KR20040069266A - Slide fastener tape - Google Patents

Abstract

PURPOSE: A tape for a slide fastener is provided to obtain a beautiful sewed product regardless of which the sewed product is hard or soft. CONSTITUTION: At least some parts of constituent yarns are extended in a warp direction outside and adjacent a core thread woven or knitted in an element attachment edge portion(4). The yarns have a higher elongation recovery ratio than all the other constituent yarn(6c to 6n) and the core threads extending in the warp direction. The elongation recovery ratio is expressed by the following equation. R={(L1-L2)/(L1-L0)}*100, wherein L0 is an original length of yarn, L1 is a length of yarn when pulled under a predetermined tension, and L2 is a length of yarn after formed to have a positive pucker condition.

Description

Tape for slide fastener {SLIDE FASTENER TAPE}

The present invention relates to a tape for a slide fastener obtainable by knitting and knitting; Specifically, the fastener stringer to which the element is attached through a strong tension and various heat treatments has a regular packer shape that is finely concave on the element attachment side, and the fine recess is absorbed by shrinkage of the tape body during sewing, and thus the tape body Or it relates to a tape for the slide fastener that the sewing surface is not uneven and the entire surface is sewn into a uniform plane.

The slide fastener tape (hereinafter referred to as fastener tape) has a plurality of elements that are engaged with the other element along one edge with an equal pitch, a slider is inserted into the element row, and an upper and lower stopper is attached to the end of the element row. After the slide fastener is manufactured to the required length, it is a slide fastener-only tape which can be sewn and attached to clothes or various bags.

The fastener tape includes a tape main body and an element attachment edge installed at one side thereof. In order to stabilize the attachment form of each element and to increase its attachment strength, the element attachment edge has a thicker core than other inclinations, which is incorporated or incorporated along the tape length direction simultaneously with the weaving or knitting of the tape.

Due to the difference in structure and structure between the tape main body and the element attachment edge, generally, the element attachment edge where the core is disposed has less heat shrink than the tape main body. As a result, the fastener tape which has undergone various heat treatment processes is likely to generate an arc, that is, a reverse packer, in which the tape main portion greatly contracts and the element attachment edge is convex outward.

On the other hand, when the metal element or the synthetic resin element is attached, in order to ensure a constant pitch of the element, in particular, the fastening tape element is attached to the edge of the fastening tape element is large tension, the element is attached with the element attachment edge and the tape main body is extended . As a result, even after the tension is released, the portion to which the element is attached does not return to its original length, but the element attachment edge side of the fastener tape protrudes outward again to the outside, whereby the reverse packer shape tends to be larger. This tendency is particularly pronounced for slide fasteners that require flexibility and stretch.

In order to eliminate such a state, for example, according to Japanese Patent Application Laid-Open No. 59-5180 (Patent Document 1), in a fastener tape composed of a double-sided knitted fabric, a texture yarn is used as a constituent strand of the tape main body portion, A core coated by the yarn continuously hitting from the tape main body part is disposed on the element attachment edge, and the non-shrinkage rate of the core is made to be larger than the non-shrinkage rate of the texture yarn. I suggest that.

By adopting such a configuration, even if the heat treatment is performed, the shrinkage difference between the element attachment edge and the tape main portion causes the element attachment edge to be in a curved shape in which the element attachment edge is concave inward. Even if the edge portion is contracted, the elasticity of the tape main body can be followed to obtain a fastener stringer whose linearity is maintained after the element is attached. As a result, it can be attached in a state well suited to flexible and stretch-rich coatings and the like.

On the other hand, if a non-stretch strand used for a normal fastener tape material is used for the fastener tape formed by a normal woven structure, since there is no elasticity in the main part based on the fabric structure, a fastener occurs in the fastener tape. The fastener stringer cannot modify the packer shape into a straight line, and the sewing becomes complicated when sealing the cloth, and the slide fastener attached to the cloth after sewing becomes uneven and uneven throughout the longitudinal direction. This will be a lot.

In order to solve such a state, for example, according to Japanese Patent Application Laid-Open No. 2002-209613 (Patent Document 2), a tape for slide fastener including a tape main body obtained by weaving and an element attachment edge into which a core is directly inserted is provided. In the tape main body portion, the inclined yarn is composed of a texture yarn having a lower heat shrinkage rate than other warp yarns; The core includes a multifilament having a high non-shrinkage rate, and the non-shrinkage rate of the inclination adjacent to the inner side of the core is composed of a texture yarn that is higher than the non-shrinkage rate of the local warp yarn used in the tape main body and lower than the non-shrinkage rate of the core. A slide fastener tape is proposed.

The fastener tape has a reverse packer shape in which the element attachment edge is slightly protruded outwardly and curved due to the difference in the straight structure between the tape main portion and the element attachment edge during weaving. When a short-time dry heat treatment is performed on this type of fastener tape, the shrinkage amount of the element attachment edge and the warp amount of the warp disposed in the tape main body are almost unchanged, and the shrinkage amount of the element attachment edge is slightly increased, so that there is no packer during weaving. The entire fastener tape is almost straight.

In addition, the shrinkage amount of the fastener tape by dyeing decreases in the order of the core, the inclination adjacent to the core, and the tape main body portion, thereby forming an arcuate regular packer in which the element attachment edge side is recessed inward, and the tape main body side is uneven. A bias is generated. In this state, when attaching the fastener element, a large tension is particularly applied to the element attachment edge. Therefore, although the element attachment edge is elongated by the tension at the time of element attachment, this elongation is less than the shrinkage amount by heating, causing the element attachment edge to be almost straight. On the other hand, since the elongation does not occur in the tape main body portion when the element is attached, the bias state is maintained.

In this way, the non-shrinkage ratio of the core with respect to the element attachment edge of the fastener tape is made larger than the non-shrinkage ratio of the inclination adjacent to the inner side of the core, thereby changing the thermal shrinkage deviation between the element attachment edge and the tape main body stepwise, Stepwise shrinkage does not occur in the boundary area between the tape and the main body. When the slide fastener is sewn to the to-be-sealed product, since the element attachment edge of the fastener stringer is straight, the sewing operation is accurate, and after sewing, the slide fastener becomes a beautiful product without a rugged state over the longitudinal direction.

However, when the slide fastener chain is sewn to the to-be-sealed product, shrinkage is caused in particular in the fastener tape to be sewn due to the tension of the serving. Therefore, as in Patent Document 1 and Patent Document 2, when the packer does not occur in the slide fastener before sewing, and the straight line in which the element and the fastener tape are included in the same plane is easy, the fastener tape tends to be uneven along the seam. When the flexibility of the packaged products, such as thin Maryas products or thin fabrics, is abundant, the packaged products also become bumpy with fastener tapes, leading to deterioration of the value of the products.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and to provide a fastener tape for a nonwoven fabric slide fastener capable of obtaining a beautifully sewn product regardless of the hardness of the to-be-sealed product.

The above object is a slide fastener tape comprising a tape main portion obtained by weaving and knitting, which is a basic configuration of the present invention, and an element attachment edge in which a core is directly inserted or incorporated, wherein the tape is a radial direction adjacent to an outer side of the core. A strand having a larger elongation recovery (R) with respect to tensile strength obtained by measurement according to JIS L1096 is used, compared to all the other strands and cores of which the element-stranded edges which extend and are disposed extend in the radial direction. It is characterized by.

The fastener tape has an almost straight element attachment edge due to the difference in the structure between the tape main body and the element attachment edge when weaving or knitting and the difference in the recovery rate (R) of the constituent strands of the tape main body and the element attachment edge. And the tape main body becomes slightly rugged. Even if the short-time dry heat treatment and high temperature dyeing are performed in such a form, when the shrinkage amount of the element attachment edge and the shrinkage amount of the constituent strand extending in the radial direction of the tape main body are hardly changed, the form during weaving and knitting does not change significantly.

In this state, when attaching the fastener element, the fastener tape is strongly tensioned together with the main portion and the element attachment edge, but in particular, the element attachment edge is relatively strong. When the element is attached, the element attachment edge and the tape main portion are elongated together by the tension, but the extension recovery rate R of the component strand disposed outside the core of the element attachment edge is extended in the radial direction of the tape main portion ( Since it is larger than R), the element attachment edge is close to the original length, but one tape main body has a small return, and the element attachment edge has a concave arcuate shape that is concave, so that the tape main body is uneven.

When the fastener tape part of the slide fastener having such a shape is sewn to the to-be-sealed product, the tape main body is flattened by the sewing shrinkage generated during sewing, and is sewn to fit well to the to-be-sealed product. In other words, even after sewing the slide fastener, it is possible to obtain a beautiful product which does not have an uneven state in the longitudinal direction.

Elongation recovery rate (R) at this time measures each strand length according to JISL1096, and can obtain | require by following formula (1). Therefore, since the elongation recovery rate R of the constituent strands arranged outside the core of the element attachment edges according to the present invention becomes a relative value with the elongation recovery rate R of the other constituent strands, it is difficult to determine them uniformly. The elongation recovery rate (R) of the constituent strands arranged outside the core of the metal is preferably 85% or more because it is more likely to be set higher than other materials. Elongation recovery (R) of ordinary multifilament or monofilament stays only 80%.

R = {(L1-L2) / (L1-L0)} × 100 ---------- (1)

However, L0 is the original strand length, L1 is the strand length when tensioned under a predetermined tension, and L2 is the strand length after recovery under tension.

When measuring strand length according to JIS L1096, one end of the test piece is fixed to the upper clamp by using a tensile tester or a device having equivalent performance, and an initial load is applied to the other end, and a mark is placed 20 cmk from the lower end of the clamp of the test piece. . Subsequently, a load of 14.7 N (1.5 kgf) is quietly applied, and after 1 hour, the length between the displayed portions is measured. Subsequently, after 30 seconds and 1 hour after the load was removed, the initial load was applied, and the length between the portions marked again after 1 hour was measured. Elongation recovery rate (R) (%) was obtained by the above equation (1), and 30 Three average values are calculated for each second and one hour later.

The elongation recovery rate R is sequentially set smaller in the order of the component strands of the element attachment edges arranged in the radial direction adjacent to the outer side of the core, the cores, and the other entire component strands arranged in the radial direction of the tape main body portion. It is desirable to be. By adopting such a configuration, even if the fastener tape is extended evenly and placed in a no-load state, it extends in the radial direction of the constituent strands of the element attachment edges arranged in the radial direction adjacent to the outer side of the core, the core, and the tape main body portion. Return to their original lengths in the order of the other whole constituent strands arranged, and obtain respective elongation recovery operations without steps between these strands, and have a regular packer shape in which the element attachment edge side is curved in concave arcuate shape; When sewing the slide fastener to the to-be-sealed product, the rugged state of the tape main body absorbs the shrinkage at the time of sewing, makes sewing work easy and accurate, and can obtain a beautiful product even after sewing.

In the present invention, the thickness of the single strand having a large elongation recovery rate R is preferably set to be thicker than the single strand thickness of all other constituent strands arranged to extend in the radial direction. When the thickness of a single strand having a large elongation recovery rate (R) is thicker than the thickness of a single strand of all the other constituent strands arranged to extend in the radial direction, the recovery rate after elongation is large, and the reverse packer shape until temporary element attachment is Even if it is remarkable, it can be reliably deformed into a fine fixed packer after the element is attached.

Representative materials of the strands having high elongation recovery rate (R) include condensation polymers of nylon, n-propanediol and telephthalic acid, and other whole constituent strands extending in the radial direction from the tape main body other than these strands. It is preferable to use a multifilament made of polyester because a remarkable difference can be given to the elongation recovery rate (R) between the two. In the case of fastener tapes obtained by weaving, the use of a texture yarn for the entire warp used for the element attachment edge and the tape main body portion is preferable because the cobalt can be prevented, but in the fastener tape by knitting, It is not necessary to make a texture yarn because there is no possibility of co-taking.

1 is a partially enlarged perspective view schematically showing a representative embodiment of a fastener tape structure according to the present invention;

2 is a cross-sectional view taken along the line II-II of FIG.

Fig. 3 is an explanatory diagram schematically showing the shape change of each fastening tape for each processing step;

Fig. 4 is a sectional view corresponding to Fig. 2 as a modification of the embodiment.

FIG. 5 is a sectional view corresponding to FIG. 2 as another modification of the above embodiment; FIG.

6 is a partial plan view schematically showing a representative embodiment of a piece structure of a fastener tape according to the present invention;

Fig. 7 is a partial plan view showing a modification of the embodiment.

[Description of Symbols for Main Parts of Drawing]

1: fastener tape 2: weft

3: fastener element 4: attachment edge

5: tape main part 6a, 6b: inclination

R: elongation recovery

Figure 1 shows an example of the fabric structure of the fastener tape which is a representative embodiment of the present invention. The fabric structure in this figure is shown in a coarse state, but is in fact a dense structure.

Since the fastener tape 1 by this kind of weaving is knitted by a narrow weaving machine commonly referred to as a needle weaving machine, as shown in Fig. 1, one strand reciprocates in one opening due to the inclination and two sets of The weft yarn is composed of the weft insertion is made. In addition, in this figure, although the two strands 2a and 2b which comprise the set of weft-inserted weft 2 are shown in the state of being spaced apart from each other, they are actually closely contacted with each other up and down. In addition, the loop end formed at the padding end of the weft yarn 2 is entangled with the loop end of the weft yarn 2 not shown, which is manufactured next time using a Vera needle (not shown), and an ear portion is formed at one edge of the fastener tape 1. Form. A fastener element 3 shown in phantom in FIG. 2 is attached to the edge on the side opposite to the ear portion formed by entangled loop ends of the weft yarn 2.

That is, the fastener tape 1 has an element attachment edge 4 to which the fastener element 3 is attached, at the edge opposite to the unshown ear portion formed by entangled the loop ends of the weft yarn 2, and the element. The tape main part 5 is provided from the attachment edge part 4 to the ear shape part not shown on the opposite side. In this embodiment, as the strands 2a and 2b constituting the weft yarn 2, a thin texture yarn made of 330 dTex polyester is used.

In addition, in the illustrated embodiment, two inclined portions 6a and 6b disposed on the outside adjacent to the element attachment edge 4 are nylon multifilaments thicker than the other inclined portions 6c, 6d, 6e, ..., 6m and 6n. Is disposed, two cores 7a and 7b are disposed adjacent to the inside of the two inclined portions 6a and 6b, and one set of inclinations is formed by two strands adjacent to the inside of the cores 7a and 7b. Two set of inclinations 6c-6f which consist of the texture yarn of polyester to comprise are arrange | positioned, and the element attachment edge part 4 is comprised.

Further, a large number of local warp yarns 6g, 6h, ..., 6m, 6n are disposed in the tape main body 5 reaching the ear portion from the inside thereof. Two of these local inclinations 6g, 6h, ..., 6m, 6n are also directly integrated. In addition, the two slanted slants 6o-1 and 6o-2 disposed outside the two slants 6a and 6b disposed on the outside adjacent to the element attaching edge 4 are the element attaching edges 4. It has a function of supporting the form of the end edge of the. According to the present embodiment, the entire structure except for the cores 7a and 7b is a plain weave tissue when two pairs of local warp yarns are used.

In this regard, two warp yarns 6a and 6b having a high elongation recovery rate R disposed on the outside adjacent to the element attachment edge 4 of the fastener tape 1 according to the present embodiment have a thickness of 470 dTex, respectively. It consists of nylon multifilament having two cores (7a, 7b) is a core material of three polyester multifilament having a thickness of 560dTex each composed of raw yarns as a core material, the knitting yarn around 267dTex Is coated with, and a texture yarn made of polyester of 330dTex is used for each of the inclinations 6c, 6d, ..., 6m, 6n on the tape main body side of the element attachment edge 4. In addition, a texture yarn made of 235 dTex polyester is used for the two slender slits 6o-1 and 6o-2 disposed on the outermost side of the element attachment edge 4.

In the present invention, the inclination 6a disposed adjacent to the outer side of the cores 7a and 7b in order not to generate a reverse packer during the manufacture of the fastener stringer and to have a regular packer shape in which the element attachment edges are finely concave curved. , 6b) is not elongated by the hydraulic pressure during the injection of the fastener element and during the dyeing process. Elongation recovery rate R of the two inclinations 6a and 6b with the said two high recovery rate R is 94.3%, and the elongation recovery rate of the inclinations 6c, 6d, ..., 6m, 6n arrange | positioned at the tape main-body part side. (R) is 67.0%, and the recovery rate (R) of the cores 7a and 7b is 73.1%; The elongation recovery rate R is in the order of the two inclinations 6a, 6b adjacent to the outer side of the element attachment edge, the cores 7a, 7b, and the inclinations 6c, 6d, ..., 6m, 6n disposed on the tape main body side. It becomes small sequentially.

In addition, the cores 7a and 7b have a non-shrinkage ratio of 15%, which is very large compared to other inclinations, and greatly increases the heat set shrinkage from 5% to 7%. Further, the elongation recovery rates R of the two slanted slants 6o-1 and 6o-2 disposed on the outermost side of the element attachment edge 4 are also inclined 6c, 6d, ..., 6m disposed on the tape main body side. , 6n) and the recovery rate (R).

In the present invention, in order to prevent the reverse packer from occurring during the manufacture of the fastener stringer, the cores 7a and 7b can secure high shrinkage, and the tape on the side of the element attachment edge after the fastening tape 1 passes through the dyeing step. It is also important to reduce the elongation so that the core portion is not elongated during the injection of fastener elements (not shown). To this end, the structure of the cores 7a and 7b is the same as the core structure disclosed in, for example, JP 55-21605 A, surrounding the core material, and a sinker loop composed of a plurality of knitting yarns is formed. It is covered with a cross tube obtained by crossing. In addition, in this embodiment, 330 dTex x 2 polyester raw multifilament is used as the core material, and the specific shrinkage ratio is set to 15% as high.

Since the present embodiment uses a different type of inclination than the structure described above, each time the predetermined heat treatment step is performed, the fastener tape 1 undergoes a change in shape as shown in Figs. 3A to 3E. In particular, it is possible to obtain a form in which a fixed packer is formed to be finely concave at the edge portion of the element attached, and the micro bumpy state is corrected by shrinkage of the fastener tape generated during sewing on the counterpart side-sealed product. A sewing form can be obtained easily.

Specifically, referring to FIG. 3, first, the fastener tape 1 during weaving is formed by the inclinations 6o-1, 6o-2, 6a, 6b, ..., 6m, 6n and the cores 7a, 7b. Assuming that is fabricated with the same tension, the slopes 6a, 6b having a high elongation recovery rate R return to their original lengths, but the other slopes 6o-1, 6o-2, ..., 6m, 6n And the cores 7a and 7b are not returned to their original lengths, but are generally woven in the form of an arched regular packer with the element attachment edge side finely concave inward as shown in FIG. 3A. However, at the time of such weaving, due to the difference between the thread and the structure used for the element attachment edge 4 and the tape main portion 5, the element attachment edge 4 is almost straight, and the tape main portion 5 is fine. It is the degree that an uneven bias is generated.

The fastener tape 1 thus obtained is dyed. Dyeing is usually wound around the fastener tape (1) in a dyeing beam (not shown), immersed in a dyeing solution circulating inside the dyeing machine for each beam, and dyed at high temperature. Therefore, uniform dyeing is impossible unless the fastener tape 1 is wound around the beam evenly. As described above, the heat set is once performed on the fastener tape 1 having the packer shape during weaving under dry heat. At this time, the fastener tape 1 is subjected to the same tension, so that ten sets are executed in a straight line and a constant winding to the beam is ensured.

In the dyeing, the cores 7a and 7b are shrunk when a woven tape is subjected to heat set for 1 minute under dry heat of, for example, 180 ° C., but since the heat set processing time is short, the core 7a is shown in Fig. 3B. , 7b) is not yet fully contracted, the shrinkage difference with the tape main body 5 with respect to the element attachment edge 4 at the time of thermal setting is very fine, and the bias of the tape main body 5 is also hardly remarkable.

Subsequently, when the fastener tape 1 is immersed in a high pressure dyeing solution at 130 ° C. for 40 minutes, the element attachment edge 4 is contracted the most, followed by the cores 7a and 7b in order to tape the tape. Shrinkage difference between the main body portion 5 is generated, and the shape of the fixed packer becomes clear as shown in FIG. 3C, and at the same time, it can be seen visually that an uneven bias occurs in the tape main body portion 5. do.

Following dyeing, the fastener element 3 is injection molded at a high temperature to be integrated with the element attachment edge 4 of the fastener tape 1. In this injection molding, uniform tension is applied to straighten the fastener tape 1, and the greatest tension acts on the element attachment edge 4 to extend. When the molding is completed and the tension is opened, the elongation of the element attaching portion of the element attaching edge 4 is not recovered, but the tape portion between the elements is greatly elongated or recovered. At this time, the extension recovery of the cores 7a and 7b and the tape main body 5 is small, and the inclinations 6a and 6b adjacent to the outer side of the cores 7a and 7b due to the variation in the extension recovery rate R and the core ( 7a, 7b) and the inclination 6c, 6d, ..., 6m, 6n on the tape main-body part side are going to return to original length. Therefore, the inclinations 6a and 6b adjacent to the outer side of the cores 7a and 7b are restored to the original length, and the recovery amount of the inclinations 6c, 6d, ..., 6m, 6n on the tape main body side is the smallest. As a result, in the finished fastener chain 9, as shown in Fig. 3D, the element attachment edge 4 becomes straight, and the rugged state of the tape main body 5 becomes conspicuous.

When the slider passes through the fastener stringer 8 thus manufactured and the slide fastener with the top and bottom stoppers is sewn to the to-be-sealed product 9, the sewing portion becomes rugged by sewing shrinkage in the usual case. In the slide fastener according to the present invention, since the tape main body 5 is in an uneven state, it is well suited to the to-be-enclosed product regardless of the contest of the to-be-enclosed product at the time of sewing; Since sewing is easily performed, the finished product 10 is also beautifully finished as shown in Fig. 3E. In particular, it is very suitable for flexible sealed products.

4 shows a modification of the fastener tape 1 obtained by weaving as in the above embodiment. In this modification, the structures of the cores 7a and 7b directly inserted into the element attachment edge 4 are the same as in the above embodiment, but two high recovery rates are disposed adjacent to the outside of the cores 7a and 7b. The slopes 6a and 6b having (R) are arranged side by side in the front and back direction of the tape surface, and in this embodiment, the two slopes having the fine fineness disposed on the outermost side of the element attachment edge 4. Consists of anomalous rectification, excluding (6o-1, 6o-2).

In addition, in this modified example, as the condensation polymer of n-propanediol and telephthalic acid having the same high-elongation recovery rate R as in the above embodiment, the slant 6a, 6b having the high recovery rate R of the element attachment edge 4 is high. The formed texture yarn is used, and the elongation recovery rate R is smaller than the inclinations 6a and 6b in the inclinations 6c, 6d, ..., 6m, 6n of the tape main body 5, as in the above embodiment. A texture yarn is used. In this regard, the elongation recovery (R) of the strand (Asahi Kasei Co., Ltd.) obtained from the condensation polymer of n-propanediol and telephthalic acid is 88%, and the elongation is 36% to 38%, compared with polyester or nylon 66. Very large.

Fig. 5 shows a modification different from the above embodiment. According to this modification, the element attachment edge 4 is made into a large rectangle, and one coarse core 7 is inserted into the diagonal portion; Slopes 6o, 6a, 6b made of three multifilaments made of coarse nylon having an elongation recovery rate R greater than the other slopes 6c, 6d, ..., 6m, 6n on the strand disposed on the outermost side of the large weave. Is placed. As for the materials of the other warp yarns 6c, 6d, ..., 6m, 6n, polyester is used as in the above embodiment.

In this modified example, as in the above embodiment, the fastener stringer 8 after the element 3 is attached becomes a regular packer in which the element attachment edge 4 is concave finely, and the product form after sewing can be finished beautifully. have. In this modified example, two to three slopes [6a, 6b, (6o)] in which the elongation recovery rate R is greater than each other inclination 6c, 6d, ..., 6m, 6n are obtained. Since it is arranged on the outside, the operation at the time of returning to the original length after stretching is less likely to be affected by the surrounding tissue, and the desired amount of recovery can be easily obtained, so that the fixed packer shape can be reliably obtained.

Fig. 6 shows a second embodiment of the present invention. The fastener tape 11 according to this embodiment is a warp knitted tape. The arrangement of the constituent strands shown in the figure is shown in a sparse state, but in reality is much more compact. The fastener tape 11 also has an element attachment edge 14 to which a plurality of elements 3 are attached at an equal pitch, and a tape main body 15 to be sewn into a to-be-sealed product, like the first embodiment described above. Equipped. In this embodiment, chain knitting yarns 16a, 16b, ..., 16m, 16n are arranged in the whole wale, and 0-0 / 3-3 of the needle loops of adjacent chain knitting yarns 16a, 16b, ..., 16m, 16n. Weft yarns 12a are inserted in sequence to arrange one core 17 between the chain knitting yarns 16a and 16b of the element attachment edge 14, and the weft yarns 12a and 3-3 / 0-0 The core 17 is integrally fixed to the element attachment edge 14 while the weft yarns 12b cross each other at the front and back.

Further, the front and rear weft yarns 12a are interposed between the chain knitting yarns 16a and the cores 17 disposed outwardly by sandwiching the core 17 in the two chain knitting yarns 16a and 16b disposed on the element attachment edge 14. , Multi-filament yarns 16p made of nylon are inclinedly inserted between the different recovery knitting yarns 16a, 16b,..., 16m, 16n, which are features of the present invention. . The nylon multifilament yarn 16p used in this embodiment has a total thickness of 470 dTex, and its elongation recovery rate (R) is 94%.

On the other hand, the core 17 is roughly skinned using a polyester multifilament yarn made of three raw yarns of 560 dTex thickness using a core 17a and a polyester multifilament yarn of 267 dTex thickness. It coat | covered with the back part and the elongation recovery rate R is 78.7%. Further, the chain knitting yarns 16a, 16b, ..., 16m, 16n and the weft yarns 12a, 12b are each made of a texture yarn made of 330dTex polyester multifilament, and the elongation recovery rate R is 75.6%.

In this embodiment, as described above, since the thickness of the chain knitting yarns 16a, 16b, ..., 16m, 16n and the weft yarns 12a, 12b is thin and consists of a knitting structure, the fastener tape 11 after knitting is flexible. This is very rich and goes well with the fabrics of Maryas and the fabrics of applause. In addition, since the above-described configuration is used, the fastener stringer (not shown) after attaching the element 3 as in the first embodiment has a regular packer shape in which the element attachment edge 14 is finely concave, and the tape is also used during sewing. The flexibility of the main body 15 is well suited to the product to be sealed, and at the same time, it is possible to sufficiently absorb the shrinkage generated during sewing, thereby producing a beautiful product.

Fig. 7 shows a modification of the second embodiment. In this modification, the nylon multifilament 16p for the second embodiment is excluded, and the core 17 is sandwiched in the two chain knitting yarns 16a and 16b disposed on the element attachment edge 14 to the outside. The chain knitting yarn 16a arrange | positioned at the inside also uses the nylon multifilament yarn with large elongation recovery rate. The physical properties at this time are also substantially the same as in the second embodiment. In this modification, since the strand length of the chain knitting yarn 16a disposed on the outermost side of the element attachment edge 14 is longer than twice as in the second embodiment, it is strongly tensioned at the time of attachment of the element 2. After being stretched and stretched, the amount of returning to the original length is also relatively large compared to other chain knitting yarns 16b, ..., 16m, 16n, and the square pack shape in which the element attachment edge 14 is concavely curved is much more markedly expressed. do.

Although the above has shown a typical embodiment of the present invention and modifications thereof, for example, the core constituting the element attachment edge and the constituent strand extending in a different direction from the constituent strand adjacent to the inner side of the core and the elongation recovery rate of the core ( R), the material of these constituent strands and cores, or these woven structures are not limited to the above embodiments, and various modifications can be made within the technical scope described in the claims of the present invention.

Claims (6)

In the tape fastener tapes 1 and 11 including the tape main body 5 obtained by weaving and knitting, and the element attachment edges 4 and 14 in which the cores 7a, 7b, and 17 are directly incorporated or incorporated, At least a part of the constituent strands 6o, 6a, 6b, 16a, and 16p extending in the radial direction adjacent to the outer side of the cores 7a, 7b, and 17 of the element attachment edges 4 and 14 are measured according to JIS L1096. The other whole structural strands 6c-6n, 6o-1, 6o-2, 16a-which are represented by the following formula (1) based on the strand length which are extended and arrange | positioned in the radial direction of the tape main-body parts 5 and 15 are arrange | positioned. 16n) and a strand having a fastener having a larger elongation recovery (R) than the cores (7a, 7b, 17). R = {(L1-L2) / (L1-L0)} × 100 ---------- (1) L0 is the original strand length. L1 is the strand length when tensioned under a given tension. L2 is the length of the strand after recovery under tension. The tape for slide fasteners according to claim 1, wherein the stretch recovery rate R of said strands (6o, 6a, 6b, 16a, 16p) having said large extension recovery rate (R) is 85% or more. 3. Structural strands 6o, 6a, 6b, 16a of the element attachment edges 4, 14, which are arranged in the radial direction adjacent to the outer side of the cores 7a, 7b, 17, 16p), the cores 7a, 7b, 17, and the elongation recovery rate R in the order of the other whole constituent strands 6c to 6n, 6o-1, 6o-2, 16a to 16n arranged to extend in the radial direction. The tape for slide fasteners characterized in that the set sequentially smaller. The constituent strand according to claim 2 or 3, wherein a thickness of the strands 6o, 6a, 6b, 16a, and 16p having a large elongation recovery rate R extends in the radial direction of the tape main body 5 (4). 6c-6n, 6o-1, 6o-2, 16a-16n) The tape for slide fasteners characterized by being set thicker than the single strand. The strands 6o, 6a, 6b, 16a, and 16p having a large elongation recovery rate R are made of nylon multifilament strands, and the other whole constituent strands 6c to radially extend. 6n, 6o-1, 6o-2, 16a-16n) The tape for slide fasteners characterized by the polyester multifilament strand. 4. The strand (6o, 6a, 6b, 16a, 16p) having a high elongation recovery rate (R) is a multifilament strand composed of a condensation polymer of n propanediol and telephthalic acid, and the other extending in the radial direction. The whole structural strands 6c-6n, 6o-1, 6o-2, 16a-16n are polyester multifilament strands, The tape for slide fasteners characterized by the above-mentioned.