JP7289430B2 - Multilayer fabric for underwear and method for producing underwear - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a multilayer fabric for underwear comprising a decorative fabric and an elastic fabric, and a method for manufacturing underwear using the multilayer fabric for underwear.

In general brassieres, along the lower edge of the back side of the belt-shaped part that is hung from the armpit to the back of the wearer (this part is often called the "back part"), " A rubber tape called "undertape" is sewn (see, for example, "undertape 4" in FIG. 1 of Patent Document 1). This type of rubber tape may be sewn along the upper edge of the back portion as well as along the lower edge of the back portion. This rubber tape makes it possible to improve the fit of the brassiere and prevent it from riding up. However, when a rubber tape is provided on the back of the brassiere, the rubber tape locally presses the wearer's skin, which not only makes the brassiere uncomfortable to wear, but also leaves traces on the wearer's skin. There is a problem that it is easy to remain.

Moreover, rubber tapes are sewn to the leg openings and waist portions of general shorts as well (see, for example, "elastic bands 14a and 14b" in FIG. 1 of Patent Document 2). This rubber tape makes it possible to improve the fit of the shorts and prevent the legs from riding up and the waist from slipping down. However, if rubber tape is sewn to the leg openings and waist of the shorts, the sewn parts of the rubber tape will locally press the wearer's skin, which not only makes the shorts uncomfortable to wear, but also makes them uncomfortable to wear. is likely to remain on the wearer's skin. In particular, if rubber tapes are sewn on both side edges of the crotch of shorts, the areas where the rubber tapes are provided may come into contact with women's delicate parts, causing pain to the wearer.

In view of such circumstances, brassieres that do not use rubber tape in the back portion have been proposed so far. For example, in FIG. 3 and paragraph 0015 of Patent Document 3, a back part of a brassiere is formed by a cylindrical part formed by overlapping two pieces of elastic cloth and fixing the upper and lower sides thereof. Techniques for constructing are described. In paragraph 0030 of Patent Document 3, etc., by adopting the above configuration, it is possible not only to improve the wearing comfort of the brassiere, but also to prevent the residue of the rubber tape from remaining on the wearer's skin. It is also stated.

As for shorts, there has also been proposed a non-sewn type that is manufactured by forming the constituent fabrics of stretchable fabrics and by heat-sealing the constituent fabrics. For example, in FIG. 1 of Patent Document 4, a shorts 1 composed of a front body front part 2, a front body side part 3, a back body 4 and a crotch cloth 5 (crotch cloth), and a front body front part 2 and a back body 4 are fused together via a thermoplastic adhesive film. Paragraph 0006 and the like of Patent Document 4 also states that by adopting the above configuration, it is possible to provide shorts that do not have seams and are comfortable against the skin.

Japanese Patent Application Laid-Open No. 2002-294503 Japanese Patent No. 3150988 JP-A-11-061510 Japanese Patent No. 3131864

However, although the technique disclosed in Patent Document 3 can be applied to brassieres with a simple design, it is difficult to apply the technique to brassieres whose outer material is made of decorative fabric such as lace fabric. In particular, when a decorative fabric with a scalloped edge (a wave-like portion with a series of semicircles) is used as the outer material, if the technique of Patent Document 1 is adopted, the edged portion Since it is fixed to the lining while being folded back inside, there is a possibility that the extra fringe is not only wasted but also looks rather unsightly.

In addition, although the technique of Patent Document 4 can be applied to shorts with a simple design, it is difficult to apply the technique to shorts that use a decorative fabric such as a lace fabric for the outer material. This is because, if a decorative fabric such as lace fabric is used as the outer material, it is necessary to sew the decorative fabric to the lining. This is because it becomes difficult to treat the edges of the decoration material (outer material).

The present invention has been made to solve the above-mentioned problems, and while it has a fashionable appearance using a decorative fabric such as a lace fabric as an outer material, it can provide an excellent fit without using a rubber tape. It is intended to provide an undergarment that It is also an object of the present invention to beautifully finish the processing of the edges of the decoration fabric in such undergarments.

The above issues are
An edge α ₁ on one side of the outer material and an edge β ₁ on one side of the lining are sewn together,
By sewing the edge α ₂ on the other side of the outer material and the edge β ₂ on the other side of the lining,
A method for producing a multi-layer underwear fabric for obtaining a multi-layer fabric for underwear in which a front material and a lining material are integrated,
Forming at least part of the outer material with a decorative fabric,
While forming almost the entire lining with elastic fabric,
The edge α ₁ of the outer material and the edge β ₁ of the lining are stitched together, the edge α ₂ of the outer material and the edge β ₂ of the lining are stitched, and the outer material and the lining are formed into a hollow cylindrical shape, The problem is solved by providing a method for manufacturing a multilayer fabric for underwear characterized by turning over a cylindrical outer material and a lining material.

The multi-layer fabric for underwear manufactured by the above method uses an elastic fabric as the lining material, and the entirety of this lining material presses the wearer's skin in a planar manner, thereby preventing the underwear from slipping up or down. can be prevented. That is, the pressing force (tightening force) applied from the undergarment to the wearer's skin can be distributed over substantially the entire lining. For this reason, the wearer's skin is not locally pressed, and an excellent fit can be obtained. It is possible to prevent it from happening.

In addition, the multilayer fabric for underwear manufactured by the above method has a stylish appearance because the decorative fabric is used as the outer material. Furthermore, in the above method, the outer material made of the decoration fabric and the lining material made of the elastic fabric are formed into a hollow cylindrical shape and then turned inside out, so that the edges of the decoration fabric can be beautifully finished.

In the manufacturing method of the multilayer fabric for underwear of the present invention, three edge portions α ₂ , β ₁ , and β ₂ excluding one side edge portion α ₁ of the outer material (decorative fabric) are folded inward. A mode (first embodiment) and a state in which all four edges α ₁ , α ₂ , β ₁ , β ₂ including the edge α ₁ on one side of the outer material (decorative fabric) are folded inward. There are two patterns, one is the mode (second embodiment) to do.

Among these, the method for manufacturing a multilayer fabric for underwear according to the first embodiment includes:
Almost the entire outer surface is formed with decorative fabric,
The outer material and the lining material are placed in an open state so that their back surfaces face the same side, while the edge part β ₁ of the lining material overlaps the back surface side of the edge part α ₁ of the outer material. a single polymerization step;
a first stitching step of stitching the edge portion _α1 of the outer material and the edge portion _β1 of the lining material in a state of being superimposed on each other;
A second polymerization step in which the edge _β2 of the lining and the edge _α2 of the outer material are overlapped by folding the outer material to the front side of the lining along the suture line in the first sewing step;
A second stitching step of stitching the edge α ₂ of the outer material and the edge β ₂ of the lining material in a state of overlapping each other to form the outer material and the lining material into a hollow cylindrical shape;
It is a method of going through a process of turning over the cylindrical outer material and the inner lining.

When a multi-layer underwear fabric is produced by the method for producing a multi-layer underwear fabric of the first embodiment, the edge α ₂ of the outer material (decorative fabric) and the edge β ₁ and edge β ₂ of the lining (elastic fabric) is folded inward, but the edge _α1 of the outer material (decorative fabric) is straight without being folded inward. For this reason, if a fringe is applied to the edge _α1 of the outer material (decorative fabric), it is possible to make the fringe look beautiful. For example, as the outer material, a decorative fabric with a scalloped edge α ₁ is used, and in the first sewing process, the suture line inside the scalloped part of the outer material By stitching the edge _α1 of the outer material and the edge _β1 of the lining material along the seam, it is possible to make the scallops look beautiful. The multi-layer underwear fabric manufactured by the manufacturing method of the multi-layer underwear fabric of the first embodiment (hereinafter sometimes referred to as "the multi-layer underwear fabric of the first embodiment") is a back portion of a brassiere. (Refer to reference numeral 101 in FIG. 2 of the present application.) and the side portion of shorts (reference numeral 201 in FIG. 3 of the present application).

In the method for manufacturing the multilayer fabric for underwear of the first embodiment, after the inside-out step, the edge α ₁ of the outer fabric and the edge β ₁ of the lining are sewn at three points inside the sewing line in the first sewing step. In addition to sewing, it is preferable to provide a three-point sewing process for three-point sewing the outer edge _α2 and the lining edge _β2 inside the sewing line in the second sewing process.

In this way, by performing the three-point sewing process, the edge portion α ₁ of the outer material and the edge portion β ₁ of the lining material, and the edge portion α ₂ of the outer material and the edge portion β ₂ of the lining material are not formed in a thin linear shape, It can be sutured in a belt shape having a certain width. Therefore, the outer material (decorative material) can be integrated with the lining material (elastic material) in a more stable state. In particular, the lace fabric has a large mesh and is weak against tensile force, so when using the lace fabric as the outer material (decoration fabric), the outer material (decoration fabric) and the lining (elastic fabric) are linearly If sewn, the outer material (decorative fabric) may be torn at the sewn portion when the multi-layer underwear fabric is stretched. In this regard, by adopting the configuration related to the above three-point stitching, the force applied to the sewn part of the outer material (decorative fabric) and the lining (elastic fabric) can be dispersed, making the outer material (decorative fabric) less likely to tear. be possible.

In the method of manufacturing the multi-layer underwear fabric of the first embodiment, the decorative fabric used as the outer material may be frilled or embroidered fabric, but is preferably lace fabric. Underwear using lace fabric as the outer material (decorative fabric) has a luxurious and fashionable appearance, and in addition, the lace fabric is often decorated with scallops and other borders. This is because if lace fabric is used as the outer material (decorative fabric), the significance of adopting the configuration according to the present invention increases. In particular, it is preferable to use a stretchable lace fabric (stretch lace) because it is possible to impart stretchability to the outer material (decorative fabric) to the extent that it can easily follow the elongation of the elastic fabric.

On the other hand, the elastic fabric used as the lining is not particularly limited as long as it is elastically stretchable, but it is preferable to use power net or bare jersey. Here, power net refers to a mesh fabric made by weaving or knitting polyurethane elastic yarn, and bare jersey is a yarn in which yarn of other materials such as cotton yarn or wool yarn is wound around polyurethane yarn. (Covered yarn) refers to a tenjiku fabric woven or knitted. Power net and bare cotton sheeting not only have excellent stretchability, but also have the characteristics of being strong and wrinkle-resistant, so they can be suitably used as the lining in the multi-layer underwear fabric of the first embodiment. can.

In addition, the manufacturing method of the multilayer fabric for underwear according to the second embodiment includes:
the outer surface,
a first outer material made of decorative fabric;
Consists of a second outer material made of elastic fabric connected to the first outer material,
the lining,
a first lining made of elastic fabric;
and a second lining made of elastic fabric connected to the first lining,
Both edge polymerization process of overlapping the front side of the lining material against the front side of the outer material, overlapping the edge part α ₁ of the outer material with the edge part β ₁ of the lining material, and overlapping the edge part α ₂ of the outer material with the edge part β ₂ of the lining material and,
The edge part α ₁ of the outer material and the edge part β ₁ of the lining material are sewn together, and the edge part α ₂ of the outer material and the edge part β ₂ of the lining material are sewn together to form the outer material and the edge part β 2 of the lining material. Both edge suturing process to make the lining into a Uraomote tubular shape,
It is a method of going through a process of turning over the cylindrical outer material and the inner lining.

When a multi-layer underwear fabric is produced by the method for producing a multi-layer underwear fabric of the second embodiment, the edges α ₁ and α ₂ of the outer material (decorative fabric) and the edge β of the lining (elastic fabric) ₁ and edge _β2 are all folded inward. Therefore, it is possible to cleanly and neatly finish all four edges α ₁ , α ₂ , β ₁ , β ₂ of the outer material and the lining material. In the manufacturing method of the multi-layer underwear fabric of the second embodiment, if it is desired to apply edge decoration such as scallops to the outer material, it is preferable to apply the edge decoration to edges other than the edges α ₁ and α ₂ of the outer material. The multi-layer underwear fabric manufactured by the method for producing the multi-layer underwear fabric of the second embodiment (hereinafter sometimes referred to as the "multi-layer underwear fabric of the second embodiment") is the front body of shorts. and a crotch cloth (reference numeral 204 in FIG. 11 of the present application).

In the manufacturing method of the multilayer fabric for underwear of the second embodiment,
the outer surface,
A surface polymerization step in which the front surface of the second surface material is superimposed on the front surface of the first surface material so that the connection edges of the first surface material and the second surface material overlap;
a surface stitching step of stitching connecting edges of the first surface material and the second surface material that overlap each other;
The second outer material is formed by going through a surface development step of opening along the suture line in the outer material sewing process so that the front surface of the second outer material faces the same side as the front surface of the first outer material,
the lining,
a lining polymerization step in which the front surface of the second lining is superimposed on the front surface of the first lining so that the connection edges of the first lining and the second lining overlap;
a lining stitching step of stitching connecting edges of the first lining and the second lining that overlap each other;
The second lining is formed by going through a lining developing step of opening along the suture line in the lining sewing step so that the front surface of the second lining faces the same side as the front surface of the first lining. is also preferred.

In this case, in the above-mentioned both edge overlapping process, the front surface of the lining that has been developed in the above-mentioned lining development process is superimposed on the front surface of the outer material that has been developed in the above-mentioned outer material development process. do. As a result, the multilayer fabric for underwear, which has a relatively complicated structure in which the outer material is composed of the first outer material and the second outer material, and the lining is composed of the first lining material and the second lining material, can be maintained in a good-looking state. can be manufactured easily.

In the manufacturing method of the multilayer fabric for underwear of the second embodiment, after the inside-out step, the edge α ₁ of the outer fabric and the edge β ₁ of the lining are sewn three times inside the sewing line in the both edge sewing step. It is preferable to provide a three-point stitching step in which point stitching is performed and the edge portion _α2 of the outer material and the edge portion _β2 of the lining material are stitched inside the sewing line in the both edge portion stitching step. The gist of this is the same as the three-point stitching process in the manufacturing method of the multi-layer underwear fabric of the first embodiment, so the explanation is omitted.

In the second embodiment of the method for manufacturing a multilayer underwear fabric, the decorative fabric used as the first outer fabric may be frilled or embroidered fabric, but is preferably lace fabric. This is because underwear using lace fabric as the outer material (decorative fabric) has a luxurious and stylish appearance. In particular, it is preferable to use a stretchable lace fabric (stretch lace) because it is possible to impart stretchability to the outer material (decorative fabric) to the extent that it can easily follow the elongation of the elastic fabric.

On the other hand, the elastic fabric used as the second outer material and the lining (the first lining and the second lining) is not particularly limited as long as it is elastically stretchable, but it is preferable to use power net or bare jersey. Powernet and bare cotton sheeting not only have excellent stretchability, but also are strong and wrinkle-resistant, so the second outer material and lining material (second (first lining and second lining).

As described above, according to the present invention, it is possible to provide underwear that has a fashionable appearance using a decorative fabric such as a lace fabric as the outer material, and yet has an excellent fit without using a rubber tape. be possible. In addition, in such undergarments, it is also possible to beautifully finish the processing of the edges of the decorative fabric.

FIG. 2 is a diagram showing a multilayer underwear fabric manufactured by the method for manufacturing a multilayer underwear fabric according to the first embodiment. It is the figure which looked at the brassiere from the front. It is the figure which looked at shorts from the front. FIG. 4 is a diagram showing the state of the decorative fabric (outer fabric) and the elastic fabric (lining) after the first polymerization step in the manufacturing method of the multi-layer underwear fabric of the first embodiment. FIG. 4 is a diagram showing the state of the decorative fabric (outer fabric) and the elastic fabric (lining fabric) after the first sewing step in the manufacturing method of the multi-layer underwear fabric of the first embodiment. FIG. 4 is a diagram showing the state of the decorative fabric (outer fabric) and the elastic fabric (lining) after the second polymerization step in the manufacturing method of the multilayer fabric for underwear according to the first embodiment. FIG. 4 is a diagram showing the state of the decorative fabric (outer fabric) and the elastic fabric (lining fabric) after the second sewing step in the manufacturing method of the multi-layer underwear fabric of the first embodiment. FIG. 3 is a diagram showing the state of the decorative fabric (outer fabric) and the elastic fabric (lining) after the turning process is completed in the manufacturing method of the multilayer fabric for underwear according to the first embodiment. FIG. 4 is a diagram showing the state of the decorative fabric (outer fabric) and the elastic fabric (lining fabric) after finishing the three-point stitching process in the manufacturing method of the multilayer fabric for underwear according to the first embodiment. FIG. 3 is a view showing a multilayer underwear fabric manufactured by the method for manufacturing a multilayer underwear fabric of the second embodiment. FIG. 10 is a front view of shorts using the multilayer underwear fabric of the second embodiment. FIG. 10 is a diagram showing the state of outer fabrics (first outer fabric and second outer fabric) after finishing the outer fabric superposing step and the outer fabric sewing step in the manufacturing method of the multilayer fabric for underwear of the second embodiment. FIG. 10 is a view showing the state of outer materials (first outer material and second outer material) after finishing the outer material developing step in the manufacturing method of the multilayered underwear fabric of the second embodiment. FIG. 10 is a view showing the state of the linings (the first lining and the second lining) after the lining polymerization step and the lining sewing step in the manufacturing method of the multi-layer underwear fabric of the second embodiment. FIG. 10 is a diagram showing the state of the linings (the first lining and the second lining) after the lining developing step in the manufacturing method of the multilayer underwear fabric of the second embodiment. FIG. 10 is a diagram showing the state of the outer material and the lining material after the both edge overlapping process and the both edge sewing process are completed in the manufacturing method of the multilayer fabric for underwear according to the second embodiment. FIG. 10 is a diagram showing the state of the outer material and the lining material after the turning process is completed in the manufacturing method of the multi-layered underwear fabric of the second embodiment.

The manufacturing method of the multilayer fabric for underwear of the present invention will be described in more detail with reference to the drawings. In the following, two embodiments (first embodiment and second embodiment) are taken as examples to explain the multilayer fabric for underwear of the present invention.

1. 1. Method for producing multi-layered underwear fabric according to first embodiment First, a method for producing a multi-layered underwear fabric according to the first embodiment will be described. FIG. 1 is a diagram showing a multi-layer underwear fabric (multi-layer underwear fabric of the first embodiment) manufactured by the method for producing a multi-layer underwear fabric of the first embodiment. FIG. 1(a) shows the state of the underwear multi-layer fabric viewed from the front side (the front surface 10A side of the outer material 10), and FIG. 1(b) shows the state of the underwear fabric cut along a plane perpendicular to it. showing.

The multilayer fabric for underwear of the first embodiment is composed of a front material 10 and a lining material 20, as shown in FIG. 1(a). As shown in FIG. 1(b), this multi-layer underwear fabric has an edge α ₁ on one side of the outer material 10 (lower edge in the example of FIG. 1) and an edge β ₁ on one side of the lining 20 (lower edge in the example of FIG. 1). In the example of the figure, the lower edge) is sewn (see suture lines S ₁ and S ₃ ), and the edge α ₂ on the other side of the outer material 10 (upper edge in the example of the figure) and the lining 20 The other side edge β ₂ (upper edge in the example of the figure) is sewn (see suture lines S ₂ and S ₄ ), so that the outer material 10 and the lining 20 are integrated into a tubular shape. It has become a thing.

Since the outer material 10 and the lining material 20 are superimposed and integrated, they usually have substantially the same shape. The shape of the outer material 10 and the lining material 20 is not particularly limited, and varies depending on the underwear part using the multi-layer underwear fabric. Here, the outer material 10 and the lining material 20 both extend from one end in the longitudinal direction (the left end when facing the paper surface of FIG. 1) to the other end (the right end when facing the paper surface of FIG. 1). , the width in the lateral direction (vertical width in FIG. 1) increases as it approaches .

The multilayer fabric for underwear of the first embodiment is used as a part constituting underwear. The multilayer fabric for underwear of the first embodiment can be used as a part of men's underwear. It can be suitably used as a part of women's undergarments that require sturdiness. For example, in the brassiere 100 shown in FIG. 2, the belt-like portion (back portion 101) that is hung around the wearer's back from the armpit, and in the shorts 200 shown in FIG. It can be suitably used as a covering portion (side portion 201) or the like. FIG. 2 is a front view of the brassiere 100. FIG. FIG. 3 is a front view of the shorts 200. FIG. In addition, it can also be used as parts for girdles and body suits.

In the multilayer fabric for underwear of the first embodiment, a fabric having elasticity (stretchability) (elastic fabric) is selected as its lining 20 (Fig. 1). In this example, a power net is used as the lining 20 . In this way, by making the lining 20 an elastic fabric, the multi-layer fabric for underwear can be easily fitted to the wearer's skin without using a rubber tape, and the underwear can be prevented from slipping up or down. be possible. In addition, it is also possible to disperse the pressing force (tightening force) applied to the wearer's skin from the multi-layer underwear fabric over substantially the entire lining 20 so that the wearer's skin is not locally pressed. become. Therefore, it is possible not only to make the underwear comfortable to wear, but also to prevent traces of the underwear from remaining on the wearer's skin.

On the other hand, in the multi-layer underwear fabric of the first embodiment, a decorated fabric (decorative fabric) is selected as the outer fabric 10 (Fig. 1). Here, as the outer material 10, a lace fabric (stretch lace) having elasticity (stretchability) is used. In this way, by making not only the lining 20 but also the outer material 10 a material having elasticity (stretchability), it is possible to make the underwear multi-layered material fit more easily to the wearer's skin. In addition, the appearance of the underwear can be made fashionable by using the decorative material for the outer material 10.例文帳に追加In this example, the edge α ₁ (lower edge) on one side of the outer material 10 is scalloped 13 as an edge decoration to make the appearance of the multi-layered underwear fabric more gorgeous.

Thus, the multi-layered underwear fabric manufactured by the method for producing the multi-layered underwear fabric of the first embodiment (the multi-layered underwear fabric of the first embodiment) has all of fit, comfort and appearance. is good. In the manufacturing method of the multilayer fabric for underwear of the first embodiment, a first polymerization step, a first stitching step, a second polymerization step, a second stitching step, an inside-out step, and a three-point stitching step, which will be described later. After that, we are manufacturing such a multi-layer fabric for underwear. These steps will be described in order below.

[First polymerization step]
FIG. 4 is a diagram showing the state of the decorative fabric (outer fabric 10) and the elastic fabric (lining 20) after the first polymerization step in the manufacturing method of the multilayer fabric for underwear according to the first embodiment. . FIG. 4(a) shows the state of the multilayer fabric for underwear viewed from the back side (the back surface 10B side of the outer material 10 and the back surface 20B side of the lining 20), and FIG. 4(b) shows the outer material 10 and the lining 20. A state cut by a plane perpendicular to each is shown.

In the first polymerization step, as shown in FIG. 4, the outer material 10 and the lining material 20 are arranged in an open state so that the back surfaces 10B and 20B face the same side, while the edge α ₁ of the outer material 10 is The edge _β1 of the lining 20 is superimposed on the back surface 10B side. As in this example, when a material with a scalloped edge decoration such as the scallop 13 is used as the outer material 10, the edge on the side with the scalloped edge decoration such as the scallop 13 is the edge α ₁ (lining material 20).

This first polymerization step is usually performed on a sewing machine table. After finishing the first polymerization step, the first suturing step is performed.

[First suturing step]
FIG. 5 is a diagram showing the state of the decorative fabric (outer fabric 10) and the elastic fabric (lining 20) after the first stitching step in the manufacturing method of the multilayer fabric for underwear according to the first embodiment. . FIG. 5(a) shows the state of the multilayer fabric for underwear viewed from the back side (the back surface 10B side of the outer material 10 and the back surface 20B side of the lining 20), and FIG. 5(b) shows the outer material 10 and the lining 20. A state cut by a plane perpendicular to each is shown.

The first stitching step is a step of stitching the edge portion _α1 of the outer material 10 and the edge portion _β1 of the lining material 20, which overlap each other, as indicated by the stitching line _S1 in FIG. As a result, the outer material 10 and the lining material 20 are connected at the edge _α1 and the edge _β1 . Suturing at suture line _S1 is typically performed using a sewing machine. The method of sewing along the suture line _S1 is not particularly limited, but usually straight stitches such as plain stitches and reverse stitches are used.

By the way, as in this example, when using the outer material 10 with a fringe such as the scallops 13, the suture line _S1 in the first stitching step is aligned with the fringe such as the scallops 13 on the outer material 10. It is preferable to place it on the inner side (edge _α2 side) of the applied portion. As a result, it is possible to make the fringes such as scallops look beautiful in the finished multilayer fabric for underwear.

After finishing the first suturing process, the second superimposing process is performed.

[Second polymerization step]
The second superimposing step is a step of folding back the outer material 10 toward the front surface 20A of the lining 20 along the sewing line _S1 in the first sewing step, as indicated by arrow _A1 in FIG. 5(b). As a result, as shown in FIG. 6, the edge _.beta.2 of the lining 20 and the edge _.alpha.2 of the outer material 10 overlap. FIG. 6 is a diagram showing the state of the decorative fabric (outer fabric 10) and the elastic fabric (lining 20) after the second polymerization step in the manufacturing method of the multilayer fabric for underwear according to the first embodiment. . FIG. 6(a) shows the state of the multi-layer underwear fabric viewed from the back surface 20B side of the lining 20, and FIG. 6(b) shows the state in which the outer material 10 and the lining 20 are cut along a plane perpendicular to each of them. ing.

After finishing the second polymerization step, the second suturing step is performed.

[Second suture process]
FIG. 7 is a diagram showing the state of the decorative fabric (outer fabric 10) and the elastic fabric (lining 20) after the second sewing step in the manufacturing method of the multilayer fabric for underwear according to the first embodiment. . FIG. 7(a) shows the state of the multi-layer underwear fabric viewed from the back surface 20B of the lining 20, and FIG. 7(b) shows the state of cutting the outer material 10 and the lining 20 along a plane perpendicular to each of them. ing.

In the second stitching step, the edge α2 of the outer material ₁₀ and the edge _β2 of the lining 20, which overlap each other, are stitched together as shown by the suture line _S2 in FIG. This is the process of making it into a cylindrical shape. When the second sewing process is completed, the outer material 10 and the lining material 20 are formed into a hollow tubular shape (the front surface 10A of the outer material 10 and the front surface 20A of the lining material 20 form the inner peripheral surface, and the rear surface 10B of the outer material 10 and the lining material 20 The back surface 20B is formed in a cylindrical shape forming the outer peripheral surface. The suturing at suture line _S2 , like the suturing at suture line _S1 , is usually performed using a sewing machine. Also, the sewing method along the suture line _S2 is not particularly limited, but like the sewing along the suture line _S1 , straight stitches such as plain stitches and reverse stitches are usually used.

After finishing the second suturing process, the inside-out process is subsequently performed.

[Turn over process]
In the inside-out process, as shown by the arrow _A2 in FIG. 7A, one open end of the cylindrically sewn outer material 10 and lining material 20 (the open end on the left side as viewed in the drawing) is introduced into the inside of the cylinder composed of the outer material 10 and the lining 20 and pulled out from the other open end (the open end on the right side as viewed in the drawing), so that the outer material 10 and the lining 20 are turned over. It is a process. As a result, as shown in FIG. 8, the tube composed of the outer material 10 and the lining material 20 is turned inside out. FIG. 8 is a diagram showing the state of the decorative fabric (outer fabric 10) and the elastic fabric (lining 20) after the inside-out step in the manufacturing method of the multi-layer underwear fabric of the first embodiment. FIG. 8(a) shows the state of the multi-layer underwear fabric viewed from the front surface 20A side of the lining 20, and FIG. 8(b) shows the state in which the outer material 10 and the lining 20 are cut along a plane perpendicular to each other. ing.

Before performing the inside-out process, as shown in FIG. 7, the back surfaces 10B and 20B of the outer material 10 and the lining material 20 are exposed to the outside (the back surfaces 10B and 20B are the outer peripheral surface of the cylinder). Thus, the front surfaces 10A and 20A of the outer material 10 and the lining material 20 were not exposed to the outside (the front surfaces 10A and 20A became the inner peripheral surface of the cylinder). On the other hand, after the turning process is performed, as shown in FIG. 8, the front surfaces 10A and 20A of the outer material 10 and the lining material 20 are exposed to the outside (the front surfaces 10A and 20A are the outer peripheral surfaces of the cylinder). state), and the back surfaces 10B and 20B of the outer material 10 and the lining material 20 are not exposed to the outside (the back surfaces 10B and 20B are the inner peripheral surface of the cylinder).

In addition, before performing the turning over process, as _shown in FIG. The edges α ₂ and the edges β ₁ and β ₂ of the lining 20 are exposed to the outside of the cylinder. On the other hand, after the _turning process is _performed , as shown in FIG. Edges β ₁ , β ₂ of the lining 20 are folded back inside the cylinder to hide the edges.

In this example, as already described, the edge _α1 of the outer material 10 is scalloped 13. By performing the above-described inside-out process, the edge _α1 with this scallop 13 is , to look natural and beautiful. The edge of the scallop 13 (the edge of the edge _α1 ) is usually not a cut edge (cut edge), but an edge formed by weaving or knitting. Even if it is exposed, it is a part that does not easily fray. On the other hand, the edges of the edge α ₂ of the outer material 10 and the edges β ₁ and β ₂ of the lining 20 are usually the cut ends of the fabric as they are cut. So, it is possible to hide these cut ends inside the tube not only for a neat appearance, but also to prevent these cut ends from fraying.

After the inside-out process is finished, the three-point sewing process is performed.

[Three-point sewing process]
FIG. 9 is a diagram showing the state of the decorative fabric (outer fabric 10) and the elastic fabric (lining 20) after the three-point stitching process in the manufacturing method of the multilayer fabric for underwear according to the first embodiment. . Fig. 9(a) shows the state of the multi-layer underwear fabric viewed from the front surface 20A side of the lining 20, and Fig. 9(b) shows the state of cutting the outer material 10 and the lining 20 along a plane perpendicular to each other. ing.

In the three-point sewing process, as shown in FIG. 9, the edge α ₁ of the outer material 10 and the edge β ₁ of the lining 20 are sewn to the inner side of the suture line S ₁ in the first stitching process (edges α ₂ , β ₂ ) and a suture line _S4 inside (closer to the edges α ₁ and _{β 1 )} than the suture line _S2 in the second stitching step. Since the lace fabric used as the outer material 10 in this example is not strong against tensile force, if it is sewn to the lining 20 only by straight stitching along the stitching lines _S1 and _S2 , it will not be possible to make the underwear composite. When the layered fabric is pulled, the outer fabric 10 may be torn at the suture lines _S1 and _S2 . In this regard, the outer material 10 can be made difficult to tear by sewing the outer material 10 and the lining material 20 together at the stitching lines _S3 and _S4 at three points. Moreover, it is also possible to integrate the outer material 10 with the lining material 20 in a more stable state.

After completing the three-point stitching process, the manufacturing of the multi-layer underwear fabric of the first embodiment is completed. The obtained multi-layer fabric for underwear is used in the manufacture of underwear as parts constituting underwear, such as the back portion of brassieres and the side portions of shorts.

2. Method for Producing Multi-Layer Fabric for Underwear of Second Embodiment Next, a method for producing a multi-layer fabric for underwear of the second embodiment will be described. Regarding the method of manufacturing the multilayer fabric for underwear of the second embodiment, mainly the parts that differ from the method of manufacturing the multilayer fabric for underwear of the first embodiment described above will be described. For the configuration not specifically mentioned in the manufacturing method of the multilayer underwear fabric of the second embodiment, substantially the same configuration as described in the manufacturing method of the multilayer underwear fabric of the first embodiment can be adopted.

FIG. 10 is a diagram showing a multi-layer underwear fabric (multi-layer underwear fabric of the second embodiment) manufactured by the method for producing a multi-layer underwear fabric of the second embodiment. Fig. 10(a) shows the state of the underwear multi-layer fabric viewed from the front side (the front surfaces 11A and 12A of the outer material 10), and Fig. 10(b) shows the state of the underwear fabric cut along a plane perpendicular thereto. are shown respectively.

The multilayer fabric for underwear of the second embodiment is composed of a front material 10 and a lining 20, as shown in FIG. 10(a). This multi-layer underwear fabric has an edge α ₁ on one side of the outer material 10 (in the example in the figure, the edge on the left side when facing the paper surface) and an edge β ₁ on one side of the lining 20 (an example in the figure). Then, the edge on the left side of the paper surface) is sewn, and the edge α ₂ on the other side of the outer material 10 (in the example of the figure, the edge on the right side of the paper surface) and the other side of the lining 20 The outer material 10 and the lining 20 are integrated into a tubular shape by stitching the edge β ₂ (in the example shown in the figure, the edge on the right side as viewed in the drawing).

In the above-mentioned multi-layered underwear fabric of the first embodiment, as shown in FIG. Now, as shown in FIG. 10, each of the outer material 10 and the lining material 20 is composed of two pieces of cloth. That is, the outer material 10 is composed of a first outer material 11 and a second outer material 12 connected to the first outer material 11, and the lining 20 is composed of the first lining 21 and the first lining 21. It consists of a second lining 22 made of connected elastic fabric. In this example, the upper edge of the second outer material 12 is connected to the lower edge of the first outer material 11 , and the upper edge of the second inner material 22 is connected to the lower edge of the first inner material 21 .

Since the outer material 10 and the lining material 20 are superimposed and integrated, they usually have substantially the same shape. The shape of the outer material 10 and the lining material 20 is not particularly limited, and varies depending on the underwear part using the multi-layer underwear fabric. Here, the first outer material 11 and the first lining material 21 are formed in a substantially inverted triangular shape, and the second outer material 12 and the second lining material 22 are formed in a substantially triangular shape. The second outer material 12 and the second lining material 22 have smaller dimensions than the first outer material 11 and the first lining material 21, respectively.

The multilayer fabric for underwear of the second embodiment is used as a part constituting underwear. FIG. 11 is a front view of shorts 200 using the multilayer underwear fabric of the second embodiment. The shorts 200 shown in FIG. 11 are composed of a front body 202, a back body 203, and a crotch cloth 204 (crotch) that connects the lower edge of the front body 202 and the lower edge of the back body 203. The multilayer fabric for underwear of this example is used as the fabric constituting the front body 202 and the crotch fabric 204 of the shorts 200 . That is, the front body 202 of the shorts 200 shown in FIG. The second lining 22 forms the crotch fabric 204 of the shorts 200 . As described above, the double-layer underwear fabric of the second embodiment can be suitably used as a material that constitutes the portion of the shorts 200 consisting of the front body 202 and the crotch cloth 204 .

In the multilayer fabric for underwear of the second embodiment, a fabric having elasticity (stretchability) (elastic fabric) is selected as the lining 20 (Fig. 10). In this example, of the first lining 21 and the second lining 22 constituting the lining 20, the first lining 21 constituting the front body 202 of the shorts 200 (Fig. 11) is made of power net, and the shorts 200 (Fig. The second lining 22 constituting the crotch cloth 204 in 11) uses bare jersey. In this way, by forming the lining 20 with an elastic fabric, the multi-layered fabric for underwear can be easily fitted to the wearer's skin without using a rubber tape, thereby preventing the underwear from slipping up or down. becomes possible. In addition, it is also possible to disperse the pressing force (tightening force) applied to the wearer's skin from the multi-layer underwear fabric over substantially the entire lining 20 so that the wearer's skin is not locally pressed. become. Therefore, it is possible not only to make the underwear comfortable to wear, but also to prevent traces of the underwear from remaining on the wearer's skin.

On the other hand, as the outer material 10 (Fig. 10) of the multi-layered underwear fabric, a decorated fabric (decorative fabric) is used. In this example, of the first outer material 11 and the second outer material 12 that constitute the outer material 10, the first outer material 11 that constitutes the front body 202 of the shorts 200 (FIG. 11) is a lace fabric having elasticity (stretchability). (stretch lace) is used, and bare jersey is used for the second outer material 12 constituting the crotch cloth 204 of the shorts 200 (FIG. 11). In this way, by making not only the lining 20 but also the outer material 10 a material having elasticity (stretchability), it is possible to make the underwear multi-layered material fit more easily to the wearer's skin. In addition, the shorts 200 can be made stylish by using the decorative fabric for the outer surface 11 forming the outer surface of the front body 202 of the shorts 200 (FIG. 11). In this example, the upper edge of the first outer material 11 is scalloped 13 as a fringe to make the shorts 200 look more gorgeous.

Thus, the multi-layer underwear fabric of the first embodiment is good in all of fit, comfort and appearance. In the manufacturing method of the multilayer fabric for underwear of the second embodiment, the outer material forming step, the lining forming step, the both edge overlapping step, the both edge sewing step, the turning inside out step, and the three-point sewing step, which will be described later. After that, we are manufacturing such a multi-layer fabric for underwear. These steps will be described in order below.

[Outer Material Formation Process]
As described above, the underwear material of the second embodiment is formed by joining the first outer material 11 and the second outer material 12 together. It is a step of forming the outer material 10 by joining the two outer materials 12 together. In this example, the outer material forming process is composed of the outer material superposing process, the outer material sewing process, and the outer material developing process.

FIG. 12 is a diagram showing the state of the outer material 10 (the first outer material 11 and the second outer material 12) after the outer material superposing process and the outer material sewing process have been completed in the manufacturing method of the multilayer fabric for underwear according to the second embodiment. is. FIG. 12(a) shows the outer material 10 viewed from the front surface 11A side of the first outer material 11, and FIG. 12(b) shows the outer material 10 cut along a plane perpendicular thereto.

In the surface polymerization step, as shown in FIG. 12, the front surface 12A of the second surface 12 is superimposed on the front surface 11A of the first surface 11, and the connection edge γ ₁ between the first surface 11 and the second surface 12 overlaps. It is a process to make a state. 12, _the outer material sewing step is a step of stitching the connection edge _γ1 of the first outer material 11 and the second outer material 12 that overlap each other in the outer material overlapping process. As a result, the first outer material 11 and the second outer material 12 are connected at the connection edge _γ1 . Suturing at suture line _S5 is typically performed using a sewing machine. The stitching method at the suture line _S5 is not particularly limited, but usually straight stitches such as plain stitches and reverse stitches are used.

FIG. 13 is a diagram showing the state of the outer material 10 (the first outer material 11 and the second outer material 12) after the outer material unfolding step in the manufacturing method of the multilayer underwear fabric of the second embodiment. 13(a) shows the outer material 10 viewed from the front surface 11A side of the first outer material 11, and FIG. 13(b) shows the outer material 10 cut along a plane perpendicular thereto.

In the surface development step, as shown by arrow _A3 in FIG. The process of opening along the suture line _S5 in the process of sewing the outer material so as to face the left side). Thereby, the outer material 10 will be in the state shown in FIG.

After finishing the surface developing process, the surface forming process is completed.

[Lining forming process]
In the underwear fabric of the second embodiment, as already described, the lining 20 is formed by joining the first lining 21 and the second lining 22 together. In this process, the second lining 22 is joined together to form the lining 20. - 特許庁In this example, the lining forming process comprises a lining superposing process, a lining stitching process, and a lining unfolding process.

FIG. 14 is a diagram showing the state of the lining 20 (the first lining 21 and the second lining 22) after the lining superposing step and the lining sewing step are completed in the manufacturing method of the multilayer fabric for underwear according to the second embodiment. is. FIG. 14(a) shows the lining 20 viewed from the front surface 21A side of the first lining 21, and FIG. 14(b) shows the lining 20 cut along a plane perpendicular thereto.

In the lining polymerization step, as shown in FIG. 14, the front surface 22A of the second lining 22 is superimposed on the front surface 21A of the first lining 21, and the connection edge _γ2 of the first lining 21 and the second lining 22 overlaps. It is a process to make a state. In addition, the lining stitching step is a step of stitching the connection edge _γ2 of the first lining 21 and the second lining 22 that overlap each other in the lining overlapping step, as indicated by the stitching line _S6 in FIG. As a result, the first lining 21 and the second lining 22 are connected at the connection edge _γ2 . Suturing at suture line _S6 is typically performed using a sewing machine. The stitching method at the suture line _S6 is not particularly limited, but usually straight stitches such as plain stitches and reverse stitches are used.

FIG. 15 is a diagram showing the state of the lining 20 (the first lining 21 and the second lining 22) after the lining developing step in the manufacturing method of the multilayer underwear fabric of the second embodiment. 15(a) shows the lining 20 viewed from the front surface 21A side of the first lining 21, and FIG. 15(b) shows the lining 20 cut along a plane perpendicular thereto.

In the lining development step, as shown by arrow _A4 in FIG. (Left side) is the step of opening along the suture line _S6 in the lining stitching step. Thereby, the lining 20 will be in the state shown in FIG.

After finishing the lining developing process, the lining forming process is completed.

[Both edges polymerization step]
FIG. 16 is a diagram showing the state of the outer material and the lining material after the both edge overlapping process and the both edge sewing process are completed in the manufacturing method of the multi-layer underwear fabric of the second embodiment. Fig. 16(a) shows the state of the multi-layer underwear fabric viewed from the back surface 11B side of the first outer material 11, and Fig. 16(b) shows the outer material 10 and the lining 20 cut along a plane perpendicular to each. state.

As shown in FIG. 16, the both-edges polymerization step is to attach the lining 20 (the first lining 21 and the second lining 22) to the front surfaces 11A and 12A of the outer lining 10 (the first lining 11 and the second lining 12). The front surfaces 21A and 22A are overlapped, the edge _α1 on one side of the outer material 10 is overlapped on the edge _β1 on one side of the lining 20, and the edge _α2 on the other side of the outer material 10 is overlapped on the edge on the other side of the lining 20. It is a step of superimposing on the part _β2 . In this example, when the outer material 10 and the lining material 20 are overlapped, the connection portion between the first outer material 11 and the second outer material 12 (the location along the suture line _S5 ), the first lining material 21 and the second lining material 22 (places along the suture line _S6 ) do not overlap, the positions of the respective connecting portions are shifted vertically. As a result, the multi-layer underwear fabric is prevented from becoming thick at the connecting portion between the front body 202 and the crotch cloth 204 in the shorts 200 (FIG. 11), and the comfort of wearing the shorts 200 can be further improved. there is

This double edge polymerization process is normally performed on a sewing machine table. After the both edge overlapping process is finished, the both edge sewing process is performed.

[Both edges suturing process]
In the _both edge sewing step, as _shown by the suture line _S7 in FIG. , as shown by the suture line _S8 in FIG. 16, this is a step of stitching the other side edge _α2 of the outer material 10 and the other side edge _β2 of the lining material 20, which are in a state of being overlapped with each other. After the both edge sewing process is completed, the outer material 10 and the lining material 20 are formed into a hollow tubular shape (the front surfaces 11A and 12A of the outer material 10 and the front surfaces 21A and 22A of the lining material 20 form the inner peripheral surface, and the inner surface of the outer material 10 is The surfaces 11B and 12B and the back surfaces 21B and 22B of the lining 20 are formed in a cylindrical shape forming the outer peripheral surface. Suturing at suture lines _S7 and _S8 is usually performed using a sewing machine. Also, the stitching method at the suture lines _S7 and _S8 is not particularly limited, but usually straight stitches such as plain stitches and reverse stitches are used.

After finishing the both edge stitching process, the inside out process is subsequently performed.

[Turn over process]
In the inside-out process, as shown by arrow _A5 in FIG. 16(a), one open end of the cylindrically sewn outer material 10 and lining material 20 (in the figure, the open end on the lower side of the paper surface) is turned. , a step of turning over the outer material 10 and the lining 20 by introducing it into the inside of the cylinder composed of the outer material 10 and the lining 20 and pulling it out from the other opening end (the upper opening end toward the paper surface in the figure) is. As a result, as shown in FIG. 17, the tube composed of the outer material 10 and the lining material 20 is turned inside out. FIG. 17 is a diagram showing the state of the outer material 10 and the lining material 20 after the inside-out step in the manufacturing method of the multi-layer underwear fabric of the second embodiment. FIG. 17(a) shows the state of the multi-layered underwear fabric viewed from the front surfaces 11A and 12A of the outer material 10, and FIG. is shown.

Before performing the turning over process, as shown in FIG. ), and the front surfaces 11A, 12A of the outer material 10 and the front surfaces 21A, 22A of the lining 20 are not exposed to the outside (the front surfaces 11A, 12A, 21A, 22A are the inner circumference of the cylinder face). On the other hand, after performing the inside-out process, as shown in FIG. 21A and 22A are the outer peripheral surfaces of the cylinder), and the back surfaces 11B and 12B of the outer material 10 and the back surfaces 21B and 22B of the lining 20 are not exposed to the outside (the back surfaces 11B, 12B, 21B and 22B are not exposed to the outside). is the inner peripheral surface of the cylinder).

In addition, before performing the inside-out process, as shown in FIG. 16, the edges of the edge α ₁ of the outer fabric 10 and the edge β ₁ of the lining 20 are exposed to the outside. The edges of the edge _α2 of the outer material 10 and the edge _β2 of the lining 20 are also exposed to the outside. On the other hand _, after performing the inside-out process _, as shown in FIG. Edges are hidden. Similarly, the edges of the edge α ₂ of the outer material 10 and the edge β ₂ of the lining 20 are also folded back inside the cylinder to hide the edges. The edges of the edges α ₁ and α ₂ of the outer material 10 and the edges β ₁ and β ₂ of the lining 20 are usually the cut ends of the cut fabric. , these cut ends can be hidden inside the tube to not only give a neat appearance, but also to prevent these cut ends from fraying.

After the inside-out process is finished, the three-point sewing process is performed.

[Three-point sewing process]
In the three-point sewing process, as shown in FIG. 10, the edge α ₁ on one side of the outer material 10 and the edge β ₁ on one side of the lining 20 are sewn together at the suture line S ₇ (FIG. 16) in the both edge sewing process. ), three-point sewing is performed at the suture line S ₉ on the inner side (edges α ₂ and β ₂ ), and the edge α ₂ on the other side of the outer material 10 and the edge β ₂ on the other side of the lining 20 and are three-point stitched at a suture line _S10 inside (closer to the edges _α2 and _β2 ) than the suture line _S8 (see FIG. 16) in the both edge suturing step. Since the details are substantially the same as the three-point stitching process for the multi-layer underwear fabric of the first embodiment, the description is omitted. In this example, the upper edge portion of the outer material 10 and the upper edge portion of the lining material 20 are also three-point sewn along the suture line _S11 .

After completing the three-point stitching process, the manufacturing of the double-layer underwear fabric of the second embodiment is completed.

10 Outer fabric (decorative fabric)
10A Front surface of outer surface 10B Back surface of outer surface 11 First outer surface 11A Front surface of first outer surface 11B Back surface of first outer surface 12 Second outer surface 12A Front surface of second outer surface 12B Back surface of second outer surface 13 Scallop (rim decoration)
20 Lining (elastic fabric)
20A Front side of lining 20B Back side of lining 21 First lining 21A Front side of first lining 21B Back side of first lining 22 Second lining 22A Front side of second lining 22B Back side of second lining 100 Brassiere 101 Back Part 200 Shorts 201 Side part 202 Front body 203 Back body 204 Crotch
S ₁ Suture line in the first suture process S ₂ Suture line in the second suture process S ₃ Suture line in the three-point stitch process (one side)
Suture line (other side) in _S4 three-point sewing process
S ₅ Suture line in the outer sewing process S ₆ Suture line in the lining sewing process S ₇ One side suture line in both edge suture process S ₈ Other side suture line in both edge suture process S ₉ Suture in three-point sewing process line (one side)
S ₁₀ Suture line (other side) in the three-point sewing process
S ₁₁ Suture line (upper edge) in the three-point sewing process
α ₁ edge on one side of outer material α ₂ edge on other side of outer material β ₁ edge on one side of lining β ₂ edge on other side of lining γ ₁ connecting edge between first and second outer materials γ ₂ Connecting edges of the first and second linings

Claims (5)

An edge α ₁ on one side of the outer material and an edge β ₁ on one side of the lining are sewn together,
By sewing the edge α ₂ on the other side of the outer material and the edge β ₂ on the other side of the lining,
A method for producing a multi-layer underwear fabric for obtaining a multi-layer fabric for underwear in which a front material and a lining material are integrated,
As the outer material, using a decorative fabric with a fringe on the edge α ₁ ,
While forming almost the entire lining with elastic fabric,
The outer material and the lining material are placed in an open state so that their back surfaces face the same side, while the edge part β 1 of the lining material _overlaps the back surface side of the edge part α 1 of the outer material _. a single polymerization step;
a first stitching step of stitching the edge _α1 of the outer material and the edge β1 of the lining along the suture line inside the portion of the outer material that is _trimmed ;
A second polymerization step in which the edge _β2 of the lining and the edge α2 of the outer material are overlapped by folding the outer material to the front side of the lining _along the suture line in the first sewing step;
A second stitching step of stitching the edge α ₂ of the outer material and the edge β ₂ of the lining material in a state of overlapping each other to form the outer material and the lining material into a hollow cylindrical shape;
an inside-out process of turning over the cylindrical outer material and the lining material;
A method for producing a multilayer fabric for underwear, characterized by going through .
2. The method for producing a multi-layered underwear fabric according to claim 1, wherein the edging is scalloped..
After the turning process,
The outer edge α ₁ and the lining edge β ₁ are sewn at three points inside the suture line in the first sewing step, and the outer edge α ₂ and the lining edge β ₂ are sewn together in the second sewing process. 3. The method for producing a multi-layered underwear fabric according to claim 1 or 2, further comprising a three-point sewing step of performing three-point sewing on the inner side of the suture line in the two-stitching step.
Using lace fabric as the outer material,
4. The method for producing a multi-layer underwear fabric according to any one of claims 1 to 3, wherein power net or bare cotton sheeting is used as the lining.
5. A method for manufacturing underwear using the multilayer fabric for underwear obtained by the manufacturing method according to any one of claims 1 to 4 .

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