Method for producing intelligent textiles

Abstract

The conductive wire is sewed from a first point located outside the segment region set on the sheet toward a second point located on the segment region. A section is formed in the section region by sewing the embroidery portion of the conductive thread with the second point as a starting point. The series of steps are executed without finishing the sewing of the conductive wire and cutting the conductive wire.

Description

Technical Field

[0001] The present disclosure relates to a method for producing smart textiles using a sewing machine. The smart textiles have a substrate composed of an insulating sheet and a conductive thread sewn on the substrate. Background Art

[0002] In the present disclosure, in a "smart textile", a portion of an insulating sheet is provided with a portion of a conductive thread. Thus, a fabric structure (textile) that functions as an electronic component or circuit or an assembly including the fabric structure is formed. In the smart textile, the conductive thread is sewn onto a substrate composed of an insulating sheet. For example, in Japanese Patent Publication No. 2021-094280, embroidery of the conductive thread is performed by a sewing machine. Summary of the invention

[0003] Problem that the invention aims to solve When any type of sewing including embroidery is performed using a sewing machine, a lump of thread entangled may be formed at the beginning of sewing. This lump is called various names such as "bird's nest", "thread ball", "thread knot", etc., and is referred to as "bird's nest" in the present disclosure. For example, the front end of the thread that does not constitute the sewing stitch is entangled in the stitch sewn during sewing, thereby generating the bird's nest.

[0004] The bird's nest is made of conductive wire. Therefore, if it comes into contact with other components and / or conductors, it may cause a short circuit and / or leakage in the smart textile. Therefore, in the past, when smart textiles were produced using sewing machines, it was necessary to check whether there was a bird's nest. If there was a bird's nest, additional work was required to remove the bird's nest.

[0005] In more detail, a bird's nest can be formed due to the conductive thread being entangled in the sewing stitches. The entangled conductive thread is separated from the sewing stitches. In this operation, the conductive thread entangled in the sewing stitches is often cut. Then, the conductive thread is pulled out from the sewing stitches. In addition, the operation needs to be performed carefully in a manner that does not adversely affect the function as an electronic component or circuit and does not cause the sewing stitches of the conductive thread to become scattered, deformed, or scratched. Therefore, it becomes a major cause of the deterioration of the production efficiency and / or yield of smart textiles.

[0006] The present disclosure relates to a technology capable of reducing additional work when producing smart textiles using a sewing machine.

[0007] Means used to solve problems According to one feature of the present disclosure, a method for producing smart textiles is provided, wherein a sewing machine is used to produce smart textiles formed by forming a sewn portion of a conductive thread on a substrate formed of an insulating sheet. The production method includes a first sewing step and an embroidery step. In the first sewing step, a segment area formed with segments is set on the sheet, and the segment is a sewn portion that functions as an element. The conductive thread is sewn from a first point outside the segment area toward a second point on the segment area. In the embroidery step, the embroidery portion of the conductive thread is sewn with the second point as the starting point. A series of steps from the first sewing step to the embroidery step are performed without performing a process of ending the sewing of the conductive thread and cutting the conductive thread.

[0008] According to the above production method, the position where a bird's nest may be generated, i.e., the first point where sewing by the sewing machine starts, is located at a position separated from the segment area. Therefore, even if a bird's nest is generated at the first point, the possibility of the bird's nest contacting the segment is reduced. As a result, when producing smart textiles using a sewing machine, the necessity of performing additional work can be reduced. Additional work is the work of confirming the presence or absence of a bird's nest in the smart textile. Or the work of removing the bird's nest if it exists.

[0009] In the above production method, the first point is used as the part where sewing of the sewing machine starts. The first point can be set at a position separated from the segment area by a distance greater than the size of the bird's nest that can be generated at the first point.

[0010] According to the above production method, even if a bird's nest is generated at the first point where sewing by the sewing machine starts, the bird's nest can be prevented from contacting the segment. Thus, when producing smart textiles using a sewing machine, the need for additional work is reduced.

[0011] The production method may further include a cutting step described below. In the cutting step, the conductive wire extending from the segment toward the outside of the segment area is cut off. Thus, the conductive wire constituting the segment can be insulated and separated from the conductive wire located outside the segment area.

[0012] The part where sewing starts is where a bird's nest may be formed. According to the above production method, regardless of whether a bird's nest is actually formed at the part where sewing starts, it is insulated and separated from the section of the conductive wire. As a result, when using a sewing machine to produce smart textiles, the need for additional work is reduced.

[0013] The above production method may also include a second sewing step and a thread cutting step described later. In the second sewing step, the conductive thread is sewn from a third point toward a fourth point outside the segment area, the third point being a point on the segment area as a sewing end point of the embroidery portion. In the thread cutting step, the sewing of the conductive thread is terminated at the fourth point and the conductive thread is cut. There is a series of steps from the first sewing step to the second sewing step via the embroidery step. The series of steps is performed without performing the process of terminating the sewing of the conductive thread and cutting the conductive thread.

[0014] In the case of any kind of sewing including embroidery using a sewing machine, it is possible for a sewing thread to extend from the portion where the sewing ends. This extension is referred to by various names such as "thread ends", "residual thread", "empty loop", etc., and is referred to as "thread ends" in the present disclosure. Among them, in the case of producing smart textiles using a sewing machine, the thread ends are composed of conductive threads. Therefore, when the thread ends come into contact with other elements and / or conductors, there is a possibility that they may become the cause of short circuits and / or leakage in the smart textiles. However, according to the above-mentioned production method, the portion where the sewing of the sewing machine ends, which is the position where the thread ends may be generated, is set at a position separated from the segment area. Therefore, the possibility of the thread ends extending from the portion where the sewing ends coming into contact with the segment is reduced. As a result, the possibility of short circuits and / or leakage in the smart textiles can be reduced.

[0015] In the above production method, the fourth point may be set at a position separated from the segment region by a prescribed distance. The prescribed distance is longer than the length of the end of the conductive wire extending from the fourth point through the wire cutting step.

[0016] According to the above production method, the thread end extending from the fourth point, which is the sewing end point of the sewing machine, can be prevented from contacting the segment, thereby reducing the possibility of short circuit and / or leakage in the smart textile.

[0017] In the above production method, a processed area and a boundary of the processed area can be set on the sheet, and the processed area is an area including the segment area and processed as a base material. In this case, the first point is set outside the set processed area. In addition, in the first sewing step, the conductive thread is sewn from the first point across the above boundary toward the second point. Moreover, by cutting at least a part of the above boundary as a cutting line, the cutting and cutting steps of the processed area are performed together.

[0018] According to the production method, the insulation separation of the sewn part and the cutting of the processed area are performed at the same time, thereby improving the production efficiency when producing smart textiles.

[0019] In the above production method, there may also be a second sewing step and a thread cutting step described later. In the second sewing step, the conductive thread is sewn from a third point toward a fourth point outside the segment area, and the third point is a point on the segment area that serves as the sewing end point of the embroidery portion. In the thread cutting step, the sewing of the conductive thread is terminated and the conductive thread is cut at the fourth point. A series of steps are performed from the first sewing step to the second sewing step via the embroidery step. A series of steps are performed without terminating the sewing of the conductive thread and cutting the conductive thread. A processed area and a boundary of the processed area are set on the sheet, and the processed area is an area that includes the segment area and is processed as a substrate. The fourth point is set outside the processed area. In the second sewing step, the conductive thread is sewn from the third point across the above boundary toward the fourth point. By cutting at least a portion of the above boundary as a cutting line, the steps of cutting off and cutting off the processed area are performed together.

[0020] According to the above production method, the possibility of the thread end extending from the sewing end of the sewing machine contacting the section is reduced. As a result, the possibility of short circuit and / or leakage in the smart textile can be reduced. In addition, the insulation separation of the sewing part and the cutting of the processed area are performed together. As a result, the production efficiency when producing smart textiles can be improved.

[0021] In the above production method, a crossover without a loop which is a portion generated by winding the conductive thread during sewing of the conductive thread is provided at a portion crossing the cutting point of the conductive thread in the cutting step.

[0022] According to the production method, the coil that can make the thread entangled together is not located at the part that straddles the cutting point of the conductive thread during sewing by the sewing machine, thereby reducing the possibility that the cutting of the conductive thread in the cutting step becomes difficult due to the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a surface diagram showing a smart textile produced by the method for producing a smart textile according to the first embodiment of the present disclosure.

[0024] Figure 2 It is used to illustrate the production Figure 1 An illustration of the method for smart textiles.

[0025] Figure 3 It is used to illustrate the production Figure 1 An illustration of the method for smart textiles.

[0026] Figure 4 It is used to illustrate the production Figure 1 An illustration of the method for smart textiles.

[0027] Figure 5 It is used to illustrate the production Figure 1 An illustration of the method for smart textiles.

[0028] Figure 6 It is used to illustrate the production Figure 1 An illustration of the method for smart textiles.

[0029] Figure 7 It is used to illustrate the production Figure 1 An illustration of the method for smart textiles.

[0030] Figure 8 is a surface diagram showing a smart textile produced by the method for producing a smart textile according to the second embodiment of the present disclosure.

[0031] Fig. 9 It is used to illustrate the production Figure 8 An illustration of the method for smart textiles.

[0032] Fig.10 It is used to illustrate the production Figure 8 An illustration of the method for smart textiles.

[0033] Fig.11 It is used to illustrate the production Figure 8 An illustration of the method for smart textiles.

[0034] Fig.12 It is used to illustrate the production Figure 8 An illustration of the method for smart textiles.

[0035] Fig.13 is a surface diagram showing a smart textile produced by the method for producing a smart textile according to the third embodiment of the present disclosure.

[0036] Fig.14 It is used to illustrate the production Fig.13 An illustration of the method for smart textiles.

[0037] Fig.15 It is used to illustrate the production Fig.13 An illustration of the method for smart textiles.

[0038] Fig.16 It is used to illustrate the production Fig.13 An illustration of the method for smart textiles.

[0039] Fig.17 It is used to illustrate the production Fig.13 An illustration of the method for smart textiles.

[0040] Fig.18 It is used to illustrate the production Fig.13An illustration of the method for smart textiles.

[0041] Fig.19 It is used to illustrate the production Fig.13 An illustration of the method for smart textiles. DETAILED DESCRIPTION

[0042] <First Embodiment> Mainly through Figure 1 The smart textile 110 produced by the production method of the first embodiment is described. The smart textile 110 has a sheet 120 made of an insulating nonwoven fabric as a base material 110A. Sewn portions 111 and 112 are formed in two segment areas 111A and 112A set in the base material 110A, respectively. The smart textile 110 is used as a substrate for mounting, for example, other electronic components (not shown).

[0043] Sewing parts 111, 112 are formed on substrate 110A by a flat-sewing embroidery machine (not shown), which is a type of sewing machine. Thus, pads (Pads) are formed that are insulated and separated from other structures. These pads are planar embroidery parts. Other electronic components are electrically connected to the pads by bonding or sewing. That is, the pads function as electrical components (base, contacts, joints). Sewing parts 111, 112 are equivalent to "segments" in the present disclosure.

[0044] In this embodiment, each segment region 111A, 112A has a surface shape of the same size. Figure 1 As shown, the segment regions 111A and 112A are rectangular, but may be other shapes such as circular. Each sewn portion 111 and 112 is formed to fill the entirety of the corresponding segment region.

[0045] exist Figure 1 In the figure, each sewing part 111, 112 is depicted as an embroidery part sewn by the "satin" sewing method in flat sewing. However, the sewing method of each sewing part 111, 112 can be any sewing method that can form a planar embroidery part, such as the "tatami" sewing method or the "cross" sewing method.

[0046] Then, mainly through Figures 2 to 7 , illustrating an example of a method for producing the above-mentioned smart textile 110.

[0047] When producing the smart textile 110, first, a sewing machine with an embroidery function is prepared. In this embodiment, as the sewing machine, a flat stitch embroidery machine (not shown) capable of switching between various sewing methods including "flat stitch", "satin", "tatami" and "cross" is prepared.

[0048] The lockstitch embroidery machine is a device capable of automatically performing any of the following skipped stitch processing and stitch length change processing. In the skipped stitch processing, the thread for sewing (see Figure 2 The conductive thread 130) is sewn from the fabric (refer to Figure 2 The relative position of the sewing needle to the fabric is moved while the sheet 120 is pulled out. In the stitch length change process, the loop generated by the winding of the sewing thread is partially changed during the sewing of the sewing thread (refer to Figure 2 The stitches set between the stitches 131 of Figure 2 The length of stitch 131A).

[0049] The lockstitch embroidery machine has an automatic thread trimming function that automatically cuts off the thread connected to the fabric after the sewing of the thread is completed. If the thread is cut by the automatic thread trimming function, as is known, a predetermined length of thread will remain in the fabric as a thread end (see Figure 6 Thread end 130B).

[0050] Then, if Figure 2 As shown in FIG. 1 , a sheet 120 made of an insulating nonwoven fabric is prepared. The entire sheet 120 is processed into a substrate 110A (see FIG. 1 ). Figure 1 ) is a processed area 121. In addition, two segment areas 111A and 112A are set in the processed area 121. Figure 2 In FIG. 1 , the boundaries of the segment areas 111A and 112A are depicted as imaginary structures without entities. However, these boundaries may also be physical marks marked by tools such as "painting sheets" or "chalk".

[0051] Next, using the above-mentioned sewing machine, the first point 120A located outside the segment area 111A is used as the sewing start point. Then, the conductive thread 130 is sewn in a linear manner toward the second point 121A located on the segment area 111A. In the present embodiment, the linear sewing of the conductive thread 130 is performed in a manner of forming a straight line by a "flat stitch" sewing method. This step is equivalent to the "first sewing step" in the present disclosure. In addition, the linear sewing of the conductive thread 130 can also be performed in a manner of forming a curve.

[0052] In the first sewing step, the first point 120A is set as the starting point of sewing. Specifically, the position separated from the segment area 111A by a distance longer than the size of the bird's nest 130A that can be imagined is set as the first point 120A. That is, the first point 120A is set at a separated position where the bird's nest 130A does not contact the sewing part 111 in the segment area 111A. When sewing the conductive thread 130, any of the above-mentioned skipping stitch processing or stitch length change processing is performed. Then, a crossover 130C in which the coil 131 is not formed is set in the portion crossing the boundary of the segment area 111A. In the present embodiment, the length of the crossover 130C is set so that the number of coils 131 formed in the first sewing step is the amount of several stitches.

[0053] Next, the sewing method of the sewing machine is changed to a sewing method that can form a planar embroidery part. For example, it is changed to a "satin", "tatami" or "cross" sewing method. Figure 3 As shown, the second point 121A is used as a starting point to sew the planar embroidery portion of the conductive thread 130. Thus, the sewn portion 111 is formed in the segment area 111A. This corresponds to the "embroidery step" in the present disclosure.

[0054] Then, if Figure 4 As shown, the linear sewing of the conductive thread 130 is performed from the third point 121B. The third point 121B is located in the segment area 111A in the processed area 121. The sewing is performed in a manner toward the fourth point 120B. The fourth point 120B is located outside the segment area 111A and serves as the sewing end point of the embroidery part of the sewing part 111. In the present embodiment, the linear sewing of the conductive thread 130 is performed in a manner formed into a straight line by a "flat stitch" sewing method. This step is equivalent to the "second sewing step" of the present disclosure. In addition, the linear sewing of the conductive thread 130 can also be performed in a manner of forming a curve.

[0055] In the second sewing step, the fourth point 120B, which is the end point of sewing, is set at a position separated from each segment area 111A, 112A by a predetermined distance. The predetermined distance is greater than the thread end 130B that can be achieved by the automatic thread trimming function of the sewing machine (refer to Figure 6 ) is long. Thereby, it is possible to avoid the thread end 130B from contacting the sewing portion 111 in the segment area 111A. When sewing the conductive thread 130, any one of the above-mentioned skipping stitch processing and the above-mentioned stitch length change processing is performed. Then, a crossover line 130C in which no coil 131 is formed is set in the portion crossing the boundary of the segment area 111A. In the present embodiment, the length of the crossover line 130C is set so that the number of coils 131 formed in the second sewing step is the amount of several stitches.

[0056] The manufacturing method includes a series of steps from the first sewing step to the second sewing step via the embroidery step, and the series of steps are performed without completing the sewing of the conductive thread 130 and cutting the conductive thread 130 .

[0057] When the sewing of the conductive thread 130 reaches the fourth point 120B, the sewing of the conductive thread 130 is terminated. Then, a thread cutting step is performed to cut the conductive thread 130. At this time, the conductive thread 130 is cut by the automatic thread cutting function of the sewing machine. Thus, a thread end 130B of a predetermined length is formed at the fourth point 120B. The thread end 130B extends from the fourth point 120B.

[0058] Then, if Figure 5 As shown, the same steps as the series of steps from the first sewing step to the embroidery step to the second sewing step are performed on the segment area 112A. Thus, the sewing portion 112 is formed in the segment area 112A. The segment area 112A also has various structures corresponding to the segment area 111A.

[0059] Then, if Figure 6 As shown, the conductive wires 130 extending from the sewn portions 111 and 112 toward the outside of the segment areas 111A and 112A are cut. Thus, the conductive wires 130 constituting the sewn portions 111 and 112 can be insulated and separated from the conductive wires 130 located outside the segment areas 111A and 112A. This step is equivalent to the "cutting step" of the present disclosure.

[0060] In the cutting step, Figure 6 As shown, the crossover line 130C extending from each sewn portion 111, 112 is cut at a cutting point 122A set on the boundary of each segment area 111A, 112A. This cutting is performed carefully so as not to damage each sewn portion 111, 112 and the sheet 120.

[0061] In addition, Figure 6 In the embodiment, the cutting of the conductive wire 130 is described as a manual operation performed using "scissors". However, the cutting of the conductive wire 130 can be performed using various tools such as "Western scissors" or "knife". In addition, the cutting of the conductive wire 130 can also be performed automatically by a machine.

[0062] Then, if Figure 7As shown, the conductive thread 130 insulated and separated from each sewing portion 111, 112 by the cutting step is pulled out from the sheet 120. At this time, the conductive thread 130 to be pulled out is in a state of being sewn to the sheet 120 by only the coil 131 of the amount of several stitches. Therefore, the conductive thread 130 is easily pulled out from the sheet 120 and removed. In this embodiment, in order to reduce the possibility of damage to each sewing portion 111, 112, the conductive thread 130 is pulled out from the opposite side of these sewing portions 111, 112. Figure 7 In the embodiment of the present invention, the conductive wire 130 is pulled out toward the side where the bird's nest 130A or the wire end 130B is located.

[0063] When the conductive wire 130 is pulled out, the sheet 120 becomes Figure 1 In the state shown, the smart textile 110 is completed.

[0064] As described above, the smart textile 110 is produced. According to this method, the position where the bird's nest 130A is likely to be generated, that is, the sewing start portion of the sewing machine is located at a position separated from each segment area 111A, 112A. Therefore, even if the bird's nest 130A is generated in this portion, the possibility of the bird's nest 130A contacting each sewing portion 111, 112 is reduced. As a result, when the smart textile 110 is produced using a sewing machine, the necessity of additional work can be reduced. The additional work is, for example, an operation of confirming whether there is a bird's nest 130A in the smart textile 110. Or, if there is a bird's nest 130A, it is an operation of removing it.

[0065] In addition, there is a possibility that a bird's nest 130A is generated at the first point 120A, which is the sewing start point of the sewing machine. However, in this case, according to the method of producing the smart textile 110, the bird's nest 130A can be prevented from contacting the sewing parts 111 and 112. Thus, the necessity of additional work can be reduced.

[0066] In addition, the sewing start portion of the sewing machine is a position where the bird's nest 130A may be generated. According to the above method, regardless of whether the bird's nest 130A is actually generated at the sewing start portion of the sewing machine, the sewing start portion of the sewing machine is insulated and separated from the sewing parts 111 and 112 of the conductive thread 130. Thus, the necessity of additional work can be reduced.

[0067] In addition, according to the above method, the bird's nest 130A is not formed in the segment areas 111A and 121A (sewn parts 111 and 112). Therefore, it is possible to avoid the conductive thread 130 from being scattered, deformed, or damaged, which is likely to occur during the removal of the bird's nest 130A. Therefore, it is possible to suppress the adverse effects on the function of the smart textile 110 as an electronic component or circuit. Therefore, the reliability of the product quality of the produced smart textile 110 can be improved.

[0068] In addition, according to the above method, the position where the thread end 130B may be generated, that is, the sewing end portion of the sewing machine is located at a position separated from each segment area 111A, 112A. Therefore, the possibility of the thread end 130B extending from the above sewing end portion contacting each sewing part 111, 112 is reduced. As a result, in the smart textile 110 produced by the sewing machine, the possibility of short circuit and / or leakage can be reduced.

[0069] In addition, according to the above method, the thread end 130B can extend from the fourth point 120B, which is the sewing end point of the sewing machine, so that the thread end 130B is prevented from contacting the segment areas 111A and 112A. As a result, in the smart textile 110, the possibility of short circuit and / or leakage can be further reduced.

[0070] In addition, according to the above method, the sewing end portion is insulated and separated from the sewing portions 111 and 112 of the conductive thread 130. Therefore, in the smart textile 110, the possibility of short circuit and / or leakage can be further reduced.

[0071] In addition, during sewing with a sewing machine, there is a possibility that a coil 131 is formed around the conductive thread 130. However, according to the above method, the coil 131 can be prevented from being located at a portion that straddles the cutting point 122A of the conductive thread 130. Thus, the possibility that the conductive thread 130 is difficult to cut in the cutting step due to the coil 131 can be reduced.

[0072] <Second Embodiment> Then, mainly through Figure 8 The smart textile 210 produced by the method for producing a smart textile according to the second embodiment of the present disclosure is described. The smart textile 210 has a sheet 220 (see FIG. 2 ) made of an insulating nonwoven fabric. Fig. 9 ) is used as the base material 210A. A segment area 211A is set in the base material 210A. The sewing portion 211 is formed in the segment area 211A.

[0073] The sewing portion 211 is formed on the base material 210A by a flat-sewing embroidery machine (not shown), which is a type of sewing machine. Thus, a pad portion is formed that is insulated and separated from other structures. The pad portion is a planar embroidery portion. The sewing portion 211 is equivalent to a "segment" in the present disclosure.

[0074] In the present embodiment, the end portion of the conductive thread 230 constituting the sewn portion 211 extends outside the segment region 211A. The conductive thread 230 is sewn to the base material 210A by a "flat stitch" sewing method in flat sewing.

[0075] In addition, Figure 8In the figure, the sewing portion 211 is depicted as an embroidery portion sewn by a "satin" sewing method in a flat seam. However, the sewing method of the sewing portion 211 can be any sewing method that can constitute a planar embroidery portion, such as a "tatami" sewing method or a "cross" sewing method.

[0076] Then, mainly through Figures 9 to 12 An example of a method for producing the above-mentioned smart textile 210 is described. When producing the smart textile 210, first, a sewing machine with an embroidery function is prepared.

[0077] like Fig. 9 As shown, a sheet 220 made of an insulating nonwoven fabric is prepared. Then, the sheet 220 is processed into a base material 210A (see Figure 8 ) of the processed region 221, the boundary 222 of the processed region 221, and the segment region 211A. At this time, the segment region 211A is set so that its entirety is included in the processed region 221. Fig. 9 In the figure, the boundary 222 of the processed area 221 and the boundary of the segment area 211A are depicted as imaginary structures without entities. However, these boundaries may also be physical marks marked by tools such as "painting sheets" or "chalks".

[0078] Next, the sewing machine is used to set the first point 220A located outside the processed area 221 (also outside the segment area 211A) as the sewing start point. Then, the conductive thread 230 is sewn linearly from the first point 220A across the boundary 222 toward the second point 221A located on the segment area 211A in the processed area 221. In the present embodiment, the conductive thread 230 is sewn linearly by a "flat stitch" sewing method in a straight line. This step is equivalent to the "first sewing step" in the present disclosure.

[0079] In the first sewing step, the first point 220A is set as the starting point of sewing. Specifically, the position separated from the boundary 222 and the segment area 211A by a distance longer than the size of the bird's nest 230A that can be imagined is set as the first point 220A. That is, the first point 220A is set at a separated position where the bird's nest 230A cannot contact the sewing part 211 in the segment area 211A. When sewing the conductive thread 230, any of the above-mentioned skipping stitch processing or stitch length change processing is performed. Then, a crossover line 230C without forming a coil 231 is set in the part crossing the boundary 222.

[0080] Next, the sewing method of the sewing machine is changed to a sewing method that can form a planar embroidery part. For example, it is changed to a "satin", "tatami" or "cross" sewing method. Fig.10As shown, the second point 221A is used as a starting point to sew the planar embroidery portion of the conductive thread 230. Thus, the sewn portion 211 is formed in the segment area 211A.

[0081] Next, the sewing method of the sewing machine is changed to a sewing method capable of linear sewing (a "flat stitch" sewing method in this embodiment). Fig.11 As shown, the conductive thread 230 is sewn linearly from the third point 221B. The third point 221B is a point in the processed area 221 (also in the segment area 211A) as the sewing end point of the sewing portion 211. The sewing is performed linearly in a manner that crosses the boundary 222 and moves toward the fourth point 220B located outside the processed area 221 (also outside the segment area 211A). This step is equivalent to the "second sewing step" of the present disclosure.

[0082] In the second sewing step, the fourth point 220B, which is the end point of the sewing, is set at a position separated from the boundary 222 and the segment area 211A by a specified distance. The specified distance is longer than the length of the thread end 230B that can be achieved by the automatic thread cutting function of the sewing machine. Thus, it is possible to avoid the thread end 230B from contacting the sewing portion 211 in the segment area 211A. In the above sewing, any one of the above-mentioned skip stitch processing or stitch length change processing is performed. In addition, a crossover line 230C that does not form a coil 231 is set in the portion that crosses the boundary 222.

[0083] Among them, there is a series of steps from the first sewing step to the second sewing step via the embroidery step, and the series of steps are performed without completing the sewing of the conductive thread 230 and cutting the conductive thread 230 .

[0084] When the sewing of the conductive thread 230 reaches the fourth point 220B, the sewing of the conductive thread 230 is terminated. Then, a thread cutting step is performed to cut the conductive thread 230. At this time, the conductive thread 230 is cut by the automatic thread cutting function of the sewing machine. Thus, a thread end 230B of a predetermined length is formed at the fourth point 220B. The thread end 230B extends from the fourth point 220B.

[0085] Then, if Fig.12 As shown, the sheet 220 is cut using all the boundaries 222 as cutting lines. Thus, the processed area 221 is cut off from the other parts of the sheet 220. The cutting is performed by cutting the crossover line 230C of the conductive line 230 crossing the boundary 222 together with the sheet 220. The conductive line 230 extends from the sewn portion 211 toward the outside of the processed area 221. In other words, the conductive line 230 (see FIG. 2 ) is cut at the cutting point 222A on the boundary 222. Fig.11 ) to perform the above cutting.

[0086] Thus, the conductive wires 230 constituting the sewn portion 211 are insulated and separated from the conductive wires 230 located outside the processed area 221. That is, the cutting of the conductive wires 230 described above corresponds to the "cutting step" of the present disclosure. That is, the crossover wire 230C (refer to Fig.11 ) The portion of the conductive line 230 that crosses the cutting point 222A in the above-mentioned cutting step.

[0087] In addition, the processed area 221 forming the sewn portion 211 is cut off by the above-mentioned cutting to form the base material 210A. That is, by cutting with all the boundaries 222 as the cutting lines, the cutting off of the processed area 221 and the above-mentioned cutting step are performed together, thereby completing the smart textile 210.

[0088] According to the above method, the position where the bird's nest 230A is likely to be generated, that is, the sewing start portion of the sewing machine, is located at a position separated from the segment area 211A. Therefore, even if the bird's nest 230A is generated in this portion, the possibility of the bird's nest 230A contacting the segment (sewing portion 211) is reduced. As a result, when the smart textile 210 is produced by the sewing machine, the necessity of additional work can be reduced. The additional work is, for example, a work of checking whether there is a bird's nest 230A in the smart textile 210. Or, if there is a bird's nest 230A, it is a work of removing it.

[0089] In addition, there may be a situation where a bird's nest 230A is generated at the first point 220A as the sewing start point of the sewing machine. However, in this case, according to the above-mentioned production method, it is possible to avoid the contact between the bird's nest 230A and the sewing part 211. Thus, the necessity of additional work can be reduced.

[0090] In addition, the sewing start portion of the sewing machine is a position where the bird's nest 230A may be generated. However, according to the above method, regardless of whether the bird's nest 230A is actually generated at the sewing start portion of the sewing machine, the sewing start portion of the sewing machine is insulated and separated from the section (sewing part 211). Thus, the necessity of additional work can be reduced.

[0091] In addition, according to the above method, the bird's nest 230A is not formed in the segment area 211A (sewn portion 211). Therefore, it is possible to avoid the conductive thread 230 from being scattered, deformed, or damaged, which is likely to occur when removing the bird's nest 230A. Therefore, it is possible to suppress the adverse effects on the function of the smart textile 210 as an electronic component or circuit. Therefore, the reliability of the product quality of the produced smart textile 210 can be improved.

[0092] In addition, according to the above method, the position where the thread end 230B is generated, that is, the sewing end portion of the sewing machine is located at a position separated from the segment area 211A. Therefore, the possibility of the thread end 230B extending from the sewing end portion contacting the segment (sewing portion 211) is reduced. As a result, in the smart textile 210 produced by the sewing machine, the possibility of short circuit and / or leakage can be reduced.

[0093] In addition, the thread end 230B can extend from the fourth point 220B, which is the sewing end point of the sewing machine. However, according to the above method, the thread end 230B is prevented from contacting the segment area 211A. As a result, in the smart textile 210, the possibility of short circuit and / or leakage can be further reduced.

[0094] In addition, according to the above method, the position where the thread end 230B is generated, that is, the sewing end portion of the sewing machine is insulated and separated from the section (sewing part 211). Therefore, in the smart textile 210 produced by the sewing machine, the possibility of short circuit and / or leakage can be further reduced.

[0095] In addition, according to the above method, the insulation separation of the sewn portion 211 and the cutting of the processed area 221 are performed at the same time. As a result, the production efficiency when producing the smart textile 210 can be improved.

[0096] In addition, during sewing with a sewing machine, there is a possibility that a coil 231 is formed around the conductive thread 230. However, according to the above method, the coil 231 can be prevented from being located at a portion that straddles the cutting point 222A of the conductive thread 230. Thus, the possibility that the conductive thread 230 in the above-mentioned cutting step becomes difficult due to the coil 231 can be reduced.

[0097] <Third Embodiment> Then, mainly through Fig.13 , a smart textile 310 produced by the method for producing a smart textile according to the third embodiment of the present disclosure is described. The smart textile 310 has a sheet 320 (see Fig.19 ) is used as the base material 310A. Two types of sewn portions 311 and 312 are formed on the base material 310A.

[0098] The sewing portion 311 is formed on the base material 310A by a lockstitch embroidery machine (not shown) which is a type of sewing machine. The sewing portion 311 has two patterns 3111 and 3112 which are insulated and separated from each other. In the present embodiment, the patterns 3111 and 3112 are formed on the segment areas 3111A and 3112A respectively along the segment areas 3111A and 3112A which are set to be strip-shaped.

[0099] These patterns 3111 and 3112 are respectively linear embroidery parts sewn by flat stitching of conductive thread 330. They function as electrical wiring connected to other electronic components installed in smart textile 310. That is, patterns 3111 and 3112 are equivalent to "segments" in the present disclosure.

[0100] exist Fig.13 In the figure, each pattern 3111, 3112 is depicted as an embroidery portion sewn by the sewing method of "flat stitch" in flat sewing. However, the sewing method of each pattern 3111, 3112 can be any sewing method that can constitute a linear embroidery portion.

[0101] The sewing portion 312 is a structure formed by sewing three mutually insulated and separated pads 3121, 3122, and 3123 on the base material 310A using the above-mentioned flat-sewing embroidery machine. In the present embodiment, the pads 3121, 3122, and 3123 are respectively formed in the segment areas 3121A, 3122A, and 3123A in a manner of filling the entirety of the segment areas 3121A, 3122A, and 3123A respectively set in the surface shape. Fig.13 The shape is rectangular, but it may be other surface shapes such as a circle.

[0102] These pad parts 3121, 3122, 3123 are planar embroidery parts sewn by flat sewing of the conductive thread 330. The pad parts 3121, 3122, 3123 are equivalent to the "segments" of the present disclosure.

[0103] In the present embodiment, the end portions of the conductive wires 330 constituting the pads 3121, 3122, and 3123 extend to the outside of the pads 3121, 3122, and 3123. The conductive wires 330 are sewn to the base material 310A by the above-mentioned "flat stitch" sewing method.

[0104] exist Fig.13 In the figure, each pad part 3121, 3122, 3123 is depicted as an embroidery part sewn by the "satin" sewing method in flat sewing. However, the sewing method of each pad part 3121, 3122, 3123 can be any sewing method that can form a planar embroidery part, such as the "tatami" sewing method or the "cross" sewing method.

[0105] Then, mainly through Figures 14 to 19 , an example of a method for producing the above-mentioned smart textile 310 is described. When producing the smart textile 310, first, a sewing machine with an embroidery function is prepared.

[0106] like Fig.14 As shown, a sheet 320 made of an insulating nonwoven fabric is prepared. Then, the sheet 320 is processed into a base material 310A (see Fig.13 ) of the processed area 321, the boundary 322 of the processed area 321, and the segment areas 3111A, 3112A, 3121A, 3122A, and 3123A. At this time, the segment areas 3111A, 3112A, 3121A, 3122A, and 3123A are all set so that they are included in the processed area 321 as a whole. Fig.14 In the figure, the boundary 322 of the processed area 321 and the boundaries of each segment area 3111A, 3112A, 3121A, 3122A, 3123A are depicted as imaginary structures without entities. However, these boundaries can also be physical marks marked by tools such as "painting sheets" or "chalks".

[0107] Next, the conductive thread 330 is sewn linearly from the first point 320A across the boundary 322 toward the second point 321A using the sewing machine. The first point 320A is located outside the processed area 321 and also outside the segment area 3121A. The second point 321A is located on the segment area 3121A in the processed area 321. The conductive thread 330 is sewn linearly by a "flat stitch" sewing method to form a straight line. This step is equivalent to the "first sewing step" of the present disclosure.

[0108] In the first sewing step, the first point 320A is used as the sewing start point. The first point 320A is set at a position separated from the boundary 322 of the segment area 3121A by a specified distance. The specified distance is a distance longer than the size of the bird's nest 330A that can be imagined. Thus, the position of the first point 320A makes the bird's nest 330A not contact the pad 3121 in the segment area 3121A. In addition, when sewing the conductive thread 330, any of the above-mentioned skipping stitch processing or stitch length change processing is performed. A crossover 330C in which the coil 331 is not formed is set in the portion crossing the sewing boundary 322 of the conductive thread 330.

[0109] Next, change the sewing method of the sewing machine to a sewing method that can form a planar embroidery part (for example, a "satin", "tatami" or "cross" sewing method). Fig.15 As shown, the second point 321A is used as a starting point to sew the planar embroidery portion of the conductive thread 330. Thus, the pad portion 3121 is formed in the segment area 3121A.

[0110] Next, the sewing method of the sewing machine is changed to a sewing method capable of linear sewing (a "flat stitch" sewing method in this embodiment). Fig.16As shown, the linear sewing of the conductive thread 330 is performed in a manner that the point that is the sewing end point of the pad portion 3121 crosses the boundary 322 toward the outside of the processed area 321 (also the outside of the segment area 3121A). At this time, any of the above-mentioned skip stitch processing or stitch length change processing is performed. As a result, a crossover line 330C that does not form a coil 331 is provided in the portion that crosses the boundary 322.

[0111] Then, if Fig.17 As shown, the linear sewing of the conductive thread 330 is performed from the outside of the processed area 321 (also the outside of the segment area 3122A) across the boundary 322 toward the segment area 3122A in the processed area 321. After that, the sewing method of the sewing machine is switched to a sewing method that can form a planar embroidery, and the planar embroidery part of the conductive thread 330 is sewn. Thus, the pad part 3122 is formed in the segment area 3122A. And, the series of processes performed after the pad part 3121 is formed in the segment area 3121A are repeated once, thereby forming the pad part 3123 in the segment area 3123A.

[0112] Thus, the processed area 321 is formed of the sewn portion 312 composed of the three pad portions 3121, 3122, and 3123. This corresponds to the "embroidery step" of the present disclosure.

[0113] The sewing end point of the embroidery part of the linear sewing part 312 of the conductive thread 330 is the third point 321B which is a point in the processed area 321 (also in the segment area 3123A). Then, the sewing is performed in a manner of crossing the boundary 322 from the third point 321B toward the fourth point 320B located outside the processed area 321. In the present embodiment, the linear sewing of the conductive thread 330 is performed in a manner of forming a straight line by the sewing method of the "flat stitch". This step is equivalent to the "second sewing step" of the present disclosure.

[0114] The sewing end point of the second sewing step is the fourth point 320B. The distance between the fourth point 320B and the boundary 322 and the distance between the fourth point 320B and each segment area 3111A, 3112A, 3121A, 3122A, 3123A is greater than the thread end 330B that can be achieved by the automatic thread trimming function of the sewing machine (refer to Fig.18 ) is long. Therefore, the thread end 330B does not contact the sewing parts 311, 312. In addition, when sewing the conductive thread 330, any one of the above-mentioned skipping stitch processing and the above-mentioned stitch length change processing is performed. Thus, a crossover line 330C that does not form a coil 331 is set in the part that crosses the boundary 322.

[0115] Here, a series of steps from the first sewing step to the second sewing step via the embroidery step are performed without completing the sewing of the conductive thread 330 and cutting the conductive thread 330 .

[0116] If the sewing of the conductive thread 330 is continued to the fourth point 320B, Fig.18 As shown, the sewing of the conductive thread 330 is completed. Then, a thread cutting step is performed to cut the conductive thread 330. At this time, the conductive thread 330 is cut by the automatic thread cutting function of the sewing machine. At this time, a thread end 330B of a predetermined length is formed at the fourth point 320B. The thread end 330B is formed in a state extending from the fourth point 320B.

[0117] Next, the same steps as the series of steps from the first sewing step to the embroidery step to the second sewing step are performed. Thus, the sewn portion 311 is formed in the processed area 321. The steps for forming the processed area 321 into a state where the sewn portion 311 is formed are the same as the steps for forming the sewn portion 312 into the processed area 321, except for the following (A) to (C).

[0118] (A) In the sewn portion 312 , the conductive thread 330 is sewn linearly from the first point 320A toward the second point 321A. In the sewn portion 311 , the conductive thread 330 is sewn linearly from the first point 320C toward the second point 321C.

[0119] (B) In the sewing section 312, the embroidery sections of the pad sections 3121, 3122, and 3123 are sewn after the sewing method of the sewing machine is changed to a sewing method capable of forming a planar embroidery section. In the sewing section 311, the embroidery sections of the patterns 3111 and 3112 are sewn without changing the sewing method of the sewing machine.

[0120] (C) The conductive thread 330 is sewn linearly from the third point 321B toward the fourth point 320B in the sewing portion 312. In the sewing portion 311, the conductive thread 330 is sewn linearly from the third point 321D toward the fourth point 320D.

[0121] If the sewing of the conductive thread 330 reaches the fourth point 320D, Fig.19 As shown, the sewing of the conductive thread 330 is finished. Then, a thread cutting step is performed to cut the conductive thread 330. At this time, the conductive thread 330 is cut by the automatic thread cutting function of the sewing machine. Thus, a thread end 330D having the same length as the thread end 330B is formed at the fourth point 320B.

[0122] Next, the sheet 320 is cut using all the boundaries 322 as cutting lines. Thus, the processed area 321 is cut off from the other parts of the sheet 320. The above cutting cuts off the crossover line 330C of the conductive line 330 crossing the boundary 322 together with the sheet 320. The line 330C is cut with reference to Fig.18The line 330C extends from the sewn portions 311 and 312 toward the outside of the processed area 321 in a manner of . The line 330C is cut at the cutting point 322A on the boundary 322 .

[0123] Thus, the patterns 3111, 3112 of the sewing portion 311 and the pads 3121, 3122, 3123 of the sewing portion 312 are insulated and separated from each other. In addition, the conductive wires 330 constituting the sewing portions 311, 312 are insulated and separated from the conductive wires 330 located outside the processed area 321. That is, the cutting of the conductive wires 330 in the above-mentioned cutting is equivalent to the "cutting step" of the present disclosure. That is, the crossover wire 330C (refer to Fig.18 ) is disposed at a portion crossing the cutting point 322A of the conductive wire 330 in the above-mentioned cutting step.

[0124] The processed region 321 formed with the sewn portions 311 and 312 is cut off by the above-mentioned cutting to form the base material 310A. That is, by cutting with all the boundaries 322 as the cutting lines, the cutting off of the processed region 321 and the above-mentioned cutting step are performed together, thereby completing the smart textile 310.

[0125] According to the above method, the position where the bird's nest 330A is likely to be generated, that is, the sewing start portion of the sewing machine is located at a position separated from each segment area 3111A, 3112A, 3121A, 3122A, 3123A. Therefore, even if the bird's nest 330A is generated in this portion, the possibility of the bird's nest 330A contacting each segment (each pattern 3111, 3112 and each pad 3121, 3122, 3123) is reduced. As a result, when the smart textile 310 is produced by the sewing machine, the necessity of additional work can be reduced. The additional work is, for example, the work of confirming whether there is a bird's nest 330A in the smart textile 310. Or, if there is a bird's nest 330A, it is an operation to remove it.

[0126] In addition, there is a possibility that the bird's nest 330A is generated at the first point 320A which is the sewing start point of the sewing machine. However, in this case, according to the above-mentioned production method, it is possible to avoid the bird's nest 330A from contacting each section (each pattern 3111, 3112 and each pad 3121, 3122, 3123).

[0127] In addition, the sewing start portion of the sewing machine is a position where the bird's nest 330A may be generated. According to the above method, regardless of whether the bird's nest 330A is actually generated at the sewing start portion of the sewing machine, the sewing start portion of the sewing machine is insulated and separated from the above sections (sewing part 311). Thus, the necessity of additional work can be reduced.

[0128] In addition, according to the above method, the bird's nest 330A is not formed in each segment area 3111A, 3112A, 3121A, 3122A, 3123A (each pattern 3111, 3112 of the sewn part 311 and each pad part 3121, 3122, 3123 of the sewn part 312). Therefore, it is possible to avoid the conductive wire 330 from being scattered, deformed or damaged, which is likely to occur with the removal operation of the bird's nest 330A. Therefore, it is possible to suppress the adverse effect on the function of the smart textile 310 as an electronic component or circuit. Therefore, the reliability of the product quality of the produced smart textile 310 can be improved.

[0129] In addition, according to the above method, the position where the thread ends 330B and 330D are generated, that is, the sewing end portion of the sewing machine is located at a position separated from each segment area 3111A, 3112A, 3121A, 3122A, and 3123A. Therefore, the possibility of the thread ends 330B and 330D extending from the sewing end portion contacting each segment (each pattern 3111, 3112 and each pad 3121, 3122, and 3123) is reduced. As a result, in the smart textile 310 produced by the sewing machine, the possibility of short circuit and / or leakage can be reduced.

[0130] In addition, there is a case where thread ends 330B and 330D extend from the fourth points 320B and 320D, which are the sewing end points of the sewing machine. However, according to the above method, the thread ends 330B and 330D are prevented from contacting the segment areas 3111A, 3112A, 3121A, 3122A, and 3123A. As a result, the possibility of short circuits and / or leakage in the smart textile 310 can be further reduced.

[0131] In addition, according to the above method, the sewing end portion is insulated and separated from each section (each pattern 3111, 3112 and each pad 3121, 3122, 3123), thereby further reducing the possibility of short circuit and / or leakage in the smart textile 310.

[0132] In addition, according to the above method, the insulation separation of the sewn parts 311 and 312 and the cutting of the processed area 321 are performed at the same time. As a result, the production efficiency when producing the smart textile 310 can be improved.

[0133] In addition, during sewing with a sewing machine, there is a possibility that a coil 331 is formed around the conductive thread 330. However, according to the above method, the coil 331 can be prevented from being located at a portion that straddles the cutting point 322A of the conductive thread 330. Thus, the possibility that the cutting of the conductive thread 330 in the above-mentioned cutting step becomes difficult due to the coil 331 can be reduced.

[0134] The present disclosure is not limited to the appearance and structure described in the first to third embodiments, and various changes, additions, and deletions can be made within the scope of not changing the gist of one embodiment of the present disclosure. For example, the following various embodiments can be implemented.

[0135] (1) Smart textiles are not limited to being produced by flat-sewing embroidery machines, and can also be produced by any type of sewing machine, such as a sewing machine with embroidery function or a chain stitch embroidery machine. In the case where the sewing machine is a sewing machine that can perform a sewing method classified as "single chain sewing" in chain stitching, it is preferred that the sewing of the portion outside the processed area is performed by a sewing method classified as "single chain sewing". Among them, for the thread sewn by the sewing method classified as "single chain sewing", by cutting its stitch at one point, the thread before the cut can be easily pulled out and removed. Therefore, the sewing of the portion outside the processed area is performed by a sewing method classified as "single chain sewing". In the conductive thread cutting step, the conductive thread is pulled out and removed after being cut at the stitch. As a result, the conductive thread can be easily removed without cutting the boundary of the processed area.

[0136] (2) The sewing machine is capable of automatically performing any one of the above-mentioned skip stitch processing and stitch length change processing. The sewing machine can also automatically perform any one of the above-mentioned processing. In the case where the sewing machine is a sewing machine that cannot automatically perform the skip stitch processing, the producer of the smart textile can also manually perform the skip stitch processing after interrupting the sewing of the conductive thread. In addition, in the case where the sewing machine is a sewing machine that cannot automatically perform the stitch length change processing, the producer of the smart textile can also manually perform the stitch length change processing. Among them, in the example of the method of manually performing the stitch length change processing, the sewing of the conductive thread is temporarily stopped during the stitch length change processing. Then, the setting of the sewing machine's stitch number setting dial is changed and sewing is resumed. In addition, the sewing of the conductive thread is stopped again during the stitch length change processing. Then, the setting of the sewing machine's stitch number setting dial is restored to the previous setting and sewing is resumed.

[0137] (3) The substrate of the smart textile is not limited to being formed by cutting with the entire boundary of the processed area as the cutting line. For example, the processed area is set to include the edge of the sheet as the boundary. Thus, the processed area can be cut off as the substrate by cutting with a part of the boundary of the processed area as the cutting line. Alternatively, the processed area cut off by cutting can be further processed to form the substrate. Specific examples of additional processing include trimming, hole opening processing or installation of other electronic components. In addition, the conductive wire cutting step can be performed without cutting the boundary of the processed area, thereby forming the entire sheet as the substrate.

[0138] (4) Fig.18 In the method shown, the crossover 330C is only set at the portion crossing the boundary 322 of the processed area 321 in the linear sewing of the conductive thread 330. However, the crossover of the conductive thread can also be set to cross between a point outside the processed area and the sewing start point (second point) or sewing end point (third point) of the sewing. According to this method, the cutting point for insulating and separating the conductive thread constituting the sewing portion from the conductive thread located outside the processed area can be set at a position adjacent to the sewing portion or inside the sewing portion. In addition, the conductive thread other than the conductive thread constituting the sewing portion can be prevented from remaining on the substrate of the smart textile.

[0139] (5) The function of the segment formed in the smart textile as an element is not limited to the function of the above-mentioned pattern or the function of the pad. For example, the segment may have a structure of a sewn portion that locks the edge of the through hole provided in the substrate. Thus, the segment can function as an element that bypasses the current passing through the front and back of the substrate, namely, a conductive hole (via hole). In addition, the two segments may also be sewn portions of two systems that are insulated and separated from each other and are arranged close to each other. Thus, the two segments can also function as an element that realizes the storage of charge between the two systems, namely, a capacitor. Among them, the structure that brings the sewn portions of the above-mentioned two systems close to each other may be, for example, a structure that forms these sewn portions at adjacent positions, or a structure that brings the sewn portions of the two systems formed at positions separated from each other close to each other by folding the substrate.

[0140] (6) In the production method disclosed in the present invention, a cutting step of cutting the conductive wire extending from the segment toward the outside of the segment area is not essential. For example, when multiple segments are densely arranged and bird nests or thread ends are generated in the conductive wire, they will contact other segments. In this case, it is preferred to perform the above-mentioned cutting step. However, for example, there is a situation where the conductive wire extending from the segment toward the outside of the segment area is separated from other elements and / or conductors, and even if the conductive wire has a bird nest or thread ends, it can be considered that no short circuit and / or leakage will occur. In this case, the smart textile can also be completed in a state where the conductive wire remains on the substrate. In addition, for example, there is a case where a conductive wire whose conductivity is ensured by plating on the surface of the conductive wire is used as the conductive wire. In this case, in the conductive wire extending from the segment toward the outside of the segment area, the plating of the portion on the segment side is removed. As a result, the conductive wire can be insulated and separated from the segment without cutting the conductive wire.

Claims

1. A method for producing a smart textile, comprising: using a sewing machine to produce a smart textile formed by forming a sewn portion of a conductive line on a substrate composed of an insulating sheet, wherein: have: a first sewing step of setting a segment area formed with a segment on the sheet material, and sewing the conductive thread from a first point outside the segment area toward a second point on the segment area, the segment being the sewing portion functioning as an element, and an embroidery step of forming the segment in the segment area by sewing an embroidery portion of the conductive thread using the second point as a starting point; A series of steps from the first sewing step to the embroidery step are performed without performing a process of completing the sewing of the conductive thread and cutting the conductive thread.

2. The method for producing a smart textile according to claim 1, wherein: The first point is used as a portion where sewing by the sewing machine starts, and the first point is set at a position separated from the segment area by a distance greater than a size of a bird's nest that may be generated at the first point.

3. The method for producing a smart textile according to claim 1 or 2, wherein: The method further includes a cutting step of cutting the conductive wires extending from the segment toward outside the segment area, thereby insulating and separating the conductive wires constituting the segment from the conductive wires outside the segment area.

4. The method for producing a smart textile according to claim 1 or 2, wherein: The method has: a second sewing step of sewing the conductive thread from a third point toward a fourth point outside the segment area, the third point being a point on the segment area serving as a sewing end point of the embroidery portion; and a thread cutting step, completing the sewing of the conductive thread at the fourth point and cutting the conductive thread; A series of steps from the first sewing step to the second sewing step via the embroidery step is performed without performing a process of completing the sewing of the conductive thread and cutting the conductive thread.

5. The method for producing a smart textile according to claim 4, wherein: The fourth point is set at a position separated from the segment region by a distance longer than the length of the end of the conductive line extending from the fourth point by the line cutting step.

6. The method for producing a smart textile according to claim 3, wherein: A processed region and a boundary of the processed region are set on the sheet, wherein the processed region is a region including the segment region and processed into the substrate. The first point is set outside the processed area. In the first sewing step, the conductive thread is sewn from the first point across the boundary toward the second point, The cutting of the processed area and the severing step are performed together by cutting with at least a portion of the boundary serving as a cutting line.

7. The method for producing a smart textile according to claim 3, wherein: The method has: a second sewing step of sewing the conductive thread from a third point toward a fourth point outside the segment area, the third point being a point on the segment area serving as a sewing end point of the embroidery portion, and a thread cutting step, completing the sewing of the conductive thread at the fourth point and cutting the conductive thread; A series of steps from the first sewing step to the second sewing step via the embroidery step is performed without completing the sewing of the conductive thread and cutting the conductive thread, and, A processed region and a boundary of the processed region are set on the sheet, wherein the processed region is a region including the segment region and processed into the substrate. The fourth point is set outside the processed area. In the second sewing step, the conductive thread is sewn from the third point across the boundary toward the fourth point. The cutting of the processed area and the severing step are performed together by cutting with at least a portion of the boundary serving as a cutting line.

8. The method for producing a smart textile according to claim 3, wherein: When the conductive thread is sewn, a crossover thread without a loop is provided at a portion crossing a cutting point of the conductive thread in the cutting step, the loop being a portion generated by winding of the conductive thread.

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