JP2019217411A - Slide fastener - Google Patents

Abstract

To provide a slide fastener which has a tape member having a core cord part formed from an arbitrary material, and capable of preventing or inhibiting a fixed cord member from moving in a tape length direction.SOLUTION: In a slide fastener (1), tape members (20, 30, 40, 50, 60) have a tape body (23), and core cord parts (24, 24a, 24b, 54a, 54b, 64) arranged along the lengthwise direction of tape side marginal parts (22, 32, 42, 62) of the tape body (23). The core cord parts (24, 24a, 24b, 54a, 54b, 64) are formed due to that cord members (25, 25a, 25b) are fastened to the tape side marginal parts (22, 32, 42, 62) along the tape length direction by sewing with a sewing machine. The cord members (25, 25a, 25b) are linearly fastened due to that needle threads (26, 56, 66) of sewing with a sewing machine are not pierced, and at least one thread used for sewing with a sewing machine crosses while coming in contact with outer peripheral surfaces of the cord members (25, 25a, 25b).SELECTED DRAWING: Figure 9

Description

  The present invention relates to a slide fastener having a tape member provided with a core string portion bulging from the tape body in the front and back directions at a tape side edge of the tape body.

  The slide fastener has a pair of left and right fastener stringers in each of which an element row including a plurality of fastener elements is formed at a tape side edge of a narrow fastener tape, and a slider attached to the element row. In such a slide fastener, by sliding the slider along the element row, the left and right fastener elements can be engaged and separated, and the slide fastener can be opened and closed.

  Further, for example, a fastener stringer obtained by injection-molding a synthetic resin fastener element on a fastener tape or a fastener stringer obtained by plastically deforming and fixing a metal fastener element to a fastener tape, generally, In order to increase the attachment strength of the fastener element to the fastener tape, a core string portion swelling in the tape front and back direction is formed at the tape side edge of the fastener tape.

  As an example of the fastener tape having such a core string portion, FIG. 3 of WO 2013/057807 (Patent Document 1) illustrates a fastener tape to which a metal fastener element is attached. The fastener tape of Patent Document 1 is woven using a weft made of a synthetic fiber such as a polyester fiber and a plurality of warps.

  Further, the fastener tape of Patent Document 1 has a tape main portion sewn to a fastener-attached product such as clothing or bags, and extends in one side edge of the tape main portion in the tape width direction, and a plurality of fastener elements are attached. The tape side edge portion (also referred to as an element attachment portion) is provided, and a core string portion swelling in the front and back direction of the tape is provided on the opposite side edge of the tape side edge portion facing the other fastener tape. ing.

  In Patent Literature 1, the core string portion of the fastener tape is formed by forming a woven fabric on the opposite side edge of the fastener tape and holding and fixing a string member called a core string in the woven fabric. . That is, the core cord portion of Patent Document 1 supplies a cord member together with a warp at the time of weaving a fastener tape, and forms a woven fabric using a weft and a warp so as to include the cord member. It is provided integrally with the tape.

  Further, for example, US Pat. No. 1,817,837 (Patent Document 2) describes a fastener tape in which a core string portion is formed by sewing a string member to a tape side edge portion by sewing. . In one fastener tape of the embodiments described in Patent Literature 2, the tape side edge is wound around the string member so as to wrap the string member inward, and further, the tape member is wound around the string member. Sewing is performed with the tape side edge wound, and a sewing thread forming a stitch line penetrates the string member and the tape side edge wound around the string member, and the string member sewn to the tape side edge. By being attached, a core string is formed along the tape length direction at the tape side edge of the fastener tape.

  Further, in the fastener tape according to another embodiment described in Patent Document 2, a sewing thread forming a stitch line pierces a bare string member and a tape side edge portion of the fastener tape, and the string member is taped. A core string is formed on the side edge of the tape by being sewn to the side edge along the tape length direction.

  In the fastener tapes according to the above two embodiments described in Patent Document 2, the sewing thread forming the stitch line penetrates the string member and the tape side edge, so that the string member becomes the tape side edge. Are fixed along the length direction to form a core string portion.

  In addition, in Patent Document 2, the string member is disposed along the tape length direction at the tape side edge, and the string member is covered so as to be wrapped inside by the tape side edge, and further, the string member is covered. There is also described a fastener tape in which a core string portion is formed by overlapping and sewing together tape portions adjacent to the inside and outside of the tape covering portion. The core string portion of this type of fastener tape is formed by holding a state in which the string member is wrapped around the tape side edge by a stitch line of the sewing thread without penetrating the string member.

International Publication No. WO 2013/057807 U.S. Pat. No. 1,817,837

  BACKGROUND ART Conventionally, fabrics used for clothes, bags, and the like have been formed using various synthetic fibers or natural fibers according to applications and the like. In recent years, fibers and fabrics having various functions such as waterproof, moisture-permeable, water-absorbing (absorbing) / quick-drying, heat-storing, and antifouling properties have been developed, and have been used for fabrics of clothes and bags. I have. Furthermore, clothing and bags may be manufactured using various materials such as animal natural leather and synthetic leather in addition to the above-described fabrics.

  On the other hand, when a slide fastener is attached to clothes or bags, the fastener tape used for the slide fastener is usually formed using synthetic fibers such as polyester fibers.For example, the fastener tape is made of a material other than synthetic fibers. The use of the fastener tape or the function of imparting a function such as waterproof and moisture permeability to the fastener tape itself is hardly implemented because of its low cost effectiveness. For this reason, at present, the types of fastener tapes are limited as compared with the types of fabrics and materials used for clothing and bags.

  In particular, when manufacturing a fastener tape having a core string portion, as described in Patent Literature 1, at the time of weaving the fastener tape, while forming a bag weave structure on the opposite side edge of the fastener tape, It is common to hold and fix a cord member to the zipper tape, so that a material other than a fabric is rarely used for a fastener tape having a core cord portion. Further, when a function such as waterproof and moisture permeability is newly added to the fastener tape woven as described above, for example, a cloth having a desired function is purchased, and a string member is sewn to the cloth, and a core string portion is formed. There is a problem that the manufacturing cost is significantly increased as compared with the case of forming the.

  On the other hand, for example, an arbitrary material such as cloth or leather having a desired function such as waterproof and moisture-permeable is prepared, and as described in Patent Document 2, for example, a string member is attached to a tape side edge of the prepared material. By forming a stitch line so that a sewing thread (needle thread) penetrates the string member, a core string is provided at a tape side edge of a desired material to form a fastener tape. It is also possible.

  However, when the core string portion is actually formed as described in Patent Literature 2, it is necessary to sew the string member on the side edge of the tape while piercing the string member with a sewing needle. Since it is thin and easy to move at the time of sewing, the position of the string member is easily shifted when the sewing needle is pierced. For this reason, it is difficult to accurately pierce the thin string member at a predetermined position with a sewing machine needle, and the piercing of the sewing machine needle causes the thin string member to reach a predetermined position on the side edge of the tape over the entire length. There is a problem that a high technical skill is required to stably fix it.

  Further, as described above, Patent Literature 2 discloses that a sewing thread is attached to a cord member by sewing an inner adjacent portion and an outer adjacent portion of the tape covering portion with the tape side edge portion wrapping the cord member inside. There is also described a fastener tape in which a core string portion is formed without penetrating through. By using such a form, it is also possible to form a fastener tape by providing a core string portion on a material such as cloth having a desired function.

  However, in this case, although the string member is wrapped in the tape covering portion on the side edge of the tape, since the string member is not fixed in the tape covering portion, there is a possibility that the string member moves in the tape length direction in the tape covering portion. Was. For this reason, when attaching the fastener element by, for example, injection molding a synthetic resin material to the tape side edge having the core string portion of the cloth or the material, the posture of the fastener element is inclined, or the position of the fastener element is determined by the tape length. In addition, there has been a problem that problems such as displacement in the vertical direction and leakage of molten metal during injection molding are likely to occur.

  The present invention has been made in view of the above-mentioned conventional problems, and a specific object of the present invention is to allow a string member to perform a predetermined process on a given material without causing a sewing thread to penetrate the string member by sewing. A core fastener is formed by being stitched stably at a position, and a slide fastener having a tape member capable of preventing or suppressing the fixed string member from moving in the tape length direction. To provide.

  In order to achieve the above object, a slide fastener provided by the present invention is a slide fastener having a pair of left and right fastener stringers in which a plurality of fastener elements are attached to a tape member, wherein the tape member has flexibility. A tape body provided, and a core string portion arranged along a length direction at a tape side edge portion of the tape body and swelling from the tape body in a front-to-back direction. The string member is formed by being fixed to the side edge of the tape along the tape length direction by sewing, and the string member is at least one piece used for the sewing without the needle thread of the sewing being pierced. The two threads intersect while contacting the outer peripheral surface of the string member opposite to the inner peripheral surface that is in contact with the tape body, thereby being fixed linearly to the tape side edge. The main feature of the fastener element is that the fastener element is attached to the tape member so as to cover a part of the core string portion and a part of at least one of the threads used for the sewing. It is.

  In such a slide fastener according to the present invention, it is preferable that the string member is fixed only by the needle thread and is formed thicker than the needle thread. In this case, the tape side edge is disposed opposite to the first tape surface on which the needle thread runs and the first tape surface, and the needle thread pierces the tape side edge to form a loop. The tape member is fixed to the second tape surface of the tape side edge by the needle thread intersecting the outer peripheral surface of the string member twice in each stitch. Is preferred.

  Further, in the slide fastener according to the present invention, the string member is fixed by a stitch of a lockstitch formed by being bent in a zigzag shape with respect to a tape length direction using the needle thread and the bobbin thread, The tape side edge has a first tape surface on which the needle thread runs, and a second tape surface on which the bobbin thread runs, which is arranged opposite to the first tape surface, and the cord member includes: The needle thread or the bobbin thread is inserted between the needle thread and the first tape face, or between the bobbin thread and the second tape face, and the outer peripheral face of the string member is zigzag-shaped. May be fixed to the tape side edge.

  Further, in the slide fastener according to the present invention, the string member is fixed by an overlock stitch formed by using the needle thread and one or two looper threads, and the tape side edge portion is the tape side edge portion. A first tape surface on which a needle thread runs, and a second tape surface arranged opposite to the first tape surface, the needle thread penetrating the side edge of the tape to form a loop, and the string member Is inserted between the looper thread and the first or second tape surface, and is fixed to the tape side edge by the looper thread intersecting the outer peripheral surface of the string member at each stitch. It may be.

  In the slide fastener of the present invention, the string member has a first string member and a second string member arranged in parallel to one tape surface in the tape side edge, and the tape side edge is A first tape fixing portion to which the first string member is fixed, and a second tape fixing portion to which the second string member is fixed, wherein the second tape fixing portion is attached to the first tape fixing portion. On the other hand, it is preferable that the first tape fixing portion is folded back on the other tape surface.

  Particularly, in this case, the first tape fixing portion and the folded-back second tape fixing portion are formed along the first and second string members at a position inside the tape from the first and second string members. It is preferable that the pieces are sewn to each other by a tape sewing line.

  Further, in the slide fastener of the present invention, the tape side edge portion is a tape fixing portion for fixing the string member to one tape surface, and the tape fixing portion is folded back to the other tape surface of the tape fixing portion with respect to the tape fixing portion. The tape fold is formed by performing the sewing operation to fix the string member in a state where the tape fold is folded on the tape fixing portion and overlapped with each other. It may be sewn together with the member to the tape fixing portion.

  Further, in the slide fastener of the present invention, the tape side edge portion, when viewed in a cross section orthogonal to the length direction of the tape member, a tape covering portion that wraps and covers the cord member inside, the tape A first adjacent portion disposed adjacent to one of the covering portions; and a second adjacent portion disposed adjacent to the other of the tape covering portions, wherein the string member is wrapped by the tape covering portion. In this state, the first adjacent portion and the second adjacent portion may be sewn to each other by a tape sewing line formed along the string member.

  The tape member of the slide fastener according to the present invention includes a tape body having flexibility and a core formed by fixing a string member to a tape side edge of the tape body along a tape length direction by sewing. And a string portion. Further, the string member of the core string portion is linearly fixed to the tape side edge portion by at least one thread used for the sewing machine intersects while contacting the outer peripheral surface of the string member.

  According to the slide fastener of the present invention thus configured, the string member is fixed to the tape side edge of the tape body so as to be held by a sewing thread such as a needle thread used for sewing. That is, in the tape member of the present invention, any material such as cloth having a desired function can be used for the tape body, and a string member is attached to the tape side edge of the tape body. Since the sewing thread used for sewing on the member can be sewn over the entire length of the tape without penetrating, the core string can be easily and stably placed at a predetermined position of any material. It can be formed.

In addition, since at least one sewing thread intersects with the string member fixed to the tape side edge while in contact with the outer peripheral surface of the string member, the string member is stably fixed to the tape side edge. At the same time, it is possible to effectively prevent or suppress the movement of the string member in the tape length direction or the tape width direction, thereby preventing the core string portion from being displaced and the core string portion from being deformed.
Since the slide fastener provided by the present invention is formed by using a pair of left and right fastener stringers in which a plurality of fastener elements are attached to a tape member having the above-described structure, the slideability and the lateral pulling are provided. A high-quality slide fastener that has the proper performance of slide fasteners, such as strength, in a proper and stable manner, and has the added value of the tape member of the tape member having desired functions such as waterproof and moisture-permeable properties. It becomes.

  In such a slide fastener of the present invention, a string member thicker than the needle thread is fixed to the tape side edge only by the needle thread. In this way, the thick string member is fixed by the intersection of the needle thread penetrating the side edge of the tape, so that the core string portion can be linearly stabilized on the tape member without the needle thread penetrating the core string portion. Can be formed.

  In particular, in this case, the tape side edge of the tape body is arranged opposite to the first tape surface on which the needle thread runs, and the second side where the needle thread penetrates the tape side edge to form a loop. And a tape surface. The string member is used as a looper thread for double chain stitching at the time of sewing by the sewing machine, and is extended linearly by intermittently applying tension to each stitch of the sewing machine. The string member is fixed to the second tape surface at the tape side edge by the needle thread intersecting the outer peripheral surface of the string member twice in each stitch.

  As described above, the looper thread for double chain stitching is straightened to form a string member, and the string member is formed by looping and fixing the string member with a needle thread and another thread, thereby forming a string member. Can be firmly and stably fixed to the tape side edge linearly. Further, since there is no need to separately prepare and guide a string member and a sewing thread when performing sewing, a core string portion can be easily and efficiently formed on an arbitrary material only by sewing.

  Further, in this case, the string member is fixed using the double chain stitch sewing machine in which the sewing needle and the looper perform the double chain stitching operation, so that the looper thread (string member) is continuously formed due to the structure of the sewing machine. Since it is possible to supply a longer length of the string member, it is possible to continuously fix the string member by sewing in a long distance in the tape length direction as compared with the case of forming a stitch for lock stitch, for example, where the bobbin thread needs to be replaced. Can be done

  Further, in the slide fastener of the present invention, the string member may be fixed by a stitch of a lockstitch formed by bending in a zigzag shape with respect to the tape length direction using the needle thread and the bobbin thread. good. In this case, the tape side edge of the tape body has a first tape surface on which the needle thread runs, and a second tape surface arranged opposite to the first tape surface and on which the bobbin thread runs. In addition, the string member is inserted between the needle thread and the first tape surface of the tape side edge, or between the bobbin thread and the second tape surface of the tape side edge, and the needle thread or the bobbin thread is inserted. The string member is fixed to the tape side edge by crossing the outer peripheral surface in a zigzag manner.

  In this way, the string member is fixed using the zigzag lockstitch stitch, so that the string member arranged in a straight line can be stitched for each stitch of the sewing machine without the needle thread penetrating the core string portion. Since the string member is tightened by the thread or the bobbin thread, the string member can be firmly and stably fixed to the tape side edge. Thereby, the core string portion can be easily formed on any material.

  Furthermore, in the slide fastener of the present invention, the string member may be fixed by an overlock stitch formed using a needle thread and one or two looper threads. In this case, the tape side edge of the tape body is arranged opposite to the first tape surface on which the needle thread runs, and the needle thread penetrates the tape side edge to form a loop and the looper thread. And a second tape surface for performing other yarn looping. In addition, the string member is inserted between the looper thread and the first or second tape surface of the tape side edge, and the looper thread crosses the outer peripheral surface of the string member at a constant interval in each stitch. , And is fixed to the side edge of the tape.

  Even when the string member is fixed using the overlock stitch as described above, the string member is securely and linearly fixed to the side edge of the tape even if the needle thread does not penetrate the core string portion. Therefore, the core string portion can be easily formed on any material.

  In the slide fastener of the present invention as described above, the string member includes a first string member and a second string member which are arranged in parallel at a predetermined interval on one tape surface at the tape side edge. The tape side edge has a first tape fixing portion to which the first string member is fixed, and a second tape fixing portion to which the second string member is fixed. Also, the second tape fixing portion on the tape side edge is folded back to the first tape fixing portion on the other tape surface of the first tape fixing portion.

  Thereby, the core string portion can be easily formed on the front and back surfaces (that is, the front and rear outer surfaces) exposed in the front and back directions at the tape side edge of the tape member. In this case, for example, even if the front end (side edge) in the tape width direction at the tape side edge of the tape body is in an unprocessed state while being cut, the side edge is not exposed to the outside. The second tape fixing portion is folded back.

  For this reason, when the slide fastener is formed, the tape side edges (that is, the bent ends) of the left and right tape members facing each other can be seen clearly, so that the appearance quality of the slide fastener is improved, and the tape side of the left and right tape members is improved. Inconveniences such as fraying of the yarn at the edges are less likely to occur, and the quality and performance of the slide fastener can be stably maintained over a long period of time.

  Further, in this case, the first tape fixing portion at the tape side edge portion and the folded second tape fixing portion are located inside the first and second cord members in the tape width direction with the first and second cords. They are sewn together by tape sewing lines formed along the members. Thereby, the state where the second tape fixing portion is folded back is stably maintained, so that the side edge of the tape body can be effectively prevented from being exposed to the outside, and the fastener element to be performed later is not required. Installation work can be performed stably.

  Further, in the slide fastener of the present invention, the tape side edge of the tape body has a tape fixing portion for fixing the string member on one tape surface, and the tape fixing portion has a tape fixing portion on the other tape surface of the tape fixing portion. A tape folded portion is folded back to the tape fixing portion, and the sewing machine sewing is performed to fix the string member in a state of being overlapped with the tape folded portion, so that the tape folded portion is taped together with the string member. It may be stitched to the fixed part.

  Thereby, the core string portion can be easily formed at the tape side edge of the tape member. Further, for example, even if the leading end (side edge) in the tape width direction at the tape side edge of the tape body is in an unprocessed state while being cut, the tape folded portion may be folded back to the tape fixing portion. When sewn together with the string member, when the slide fastener is formed, the mutually opposing tape side edges (that is, the bent ends) of the left and right tape members can be seen clearly, and the tape side edges of the left and right tape members can be seen. Problems such as fraying of the yarn can be prevented from occurring.

  Furthermore, in the slide fastener of the present invention, when the tape side edge of the tape body is viewed in a cross section orthogonal to the length direction of the tape member, a tape covering portion that wraps and covers the cord member inside, A first adjacent portion disposed adjacent to one of the covering portions and a second adjacent portion disposed adjacent to the other of the tape covering portions, and the string member is wrapped by the tape covering portion; The first adjacent portion and the second adjacent portion may be sewn to each other by a tape sewing line formed at a position along the inside in the tape width direction with respect to the string member.

  Thereby, the core string portion can be easily formed at the tape side edge portion of the tape member, and since the string member is covered and protected by the tape covering portion, the string member is frayed even when the string member receives an external force. That is, the string member can be prevented from being cut. Further, for example, even if the front end (side edge) in the tape width direction at the tape side edge of the tape body is in an unprocessed state while being cut, the side edge is directed to the inside of the tape body. The first adjacent portion and the second adjacent portion are sewn, so that when the slide fastener is formed, the mutually opposing tape side edges of the left and right tape members can be seen clearly, and the tape side edges of the left and right tape members can be seen. Inconveniences such as fraying of the yarn can be made less likely to occur in the portion.

  Next, in the method of manufacturing a tape member for a slide fastener provided by the present invention, a string member is fixed to a tape side edge of a flexible tape body along a tape length direction using a sewing machine. By this, when manufacturing a tape member having a core string portion swelling in the front and back direction from the tape body, for example, a thread thinner than the string member is used as a needle thread, and the string member is used for double chain stitching. Used as a looper thread.

  In addition, the sewing needle of the sewing machine and the looper perform double chain stitching, thereby piercing the needle thread to the side edge of the tape and looping the loop of the needle thread and the loop of the string member with each other. Let it. Further, when performing such a double chain stitching operation, tension is intermittently applied to the string member for each stitch of the sewing machine, and the string member is extended linearly, and at the same time, the string member is looped by the needle thread. Secure to the side edge of the tape.

  More specifically, in the present invention, when performing the operation of the double chain stitch, the tension is intermittently applied to the string member that is bent in the double chain stitch manner, thereby providing the string member. Is extended linearly, and the shape of the loop of the needle thread intersecting with the string member is deformed. As a result, in the present invention, since each loop formed of the needle thread can be crossed twice on the outer peripheral surface of the cord member that is linearly extended, the cord can be inserted without penetrating the cord member. The member can be fixed firmly and stably to the tape side edge of the tape body.

  This makes it possible to easily and efficiently form the core cord portion that swells in the front and back directions at the tape side edge of the tape body, so that the above-described tape member according to the present invention can be stably manufactured. Can be. Further, since the sewing needle and the looper of the sewing machine perform double chain stitching to fix the string member, compared with the case of forming a stitch of the lockstitch which requires replacement of the bobbin thread, for example, the sewing of the sewing machine can be performed. Can be continuously performed over a long distance in the tape length direction.

It is a top view showing the slide fastener concerning Example 1 of the present invention. It is a perspective view which expands and shows the principal part of the fastener stringer in the same slide fastener. FIG. 3 is a sectional view taken along line III-III shown in FIG. 2. It is a top view of the same fastener stringer. It is a bottom view of the same fastener stringer. FIG. 4 is a plan view illustrating a tape side edge portion before a second tape fixing portion of the tape member according to the first embodiment is folded. It is sectional drawing which shows the tape side edge part before the 2nd tape fixing part in a tape member is folded back. It is sectional drawing which shows the tape side edge part in the state in which the 2nd tape fixing part in the tape member was folded and sewn on the 1st tape fixing part. It is a schematic diagram which shows typically the state by which the string member was linearly fixed to the tape side edge part of the tape member by the needle thread. FIG. 7 is a schematic diagram showing a state in which a needle thread has penetrated a tape side edge and passed through a loop of a string member (looper thread) in a sewing operation for fixing the string member. FIG. 11 is a schematic view showing a state in which the sewing needle has slightly risen from the state of FIG. 10 in the sewing operation. FIG. 12 is a schematic diagram showing a state in which the sewing needle further rises from the state of FIG. 11 and the looper holding the string member has passed through the loop of the needle thread in the sewing operation. FIG. 8 is a schematic diagram showing a state in which the tape body is fed rearward and the sewing needle descends and passes through the loop of the string member in the sewing operation. FIG. 9 is a cross-sectional view illustrating a cross section of a tape member according to a modification of the first embodiment. FIG. 13 is a cross-sectional view illustrating a cross section of a tape member according to another modification of the first embodiment. FIG. 7 is a cross-sectional view illustrating a tape side edge of a tape unit according to a second embodiment of the present invention. It is a top view which shows the tape side edge part before the 2nd tape fixing | fixed part is folded back in the same tape member. FIG. 6 is a plan sectional view showing a tape side edge portion before a second tape fixing portion is folded back in the tape member. It is a schematic diagram which shows the stitch of the lockstitch which fixes a string member to the same tape side edge part. FIG. 13 is a plan view illustrating a tape side edge of a tape member according to a third embodiment of the present invention. It is a schematic diagram which shows the stitch of the overlock stitch which fixes a string member to the tape side edge part. It is a schematic diagram which shows the stitch of the overlock stitch used in the modification of Example 3. FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings by way of examples. It should be noted that the present invention is not limited to the embodiments described below at all, and has various modifications as long as it has substantially the same configuration as the present invention and achieves the same operation and effect. It is possible.

  For example, in each of the following embodiments, a case is described in which a plurality of fastener elements made of synthetic resin are attached to a tape side edge of a tape member by injection molding. It is also possible to form a fastener stringer and a slide fastener by attaching a metal fastener element to the side edge instead of the synthetic resin fastener element. In this case, the metal fastener element is formed by inserting the tape side edges of the tape member into the two legs of the fastener element and pressing the fastener element legs toward the tape side edge as in the conventional case. By being deformed, it is fixed to the tape side edge of the tape member.

  FIG. 1 is a plan view illustrating the slide fastener according to the first embodiment. FIG. 2 is an enlarged perspective view showing a main part of a fastener stringer in the slide fastener, and FIG. 3 is a sectional view taken along line III-III shown in FIG. FIG. 4 and FIG. 5 are a plan view and a bottom view showing a main part of the fastener stringer. 2 to 5, illustration of the needle thread is omitted.

  In the following description, the front-back direction refers to the length direction of the tape member, and is the same direction as the sliding direction in which the slider slides. In particular, the direction in which the slider slides when closing the slide fastener is defined as the front, and the direction in which the slider slides when the slide fastener is opened is defined as the rear.

  The left-right direction refers to the width direction of the tape member, and refers to the direction perpendicular to the length direction of the tape member and the front and back directions. Further, the vertical direction refers to the direction of the tape front and back of the tape member, and in particular, the direction exposed to the outside when the slide fastener is used (for example, the direction in which the slider pull is arranged with respect to the tape member). And the opposite direction is downward.

  As shown in FIG. 1, the slide fastener 1 according to the first embodiment includes a pair of left and right fastener stringers 10 in each of which an element row 11 is formed along opposing tape side edges 22 of the left and right tape members 20. Left and right first stoppers 12 (also referred to as upper stoppers) arranged adjacent to the element row 11 at the front end of each fastener stringer 10, and adjacent to the element row 11 at the rear end of the pair of fastener stringers 10. And a slider 14 attached to the element row 11 and slidable along the element row 11.

  In the slide fastener 1 according to the first embodiment, the tape member 20 of the fastener stringer 10 is provided with waterproofness, and is formed as a water-stop fastener that suppresses intrusion of liquid from the front side to the back side of the tape member 20. I have. In addition, the separable bottom end stop 13 of the first embodiment includes a butterfly pin disposed adjacent to the element row 11 at the rear end of the left tape member 20 and an element at the rear end of the right tape member 20. It has a box pin arranged adjacent to the row 11, and a box body formed integrally with the box pin at the rear end of the box pin, into which a wing pin can be inserted.

  The first stopper 12, the separable bottom end stop 13 and the slider 14 in the slide fastener 1 of the first embodiment are the first stop, the separable bottom stop generally used in the conventional watertight fastener. Since they are formed in the same manner as the insert and the slider, detailed description thereof is omitted here. Further, in the present invention, instead of the separable bottom end stop 13, a second stopper (also referred to as a lower stopper) formed across the left and right tape members 20 can be provided adjacent to the element row 11. is there.

  The left and right fastener stringers 10 each have a tape member 20 in the form of a narrow band, and an element row 11 formed along a tape side edge portion 22 facing a counterpart of the tape member 20. The element row 11 is formed by providing a plurality of fastener elements 15 made of synthetic resin on the tape side edge portion 22 at regular intervals by injection molding.

The fastener element 15 of the first embodiment has, for example, the same shape as a fastener element arranged in a conventional general water-blocking fastener.
Briefly, the fastener element 15 of the first embodiment includes a first element portion 15a disposed on the tape back surface side of the tape member 20 and a first element portion 15a disposed on the tape front surface side of the tape member 20. Has a second element portion 15b having a different shape.

  Here, the tape surface (member surface) of the tape member 20 refers to the second tape fixing portion 22 c of the tape side edge portion 22 of the tape member 20, as described later, The surface (upper surface) that faces upward and is exposed to the outside when the folded shape of the portion 22 is held. Further, the tape back surface (member back surface) of the tape member 20 is a surface (lower surface) that is disposed on the opposite side of the tape front surface and faces downward in a state where the folded state of the second tape fixing portion 22c is maintained. To tell.

  The first element portion 15a of the fastener element 15 is formed of a first body fixed to the tape member 20, a neck formed continuously from the first body, a neck having a constricted shape, and formed continuously from the neck. And an oval engagement head.

  The second element portion 15b extends in the tape width direction from the second body portion so as to protrude from a substantially rectangular parallelepiped second body portion fixed to the tape member 20 and a side edge of the tape member 20 facing the tape. And an element head. The element head of the second element portion 15b has a shape in which the dimension in the tape length direction gradually decreases in two steps toward the tip of the element head. In the present invention, the shape of the fastener element 15 is not limited and can be arbitrarily changed.

  The tape member 20 according to the first embodiment includes a tape body 23 formed by cutting a thin cloth having flexibility and waterproof and moisture-permeable properties into a narrow width, and a tape side edge 22 of the tape body 23. And first and second core cord portions 24a and 24b provided along the tape length direction. In this case, the first core cord portion 24a is provided on the member surface of the tape member 20 so as to bulge upward from the tape body 23, and the second core cord portion 24b is provided on the member back surface of the tape member 20 with tape. It is provided so as to swell downward from the body 23.

  The tape body 23 constituting the tape member 20 is formed by preparing a thin cloth having a waterproof and moisture-permeable property and cutting the cloth into a narrow width (or a desired shape). As the thin cloth having the above-mentioned waterproof and moisture-permeable properties, for example, a cloth such as Gore-Tex (registered trademark) can be used.

  Further, in the present invention, the tape body 23 is formed by using a cloth having other properties such as water absorption (perspiration), quick drying, heat storage, or antifouling property, instead of the waterproof and moisture permeable properties described above. Alternatively, it may be formed using a material other than fabrics such as animal natural leather and synthetic leather.

  The tape member 20 according to the first embodiment includes a tape main body 21 sewn to a zipper-attached product such as clothing or a bag, and a first and second core extending from one side edge of the tape main body 21 in a tape width direction. A plurality of fastener elements 15 in a state where the tape side edge 22 is provided with the first and second core strings 24a, 24b. It is formed by molding. For this reason, the tape side edge portion 22 may be called an element attachment portion.

  Although the tape member 20 of the first embodiment has a narrow width form as described above, in the present invention, for example, a cloth (also referred to as a garment cloth) which constitutes a part of a fastener-attached product such as clothing. Can be used as a tape member, and a slide fastener can be manufactured by directly forming a plurality of fastener elements 15 on the garment fabric by injection molding.

  In this case, the tape member (or the tape body) does not have a narrow width, but has a shape corresponding to a component used for the fastener-attached product. For example, when the plurality of fastener elements 15 are formed directly on the garment fabric (parts of the placket) forming the placket of the garment, the tape body of the tape member on which the zipper elements 15 are formed has desired properties (for example, (Waterproof, moisture-permeable) is formed by cutting the fabric into a shape corresponding to the component parts of the placket, instead of a narrow width shape. This makes it possible to obtain a flexible and lightweight slide fastener that has a sense of unity with a fastener-attached product such as clothing.

  In the first embodiment, as shown in FIG. 8, the tape side edge 22 of the tape member 20 is continuously arranged in the tape width direction from the tape main body 21 to form the first core cord portion 24a. A first tape fixing portion 22a, a bent portion 22b extending from the first tape fixing portion 22a and bent in a substantially U-shape on the back side of the member, and a second tape fixing portion extending from the bent portion 22b toward the inside of the tape. A portion 22c. The second tape fixing portion 22c is overlapped with the first tape fixing portion 22a, and is sewn to the first tape fixing portion 22a by a tape sewing line 29.

  In addition, the tape side edge 22 of the first embodiment includes a first tape surface which is an inner surface facing when the second tape fixing portion 22c is overlapped with the first tape fixing portion 22a, and a tape side edge 22. A second tape surface forming a member front surface and a member back surface.

  Here, the first tape surface and the second tape surface are formed such that, in a state where the tape body 23 is flat (a state before the second tape fixing portion 22c is folded), one tape surface of the tape body 23 and the other A tape surface refers to a first tape surface. In particular, the first tape surface faces upward when a sewing needle 5 is pierced when performing a sewing process for fixing a string member 25 to be described later with respect to the tape body 23. Reference numeral 26 denotes a tape surface running along the tape length direction, and the second tape surface refers to a tape surface on which a loop of the needle thread 26 is formed by the pierced sewing needle 5. In particular, in the tape body 23 of the first embodiment, the second tape surface is the tape surface on which the string member 25 is fixed.

  Therefore, in the tape side edge portion 22 of the first embodiment, the second tape fixing portion 22c is configured such that the second tape surface of the tape side edge portion 22 is directed outward through the bent portion 22b and the first tape surface is The first tape fixing portion 22a is folded back and sewn to form an inner peripheral surface.

  In this case, the portion of the first tape fixing portion 22a close to the tape main portion 21 and the portion near the leading end of the second tape fixing portion 22c (the portion near the tape-side edge serving as a cut of the tape body 23) The first and second tape fixing portions 22c are sewn to each other by a tape sewing line 29 in a state of being overlapped.

  The first core cord portion 24a of the first embodiment is linearly provided on the member surface (second tape surface) of the first tape fixing portion 22a at the tape side edge 22 along the tape length direction. The second core cord portion 24b is provided linearly along the tape length direction on the member rear surface (second tape surface) of the second tape fixing portion 22c at the tape side edge portion 22.

  Also, the first and second core cord portions 24a and 24b are each made of a soft and bulky twisted yarn, as schematically shown in FIG. 9, for example, in the structure of the first core cord portion 24a. The string member 25 is formed by being linearly arranged along the tape length direction and fixed by a single needle thread 26. In FIG. 9, in order to more clearly show the structure of the first core string portion 24 a, the tape side edge portion 22 of the tape body 23 and the string member are compared with the first core string portion 24 a actually formed. 25, the gap between the needle thread 26 and the needle thread 26 is expanded, and the intersection of the needle thread 26 itself is loosened.

  In the first and second core cord portions 24a and 24b of the first embodiment, as shown in FIG. 9, while the needle thread 26 repeatedly forms a constant stitch form in the tape length direction, the needle thread 26 The loop is entangled with each of the string members 25 forming the first and second core string portions 24a and 24b, so that the needle thread 26 tightens the string member 25 without penetrating the string member 25, and the tape side edge is formed. 22.

  In this case, the thickness of each of the cord members 25 forming the first and second core cord portions 24a and 24b may be arbitrarily selected according to the size and shape of the fastener element 15 formed on the tape member 20. Can be. Further, in the case of the first embodiment, the first string member 25a forming the first core string portion 24a and the second string member 25b forming the second core string portion 24b have the same thickness, but have the same thickness. In the present invention, the thickness of the first string member 25a and the thickness of the second string member 25b can be made different from each other.

  Further, as the first and second string members 25a and 25b of the first embodiment, a string member 25 having an arbitrary color can be used. That is, in the first embodiment, the respective colors of the tape body 23, the first and second string members 25a and 25b, the needle thread 26, and the fastener element 15 can be selected, whereby the slide fastener 1 can be selected. By increasing the design variations, the design of the fastener-attached product can be effectively improved.

  As the needle thread 26 of the first embodiment, a thread finer than the string member 25 forming the first and second core cord portions 24a and 24b is used. The needle thread 26 runs on the first tape surface of the tape side edge portion 22 and penetrates the tape body 23 from the first tape surface to the second tape surface at regular intervals, and also pierces the tape body 23 at a constant interval. One loop is formed on the second tape surface each time. Further, each loop formed by the needle thread 26 contacts the outer peripheral surface of the bulky cord member 25 on the second tape surface side of the tape side edge 22 without penetrating the bulky cord member 25. Intersect two times.

  The needle thread 26 forms the above-described loop form (stitch), so that the string member 25 that is linearly extended can be attached to the tape side edge 22 by one needle thread 26 in the tape length direction or the like. Secured so that it does not move in the width direction of the tape. In addition, the outer peripheral surface of the string member 25 refers to the peripheral surface of the string member 25 which is disposed on the side opposite to the inner peripheral surface that contacts the tape body 23 and is exposed to the outside.

  Here, a tape body 23 cut into a narrow width is prepared, and first and second core cord portions 24a and 24b are formed on the tape side edge 22 of the tape body 23, as shown in FIG. A method of manufacturing the tape member 20 will be described with reference to FIGS.

  First, the first and second core cord portions 24a and 24b are formed on the second tape surface of the tape side edge portion 22 of the prepared narrow width tape body 23. In this case, as shown in FIGS. 6 and 7, the sewing machine is attached to the flat tape body 23 before the second tape fixing portion 22 c of the tape side edge 22 is folded back to the first tape fixing portion 22 a. By performing sewing, the first and second string members 25a and 25b are fixed linearly and parallel to each other along the tape length direction.

  Further, the first string member 25a is fixed to the second tape surface of the first tape fixing portion 22a of the tape side edge 22 by a needle thread 26, and the second string member 25b is fixed to the second side of the tape side edge 22. It is fixed to the second tape surface of the tape fixing portion 22c by the needle thread 26.

  In the first embodiment, when the first and second string members 25a and 25b are fixed to the first and second tape fixing portions 22a and 22b of the tape side edge portion 22 by sewing, respectively, double chain stitching operation. Is performed using a sewing machine provided with a sewing machine needle 5 and a looper 6, and the first and second string members 25a and 25b are each used as a looper thread (lower thread). .

  In the first embodiment, in the sewing machine used for fixing the first and second string members 25a and 25b, a sewing needle 5 and a looper 6 are specified as a display symbol 401 in L0120-1984 of Japanese Industrial Standard (JIS). A double chain stitch sewing machine is used which operates to form the double chain stitch type described.

  Further, in the following description, a case will be described in which the first cord member 25a is fixed to the first tape fixing portion 22a of the tape side edge portion 22 to form the first core cord portion 24a. When the second cord member 25b is fixed to the second tape fixing portion 22c of the tape side edge portion 22 to form the second core cord portion 24b, the same sewing process as in the case of the first core cord portion 24a is performed. Is

  When the first string member 25a is fixed to the first tape fixing portion 22a of the tape side edge portion 22 by sewing, the needle thread 26 is passed through the sewing as shown in FIGS. The sewing machine needle 5 is raised and lowered in the vertical direction, and the looper 6 repeatedly advances and retreats at a predetermined timing on the back surface side of the needle plate, and aligns the tape side edge 22 of the tape body 23 with the vertical movement of the sewing machine needle 5. This is performed by intermittently moving a predetermined feed amount toward the downstream side (rearward).

  More specifically, as the sewing needle 5 is lowered, the tape side edge 22 of the tape body 23 is pierced from the first tape surface to the second tape surface as shown in FIG. The sewing needle 5 passes through the loop 27a of the first string member 25a (looper thread) formed by the retreat of the looper 6, and moves to the needle lowermost position.

Next, the sewing machine needle 5 starts to rise from the needle lowermost position. Due to the rise of the sewing machine needle 5, the loop 26a of the needle thread 26 is loosened (expanded) at the tip of the sewing machine needle 5, as shown in FIG. Further, the looper 6, which has been waiting at the predetermined standby position, advances while passing through the loose loop 26a of the needle thread 26 while holding the first string member 25a at the tip thereof, and the looper 6 is moved forward. The loop 26a of the needle thread 26 is scooped (in other words, the loop 27b next to the first string member 25a loops with the loop 26a of the needle thread 26). At the same time, the sewing machine needle 5 further rises with the loop 26 a of the needle thread 26 hooked on the looper 6 and moves above the tape side edge 22. At this time, the needle thread 26 is tightened by applying tension to the needle thread 26. As a result, the loop of the needle thread 26 formed on the second tape surface side of the tape side edge 22 as shown in FIG. 26a passes through the loop 27a of the first string member 25a already formed in the vicinity of the tape side edge 22, and the tip of the loop 26a of the needle thread 26 follows the first string member 25a. The formed loop 27b passes through.

  Next, as shown by an arrow in FIG. 12, the tape side edge 22 of the tape body 23 moves downstream by the feeding operation of the sewing machine, so that the sewing needle 5 moves relative to the tape side edge 22. As the sewing machine advances, the sewing needle 5 starts to descend and penetrates the tape side edge 22. The looper 6 that has passed through the loop 26 a of the needle thread 26 also moves backward in accordance with the movement of the tape side edge 22. At this time, as shown in FIG. 13, the loop 27b of the first string member 25a is loosened at the tip of the looper 6.

  Thereafter, the sewing machine needle 5 penetrating the tape side edge 22 further descends, and the next loop 26 b of the needle thread 26 formed on the second tape surface side of the tape side edge 22 is moved to the leading end of the looper 6. (In other words, the loop 26b of the needle thread 26 loops with the loop 27b of the first string member 25a). At the same time, the looper 6 is retracted with the sewing machine needle 5 hooked on the loop 27b of the first string member 25a, and when the looper 6 pierces the tape side edge portion 22 by one before the sewing machine needle 5, The formed needle thread 26 escapes from the loop 26a and returns to the standby position.

  Further, with the retraction of the looper 6, a looper thread tension applying unit (not shown) pulls the first string member 25a (looper thread) strongly as shown in FIG. Add. Thereby, the first string member 25a in a range from the loop 27a of the previous first string member 25a to the sewing machine needle 5 pierced through the tape side edge 22 is straightened, and at the same time, the previous needle The loop 26a of the thread 26 and the loop 26z of the two preceding needle threads 26 are deformed. Further, at this time, by applying tension to the needle thread 26, the needle thread 26 can be tightened and securely wound around the first string member 25a.

  As a result, the needle thread 26 and the first string member 25a advance to the state shown in FIG. 10, and the loop 26z of the two immediately preceding needle thread 26 moves the outer peripheral surface of the straightened first string member 25a. The first string member 25a is entangled so as to cross twice while in contact with each other, and the first string member 25a is tightened (ie, the state of the loop of the needle thread 26 immediately before the loop 26z shown in FIG. 10). The string member 25a is fixed by the loop 26z of the needle thread 26.

  As described above, the sewing machine needle 5 and the looper 6 repeatedly perform the double chain stitching operation every one stitch (every pitch of the sewing machine) in accordance with the feeding operation of the sewing machine, and the sewing machine needle 5 is taped. By applying strong tension to the first string member 25a intermittently at the timing of penetrating the side edge portion 22, the ordinary double chain stitch is deformed, and the first string member 25a is straightened. And the loop of the needle thread 26 is entangled with the linear first string member 25a.

  As a result, the needle thread 26 runs on the first tape surface of the tape side edge 22 and penetrates the tape side edge 22 to form a loop on the second tape surface for each needle, and the needle thread 26 Can intersect and tighten the outer peripheral surface of the first string member 25a that is linearly extended twice.

  As a result, the stitches of the needle thread 26 as shown in FIG. 9 are formed, so that the needle thread 26 does not penetrate the first string member 25a, and the linear first string member 25a is connected to the tape side edge. The first core portion 24a can be firmly and stably fixed to the second tape surface 22 along the length direction of the tape by the interlacing of the loops of the needle thread 26. In the first core string portion 24a to be formed, each loop of the needle thread 26 is entangled with the first string member 25a so as to tighten the first string member 25a. Can be prevented from shifting in the tape length direction or the tape width direction.

  Further, in the first embodiment, the needle thread 26 and the second string member 25b are used simultaneously with the formation of the first core string portion 24a or before or after the formation of the first core string portion 24a. The second core string portion 24b can be formed by performing the sewing process using the chain stitch sewing machine in the same manner as in the case of the first core string portion 24a.

  Also in the formation of the second core string portion 24b, a stitch of the needle thread 26 as shown in FIG. 9 is formed, so that the needle thread 26 does not penetrate the second string member 25b, and the linear first thread 25b is formed. The string member 25b can be firmly and stably fixed to the second tape surface of the tape side edge portion 22 along the tape length direction by the interlacing of each loop of the needle thread 26.

  By forming the first and second core cord portions 24a and 24b as described above, the first tape fixing portion 22a of the tape side edge portion 22 is provided with the first and second core cord portions 24a and 24b, as shown in FIGS. The string member 25a is linearly provided along the tape length direction, and the second string member 25b is separated from the first core string portion 24a at the second tape fixing portion 22b of the tape side edge portion 22, And it is provided linearly in parallel with the first core cord portion 24a. In particular, in this case, even if the tape body 23 has elasticity, for example, the first and second string members 25a and 25b can be fixed straight and straight to the tape side edge 22 of the tape body 23.

  Therefore, in the first embodiment, the first and second core cord portions 24a and 24b can be easily formed later on the tape body 23 without the core cord portion having the desired characteristic of waterproof and moisture-permeable. it can. Also, it is possible to prevent the first and second core cord portions 24a and 24b from being displaced in position, and prevent the first and second cord members 25a and 25b from moving in the tape length direction. .

  Further, in the first embodiment, when performing sewing, it is not necessary to separately prepare and guide the string member 25 together with the needle thread and the looper thread for the sewing machine, and the first core is formed only by one sewing operation. The cord portion 24a or the second core cord portion 24b can be formed. For this reason, formation of the 1st and 2nd core string parts 24a and 24b can be performed simply and efficiently. In addition, for example, a conventional general double chain stitch sewing machine can be used instead of a sewing machine having a special structure for performing a special movement, so that an increase in costs such as equipment costs can be suppressed.

  After forming the first and second core cord portions 24a and 24b along the tape length direction on the tape side edge portion 22 of the tape body 23 as described above (see FIGS. 6 and 7), For example, as shown in FIG. 8, the second tape fixing portion 22c of the edge portion 22 on which the second core cord portion 24b is formed is positioned with reference to an intermediate position between the first core cord portion 24a and the second core cord portion 24b. Then, the tape is folded back in the tape width direction so that the first tape surface on which the needle thread 26 of the tape side edge 22 runs faces inward with respect to the first tape fixing portion 22a on which the first core cord portion 24a is formed. Overlap. Thereby, the bent part 22b between the first tape fixing part 22a and the second tape fixing part 22c is bent in a substantially U shape.

  Further, the first tape fixing portion 22a and the second tape fixing portion 22c that are superimposed are positioned on the tape inner side of the first and second string members 25a and 25b (position approaching the tape main portion 21). Stitch together. At this time, in the first embodiment, the first and second tape fixing portions 22a and 22c are sewn along the tape length direction using the double chain stitch sewing machine. At a position between the string members 25a and 25b and the tape main body 12, a tape sewing line 29 by double chain stitching is formed along the first and second string members 25a and 25b.

  As described above, the first tape fixing portion 22a and the second tape fixing portion 22c are sewn together by the tape sewing line 29, so that the first core is attached to the member surface of the tape side edge portion 22 as shown in FIGS. The tape member 20 according to the first embodiment in which the cord portion 24a is arranged so as to bulge upward, and the second core cord portion 24b is arranged so as to bulge downward on the member back surface of the tape side edge portion 22. Is manufactured.

  In the tape member 20 of the first embodiment manufactured in this way, the second tape fixing portion 22c is sewn to the first tape fixing portion 22a in a folded state. For this reason, even if the tape-side edge of the second tape fixing portion 22c is, for example, in an unprocessed state (cut state) as it is cut, the unprocessed tape-side edge of the tape member 20 is It is folded back to the back side of the member, and is not exposed to the side surfaces of the slide fastener 1 facing the left and right tape members 20.

  Therefore, the unprocessed side edge of the tape body 23 is hard to be seen from the outside (particularly, the upper surface side of the slide fastener), so that the appearance quality of the slide fastener 1 can be improved. Further, even if the sliding operation of the slider 14 is repeatedly performed, defects such as fraying of the thread hardly occur on the opposing side surfaces of the left and right tape members 20, so that the quality and performance such as the sliding property of the slider 14 are reduced. It can be stably maintained for a long time.

  In the first embodiment, the first and second core cord portions 24a and 24b are formed by fixing the first and second cord members 25a and 25b made of twisted yarn to the tape side edge 22 of the tape body 23. Have been. However, in the present invention, the first and second cord members 25a and 25b forming the first and second core cord portions 24a and 24b are each replaced with a monofilament or a plurality of yarns instead of the above-described twisted yarn. It is also possible to use a knit cord obtained by knitting the periphery in a bundled state.

  In the first embodiment, a synthetic resin material is injection-molded on the tape side edge 22 of the tape member 20 on which the first and second core cord portions 24a and 24b are formed, and has a predetermined shape. By forming the plurality of fastener elements 15, the fastener stringer 10 is manufactured.

  In this case, each fastener element 15 overlaps the tape sewing line 29 obtained by sewing the first tape fixing portion 22a and the second tape fixing portion 22c of the tape side edge 22 (like straddling the tape sewing line 29). The tape sewing line 29 may be formed in a size that does not overlap the tape sewing line 29 (a size formed in a region closer to the bent portion 22b than the tape sewing line 29). good.

  Further, the fastener stringers 10 of the first embodiment manufactured as described above are combined in pairs, and the sliders 14 are attached to the element rows 11 of the set of fastener stringers 10 and the first stoppers are attached. By forming the tool 12 and the separable bottom end stop 13, the slide fastener 1 shown in FIG. 1 is manufactured.

  In the slide fastener 1 of the first embodiment thus obtained, a tape body 23 having waterproof and moisture-permeable properties is prepared, and the first and second string members 25a, 25b are provided on the tape side edge 22 of the tape body 23. The tape member 20 having the first and second core cord portions 24a and 24b swelling in the front and back directions is manufactured by fixing the tape member 20 later. For this reason, the tape member 20 for slide fasteners having waterproof and moisture-permeable properties can be easily manufactured at a relatively low manufacturing cost.

  Further, since the first and second string members 25a and 25b are firmly fixed by the crossing (or entanglement) of the needle thread 26 to form the first and second string members 25a and 25b, the tape side edge portion 22 is formed. The positions of the first and second string members 25a and 25b fixed to the tape are less likely to shift in the tape width direction or the tape length direction.

  Accordingly, when the fastener element 15 is formed on the tape side edge 22 of the tape member 20 by injection molding, it is possible to prevent the occurrence of hot water leakage and to stably attach the fastener element 15 to a predetermined position. Also, it is possible to effectively prevent the posture of the formed fastener element 15 from being inclined and the position of the fastener element 15 from being shifted in the tape length direction.

  Therefore, the slide fastener 1 according to the first embodiment has an added value that the tape member 20 has a waterproof and moisture-permeable property, in addition to appropriately and stably providing the original performance of the fastener such as the lateral pulling strength. . Further, since the slide resistance of the slider 14 is reduced due to the thinness of the tape body 23, the slide fastener 1 is a high-quality slide fastener 1 in which the slideability of the slider 14 is improved. The slide fastener 1 having such a feature is suitably used, for example, for outdoor products.

  In the first embodiment described above, the tape side edge portion 22 of the tape member 20 is substantially U-shaped with the first tape fixing portion 22a on which the first core cord portion 24a is formed as shown in FIG. , And a second tape fixing portion 22c on which the second core cord portion 24b is formed. However, the form of the tape side edge portion 22 in the present invention is not limited to this, and the tape side edge portions 32 and 42 can be formed in a form as shown in FIGS. 14 and 15, for example. .

  For example, as shown in FIG. 14, a sectional view of a tape member 30 according to a first modification of the first embodiment, the tape side edge 32 of the tape member 30 according to the first modification A tape fixing portion 32a that is continuously arranged in the width direction and the core string portion 24 is formed on the surface of the member; and a bent portion 32b that extends from the tape fixing portion 32a and is bent in a substantially U-shape toward the back surface of the member. And a tape turning portion 32c extending from the bent portion 32b toward the inside of the tape and superimposed on the tape fixing portion 32a.

  In this case, the portion of the tape fixing portion 32a close to the tape main portion 31 and the tip of the tape turning portion 32c are fixed to the string member 25 with the tape fixing portion 32a and the tape turning portion 32c overlapped. They are stitched together by a needle thread 26 fixed to the portion 32a.

  The core cord portion 24 in the first modified example is linearly provided on the tape fixing portion 32a of the tape side edge portion 32 along the tape length direction. The core string portion 24 includes a single string member 25 made of a twisted thread arranged linearly along the tape length direction, and the string member 25 serving as a fixed thread thinner than the string member 25. Is formed by being fixed by the needle thread 26.

  It should be noted that the stitches of the needle thread 26 for fixing the string member 25 of the first modified example correspond to the first and second string members 25a and 25b in the first and second core string portions 24a and 24b in the first embodiment. It is formed similarly to the stitch of the needle thread 26 to be fixed.

  That is, the core string portion 24 in the first modified example is sewn by the double chain stitch sewing machine using the string member 25 as a looper thread in the same manner as in the case of the above-described first embodiment. Is fixed to the tape fixing portion 32a with the needle thread 26. In this case, in the double chain stitch sewing machine, similarly to the first embodiment, the sewing needle 5 and the looper 6 perform the double chain stitch operation, and the tension is intermittently applied to the string member 25 at a predetermined timing. An operation of strongly adding and linearly extending is performed.

  In the first modified example, the tape fixing portion 32a and the tape turning portion 32c of the tape side edge portion 32 are the same as the needle thread 26 for fixing the string member 25 to the tape fixing portion 32a, as described above. 26 stitched together.

  For example, as shown in FIGS. 6 to 8, the tape side edge portion 22 in the first embodiment fixes the first and second string members 25a and 25b to the first and second tape fixing portions 22a and 22c, respectively. After that, the second tape fixing portion 22c is folded back and sewn to the first tape fixing portion 22a.

  On the other hand, in the first modified example shown in FIG. 14, before the string member 25 is fixed to the tape side edge 32, the tape turn back portion 32 c of the tape side edge 32 is turned back and the tape fixing portion 32 a Is superimposed. Then, in a state where the tape turn-back portion 32c is superimposed on the tape fixing portion 32a, the string member 25 is sewn by the double chain stitch sewing machine to form the core string portion 24 as described above, so that the string member 25 is fixed to the tape fixing portion 32a (The tape surface opposite to the tape surface on which the tape folded portion 32c is overlapped), and the overlapped tape fixing portion 32a and the tape folded portion 32c are stitched together.

  In the tape side edge portion 32 of the first modified example formed in this way, the string member 25 is firmly fixed to the member surface of the tape fixing portion 32a, and the core string portion 24 is fixed to the member surface of the tape side edge portion 32. Only easily and stably are formed.

  Further, in this case, even if the tape side edge of the tape turn-back portion 32c is in an unprocessed state while being cut, the unprocessed side edge is exposed to the opposed side portions of the left and right tape members 30. No longer. For this reason, in the first modified example, the appearance quality of the slide fastener 1 is improved as in the case of the above-described first embodiment. Since the problem such as the fraying of the yarn hardly occurs on the opposing side surface portion, the quality and performance of the slide fastener 1 can be stably maintained for a long period of time.

  In the first modified example of the first embodiment, the cord member 25 is fixed to the tape fixing portion 32a, and the tape turning portion 32c is sewn to the tape fixing portion 32a. The string member 25 is fixed to the tape fixing portion 32a without sewing the tape folding portion 32a to the tape fixing portion 32a, and thereafter, the tape turning portion 32c is turned back to the tape fixing portion 32a, and the tape turning portion 32c is bonded by adhesive or the like. Alternatively, it may be fixed to the tape fixing portion 32a by pressing with a fastener element 15 to be injection-molded.

  On the other hand, in the tape member 40 according to the second modified example of the first embodiment shown in FIG. 15, when the cross section orthogonal to the length direction of the tape member 40 is viewed, the fixed string member 25 is wrapped inside. A first covering portion 42a extending from the first edge of the tape covering portion 42a on the tape main portion side, and a first edge of the tape covering portion 42a. And a second adjacent portion (tape outer adjacent portion) 42c extending from the second end edge on the side.

  In this case, the first adjacent portion 42b is disposed adjacent to the tape main portion side of the tape covering portion 42a, and the second adjacent portion 42c is disposed adjacent to the opposite side of the tape covering portion 42a. The first adjacent portion 42b is arranged continuously from the tape main portion 41 in the tape width direction. From the first adjacent portion 42b, the tape covering portion 42a and the second adjacent portion 42c are arranged in the tape width direction. They are arranged in order.

  In the second modification, first, the cord member 25 is fixed to the second tape surface of the tape covering portion 42a to form the core cord portion 24, and then, the tape covering portion 42a is fixed to the periphery of the fixed cord member 25. The string member 25 is wrapped around the surface and wrapped around the inside of the tape covering portion 42a, and the second adjacent portion 42c is overlapped with the first adjacent portion 42b. Thereafter, the overlapped second adjacent portion 42c and first adjacent portion 42b are stitched along the string member 25 using a double chain stitch sewing machine, whereby the tape side edge portion 42 is formed.

  In the core string portion 24 in the second modified example, a single string member 25 made of a twisted thread is sewn by a double chain stitch sewing machine using the string member 25 as a looper thread in the same manner as in the first embodiment. By processing, it is formed by being linearly fixed to the tape covering portion 42a along the tape length direction. In the second modification, the stitches of the needle thread 26 for fixing the string member 25 are formed in the same manner as in the case of the first and second core cord portions 24a and 24b in the first embodiment.

  In the tape side edge portion 42 of the second modified example formed in this manner, the cord member 25 is firmly fixed to the inner peripheral surface (second tape surface) of the tape covering portion 42a, and the core cord portion 24 is stabilized. Formed. Further, since the fixed string member 25 is wrapped and protected by the tape covering portion 42a, fluff or the like hardly occurs in the core string portion 24, and the durability of the core string portion 24 can be improved.

  Furthermore, also in the second modified example, the tape side edges of the second adjacent portion (tape outer side adjacent portion) 42c are not exposed to the opposing side surface portions of the left and right tape members 40, so that the tape side edges are cut. Even in the untreated state, the appearance quality of the slide fastener 1 is improved and the quality and performance of the slide fastener 1 are stable over a long period of time, as in the first embodiment and the first modification. Can be maintained.

  FIG. 16 is a cross-sectional view illustrating a tape side edge of the tape unit according to the second embodiment. 17 and 18 are a plan view and a cross-sectional view showing a tape side edge portion before the second tape fixing portion is folded back in the tape member. FIG. 19 is a schematic diagram schematically showing a lockstitch stitch for fixing the string member to the side edge of the tape.

  In the tape member 50 of the second embodiment, the stitches of the needle thread 26 as in the first embodiment described above are used as means for fixing the first and second string members 25a and 25b to the tape side edge 22 of the tape body 23. Instead, a zigzag lockstitch stitch with a needle thread 56 and a bobbin thread 57 is used.

  The configuration of the tape member 50 of the second embodiment other than the stitches for fixing the first and second string members 25a and 25b is substantially the same as that of the first embodiment. Therefore, in the second embodiment, a description will be given mainly of a configuration different from that of the above-described first embodiment, and portions or members having substantially the same configuration as the above-described first embodiment will be denoted by using the same reference numerals. The description is omitted.

  The tape member 50 according to the second embodiment includes a tape body 23 formed by cutting a cloth having flexibility and waterproof and moisture-permeable properties into narrow widths, and a tape length at a tape side edge 22 of the tape body 23. It has first and second core cord portions 54a and 54b provided along the direction. The tape body 23 of the second embodiment is formed similarly to the tape body 23 of the first embodiment.

  The tape side edge 22 of the tape member 50 extends from the tape main body 21 and extends from the first tape fixing portion 22a where the first core string portion 54a is formed, and extends from the first tape fixing portion 22a. It has a bent portion 22b that is bent in a U-shape, and a second tape fixing portion 22c that extends further from the bent portion 22b and is formed with the second core string portion 54b. Further, the first tape fixing portion 22a and the second tape fixing portion 22c are sewn to each other by a tape sewing line 29 formed in a portion close to the tape main portion 21 in a state of being overlapped with each other.

  In this case, the first core string portion 54a is linearly provided on the member surface of the tape side edge 22 (in other words, the first tape surface of the first tape fixing portion 22a) along the tape length direction. The second core cord portion 54b is linearly provided on the back surface of the member of the tape side edge portion 22 (in other words, the first tape surface of the second tape fixing portion 22c) along the tape length direction.

  In addition, the first and second core cord portions 54a and 54b are each formed by a single cord member 25 (that is, the first cord member 25a or the second cord member 25b) formed of a twisted straight line along the tape length direction. The string member 25 is formed by being fixed by zigzag lockstitch stitches formed by the needle thread 56 and the bobbin thread 57 which are thinner than the string member 25.

  In the second embodiment, the stitch of the lockstitch for fixing the first and second string members 25a and 25b to the tape side edge portion 22 is such that the stitch type of the needle thread 56 and the bobbin thread 57 shown in FIG. By being continuously repeated, it is formed in a zigzag manner with respect to the first or second string member 25b.

  In this case, the first or second string members 25a and 25b are arranged to be inserted between the first tape surface of the tape side edge 22 and the needle thread 56, and the needle thread 56 forming the stitch is The first or second string members 25a and 25b are fixed to the first tape surface of the tape side edge 22 by intersecting in a zigzag manner while contacting the outer peripheral surface of the member 25.

  Here, the stitch format shown in FIG. 19 is a stitch format specified as a display symbol 304 in JIS L0120-1984. That is, in the stitch type used in the second embodiment, the needle thread 56 runs on the first tape surface of the tape side edge 22 and the needle thread 56 moves the tape side edge 22 from the first tape surface to the second tape. And crosses the bobbin yarn 57 on the second tape surface (other yarn lacing).

  When the needle thread 56 intersects with the bobbin thread 57, the needle thread 56 is pulled back, so that the intersection between the needle thread 56 and the bobbin thread 57 is drawn into the tape side edge 22 to form a seam. Is done. Further, by forming each seam (stitch portion) formed for each stitch of the sewing needle 5 in a direction crossing an adjacent seam, a plurality of continuous seams is formed by the string member 25. Are arranged in a zigzag manner so as to straddle.

  When manufacturing the tape member 50 of the second embodiment as described above, first, as shown in FIGS. 17 and 18, the tape side edge 22 of the tape body 23 in a flat state is formed by using a sewing machine. While supplying the first or second string members 25a and 25b so as to be inserted between the first tape surface of the tape side edge 22 and the needle thread 56, a zigzag shape in which the stitch form shown in FIG. By performing the lock stitch and fixing the first or second string members 25a and 25b, the first and second core string portions 54a and 54b are formed sequentially (or simultaneously).

  In this case, the first string member 25a is firmly and firmly fixed to the first tape fixing portion 22a of the flat tape side edge 22 without being penetrated by the needle thread 56, and the second string member 25b Is firmly and firmly fixed to the second tape fixing portion 22c without being penetrated by the needle thread 56. Thereby, as shown in FIGS. 17 and 18, the first and second core cord portions 54a, 54a, which are arranged in parallel and linearly with each other on the tape side edge portion 22 of the tape body 23 having waterproof and moisture permeable properties. 54b can be formed easily and efficiently.

  After forming the first and second core cord portions 54a and 54b as described above, the second tape fixing portion 22c of the tape side edge portion 22 is moved to an intermediate position between the first core cord portion 54a and the second core cord portion 54b. Is folded back in the tape width direction such that the second tape surface on which the bobbin thread 57 of the tape side edge portion 22 runs faces inward with respect to the first tape fixing portion 22a. Thereby, the bent part 22b between the first tape fixing part 22a and the second tape fixing part 22c is bent in a substantially U shape.

  Further, the overlapped first tape fixing portion 22a and second tape fixing portion 22c are moved to a position between the first and second string members 25a and 25b and the tape main portion 21, for example, a double chain stitch sewing machine. And sew together. Thereby, the tape sewing line 29 by the double chain stitch is formed along the first and second string members 25a and 25b.

  As described above, the first tape fixing portion 22a and the second tape fixing portion 22c are stitched together by the tape sewing line 29, whereby the tape member 50 of the second embodiment having the tape side edge portion 22 shown in FIG. 16 is manufactured. Is done. Further, a synthetic resin material is injection-molded on the tape member 50 of the second embodiment, and a plurality of fastener elements 15 having the same shape as that of the first embodiment are formed at a predetermined mounting pitch. Is manufactured.

  As described above, in the second embodiment, the first and second string members 25a and 25b are fixed to the tape side edge portion 22 of the tape body 23 having the waterproof and moisture-permeable property by zigzag lock stitching, thereby performing lock lock. Since the stitches are firmly formed with strong seams, the first and second core cord portions 54a and 54b which bulge in the front and back directions are formed firmly on the tape side edge 22. Can be easily manufactured at relatively low manufacturing costs.

  Then, by manufacturing the slide fastener using the fastener stringer 10 of the second embodiment, the original performance of the slide fastener is appropriately and stably provided. A high quality slide fastener with improved slidability can be easily obtained.

  In the above-described second embodiment, the first and second string members 25a and 25b are inserted and fixed between the first tape surface of the tape side edge 22 and the needle thread 56. When the tape member 50 is manufactured, for example, the first or second string member 25a, 25b is zigzag-shaped while being supplied so as to be inserted between the second tape surface of the tape side edge 22 and the bobbin thread 57. By performing the lock stitching, the first and second core cord portions 54a and 54b can be formed on the second tape surface of the tape side edge portion 22.

  In the second embodiment described above, the tape side edge 22 of the tape member 50 is, as shown in FIG. 16, the first tape fixing portion 22a on which the first core string portion 54a is formed, and the substantially U-shaped And a second tape fixing portion 22c on which the second core string portion 54b is formed. However, in the present invention, the tape side edge of the tape member 50 is formed by using the zigzag lock stitch stitch described in the second embodiment, for example, the tape fixing portion as described in the first modification of the first embodiment. The tape 32 may be formed in the form of a tape side edge 32 (see FIG. 14) having a bent portion 32b and a tape turn-back portion 32c, or may use the zigzag lockstitch stitch described in the second embodiment. For example, the tape side edge portion 42 having the tape covering portion 42a, the first adjacent portion 42b, and the second adjacent portion 42c as described in the second modification of the first embodiment (see FIG. 15). It is also possible.

  Further, in the above-described second embodiment, the stitching method for fixing the first and second string members 25a and 25b to the tape side edge portion 22 is a stitch defined as a display symbol 304 in JIS L0120-1984. Although the format (FIG. 19) is adopted, in the present invention, instead of this stitch format, for example, a stitch format defined as a display symbol 404 in JIS L0120-1984 is adopted, and the first and second stitch formats are adopted. It is also possible to fix the string members 25a and 25b to the tape side edge 22. Here, the stitch format specified as the display symbol 404 in JIS L0120-1984 is a stitch format in which stitches formed by double chain stitching using a needle thread and a looper thread are arranged in a zigzag shape.

  FIG. 20 is a plan view illustrating a tape side edge of the tape member according to the third embodiment. FIG. 21 is a schematic diagram schematically showing an overlock stitch for fixing the string member to the side edge of the tape.

  In the tape member 60 according to the third embodiment, as a means for fixing the string member 25 to the tape-side edge portion 62 of the tape body 23, an overcast stitch formed using a needle thread 66 and two looper threads 67 and 68. (It is also called overlock stitching).

  The configuration other than the stitch for fixing the string member 25 in the tape member 60 of the third embodiment is substantially the same as that of the first embodiment. Therefore, also in the third embodiment, the portions or members having substantially the same configuration as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

  The tape member 60 according to the third embodiment includes a tape body 23 formed by cutting a cloth having flexibility and waterproof and moisture-permeable properties into narrow widths, and a member surface of a tape side edge portion 62 of the tape body 23. A core string portion 64 linearly provided along the tape length direction.

  Although not shown, the tape side edge portion 62 of the tape member 60 is continuously arranged in the tape width direction from the tape main portion 61 in the same manner as in the first modification of the first embodiment. A core cord portion 64 is formed on the surface of the member, a tape fixing portion, a bent portion extending from the tape fixing portion and bent substantially U-shaped on the back surface of the member, and extending from the bent portion toward the inside of the tape. And a tape turn-up portion that is sewn on the tape fixing portion. In this case, in the tape folded portion of the third embodiment, the string member 25 is fixed to the tape fixing portion by the overlock stitch, and is sewn to the tape fixing portion by the same overlock stitch.

  In the core string portion 64 of the third embodiment, one string member 25 made of twisted yarn is linearly arranged along the tape length direction, and the string member 25 is a needle thread thinner than the string member 25. 66 and the first and second looper threads 67 and 68 which are thinner than the string member 25, and are formed by being fixed by an overlock stitch.

  The overlock stitches in the third embodiment are formed by continuously repeating the stitch format shown in FIG. 21 in the tape length direction. The first looper thread 67 forming the stitches crosses the tape member 25 at a constant interval in the tape length direction so as to be obliquely inclined in the tape width direction while contacting the outer peripheral surface of the string member 25. Are fixed to the member surface of the tape side edge portion 62.

  Here, the stitch format shown in FIG. 21 is an overcast stitch format specified as a display symbol 504 in JIS L0120-1984. That is, in the stitch type used in the third embodiment, the needle thread 66 runs on the first tape surface of the tape side edge portion 62 (the first tape surface of the tape fixing portion), and the loop 66a of the needle thread 66 is formed. The first looper thread 67 passes through the first loop 67 a of the first looper thread 67 and the tape side edge 62, and intersects with the second looper thread 68 at the second tape surface of the tape side edge 62 (loops another thread). Further, the loop 68a of the second looper thread 68 intersects with the second loop 67b of the first looper thread 67 at the side face of the opposite side edge of the tape side edge 62 (loops other threads).

  In this case, the first loop 67a of the first looper thread 67 contacts the outer peripheral surface of the string member 25 from the position where the second loop 67b of the first looper thread 67 intersects with the loop 68a of the second looper thread 68. The first loop 67a of the first looper thread 67 crosses the string member 25 obliquely by being extended to the needle penetration point at the next seam. Thereby, the string member 25 is more stably fixed to the tape side edge portion 62 than the stitches shown in FIG.

  When the tape member 60 according to the third embodiment having the above-described configuration is manufactured, first, the tape folded portion of the tape side edge portion 62 is folded and overlapped with the tape fixing portion, and further, the tape folded portion is tape fixed. In the state of being superimposed on the portion, sewing is performed using a sewing machine so as to form the above-described overlock stitch.

  By performing such sewing processing, the string member 25 is fixed to the member surface of the tape fixing portion (the tape surface opposite to the tape surface on which the folded-back portion of the tape fixing portion is overlapped) with the first looper thread 67. At the same time, the overlapped tape fixing portion and tape folded portion can be sewn together by overcast stitching. Thereby, the tape side edge portion 62 includes a tape fixing portion, a substantially U-shaped bent portion, and a tape turning portion sewn to the tape fixing portion, and a core string portion is formed on the member surface of the tape fixing portion. The tape member 60 according to the third embodiment on which the tapes 64 are formed is manufactured.

  Further, a synthetic resin material is injection-molded on the manufactured tape member 60 of the third embodiment, and a plurality of fastener elements 15 having the same shape as that of the first embodiment are formed at a predetermined mounting pitch. Fastener stringers are manufactured.

  As described above, in the third embodiment, the tape member 60 having the core string portion 64 at the tape side edge portion 62 and having the waterproof and moisture-permeable property can be easily manufactured at a relatively low manufacturing cost. Further, by manufacturing the slide fastener using the fastener stringer of the third embodiment, the slide fastener is provided with the proper performance of the slide fastener appropriately and stably. A high quality slide fastener with improved mobility can be easily obtained.

  In the third embodiment described above, the string member 25 is fixed to the member surface (first tape surface) of the tape fixing portion in the tape side edge portion 62 by using the overlock stitch stitching format shown in FIG. Thus, the core string portion 64 is formed. However, in the present invention, for example, the string member 25 is inserted between the back surface of the tape side edge portion 62 and the second looper thread 68 in the overlock stitch type shown in FIG. By making the loops of the two looper threads 68 intersect while making contact with the outer peripheral surface of the cord member 25, the cord member 25 can be fixed to the back surface of the tape side edge 62 to form a core cord portion.

  Further, in the above-described third embodiment, the stitching form of the overlock stitch for fixing the string member 25 to the tape side edge portion 62 employs the stitching form of FIG. 21 specified as a display symbol 504 in JIS L0120-1984. However, in the present invention, instead of this stitch format, the stitch format specified as a display symbol 502 in JIS L0120-1984 or the stitch format shown in FIG. It is also possible to fix to the tape side edge 62.

  Here, the stitch format specified as the display symbol 502 in JIS L0120-1984 is a stitch format of overlock stitching formed using one needle thread and one looper thread. In the stitch form of the display symbol 502, the needle thread runs on the first tape surface (member surface) of the tape side edge 62, and the loop of the needle thread is formed by the first loop of the looper thread and the tape side edge. 62, and intersects with the second loop of the looper yarn on the second tape surface (back surface of the member) of the tape side edge 62 (looping of another yarn).

  In this case, the first loop of the looper yarn contacts the side surface of the opposite side edge of the tape side edge 62 from the position of the second loop of the first looper yarn disposed on the back surface of the member of the tape side edge 62. Both of them extend from the second tape surface to the first tape surface so as to straddle the side surface portion, and are further extended to the needle penetration point in the next stitch while being in contact with the outer peripheral surface of the string member 25, so that the string member 25 Cross diagonally. Thereby, the string member 25 is stably fixed to the tape side edge portion 62 by the stitch.

  The stitch format shown in FIG. 22 shortens the loop 68a of the second looper thread 68 in the stitch format shown in FIG. 21 (stitch format defined as a display symbol 504 in JIS L0120-1984). This is a stitch type formed by elongating the first loop 67a of the first looper thread 67.

  In the case of the stitch type shown in FIG. 22, the first loop 67a of the first looper thread 67 is moved from the position where the second loop 67b of the first looper thread 67 intersects with the loop 68a of the second looper thread 68 to the tape side. The needle at the next seam contacts the side surface of the opposite side edge of the edge portion 62, crosses the side surface portion from the second tape surface to the first tape surface, and further contacts the outer peripheral surface of the string member 25. By being stretched to the penetration point, it intersects obliquely with the cord member 25. Thereby, the string member 25 is stably fixed to the tape side edge 62 by the stitches shown in FIG.

  The tape in which the string member 25 is fixed to the tape side edge portion 62 using the stitch format specified as the display symbol 502 in JIS L0120-1984 as described above, or using the stitch format shown in FIG. The same effect as that of the tape member 60 according to the third embodiment can be obtained with the member.

DESCRIPTION OF SYMBOLS 1 Slide fastener 5 Sewing needle 6 Looper 10 Fastener stringer 11 Element row 12 First stop 13 Separable bottom end fitting 14 Slider 15 Fastener element 15a First element part 15b Second element part 20 Tape member 21 Tape main part 22 Tape side Edge 22a First tape fixing portion 22b Bent portion 22c Second tape fixing portion 23 Tape body 24 Core string portion 24a First core string portion 24b Second core string portion 25 String member 25a First string member 25b Second string member 26 needle thread 26a, 26b needle thread loop 26z needle thread loop 27a, 27b first string member loop 29 tape sewing line 30 tape member 31 tape main part 32 tape side edge 32a tape fixing part 32b bending part 32c tape Folded part 40 Tape member 41 Tape main part 42 Loop side edge 42a tape covering part 42b first adjacent part 42c second adjacent part 50 tape member 54a first core string part 54b second core string part 56 needle thread 57 bobbin thread 60 tape member 61 tape main part 62 tape side Edge 64 Core string 66 Needle thread 66a Loop of needle thread 67 First looper thread 67a First loop of first looper thread 67b Second loop of first looper thread 68 Second looper thread 68a Loop of second looper thread

Claims (9)

In a slide fastener (1) having a pair of left and right fastener stringers (10) in which a plurality of fastener elements (15) are attached to a tape member (20, 30, 40, 50, 60),
The tape member (20, 30, 40, 50, 60) is extended to a flexible tape body (23) and a tape side edge (22, 32, 42, 62) of the tape body (23). Core string portions (24, 24a, 24b, 54a, 54b, 64) swelling in the front and back directions from the tape body (23), and
The core string portion (24, 24a, 24b, 54a, 54b, 64) has a string member (25, 25a, 25b) that has a tape length on the tape side edge (22, 32, 42, 62) by sewing. Formed by being fixed along the direction,
The string member (25, 25a, 25b) includes at least one thread (26, 56, 57, 67) used for the sewing machine without the needle thread (26, 56, 66) of the sewing machine being pierced. , 68) intersect while contacting the outer peripheral surface of the cord member (25, 25a, 25b) opposite to the inner peripheral surface that is in contact with the tape body (23), so that the tape side edge portion (22, 32,42,62)
The fastener element (15) includes a part of the core string (24, 24a, 24b, 54a, 54b, 64) and at least one of the threads (26, 56, 57, 67, 67) used for the sewing machine. 68) and attached to the tape member (20, 30, 40, 50, 60) so as to cover a part of the tape member.
A slide fastener, characterized in that:   The slide fastener according to claim 1, wherein the string member (25, 25a, 25b) is fixed only by the needle thread (26), and is formed thicker than the needle thread (26). The tape side edge (22, 32, 42) is disposed opposite to the first tape surface on which the needle thread (26) runs and the first tape surface, and the needle thread (26) is A second tape surface that pierces the edge (22, 32, 42) to form a loop;
The string member (25, 25a, 25b) is such that the needle thread (26) intersects the outer peripheral surface of the string member (25, 25a, 25b) twice in each stitch, thereby forming the tape side edge portion. (22, 32, 42) fixed to the second tape surface,
The slide fastener according to claim 2. The string member (25, 25a, 25b) is formed by a stitch of a lockstitch that is formed by using the needle thread (56) and the bobbin thread (57) to be bent in a zigzag shape in the tape length direction. Fixed,
The tape side edge portions (22, 32, 42) are disposed opposite to the first tape surface on which the needle thread (56) runs, and the first tape surface on which the bobbin thread (57) runs. With two tape surfaces,
The string member (25, 25a, 25b) is inserted between the needle thread (56) and the first tape surface or between the bobbin thread (57) and the second tape surface, The needle thread (56) or the bobbin thread (57) intersects the outer peripheral surface of the string member (25, 25a, 25b) in a zigzag manner, thereby forming the tape side edge (22, 32, 42). Become fixed,
The slide fastener according to claim 1. The string member (25) is fixed by an overlock stitch formed using the needle thread (66) and one or two looper threads (67, 68),
The tape side edge (62) is disposed opposite to the first tape surface on which the needle thread (66) runs, and opposite to the first tape surface, and the needle thread (66) is disposed on the tape side edge (62). ) To form a loop by piercing
The string member (25) is inserted between the looper thread (67, 68) and the first or second tape surface, and the looper thread (67, 68) is inserted into the string member ( 25) is fixed to the tape side edge (62) by crossing the outer peripheral surface of
The slide fastener according to claim 1. The string member (25, 25a, 25b) has a first string member (25a) and a second string member (25b) arranged parallel to one tape surface on the tape side edge (22). And
The tape side edge portion (22) includes a first tape fixing portion (22a) to which the first string member (25a) is fixed, and a second tape fixing portion (22) to which the second string member (25b) is fixed. 22c) having
The second tape fixing portion (22c) is formed by folding back the first tape fixing portion (22a) on the other tape surface of the first tape fixing portion (22a).
The slide fastener according to claim 1.   The first tape fixing portion (22a) and the folded-back second tape fixing portion (22c) are located at a position inside the tape from the first and second string members (25a, 25b). 7. The slide fastener according to claim 6, wherein the slide fasteners are sewn together by a tape sewing line (29) formed along the two string members (25a, 25b). The tape side edge portion (32, 62) is provided with a tape fixing portion (32a) for fixing the string member (25) to one tape surface, and the tape fixing portion (32a ) And a tape fold portion (32c) that folds back to the other tape surface of
The tape wrapping portion (32c) is formed by performing the sewing operation for fixing the string member (25) in a state where the tape wrapping portion (32c) is wrapped and overlapped with the tape fixing portion (32a). , Sewn together with the string member (25) to the tape fixing portion (32a),
The slide fastener according to claim 1. The tape side edge (42) has a tape covering portion (42a) that wraps around and covers the inside of the string member (25) when viewing a cross section orthogonal to the length direction of the tape member (40). A first adjacent portion (42b) disposed adjacent to one of the tape covering portions (42a), and a second adjacent portion (42c) disposed adjacent to the other of the tape covering portions (42a). Has,
In a state where the string member (25) is wrapped by the tape covering portion (42a), the first adjacent portion (42b) and the second adjacent portion (42c) move along the string member (25). It is sewn together by the formed tape sewing line (29),
The slide fastener according to claim 1.

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