WO2018088473A1

WO2018088473A1 - Textile, holding rod for textile weaving, full-width temple device for loom, loom, and method for producing textile

Info

Publication number: WO2018088473A1
Application number: PCT/JP2017/040427
Authority: WO
Inventors: 保有地; 巧米澤
Original assignee: 東レ株式会社
Priority date: 2016-11-09
Filing date: 2017-11-09
Publication date: 2018-05-17
Also published as: JPWO2018088473A1

Abstract

Provided is a textile that falls within the range demarcated by the following six points, where the horizontal axis is the width (W) of the textile and the vertical axis is the textile density ratio (value found by multiplying (a-b)/b by 100). First point (A): W=185, 100×(a-b)/b=0.5; second point (B): W=185, 100×(a-b)/b=1.6; third point (C): W=205, 100×(a-b)/b=0.5; fourth point (D): W=205, 100×(a-b)/b=1.8; fifth point (E): W=250, 100×(a-b)/b=1.5; sixth point (F): W=250, 100×(a-b)/b=5.4 (where a is whichever is the greater value of the mean densities of warp (yarns/2.54 cm) at positions 100 mm from the two ends of the textile, and b is the mean density of warp (yarns/2.54 cm) of a 100 mm-wide middle section of the textile).

Description

Woven fabric, gripping rod for weaving fabric, full-width temple device for loom, loom, method for producing fabric

The present invention relates to a woven fabric, a weaving grip rod for a woven fabric, a full-width temple device for a loom, a loom, and a method for manufacturing the woven fabric. More specifically, the present invention is suitable for weaving a base fabric for an air bag, and a high-quality fabric, a fabric for weaving such a high-quality fabric by reducing the difference in weaving density during weaving. The present invention relates to a weaving grip bar, a full width temple device for a loom, a loom, and a method for producing such a fabric.

The car is equipped with an airbag for ensuring the safety of passengers. In the event of a car crash or the like, a shock such as a collision is detected by a sensor. Thereafter, high-temperature and high-pressure gas is generated in the airbag, and the airbag is inflated instantaneously by this gas, so that the occupant's face, frontal head, and the like are protected during a collision or the like.

Air bags are generally used to improve properties such as heat resistance, flame resistance, and air barrier properties to woven fabrics made of plain woven fabric using nylon 6-filament yarn of 150 to 1000 dtex or nylon 6-6 filament yarn. A base fabric coated with silicone resin or the like is cut and sewn into a bag. There is also a so-called non-coated cloth which 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, the airbag fabric is highly powerful and low in order to inflate the airbag instantaneously in the event of a car crash and protect the occupant's face, head, knees, etc. Breathability is required. For this reason, it is necessary for the fabric for airbags to use a higher-strength yarn and to have a higher density than the fabric for ordinary clothing. In general, when weaving this high-density fabric, for example, in the case of a fabric design, the warp and weft are 470 dtex, and the warp and weft fabric density is 55 plain weaves per inch (2.54 cm) in both warp and weft. For example, the higher the weft density, the greater the amount by which the weave before weaving moves from the most advanced position of the reed to the warp sending side.

Also, after the weft is driven, the weft is cut by the cutter at the left and right ends before weaving. At this time, the cut wefts are not gripped and become free, and the weft crimps at both ear ends of the base fabric increase, and conversely the warp crimps at the ear ends decrease. Since the weft crimp is increased due to the small fabric gripping force, the warp density is increased at both ends, and there is a difference in the weave density between the center and the end of the fabric. Moreover, the warp tension of both ear | edge parts falls because the crimp difference of both ends and an edge part increases. As a result, the gripping force of the weft by the warp was lowered, the wefts of both ears before weaving were retreated, the warp density at both ends was increased, and the density difference from the center was large. In addition, when the speed of the loom is increased, the phenomenon that the weave at the end of the ear recedes appears more remarkably. The looseness of the warp at the base cloth ear causes a difference in the fabric length between the ear part and the center part, and flare (also referred to as “ear knocking”) in which the ear end part is wavy. The airbag fabric is cut and sewn to make a bag. In this case, in order to make the most effective use of the airbag fabric, a cutting pattern is designed and is usually used up to the ear end or the vicinity thereof. Since the edge of the cut product is easily frayed, if a flare is generated in the vicinity of the ear end portion, a cutting defect is likely to occur. As a result, a desired accurate shape as an airbag cannot be obtained, and the required function is not provided.

As various attempts to prevent weaving at both ears before weaving, in the airbag fabric made of synthetic fiber fabric, the warp fineness of the fabric ear and the warp fineness of the base fabric body A method of making it thinner has been proposed (Patent Document 1). In addition, a method of inserting an additional yarn in addition to the entangled yarn or a method of changing the texture of the entangled yarn has been proposed (Patent Documents 2 to 4).

In addition, a technique that uses an additional temple device at the end of a temple device (also referred to as a full width temple device for a loom) that grips the fabric in the entire width of the loom, and strengthens the force to pull the end toward the winding side (Patent Literature) 5, 6), a technique is known in which the outer diameters of both ends of the fabric gripping rod of the full width temple device are increased to increase the winding amount of the fabric at both ears (Patent Document 7). In addition, a technique using a wide ring temple is known (Patent Documents 8 and 9).

JP-A-10-236253 JP 2001-355143 A Japanese Patent Laid-Open No. 2002-212856 JP 2002-69790 A JP 11-350309 A Japanese Patent Laid-Open No. 10-226946 JP-A-57-128241 JP 7-324257 A JP 2003-278054 A

However, at present, where cost competitiveness is required, when weaving a high-density woven fabric in order to respond to the speeding up of the operation of the loom and the widening of the target woven fabric, these patent documents 1 to 4 are proposed. In the method, if the tension during weft flight increases as the loom speed increases, the weft cannot be sufficiently tightened, leading to a decrease in the warp tension at the ear and an increase in the warp density. There is a problem that the difference in weave density increases.

Also, as in the techniques described in Patent Document 5 and Patent Document 6, when a plurality of temple devices are used, either the central portion or the end portion is gripped at a position away from the pre-weaving. Therefore, the gripping force with respect to either the central portion or the end portion is weakened. Further, since the gripping force is not uniform over the entire width, the protrusion is not sufficiently suppressed over the entire width, and a difference in the weave density occurs between the center and the end of the fabric. In the technique described in Patent Document 7, the gripping force at both ends of the fabric gripping bar is not sufficiently improved. For this reason, the ejection is not necessarily sufficiently suppressed, and there is a difference in the weave density between the center and the end of the fabric. Furthermore, according to the techniques described in Patent Document 8 and Patent Document 9, the fabric gripping force is weak and not uniform over the entire width. Therefore, not only the protrusion of the base cloth ear part is not sufficiently suppressed, but also a difference in the weave density occurs between the center and the end part of the fabric. Further, since the woven fabric is damaged by the needles of the ring temple, the appearance is deteriorated and the tensile strength is easily lowered.

The reason why the protruding end of the fabric becomes large even when the full width temple device is used is as follows. That is, the fabric gripping rod of the full width temple device needs to feed out the fabric. Therefore, the fabric gripping rod has a structure that can move back and forth within the full width temple device. At this time, there is nothing that obstructs the back-and-forth movement at both ends with respect to the central portion of the fabric. As a result, the fabric gripping rod has a larger moving distance at the end portion than the center portion, and the fabric gripping force tends to decrease. As a result, the end of the fabric tends to increase in size.

The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a high-quality woven fabric in which a difference in weaving density between the central portion and both end portions generated during weaving is small. Further, the present invention provides a weaving gripping rod for weaving a high-quality fabric, a full-width temple device for a loom, a loom for weaving the high-quality fabric by reducing the difference in weaving density during weaving and reducing the extrusion. It aims at providing the manufacturing method of the said textile fabric.

The fabric of one embodiment of the present invention that solves the above-described problems is a value obtained by multiplying the fabric width ratio (W) on the horizontal axis and the density ratio ((ab) / b) of the fabric by 100 (100 × (a When -b) / b) is taken on the vertical axis, the width (W) of the fabric and the density ratio of the fabric multiplied by 100 (100 × (ab) / b) are the following 6 It is a woven fabric in an area defined by dots.
First point (A) W = 185, 100 × (ab) /b=0.5
Second point (B) W = 185, 100 × (ab) /b=1.6
Third point (C) W = 205, 100 × (ab) /b=0.5
Fourth point (D) W = 205, 100 × (ab) /b=1.8
Fifth point (E) W = 250, 100 × (ab) /b=1.5
Sixth point (F) W = 250, 100 × (ab) /b=5.4
(However, a is the average value of each warp density (line / 2.54 cm) at a position of 100 mm from both ends of the woven fabric, measured according to JIS L 1096: (1999) 8.6.1. The larger value is b, and b is the average value of warp density (line / 2.54 cm) of 100 mm width at the center of the fabric.)

A weaving grip rod for a woven fabric according to one aspect of the present invention includes a main body portion and reinforcing portions provided at both ends of the main body portion, and the reinforcing portion is configured by a member having a Young's modulus larger than that of the main body portion. The reinforcing part has a total length in the axial direction of 10 mm or more and less than 60 mm, and has a mode described in at least one of the following modes 1 or 2.
Aspect 1: The reinforcing portion includes a portion whose outer peripheral surface is knurled or threaded.
Aspect 2: The reinforcing portion has a large-diameter portion and a small-diameter portion that are formed on the same axis, and the small-diameter portion is embedded in the main-body portion, thereby being attached to the main-body portion.

A full-width temple device for a loom according to one aspect of the present invention is a full-width temple device for a loom including the above-described weaving gripping rod for a woven fabric, and the weaving gripping rod for the woven fabric is provided at both ends of the main body portion and the main body portion. The reinforcing part is made of a member having a Young's modulus larger than that of the main body part, the axial total length of the reinforcing part is 10 mm or more and less than 60 mm, and the following aspect 1 or aspect 2 is a full-width temple device for a loom having the aspect described in at least one of the items.
Aspect 1: The reinforcing portion includes a portion whose outer peripheral surface is knurled or threaded.
Aspect 2: The reinforcing portion has a large-diameter portion and a small-diameter portion that are formed on the same axis, and the small-diameter portion is embedded in the main-body portion, thereby being attached to the main-body portion.

A loom according to one aspect of the present invention is a loom including the above-described full-width temple device for a loom.

The method for manufacturing a fabric according to one embodiment of the present invention is a method for manufacturing a fabric using the loom.

FIG. 1 is a schematic graph for explaining a region partitioned by the first point (A) to the sixth point (F) in the fabric of one embodiment of the present invention. FIG. 2 is a schematic graph for explaining a region defined by the first point (A1) to the sixth point (F1) indicating a preferable range in the fabric of one embodiment of the present invention. FIG. 3 is a schematic plan view of a loom including the temple device according to the embodiment of the present invention. FIG. 4 is a schematic side view of a temple apparatus according to an embodiment of the present invention. FIG. 5 is a schematic plan view of a fabric gripping bar included in the temple device according to the embodiment of the present invention. FIG. 6 is a schematic plan view of a modified example of the fabric gripping bar according to the embodiment of the present invention. FIG. 7 shows the area defined by the first point (A) to the sixth point (F) shown in FIG. 1 multiplied by 100 for the width and density ratio of the fabrics of the examples and comparative examples. FIG. FIG. 8 shows that the area defined by the first point (A1) to the sixth point (F1) shown in FIG. 1 is multiplied by 100 to the width and density ratio of the fabrics of the respective examples and comparative examples. FIG.

<Textile>
The fabric of one embodiment of the present invention has a value (100 × (ab) / b) obtained by multiplying the fabric width ratio (W) on the horizontal axis and the density ratio (ab) / b) of the fabric by 100. ) On the vertical axis, the value obtained by multiplying the fabric width (W) and the fabric density ratio by 100 (100 × (ab) / b) is divided into the following 6 points. It is a woven fabric. The method for producing such a woven fabric is not particularly limited. As an example, such a woven fabric can be produced by a loom including a temple apparatus including a gripping rod for weaving the woven fabric described later.
First point (A) W = 185, 100 × (ab) /b=0.5
Second point (B) W = 185, 100 × (ab) /b=1.6
Third point (C) W = 205, 100 × (ab) /b=0.5
Fourth point (D) W = 205, 100 × (ab) /b=1.8
Fifth point (E) W = 250, 100 × (ab) /b=1.5
Sixth point (F) W = 250, 100 × (ab) /b=5.4
(However, a is the average value of each warp density (line / 2.54 cm) at a position of 100 mm from both ends of the woven fabric, measured according to JIS L 1096: (1999) 8.6.1. The larger value is b, and b is the average value of warp density (line / 2.54 cm) of 100 mm width at the center of the fabric.)

The fabric is preferably in a region defined by the following first point (A1) to sixth point (F1).
First point (A1) W = 185, 100 × (ab) /b=0.5
Second point (B1) W = 185, 100 × (ab) /b=1.4
Third point (C1) W = 205, 100 × (ab) /b=0.5
Fourth point (D1) W = 205, 100 × (ab) /b=1.4
Fifth point (E1) W = 250, 100 × (ab) /b=1.5
Sixth point (F1) W = 250, 100 × (ab) /b=5.2

FIG. 1 is a schematic graph for explaining a region defined by the first point (A) to the sixth point (F) in the fabric of the present embodiment. FIG. 2 is a schematic graph for explaining a region defined by the first point (A1) to the sixth point (F1) indicating a preferable range in the fabric of the present embodiment.

As shown in FIGS. 1 and 2, the fabric of the present embodiment has the first point (A) to the sixth point (F) (preferably the first point (A1) to the sixth point (F1). ) By multiplying 100 by “fabric width (W)” and “density ratio (ab) / b) of fabric” (100 × (ab) / b). The woven fabric of this embodiment included in these partitioned regions has a small woven density difference between the central portion and both ends, and a small difference in air permeability. Sufficient tensile strength and breaking elongation are exhibited, and such a woven fabric is useful as an airbag or the like by being sewn, and in the present embodiment, both ends are the width of the woven fabric as described above. It means the part from the both ends of the direction to the position of 100mm each. It is the site of 100mm wide at the center in the width direction.

The material constituting the fabric of this embodiment is not particularly limited. As an example, the base of the woven fabric may be composed of synthetic fiber multifilaments. Examples of the synthetic fiber material include polyamide fiber, polyester fiber, aramid fiber, rayon fiber, polysulfone fiber, and ultrahigh molecular weight polyethylene fiber. Among these, the material is preferably a polyamide fiber or a polyester fiber excellent in mass productivity and economy.

Examples of polyamide fibers include nylon 6, nylon 66, nylon 12, nylon 46, copolymer polyamide of nylon 6 and nylon 66, and copolymer polyamide obtained by copolymerizing nylon 6 with polyalkylene glycol, dicarboxylic acid, amine, and the like. The fiber which consists of etc. is illustrated. Among these, nylon 6 fiber and nylon 66 fiber are preferable because of their particularly excellent strength.

Examples of the polyester fibers include fibers made of polyethylene terephthalate, polybutylene terephthalate, and the like. The polyester fiber may be a fiber made of a copolymer polyester 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. .

These synthetic fibers have thermal stabilizers, antioxidants, light stabilizers, smoothing agents, antistatic agents, plasticizers, thickeners to improve productivity and properties in the spinning / drawing process and processing process. Additives such as agents, pigments and flame retardants may be included.

The cross-sectional shape of the single fiber of the synthetic fiber may be a circular cross section, and may be a flat cross section in addition to the circular cross section. By using a fiber having a flat cross section, it becomes possible to fill the fiber with a high density when it is made into a woven fabric, and the space occupied between single fibers in the woven fabric is reduced. Compared with the case where cross-sectional yarn is used, the amount of ventilation required for airbag applications can be reduced.

As for the shape of the flat cross section, when the cross sectional shape of the single fiber is approximated to an ellipse, the flatness defined by the ratio (D1 / D2) of the major axis (D1) to the minor axis (D2) is 1.5 or more. It is preferable that it is, and it is more preferable that it is 2.0 or more. Further, the flatness is preferably 4 or less, and more preferably 3.5 or less. The flat cross-sectional shape may be a geometrically true elliptical shape, a rectangular shape, a rhombus shape, a saddle shape, or the like. Further, the flat cross-sectional shape may be a combination of these. Further, the cross-sectional shape may be a protrusion, a dent, or a hollow part partially formed on the basis of the above.

In the fabric of this embodiment, it is usually preferable that the same synthetic fiber yarn is used as the warp and the weft. In the present embodiment, “the same synthetic fiber yarn is used as a warp and a weft” is composed of the same type of polymer for both the warp and the weft, the warp and the weft have the same single fiber fineness, and both the warp and the weft It has the same total fineness. The same type of polymer refers to polymers having a common main repeating unit of polymers such as nylon 66 and polyethylene terephthalate. For example, even a combination of a homopolymer and a copolymer is preferably used as the same kind of polymer in the present embodiment. Furthermore, if there is a copolymer component, and if copolymerization, the types and amounts of copolymer components are the same combination, it is not necessary to distinguish between warp and weft, which is preferable in production management.

In the present embodiment, the synthetic fiber yarn used as the ground yarn of the fabric is preferably a synthetic fiber filament having a single fiber fineness of 1 to 7 dtex. When the single fiber fineness is 7 dtex or less, voids between single fibers in the resulting woven fabric are reduced, and the fiber filling effect is further improved. As a result, the air permeability of the obtained base fabric is likely to be reduced. Moreover, when the single fiber fineness is 7 dtex or less, an effect of reducing the rigidity of the synthetic fiber filament can be obtained. Therefore, the storing property of the airbag using the obtained base fabric is easily improved.

The total fineness of the synthetic fiber yarn used as the ground yarn of the woven fabric is preferably 150 to 1000 dtex. Here, the total fineness refers to the fineness of one woven yarn constituting the fabric structure. As an example, when two yarns of 334 dtex and 96 filaments are aligned and used as one woven yarn (warp yarn) as in the example described later, the total fineness is 668 dtex. In the present embodiment, the fineness is a value by which the fineness fineness is measured at a predetermined load of 0.045 cN / dtex according to JIS L 1013: 2010 8.3.1 A method.

In this embodiment, by setting the total fineness of the synthetic fiber yarn used as the ground yarn to 150 dtex or more, the strength of the resulting fabric can be easily maintained. Further, when the total fineness is less than 150 dtex, in the formation of the warp bending structure described later, the weft tends to have low rigidity, the warp bending structure does not increase, the contact length between the warp and the weft does not increase, There is a tendency for the slip resistance of the fibers in the direction to be insufficient. Moreover, when the total fineness is less than 150 dtex, the obtained base fabric tends not to have a desired low air permeability. By setting the total fineness of the synthetic fiber yarn used as the base yarn to 1000 dtex or less, the airbag using the obtained base fabric is easily maintained in compactness and low air permeability during storage. The total fineness is preferably 200 dtex or more, and more preferably 300 dtex or more. Further, the total fineness is preferably 700 dtex or less, and more preferably 500 dtex or less. By adjusting the total fineness within these ranges, the strength, slip resistance, low breathability, flexibility and compact storage property of the resulting fabric can be improved in a balanced manner.

When the woven fabric of this embodiment is used for an airbag base fabric, the tensile strength of the fibers constituting the woven fabric satisfies the mechanical properties required for the airbag base fabric, and the surface of the yarn production operation. Therefore, both the warp and the weft are preferably 8.0 cN / dtex or more, and more preferably 8.3 cN / dex or more. Further, the tensile strength is preferably 9.0 cN / dtex or less, and more preferably 8.7 cN / dtex or less.

The structure of the fabric of this embodiment is not particularly limited as long as the fabric defined in this embodiment is obtained. For example, when used in an airbag, the texture of the woven fabric is particularly preferably a plain weave from the viewpoint of compact storage. The woven density of the woven fabric may vary depending on whether it is a woven fabric that is resin-processed or a non-resin-processed fabric, and the fineness of the woven yarn. As an example, the cover factor is preferably 1800 to 2500 in order to achieve both low air permeability and high slip resistance. In general, when the cover factor is 1800 to 2500, warp looseness is likely to occur at the ears, and the warp density at the ears tends to be high. However, the loom according to the present embodiment can be effectively employed in the production of a fabric having a cover factor of less than 1800 or more than 2500. In particular, when used for producing a woven fabric having a cover factor of 1800 to 2500, the resulting woven fabric is likely to exhibit the above-described effects.

The cover factor of the woven fabric refers to the sum of the values of the product of the square root of the yarn fineness and the number of yarns per inch calculated for each of the warp and the weft, and the sum of them. That is, the cover factor (CF) of the woven fabric is that the total fineness of the warp is Dw (dtex), the total fineness of the weft is Df (dtex), the weave density of the warp is Nw (line / 2.54 cm), and the weft density of the weft is Nf ( This is expressed by the following formula.
CF = (Dw) ^1/2 × Nw + (Df) ^1/2 × Nf

In the present embodiment, the entangled yarn and the reinforcing yarn may be driven into the ear portion during weaving. The entanglement yarn and the reinforcing yarn are used for forming a woven ear.

“Tangled yarn”, also called Reno, tightens the wefts at both warp ends to form ears to prevent fraying of the ears. When forming an ear, a planetary gear is generally used. Preferably, a planetary gear torsion system is employed. The method for forming the ear may be other methods. The material, type, and fineness of the entangled yarn are appropriately selected depending on the type of ground yarn and the weave density. The number used is preferably 2 or more, preferably 2 at each end. As the entangled yarn, a monofilament having excellent ear fastening performance is generally used. A multifilament may be used as the entanglement yarn. The material of the entangled yarn is preferably the same nylon as the material of the ground yarn. Polyester may be used for the entanglement yarn.

The fineness of the entangled yarn is preferably 33 dtex or less. When the fineness exceeds 33 dtex, fraying may occur at the ear portion of the base fabric, and when the base fabric is wound around a single roll in a long length, the ear height is increased and wrinkles are likely to occur. The fineness is preferably 5 to 22 dtex.

増 “Threading” is used for the purpose of preventing the formation of ears of the base fabric, ear fraying, and ear tearing, similarly to the entangled yarn, and is arranged on both sides of the warp to assist the entangled yarn. However, the planetary device is not used for the yarn addition. Further, the material, type and fineness of the yarn increase are appropriately selected depending on the type and weave density of the ground yarn. As with the above-described entangled yarn, a monofilament with excellent ear fastening performance is preferably used as the yarn increasing. When used, the number of yarns is, for example, 2 to 10 at both ends. The fineness of the yarn addition is preferably 33 dtex or less. When the fineness exceeds 33 dtex, fraying may occur at the ear portion of the base fabric, and when the base fabric is wound around a single roll in a long length, the ear height is increased and wrinkles are likely to occur. The fineness is preferably 5 to 22 dtex.

When monofilaments are used as these entanglement yarns and yarn additions, when a processed yarn having crimps is used, when the woven base fabric is wound on a roll, the height of the ear increases as the roll diameter of the roll increases. It tends to cause hanging and wrinkles. Therefore, it is preferable that the entangled yarn and the additional yarn are yarns that do not have crimps, that is, non-processed yarns. Note that crimped yarns may be used as long as there are no ear heights, ear suspensions, or wrinkles. Further, when multifilament is used as the entanglement yarn or the yarn addition, it is preferable to use a processed yarn such as a crimped yarn.

The material of the yarn addition is preferably the same as the material of the ground yarn. When the base fabric is used for an airbag, the ground yarn is often nylon. Therefore, it is preferable that the yarn increase is nylon. Further, polyester may be used for the yarn addition.

In the present embodiment, the fabric structure is preferably a plain weave. The texture of the woven fabric may be oblique weaving, satin weaving, or the like depending on the characteristics required for the base fabric.

When the fabric manufactured in the present embodiment is for an airbag base fabric, the fabric is woven by a water jet loom and then the base fabric is dried or the oil agent adhering to the raw yarn is removed. Or scouring and setting to remove wrinkles.

The base fabric width after weaving is preferably 160 cm or more, more preferably 180 cm or more, and even more preferably 185 cm or more. Moreover, it is preferable that a base fabric width is 250 cm or less. When the width of the base fabric is within the above range, it is effective in that a woven fabric having a small woven density difference at the center portion of the end portion can be obtained for the woven fabric width. When the width of the base fabric exceeds 250 cm, loss at the time of cutting when manufacturing the airbag is likely to occur. In the present embodiment, the “base fabric width” is the width of the main body of the fabric excluding the ears. The fabric according to the present embodiment has a small difference in weave density not only when the width of the base fabric is 160 cm or more, but also when the width is particularly wide such as 185 cm or more. Thus, it can be said that it is a particularly remarkable effect that a fabric having a small woven density difference is obtained in a wide woven fabric.

As described above, according to the woven fabric of the present embodiment, the woven fabric in the partitioned region has a small woven density difference between the central portion and both end portions, and a small difference in air permeability. The fabric also exhibits sufficient tensile strength and elongation at break. Such a fabric is useful as an airbag or the like by being sewn.

<Full width temple device for loom and loom equipped with full width temple device for loom>
A loom according to an embodiment of the present invention includes a full-width temple device for a loom (hereinafter also simply referred to as a temple device), which will be described later. First, an outline of the loom will be described.

FIG. 3 is a schematic plan view of a loom including the temple device of the present embodiment. The loom 1 is supplied from a warp supply device (not shown) and has a plurality of warps 2 aligned in the longitudinal direction, a reed 3 through which the warp 2 is passed, and a temple device 4 disposed on the downstream side of the reed 3. And a weft nozzle 5 disposed between the reed 3 and the temple device 4; a weft 6 which is suitably fed out in the direction orthogonal to the warp 2 from the weft nozzle 5 and inserted into the weft 2; It mainly includes a weft cutter 7 for cutting the weft 6 driven in the direction of the temple device 4. The temple device 4 is introduced with a fabric 8 formed by wefts 6 being driven by the reed 3. The temple device 4 is a device for preventing wear of the reed 3 due to expansion and contraction and warp breakage when weaving with the loom 1, and is attached before weaving. The fabric 8 led out from the temple device 4 is wound up by a winding device (not shown) arranged on the downstream side. The resulting woven fabric 8 has a width (W) of the woven fabric 8 on the horizontal axis and a density ratio ((ab) / b) of the woven fabric 8 multiplied by 100 (100 × (ab) / b)) Where the vertical axis represents the width (W) of the fabric 8 and the density ratio of the fabric 8 multiplied by 100 (100 × (ab) / b) It is characterized by being inside.
First point (A) W = 185, 100 × (ab) /b=0.5
Second point (B) W = 185, 100 × (ab) /b=1.6
Third point (C) W = 205, 100 × (ab) /b=0.5
Fourth point (D) W = 205, 100 × (ab) /b=1.8
Fifth point (E) W = 250, 100 × (ab) /b=1.5
Sixth point (F) W = 250, 100 × (ab) /b=5.4
(However, a is the average value of each warp density (line / 2.54 cm) at a position of 100 mm from both ends of the fabric 8 measured in accordance with JIS L 1096: (1999) 8.6.1. Of these, the larger value is shown, and b is the average value of the warp density (line / 2.54 cm) of the central part 100 mm of the woven fabric 8.) Such woven fabric 8 is woven between the central portion and both end portions. The density difference is small and the difference in air permeability is small. In addition, the fabric 8 exhibits sufficient tensile strength and elongation at break. Such a fabric 8 is useful as an airbag or the like by being sewn.

FIG. 4 is a schematic side view of the temple device 4 of the present embodiment. The temple device 4 of the present embodiment is a so-called bar temple, and a fabric gripping bar 9 (grip weaving gripping rod) for gripping the fabric 8 during weaving, and a pair of upper and lower gripping members (over the entire width of the fabric 8) ( The supporting member 10 and the pressing member 11) are mainly provided. In such a temple device 4, the fabric 8 is introduced so as to be gripped by the support member 10 and the fabric gripping bar 9 along the hammering direction A <b> 1. The fabric 8 introduced into the temple device 4 is wound around the outer peripheral surface of the fabric gripping bar 9. The fabric 8 is gripped by the fabric gripping bar 9 and the pressing member 11, and is led out in the striking direction A <b> 1 along the upper surface of the pressing member 11. At this time, the fabric 8 is tensioned by a winding device disposed on the downstream side of the temple device 4. For this reason, the fabric gripping rod 9 around which the fabric 8 is wound is appropriately pressed against the support member 10 and the pressing member 11.

In the fabric 8, when the weft 6 is driven by the kite 3, the fabric gripping rod 9 moves slightly in the kitting direction A1, so that the force gripped by the support member 10 and the pressing member 11 is temporarily weakened. It is done. At that time, the fabric 8 is fed out along with the rotation of the fabric gripping bar 9 and moved in the hammering direction A1. Thereafter, the fabric 8 is again tensioned by the winding device. As a result, the fabric gripping rod 9 moves to the upstream side in the hammering direction A1 and is pressed against the support member 10 and the pressing member 11 again. In such a loom 1 and temple device 4, the rear end portion (before weaving) of the fabric 8 formed by the beaten wefts 6 moves to the downstream side in the beating direction A <b> 1, and an ejection 81 can occur. (See FIG. 3). In particular, the end portion 81 in the width direction of the fabric is likely to have a large protrusion 81 as compared with the central portion. When the protrusion 81 becomes large, the warp tension of the woven fabric decreases particularly at the end portion, and in addition to density unevenness, air permeability unevenness and the like, fluff is likely to occur. The loom may stop the weaving operation when fluff occurs in the fabric. Therefore, suppressing fuzzing not only improves the quality of the resulting fabric, but can also contribute to a reduction in manufacturing costs. In the present embodiment, the size of the squeeze 81 (the squeeze amount) is determined when the temple device 4 is positioned at the upstream end in the striking direction A1 and the scissor 3 is located at the most upstream side in the striking direction A1. Is the maximum distance from the weft thread 6 that has been beaten at the end (see the protruding amount d2 in FIG. 1). The temple device 4 of the present embodiment suppresses such a squeeze 81 that occurs at the time of striking. Hereinafter, each configuration will be described. In addition, the temple apparatus 4 of this embodiment has the characteristics in the fabric holding | grip stick | rod 9. FIG. Therefore, the other configurations shown below (such as the support member 10 and the pressing member 11) are examples, and other known configurations may be adopted.

(Supporting member 10)
The support member 10 is a member to which the fabric gripping bar 9 and the pressing member 11 are attached, and is fixed to the support base 12. The support member 10 is formed on an attachment portion 10a attached to the support base 12, an edge portion 10b extending obliquely upward on the upstream side in the strike direction A1 from the end portion of the attachment portion 10a, and an upper side of the attachment portion 10a. Engaged portion 10c. The engaged portion 10c is a substantially flat plate-like member formed on the upper surface of the mounting portion 10a, and a recessed portion that is depressed in the strike direction A1 is formed on the side surface. An engaging portion 11b of a pressing member 11 described later is engaged with the recess.

(Presser member 11)
The holding member 11 is a member for holding the fabric holding bar 9 together with the support member 10, and has a substantially flat plate-like pressing portion main body 11 a and an obliquely lower side downstream of the striking direction A 1 from the lower surface of the pressing portion main body 11 a. And an extended engaging portion 11b. Of the presser body 11a, the upstream end portion in the striking direction A1 is curved toward the obliquely lower side on the upstream side in the striking direction A1 (curved portion). The holding member 11 and the supporting member 10 are arranged so that the end of the curved portion and the end of the edge portion 10b are separated from each other, and the fabric holding rod 9 is restrained from falling off to the upstream side in the punching direction A1. To do. The engaging portion 11b is slightly smaller in size than the recessed portion of the engaged portion 10c, and is fitted into the recessed portion. Therefore, the pressing member 11 can rotate by a predetermined angle with the engaging portion 11b as a fulcrum in a state where the engaging portion 11b is fitted in the recess.

(Fabric gripping rod 9)
The fabric gripping bar 9 is a bar-shaped member for gripping the fabric 8 during weaving. FIG. 5 is a schematic plan view of the fabric gripping bar 9 provided in the temple device 4 of the present embodiment. FIG. 6 is a schematic plan view of a modified example (fabric gripping bar 9a) of the fabric gripping bar 9 of the present embodiment. As will be described later, the fabric gripping bar can take two forms (or both). Hereinafter, the common matters of both modes will be described, and then one mode (mode 1) will be described as the fabric gripping bar 9 in the present embodiment, and the other mode (mode 2) will be described as the fabric gripping bar 9a of the modified example. To do.

-Common matter of aspect 1 and aspect 2 The common matter of aspect 1 and aspect 2 is demonstrated based on aspect 1 with reference to FIG. The fabric grip rod 9 of the present embodiment includes a main body portion 91 and reinforcing portions 92 provided at both ends of the main body portion 91 in the axial direction A2 of the fabric grip rod 9. The reinforcing portion 92 is made of a material (second material) having a Young's modulus larger than that of the material (first material) constituting the main body portion 91. The total length in the axial direction of the reinforcing portion 92 is 10 mm or more and less than 60 mm. In the present embodiment, the Young's modulus is a value measured based on the “JIS Z 2280 strain gauge method”.

The main body 91 is a main part of the fabric gripping bar 9 and is a relatively long bar-like part. As a 1st material which comprises the main-body part 91, what is necessary is just a material with a Young's modulus smaller than the 2nd material mentioned later. Examples of such materials include resins such as nylon and polyoxymethylene, and metals such as stainless steel, brass, and aluminum. Among these, the first material is preferably a material having a low surface hardness so that the resulting woven fabric 8 is hardly damaged. More specifically, the first material is preferably a resin such as nylon or polyoxymethylene. In the present embodiment, the surface hardness is referred to JIS7202-2, Plastic—How to obtain hardness—Part 2: Rockwell hardness measured based on Rockwell hardness. The first material is preferably one whose Rockwell hardness can be measured on any scale of L scale, R scale, and M scale. Among these, the first material is more preferably 150 or less on the L scale. Furthermore, the first material is preferably 100 or less on the M scale, and more preferably 90 or less. Alternatively, the first material is preferably 150 or less on the R scale, and more preferably 130 or less. Further, the surface of the fabric gripping rod is damaged by the applied stress, and the surface of the damaged fabric gripping rod may come into contact with the fabric. When weaving using a damaged fabric gripping rod, the fabric may be damaged and the physical properties of the fabric may be reduced. Therefore, the fabric gripping rod needs to have a hardness that does not cause damage due to stress. The lower limit of such hardness is preferably 10 or more and more preferably 50 or more on the M scale.

In general, the value of surface hardness differs greatly between resin and metal. For this reason, it is difficult to measure the surface hardness of the resin and the metal by the same method, and to compare and compare the values. Therefore, in the present embodiment, it is more preferable that the surface of the fabric 8 is not damaged, the Rockwell hardness is 100 or less on the M scale, and 150 or less on the R scale. A metal that is determined and is apparently having a surface hardness greater than these is determined to be “hard”.

The length of the main body 91 is not particularly limited. The length of the main body 91 is appropriately adjusted according to the full width of the fabric 8 to be woven, the length of a reinforcing portion 92 described later, and the like.

The thickness (diameter) of the main body 91 is not particularly limited. The thickness of the main body 91 is appropriately adjusted according to the strength (material) and the like. As an example, the thickness of the main body 91 is 7 to 10 mm.

The cross-sectional shape of the main body 91 is not particularly limited. The cross-sectional shape of the main body 91 is preferably circular from the viewpoint of hardly damaging the surface of the fabric 8 and gripping the fabric 8 evenly.

The surface shape of the main body 91 is not particularly limited. As an example, the surface shape of the main body 91 may be uneven or may be a flat surface with no unevenness. It is preferable that the surface shape of the main body 91 is formed with irregularities from the viewpoint of easily suppressing the protrusion 81 and obtaining the effect of extending the fabric 8. Examples of the unevenness processing include a unified coarse thread (described in JIS B 0206), a unified fine thread (described in JIS B 0208), a knurled thread (described in JIS B 0951), and the like.

The reinforcing part 92 is a part provided at both ends of the main body part 91, and is a bar-like part similar to the main body part 91. The reinforcing portion 92 may be configured as a separate member from the main body 91 or may be a member formed integrally with the main body 91. Moreover, the reinforcement part 92 may be integrally formed by being connected with the main-body part 91, and the reinforcement part 92 may be formed in a part of the textile-grip stick | rod 9 which consists of the same member originally. Further, the reinforcing portion 92 and the main body portion 91 may be arranged side by side without being connected to the support member 10 described above.

The reinforcing portion 92 is made of a second material having a Young's modulus larger than that of the first material. Such a second material is preferably a material having a Young's modulus of 10 GPa or more, more preferably a material of 100 GPa or more, although it depends on the first material. More specifically, examples of the second material include resins such as nylon and polyoxymethylene, and metals such as stainless steel, brass, and aluminum. Among these, it is preferable that the second material is made of a resin from the viewpoint that the obtained fabric 8 is hardly damaged. On the other hand, the second material is preferably made of metal from the viewpoint of being able to maintain a high fabric gripping force and having high rigidity. As described above, the second material may be appropriately selected according to the desired effect.

As for the surface hardness of the reinforcing portion 92 (second material), the Rockwell hardness measured by the test method of ASTM D785 is referred to, as with the main body portion 91. The second material is preferably 100 or less, more preferably 90 or less on the M scale. In addition, the second material is preferably 150 or less, more preferably 130 or less on the R scale.

The length of the reinforcement part 92 should just be 10 mm or more, and it is preferable that it is 15 mm or more. Moreover, the length of the reinforcement part 92 should just be less than 60 mm, and it is preferable that it is 50 mm or less. When the length of the reinforcing portion 92 is less than 10 mm, the stress that is pressed against the supporting member 10 and the pressing member 11 tends to be small in the reinforcing portion 92. For this reason, the fabric gripping rod 9 tends to have a weak gripping force on the fabric 8. As a result, the temple device 4 tends not to sufficiently suppress the protrusion 81. On the other hand, when the length of the reinforcing portion 92 is 60 mm or more, the temple device 4 is difficult to obtain the effect of suppressing the protrusion 81.

The thickness (diameter), cross-sectional shape, and surface shape of the reinforcing portion 92 are not particularly limited. The thickness, cross-sectional shape, and surface shape of the reinforcing portion 92 are preferably the same as those of the main body portion 91.

Next, the differences between Aspect 1 and Aspect 2 will be described.

-About aspect 1 The aspect 1 is an aspect in which the outer peripheral surface of the reinforcement part 92 contains the part to which the knurling process or the threading process was given. FIG. 5 illustrates a case where the outer peripheral surface of the reinforcing portion 92 is knurled. “Knurling” is a French word meaning “jagged” and is also referred to as “Knurling”. Further, “knurling” refers to forming mesh-like irregularities. In the present embodiment, flare of the obtained base fabric is suppressed by the concavo-convex portion formed on the fabric gripping bar 9. Therefore, the fabric gripping rod 9 according to the present embodiment only needs to be provided with unevenness that exhibits such an effect. In the present embodiment, a portion where such irregularities are formed is referred to as a knurled portion. Therefore, for example, even when the unevenness is formed by a method other than knurling, when the obtained fabric gripping rod 9 has the same effect, the “knurling portion provided in this embodiment” is provided. Corresponds to a “textile gripping rod”. Hereinafter, as an example, a case where a knurled portion is formed by knurling will be described.

The knurling method includes a cutting method by cutting and a rolling method in which a dedicated knurling tool is pressed against the surface of the fabric gripping rod and plastically deformed. In this embodiment, the method for forming the knurled portion may be any method. The knurled eyes include "Hirame" and "Ayame" (JIS B 0951). In the present embodiment, from the viewpoint of more reliably holding the fabric 8, the knurled eye is preferably “Ayame”.

The diameter of the fabric gripping bar 9 at the position where the knurled portion is provided is preferably 5 mm or more, and more preferably 8 mm or more. Further, the diameter of the fabric gripping bar 9 at the position where the knurled portion is provided is preferably 15 mm or less, and more preferably 12 mm or less. When the diameter is less than 5 mm, the fabric gripping rod 9 tends to have a low gripping force and may be pushed out. On the other hand, when the diameter exceeds 15 mm, the strength of the fabric 8 tends to decrease.

For example, when m (module) is displayed, the knurled eye is expressed by the distance from the pitch circle (the center line of the height of the mountain) to the apex. It is a multiplied value. For example, the approximate value is converted to an outer peripheral pitch P = 0.3 × 3.14 = 0.842≈1 when m = 0.3. On the other hand, in the case of count display, it is the number of peaks in one inch, and 25.4 ÷ pitch = count. In the present embodiment, the knurled eye is preferably 10th or more. Moreover, it is preferable that a knurl is 40th or less. When the knurled stitch is less than 10th, the strength of the resulting woven fabric tends to decrease. On the other hand, when the knurled stitch exceeds 40th, the fabric gripping rod tends to have a low gripping force and may be pushed out.

The lengths of the knurled portions (reinforcing portions 92) at both ends of the present embodiment are preferably 15 mm or less, respectively. When the length of the knurled portion is less than 10 mm, the fabric 8 is not firmly gripped, and there is a tendency that a difference in weave density is likely to occur in the base fabric. On the other hand, when the length of the knurled portion exceeds 15 mm, the gripping force of the fabric gripping rod 9 becomes too strong, and the tensile strength and breaking elongation of the fabric 8 tend to decrease.

Further, in aspect 1, instead of the knurled part, a threaded part subjected to threading may be formed. The threaded portion is a portion having a coiled protrusion shape (thread) on the outer surface of a cylinder or cylinder. The surface shape of the screw is not particularly limited. For example, from the viewpoint of firmly holding the fabric 8, the screws are triangular such as unified coarse screws (described in JIS B 0206), unified fine screws (described in JIS B 0208), knurled eyes (described in JIS B 0951), and the like. A screw is preferred. The screw may be a trapezoidal screw, a square screw, a sawtooth screw, a round screw, or the like.

Since the dimensions and the like of the threaded portion are the same as those of the knurled portion described above, description thereof is omitted.

-About aspect 2 As FIG. 6 shows, aspect 2 has the large diameter part 92b and the small diameter part 92c in which the reinforcement part 92a of the textile-grip stick 9a was formed coaxially, and the small diameter part 92c is a main-body part. It is the aspect with which it was mounted | worn with the main-body part 91a by being embedded in 91a. The main body portion 91a is the same as the main body portion (main body portion 91, see FIG. 5) in common matters except that a fitting hole in which a small diameter portion 92c described later is embedded is formed.

The large-diameter portion 92b has a larger diameter than the small-diameter portion 92c described later, and is a portion formed coaxially with the small-diameter portion 92c. The surface shape of the outer surface of the large diameter portion 92b is not particularly limited. The outer surface of the large diameter portion 92b may have a surface shape similar to that of the main body portion 91a, and the knurling process or the threading process described in the aspect 1 may be performed. Since the outer peripheral surface of the large-diameter portion 92b is knurled or threaded, the fabric 8 obtained by using the loom including the temple device including the fabric gripping rod 9a is used to reinforce the fabric gripping rod 9a. The portion 92a can be gripped more reliably. As a result, the weave 8 is more difficult to retreat, and the difference in weave density between the center and both ends is further reduced. Therefore, the woven fabric 8 has a smaller woven density difference between the central portion and both end portions, and further reduces the difference in air permeability. Further, the fabric 8 exhibits further excellent tensile strength and breaking elongation.

The diameter of the large diameter portion 92b is preferably the same as the diameter of the main body portion 91a. Thereby, the fabric 8 obtained by using the loom including the temple device including the fabric gripping bar 9a is more reliably gripped by the reinforcing portion 92a of the fabric gripping bar 9a. As a result, the woven fabric 8 is less likely to retreat, and the difference in the woven density between the central portion and both end portions becomes smaller. Therefore, the fabric 8 has a smaller woven density difference between the center portion and both end portions, and a smaller difference in air permeability. In addition, the fabric 8 exhibits better tensile strength and elongation at break. In the present embodiment, “the diameter of the large-diameter portion 92b is the same as the diameter of the main body portion 91a” means that the ratio of the “diameter of the main body portion 91a” to the “diameter of the large-diameter portion 92b” is 100 ±. It means 2.5%.

The material of the large diameter portion 92b is the same as that of the reinforcing portion 92 described above in common matters.

The small diameter portion 92c has a smaller diameter than the large diameter portion 92b and is a portion embedded in the main body portion 91a. More specifically, the shape of the small diameter portion 92c is not particularly limited by embedding the small diameter portion 92c in fitting holes formed at both ends of the main body portion 91a. The small diameter portion 92c may be a columnar shape, a prismatic shape, various polygonal shapes, or an indefinite shape. In addition, it is preferable that the shape of the fitting hole of the main-body part 91a is a shape complementary to the small diameter part 92c so that the small diameter part 92c may be embedded without gap. For example, when the small-diameter portion 92c is cylindrical, the fitting hole is preferably a cylindrical hole having a diameter that is the same as or slightly different from the outer diameter of the small-diameter portion 92c.

The diameter of the small-diameter portion 92c only needs to be large enough for the reinforcing portion 92a to be properly positioned on the main body portion 91a. For example, when the small diameter portion 92c is cylindrical, the diameter of the small diameter portion 92c is preferably 2 mm or more, and more preferably 4 mm or more. In addition, the diameter of the small diameter part 92c should just be smaller than a large diameter part.

The material of the small diameter portion 92c is not particularly limited. The material of the small diameter portion 92c may be the same as that of the large diameter portion 92b (that is, it may be the second material) or may be different.

As long as the total length in the axial direction of the reinforcing portion 92a is 10 mm or more and less than 60 mm, the dimensions of the large diameter portion 92b and the small diameter portion 92c can be adjusted. In aspect 2, it is preferable that the total axial length of the large-diameter portion 92b exceeds 0 mm and is 5 mm or more. Further, the total length of the large diameter portion 92b in the axial direction is preferably 15 mm or less, and more preferably 10 mm or less. When the total axial length of the large-diameter portion 92b exceeds 15 mm, physical properties such as breaking elongation of the resulting fabric 8 tend to decrease.

Returning to the description of the entire temple device 4, as shown in FIG. 3 or FIG. 4, the temple device 4 according to this embodiment is configured such that when the urging 81 is pushed in by the heel 3, the fabric gripping bar 9 moves in the lashing direction A <b> 1. A strong stress is applied along. The protrusion 81 is formed so that the end portion in the width direction of the fabric 8 is larger than the center portion. Therefore, the stress is easily applied to the reinforcing portion 92 of the fabric gripping bar 9. However, the second material constituting the reinforcing portion 92 has a Young's modulus greater than that of the first material constituting the main body portion 91. For this reason, the fabric gripping bar 9 has a high bending rigidity and is not easily deformed by a stress applied at the time of hammering. As a result, the distance between the fabric gripping bar 9 and the supporting member 10 and the pressing member 11 is shortened when the temple device 4 is beaten, and the temple device 4 can continue to firmly grip the fabric 8 wound around the fabric gripping bar 9. Therefore, the protrusion 81 is kept small.

<Method for producing woven fabric>
Next, a method for producing a fabric according to an embodiment of the present invention will be described. The manufacturing method of the fabric of this embodiment is characterized by weaving the fabric using the above-described loom. Therefore, all the processes other than using the loom described above are examples, and the design can be changed as appropriate.

First, synthetic fiber filament yarn is used as warp and weft. A warp with a fineness according to the fabric design is warped and applied to the loom. Similarly, wefts are prepared. The synthetic fiber filament yarn used for the warp and the weft is preferably the same in terms of the quality of the base fabric in terms of the post-process. As the loom, it is preferable to use a water jet loom because the generation of warp fluff during weaving is small, high-speed weaving is relatively easy and productivity is high.

When weaving with a water jet loom, it is preferable to select a weft length measuring device with restrained flight. As an example, a water jet loom having a device for winding a weft for one pick around a length measuring drum by rotating a guide or a device for winding a weft for one pick by rotating the drum of the length measuring device and blowing by a blower is used. It is preferable. Mainly, a free-drum type length measuring device used for an air jet loom loom applies a brake with a locking pin when the weft of one pick is completed. Therefore, the tension applied to the weft is high, and the retreat of the knitting mouth of the ear portion becomes large. As a result, even if used, the effect is poor. In addition, restraint flying is when the weft of one pick is wound around the drum of the length measuring device by guide rotation or drum rotation, blower by blower, and when the wound weft is finished unwinding from the length measuring device , It means the state of flying with the brake applied to the weft. With restraint flight, the retraction of the ear weave is reduced as compared to the free drum type restraint flight.

In this embodiment, the warp tension is preferably adjusted to 50 cN / line or more, and more preferably adjusted to 100 cN / line or more. The warp tension is preferably adjusted to 250 cN / line or less, more preferably 200 cN / line or less. When the warp tension is adjusted within the above range, the gap between the single fibers in the yarn bundle of the multifilament yarn constituting the woven fabric is likely to be reduced, and the air flow rate of the obtained base fabric is likely to be reduced. In addition, after the weft has been driven, the warp subjected to the tension described above pushes and bends the weft so that the tissue restraint force of the fabric in the weft direction can be easily increased, the anti-displacement of the fabric is improved, and the bag as an airbag Air leakage due to misalignment of the sewn portion when forming the wire is easy to be suppressed. On the other hand, when the warp tension is less than 50 cN / piece, the contact area between the warp and the weft in the woven fabric is difficult to increase, and the sliding resistance of the obtained base fabric is not sufficiently obtained. Moreover, the space | gap between single fibers is hard to be reduced, and it is hard to obtain low air permeability sufficient for the base fabric obtained. On the other hand, when the warp tension exceeds 250 cN / string, there is a tendency that the warp tends to generate fluff due to rubbing with heald mail. Examples of methods for adjusting the warp tension within the above range include a method for adjusting the warp feed speed of the loom, a method for adjusting the weft driving speed, and the like. Whether the warp tension is actually within the above range during weaving can be determined, for example, by measuring the tension applied to one warp with a tension measuring instrument between the warp beam and the back roller during operation of the loom. Can be confirmed.

Also, it is preferable to make a difference between the upper thread sheet tension and the lower thread sheet tension at the warp opening. As a method for adjusting these, the back roller height is generally set at a position 10 to 30 mm higher than the horizontal position, for example, so that the difference between the upper thread traveling line length and the lower thread traveling line length is different. The method of attaching is illustrated. Further, as another method for making a difference between the tension of the upper thread and the tension of the lower thread, for example, a cam drive system is adopted for the opening device, and the dwell angle on one side of the upper thread / lower thread is set to 100 degrees from the other. A method of taking a larger value is exemplified.

In the method for manufacturing a woven fabric according to the present embodiment, processing steps such as scouring and heat setting may be employed as necessary after the weaving step. In particular, when a small air flow rate is required, the obtained base fabric may be coated with a resin or the like on the surface of the base fabric or a coated fabric with a film attached thereto.

As described above, the loom used in the manufacturing method of the present embodiment includes the temple device including the above-described fabric gripping rod. Therefore, by using such a loom, the fabric is more reliably gripped by the reinforcing portion of the fabric gripping bar. As a result, the weave is less likely to recede, and the difference in weave density between the center and both ends becomes smaller. Therefore, the resulting woven fabric has a smaller woven density difference between the center and both ends, and a smaller difference in air permeability. The resulting woven fabric also exhibits better tensile strength and elongation at break.

In addition, the method of manufacturing an airbag from the fabric obtained by the fabric manufacturing method of the present embodiment is not particularly limited. As an example, an airbag can be manufactured by cutting a fabric according to a cutting pattern, sewing it into a bag shape, and attaching an accessory device such as an inflator. The obtained airbag can be used for a driver's seat, a passenger seat and a rear seat, a side surface, a knee, a ceiling airbag, and the like. The obtained airbag is particularly suitably used as a driver seat or passenger seat airbag requiring a large restraining force. Note that the cutting of the fabric is usually performed by stacking a plurality of resin processed fabrics and punching with a knife. In the case of a non-coated base fabric, the edge of the cut product is easily frayed by punching with a knife, and is usually cut one by one with a laser cutter. The fabric of this embodiment has no flare in the vicinity of the ear end. Therefore, the woven fabric is easily cut into a designed shape and is easy to sew. As a result, the airbag of the present embodiment is functionally superior in that the form of the airbag is as designed and can be finished in an accurate form, and has high burst strength. Further, since the woven fabric used for the air bag has a small flare, there is little waste loss, it can be used effectively as much as possible, and it is advantageous in terms of cost.

The embodiment of the present invention has been described above. The present invention is not particularly limited to the above embodiment. The above-described embodiments mainly describe the invention having the following configuration.

(1) The width (W) of the woven fabric is taken on the horizontal axis, and the value obtained by multiplying the density ratio ((ab) / b) of the woven fabric by 100 (100 × (ab) / b) is taken on the vertical axis. In this case, the woven fabric has a width (W) of the woven fabric and a value obtained by multiplying the density ratio of the woven fabric by 100 (100 × (ab) / b) within a region defined by the following six points. .
First point (A) W = 185, 100 × (ab) /b=0.5
Second point (B) W = 185, 100 × (ab) /b=1.6
Third point (C) W = 205, 100 × (ab) /b=0.5
Fourth point (D) W = 205, 100 × (ab) /b=1.8
Fifth point (E) W = 250, 100 × (ab) /b=1.5
Sixth point (F) W = 250, 100 × (ab) /b=5.4
(However, a is the average value of each warp density (line / 2.54 cm) at a position of 100 mm from both ends of the woven fabric, measured according to JIS L 1096: (1999) 8.6.1. The larger value is b, and b is the average value of warp density (line / 2.54 cm) of 100 mm width at the center of the fabric.)

According to such a configuration, the woven fabric in the partitioned region has a small woven density difference between the central portion and both end portions, and a small difference in air permeability. The fabric also exhibits sufficient tensile strength and elongation at break. Such a fabric is useful as an airbag or the like by being sewn.

(2) It comprises a main body part and reinforcing parts provided at both ends of the main body part, the reinforcing part is composed of a member having a Young's modulus larger than that of the main body part, and the total axial length of the reinforcing part is A gripping bar for weaving a woven fabric, which is 10 mm or more and less than 60 mm, and has at least one of the following aspects 1 and 2.
Aspect 1: The reinforcing portion includes a portion whose outer peripheral surface is knurled or threaded.
Aspect 2: The reinforcing portion has a large-diameter portion and a small-diameter portion that are formed on the same axis, and the small-diameter portion is embedded in the main-body portion, thereby being attached to the main-body portion.

According to such a configuration, the fabric is gripped by the reinforcing portion of the fabric gripping rod by using, for example, a loom equipped with a temple device or the like including a woven gripping rod for fabric. As a result, at the time of weaving a high-density fabric, the weave at the end of the ear is difficult to recede, and the difference in weave density between the center and both ends is reduced. Therefore, the obtained woven fabric has a small woven density difference between the center portion and both end portions, and a difference in air permeability. The resulting woven fabric exhibits sufficient tensile strength and elongation at break. In the present embodiment, the “ear end portion” of the fabric refers to the outermost end portions on the left and right sides where the ear portions are formed.

(3) In the case where the reinforcing part has the aspect of the aspect 2, the outer diameter of the large-diameter part and the outer diameter of the main body part are the same.

According to such a configuration, for example, by using a loom equipped with a temple device or the like having a weaving gripping rod for fabric, the fabric is gripped more reliably by the reinforcing portion of the fabric gripping rod. As a result, the weave is less likely to recede, and the difference in weave density between the center and both ends becomes smaller. Therefore, the resulting woven fabric has a smaller woven density difference between the center and both ends, and a smaller difference in air permeability. The resulting woven fabric exhibits sufficient tensile strength and elongation at break.

(4) The woven fabric according to (2) or (3), wherein, in the case where the reinforcing portion has the aspect of the aspect 2, the outer peripheral surface of the large diameter part is knurled or threaded. Gripping rod for weaving.

According to such a configuration, for example, by using a loom including a temple device including a weaving gripping rod for fabric, the fabric is gripped more reliably by the reinforcing portion (particularly the large diameter portion) of the fabric gripping rod. The As a result, the weave is less likely to recede, and the difference in weave density between the center and both ends becomes smaller. Therefore, the resulting woven fabric has a smaller woven density difference between the center and both ends, and a smaller difference in air permeability. The resulting woven fabric exhibits sufficient tensile strength and elongation at break.

(5) A full-width temple device for a loom comprising the weaving gripping rod for a woven fabric according to any one of (2) to (4), wherein the weaving gripping rod for the woven fabric has a main body portion and both ends of the main body portion. The reinforcing portion is formed of a member having a Young's modulus larger than that of the main body portion, and the axial total length of the reinforcing portion is 10 mm or more and less than 60 mm, and the following aspect 1 Or the full width temple apparatus for looms which has the aspect as described in at least any one of aspect 2. FIG.
Aspect 1: The reinforcing portion includes a portion whose outer peripheral surface is knurled or threaded.
Aspect 2: The reinforcing portion has a large-diameter portion and a small-diameter portion that are formed on the same axis, and the small-diameter portion is embedded in the main-body portion, thereby being attached to the main-body portion.

According to such a configuration, the full-width temple device for a loom includes the above-mentioned weaving gripping rod for the fabric. Therefore, by using a loom including such a full width temple device for a loom, the fabric is more reliably gripped by the reinforcing portion of the fabric gripping bar. As a result, the weave is less likely to recede, and the difference in weave density between the center and both ends becomes smaller. Therefore, the resulting woven fabric has a smaller woven density difference between the center and both ends, and a smaller difference in air permeability. The resulting woven fabric exhibits sufficient tensile strength and elongation at break.

(6) A loom including the full-width temple device for a loom according to (5).

According to such a configuration, the loom includes the full-width temple device for the loom including the above-mentioned weaving gripping rod for the woven fabric. Therefore, by using such a loom, the fabric is more reliably gripped by the reinforcing portion of the fabric gripping bar. As a result, the weave is less likely to recede, and the difference in weave density between the center and both ends becomes smaller. Therefore, the resulting woven fabric has a smaller woven density difference between the center and both ends, and a smaller difference in air permeability. The resulting woven fabric exhibits sufficient tensile strength and elongation at break.

(7) A method for manufacturing a woven fabric using the loom described in (6).

Hereinafter, the present invention will be described more specifically with reference to examples. The present invention is not limited to these examples. Various physical property values used in the description of the present invention are based on the measurement methods described below.

[Measuring method]
(1) Total fineness JIS L1013 (2010) 8.3.1 Positive fineness was measured by the method shown in the B method to obtain the total fineness.
(2) Number of filaments Calculated based on the method of JIS L1013 (1999) 8.4.
(3) Strength and elongation Measured under the conditions of constant speed extension shown in JIS L1013 (2010) 8.5.1 standard time test. The sample was “TENSILON” 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.
(4) Cover factor A cover factor is a value calculated from the total fineness and woven density of a yarn used for warp or weft, and is defined by the following equation (1). In Formula (1), Dw is the total warp fineness (dtex), Df is the total weft fineness (dtex), Nw is the weft density of warp yarns (2.52 cm), and Nf is the weft yarn The weave density (main / 2.54 cm).
CF = (Dw ×) ^1/2 × Nw + (Df ×) ^1/2 × Nf (1)
(5) Woven density of warp and weft (warp density and weft density)
In accordance with JIS L 1096: (1999) 8.6.1, the sample is placed on a flat table, 2.54 cm at 5 different points in the center in the width direction of the fabric, excluding unnatural wrinkles and tension. The number of warps and wefts in this section was counted, and the average value of each was calculated.
(6) Tensile strength JIS K 6404-3 Based on test method B (strip method), for each of the warp direction and the weft direction, five test pieces were taken from the region divided into five equal parts in the width direction of the fabric, and the yarn was removed from both sides of the width to a width of 30 mm. The test piece was pulled with a constant-speed tension type testing machine at a holding interval of 150 mm and a tensile speed of 200 mm / min until the test piece was cut. The maximum load until the cutting was measured, and the average value was calculated for each of the warp direction and the weft direction.
(7) Elongation at break JIS K 6404-3 Based on test method B (strip method), for each of the warp direction and the weft direction, five test pieces were taken from the region divided into five equal parts in the width direction of the fabric, and the yarn was removed from both sides of the width to a width of 30 mm. Marks at intervals of 100 mm are attached to the center of these test pieces, and the test pieces are pulled with a constant-speed tension type tester at a gripping interval of 150 mm and a tensile speed of 200 mm / min until the test pieces are cut. The distance between them was read, the breaking elongation was calculated by the following formula, and the average value was calculated for each of the warp direction and the weft direction.
E = [(L-100) / 100] × 100
(In the formula, E is the elongation at break (%), and L is the distance (mm) between the marked lines at the time of cutting)
(8) Fabric density ratio The warp density of the fabric was measured according to JIS L 1096: 2010 8.6.1A method. Place the fabric on a flat table and remove unnatural wrinkles and tension, in the region (end region R2) from the widthwise end of the fabric 8 shown in FIG. The number of warp yarns between 2.54 cm was counted at three locations, and the average value of each was calculated. Further, based on the calculated average value, the difference (warp density difference) between the average warp density in the end region R2 and the average warp density in the central region was calculated.
Difference in warp density = [(warp density in end region−warp density in center region) / warp density in end region] × 100 (%)
(The warp density in the end region was selected from the two ends in the width direction of the woven fabric having the larger difference from the warp density in the central region.)
(9) Air permeability The air permeability when measured at a test differential pressure of 500 Pa was measured with an air permeability tester FX3300-III (manufactured by Textex). The size of the test piece is about 20 cm x 20 cm, and the test piece is attached to one end of a cylinder with a cross-sectional area of 100 cm ² and fixed so that there is no air leakage from the attachment point. Measured and recorded with a flow meter. The definitions of the air permeability c and d are as follows.
Air permeability c: Measurement was performed by collecting five test pieces of about 20 cm × 20 cm from the ends of both ears except 10 cm from the ends of the base cloth in the length direction of the base fabric. The larger one of the average values for each of the five ears was defined as the air permeability c.
Air permeability d: From a center point in the width direction of the base fabric, about 20 cm × 20 cm test pieces were collected in the length direction of the base fabric and measured, and the measured values were measured at five locations. The average value was used.

<Example 1>
[Textile gripping rod of full width temple device]
As the fabric gripping rod, a main body portion and a reinforcing portion having an axial total length of 5 cm on both sides of the main body portion were used. The reinforcement part is made of brass (65% copper, 35% zinc), and is formed on its axis with a length of 1.5 cm, an outer diameter of 8 mm, a large diameter part of 3.5 cm, and an outer diameter of 4 mm. The small diameter part was embedded in the main body part, and the one mounted on the main body part was used. The outer peripheral surface of the large-diameter portion was knurled by 40th thread by a cutting method. The main body is made of polyoxymethylene (an example of the first material) whose surface is threaded, and has an outer diameter of 8.0 mm and a length of 211 cm. The total length of the fabric gripping bar was 214 cm. Table 1 shows the detailed physical properties of the fabric gripping bar. Of the physical properties of the fabric gripping rod, the Young's modulus was measured based on the JIS Z 2280 strain gauge method. The Young's modulus of brass was 100 GPa, and the Young's modulus of polyoxymethylene was 3 GPa. The Rockwell hardness was measured by the test method of ASTM D785. The Rockwell hardness of brass was not measurable on the L, R, and M scales, and the Rockwell hardness of polyoxymethylene was 80 on the M scale. A full-width temple device provided with such a fabric gripping rod was prepared.

[War, Weft]
Synthetic fiber made of

nylon

6,6, with a circular cross-section, single fiber fineness 6.52 dtex, 72 filaments, total fineness 470 dtex, no twist, strength 8.5 cN / dtex, elongation 23.5% A multifilament was prepared.

[Weaving]
Using the above-mentioned yarn as a base yarn for warp and weft, using a water jet loom equipped with the full width temple device, the threading width is 214 cm, the loom rotation speed is 800 rpm, the warp density is 53 yarns / 2.54 cm. A woven fabric with a weft density of 53 / 2.54 cm was woven. As the entanglement yarn, 22 dtex nylon monofilament was used, and two pieces of warp yarns were passed from the planetary device to each of the warp yarn ends. For the yarn addition, a 22 dtex nylon monofilament similar to the entangled yarn was used, and 6 pieces of warp yarns were passed through the healds and heels at the warp end portions. The contact timing between the heel and the weave was as shown in Table 1. The amount of protrusion on the machine was suppressed to a practically sufficient level.

〔smelting〕
After weaving the plain woven fabric, the woven fabric was immersed in an 80 ° C. warm water bath containing 0.5 g / L of alkylbenzenesulfonic acid soda and 0.5 g / L of soda ash for scouring treatment.

[Heat set]
Subsequently, this woven fabric was dried at 180 ° C. for 1 minute under the dimensional regulation of 0% width filling and 0% overfeed using a pin tenter dryer, and the warp density was 54.80 pieces / 2.54 cm and the weft density was A fabric roll of 54.52 pieces / 2.54 cm and a width of 205 cm was obtained. The cover factor of the obtained woven fabric was 2384.

<Examples 2 to 12, Comparative Examples 1 to 4>
A woven fabric was produced in the same manner as in Example 1 except that the used fabric gripping rod, weaving conditions, etc. were changed to those shown in Table 1. In Examples 2 to 12, the amount of protrusion on the loom was suppressed to a practically sufficient level. In Comparative Example 1, the amount of protrusion on the loom was larger than that of the example.

The tensile strength and elongation at break of each woven fabric obtained in Examples 1 to 12 and Comparative Examples 1 to 4 were evaluated by the above evaluation methods. The results are shown in Table 1. The air permeability was evaluated for Example 1, Example 10, Comparative Example 1, and Comparative Example 3. The results are shown in Table 2. For each of the examples and comparative examples, the width (W) of the fabric and the value obtained by multiplying the density ratio of the fabric by 100 (100 × (ab) / b) are shown in FIGS. Described. FIG. 7 shows the area defined by the first point (A) to the sixth point (F) shown in FIG. 1 multiplied by 100 for the width and density ratio of the fabrics of the examples and comparative examples. FIG. FIG. 8 shows that the area defined by the first point (A1) to the sixth point (F1) shown in FIG. 1 is multiplied by 100 to the width and density ratio of the fabrics of the respective examples and comparative examples. FIG.

As shown in Table 1, FIG. 7 and FIG. 8, the fabrics of Examples 1 to 12 are all included in the region defined by the first point (A) to the sixth point (F) shown in FIG. All of these woven fabrics had high tensile strength and elongation at break. Therefore, these woven fabrics were thought to be useful as airbags or the like by being sewn, for example. On the other hand, the woven fabrics of Comparative Examples 1 to 4 are not included in the region defined by the first point (A) to the sixth point (F) shown in FIG. The elongation at break decreased. In particular, the tensile strength of the woven fabrics of Comparative Examples 2 to 4 in which the length of the reinforcing portion was 6 cm or more was small.

Also, as shown in Table 2, the air permeability ratio of the fabric of Example 1 was smaller than the air permeability ratio of the fabric of Comparative Example 1 having the same fabric width. Similarly, the air permeability ratio of the fabric of Example 10 was smaller than the air permeability ratio of the fabric of Comparative Example 3 having the same width of the fabric. Therefore, in comparison with other woven fabrics having the same width, it has been found that the woven fabrics of Examples 1 and 10 are useful as airbags or the like by being sewn.

DESCRIPTION OF SYMBOLS 1 Loom 10 Support member

10a Attachment part

10b Edge part

10c Engagement part 11 Press member 11a Press part main body 11b Engagement part 12 Support stand 2 Warp 3 筬 4 Temple device 5 Weft nozzle 6 Weft 7 Weft cutter 8

Textile

9, 9a

Textile gripping rod

91,

91a Main body

92, 92a Reinforcement part 92b Large diameter part 92c Small diameter part A1 Strike direction A2 Axial direction d1, d2 Extrusion amount R1 central region R2, R3 End region

Claims

In the case where the width (W) of the woven fabric is taken on the horizontal axis and the density ratio ((ab) / b) of the woven fabric is multiplied by 100 (100 × (ab) / b)) is taken on the vertical axis. A woven fabric in which the width (W) of the woven fabric and the density ratio of the woven fabric multiplied by 100 (100 × (ab) / b) are within a region defined by the following six points.
First point (A) W = 185, 100 × (ab) /b=0.5
Second point (B) W = 185, 100 × (ab) /b=1.6
Third point (C) W = 205, 100 × (ab) /b=0.5
Fourth point (D) W = 205, 100 × (ab) /b=1.8
Fifth point (E) W = 250, 100 × (ab) /b=1.5
Sixth point (F) W = 250, 100 × (ab) /b=5.4
(However, a is the average value of each warp density (line / 2.54 cm) at a position of 100 mm from both ends of the woven fabric, measured according to JIS L 1096: (1999) 8.6.1. The larger value is b, and b is the average value of warp density (line / 2.54 cm) of 100 mm width at the center of the fabric.)
A main body, and reinforcing portions provided at both ends of the main body,
The reinforcing part is made of a member having a Young's modulus larger than that of the main body part, and the total axial length of the reinforcing part is not less than 10 mm and less than 60 mm, and is described in at least one of the following aspects 1 and 2. A gripping bar for weaving a woven fabric having the following aspect.
Aspect 1: The reinforcing portion includes a portion whose outer peripheral surface is knurled or threaded.
Aspect 2: The reinforcing portion has a large-diameter portion and a small-diameter portion that are formed on the same axis, and the small-diameter portion is embedded in the main-body portion, thereby being attached to the main-body portion.
The woven weaving gripping rod according to claim 2, wherein the outer diameter of the large diameter portion and the outer diameter of the main body portion are the same when the reinforcing portion has the aspect of the aspect 2.
When the said reinforcement part has the aspect of the said aspect 2, as for the said large diameter part, the knurling process or the threading process is given to the outer peripheral surface, The gripping rod for the weaving of the textile fabric of Claim 2 or 3 .
A full width temple apparatus for a loom comprising the gripping rod for weaving a woven fabric according to any one of claims 2 to 4,
The weaving gripping rod for the fabric is
A main body, and reinforcing portions provided at both ends of the main body,
The reinforcing part is made of a member having a Young's modulus larger than that of the main body part, and the total axial length of the reinforcing part is not less than 10 mm and less than 60 mm, and is described in at least one of the following aspects 1 and 2. A full-width temple device for a loom having the following aspect.
Aspect 1: The reinforcing portion includes a portion whose outer peripheral surface is knurled or threaded.
Aspect 2: The reinforcing portion has a large-diameter portion and a small-diameter portion that are formed on the same axis, and the small-diameter portion is embedded in the main-body portion, thereby being attached to the main-body portion.
A loom comprising the full-width temple device for a loom according to claim 5.
A method for producing a woven fabric using the loom according to claim 6.