KR970008150B1 - Knit slide fastener - Google Patents

Abstract

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Description

Knitted slide fasteners

1 is a point diagram showing a slide fastener woven by using a single needle bed according to one preferred embodiment of the present invention;

2 (A) -2 (C) show point diagrams showing the knitting patterns of the various yarns of FIG. 1;

3 is a schematic plan view illustrating a manner of attaching a series of continuous coiled coupling elements to a slide fastener;

4 is a perspective view showing the main part of the slide fastener shown in FIG. 3;

5 is a cross sectional view of FIG. 4;

6 is a point diagram illustrating a knit slide fastener according to a second embodiment of the present invention;

FIG. 7 is a point diagram of a laid-in weft in the knit structure of the slide fastener of FIG. 6;

8 is a point diagram illustrating a knit slide fastener according to a third embodiment of the present invention;

9 is a point diagram of a tricot stitch in the knit structure of the slide fastener of FIG. 8;

10 is a schematic plan view illustrating the manner of attaching a series of continuous coiled coupling elements to the slide fastener of FIG. 8;

11 is a cross sectional view of the slide fastener of FIG. 10;

12 is a schematic plan view showing the element-supporting portion of the slide fastener according to the fourth embodiment of the present invention;

13 is a cross-sectional view of the element-support of FIG. 12;

14 is a point diagram showing the element-supporting portion of the slide fastener according to the fourth embodiment of the present invention; And

FIG. 15 is a point diagram of two needle stitches in the knit structure of the slide fastener of FIG.

* Explanation of symbols for main parts of the drawings

1: Fastener tape 2: Element-supporting part

5: series of coupling elements 6, 7: legs

10: combined chain stitch 11: sinker loop

12, 17: needle loops 13: tricot stitch

16: chain stitch

The present invention relates to a knit slide fastener (zipper) having a series of continuous coupling elements woven into and along one longitudinal edge portion of the knit fastener tape when weaving the fastener tape.

For example, conventional knit slide fasteners disclosed in Japanese Patent Publication No. 38-11673 include fastener tapes woven with chain stitches and laid-in wefts and having longitudinal edge portions, wherein One continuous coupling element formed from nylon monofilament is woven into and along the longitudinal edge portion. The nylon monofilament is laid across the longitudinal tape edges and formed into a series of coupling elements that are woven continuously in the chain stitch when the fastener tape is woven. Another known knit slide fastener disclosed in US Pat. No. 5,035,125 is a series of continuous formed from plastic monofilaments laid on and along one longitudinal edge of fastener tape and fastener tape woven with chain stitch and laid-in weft. A coupling element. At the longitudinal tape edge portion, the laid-in wefts pass along two adjacent wales and press down on the upper legs of the coupling elements, and also along the neighboring wales and underneath the coupling elements. It is intertwined with a chain stitch that pushes the leg down.

The conventional knitted slide fasteners described previously are placed in one longitudinal edge portion of the woven fastener tapes and fastener tapes and chain-in and weft-in wefts and a series of continuous coupling elements woven into and along the longitudinal tape edge portions. It is a type containing plastic monofilament forming. In the first-mentioned knit slide fasteners, a series of coupling elements are fastened by sinker loops of the chain stitch provided to form the basis of the fastener tape. Since the chain stitch is stretchable in the longitudinal direction, the series of coupling elements thus attached are unstable in dimensions and susceptible to deformation when the chain stitch is stretched. This deformed series of coupling elements can no longer ensure smooth engagement of the coupling elements with the contrast rows. In the second-mentioned knitted slide fastener, the needle loops of the chain stitch are only intertwined with a laid-in weft extending across the longitudinal tape edge, and the chain stitch pressing down the legs of the coupling element It forms part of the basic structure. The chain stitch thus arranged is also easily stretchable in the longitudinal direction, and thus it is not certain that the coupling element has sufficient dimensional stability.

Therefore, it is difficult to achieve a smooth engagement connection between opposing rows of coupling elements.

In view of the above-mentioned drawbacks of the prior art, the object of the present invention is to be firmly fixed to one longitudinal edge portion of a knitted fastener tape with sufficient dimensional stability and to ensure a smooth interlocking connection between two rows of coupling elements. It is to provide a knit slide fastener having a series of continuous coupling elements.

In order to achieve the above object, the present invention is directed to the element-support and to the element-support of one longitudinal edge portion of the fastener tape when the fastener tape and the fastener tape woven into the basic structure including the chain stitch are woven. Provided are knit slide fasteners of the type having a woven series of continuous coupling elements. Improvements of the knit slide fasteners consist of: a sinker loop arranged to be woven into the longitudinal edges of the warp fastener tape to secure the series of coupling elements and to direct the legs of the coupling elements toward the longitudinal tape edges. Needle loops joined with the needle loops of the combined chain stitch and the chain stitch of the basic structure.

Preferably, the knitted slide fastener further comprises a tricot stitch which forms part of the basic structure. The sinker loops of the tricot stitch are arranged so that the legs of the coupling elements face the longitudinal tape edges together with the sinker loops of the joining chain stitch, and the needle loops of the tricot stitch are the needle loops of the chain stitch of the basic structure. Coupling with, fix the coupling element to the tape edge when the slide fastener is woven. Preferably, at least the joining chain stitch is composed of heat-shrinkable yarns having a thicker thickness than the yarns making up the basic structure.

In the element-supporting portion of one longitudinal tape edge part, a series of coupling elements is connected to the base structure of the fastener tape, without using a stitch that forms at least a portion of the base structure, but with a joining chain stitch provided for this purpose only. Attach. By arranging the chain stitches, the sinker loops of the joining chain stitches point the coupling elements to the legs, and the needle loops of the joining chain stitches merge with the needle loops of the chain stitches of the base structure. A series of coupling elements are woven at the element-supports of the longitudinal tape edges and secured in place by the stitched joining chain when the fastener tape including the joining chain stitch is woven.

With this structure, the basic structure of the fastener tape can maintain the shape and strength even in the one longitudinal edge portion provided for attachment of a series of coupling elements. In addition, since the needle loops of the joining chain stitches merge with the needle loops of the chain stitches of the basic structure, the legs of the coupling elements are pressed strongly toward the surface of the fastener tape through the sinker loops of the joining chain stitches. Arrange the joining chain stitches to surround the individual coupling elements from above and press them towards the longitudinal tape edge portions, as a result of which the series of coupling elements are firmly fixed with high dimensional stability to the longitudinal tape edge portions, thus A secure engagement of the coupling element with the contrast row and subsequent smooth sliding motion of the slider can be ensured.

These and other objects, features and advantages of the present invention will become apparent to those skilled in the art upon reference to the accompanying drawings, in which the following detailed description and the preferred structural embodiments embodying the principles of the invention are shown using illustrative examples.

Certain preferred embodiments of the invention are described below in more detail with reference to the accompanying drawings. Referring now to FIG. 1, this shows a point diagram of a knit slide fastener according to the first embodiment of the invention.

Knit slide fasteners (hereinafter referred to as "fasteners") are woven on a conventional warp-knit machine with a single knit bed. The fastener is a tricot stitch 13 (1-0 / 0-1 (figure 2)) having a pattern of (1-0 / 1-1 / 1-2 / 1-1 (figure 2 (B)) With warp yarns having a basic structure woven with laid-in wefts 18 placed on all courses across the width of the chain stitch 16 and the fastener tape 1 having a pattern of zigzag or serpentine patterns. Woven fastener tape 1. The fastener tape 1 extends along one longitudinal edge portion of the fastener tape 1 and is attached to a series of continuous helical coiled coupling elements 5; 2) three adjacent wales 3 forming 2. To form a series of coupling elements 5, a monofilament of synthetic resin is passed across the element-support 2 of the fastener tape 1 One round trip to all other courses 4. The series of coupling elements 5 is a chain stitch woven in a pattern of 0-0 / 0-1 / 1-1 / 1-0 (figure 2 (A)). 10), Passing along the second and third outermost wales 3, from above it surrounds each pair of legs 6, 7 of the coupling element 5, thus directing them downwards towards the surface of the element-support 2. By pressing, it is fixed to the element-support 2.

The series of continuous spiral coiled coupling elements 5 attached to the element-support 2 of the fastener tape 1 is formed from a monofilament of synthetic resin, for example nylon or polyester. The monofilament is a longitudinal series of one previously formed above by stamping in preparation for a subsequent method of forming the coupling head 8 and the connecting portion 9 (both shown in FIG. 4) of the coupling element 5. It has a flattened part spaced apart. The monofilament with the flattened part reciprocates it in all other courses 4 of the fastener tape 1 across the element-support 2. The inset monofilament is bent at each flattened portion and subsequently formed into a series of continuous spiral coiled coupling elements 5, each of which is common from the coupling head 8, the coupling head 8. Upper leg 6 of one coupling element 5, as shown in FIG. 4, with a pair of legs 6, 7 extending in the direction and a connection 9 away from the coupling head 8. And the lower legs 7 of adjacent coupling elements 5. A series of coupling elements 5 is fastened to the fastener tape 1 using a joining chain stitch 10 which is provided only for this coupling purpose and differs in structure from the chain stitch 16 of the basic structure.

As shown in FIG. 4, the engagement chain stitch 10 extends along two adjacent wales 3 (the second and third outermost wales of the element-support 2). The joining chain stitch 10 is arranged so that the legs 6 and 7 of each pair of coupling elements 5 are arranged so that the sinker loops 11 and the base structure are arranged downwards towards the base structure of the fastener tape 1. Has a needle loop 12 joined together with the needle loop 17 of the chain stitch 16. The element-support 2, together with the weave chain stitches arranged in this way, has a knit structure which is compact and in fact made longitudinally non-stretchable. The series of coupling elements 5 attached to the element-support 2 is quite resistant to changes or deformations in dimensions. In the illustrative embodiment, the leg 6,7 of each pair of tricot stitch 13 and coupling element 5, which partially forms the basic structure of the element-support 2, is directed toward the basic structure. And sinker loops 14 interdigitated with the needle loops 17 of the chain stitch 16.

The thickness or diameter and the heat-shrinkability of each of the threads constituting the joining chain stitch 10 of the element-support 2 and the threads constituting the tricot stitch 13 are more than those of the yarns used to construct the basic structure. Big. When used in the heat-settling manner achieved after the product-length slide fasteners have been produced, the thick, heat-shrinkable yarn shrinks due to heat, thereby densifying a series of coupling elements 5 more tightly with respect to the element-support 2. Has a tendency to stick. Therefore, the series of coupling elements 5 can be strongly fixed on the fastener tape 1 with increased dimensional stability. Partially stamped monofilaments used in the embodiments described above for forming a series of continuous spiral coiled coupling elements 5 may be rectangular or elliptical in cross section, for example, where the stamping method required in the embodiments may not be required. It can be replaced with an excitation monofilament, which can easily be placed into the element-support 2 and subsequently formed into a series of coupling elements 5.

The modified fastener shown in FIG. 6 replaces the laid-in weft 18 with that shown in FIG. 1 by using a plurality of laid-in wefts 19 forming part of the basic structure of the fastener tape. Are distinguished. The laid-in weft 19 has a different thickness and pattern than that of the laid-in weft 18. More specifically, the laid-in weft yarns 19 are laid out in a pattern of 0-0 / 4-4, each extending across four adjacent yarns of the wale 3 as shown in FIG. The laid-in weft 19 is thinner than the laid-in weft 18 of the first embodiment. By using a thin laid-in weft 19, it is possible to lower the load on the knitting needles applied when weaving and forming the basic structure. In addition, the basic structure is not excessively thick and has a relatively knitting density, as a result of which the fastener tape 1 is manufactured with a fairly stable shape and arrangement.

Other modified fasteners shown in FIGS. 8-11 are used except that the tricot stitch 20 used in place of the tricot stitch 13 in FIG. 1 is used only to form a part of the basic structure with a different pattern. Is actually the same as the slide fastener shown in FIG. Tricot stitch 20 has a pattern of 1-0 / 1-2 (FIG. 9) and is woven into chain stitch 16 and laid-in weft 18, together forming the basic structure of the fastener tape. . As clearly shown in FIGS. 10 and 11, the sinker loops 21 of the tricot stitches 20 extending in the element-support 2 are adapted to the pair of legs 6, 7 of the coupling element 5. It does not have the function of fastening and is woven alone as part of the basic structure of the fastener tape. The series of coupling elements 5 is fixed using the sinker loop 11 of the joining chain stitch 10. In the embodiment shown in FIG. 1, the sinker loops 14 of the tricot stitch 13 are arranged, rather than fastening the coupling element 5 to the element-support 2 of the fastener tape 1. The basic structure of the fastener tape 1 can be formed. In the case of fastening the series of coupling elements 5 using only the joining chain stitch 10, the thread consisting of the joining chain stitch 10 is preferably larger in thickness and heat-running than any other knitting thread. It has contractility. By using the thick, significantly heat-shrinkable thread of the joining chain stitch 10, the coupling element 5 can be tightly fastened, with improved dimensional stability.

12 and 13 show a modified fastener which comprises a core cord 22 disposed between the upper and lower legs 6, 7 and extends along a series of continuous spiral coiled coupling elements 5. The series of coupling elements 5 is in the same manner as in the embodiment shown in FIG. 1 by the sinker loops 11 of the joining chain stitch 10 and the sinker loops 14 of the tricot stitch 13. It is fixed to the fastener tape. The core cord 22 inserted through the series of coupling elements 5 can be used in the embodiment shown in FIG.

The modified fastener shown in FIG. 14 is distinguished from the embodiment of FIG. 8 by using two needle stitches 23 instead of the tricot stitch 20. The two needle stitches 23 have a pattern of 0-2 / 2-0, as shown in FIG. In this embodiment a series of coupling elements 5 is fastened to the fastener tape using only the sinker loop 11 of the joining chain stitch 10.

As described above, the knitted slide fasteners of the present invention are a series of continuous spiral coil types woven into one longitudinal edge portion (element-support) 2 of the warp-woven fastener tape 1 when the fastener tape is woven. Woven from the basic structure of the coupling element 5 and the fastener tape and arranged longitudinally separately from the element-support 2, a series of coupling elements 5 is firmly fastened to the element-support 2. Stitch 10, which is an assembly having sufficient dimensional stability. In the illustrative embodiment, the engagement chain stitch 10 consists of two threads passing along adjacent wales of the element-support 2. Three threads woven as a joining chain stitch can be used depending on the size of the coupling element used. The width of the longitudinal tape edge portion (element-support) 2 varies in the number of threads used to form the joining chain stitch, but in general the width is equal to the overall width of the fastener tape 2 or three adjacent wales. The outermost wale may or may not be used for the purpose of securing the coupling element 5. Since the outermost wale tends to be dense, it is preferable that thicker knitting yarns be used to form at least the outermost wale.

In each of the third, fourth, tenth and twelve degrees it is stated that the various yarns are explained to be woven with the same thin thickness to form a loose knit structure. The above is for illustrative purposes only. In practical use, various yarns of different thicknesses are suitably combined in view of the various functional requirements described for the desired fasteners. Moreover, the yarns are woven together to form a fine or dense knit structure.

As is apparent from the above description, the knitted slide fastener of the present invention is different from the chain stitch 16 forming the basic structure of the fastener tapes 1 woven with warp, and the series of coupling elements 5 is fastened to the fastener tape 1. Engaging chain stitch 10 which is used to fasten to the element-support 2 which consists of the longitudinal edge portion of the. The joining chain stitch 10 is arranged so as to surround the pair of legs 6, 7 of the coupling element 5 from above, thereby pressing the sinker loops 11 pressed against the surface of the fastener tape 1. It has a needle loop 12 that is joined to the needle loop 17 of the chain stitch 16 of the basic structure. In the above production, the element-supporting portion 2 has a fine or dense knit structure and a structure which is in fact not longitudinally extensible. The series of coupling elements 5 attached to the element-support 2 is fairly stable at the proper position, resistant to deformation, and consequently the slide fastener can always perform the essential function with high reliability. .

Apparently, various minor changes and modifications of the present invention are possible to clarify the above. It is, therefore, to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.

Claims (3)

Fastener woven with a warp consisting of a basic structure comprising chain stitch 16 and element-supporting portion 2 of one longitudinal edge portion of the fastener tape 1 when the fastener tape 1 is woven. In a knitted slide fastener equipped with a series of coupling elements 5 woven along a furnace and element support, the series of coupling elements 5 is woven into the longitudinal edge portion of the warp fastener tape 1. ) And said basic chain stitch 10 with a sinker loop 11 which is arranged to press the pair of legs 6, 7 of the coupling element 5 toward the longitudinal tape edge portion. A knitted slide fastener provided with a needle loop 12 which is mutually joined with a needle loop 17 of a chain stitch 16 having a structure. The sinker loop (11) of claim 1, further comprising a part of the basic structure and arranged to connect the legs (6, 7) of the coupling element (5) to the coupling chain stitch (10). And a needle slide comprising a tricot stitch 13 pressed against the longitudinal tape edge portion and a needle loop 15 mutually joined with the needle loop 17 of the chain stitch 16 of the basic structure. Fasteners. 3. The knit slide fastener according to claim 2, wherein at least said joining chain stitch (10) is composed of a heat-shrinkable thread having a thickness thicker than a thread constituting the basic structure.