EP0388364A1 - Procédé pour la fermeture d'un sac - Google Patents

Procédé pour la fermeture d'un sac Download PDF

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Publication number
EP0388364A1
EP0388364A1 EP90810209A EP90810209A EP0388364A1 EP 0388364 A1 EP0388364 A1 EP 0388364A1 EP 90810209 A EP90810209 A EP 90810209A EP 90810209 A EP90810209 A EP 90810209A EP 0388364 A1 EP0388364 A1 EP 0388364A1
Authority
EP
European Patent Office
Prior art keywords
sack
reclosable
closure
profile elements
opening
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
EP90810209A
Other languages
German (de)
English (en)
Other versions
EP0388364B1 (fr
Inventor
Paul F. Edelman
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.)
Hr Rueegg AG
Original Assignee
Hr Rueegg AG
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 Hr Rueegg AG filed Critical Hr Rueegg AG
Publication of EP0388364A1 publication Critical patent/EP0388364A1/fr
Application granted granted Critical
Publication of EP0388364B1 publication Critical patent/EP0388364B1/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
    • 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
    • B65D33/26—End- or aperture-closing arrangements or devices using staples or stitches

Definitions

  • the invention is arranged in the area of re-closable bags or sacks which are secured against access and in particular has to do with reclosable sacks which have a first non-reclosable closure and a second reclosable closure.
  • closures protected against access are unfavorable for heavy, bulky goods such as dog food, charcoal, cat litter and the like, which usually require a packaging that can withstand more than 7 kg net weight.
  • the bags typically only had a first non-resealable closure of any kind.
  • a disadvantage of this type of closure on bags with bulky goods is that the bags are not resealable, so that the goods can be spilled through the open packaging when tipped over.
  • the contents can often easily be attacked by bugs or dry out. It is desirable that functional and inexpensive reclosable means for such sacks for bulky goods are produced, because the contents may have to be emptied out of the sacks to an increased extent, given the often large distances between two deliveries.
  • the device of the Ferrell patent U.S. Patent No. 4,241,865 is an attempt to overcome many of the disadvantages of these prior inventions of non-resealable packages or sacks.
  • This patent describes a reclosable sack with a first non-reclosable, sewn closure and a second reclosable zipper-like closure that sits outside the first closure.
  • the invention of the Ferrell patent offers a reclosable sack that is secured against access for the transport of heavy, bulky goods, it also has a disadvantage: it is generally complicated to create.
  • the production of sacks with a first non-reclosable closure and a zipper requires several spools of material that are stitched together in an uninterrupted process.
  • the zipper needs stoppers at the ends.
  • the stoppers must be correctly aligned with the bag for the zipper. In other words, the zipper must fit the bag properly.
  • the invention provides a reclosable sack with a pouring opening from which small pourable quantities can be let out.
  • the reclosable sack consists of a first non-reclosable sewn, separable closure over the opening of the sack and closes it.
  • a second reclosable fastener is located along the opening outside the first fastener.
  • the second reclosable fastener includes a pair of opposing profile elements, which can optionally be joined and blocked by pressing the profiles together by hand and separated again by pulling apart the protruding edges of the elements.
  • An object of this invention is to overcome the drawbacks and shortcomings of the previous inventions for packaging bulky and heavy material in reclosable, tamper evident bags.
  • An important goal is to offer an improved resealable sack that is easier and more efficient to produce.
  • Another object of this invention is to provide an improved reclosable sack that does not require separate closure parts, such as zipper sliders or stoppers.
  • the opposing profile elements are formed separately, hooked together and wound on a spool.
  • the second closure is released from the spool and the lower assembly points of the profile elements are attached to the walls of a row of sacks.
  • the ends of the profile elements are heated between adjacent sacks thread or thread is wound on a separate bobbin. With the thread, the sack opening is sewn along chain stitch and thus the sack opening is closed. The stitches are sewn so that they can be separated manually.
  • the sealed bags are separated by cutting the second seal on the heat-sealed part.
  • a reclosable sack (10) consists of a lower part, which can be made of any suitable material and can have one or more layers, depending on the material and jacket content.
  • the sack (10) is shown with front and rear walls (11) and opposite side walls (12), all of which are made from two-ply strong paper.
  • the sack walls (11) and (12) can also consist of plastic material such as polyethylene or polyvinyl chloride.
  • the sack (10) also comprises a firm bottom closure (13) made of a permanent chain stitch or, in the case of plastic material, a heat-sealed or adhesive seam.
  • the reclosable sack includes an upper closure (14) which is shown in more detail in the cross-sectional view of Fig. 2.
  • the upper closure (14) comprises a non-reclosable sewn closure (15) and a second reclosable closure (20) so that the bag is a tamper-evident container after the initial filling and sealing, but after opening through the consumer can be closed again. If access to the contents of the sack is desired, the first non-reclosable sewn closure is opened and thus offers access to the sack opening, while the second reseals closable closure over the bag opening can be closed again after the first closure has been removed.
  • the first non-reclosable closure (15) comprises a line of chain stitches made of thread, cord or thread (16), which close together the sack walls (11).
  • the chain stitches made of thread are applied so that the thread ends (16A) are loose.
  • the chain stitches can be torn apart or released by pulling the loose thread ends (16A) by hand.
  • a tear strip or tear tape (17) is attached, see dashed lines in Fig. 2.
  • the tear tape (17) is sewn onto the sack walls (11) if the first one is not - reclosable closure is created.
  • the second reclosable fastener comprises a pair of opposing profile elements or strips (22) and (25).
  • the first profile strip (22) comprises a number of ribs (23) protruding from the inner surface.
  • Profile strip (25) comprises a number of ribs (26) protruding from the inner surface, which are aligned with the ribs (23) of the opposite profile strip (22) for an interlocking toothing.
  • the interlocking rib profiles (23) and (26) reach high enough to the upper end or the opening of the sack, so that the ribs (23) and (26) can interlock as in Fig. 7.
  • the profile strips (22) and (25) can interlock to close the upper part of the bag when pressure is applied along the outer surfaces of the profile strips so that the ribs interlock.
  • the interlocking ribs (23) and (26) can come loose if the edges (24) and (27) are gripped which protrude beyond the interlocking ribs. If the edges (24) and (27) are separated or pulled apart, the interlocking ribs (23) and (26).
  • the profile strips (22) and (25) are attached at the assembly points (30) and (31) of the strips (22) and (25) to the upper end of the sack walls (11).
  • the chain stitch thread (16) of the first non-reclosable fastener (15) is sewn through the assembly points (30) and (31) of the profile strip.
  • the profile strips (22) and (25) are sealed together at the ends (33), as shown in Fig. 4.
  • the strips are preferably heat-sealed at the ends, but sonic welding, adhesive or similar sealing processes can also be used.
  • the purpose of the seal is to close the ends of the profile strips in order to guarantee an airtight seal when the bag is reclosed and to keep the interlocking ribs in the correct position.
  • Heat sealed profile strip ends (33) of the reclosable sack of this invention overcome a disadvantage of the prior zipper invention in which the zipper cannot fully close the sack opening.
  • the prior zipper invention is susceptible to inadvertent opening, while the profile strips (22) and (25) of this invention guarantee an absolute closure that is very resistant to accidental opening.
  • Figures 3 and 4 show the resealable sack of this invention with the first, non-resealable closure (15) removed. Once the chain stitch thread has been torn loose to release the chain stitches, a number of small holes (18) along the side walls (11) and through the profile strips (22) and (25) are visible, where the stitches were previously. If the non-reclosable closure (15) is removed, the upper end of the sack is open and allows access to its contents. The upper end of the sack can be closed again by the two profile strips (22) and (25) and their corresponding interlocking ribs (23) and (26).
  • the process for making the reclosable jacket of this invention is shown in Figures 5-7.
  • the resealable sack can be in one continuous Process are produced in which a number of such bags are equipped with the upper closure (i4).
  • the row of sacks (10) are filled in an earlier step and the sack openings are left open.
  • the second reclosable closure (20) with the profile strips (22) and (25) is formed in a conventional extrusion process.
  • the profile strips are toothed and wound onto a delivery spool (35).
  • the toothed closure (20) is dispensed from the spool and arranged over the openings of the bags (10) as shown in Figs. 6 and 7.
  • the lower assembly points (30) and (31) of the interlocking profile strips (22) and 25) are attached to the sack walls (11) by an adhesive attached to the inner surfaces of the strips.
  • the adhesive can also be applied directly to the sack walls (11) instead of on the inner surfaces of the profile strips.
  • the adhesive applied at the assembly points (30) and (31) must bond the plastic and the bag material sufficiently whether the bag is made of plastic material or paper.
  • the lower ends of the plastic profile strips (22) and (25) can be pressed against the sack walls with a pair of rollers (37) on both sides.
  • Other suitable means for guaranteeing strong adhesion between the bag walls (11) and the reclosable toothed closure (20) can be determined.
  • the reclosable closure (i4) When the reclosable closure (i4) is glued to the walls (11) of the sack (10), the ends of the reclosable profiles are heat sealed at the points (33). In the continuous sack making of this invention, the heat sealing step occurs between adjacent sacks (10).
  • the first non-reclosable closure (15) can be attached before or after the heat sealing.
  • the first closure is placed before the heat sealing because the thread (16) and the tear strip (17) are not made of plastic material and are therefore not sensitive to them Are heat seals. If the tear-off strip (17) consists of plastic material, it must be attached after the heat sealing so that it can be removed again.
  • twine or cord (41) When attaching the first sewn fastener (15), twine or cord (41) is released from a roll or spool (not shown) and sewn in a conventional manner to form a chain stitch that is tight enough to close the sack, but loose enough to be solved again.
  • a tear strip is attached, it is emitted by a spool (42) before the chain stitch is sewn.
  • the individual bags (10) are cut apart, namely between the bags, along a cutting line (36) which leads through the center of the heat-sealed point (33) of the reclosable profile closure (14).
  • FIG 8 shows a second implementation of the reclosable sack of this invention.
  • a reclosable sack (10) comprises outer walls (11) and (12) and a first non-reclosable closure (50) with a chain stitch thread or thread (51) with pulling or tear strips (52).
  • the second reclosable fastener (60) comprises a pair of profile strips (61) and (62) which are glued to a second pair of strips.
  • the strips (63) in this embodiment are made of the same material as the tear-off strip, such as crepe paper.
  • the profile strips (61) and (62), which are made of plastic, are attached on their outer surfaces to the inner surfaces of the strips (63) at the point (64).
  • the second pair of strips (63) is attached to the sack walls (11) on the inner surfaces thereof at point 65.
  • An advantage of this design is that the similar materials of the sack walls (11) and the strips (63) can be easily and quickly produced in an uninterrupted manner Bags can be joined together, in contrast to the dissimilar materials that come together in the design of Fig. 7.
  • the profile strips (61) and (62) can be attached to the strip (63) before the sack production and wound onto a supply roll, as shown with roll (35) in Fig. 6.
  • Figures 9 and 10 show another embodiment of the method and bag of this invention.
  • the embodiment shown in Figs. 9 and 10 is identical to that of Fig. 2, except that the stitches are carried out on the sack before the resealable plastic fastener is attached to the sack. Therefore, Fig. 9 shows the sewn closure (15 ⁇ ), which is fastened by the sack walls (11 ⁇ ), without the profile strips (22 ⁇ ) and (25 ⁇ ). In a later step, see Fig. 10, the plastic profile strips (22 ⁇ ) and (25 ⁇ ) are attached to the bag outer wall of the sewn closure (15 ⁇ ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Packages (AREA)
  • Paper (AREA)
  • Slide Fasteners (AREA)
EP90810209A 1989-03-17 1990-03-15 Procédé pour la fermeture d'un sac Expired - Lifetime EP0388364B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32524789A 1989-03-17 1989-03-17
US325247 1989-03-17

Publications (2)

Publication Number Publication Date
EP0388364A1 true EP0388364A1 (fr) 1990-09-19
EP0388364B1 EP0388364B1 (fr) 1992-10-14

Family

ID=23267063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810209A Expired - Lifetime EP0388364B1 (fr) 1989-03-17 1990-03-15 Procédé pour la fermeture d'un sac

Country Status (7)

Country Link
US (1) US5035517A (fr)
EP (1) EP0388364B1 (fr)
AT (1) ATE81484T1 (fr)
CA (1) CA2012111C (fr)
DE (1) DE59000352D1 (fr)
DK (1) DK0388364T3 (fr)
ES (1) ES2035739T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0558453A1 (fr) * 1992-02-21 1993-09-01 Hr Rüegg Ag Procédé pour attacher à un emballage une bande de fermeture refermable et dispositif d'application pour la mise en oeuvre du procédé
FR2707259A1 (fr) * 1993-07-09 1995-01-13 Hosokawa Yoko Kk Poche à fermeture à glissière et procédé de fabrication de celle-ci.
US5782562A (en) * 1994-10-11 1998-07-21 Anspacher; Richard B. Handle for resealable container
WO2007027252A1 (fr) * 2005-06-01 2007-03-08 Reynolds Consumer Products, Inc. Fermeture a glissiere refermable avec joints sur des surfaces interieures et exterieures d'elements de fermeture

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275491A (en) * 1992-01-10 1994-01-04 Kabushiki Kaisha Hosokawa Yoko Zippered bags and method of forming the same
US5172980A (en) * 1992-05-19 1992-12-22 Velcro Industries, B.V. Reclosable bag having hook and loop sealing strips
US6049938A (en) * 1993-06-18 2000-04-18 Jimison; James W. Method and apparatus for cleaning and polishing fruits and vegetables
FR2770489B1 (fr) * 1997-11-06 2000-02-04 Flexico France Sarl Procede de fabrication de sacs et de conditionnement
US20110235951A1 (en) * 1998-07-17 2011-09-29 Com-Pac International, Inc. Reclosable bag with tear open feature
US8002467B2 (en) * 1999-10-12 2011-08-23 Com-Pac International, Inc. Reclosable fastener profile seal and method of forming a fastener profile assembly
US6360513B1 (en) 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US6244021B1 (en) * 1999-05-21 2001-06-12 Illinois Tool Works Inc. Method of applying reclosable zipper to package
US6071011A (en) * 1999-08-12 2000-06-06 Tenneco Packaging, Inc. Fill-through-the-top package
US20070086682A1 (en) * 1999-10-12 2007-04-19 Com-Pac International, Inc. Airtight reclosable fastener
US7041249B2 (en) * 1999-10-12 2006-05-09 Com-Pac International Vibratory molding process and product
US7067037B2 (en) * 1999-10-12 2006-06-27 Com-Pac International, Inc Modular reciprocating heat seal jaw assembly
US6562165B1 (en) * 2000-08-15 2003-05-13 S.C. Johnson Home Storage, Inc. Method for laminating closure member to film web
US6390676B1 (en) * 2001-05-15 2002-05-21 Honeywell International Inc. Reclosable package using straight tear film and process for manufacture
US7204641B2 (en) * 2002-09-19 2007-04-17 Illinois Tool Works Inc. Pouch with spout
US20120243805A9 (en) * 2002-09-19 2012-09-27 Stolmeier Robert C Pouch with spout
US6805485B2 (en) * 2002-10-02 2004-10-19 Illinois Tool Works Inc. Gusseted reclosable package with slider-operated zipper
US7870961B2 (en) * 2004-03-08 2011-01-18 Moti Shai Product delivery system for foodstuffs
US7506487B2 (en) * 2005-09-21 2009-03-24 Zip Pack Ip Ag Method for applying a reclosable seal to a container
US20070065051A1 (en) * 2005-09-21 2007-03-22 Eads Claude A Infestation resistant reclosable seal
US20070065048A1 (en) * 2005-09-21 2007-03-22 Eads Claude A Reclosable seal with handle
US7331153B1 (en) 2006-08-31 2008-02-19 Sealed Air Corporation (Us) Apparatus and method for creating easy to open packages
WO2009016644A1 (fr) * 2007-07-30 2009-02-05 Ashok Chaturvedi Sac tissé feuilleté et procédé de fabrication d'un sac tissé feuilleté
US8875356B2 (en) 2011-10-06 2014-11-04 Intercontinental Great Brands Llc Mechanical and adhesive based reclosable fasteners

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Publication number Priority date Publication date Assignee Title
DE1776769U (de) * 1958-08-09 1958-10-30 Erwin Ramisch Verpackungsbeutel aus vorzugsweise schlauchfoermigem folienmaterial.
FR1323348A (fr) * 1962-02-19 1963-04-05 Flexico France Sarl Perfectionnements apportés aux articles, tels que des sacs ou sachets, munis de fermetures souples, et aux éléments, procédés et dispositifs pour la réalisation detels articles
FR1529850A (fr) * 1966-03-04 1968-06-21 Appareil pour la fabrication de sachets en matière plastique
US4241865A (en) * 1979-08-06 1980-12-30 Kcl Corporation Reclosable shipping sack and method
US4620320A (en) * 1984-12-20 1986-10-28 Kcl Corporation Substantially leakproof zipper closure for bags and method

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US2978164A (en) * 1958-05-22 1961-04-04 Bemis Bro Bag Co Bags
US3181583A (en) * 1962-09-24 1965-05-04 Daniel J Lingenfelter Reclosable plastic container
US3228585A (en) * 1964-04-27 1966-01-11 Bemis Bro Bag Co Bag
SE423080B (sv) * 1978-03-14 1982-04-13 Salve Sa Aterforslutbar forpackning for en stapel av vatdukar eller annat fuktigt material
US4337889A (en) * 1980-02-06 1982-07-06 Talon, Inc. Reclosable bag with slide fastener
US4589145A (en) * 1983-10-31 1986-05-13 Signode Corporation Packaging material and package
US4637063A (en) * 1985-03-04 1987-01-13 Kcl Corporation Reclosable bag with sealed laminated liner and method
US4824261A (en) * 1985-10-24 1989-04-25 Velcro Industries B.V. Reclosable bag and hook and loop sealing strips for use therein
US4782951A (en) * 1986-03-20 1988-11-08 Oscar Mayer Foods Corporation Reclosable package and method of making reclosable package
US4691370A (en) * 1986-04-04 1987-09-01 Talon, Inc. Reclosable bulk material bag with slide fastener
US4848928A (en) * 1987-04-27 1989-07-18 Minigrip, Inc. Package with reclosable fin and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1776769U (de) * 1958-08-09 1958-10-30 Erwin Ramisch Verpackungsbeutel aus vorzugsweise schlauchfoermigem folienmaterial.
FR1323348A (fr) * 1962-02-19 1963-04-05 Flexico France Sarl Perfectionnements apportés aux articles, tels que des sacs ou sachets, munis de fermetures souples, et aux éléments, procédés et dispositifs pour la réalisation detels articles
FR1529850A (fr) * 1966-03-04 1968-06-21 Appareil pour la fabrication de sachets en matière plastique
US4241865A (en) * 1979-08-06 1980-12-30 Kcl Corporation Reclosable shipping sack and method
US4620320A (en) * 1984-12-20 1986-10-28 Kcl Corporation Substantially leakproof zipper closure for bags and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0558453A1 (fr) * 1992-02-21 1993-09-01 Hr Rüegg Ag Procédé pour attacher à un emballage une bande de fermeture refermable et dispositif d'application pour la mise en oeuvre du procédé
FR2707259A1 (fr) * 1993-07-09 1995-01-13 Hosokawa Yoko Kk Poche à fermeture à glissière et procédé de fabrication de celle-ci.
US5782562A (en) * 1994-10-11 1998-07-21 Anspacher; Richard B. Handle for resealable container
WO2007027252A1 (fr) * 2005-06-01 2007-03-08 Reynolds Consumer Products, Inc. Fermeture a glissiere refermable avec joints sur des surfaces interieures et exterieures d'elements de fermeture
US7758242B2 (en) 2005-06-01 2010-07-20 Reynolds Consumer Products, Inc. Recloseable zipper with sealant on inner and outer surfaces of closure members

Also Published As

Publication number Publication date
ATE81484T1 (de) 1992-10-15
DE59000352D1 (de) 1992-11-19
ES2035739T3 (es) 1993-04-16
EP0388364B1 (fr) 1992-10-14
US5035517A (en) 1991-07-30
DK0388364T3 (da) 1992-11-30
CA2012111A1 (fr) 1990-09-17
CA2012111C (fr) 2002-01-29

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