US20230397701A1 - Waterproof slide fastener and method of producing the same - Google Patents

Waterproof slide fastener and method of producing the same Download PDF

Info

Publication number
US20230397701A1
US20230397701A1 US18/032,106 US202018032106A US2023397701A1 US 20230397701 A1 US20230397701 A1 US 20230397701A1 US 202018032106 A US202018032106 A US 202018032106A US 2023397701 A1 US2023397701 A1 US 2023397701A1
Authority
US
United States
Prior art keywords
waterproof
securement
fastener
slide fastener
rear stop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US18/032,106
Other languages
English (en)
Inventor
Kazutoshi Mizushima
Daisuke Morimoto
Toshinori Kira
Kazuya Taniguchi
Ryo Mikuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YKK Corp
Original Assignee
YKK Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YKK Corp filed Critical YKK Corp
Assigned to YKK CORPORATION reassignment YKK CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIRA, Toshinori, MIKUMA, RYO, MIZUSHIMA, KAZUTOSHI, MORIMOTO, DAISUKE, TANIGUCHI, KAZUYA
Publication of US20230397701A1 publication Critical patent/US20230397701A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/34—Stringer tapes; Flaps secured to stringers for covering the interlocking members
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/32—Means for making slide fasteners gas or watertight
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/36—Means for permanently uniting the stringers at the end; Means for stopping movement of slider at the end
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/38—Means at the end of stringer by which the slider can be freed from one stringer, e.g. stringers can be completely separated from each other
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
    • A44B19/60—Applying end stops upon stringer tapes

Definitions

  • the present disclosure relates to waterproof slide fastener and method of producing the same.
  • a sheet member is laminated onto a bottom surface of a fastener tape (particularly onto its waterproof layer) by using a technique of high frequency welding, followed by a through hole formed that penetrates the fastener tape and the sheet member, and followed by a stop member formed through injection molding at a place where the through hold is formed.
  • patent literature 2 discloses an injection molding through which a stop member is formed in which sheet member is incorporated/integrated.
  • a stop member which has a main body for stopping a slider and an extension extending from the main body.
  • This literature discloses that fist through-holes are formed for fastener elements and second through-holes are formed for the stop member (See FIG. 3 of the same literature).
  • Patent literature 3 also discloses an injection molding through which a stop member is formed in which a sheet member is incorporated/integrated (See FIG. 6 and para. 0042 of the same literature).
  • Waterproof slide fastener may include: left and right fastener stringers including left and right waterproof tapes and left and right rows of fastener elements where fastener elements are arranged, the left and right rows of fastener elements secured to side-edges of the left and right waterproof tapes, and each of the left and right waterproof tapes including a row of securement holes including a linear arrangement of securement holes at a predetermined pitch; an interconnection sheet that joins the left and right waterproof tapes in a rear end of the waterproof slide fastener; and a rear stop arranged at a rear contiguous position of the left and right rows of fastener elements.
  • the row of securement holes in each of the left and right waterproof tapes includes a multiplicity of first securement holes and one or plural second securement holes arranged on a side of the rear stop relative to the multiplicity of first securement holes, respective ones of the first securement holes filled by respective ones of the fastener elements.
  • the interconnection sheet is arranged to expose at least one second securement hole in at least one of the left and right waterproof tapes, and the rear stop is arranged to fill said at least one second securement hole.
  • the rear stop includes an upper portion and a lower portion which are arranged at upper and lower sides of the left and right waterproof tapes, and the upper portion and the lower portion are interconnected one another via a plurality of plugs only, the plurality of plugs respectively filling the one or plural second securement holes in both of the left and right waterproof tapes.
  • Pinhole may be formed in the lower portion of the rear stop, the pinhole extending to reach the interconnection sheet
  • a recess or a cutout is formed in the interconnection sheet to expose the one or plural second securement holes in at least one of the left and right waterproof tapes.
  • the recess or the cutout may be fully filled by the rear stop.
  • the recess or the cutout may be formed not to cross a boundary between the left and right waterproof tapes in a closed condition of the left and right fastener stringers.
  • the one or plural second securement holes are positioned at a rearmost position in the row of securement holes.
  • Number of the second securement hole in each one of the left and right waterproof tapes may be one.
  • the rear stop may be configured to enclose, at least partially, left and right fastener elements positioned at the rear end of the left and right rows of fastener elements.
  • Gate mark may be formed on the interconnection sheet. Another gate mark different from the one formed on the interconnection sheet may be formed on the rear stop.
  • a method of producing a waterproof slide fastener includes: producing a fastener stringer wherein a row of fastener element where fastener elements are arranged is secured to a side-edge of a waterproof tape; forming an interconnection sheet onto a fastener chain including a pair of the fastener stringers; and forming a rear stop onto the fastener chain through injection molding.
  • Rows of securement holes each of which including a linear arrangement of securement holes at a predetermined pitch are formed in the respective ones of left and right waterproof tapes.
  • the respective rows of securement holes include a multiplicity of first securement holes and one or plural second securement holes arranged on a side of the rear stop relative to the multiplicity of first securement holes.
  • the interconnection sheet is formed through injection molding to expose at least one second securement hole in at least one of the left and right waterproof tapes.
  • the rear stop is formed through injection molding to fill said at least one second securement hole.
  • the rear stop includes an upper portion and a lower portion which are arranged at upper and lower sides of the left and right waterproof tapes, and the upper portion and the lower portion are interconnected one another via a plurality of plugs only, the plurality of plugs respectively filling the one or plural second securement holes in both of the left and right waterproof tapes.
  • a recess or a cutout is formed in the interconnection sheet to expose the one or plural second securement holes in at least one of the left and right waterproof tapes.
  • FIG. 1 is a schematic top view of a waterproof slide fastener according to an aspect of the present disclosure.
  • FIG. 2 is a schematic bottom view illustrating a rear end of the waterproof slide fastener.
  • FIG. 3 is a schematic partial top view of a left fastener stringer, dash circles denote securement holes formed at a constant pitch in the fastener tape.
  • FIG. 4 is a schematic cross-sectional view taken along an alternate long and short dash line IV-IV in FIG. 3 .
  • FIG. 5 is a schematic bottom view of the rear end of the slide fastener, schematically illustrating a relationship among first and second securement holes, an interconnection sheet and a rear stop.
  • FIG. 6 is a schematic cross-sectional view taken along an alternate long and short dash line VI-VI in FIG. 5 .
  • FIG. 7 is a schematic cross-sectional view taken along an alternate long and short dash line VII-VII in FIG. 5 .
  • FIG. 8 is a schematic cross-sectional view taken along an alternate long and short dash line VIII-VIII in FIG. 5 .
  • FIG. 9 is a production process diagram of a waterproof tape, illustrating a process of extrusion.
  • FIG. 10 illustrates a process of perforation for forming a row of securement holes.
  • FIG. 11 illustrates a process of injection molding to form the fastener elements.
  • FIG. 12 illustrates a process of injection molding of the interconnection sheet.
  • FIG. 13 illustrates a process of injection molding of the rear stop.
  • FIG. 14 is a reference diagram illustrating a state in which the fastener elements are formed.
  • FIG. 15 is a reference diagram illustrating a state in which the interconnection sheet is formed.
  • FIG. 16 is a reference diagram illustrating a state in which the rear stop is formed.
  • FIG. 17 is a schematic view of a modified example of interconnection sheet.
  • FIG. 18 is a schematic view of a modified example of interconnection sheet.
  • FIG. 19 is a schematic view of a modified example of interconnection sheet.
  • FIG. 20 is a schematic view of a modified example regarding rows of securement holes.
  • front-rear direction would be understood based on a direction of movement of slider.
  • Left-right direction is orthogonal to the front-rear direction and parallel to a plane in which fastener tapes exist.
  • Up-down direction is orthogonal to the front-rear and left-right directions.
  • the directions defined here might be redefined differently in light of the following descriptions.
  • a waterproof slide fastener 1 (hereinafter simply referred to as a slide fastener 1 ) is a belt-like member elongated in the front-rear direction and having a narrow width in the left-right direction, and attached to an opening in garments or bags so as to open or close the opening. Normally, there would be no chance for water to flow into the inside via the slide fastener 1 when the slide fastener 1 is closed, because the slide fastener 1 is waterproof.
  • the slide fasteners 1 are typically attached to the opening of garments or bags by a process such as thermal pressure bonding, thermal welding or sewing.
  • the slide fastener 1 has left and right fastener stringers 61 and 62 in which left and right rows 20 and 30 of fastener elements are secured onto side-edges 41 and 51 of the left and right waterproof tapes 40 and 50 ; and a slider 11 that moves frontward to engage the left and right fastener elements 21 and 31 of the left and right rows 20 and 30 of fastener elements and moves rearward to disengage the left and right fastener elements 21 and 31 .
  • the slider 11 is made of plastic or metal, and has a top wing, a bottom wing, and a coupling pillar coupling these wings.
  • the slider 11 would be one which is normally employed and thus further detail descriptions of its configuration would be omitted.
  • Front stop 12 is arranged at a front end of the slide fastener 1 (a position frontward of and adjacent to the left and right rows 20 , 30 of fastener elements).
  • Rear stop 80 is arranged at a rear end of the slide fastener 1 (at a rear contiguous position of the left and right rows 20 and 30 of fastener elements).
  • the front stop 12 and the rear stop 80 are formed by injection molding of thermoplastic plastic material (e.g. polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, or polycarbonate).
  • the front stop may be configured as disclosed in the patent literature 3, for example.
  • the configuration of the rear stop 80 would be discussed below.
  • the front and rear stops 12 and 80 serve not only to block the movement of slider 11 but also to ensure the waterproofness by joining the left and right waterproof tapes 40 and 50 .
  • the waterproof tape 40 , 50 includes a tape main portion 42 , 52 with upper and lower surfaces in which embossed patterns are formed (See FIG. 3 ).
  • the side-edge 41 , 51 is positioned inwardly of the left-right direction of the tape main portions 42 , 52 .
  • the waterproof tape 40 , 50 has a tape base fabric 43 covered by a waterproof layer 44 (See FIG. 4 ).
  • the tape base fabric 43 is formed to be a woven or knitted structure or mixed structure of the two.
  • the waterproof layer 44 is formed to cover the tape base fabric 43 , thus allowing waterproofness.
  • the waterproof layer 44 may be made of thermoplastic elastomer, for example.
  • a row 90 of securement holes is formed in which securement holes 91 , 92 are linearly arranged at a predetermined pitch P 1 (See FIGS. 3 and 5 ).
  • Each of the rows 90 of securement holes includes a multiplicity of first securement holes 91 (See FIG. 3 ) where the first securement holes 91 are filled by the fastener elements 21 , 31 respectively.
  • each of the rows 90 of securement holes includes one or plural second securement holes 92 (See FIG. 5 ) arranged on a side of the rear stop 80 relative to the multiplicity of first securement holes 91 .
  • the first securement holes 91 are formed for the fastener elements respectively, and the second securement holes 92 are formed for the rear stop 80 . Therefore, the number of the first securement hole 91 is greater than the number of the second securement holes 92 .
  • the first and second securement holes 91 and 92 have a same aperture shape and a same aperture diameter.
  • the second securement hole is positioned at the rearmost end of the row of securement holes and/or the number of the second securement hole is one.
  • the fastener elements 21 and 31 are formed by injection molding of thermoplastic plastic material (e.g. polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, or polycarbonate), and the first securement holes 91 are filled by the plastic material.
  • the fastener element 21 , 31 adheres to the waterproof tape 40 , 50 and would not rotate easily about the first securement hole 91 .
  • the respective ones of fastener elements are arranged corresponding to the respective ones of the first securement holes. Therefore, in each of the rows 20 , 30 of fastener elements, the fastener elements 21 , 31 are arranged at a predetermined pitch P 1 which is equal to the pitch of the securement holes 91 , 92 .
  • the fastener element 21 , 31 has a base portion 22 , a head 23 , and a neck 24 interposed between the base portion 22 and the head 23 (See FIG. 3 ).
  • Groove 21 j extending in the front-rear direction is formed in the end face of the head 23 , and the (inward) edge of the waterproof tape 40 , 50 (in the left-right direction) is arranged to protrude from the bottom of the groove 21 j (See FIG. 4 ).
  • the fastener element 21 , 31 has a shoulder 25 having a thinner thickness arranged at the both sides of the neck 24 in the front-rear direction, and fins 26 having a thinner thickness and extending from the base portion 22 outward of the left-right direction.
  • the shoulder 25 is inserted into the groove 21 j of the head 23 of the cooperating fastener element for engagement.
  • the fins 26 are inserted into a space between upper and lower flanges (not illustrated) of the slider 11 .
  • the head 23 of the fastener element 21 is sandwiched between the heads of adjacent fastener elements 31 at front and rear sides.
  • the head of the fastener element 31 is sandwiched between the heads 23 of adjacent fastener elements 21 at front and rear sides.
  • the left and right fastener elements 21 , 31 are engaged as such, allowing the side edge 41 c of the waterproof tape 40 and the side edge of the waterproof tape 50 being brought into pressure contact.
  • These side edges may be referred to as tape-joining side edges.
  • the fastener element 21 , 31 has element upper and lower portions 27 and 28 arranged at upper and lower sides of the waterproof tape 40 , 50 , and a plug 29 filling the first securement hole 91 (See FIG. 4 ).
  • the element upper and lower portions 27 and 28 are interconnected one another via only one plug 29 .
  • the element upper portion 27 includes upper halves of the head, the neck and the base portion.
  • the element lower portion 28 includes lower halves of the head, the neck and the base portion.
  • an interconnection sheet 70 is arranged in the rear end of the slide fastener 1 (positioned rearward of and adjacent to the left and right rows 20 , 30 of fastener elements).
  • the interconnection sheet 70 is made of plastic material (e.g. thermoplastic plastic such as polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, or polycarbonate) which is the same or different material as the material of the rear stop 80 . Suitable material could be selected for the plastic material of the interconnection sheet 70 which enables deformation (e.g. bending or flexing) of the interconnection sheet 70 following the waterproof tape.
  • the interconnection sheet 70 could have a moderate degree of softness. In some cases, the softness of the interconnection sheet 70 is greater than that of the rear stop 80 , but should not necessarily be limited to this.
  • the interconnection sheet 70 is arranged to cross the boundary B 1 between the left and right waterproof tapes 40 and 50 and to cover the lower surfaces of the left and right waterproof tapes 40 and 50 .
  • Suitable material would be selected for the plastic material of the rear stop 80 which could endure repeating collisions or contacts with the slider 11 .
  • the rear stop 80 could have sufficient hardness and mechanical strength. In some cases, the hardness or mechanical strength of the rear stop 80 is greater than that of the interconnection sheet 70 , but should not necessarily be limited to this. Embodiments are envisaged where the softness of the rear stop 80 is equal to or higher than that of the interconnection sheet 70 .
  • the rear stop 80 includes upper and lower portions 81 and 82 arranged at upper and lower sides of the left and right waterproof tapes 40 and 50 .
  • the upper portion 81 and the lower portion 82 are interconnected one another by a plurality of plugs 83 by which one or plural second securement holes 92 in the left and right waterproof tapes 40 and 50 are filled.
  • the rear stop 80 is configured to enclose at least partially the left and right fastener elements 21 , 31 positioned at the rear end of the left and right rows 20 and 30 of fastener elements. This may suppress the exposure of the tape-joining side edges of the left and right fastener tapes.
  • the lower portion 82 of the rear stop 80 covers the interconnection sheet 70 , and there is no gap between the rear stop 80 and the interconnection sheet 70 .
  • the interconnection sheet 70 and the rear stop 80 are formed separately or by two-steps of injection molding, allowing use of different suitable material for the interconnection sheet 70 and the rear stop 80 as discussed above. Furthermore, separate gate marks are formed between the interconnection sheet 70 and the rear stop 80 . Note that a gate mark is formed by cutting a solidified plastic between a mold cavity and a gate. Treatment (such as polishing) to make the gate mark less visible might be applicable.
  • the second securement hole 92 may possibly be closed by the interconnection sheet 70 , depending to a position of the interconnection sheet 70 . In cases where the interconnection sheet 70 is formed by injection molding, the unintentional closure of the second securement hole 92 would be avoided or suppressed by its positioning in the mold.
  • interconnection sheet 70 it might be possible to laminate the interconnection sheet 70 onto the waterproof tape by using the high frequency welding technique as long as it is ensured that the second securement hole 92 is not covered by the interconnection sheet 70 .
  • the interconnection sheets 70 may possibly shrink and change in its size.
  • the interconnection sheet 70 with a recess were to be produced, it might change in its shape when melting and adhering, and might result in its unintentional deformation, making it more difficult to adhere the interconnection sheet 70 as intended.
  • the interconnection sheet 70 is arranged to expose at least one second securement hole 92 in at least one of the left and right waterproof tapes 40 and 50
  • the rear stop 80 is arranged to fill the at least one second securement holes 92 .
  • Recess or cutout 76 may be formed in the interconnection sheet 70 to expose the at least one second securement hole 92 in at least one of the left and right waterproof tapes 40 and 50 (See FIG. 5 ).
  • the interconnection sheet 70 can be positioned as close as possible to the rows 20 and 30 of fastener elements, reducing possibility of water leak through the boundary B 1 between the waterproof tapes 40 and 50 in a location between the interconnection sheet 70 and the left and right rows 20 and 30 of fastener elements.
  • the recess or cutout 76 is fully filled by the rear stop 80 (the plastic material of the rear stop 80 ) and does not appear on the exterior of the slide fastener 1 .
  • the rear stop 80 has a filling portion 84 that fills the recess or cutout 76 , and the filling portion 84 is connected to the plug 83 filling the second securement hole 92 (See FIG. 6 ). Note that, there may be concern of induced water leak if the recess or cutout 76 were exposed outside of the rear stop 80 .
  • the recess or cutout 76 is formed not to cross the boundary B 1 between the left and right waterproof tapes 40 and 50 in a closed condition of the left and right fastener stringers 61 and 62 . This allows reduced possibility of water leak through the boundary B 1 otherwise caused when the recess or cutout 76 were arranged on the boundary B 1 .
  • Pinhole 85 is formed in the lower portion 82 of the rear stop 80 which extends to reach the waterproof tape 40 , 50 or the interconnection sheet 70 .
  • a pinhole 85 is formed in the upper portion 81 of the rear stop 80 which extends to reach the waterproof tape 40 , 50 . This suppresses flapping of the waterproof tapes 40 , 50 during the injection molding of the rear stop 80 .
  • a waterproof tape is produced by extrusion as shown in FIG. 9 .
  • a tape base fabric 43 is supplied to a mold 101 , and the upper and lower surfaces and the side edge 41 c of the tape base fabric 43 are covered by melted elastomer filling a supply channel in the mold 101 .
  • the elastomer cures to be the waterproof layer 44 .
  • the waterproof tape is perforated as shown in FIG. 10 .
  • the waterproof tape is supplied directly under perforation punches 102 , and the perforation punches 102 are moved down to form the first and second securement holes 91 and 92 .
  • the waterproof tape is sandwiched between a pressure roll 104 and a driving roll 105 and transferred downstream in accordance with rotation of the driving roll 105 .
  • the downward motion of the perforation punches 102 is in synchronization with a downstream transfer of a predetermined length of the waterproof tape, allowing the securement holes be formed at a predetermined pitch P 1 .
  • a stage 103 may be employed in which cylindrical holes are arranged into which the punches 102 are inserted respectively. Waste fragments caused by the piercing will be collected by a box located beneath the stage 103 .
  • the fastener elements are formed through injection molding as shown in FIG. 11 .
  • the waterproof tape with the first and second securement holes 91 and 92 is interposed between a lower mold 106 and an upper mold 107 , and melted plastic is supplied into a mold cavity 108 defined by the molds 106 and 107 through a channel (sprue, runner and gate) to form the fastener elements.
  • the lower and upper molds 106 and 107 are cooled, allowing the melted plastic in the mold cavity 108 be solidified.
  • the fastener elements filling the first securement holes 91 and the fastener stringer with such fastener elements arranged at a predetermined pitch are produced.
  • the lower and upper molds 111 and 112 shown in FIG. 12 are used to produce the interconnection sheet 70 through injection molding.
  • the fastener stringers produced as described above are engaged to be a fastener chain, and the chain is arranged in a recess on the top surface of the lower mold 111 .
  • the upper mold 112 is stacked onto the lower mold 111 , defining a mold cavity 70 ′ for molding the interconnection sheet 70 .
  • Melted plastic is supplied to the mold cavity 70 ′ via a channel (sprue, runner and gate), and the lower and upper molds 111 and 112 are cooled and thus the interconnection sheet 70 is formed.
  • the interconnection sheet 70 is formed through injection molding, more reliably preventing the second securement hole 92 from being closed by the interconnection sheet 70 .
  • the lower and upper molds 113 and 114 shown in FIG. 13 are used to produce the rear stop 80 through injection molding.
  • the fastener chain in which the left and right fastener stringers are coupled by the interconnection sheet 70 is arranged in a recess on the top surface of the lower mold 113 .
  • the upper mold 114 is stacked onto the lower mold 113 , defining a mold cavity 80 ′ for molding the rear stop 80 .
  • Melted plastic is supplied to the mold cavity 80 ′ via a channel (sprue, runner and gate), and the lower and upper molds 113 and 114 are cooled, thus forming the rear stop 80 .
  • the mold cavity 80 ′ includes a first space 81 ′ in which the upper portion 81 of the rear stop 80 is molded and a second space 82 ′ in which the lower portion 82 of the rear stop 80 is molded. These first and second spaces 81 ′ and 82 ′ are in spatial communication via the second securement hole(s) 92 (functioning as cavity communication channel). Therefore, the melted plastic can communicate between the first and second spaces via the second securement hole(s) 92 even a gate provided on only one of the lower and upper molds.
  • the interconnection sheet is formed through injection molding to join the left and right waterproof tapes 40 and 50 in the fastener chain (see FIGS. 14 and 15 ).
  • the interconnection sheet 70 is formed not to close the respective second securement holes 92 in the left and right waterproof tapes 40 and 50 . Therefore, a process of perforation to form a through-hole penetrating through the waterproof tape and the interconnection sheet could be omitted, or the number of through-hole could be reduced even if such a process of perforation were conducted.
  • the rear stop 80 is formed through injection molding, and the rear stop 80 is formed to enclose at least partially the left and right fastener elements 21 and 31 positioned at the rear end of the left and right rows 20 and 30 of fastener elements (see FIG. 16 ). Further, the lower portion 82 of the rear stop 80 is formed to cover the front end portion of the interconnection sheet 70 . Still further, a pinhole 85 extending to reach the interconnection sheet 70 is formed in the lower portion 82 of the rear stop 80 .
  • a cutout 76 may be formed in the interconnection sheet 70 as shown in FIG. 17 . Similar technical effects as discussed above would be achieved even in such an embodiment.
  • the cutout 76 is shaped to form a step at the front edge of the interconnection sheet 70 .
  • the cutout 76 does not cross the boundary B 1 between the left and right waterproof tapes 40 and 50 , ensuring firmer joining of the left and right waterproof tapes 40 and 50 .
  • the cutout 76 may be formed in the interconnection sheet 70 as shown in FIG. 18 . Similar technical effects as discussed above would be achieved even in such an embodiment.
  • the cutout 76 is shaped to form a V-groove at the front edge of the interconnection sheet 70 .
  • the cutout 76 crosses the boundary B 1 between the left and right waterproof tapes 40 and 50 , but is fully filled by the rear stop 80 . Therefore, a given level of waterproofness of the waterproof tapes 40 and 50 would be ensured.
  • one securement hole 92 ′ which is used as the second securement hole 92 in the above embodiments, is closed by the interconnection sheet 70 .
  • the rear stop 80 is arranged to fill just one second securement hole 92 .
  • the interconnection sheet 70 is formed to cover or fill third securement holes 93 which are different from the first and second securement holes in the rows of securement holes. It should be noted that redundant perforation of the waterproof tape 40 , 50 may be undesirable as possibly leading to deteriorated waterproofness.

Landscapes

  • Slide Fasteners (AREA)
  • Making Paper Articles (AREA)
US18/032,106 2020-10-15 2020-10-15 Waterproof slide fastener and method of producing the same Pending US20230397701A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/038990 WO2022079873A1 (ja) 2020-10-15 2020-10-15 防水性スライドファスナー及びその製造方法

Publications (1)

Publication Number Publication Date
US20230397701A1 true US20230397701A1 (en) 2023-12-14

Family

ID=81208970

Family Applications (1)

Application Number Title Priority Date Filing Date
US18/032,106 Pending US20230397701A1 (en) 2020-10-15 2020-10-15 Waterproof slide fastener and method of producing the same

Country Status (6)

Country Link
US (1) US20230397701A1 (ja)
JP (1) JP7496887B2 (ja)
CN (1) CN116113344A (ja)
DE (1) DE112020007681T5 (ja)
GB (1) GB2614997A (ja)
WO (1) WO2022079873A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230309663A1 (en) * 2020-08-27 2023-10-05 Ykk Corporation Slide fastener chain and slide fastener

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007215819A (ja) * 2006-02-17 2007-08-30 Ykk Corp 防水性スライドファスナーの下止
WO2011077570A1 (ja) 2009-12-25 2011-06-30 Ykk株式会社 スライドファスナー
GB2512792B (en) * 2012-01-30 2018-01-10 Ykk Corp Waterproof slide fastener
WO2019180758A1 (ja) 2018-03-19 2019-09-26 Ykk株式会社 スライドファスナー
CN210329599U (zh) * 2019-08-23 2020-04-17 东莞市翼隆实业有限公司 一种拉链端止成型结构
CN110859366A (zh) * 2019-11-29 2020-03-06 东莞市翼隆实业有限公司 一种防水拉链及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230309663A1 (en) * 2020-08-27 2023-10-05 Ykk Corporation Slide fastener chain and slide fastener
US11969061B2 (en) * 2020-08-27 2024-04-30 Ykk Corporation Slide fastener chain and slide fastener

Also Published As

Publication number Publication date
CN116113344A (zh) 2023-05-12
GB2614997A (en) 2023-07-26
JP7496887B2 (ja) 2024-06-07
GB202305413D0 (en) 2023-05-31
DE112020007681T5 (de) 2023-08-03
WO2022079873A1 (ja) 2022-04-21
JPWO2022079873A1 (ja) 2022-04-21

Similar Documents

Publication Publication Date Title
CN1883329B (zh) 拉链
EP3231312B1 (en) Method for manufacturing watertight zipper
US9440385B2 (en) Resin molded article with a stitch pattern
EP2508096A1 (en) Liquid-tight slide fastener and manufacturing method therefor
JP5311096B2 (ja) ジップファスナー用止具
JP5847658B2 (ja) 樹脂成形品の製造方法
US20230397701A1 (en) Waterproof slide fastener and method of producing the same
ES2359088T3 (es) Procedimiento y dispositivo para la fabricación de una pieza moldeada con varias zonas decorativas diferentes adyacentes.
JP2013086369A (ja) 樹脂成形品およびその製造方法
JP7001812B2 (ja) スライドファスナー
TWI465208B (zh) A fastener element and a method for manufacturing the same, and a mold and an injection molding apparatus
KR100455709B1 (ko) 개방이탈 삽입구가 부착된 슬라이드 파스너와 그 제조방법
TWI526167B (zh) The opening of the opening and closing of the zipper, and the method of manufacturing the open tail
JP2020100134A (ja) 車両用装飾部品及びその２色射出成形方法
CN116234672A (zh) 防水性拉链牙链带及其制造方法
JP2008049603A (ja) 成形品の製造方法
TWI543720B (zh) Zipper, mold device, and zipper slide manufacturing method
WO2024089902A1 (ja) スライドファスナー及びスライドファスナー用開離嵌挿具の箱の製造方法
US11071357B2 (en) Slide fastener and method for manufacturing same
WO2021038843A1 (ja) 面ファスナー及び面ファスナーの製造方法
JP5697241B2 (ja) 樹脂成形品の製造方法
JP2000050914A (ja) テープ付き係脱具の製造方法と同成形金型及びテープ付き係脱具
JPH07290497A (ja) 樹脂製品の成形方法及び成形用金型装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: YKK CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MIZUSHIMA, KAZUTOSHI;MORIMOTO, DAISUKE;KIRA, TOSHINORI;AND OTHERS;SIGNING DATES FROM 20230410 TO 20230411;REEL/FRAME:063332/0111

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION