Slide fastener and method for manufacturing fastener stringer

Abstract

At least one of the core sections (6, 6 ') includes a first alternating arrangement section (63, 63') in which first portions (61, 61 ') to which the fastener elements (4, 4') are attached and second portions (62, 62 ') extending between the fastener elements (4, 4') adjacent to each other in the longitudinal direction of the fastener tape (3, 3 ') are alternately arranged. The core part (6, 6 ') comprises more than one water-soluble yarn (7), the second part (62, 62') has a structure with flexibility higher than that of the first part (61, 61 ') according to the dissolution of more than one water-soluble yarn (7) in the second part (62, 62'), and additionally or alternatively, the tissues (10, 10 ') for fixing the core part (6, 6') also have the same characteristics.

Description

Technical Field

[0001] This disclosure relates to a method of manufacturing a zipper and zipper teeth. Background Technology

[0002] Patent document 1 discloses zipper teeth that are shaped in a manner that reduces slippage of the zipper pull.

[0003] Patent document 2 discloses the following: a water-soluble yarn is introduced into the side edge of the zipper tape, and a warp yarn removal area is formed by its dissolution. Then, the legs of the zipper teeth made of synthetic resin are passed through this removal area to form (see this document). Figure 1 , 2 ). Existing technical documents Patent documents

[0004] Patent Document 1: Japanese Patent No. 6891272 Patent Document 2: Japanese Patent No. 4312676 Summary of the Invention

[0005] When a core is incorporated into the side edge of a zipper tape, the number of yarns or the yarn density in the core may be increased to enhance its rigidity. This increases the mounting strength of the zipper teeth to the side edge of the zipper tape, thereby improving the zipper's tensile strength. However, it also reduces the zipper tape's flexibility, restricting the freer movement of the zipper teeth and resulting in heavier sliding of the zipper pull. The same applies to the structure of the zipper tape used to secure the core. Thus, the increased mounting strength of the zipper teeth to the side edge of the zipper tape and the improved sliding of the zipper pull (i.e., the ability to open and close the zipper with less force) are contradictory, limiting the options for the number of yarns or the yarn density introduced into the core.

[0006] One aspect of the zipper disclosed herein includes: a pair of zipper teeth, each comprising a zipper tape and a plurality of zipper teeth mounted on a side edge relative to the elongated dimension of the zipper tape; and at least one zipper pull mounted relative to the pair of zipper teeth and movable to engage and disengage the zipper teeth of the pair of zipper teeth. In each of the pair of zipper teeth, the side edge of the zipper tape includes at least one core extending along the length direction of the zipper tape and a retaining mechanism for the at least one core. The at least one core includes a first alternating arrangement portion, which alternately comprises a first portion on which zipper teeth are mounted and a second portion extending between adjacent zipper teeth in the length direction of the zipper tape. The retaining mechanism includes a second alternating arrangement portion, which alternately comprises a first region and a second region, the first region being located on the outer periphery of the first portion of the at least one core, and the second region being located on the outer periphery of the second portion of the at least one core. The following conditions (i) and (ii) are met: (i) at least one core contains one or more water-soluble yarns, corresponding to the dissolution of one or more water-soluble yarns in the second part, the second part has a structure with higher softness than the first part; and (ii) the structure contains one or more water-soluble yarns, corresponding to the dissolution of one or more water-soluble yarns in the second region, the second region has a structure with higher softness than the first region.

[0007] The manufacturing method of the zipper toothed belt according to other embodiments of this disclosure includes the following steps: a step of manufacturing a zipper belt with at least one core fixed to the side edge of its elongated dimension by a fixing structure, wherein at least one of the core and the structure comprises one or more water-soluble yarns; a step of manufacturing a zipper toothed belt by installing a plurality of zipper teeth relative to the at least one core, wherein in this step, the at least one core includes a first alternating arrangement of a first part and a second part, the first part being the part on which the zipper teeth are installed, and the second part being the part extending between adjacent zipper teeth in the length direction of the zipper belt, and... The process involves organizing a second alternating configuration section, which alternately comprises a first region and a second region, the first region being located on the outer periphery of a first portion of at least one core, and the second region being located on the outer periphery of a second portion of at least one core; and exposing the zipper teeth to hot water or high-temperature steam for dissolving water-soluble yarn, thereby partially dissolving one or more water-soluble yarns, while maintaining the zipper teeth installed in the first portion and the first region, and making the second portion a structure with higher softness than the first portion, and / or making the second region a structure with higher softness than the first region.

[0008] Regarding the above-described solutions or other solutions of this disclosure, the following features can be applied individually or in any combination. Water-soluble yarns can be made from materials that dissolve in hot water or high-temperature steam, and in some cases, comprise a material or any combination thereof selected from the group consisting of water-soluble polyvinyl alcohol (PVA) synthetic fibers, alkali-soluble copolyester yarns, and polylactic acid yarns.

[0009] In several embodiments, the total area of ​​all yarns in the second portion of a cross-section orthogonal to the length direction of the zipper tape is less than the total area of ​​all yarns in the first portion of a cross-section orthogonal to the length direction of the zipper tape. Alternatively or additionally, the total area of ​​all yarns in the second region of a cross-section orthogonal to the length direction of the zipper tape is less than the total area of ​​all yarns in the first region of a cross-section orthogonal to the length direction of the zipper tape.

[0010] In several embodiments, the total area of ​​all yarns in the second portion of the cross-section orthogonal to the length direction of the zipper tape is 9 / 10 or less or 4 / 5 or less of the total area of ​​all yarns in the first portion of the cross-section orthogonal to the length direction of the zipper tape. Alternatively or additionally, the total area of ​​all yarns in the second region of the cross-section orthogonal to the length direction of the zipper tape is 9 / 10 or less or 4 / 5 or less of the total area of ​​all yarns in the first region of the cross-section orthogonal to the length direction of the zipper tape.

[0011] In several embodiments, the total area of ​​all yarns in the second portion of the cross-section orthogonal to the length direction of the zipper tape is more than 1 / 3, 1 / 2, 2 / 3, or 3 / 4 of the total area of ​​all yarns in the first portion of the cross-section orthogonal to the length direction of the zipper tape. Alternatively, the total area of ​​all yarns in the second region of the cross-section orthogonal to the length direction of the zipper tape is more than 1 / 3, 1 / 2, 2 / 3, or 3 / 4 of the total area of ​​all yarns in the first region of the cross-section orthogonal to the length direction of the zipper tape.

[0012] In several embodiments, one or more water-soluble yarns extend within the range of the first alternating arrangement section, and compared with the yarn diameter or yarn width of one or more water-soluble yarns in the first part, one or more water-soluble yarns have a smaller yarn diameter or yarn width in the second part.

[0013] In several embodiments, at least one core portion comprises multiple water-soluble yarns as one or more water-soluble yarns, the multiple water-soluble yarns including one or more water-soluble yarns joined or fused to other yarns in the second portion.

[0014] In several embodiments, at least one core portion further includes one or more non-water-soluble yarns, which have a substantially fixed yarn diameter or yarn width in the first alternating configuration portion.

[0015] In some embodiments, the number of water-soluble yarns in the second part is less than the number of water-soluble yarns in the first part.

[0016] In several embodiments, the fabric is a pocket section of the zipper tape, with the core inserted into the pocket section of the zipper tape. Alternatively, the fabric includes multiple yarn portions for securing the core, the core being woven or knitted into the fabric of the zipper tape through the multiple yarn portions.

[0017] In several embodiments, the core comprises a plurality of core yarns and a plurality of outer wrapping yarns disposed around the plurality of core yarns.

[0018] In several embodiments, the multiple core yarns comprise at least one water-soluble yarn and / or at least one non-water-soluble yarn of more than one water-soluble yarn.

[0019] In several embodiments, the multiple outer yarns include at least one water-soluble yarn and / or at least one non-water-soluble yarn of more than one water-soluble yarn. Invention Effects

[0020] According to one aspect of this disclosure, a technique is provided that simultaneously improves the mounting strength of the zipper teeth towards the side edge of the zipper tape and reduces the slippage of the zipper pull. Alternatively, a technique is provided to alleviate the limitations on the selection versatility of the number of yarns or the yarn density in the core. Attached Figure Description

[0021] Figure 1 This is a schematic front view of a zipper as disclosed herein. Figure 2 This is a schematic perspective view of a zipper belt, showing a state in which multiple zipper teeth are installed in the core relative to the first side edge of the zipper belt. Figure 3 This is a schematic diagram showing the general structure of the first side edge of the zipper tape, illustrating the state in which the core portion of the first side edge is inserted into the pocket fabric portion of the zipper tape. Figure 4 This is a schematic diagram showing the general structure of the first side edge of the zipper tape, illustrating the state in which a pair of cores are woven into the zipper tape structure through bead weaving. Figure 5 It is a rough 3D diagram of zipper teeth. Figure 6 This is a diagram showing the engagement state of the left and right zipper teeth. Figure 7This is a schematic diagram of the cross-section of the zipper teeth in a section orthogonal to the length direction of the zipper tape, schematically showing the cross-sectional structure of the first part of the core. Figure 8 It is a schematic diagram of the zipper teeth in a cross section orthogonal to the length direction of the zipper tape, schematically showing the cross-sectional structure of the second part of the core. Figure 9 This is a schematic diagram of the zipper teeth in a cross-section parallel to the length of the zipper tape, schematically showing that the first and second parts in the core have the same thickness. Figure 10 This is a schematic cross-sectional view of the zipper teeth in a section parallel to the length of the zipper tape, illustrating that the second part has a larger volume in the core compared to the first part. Figure 11 This is a schematic cross-sectional view of the zipper teeth in a section parallel to the length direction of the zipper tape, schematically showing the situation where the second part shrinks in the core compared to the first part. Figure 12 This is a schematic diagram of the cross-section of the zipper teeth in a section orthogonal to the length direction of the zipper tape, schematically showing the cross-sectional structure of the first part of the core. Figure 13 This is a schematic diagram of the cross-section of the zipper teeth in a section orthogonal to the length direction of the zipper tape, schematically showing the cross-sectional structure of the second part of the core. Figure 14 This is a schematic diagram showing a general cross-sectional structure of the core. Figure 15 This is a general front view of other types of zippers. Detailed Implementation

[0022] The following is a reference to the appendix. Figure 1 Various embodiments and features are described below. Those skilled in the art will be able to combine the various embodiments and / or features without excessive explanation, and will also understand the synergistic effects obtained from such combinations. Repeated descriptions between embodiments are omitted in principle. The accompanying drawings are used primarily for the purpose of describing the invention, and have been simplified for ease of drawing. The features are not only effective for the manufacturing methods of zippers and zipper teeth disclosed in this application, but can be understood as general features applicable to various other manufacturing methods of zippers and zipper teeth not disclosed in this specification.

[0023] Regarding zipper 1, the movement direction of the zipper pull 5 is consistent with the front-to-back direction. One direction orthogonal to the movement direction of the zipper pull 5 is the left-to-right direction, parallel to the zipper tapes 3, 3' (or the tape surface defining their thickness). Another direction orthogonal to the movement direction of the zipper pull 5 is the up-down direction, orthogonal to the zipper tapes 3, 3' (or the tape surface defining their thickness). The front-to-back, left-to-right, and up-down directions can be alternatively referred to as the length direction, width direction, and thickness direction, respectively. Other methods can also be used to define the directions with reference to this disclosure.

[0024] First, refer to Figure 1 and Figure 2 The zipper 1 has a pair of left and right zipper teeth 2 and at least one zipper head 5 mounted relative to the pair of left and right zipper teeth 2, 2'. Each zipper tooth 2 includes zipper strips 3, 3' and a plurality of zipper teeth 4, 4' mounted on a first side edge 31, 31' of the elongated dimension of the zipper strips 3, 3'. In order to achieve engagement and disengagement of the zipper teeth 4, 4' of the pair of left and right zipper tooth 2, 2', the zipper head 5 is movable (e.g., along the center line FC of the zipper 1). The zipper 1, zipper tooth 2, 2' and zipper strips 3, 3' are elongated in a predetermined direction along the center line FC, specifically in the front-back direction. As the zipper head 5 moves forward, the left and right zipper teeth 4, 4' engage, resulting in the left and right zipper tooth 2, 2' engaging (within a range behind the zipper head 5). As the zipper pull 5 moves backward, the engagement of the left and right zipper teeth 4 and 4' is released, resulting in the disengagement of the engagement of the left and right zipper teeth 2 and 2' (within the area in front of the zipper pull 5).

[0025] Zipper tapes 3 and 3' are highly flexible tapes extending in a specified direction with a specified width. Specifically, they include: first side edges 31 and 31' and second side edges 32 and 32' extending parallel to a specified direction (i.e., the front-to-back direction) along the centerline FC to define the width of the zipper tapes 3 and 3'; and a main tape portion 33 and 33' between the first side edges 31 and 31' and the second side edges 32 and 32'. In some cases, the first side edges 31 and 31' are first ears for mounting zipper teeth 4 and 4' on the zipper tapes 3 and 3', and the second side edges 32 and 32' are second ears for the zipper tapes 3 and 3' without mounting zipper teeth 4 and 4'. The ears can have a different structure than the main tape portion (e.g., a different woven or knitted structure). The zipper tapes 3 and 3' can have a woven structure composed of multiple warp yarns and at least one weft yarn. Zipper tapes 3 and 3' are not limited to woven structures; they can also have knitted structures.

[0026] The first side edges 31, 31' of the zipper tapes 3, 3' include at least one core 6, 6' extending along the length direction of the zipper tapes 3, 3' and at least one fastening mechanism 10, 10' for securing the core 6, 6' (see reference). Figure 2 At least one of the core portions 6 and 6' and the weaves 10 and 10' includes one or more water-soluble yarns 7, and alternatively includes one or more non-water-soluble yarns 8. This will be described later. Furthermore, the weaves 10 and 10' are composed of one or more fixed yarns. Preferably, the fixed yarn is the ground yarn of the zipper tape 3 and 3'. Additionally, the core portions 6 and 6' form one or two protrusions 6a and 6b that protrude upwards or downwards on one or both sides compared to the tape body portions 33 and 33'. Specifically, the tape body portion 33 has tape surfaces 33a and 33b that define its thickness. The core portion 6 has a protrusion 6a protruding from the tape surface 33a of the tape body portion 33, and a protrusion 6b protruding from the tape surface 33b of the tape body portion 33 (towards the side opposite to the protrusion 6a). The protrusion height of the protrusion 6a and the protrusion height of the protrusion 6b are generally approximately equal, but not necessarily limited to this.

[0027] The core portions 6 and 6' include first alternating portions 63 and 63', which are alternately arranged with first parts 61 and 61' and second parts 62 and 62' along the length of the zipper tapes 3 and 3' (see reference). Figure 2 Parts 61 and 61' are the portions where zipper teeth 4 and 4' are installed, and parts 62 and 62' are the portions extending between adjacent zipper teeth 4 and 4' along the length of zipper tapes 3 and 3'. Furthermore, parts 61 and 61' do not need to be in direct contact with zipper teeth 4 and 4'. Typically, the length of parts 61 and 61' along the length of zipper tapes 3 and 3' is equal to or slightly shorter than the length of parts 62 and 62' along the length of zipper tapes 3 and 3'.

[0028] The core portions 6, 6' have end portions 64, 64' that extend between the zipper teeth 4, 4' located at the end in the length direction of the zipper tapes 3, 3' and the end of the zipper tapes 3, 3'. Stoppers 9, 9' made of the same or different material as the zipper teeth 4, 4' are installed on the end portions 64, 64' (see reference). Figure 1 The end portions 64, 64' can include the mounted portions of the mounting stops 9, 9' and the non-mounted portions (extending between the stops 9, 9' and the zipper teeth 4, 4') that do not mount the stops 9, 9', respectively, which can perform the same function as the first portions 61, 61' and the second portions 62, 62' (this will be clarified from the following description). The zipper teeth 4, 4' and the stops 9, 9' can also be collectively referred to as "mounting components".

[0029] Organizations 10 and 10' include second alternating configuration portions 13 and 13', which are alternately configured with first regions 11 and 11' on the outer periphery of the first portions 61 and 61' of the core portions 6 and 6' and second regions 12 and 12' on the outer periphery of the second portions 62 and 62' of the core portions 6 and 6'. The first regions 11 and 11' of organizations 10 and 10' are also covered by zipper teeth 4 and 4'. The second regions 12 and 12' of organizations 10 and 10' are also portions extending between adjacent zipper teeth 4 and 4' in the length direction of the zipper tapes 3 and 3', and are exposed between adjacent zipper teeth 4 and 4'. Organizations 10 and 10' have structures that vary depending on the fixed configuration of the core portions 6 and 6' at the first side edges 31 and 31' of the zipper tapes 3 and 3'. When the cores 6 and 6' are inserted into the pocket weave 35 and 35' of the zipper tapes 3 and 3' (refer to...) Figure 3 The woven portions 35, 35' of the bag conform to or form the fixing structures 10, 10' of the core portions 6, 6'. On the other hand, when the core portions 6, 6' are woven into the first side edge portions 31, 31' of the zipper tapes 3, 3' by bead weaving (see...) Figure 4 The multiple weft yarn portions 37 of the weft yarns 36 of the zipper tapes 3, 3' that intersect with the cores 6, 6' conform to, or form with, the fixing structures 10, 10' of the cores 6, 6'. When the warp yarns are inserted in a manner overlapping with the cores 6, 6', the structures 10, 10' can also include the warp yarns. Other structures of the structures 10, 10' can also be used.

[0030] exist Figure 2 In the diagram, cores 6 and 6' are shown in roughly circular cross-sectional views, but this is merely a schematic diagram to aid the reader's understanding. The specific structure of cores 6 and 6' is not specifically defined. Figure 3 In the illustrated configuration, the cores 6 and 6' are inserted into the pocket weave portion 35 and 35' of the zipper tape 3 and 3' formed at the first side edge portion 31 and 31' of the zipper tape 3 and 3'. That is, the cores 6 and 6' are fixed to the zipper tape 3 and 3' by the ground yarn of the ground weave. Water-soluble yarn can also be used as this fixing yarn. The cores 6 and 6' contain multiple yarns inserted into the pocket weave portion 35 and 35'; in the illustrated example, this includes multiple core yarns 66 and multiple outer covering yarns 65 arranged around them. A tube portion 67 is formed by the knitted (or woven) structure of the multiple outer covering yarns 65, and the multiple core yarns 66 are inserted into the tube portion 67. Of course, the cores can also have other structures.

[0031] The cores 6 and 6' are covered by the woven portions 35 and 35' along the length of the zipper tapes 3 and 3' and are not exposed to the outside, but the alternating arrangement of the first portions 61 and 61' and the second portions 62 and 62' described above remains unchanged. Furthermore, the zipper teeth 4 and 4' do not directly contact the first portions 61 and 61' of the cores 6 and 6', with the woven portion 35 and 35' sandwiched between them, but the zipper teeth 4 and 4' are installed on the first portions 61 and 61' of the cores 6 and 6', which are also unchanged. For the sake of clarity, the woven portions 35 and 35' include a second alternating arrangement of portions 13 and 13', where the first regions 11 and 11' and the second regions 12 and 12' are alternately arranged.

[0032] exist Figure 4 In the illustrated configuration, the cores 6, 6' are fixed to the zipper tapes 3, 3' by the ground yarn of the ground weave. Water-soluble yarn can also be used as this ground yarn. Specifically, the cores 6, 6' are woven or knitted to the zipper tapes 3, 3' by the ground yarn (fixing yarn) contained in the ground weave of the zipper tapes 3, 3'. Water-soluble yarn can also be used for the ground yarn (fixing yarn). In some cases, as shown in the example, the cores 6, 6' are woven to the zipper tapes 3, 3' as warp yarns 6c, 6d and by bead weaving. When the zipper tapes 3, 3' have a knitted structure instead of a woven structure, the cores 6, 6' are knitted to the zipper tapes 3, 3' as a wale. Although two warp yarns 6c, 6d are shown, they can also be a single warp yarn. Regarding a non-limiting example of the structure of the cores 6, 6', see... Figure 3 The structures described are identical, with core sections 6 and 6' comprising multiple core yarns 66 and multiple outer wrapping yarns 65 arranged around them. A tube section 67 is formed by a knitted (or woven) structure of the multiple outer wrapping yarns 65, within which the multiple core yarns 66 are inserted. Of course, the core sections can also have other structures. For example, a twisted rope composed of multiple yarns can be used as the core sections 6 and 6'.

[0033] The cores 6 and 6' are partially covered by the weft yarns of the zipper tapes 3 and 3', but mainly for securing them to the zipper tapes 3 and 3', leaving the remaining portions exposed. Regardless of the exposure pattern of the cores 6 and 6', the alternating arrangement of the first portion 61 and 61' and the second portion 62 and 62' in the cores 6 and 6' remains unchanged. Furthermore, the zipper tapes 3 and 3' (specifically, their weave) include a second alternating arrangement of the first region 11 and 11' and the second region 12 and 12'. When the zipper tapes 3 and 3' are knitted, the cores 6 and 6' can be partially covered by satin yarn, tricot warp-knitted yarn, transverse insert yarn, or any combination thereof. Other introduction patterns of the cores 6 and 6' towards the first side edge portion 31 and 31' are also possible.

[0034] The zipper teeth 4, 4' are arranged at a predetermined interval relative to the first side edges 31, 31' of the zipper tape 3, 3' in the longitudinal direction. A gap is formed between adjacent zipper teeth 4, 4' in the longitudinal direction of the zipper tape 3, 3' for engaging the opposing zipper teeth 4, 4'. There are no limitations on the material of the zipper teeth 4, 4'; typically, they are made of metal or resin.

[0035] like Figure 5 As shown, the zipper teeth 4, 4' have a head 41 and a pair of legs 42, 43 connected to the head 41. A first side edge 31, 31' of the zipper tape 3, 3' and a core 6, 6' are disposed between the pair of legs 42, 43. When the zipper teeth 4, 4' are made of metal, the pair of legs 42, 43 are pressed together by clamping the first side edge 31, 31' and the core 6, 6'. When the zipper teeth 4, 4' are made of resin, the head 41 and legs 42, 43 of the zipper teeth 4, 4' are fixed to the first side edge 31, 31' and the core 6, 6'. In either case, the mounting strength of the zipper teeth 4, 4' relative to the first side edge 31, 31' is increased due to the core 6, 6'.

[0036] Figure 6 The engagement state of the left and right zipper teeth 4, 4' is schematically shown. The head 41 has an engagement protrusion 41a and an engagement recess 41b. The engagement protrusion 41a protrudes forward, and the engagement recess 41b is recessed forward. As shown in a partial cross-section in this figure, the engagement protrusion 41a of the left zipper tooth 4 is gently engaged with the engagement recess 41b of the right zipper tooth 4'. This engagement of the left and right zipper teeth 4, 4' occurs continuously in the front-back direction to achieve the engagement of the left and right zipper tooth chains 2, 2'. It is also conceivable that the left and right zipper teeth 4, 4' have other engagement structures and engage in a different manner than shown in the figure. For example, the head 41 could also have a pair of engagement protrusions protruding in opposite directions in the front-back direction. The engagement process of the left and right zipper teeth 4, 4' within the zipper head 5 is not described in detail, but will be naturally understood by those skilled in the art.

[0037] When the zipper teeth 4 and 4' are metal, they are pressed and installed onto the first portion 61 and 61' of the core 6 and 6' of the first side edge 31 and 31'. Therefore, the first portion 61 and 61' can be at least partially compressed (typically, in the vertical and / or horizontal directions). On the other hand, the second portion 62 and 62' of the core 6 and 6' is not compressed because it does not have the zipper teeth 4 and 4' installed thereon. However, since the zipper teeth 4 and 4' are installed at a narrow spacing onto the first portion 61 and 61', the second portion 62 and 62' can also be indirectly compressed.

[0038] When the zipper teeth 4 and 4' are made of resin, during the injection molding of the zipper teeth 4 and 4', the first portions 61 and 61' of the cores 6 and 6' can be compressed by the pressure of the molten resin. On the other hand, the second portions 62 and 62' of the cores 6 and 6' are not exposed to the molten resin during the injection molding of the zipper teeth 4 and 4', and are not directly subjected to pressure from the molten resin. Therefore, there can be a difference in the degree of compression between the first portions 61 and 61' and the second portions 62 and 62'. The material of the zipper teeth 4 and 4' is not limited to the materials described above, and may also include zipper teeth that contain at least a portion of ceramic material.

[0039] As described above, the cores 6 and 6' contain one or more water-soluble yarns 7, typically including multiple yarns including one or more water-soluble yarns 7. By exposing (e.g., immersing) the zipper teeth 2 and 2' to hot water or high-temperature steam capable of dissolving the water-soluble yarns 7, the water-soluble yarns 7 are partially dissolved, thereby improving the softness of the second part 62 and 62' compared to the first part 61 and 61' while maintaining the state of the zipper teeth 4 and 4' installed in the first part 61 and 61' and the first region 11 and 11'. As an addition or alternative to the above, the weave 10 and 10' may contain one or more water-soluble yarns 7. For example, one or more ground yarns (fixing yarns) of the pocket weave may be water-soluble yarns. Alternatively, the ground yarns (fixing yarns) of the zipper tapes 3 and 3' that intersect with the cores 6 and 6' in order to achieve weaving or knitting of the weave of the zipper tapes 3 and 3' may be water-soluble yarns. Even under such circumstances, by exposing the zipper teeth 2, 2' to (e.g., immersing in) hot water or a solution capable of dissolving the water-soluble yarn 7, thereby partially dissolving the water-soluble yarn 7, it is possible to improve the softness of the second region 12, 12' compared to the first region 11, 11' while maintaining the state in which the zipper teeth 4, 4' are installed in the first part 61, 61' and the first region 11, 11'.

[0040] More specifically, by immersing the zipper teeth 2, 2' in hot water or a solution, the water-soluble yarn 7 dissolves more preferentially in the second portion 62, 62' and / or the second region 12, 12' not covered by the zipper teeth 4, 4' compared to the first portion 61, 61' and / or the first region 11, 11' covered by the zipper teeth 4, 4'. As a result, the softness of the second portion 62, 62' is improved compared to the first portion 61, 61', and / or the softness of the second region 12, 12' is improved compared to the first region 11, 11'.

[0041] Hot water can be acidic, neutral, or alkaline, typically neutral or weakly alkaline. Additives and / or other types of additives (such as pH adjusters) to promote the dissolution of water-soluble yarns can also be added to the hot water.

[0042] In this embodiment, corresponding to the dissolution of the water-soluble yarn 7 in the second parts 62, 62', the second parts 62, 62' have a structure with higher softness than the first parts 61, 61'. Thus, while maintaining the stiffness of the first parts 61, 61', the softness of the second parts 62, 62' is improved. As a result, the installation strength of the zipper teeth 4, 4' toward the first side edge 31, 31' of the zipper tape 3, 3' and the sliding of the zipper pull 5 are both improved. Additionally or alternatively, the limitation on the selection range of the number of yarns or the yarn density of the core parts 6, 6' is alleviated. The structure with high softness can accommodate cases where the water-soluble yarn is finer and / or where the number of water-soluble yarns is less.

[0043] As an addition or alternative to the aforementioned features, corresponding to the dissolution of the water-soluble yarn 7 in the second regions 12, 12' of the structures 10, 10', the second regions 12, 12' have a structure with higher softness than the first regions 11, 11'. Thus, while maintaining the stiffness of the first regions 11, 11', the softness of the second regions 12, 12' is improved. As a result, this simultaneously promotes improved mounting strength of the zipper teeth 4, 4' to the first side edges 31, 31' of the zipper tape 3, 3' and improved sliding of the zipper pull 5. The structure with high softness can accommodate cases where the water-soluble yarn is finer and / or has fewer strands of water-soluble yarn.

[0044] In some cases, the total area of ​​all yarns in the second portion 62, 62' of the cross-section orthogonal to the length direction of zipper tapes 3, 3' is less than the total area of ​​all yarns in the first portion 61, 61' of the cross-section orthogonal to the length direction of zipper tapes 3, 3'. The total area of ​​all yarns in the second portion 62, 62' of the cross-section orthogonal to the length direction of zipper tapes 3, 3' can be calculated by adding the areas of all the constituent yarns of the second portion 62, 62' of the cross-section. Similarly, the total area of ​​all yarns in the first portion 61, 61' of the cross-section orthogonal to the length direction of zipper tapes 3, 3' can be calculated by adding the areas of all the constituent yarns of the first portion 61, 61' of the cross-section. To achieve this, a cross-sectional photograph of zipper tapes 3, 3' can be used (optionally, for image processing using a computer). The above aspects also apply to the total area of ​​all yarns in the second region 12, 12' of the weave 10, 10' in the cross section orthogonal to the length direction of the zipper tapes 3, 3' and the total area of ​​all yarns in the first region 11, 11' in the cross section orthogonal to the length direction of the zipper tapes 3, 3'.

[0045] In some cases, the total area of ​​all yarns in the second portion 62, 62' of the cross section orthogonal to the length direction of the zipper tapes 3, 3' is less than 9 / 10 or less than 4 / 5 (and / or more than 1 / 3, 1 / 2, 2 / 3, or 3 / 4) of the total area of ​​all yarns in the first portion 61, 61' of the cross section orthogonal to the length direction of the zipper tapes 3, 3'. This promotes an improvement in the installation strength of the zipper teeth 4, 4' toward the first side edge 31, 31' of the zipper tapes 3, 3' and an improvement in the sliding of the zipper pull 5. The above aspects also apply to the total area of ​​all yarns in the second region 12, 12' of the weave 10, 10' in the cross section orthogonal to the length direction of the zipper tapes 3, 3' and the total area of ​​all yarns in the first region 11, 11' of the cross section orthogonal to the length direction of the zipper tapes 3, 3'.

[0046] As an addition or substitution to the feature relating to the total area of ​​all yarns between the first and second portions described above, the mass per unit length of the second portion 62, 62' in the length direction of the zipper tapes 3, 3' is less than the mass per unit length of the first portion 61, 61' in the length direction of the zipper tapes 3, 3'. In some cases, the mass per unit length of the second portion 62, 62' in the length direction of the zipper tapes 3, 3' can be less than 9 / 10 or less than 4 / 5 (and / or more than 1 / 3, 1 / 2, 2 / 3, or 3 / 4) of the mass per unit length of the first portion 61, 61' in the length direction of the zipper tapes 3, 3'. This results in or promotes the same effect as described above.

[0047] The use of water-soluble yarn 7 expands the range of options for the number of yarns or yarn density in the core. For example, by increasing the total number of yarns in the cores 6 and 6', which include both water-soluble yarn 7 and non-water-soluble yarn 8, the stiffness of the first parts 61 and 61' is improved. While the stiffness of the second parts 62 and 62' is also improved in the same way, the softness of the second parts 62 and 62' can be improved by selectively dissolving the water-soluble yarn in hot water or the like in the second parts 62 and 62'.

[0048] Figure 7 This is a schematic diagram of the cross-section of the zipper teeth 2 and 2' in a section orthogonal to the length direction of the zipper strips 3 and 3', showing the cross-sectional structure of the first part 61 and 61' of the core 6 and 6'. Figure 8 This is a schematic diagram of the cross-section of the zipper teeth 2 and 2' in a section orthogonal to the length direction of the zipper strips 3 and 3', showing the cross-sectional structure of the second part 62 and 62' of the core 6 and 6'.

[0049] Cores 6 and 6' can contain multiple water-soluble yarns 7 and multiple non-water-soluble yarns 8 (see reference) Figure 7 and Figure 8 By incorporating water-soluble yarn 7 into the cores 6 and 6', the cores 6 and 6' are selectively softened according to their position before and after the zipper teeth 2 and 2' are immersed in hot water.

[0050] Before immersing the zipper teeth 2, 2' in hot water, the water-soluble yarn 7 and the non-water-soluble yarn 8 extend uniformly within the first alternating arrangement portion 63, 63' (the entire area thereof) along the length direction of the zipper teeth 3, 3'. The water-soluble yarn 7 and the non-water-soluble yarn 8 can have a substantially fixed yarn diameter or yarn width within the first alternating arrangement portion 63, 63'.

[0051] When the zipper teeth 2, 2' are immersed in hot water, the water-soluble yarn 7 of the second portion 62, 62' of the core 6, 6' dissolves in the hot water at a faster rate than the water-soluble yarn 7 of the first portion 61, 61' of the core 6, 6'. As a result, the water-soluble yarn 7 in the second portion 62, 62' of the core 6, 6' becomes finer, and has a smaller yarn diameter or width compared to the yarn diameter or width of the water-soluble yarn 7 in the first portion 61, 61'. On the other hand, the first portion 61, 61' of the core 6, 6' is protected from contact with hot water by the zipper teeth 4, 4', and therefore the water-soluble yarn 7 does not become as fine. Thus, the characteristic related to the total area of ​​all yarns between the first and second portions is realized. The same applies to the case where water-soluble yarn 7 is contained in structures 10 and 10'. Compared with the yarn diameter or yarn width of water-soluble yarn 7 in the first region 11 and 11', water-soluble yarn 7 can have a smaller yarn diameter or yarn width in the second region 12 and 12'.

[0052] Furthermore, the hot water has a temperature higher than the dissolution temperature of the water-soluble yarn 7 (e.g., 80°C, 85°C, or 95°C or higher). Additionally, to achieve the above objectives, the time for immersing the zipper teeth 2, 2' in the hot water is appropriately set to maintain the zipper teeth 4, 4' in the first part 61, 61', preventing them from detaching from the first part 61, 61'. Suitablely, when the zipper teeth 2, 2' are exposed to (e.g., immersed in) hot water, the pull-out strength of the zipper teeth 4, 4' in the dried state is 60N or higher. Unlike the water-soluble yarn 7, the non-water-soluble yarn 8 can have a substantially fixed yarn diameter or yarn width within the alternating arrangement portions 63, 63', regardless of whether the zipper teeth 2, 2' are immersed in hot water.

[0053] It is also conceivable that, depending on the soaking time of the water-soluble yarn 7 in hot water, or the yarn diameter or width of the water-soluble yarn 7, at least one strand of water-soluble yarn 7 will completely dissolve in the hot water in the second part 62, 62' of the core 6, 6'. In this case, the number of strands of water-soluble yarn 7 remaining in the second part 62, 62' will be less than the number of strands of water-soluble yarn in the first part 61, 61'.

[0054] The inclusion of a non-water-soluble yarn 8 in addition to the water-soluble yarn 7 in the cores 6 and 6' is also technically significant, as it facilitates the acquisition of the necessary strength and softness in the cores 6 and 6'. The non-water-soluble yarn 8 will not dissolve even when immersed in hot water at a temperature above the melting temperature of the water-soluble yarn 7 (e.g., 80°C, 85°C, or 95°C or higher). In the case where the non-water-soluble yarn 8 is made of thermoplastic resin, it will melt if heated to the melting temperature of that thermoplastic resin (e.g., 200°C or higher in the case of polyester), but as described above, it will not dissolve even when immersed in hot water at a temperature above the melting temperature of the material used for water-soluble yarn (e.g., 95°C). Therefore, "non-water-soluble yarn" can be described as a yarn that will not dissolve under the melting conditions of "water-soluble yarn". Furthermore, when immersed in hot water at a temperature above the melting temperature of the water-soluble yarn 7 (e.g., 95°C), physical, chemical, or structural changes (e.g., thermal shrinkage) may occur in the non-water-soluble yarn 8. However, this prototype development was conducted without such concerns. The maximum temperature of the hot water is envisioned to be 100°C, but the use of high-temperature steam exceeding 100°C is not excluded. The water-soluble yarn dissolves upon exposure to hot water or high-temperature steam. The high-temperature steam is set to a temperature lower than the melting temperature of the non-water-soluble yarn.

[0055] exist Figure 7 and Figure 8 In this structure, all the core yarns 66 are water-soluble yarns 7, and all the outer yarns 65 are non-water-soluble yarns 8. According to... Figure 7 and Figure 8 A comparison shows that before and after immersing the zipper teeth 2 and 2' in hot water, the water-soluble yarn 7 of the second part 62 and 62' dissolves in the hot water and becomes finer. The area of ​​the core yarn bundle 66 (the total area of ​​each core yarn) is smaller than before immersion. When the tubular portion 67 contains water-soluble yarn 7, the area of ​​the tubular portion 67 (the total area of ​​each outer wrapping yarn) is smaller than before immersion. Of course, it is not necessary to make all the core yarns 66 water-soluble yarns 7. Similarly, some or all of the outer wrapping yarns 65 can be made water-soluble yarns 7. The number of core yarns 66 contained in the core portions 6 and 6' is, for example, 20 or more or 25 or more, and / or, 50 or less or 40 or less.

[0056] It is also conceivable that the dissolution rate of the water-soluble yarn 7 varies depending on its position in the cross-section of the core 6, 6', resulting in different cross-sectional diameters or widths for each water-soluble yarn 7. Furthermore, it is conceivable that the water-soluble yarn 7 may be joined or fused to other yarns. For example, it is conceivable that the water-soluble yarns 7 may be joined or fused together to form a bundle of water-soluble yarns 7. It is also conceivable that the water-soluble yarn 7 may be joined or fused to yarns of a different type than the water-soluble yarn 7 (e.g., non-water-soluble yarn) contained in the core 6, 6'. In this way, Figure 7 and Figure 8 This is merely an illustrative diagram. The same applies to the case where water-soluble yarns 7 are included in the structures 10, 10', and it is also conceivable that each water-soluble yarn 7 has a different cross-sectional diameter or width, that the water-soluble yarns 7 are joined or fused to other yarns, and / or that the water-soluble yarns 7 are joined or fused to each other to form bundles of water-soluble yarns 7.

[0057] If the description is repeated, the case of setting the core yarn 66 of the core portion 6, 6' as water-soluble yarn 7 and setting its outer yarn 65 as non-water-soluble yarn 8 is merely one example. It is also possible to set the core yarn 66 as non-water-soluble yarn 8 and the outer yarn 65 as water-soluble yarn 7. It is also possible to set both the outer yarn 65 and the core yarn 66 as water-soluble yarn 7. Furthermore, it is possible to set a portion of the core yarn 66 as water-soluble yarn 7 and the remaining portion as non-water-soluble yarn 8. It is also possible to set a portion of the outer yarn 65 as water-soluble yarn 7 and the remaining portion as non-water-soluble yarn 8. The water-soluble yarn described in this specification also includes blended yarns of water-soluble and non-water-soluble fibers. Blended yarns of water-soluble and non-water-soluble fibers may partially dissolve upon immersion in hot water, thus potentially losing their yarn shape. In some cases, water-soluble fibers are included in a higher proportion than non-water-soluble yarns.

[0058] As described above, if at least one or more of the water-soluble yarns 7 in parts 2, 62', become thinner or disappear due to dissolution in hot water, then the state of part 1, 61 (e.g., the cross-sectional state of part 61 in a section orthogonal to the length direction of zipper tapes 3, 3') becomes different from the state of part 2, 62 (e.g., the cross-sectional state of part 62 in a section orthogonal to the length direction of zipper tapes 3, 3'). Regarding this point, Figure 9 The diagram schematically illustrates the thickness of cores 6, 6', while parts 61, 61' and 62, 62' have the same thickness. The effect of the thinning or disappearance of the water-soluble yarn 7 can be supplemented or compensated by the increase in the volume of other yarns. Figure 10 The diagram schematically illustrates the situation where the thickness of cores 6, 6' is greater than that of parts 61, 61', while the volume of parts 62, 62' is larger. The increase in the volume of other yarns can outweigh the effect of the thinning or disappearance of the water-soluble yarn 7. Figure 11 The diagram schematically illustrates the narrowing of the thickness of core sections 6, 6' compared to sections 61, 61' in the first section, while sections 62, 62' are narrower. The effect of the thinning or disappearance of the water-soluble yarn 7 can outweigh other causes (e.g., the increase in the volume of other yarns). Figures 8 to 10 The state shown can be controlled based on the thickness, number, proportion, and whether or not there is twist of the water-soluble yarn 7 contained in the core 6.

[0059] There are no particular limitations on the materials used for water-soluble and non-water-soluble yarns. In some cases, water-soluble yarn includes one material selected from water-soluble polyvinyl alcohol (PVA) based synthetic fibers, alkali-soluble copolyester yarns, and polylactic acid yarns, or any combination thereof. In some cases, non-water-soluble yarn includes one material selected from polyester, nylon, and rayon, or any combination thereof.

[0060] There are no particular limitations on the yarn properties and / or yarn structure of water-soluble and non-water-soluble yarns. Water-soluble and / or non-water-soluble yarns are, in some cases, multifilament yarns formed by twisting monofilament yarns together, but this is not a limitation. Water-soluble yarn can be a yarn with a weight loss rate of 50% or more when placed in water at 95°C with a liquor ratio (yarn weight: liquid weight) of 1:50 and allowed to stand for 10 minutes. Preferably, the weight loss rate of water-soluble yarn is 50% or more when placed in water at 95°C with a liquor ratio (yarn weight: liquid weight) of 1:50 and allowed to stand for 10 minutes. More preferably, the weight loss rate of water-soluble yarn is 80% or more when placed in water at 95°C with a liquor ratio (yarn weight: liquid weight) of 1:50 and allowed to stand for 10 minutes.

[0061] The tensile strength of water-soluble yarn can be 3 cN / dtx or higher, for example, 3 to 5 cN / dtx. Preferably, when used as seam yarn, water-soluble yarn has a high tensile strength of 350 N or higher, for example, 350 to 500 N. The tensile strength of yarn refers to the single yarn tensile strength (at standard time) measured using the JIS method specified in JIS L1095:2010. The seam tensile strength refers to the graphic method (seam horizontal method, standard time seam tensile strength) specified in JIS L1093:2011.

[0062] Figure 12 and Figure 13 Involving Figure 4 The zipper tapes 3 and 3' shown are applicable to... Figure 7 and Figure 8 The explanation is the same as the previous one. Therefore, lengthy explanations are omitted. If a description is provided for the sake of caution, it will be the same as the previous one. Figure 7 and Figure 8 Similarly, the state of the first part 61 of the core 6, 6' (e.g., the state of the first part 61 in a cross section orthogonal to the length direction of the zipper tape 3, 3') is different from the state of the second part 62 (e.g., the state of the second part 62 in a cross section orthogonal to the length direction of the zipper tape 3, 3'), which is a structure in which the flexibility is high in the second part 62.

[0063] Figure 14This is a schematic cross-sectional view of the core portion 6, 6, where the core yarn 66 contains both water-soluble yarn 7 and non-water-soluble yarn 8. The water-soluble yarn 7 and non-water-soluble yarn 8 can be arranged randomly or regularly. It is understood that the water-soluble yarn 7 dissolves more rapidly in hot water the further outward it is within the cross-section of the core portion 6, 6. Therefore, to avoid excessive dissolution of the water-soluble yarn 7, the water-soluble yarn 7 can be arranged at a higher density in the center of the cross-section of the core portion 6 compared to its outer periphery (see reference). Figure 14 (The dotted yarn). Conversely, to promote the dissolution of the water-soluble yarn 7, the water-soluble yarn 7 can be arranged at a higher density on its outer periphery in the cross-section of the core 6 compared to its center (see reference). Figure 14 (Solid yarn).

[0064] Figure 15 This is a general main view of another type of zipper 1. For example... Figure 15 As shown, zipper teeth 4 and 4' can be made of resin. The same effect as described above is achieved in this case, which will be naturally understood by those skilled in the art.

[0065] Regarding the manufacturing method of the zipper toothed belts 2, 2' described above, it will be readily understood by those skilled in the art upon referring to the above description. For the sake of clarity, the method includes (i) (e.g., using an automatic machine) a step of fixing at least one core 6, 6' to a long side edge portion 31, 31' using a fixing structure 10, 10'. At least one of the core 6, 6' and the structure (10, 10') comprises one or more water-soluble yarns 7 (optionally, one or more non-water-soluble yarns 8). The method further includes a step of installing a plurality of zipper teeth 4, 4' relative to at least one core 6, 6' to manufacture the zipper toothed belt 2. Through this step, a first alternating arrangement portion 63, 63' comprising a first portion 61, 61' and a second portion 62, 62' is formed in at least one core 6, 6'. Parts 61 and 61' are portions on which zipper teeth 4 and 4' are installed, and parts 62 and 62' are portions extending between adjacent zipper teeth 4 and 4' in the length direction of zipper tapes 3 and 3'. Furthermore, through this process, the components 10 and 10' include second alternating configuration portions 13 and 13', which are alternately configured with a first region 11 and 11' on the outer periphery of the first portion 61 and 61' of the core 6 and 6', and a second region 12 and 12' on the outer periphery of the second portion 62 and 62' of the core 6 and 6'. The method can further include the following steps: exposing the zipper teeth 2 to (e.g., immersing it in) hot water or a solution capable of dissolving the water-soluble yarn 7, causing one or more water-soluble yarns 7 to partially dissolve, while maintaining the zipper teeth 4, 4' installed in the first portions 61, 61' and the first regions 11, 11', and making the second portions 62, 62' more flexible than the first portions 61, 61'. The dissolution rate of the water-soluble yarn 7 in the second portions 62, 62' is greater than the dissolution rate of the water-soluble yarn 7 in the first portions 61, 61'.

[0066] As an addition or alternative, the method may further include the following steps: exposing the zipper teeth 2 to (e.g., immersing it in) hot water or a solution capable of dissolving the water-soluble yarn 7, preferentially dissolving one or more water-soluble yarns 7 in the second regions 12, 12' compared to the first regions 11, 11', while maintaining the zipper teeth 4, 4' installed in the first parts 61, 61' and the first regions 11, 11', and making the second regions 12, 12' more flexible than the first regions 11, 11'. The dissolution rate of the water-soluble yarn 7 in the second regions 12, 12' is greater than the dissolution rate of the water-soluble yarn 7 in the first regions 11, 11'.

[0067] Water-soluble yarn 7 is available on the market. The dissolution conditions of water-soluble yarn 7 (the amount of hot water per unit volume of water-soluble yarn 7, the temperature of the hot water, and the soaking time in the hot water) can also be appropriately selected by those skilled in the art.

[0068] Based on the above teachings, those skilled in the art can make various modifications to the various embodiments and features. Reference numerals added to the claims are for reference only and should not be referenced for the purpose of limiting the interpretation of the claims. The weaves 10, 10' are not limited to the ground yarn of the zipper tapes 3, 3', but may also be composed of sewing thread used to fix the cores 6, 6' relative to the zipper tapes 3, 3'. Explanation of reference numerals in the attached figures

[0069] 1: Zipper 2, 2': Zipper teeth 3, 3': Zipper tape 4, 4': Zipper teeth 5: Pull-out 6, 6': Core 7: Water-soluble yarn 8: Non-water-soluble yarn 31: First lateral edge 61, 61': Part 1 62, 62': Part 2 63, 63': Alternating configuration section 65: Outer covering yarn 66: Core yarn.

Claims

1. A zipper, comprising: A pair of zipper teeth (2, 2'), each comprising a zipper tape (3, 3') and a plurality of zipper teeth (4, 4') mounted on a side edge (31, 31') relative to the elongated dimension of the zipper tape (3, 3'); and At least one zipper pull (5) is mounted relative to the pair of zipper teeth (2, 2') and is movable to enable engagement and disengagement of the zipper teeth (4, 4') of the pair of zipper teeth (2, 2'). In the zipper (1), In each of the zipper toothed tapes (2, 2') of the pair of zipper toothed tapes (3, 3'), the side edge portion (31, 31') of the zipper tape (3, 3') includes at least one core portion (6, 6') extending along the length direction of the zipper tape (3, 3') and a fixing mechanism (10, 10') for the at least one core portion (6, 6'). The at least one core (6, 6') includes a first alternating configuration portion (63, 63') which is alternately configured with a first portion (61, 61') on which the zipper teeth (4, 4') are mounted and a second portion (62, 62') extending between adjacent zipper teeth (4, 4') in the length direction of the zipper tape (3, 3'). The tissue (10, 10') includes a second alternating configuration portion (13, 13') which is alternately configured with a first region (11, 11') and a second region (12, 12'). The first region (11, 11') is located on the outer periphery of the first portion (61, 61') of the at least one core (6, 6'), and the second region (12, 12') is located on the outer periphery of the second portion (62, 62') of the at least one core (6, 6'). The zipper (1) satisfies at least one of the following conditions (i) and (ii): (i) The at least one core portion (6, 6') comprises one or more water-soluble yarns (7), corresponding to the dissolution of the one or more water-soluble yarns (7) in the second portion (62, 62'), the second portion (62, 62') having a structure with higher softness than the first portion (61, 61'); and (ii) The tissue (10, 10') contains one or more water-soluble yarns (7) corresponding to the dissolution of the one or more water-soluble yarns (7) in the second region (12, 12'), the second region (12, 12') having a structure with higher softness than the first region (11, 11').

2. The zipper according to claim 1, wherein, The total area of ​​all yarns in the second portion (62, 62') of the cross section orthogonal to the length direction of the zipper tape (3, 3') is less than the total area of ​​all yarns in the first portion (61, 61') of the cross section orthogonal to the length direction of the zipper tape (3, 3'), or, The total area of ​​all yarns in the second region (12, 12') in a cross section orthogonal to the length direction of the zipper tape (3, 3') is less than the total area of ​​all yarns in the first region (11, 11') in a cross section orthogonal to the length direction of the zipper tape (3, 3').

3. The zipper according to claim 1 or 2, wherein, The total area of ​​all yarns in the second portion (62, 62') of the cross section orthogonal to the length direction of the zipper tape (3, 3') is less than 9 / 10 or less than 4 / 5 of the total area of ​​all yarns in the first portion (61, 61') of the cross section orthogonal to the length direction of the zipper tape (3, 3'), or... The total area of ​​all yarns in the second region (12, 12') in the cross section orthogonal to the length direction of the zipper tape (3, 3') is less than 9 / 10 or less than 4 / 5 of the total area of ​​all yarns in the first region (11, 11') in the cross section orthogonal to the length direction of the zipper tape (3, 3').

4. The zipper according to any one of claims 1 to 3, wherein, The total area of ​​all yarns in the second portion (62, 62') of the cross section orthogonal to the length direction of the zipper tape (3, 3') is more than 1 / 3, more than 1 / 2, more than 2 / 3, or more than 3 / 4 of the total area of ​​all yarns in the first portion (61, 61') of the cross section orthogonal to the length direction of the zipper tape (3, 3'), or... The total area of ​​all yarns in the second region (12, 12') in the cross section orthogonal to the length direction of the zipper tape (3, 3') is more than 1 / 3, more than 1 / 2, more than 2 / 3, or more than 3 / 4 of the total area of ​​all yarns in the first region (11, 11') in the cross section orthogonal to the length direction of the zipper tape (3, 3').

5. The zipper according to any one of claims 1 to 4, wherein, The zipper satisfies (i). The one or more water-soluble yarns (7) extend within the range of the first alternating arrangement (63, 63'), and compared with the yarn diameter or yarn width of the one or more water-soluble yarns (7) in the first part (61, 61'), the one or more water-soluble yarns (7) have a smaller yarn diameter or yarn width in the second part (62, 62').

6. The zipper according to any one of claims 1 to 5, wherein, The zipper satisfies (i). The at least one core (6, 6') comprises multiple water-soluble yarns (7) as one or more water-soluble yarns (7), and the multiple water-soluble yarns (7) in the second part (62, 62') include one or more water-soluble yarns (7) joined or fused to other yarns.

7. The zipper according to any one of claims 1 to 6, wherein, The zipper satisfies (i). The at least one core (6, 6') also includes one or more non-water-soluble yarns (8). The one or more non-water-soluble yarns (8) have a substantially fixed yarn diameter or yarn width in the first alternating configuration (63, 63').

8. The zipper according to any one of claims 1 to 7, wherein, The zipper satisfies (i). The number of water-soluble yarns (7) in the second part (62, 62') is less than the number of water-soluble yarns (7) in the first part (61, 61').

9. The zipper according to any one of claims 1 to 8, wherein, The tissue (10, 10') is the pocket weave of the zipper tape (3, 3'), and the core (6, 6') is inserted into the pocket weave of the zipper tape, or... The structure (10, 10') includes a plurality of yarn portions for securing the core (6, 6'), the core (6, 6') being woven or knitted into the structure of the zipper tape (3, 3') through the plurality of yarn portions.

10. The zipper according to any one of claims 1 to 9, characterized in that, The core (6, 6') comprises multiple core yarns (66) and multiple outer yarns (65) disposed around the multiple core yarns (66).

11. The zipper according to claim 10, wherein, The multiple core yarns (66) include at least one water-soluble yarn (7) of the more than one water-soluble yarn (7) and / or at least one non-water-soluble yarn (8).

12. The zipper according to claim 10 or 11, wherein, The plurality of outer yarns (65) includes at least one water-soluble yarn (7) of the more than one water-soluble yarn (7) and / or at least one non-water-soluble yarn (8).

13. A method for manufacturing a zipper tooth tape, comprising the following steps: The process of manufacturing a zipper tape (3, 3') with at least one core (6, 6') fixed to the long side edge (31, 31') by a fixing mechanism (10, 10'), wherein, At least one of the at least one core (6, 6') and the at least one tissue (10, 10') comprises one or more water-soluble yarns (7). In the process of manufacturing a zipper tooth belt (2, 2') by installing a plurality of zipper teeth (4, 4') relative to at least one core (6, 6'), a first alternating arrangement portion (63, 63') comprising a first portion (61, 61') and a second portion (62, 62') is included in the at least one core (6, 6'). The first portion (61, 61') is the portion on which the zipper teeth (4, 4') are installed, and the second portion (62, 62') is the portion on which the zipper teeth (4, 4') are adjacent in the length direction of the zipper belt (3, 3'). The portion extending between 4'), and through this process, the tissue (10, 10') includes a second alternating configuration portion (13, 13') which is alternately configured with a first region (11, 11') and a second region (12, 12'), the first region (11, 11') being located on the outer periphery of the first portion (61, 61') of the at least one core (6, 6'), and the second region (12, 12') being located on the outer periphery of the second portion (62, 62') of the at least one core (6, 6'); and The process involves exposing the zipper teeth (2, 2') to hot water or high-temperature steam to dissolve the water-soluble yarn (7), causing partial dissolution of one or more water-soluble yarns (7), while maintaining the zipper teeth (4, 4') installed in the first part (61, 61') and the first region (11, 11'), making the second part (62, 62') more flexible than the first part (61, 61'), and / or making the second region (12, 12') more flexible than the first region (11, 11').

14. The method for manufacturing zipper teeth according to claim 13, wherein, The tissue (10, 10') is the pocket weave of the zipper tape (3, 3'), and the core (6, 6') is inserted into the pocket weave of the zipper tape, or... The structure (10, 10') includes a plurality of yarn portions for securing the core (6, 6'), the core (6, 6') being woven or knitted into the structure of the zipper tape (3, 3') through the plurality of yarn portions.

15. The method for manufacturing zipper teeth according to claim 13 or 14, wherein, The core (6, 6') comprises multiple core yarns (66) and multiple outer yarns (65) disposed around the multiple core yarns (66).

16. The method for manufacturing zipper teeth according to claim 15, wherein, The multiple core yarns (66) include at least one water-soluble yarn (7) of the more than one water-soluble yarn (7) and / or at least one non-water-soluble yarn (8).

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