WO2015129684A1

WO2015129684A1 - Woven fabric, and airbag

Info

Publication number: WO2015129684A1
Application number: PCT/JP2015/055227
Authority: WO
Inventors: 田中伸明; 土倉弘至
Original assignee: 東レ株式会社
Priority date: 2014-02-28
Filing date: 2015-02-24
Publication date: 2015-09-03
Also published as: JPWO2015129684A1

Abstract

The present invention addresses the problem of providing a woven fabric in which the incidence of selvage sagging and the retraction of weaving sheds at selvage edge parts are reduced using an effective and inexpensive means. The present invention is a woven fabric having the following characteristics. (i) The length X1 of the widthwise center section of a strip body (L1) in the warp direction is 505.5-512.5 mm. (ii) The length Y1 of the widthwise center section of a strip body (R1) in the warp direction is 505.5-512.5 mm. The strip body (L1) is obtained by cutting a region bounded by two lines (103A, 103B) that extend along weft yarns passing through two points (102A, 102B) that are present in the widthwise center of the woven fabric and have a vertical spacing of 500 mm, the end part (101A) of the woven fabric on the weft-yarn nozzle side, and a straight vertical line (104A1) located 20 mm towards the widthwise center from the side end part. The strip body (R1) is obtained by cutting a region bounded by two lines (103A, 103B) that extend along the weft yarns, the end part (101B) of the woven fabric opposite the weft-yarn nozzle side, and a straight vertical line (104B1) located 20 mm towards the widthwise center from the side end part.

Description

Textiles and airbags

The present invention relates to a woven fabric. More specifically, the present invention relates to a fabric that effectively suppresses the occurrence of ear sagging that occurs in the vicinity of the ear portion when weaving a high-density fabric, particularly a high-density fabric for an airbag.

The car is equipped with an airbag to ensure the safety of passengers.

In the event of a car crash, the airbag is activated by a sensor that activates the sensor and generates a high-temperature, high-pressure gas inside the airbag. Protects the face and forehead.

Air bags are generally used to improve the properties of heat resistance, flame retardancy, air-blocking properties, etc. to fabrics made of plain fabrics using nylon 6-filament yarns of 100 to 1000 dtex or nylon 6/6 filament yarns. It is made by manufacturing a base fabric on which a resin such as silicone is applied or laminated, cutting it, and sewing it to a bag.

Further, there is a so-called non-coated cloth that is used by reducing the air flow rate of the fabric by weaving synthetic fiber filament yarn such as polyamide fiber or polyester fiber with high density without applying resin.

Here, airbag fabrics must have high strength and low breathability because they instantly inflate the airbag in the event of a car crash and protect the occupant's face and forehead in the event of a crash. It is what is done.

For this reason, it is becoming necessary for the fabric for the airbag to use higher strength yarns and to be a high-density fabric compared to the fabric for ordinary clothing.

JP-A-9-302549 Japanese Patent Laid-Open No. 9-302550 JP-A-10-236253

In general, when weaving a high-density fabric, the amount of movement of the weaving port before weaving from the advance position of the reed to the warp yarn sending side increases as the density increases, for example, in the case of a plain weave structure with a large cover factor. Due to the increase, the following inconvenience occurs.

Here, the cover factor is the total warp fineness D ₁ (dtex), the warp density N ₁ (lines / 2.54 cm), the total weft fineness D ₂ (dtex), and the weft density N ₂ (lines / 2 .54 cm), it is represented by (D ₁ ) ^1/2 × N ₁ + (D ₂ ) ^1/2 × N ₂ .

(A) At the time of hammering, the fabric in the vicinity of the weave causes a bumping phenomenon, making it difficult to obtain a fabric having a desired weft density.

(B) When the left and right ends before weaving are cut with a cutter after the wefts have been driven in, the cut wefts have low tension, so the weft crimps at both ears of the fabric increase, Conversely, since the warp crimp at the ear is small, the warp tension at both ears is reduced. As a result, fluff caused by warp looseness in the ear part is induced, and it becomes impossible to stably weave.

(C) When the rotational speed of the loom is increased, the phenomenon in which the amount of movement of the ear weaving mouth to the warp feeding side becomes larger than the advancement position of the heel appears more remarkably. The warp looseness of the ear part causes a difference in the length of the cloth between the ear part and the center part, and the wavy phenomenon of the ear part, so-called ear sagging (also called “ear slack” or “ear fluttering” in Japanese) appears. . The woven fabric is formed into a desired product by cutting and sewing. In order to make maximum use of the woven fabric, it is usually used up to or near the ear of the woven fabric. Since the edge of the cut product is easily frayed, if there is an ear slack in the vicinity of the ear portion, a cutting defect occurs, and the shape as a product cannot be ensured or the function is not exhibited.

(D) Ear sagging in the raw machine not only affects the process passability in roll winding, scouring and setting processes, but also causes wrinkles.

As a technique for suppressing the occurrence of slack in the ear, a method of making the woven density of the woven fabric ear part higher than the woven density of the main part of the woven fabric (Patent Document 1), Patent Document 2), a method of making the warp denier of the ear part thinner than the warp denier of the ground body part (Patent Document 3) is known, but it cannot always be said that the occurrence of ear sagging can be sufficiently suppressed. .

In view of the above-mentioned drawbacks of the prior art, the present invention effectively suppresses the occurrence of sagging ears, suppresses the occurrence of wrinkles at the end when making a long fabric, and suppresses misalignment during cutting. The issue is to provide.

In order to solve the above problems, the present invention has the following configuration.
<First invention>
A fabric having the following characteristics:
(1-1) The length X1 in the warp direction of the center portion in the width direction of the strip L1 is 505.5 to 512.5 mm.
(1-2) The length Y1 in the warp direction of the central portion in the width direction of the strip R1 is 505.5 to 512.5 mm.
Here, the strip L1 has two points (102A, 102B) that exist in the center in the width direction of the woven fabric and have an interval of 500 mm in the warp direction, and two lines (103A, 102A) along the weft passing through the respective points. 103B), a weft weft nozzle side end portion (101A), and a warp direction line (104A1) located 20 mm from the side end side in the width direction center side,
The strip R1 includes two lines (103A, 103B) along the weft, a fabric anti-weft nozzle side end (101B), and a warp direction line located 20 mm from the side end in the center in the width direction. (104B1) and obtained by cutting.

And, as preferred embodiments of the above invention, there are the following.

<Second invention>
Furthermore, the said woven fabric which has the following characteristics.
(2-1) The length X2 in the warp direction of the central portion in the width direction of the strip L2 is 504.5 to 508.5 mm.
(2-2) The length Y2 in the warp direction of the central portion in the width direction of the strip R2 is 504.5 to 508.5 mm.
Here, the strip L2 is cut along a line (104A2) in the warp direction located 20mm from the position where the strip L1 is cut and two lines (103A, 103B) along the weft. It was obtained by
The strip R2 is obtained by cutting along the warp direction line (104B2) located 20 mm from the center of the strip R1 and the two lines (103A, 103B) along the weft. It is a thing.

<Third invention>
Further, any one of the above woven fabrics having the following characteristics.
(3-1) The length X3 in the warp direction of the central portion in the width direction of the strip L3 is 502.0 to 505.0 mm.
(3-2) The length Y3 in the warp direction of the central portion in the width direction of the strip R3 is 502.0 to 505.0 mm.
Here, the strip L3 is cut along a warp direction line (104A3) located 20 mm from the center where the strip L2 is cut and two lines (103A, 103B) along the weft. It was obtained by
The strip R3 is obtained by cutting along the warp direction line (104B3) located 20 mm from the center of the strip R2 and the two lines (103A, 103B) along the weft. It is a thing.

<Fourth Invention>
Further, any one of the above woven fabrics having the following characteristics.
(4-1) The length X4 in the warp direction of the center portion in the width direction of the strip L4 is 501.0 to 502.5 mm.
(4-2) The length Y4 in the warp direction of the central portion in the width direction of the strip R4 is 501.0 to 502.5 mm.
Here, the strip L4 is cut along a line (104A4) in the warp direction located 20mm from the position where the strip L3 is cut and two lines (103A, 103B) along the weft. It was obtained by
The strip R4 is obtained by cutting along a warp direction line (104B4) located 20 mm from the center of the strip R3 and two lines (103A, 103B) along the weft. It is a thing.

<Fifth invention>
Further, any one of the above woven fabrics having the following characteristics.
(5-1) The length X5 in the warp direction of the central portion in the width direction of the strip L5 is 500.0 to 501.0 mm.
(5-2) The length Y5 in the warp direction of the central portion in the width direction of the strip R5 is 500.0 to 501.0 mm.
Here, the strip L5 is cut along a line (104A5) in the warp direction located 20mm from the position where the strip L4 is cut and two lines (103A, 103B) along the weft. It was obtained by
The strip R5 is obtained by cutting along the warp direction line (104B5) located 20 mm from the center of the strip R4 and the two lines (103A, 103B) along the weft. It is a thing.
<Sixth Invention>
Any one of the above woven fabrics, wherein the total fineness of the warp and the weft is 150 to 700 dtex.
<Seventh Invention> The fabric according to any one of the above, wherein the width of the fabric is 140 cm or more.

The airbag of the present invention is an airbag using any one of the above-mentioned fabrics.

According to the first invention, in the woven structure in the range of 0 to 20.0 mm from both sides of the woven fabric, the weft and the warp are satisfactorily maintained, and the occurrence of the weft crimp is prevented to prevent the warp from loosening. By effectively suppressing the ear sag and controlling to a specific range, it is possible to provide a woven fabric that suppresses the occurrence of wrinkles at the end when it is a long fabric and also suppresses the positional deviation at the time of cutting.

According to the second aspect of the invention, even in a woven structure in the range of 20 to 40.0 mm from both sides of the woven fabric, the weft and the warp are better maintained in the entangled state, and the occurrence of the weft crimp can be prevented. The present invention provides a woven fabric that prevents warp loosening, effectively suppresses loosening of the ears, suppresses wrinkles at the end of a long fabric, and suppresses misalignment during cutting.

According to the third aspect of the invention, even in a woven structure in the range of 40.0 to 60.0 mm from both sides of the woven fabric, the weft and the warp are more satisfactorily maintained to prevent the occurrence of the weft crimp. In addition, there is provided a woven fabric that can prevent warp loosening, effectively suppress ear slack, suppress wrinkles at the end of a long fabric, and suppress misalignment during cutting.

According to the fourth aspect of the invention, even in a woven structure in the range of 60.0 to 80.0 mm from both sides of the woven fabric, the weft and the warp are maintained in a more favorable entangled state, and the generation of the weft crimp is prevented. Provided is a woven fabric that can prevent warp loosening, effectively suppress ear slack, suppress wrinkles at the end of a long fabric, and suppress misalignment during cutting. .

According to the fifth invention, even in a woven structure in the range of 80.0 to 100.0 mm from both sides of the woven fabric, the weft and the warp are more favorably maintained in the entangled state, and the occurrence of the weft crimp is prevented. In addition, there is provided a woven fabric that can prevent warp loosening, effectively suppress ear slack, suppress wrinkles at the end of a long fabric, and suppress misalignment during cutting.

FIG. 1 is a conceptual diagram showing a method for evaluating ear sag. FIG. 2 is a schematic plan view showing the main part of the loom including the loom ear gripping device preferably used in the present invention. FIG. 3 is a schematic perspective view showing a loom ear gripping apparatus preferably used in the present invention. FIG. 4 is a schematic cross-sectional view of a loom ear gripping device using a pair of leaf springs as the ear elastic pinching member preferably used in the present invention. 5 is a schematic cross-sectional view of a loom ear gripping device using a pair of leaf springs as the ear elastic pinching member preferably used in the present invention.

As a result of intensive studies on the suppression of ear sag, the inventors of the present application have found that when weaving a high-density fabric, 0 to 20 mm, preferably 0 to 40 mm, more preferably 0 to 60 mm, more preferably 0 to 0 mm from both sides of the fabric. The inventors have found that by controlling the weft interval of the woven fabric in the range of 100 mm, it is possible to effectively suppress the occurrence of ear sagging, and have reached the present invention.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a method for evaluating an ear sag according to the present invention, in which two points are marked at the center of the fabric 10 in the width direction, that is, the

points

102A and 102B at the center of the fabric are marked. Then, two lines along the weft 5 in the direction of the weft nozzle side end 101A of the woven fabric that is both ends in the width direction from the

marks

102A and 102B of the center of each fabric, that is, the direction opposite to the weft nozzle side end 101B of the woven fabric, that is,

Draw lines

103A and 103B in the weft direction. In this case, since the entangled state of the fabric 10 tends to be looser at both ends compared to the center, the two

lines

103A and 103B are curved toward the front of the fabric at both ends as shown in FIG. In addition, the distance between two

lines

103A and 103B in the weft direction tends to be larger than the central portion. Therefore, the distance between the two weft-

direction lines

103A and 103B is 500 mm at the center of the fabric, but the fabric goes to the weft nozzle side end 101A of the fabric and the anti-weft nozzle side end 101B of the fabric. The interval between the two

lines

103A and 103B in the weft direction is increased. However, in actual use, it was found that the amount of ear slack that would cause trouble is within the range of 0 to 100 mm from both ends. There is no need to consider the spacing between the

lines

103A and 103B along.

Next, between the

lines

103A and 103B along the two wefts, a line is formed in the warp direction at intervals of 20 mm from the weft nozzle side end 101A of the fabric, which is both ends of the fabric, and the anti-weft nozzle side end 101B of the fabric. That is, the warp direction lines 104A1 to 104A5 and the warp direction lines 104B1 to 104B5 are drawn and cut along the

weft direction lines

103A and 103B, the warp direction lines 104A1 to 104A5, and the warp direction lines 104B1 to 104B5, After obtaining the strips L1 to L5 and R1 to R5, the lengths X1 to X5 in the warp direction (that is, the length direction) of the central portion of the strips L1 to L5 and the central portions of the strips R1 to R5 The ear slack can be quantitatively evaluated by measuring the lengths Y1 to Y5 in the warp direction.

The first feature of the present invention is that X1 and Y1 are set to 505.0 to 512.5 mm when the distance between the center of the fabric, that is, the distance between 102A and 102B is 500 mm. The second feature mentioned here as a preferred embodiment is that X2 and Y2 are 504.5 to 508.5 mm, and the third feature is that X3 and Y3 are 502.5 to 505.5 mm. The fourth feature is that X4 and Y4 are 501.5 to 502.5 mm, and the fifth feature is that X5 and Y5 are 500.0 to 501.0 mm. Either of these ensures the desired weft density of the fabric, suppresses the occurrence of fuzz due to warp loosening at the ears, reduces cutting defects, and passes through the process in roll winding, scouring, and setting processes. It is possible to provide a woven fabric with reduced wrinkles without causing any problems.

The distance between the two

points

102A and 102B located at the center of the woven fabric is set to 500 mm. If the dimension is too long in the warp direction, it will be difficult to measure the size of the strip, and too much in the warp direction. This is because if the dimensions are short, the influence of the dimensional measurement variation becomes large. The reason why the weft direction dimension of the strips L1 to L5 and R1 to R5 is set to 20 mm is to simplify the strip cutting operation and the measuring operation.

The woven fabric according to the present invention includes, for example, an ear portion passage space portion in which an ear portion formed by entanglement of a weft yarn and a weft yarn can pass in the feeding direction of the fabric, and a weft movement gap in which the weft yarn can move in the feeding direction of the fabric. Even when the weft is cut with a weft cutter, weaving can be performed using an ear part gripping device for a loom configured to maintain the entangled state of the ear part.

An auricle is a weft thread that protrudes from the fabric after it is cut, and a thickening is a thread that is inserted to entangle the atrium separately from the ground yarn of the fabric. It is the part where the yarn is entangled.

FIG. 2 is a schematic plan view showing an outline of weaving when the above-mentioned loom ear gripping device is installed on the weft nozzle side, where 1 is the warp, 2 is the yarn increasing, 3 is the kite, 4 is the weft nozzle, Is a weft cutter, 6 is a weft cutter, 7 is an ear gripping device for a loom, 8 is an auricle, and 9 is a bran wing. In the weaving, a plurality of warps are present on the right side of FIG. 2, and the wefts 5 and the ridges 3 are further extended, but are not shown.

The wefts 5 supplied from the weft nozzle 4 are inserted between the yarns 2 supplied from the yarn supply device (not shown) and between the plurality of warps 1 supplied from the warp supply device (not shown). Is done. The weft 5 inserted between the warps 1 is driven by the reed 3 and the reed wing 9 to form the fabric 10 and the ear part 11. The tip of the driven weft 5 is usually entangled by a catch cord (not shown) or the like, and the weft tension is maintained for a predetermined time. Thereafter, the anti-nozzle side weft cutter (not shown) is interposed between the fabric 10 and the catch cord. ) And the catch cord is collected.

The ear portion 11 in which the yarn 2 and the weft yarn 5 are entangled is supplied to the loom ear gripping device 7 without being beaten, and moves in the ear gripping device in synchronization with the movement of the fabric 10 and the ear chamber 8. To do. At this time, the weft 5 is cut by the weft cutter 6 immediately after beating. At that time, since the ear portion 11 after the weft cut is in the ear portion gripping device and the entangled state is maintained, the occurrence of the weft crimp and the warp loosening can be prevented.

The ear part 11 from which the weft has been cut is directly discharged from the ear part holding device and moves together with the fabric 10. When the ear 11 is discharged from the loom ear gripping device, the entangled state between the yarn expansion 2 and the auricle 8 is not maintained, the auricle 8 is gradually detached from the yarn expansion 2, and the yarn 2 is used alone. In addition, the fabric 10 and the ear chamber 8 move together. The increased yarn 2 is collected through a guide (not shown) on the same route as the catch cord on the side opposite to the weft nozzle (not the weft nozzle) or by another winding device.

With such a mechanism, weft crimping and warp looseness after cutting the weft does not occur, and the retreat of the weave at the end of the ear and the occurrence of sagging of the ear are effectively suppressed.

Length to grip the ears (ie, the longitudinal direction of the fabric where the ear gripping device for the loom grips the ears (the direction in which the wefts forming the ears are lined up) (Hereinafter referred to as “ear part gripping length”) is preferably 2 to 15 mm, and more preferably 3 to 10 mm. By setting it in this range, high tension can be maintained even if the weft is cut after beating, and the woven fabric structure can be stabilized.

The width for gripping the ear part (that is, the length in the direction perpendicular to the longitudinal direction of the fabric where the ear part gripping device for a loom grips the ear part (the direction in which the yarns forming the ear part are arranged). It is preferably a width capable of gripping the entire ear portion, and a width capable of maintaining a high tension so as to stabilize the fabric structure even after the weft is cut after the beating. If it is, it will not be restricted to the above.

In the figure, the loom ear gripping device is disposed only on the weft nozzle side of the fabric 10, but may also be disposed on the anti-weft nozzle side. When the loom ear gripping device is disposed on the side of the anti-weft nozzle, it is preferably provided between the fabric and the weft cutter on the side of the anti-weft nozzle. At that time, as with the weft nozzle side, the yarns are aligned on the anti-weft nozzle side of the fabric, forming an ear portion entangled with the driven weft yarn, and an ear gripping device for a loom is provided in the vicinity of the ear portion before weaving. More preferably, the loom ear gripping device on the weft nozzle side and the loom ear gripping device on the anti-weft nozzle side face each other through the fabric so that the weft tension is most maintained. Arrange.

FIG. 3 is an enlarged schematic perspective view when the above-mentioned loom ear gripping device 7 is installed on the weft nozzle 4 side, where 1 is a warp yarn, 2 is a reinforcing yarn, 4 is a weft nozzle, 5 is a weft yarn, and 8 is an auricle. 10 is a fabric, and 11 is an ear. The fabric 10 is fed from the upper right side of the drawing to the lower left side of the drawing. The loom ear gripping device 7 is preferably provided at least on the weft nozzle side of the fabric 10, but in addition to this, it is preferably provided on the anti-weft nozzle side.

The loom ear gripping device 7 includes an ear portion passing space portion outlet 71 </ b> B through which an ear portion 11 entangled with the yarn 2 and the weft yarn 5 can pass in the feeding direction of the fabric 10, and the loom ear gripping device. It includes an inlet 71A (not shown) of an ear portion passage space formed on the upstream side of the yarn increase 2 of the device 7. 72B is a fabric side ear moving gap for moving the auricle 8 parallel to the delivery direction of the fabric 10, and a weft nozzle side moving gap 72A (not shown) is provided on the weft nozzle side of the loom ear gripping device 7. Is formed.

The ear portion 11 enters the ear portion passage space portion from the inlet portion 71A of the ear portion passage space portion along the feeding direction of the fabric 10, and the ear chamber 8 has a nozzle side ear portion movement gap portion 72A and a fabric side ear portion movement gap portion 72B. It is gripped by gripping means such as

leaf springs

74A and 74B (FIG. 4) provided therebetween, and moves in the ear portion passage space in parallel to the feeding direction of the fabric 10, but the weft 5 is the weft nozzle 4 and the loom ear. The loom ear gripping device 7 is configured to maintain the entangled state of the ear portion even when it is cut with the gripping device 7 by a weft cutter.

As a method of maintaining the entangled state of the ear part 11 in the ear part gripping device for a loom, the ear part passing space part is formed by a slidable member that does not disturb the movement of the ear part, and the ear part 11 is gripped. In order to be able to do so, a method of appropriately setting the ear part passage space size according to the ear part size may be employed.

In addition, the method of arranging an ear elastic holding member for elastically holding the ear in the ear passing space of the loom ear gripping device is simpler and more reliable. In this case, as the ear elastic holding member, a rubber plate or a resin plate subjected to low friction processing is used, or a metal plate fixed in the ear passing space through an elastic member such as a coil spring or rubber is used. However, it is advantageous in terms of structure and simplicity, that is, cost, to use a fixed leaf spring in the ear portion passage space.

FIG. 4 is a schematic cross-sectional view of a loom ear gripping device using a pair of

leaf springs

74A and 74B as the ear elastic pinching members, and corresponds to the case where the weft 5 is cut in the orthogonal plane in FIG. To do.

The ear 11 moves from the right side of the drawing to the left side, that is, from the inlet 71A of the ear part passing space part to the outlet 71B of the ear part passing space part in a state where the yarn 2 and the weft 5 are entangled. 74A and 74B are a pair of holding members such as a pair of carbon steel leaf springs in the ear part passage space part, and are fixed to the upper and lower wall surfaces of the ear part passage space part by two bolts 73, respectively. Even when the

leaf springs

74A and 74B sandwich the ear portion 11 in the ear portion passage space portion from the upper and lower surfaces, and the weft yarn 5 is cut between the weft nozzle 4 and the loom ear gripping device 7, The cut weft 5 is prevented from slipping out or loosening from the ear 11, and the ear 11 is in the loom ear gripping device 7 and maintains its entangled state. When the ear part 11 moves in the ear part passage space part, is discharged from the ear part gripping device 7 for looms, and the fabric 10 moves together with the auricle 8, the entangled state between the yarn 2 and the cut auricle 8 is loosened, As described above, the cut ear chamber 8 is gradually separated from the yarn 2 and the yarn 2 is singly separated from the fabric 10 and the ear chamber 8.

The leaf springs are not necessarily configured as a pair, and may be a single leaf spring disposed on the upper (or lower) wall surface and below (or above) the ear passage section. Various types of leaf springs can be used, but in order to hold the ear portion with a uniform stress over a certain length, as shown in FIG. It is preferable to use a pair of leaf springs provided. The length and width of the flat plate portion and the thickness of the leaf spring material were discharged from the loom ear gripping device 7 in consideration of the number and thickness of the yarns constituting the ear portion, the thickness of the ear portion, and the like. What is necessary is just to set suitably so that the entangled state of an ear | edge part may be maintained to such an extent that the weft crimp after a weft cut and warp looseness do not arise in an ear | edge part. Further, the material is not limited to carbon steel, and stainless steel, phosphor bronze, beryllium copper, resin, and the like can also be employed.

FIG. 5 is a schematic cross-sectional view of the loom ear gripping device 7 shown in FIG. 4 cut along a surface orthogonal to the feeding direction of the yarn 2. In this figure, the weft nozzle side ear moving gap 72A is a weft moving gap for moving the weft on the weft nozzle side (before and after cutting) together with the ear, and the fabric side ear moving gap 72B is inserted. It is an ear | edge part movement space | gap for the weft 5 to move in the delivery direction of the fabric 10. The weft nozzle side ear moving gap 72A and the fabric side ear moving gap 72B adjust the gap so that the weft passes but does not pass through the entangled portion (that is, the ear) of the entangled yarn and weft. Has been. Therefore, even when the weft is cut on the weft nozzle side, the entangled state is maintained, and no weft crimp is generated due to removal or loosening of the cut weft, and no atrial settling occurs due to warp looseness.

The fabric according to the present invention is particularly useful for high-density fabrics for airbags, but is not limited thereto.

There are no particular restrictions on the warp and weft yarns used in the fabric of the present invention, and chemical fibers, natural fibers, and the like can be used. Examples of chemical fibers include polyamide fibers, polyester fibers, aramid fibers, rayon fibers, polysulfone fibers, ultrahigh molecular weight polyethylene fibers, and natural fibers such as cotton, hemp, silk, and wool. However, when weaving a high-density fabric, chemical fibers are preferable, and polyamide fibers and polyester fibers excellent in mass productivity and economy are preferable. Polyamide fibers are preferable from the viewpoint of heat resistance and fluff products. More preferred are fibers.

Examples of polyamide fibers include nylon 6, nylon 66, nylon 12, nylon 46, copolymer polyamide of nylon 6 and nylon 66, and copolymer obtained by copolymerizing nylon 6 with polyalkylene glycol, dicarboxylic acid, amine, and the like. Mention may be made of fibers made of polyamide or the like. Examples of the polyester fiber include fibers made of polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, and the like. It may be a fiber made of a polyester copolymer 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.

In addition, these synthetic fibers have a heat stabilizer, an antioxidant, a light stabilizer, a smoothing agent, an antistatic agent, a plasticizer, in order to improve productivity in spinning / drawing process and processing process, or characteristics. Additives such as thickeners, pigments, and flame retardants may be included.

Also, as the fiber form, multifilament yarn is preferably used in that the effect of the present invention is remarkably exhibited.

Furthermore, the cross-sectional shape of the single yarn is not limited to a round shape, and may be any shape. For example, a left-right asymmetric type such as a flat shape, a rectangular shape, a rhombus shape, and a saddle shape, a left-right asymmetric type, or a combination type thereof may be used. Furthermore, there may be protrusions, irregularities, and hollow fibers.

The multifilament yarn used in the woven fabric according to the present invention preferably has a total fineness of 150 to 700 dtex in order to ensure the mechanical properties required for the airbag, particularly excellent tensile strength and tear strength, and 175 to 560 dtex. It is preferable that By using a multifilament yarn having a total fineness of 150 dtex or more, it is easy to obtain sufficient strength as a fabric for an airbag, and by making it 700 dtex or less, flexibility as an airbag fabric is improved and folding is possible. Storage and assembly workability at the time are improved, which is preferable. The single fiber fineness is preferably 2.5 to 7 dtex. The single fiber fineness is more preferably 2.8 to 6.8 dtex, still more preferably 3 to 6.6 dtex. By setting the single fiber fineness in the low range as described above, an effect of reducing the rigidity of the synthetic fiber filament is obtained, and the flexibility of the fabric is improved, which is preferable. Moreover, it is possible to prevent the synthetic fiber filament from being melted by the heat of the high-temperature gas released from the inflator.

The fabric according to the present invention can use a plain structure, a twill structure, a satin structure, a deformed structure thereof, and the like, but is not particularly limited thereto.

The cover factor of the woven fabric according to the present invention is preferably 1800 to 2300, and more preferably 1850 to 2260. When the cover factor is large, high strength can be easily obtained, but since the fabric weight is large and the fabric tends to become hard and hard, it is preferably suppressed to 2300 or less. Moreover, since the fabric weight will become small and it will become difficult to reduce misalignment when it becomes low, it is preferable that a minimum is 1800.

Here, the cover factor means that the warp total fineness is D ₁ (dtex), the warp density is N ₁ (line / 2.54 cm), the total weft fineness is D2 (dtex), and the weft density is N2 (line / 2.54 cm). ), (D ₁ × 0.9) ^1/2 × N ₁ + (D ₂ × 0.9) ^1/2 × N ₂ .

The woven fabric according to the present invention is woven using warp yarns, weft yarns, and additional yarns as basic yarns. The term “multiplying” is used to prevent the wefts from loosening by sandwiching the wefts by utilizing the rigidity thereof, and forms the ear portion by entanglement with the wefts.

When weaving using the above-mentioned loom ear gripping device, a predetermined number of warp yarns are aligned, the increased yarns are aligned at the end portions of the aligned warp yarns, weft yarns are supplied and driven, and the fabric is woven. As described above, in the vicinity of the ear portion before weaving, the interweaving state of the supplied weft and the added yarn is maintained by the loom ear gripping device, and then the fabric is discharged from the loom ear gripping device. In other words, the ear gripped by the loom ear gripping device in the vicinity of the ear portion before weaving moves in the loom ear gripping device in synchronization with the movement of the fabric, and is then discharged. In the above, the warp includes not only the ground yarn that forms the ground portion but also the warp yarn that is usually used at the end of the fabric, such as leno yarn. The discharged ear portion moves with the movement of the fabric. Since the increased yarn is gradually separated from the cut portion of the weft, the finished fabric does not include the increased yarn. That is, the warp yarn is supplied by a feeding device different from the warp yarn, but the warp yarn is passed through the heald and the heel, whereas the warp yarn does not pass through the heel and is entangled by the opening movement similar to the warp yarn. At the same time, an ear portion is formed and passed through the loom ear gripping device. The thickening is supplied from the vicinity of the warp beam, applied with a spring-type tensor, and passed through the opening heald. The weft is made to fly with high-pressure water or air, and after the warp and weft are driven with a scissors, the weft is cut with a weft cutter. Here, since the above-described loom ear gripping device grips so as to maintain the entangled state of the ear, it is possible to prevent the cut weft from coming off or loosening from the ear. Thereby, the weft crimp of the ear | edge part becomes small compared with the case where the ear | edge part grip apparatus for fibers is not installed, and the crimp of a warp becomes large. As a result, the warp tension is increased, the gripping force of the weft is increased, and the weaving of the ear is reduced. Therefore, since the fabric length difference between the ear end portion and the center portion of the fabric is reduced, the amount of arc shape is reduced, and the ear sagging can be improved.

When weaving by the conventional method without using the above-mentioned loom ear gripping device, the weaving mouth before weaving is represented by the distance from the temple tip to the weaving mouth, and when wefts are run by high-pressure water or air pressure Since the wefts are subjected to high tension, when the wefts are driven by the scissors and the wefts are cut with a cutter, the free weft ends return to the ground side, and the weft tension at the fabric ears decreases, resulting in a large weft crimp. On the contrary, since the warp crimp of the ear part becomes small, the warp tension of the ear part becomes low. As a result, the weft gripping force by the warp is lost, and the weaving mouth is greatly retracted, resulting in an increase in the amount of arc shape of the fabric, leading to the occurrence of sagging and deterioration of the physical properties of the fabric. Such a problem is solved by weaving with the use of.

When weaving using the above-mentioned weaving ear gripping device, it is usual to supply a yarn increase from a triangular cone or a paper tube without using a planetary device or a bobbin. In particular, it is preferable to use a spring washer in order to manage the tension during supply.

It is preferable that the yarn increase is a multifilament yarn that has been crimped, since the tension fluctuation during weaving is small by giving an appropriate crimp. The material of the yarn addition is not particularly limited, but is preferably selected so that polyester or nylon is generally easily available and the yarn characteristics with the warp are close.

The total fineness of the processed yarn used for the yarn addition is preferably larger than the total fineness of the weft. This is because the entanglement strength between the weft and the weft at the ear is kept larger than the entanglement strength between the warp and the weft, and the weft after cutting is prevented from falling off or loosening from the ear.

The number of additional yarns is preferably 4-8. The fabric using the above-mentioned loom ear gripping device is preferably woven in a jet loom because it can be operated at high speed, and a water jet loom is particularly preferred. In the water jet loom, the weft yarn is caused to fly by high-pressure water, and after the weft yarn is driven, the weft yarn is cut at the weft nozzle side. For this reason, the flying tension of wefts tends to be higher than that of air jet looms and rapiers, and further improvement in the weft gripping force of the ears is required. ) And the effects of the lobe ear gripping device of the present invention are remarkable.

When weaving a high-density fabric using the above-mentioned loom ear gripping device, weaving in a water jet loom, then drying and / or scouring and setting to remove oils and wrinkles attached to the raw yarn It is preferable to do.

The width of the woven fabric according to the present invention is not particularly limited, but it is particularly useful in, for example, a woven fabric having a width of 140 cm or more, particularly 180 cm or more, since the larger the width, the easier the ear sag occurs. The upper limit is preferably 280 cm or less from the viewpoint of production.

Next, a method for weaving the fabric according to the present invention using the above-mentioned loom ear gripping device will be described.

Using the above-described yarn for warp, thickening, and weft, warp and warp with a fineness according to the fabric design are warped and applied to the loom, and the weft is similarly prepared. Thickening is usually thicker than warp. As the loom, it is preferable to use a water jet loom from the viewpoint of reducing the occurrence of warp fluff and improving the productivity.

The tension of the warp and the additional yarn is preferably 10 to 250 cN / line, more preferably 20 to 200 cN / line. By setting it within such a range, voids between single fibers in a yarn bundle of yarns constituting the fabric can be reduced, and a dense fabric can be obtained. In addition, after inserting the weft, the warped yarn that has been subjected to the above tension pushes and bends the weft, thereby increasing the tissue binding force of the fabric in the weft direction, improving the anti-alignment of the fabric, and strengthening the seam portion of the sewn product. can do. When the warp tension is small, the contact area between the warp and the weft in the woven fabric cannot be increased, and it is difficult to obtain a sliding resistance force to a desired position, and the effect of reducing the gap between the single fibers is small. When the warp tension is too high, the warp tends to be fluffed by friction with heald mail.

Specific methods for adjusting the warp tension within the above range include adjusting the weft feed speed of the loom and adjusting the weft driving speed. Whether or not the warp tension is actually within the above range during weaving can be confirmed, for example, by measuring the tension applied per warp in the middle of the weaving machine between the warp beam and the back roller. . Moreover, it is preferable to make a difference between the upper thread sheet tension and the lower thread sheet tension at the warp opening.

As an adjustment method, for example, there is a method in which the back roller height is set at a position 10 to 30 mm higher than the horizontal position, for example, so that the running line length of the upper thread and the lower thread is different. As another method for providing the difference between the upper thread tension and the lower thread tension, for example, a cam drive system is adopted in the opening device, and the dwell angle on one side of the upper thread / lower thread is set to be 100 degrees or more larger than the other. There is also a method, and the tension increases when the dwell angle is increased.

Next, if necessary, processing such as scouring and heat setting is performed after the weaving process.

The fabric woven using the above-mentioned loom ear gripping device can effectively suppress the retreat of the ear knitting and the occurrence of sagging ears even when weaving at high speed. For example, even when the loom is operated at a high speed of about 400 to 900 rpm, the occurrence of ear slack is extremely suppressed, so that it can be cut into a shape as designed and sewing is easy. In addition, since the occurrence of ear sag is suppressed, it is advantageous in terms of cost with less fabric disposal.

[Measuring method]
(1) Total fineness According to JIS L 1013: 2010 8.3.1 A method, the positive fineness was measured at a predetermined load of 0.045 cN / dtex to obtain the total fineness.

(2) Number of single fibers Calculated by the method of JIS L 1013: 2010 8.4.

(3) Single fiber fineness Calculated by dividing the total fineness by the number of single fibers.

(4) Woven density of warp and weft Measured based on JIS L 1096: 2010 8.6.1. That is, the sample was placed on a flat table, the number of warp yarns and weft yarns between 2.54 cm was counted at five different locations, excluding unnatural wrinkles and tensions, and the average value was calculated.

(5) Strength / Elongation Measured under the constant speed elongation condition shown in JIS L 1013: 2010 8.5.1 standard time test. The sample was “Tensilon” (registered trademark) UCT-100 manufactured by Orientec Co., Ltd., and the gripping interval was 25 cm and the pulling speed was 30 cm / min. The elongation was obtained from the elongation at the point showing the maximum strength in the SS curve.

(6) Warp tension during weaving Using “Check Master (registered trademark)” (Type: CM-200FR) manufactured by Kanai Koki Co., Ltd., one warp in the middle of the warp beam and the back roller during operation of the loom The tension applied to the hit was measured.

(7) Evaluation of Ear Slack As shown in FIG. 1, two

central marks

102A and 102B are attached to the central portion of the fabric 10 in the width direction at intervals of 500 mm, that is, the

central portions

102A and 102B of the central fabric. Two lines along the weft, that is,

lines

103A and 103B in the weft direction, from the

marks

102A and 102B in the direction of the weft nozzle side end 101A of the fabric, which is both ends in the width direction, and the anti-weft nozzle side end 101B of the fabric. Pull. Next, between the two weft-

direction lines

103A and 103B, a line in the warp direction at intervals of 20 mm from the weft nozzle-side end 101A of the fabric, which is both ends of the fabric, and the anti-weft nozzle-side end 101B of the fabric, That is, the warp direction lines 104A1 to 104A5 and 104B1 to 104B5 are drawn and cut along the

weft direction lines

103A and 103B and the warp direction lines 104A1 to 104A5 and 104B1 to 104B5, and the strips L1 to L5 and R1 to R5 are cut. After the measurement, the lengths X1 to X5 in the warp direction (that is, the length direction) of the central portions of the strips L1 to L5 and the lengths Y1 to Y5 of the central portions of the strips R1 to R5 are measured. Ear sagging was evaluated.

(8) Circumstance winding situation The diameter of the width direction edge part and the diameter of the center part of the textile object which wound the woven fabric 500m on the paper tube of diameter 100mm were measured, and how much the edge part became larger than the center part was measured. .

(9) Cutting failure With 10 base fabrics stacked, the position 20 mm from the end was cut straight with a laser in the warp direction, and the largest deviation of the 10 sheets from the target line was measured.

[Example 1]
(Warp and weft)
As the warp and weft of the ground part, it is made of nylon 66 and has a single fiber fineness of 6.53 dtex with a circular cross-sectional shape. The total fineness is 470 dtex, the strength is 8.5 cN / dtex, and the elongation is 23. % Non-twisted synthetic fiber filaments and 22 dtex nylon monofilaments as reno yarn at the end of the fabric.

(Weaving)
In the water jet loom using the above-mentioned yarns for warp and weft and provided with a weaving ear gripping device to be described later, the warp tension during weaving is 180 cN / piece, the loom rotation speed is 700 rpm, the warp density is 55 pieces / 2.54 cm. A plain woven fabric having a weft density of 55 / 2.54 cm and a woven fabric width of 150 cm was woven. Two Reno yarns were passed from the planetary device to the warp at the warp end, two on each end of the warp.

In addition, the warp yarn is made of polyester, has a circular cross-sectional shape, and uses three twisted yarns having a single fiber fineness of 3.44 dtex, a filament count of 96 f, and a total fineness of 330 dtex, and a predetermined number of warps. The four yarns were supplied to both ends of the yarn and aligned, and the yarn tension was set at 130 cN / piece. A gap of 5 mm was provided between the warp and the yarn for the auricle. The ejected ear part was gradually removed from the thread in the ear chamber, and the thread was recovered through the guide along the same route as the catch cord on the side of the counter weft nozzle.

(Ear gripping device for weaving)
The ear portion includes an ear portion passage space portion in which an ear portion formed by entanglement of a yarn and a weft yarn can pass in the fabric feeding direction, and a weft movement gap portion in which the weft yarn can move in the fabric feeding direction. The weaving ear gripping device of FIG. 3 provided with a pair of leaf springs arranged in the passage space is installed so as to face both ends of the weft nozzle side and the weft anti-nozzle side in the vicinity of the loom before weaving.

The weaving ear gripping device 7 has a substantially rectangular shape made of stainless steel (width 6 mm, height 30 mm, length 25 mm, ear gripping length 20 mm, ear gripping width 4 mm). As shown in FIG. 3, the weaving ear gripping device 7 includes an ear portion passage space portion inlet 71A and an ear portion passage space portion outlet 72A having a width of 4 mm and a height of 10 mm. The pair of

leaf springs

74A and 74B are made of stainless steel having a thickness of 0.3 mm, are provided with arc portions at both ends of a flat plate portion having a length of 20 mm, and are fixed to the leaf spring supports 75A and 75B with bolts. The ear portion is configured to be sandwiched between the flat plate portions of the pair of leaf springs so that the ear portion passes in synchronization with the flow of the fabric. Further, as shown in FIG. 4, weft nozzle side ear moving gaps 72 </ b> A and fabric side ear moving gaps 72 </ b> B are formed on both sides of the weaving ear gripping device 7. The width of the gap is slightly larger than the weft diameter, but is smaller than the thickness of the entangled portion of the weft and the additional yarn, so that the weft moves in parallel along the flow of the fabric. Even after being cut by the weft cutter, the ear portion does not come out from the weft movement gap to the fabric side.

[Example 2]
(Warp and weft)
As the warp and weft of the ground part, it is made of nylon 66 and has a single fiber fineness of 3.46 dtex with a circular cross-sectional shape. The total fineness is 470 dtex, the strength is 8.5 cN / dtex, and the elongation is 23. % Non-twisted synthetic fiber filaments and 22 dtex nylon monofilaments as reno yarn at the end of the fabric.

(Weaving)
In the water jet loom using the above-mentioned yarns for warp and weft and provided with a weaving ear gripping device to be described later, the warp tension during weaving is 180 cN / piece, the loom rotation speed is 700 rpm, the warp density is 55 pieces / 2.54 cm. A plain woven fabric having a weft density of 55 / 2.54 cm and a woven fabric width of 200 cm was woven. Two Reno yarns were passed from the planetary device to the warp at the warp end, two on each end of the warp. The weft and the weaving ear gripping device woven the fabric in the same manner as in Example 1.

[Example 3]
(Warp and weft)
As the warp and weft of the ground part, it is made of nylon 66 and has a single fiber fineness of 3.46 dtex with a circular cross-sectional shape. The total fineness is 470 dtex, the strength is 8.5 cN / dtex, and the elongation is 23. %, Non-twisted synthetic fiber filaments were used, and 22 dtex nylon monofilaments were used as the reno yarn at the end of the fabric.

(Weaving)
In the water jet loom with the above-mentioned yarn used for warp and weft and provided with a weaving ear gripping device to be described later, the warp tension during weaving is 100 cN / piece, the loom speed is 720 rpm, the warp density is 50 pieces / 2.54 cm. A plain woven fabric having a weft density of 50 / 2.54 cm and a woven fabric width of 240 cm was woven. Two Reno yarns were passed from the planetary device to the warp at the warp end, two on each end of the warp. The weft and the weaving ear gripping device woven the fabric in the same manner as in Example 1.

[Example 4] (War and Weft)
As the warp and weft of the ground part, it is made of nylon 66 and has a single fiber fineness of 2.43 dtex with a circular cross-sectional shape. The total fineness is 175 dtex, the strength is 8.5 cN / dtex, and the elongation is 23. % Non-twisted synthetic fiber filaments and 22 dtex nylon monofilaments as reno yarn at the end of the fabric.

(Weaving)
In the water jet loom with the above-mentioned yarn used for warp and weft and provided with a weaving ear gripping device to be described later, the warp tension during weaving is 40 cN / piece, the loom rotation speed is 600 rpm, the warp density is 86 yarns / 2.54 cm. A plain fabric having a weft density of 86 / 2.54 cm and a fabric width of 150 cm was woven. Two Reno yarns were passed from the planetary device to the warp at the warp end, two on each end of the warp. The weft and the weaving ear gripping device woven the fabric in the same manner as in Example 1.

[Example 5]
(Warp and weft)
The warp and weft of the ground part are made of polyethylene terephthalate and are composed of single filament 96 filaments having a circular cross-sectional shape of 5.83 dtex, total fineness of 560 dtex, strength 7.5 cN / dtex, elongation 20 % Non-twisted synthetic fiber filaments and 22 dtex nylon monofilaments as reno yarn at the end of the fabric.

(Weaving)
In the water jet loom with the above-mentioned yarn used for warp and weft and provided with a weaving ear gripping device to be described later, the warp tension during weaving is 75 cN / piece, the loom speed is 600 rpm, the warp density is 50 / 2.54 cm. A plain woven fabric having a weft density of 50 / 2.54 cm and a woven fabric width of 200 cm was woven. Two Reno yarns were passed from the planetary device to the warp at the warp end, two on each end of the warp. The weft and the weaving ear gripping device woven the fabric in the same manner as in Example 1.

[Comparative Examples 1 to 5]
Weaving was performed in the same manner as in Examples 1 to 5, except that the weaving ear gripping device and the yarn were not used.

[Comparative Example 6]
(Warp and weft)
As the warp and weft of the ground part, it is made of nylon 66 and has a single fiber fineness of 3.46 dtex with a circular cross-sectional shape. The total fineness is 470 dtex, the strength is 8.5 cN / dtex, and the elongation is 23. % Non-twisted synthetic fiber filaments and 22 dtex nylon monofilaments as reno yarn at the end of the fabric.

(Weaving)
Using the above-mentioned yarn for warp and weft, in a water jet loom, the warp tension during weaving is 100 cN / piece, the loom speed is 720 rpm, the warp density is 50 / 2.54 cm, the weft density is 50 / 2.54 cm, the ear A plain woven fabric having a woven fabric width of 200 cm and a warp density of 13.0 cm at an end of 53.0 pieces / 2.54 cm was woven. Two Reno yarns were passed from the planetary device to the warp at the warp end, two on each end of the warp.

[Comparative Example 7]
(Warp and weft)
As the warp and weft of the ground part, it is made of nylon 66 and has a single fiber fineness of 6.53 dtex with a circular cross-sectional shape. The total fineness is 470 dtex, the strength is 8.5 cN / dtex, and the elongation is 23. % Non-twisted synthetic fiber filaments and 22 dtex nylon monofilaments as reno yarn at the end of the fabric.

(Weaving)
Using the above yarns for warp and weft, in a water jet loom, the warp tension during weaving is 180 cN / pile, the loom speed is 700 rpm, the warp density is 55 / 2.54 cm, and the weft density is 55 / 2.54 cm. Made of nylon 6 for entanglement yarn and ground reinforcement, using wooly processed yarn with a total fineness of 168 dtex and 48 filaments, 5 yarns were inserted by adjusting the density so that the weaving density of the yarn was 25 / 2.54 cm A plain fabric having a fabric width of 200 cm was woven. Two Reno yarns were passed from the planetary device to the warp at the warp end, two on each end of the warp.

[Comparative Example 8]
(Warp and weft)
As the warp and weft of the ground part, it is made of nylon 66 and has a single fiber fineness of 6.53 dtex with a circular cross-sectional shape. The total fineness is 470 dtex, the strength is 8.5 cN / dtex, and the elongation is 23. % Non-twisted synthetic fiber filaments and 22 dtex nylon monofilaments as reno yarn at the end of the fabric.

(Weaving)
Using the above yarns for warp and weft, in a water jet loom, the warp tension during weaving is 180 cN / pile, the loom speed is 700 rpm, the warp density is 55 / 2.54 cm, and the weft density is 55 / 2.54 cm. Nylon 66 having a total fineness of 350 dtex, 72 filaments, and a strength of 8.5 cN / dtex is used for the ear portion, and the width of the ear portion is 1.0% of the width of the ground body portion. Woven fabric. Two Reno yarns were passed from the planetary device to the warp at the warp end, two on each end of the warp.

[Evaluation of ear sagging]
Tables 1 and 2 show the evaluation results of the ear sag in the examples and comparative examples. The woven fabric according to the present invention ensures the desired weft density of the woven fabric, suppresses the generation of fluff due to loose warp of the ear, reduces cutting defects, and passes through the process in roll winding, scouring, and setting processes. It has been confirmed that the occurrence of wrinkles has been reduced. As apparent from the above, the fabric according to the present invention can effectively and inexpensively suppress the retreat of the knitting mouth of the ear end portion and the occurrence of the sagging of the ear. X1 to X5 and Y1 to Y5 are dimensions in the warp direction at the center of each strip, and the unit is mm.

DESCRIPTION OF SYMBOLS 1 Warp 2 Reinforcement 3 筬 4 Weft nozzle 5 Weft 6 Weft cutter 7 Weaving machine ear part gripping device 8 Ear chamber 9 Kashiwa wing 10 Fabric 11 Ear part 71A Ear part passing space part inlet 71B Ear part passing space part outlet 72A Weft nozzle side ear moving gap,
72B Woven side ear moving gap 73

Bolt

74A,

74B Leaf spring

75A, 75B Leaf spring support 101A Weft weft nozzle side end 101B Woven anti-weft nozzle side end 102A,

102B Mark

103A, 103B Weft center Direction lines 104A, 104B Warp direction lines L, R Strip WA WA Warp direction WE Weft direction (width direction)
WI fabric width

Claims

A fabric having the following characteristics:
(1-1) The length X1 in the warp direction of the center portion in the width direction of the strip L1 is 505.5 to 512.5 mm.
(1-2) The length Y1 in the warp direction of the central portion in the width direction of the strip R1 is 505.5 to 512.5 mm.
Here, the strip L1 has two points (102A, 102B) that exist in the center in the width direction of the woven fabric and have an interval of 500 mm in the warp direction, and two lines (103A, 102A) along the weft passing through the respective points. 103B), a weft weft nozzle side end portion (101A), and a warp direction line (104A1) located 20 mm from the side end side in the width direction center side,
The strip R1 includes two lines (103A, 103B) along the weft, a fabric anti-weft nozzle side end (101B), and a warp direction line located 20 mm from the side end in the center in the width direction. (104B1) and obtained by cutting.
Furthermore, the textile fabric of Claim 1 which has the following characteristics.
(2-1) The length X2 in the warp direction of the central portion in the width direction of the strip L2 is 504.5 to 508.5 mm.
(2-2) The length Y2 in the warp direction of the central portion in the width direction of the strip R2 is 504.5 to 508.5 mm.
Here, the strip L2 is cut along a line (104A2) in the warp direction located 20mm from the position where the strip L1 is cut and two lines (103A, 103B) along the weft. It was obtained by
The strip R2 is obtained by cutting along the warp direction line (104B2) located 20 mm from the center of the strip R1 and the two lines (103A, 103B) along the weft. It is a thing.
Furthermore, the textile fabric of Claim 1 or 2 which has the following characteristics.
(3-1) The length X3 in the warp direction of the central portion in the width direction of the strip L3 is 502.0 to 505.0 mm.
(3-2) The length Y3 in the warp direction of the central portion in the width direction of the strip R3 is 502.0 to 505.0 mm.
Here, the strip L3 is cut along a warp direction line (104A3) located 20 mm from the center where the strip L2 is cut and two lines (103A, 103B) along the weft. It was obtained by
The strip R3 is obtained by cutting along the warp direction line (104B3) located 20 mm from the center of the strip R2 and the two lines (103A, 103B) along the weft. It is a thing.
The woven fabric according to any one of claims 1 to 3, which further has the following characteristics.
(4-1) The length X4 in the warp direction of the center portion in the width direction of the strip L4 is 501.0 to 502.5 mm.
(4-2) The length Y4 in the warp direction of the central portion in the width direction of the strip R4 is 501.0 to 502.5 mm.
Here, the strip L4 is cut along a line (104A4) in the warp direction located 20mm from the position where the strip L3 is cut and two lines (103A, 103B) along the weft. It was obtained by
The strip R4 is obtained by cutting along a warp direction line (104B4) located 20 mm from the center of the strip R3 and two lines (103A, 103B) along the weft. It is a thing.
The woven fabric according to any one of claims 1 to 4, which further has the following characteristics.
(5-1) The length X5 in the warp direction of the central portion in the width direction of the strip L5 is 500.0 to 501.0 mm.
(5-2) The length Y5 in the warp direction of the central portion in the width direction of the strip R5 is 500.0 to 501.0 mm.
Here, the strip L5 is cut along a line (104A5) in the warp direction located 20mm from the position where the strip L4 is cut and two lines (103A, 103B) along the weft. It was obtained by
The strip R5 is obtained by cutting along the warp direction line (104B5) located 20 mm from the center of the strip R4 and the two lines (103A, 103B) along the weft. It is a thing.
The woven fabric according to any one of claims 1 to 5, wherein the total fineness of the warp and the weft is 150 to 700 dtex.
The fabric according to any one of claims 1 to 6, wherein the width of the fabric is 140 cm or more.
An airbag using the woven fabric according to any one of claims 1 to 7.