HK1092025B - Knitted-in slide fastener - Google Patents

Description

Knitted-in slide fastener

Technical Field

The present invention relates to a woven-in slide fastener in which, while a fastener tape is woven in a warp knitting structure, a continuous fastener element row is continuously woven into an element attaching portion of a side edge of the fastener tape by being fixed by a fixing warp knitting yarn.

Background

Conventionally, various woven zippers have been proposed. According to japanese patent application laid-open No.8-308613, the basic structure of the fastener tape is constituted by a fastener chain knitting yarn, a warp plain-stitch yarn or a two-stitch yarn, and a weft inlay yarn, and each element of the fastener element row knitted into the side edge in the longitudinal direction of the fastener tape is fixed with a sinker loop of the fixing fastener chain knitting yarn. Then, needle loops of the chain knitting yarn and the warp knitting yarn of the warp plain yarn or the double stitch yarn constituting the basic structure and needle loops of the fixing chain knitting yarn are wound around each other, thereby forming a knitting structure.

Since the basic structure is constituted by two types of warp knitting yarns of the weft inlay yarn and the three warp knitting yarns, it is possible to provide an elaborate and strong structure so that the fastener element rows are firmly mounted and the fastener element rows are dimensionally stable to eliminate the pitch error. Also, an appropriate resistance is provided against bending of the slide fastener front face pushing up, thereby preventing interruption of engagement due to bending during use of the slide fastener.

In the woven slide fastener according to japanese patent No.3338997, the needle loops of the fastener tape knitting yarns constituting the basic structure are entangled with the needle loops of the fixed fastener chain knitting yarns, although the basic structure of the fastener tape is constituted by the fastener chain knitting yarns, the warp flat knitting yarns or the double stitch yarns, and the weft inlay yarns in the same manner as in the above-mentioned japanese patent application laid-open No. 8-308613. With such a configuration, the knitted fabric of the continuous fastener element row attaching portion is formed delicately, and the extension/contraction of the fabric is almost eliminated, so that the coil-shaped fastener element row to be attached to the attaching portion can be fixed in a dimensionally stable state, thereby always sufficiently maintaining the function as a slide fastener.

In the woven slide fastener disclosed in the above-mentioned documents japanese patent application laid-open No.8-308613 and japanese patent No.3338997, as described above, the needle loops of the fixing chain knitting yarns are entangled with the needle loops of the warp knitting yarns of the basic structure. This means that the respective needle loops of the two or more warp knitting yarns comprising the fixing chain knitting yarn are formed by a single needle. Incidentally, as the fixing chain knitting yarn, generally, a yarn that is extremely thick as compared with other warp knitting yarns is used because the fixing chain knitting yarn reinforces the fixing of the fastener elements and reinforces the hardness of the structure. The fixing chain weaving yarn has a double size compared with the size of the warp knitting yarn constituting the general basic structure.

Warp yarns of ordinary size or fine warp knitting yarns can form two or more needle loops from a single needle. However, if it is intended to simultaneously form two or more needle loops by the extra thick fixing warp knitting yarn and the warp knitting yarn having a normal size by using a single needle, an excessive load is applied to the needle, thereby being frequently broken, or the hook portion of the needle becomes relatively small to generate miss-stitches, thereby significantly impairing productivity.

On the other hand, as mentioned in the above-mentioned documents of Japanese patent application laid-open No.8-308613 and Japanese patent No.3338997, such woven-in slide fasteners have been required to be constructed such that a structure is formed delicately and deeply to firmly fix the fastener element rows, which are dimensionally stable to eliminate pitch errors. Moreover, it is required to ensure an appropriate resistance against bending of the slide fastener surface pushing up, thereby preventing the interruption of the coupling of the elements due to bending during use of the slide fastener.

Disclosure of Invention

Accordingly, an object of the present invention is to provide a woven-in slide fastener in which fastener element rows can be mounted in a stable state and dimensionally stable while preventing breakage of needles so as to ensure smooth engagement of the elements.

In order to achieve the above object, according to the present invention, there is provided a woven-in slide fastener in which, while a fastener tape is woven, a continuous fastener element row is fixed and woven by a fixing element weaving yarn into a fastener element attaching portion of one longitudinal side edge of a warp-knitted fastener tape woven with a basic structure composed of warp-knitted yarns, the slide fastener further comprising: a reinforcing warp knitting yarn entangled with a needle loop of the basic warp knitting yarn through a needle loop, but not entangled with a needle loop of each of the fixing chain knitting yarns through a needle loop, wherein the basic warp knitting yarn forms at least one wale of wales of the basic structure adjacent to a wale formed by the plurality of fixing chain knitting yarns in the fastener element attaching portion.

According to a preferred embodiment, the reinforcing warp knitting yarn which is not entangled with the needle loop of each fixing chain knitting yarn is inserted through the sinker loop of each fixing chain knitting yarn and folded back around the needle loop thereof on each different wale in the fastener element attaching portion respectively adjacent to the respective wales formed by the needle loop entangled with the needle loops of the basic warp knitting yarns constituting the basic structure. Also, the needle loops of the warp knitting yarns may be entangled with the needle loops of the warp knitting yarns constituting a basic structure of two wales adjoining one wale formed of the fixed chain knitting yarns.

Although the needle loops of the warp knitting yarns are intertwined with the needle loops of the basic warp knitting yarns of at least one wale of the basic structure adjacent to the wale formed by the fixed chain knitting yarns, the needle loops of the warp knitting yarns are never intertwined with the needle loops of the fixed chain knitting yarns. Generally, the warp knitting yarn is inserted in a sinker loop straddling the course of the fixed chain knitting yarn, passes around a needle loop of the fixed chain knitting yarn, and is folded back. Alternatively, each needle loop of the warp knitting yarn is entangled with the needle loop of the basic warp knitting yarn in the basic structure of two wales adjacent to the fixing chain knitting yarn but not entangled with the needle loop of the fixing chain knitting yarn.

As a result, each needle loop of the fixing chain knitting yarn and the needle loop of the warp knitting yarn are not formed by the same needle at the same time, thereby preventing the needle of the fixing chain knitting yarn from being applied with an excessive load. Since the needle loop is reliably formed, the fastener tape portion of the element attaching portion is finely formed, and the fastener element row is dimensionally stable and firmly fixed, thereby ensuring smooth engagement of the fastener elements, thereby preventing interruption of the element engagement.

Drawings

FIG. 1 is a structural view showing a warp yarn woven into the entire warp knit structure of a slide fastener according to a first embodiment of the present invention;

FIG. 2 is a warp knit construction for each of the knitting yarns;

FIG. 3 is a partial plan view schematically showing the zipper;

FIG. 4 is a structural view showing the warp yarns woven into the entire warp knit structure of the slide fastener in accordance with the second embodiment of the present invention;

FIG. 5 is a partial plan view schematically showing the zipper;

FIG. 6 is a structural view showing warp yarns woven into the entire warp knit structure of the slide fastener in accordance with the third embodiment of the present invention;

FIG. 7 is a structural view showing the warp yarns woven into the entire warp knit structure of the slide fastener in accordance with the fourth embodiment of the present invention; and

fig. 8 is a structural view showing the entire warp knitting structure of the warp knitted slide fastener according to the fifth embodiment of the present invention.

Detailed Description

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the embodiment described below, the basic chain knitting yarn 12, which is a synthetic yarn of a basic structure, is knitted into the wale W1 of the first row formed at the outermost of the element attaching portion 1a of the fastener tape 1 and the three wales W4 to W6 in the fastener tape main body 1b adjacent to the element attaching portion 1a, but no basic chain knitting yarn 12 is knitted into the other tape side edge and the other wales W2, W3, and W7 to Wn. This aims to form the fastener tape body 1b more flexibly, and of course, the basic fastener chain knitting yarn 12 can be knitted into all wales W1 and W4 to Wn except for the second and third wales W2, W3 in which the fixed fastener chain knitting yarn 14 is knitted.

Fig. 1 is a warp knitting structure of a knitted-in slide fastener according to a first embodiment of the present invention. Fig. 2 is a knitting structure of respective constituent warp knitting yarns of the slide fastener, and fig. 3 is a partial plan view schematically showing the structure of the slide fastener.

The woven-in slide fastener is woven by a general warp knitting machine having a single row needle bed, and includes a fastener tape 1 obtained by warp knitting, and a continuous fastener element row ER molded from synthetic resin monofilament, and the fastener element row is woven into an element attaching portion 1a formed at one side edge in the longitudinal direction of the fastener tape 1 while the fastener tape 1 is woven. As shown in FIG. 2, the basic structure of the fastener tape 1 is knitted with the basic warp knitting yarn 11(1-2/1-0), the basic fastener chain knitting yarn (1-0/0-1) and the basic weft inlay yarn 13 (0-0/4-4). Then, three wales W1 to W3 of the side edge portion in the longitudinal direction of the fastener tape 1 constitute the above-described element attaching portion 1 a.

According to this embodiment, monofilaments that are constituent materials of the continuous coil-shaped fastener element row ER are laterally reciprocated in the same row every other row C, and woven into the fastener tape 1 so as to form the respective fastener elements E in turn. The second wale W2 and the third wale W3 are formed of a fixing fastener chain knitting yarn 14(1-0/0-1), a basic inlay yarn 13, and a reinforcing warp knitting yarn 15 described later from the outermost edge of the fastener tape 1. In the fastener element E, as shown in fig. 3, the upper and lower leg portions L1, L2 thereof are inserted between the needle loop NL and the sinker loop SL of the fixing chain knitting yarn 14 forming the two wales W2 and W3, the top face of the upper leg portion L1 is knitted so as to be pressed by the needle loop NL of the fixing chain knitting yarn 14, and the fastener element E is fixed to the fastener tape 1 in turn.

According to this embodiment, the basic warp knitting yarn 11 and the basic chain knitting yarn 12 constituting the basic structure are not knitted into the two wales W2 and W3 in which the fixed chain knitting yarn 14 is arranged. The wale W1 formed at the outermost side of the element attaching portion 1a constitutes an ear of the fastener tape 1, but this ear is knitted with the basic element chain knitting yarn 12, the basic weft inlay yarn 13, the reinforcing warp knitting yarn 15, and the warp inlay yarn 16 (0-0/1-1). Here, the warp inlay 16 is intended to stabilize the shape of the ear portion and to secure the strength thereof. In the indicated example, the warp inlay yarn 16 is inserted in all wales W1 to W3 so as to form the fastener element attaching portion 1a elaborately.

As shown in fig. 1 and 2, two warp knitting yarns are used as the reinforcing warp knitting yarns 15 of this embodiment, and the knitting structures of the first and second warp knitting yarns 15a, 15b are 1-2/0-0 and 2-2/1-0. According to these knitting structures, the first warp knitting yarn 15a is knitted between the wale W2 of the second row from the outside formed with the fixed link knitting yarn 14 and the outermost wale W1 constituting the ear portion adjacent to the outside of the wale W2, and the second warp knitting yarn 15b is knitted between the wale W3 of the third row and the wale W4 of the fourth row adjacent to the belt main body 1b side.

As for the first warp knitting yarn 15a woven between wale W1 of the first row and wale W2 of the second row, as is apparent from fig. 1 to 3, needle loop NL of the first warp knitting yarn 15a is entangled with needle loop NL of the basic chain knitting yarn 12 in wale W1 of the first row. However, in the case of wale W2 of the second row, after the first warp yarn 15a is inserted between the needle loop NL and the sinker loop SL of the fixed chain knitting yarn 14, the first warp yarn 15a is passed around the needle loop NL of the fixed chain knitting yarn 14 and reversed. Here, the first warp knitting yarn 15a does not form the needle loop NL, and is not wound with the needle loop NL of the fixed chain knitting yarn 14 by its needle loop NL like a weft inlay yarn. Since needle loop NL of fixed chain knitting yarn 14 is formed on the same needle and at the same time, needle loop NL of first warp knitting yarn 15a is not formed and no excessive load is applied to the needle. Also, since the knitting yarn hook space of the front end hook portion of the needle is sufficient, a loop (knitting needle angle) can be reliably formed without any loosening of the knitting yarn.

The second warp knitting yarn 15b knitted between the third row wale W3 and the fourth row wale W4 adjacent to the tape main body 1b side is simultaneously formed into a needle loop by the same needle as the needle loop NL of the basic chain knitting yarn 12 formed in the fourth row wale W4 and is wound around the same needle loop NL. The second warp knitting yarn 15b wound with the fixed chain knitting yarn 14 of the wale W3 of the third row is not wound with the needle loop NL of the same fixed chain knitting yarn 14 by its needle loop, but the second warp knitting yarn 15b is inserted between the needle loop NL and the sinker loop SL of the fixed chain knitting yarn 14 like the first warp knitting yarn 15a knitted between the wale W1 of the first row and the wale W2 of the second row, and thereafter, the second warp knitting yarn 15b is reversed and wound around the needle loop NL of the fixed chain knitting yarn 14.

That is, the second warp knitting yarn 15b knitted between the third row wale W3 and the fourth row wale W4 adjacent to the tape main body 1b side is entangled with the basic structure by their needle loops. However, the second warp knitting yarn 15b is not entangled with the needle loop of the fixed chain knitting yarn 14, but is passed around the needle loop of the fixed chain knitting yarn 14 and is reversed without forming any needle loop. As a result, no excessive load is applied to the needles that fix the chain knitting yarns 14. Since the knitting hook space of the front end hook portion of the needle is sufficient, the fixed link knitting yarn 14 can be reliably formed into a loop (knitting stitch) without any needle release.

As the synthetic yarn of the fastener tape of this embodiment, a bulked textured yarn composed of polyester multifilament yarn or a flat filament yarn having a configuration before texturing processing is used, and the textured yarn or the flat filament yarn is used as the basic warp knitting yarn 11. The size is 110 to 167T (decitex). The flat filament yarn is used as the base chain knitting yarn 12, and the size thereof is 84 to 110T, which is the finest of all synthetic yarns. For the basic weft inlay yarn 13, a 167T textured yarn was used. Also, a 167T flat filament yarn was used as the warp inlay yarn 16. On the other hand, flat filament yarns of 220 to 330T are used as the fixed chain knitting yarns 14, and flat filament yarns of 167 to 220T are used as the warp knitting yarns 15.

The size of the fixing chain knitting yarn 14 is two times or more larger than that of other basic warp knitting yarns. If it is intended to form the needle loop NL with the same needle with respect to the fixing chain knitting yarn 14 and other yarns such as the reinforcing warp knitting yarn 15, an excessive load is applied to the same needle, thereby breaking the needle. Even if it is not broken, the fixing chain knitting yarn 14 and the reinforcing warp knitting yarn 15 cannot be simultaneously caught by the knitting yarn hook space of the front end hook portion of the needle. Therefore, one of the knitting yarns is released from the front end hook portion, so that a portion in which the needle loop is not formed appears. Here, the weft inlay yarns 13 and the warp inlay yarns 16 do not apply a load to the needles because they do not form any needle loops. On the other hand, the basic warp knitting yarn 11 and the basic fastener chain knitting yarn 12 constituting the basic structure of the fastener tape main body 1b form two needle loops at the same time with the same needle. However, the needles never break or any defect such as miss is not generated because the total size of these yarns is 194 to 277T and is smaller than the size of the single fixed link knitting yarn 14, thereby achieving a high-quality product with high productivity. Specifically, since the reinforcing warp knitting yarn 15 and the warp inlay yarn 16 are woven into the element attaching portion of this embodiment, a shape-stable, delicate and strong area is formed, thereby firmly fixing the fastener element E.

According to the first embodiment, all warp knitting yarns used in the slide fastener, including synthetic resin monofilaments constituting the fastener element row ER, use synthetic yarns made of polyester. However, it is also permissible to use a yarn of a thermoplastic resin such as a polyamide-based or polypropylene-based resin. Further, as synthetic yarns other than the fastener element row ER, yarns made of acetate or natural fiber yarns such as cotton or wool and the synthetic resins described above are allowed to be used. These points are the same as other embodiments described below.

Fig. 4 shows a warp knit structure of a completely concealed woven slide fastener according to a second embodiment of the present invention. Fig. 5 is a plan view schematically showing the main part of the same slide fastener. Although in the warp knitted structure of this embodiment, the warp inlay yarn is inserted in each of the three wales in the element attaching portion in a zigzag shape as in the ordinary knitted slide fastener, illustration of such warp inlay yarn is omitted.

Since the knitting structure of each knitting yarn of this embodiment is the same as that shown in fig. 2 as understood from these drawings, the same reference numerals are attached to warp knitting yarns corresponding to the above-described embodiment. That is, the basic knitting yarn constituting the basic structure of this embodiment includes the basic warp knitting yarn 11, the basic chain knitting yarn 12, and the weft inlay yarn 13. The continuous loop-shaped fastener element row ER, the weft inlay yarn 13, the fixing element chain knitting yarn 14, the reinforcing warp knitting yarn 15(15a, 15b), and the warp inlay yarn 16 are knitted into the element attaching portion 1a, while the basic warp knitting yarn 11 and the basic element chain knitting yarn 12 are excluded.

The great difference between the concealed slide fastener and the ordinary slide fastener is that: in the ordinary woven-in slide fastener, the engaging heads H of the fastener elements E mounted on the element attaching portion 1a of one side edge in the longitudinal direction of the fastener tape 1 are attached so that they protrude outward from the side edge as shown in fig. 1 and 3, while in the case of a concealed slide fastener, the engaging heads H of the fastener elements E mounted on the element attaching portion 1a are attached so that they protrude from the boundary between the element attaching portion 1a and the fastener tape main body 1b toward the fastener tape main body side in the direction opposite to the ordinary slide fastener. Then, the concealed slide fastener is bent into a U shape along the boundary of the fastener chain to which the fastener element E is attached as described above so that the fastener element row ER is positioned outside, and the configuration thereof is fixed. As mentioned above, this embodiment is not different from the first embodiment in the warp knitting structure except for the hidden structure, and its operation and effect are not different except for its well-known function as the hidden structure.

Fig. 6 shows a third embodiment of the present invention. The third embodiment differs from the first embodiment shown in fig. 2 mainly in that: two warp knitting yarns 15a-1, 15a-2 serving as a first warp knitting yarn 15a woven between wale W1 of the first row formed on the outermost side in the element attaching portion 1a and wale W2 of the second row adjacent to the wale W1; and needle loop NL of warp knitting yarns 15a-1, 15a-2 wraps with all of needle loop NL formed in each course of elementary chain knitting yarn 12 of wale W1 of the first row. Each of the reinforcing warp yarns 15a-1, 15a-2 has the same knitting structure as the first warp yarn 15a in the first embodiment, and each of them is woven in a zigzag shape, skipping every other course, into wales W1, W2 of the first and second rows.

By adopting such a structure, excessive load of the needles at the time of knitting the fixing element chain knitting yarn 14 is prevented, and further, wales W1, W2 on the outer edge of the element attaching portion 1a become denser than those of the knitted slide fastener obtained by the first and second embodiments, and in particular, all needle loops NL of the fixing element chain knitting yarn 14 knitted in the wale W2 of the second row are entangled with the first warp yarns 15a-1, 15 a-2. Thus, the tightening force of the fastener elements E by the fixing chain knitting yarn 14 is increased, thereby firmly fixing them to the fastener tape 1. As a result, the tape configuration is stabilized and smooth engagement of the fastener elements is achieved, thereby preventing disengagement of the elements and lateral sliding between the elements.

Meanwhile, according to the first to third embodiments, all the reinforcing warp knitting yarns 15, 15a, 15b, 15a-1, 15a-2 form the needle loop NL at least every other course. However, according to the fourth and fifth embodiments shown in fig. 7 and 8 of the present invention, one warp knitting yarn 15c of the reinforcing warp knitting yarn woven in zigzag in the fastener element attaching portion in the plurality of wales formed by the fixing chain knitting yarn 14 does not form any needle loop NL, and is knitted as a weft inlay yarn which is merely folded back at the needle loop NL of the fixing chain knitting yarn 14.

Fig. 7 and 8 show a general woven zipper and a woven zipper having a concealed structure. According to the fourth embodiment shown in fig. 7, the third warp knitting yarn 15c (0-0/2-2) for reinforcement knitted between the wale W3 of the third row and the wale W4 of the fourth row adopts a weft cushion structure, and the needle loop NL is not formed as described above. Also, in this fourth embodiment, the warp inlay yarn 16 is inserted in each of the wales W1 to W3 of the first to third rows. On the other hand, according to the fifth embodiment shown in fig. 8, the third warp knitting yarn 15c knitted between the wale W1 of the first row and the wale W2 of the second row is knitted with a weft cushion structure, and the needle loop NL is not formed as described above. According to the fifth embodiment, the warp inlay yarn 16 is inserted in each of the wale W2 of the second row and the wale W3 of the third row in which the fixed chain knitting yarn 14 is to be knitted.

As is apparent from the above description, it is important that at least one reinforcing warp knitting yarn woven in a plurality of wales adjacent to the fixed chain knitting yarn between the base knitting yarn and the fixed chain knitting yarn is entangled with a needle loop NL thereof with a needle loop of the base knitting yarn, although it is not required that all the reinforcing warp knitting yarns form a needle loop. Although the above embodiment uses a warp knitting yarn as one of the yarns constituting the basic structure, a double-stitch yarn may be employed instead of the above warp knitting yarn 11. According to the above embodiment, the number of wales in which the fixing element chain knitting yarn is knitted into the element attaching portion thereof is two, but it may be three. Although the above embodiment selects an example in which the needle loop NL is formed in a closed loop, it need not always be a closed loop but may be an open loop.

Claims (2)

1. A woven-in slide fastener in which, while a fastener tape (1) is woven, a continuous fastener Element Row (ER) is fixed and woven by a fixing element weaving yarn (14) into a fastener element attaching portion (1a) of one longitudinal side edge of a warp-knitted fastener tape (1), said warp-knitted fastener tape (1) being woven with a basic structure composed of a warp-knitted yarn, characterized by further comprising:

reinforcing warp knitting yarns (15, 15a, 15b, 15a-1, 15a-2, 15c) which are entangled with Needle Loops (NL) of the basic warp knitting yarns (11, 12, 13) through Needle Loops (NL), but are not entangled with Needle Loops (NL) of each of the fixing chain knitting yarns (14) through Needle Loops (NL), wherein the basic warp knitting yarns (11, 12, 13) form at least one wale of wales (W1, W4) of the basic structure adjacent to wales formed by the plurality of fixing chain knitting yarns (14) in the fastener element attaching portion (1 a).

2. The woven slide fastener according to claim 1, wherein the reinforcing warp knitting yarn (15, 15a, 15b, 15a-1, 15a-2, 15c) which is not wound with the Needle Loop (NL) of each of the fixing chain knitting yarns (14) is inserted through the Sinker Loop (SL) of each of the fixing chain knitting yarns (14) and folded back around the Needle Loop (NL) thereof on each different wale (W2, W3) in each of the wales (W1, W4) respectively adjacent to the respective wales (W2, W3) formed by the Needle Loop (NL) being wound with the Needle Loop (NL) of the basic warp knitting yarn (11, 12, 13) constituting the basic structure.