WO2011111154A1 - Fastener chain, method for sewing rows of elements, and method for manufacturing fastener stringers - Google Patents

Abstract

A fastener chain is configured in such a manner that tape folded sections (22) of fastener tapes (20, 20') are folded inward with first tape surfaces inside, and that engagement head sections (32) of rows (30) of elements are disposed so as to protrude to the outside of the tapes from the tape folded sections (22). Element mounting sections (23, 23') of the fastener tapes (20, 20') have first tape regions (24) which are in contact with lower leg sections (34) of the rows (30) of elements, and also have second tape regions (25) which enclose connection sections (35) and upper leg sections (33) of the rows (30) of elements and which expose the first tape surfaces to the outside. The upper and lower leg sections (33, 34) of the rows (30) of elements are sewn by sewing threads (38) to the first tape regions (24) and the second tape regions (25) of the element mounting sections (23, 23'). When left and right rows (30) of elements have been engaged with each other, mutually facing tape side edges (20a, 20a') of the left and right element mounting sections (23, 23') are in contact with each other. As a result, in the fastener chain, the entire rows (30) of elements are stably hidden by the element mounting sections (23, 23') without the use of cover bodies so that the rows (30) of elements cannot be seen from the outside. Thus, the configuration can improve the appearance of the fastener chain and can cause the element mounting sections (23, 23') to appear as three dimensional objects such as beaded edges.

Description

Fastener chain, element row sewing method and fastener stringer manufacturing method

The present invention relates to a fastener chain in which a continuous element row is concealed by a fastener tape so that it is difficult to see from the outside, and a method for sewing an element row for sewing an element row to a fastener tape to obtain such a fastener chain. Further, the present invention relates to a fastener stringer manufacturing method in which a fastener stringer is manufactured by bending a fastener tape having element rows sewn by the sewing method.

In general, the slide fastener can be concealed so that the engaged left and right element rows are exposed on the tape surface side of the fastener tape and the normal type slide fastener is exposed from the outside. It is roughly divided into two typical types, a hidden type slide fastener (so-called hidden slide fastener).

Of these, hidden slide fasteners are used favorably for products such as various clothing and shoes, taking advantage of the fact that the design of the product is not hindered due to its concealment, and in recent years, seats for seats of automobiles and trains. It has also been used for covers. An example of such a hidden slide fastener is disclosed, for example, in JP-A-2006-247279 (Patent Document 1) as one example.

On the other hand, Utility Model Registration No. 3152100 (Patent Document 2) discloses a slide fastener in which a cover is attached to the surfaces of left and right element rows so that a part of the element rows is hidden from view from the outside. ing.

As shown in FIG. 10, the slide fastener 70 described in Patent Document 2 includes a pair of fastener stringers 71 in which a coiled continuous element row 73 is attached to a pair of left and right fastener tapes 72, and left and right fastener strings 71. It has a covering 74 attached to the upper surface side of the continuous element row 73 and a slider (not shown) slidably arranged along the left and right continuous element rows 73.

The left and right fastener tapes 72 each have a tape main part 72a, a tape bent part 72b bent in a U-shape, and an element attaching part 72c to which the continuous element row 73 is sewn. The continuous element row 73 is sewn to the element attachment portion 72 c of the fastener tape 72 using a fixing thread 75. Each fastener element in the continuous element row 73 has a meshing head, upper and lower leg portions extending from the meshing head, and a connecting portion that connects between adjacent fastener elements. The covering body 74 is disposed on the upper surface side of the upper leg portion of the continuous element row 73 and is sewn to the element mounting portion 72 c together with the continuous element row 73 by a fixing thread 75.

When the slide fastener 70 is attached to an adherend such as a seat cover, an adherend 76 such as a skin material folded in a U-shape is sandwiched inside the tape bent portion 72b of the fastener tape 72. Thus, the fastener tape 72 and the adherend 76 are sewn.

In such a slide fastener 70 of Patent Document 2, when the left and right continuous element rows 73 are engaged with each other, the tape bent portions 72b of the left and right fastener tapes 72 are in close contact with each other, and the left and right tape folds are in close contact with each other. The continuous element row 73 is arranged on the outer side (front side) than the curved portion 72b.

In this case, the covering element 74 is attached to the upper leg portion of the continuous element row 73 in the continuous element row 73 disposed outside the tape bent portion 72b. Thereby, since the upper leg part side of the continuous element 73 is concealed by the covering body 74, the continuous element 73 can be made difficult or invisible when the slide fastener 70 is viewed from above. Further, in the slide fastener 70, since the covering 74 is arranged at a position higher than the surface of the adherend 76, it is possible to give a three-dimensional decoration to the fastener-attached product.

Further, in Patent Document 2, as another embodiment, a covering body is fixed to the surface of the upper leg portion and the connecting portion of the left and right continuous elements with an adhesive so that the upper leg portion and the connecting portion of the continuous element are covered. A slide fastener covered with a body is disclosed. With such a slide fastener, when the left and right continuous elements are meshed with each other, the continuous elements are covered by a covering in a wider range, so that the continuous elements can be made more difficult to see from the outside.

JP 2006-247279 A Utility Model Registration No. 3152100

In the conventional hidden slide fastener described in Patent Document 1, when the left and right continuous element rows are meshed, the tape bent portions of the left and right fastener tapes are in close contact with each other, and the left and right close The continuous element row is arranged on the inner side (back side) of the tape bent portion. For this reason, the left and right continuous element rows in the meshing state are concealed from being visible from the outside by the left and right tape bent portions that are in close contact with each other.

However, when such a conventional hidden slide fastener is used for an adherend product such as a seat cover for an automobile, for example, the left and right fastener tapes are pulled by the seat cover and receive a lateral pulling force in a direction away from each other. Sometimes, a gap is formed between the left and right tape bent portions. For this reason, the left and right continuous element rows may be exposed to the outside through the same gap, and in the conventional hidden slide fastener, the concealed state of the continuous element rows is maintained even if the left and right fastener tapes receive a lateral pulling force. It was extremely difficult.

On the other hand, in the case of the slide fastener 70 according to Patent Document 2 shown in FIG. 10, the upper leg portion of the continuous element row 73 is hidden by the covering body 74, but the connecting portion 74 covers the connecting portion of the continuous element row 73. It has not been. For this reason, in the slide fastener 70, the continuous element row 73 is partially exposed so that it can be easily seen from the left-right direction (fastener width direction), and the appearance and design of the adherend product to which the slide fastener 70 is attached are displayed. There was a problem of lowering.

In the slide fastener 70, only the central portion of the covering body 74 is sewn to the continuous element row 73 and the element mounting portion 72c with the fixing thread 75, so that the outer side edges of the left and right covering bodies 74 are continuous. There was also a problem that the side edge portion of the covering 74 was not easily turned over and was not fixed to the element row 73.

In the slide fastener described as another embodiment in Patent Document 2, a covering body is bonded to the upper leg portion and the connecting portion of the continuous element, and the upper leg portion and the connecting portion are covered with the covering body. . However, when manufacturing such a slide fastener, since the continuous element has to be bonded to the continuous element with an adhesive after the continuous element is sewn to the fastener tape, the manufacturing process of the slide fastener becomes complicated.

Further, in the case of the slide fastener, since the covering body is bonded to the upper leg portion and the connecting portion of the continuous element, the position of the covering body with respect to the continuous element is fixed. For this reason, if the position of the covering is shifted in the left-right direction when the covering is bonded and fixed to the continuous element, the position of the covering cannot be adjusted, and the continuous element cannot be completely hidden by the covering.

Further, in the slide fastener, since the fastener tape and the covering are formed separately, when the covering is bonded to the upper leg portion and the connecting portion of the continuous element, the gap between the fastener tape and the covering is determined. The boundary and the tape side edge of the fastener tape are visible from the outside, and the appearance of the slide fastener may be impaired.

Moreover, when adhering the covering to the continuous element array using an adhesive, it is difficult to adjust the amount of adhesive applied between the two. For example, if the amount of adhesive applied is large, the adhesive Spilled out of the cover, and the appearance of the slide fastener could be impaired.

On the other hand, when the application amount of the adhesive is small, the edge of the covering cannot be stably adhered to the upper leg portion or the connecting portion of the continuous element. For this reason, for example, the covering is easily peeled off from the connecting portion curved with a large curvature, and a part of the continuous element may be exposed to the outside.

In addition, the slide fastener according to Patent Document 2 (that is, the slide fastener shown in FIG. 10 and the slide fastener according to another embodiment) is covered as a component constituting the fastener, in addition to the fastener tape and the continuous element row. It has a separate body and increases the number of parts compared to the conventional hidden slide fastener. This increases manufacturing costs, complicates parts management, increases the number of manufacturing processes, and the like, and it has also been desired to reduce the number of fastener components.

The present invention has been made in view of the above-described conventional problems. A specific object of the present invention is to stably hide a continuous element row from the outside without causing an increase in the number of components. A fastener chain for a slide fastener that has improved appearance, an element row sewing method for sewing an element row to a fastener tape to obtain the fastener chain, and a fastener tape on which the element row is sewn by the sewing method It is providing the manufacturing method of the fastener stringer which bends and manufactures a fastener stringer.

In order to achieve the above object, a slide fastener fastener chain provided by the present invention includes, as a basic configuration, a pair of left and right fastener tapes, and a continuous element row sewn to the left and right fastener tapes. The fastener tape comprises: a tape main part; an element attaching part to which the element row is sewn; and a tape bend that is disposed between the tape main part and the element attaching part and is bent in a U-shape. The fastener element of the element row includes a meshing head, an upper and a lower leg extending from the meshing head, and a connecting portion that connects between the adjacent fastener elements. It is a fastener chain, Comprising: The said tape bending part folds the 1st tape surface of the said fastener tape inside. The element row is bent and arranged on the second tape surface side opposite to the first tape surface of the fastener tape in the element attachment portion, and the element attachment portion is in contact with the lower leg portion of the element row. A first tape region; and a second tape region that encloses the connecting portion and the upper leg portion of the element row and exposes the first tape surface to the outside when the fastener chain is used. The upper and lower leg portions of the row are sewn to the first tape region and the second tape region of the element mounting portion by sewing threads, and when the left and right element rows are meshed, The main feature is that the tape side edges are in contact with each other.

In the fastener chain according to the present invention, the fastener tape is woven, and the warp yarn arranged in the second tape region of the element attachment portion is more than the warp yarn arranged in the first tape region of the element attachment portion. It is preferred that fine threads are used.

In this case, it is preferable that the thickness of the warp arranged in the second tape area is set to 30 dtex or more and 150 dtex or less. Moreover, it is preferable that the thickness of the warp arranged in the said 1st tape area | region of the said element attachment part, the said tape bending part, and the said tape main part is set to 160 dtex or more and 500 dtex or less.

The second tape region preferably includes a plurality of warps woven into a 1/1 structure that alternately travels on the front side of at least one weft and the back side of one weft.
In this case, it is preferable that the second tape region has warp woven into a 2/2 structure that alternately travels on the front side of the two wefts and the back side of the two wefts. Further, the second tape region has a first woven tissue region disposed on the first tape region side and a second woven tissue region disposed on the tape side edge side, and the first woven tissue region It is particularly preferable that the region has more warps woven into the 2/2 structure than the second woven structure region.

Furthermore, in the fastener chain of the present invention, the tape side end edge of the element mounting portion is more than the position of the inner peripheral surface in the meshing head of the fastener element when the left and right element rows are separated. It is preferable that the protrusion protrudes toward the meshing partner side.

Next, the element row sewing method provided by the present invention includes, as a basic configuration, a coupling head that connects between a meshing head, upper and lower leg portions extending from the meshing head, and adjacent fastener elements. A sewing method of an element row in which a continuous element row having a portion is sewn to a fastener tape by a sewing machine, and a guide having an insertion passage through which the fastener tape and the element row can be inserted into a sewing portion of the sewing machine A portion is arranged, and the element attachment portion of the fastener tape is bent and guided in a U shape so that the first tape surface faces outside, and is bent in a U shape toward the insertion path of the guide portion. In the element attachment portion that is guided into the insertion path, the upper and lower leg portions and the connecting portion are arranged on the element tape. The element that is guided in a posture that contacts or faces the second tape surface opposite to the one tape surface, and the lower leg portion is in contact with the element mounting portion and the element row inserted through the insertion path And sewing the upper and lower leg portions of the element row at the same time to the first tape region of the attachment portion and the second tape region of the element attachment portion with which the upper leg portion is in contact. To do.

Further, the element row sewing method provided by the present invention includes a part of the fastener tape to which the element row is sewn by the element row sewing method having the above-described configuration, and the first tape surface on the inner side. Forming a tape bent portion by bending in a U-shape so as to face, and heating the fastener tape to hold the folded form of the fastener tape. Is.

In the fastener chain for slide fastener according to the present invention, the tape bent portion of the fastener tape is bent with the first tape surface inside (in other words, the second tape surface outside), and the continuous element The row is arranged on the second tape surface side of the element mounting portion.

The element attachment portion of the fastener tape in the fastener chain encloses the first tape region in contact with the lower leg portion of the element row, the connecting portion and the upper leg portion of the element row, and the first tape surface when the fastener chain is used. The upper and lower leg portions of the element row are sewn to the first tape region and the second tape region of the element mounting portion by sewing threads. Furthermore, the opposing tape side edges of the left and right element mounting portions are in contact with each other when the left and right element rows are engaged.

In the fastener chain of the present invention having such a configuration, the continuous element row is sewn to the element mounting portion in a state of being wrapped by the element mounting portion of the fastener tape, and the left and right element mounting portions The opposing tape side edges are brought into contact with each other when the left and right element rows are engaged. As a result, the left and right element rows are stably hidden by the element attaching portion of the fastener tape without using a cover as in Patent Document 2, for example.

Also, the element mounting part that encloses the connecting part and the upper leg part of the element row is continuously extended from the tape bent part. For this reason, for example, as in the above-mentioned Patent Document 2, there is no problem that the covering body is turned up at the portion of the connecting portion that is curved with a large curvature of the element row. Note that the opposing tape side edges of the left and right element mounting portions are abutted against each other and are thus formed so that the tape side edges are not easily turned over.

Therefore, the fastener chain of the present invention can conceal the entire engaged element row so as not to be visible from the outside without increasing the number of fastener components compared to, for example, a conventional hidden slide fastener. It is possible to improve the appearance of the fastener chain and further improve the appearance of the attached product to which the fastener chain is attached.

In particular, the fastener chain of the present invention has an element row and an element mounting portion that covers the element row disposed on the outer side (front side) of the tape tape bent portion. It is possible to give a three-dimensional feeling to a new appearance different from the conventional hidden slide fastener.

In addition, in the same fastener chain, when the left and right fastener tapes are subjected to a lateral pulling force in a direction in which the left and right fastener tapes are separated from each other in the meshed state of the element rows, the left and right tape bent portions move in a direction to separate from each other. In addition, since the element attaching portions of the left and right fastener tapes are firmly sewn to the meshed element rows, the positions can be maintained. For this reason, it is possible to maintain the state where the opposing tape side edges of the element mounting portions are in contact with each other, and the element rows can be stably hidden by the left and right element mounting portions.

In addition, the state where the tape side edges facing each other of the element mounting portion are in contact with each other is preferably a state where the left and right tape side edges are completely in contact with each other over the entire tape length direction, In the present invention, for example, a slight gap is formed between the left and right tape side edges depending on the state in which at least a part of the left and right tape side edges are in contact with each other or the usage form of the fastener chain. When the fastener chain is viewed from the outside, a state where the element row is not visible or difficult to see from between the left and right tape side edges is also included.

In such a fastener chain according to the present invention, the fastener tape is woven, and the warp yarn arranged in the second tape region of the element attachment portion is arranged in the first tape region of the element attachment portion. The thread is thinner than the warp. Thereby, the tape thickness in the 2nd tape area | region of an element attachment part can be made thinner than a 1st tape area | region. For this reason, when the slider is attached to the fastener chain, the element attachment portion is in sliding contact with the inner wall surface of the slider, but the friction force generated between the element attachment portion and the inner wall surface of the slider is reduced to easily slide the slider. It can be moved.

Furthermore, since the warp of the second tape region in the element mounting portion is formed thin, the second tape region can be formed easily, so that the outer circumferential surface of the connecting portion of the element row and the upper leg portion are aligned. Thus, the second tape region can be easily bent.

In this case, the thickness of the warp yarn arranged in the second tape area is set to 30 dtex or more and 150 dtex or less, particularly 50 dtex or more and 100 dtex or less, thereby effectively reducing the tape thickness in the second tape area. In addition, the second tape region can be curved and can be surely aligned with the connecting portion and the upper leg portion of the element row.

Further, the thickness of the warp arranged in the first tape region, the tape bent portion, and the tape main portion of the element mounting portion is set to 160 dtex or more and 500 dtex or less. Since the thickness of the warp in the first tape area of the element mounting portion is set in the above range, the rigidity in the tape length direction of the first tape area can be increased. It can be sewn stably.

Further, since the thickness of the warp at the tape bent portion and the tape main portion is set within the above range, the rigidity of the tape bent portion and the tape main portion in the tape length direction can be increased. For example, when a fastener tape of a fastener chain is sewn to an automobile seat cover or the like to be a product to be attached, the seat cover is made relatively thick. For this reason, when the tape main part of the fastener tape is formed flexibly, when the fastener tape is sewn to the seat cover, the fastener tape loses the tension of the sewing thread, and a wave-like shrinkage occurs in the fastener tape. There is a risk of problems such as sewing shrinkage. On the other hand, by increasing the rigidity in the tape length direction of the tape bent part and the tape main part as described above, problems such as sewing shrinkage occur even when the fastener tape is sewn to a thick product. Can be prevented.

In addition, the second tape region of the element mounting portion has a plurality of warps woven into a 1/1 structure that alternately travels on the front side of at least one weft and the back side of one weft. Thereby, the yarn density in the second tape region can be increased, and the strength and durability of the second tape region that is in sliding contact with the inner wall surface of the slider can be improved.

Furthermore, in this case, the second tape region of the element attachment portion has warps woven into a 2/2 structure that alternately travels on the front side of the two wefts and the back side of the two wefts, Appropriate flexibility can be given to the second tape region, so that the second tape region can be formed easily. Further, since the second tape region has warp yarns having a 2/2 structure, the sewing needle can be easily inserted into the second tape region of the element mounting portion when the element row is sewn to the element mounting portion.

Particularly in this case, the second tape region of the element mounting portion has a first woven tissue region disposed on the first tape region side and a second woven tissue region disposed on the tape side edge side, The woven structure region has more warps woven into the 2/2 structure than the second woven structure region. Thereby, since the 1st woven structure area | region distribute | arranged to the 1st tape area | region side in a 2nd tape area | region can be formed more flexibly than a 2nd woven structure area | region, the 1st woven structure area | region has a big element row | line | column. The connecting portion can be covered in a stable manner along the outer peripheral surface of the connecting portion that is curved with a curvature.

Furthermore, in the fastener chain according to the present invention, the tape side end edge of the element mounting portion is on the mating counterpart side with respect to the position of the inner peripheral surface of the meshing head of the fastener element when the left and right element rows are separated. It is arranged to protrude toward the. Thereby, when the left and right element rows are meshed, the opposing tape side edges of the left and right element mounting portions can be reliably abutted and brought into contact with each other. Therefore, it can prevent more reliably that the element row | line | column in a meshing state is exposed outside from between the left and right element mounting portions.

In the sewing method of sewing the element row provided by the present invention on the fastener tape by the sewing machine, a guide portion having an insertion path through which the fastener tape and the element row can be inserted is arranged in the sewing portion of the sewing machine. The element attachment portion of the fastener tape is bent and guided in a U shape so that the first tape surface faces the outside toward the insertion path of the portion.

Next, inside the element mounting portion that is bent into a U shape and guided into the insertion passage, the element row is guided in such a posture that the upper and lower leg portions and the connecting portion are in contact with or face the second tape surface of the fastener tape. Thereafter, the upper and lower leg portions of the element row are simultaneously sewn into the first tape region and the second tape region of the element attachment portion while the element attachment portion and the element row are inserted into the insertion passage.

The first tape region of the element mounting portion is thus obtained by sewing the element row to the element mounting portion of the fastener tape with the sewing machine so that the connecting portion and the upper leg portion of the element row are encapsulated by the element mounting portion. And the upper and lower legs of the element row can be sewn to the second tape region.

Furthermore, in the fastener stringer manufacturing method provided by the present invention, a part of the fastener tape to which the element row is sewn by the element row sewing method is placed in a U-shape so that the first tape surface faces inward. The tape tape is bent to form a tape bent portion, and then the fastener tape is heated to heat set the fastener tape, and the folded shape of the fastener tape is maintained. Thereby, the fastener stringer used for the fastener chain which concerns on the above-mentioned this invention can be manufactured stably.

FIG. 1 is a front view showing a slide fastener having a fastener chain according to Embodiment 1 of the present invention. FIG. 2 is a sectional view of the fastener chain. FIG. 3 is a woven structure diagram showing a woven structure of the fastener tape in the fastener chain. FIG. 4 is an explanatory view for explaining a method of sewing the element row in the fastener chain to the fastener tape. FIG. 5 is an explanatory view for explaining a method of forming a tape bent portion by bending a part of the fastener tape in the fastener chain. FIG. 6 is a perspective view showing an automobile seat cover that is one of the usage forms of the slide fastener including the fastener chain. FIG. 7 is a cross-sectional view illustrating a state in which the left and right element rows are separated in the fastener chain according to the second embodiment of the present invention. FIG. 8 is an explanatory view schematically illustrating how the element row moves inward with respect to the element attachment portion of the fastener tape in the fastener stringer of the fastener chain. FIG. 9 is a cross-sectional view showing a state in which the left and right elements of the fastener chain are engaged with each other. FIG. 10 is a cross-sectional perspective view showing a conventional slide fastener to which a covering is attached.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings by way of examples. The present invention is not limited to the embodiments described below, and various modifications are possible as long as they have substantially the same configuration as the present invention and have the same effects. Is possible.

For example, in the following embodiment, a case where a coil-like fastener element is sewn to a fastener tape as a continuous element row is described. However, the present invention is not limited to this, and it is also possible to sew a zigzag fastener element on the fastener tape instead of the coiled fastener element to form an element row.

FIG. 1 is a front view showing a slide fastener having a fastener chain according to the first embodiment, and FIG. 2 is a cross-sectional view of the fastener chain.
In the following description, the tape length direction of the fastener tape in the fastener chain is defined as the front-rear direction. In the fastener chain, the tape width direction (chain width direction of the fastener chain) in the tape main portion of the fastener tape is defined as the left-right direction. Furthermore, in the fastener chain, the direction perpendicular to the first and second tape surfaces in the tape main portion of the fastener tape is defined as the vertical direction.

In the fastener chain 1 according to the first embodiment, as shown in FIG. 1, the slide fastener 3 is configured by attaching the slider 4 along the continuous element row 30 in the fastener chain 1. The slide fastener 3 configured as described above is used by being attached to a seat cover 7 (see FIG. 6) of the automobile seat 6 as described later.

The fastener chain 1 of the first embodiment that constitutes such a slide fastener 3 has a pair of left and right fastener stringers 10 as shown in FIG. Each of the left and right fastener stringers 10 includes a woven belt-like fastener tape 20 and a continuous element row 30 sewn on the fastener tape 20.

The left and right fastener tapes 20 have a first tape surface and a second tape surface, and are woven by wefting the ground weft by reciprocating the carrier bar into the warp opening. Each fastener tape 20 includes, for example, a tape main body 21 to be sewn on an adherend product such as the seat cover 7, and a tape bent extending from one side edge of the tape main body 21 and bent into a U shape. And an element mounting portion 23 that is further extended from the tape bent portion 22 and to which the element row 30 is sewn.

In this case, the surface (inner peripheral surface) facing the inner side of the tape bent portion 22 is the first tape surface, the surface facing the outer side of the tape bent portion 22 and the element row 30 of the element mounting portion 23 are The surface on the side where it is arranged is the second tape surface. In addition, although the present Example 1 demonstrates the case where the fastener tape 20 is a textile fabric, in this invention, it is also possible to comprise a fastener tape with a knitted fabric.

In the left and right fastener tapes 20 according to the first embodiment, when the left and right element rows 30 are engaged, the tape bent portions 22 are in contact with each other, and the tape side edges 20a on the element mounting portion 23 side are in contact with each other. It is formed to contact. In the present invention, when the left and right element rows 30 are engaged with each other, it is sufficient that the tape side edges 20a on the element mounting portion 23 side of the left and right fastener tapes 20 are at least in contact with each other. The curved portions 22 may not contact each other.

Further, the tape main body portion 21 and the tape bending portion 22 in the fastener tape 20 of the first embodiment are woven by the weft and the warp yarn that are configured as one in a state where two single yarns are aligned. As shown in FIG. 3, the weaving structure is a diagonal pattern weaved in a 2/2 structure in which warps run alternately on the front side of the two ground wefts and on the back side of the two wefts It is mainly composed of. As described above, the tape main body 21 and the tape bent portion 22 are mainly composed of a diagonal pattern, so that the tape main portion 21 and the tape bent portion 22 can be formed to be moderately soft.

The tape side edge portion 20b opposite to the tape bent portion 22 side in the tape main body portion 21 has warps alternately traveling on the front side of one ground weft and on the back side of one ground weft. / Closed by being composed of plain weave woven into 1 structure. Here, the portion of the tape main portion 21 excluding the tape side edge portion 20b, the tape bent portion 22, and the weave structure of the first tape region 24 to be described later of the element mounting portion 23 are composed of the same oblique weave. In FIG. 3, a part of the tape main body portion 21, the tape bent portion 22, and a portion of the first tape region 24 of the element attachment portion 23 are not illustrated.

In this case, polyester fibers of 160 dtex or more and 500 dtex or less, preferably 300 dtex or more and 400 dtex or less are used for each single yarn arranged as the weft yarn and the warp yarns arranged in the tape main body portion 21 and the tape bending portion 22. Is used. In Example 1, a 330 dtex polyester fiber is actually used for each single yarn and warp arranged as the ground weft in the tape main portion 21 and the tape bent portion 22.

In the first embodiment, the tape main portion 21 and the tape bent portion 22 are configured using the warp having the thickness as described above, so that the tape lengths of the tape main portion 21 and the tape bent portion 22 are as follows. The rigidity in the direction can be increased.

Here, for example, when the fastener chain is used for the seat cover 7 of the automobile seat 6, the seat cover 7 may be formed relatively thick. In this case, when the fastener tape of the fastener chain is sewn to the seat cover 7 with the fixing thread, if the rigidity of the fastener tape in the tape length direction is insufficient, the fastener tape loses the tension of the fixing thread and the fastener. Wavy shrinkage may occur on the tape.

In contrast, the fastener chain 1 of the first embodiment has a relatively thick seat cover 7 because the rigidity in the tape length direction of the tape main body portion 21 and the tape bent portion 22 is increased as described above. Even if the tape main portion 21 of the fastener tape 20 is sewn with the fixing thread, the wavy shrinkage does not occur in the fastener tape 20, and problems such as sewing shrinkage can be prevented.

In the present invention, the material and the thickness of the weft and the warp arranged in the tape main part 21, the tape bent part 22, and the element attaching part 23 described later are not particularly limited. For example, synthetic fibers other than polyester fibers and natural fibers can be arbitrarily selected and used for the above-described ground weft and warp, and the thickness of the yarn can be arbitrarily changed as necessary. .

On the other hand, the element attachment portion 23 in the fastener tape 20 of the first embodiment has a first tape region 24 disposed on the tape bent portion 22 side and a second tape disposed on the tape side edge 20a side of the fastener tape 20. And a tape area 25.

The first tape region 24 of the element mounting portion 23 extends continuously from the tape bent portion 22 of the fastener tape 20 and is arranged so as to be in contact with an outer peripheral surface of a lower leg portion 34 described later of the element row 30. The second tape region 25 of the element mounting portion 23 is formed from the first tape region 24 of the element mounting portion 23 to the tape side edge 20a. The second tape region 25 covers the outer peripheral surfaces of the connecting portion 35 and the upper leg portion 33 so as to wrap around the connecting portion 35 and the upper leg portion 33 of the element row 30, and the left and right element rows 30 are When meshed, the first tape surface of the second tape region 25 is arranged so as to be exposed to the outside.

In the first embodiment, the first tape region 24 of the element mounting portion 23 is composed of the same woven structure as the tape main portion 21 excluding the tape bent portion 22 and the tape side edge portion 20b. That is, the first tape region 24 is woven by ground wefts and warps that are formed as a single piece in which two single yarns are aligned, and the woven structure has two warps. It consists of a diagonal weave woven into a 2/2 structure that runs alternately on the front side of the ground weft and on the back side of the two wefts.

In this case, similar to the tape main portion 21 and the tape bent portion 22, a polyester fiber of 160 dtex or more and 500 dtex or less, preferably a polyester fiber of 300 dtex or more and 400 dtex or less is used for the warp arranged in the first tape region 24. It is done. In Example 1, 330 dtex polyester fiber is actually used as the warp of the first tape region 24.

In contrast, the second tape region 25 of the element mounting portion 23 is configured by weaving a warp that is thinner than the first tape region 24. In the first embodiment, the second tape region 25 is disposed along the first woven tissue region 25 a disposed along the connection portion 35 of the element row 30 and the upper leg portion 33 of the element row 30. And a second woven tissue region 25b.

The first and second woven fabric regions 25a and 25b in the second tape region 25 are woven into a 1/1 structure that runs alternately on the front side of one ground weft and the back side of one weft. In addition, a plurality of warps (hereinafter abbreviated as 1/1 warp), 2/2 weaves that run alternately on the front side of the two wefts, and the back side of the two wefts A plurality of warps (hereinafter abbreviated as 2/2 texture warps) are arranged.

In this way, the warp of 1/1 structure is arranged in the first and second woven structure areas 25a, 25b of the second tape area 25, so that the strength and resistance of the first and second woven structure areas 25a, 25b are increased. Abrasion can be increased. In addition, since the warp yarns of 2/2 texture are arranged in the first and second woven texture regions 25a and 25b, the first and second woven texture regions 25a and 25b are secured with appropriate flexibility and the same. It is possible to prevent fuzz from occurring in the region.

Furthermore, when the element row 30 is sewn to the element attachment portion 23, if the warp yarn of 2/2 texture is arranged in the second woven fabric region 25b, the yarn density of the second woven tissue region 25b becomes too high. Therefore, the sewing needle 41 can be smoothly pierced into the second woven tissue region 25b.

In particular, in the fastener chain 1 of the first embodiment, the ratio of the number of warp yarns of the 2/2 structure disposed in the first woven structure area 25a of the second tape area 25 is set larger than that of the second woven structure area 25b. ing. Specifically, in the first woven structure region 25a of the first embodiment, a warp having a 1/1 structure and a warp having a 2/2 structure are arranged in the same number. On the other hand, in the second woven structure region 25b of the first embodiment, the number of warp yarns of 2/2 texture is less than the number of warp yarns of 1/1 texture.

Thus, by making the ratio of the number of warp yarns of the 2/2 structure arranged in the first woven structure region 25a larger than that of the second woven structure region 25b, the flexibility of the first woven structure region 25a is increased to the second woven structure. It can be higher than the tissue region 25b. For this reason, the first woven tissue region 25a can be easily covered with the first woven tissue region 25a while the first woven tissue region 25a is bent along the connecting portion 35 that is curved with a large curvature of the element row 30. .

On the other hand, by setting the ratio of the number of warp yarns of 1/1 texture arranged in the second woven texture region 25b to be larger than that of the first woven texture region 25a, the yarn density of the second woven texture region 25b can be increased. It becomes larger than the region 25a, and the strength of the second woven tissue region 25b can be increased. For this reason, the state in which the element row 30 is sewn to the first tape region 24 of the element attachment portion 23 and the second woven tissue region 25b of the second tape region 25 can be stably maintained.

In this case, a polyester fiber of 30 dtex or more and 150 dtex or less, preferably a polyester fiber of 50 dtex or more and 100 dtex or less is used for the warp yarns arranged in the first and second woven structure regions 25a and 25b of the second tape region 25. In Example 1, 84 dtex polyester fiber is actually used as the warp of the first woven structure region 25a, and 50 dtex polyester fiber is used as the warp of the second woven structure region 25b.

Thus, by making the warp arranged in the second tape region 25 thinner than the warp arranged in the first tape region 24, the tape thickness in the second tape region 25 is made larger than that in the first tape region 24. The second tape region 25 can be easily formed while being thin. For this reason, the 2nd tape area | region 25 of the element attachment part 23 can be easily curved along the outer peripheral surface of the connection part 35 of the element row | line | column 30, and the upper leg part 33. FIG.

The element row 30 in the fastener chain 1 of the first embodiment is formed continuously by molding a monofilament made of synthetic resin such as polyester into a coil shape. Each fastener element 31 constituting the element row 30 includes a meshing head 32, upper and lower leg portions 33 and 34 extending from the meshing head 32 in the chain width direction, and an upper leg portion 33 or a lower leg portion 34. The end portion includes a connecting portion 35 that connects the lower leg portion 34 or the upper leg portion 33 of the fastener element 31 adjacent in the front-rear direction.

In the element row 30, the core string 37 is inserted between the upper and lower leg portions 33 and 34, the lower leg portion 34 is in contact with the first tape region 24 of the element mounting portion 23, and the connecting portion 35 and the upper leg The portion 33 is sewn to the element attachment portion 23 with the second tape region 25 of the element attachment portion 23 being covered. In particular, in this case, the upper and lower leg portions 33 and 34 of the element row 30 are composed of upper yarns and lower yarns in the first tape region 24 in the element attachment portion 23 and the second woven tissue region 25b in the second tape region 25. The sewing thread 38 is sewn by double chain stitching.

Next, a method for manufacturing the fastener chain 1 of the first embodiment having the above-described configuration will be described.
The fastener chain 1 of the first embodiment is manufactured by separately manufacturing the left and right fastener stringers 10 and then meshing the element rows 30 of the left and right fastener stringers 10.

First, in order to produce the fastener stringer 10, the continuous element row | line | column 30 is sewn on the fastener tape 20 using a sewing machine.
Here, the sewing portion of the sewing machine used for sewing has a guide portion 40 for sewing the element row 30 to the fastener tape 20 using two rows of sewing needles 41 as shown in FIG. In the sewing portion of the sewing machine, the two rows of sewing needles 41 are arranged so as to be shifted from each other in the conveying direction of the fastener tape 20 and the element row 30. The guide portion 40 has an insertion passage 42 through which the fastener tape 20 and the element row 30 can be inserted, and a needle insertion hole 43 through which two rows of sewing needles 41 can be inserted in the vertical direction. It is arranged.

In this case, the insertion passage 42 of the guide portion 40 includes a first insertion passage 42 a through which the element mounting portion 23 and the element row 30 of the fastener tape 20 bent into a U shape can be inserted, and a tape body of the fastener tape 20. And a second insertion passage 42b through which a portion corresponding to the tape bending portion 22 is inserted.

Further, the needle insertion hole 43 is provided above and below the first insertion passage 42a so that the two rows of sewing needles 41 can penetrate the second insertion passage 42b of the guide portion 40. Are arranged along a direction perpendicular to the conveying direction.

Further, on the upstream side of the guide portion 40 in the transport direction, there is a guide portion (not shown) that guides the element mounting portion 23 of the fastener tape 20 toward the insertion path 42 of the guide portion 40 while bending the element attachment portion 23 into a U shape. It is arranged.

When sewing the element row 30 on the fastener tape 20 using such a sewing machine having the guide portion 40, first, the fastener tape 20 and the element row 30 are guided and introduced into the insertion passage 42 of the guide portion 40. At this time, before the fastener tape 20 is introduced into the insertion passage 42 of the guide portion 40, the element attachment portion 23 of the fastener tape 20 is moved by a guide portion (not shown) arranged on the upstream side of the guide portion 40. The second tape surface is bent inward (with the first tape surface outward) and is bent in a U-shape.

Here, in the fastener tape 20 of the first embodiment, a thread thinner than the first tape area 24 is used for the warp thread arranged in the second tape area 25 of the element mounting portion 23 as described above. In addition, the ratio of the warp yarn of 2/2 texture arranged in the first woven tissue region 25 a of the second tape region 25 is set higher than that of the second woven tissue region 25 b of the second tape region 25.

As a result, the second tape region 25 of the element mounting portion 23, in particular the second woven tissue region 25b of the second tape region 25, is formed in a U-shape so that it can be easily bent. The element mounting portion 23 can be easily bent into a shape along the outer peripheral surfaces of the upper and lower leg portions 33, 34 of the element row 30 and the connecting portion 35 when passing through.

Subsequently, the fastener tape 20 in which the element mounting portion 23 is bent in a U-shape is introduced into the insertion passage 42 of the guide portion 40 while maintaining the bent form. The coil-shaped element row 30 is arranged on the inner side (inner peripheral side) of the element attachment portion 23 that is bent into a U shape of the fastener tape 20 after the core string 37 is inserted between the upper and lower leg portions 33 and 34. It is introduced into the first insertion passage 42 a in the guide portion 40 together with the fastener tape 20 as arranged.

At this time, in the element row 30, the lower leg portion 34 is in contact with (or faces) the second tape surface of the first tape region 24 of the element attachment portion 23, and the upper leg portion 33 and the connecting portion 35 are the element attachment portion 23. Of the element mounting portion 23 in such a posture that it contacts (or faces) the second tape surface of the second tape region 25 and faces the opening side of the element mounting portion 23 bent in a U shape. Guided inside.

Next, the fastener tape 20 and the element row 30 introduced into the insertion path 42 of the guide portion 40 are conveyed downstream along the insertion path 42 while maintaining a predetermined bending form and positional relationship. At the same time, the upper and lower leg portions 33 and 34 of the element row 30 and the core string 37 are fastened with a fastener tape by reciprocating the two rows of sewing needles 41 through the needle insertion holes 43 arranged in the guide portion 40 in the vertical direction. Sew to 20 element mounting portions 23.

At this time, the upper and lower leg portions 33 and 34 of the element row 30 are formed by the double ring stitching of the sewing thread 38 composed of the upper thread and the lower thread, and the first tape region 24 of the element mounting portion 23 with which the lower leg section 34 contacts, It is sewn simultaneously to the second woven tissue region 25b in the second tape region 25 of the element attachment portion 23 with which the upper leg portion 33 is in contact.

In particular, in the first embodiment, the first tape region 24 of the element attachment portion 23 is composed of a diagonal weave as described above, and the second woven tissue region 25b in the second tape region 25 of the element attachment portion 23 is formed. For the warp, not only a warp having a 1/1 structure but also a warp having a 2/2 structure is used at a predetermined ratio.

For this reason, the sewing needle 41 can be smoothly pierced through the first tape region 24 of the element mounting portion 23 and the second woven tissue region 25b of the second tape region 25, and thereby the upper and lower legs of the element row 30. The portions 33 and 34 can be stably sewn to the first tape region 24 and the second woven tissue region 25b of the second tape region 25.
Then, the fastener tape 20 on which the element row 30 is sewn by the sewing needle 41 is collected after being conveyed downstream by a conveying means (not shown) arranged in the sewing machine.

By performing the sewing process as described above, the upper and lower leg portions 33 and 34 and the connecting portion 35 are covered with the element mounting portion 23 of the fastener tape 20, and the meshing head 32 is a U-shaped element mounting portion 23. The fastener stringer 10 can be obtained in which the element row 30 is sewn to the fastener tape 20 in a state of being arranged on the opening side.

After the above-described sewing process is completed, as shown in FIG. 5, a part of the fastener tape 20 to which the element row 30 is sewn is bent to form the tape bent portion 22.
More specifically, in this step, first, the mesh head 32 side of the sewing tape (that is, the sewing line formed by the sewing thread 38) formed at the time of sewing the element row 30 in the fastener tape 20 is firstly described. Bend the tape part.

At this time, the tape portion is bent so that the first tape surface faces inward and the cross section of the tape is U-shaped. Thereby, the tape bending part 22 bent in the U shape at the fastener tape 20 is formed. In this case, when the tape bending portion 22 is formed in the fastener tape 20, at least a part of the meshing head portion 32 of the element row 30 is closer to the chain width direction than the position of the outer peripheral surface of the tape bending portion 22. It is bent so as to protrude toward the outside of the tape.

Subsequently, after the fastener tape 20 is bent as described above to form the tape bent portion 22, the fastener tape 20 is heated to perform heat setting for maintaining the bent form of the fastener tape 20. Thereby, the fastener stringer 10 in which at least a part of the meshing head 32 of the element row 30 is protruded outward from the tape bent portion 22 of the fastener tape 20 is manufactured.

Then, the fastener stringers 10 obtained as described above are combined in pairs, and the meshing heads 32 protruding from the tape bent portion 22 of each element row 30 are meshed. Thereby, the fastener chain 1 which concerns on this Example 1 as shown in FIG. 2 is obtained.

In the fastener chain 1 of the first embodiment thus obtained, the connecting portion 35 and the upper leg portion 33 of the element row 30 are completely encapsulated by the second tape region 25 in the element mounting portion 23 of the fastener tape 20. ing. And the tape side edge 20a which the element attaching part 23 in the right-and-left fastener tape 20 opposes is contacting.

Thereby, in the fastener chain 1 of the first embodiment, the left and right element rows 30 are reliably concealed by the element mounting portion 23 of the fastener tape 20 without using a cover as in Patent Document 2, for example. And the 1st tape surface of the element attachment part 23 can be exposed outside.

In particular, in the fastener chain 1, the element attachment portion 23 of the fastener tape 20 continuously extends the element row 30 from the lower leg portion 34 of the element row 30 through the connecting portion 35 to the meshing head 32 side of the upper leg portion 33. Wrapped up. For this reason, the problem that the element row | line | column 30 exposes partially like the said patent document 2 does not arise.

Therefore, according to the fastener chain 1 of the first embodiment, for example, the number of fastener components is not increased as compared with the conventional hidden slide fastener, and the engaged element row 30 is not visible from the outside. Therefore, it is possible to stably cover and improve the appearance of the fastener chain 1.

Further, in the fastener chain 1, the element row 30 and the element attachment portion 23 covering the element row 30 are arranged on the outer side (front side) with respect to the tape bent portion 22 where the left and right fastener tapes 20 abut each other. Has been. Thereby, since the fastener chain 1 can show the element attachment part 23 in three dimensions like a bead, it has a new appearance different from the conventional hidden slide fastener.

In the fastener chain 1 according to the first embodiment, for example, a hole portion designed in a desired shape such as a circular shape or a rhombus shape can be intentionally formed in the element attachment portion 23 of the fastener tape 20. is there. Thereby, since the element row 30 encapsulated in the element attachment portion 23 can be partially shown through the hole portion of the element attachment portion 23, it becomes possible to increase design variations in the fastener chain 1. .

Furthermore, in the fastener chain 1 according to the first embodiment, for example, when the left and right fastener tapes 20 receive a lateral pulling force in a direction in which the left and right fastener tapes 20 are separated from each other in the meshed state of the element rows 30, the left and right tape bent portions 22 are separated from each other. There is a possibility to move in the direction to do.

However, the left and right element rows 30 in the fastener chain 1 receive a force in the direction in which the portion on the side of the meshing head 32 (that is, the central portion of the left and right element rows 30) sinks downward due to the lateral pulling force. Therefore, the opposing tape side edge 20a of the element mounting portion 23 does not move in the separating direction.

Therefore, the fastener chain 1 can stably maintain the contact state between the tape-side end edges 20a of the element mounting portion 23 even when the left and right fastener tapes 20 are subjected to a lateral pulling force, and are engaged with each other. It is possible to reliably prevent the element row 30 from being exposed to the outside.

And the slide fastener 3 as shown in FIG. 1 is manufactured by attaching the slider 4 which can be slid along the element row | line | column 30 on either side to the fastener chain 1 of this Example 1 as mentioned above. .
Further, the slide fastener 3 (or fastener chain 1) according to the first embodiment obtained in this way is suitably used for a seat cover 7 of an automobile seat 6 as shown in FIG. 6, for example.

The automobile seat cover 7 shown in FIG. 6 is configured so as to be attached to the surface of the cushion body of the automobile seat 6, and a plurality of sheet-like skin materials covering the cushion body, and the skins thereof. It has the slide fastener 3 which concerns on the present Example 1 used as the connection member which connects between materials.

In particular, in the seat cover 7, the slide fastener 3 is disposed at a portion that becomes the ridge line portion 6 a of the automobile seat 6, and the element row 30 is covered along the ridge line portion 6 a where the slide fastener 3 is disposed. The element attachment portion 23 of the wrapped fastener tape 20 is exposed to the outside.

When the slide fastener 3 according to the first embodiment is used for the seat cover 7 as described above, the tape main portion 21 or the tape bent portion 22 of the fastener tape 20 is sewn to the skin material of the seat cover 7. In this case, the slide fastener 3 can be sewn to the skin material such that the first tape surface of the tape main portion 21 of the fastener tape 20 faces the skin material of the seat cover 7, or the tape main portion 21. The second tape surface can be sewn to the skin material so that it faces the skin material of the seat cover 7.

For example, when the slide fastener 3 is sewn to the skin material so that the first tape surface of the tape main body 21 faces the skin material of the seat cover 7, the above-mentioned Patent Document 2 (Utility Model Registration No. 3152100). ), The tape main body of the fastener tape 20 so that the end portion of the skin material is embedded and accommodated inside (inner peripheral side) the tape bent portion 22 of the fastener tape 20. The portion 21 or the tape bent portion 22 is sewn to the skin material.

On the other hand, when the slide fastener 3 is sewn to the skin material such that the second tape surface of the tape main body 21 faces the skin material of the seat cover 7, the two tape surfaces of the tape main body 21 of the fastener tape 20 are sewn. Sewing is performed in a state in which the tape main body 21 and the skin material are overlapped so that the outer surface of the skin material (the surface on the side exposed to the outside) faces each other.

As described above, in the seat cover 7 in which the slide fastener 3 according to the first embodiment is attached to the skin material, the element row 30 is attached to the element of the fastener tape 20 when the left and right element rows 30 are engaged with each other. The element attachment portion 23 encapsulating the element row 30 can be made to appear like a bead at the ridge line portion 6a of the automobile seat 6 while being encapsulated by the portion 23 and concealed. Therefore, the seat cover 7 does not cause a decrease in appearance due to the exposure of the element row 30, and can have a new appearance different from the conventional hidden slide fastener.

FIG. 7 is a cross-sectional view showing a state in which the left and right element rows are separated in the fastener chain according to the second embodiment. FIG. 8 is an explanatory view schematically illustrating how the element row moves inward with respect to the element attachment portion of the fastener tape in the fastener stringer of the fastener chain. FIG. 9 is a cross-sectional view showing a state in which the left and right elements of the fastener chain are engaged with each other.

In the fastener chain 2 according to the second embodiment, when the left and right element rows 30 are separated, the tape side edge 20a ′ on the element attachment portion 23 ′ side of the fastener tape 20 ′ is The positional relationship between the element row 30 and the fastener tape 20 ′ is set so as to protrude further toward the mating counterpart than the position of the inner peripheral surface of the meshing head 32.

In addition, the fastener chain 2 according to the second embodiment, except that the positional relationship between the tape side edge 20a ′ and the inner peripheral surface of the meshing head 32 of the element row 30 is set as described above. The fastener chain 1 according to the first embodiment is configured in substantially the same manner. Therefore, in the fastener chain 2 of the second embodiment, those having the same configuration as the members and parts described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. .

The element row 30 in the fastener chain 2 of the second embodiment is sewn to the element mounting portion 23 'as in the first embodiment. That is, in the element row 30 of the second embodiment, the core string 37 is inserted between the upper and lower leg portions 33 and 34, and the lower leg portion 34 is in contact with the first tape region 24 of the element attachment portion 23 ′. The connecting portion 35 and the upper leg portion 33 are sewn in a state where they are covered with the second tape region 25 of the element attachment portion 23 ′. In particular, the upper and lower leg portions 33 and 34 of the element row 30 have a double ring of sewing threads 38 in the first tape region 24 and the second woven tissue region 25b of the second tape region 25 in the element attachment portion 23 '. It is sewn at the same time by sewing.

In this case, although the element row 30 is sewn to the element mounting portion 23 ′ while being strongly tightened by the sewing thread 38, the sewing thread 38 can be slightly expanded and contracted. For this reason, the element row 30 sewn on the element attachment portion 23 ′ uses the elongation of the sewing thread 38, and as shown in FIG. 8, the element attachment portion 23 is bent into a U shape. It becomes possible to move relatively in the chain width direction (left-right direction) toward the opening side of the element mounting portion 23 ′.

Therefore, in the fastener chain 2 of the second embodiment, as described above, the tape side edge 20a ′ on the element mounting portion 23 ′ side is on the meshing counterpart side with respect to the position of the inner peripheral surface of the meshing head 32 in the chain width direction. Therefore, when the left and right element rows 30 are engaged with each other, first, the left and right tape side edges 20a ′ are abutted against each other and come into contact with each other.

Subsequently, the left and right element rows 30 move relatively toward the opening side of the element mounting portion 23 ′ by utilizing the elongation of the sewing thread 38, so that the meshing heads 32 of the element rows 30 are arranged in the element. Since the tape-side edge 20a ′ on the mounting portion 23 ′ side protrudes toward the mating counterpart (see FIG. 8), the meshing heads 32 of the left and right element rows 30 can be meshed with each other. In this case, although the element row 30 is covered by the element attachment portion 23 ′ of the fastener tape 20 ′, a small gap is formed between the connecting portion 35 of the element row 30 and the second tape region 25 of the element attachment portion 23 ′. May be formed.

Therefore, in the fastener chain 2 of the second embodiment, before the left and right element rows 30 are engaged, the tape side edges 20a ′ on the element mounting portion 23 ′ side of the left and right fastener tapes 20 ′ are abutted and reliably contacted. Can be made.

For this reason, when the left and right element rows 30 are meshed with each other, the element rows can be stably concealed by the element mounting portions 23 ′ of the fastener tape 20 ′, and the element rows are engaged from between the left and right tape side edges 20 a ′. It can prevent more reliably that 30 is exposed. Therefore, the appearance of the fastener chain 2 of the second embodiment can be further improved.

DESCRIPTION OF SYMBOLS 1 Fastener chain 2 Fastener chain 3 Slide fastener 4 Slider 6 Car seat 6a Edge line part 7 Seat cover 10 Fastener stringer 20, 20 ' Fastener tape 20a, 20a' Tape side edge 20b Tape side edge part 21 Tape main part 22 Tape Bending portion 23, 23 'Element mounting portion 24 First tape region 25 Second tape region 25a First woven tissue region 25b Second woven tissue region 30 Element row 31 Fastener element 32 Interlocking head 33 Upper leg portion 34 Lower leg portion 35 Connecting part 37 Core string 38 Sewing thread 40 Guide part 41 Sewing needle 42 Insertion path 42a First insertion path 2b second insertion path 43 needle insertion hole

Claims (10)

1. A pair of left and right fastener tapes (20, 20 ′) and a continuous element row (30) sewn to the left and right fastener tapes (20, 20 ′), the fastener tape (20, 20 ′) The tape main part (21), the element attachment part (23, 23 ') to which the element row (30) is sewn, the tape main part (21) and the element attachment part (23, 23') And a tape bending portion (22) bent in a U-shape, and a fastener element (31) of the element row (30) includes a meshing head (32) and the meshing head A fastener chain (1, 2) for a slide fastener having upper and lower leg portions (33, 34) extending from (32) and a connecting portion (35) for connecting the fastener elements (31) adjacent to each other. And
   The tape bending portion (22) is bent with the first tape surface of the fastener tape (20, 20 ') inside,
   The element row (30) is arranged on the second tape surface side opposite to the first tape surface of the fastener tape (20, 20 ′) in the element mounting portion (23, 23 ′),
   The element mounting portion (23, 23 ′) includes a first tape region (24) in contact with the lower leg portion (34) of the element row (30), the connection portion (35) of the element row (30), and A second tape region (25) that encloses the upper leg (33) and exposes the first tape surface to the outside when the fastener chain is used;
   The upper and lower leg portions (33, 34) of the element row (30) are connected to the first tape region (24) and the second tape region of the element mounting portion (23, 23 ') by a sewing thread (38). (25)
   When the left and right element rows (30) are engaged, the opposing tape side edges (20a, 20a ') of the left and right element mounting portions (23, 23') are in contact with each other.
   Fastener chain characterized by that.
2. The fastener tape (20, 20 ′) is woven,
   The warp yarn arranged in the first tape region (24) of the element attachment portion (23, 23 ') to the warp yarn arranged in the second tape region (25) of the element attachment portion (23, 23'). Thinner thread is used,
   The fastener chain according to claim 1.
3. The fastener chain according to claim 2, wherein the thickness of the warp yarn arranged in the second tape region (25) is set to 30 dtex or more and 150 dtex or less.
4. The thickness of the warp yarns arranged in the first tape region (24), the tape bent portion (22), and the tape main portion (21) of the element mounting portion (23, 23 ') is 160 dtex or more and 500 dtex. The fastener chain according to claim 2, wherein the fastener chain is set as follows.
5. The said 2nd tape area | region (25) has several warp woven in 1/1 structure | tissue which runs alternately on the front side of at least one weft and the back side of one weft. The fastener chain described.
6. The fastener chain according to claim 5, wherein the second tape region (25) has warps woven into a 2/2 structure that alternately travels on the front side of two wefts and on the back side of two wefts. .
7. The second tape region (25) includes a first woven tissue region (25a) disposed on the first tape region (24) side and a first woven tissue region (25a) disposed on the tape side edge (20a, 20a ′) side. Two woven tissue regions (25b),
   The first woven texture region (25a) has more warps woven into the 2/2 texture than the second woven texture region (25b).
   The fastener chain according to claim 6.
8. The tape side edge (20a ') of the element mounting portion (23') 、, when the left and right element rows (30) are separated, the meshing head (32) of the fastener element (31) The fastener chain according to claim 1, wherein the fastener chain is arranged so as to protrude from the position of the inner peripheral surface toward the engagement partner side.
9. A continuous portion having a meshing head (32), upper and lower leg portions (33, 34) extending from the meshing head (32), and a connecting portion (35) for connecting between mutually adjacent fastener elements (31). The element row (30) is sewn to the fastener tape (20, 20 ') by a sewing machine,
   A guide portion (40) having an insertion passage (42) through which the fastener tape (20, 20 ′) and the element row (30) can be inserted is arranged in the sewing portion of the sewing machine, and the guide portion (40) The element attachment portions (23, 23 ') of the fastener tape (20, 20') are bent into a U-shape and guided toward the inside of the insertion passage (42) so that the first tape surface faces outward. ,
   Inside the element mounting portion (23, 23 ') which is bent into a U-shape and guided into the insertion passage (42), the element row (30) is placed on the upper and lower leg portions (33, 34) and The connecting portion (35) guides the fastener tape (20, 20 ') in a posture in contact with or facing the second tape surface opposite to the first tape surface; and
   While inserting the element mounting portion (23, 23 ') and the element row (30) into the insertion passage (42), the lower end portion (34) is in contact with the element mounting portion (23, 23'). The upper and lower leg portions (33) of the element row (30) are connected to the first tape region (24) and the second tape region (25) of the element mounting portion (23, 23 ') where the upper leg portion (33) contacts. , 34) at the same time,
   A method for sewing an element row, comprising:
10. A part of the fastener tape (20, 20 '), to which the element row (30) is sewn by the element row sewing method according to claim 9, is U-shaped so that the first tape surface faces inward. To form a tape bent portion (22), and
    Heating the fastener tape (20, 20 ′) to hold the folded form of the fastener tape (20, 20 ′);
    A method for producing a fastener stringer comprising:

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