Waterproof zipper and method for manufacturing the same

Abstract

The present invention provides a waterproof zipper (1) in which a connecting sheet (70) and a rear stopper (80) are provided separately, and a manufacturing method thereof. At least one second stopper hole (92) of at least one of left and right waterproof tapes (40, 50) is not covered by the connecting sheet (70), and the rear stopper (80) is provided in a manner of filling the at least one second stopper hole (92).

Description

Technical Field

[0001] This invention relates to a waterproof zipper and its manufacturing method. Background Technology

[0002] Compared to non-waterproof zippers, waterproof zippers involve more manufacturing processes, resulting in higher manufacturing costs. Previously, as seen in Patent Document 1... Figure 4 As is understandable, high-frequency welding technology is used to attach the sheet component to the lower surface of the zipper tape (especially the waterproof layer therein), and then a through hole is formed through the zipper tape and the sheet component. A stop is formed at the location where the through hole is provided by injection molding.

[0003] Patent Document 2, unlike the method described above, discloses a method that also includes a sheet material component and injection molds the stop. Specifically, it discloses a stop having a main body portion for stopping the zipper pull and an extension portion extending from the main body portion. This document describes a case where a first through hole is provided corresponding to the zipper teeth, and a second through hole is provided corresponding to the stop (see this document). Figure 3 ).

[0004] Patent document 3 also discloses a case in which the stop is formed by injection molding, including a sheet component (for example, see this document). Figure 6 And paragraph 0042).

[0005] [Existing Technical Documents]

[0006] [Patent Literature]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 2007-215819

[0008] [Patent Document 2] International Publication No. 2013 / 114529

[0009] [Patent Document 3] International Publication No. 2019 / 180758

[0010] In cases where connecting sheets are bonded across the left and right zipper tapes to connect the left and right zipper tapes, after this bonding process, in order to perform injection molding of the rear stop, it is necessary to form a hole for allowing molten resin to flow between the upper and lower mold cavities (specifically, a hole penetrating the zipper tape and the connecting sheet; see Patent Document 1). Figure 4 The hole-making process is required for waterproof zippers. This applies even if holes formed during injection molding for the zipper teeth remain on the zipper tape. This is because the holes are sealed by the sheet components during lamination. The hole-making process required for the sheet component lamination contributes to the increased cost of waterproof zippers. Summary of the Invention

[0011] According to one aspect of the present invention, a waterproof zipper comprises: left and right zipper tooth strips, wherein left and right rows of zipper teeth are arranged on the side edges of the left and right waterproof strips, and rows of stop holes arranged in a straight line at predetermined intervals are respectively provided on the left and right waterproof strips; a connecting sheet connecting the left and right waterproof strips at the rear end of the waterproof zipper; and a rear stop member disposed at an adjacent position behind the rows of zipper teeth of the left and right waterproof strips. Each row of stop holes in the left and right waterproof strips includes: a set of first stop holes, each of which is filled by a respective zipper tooth; and one or more second stop holes, which are disposed near the rear stop member compared to the set of first stop holes. The connecting sheet is arranged such that it does not cover at least one of the second stop holes of at least one of the left and right waterproof strips, and the rear stop member is arranged such that it fills at least one of the second stop holes.

[0012] In several embodiments, the rear stop includes an upper portion and a lower portion disposed on the upper and lower sides of the left and right waterproof strips, the upper and lower portions being interconnected only via a plurality of filling portions that respectively fill one or more second stop holes in the left and right waterproof strips. A pin hole extending to the connecting sheet may be provided in the lower portion of the rear stop.

[0013] In several embodiments, a recess or notch is provided on the connecting sheet in a manner that does not cover one or more second stop holes on at least one side of the left and right waterproof strips. The recess or notch may be completely filled by a rear stop. The recess or notch may be provided in a manner that does not cross the boundaries of the left and right waterproof strips when the left and right zipper teeth are in the closed state.

[0014] In several embodiments, one or more second stop holes are located at the rear end of the stop hole row. The number of second stop holes for each of the left and right waterproof strips can be one. The rear stop can be configured to at least partially include the left and right zipper teeth located at the rear end of the left and right zipper tooth rows. A gate mark may be present on the connecting sheet. The rear stop may have a gate mark different from that on the connecting sheet.

[0015] A method for manufacturing a waterproof zipper according to another aspect of the present invention includes the following steps: manufacturing a zipper tooth strip with zipper tooth rows arranged thereon on the side edge of a waterproof strip; forming a connecting sheet on a zipper chain including pairs of zipper tooth strips; and forming a rear stop on the zipper chain by injection molding. A row of stop holes, arranged in a straight line at predetermined intervals, is provided on the left and right waterproof strips respectively. Each row of stop holes includes a set of first stop holes and one or more second stop holes disposed near the rear stop compared to the set of first stop holes. The connecting sheet is formed by injection molding such that it does not cover at least one of the second stop holes on at least one side of the left and right waterproof strips. The rear stop is formed by injection molding such that it fills at least one of the second stop holes.

[0016] In several embodiments, the rear stop includes an upper and a lower portion disposed on the upper and lower sides of the left and right waterproof strips, the upper and lower portions being interconnected only by a plurality of filling portions that respectively fill one or more second stop holes in the left and right waterproof strips.

[0017] In several embodiments, a recess or notch is provided on the connecting sheet in such a way that it does not cover at least one of the second stop holes on the left and right waterproof strips.

[0018] According to one aspect of the present invention, even when the connecting sheet is provided before the rear stop, the injection molding process for the rear stop can be omitted, or it can be assumed that even if the opening process is performed, the number of through holes can be reduced, thereby promoting cost reduction of the waterproof zipper. Attached Figure Description

[0019] Figure 1 This is a schematic top view of a waterproof zipper according to one aspect of the present invention.

[0020] Figure 2 This is a schematic bottom view showing the rear end of a waterproof zipper.

[0021] Figure 3 This is a rough partial top view of the left zipper teeth, with dashed circles representing stop holes formed at certain intervals on the zipper teeth.

[0022] Figure 4 It is along Figure 3 A schematic cross-sectional view of the single-dotted dashed line IV-IV.

[0023] Figure 5 This is a schematic bottom view showing the rear end of the zipper, illustrating the relationship between the first and second stop holes, the connecting sheet, and the lower stop.

[0024] Figure 6 It is along Figure 5A simplified cross-sectional view of the single-dash line VI-VI.

[0025] Figure 7 It is along Figure 5 A schematic cross-sectional view of the single-dotted dashed line VII-VII.

[0026] Figure 8 It is along Figure 5 A schematic cross-sectional view of the single-dotted dashed lines VIII-VIII.

[0027] Figure 9 This is a manufacturing process diagram for waterproof tape, showing the extrusion molding process.

[0028] Figure 10 This indicates the hole-opening process used to form a row of stop holes.

[0029] Figure 11 This refers to the injection molding process used to form the zipper teeth.

[0030] Figure 12 This indicates the injection molding process for connecting sheets.

[0031] Figure 13 This indicates the injection molding process for the lower stop component.

[0032] Figure 14 This is a reference diagram showing the state in which zipper teeth are formed.

[0033] Figure 15 This is a reference diagram showing the state in which connected sheets are formed.

[0034] Figure 16 This is a reference diagram showing the state in which a stop element is formed.

[0035] Figure 17 This is a schematic diagram showing a modified example of connecting sheets.

[0036] Figure 18 This is a schematic diagram showing a modified example of connecting sheets.

[0037] Figure 19 This is a schematic diagram showing a modified example of connecting sheets.

[0038] Figure 20 This is a schematic diagram showing a modified example of a stop hole arrangement.

[0039] [Label Explanation]

[0040] 1. Waterproof zipper;

[0041] 20, 30: Zipper teeth;

[0042] 21, 31: Zipper teeth;

[0043] 40, 50: Waterproof tape;

[0044] 61, 62: Zipper teeth and chain straps;

[0045] 70: Connecting sheets;

[0046] 80: Ending component;

[0047] 81: upper part;

[0048] 82: lower part;

[0049] 83: Filler section;

[0050] 90: stop hole row;

[0051] 91: First stop hole;

[0052] 92: Second stop hole. Detailed Implementation

[0053] 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 extensive explanation, and will also understand the synergistic effects of such combinations. Repeated descriptions between embodiments are generally omitted. The accompanying drawings are provided primarily for the purpose of describing the invention and have been simplified for ease of drawing. The features are to be understood as being effective not only for the waterproof zipper and its manufacturing method disclosed in this application, but also as general features common to various other waterproof zippers and methods not disclosed in this specification.

[0054] The following definitions of forward and backward directions are based on the direction of movement of the zipper pull. The left-right direction is orthogonal to the forward and backward direction and parallel to the plane of the zipper tape. The up-down direction is orthogonal to both the forward / backward and left-right directions. These directions can be defined in different ways according to the following descriptions.

[0055] like Figure 1 as well as Figure 2 As shown, a waterproof zipper 1 (hereinafter referred to as zipper 1) is a strip that is longer in the front-to-back direction and narrower in the left-to-right direction. It is installed at the opening of clothing, bags, etc., and allows the opening to be opened and closed. Because zipper 1 is waterproof, water will not normally seep into the interior through zipper 1 when it is closed. Zipper 1 is typically installed at the opening of clothing, bags, etc. by heat pressing, heat fusion, or sewing.

[0056] The zipper 1 has: left and right zipper teeth rows 20, 30 disposed on the side edges 41, 51 of the left and right waterproof strips 40, 50; and left and right zipper tooth strips 61, 62 disposed on the side edges 41, 51 of the left and right zipper teeth rows 20, 30; and a zipper head 11 that moves forward to engage the left and right zipper teeth rows 20, 30 and moves backward to disengage the left and right zipper teeth rows 21, 31.

[0057] The zipper pull 11 is made of resin or metal and has an upper wing plate, a lower wing plate, and a connecting post that connects them. The zipper pull 11 is a commonly used zipper pull, and its structure is omitted for further detail. When the zipper pull 11 moves forward to close the zipper 1, the side edges 41 and 51 of the left and right waterproof strips 40 and 50 press against each other and come into contact, ensuring the watertightness of the zipper 1.

[0058] A front stop 12 is provided at the front end of the zipper 1 (adjacent to the left and right zipper teeth rows 20, 30). A rear stop 80 is provided at the rear end of the zipper 1 (adjacent to the rear of the left and right zipper teeth rows 20, 30). The front stop 12 and the rear stop 80 are formed by injection molding of a thermoplastic resin material (e.g., polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, polycarbonate). The front stop 12 is constructed, for example, as disclosed in Patent Document 3. The structure of the rear stop 80 will be described later. The front stop 12 and the rear stop 80 not only prevent the zipper pull 11 from moving, but also connect the left and right waterproof strips 40, 50 to ensure watertightness.

[0059] Waterproof tapes 40 and 50 include tape body parts 42 and 52, on which embossed patterns are formed (see reference). Figure 3 Side edges 41 and 51 are located on the inner sides of the main body portions 42 and 52 in the left and right directions. The base fabric 43 of the waterproof tapes 40 and 50 is covered by a waterproof layer 44 (see reference). Figure 4 The base fabric 43 is formed in a manner having a woven or braided structure, or a mixture thereof. A waterproof layer 44 is formed and imparts waterproofness by covering the base fabric 43. The waterproof layer 44 is, for example, made of a thermoplastic elastomer.

[0060] On the left and right waterproof strips 40 and 50 respectively, there are rows 90 of stop holes 91 and 92 arranged in a straight line at a specified interval P1 (refer to...). Figure 3 as well as Figure 5 In each row of stop holes 90, there is a group of first stop holes 91, each first stop hole 91, which is filled by each zipper tooth 21, 31 (see reference). Figure 3 Additionally, each row of stop holes 90 includes one or more second stop holes 92 disposed near the rear stop member 80 compared to a set of first stop holes 91 (see reference). Figure 5The first stop hole 91 is provided corresponding to each zipper tooth, and the second stop hole 92 is provided corresponding to the rear stop member 80. Therefore, the number of first stop holes 91 is greater than the number of second stop holes 92. The first and second stop holes 91 and 92 have the same opening shape and the same opening diameter. Typically, the second stop hole is located at the rearmost end of the stop hole row, and / or the number of second stop holes is one.

[0061] Zipper teeth 21 and 31 are formed by injection molding of a thermoplastic resin material (e.g., polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, polycarbonate), which fills the first stop hole 91. Zipper teeth 21 and 31 are tightly attached to the waterproof strips 40 and 50 and are not easily rotated around the first stop hole 91. One zipper tooth is provided corresponding to one first stop hole. Therefore, in each zipper tooth row 20 and 30, zipper teeth 21 and 31 are arranged at a predetermined spacing P1, the same as the spacing between the stop holes 91 and 92.

[0062] Zipper teeth 21 and 31 have a base 22, a head 23, and a neck 24 disposed between the base 22 and the head 23 (see reference). Figure 3 A groove 21j extending in the front-rear direction is provided on the front end face of the head 23, and waterproof strips 40 and 50 (inner side in the left-right direction) protrude from the bottom of the groove 21j (see reference). Figure 4 Furthermore, the zipper teeth 21 and 31 have thin shoulder portions 25 located on the front and rear sides of the neck 24, and thin fin portions 26 extending outward from the base 22 in the left and right directions. The shoulder portions 25 are inserted into the grooves 21j of the heads 23 of the zipper teeth that engage. The fin portions 26 are inserted between the upper and lower flanges (not shown) of the zipper pull 11.

[0063] When zipper 1 is closed, the head 23 of zipper tooth 21 is sandwiched between the heads of adjacent zipper teeth 31. Similarly, the head of zipper tooth 31 is sandwiched between the heads 23 of adjacent zipper teeth 21. Thus, when the left and right zipper teeth 21 and 31 are engaged, the end face 41c of the waterproof strip 40 is pressed against the end face of the waterproof strip 50 and comes into contact. These end faces can be referred to as mating end faces.

[0064] Zipper teeth 21 and 31 have upper teeth 27 and lower teeth 28 located above and below the waterproof strips 40 and 50, and a filling portion 29 for filling the first stop hole 91 (see reference). Figure 4 The upper and lower parts 27 and 28 of the chain tooth are connected to each other only by a single filling part 29. Furthermore, the upper part 27 of the chain tooth includes an upper head portion, an upper neck portion, and an upper base portion. Similarly, the lower part 28 of the chain tooth includes a lower head portion, a lower neck portion, and a lower base portion.

[0065] Reference Figures 5 to 8 The structure of the rear end of the zipper 1 will be described. In addition to the rear stop 80, a connecting sheet 70 is provided at the rear end of the zipper 1 (adjacent to the rear of the left and right zipper teeth rows 20 and 30). The connecting sheet 70 is made of a resin material (e.g., polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, polycarbonate, etc.) that is the same as or different from the rear stop 80. As the resin material for the connecting sheet 70, an appropriate material is selected that allows the connecting sheet 70 to deform (e.g., bend or flex) in accordance with the waterproof strip. Through appropriate material selection, the connecting sheet 70 can possess moderate flexibility. In some cases, although the flexibility of the connecting sheet 70 is higher than that of the rear stop 80, this is not necessarily the case. The connecting sheet 70 is provided such that it crosses the boundary B1 of the left and right waterproof strips 40 and 50 and covers the lower surface of the left and right waterproof strips 40 and 50.

[0066] The resin material for the rear stop 80 is selected to be suitable for withstanding repeated impacts or contact with the slider 11. Through appropriate material selection, the rear stop 80 can possess sufficient hardness and mechanical strength. In some cases, the hardness or mechanical strength of the rear stop 80 is higher than that of the connecting sheet 70, but this is not a limitation. It is also conceivable that the rear stop 80 has the same or higher flexibility as the connecting sheet 70.

[0067] The rear stop 80 includes an upper portion 81 and a lower portion 82 disposed on the upper and lower sides of the left and right waterproof strips 40 and 50, respectively. The upper portion 81 and the lower portion 82 are interconnected via a plurality of filling portions 83 that fill one or more second stop holes 92 in the left and right waterproof strips 40 and 50. The rear stop 80 is configured to at least partially include left and right zipper teeth 21 and 31 located at the rear ends of the left and right zipper tooth rows 20 and 30. This prevents the exposure of the mating end faces of the left and right zipper tapes. The lower portion 82 of the rear stop 80 covers the connecting sheet 70, and there is no gap between the rear stop 80 and the connecting sheet 70.

[0068] The connecting sheet 70 and the rear stop 80 are formed through different or two-stage injection molding processes. Suitable materials, as described above, can be used for the connecting sheet 70 and the rear stop 80. Furthermore, gate marks are formed on both the connecting sheet 70 and the rear stop 80. These gate marks are created by cutting the hardened resin between the mold cavity and the gate. Treatments to make the gate marks difficult to see (e.g., grinding) can also be implemented. When the connecting sheet 70 is bonded to the waterproof strip using high-frequency welding technology, the second stop hole 92 may be closed by the connecting sheet 70 depending on its position. When the connecting sheet 70 is formed by injection molding, the unintentional closure of the second stop hole 92 due to positioning on the mold can be avoided or suppressed.

[0069] Provided that the second stop hole 92 is not covered by the connecting sheet 70, high-frequency welding technology can be used to attach the connecting sheet 70 to the waterproof tape. However, the time required for positioning on the zipper chain used for the connecting sheet 70 may be longer. Furthermore, during the manufacturing and storage of the connecting sheet 70 to the specified dimensions, shrinkage may occur, potentially causing dimensional deviations. Additionally, even if a connecting sheet 70 with a recess is prepared, deformation may occur during welding, resulting in undesirable shape changes, making it difficult to weld the connecting sheet 70 in the desired manner. Moreover, since high-frequency welding requires specialized knowledge and experience in the management and use of high-frequency power supplies, it also creates a training burden for the operators responsible for manufacturing.

[0070] In this embodiment, the connecting sheet 70 is provided such that it does not cover at least one of the second stop holes 92 of at least one of the left and right waterproof strips 40 and 50, and the rear stop member 80 is provided such that it fills the at least one second stop hole 92. Therefore, even when the connecting sheet 70 is provided separately from the rear stop member 80, a portion of the stop holes included in the stop hole row 90 can be assigned as second stop holes 92 to the rear stop member 80, omitting the hole-opening process performed for the rear stop member 80, or, even if the hole-opening process is performed, the number of through holes can be reduced.

[0071] On the connecting sheet 70, a recess or notch 76 is provided in such a way that it does not cover at least one of the second stop holes 92 on the left and right waterproof strips 40 and 50 (see reference). Figure 5 The connecting sheet 70 can be configured as close as possible to the zipper teeth 20, 30, reducing the possibility of water leakage at the boundary B1 of the waterproof strips 40, 50 between the left and right zipper teeth 20, 30 and the connecting sheet 70.

[0072] The recess or notch 76 is completely filled by the rear stop 80 (the resin material of the rear stop 80) and will not appear in the appearance of the zipper 1. The rear stop 80 has a filling portion 84 that fills the recess or notch 76, which is connected to the filling portion 83 that fills the second stop hole 92 (see reference). Figure 6 Additionally, if the recess or notch 76 protrudes beyond the rear stop 80, there is a concern that it may cause water leakage.

[0073] The recess or notch 76 is designed to prevent the left and right zipper teeth 61, 62 from crossing the boundary B1 of the left and right waterproof strips 40, 50 when closed. This reduces the possibility of water leakage at boundary B1 caused by the recess or notch 76 at boundary B1.

[0074] A pin hole 85 extending to the waterproof strips 40 and 50 or the connecting sheet 70 is provided at the lower part 82 of the rear stop member 80. Alternatively, a pin hole 85 extending to the waterproof strips 40 and 50 is provided at the upper part 81 of the rear stop member 80. This can suppress the shaking of the waterproof strips 40 and 50 during injection molding of the rear stop member 80.

[0075] Alternatively, after setting the connecting sheet 70, a through hole can be formed through the laminate of the waterproof strips 40 and 50 and the connecting sheet 70, which can then be used as a cavity connection path for injection molding of the rear stop 80. In this case, the number of through holes that need to be reformed due to the second stop hole 92 not being covered by the connecting sheet 70 can be reduced, enabling miniaturization and cost reduction of the fixture for opening the hole.

[0076] The following is for reference Figures 9 to 16 The manufacturing method of zipper 1 will be explained. First, as follows... Figure 9 As shown, a waterproof tape is manufactured by extrusion molding. Specifically, a tape base fabric 43 is supplied to a die device 101, and the upper and lower surfaces and end faces 41c of the tape base fabric 43 are covered with molten elastomer that fills the supply path of the die device 101. The elastomer hardens to form a waterproof layer 44.

[0077] Next, as Figure 10 As shown, holes are made in the waterproof tape. Specifically, the waterproof tape is supplied directly below the punch 102, causing the punch 102 to descend and form first and second stop holes 91 and 92. The waterproof tape is clamped between the pressing roller 104 and the drive roller 105, and is conveyed downstream according to the rotation of the drive roller 105. The punch 102 descends synchronously with the conveying of the waterproof tape downstream for a specified length, forming stop holes at a specified interval P1. For stable punching, a platform 103 with cylindrical holes for the punch 102 to be inserted is used. Waste generated during the punching process is collected in a box below the platform 103.

[0078] Next, as Figure 11 As shown, zipper teeth are formed by injection molding. Specifically, a waterproof strip with first and second stop holes 91 and 92 is sandwiched between the lower mold 106 and the upper mold 107, and molten resin is supplied to the molding cavity 108 defined by them through flow paths (injection port, runner, gate) to form zipper teeth. By cooling the lower mold 106 and the upper mold 107, the molten resin in the molding cavity 108 hardens. In this way, zipper teeth that fill the first stop hole 91 and zipper tooth strips with these zipper teeth arranged at a constant spacing can be obtained.

[0079] Next, use Figure 12 The lower mold 111 and upper mold 112 shown are used to form the connecting sheet 70 by injection molding. Specifically, the zipper teeth strip obtained as described above is combined to form a zipper chain and disposed in the recess on the upper surface of the lower mold 111. By stacking the upper mold 112 on the lower mold 111, a molding cavity 70' for molding the connecting sheet 70 is defined. Molten resin is supplied to the molding cavity 70' via a flow path (injection port, runner, gate), and then the connecting sheet 70 is formed by cooling the lower mold 111 and the upper mold 112. By forming the connecting sheet 70 by injection molding, the situation where the second stop hole 92 is blocked by the connecting sheet 70 can be more reliably avoided.

[0080] Next, use Figure 13 The lower mold 113 and upper mold 114 shown are used to form the rear stop 80 by injection molding. Specifically, a zipper chain, with the left and right zipper teeth connected by a connecting sheet 70, is positioned in a recess on the upper surface of the lower mold 113. A molding cavity 80' for molding the rear stop 80 is defined by stacking the upper mold 114 on the lower mold 113. Molten resin is supplied to the molding cavity 80' via flow paths (injection port, runner, gate), and the rear stop 80 is then formed by cooling the lower mold 113 and the upper mold 114.

[0081] The molding cavity 80' includes a first space 81' for the upper portion 81 of the molding rear stop 80 and a second space 82' for the lower portion 82 of the molding rear stop 80. These first and second spaces 81', 82' (functioning as a cavity communication path) are spatially connected via a second stop hole 92. Therefore, even if the gate is provided only on one side of the lower mold and the upper mold, the molten resin can flow between the first and second spaces through the second stop hole 92.

[0082] As described above, the connecting sheet is formed by injection molding, and the left and right waterproof strips 40 and 50 (see reference) are connected to the zipper chain. Figure 14 as well as Figure 15The connecting sheet 70 is provided with second stop holes 92 that do not close the left and right waterproof strips 40 and 50. Therefore, the opening process for forming through holes that penetrate the waterproof strip and the connecting sheet is omitted, or even if the opening process is performed, the number of through holes can be reduced.

[0083] As described above, the rear stop 80 is formed by injection molding, and the rear stop 80 is arranged such that it at least partially includes left and right zipper teeth 21, 31 located at the rear ends of the left and right zipper tooth rows 20, 30 (see reference). Figure 16 Furthermore, the lower portion 82 of the rear stop 80 is provided to cover the front end of the connecting sheet 70. Additionally, a pin hole 85 extending to the connecting sheet 70 is provided in the lower portion 82 of the rear stop 80.

[0084] The following describes the changes related to the features of the present invention. For example... Figure 17 As shown, a notch 76 can also be provided on the connecting sheet 70. In this way, the same effect as described above can be achieved. The notch 76 is provided in such a way that it forms a step at the front end of the connecting sheet 70. The notch 76 does not cross the boundary B1 of the left and right waterproof strips 40 and 50, and the left and right waterproof strips 40 and 50 are securely connected.

[0085] like Figure 18 As shown, a notch 76 can also be provided on the connecting sheet 70. In this way, the same effect as described above can be achieved. The notch 76 is provided in such a way that a V-groove is formed at the front end of the connecting sheet 70. The notch 76 crosses the boundary B1 of the left and right waterproof strips 40 and 50, but is completely filled by the rear stop 80. Therefore, the specified degree of waterproofness of the waterproof strips 40 and 50 is ensured.

[0086] exist Figure 19 In the case shown, in the above-described manner, one of the stop holes 92' used as the second stop hole 92 is closed by the connecting sheet 70. The rear stop 80 is configured to fill only one second stop hole 92.

[0087] exist Figure 20 In the case shown, the connecting sheet 70 is provided in such a way that it covers or fills the third stop hole 93, which is in addition to the first and second stop holes included in the stop hole row. However, since making pointless openings in the waterproof strips 40 and 50 may lead to a reduction in waterproof performance, this is not preferred.

[0088] Based on the above teachings, those skilled in the art can make various modifications to the embodiments. Reference numerals included in the claims are for reference only and should not be used for the purpose of limiting the interpretation of the claims.

Claims

1. A waterproof zipper (1), wherein, have: The left and right zipper tooth strips (61, 62) have left and right zipper tooth rows (20, 30) with zipper teeth (21, 31) arranged on the side edges (41, 51) of the left and right waterproof strips (40, 50), and the left and right waterproof strips (40, 50) have rows (90) with stop holes (91, 92) arranged in a straight line at the same specified interval (P1) respectively. Connecting sheet (70), which connects the left and right waterproof strips (40, 50) to the rear end of the waterproof zipper (1); as well as A rear stop (80) is located adjacent to the rear of the left and right zipper teeth rows (20, 30). The left and right waterproof strips (40, 50) each have a row of stop holes (90) comprising: a set of first stop holes (91), each of which is filled by a zipper tooth (21, 31); And one or more second stop holes (92), which are disposed rearward compared to the set of first stop holes (91), The connecting sheet (70) is arranged in such a way that it does not cover at least one of the one or more second stop holes (92) included in at least one of the left and right waterproof strips (40, 50), and the rear stop (80) is arranged in such a way that it fills the at least one second stop hole (92). The rear stop (80) includes an upper part (81) and a lower part (82) disposed on the upper and lower sides of the left and right waterproof strips (40, 50), the upper part (81) and the lower part (82) being connected to each other only via one or more filling parts (83), the filling parts (83) filling at least one of the at least one second stop hole (92) of the left and right waterproof strips (40, 50) that is not covered by the connecting sheet (70). The waterproof sliding zipper (1) does not have a through hole that passes through the left and right waterproof strips (40, 50) and the connecting sheet (70) and is filled by the rear stop (80).

2. The waterproof zipper according to claim 1, characterized in that, The upper part (81) and the lower part (82) are connected to each other only by a plurality of filling portions (83) that fill the at least one second stop hole (92) on both sides of the left and right waterproof strips (40, 50) respectively, which are not covered by the connecting sheet (70).

3. The waterproof zipper according to claim 2, characterized in that, A pin hole (85) extending to the connecting sheet (70) is provided at the lower part (82) of the rear stop (80).

4. The waterproof zipper according to any one of claims 1 to 3, characterized in that, On the connecting sheet (70), a recess or notch (76) is provided in such a way that it does not cover at least one of the second stop holes (92) of the left and right waterproof strips (40, 50).

5. The waterproof zipper according to claim 4, characterized in that, The recess or notch (76) is completely filled by the rear stop (80).

6. The waterproof zipper according to claim 4, characterized in that, The recess or notch (76) is provided in such a way that it does not cross the boundary (B1) of the left and right waterproof strips (40, 50) when the left and right zipper teeth (61, 62) are in the closed state.

7. The waterproof zipper according to any one of claims 1 to 3, characterized in that, The second stop hole (92) of the at least one is located at the last end of the stop hole row (90), and no other through holes are formed behind the at least one second stop hole (92).

8. The waterproof zipper according to any one of claims 1 to 3, characterized in that, The number of the second stop hole (92) on each of the left and right waterproof strips (40, 50) is one.

9. The waterproof zipper according to any one of claims 1 to 3, characterized in that, The rear stop (80) is configured to include at least partially the left and right zipper teeth (21, 31) located at the rear end of the left and right zipper tooth rows (20, 30).

10. The waterproof zipper according to any one of claims 1 to 3, characterized in that, The connecting sheet (70) has a gate mark.

11. The waterproof zipper according to claim 10, characterized in that, The rear stop (80) has a gate mark that is different from that of the connecting sheet (70).

12. A method for manufacturing a waterproof zipper (1), wherein, The process includes the following steps: The process of manufacturing zipper tooth rows (20, 30) with zipper teeth (21, 31) arranged on the side edges (41, 51) of waterproof strips (40, 50) for zipper tooth strips (61, 62); The process of forming a connecting sheet (70) on a zipper chain including the zipper teeth (61, 62) pairs; and The process of forming the rear stop (80) on the zipper chain by injection molding On the left and right waterproof strips (40, 50), there are rows (90) of stop holes arranged in a straight line at the same specified interval (P1). Each row of stop holes (90) includes a set of first stop holes (91) and one or more second stop holes (92) disposed rearward compared to the set of first stop holes (91). The connecting sheet (70) is formed by injection molding in a manner that does not cover at least one of the one or more second stop holes (92) included in at least one of the left and right waterproof strips (40, 50), and the rear stop (80) is formed by injection molding in a manner that fills the at least one second stop hole (92). The rear stop (80) includes an upper part (81) and a lower part (82) disposed on the upper and lower sides of the left and right waterproof strips (40, 50), the upper part (81) and the lower part (82) being connected to each other only via one or more filling parts (83), the filling parts (83) filling at least one of the at least one second stop hole (92) of the left and right waterproof strips (40, 50) that is not covered by the connecting sheet (70). The waterproof sliding zipper (1) does not have a through hole that passes through the left and right waterproof strips (40, 50) and the connecting sheet (70) and is filled by the rear stop (80).

13. The method for manufacturing a waterproof zipper according to claim 12, characterized in that, The upper part (81) and the lower part (82) are connected to each other only by a plurality of filling portions (83) that fill the at least one second stop hole (92) on both sides of the left and right waterproof strips (40, 50) respectively, which are not covered by the connecting sheet (70).

14. The method for manufacturing a waterproof zipper according to claim 12 or 13, characterized in that, On the connecting sheet (70), a recess or notch (76) is provided in such a way that it does not cover at least one of the second stop holes (92) of the left and right waterproof strips (40, 50).

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