WO1992017085A1 - Profile de fermeture a glissiere a emboitement par mouvement roulant et curseur associe - Google Patents

Profile de fermeture a glissiere a emboitement par mouvement roulant et curseur associe Download PDF

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Publication number
WO1992017085A1
WO1992017085A1 PCT/US1991/002152 US9102152W WO9217085A1 WO 1992017085 A1 WO1992017085 A1 WO 1992017085A1 US 9102152 W US9102152 W US 9102152W WO 9217085 A1 WO9217085 A1 WO 9217085A1
Authority
WO
WIPO (PCT)
Prior art keywords
slider
elements
tracks
closing
rib
Prior art date
Application number
PCT/US1991/002152
Other languages
English (en)
Inventor
Fox John Herrington
Original Assignee
Mobil Oil Corporation
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 Mobil Oil Corporation filed Critical Mobil Oil Corporation
Priority to PCT/US1991/002152 priority Critical patent/WO1992017085A1/fr
Publication of WO1992017085A1 publication Critical patent/WO1992017085A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
    • 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
    • A44B19/16—Interlocking member having uniform section throughout the length of the stringer
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/26—Sliders
    • A44B19/267—Sliders for slide fasteners with edges of stringers having uniform section throughout the length thereof

Definitions

  • the present invention relates to improvements in plastic reclosable fasteners with sliders particularly suited for thermoplastic bags and the like and particularly to a rolling action zipper profile which closes most easily by pressing it together first at the bottom and then rolling it closed toward the top.
  • Zippers with sliders are made commercially in several forms. The most common ones uses on clothing have teeth which interlock. The teeth may be made of metal or plastic. Other types of plastic zippers have profiles that include a pair of male and female fastener elements in the form of reclosable interlocking rib and groove elements with the slider for opening or closing the rib and groove elements.
  • a pair of these male and female fastener elements extend along the mouth of the bag and these male and female elements are adapted to be secured in any suitable manner to the flexible walls of the thermoplastic film bag. These elements may be integral marginal portions of such walls or they may be extruded separately and thereafter attached to the walls along the mouth of the bag.
  • a method of continuously providing such a fastener on the thermoplastic film is disclosed in U.S. Patent 3,462,332.
  • the sliders for opening or closing the reclosable fasteners are essentially U-shaped and adapted to be assembled with the fastener or zipper by an endwise assembly or by a relative transverse maneuver.
  • the slider is normally molded from a semi-hard plastic where there is enough yieldability in the side walls of the slider to provide sufficient flexibility to enable spreading apart of the terminal portions of the side walls of the slider so as to clear the interlocking rib and groove elements to permit assembly of the slider with the zipper by relative transverse movement.
  • the slider is formed from a metal die-casting or a hard plastic, it has been necessary to rely upon the elastic deformation of the plastic zipper elements to permit the transverse assembly movement of the slider.
  • a method of assembling a plastic slider with a plastic reclosable fastener is disclosed in my related Together Multi-Part Plastic Slider with a Plastic Reclosable Faster, Attorney Docket 5155 filed concurrently herewith.
  • Another method of assembling a plastic slider with a plastic reclosable fastener is disclosed in my related application entitled “Method of Assembling a Multi-Part Plastic Slider with a Plastic Reclosable Fastener by Ultrasonic Welding" Attorney Docket 5154 filed concurrently herewith.
  • a plastic leakproof zipper with slider is disclosed in the related application of F. J. Herrington and E. A. St.
  • a foldable plastic slider for a plastic reclosable fastener is disclosed in the related application of F. J. Herrington and A. Goncarovs entitled “Foldable Plastic Slider and Method of Assembly with a Plastic Reclosable Fastener” Attorney Docket No. 5539 filed concurrently herewith.
  • Another foldable plastic slider is disclosed in my related application entitled “Gull Wing Zipper Slider” Attorney Docket No. 5540 filed concurrently herewith. All of the above-identified related applications and the present application are assigned to the same assignee.
  • a plastic zipper profile located along the top edge of each wall of a plastic bag so that the zipper is opened and closed by passing a slider along the zipper.
  • the cross sectional shape of the plastic zipper profile is such that it can be closed most easily by pressing the bottom together first, then rolling it closed toward the top.
  • the slider is constructed so that it operates in this fashion on the profile, holding the top open while it presses the bottom together, then presses the top together while the slider passes by.
  • the present invention relates to a plastic reclosable fastener with a slider particularly suited for thermoplastic bags and the like comprising a pair of flexible plastic strips having separable plastic means extending along the length thereof comprising reclosable interlocking male and female profile elements on the respective strips, the strips including profiled tracks extending along the length thereof parallel to the male and female elements.
  • the male and female elements have complimentary cross-sectional shape such that they are closed by pressing the bottom of the elements together first and then rolling the elements to a closed position toward the top thereof.
  • a straddling slider is positioned on the tracks for closing or opening the reclosable fastener elements comprising an inverted U-shaped plastic member having a back for moving along the top edges of the tracks with side walls depending therefrom for cooperating with the tracks and extending from an opening end of the slider to a closing end.
  • the side walls have a greater spacing at the opening end than the closing end.
  • a separator finger depends from the back between the side walls and is inserted between the tracks.
  • the separator finger is shaped throughout the length thereof for first holding the top of the male and female elements open while the slider first presses the bottom of the elements together and then permitting the slider to press the top of the elements together while the slider moves in a closing direction.
  • the slider is provided with shoulders projecting inwardly from the depending side walls and shaped throughout the length thereof for cooperation with the depending separator finger in creating the rolling action in opening and closing the reclosable interlocking male and female profile elements.
  • a closure slider for pressing reclosable interlocking male and female profile elements extending longitudinally on the respective strips, the strips including profiled tracks extending along the length thereof parallel to the male and female elements.
  • the male and female elements have complimentary cross-sectional shape such that they are closed by pressing the bottom of the elements together and then rolling the elements to a closed position toward the top thereof.
  • the closure slider comprises a straddling slider positioned on the tracks for closing or opening the reclosable fastener elements comprising an inverted U-shaped plastic member having a back for moving along the top edges of the tracks with the side walls depending therefrom for cooperating with the tracks and extending from an opening end of the slider to a closing end.
  • the side walls have a greater spacing at the opening end and the closing end.
  • a separator finger depends from the back between the side walls and is inserted between the tracks.
  • the separator finger is shaped throughout the length thereof for first holding the top of the male and female elements open while the slider first presses the bottom of the elements together and then permitting the slider to press the top of the elements together while the slider moves in a closing direction.
  • the slider has shoulders projecting inwardly from the depending side walls and shaped throughout the length thereof for cooperating with the depending separator finger in creating the rolling action in opening and closing the reclosable interlocking male and female profile elements.
  • a method of closing a reclosable fastener with a slider wherein the fastener comprises a pair of flexible plastic strips having separable fastener means extending along the length thereof comprising reclosable interlocking rib and groove profile elements on the respective strips.
  • the strips include profile tracks extending along the length thereof parallel to the rib and groove elements, the rib and groove elements having complementary cross-sectional shapes.
  • a straddling slider is positioned on the tracks for closing or opening the reclosable fastener elements comprising an inverted U-shaped plastic member having a back for moving along the top edges of the tracks with side walls depending therefrom for cooperating with the track in extending from an opening end of the slider to a closing end, the side walls having a greater spacing at the opening end than the closing end.
  • a separator finger depends from the back between the side walls and is inserted between the tracks.
  • the method comprises the steps of mainaining the top of the rib and groove elements open with the separator finger inserted between the tracks while the slider first presses the bottom of the elements together and then permitting the slider to press the top of the elements together while the slider moves in a closing direction, and concurrently engaging the strips with shoulders projecting inwardly from the side walls to cooperate with a depending separtor finger in creating the rolling action in opening and closing the reclosable interlocking rib and groove profile elements.
  • Fig. 1 is a perspective view of a thermoplastic bag or the like having a plastic slider assembled on the plastic reclosable fastener at the top edge of the bag in accordance with the present invention.
  • Fig. 2 is a top plan view on enlarged scale of the slider shown in Fig. 1.
  • Fig. 3 is a bottom plan view of the slider shown in Fig. 2.
  • Fig. 4 is a sectional view taken along the lines 4-4 in Fig. 3 including the plastic zipper profile elements.
  • Fig. 5 is a sectional view taken along the lines 5-5 in Fig. 3 including the plastic zipper profile elements.
  • Fig. 6 is a sectional view taken along the lines 6-6 in Fig. 3 including the plastic zipper profile elements.
  • Fig. 7 is a sectional view taken along the lines 7-7 in Fig. 3 including the plastic zipper profile elements.
  • Fig. 8 is an enlarged prospective view of the reclosable fastener with slider shown from the opening end of the slider with part of the female profile element broken away for clarity.
  • a plastic slider 10 and a profiled plastic reclosable fastener or zipper embodying the present invention are particularly suited for thermoplastic bags and the like and the slider 10 has been illustrated in Figs. 1 and 2 assembled on the zipper 11 at the top edge or mouth of a thermoplastic bag B.
  • the bag B may be made from any suitable thermoplastic film such for example as polyethylene or polypropylene or equivalent material.
  • the bag B is formed by a pair of flexible plastic sheets 12 and 13 having a top edge having a pair of flexible plastic strips 14 and 15 having separable plastic means extending along the length thereof comprising reclosable interlocking male and female profile elements in the form of rib and groove elements 16 and 17 on the respective strips.
  • the strips 14 and 15 may be extruded separately and attached to the respective sides of the bag mouth or the strips 14 and 15 may be extruded integral with the sides of the bag mouth.
  • the strips 14 and 15 include profiled tracks 18 and 19 extending along the length thereof parallel to the rib and groove elements 16 and 17 and the rib and groove elements 16, 17 have complimentary cross-sectional shapes such that they are closed by pressing the bottom of the elements together first and then rolling the elements to a closed position toward the top thereof.
  • the rib element 16 is hook shaped and projects from the inner face of strip 14.
  • the groove element 17 includes a lower hook-shaped projection 17a and a relatively straight projection 17b which extend from the inner face of strip 15.
  • the profiled tracks 18 and 19 are inclined inwardly toward each other from their respective strips 14 and 15. This may best be seen by reference to Figs. 4-7.
  • the flexible plastic strips 14 and 15 are separated from each other as are the reclosable interlocking rib and groove profile elements 16 and 17 on the respective strips.
  • the strips 14 and 15 each include one of the profile tracks 18 and 19 extending along the length thereof parallel to the rib and groove elements 16 and 17.
  • the rib and groove elements 16 and 17 have a complementary cross-sectional shape such that they are closed by first pressing the bottom of the elements together as indicated in Fig. 5 and then rolling the elements to a closed position toward the top thereof as shown in Figs. 6 and 7.
  • the rolling action is accomplished by the slider 10 which straddles the track 18 and 19 and is adapted to close or open the rib and groove elements 16 and 17 of the reclosable fastener as now to be described.
  • the straddling slider 10 comprises an inverted U-shaped plastic member having a back 20 for moving along the top edges of the tracks 18 and 19 with side walls 21 and 22 depending therefrom for cooperating with the tracks and extending from an opening end 10a of the slider to a closing end 10b.
  • the side walls 21 and 22 have a greater spacing therebetween at the opening end 10a than at the closing end 10b as may be seen in Figs. 4 and 7.
  • a separator finger 23 depends from the back 20 between the side walls 21 and 22 and is inserted between the inclined tracks 18 and 19. As may be seen in Figs. 3-7 the separator finger 23 is shaped throughout the length thereof for first holding the top of the rib and groove elements 16 and 17 open, Fig.
  • the slider 10 has shoulders 21a and 22a projecting inwardly from the depending side walls 21 and 22 which are shaped throughout the length thereof for cooperation with the depending separator finger 23 in creating the rolling action in opening and closing the reclosable interlocking rib and groove profile elements 16 and 17.
  • the longitudinal axis of the finger 23 is displaced with respect to the axis of the spacing between the shoulders 21a and 22a.
  • the shoulders 21a and 22a are parallel to each other throughout a substantial portion of their length and extending to the closing end 10b of the slider.
  • the shoulders 21a and 22a have different thicknesses and thus different elevations with respect to groove and rib elements 17 and 16.
  • the changing shapes of the depending separator finger 23 and the projecting shoulders 21a and 22a are best seen in Figs. 2-8.
  • the finger 23 has a wider cross-section near the opening end 10a of the slider which engages the inclined tracks 18 and 19 causing them to move apart and straighten while the shoulders 22a and 21a press the strips 14 and 15 close together.
  • This causes the rib 16 to move over the hook-shaped projection 17a and beneath the straight projection 17b.
  • the shoulder 22a has a non-uniform width and projects inwardly in Fig. 5 a greater distance than in Fig. 4.
  • This causes the shoulder 22a to engage the strip 14 opposite the base of rib 16 where it is connected to the strip 14.
  • the shoulder 21a also has a non-uniform width and projects inwardly in Fig. 5 a greater distance than in Fig.
  • the slider 10 may be made in multiple parts and ultrasonically welded together as disclosed in the aforesaid related application Attorneys Docket or the parts may be constructed to be snapped together as disclosed in the aforesaid related application Attorney Docket 5154.
  • the slider 10 may also be of one piece construction such as the foldable plastic sliders disclosed in the aforesaid related applications Attorneys Docket Nos. 5539 and 5540.
  • the novel zipper has been designed for ease of slider movement and for holding force without regard to how easily the rib and groove elements of the zipper snap directly together.
  • This desirable result is derived from the rolling action utilized in opening and closin the zipper.
  • the cross-sectional shape of the zipper is such that it can be closed most easily by pressing the bottom together first, then rolling it closed toward the top.
  • the novel slider is shaped so that it operates in this fashion on the zipper profile, holding the top open while it presses the bottom together, the presses the top together while the slider passes by.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Slide Fasteners (AREA)

Abstract

L'invention se rapporte à un nouveau profilé de fermeture à glissière (11), dans lequel la section transversale de la fermeture à glissière (11) est conçue pour pouvoir être fermée en toute simplicité d'abord par pression de la partie inférieure des éléments (16, 17) en vue de leur assemblage, puis par emboîtement de ladite partie inférieure avec mouvement de fermeture roulant en direction des bords supérieurs (18, 19). Le nouveau curseur (10) est conçu de façon à fonctionner sur le profilé de fermeture à glissière (11) de la manière décrite, pour que les bords supérieurs (18, 19) puissent être maintenus ouverts pendant que la pression d'assemblage s'exerce d'abord sur la partie inférieure des éléments (16, 17) puis sur les bords supérieurs (18, 19) au moment du passage du curseur (10).
PCT/US1991/002152 1991-03-29 1991-03-29 Profile de fermeture a glissiere a emboitement par mouvement roulant et curseur associe WO1992017085A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US1991/002152 WO1992017085A1 (fr) 1991-03-29 1991-03-29 Profile de fermeture a glissiere a emboitement par mouvement roulant et curseur associe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1991/002152 WO1992017085A1 (fr) 1991-03-29 1991-03-29 Profile de fermeture a glissiere a emboitement par mouvement roulant et curseur associe

Publications (1)

Publication Number Publication Date
WO1992017085A1 true WO1992017085A1 (fr) 1992-10-15

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5947603A (en) * 1998-08-04 1999-09-07 Reynolds Consumer Products, Inc. Resealable closure mechanism having a slider device and separate housing
US6247844B1 (en) 1998-11-06 2001-06-19 Reynolds Consumer Products, Inc. Resealable slider closure mechanism with separate plow
US6679027B2 (en) 2000-11-29 2004-01-20 Reynolds Consumer Products, Inc. Resealable closure mechanism having a slider device and methods
US6902321B2 (en) * 1998-06-17 2005-06-07 S2F Flexico Bag having cursor-actuated complementary closure strips with additional leakproofing structure
EP1709883A1 (fr) * 2005-04-08 2006-10-11 S2F Flexico Dispositif destiné à la fermeture de sachets comprenant des moyens contre l'arrachement d'un curseur et sachet équipé
WO2019068418A1 (fr) * 2017-10-06 2019-04-11 Cofresco Frischhalteprodukte Gmbh & Co. Kg Dispositif de fermeture pour un sachet

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1168794A (fr) * 1957-01-25 1958-12-16 Fermeture à curseur ou à la main pour bandes superposées
GB914203A (en) * 1959-03-06 1962-12-28 E P S Res & Dev Ltd Improvements in or relating to sliding-clasp fasteners
US3103049A (en) * 1960-06-21 1963-09-10 E P S Res & Dev Ltd Slide fasteners and protective containers
US3203062A (en) * 1962-09-07 1965-08-31 Ausnit Steven Double hinged fastener
US3220076A (en) * 1963-09-20 1965-11-30 Flexigrip Inc Slide fastener
US3347298A (en) * 1965-10-07 1967-10-17 Minigrip Inc Flexible fastener with unidirectional opening
US3426396A (en) * 1967-03-07 1969-02-11 Leon Ker Laguerre Profiled strip slide fastener
US3462332A (en) * 1965-03-05 1969-08-19 High Polymer Chem Ind Ltd Method of continuously providing a fastener on a thermoplastic film
US3579747A (en) * 1968-02-01 1971-05-25 Eps Research Dev Ltd Strip fasteners
US3660875A (en) * 1968-04-29 1972-05-09 Minigrip Inc Slider for sliding clasp fastener
US3713923A (en) * 1968-02-26 1973-01-30 Minigrip Inc Method of assembling slider with a profiled strip separable fastener
US3790992A (en) * 1971-06-30 1974-02-12 Minigrip Inc Profiled closing members with slide
US3806998A (en) * 1971-02-22 1974-04-30 Minigrip Inc Elastically flexible fastener
US4262395A (en) * 1978-03-09 1981-04-21 Hans Bud Sliding clasp fastening means
US4736451A (en) * 1986-12-22 1988-04-05 Minigrip, Inc. Extruded zipper having combination stabilizing and differential opening means

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1168794A (fr) * 1957-01-25 1958-12-16 Fermeture à curseur ou à la main pour bandes superposées
GB914203A (en) * 1959-03-06 1962-12-28 E P S Res & Dev Ltd Improvements in or relating to sliding-clasp fasteners
US3103049A (en) * 1960-06-21 1963-09-10 E P S Res & Dev Ltd Slide fasteners and protective containers
US3203062A (en) * 1962-09-07 1965-08-31 Ausnit Steven Double hinged fastener
US3220076A (en) * 1963-09-20 1965-11-30 Flexigrip Inc Slide fastener
US3462332A (en) * 1965-03-05 1969-08-19 High Polymer Chem Ind Ltd Method of continuously providing a fastener on a thermoplastic film
US3347298A (en) * 1965-10-07 1967-10-17 Minigrip Inc Flexible fastener with unidirectional opening
US3426396A (en) * 1967-03-07 1969-02-11 Leon Ker Laguerre Profiled strip slide fastener
US3579747A (en) * 1968-02-01 1971-05-25 Eps Research Dev Ltd Strip fasteners
US3713923A (en) * 1968-02-26 1973-01-30 Minigrip Inc Method of assembling slider with a profiled strip separable fastener
US3660875A (en) * 1968-04-29 1972-05-09 Minigrip Inc Slider for sliding clasp fastener
US3806998A (en) * 1971-02-22 1974-04-30 Minigrip Inc Elastically flexible fastener
US3790992A (en) * 1971-06-30 1974-02-12 Minigrip Inc Profiled closing members with slide
US4262395A (en) * 1978-03-09 1981-04-21 Hans Bud Sliding clasp fastening means
US4736451A (en) * 1986-12-22 1988-04-05 Minigrip, Inc. Extruded zipper having combination stabilizing and differential opening means

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6902321B2 (en) * 1998-06-17 2005-06-07 S2F Flexico Bag having cursor-actuated complementary closure strips with additional leakproofing structure
US7517150B2 (en) * 1998-06-17 2009-04-14 S2F Flexico Bag having cursor-actuated complementary closure strips
US5947603A (en) * 1998-08-04 1999-09-07 Reynolds Consumer Products, Inc. Resealable closure mechanism having a slider device and separate housing
US6247844B1 (en) 1998-11-06 2001-06-19 Reynolds Consumer Products, Inc. Resealable slider closure mechanism with separate plow
US6679027B2 (en) 2000-11-29 2004-01-20 Reynolds Consumer Products, Inc. Resealable closure mechanism having a slider device and methods
US6948849B2 (en) 2000-11-29 2005-09-27 Reynolds Consumer Products, Inc. Resealable closure mechanism having a slider device and methods
US7182514B2 (en) 2000-11-29 2007-02-27 Reynolds Consumer Products, Inc. Resealable closure mechanism having a slider device and methods
EP1709883A1 (fr) * 2005-04-08 2006-10-11 S2F Flexico Dispositif destiné à la fermeture de sachets comprenant des moyens contre l'arrachement d'un curseur et sachet équipé
FR2884227A1 (fr) * 2005-04-08 2006-10-13 S2F Flexico Sarl Dispositif destine a la fermeture de sachets comprenant des moyens contre l'arrachement d'un curseur et sachet equipe
US8523438B2 (en) 2005-04-08 2013-09-03 S2F Flexico Device intended for the closure of bags which includes resources that resist the pulling-off of a slider, and bag that is so equipped
WO2019068418A1 (fr) * 2017-10-06 2019-04-11 Cofresco Frischhalteprodukte Gmbh & Co. Kg Dispositif de fermeture pour un sachet

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