EP0635433A1 - Sac à fermeture à glissière - Google Patents

Sac à fermeture à glissière Download PDF

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Publication number
EP0635433A1
EP0635433A1 EP94110204A EP94110204A EP0635433A1 EP 0635433 A1 EP0635433 A1 EP 0635433A1 EP 94110204 A EP94110204 A EP 94110204A EP 94110204 A EP94110204 A EP 94110204A EP 0635433 A1 EP0635433 A1 EP 0635433A1
Authority
EP
European Patent Office
Prior art keywords
hook
bag
closure part
female
web
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.)
Granted
Application number
EP94110204A
Other languages
German (de)
English (en)
Other versions
EP0635433B1 (fr
Inventor
Karl-Heinz Dr. Siegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ASF Verwaltungs GmbH
Original Assignee
ASF Verwaltungs GmbH
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
Priority claimed from DE9312370U external-priority patent/DE9312370U1/de
Application filed by ASF Verwaltungs GmbH filed Critical ASF Verwaltungs GmbH
Publication of EP0635433A1 publication Critical patent/EP0635433A1/fr
Application granted granted Critical
Publication of EP0635433B1 publication Critical patent/EP0635433B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a bag, in particular made of plastic, with a slide closure, which consists of a female closure part and a male closure part, the back of which are connected, preferably welded, to opposite walls of the bag.
  • the slide fastener tapes for the above-mentioned bags have mostly been made from the plastic polyethylene, which is relatively soft and flexible. Attempts have been made to use a harder plastic such as polypropylene for the slide fastener tapes instead of polyethylene. This would be desirable in itself, since larger forces (with the same dimensions of the slide closure) could also be absorbed by a harder plastic.
  • a relatively hard plastic such as polypropylene. Closure tapes made of a hard plastic such as polypropylene are very difficult to open and close, so that their practical use is very tedious and difficult and is not accepted by customers.
  • the object of the invention is to provide a bag, preferably made of plastic, with a slide closure of the type mentioned at the outset, which can be opened and closed easily and which nevertheless offers great resistance to an opening force exerted by pressure of the filling material in the bag.
  • connection between the back of the female closure member and the bag wall begins at a location outside the center of the female closure member. It extends from there to the bag opening.
  • the point at which the connection or welding begins is on the side of the center of the female closure part facing the bag opening, ie on the side of this center of the female closure part facing away from the inside of the bag.
  • the configuration on which the invention is based makes it possible for the fastener tape to be proportionate hard plastic such as polypropylene. It is also possible to make the gaps between the hook elements relatively large, so that the closure can be opened and closed easily, and at the same time to ensure sufficient resistance against unwanted opening of the bag by pressure from the inside.
  • the invention provides a slide fastener tape which is made of a relatively hard plastic (i.e. a plastic which is harder than polyethylene, for example made of polypropylene), which can be easily opened and closed and which nevertheless has a very long shelf life from the inside that there is great resistance to the pressure of the filling material from the inside without opening.
  • the slide fastener tape can be made very small and narrow.
  • connection between the back of the female closure part and the bag wall in the area of outer hook or web of the female closure part begins.
  • This connection preferably begins on the side of the web of this hook facing the interior of the female closure part, that is to say the hook of the female profile, which lies on the side facing the bag opening or on the side facing away from the inside of the bag.
  • connection between the back of the male closure part and the bag wall begins at a point in the area of the web of the hook of the male closure part, preferably in the middle of this web, and extends from there to the bag opening.
  • the hook of the male closure part can also be referred to as a single hook. It has a web, at the end of which a hook tip is provided. Due to the described arrangement of the connection or welding between the back of the male closure part and the bag wall, in particular in cooperation with the previously described possibilities of connection or welding between the back of the female closure part and the bag wall, an offset or eccentric arrangement of the Attachment points of the bag walls reached on the fastener tape, which leads to the advantages mentioned.
  • the bag wall preferably projects beyond the back of the female and / or male closure part.
  • the bag wall is accordingly longer in the direction toward the outside, that is to say on the side of the closure facing away from the inside of the bag, than the back or the back of the closure part or parts. In this way, those parts of the bag wall which protrude beyond the closure parts can be gripped. If you then pull apart the seized bag walls, the closure is opened.
  • connection or welding between the back of the female and / or male closure part in front of (within) the outer end of the respective Back ends is particularly advantageous.
  • the hook (single hook) of the male closure part has a bulge on the side facing away from the tip of its hook.
  • This bulge can have the shape of a back of the head. Its purpose is to support the opposite hook tip.
  • the transition point between the bulge or the back of the head and the adjoining web of the single hook forms an abutment for the hook tip of the opposite hook of the female closure part.
  • This hook tip is practically supported as an abutment against the aforementioned transition point and remains attached to the indentation it forms. This reliably prevents the closure from opening unintentionally when the pressure inside the bag is directed outwards. If the closure is to be opened at will, the tip of the hook easily comes off the indentation.
  • the hook backs have lugs, preferably short lugs, on their inner sides and / or outer sides. These approaches are applied in the interest of good handling of the closure. They can be relatively short.
  • the height of the hooks is preferably two to three times the thickness of the webs of the hooks.
  • the webs are therefore made relatively thin.
  • the ratio of the length of the Hook tips to the thickness of the webs is 0.4 to 1.
  • the hook tips are therefore preferably made relatively long.
  • the spaces between the hooks and webs are approximately half the thickness of the webs. So there are preferably relatively large spaces between the hooks and webs.
  • the invention further relates to a slide fastener, consisting of a female fastener with a hook back and two hooks, each having a web and a hook tip, the hook tips facing each other, and a male fastener with a hook back and a hook, the web and has a hook tip.
  • this slide closure is characterized in that the hook of the male closure part has a bulge on the side facing away from its hook tip. The advantages of this bulge have already been described.
  • the slide closure according to the invention is preferably characterized by further features of the bag according to the invention which have already been described.
  • a slide fastener tape is attached, which consists of a male fastener 1 and a female fastener 2.
  • Each closure member has a back 3, 4, which is connected to the wall 19 of the bag, namely welded. It is understood that the closure parts can also be attached to the bag wall by gluing or another suitable type of attachment or connection.
  • the backs 3, 4 of the closure parts 1, 2 are connected to opposite walls 16, 19 and 15 of the bag, respectively, by welding seams 17, 18.
  • the male closure part 1 has a hook (single hook) 6, which is perpendicular to the back 3 protrudes.
  • the single hook 6 in turn consists of a web and a hook tip 7. The web represents the connection from the hook back 3 to the hook tip 7.
  • the female closure part 2 consists of a hook back 4 and two hooks 9, 10, which in turn consist of a web and a hook tip 11, 12 each.
  • the hook tips are facing each other. They delimit an interior space between them in which the single hook 6 can be hooked.
  • connection or welding 18 between the back 4 of the female closure part 2 and the bag wall 16, 19 begins at a point outside the center of the female closure part 2. It extends from there to the bag opening, that is to say in FIGS. 3 and 4 above.
  • the lower end of the weld seam 18 lies above the center of the female closure part 2. This center of the female closure part 2 is located halfway between the webs of the hooks 9, 10.
  • the lower end of the weld seam 18, that is to say the point at which this weld seam 18 begins, is in the region of the outer hook 9 of the female closure part 2, specifically at the interior of the female closure part 2 facing side of the web of this hook 9.
  • the weld seam 17 between the back 3 of the male closure part 1 and the bag wall 15 begins at a point in the area of the web of the single hook 6, namely in the middle of this web.
  • the weld seam 17 extends from there to the bag opening towards the outside.
  • the bag walls 16, 15 project beyond the backs 4, 3 of the female closure part 2 and of the male closure part 1.
  • the bag walls 16, 15 are therefore longer than the hook backs 4, 3
  • the weld seam 18 ends before the outer end of the back 4 of the female closure part 2.
  • the weld seam 17 ends before the outer end of the back 3 of the male closure part 1. This allows the outer ends of the bag walls 16, 17 to be opposite the outside lying ends of the backs 4, 3 are bent in the manner shown in FIG. 4.
  • the outer ends of the bag walls 16, 15 can be gripped by hand and pulled apart.
  • the single hook 6 of the male closure part 1 has a bulge 8 on the side facing away from its hook tip 7.
  • the bulge has the appearance of a rounded back of the head.
  • an indentation is formed in which the hook tip 11 of the opposite hook 9 of the female closure part 2 can get caught (see in particular FIG. 3).
  • the hook backs 4, 3 each have lugs 13, 14 and 2, 1 on their inner and outer sides. These are preferably approaches relatively short. It improves the handling of the closure. The approaches can also be longer, as shown in Fig. 1 by the approaches 1 and 2. In the embodiment of FIG. 2, the approaches 1, 2 are shortened.
  • the handling of the plastic bag and the associated fastener tape is as follows: If the fastener tape is hooked, the hook tip 11 of the hook 9, i.e. the outer hook of the female profile part 2, is supported in the manner of an abutment against the rounded back of the single hook 6. Die The hook tip 11 sticks to the indentation of the hook 9, which is formed at the transition point from the web of the hook 9 to the bulge 8. This also ensures reliable hooking in the manner shown in FIG. 3 if the filling material generates an outward pull or pressure in the interior of the bag, which is represented by the arrows 20, 21, 22, 23. Outward pressure forces inside the bag generate the outward forces 22, 23, which in turn cause tensile forces 20, 21 to arise in the bag walls.
  • the slide fastener can be opened easily and reliably if this is desired.
  • the ends 15, 16 of the bag wall projecting beyond the hook backs 3, 4 become gripped and pulled apart in the direction of the opposite arrows 24, 25.
  • the hook tip 11 easily detaches from the indentation between the bulge 8 and the web of the single hook 6, while the single hook 6 rotates further and completely uncouples from the hook 10, that is to say from the lower (inner) hook of the female closure part 2 (see Fig. 4).
  • the easy closing of the closure causes the relatively spacious, formed by the hooks 9 and 10, grooved groove of the female closure part 2, through which the single hook 6 can be snapped in easily but clearly audibly and tangibly.
  • the weld seam 17 below the individual hook 6 starts approximately in the middle of the web of this hook 6 and extends approximately 1 to 2 mm in the upward or outward direction, that is to say in the direction which is remote from the hook tip 7.
  • the hook tip 7 of the single hook 6 is directed towards the interior of the container.
  • the weld seam 18 begins approximately below the inside of the web of the upper (outer) hook 9 and also extends approximately 1 to 2 mm in the direction of the bag opening. This offset of the fastening seams 17, 18 creates the torque that can be seen in FIG. 3.
  • the fastener tape consisting of two fastener parts (tape halves) 1, 2 can also have shorter approaches 1, 2, as shown in FIG. 2, since the weld seams 17, 18 only cover part of these approaches. In the interest of better handling of the closure, however, the approaches must be in place. The approaches 13, 14 must also be present; they are significantly shorter than approaches 1, 2.
  • closure parts 1, 2 and their hook backs 3, 4 and their hooks 6, 9, 10 are shown disproportionately large.
  • the following dimensions can be provided:
  • the hooks 6, 9, 10 are about 0.9 to 1.0 mm high.
  • the hook backs (bases) 3, 4 are about 0.3 to 0.4 mm thick.
  • the webs of the hooks 9, 10 are about 0.3 to 0.4 mm thick.
  • the web of the single hook 6 can be somewhat thicker, that is 0.4 to 0.5 mm.
  • the interior of the female closure part, which is formed by the hooks 9, 10, should be about 1.1 to 1.3 mm wide with these proportions, the hook tips 11, 12 being about 0.2 to 0.3 mm in length have, so that then the distance between the hook tips 11, 12 of the female profile part is about 0.6 to 0.7 mm. In this case the hook tip of the male profile part 6 protrudes about 0.3 mm beyond the web 6.
  • the height of the hooks is preferably two to three times the thickness of their webs, that the ratio of the length of the hook tips to the thickness of the webs is preferably 0.4 to 1 and that the spaces between the hooks 9, 10; 6 and webs are preferably about half the thickness of the webs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Slide Fasteners (AREA)
EP94110204A 1993-07-21 1994-06-30 Sac à fermeture à glissière Expired - Lifetime EP0635433B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9310936U 1993-07-21
DE9310936 1993-07-21
DE9312370U DE9312370U1 (de) 1993-07-21 1993-08-18 Beutel, insbesondere aus Kunststoff
DE9312370U 1993-08-18

Publications (2)

Publication Number Publication Date
EP0635433A1 true EP0635433A1 (fr) 1995-01-25
EP0635433B1 EP0635433B1 (fr) 1998-09-23

Family

ID=25961042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94110204A Expired - Lifetime EP0635433B1 (fr) 1993-07-21 1994-06-30 Sac à fermeture à glissière

Country Status (2)

Country Link
EP (1) EP0635433B1 (fr)
AT (1) ATE171436T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0906866A1 (fr) 1997-10-03 1999-04-07 Flexico-France Procédé et machine de fabrication automatique de sachets, ainsi que les sachets obtenus
US11572219B2 (en) 2019-02-08 2023-02-07 Elplast Europe Sp. Z O.O. Zipper closure and package using the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416585A (en) * 1965-10-24 1968-12-17 Minigrip Inc Flexible container having interlocking rib and groover closure elements
USRE28969E (en) * 1961-11-27 1976-09-21 Kabushiki Kaisha Seisan Nihon Sha Ltd. Integral reclosable bag
US4817188A (en) * 1988-03-07 1989-03-28 Minigrip, Inc. Bag with separate attached zipper and method of making
EP0398732A2 (fr) * 1989-05-19 1990-11-22 Reynolds Consumer Products, Inc. Bande de fermeture à éléments d'accouplement profilés

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28969E (en) * 1961-11-27 1976-09-21 Kabushiki Kaisha Seisan Nihon Sha Ltd. Integral reclosable bag
US3416585A (en) * 1965-10-24 1968-12-17 Minigrip Inc Flexible container having interlocking rib and groover closure elements
US4817188A (en) * 1988-03-07 1989-03-28 Minigrip, Inc. Bag with separate attached zipper and method of making
EP0398732A2 (fr) * 1989-05-19 1990-11-22 Reynolds Consumer Products, Inc. Bande de fermeture à éléments d'accouplement profilés

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0906866A1 (fr) 1997-10-03 1999-04-07 Flexico-France Procédé et machine de fabrication automatique de sachets, ainsi que les sachets obtenus
FR2769288A1 (fr) 1997-10-03 1999-04-09 Flexico France Sarl Procede de fabrication automatique de sachets, machine a cet effet et sachets obtenus
US11572219B2 (en) 2019-02-08 2023-02-07 Elplast Europe Sp. Z O.O. Zipper closure and package using the same

Also Published As

Publication number Publication date
EP0635433B1 (fr) 1998-09-23
ATE171436T1 (de) 1998-10-15

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