Product with slide fastener, method for manufacturing product with slide fastener, and woven fastener stringer

Abstract

Each woven fastener stringer (20, 20a, 20b, 20c) in a slide fastener-attached product (1, 2, 3) has a shape in which an element attachment section (24) of a fastener tape (21, 21a, 21b) is folded back with respect to a tape main body section (22) due to a bent section (23). A warp yarn (30) of a fastener tape (21, 21a, 21b) comprises: a plurality of first warp yarns (31) having the same thickness as each other; and second warp yarns (32) thicker than the first warp yarns (31). A sewing portion (60) of the sewing thread penetrates through the fastener tapes (21, 21a, 21b) at a position close to the second warp yarn (32), and the woven fastener stringers (20, 20a, 20b, 20c) and the fastener attachment members (6, 7, 8) are sewn together. As a result, it is difficult to shift the position of the warp (30) of the fastener tapes (21, 21a, 21b) in the weft direction even when subjected to a strong lateral pulling force, and it is possible to prevent or suppress the fastener tapes (21, 21a, 21b) and the rows of elements from being exposed to the outside.

Description

Technical Field

[0001] The present invention relates to a zippered product, a manufacturing method of the zippered product, and a woven zipper chain tape for a zippered product. The zippered product includes: a pair of woven zipper chain tapes, and a zipper mounting member to which the woven zipper chain tapes are sewn through a sewing portion of a sewing thread. Background Art

[0002] As one type of zipper, a concealed zipper (hereinafter referred to as an "invisible zipper") having concealability is known, in which the zipper teeth cannot be seen (or are difficult to see) from the outer surface side of the zipper when the left and right tooth rows are engaged with each other.

[0003] In Japanese Patent Laid-Open No. 2008-119076 (Patent Document 1), as a zipper chain tape used for an invisible zipper, a woven zipper chain tape is described, which includes: a zipper tape having a fabric texture; and a plurality of zipper teeth woven and fixed to a part of the zipper tape when the zipper tape is woven.

[0004] In the woven zipper chain tape of Patent Document 1, at the tooth mounting portion of the zipper tape, the following warp yarns are arranged as warp yarns of the fabric texture: an upper fixing warp yarn that migrates in the warp direction on the outer surface of the upper foot portion of each zipper tooth; a lower fixing warp yarn that migrates in the warp direction on the outer surface of the lower foot portion of each zipper tooth; and a fastening warp yarn that migrates in the warp direction in a manner of alternately straddling the upper foot portion and the lower foot portion of the zipper tooth. In addition, in Patent Document 1, the total fineness of the lower fixing warp yarn that migrates closer to the meshing head side of the zipper tooth than the fastening warp yarn is set to be greater than the total fineness of the upper fixing warp yarn that migrates closer to the meshing head side than the fastening warp yarn.

[0005] According to such a woven zipper chain tape of Patent Document 1, the lower fixing warp yarn that migrates closer to the meshing head side of the zipper tooth than the fastening warp yarn is densely arranged. Therefore, when manufacturing an invisible zipper using the woven zipper chain tape of Patent Document 1, in a state where the left and right tooth rows of the invisible zipper are engaged, when a lateral pulling force for pulling the left and right zipper tapes from the left and right outer sides in the width direction is applied, it is difficult to generate a gap between the left and right zipper tapes. As a result, the concealability of the invisible zipper can be improved.

[0006] Prior Art Documents

[0007] Patent Documents

[0008] Patent Document 1: Japanese Patent Laid-Open No. 2008-119076 Summary of the Invention

[0009] In an existing woven zipper chain tape such as in Patent Document 1, the zipper tape is woven by inserting weft yarns into multiple warp yarns. Further, when weaving the zipper tape, the zipper teeth are inserted into the warp yarns corresponding to the timing of inserting the weft yarns, whereby the zipper teeth are woven and fixed to a part of the zipper tape.

[0010] However, in a woven zipper chain tape formed by making the insertion of the weft yarn of the zipper tape correspond to the insertion of the zipper teeth like this, the weft yarn density in the length direction of the zipper tape is smaller than that of a zipper tape of a general fabric structure woven without weaving in the zipper teeth, for example.

[0011] In the case of forming an invisible zipper using such a woven zipper chain tape with a small weft yarn density, when manufacturing a product with an invisible zipper by sewing the invisible zipper to a zipper mounting member such as cloth, the following disadvantages occur.

[0012] That is, in the manufactured product with an invisible zipper, when the zipper mounting member (cloth) is strongly pulled or the like, the invisible zipper receives a large lateral pulling force via the sewing part that sews the zipper mounting member and the woven zipper chain tape. At this time, since the weft yarn density in the zipper tape is small as described above, the position of the warp yarn arranged close to the sewing part of the zipper tape is likely to shift in the weft yarn direction due to the lateral pulling force.

[0013] As a result, due to the position shift of the warp yarn, the position of the sewing part is also likely to shift in the weft yarn direction, whereby the zipper mounting member will shift in position, and a gap will be formed between the left and right zipper mounting members. In addition, when the warp yarns near the sewing part in the zipper tape shift in the weft yarn direction, a gap is also likely to be formed between the left and right zipper tapes, or the gap between the left and right zipper tapes is likely to widen. Therefore, there is a possibility that the zipper tape or the row of teeth of the invisible zipper will be exposed to the outside from the gap formed between the left and right zipper mounting members.

[0014] The present invention has been completed in view of the above problems, and an object thereof is to provide a zippered product, a manufacturing method of the zippered product, and a woven zipper chain tape for such a zippered product, which are difficult to cause the warp yarns of the zipper tape to shift in the weft yarn direction even when receiving a strong lateral pulling force, and can prevent or suppress the zipper tape and the row of teeth from being exposed to the outside.

[0015] In order to achieve the above object, the present invention provides a zipped product, which comprises: a pair of woven zipper tapes; and a zipper mounting member, which is sewn to the woven zipper tapes through a sewing portion of a sewing thread. Each woven zipper tape comprises: a zipper tape, which has a fabric structure formed by a plurality of warp yarns and weft yarns; and a plurality of zipper teeth, which are woven into and fixed to a part of the zipper tape. The zipped product is characterized in that: in a cross-sectional view orthogonal to the length direction of the woven zipper tape, each woven zipper tape has a shape in which a tooth mounting portion of the zipper tape, to which the zipper teeth are fixed, is folded back relative to a tape main body portion of the zipper tape due to a bent portion of the zipper tape bent into a substantially U shape. The warp yarns forming at least one side of the zipper tape comprise: a plurality of first warp yarns, which have the same thickness as each other; and at least one second warp yarn, which is thicker than the first warp yarns. The sewing portion penetrates the zipper tape at a position close to the second warp yarn to sew the woven zipper tape and the zipper mounting member together.

[0016] In addition, in the zipped product of the present invention, it is preferable that the second warp yarn is formed of a cord-like member, and the area of a cross-section of the second warp yarn orthogonal to the length direction is such that when a force is applied to the zipper tape to move the position of the first warp yarn in the direction of the weft yarn of the fabric structure, the position of the second warp yarn in the direction of the weft yarn of the fabric structure can be prevented or inhibited from shifting.

[0017] In the zipped product of the present invention, it is preferable that at least one second warp yarn is disposed at the bent portion of at least one side of the zipper tape or at a side edge portion adjacent to the bent portion of the tooth mounting portion, and the sewing portion penetrates the zipper tape at a position closer to the tape main body portion than the second warp yarn.

[0018] In addition, it is preferable that at least one second warp yarn is disposed at the bent portion of at least one side of the zipper tape or at a side edge portion adjacent to the bent portion of the tape main body portion, and the sewing portion penetrates the zipper tape at a position closer to the tooth mounting portion than the second warp yarn.

[0019] Moreover, it is preferable that two second warp yarns are disposed on at least one side of the zipper tape, and the sewing portion penetrates the zipper tape at a position between the two second warp yarns.

[0020] Next, the present invention provides a method for manufacturing a zippered product, which is used to manufacture a zippered product. The zippered product includes: a pair of woven zipper tapes; and a zipper mounting member, which is sewn to the woven zipper tapes through a sewing portion of a sewing thread. Each woven zipper tape includes: a zipper tape having a fabric structure formed by a plurality of warp yarns and weft yarns; and a plurality of zipper teeth woven and fixed to a part of the zipper tape. The method for manufacturing the zippered product is characterized by including the following steps: at least using a plurality of first warp yarns having the same thickness as each other and at least one second warp yarn thicker than the first warp yarns as the warp yarns for forming at least one side of the zipper tape to weave the zipper tape; forming the woven zipper tape by weaving and fixing the zipper teeth to a part of the zipper tape when weaving the zipper tape; and performing sewing processing on the obtained woven zipper tape and the zipper mounting member, piercing the zipper tape and the zipper mounting member by the sewing thread at a position close to the second warp yarn to form the sewing portion, and sewing the woven zipper tape and the zipper mounting member through the sewing portion.

[0021] In addition, in the manufacturing method of the present invention, it is preferably to include the following steps: using a cord-like member as the second warp yarn, and the area of the cross-section of the second warp yarn orthogonal to the length direction has the following size: when a force that makes the position of the first warp yarn move in the weft direction of the fabric structure acts on the zipper tape, it can prevent or inhibit the position of the second warp yarn from shifting in the weft direction of the fabric structure.

[0022] In the manufacturing method of the present invention, it is preferably to include the following steps: when weaving at least one side of the zipper tape, arranging the second warp yarn at the bent portion of the zipper tape or at the side edge portion adjacent to the bent portion of the tooth mounting portion; and when performing the sewing processing, piercing the zipper tape by the sewing thread at a position closer to the tape main body portion than the second warp yarn.

[0023] In addition, in the manufacturing method of the present invention, it is preferably to include the following steps: when weaving at least one side of the zipper tape, arranging the second warp yarn at the bent portion of the zipper tape or at the side edge portion adjacent to the bent portion of the tape main body portion; and when performing the sewing processing, piercing the zipper tape by the sewing thread at a position closer to the tooth mounting portion than the second warp yarn.

[0024] Moreover, in the manufacturing method of the present invention, it is preferably to include the following steps: using two of the second warp yarns to weave the zipper tape; and when performing the sewing processing, piercing the zipper tape by the sewing thread at a position between the two second warp yarns.

[0025] Next, the present invention provides a woven zipper chain tape, which includes: a zipper tape having a fabric structure formed by a plurality of warp yarns and weft yarns; and a plurality of zipper teeth woven into and fixed to a part of the zipper tape. The woven zipper chain tape is characterized in that: in a cross-sectional view orthogonal to the length direction of the woven zipper chain tape, the tooth mounting portion of the zipper tape to which the zipper teeth are fixed has a shape that turns back relative to the tape main body portion of the zipper tape due to a bent portion of the zipper tape bent into a substantially U shape. The warp yarns forming the zipper tape include: a plurality of first warp yarns having the same thickness as each other; and at least one second warp yarn thicker than the first warp yarns. The area of the cross-section of the second warp yarn orthogonal to the length direction is such that when the zipper tape is subjected to a force that moves the position of the first warp yarns in the direction of the weft yarns of the fabric structure, the position of the second warp yarns can be prevented or inhibited from shifting in the direction of the weft yarns of the fabric structure.

[0026] Advantages of the Invention

[0027] For the zipped product according to the present invention, even when subjected to a strong lateral pulling force, it is difficult for the positions of the warp yarns of the zipper tape to shift in the direction of the weft yarns, and it is possible to prevent or inhibit the zipper tape and the row of teeth from being exposed to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic bottom view showing an invisible zipper according to Embodiment 1 of the present invention.

[0029] Figure 2 is Figure 1 a cross-sectional view taken along line II-II shown in

[0030] Figure 3 is a schematic representation of Figure 1 a cross-sectional view of a main part of a seat cover manufactured by sewing the invisible zipper shown in

[0031] Figure 4 is a schematic cross-sectional view showing an invisible zipper according to a modification of Embodiment 1.

[0032] Figure 5 is a schematic cross-sectional view showing an invisible zipper according to Embodiment 2 of the present invention.

[0033] Figure 6 is a schematic representation of Figure 5 a cross-sectional view of a seat cover manufactured by sewing the invisible zipper shown in

[0034] Figure 7 is a schematic cross-sectional view showing an invisible zipper according to Embodiment 3 of the present invention.

[0035] Figure 8 is a schematic cross-sectional view of a seat cover manufactured by sewing an invisible zipper shown in Figure 7 to an epidermal member.

[0036] Description of Reference Numerals

[0037] 1, 2, 3 Seat cover (seat cover with zipper) 6, 7, 8 Epidermal member (zipper mounting member)

[0038] 10 Invisible zipper 10a, 10b Invisible zipper

[0039] 11 First stopper 12 Second stopper

[0040] 13 Pull tab 14 Pull tab body

[0041] 14a Lower wing plate 20, 20a Woven zipper chain

[0042] 20b, 20c Woven zipper chain 21 Zipper tape

[0043] 21a, 21b Zipper tape 22 Tape main body part

[0044] 23 Tape bending part 24 Chain tooth mounting part

[0045] 25, 26 Boundary part 30 Warp

[0046] 31 First warp 32 Second warp

[0047] 35 Weft 41 Upper fixing warp

[0048] 42 Lower fixing warp 43 Fastening warp

[0049] 44 Positioning warp 50 Chain tooth row

[0050] 51 Zipper chain tooth 52 Engaging head

[0051] 53 Upper leg part 54 Lower leg part

[0052] 55 Connecting part 60 Sewing part Detailed Description of the Invention

[0053] Hereinafter, embodiments will be listed and the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the present invention is not limited to the embodiments described below, and various modifications can be made as long as the structure is substantially the same as that of the present invention and the same effects are achieved.

[0054] For example, in the following embodiments, a case where a zipped product is a seat cover with a zipper installed on an automobile seat is described. However, the zipped product of the present invention is not limited to an automobile seat cover, and the present invention can also be applied to other various products such as daily sundries like clothes and bags.

[0055] Embodiment 1

[0056] Figure 1 is a bottom view schematically showing the invisible zipper of Embodiment 1, Figure 2 is Figure 1 a cross-sectional view taken along line II-II shown. Figure 3 is a cross-sectional view schematically showing a main part of a seat cover manufactured by sewing an invisible zipper to a skin member in Embodiment 1. In addition, in Figure 2 and Figure 3 in order to easily understand the features of the invention, the fabric texture is shown thick, but actually, considering the function as a woven zipper chain tape, various weft yarns and warp yarns are respectively made of threads of required thickness, and the fabric texture is also formed finely.

[0057] In addition, in the following description, the front-rear direction is the direction along the length direction of the invisible zipper or the woven zipper chain tape, or the direction along the sliding direction of the slider on the invisible zipper. For example, it is the same direction as Figure 1 the up-down direction in the paper surface. In this case, the direction in which the slider slides to engage the left and right chain tooth rows to close the invisible zipper is set as the front, and the direction in which the slider slides to separate the left and right chain tooth rows to open the zipper is set as the rear.

[0058] The left-right direction is the width direction of the invisible zipper or the direction along the direction in which the left and right chain tooth rows of the invisible zipper engage and separate. For example, it is the same direction as Figure 1 the left-right direction in the paper surface. In addition, the inner side in the left-right direction refers to the direction in which the left and right woven zipper chain tapes approach each other, and the outer side in the left-right direction refers to the direction in which the left and right woven zipper chain tapes move away from each other.

[0059] The up-down direction is the direction along the thickness direction or the front-back direction of the invisible zipper. For example, it is the same direction as Figure 1 the front-back direction of the paper surface. In this case, the side of the tape main body portion where the zipper tape is arranged relative to the zipper teeth is set as the upper side, and the opposite side is set as the lower side.

[0060] Regarding the fabric texture of the zipper tape, the weft direction (or the weft) refers to the direction along the weft yarn when observing the fabric texture of the zipper tape, or the direction along the direction in which the weft yarn is inserted into multiple warp yarns when weaving a shuttle zipper tape. In addition, the warp direction (or the warp) of the fabric texture refers to the direction orthogonal to the weft direction on the zipper tape in the fabric texture of the zipper tape.

[0061] For example, as Figure 3 shown, the invisible zipper 10 of the present Embodiment 1 is installed on the skin member (fabric) 6 of the vehicle seat cover 1 for use. In this case, the zippered product related to the present embodiment is the zippered seat cover 1, and the invisible zipper 10 is installed at the opening or the opening part of the skin member 6 forming the seat cover 1. In this case, the skin member 6 forming the seat cover 1 is a fabric or a textile, and is a zipper installation member for installing the invisible zipper 10 through the sewing part 60 of the sewing thread. In addition, in the present invention, the size, shape, material, etc. of the seat cover on which the invisible zipper is installed are not particularly limited.

[0062] The invisible zipper 10 of the present Embodiment 1 includes: a pair of left and right hidden type shuttle zipper tapes 20; a first stop portion 11 and a second stop portion 12, which are disposed at the front end portion and the rear end portion of the left and right shuttle zipper tapes 20; and a slider 13, which is slidably installed on the chain teeth row 50 of the left and right shuttle zipper tapes 20.

[0063] In the present Embodiment 1, the first stop portion 11, the second stop portion 12, and the slider 13 are respectively formed substantially in the same manner as the first stop portion, the second stop portion, and the slider used for an existing general invisible zipper. In addition, in the present invention, the first stop portion and the second stop portion are not particularly limited as long as they are formed such that the slider does not fall off from the chain teeth row at positions adjacent to the front end portion and the rear end portion. In addition, the invisible zipper of the present invention may also be formed to be provided with a separating insert for separating and moving away the left and right shuttle zipper tapes instead of the second stop portion, or may also be formed without providing the first stop portion and / or the second stop portion.

[0064] The slider 13 includes: a slider body 14; and a pull tab (not shown), which is installed on the slider body 14. The specific structure of the slider body 14 is omitted from the illustration, and it includes: a lower wing plate 14a; left and right flange portions, which are in an inverted L shape and stand up from the left and right side edges of the lower wing plate 14a; a central column portion, which stands up from the central portion in the left and right directions of the lower wing plate 14a; a guiding portion, which extends or protrudes from the upper end portion of the central column portion toward the left and right flange portions; and a pull tab installation portion, which is provided at the upper end portion of the central column portion and on which the pull tab is installed.

[0065] Each of the left and right flange portions is formed in an inverted L shape, which includes: a side wall portion that extends upward from the side edge portion of the lower wing plate 14a; and an upper wall portion that extends inward in the left and right directions from the upper end portion of the side wall portion. At the front end portion of the slider body 14, there are shoulder openings formed on both left and right sides of the central column portion, and at the rear end portion of the slider body 14, there is a rear opening. In addition, in the slider body 14, there is a substantially Y-shaped chain tooth guiding path that communicates with the left and right shoulder openings and the rear opening.

[0066] In addition, in the present invention, the slider only needs to be formed so that the left and right chain tooth rows 50 can be engaged and separated by sliding along the left and right chain tooth rows 50, and there is no particular limitation. In addition, the invisible zipper 10 of the first embodiment can also be formed to use a dedicated opening and closing member (also called a clip) formed on the left and right chain tooth rows 50 in a detachable manner to engage and separate the chain tooth rows 50, in place of the structure of mounting the slider 13 on the left and right chain tooth rows 50 as described above.

[0067] Each of the left and right woven zipper tooth tapes 20 includes: a zipper tape 21 having a fabric structure formed by a plurality of warp yarns 30 and weft yarns 35; and a plurality of zipper teeth 51 that are woven into and fixed to a part of the zipper tape 21. As Figure 3 shown, through the sewing process described later, each of the left and right woven zipper tooth tapes 20 is attached to the skin member 6 of the seat cover 1 by a sewing portion 60 formed by the sewing thread of a sewing machine. In addition, in Figure 3 , in order to easily distinguish the fabric structure of the zipper tape 21, the sewing portion 60 of the sewing thread is shown by a dotted line.

[0068] When observing a cross-section orthogonal to the front-rear direction of the woven zipper tooth tape 20, the zipper tape 21 includes: a tape main body portion 22 that forms the outer surface (upper surface) of the invisible zipper 10; a tape bent portion 23 that extends from the tape main body portion 22 and is bent into a substantially U shape or a C shape; and a tooth mounting portion 24 that extends from the tape bent portion 23 toward the back side of the tape main body portion 22 and is used for fixing the zipper teeth 51. Therefore, the zipper tape 21 has a shape in which the tape main body portion 22 and the tooth mounting portion 24 overlap in the up-down direction because the tooth mounting portion 24 is folded back to the back side of the tape main body portion 22 through the tape bent portion 23.

[0069] A plurality of zipper teeth 51 are formed into a continuous shape in which the zipper teeth 51 are not separated from each other but are connected to each other by forming a monofilament made of a synthetic resin such as polyamide or polyester into a spiral shape. Each zipper tooth 51 includes: an engaging head portion 52; an upper leg portion 53 and a lower leg portion 54 that extend outward in the left and right directions from the upper end portion and the lower end portion of the engaging head portion 52; and a connecting portion 55 that connects the zipper teeth 51 adjacent to each other in the front-rear direction. In this case, the upper leg portion 53 of the zipper tooth 51 is disposed at a position closer to the tape main body portion 22 of the zipper tape 21 than the lower leg portion 54.

[0070] When weaving the zipper tape 21, in a state where the engaging head 52 of the zipper teeth 51 faces the inner side of the tape of the zipper tape 21, a plurality of zipper teeth 51 are mounted on the zipper tape 21 by inserting and weaving the upper leg portion 53 and the lower leg portion 54 into the tooth mounting portion 24 of the zipper tape 21. Thus, a row of teeth 50 is formed by mounting a plurality of zipper teeth 51 on the zipper tape 21.

[0071] As Figure 2 schematically shown, in the woven zipper tooth chain tape 20 of the first embodiment, the fabric structure of the zipper tape 21 is formed by a plurality of warp yarns 30 and weft yarns 35. Further, in the first embodiment, the tape main body portion 22 and the tape bent portion 23 of the zipper tape 21 are formed by a plain weave. In this case, the boundary portion 25 between the tape main body portion 22 and the tape bent portion 23 is referred to as the position where the tape bent portion 23 starts to bend with respect to the tape main body portion 22 or a position in the vicinity thereof. For example, in the first embodiment, it is Figure 2 the position indicated by the double-dot chain line. In addition, in the present invention, the fabric structures forming the tape main body portion 22 and the tape bent portion 23 are not particularly limited.

[0072] The tooth mounting portion 24 of the first embodiment is formed by a fabric structure that fixes the upper leg portion 53 and the lower leg portion 54 of the zipper teeth 51. Specifically described, the fabric structure of the tooth mounting portion 24 of the first embodiment is formed using the following yarns: a plurality of upper fixing warp yarns 41, which are arranged along the warp direction on the upper surface side of the upper leg portion 53 of each zipper tooth 51; a plurality of lower fixing warp yarns 42, which are arranged along the warp direction on the lower surface side of the lower leg portion 54 of each zipper tooth 51; a plurality of fastening warp yarns 43, which are arranged along the warp direction while alternately pressing the upper leg portion 53 and the lower leg portion 54 of a plurality of zipper teeth 51; a plurality of positioning warp yarns 44, which restrict the positions of the upper fixing warp yarns 41 and the lower fixing warp yarns 42 in the weft direction; and weft yarns 35, which are continuously arranged along the weft direction from the tape bent portion 23.

[0073] The tooth mounting portion 24 of the first embodiment is formed by inserting one zipper tooth 51 into the above-mentioned plurality of warp yarns 30 every two times when weaving the zipper tape 21. Further, the tooth mounting portion 24 is formed by holding the upper leg portion 53 and the lower leg portion 54 of each zipper tooth 51 by a plurality of upper fixing warp yarns 41, a plurality of lower fixing warp yarns 42, and a plurality of fastening warp yarns 43 and making the warp yarns 30 arranged in the tooth mounting portion 24 cross the weft yarns 35 regularly. Thereby, a plurality of zipper teeth 51 can be woven into and stably fixed to the tooth mounting portion 24 one by one, and the positions and the intervals in the front-rear direction (the intervals between the zipper teeth 51) of the zipper teeth 51 can be stabilized.

[0074] In addition, in this case, the boundary portion 26 between the bent portion 23 and the fastener element mounting portion 24 can be referred to as the position between the warp yarns 41 for upper fixing arranged at the position closest to the engaging head portion 52 among the plurality of warp yarns 41 for upper fixing in the fastener element mounting portion 24 and the warp yarn 30 that does not directly contribute to fixing the fastener element. Further, in the present invention, the fastener element mounting portion of the fastener tape only needs to be formed so as to be able to weave and fix the fastener element, and the fabric texture thereof is not particularly limited, and the type and number of warp yarns used in the fastener element mounting portion are also not limited.

[0075] In each woven fastener element chain tape 20 of the first embodiment, the warp yarns 30 forming the fastener tape 21 include: a plurality of first warp yarns 31 having the same thickness (fineness) as each other; and two second warp yarns (also referred to as restricting members) 32 formed thicker than the first warp yarns 31. Further, the two second warp yarns 32 are respectively arranged at positions close to the sewing portion 60 of the sewing thread.

[0076] More specifically, the second warp yarns 32 are arranged at the side edge portion (side edge region) of the tape main body portion 22 adjacent to the bent portion 23 and the side edge portion (side edge region) of the fastener element mounting portion 24 adjacent to the bent portion 23. Particularly in the case of the first embodiment, the second warp yarn 32 is used as the warp yarn 30 arranged at the position closest to the bent portion 23 among the plurality of warp yarns 30 forming the tape main body portion 22 and one of the three warp yarns 41 for upper fixing arranged closer to the engaging head portion 52 side than the positioning warp yarn 44 in the fastener element mounting portion 24. Further, in the present invention, the position of the second warp yarn only needs to be at a position close to the sewing portion and is not particularly limited. Further, in the present invention, the detailed situation of the second warp yarn being close to the sewing portion is as described later, and it means a positional relationship in which the number of warp yarns forming the fastener tape between the sewing portion and the second warp yarn is 4 or less, preferably 2 or less.

[0077] The first warp yarns 31 of the fastener tape 21 use a complex filament yarn of polyamide or polyester. Further, each of the first warp yarns 31 has a fineness of 166 dtex or more and 500 dtex or less. For example, in the case of the first embodiment, all the first warp yarns 31 have a fineness of 330 dtex.

[0078] The second warp yarn 32 of the zipper tape 21 uses a flexible cord-like member. In this case, the area of the cross-section of the second warp yarn 32 orthogonal to the length direction of the warp yarn 30 is formed to be larger than that of the first warp yarn 31. In addition, the second warp yarn 32 is formed such that the area of the cross-section orthogonal to the length direction of the warp yarn 30 has, for example, the following size: even when the zipper tape 21 receives a relatively large force (lateral pulling force) from the sewing portion 60 of the sewing thread that causes the position of the first warp yarn 31 to move in the weft direction, it is possible to prevent or suppress the position of the second warp yarn 32 from shifting in the weft direction. In other words, each second warp yarn 32 is formed such that the area of the cross-section orthogonal to the length direction of the warp yarn 30 has the following size: even when receiving the relatively large lateral pulling force, it is possible to make the position of the second warp yarn 32 more difficult to shift in the weft direction than the first warp yarn 31.

[0079] In addition, it is preferable that the second warp yarn 32 uses a cord-like member having a structure other than the multifilament yarn structure (that is, a structure different from the structure formed by twisting a plurality of single fibers). Specifically, as the second warp yarn 32, it is preferable to use a knitted cord, a braided thread, or a monofilament thread.

[0080] Especially in the present Embodiment 1, it is preferable that the second warp yarn 32 is a knitted cord. Thus, the second warp yarn 32 can have appropriate flexibility and softness, and therefore, it is possible to stably shuttle-woven the zipper tape 21. In addition, since the second warp yarn 32 crosses the weft yarn 35, even if the cross-section of the second warp yarn 32 orthogonal to the length direction is slightly damaged, it is possible to stably make the cross-sectional area of the damaged portion larger than the cross-section of the first warp yarn 31 orthogonal to the length direction.

[0081] Here, the knitted cord refers to a cord-like member formed by enclosing a core yarn formed of multifilament yarn with a bag-shaped organization portion of knitted yarn. The braided thread refers to a cord-like member formed by cross-combining fiber bundles (for example, ply yarns). In addition, among the braided threads, it is also preferable to use a braided soft cord formed by combining 12 ply yarns as the second warp yarn 32.

[0082] By using the cord-like member as described above as the second warp yarn 32, even when the zipper tape 21 receives a relatively large lateral pulling force from the sewing portion 60, it is possible to more effectively make the position of the second warp yarn 32 difficult to shift in the weft direction.

[0083] Next, a method for manufacturing the shuttle-woven zipper chain tape 20 of the present Embodiment 1 will be described.

[0084] First, the zipper tape 21 is shuttle-woven using the above-described plurality of warp yarns 30 and weft yarns 35. In addition, while shuttle-woven the zipper tape 21, the spiral zipper teeth 51 are inserted into the tooth mounting portion 24 of the zipper tape 21 corresponding to the moment when the weft yarn 35 is inserted into the warp yarn 30, and thus the zipper teeth 51 are woven and fixed to the tooth mounting portion 24 one by one.

[0085] In the case of the first embodiment, the zipper teeth 51 are fixed to the tooth mounting portion 24 in a state where the engaging head 52 of the zipper teeth 51 faces the inside of the zipper tape 21 as described above. Further, by inserting one zipper tooth 51 every two times the weft yarn 35 is inserted into the warp yarn 30, the zipper teeth 51 are woven into the tooth mounting portion 24.

[0086] Then, the zipper tape 21 having the zipper teeth 51 fixed to the tooth mounting portion 24 is bent into a substantially U shape so that the tooth mounting portion 24 is folded back with respect to the tape main body portion 22 of the zipper tape 21. By bending the zipper tape 21, a tape bending portion 23 is formed in the zipper tape 21, and the engaging heads 52 of the respective zipper teeth 51 project from the tape bending portion 23 of the zipper tape 21 toward one direction in the left - right direction (specifically, toward the inside in the left - right direction when forming the invisible zipper 10).

[0087] Then, the zipper tape 21 is heat - set in the bent state. By performing this heat - setting treatment, the bent shape of the zipper tape 21 can be maintained. Thus, the woven zipper tooth chain tape 20 of the first embodiment is produced.

[0088] Furthermore, a pair of left - right woven zipper tooth chain tapes 20 thus obtained are prepared, and a slider 13 is installed on the tooth rows 50 of the pair of left - right woven zipper tooth chain tapes 20. In addition, a first stopper 11 and a second stopper 12 are provided at the front end portions and the rear end portions of the left - right woven zipper tooth chain tapes 20, respectively. Thus, the invisible zipper 10 of the first embodiment is manufactured.

[0089] In addition, in the first embodiment, in order to manufacture the zippered seat cover 1 obtained by sewing the invisible zipper 10 to the skin member 6, before installing the slider 13, the first stopper 11, and the second stopper 12 on the pair of left - right woven zipper tooth chain tapes 20, a sewing process is performed as follows to sew each of the left - right woven zipper tooth chain tapes 20 to the corresponding portions of the left - right skin members 6 of the seat cover 1.

[0090] In this sewing process, in order to sew the woven zipper tooth chain tape 20 to the seat cover 1, first, using a sewing machine (not shown), a sewing process is performed to sew one of the pair of left - right woven zipper tooth chain tapes 20 to the skin member 6 forming the seat cover 1.

[0091] In the sewing process of the present Embodiment 1, in a state where the tape main body portion 22 of the zipper tape 21 and the skin member 6 are overlapped, the woven zipper chain tape 20 and the skin member 6 are placed on the needle plate of the sewing machine and pressed by the presser foot of the sewing machine. At this time, the zipper tape 21 bent in a U shape is opened so that the angle between the tooth mounting portion 24 and the tape main body portion 22 becomes larger, and the tooth row 50 and the tooth mounting portion 24 of the zipper tape 21 are introduced together into the tooth guide groove formed in the presser foot (not shown) of the sewing machine.

[0092] Then, the sewing machine is operated to intermittently convey the woven zipper chain tape 20 and the skin member 6 along the conveying direction of the sewing machine. At this time, by continuously guiding the tooth row 50 and the tooth mounting portion 24 in the tooth guide groove of the presser foot of the sewing machine, the woven zipper chain tape 20 is conveyed under the presser foot of the sewing machine while opening the zipper tape 21 bent in a U shape.

[0093] In addition, according to the conveying action of the sewing machine, the sewing machine needle is repeatedly lifted and lowered with respect to the woven zipper chain tape 20 and the skin member 6 pressed by the presser foot of the sewing machine. At this time, the sewing machine needle threaded with the sewing thread pierces the woven zipper chain tape 20 and the skin member 6 at a certain interval at a position close to the thicker second warp yarn 32 of the zipper tape 21, preferably at a position between two second warp yarns 32. Thereby, it is possible to continuously form a sewing portion 60 along the length direction of the zipper tape 21 by the sewing thread of the sewing machine, and the woven zipper chain tape 20 is sewn to the skin member 6 through the sewing portion 60 and reliably fixed. Thereby, one side of the woven zipper chain tape 20 is sewn to the skin member 6 of the seat cover 1.

[0094] Furthermore, after sewing one woven zipper chain tape 20 to the skin member 6, the same sewing process as the above-described sewing process is performed on the other woven zipper chain tape 20 of the invisible zipper 10 and the other skin member 6 of the seat cover 1, whereby the other woven zipper chain tape 20 is sewn to the skin member 6 of the seat cover 1 and reliably fixed.

[0095] In addition, in the present invention, the method and manner of sewing the woven zipper chain tape to the zipper mounting member such as the skin member 6 are not particularly limited, and various conventionally known methods and manners can be used to sew the woven zipper chain tape to the zipper mounting member.

[0096] By performing the sewing process as described above, a seat cover 1 sewn with left and right woven zipper chain tapes 20 can be obtained. Then, a slider 13 is installed on the left and right woven zipper chain tapes 20 sewn to the seat cover 1, and the first stopper portion 11 and the second stopper portion 12 are provided, thereby manufacturing an automotive seat cover 1 with an invisible zipper 10.

[0097] In addition, in the present Embodiment 1, after a slider 13, a first stopper 11, and a second stopper 12 are mounted on the left and right woven zipper tapes 20 to produce an invisible zipper 10, the left and right woven zipper tapes 20 of the obtained invisible zipper 10 are sewn to the seat cover 1, thereby manufacturing the seat cover 1 with the invisible zipper 10.

[0098] In the zipper-equipped seat cover 1 of the present Embodiment 1 manufactured by performing the sewing process as described above, as Figure 3 shown, in a state where the left and right chain tooth rows 50 are engaged, the left and right skin members 6 of the seat cover 1 are butted against each other.

[0099] In the present Embodiment 1, two relatively thick second warp yarns 32 woven into the left and right woven zipper tapes 20 are arranged at two positions, namely, above and below the sewing portion 60, so as to be close to the sewing portion 60. Thereby, the left and right skin members 6 can be stably butted against each other, and the state where the skin members 6 are butted against each other can be stably maintained. As a result, the left and right woven zipper tapes 20 (particularly the left and right chain tooth rows 50) in the engaged state can be shielded by the left and right skin members 6 so that the left and right woven zipper tapes 20 cannot be seen from the outer surface side of the seat cover 1 ( Figure 3 from the upper side).

[0100] In addition, in the zipper-equipped seat cover 1 of the present Embodiment 1, the left and right sewing portions 60 that sew the woven zipper tape 20 and the skin member 6 are provided at positions close to the two second warp yarns 32 so as to penetrate the zipper tape 21. Moreover, each sewing portion 60 is provided at a position between the two second warp yarns 32 so as to penetrate each zipper tape 21.

[0101] In addition, in the present invention, the sewing portion 60 being provided at a position close to the second warp yarn 32 means that the sewing portion 60 is provided relative to the second warp yarn 32 at a position where the number of warp yarns 30 of the zipper tape 21 arranged between the sewing portion 60 and the second warp yarn 32 is 4 or less, preferably 2 or less.

[0102] In addition, when explaining the close position using a specific length (dimension) for example, when observing a cross-section orthogonal to the length direction of the zipper tape 21, the sewing portion 60 is provided relative to the second warp yarn 32 arranged at the side edge portion of the chain tooth mounting portion 24 adjacent to the tape bending portion 23 at a position where the interval (minimum interval) between the sewing portion 60 and the second warp yarn 32 is 2 mm or less, preferably 1 mm or less. In addition, when observing a cross-section orthogonal to the length direction of the zipper tape 21, the sewing portion 60 is provided relative to the second warp yarn 32 arranged at the side edge portion of the tape main body portion 22 adjacent to the tape bending portion 23 at a position where the interval (minimum interval) between the sewing portion 60 and the second warp yarn 32 is 3 mm or less, preferably 1 mm or less.

[0103] The zipped seat cover 1 of the first embodiment in which the sewing part 60 is arranged close to the second warp yarn 32 as described above is sufficient. For example, in a state where the left and right zipper tooth rows 50 are engaged, even when a force (lateral tension) pulling outward in the left - right direction is applied to the left and right skin members 6 so as to move them away from each other, the sewing part 60 can be pressed by the two thicker second warp yarns 32 arranged on each zipper tape 21. In addition, the bent parts 23 of the left and right zipper tapes 21 can be made difficult to move outward in the left - right direction by the thicker second warp yarns 32 (especially the second warp yarns 32 arranged below the tooth - mounting part 24). Therefore, the movement of the left and right skin members 6 outward in the left - right direction can be restricted or suppressed, and it is easy to maintain the state where the left and right skin members 6 are butted against each other.

[0104] Moreover, for example, in an existing invisible zipper, when a strong lateral tension is applied to the left and right skin members, since, as described above, a strong lateral tension is transmitted from the sewing part to the warp yarns of the zipper tape arranged close to the sewing part, the positions of the warp yarns shift in the weft - yarn direction. Therefore, in the past, there have been problems such as gaps being formed between the left and right skin members and between the left and right zipper tapes due to the shift of the warp - yarn positions, or further problems such as the expansion of the above - mentioned gaps.

[0105] In contrast, in the invisible zipper 10 of the first embodiment, the second warp yarns 32 of the zipper tape 21 are formed thicker than the first warp yarns 31. In particular, each second warp yarn 32 of the first embodiment is formed such that the area of the cross - section of the second warp yarn 32 orthogonal to the length direction has a size that can prevent or suppress the position of the second warp yarn 32 from shifting in the weft - yarn direction when the zipper tape 21 is subjected to a strong lateral tension as described above.

[0106] Therefore, in the zipped seat cover 1 of the first embodiment, for example, even when the density of the weft yarns 35 in the length direction of the zipper tape 21 is small as in an existing general shuttle - woven zipper tooth chain tape, since the thicker second warp yarns 32 are arranged close to the sewing part 60, when a strong lateral tension is applied to the left and right skin members 6, the position shifts of the first warp yarn 31 and the second warp yarn 32 in the weft - yarn direction can be effectively prevented or suppressed.

[0107] Especially in the first embodiment, since the second warp yarns 32 are arranged above and below close to the sewing part 60, the position shift of the first warp yarn 31 arranged in the tape main body part 22 of the zipper tape 21 and the position shift of the first warp yarn 31 arranged in the tooth - mounting part 24 can be effectively prevented respectively. As a result, it is possible to effectively prevent a gap from being formed between the left and right skin members 6 that exposes the zipper tooth row 50 and the zipper tape 21 due to the position shift of the warp yarns 30, and it is also possible to make it difficult for the zipper tooth row 50 to be exposed from between the left and right zipper tapes 21.

[0108] Moreover, in the present Embodiment 1, by disposing two relatively thick second warp yarns 32 on the left and right zipper tapes 21 respectively (specifically, near the tape bending portions 23 of the zipper tapes 21), it is possible to ensure a relatively long distance in the vertical direction from the outer surface (upper surface) exposed outside the left and right skin members 6 to the position of the engaged left and right chain tooth rows 50. Thus, for example, even if a strong lateral pulling force is applied to the left and right skin members 6, causing a gap to form between the left and right skin members 6 and between the left and right zipper tapes 21, it is possible to make it difficult for light to reach the left and right chain tooth rows 50 disposed below the zipper tapes 21. As a result, it is also possible to make it difficult to visually recognize the left and right chain tooth rows 50 from the outside.

[0109] As described above, in the zippered seat cover 1 of the present Embodiment 1, even when a relatively strong lateral pulling force is applied to the left and right skin members 6, since the engaged left and right chain tooth rows 50 and the zipper tapes 21 can be shielded (or it is difficult to see) by the left and right skin members 6, it has excellent concealability. Therefore, by using the zippered seat cover 1 of the present Embodiment 1, it is possible to effectively prevent the appearance quality of the seat cover 1 and, furthermore, the appearance quality of the seat equipped with the seat cover 1 from being degraded due to the exposure of the chain tooth rows 50.

[0110] In addition, in the present Embodiment 1, as described above, the second warp yarn 32 thicker than the first warp yarn 31 is disposed at: one of the warp yarns 30 disposed at the position closest to the tape bending portion 23 among the multiple warp yarns 30 forming the tape main body portion 22, and one of the three upper fixing warp yarns 41 disposed closer to the engaging head portion 52 side than the positioning warp yarn 44 in the chain tooth mounting portion 24.

[0111] However, in the present invention, the position where the second warp yarn 32 is disposed only needs to be close to the sewing portion 60, and there is no particular limitation, and it can be changed according to the size or use of the zipper, etc. For example Figure 4 shows a woven zipper chain tape 20c according to a modified example in which the position of the second warp yarn 32 disposed in the chain tooth mounting portion 24 is changed with respect to the zipper chain tape 20 of Embodiment 1.

[0112] In the woven zipper chain tape 20c of this modified example, the second warp yarn 32 thicker than the first warp yarn 31 is disposed at the side edge portion of the tape main body portion 22 adjacent to the tape bending portion 23 and the side edge portion of the chain tooth mounting portion 24 adjacent to the tape bending portion 23. In particular, in the case of this modified example, the second warp yarn 32 in the chain tooth mounting portion 24 is used as one of the two upper fixing warp yarns 41 disposed between the positioning warp yarn 44 closest to the engaging head portion 52 and the fastening warp yarn 43 adjacent to the positioning warp yarn 44.

[0113] Even for the woven zipper chain tape 20c of such a modified example, since the two relatively thick second warp yarns 32 are arranged close to the sewing part 60, when a strong lateral pulling force is applied to the left and right skin parts 6, it is possible to prevent or suppress the positional deviation of the first warp yarn 31 and the second warp yarn 32 in the weft yarn direction. Therefore, it is possible to effectively prevent the formation of a gap exposing the chain tooth row 50 and the zipper tape 21 between the left and right skin parts 6, and it is difficult for the chain tooth row 50 to be exposed from between the left and right zipper tapes 21.

[0114] In addition, in the woven zipper chain tape 20c of the modified example, the second warp yarn 32 of the tape main body part 22 is the warp yarn 30 arranged at the position closest to the tape bending part 23 among the multiple warp yarns 30 used to form the tape main body part 22, similarly to the woven zipper chain tape 20 of the above-described Embodiment 1. However, in the present invention, the second warp yarn can also be used, for example, as the warp yarn arranged at the tape bending part, and can also be used as the second-nearest or third-nearest warp yarn to the tape bending part among the multiple warp yarns forming the tape main body part.

[0115] Embodiment 2

[0116] Figure 5 is a cross-sectional view schematically showing the invisible zipper according to the present Embodiment 2. Figure 6 is a cross-sectional view schematically showing the main part of the seat cover manufactured by sewing the invisible zipper to the skin part in the present Embodiment 2.

[0117] In addition, in the invisible zippers 10a and 10b and the zippered seat covers 2 and 3 of the present Embodiment 2 and the following Embodiment 3, parts or components substantially the same as those of the invisible zipper 10 and the zippered seat cover 1 of the foregoing Embodiment 1 are denoted by the same reference numerals, and thus their descriptions are omitted.

[0118] The invisible zipper 10a of the present Embodiment 2 at least includes: a pair of left and right hidden-type woven zipper chain tapes 20a; and a slider (not shown) mounted on the chain tooth rows 50 of the left and right woven zipper chain tapes 20a. The slider used in the present Embodiment 2 is formed substantially in the same manner as the slider 13 described in the foregoing Embodiment 1. In addition, in the invisible zipper 10a of the present Embodiment 2, similarly to the case of the foregoing Embodiment 1, a dedicated opening and closing member formed detachably on the left and right chain tooth rows 50 can also be used instead of the slider.

[0119] Each of the left and right woven zipper chain tapes 20a in the present Embodiment 2 includes: a zipper tape 21a having a fabric structure formed by multiple warp yarns 30 and weft yarns 35; and a plurality of zipper chain teeth 51 woven and fixed to a part of the zipper tape 21a.

[0120] In addition, in the second embodiment, the warp yarns 30 forming the zipper tape 21a include: a plurality of first warp yarns 31 having the same thickness as each other; and one second warp yarn 32 that is thicker than the first warp yarns 31, and this one second warp yarn 32 is disposed at a side edge portion of the tooth mounting portion 24 in the zipper tape 21a adjacent to the tape bending portion 23.

[0121] That is, the woven zipper tooth chain tape 20a of the second embodiment is formed such that, with respect to the invisible zipper 10 of the foregoing first embodiment, the second warp yarn 32 disposed in the tape main body portion 22 of the zipper tape 21 is replaced with a first warp yarn 31 that is thinner than the second warp yarn 32. In other words, the number of the thicker second warp yarns 32 used for the zipper tape 21a of the second embodiment is not two as in the zipper tape 21 of the foregoing first embodiment, but only one. In addition, in the woven zipper tooth chain tape 20a of the second embodiment, except that the second warp yarn 32 disposed in the tape main body portion 22 of the zipper tape 21a is replaced with the first warp yarn 31, other structures are formed in the same manner as the woven zipper tooth chain tape 20 of the foregoing first embodiment.

[0122] The invisible zipper 10a of the second embodiment is manufactured in the same manner as in the foregoing first embodiment by performing sewing processing of sewing the woven zipper tooth chain tape 20a to the skin member 7 of the seat cover 2 using a sewing machine. Figure 6 The seat cover 2 with a zipper as shown.

[0123] In the seat cover 2 with a zipper manufactured according to the second embodiment, in a state where the left and right tooth rows 50 are engaged, the left and right skin members 7 of the seat cover 2 are butted against each other, so the left and right tooth rows 50 are shielded by the seat cover 2.

[0124] In addition, in the second embodiment, the left and right sewing portions 60 that sew the woven zipper tooth chain tape 20a and the skin member 7 are disposed on the upper side of the second warp yarn 32 disposed in the tooth mounting portion 24 (in other words, at a position closer to the tape main body portion 22 of the zipper tape 21a than the second warp yarn 32).

[0125] Thereby, in the second embodiment, when a strong lateral pulling force is applied to the left and right skin members 7, it is possible to effectively prevent or suppress the positions of the second warp yarn 32 and the plurality of first warp yarns 31 disposed in the tooth mounting portion 24 from shifting in the weft direction. Therefore, it is possible to prevent or suppress the formation of a gap that exposes the tooth row 50 and the zipper tape 21a between the left and right skin members 7 due to the position shift of the warp yarns 30.

[0126] Moreover, in the second embodiment, since the thicker second warp yarn 32 is also disposed in the left and right zipper tapes 21a, even if a small gap is formed between the left and right skin members 7, it is possible to make it difficult for light to reach the left and right tooth rows 50 disposed below the zipper tape 21a, and it is difficult to visually confirm the left and right tooth rows 50 from the outside.

[0127] Therefore, the seat cover 2 with a zipper in Embodiment 2 has excellent concealment.

[0128] Embodiment 3

[0129] Figure 7 FIG. is a schematic cross-sectional view showing the invisible zipper involved in Embodiment 3. Figure 8 FIG. is a schematic cross-sectional view showing the main part of the seat cover manufactured by sewing the invisible zipper to the skin member in Embodiment 3.

[0130] The invisible zipper 10b of the present Embodiment 3 includes at least: a pair of left and right hidden woven zipper tapes 20b; and a slider (not shown) mounted on the chain teeth rows 50 of the left and right woven zipper tapes 20b. Each of the left and right woven zipper tapes 20b includes: a zipper tape 21b having a fabric structure formed by a plurality of warp yarns 30 and weft yarns 35; and a plurality of zipper chain teeth 51 woven and fixed to a part of the zipper tape 21b.

[0131] In the present Embodiment 3, the warp yarns 30 forming the zipper tape 21b include: a plurality of first warp yarns 31 having the same thickness as each other; and one second warp yarn 32 thicker than the first warp yarns 31, and this one second warp yarn 32 is arranged at the side edge portion of the tape main body portion 22 of the zipper tape 21b adjacent to the tape bent portion 23.

[0132] That is, the woven zipper tape 20b of the present Embodiment 3 is formed by replacing the second warp yarn 32 arranged at the chain tooth mounting portion 24 of the zipper tape 21 in the invisible zipper 10 of the foregoing Embodiment 1 with the first warp yarn 31, and except for the change to this first warp yarn 31, other structures are formed substantially in the same manner as the woven zipper tape 20 of the foregoing Embodiment 1.

[0133] In the seat cover 3 with a zipper of the present Embodiment 3 manufactured using such an invisible zipper 10b, in a state where the left and right chain teeth rows 50 are engaged, the left and right skin members 8 of the seat cover 3 are butted against each other, so the left and right chain teeth rows 50 are shielded by the seat cover 3.

[0134] In addition, the left and right sewing portions 60 are arranged below the second warp yarn 32 arranged at the tape main body portion 22 (in other words, at a position closer to the chain tooth mounting portion 24 of the zipper tape 21b than the second warp yarn 32). Thereby, when a strong lateral pulling force is applied to the left and right skin members 8, it is possible to effectively prevent or suppress the position of the second warp yarn 32 and the positions of the plurality of first warp yarns 31 arranged at the tape main body portion 22 from shifting in the weft direction. Therefore, it is possible to prevent or suppress the formation of a gap that exposes the chain teeth row 50 and the zipper tape 21b between the left and right skin members 8 due to the position shift of the warp yarns 30.

[0135] Moreover, in the third embodiment, since the relatively thick second warp yarn 32 is arranged on the zipper tape 21b, it is similarly difficult to visually confirm the left and right row of teeth 50 arranged below the zipper tape 21b from the outside as in the cases of the first and second embodiments described above.

[0136] Therefore, the zippered seat cover 3 of the third embodiment has excellent concealability.

[0137] In addition, in the invisible zipper 10b of the third embodiment, since the second warp yarn 32 is arranged only on the tape main body portion 22 of the zipper tape 21b, when sewing the shuttle-woven zipper chain tape 20b to the seat cover 3 using a sewing machine, the tooth mounting portion 24 of the zipper tape 21b and the row of teeth 50 can be easily introduced into the tooth guide groove provided in the presser foot of the sewing machine. Therefore, for example, compared with the cases of the first and second embodiments described above, the sewing process can be carried out more smoothly.

Claims

1. A product with a zipper, which comprises: A pair of woven zipper chain tapes (20, 20a, 20b, 20c); And zipper mounting members (6, 7, 8) which are sewn to the woven zipper chain tapes (20, 20a, 20b, 20c) through the sewing portion (60) of the sewing thread. Each woven zipper chain tape (20, 20a, 20b, 20c) includes: a zipper tape (21, 21a, 21b) having a fabric structure formed by a plurality of warp yarns (30) and weft yarns (35); and a plurality of zipper teeth (51) which are woven into and fixed to a part of the zipper tape (21, 21a, 21b). The zipped product (1, 2, 3) is characterized in that: In a cross-sectional view orthogonal to the length direction of each of the woven zipper chain tapes (20, 20a, 20b, 20c), the tooth mounting portion (24) of the zipper tape (21, 21a, 21b) to which the zipper teeth (51) are fixed has a shape that turns back relative to the tape main body portion (22) of the zipper tape (21, 21a, 21b) due to a bent portion (23) of the zipper tape (21, 21a, 21b) bent into a substantially U shape, The warp yarns (30) forming at least one side of the zipper tape (21, 21a, 21b) include: a plurality of first warp yarns (31) having the same thickness as each other; and at least one second warp yarn (32) which is thicker than the first warp yarn (31), The sewing portion (60) penetrates the zipper tape (21, 21a, 21b) at a position close to the second warp yarn (32), and stitches the woven zipper chain tape (20, 20a, 20b, 20c) to the zipper mounting member (6, 7, 8).

2. The zipped product according to claim 1, characterized in that: The second warp yarn (32) is formed by a cord-like member, The area of the cross-section of the second warp yarn (32) orthogonal to the length direction is such that when the zipper tape (21, 21a, 21b) is subjected to a force that causes the position of the first warp yarn (31) to move in the weft direction of the fabric structure, it can prevent or inhibit the position of the second warp yarn (32) from shifting in the weft direction of the fabric structure.

3. The zipped product according to claim 1 or 2, characterized in that: At least one of the second warp yarns (32) is arranged at the bent portion (23) of at least one side of the zipper tape (21, 21a) or at a side edge portion adjacent to the bent portion (23) of the tooth mounting portion (24), The sewing portion (60) penetrates the zipper tape (21, 21a) at a position closer to the tape main body portion (22) than the second warp yarn (32).

4. The zipped product according to any one of claims 1 to 3, characterized in that: At least one of the second warp yarns (32) is disposed at the bent portion (23) of the zipper tape (21, 21b) on at least one side or at the side edge portion of the tape main body portion (22) adjacent to the bent portion (23). The sewing portion (60) penetrates the zipper tape (21, 21b) at a position closer to the chain tooth mounting portion (24) than the second warp yarn (32).

5. The zipped product according to any one of claims 1 to 4, characterized in that: Two of the second warp yarns (32) are disposed on at least one side of the zipper tape (21). The sewing portion (60) penetrates the zipper tape (21) at a position between the two second warp yarns (32).

6. A manufacturing method of a zippered product, which is used to manufacture a zippered product (1, 2, 3), and the zippered product (1, 2, 3) includes: A pair of woven zipper chain tapes (20, 20a, 20b, 20c); And a zipper mounting member (6, 7, 8) sewn to the woven zipper chain tapes (20, 20a, 20b, 20c) by a sewing portion (60) of a sewing thread. Each woven zipper chain tape (20, 20a, 20b, 20c) includes: a zipper tape (21, 21a, 21b) having a fabric structure formed by a plurality of warp yarns (30) and weft yarns (35); And a plurality of zipper chain teeth (51) woven and fixed to a part of the zipper tape (21, 21a, 21b). The method for manufacturing the zipped product is characterized by including the following steps: Weaving the zipper tape (21, 21a, 21b) using at least a plurality of first warp yarns (31) having the same thickness as each other and at least one second warp yarn (32) thicker than the first warp yarn (31) as the warp yarns forming at least one side of the zipper tape (21, 21a, 21b); Forming the woven zipper chain tapes (20, 20a, 20b, 20c) by weaving and fixing the zipper chain teeth (51) to a part of the zipper tape (21, 21a, 21b) when weaving the zipper tape (21, 21a, 21b); and By performing sewing processing on the obtained woven zipper chain tapes (20, 20a, 20b, 20c) and the zipper mounting member (6, 7, 8), causing the sewing thread to pierce the zipper tape (21, 21a, 21b) and the zipper mounting member (6, 7, 8) at a position close to the second warp yarn (32) to form the sewing portion (60), and sewing the woven zipper chain tapes (20, 20a, 20b, 20c) to the zipper mounting member (6, 7, 8) through the sewing portion (60).

7. The manufacturing method of the zippered product according to claim 6, characterized in that, Including the following steps: Using a cord-like member as the second warp yarn (32), the area of the cross-section of the second warp yarn (32) orthogonal to the length direction having such a size that when the zipper tape (21, 21a, 21b) is subjected to a force that moves the position of the first warp yarn (31) in the weft direction of the fabric structure, the position of the second warp yarn (32) can be prevented or inhibited from shifting in the weft direction of the fabric structure.

8. The manufacturing method of the zippered product according to claim 6 or 7, characterized in that, Including the following steps: When knitting the zipper tape (21, 21a) on at least one side, the second warp yarn (32) is disposed at the bent portion (23) of the zipper tape (21, 21a) or at a side edge portion of the tooth mounting portion (24) adjacent to the bent portion (23); and When performing the sewing process, the sewing thread pierces the zipper tape (21, 21a) at a position closer to the tape main body portion (22) than the second warp yarn (32).

9. The manufacturing method of the zippered product according to any one of claims 6 to 8, characterized in that, Comprising the following steps: When knitting the zipper tape (21, 21b) on at least one side, the second warp yarn (32) is disposed at the bent portion (23) of the zipper tape (21, 21b) or at a side edge portion of the tape main body portion (22) adjacent to the bent portion (23); And When performing the sewing process, the sewing thread pierces the zipper tape (21, 21b) at a position closer to the tooth mounting portion (24) than the second warp yarn (32).

10. The manufacturing method of a zippered product according to any one of claims 6 to 9, characterized in that, Comprising the following steps: Knitting the zipper tape (21) using two of the second warp yarns (32); and When performing the sewing process, the sewing thread pierces the zipper tape (21) at a position between the two second warp yarns (32).

11. A woven zipper chain tape, comprising: A zipper tape (21, 21a, 21b) having a fabric structure formed by a plurality of warp yarns (30) and weft yarns (35); And a plurality of zipper teeth (51) woven and fixed to a part of the zipper tape (21, 21a, 21b), the woven zipper tooth chain tape (20, 20a, 20b, 20c) is characterized in that: In a cross-sectional view orthogonal to the length direction of the woven zipper tooth chain tape (20, 20a, 20b, 20c), the tooth mounting portion (24) of the zipper tape (21, 21a, 21b) to which the zipper teeth (51) are fixed is folded back with respect to the tape main body portion (22) of the zipper tape (21, 21a, 21b) due to a bent portion (23) bent into a substantially U shape; The warp yarns (30) forming the zipper tape (21, 21a, 21b) include: a plurality of first warp yarns (31) having the same thickness as each other; And at least one second warp yarn (32) that is thicker than the first warp yarn (31), The area of the cross-section of the second warp yarn (32) orthogonal to the length direction is such that when the zipper tape (21, 21a, 21b) is subjected to a force that moves the position of the first warp yarn (31) in the weft direction of the fabric structure, it can prevent or inhibit the position of the second warp yarn (32) from shifting in the weft direction of the fabric structure.

Images