in FIG.

5, the fabric 40 for an airbag according to an embodiment includes a high-stiffness fiber 40E and a high-stiffness fiber 40B having a structure that is wound in the longitudinal direction of the spiral axis of the high- (40S) may be formed by weaving. The unit body of the airbag fabric 40 may include a plurality of unit pieces to form a subunit, and the subunit may have a structure connected by the high stiffness fibers 40S.

The characteristics of the high elongation fiber 40E and the high stiffness fiber 40S applied to the airbag fabric 40 according to the disclosed invention are as follows.

First, the high elongation fiber 40E may comprise a denier having a range of 200 to 2000 g / 9000 m. If the denier is less than 200 g / 9000 m, the connectivity of the woven materials may be lowered. If the denier is more than 2000 g / 9000 m, the ratio of the high stiffness fibers (40S) may be lowered in all materials. Thus, it may be desirable to properly adjust the denier range of the high elongation fiber 40E.

In addition, the high elongation fibers 40E may comprise those having a tensile strength in the range of 0.5 to 6 gf / de, and may include those having elongation in the range of 30 to 500%. If the elongation is less than 30%, if the fabric woven with the high elongation fibers 40E is applied to the airbag hinge 36, it may be difficult to obtain the free stretch zone required when the airbag door 34 is opened, It may be difficult to prevent the air bag door 34 from diverging. Accordingly, it is desirable to appropriately adjust the elongation range of the high elongation fiber 40E.

As the type of the high elongation fiber 40E, elastomer fiber can be used. The kind of the elastomeric fiber used in the present invention is not limited to this, but may be any one selected from the group consisting of silicone, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), tetrafluoroethylene-perfluoroalkylvinyl copolymer (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), and the like.

Next, the high-stiffness fibers 40S may include those having a denier in the range of 200 to 2000 g / 9000 m. If the denier is less than 200 g / 9000 m, the connectivity of the woven materials may be lowered. If the denier is more than 2000 g / 9000 m, the proportion of the high elongation fiber (40E) Accordingly, it is preferable to appropriately adjust the denier range of the high-stiffness fibers 40S.

Further, the high-stiffness fibers 40S may include those having a tensile strength in the range of 6 to 18 gf / de and may include those having an elongation of 20% or less. If the tensile strength is less than 6 gf / de, it may be difficult to prevent the divergence of the airbag door 34, and if the elongation is more than 20%, the resistance to tensile force is significantly reduced and it is difficult to effectively prevent the divergence of the airbag door 34 . Therefore, it is desirable to appropriately adjust the tensile strength and elongation range of the high-stiffness fiber 40S.

Examples of the high stiffness fiber 40S include polyethyleneterephthalate (PET) fiber, aramid fiber, amide fiber, and the like. However, examples of the type of high stiffness fibers (40S) that can be used are not limited thereto.

When an impact is applied to the airbag fabric 40 having the structure as shown in FIG. 5 in the longitudinal direction (D1 direction in FIG. 5) of the high elongation fiber 40E, the high elongation fiber 40E is broken. When the high elongation fiber 40E is broken, the high elongation fiber 40S spread on the high elongation fiber 40E is unfolded and the stretching stretching section L1 as shown in FIG. 6 can be formed. Here, the tensile elongation period L1 means a section formed by unfolding the high-stiffness fibers 40S as the high-elongation fibers 40E are broken.

The present invention is applied to the airbag hinge 36 by applying the fabric 40 for the airbag in which the tensile stretching section L1 is formed by the high stiffness fibers 40S at the time of breaking the high elongation fiber 40E as the material of the airbag hinge 36 30), it is possible to reduce the cost and improve the productivity. Hereinafter, the manner in which the above-described airbag fabric 40 is applied to the hinge 36 of the airbag device 30 will be described with reference to the accompanying drawings.

7 is a view showing a state in which the airbag door 34 of the airbag apparatus 30 according to the embodiment is closed and Fig. 8 is a view showing the state where the airbag door 34 of the airbag apparatus 30 according to the embodiment is opened Fig.

7, the airbag fabric 40 may be provided such that one end of the fabric 40 for the airbag is coupled to the airbag housing 31 and the other end is coupled to the airbag door 34. As shown in Fig. The fabric 40 for the airbag can be combined with the material of the airbag housing 31 and the material of the airbag door 34 by an insert injection molding process. However, the manner of combining the airbag fabric 40 and the material of the airbag housing 31 or the material of the airbag door 34 is not limited thereto.

The portion to which the airbag housing 31 and the airbag door 34 are connected by the airbag fabric 40 can function as the hinge 36 when the airbag door 34 is opened. For this purpose, the airbag fabric 40 may be arranged such that the direction of rotation of the hinge 36 and the longitudinal direction of the high-elongation fibers 40E included in the airbag fabric are oriented vertically. Fig. 7 is a front view of the airbag door 34, in which case the fabric 40 for an airbag may be in the structure according to Fig.

As shown in Fig. 8, when the airbag door 34 is opened, tensile force is applied in the longitudinal direction of the high elongation fiber 40E included in the fabric 40 for the airbag. In this case, the high-elongation fiber 40E is broken after a predetermined stretch, and the high-stiffness fiber 40S wound on the high elongation fiber 40E is stretched to secure the stretching stretch L1 and serve as the hinge 36 .

Fig. 8 is a view after opening the airbag door 34, in which case the fabric 40 for the airbag may have the structure of Fig. The tensile elongating section L1 formed by the high stiffness fibers 40S serves to absorb the airbag deployment energy so that the airbag door 34 is no longer diverted and securely fix the airbag door 34 .

Hereinafter, in order to facilitate the understanding of the present invention, description will be given of results of physical property evaluation and peel test of the airbag fabric 40 applied to the hinge 36 of the airbag device 30 according to the published invention .

First, specimens according to [Example 1], [Comparative Example 1] and [Comparative Example 2] were prepared for evaluating the physical properties of the airbag fabric 40 applied to the hinge 36 of the airbag device 30. [

[Example 1]

Elastomer fiber having a denier of 1000 g / 9000 m, a tensile strength of 1 gf / de and a elongation of 200% was used as the high elongation fiber 40E and a denier was used as the high stiffness fiber 40S. A fabric 40 for airbags was fabricated using PET fibers having a tensile strength of 1300 g / 9000 m, a tensile strength of 9 gf / de and an elongation of 15%.

[Comparative Example 1]

Polyvinyl chloride (PVC) was coated on the PET fiber to fabricate a mesh type fabric.

[Comparative Example 2]

Polyurethane (PU) coating was applied to the PET fibers to prepare a fabric specimen having a mesh shape.

The physical properties of the test specimens according to Example 1, Comparative Example 1 and Comparative Example 2 are shown in Table 1 below.

division [Example 1] [Comparative Example 1] [Comparative Example 2]

Tensile strength (N / cm) 180 135 580 Elongation (%) 190-200 16 18 Toughness (N) 5,400 1,244 9,940

As a result of tensile evaluation of the fabric 40 for an airbag according to [Example 1], it was confirmed that a total elongation of about 190 to 200% was exhibited as free stretching at about 120% and stretching at about 70 to 80%.

In comparison, it was confirmed that the physical properties of the test specimens according to [Comparative Example 1] and [Comparative Example 2] exhibited a tensile modulus of about 16 to 18%.

Since the material having a low tensile rate needs to be fixed to the mold by overlappingly folding it in order to avoid interference between the airbag door 34 and the crash pad 20 during the initial deployment of the airbag device 30, It is possible to omit a separate bonding process or the like in the case of applying the airbag fabric 40 according to the invention disclosed in the hinge 36 of FIG.

Next, in order to verify the insert formability of the crash pad 20 of the material for airbag according to the published invention, a 180-degree fill test specimen was fabricated using a flat mold.

More specifically, after fixing the fabric 40 for the airbag to the mold, 50% of the fabric 40 for the airbag was covered with the release film and fixed to the mold, and then the mold was closed. Next, injection molding was performed using the material of the crash pad 20, and the injection temperature was maintained at 200 ° C. Next, after removing the release film, the non-impregnated portion was used as a grip portion in the peel test.

FIG. 9 shows a manufactured test piece for peeling test. Referring to FIG. 9, a portion of the test specimen corresponds to the impregnation portion, and the remaining portion corresponds to the non-impregnated portion. And a portion of the non-impregnated portion corresponds to the grip portion in the fill test.

The peel test specimens were prepared using the physical specimens prepared by the method according to Example 1, Comparative Example 1 and Comparative Example 2, and the peel test results according to each case are shown in Table 2 below ].

division [Example 1] [Comparative Example 1] [Comparative Example 2]

Max load (N) 65 41 33 Average load (Ave load, N) 53 25 20 Failure mode Structural break
(Structural failure) Interface break
(Interface failure) Interface break
(Interface failure)

Referring to [Table 2], it was confirmed that the airbag fabric 40 according to [Example 1] had excellent insert moldability compared to the existing materials.

More specifically, as a result of the fill test of the fill test specimen fabricated using the air bag fabric 40 according to [Example 1], the air bag fabric 40 according to [Example 1] The maximum load value and the average load value were both high, and as a result, it was confirmed that the adhesive property was excellent compared with the existing materials.

It was confirmed that the crash pad 20 was melted in the development material and interlocking occurred due to mechanical interlocking during injection molding. In the case of the material according to [Comparative Example 1] and [Comparative Example 2], breakage occurs at the bonding interface between the material and gold foil, while in the case of the material according to [Example 1] .

The embodiments disclosed with reference to the accompanying drawings have been described above. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. The disclosed embodiments are illustrative and should not be construed as limiting.

10: Vehicle
20: Crash Pad
30: airbag device
40: Airbag fabric
40S: high stiffness fiber
40E: high elongation fiber
L1: Tensile stretching section

Claims (18)

High elongation fibers; And
And high rigidity fibers having a structure in which the high elongation fibers are wound in a direction of a spiral axis in the longitudinal direction of the high elongation fibers. The method according to claim 1,
A plurality of the unit bodies are provided to form subunits,
The sub-
Wherein the sub-units have a structure connected by the high-stiffness fibers. The method according to claim 1,
The fabric for an air bag,
Wherein the high elongation fiber is formed so that when the high elongation fiber is broken by the impact applied in the longitudinal direction of the high elongation fiber, the highly rigid fiber curled on the high elongation fiber is unfolded to form a stretching stretching section. The method according to claim 1,
Wherein the high elongation fibers have a denier in the range of 200 to 2000 g / 9000 m. The method according to claim 1,
Wherein the high elongation fibers have a tensile strength in the range of 0.5 to 6 gf / de. The method according to claim 1,
Wherein the high elongation fiber has an elongation in the range of 30 to 500%. The method according to claim 1,
Wherein the high elongation fibers are provided with elastomeric fibers. The method according to claim 1,
Wherein the high stiffness fibers have a denier in the range of 200 to 1500 g / 9000 m. The method according to claim 1,
Wherein the high stiffness fibers have a tensile strength in the range of 6 to 18 gf / de. The method according to claim 1,
Wherein the high stiffness fibers have an elongation in the range of 20% or less. Airbag housing;
An airbag cushion housed in the airbag housing;
An airbag door that opens and closes the airbag housing; And
And a hinge formed by a fabric for an airbag connecting the airbag housing and the airbag door,
The fabric for an air bag,
And a high-stiffness fiber having a high-elongation fiber and a high-stiffness fiber wound in a longitudinal direction of the spiral axis of the high-elongation fiber. 12. The method of claim 11,
The fabric for an air bag,
Wherein the high-elongation fibers are arranged so that the rotation axis direction of the hinge and the longitudinal direction of the high-elongation fibers are oriented in the vertical direction. 13. The method of claim 12,
And a free stretchable section between the airbag housing and the airbag door such that free stretching of the high elongation fiber is possible for impact applied in the longitudinal direction of the high elongate fiber. 12. The method of claim 11,
The fabric for an air bag,
Wherein the airbag housing material and the airbag door material are combined by an insert injection molding method. 12. The method of claim 11,
The fabric for an air bag,
And a sub-unit formed by providing a plurality of the unit bodies,
The sub-
Wherein the sub-units are connected by the high-rigidity fibers. 16. The method of claim 15,
The fabric for an air bag,
Wherein the high elongation fiber is stretched when the high elongation fiber is broken by an impact applied in the longitudinal direction of the high elongation fiber so as to form a tensile stretching section. 12. The method of claim 11,
The high-
The denier has a range of 200 to 2000 g / 9000 m,
A tensile strength of 0.5 to 6 gf / de,
And an elongation of 30 to 500%. 12. The method of claim 11,
The high-
The denier has a range of 200 to 1500 g / 9000 m,
A tensile strength in the range of 6 to 18 gf / de,
And an elongation of 20% or less.

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