EP0127186B1 - Slide fastener stringer - Google Patents
Slide fastener stringer Download PDFInfo
- Publication number
- EP0127186B1 EP0127186B1 EP84106200A EP84106200A EP0127186B1 EP 0127186 B1 EP0127186 B1 EP 0127186B1 EP 84106200 A EP84106200 A EP 84106200A EP 84106200 A EP84106200 A EP 84106200A EP 0127186 B1 EP0127186 B1 EP 0127186B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- legs
- connecting portions
- extending
- slide fastener
- strip
- 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.)
- Expired
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/24—Details
- A44B19/40—Connection of separate, or one-piece, interlocking members to stringer tapes; Reinforcing such connections, e.g. by stitching
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
- A44B19/14—Interlocking member formed by a profiled or castellated edge
Definitions
- the present invention relates to slide fasteners, and more particularly to a slide fastener stringer having a continuous zigzag-shaped thermoplastic molded coupling element strip attached to a stringer tape along a longitudinal edge thereof.
- Japanese Utility Model Laid-Open Publication (Jikkaisho) 58-55513 discloses a slide fastener stringer in which, as illustrated in Figures 10 and 11 of the accompanying drawings, a continuous zigzag-shaped strip 53 of thermoplastic molded coupling elements 55 is attached to a stringer tape 52 along a longitudinal edge thereof by sewn stitches 54.
- the successive coupling elements 55 are interconnected by a plurality of thermoplastic molded connecting portions 56 alternately disposed at opposite sides of the strip 53 and extending one between each adjacent pair of the coupling elements 55.
- each connecting portion 56 terminates in a combined foot which is chamfered at 56b, thus having only a small contact area engageable with the guide flange 64 of one corresponding wing 63a of the slider 63.
- the uncoupled individual coupling elements which are about to enter the Y-shaped guide channel 66 of the slider 63, would tend to easily roll or turn facewise of the fastener as the strip 53 is twisted, causing non-smooth closing operation of the slide fastener.
- the individual connecting portions 56 are less resistant to wearing, making the individual coupling elements 55 and thus the slide fastener less durable.
- the individual connecting portion has a uniform thickness equal to the thickness of the adjacent coupling element leg portions and hence has relatively high rigidity, the prior stringer is poor in flexibility, also causing non-smooth coupling-and-uncoupling operation of the slide fastener.
- the invention seeks to provide a slide fastener stringer having a zigzag-shaped thermoplastic molded coupling element strip which has not only adequate flexibility but also good durability, thus enabling smooth and sure coupling operation of the slide fastener, at which time a row of coupling elements is bent arcuately away from the coupling elements of a companion stringer in conformity with the Y-shaped guide channel of a slider without rolling of the uncoupled individual coupling elements that are about to enter the slider.
- a slide fastener stringer comprising:
- EP-A-0 088 354 which, pursuant to Article 54(3) EPC,is comprised in the state of the art discloses a similar slide fastener except that the opposite ends of the combined foot extending between two adjacent interconnected legs are chamfered.
- Figures 1 and 2 illustrate a pair of coupled slide fastener stringers 1, I, each comprising a stringer tape 2 and a continuous zigzag-shaped molded coupling element strip 3 attached to the tape 2 along an inner longitudinal edge thereof by sewn threads 4, the strip 3 being folded on itself along its longitudinal centerline.
- the coupling element strip 3 is continuously produced on a rotating die wheel (not shown) having an endless zigzag-shaped peripheral cavity receptive of heated thermoplastic synthetic resin, such as polyamid, delivered from a fixed extrusion nozzle (not shown) and, before having been bent into a U-shaped cross section ( Figures 2, 3 and 4), it has a continuous flat zigzag-shaped structure.
- the thus folded strip 3 includes a series of laterally spaced coupling elements 5 interconnected by a plurality of first and second solid connecting portions 6, 7 alternately disposed at opposite sides of the strip 3 and extending one between each adjacent pair of the coupling elements 5.
- Each coupling element 5 has a head 8 and a pair of first and second legs 9, 10 extending from the head 8 in a common direction and terminating in their respective feet 9a, 10a ( Figure 4).
- Each first connecting portion 6 extends between an adjacent pair of the first legs 9, 9 and is disposed close to the feet 9a, 9a thereof, and each second connecting portion 7 extends between an adjacent pair of the second legs 10, 10 and is disposed close to the feet 10a, 10a thereof.
- the first and second connecting portion 6, 7 are thinner or more slender than the first and second legs 9, 10, and are disposed on the respective inner sides of the first and second legs 9,10 to provide a recess or bay 6', 7' ( Figure 3) between each adjacent pair of the coupling elements 5, as viewed in an edgewise direction of the stringer 1.
- a pair of first and second connector threads 11, 12 extends transversely of the successive coupling elements 5 along the entire length of the strip 3 and is embedded in the first and second legs 9, 10, respectively, of each coupling element 5.
- Each of the first and second connector threads 11, 12 is disposed close to and extends alongside a respective one of the two series of the first and second connecting portions 6, 7, being disposed close to the side thereof which faces the coupling heads 8.
- the first and second connector threads 11, 12 are disposed on the respective inner sides of the first and second legs 9, 10.
- the leg 9, 10 of each coupling element 5 has a generally trapezoidal shape, as viewed in plan ( Figure 3), having a width increasing progressively from the coupling head 8 toward the foot 9a, 10a.
- the foot 9a, 10a of each leg 9, 10 has a sufficiently large contact area engageable with a respective one of a pair of flaring guide flanges 14, 14 of a slider 13 when the opposed stringers 1, 1 of a slide fastener are being coupled or uncoupled.
- Each coupling element 5 can be prevented from turning or rolling facewise of the slide fastener stringer 1 when a thrusting force is exerted on the slide fastener in a facewise direction thereof ( Figures 10 and 11), partly because of such large contact area of the foot 9a, 10a and- partly because outer corners or opposite ends 9b, 9b; 10b, 10b of a combined broad foot extending between the two adjacent interconnected legs 9, 9; 10,10, respectively, are not chamfered, having no sloping or round surfaces.
- This broad foot makes the corresponding coupling elements 5 less abrasive, guaranteeing improved durability of the coupling element strip 3 and thus of the slide fastener stringer 1.
- the coupling element strip 3 has not only adequate flexibility but also good durability; the solid slender connecting portions 6, 7 and the connecting threads 11,12 close thereto coact to produce such advantageous characteristics.
- This construction enables the coupling element strip 3 to be bent arcuately away from the corresponding strip 3 of a companion stringer 1 in conformity with the curvature of the respective guide flange 14 of the slider 13 when the opposed stringers 1, 1 of the slide fastener are being coupled or uncoupled, as shown in Figures 5.
- the connector threads 11, 12, which are disposed close to the respective sides of the connecting portions 6, 7 which sides are facing the heads 8, serve to prevent the slender connecting portions 6, 7 from being excessively bent and thus from being broken or otherwise damaged.
- fastener stringer 1 Another advantage of the fastener stringer 1 is that since the first and second slender connecting portion 6, 7 are disposed on the respective inner sides of the first and second legs 9, 10 to provide the bay 6', 7' ( Figure 3) between each adjacent pair of the coupling elements 5, the stringer 1 and thus the coupling element stringer 1. At that time, the first (upper) connecting portions 6 are bent so as to expand the upper bays 6 and, on the contrary, the second (lower) connecting portion 7 are bent so as to shrink the lower bays 7'. At the same time, the inter-coupling-element portions of the first (upper) connector thread 11 are expanded and, on the contrary, the inter-coupling-element portions of the second (lower) connector thread 12 are compressed.
- the connector threads 11, 12 facilitate expansion of the connecting portions 6, 7, thus preventing the latter from being broken.
- the connecting portions 6, 7 in turn protect the connector threads 11, 12 from sudden undue stress, thus preventing the connector threads 11, 12 either from being broken or from being removed from the coupling element legs 9, 10.
Description
- The present invention relates to slide fasteners, and more particularly to a slide fastener stringer having a continuous zigzag-shaped thermoplastic molded coupling element strip attached to a stringer tape along a longitudinal edge thereof.
- Japanese Utility Model Laid-Open Publication (Jikkaisho) 58-55513 discloses a slide fastener stringer in which, as illustrated in Figures 10 and 11 of the accompanying drawings, a continuous zigzag-
shaped strip 53 of thermoplastic moldedcoupling elements 55 is attached to astringer tape 52 along a longitudinal edge thereof bysewn stitches 54. Thesuccessive coupling elements 55 are interconnected by a plurality of thermoplastic molded connectingportions 56 alternately disposed at opposite sides of thestrip 53 and extending one between each adjacent pair of thecoupling elements 55. The two adjacent legs (of adjacent coupling elements 55) interconnected by each connectingportion 56 terminate in a combined foot which is chamfered at 56b, thus having only a small contact area engageable with theguide flange 64 of onecorresponding wing 63a of theslider 63. With this limited contact area of the combined foot, the uncoupled individual coupling elements which are about to enter the Y-shaped guide channel 66 of theslider 63, would tend to easily roll or turn facewise of the fastener as thestrip 53 is twisted, causing non-smooth closing operation of the slide fastener. For the same reason, the individual connectingportions 56 are less resistant to wearing, making theindividual coupling elements 55 and thus the slide fastener less durable. - Further, because the individual connecting portion has a uniform thickness equal to the thickness of the adjacent coupling element leg portions and hence has relatively high rigidity, the prior stringer is poor in flexibility, also causing non-smooth coupling-and-uncoupling operation of the slide fastener.
- The invention seeks to provide a slide fastener stringer having a zigzag-shaped thermoplastic molded coupling element strip which has not only adequate flexibility but also good durability, thus enabling smooth and sure coupling operation of the slide fastener, at which time a row of coupling elements is bent arcuately away from the coupling elements of a companion stringer in conformity with the Y-shaped guide channel of a slider without rolling of the uncoupled individual coupling elements that are about to enter the slider.
- According to the present invention, there is provided a slide fastener stringer comprising:
- (a) a stringer tape;
- (b) a continuous zigzag-shaped thermoplastic molded coupling element strip attached to said stringer tape on and along one longitudinal edge thereof, said strip including
- (1) a succession of laterally spaced coupling elements, each having a head and a pair of first and second legs extending from said head in a common direction, and
- (2) a plurality of first and second connecting portions alternately disposed at opposite sides of said strip and extending one between each adjacent pair of said coupling elements, each of said first connecting portions extending between an adjacent pair of said first legs, each of said second connecting portions extending between an adjacent pair of said second legs;
- (c) the two adjacent legs which are interconnected by each said connecting portion jointly terminating in a combined foot, the opposite ends of the combined foot extending between two adjacent interconnected legs being substantially squared; and
- (d) a pair of connector threads extending transversely of said coupling elements along the entire length of said strip and embedded in said first and second, legs, respectively, of each said coupling element, each of said connector threads being disposed close to and extending alongside a respective one of such two series of said first and second connecting portions.
- EP-A-0 088 354 which, pursuant to Article 54(3) EPC,is comprised in the state of the art discloses a similar slide fastener except that the opposite ends of the combined foot extending between two adjacent interconnected legs are chamfered.
- Many other advantages, features and additional objects of the invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying drawings in which a preferred embodiment incorporating the principles of the invention is shown by way of illustrative example.
- Figure 1 is a fragmentary plan view of a pair of interengaged slide fastener stringers, each embodying the present invention;
- Figure 2 is a cross-sectional view taken along line II-II of Figure 1;
- Figure 3 is a fragmentary perspective view of a continuous molded coupling element strip;
- Figure 4 is a cross-sectional view taken along line IV-IV of Figure 3;
- Figure 5 illustrates the manner in which the opposed coupling element strips are bent in opposite edgewise directions as they are being coupled by a slider;
- Figures 6, 7, 8 and 9 are cross-sectional views taken along lines VI-VI, XII-XII, XIII-XIII and IX-IX, respectively, of Figure 5; and
- Figures 10 and 11 illustrate a prior art problem.
- Figures 1 and 2 illustrate a pair of coupled
slide fastener stringers 1, I, each comprising astringer tape 2 and a continuous zigzag-shaped moldedcoupling element strip 3 attached to thetape 2 along an inner longitudinal edge thereof bysewn threads 4, thestrip 3 being folded on itself along its longitudinal centerline. - The
coupling element strip 3 is continuously produced on a rotating die wheel (not shown) having an endless zigzag-shaped peripheral cavity receptive of heated thermoplastic synthetic resin, such as polyamid, delivered from a fixed extrusion nozzle (not shown) and, before having been bent into a U-shaped cross section (Figures 2, 3 and 4), it has a continuous flat zigzag-shaped structure. The thus foldedstrip 3 includes a series of laterally spacedcoupling elements 5 interconnected by a plurality of first and second solid connectingportions strip 3 and extending one between each adjacent pair of thecoupling elements 5. Eachcoupling element 5 has ahead 8 and a pair of first andsecond legs head 8 in a common direction and terminating in theirrespective feet portion 6 extends between an adjacent pair of thefirst legs feet portion 7 extends between an adjacent pair of thesecond legs feet - As best shown in Figures 2 and 4, the first and second connecting
portion second legs second legs coupling elements 5, as viewed in an edgewise direction of thestringer 1. - A pair of first and
second connector threads successive coupling elements 5 along the entire length of thestrip 3 and is embedded in the first andsecond legs coupling element 5. Each of the first andsecond connector threads portions coupling heads 8. As shown in Figures 2, 3 and 4, the first andsecond connector threads second legs - The
leg coupling element 5 has a generally trapezoidal shape, as viewed in plan (Figure 3), having a width increasing progressively from thecoupling head 8 toward thefoot foot leg flaring guide flanges slider 13 when theopposed stringers coupling element 5 can be prevented from turning or rolling facewise of the slide fastener stringer 1 when a thrusting force is exerted on the slide fastener in a facewise direction thereof (Figures 10 and 11), partly because of such large contact area of thefoot opposite ends interconnected legs corresponding coupling elements 5 less abrasive, guaranteeing improved durability of thecoupling element strip 3 and thus of theslide fastener stringer 1. - Further, partly because the connecting
portions legs connector threads portions coupling element strip 3 has not only adequate flexibility but also good durability; the solid slender connectingportions threads coupling element strip 3 to be bent arcuately away from thecorresponding strip 3 of acompanion stringer 1 in conformity with the curvature of therespective guide flange 14 of theslider 13 when theopposed stringers connector threads portions heads 8, serve to prevent the slender connectingportions - Another advantage of the
fastener stringer 1 is that since the first and second slender connectingportion second legs coupling elements 5, thestringer 1 and thus the coupling element stringer 1. At that time, the first (upper) connectingportions 6 are bent so as to expand theupper bays 6 and, on the contrary, the second (lower) connectingportion 7 are bent so as to shrink the lower bays 7'. At the same time, the inter-coupling-element portions of the first (upper)connector thread 11 are expanded and, on the contrary, the inter-coupling-element portions of the second (lower)connector thread 12 are compressed. Accordingly, theconnector threads portions portions connector threads connector threads coupling element legs coupling elements 5 is guaranteed for a long time.
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1983083820U JPS59189506U (en) | 1983-06-01 | 1983-06-01 | Slide fastener |
JP83820/83U | 1983-06-01 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0127186A2 EP0127186A2 (en) | 1984-12-05 |
EP0127186A3 EP0127186A3 (en) | 1986-09-03 |
EP0127186B1 true EP0127186B1 (en) | 1988-11-02 |
Family
ID=13813323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84106200A Expired EP0127186B1 (en) | 1983-06-01 | 1984-05-30 | Slide fastener stringer |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0127186B1 (en) |
JP (1) | JPS59189506U (en) |
KR (1) | KR850003198Y1 (en) |
AU (1) | AU545773B1 (en) |
BR (1) | BR8402692A (en) |
CA (1) | CA1253314A (en) |
DE (1) | DE3474901D1 (en) |
ES (1) | ES279586Y (en) |
GB (1) | GB2140864B (en) |
HK (1) | HK92288A (en) |
ZA (1) | ZA843948B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100413122B1 (en) * | 2001-08-24 | 2003-12-31 | 이종하 | Slide fastener manufactory machine |
EP1511895B1 (en) * | 2002-06-10 | 2008-10-15 | Huntsman Advanced Materials (Switzerland) GmbH | Method of dyeing or printing synthetic polyamide fibre materials using reactive dyes |
GB2619343A (en) * | 2022-06-01 | 2023-12-06 | Ykk Europe Ltd | Method of manufacturing a slide fastener |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3328857A (en) * | 1965-12-23 | 1967-07-04 | Scovill Manufacturing Co | Zipper fastener stringer |
US4171556A (en) * | 1976-09-17 | 1979-10-23 | Textron Inc. | Slide fastener with molded elements and method of manufacture |
JPS6030202B2 (en) * | 1980-08-01 | 1985-07-15 | ワイケイケイ株式会社 | Woven slide fastener |
JPS58134915U (en) * | 1982-03-08 | 1983-09-10 | ワイケイケイ株式会社 | Slide fasteners with continuous synthetic resin fastener element rows |
-
1983
- 1983-06-01 JP JP1983083820U patent/JPS59189506U/en active Granted
-
1984
- 1984-05-24 ZA ZA843948A patent/ZA843948B/en unknown
- 1984-05-28 CA CA000455243A patent/CA1253314A/en not_active Expired
- 1984-05-29 KR KR2019840005055U patent/KR850003198Y1/en not_active IP Right Cessation
- 1984-05-29 AU AU28794/84A patent/AU545773B1/en not_active Ceased
- 1984-05-30 BR BR8402692A patent/BR8402692A/en unknown
- 1984-05-30 EP EP84106200A patent/EP0127186B1/en not_active Expired
- 1984-05-30 DE DE8484106200T patent/DE3474901D1/en not_active Expired
- 1984-05-31 ES ES1984279586U patent/ES279586Y/en not_active Expired
- 1984-06-01 GB GB08413981A patent/GB2140864B/en not_active Expired
-
1988
- 1988-11-17 HK HK922/88A patent/HK92288A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BR8402692A (en) | 1985-05-07 |
GB2140864A (en) | 1984-12-05 |
GB8413981D0 (en) | 1984-07-04 |
AU545773B1 (en) | 1985-08-01 |
JPS6330245Y2 (en) | 1988-08-15 |
DE3474901D1 (en) | 1988-12-08 |
EP0127186A2 (en) | 1984-12-05 |
HK92288A (en) | 1988-11-25 |
ES279586Y (en) | 1985-10-01 |
CA1253314A (en) | 1989-05-02 |
ES279586U (en) | 1985-03-01 |
GB2140864B (en) | 1986-09-17 |
KR850003198Y1 (en) | 1985-12-28 |
EP0127186A3 (en) | 1986-09-03 |
KR850007934U (en) | 1985-10-26 |
ZA843948B (en) | 1985-01-30 |
JPS59189506U (en) | 1984-12-15 |
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