Zipper Stringer

Abstract

To provide a fastener stringer which reduces the degree of exposure of the lower leg of a monofilament in a simple or easy manner. [Solution] A fastener stringer 1 includes a fastener tape 2 woven from a plurality of warp threads 3 and weft threads 41, 42, a coiled member 8 disposed in an element mounting portion 22, and two or more attachment threads 6 extending while oscillating up and down along a warp direction D1 to fix the coiled member 8 to the element mounting portion 22. The weft threads 41, 42 are introduced so that a pair P1 of weft thread portions proceeding in opposite directions in the weft direction D2 are arranged in the warp direction D1. Each attachment thread 6 is supplied so as to repeatedly intertwine with at least an upper leg 81 on the upper side and with a pair P1 of weft thread portions on the lower side, and is supplied so that an intertwine point C1 of the attachment thread 6 and the pair P1 of weft thread portions is not located above an upper surface 82a of a lower leg 82.

Description

[Technical field]

[0001] The present disclosure relates to fastener stringers. [Background technology]

[0002] Patent Document 1 discloses a woven slide fastener in which a coil-shaped member formed by spirally winding monofilaments is woven into the structure of a fastener tape. As shown in Fig. 2 of the document, a coil-shaped fastener element (see reference number 8) is attached to the ground structure (ground warp threads, ground weft threads) of the tape by upper warp threads (see reference numbers 11 and 12) that oscillate up and down. A predetermined tension is applied to these upper warp threads for stable attachment of the coil-shaped fastener element. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 57-25204 Summary of the Invention [Problem to be solved by the invention]

[0004] It is common to apply sufficient tension to the attachment thread for stable attachment of the coiled member to the fastener tape. However, in such a case, the weft thread is lifted upward, and a part of the monofilament of the coiled member, in other words, the lower leg of the fastener element, is exposed on the opposite side of the fastener tape. If necessary, please refer to the state in which the weft thread is lifted upward by the upper warp thread on the left side of FIG. 2 of Patent Document 1. In view of the above points, the inventor of the present application has found a new problem of reducing the degree of exposure of the lower leg of the fastener element in a simple or easy manner. [Means for solving the problem]

[0005] A fastener stringer according to one embodiment of the present disclosure includes a fastener tape woven from a plurality of warp threads and at least one weft thread, and divided into a tape main portion and an element attachment portion in the weft direction, and a coil-shaped member arranged on the element attachment portion, the coil-shaped member being formed by spirally winding a monofilament and including a plurality of fastener elements each corresponding to one turn of the monofilament, the fastener elements including an upper leg, a lower leg, an engagement head, and a turnover portion, the upper leg being located farther away from the warp thread than the lower leg, and two or more attachment threads extending while oscillating up and down along the warp direction to fix the coil-shaped member to the element attachment portion. At least one weft thread is introduced at least into the element attachment portion such that pairs of weft thread portions proceeding in opposite directions in the weft direction are arranged in the warp direction. Each attachment thread of the two or more attachment threads is supplied so that it is repeatedly intertwined with at least the upper leg on the upper side and intertwined with a pair of weft thread portions on the lower side, and the intertwining point of the attachment thread and the pair of weft thread portions is not located above the upper surface of the lower leg.

[0006] In some embodiments, each of the two or more attachment yarns is provided such that the intersecting point of the attachment yarn and weft portion pair is not located above the center of the thickness of the lower leg in the vertical direction.

[0007] In some embodiments, the interlacing points are flush or nearly flush with the main body of the tape.

[0008] In some embodiments, the two or more attachment yarns include first and second attachment yarns that are staggered and intertwined with respect to pairs of weft yarn portions.

[0009] In some embodiments, the plurality of warp threads includes one, two, or three warp threads interposed between first and second attachment threads.

[0010] In some embodiments, the two or more attachment yarns include third and fourth attachment yarns that are staggered relative to the pairs of weft yarn portions.

[0011] In some embodiments, the plurality of warp threads includes one, two, or three warp threads interposed between third and fourth attachment threads.

[0012] In some embodiments, there are two pairs of weft yarn portions between adjacent legs in the warp direction.

[0013] In some embodiments, each of the two or more attachment yarns spans one upper leg between adjacent interlace points in the warp direction.

[0014] In some embodiments, at least one weft thread includes a first weft thread that alternately crosses over adjacent warps in the weft direction at the upper and lower sides in the element attachment portion, and is folded back to the opposite side with respect to the warp thread located at the outermost edge in the weft direction. A pair of weft thread portions included in the first weft thread may alternately cross over adjacent warps in the weft direction together at the upper and lower sides in the element attachment portion. The multiple warp threads may include two or more warp threads that alternately cross over pairs of weft thread portions arranged in the warp direction at the element attachment portion at the upper and lower sides. At least one weft thread includes a second weft thread that forms a tape main body together with the warp thread and the first weft thread, and the second weft thread may be intertwined with at least one core extending in the warp direction inside the coil-shaped member at a position higher than the upper surface of the lower leg.

[0015] In some embodiments, the fastener stringer further includes at least two core materials extending in a warp direction inside the coiled member. The two or more attachment threads may be positioned between the at least two core materials in a weft direction.

[0016] In some embodiments, the fastener stringer has a first side on which the upper leg of each fastener element is observed to be secured to the element attachment portion by two or more attachment threads, and an opposite second side on which the lower leg of each fastener element may be at least partially covered by a pair of weft yarn portions. Effect of the Invention

[0017] According to one aspect of the present disclosure, the degree of exposure of the lower leg of the monofilament can be reduced in a simple or easy manner. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic perspective view of a fastener stringer according to one aspect of the present disclosure. [Diagram 2] FIG. 2 is a schematic side view of the fastener stringer shown in FIG. 1. [Diagram 3] 1 is an image showing a second surface of a fastener stringer according to an embodiment of the present invention. [Figure 4] 13 is an image showing a second surface of a fastener stringer according to a comparative example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, non-limiting embodiments and features of the present invention will be described with reference to the drawings. In this specification, the directions are defined as follows: The warp direction is the same as the direction of warp thread advance, i.e., parallel to the direction of warp thread advance (regardless of the rise and fall of the warp thread relative to the weft thread). The weft direction is the same as the direction of weft thread advance (except for both side edges of the fastener tape where the direction of weft thread advance is reversed), i.e., parallel to the direction of weft thread advance (regardless of the rise and fall of the weft thread relative to the warp thread). The up-down direction is perpendicular to the warp direction and the weft direction. More simply, the warp direction corresponds to the double-headed arrow between FB in the three-dimensional coordinate system shown in FIG. 1 and is marked D1. The weft direction corresponds to the double-headed arrow between LR and is marked D2. The up-down direction corresponds to the double-headed arrow between UD and is marked D3. It is assumed that these directions can be redefined based on the explanation to be described later.

[0020] For ease of explanation, the front-back, left-right, and up-down directions are defined as follows for the three-dimensional coordinate system shown in Fig. 1. With respect to the warp direction D1, the direction from B to F is defined as the front, and the opposite direction is defined as the rear. With respect to the weft direction D2, the direction from L to R is defined as the right, and the opposite direction is defined as the left. With respect to the up-down direction D3, the direction from D to U is defined as the up, and the opposite direction is defined as the down.

[0021] The fastener stringer 1 shown in FIG. 1 is one side (left side) used as a pair of left and right fastener stringers in a slide fastener (not shown). The slide fastener has a right fastener stringer (not shown) that is a mirror image of the one shown in FIG. 1, and a slider (not shown) for engaging and disengaging the left and right fastener stringers. The left and right fastener stringers (left and right fastener elements) are engaged by the forward movement of the slider, and the left and right fastener stringers (left and right fastener elements) are disengaged by the backward movement of the slider. The explanation of the fastener stringer 1 shown in FIG. 1 also applies to the right fastener stringer (not shown), and a duplicated explanation will be omitted. The slider is a free slider or a slider with a lock function made of metal or resin, which is widely used in slide fasteners. The configuration of the fastener stringer 1 will be described in detail below with reference to FIG. 1.

[0022] The fastener stringer 1 includes a fastener tape 2, a coil-shaped member 8, two or more attachment threads 6, and at least two optional core materials 7, 9. The fastener tape 2 is woven from a plurality of warp threads 3 and at least one weft thread 41, 42, and is divided into a tape main body portion 21 and an element attachment portion 22 in the weft direction D2. Typically, two weft threads 41, 42 are used as the weft threads, the former of which is called the first weft thread 41 and the latter of which is called the second weft thread 42.

[0023] The coil-shaped member 8 is formed by winding a monofilament in a spiral shape, and is disposed in the element mounting portion 22. The coil-shaped member 8 is made up of a plurality of fastener elements 8 each corresponding to one turn of the monofilament.EL Each fastener element 8 EL The fastener element 8 includes an upper leg 81, a lower leg 82, an engaging head 83, and an inverted portion 84. The upper leg 81 is located farther from the warp yarn 3 than the lower leg 82. The engaging head 83 is a portion where the width of the monofilament is expanded by pressure or the like in the warp direction D1. For convenience of illustration, in FIG. 1, the fastener element 8 EL In particular, the exact shape of the engaging head 83 is not shown.

[0024] Each of the two or more attachment threads 6 extends while oscillating up and down along the warp direction D1 to fix the coil-shaped member 8 to the element attachment portion 22. The two or more attachment threads 6 are typically positioned between at least two core materials 7, 9 in the weft direction D2. Details of the attachment threads 6 will be described later. The core materials 7, 9 all extend in the warp direction inside the coil-shaped member 8. In the illustrated example, the core material 7 is a core thread, and a second weft thread 42 described later is intertwined with this and folded back to the opposite side (left side). The core material 9 is a core cord that is thicker and bulkier than the core thread, and is passed inside the coil-shaped member 8 to ensure its mechanical strength.

[0025] The first weft thread 41 forms the ground structure of the element mounting portion 22 together with two or more (typically, in the range of 4 to 12) warp threads 3 in the element mounting portion 22. As the first weft thread 41 extends in the weft direction D2 in the element mounting portion 22, it repeatedly straddles adjacent warp threads 3 in the same direction, alternately above and below. In addition, the first weft thread 41 is entangled with the warp thread 37 located at the outermost edge in the weft direction D2 (the rightmost one in FIG. 1), and is folded back to the opposite side (left side) (see FIG. 1).

[0026] The first weft yarn 41 forms the ground structure of the tape main body 21 together with a large number (typically in the range of 10 to 100) of warp yarns 3 in the tape main body 21. As the first weft yarn 41 extends in the weft direction D2 in the tape main body 21, it repeatedly straddles adjacent warp yarns 3 in the same direction, alternately above and below. The first weft yarn 41 is entangled with a warp yarn (not shown) located at the outermost edge in the weft direction D2 (the leftmost one in FIG. 1) and is folded back to the opposite side (right side).

[0027] Typically, the first weft thread 41 is introduced at least into the element attachment portion 22 (the entire area of ​​the fastener tape 2 in the illustrated example) so that a pair P1 of weft thread portions proceeding in opposite directions in the weft direction D2 are arranged in the warp direction D1. The pair P1 of weft thread portions repeatedly straddles the warp threads 3 adjacent to each other in the weft direction D2 on the upper and lower sides in the element attachment portion 22, and similarly, in the tape main body portion 21, repeatedly straddles the warp threads 3 adjacent to each other in the weft direction D2 on the upper and lower sides.

[0028] The second weft 42 is entangled with the core material 7 at the element mounting portion 22 and folded back to the opposite side (left side), and in short, is entangled with the core material 7 at a position above the first weft 41 (more specifically, at a position higher than the upper surface 82a of the lower leg 82) and folded back to the opposite side (left side). The introduction of the core material 7 and the second weft 42 can increase the mounting strength of the coil-shaped member 8. More preferably, the second weft 42 is introduced into the tape main body 21 in addition to the element mounting portion 22, and forms the ground structure of the tape main body 21 together with the warp threads 3 of the tape main body 21 (however, this is not necessarily limited to this embodiment). As a result, both the first and second wefts 41, 42 are introduced into the tape main body 21, and in addition to strengthening the ground structure of the tape main body 21, the structure integrity of the tape main body 21 and the element mounting portion 22 is improved, and as a result, the mounting strength of the coil-shaped member 8 is increased.

[0029] The first weft yarn 41 is introduced into the fastener tape 2 such that a pair P1 of weft yarn portions advancing in opposite directions in the weft direction D2 are arranged in the warp direction D1 in the tape main body portion 21 and the element attachment portion 22. Adjacent pairs P1 in the warp direction D1 are connected via a turned-up end 41T of the first weft yarn 41. The second weft yarn 42 is introduced into the fastener tape 2 such that a pair P2 of weft yarn portions advancing in opposite directions in the weft direction D2 are arranged in the warp direction D1 in the tape main body portion 21 and the element attachment portion 22. Adjacent pairs P2 in the warp direction D1 are connected via a turned-up end 42T of the second weft yarn 42. As shown in FIG. 1, in the tape main body 21, whether or not the pair P1 of weft yarns (specifically, the two weft yarns L11, L12 constituting the pair P1) is sandwiched between the two weft yarns L21, L22 constituting the pair P2 of the weft yarns is optional, and the order or arrangement of the weft yarns L11, L12, L21, L22 in the warp direction D1 may change depending on one or more conditions (e.g., the operating conditions of an automatic loom). In the illustrated example, in the tape main body 21, the bundle B1 in which the two weft yarns L11, L12 constituting the pair P1 are sandwiched between the two weft yarns L21, L22 constituting the pair P2 crosses in a manner that it rises and falls with respect to the warp yarns 3 of the tape main body 21. The bundle B1 includes a total of four linear portions, namely, two weft yarn portions of the first weft yarn 41 and two weft yarn portions of the second weft yarn 42. In the bundle B1, it is not essential that the weft portions L11, L12 are sandwiched between the weft portions L21, L22.

[0030] The warp threads 3 repeatedly straddle the pair P1 of the weft thread portion alternately above and below in the element attachment portion 22, and repeatedly straddle the pair P1 and the pair P2 (for example, the above-mentioned bundle B1 of four linear parts) alternately above and below in the tape main body portion 21. Typically, the up-and-down relationship of adjacent warp threads 3 in the weft direction D2 is reversed. In FIG. 1, the warp threads 31 repeatedly straddle the pair P1 and the pair P2 (for example, the above-mentioned bundle B1) arranged in the warp direction D1 alternately above and below in the tape main body portion 21. The warp threads 32 to 37 repeatedly straddle the pair P1 of the weft thread portion arranged in the warp direction D1 alternately above and below in the element attachment portion 22. The warp threads 32 to 37 are located below the pair P2 and do not contact it.

[0031] The turn-back pitch of the first weft 41 in the element attachment portion 22 is preferably set to 1 / 100th of the fastener element 8 EL However, the present invention is not limited to this and may be an odd number multiple (for example, 1 or 3 times) of the pitch of one fastener element 8. EL In short, there are two pairs P1 of weft thread portions between the adjacent lower legs 82 in the warp direction D1 (see FIG. 2). EL Increasing the number of pairs P1 per weft thread promotes coverage of the lower leg 82 due to the bulkiness of the first weft thread 41, thereby preventing or reducing the degree of exposure of the lower leg 82 of the coil-shaped member 8 on the second surface F2 (see Figure 2) opposite the first surface F1 of the fastener stringer 1 shown in Figure 1 (this point will become clearer from the explanation given below).

[0032] Like the first weft thread 41, the turn-back pitch of the second weft thread 42 in the element attachment portion 22 is set to 1 / 100th of the turn-back pitch of the fastener element 8. EL However, the pitch is not limited to this and may be an odd number (for example, 1 or 3). In the illustrated example, there are two pairs P2 of weft portions between adjacent upper legs 81 in the warp direction D1.

[0033] In this embodiment, each of the two or more attachment yarns 6 is repeatedly intertwined with at least the upper leg 81 on the upper side and with the weft pair P1 on the lower side, and is supplied so that the intertwining point C1 (see FIG. 1) between the attachment yarn 6 and the weft pair P1 is not located above the upper surface 82a of the lower leg 82. This makes it possible to completely or sufficiently prevent exposure of the lower leg 82 of the monofilament on the second surface F2 in a simple or easy manner. The intertwining point C1 can be located at the contact surface between the pair P1 and the attachment yarn 6, or at the lowest position of the contact surface.

[0034] In detail, the first weft yarn 41 (and the pair P1) is prevented from being lifted upward by the attachment yarn 6, and each fastener element 8 is secured to the second surface F2. EL This promotes the lower leg 82 of the fastener stringer 81 to be covered by the pair P1 of weft yarn portions, thereby achieving the above-mentioned effect. Although the length of the attachment yarn 6 per unit length of the fastener tape 2 becomes longer, the increase in cost or weight of the fastener stringer 1 is negligible.

[0035] The fastener stringer 1 is made up of fastener elements 8 as shown in FIG. EL The first surface F1, on which the upper leg 81 of the coiled member 8 is fixed to the element mounting portion 22 by two or more attachment threads 6, is observed, may be used as the side viewed by the user, but the second surface F2 opposite to the first surface F1 may be used as the side viewed by the user. In such a case, if the first weft thread 41 (or the pair P1) is lifted upward by the attachment thread 6, a recess is formed at the corresponding position on the second surface F2, and as a result, the lower leg 82 of the coiled member 8 is exposed like a rib. In this embodiment, thanks to the above-mentioned characteristics, the exposure of the lower leg 82 of the monofilament can be completely or sufficiently prevented by the ground structure (warp threads 32 to 37, first weft thread 41) of the element mounting portion 22 (for example, without introducing an additional thread to prevent the exposure of the lower leg 82).

[0036] More preferably, each of the two or more attachment yarns 6 is supplied so that the intertwining point C1 of the pair P1 of the attachment yarn 6 and the weft yarn portion is not located above the center of the thickness of the lower leg 82 in the vertical direction (for example, a plane PL1 set at the center of the thickness of the lower leg 82 as shown in FIG. 2). This more effectively suppresses the occurrence of visible indentations on the second surface F2. Optimally, the intertwining point C1 is located in the same plane or approximately the same plane as the tape main body 21, and as a result, the occurrence of visible indentations is prevented over the entire area of ​​the second surface F2.

[0037] It is advisable to introduce first and second attachment threads 61, 62 that are alternately intertwined with the pair P1 of the weft thread portion (arranged in the warp direction D1). The first and second attachment threads 61, 62 are intertwined with different pairs P1 and folded back to the upper side. Compared to the case where this is not the case, the bulkiness of the first weft thread 41 (pair P1) is maintained and the exposure of the lower leg 82 is effectively suppressed. As an option, the warp thread 34 can be inserted between the first and second attachment threads 61, 62 (not limited to one warp thread, but two or three warp threads are also possible), which makes it difficult for the first weft thread 41 (pair P1) to be lifted upward by the first and second attachment threads 61, 62.

[0038] Furthermore, it is preferable to introduce third and fourth attachment threads 63, 64 that are intertwined with the pair P1 of the weft thread portion (arranged in the warp direction) in a staggered manner. The third and fourth attachment threads 63, 64 are intertwined with different pairs P1 and folded back to the upper side. Compared to the case where this is not the case, the bulkiness of the first weft thread 41 (pair P1) is maintained and the exposure of the lower leg 82 is effectively suppressed. As an option, a warp thread 35 can be inserted between the third and fourth attachment threads 63, 64 (not limited to one warp thread, but two or three warp threads are also possible). Note that the first attachment thread 61 and the third attachment thread 63 are intertwined with the same pair P1, but there is at least the second attachment thread 62 between them, there is a sufficient weft-direction interval, and this is even more so when there is a warp thread 34. The same explanation applies to the second attachment thread 62 and the fourth attachment thread 64.

[0039] Even if the number of attachment threads such as the above-mentioned first to fourth attachment threads 61, 62, 63, 64 is increased, the intertwining points C1 of each attachment thread and pair P1 are still in the same plane or approximately the same plane as the tape main body 21, and therefore the flatness of the second surface F2 is not impaired. The number of attachment threads can be increased or decreased depending on the size of the coil-shaped member 8, but in order to ensure sufficient attachment strength of the coil-shaped member 8, it is preferable to have two, three, or four or more, which complements the attachment strength of the coil-shaped member 8 that may be reduced depending on the length of the attachment threads 6 included in the unit length of the fastener tape 2 described above. The above-mentioned staggered intertwining points also contribute to complementing the attachment strength.

[0040] The attachment thread 6 can be intertwined with the upper leg 81 on the upper side for the pair P2. The first attachment thread 61 and the second attachment thread 62 are connected to a certain fastener element 8 EL The first attachment yarn 61 intertwines with a pair P2 that is behind the upper leg 81, and the second attachment yarn 62 intertwines with another pair P2 that is ahead of the upper leg 81. This ensures that the pair P2 crosses the first attachment yarn 61 above and similarly crosses the second attachment yarn 62 above, suppressing exposure of the upper leg 81 by the second weft yarn 42 (e.g., its bulkiness). The same applies to the third and fourth attachment yarns 63, 64.

[0041] Next, a description will be given mainly with reference to FIG. 2. As shown in FIG. 2, each of the first and second attachment threads 61, 62 has one upper leg 81 that crosses over the upper side between the adjacent interwoven points C1 in the warp direction D1. The first attachment thread 61 has one lower leg 82 between the adjacent interwoven points C1 in the warp direction D1, but this lower leg 82 is not crossed over by the first attachment thread 61 on the lower side. Similarly, the second attachment thread 62 has one lower leg 82 between the adjacent interwoven points C1 in the warp direction D1, but this lower leg 82 is not crossed over by the second attachment thread 62 on the lower side. Typically, all fastener elements 8 ELThe lower leg 82 of the monofilament is not straddled below by any of the attachment yarns. Therefore, the exposure of the lower leg 82 is not prevented by the attachment yarns and is prone to being exposed. As described above, in this embodiment, the intertwining point C1 of the attachment yarn 6 and the pair P1 of the weft yarn portion is not located above the upper surface 82a of the lower leg 82, so that the exposure of the lower leg 82 of the monofilament on the second surface F2 is completely or sufficiently prevented by the ground structure (warp yarns 32 to 37, first weft yarn 41) of the element attachment portion 22.

[0042] As shown in FIG. 2, the second attachment thread 62 is EL The first attachment thread 61 is not passed between the upper leg 81 and the lower leg 82 of the fastener element 8. EL The first and second attachment threads 61, 62 are passed between the upper leg 81 and the lower leg 82 of the fastener element 8. EL This promotes pitch stabilization in the weaving machine or easier weaving of the attachment thread 6 in the weaving machine.

[0043] Typically, the number of oscillations of the attachment thread 6 is equal to the number of times the fastener element 8 in the fastener tape 2 is 80. EL The amplitude of one movement of the attachment thread 6 corresponds to the total number of fastener elements 8 located at the rearmost position in FIG. EL_1 The fastener element 8 located one position ahead of the upper leg 81 EL_2 It corresponds to the length until it reaches a position on the upper leg 81.

[0044] Fig. 3 is an image of the second surface of the fastener stringer having the structure shown in Fig. 1. Fig. 4 is an image of the second surface of the fastener stringer according to the comparative example. The effect of the features according to this embodiment can be clearly seen by comparing Figs. 3 and 4. In particular, the arrangement of the rib-like lower legs in Fig. 4 is completely or almost completely invisible in Fig. 3.

[0045] In light of the above disclosure, those skilled in the art can make various modifications to each feature and each embodiment. The reference numerals included in the claims are for reference only and should not be used to limit the interpretation of the claims. [Explanation of symbols]

[0046] 1: Zipper stringer 2: Zipper tape 3: Warp threads 6: Attachment thread 7: Core material 8: Coil-shaped member 8 EL : Zipper element 9: Core material 21: Tape main body 22: Element mounting part 41: First weft 42: 2nd weft 61-64: 1st to 4th attachment threads 81: Upper leg 82:Lower leg 82a:Top surface 83: Engagement head 84: Reversal section C1 :Confounding point F1: 1st page F2: 2nd side P1: Pair P2: Pair

Claims

1. a fastener tape (2) woven from a plurality of warp threads (3) and at least one weft thread (41, 42) and divided in a weft direction (D2) into a tape main body portion (21) and an element attachment portion (22); The coil-shaped member (8) is arranged on the element mounting portion (22), and the coil-shaped member (8) is formed by helically winding a monofilament, and includes a plurality of fastener elements (8) each corresponding to one turn of the monofilament. EL ), and the fastener element (8 EL a coil-shaped member (8) including an upper leg (81), a lower leg (82), an engagement head (83), and an inversion portion (84), the upper leg (81) being located farther away from the warp yarns (3) than the lower leg (82); A fastener stringer (1) including two or more attachment threads (6) extending while oscillating up and down along a warp direction (D1) to fix the coil-shaped member (8) to the element attachment portion (22), The at least one weft yarn (41, 42) is introduced into at least the element mounting portion (22) such that a pair (P1) of weft yarn portions proceeding in opposite directions in the weft direction (D2) are arranged in the warp direction (D1); a fastener stringer in which each of the two or more attachment threads (6) is repeatedly intertwined with at least the upper leg (81) on its upper side and with the pair of weft yarn portions (P1) on its lower side, and is supplied such that an intertwining point (C1) of the attachment thread (6) and the pair of weft yarn portions (P1) is not located above an upper surface (82a) of the lower leg (82).

2. The fastener stringer according to claim 1, wherein each of the two or more attachment threads (6) is supplied such that an intersecting point (C1) of the attachment thread (6) and the pair (P1) of the weft thread portion is not located above the center of thickness of the lower leg (82) in the vertical direction.

3. The fastener stringer according to claim 1 , wherein the interlacing points (C1) are located in the same plane or approximately the same plane as the tape main body portion (21).

4. The fastener stringer according to claim 1 , wherein the two or more attachment threads (6) include first and second attachment threads (61, 62) that are alternately intertwined with the pair of weft thread portions (P1).

5. The fastener stringer according to claim 4, wherein the plurality of warp threads (3) includes one, two or three warp threads (34) interposed between the first and second attachment threads (61, 62).

6. The fastener stringer according to claim 4, wherein the two or more attachment threads (6) include third and fourth attachment threads (63, 64) that are alternately intertwined with the pair of weft thread portions (P1).

7. The fastener stringer according to claim 6, wherein the plurality of warp threads (3) includes one, two or three warp threads (35) interposed between the third and fourth attachment threads (63, 64).

8. The fastener stringer according to claim 4, wherein there are two pairs (P1) of weft portions between adjacent lower legs (82) in the warp direction (D1).

9. The fastener stringer according to claim 1, wherein each of the two or more attachment threads (6) crosses one of the upper legs (81) between adjacent interlacing points (C1) in the warp direction (D1).

10. The fastener stringer according to any one of claims 1 to 9, wherein the at least one weft thread (41, 42) repeatedly crosses over the warp threads (3) adjacent to each other in the weft direction (D2) alternately above and below each other in the element attachment portion (22), and includes a first weft thread (41) that is intertwined with the warp thread (37) located at the outermost edge in the weft direction (D2) and folded back to the opposite side.

11. The fastener stringer according to claim 10, wherein the pair (P1) of weft portions included in the first weft thread (41) repeatedly alternately straddles the warp threads (3) adjacent to each other in the weft direction (D2) together on the upper and lower sides in the element attachment portion (22).

12. The fastener stringer according to claim 10, wherein the plurality of warp threads (3) include two or more warp threads (33, 34, 35, 36, 37) that repeatedly cross over and alternately above and below pairs (P1) of weft thread portions arranged in the warp direction (D1) in the element attachment portion (22).

13. The fastener stringer according to claim 10, wherein the at least one weft thread (41, 42) includes a second weft thread (42) that forms the tape main body (21) together with the warp thread (3) and the first weft thread (41), and the second weft thread (42) is intertwined with at least one core material (7) extending in the warp direction (D1) inside the coil-shaped member (8) at a position higher than an upper surface (82a) of the lower leg (82).

14. At least two core members (7, 9) extending in a radial direction (D1) inside the coil-shaped member (8), The fastener stringer according to any one of claims 1 to 9, wherein the two or more attachment threads (6) are positioned between the at least two cores (7, 9) in the weft direction (D2).

15. The fastener stringer (1) includes each fastener element (8 EL The fastener element (8) has a first surface (F1) on which the upper leg (81) of the fastener element (8) is fixed to the element mounting portion (22) by the two or more mounting threads (6), and a second surface (F2) on the opposite side of the first surface (F1). EL 10. The fastener stringer according to claim 1, wherein the lower leg (82) of the weft thread portion (P1) is at least partially covered by the pair of weft thread portions (P1).

Images