WO2002009549A1 - Dispositif de fermeture - Google Patents
Dispositif de fermeture Download PDFInfo
- Publication number
- WO2002009549A1 WO2002009549A1 PCT/US2000/020422 US0020422W WO0209549A1 WO 2002009549 A1 WO2002009549 A1 WO 2002009549A1 US 0020422 W US0020422 W US 0020422W WO 0209549 A1 WO0209549 A1 WO 0209549A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slider
- rib
- fastening
- end stop
- fastening strips
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 9
- 239000004033 plastic Substances 0.000 description 9
- -1 for example Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001470 polyketone Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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
-
- 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 generally to closure devices and, more particularly, to fastening strips and a slider.
- 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.
- a slider may be provided for use in opening and closing the fastening strips.
- the slider 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 slider is able to move along the fastening strips.
- the slider may be removed from the end of the fastening strips unless a system is provided to prevent removal .
- the present invention prevents removal of the slider from the end of the fastening strips.
- the closure device includes interlocking fastening strips.
- the closure device also includes a slider 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 fastening strips include one or more ribs disposed laterally along the length of the fastening strips.
- the fastening strip includes an end stop at the end of the fastening strip.
- the slider engages the end stop and limits movement of the slider along the horizontal axis. The end stop prevents removal of the slider from the end of the f stening strips .
- 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 front 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 cross sectional view of another embodiment of slider and fastening strips
- Fig. 6 is a cross sectional view of the fastening strips in Fig. 5 taken near the end of the fastening strips;
- Fig. 7 is a cross sectional view of another embodiment of slider and fastening strips
- Fig. 8 is a cross sectional view of the embodiment in Fig. 7 taken near the end of the fastening strips;
- Fig. 9 is a cross-sectional view of another embodiment of fastening strips and a slider.
- Fig. 10 is a cross-sectional view of another embodiment of fastening strips and a slider.
- Fig. 11 is a cross-sectional view of another embodiment of fastening strips and a slider.
- Fig. 1 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 interlocked between a first end 127 and a second end 128.
- 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 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 interlock and the bag 120 is sealed, and when the slider 132 moves in a deocclusion direction 116, the fastening strips 130, 131 separate and the bag 120 is open.
- the slider engages the fastening strips along one or more ribs that extend laterally along the length of the fastening strips.
- Figs. 2-3 illustrate front and cross sectional views of the container in Fig. 1.
- the first fastening strip 130 includes a a first rib 140 and a second rib 141 that extend outward along the length of the first fastening strip 130.
- the first and second ribs 140, 141 may be disposed perpendicular to the Z axis 106.
- the ribs 140, 141 are separated by a gap 142.
- the slider 132 includes a protrusion 156 that is inserted into the gap 142.
- the first fastening strip 130 may include a third rib 137 that is disposed below the first and second ribs.
- the slider 132 is designed to engage the third rib 137.
- the third rib 137 prevents the slider 132 from being disengaged from the first fastening strip 130 in the direction of the Z axis 106. Additionally the third rib 137 provides a path for the slider 132 to follow to facilitate the occlusion and deocclusion of the fastening strips .
- the second fastening strip 131 includes a first rib 144 and a second rib 146 that extend outward along the length of the second fastening strip 131.
- the first and second ribs 144, 146 may be disposed perpendicular to the Z axis 106.
- the ribs 144, 146 are separated by a gap 148.
- the slider 132 includes a protrusion 157 that is inserted into the gap 148.
- the second fastening strip 131 may include a third rib 139 that is disposed below the first and second ribs.
- the slider 132 is designed to engage the third rib 139.
- the third rib 139 prevents the slider 132 from being disengaged from the fastening strip 131 in the direction of the Z axis
- the slider generally comprises a first and second side portions 150, 151 and a top portion 152.
- the first side portion 150 includes a first shoulder 154.
- the second side portion 151 includes a second shoulder 155 that generally opposes the first shoulder 154.
- the shoulder 154 is designed to engage the fastening strips 130, 131 along the rib 137, providing a path for the slider 132 to follow and preventing the slider from being disengaged from the fastening strip 130.
- the shoulder 155 is designed to engage the rib 139 that is disposed on the fastening strip 131.
- the first side portion 150 may additionally include a first protrusion 156.
- the protrusion 156 engages the ribs 140, 141 disposed on the first fastening strip 130 and may prevent the slider 132 from being disengaged from the fastening strip 130.
- the second side portion 151 includes a second protrusion 157 that is designed to engage the ribs 144, 146 disposed on the second fastening strip 131.
- the protrusion 157 of the second side portion 151 engages the ribs 144, 146 disposed on the second fastening strip 131 and may prevent the slider 132 from being disengaged from the fastening strip 131.
- Fig. 4 illustrates the fastening strips in Fig. 3 and depicts a cross section of the fastening strips taken at a location near one end of the closure device.
- the first fastening strip 130 includes an end stop 128.
- the end stop 128 may be formed by either: (1) altering the ribs 140, 141 to close or to reduce the size of the gap 142; and/or (2) adding material to the gap 142 to close the gap 142 or to reduce the size of the gap 142.
- the end stop 128 prevents the slider 132 from passing beyond the end stop and from being removed from the fastening strips in the X axis 102. Specifically, the protrusion on the slider will be unable to move past the end stop 128.
- the fastening strip 131 may include an end stop 129 which may be formed as noted above for end stop 128 and operates similar to end stop 128.
- Figs. 5-6 depict another embodiment of fastening strips 230, 231 and slider 232.
- the fastening strips 230, 231 include first and second ribs 237, 239.
- the fastening strips 230, 231 include first and second flanges 246, 247. These flanges may protrude downward from the closure elements.
- the first rib 237 and the flange 246 are separated by a gap 248.
- the second rib 239 and the flange 247 are separated by a gap 249.
- the slider 232 includes a first side portion 250, a second side portion 251 and a top portion 252.
- the first and second side portions 250, 251 include first and second shoulders 254, 255, respectively.
- the first shoulder 254 includes a protrusion 258 that is designed to engage the gap 248.
- the second shoulder 255 includes a protrusion 259 that engages the gap 249.
- the protrusions 258, 259 are designed to engage the gaps 248, 249 and prevent the slider from being disengaged from the fastening strips 130, 131 in the Z axis 106.
- the first fastening strip 230 may include an end stop 228.
- the end stop 228 may be formed by either: (1) altering the rib 237 to close the gap 248 or to reduce the size of the gap 248; and/or (2) adding material to the gap 248 to close the gap 248 or to reduce the size of the gap 248.
- the end stop 228 prevents the slider 232 from passing beyond the end stop 228 and from being removed from the fastening strips in the X axis 102. Specifically, the protrusion 258 will be unable to move past the end stop 228.
- the second fastening strip 231 may include an end stop 229 which may be formed as noted above for end stop 228 and operates similar to end stop 228.
- Figs . 7 and 8 depict another embodiment of fastening strips 330, 331 and a slider 332.
- 330 includes a first rib 336 and a second rib 338 that
- the first and second ribs 336, 338 may be disposed perpendicular to the Z axis 106.
- the ribs 336, 338 are separated by a gap 339.
- the slider 332 includes a protrusion 356 that is inserted in the gap 339.
- the second fastening strip 331 may include a first rib 340 and a second rib 341 that extend outward along the length of the fastening strip 331.
- the first and second ribs 340, 341 may be disposed perpendicular to the Z axis 106.
- the ribs 340, 341 are separated by a gap 342.
- the slider 332 includes a protrusion 357 that is inserted in the gap 342.
- the slider 332 includes a first side portion 350, a second side portion 351 and a top portion 352.
- the first and second side portions 350, 351 include first and second protrusions 356, 357 that engage the gaps 339, 342 formed between the ribs 336, 338, 340, 341 and prevent the slider from being disengaged from the fastening strips.
- the first fastening strip 330 includes an end stop 328.
- the end stop 328 may be formed by either: (1) altering the ribs 336, 338 to close the gap 339 or to reduce the size of the gap 339; and/or (2) adding material to the gap 339 to close the gap 339 or to reduce the size of the gap 339.
- the end stop 328 prevents the slider 332 from passing beyond the end stop 328 and from being removed from the fastening strips in the X axis 102. Specifically, the protrusion 356 on the slider will be unable to ' move past the end stop 328.
- the second fastening strip 331 may include an end stop 329 which may be formed as noted for end stop 328 and operates similar to end stop 328.
- interlocking fastening strips may be of different types or forms .
- 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, 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 450, 451 extending from the base portion 448.
- 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 445, 455, which generally serve to guide the hook closure portions 452, 454 for occlusion with the hook closure portions 442, 444 of the second closure element 434.
- 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 interlocking fastening strips may comprise "arrowhead-type” or "rib and groove” fastening strips as shown in Fig. 10 and as described in U.S. Patent 3,806,998.
- 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. (U.S. Patent 3,806,998, Col. 2, lines 16-23).
- the shoulder portions 511 and 512 define reentrant angles therewith providing interlock hooks engageable with interlock hook flanges 515 and 517 respectively of the groove element 507.
- 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 head and groove elements 505 and 507 are adapted to be interlockingly engaged by being pressed together and to be separated when forcably pulled apart, as by means of a generally U-shaped slider 519.
- U.S. Patent 3,806,998, Col. 2, lines 36-41 U.S. Patent 3,806,998, Col. 2, lines 36-41 .
- 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. (U.S. Patent 3,806,998, Col. 2, lines 51-55).
- 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 fastening strips in FIG. 10 may include one of the end stop embodiments noted above.
- interlocking fastening strips may comprise "profile" fastening strips, as shown in Fig. 11 and described in U.S. Patent 5,664,299. As shown in FIG. 11, the first profile 616 has at least an uppermost closure element 616a and a bottommost closure element 616b.
- 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. (U.S. Patent 5,664,299, Col. 4, lines 26-30).
- the fastening assembly includes ridges 625 on the outer surfaces of the fastening strips 614 and 615, and shoulders 621b and 622b on the side walls of the slider.
- the shoulders act as means for maintaining the slider in straddling relation with the fastening strips by grasping the lower surfaces of the ridges 625.
- the fastening strips in FIG. 11 may include one of the end stop embodiments noted above .
- the interlocking fastening strips may be "rolling action" fastening strips as shown in Fig. 12 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 rib 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 closed position toward the top thereof. (U.S. Patent 5,007,143, Col. 4, line 62 to Col. 5, line 1).
- the rib element 716 is hook shaped and projects from the inner face of strip 714. (U.S. Patent 5,007,143, Col. 5, lines 1-3).
- the groove element 717 includes a lower hook-shaped projection 717a and a relatively straight projection 717b 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.
- 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 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) .
- the fastening strips in FIG. 12 may include one of the end stop embodiments noted above .
- the interlocking fastening strips may be manufactured by extrusion through a die .
- the interlocking fastening strips may be formed from any suitable thermoplastic material including, for example, polyethylene, polypropylene, nylon, or the like, or from a combination thereof.
- resins or mixtures of resins such as high density polyethylene, medium density polyethylene, and low density polyethylene may be employed to prepare the interlocking fastening strips.
- the fastening strips may be made from low density polyethylene.
- the fastening strips and the films that form the body of the bag may be conveniently manufactured from heat sealable material. In this way, the bag may be economically formed by using an aforementioned thermoplastic material and by heat sealing the fastening strips to the bag.
- the bag may be made from a mixture of high pressure, low density polyethylene and linear, low density polyethylene.
- the fastening strips may be manufactured by extrusion or other known methods.
- the closure device may be manufactured as individual fastening strips for later attachment to the bag or may be manufactured integrally with the bag.
- the fastening strips may be manufactured with or without flange portions on one or both of the fastening strips depending upon the intended use of the fastening strips or expected additional manufacturing operations .
- the end stops may be created through heat sealing, ultrasonic sealing, or similar known methods that may melt the ribs. Additionally, the ribs may be flattened using cold forming .
- the fastening strips can be manufactured in a variety of forms to suit the intended use .
- the fastening strips may be integrally formed on the opposing sidewalls of the container or bag, or connected to the container by the use of any of many known methods.
- a 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.
- 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 bonding 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 may 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 injecton molded or made by any other method.
- the slider may be molded from any suitable plastic material, such as, nylon, polypropylene, 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)
- Slide Fasteners (AREA)
- Bag Frames (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2000264961A AU2000264961A1 (en) | 2000-07-27 | 2000-07-27 | Closure device |
PCT/US2000/020422 WO2002009549A1 (fr) | 2000-07-27 | 2000-07-27 | Dispositif de fermeture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2000/020422 WO2002009549A1 (fr) | 2000-07-27 | 2000-07-27 | Dispositif de fermeture |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002009549A1 true WO2002009549A1 (fr) | 2002-02-07 |
Family
ID=21741622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/020422 WO2002009549A1 (fr) | 2000-07-27 | 2000-07-27 | Dispositif de fermeture |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2000264961A1 (fr) |
WO (1) | WO2002009549A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1369352A2 (fr) * | 2002-06-07 | 2003-12-10 | Illinois Tool Works, Inc. | Fermeture à glissière |
GB2415307B (en) * | 2004-06-14 | 2008-02-27 | Agilent Technologies Inc | Acoustic resonator |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3806998A (en) * | 1971-02-22 | 1974-04-30 | Minigrip Inc | Elastically flexible fastener |
US4829641A (en) * | 1987-06-22 | 1989-05-16 | First Brands Corporation | Enhanced color change interlocking closure strip |
US5007143A (en) * | 1990-03-07 | 1991-04-16 | Mobil Oil Corp. | Rolling action zipper profile and slipper therefor |
WO1992020252A1 (fr) * | 1991-05-13 | 1992-11-26 | Mobil Oil Corporation | Fermeture a glissiere hermetique, pourvue d'un curseur |
US5189764A (en) * | 1991-03-22 | 1993-03-02 | Mobil Oil Corporation | Plastic reclosable fastener with structure for retaining slider in closed position |
US5489252A (en) * | 1994-04-11 | 1996-02-06 | Reynolds Consumer Products Inc. | Closure arrangement having a peelable seal |
US5636415A (en) * | 1995-09-01 | 1997-06-10 | Illinois Tool Works Inc. | Zipper with anti-derailing ribs |
US5664299A (en) * | 1996-09-10 | 1997-09-09 | Dowbrands L.P. | Reclosable fastener assembly |
US5924173A (en) * | 1996-08-16 | 1999-07-20 | Tenneco Packaging | End posts for plastic zipper |
-
2000
- 2000-07-27 WO PCT/US2000/020422 patent/WO2002009549A1/fr active Application Filing
- 2000-07-27 AU AU2000264961A patent/AU2000264961A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3806998A (en) * | 1971-02-22 | 1974-04-30 | Minigrip Inc | Elastically flexible fastener |
US4829641A (en) * | 1987-06-22 | 1989-05-16 | First Brands Corporation | Enhanced color change interlocking closure strip |
US5007143A (en) * | 1990-03-07 | 1991-04-16 | Mobil Oil Corp. | Rolling action zipper profile and slipper therefor |
US5189764A (en) * | 1991-03-22 | 1993-03-02 | Mobil Oil Corporation | Plastic reclosable fastener with structure for retaining slider in closed position |
WO1992020252A1 (fr) * | 1991-05-13 | 1992-11-26 | Mobil Oil Corporation | Fermeture a glissiere hermetique, pourvue d'un curseur |
US5489252A (en) * | 1994-04-11 | 1996-02-06 | Reynolds Consumer Products Inc. | Closure arrangement having a peelable seal |
US5636415A (en) * | 1995-09-01 | 1997-06-10 | Illinois Tool Works Inc. | Zipper with anti-derailing ribs |
US5924173A (en) * | 1996-08-16 | 1999-07-20 | Tenneco Packaging | End posts for plastic zipper |
US5664299A (en) * | 1996-09-10 | 1997-09-09 | Dowbrands L.P. | Reclosable fastener assembly |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1369352A2 (fr) * | 2002-06-07 | 2003-12-10 | Illinois Tool Works, Inc. | Fermeture à glissière |
JP2004008802A (ja) * | 2002-06-07 | 2004-01-15 | Illinois Tool Works Inc <Itw> | スライダ−ジッパ組立体および該組立体を備えた包装材料並びにそれらの製造方法 |
EP1369352A3 (fr) * | 2002-06-07 | 2004-06-16 | Illinois Tool Works, Inc. | Fermeture à glissière |
US6896409B2 (en) | 2002-06-07 | 2005-05-24 | Illinois Tool Works Inc. | Zipper having longitudinal channel that limits range of slider travel |
GB2415307B (en) * | 2004-06-14 | 2008-02-27 | Agilent Technologies Inc | Acoustic resonator |
Also Published As
Publication number | Publication date |
---|---|
AU2000264961A1 (en) | 2002-02-13 |
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