WO2001094225A1 - Dispositif de fermeture - Google Patents

Dispositif de fermeture Download PDF

Info

Publication number
WO2001094225A1
WO2001094225A1 PCT/US2000/015564 US0015564W WO0194225A1 WO 2001094225 A1 WO2001094225 A1 WO 2001094225A1 US 0015564 W US0015564 W US 0015564W WO 0194225 A1 WO0194225 A1 WO 0194225A1
Authority
WO
WIPO (PCT)
Prior art keywords
slider
side rib
fastening strips
fastening
elevated
Prior art date
Application number
PCT/US2000/015564
Other languages
English (en)
Inventor
Alan F. Savicki, Sr.
Original Assignee
The Glad Products Company
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 The Glad Products Company filed Critical The Glad Products Company
Priority to PCT/US2000/015564 priority Critical patent/WO2001094225A1/fr
Priority to AU2000253262A priority patent/AU2000253262A1/en
Publication of WO2001094225A1 publication Critical patent/WO2001094225A1/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
    • B65D33/2589—Bag or slide fastener details cooperating with the slider, e.g. details for removing or installing the slider

Definitions

  • the present invention relates generally to closure devices and, more particularly, to a slider and interlocking fastening strips utilizing altered side ribs for a leak- proof closure.
  • the invention is particularly well suited for fastening flexible storage containers, including plastic bags .
  • closure devices for fastening storage containers, including plastic bags, is generally known.
  • closure devices made of plastic materials is generally known to those skilled in the art, as demonstrated by the numerous patents in this area.
  • closure devices are in connection with flexible storage containers, such as plastic bags.
  • the closure device and the associated container are formed from thermoplastic materials, and the closure device and the sidewalls of the container are integrally formed by extrusion as a single piece.
  • the closure device and sidewalls of the container may be formed as separate pieces and then connected by heat sealing or any other suitable connecting process. In either event, such closure devices are particularly useful in providing a closure means for retaining matter within the bag.
  • Conventional closure devices typically utilize mating fastening strips or closure elements, which are used to selectively seal the bag.
  • Sliders may be provided for use in opening and closing the fastening strips.
  • the sliders may include a separator which extends at least partially between the fastening strips. When the slider is moved in the appropriate direction, the separator divides the fastening strips and opens the bag.
  • the closure device comprises first and second interlocking fastening strips arranged to be interlocked over a predetermined length and the fastening strips have side ribs disposed along their length.
  • the closure device additionally includes a slider which is slidably disposed on the interlocking fastening strips for facilitating the occlusion and deocclusion of the fastening strips when moved towards first and second ends of the fastening strips.
  • the side ribs act as a guide rail for the slider and to prevent the slider from being removed from the fastening strips. Additionally, the ribs are formed such that they allow the ⁇ slider to be partially elevated above the fastening strips at the first end to prevent the separator from deoccluding the fastening strips at the first end.
  • Fig. 1 is a perspective view of a container according to the present invention in the form of a plastic bag
  • Fig. ' 2 is a fragmentary side view of the container in Fig. 1;
  • Fig. 3 is a cross-sectional .view taken along line 3-3 in Fig. 2;
  • Fig. 4 is a cross-sectional view taken along line 4-4 in Fig. 2/
  • Fig. 5 is a fragmentary side view of the container in ' Fig. 1;
  • Fig. 6 is a cross-sectional view taken along line.6-6 in Fig. 5;
  • Fig. 7 is a cross-sectional view taken along line 7-7 in Fig. 5;
  • Fig. 8 is a side view of another embodiment of the container;
  • Fig. 9 is a cross-sectional view taken along line 9-9 in Fig. 8;
  • Fig. 10 is a cross-sectional view taken along line 10- 10 in Fig. 8;
  • Fig. 11 is a fragmentary side view of another embodiment
  • Fig. 12 is a cross-sectional view taken along line 12-
  • Fig. 13 ' is a cross-sectional view taken along line 13-
  • Fig. 14 is a fragmentary side view of the embodiment in Fig. 11;
  • Fig. 15 is a cross-sectional view taken along line 15- 15 in Fig. 14;
  • Fig. 16 is a cross-sectional view taken along line 16- 16 in Fig. 14;
  • Fig. 17 is a cross-sectional view of fastening strips
  • Fig. 18 is a cross-sectional view of another embodiment
  • Fig. 19 is a cross-sectional view of another embodiment; and Fig. 20 is a cross-sectional view of another embodiment .
  • Figs. 1-4 illustrates an embodiment of a container in the form of a plastic bag 120 having a sealable closure device 121.
  • the bag 120 includes a first sidewall 122 and a second sidewall 123 joined at seams 125, 126 to define a compartment accessible through the open top end but sealable by means of the- closure device 121.
  • the closure device 121 includes first and second fastening strips 130, 131 and a slider 132.
  • the fastening strips 130, . 131 and the slider 132 have a longitudinal X axis 102, a transverse Y axis 104 and a .vertical Z axis 106.
  • the transverse Y axis 104 is perpendicular to the longitudinal X axis 102.
  • the vertical Z axis 106 is perpendicular to the longitudinal X axis 102 and the vertical Z axis 106 is perpendicular to the transverse Y axis 104.
  • the , fastening strips 130, 131 ' are adapted to be
  • the fastening strips 130, 131 include side ribs . 135, 136 disposed along the length of the fastening strips 130, 131 between the first and second ends 127, 128.
  • the side ribs 135, 136 include elevated portions 137, 138 near the first end 127.
  • the slider 132 is mounted onto the fastening strips 130, 131 so that the slider 132 is restrained from being removed from the fastening strips 130, 131 by the side rib 135, but free to slide along the X axis 102.
  • the .slider 132 engages the fastening strips 130, 131 so that when the slider 132 moves in an occlusion direction 114, the fastening strips 130, 131 occlude and the bag 120 is sealed, and when the slider 132 moves in a deocclusion direction 116, the fastening strips 130, 131 deocclude and the bag 120 is open.
  • Figs. ' 2-4 illustrates a partial side view of the container and illustrates the slider 132 and fastening strips 130, 131.
  • the side ribs 135, 136 are disposed along the fastening strips 130, 131 parallel to the X axis 102.
  • the fastening strips 130, 131 have a bottom edge 115 and a top edge 117.
  • the side ribs 135, 136 include the elevated portions 137, 138.
  • the elevated portions 137, 138 are placed at a distance 139 relative to the remaining portions of the side ribs 135, 136.
  • the slider 132 includes a separator 142 having a first end and a second end where ' in the first end is wider than the second end.
  • the separator 142 is generally triangular in shape and deoccludes the fastening strips when moved in the deocclusion direction.
  • Figs. 3 and 4 illustrate cross-sectional views taken at two points along the slider 132 as shown in Fig. 2.
  • Fig. 3 depicts the fastening strips 130, 131 in the occluded position.
  • the shoulders 144, 146 of the slider 132 engage and follow along the side ribs 135, 136.
  • Fig. 4 depicts the fastening strips 130, 131 in the deoccluded position.
  • the wider end of the separator 142 deoccludes the fastening strips 130, 131.
  • Fig. 5 illustrates a fragmentary side view of the container and illustrates the slider 132 moved fully in the occlusion direction and near the- first end 127.
  • the wider first end of the separator 142 has a tendency to deocclude the fastening strips 130, 131 as shown in Fig. 4.
  • the elevated portions ' 137, 138 of the side ribs 135, 136 allow the fastening strips to force the slider upwards in the direction of the top edge 117. •
  • the upward movement of the .slider raises the separator 142 partially above the fastening strips 130, 131 a distance 152.
  • the separator ⁇ is not able to deocclude the fastening strips 130, 131.
  • the elevated portions 137, 138 prevent the separator from deoccluding the fastening strips.
  • the distance 152 that the separator is raised is approximately the same as distance 139 which is the height of the elevated portion.
  • the distance 139 may be approximately the same as the height 154 of the separator as' shown in Fig. 4.
  • Figs. 6 and 7 illustrate cross-sectional views taken at two points along the slider 132 in Fig. 5.
  • Fig. 6 depicts a situation similar to that of Fig. 3. However, in this case the slider is positioned over the elevated portions 137, 138 of the side ribs on the fastening strips 130, 131.
  • Fig. 7 depicts a situation similar to that of Fig. 4. With the slider over the elevated portions 137, 138, the separator 142 is raised enough above the fastening strips 130, 131 to prevent the wider end of the separator 142 from disengaging the fastening strips 130, 131.
  • Fig. 8 illustrates a partial side view of another embodiment of the fastening strips 230, 231.
  • the fastening strips 230, 231 include a first, second, third and fourth side ribs 235, 236-, " 245, 246 as shown in Figs. 8-10.
  • the first side rib 235 includes an elevated portion 237.
  • the second side rib 236 includes an elevated portion 238.
  • the third side rib 245 includes elevated portion 260.
  • the fourth side rib 246 includes elevated portion 262.
  • the elevated portions 237, 238, 260, 262 are raised in the direction of the top edge 217.
  • the shoulders 254, 256 are positioned between the side ribs as shown in Figs. 9 and 10.
  • the third and fourth ribs 245, 246 and elevated portions 260, 262 are included to further facilitate the guidance of the slider 232 and to move the slider in the upward direction in the Z axis 106.
  • Figs. 11-16 illustrate another embodiment.
  • the fastening strips 330, 331 include a first, second, third and fourth side ribs 335, 336, 345, 346 as shown in Figs. 11-13.
  • the third rib 345 includes a flattened area 340 near the end
  • the flattened area 340 creates an elevated portion 337, between the first rib 335 and the third rib 345 with a distance 339.
  • the fourth rib 346 may include a flattened area 341 which creates an elevated portion 338.
  • the flattened area may be created by using heat sealing, ultrasonic sealing or mechanical high pressure flattening without heat.
  • Figs. 12 and 13 illustrate cross—sectional views taken at two points along the slider 332 as shown in Fig. 11.
  • Fig. 12 depicts the fastening strips 330, 331 in the occluded position.
  • the shoulders 354, 356 of the slider 332 engage and follow along the ' side ribs 345, 346.
  • Fig. 13 depicts the fastening strips 330, 331 in the deoccluded position.
  • the separator 342 deoccludes the fastening strips 330, 331.
  • Fig. 14 illustrates a fragmentary side view of the container and illustrates the slider 332 moved fully in the occlusion direction and near the first end 327.
  • the separator 342 has a tendency to deocclude the fastening strips 330, 331 as shown in Fig. 13.
  • the- elevated portions 337, 338 allow the fastening strips to force- the slider upwards in the direction of the top edge 317.
  • the upward movement of' the slider raises the separator 342 partially above the fastening strips 330 . , 331 a distance 352.
  • the separator 342 is raised, the separator is not able to deocclude the fastening strips 330, 331.
  • the elevated portions 337, 338 prevent the separator from deoccluding the fastening strips.
  • the distance 352 that the separator is ' raised is approximately • the same as distance.339 which is the height of the elevated portion.
  • the distance 339- may be approximately the same as the height 354 of the separator as shown in Fig. 13.
  • Figs. 15 and 16 illustrate cross-sectional views taken at two points along the slider 332 in Fig. 14.
  • Fig. 15 depicts a situation similar to that of Fig. 12. However, in this case the slider is positioned over the elevated portions 337, 338 on the fastening strips 330, 331.
  • Fig. 16 depicts a situation similar to that of Fig. 13. With the slider over the elevated portions 337,- 338, the separator 342 is raised enough above the fastening strips 330, 331 to prevent the separator 342 from disengaging the fastening strips 330, 331.
  • the interlocking fastening strips may be of a different type or form.
  • the fastening strips may be U- channel fastening strips as described in U.S. Patent 4,829,641.
  • U-channel fastening strips include a first fastening strip 430 with a first closure element 436 and a second fastening strip 431 with a second closure element 434.
  • the first closure element 436 engages the second closure element 434.
  • the first fastening strip 430 may include a flange 463 disposed at the upper end of the first fastening strip 430 and a rib 467 disposed at the lower end of the first fastening strip 430.
  • the first fastening strip 430 may include a flange portion 469.
  • the second fastening strip 431 may include a flange 453 disposed at the upper end of the second fastening strip 431 and a rib 457 disposed at the lower end of the second fastening strip 431.
  • the second fastening strip 431 may include a flange portion 459.
  • the side walls 422, 423 of- the plastic bag 420 may be attached to the fastening strips 430, 431 by ' conventional manufacturing techniques .
  • the second closure element 434 includes a base portion 438 having a pair of spaced-apart parallely disposed webs 440, 441, extending from the base portion 438.
  • the base and the .webs form a U-channel closure element.
  • the webs 440 include hook closure portions 442, 444 extending from the webs 440, 441 respectively, and facing towards each other.
  • the hook closure portions 442, v 444 include guide surfaces 446, 447 which serve to • guide the hook> closure portions 442, 444 for occluding with the hook closure portions 452, 454 of the first closure element 436.
  • the first closure element 436 includes a base portion 448 including a pair of spaced-apart, parallely- disposed webs
  • the base, and the webs form a U-channel closure element.
  • the webs 450, 451 include hook closure portions 452, 454 extending from the webs 450, 451 respectively and facing away from each other.
  • the hook closure portions 452, 454 include guide surfaces
  • the guide surfaces 445, 455 may also have a rounded crown surface.
  • the slider 432 includes a top portion 472.
  • the top portion provides a separator 443 having a first end and a second end wherein the first end may be wider than the second end.
  • the separator 443 may be triangular in shape.
  • the rib element 505 interlocks with the groove element 507.
  • the rib element 505 is of generally arrow-shape in transverse cross section including a head 510. comprising interlock shoulder hook portions 511 and 512 generally convergently related to provide a cam ridge 513 generally aligned with a stem flange 514 ,by which the head is connected in spaced relation' with respect to the supporting flange portion 508.
  • Said hook flanges generally converge toward one another and are spread open to receive the head 510 therebetween when said head is pressed into said groove element 507 until the head is fully received in a groove 518 of said groove element 507 generally complementary to the • head and within which the head is interlocked- by interengagement of the head shoulder hook portions 511 and 512 and the groove hook flanges 515 and 517.
  • the slider 519 includes a flat back plate 520 adapted to run along free edges 521 on the upper ends of the sections of the flange portions 508 and 509 as shown in the drawing.
  • U.S. Patent 3,806,998, Col. 2, lines 41-46 Integrally formed with the back plate 520 and extending in the same direction (downwardly as shown) therefrom are respective coextensive side walls 522 with an -intermediate spreader finger 523 extending in the same direction as the side walls at one end of the slider.
  • U.S. Patent 3,806,998, Col. 2, lines 46-51) Integrally formed with the back plate 520 and extending in the same direction (downwardly as shown) therefrom are respective coextensive side walls 522 with an -intermediate spreader finger 523 extending in the same direction as the side walls at one end of the slider.
  • the side walls 522 are in the form of panels which are laterally divergent from a narrower end of the slider.
  • the slider walls 522 are each provided with an inwardly projecting shoulder structure 524 flange adapted to. engage respective shoulder ribs 525 and 527 on respectively outer sides of the lower section of the flange portions 508 . and 509. (U.S. Patent 3,806,998, Col. 2, line 66 to Co. 3, line 3) .
  • the interlocking fastening strips may comprise "profile" fastening strips, as shown in Fig. 19 and described in U.S. Patent 5,664,299.
  • the first profile 616 has at least an -uppermost closure element 616a and a bottommost closure element 616.fo.
  • the closure elements 616a and 616j project laterally from the inner surface of strip 614.
  • the second profile 617 has at least an uppermost closure element 617a and a bottommost closure element 611b. (U.S. Patent 5,664,299, Col. 3, lines 28-30). The .
  • closure elements 617a and 617J project laterally from /the inner surface of strip 615.
  • U.S. Patent 5,664,299, Col. 3,- lines 30-32 When the bag is closed, the closure elements of profile 616 interlock with the corresponding closure elements of profile 617.
  • U.S. Patent 5,664,299, Col. 3, lines 32- 34 closure elements 616a, 616b, 617a and 611b have hooks on the ends of the closure elements, so that the profiles remain interlocked when the bag is closed, thereby forming a seal.
  • U.S. Patent 5,664,299, Col. 3, • lines 34-37 U.S. Patent 5,664,299, Col. 3, • lines 34-37
  • the straddling slider 610 comprises an inverted U-- shaped member having a top 620 for moving along the top edges of the strips 614 and 615.
  • the slider 610 has side walls 621 and . 622 depending from the top 620.
  • a separating leg 623 depends from the top 620 between the side walls 621 and 622 and is located between the uppermost closure elements 616a and 617a of profiles 616 and 617.
  • the fastening assembly includes ridges 625 on the outer surfaces of the fastening strips 614 and 615, and shoulders 62123 and
  • interlocking fastening strips may be "rolling action" fastening strips as shown in Fig. 20 and described in U.S.. Patent 5,007,143.
  • the strips 714 and 715 include profiled tracks 718 and 719 extending along the length thereof parallel to the ib and groove elements 716 and 717 and the rib and groove elements 716, 717 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 clo.sed position toward the top thereof.
  • the rib element 716 is hook shaped and projects from the inner face of strip 714.
  • the groove element 717 includes a lower hook- shaped projection 717a and a relatively straight projection 717i ⁇ which extend from- the inner face of strip 715.
  • the profiled tracks 718 and 719 are inclined inwardly toward each other from their respective strips 714 and 715. (U.S. Patent 5,007,143, Col. 5, lines 6-8) .
  • the straddling slider 710 comprises an inverted U- shaped- plastic member having a back 720 for moving along the top edges of the tracks 718 and 719 with side walls 721 and 722 depending therefrom for cooperating with the tracks and extending from an opening end of the slider to a closing end.
  • a separator finger 723 depends from the back 720 between the side walls 721 and 722 and ' is inserted between the inclined tracks 718 and 719.
  • U.S. Patent 5,007,143, Col. 5, lines 34-36 The slider 710 has shoulders 721a and 722a projecting inwardly from the depending side walls 721 and 722 which are shaped throughout the length thereof . for cooperation with the depending separator finger 723 in creating the rolling action in opening and closing the reclosable interlocking rib and groove profile elements 716 and 717.
  • U.S. Patent 5,007,143, Col. 5, lines 43-49 U.S. Patent 5,007,143, Col. 5, lines 43-49.
  • thermoelectric device may be applied to a film in contact with the flange portion of the fastening strips or the thermoelectric device may be applied to a film in contact with the base portion of fastening strips having no flange portion, to cause 'a transfer of heat through the film to produce melting at the interface of the film and a flange portion or base portion of the fastening strips.
  • Suitable thermoelectric devices include heated rotary discs, traveling heater bands, resistance-heated slide wires, and the like.
  • the connection between the film and the fastening strips may also be established by the use of hot melt adhesives, hot jets of air to the interface, ultrasonic heating, or other known methods.
  • the beading of the fastening strips to the film stock may be carried out either before or after the film is U-folded to form the bag. In any event, such bonding is done prior to side sealing the bag at the edges by conventional thermal cutting.
  • the first and second fastening strips may be positioned on opposite sides of the film. Such an embodiment would be suited for wrapping an object -or a collection of objects such as wires.
  • the first and second fastening strips should usually be -positioned on. the film in a generally parallel relationship with respect to each other, although this will depend on the intended use.
  • the slider may be multiple parts and snapped together. In addition, the slider may be made from multiple parts and fused or welded together.
  • the slider ' may also be a one piece construction.
  • the slider can be colored, opaque, translucent or transparent.
  • the slider may be injection molded or made by any other method.
  • the slider may be molded from any suitable plastic material, such as, nylon, polypropylene, 18
  • polystyrene acetal, toughened acetal, polyketone, polybutylene terrephthalate, high density polyethylene, polycarbonate or ABS (acrylonitrile-butadiene-styrene) .

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

Abstract

L'invention concerne un dispositif de fermeture (121) comportant des bandes d'attache d'interverrouillage (130, 131) et un curseur (132). Les bandes d'attache présentent une première extrémité (127) et une deuxième extrémité (128). Le curseur présente une première position dans laquelle le curseur est disposé à distance de la première extrémité, et une deuxième position dans laquelle le curseur est disposé à proximité de la première extrémité. La deuxième position est surélevée par rapport à la première position. Dans un mode de réalisation, les bandes d'attache comportent une nervure latérale (135, 136) surélevée à proximité d'une première extrémité. Le curseur comporte un séparateur désenclenchant les bandes d'attache. La partie surélevée (137, 138) est disposée à proximité de la première extrémité (127) de manière que le séparateur puisse être levé au dessus des bandes d'attache afin d'éviter que le séparateur désenclenche les bandes d'attache.
PCT/US2000/015564 2000-06-06 2000-06-06 Dispositif de fermeture WO2001094225A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2000/015564 WO2001094225A1 (fr) 2000-06-06 2000-06-06 Dispositif de fermeture
AU2000253262A AU2000253262A1 (en) 2000-06-06 2000-06-06 Closure device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/015564 WO2001094225A1 (fr) 2000-06-06 2000-06-06 Dispositif de fermeture

Publications (1)

Publication Number Publication Date
WO2001094225A1 true WO2001094225A1 (fr) 2001-12-13

Family

ID=21741462

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/015564 WO2001094225A1 (fr) 2000-06-06 2000-06-06 Dispositif de fermeture

Country Status (2)

Country Link
AU (1) AU2000253262A1 (fr)
WO (1) WO2001094225A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107074405A (zh) * 2014-10-17 2017-08-18 斯蒂芬·G.·阿姆斯特朗 用于袋的具有滑动件的闭合件

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259951A (en) * 1964-07-15 1966-07-12 Merle A Zimmerman Slide fastener
US5020194A (en) * 1990-03-07 1991-06-04 Mobil Oil Corporation Leakproof zipper with slider

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259951A (en) * 1964-07-15 1966-07-12 Merle A Zimmerman Slide fastener
US5020194A (en) * 1990-03-07 1991-06-04 Mobil Oil Corporation Leakproof zipper with slider

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107074405A (zh) * 2014-10-17 2017-08-18 斯蒂芬·G.·阿姆斯特朗 用于袋的具有滑动件的闭合件
EP3206961A4 (fr) * 2014-10-17 2018-03-21 Stephen G. Armstrong Fermeture de sac avec un curseur

Also Published As

Publication number Publication date
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