WO1995008491A1 - Sac souple a ouverture amelioree pour articles comprimes - Google Patents

Sac souple a ouverture amelioree pour articles comprimes Download PDF

Info

Publication number
WO1995008491A1
WO1995008491A1 PCT/US1994/010541 US9410541W WO9508491A1 WO 1995008491 A1 WO1995008491 A1 WO 1995008491A1 US 9410541 W US9410541 W US 9410541W WO 9508491 A1 WO9508491 A1 WO 9508491A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
weakness
line
articles
improvement
Prior art date
Application number
PCT/US1994/010541
Other languages
English (en)
Inventor
Liberatore Antonio Trombetta
Francis Robert Feaver
Original Assignee
The Procter & Gamble 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 Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to AU77308/94A priority Critical patent/AU7730894A/en
Priority to EP94928157A priority patent/EP0720574B1/fr
Priority to DE69411024T priority patent/DE69411024T2/de
Priority to JP50986095A priority patent/JP3421043B2/ja
Publication of WO1995008491A1 publication Critical patent/WO1995008491A1/fr
Priority to HK98113163A priority patent/HK1012165A1/xx

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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/07—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles

Definitions

  • the present invention relates to an easy open flexible bag for containing a number of compressible articles such as disposable absorbent bandages, baby diapers, sanitary napkins, incontinent briefs and the like.
  • the present invention has even further relation to such bags which have pull tab on a side panel for initiating the opening of the bag.
  • the bag has a continuous line of weakness located at least partially on one of the side panels to define a portion of the side panel which will be partially removed to gain access to the articles.
  • These types of bags typically include a pull tab on the side panel for initiating the opening of the bag. This pull tab usually comprises a cut of a predetermined length, extending through the bag material so that a consumers thumb or finger can be inserted therein for initiating the opening of the bag.
  • a drawback to the above mentioned packages is that the cut which forms the pull tab to initiate opening can at times expose the enclosed articles to an undesirable amount of external contamination to the atmosphere, before opening.
  • External contamination is perceived as being undesirable for sanitary products because they are usually in contact with the body. The contamination is undesirable for both aesthetic and perceived safety reasons. Contamination is perceived by the consumer as being able to introduce bacteria which could be harmful to the user. Moreover, liquid contamination could destroy articles such as absorbent products. Protection of the diapers from external contamination before opening is viewed as an important feature to consumers.
  • an improved side opening top gusset, rectangular flexible bag for containing a stack of compressed flexible articles.
  • the bag has front and back panels, two side panels and top and bottom panels, all of which are connected together to form an internal compartment for containing the stack under compression.
  • the stack is arranged within the bag in such a way that the side panels are under tension.
  • the bag further including two welds one adjacent each juncture between the top and the side panels. Each of the welds joins the top and the side panels together along a continuous line so as to create external pockets on the bag.
  • the external pockets have no access to the internal compartment of the bag.
  • the bag further including a continuous line of weakness located at least partially within one of the side panels.
  • the line of weakness defines a portion of the side panel to be at least partially separated from the remainder of the side panel for gaining access to the articles.
  • the improvement to the bag is that the bag further includes a pull tab, adjacent to the line of weakness.
  • the pull tab comprises a means for initiating tearing along the substantially continuous line of weakness.
  • the pull tab is located on the pocket adjacent the side panel having the line of weakness so as to reduce exposure of the articles to the atmosphere.
  • Figure 1 is a simplified perspective view of flexible bag in accordance with the present invention.
  • Figure 2 is a side view of an unfilled bag in accordance with the present invention.
  • Figure 3 A is a simplified perspective view of a the bag of the present invention showing how a consumer would grab the pull tab to open the bag.
  • Figure 3B is a view similar to that of Figure 3 A but showing the bag after it has been opened.
  • Figure 4 is a view similar to that of Figure 1 showing an alternative embodiment of the present invention.
  • the present invention will be described in the context of providing an easy open flexible bag containing one or more stacks of folded disposable absorbent diapers, the present invention is in no way limited to such application. As pointed out earlier herein, the present invention may be practiced to greatest advantage to provide reduced storage, shipping and handling costs in any situation involving flexible articles which are substantially compressible in at least one of their dimensions, such as their thickness. In addition, the present invention can provide automatically assisted dispensing of discrete flexible articles one at a time due to the action of the compressive forces acting upon the flexible articles during a substantial portion of the bag's usable life.
  • the detailed description contained herein which relates to a particularly preferred easy open flexible bag of compressed disposable diapers, will allow one skilled in the art to readily adapt the invention to other uses.
  • FIG. 1 is a simplified perspective illustration of a particularly preferred embodiment of a side opening top gusset substantially rectangular flexible bag 10 in accordance with the present invention.
  • Bag 10 contains a number of compressed flexible articles 20 arranged in a stack.
  • Bag 10 comprises opposing front and back panels 40 and 41, opposing side panels 30 and 31, and opposing top and bottom panels 50 and 51. All of the aforementioned panels are connected together to form an internal compartment 19 for containing the stack of compressed flexible articles 20 under compression.
  • the stack of compressed articles are placed in bag 10 in such a way that side panels 30 and 31 are under tension.
  • Flexible bag 10 is a top gusset bag formed by folding a web of film, paper, plastic or other suitable material.
  • the general method for forming top gusset flexible bags from a continuous web of material is well known in the art.
  • the general method for constructing and filling top gusset flexible bags similar to those of the present invention is given in the earlier incorporated U.S. patent 5,054,619, SIDE OPENING FLEXIBLE BAG WITH LONGITUDINALLY ORIENTED CARRYING HANDLE SECURED TO SIDE PANELS, issued to Muckenfuhs on October 8, 1991.
  • the improvement in the construction of these bags in accordance with the present invention can best be explained by referring to Figure 1 in conjunction with Figure 2.
  • FIG. 2 a simplified side view of the bag 10 in a folded and flat condition before being filled with articles 20.
  • the bag is folded along its top gusset so that top panel 50 is collapsed and folded inwardly so as to be parallel with side panel 40, and the bag is further folded at about the halfway line of side panels 30 and 31 so they are also parallel to side panel 40.
  • bag 10 includes a substantially continuous line of weakness 5 located at least partially within side panel 30. Line of weakness 5 defines a predetermined portion 25 of side panel 30 which will be partially separated from the remaining portion of the side panel so as to gain access to articles 20.
  • Bag 10 preferably includes a handle 80 for easy carrying.
  • Handle 80 preferably extends longitudinally across the top of the bag between side walls 30 and 31. Handle
  • Handle 80 can be made from the same material as the bag or any other suitable material.
  • bag 10 is provided with reinforcing welds adjacent juncture 53 between the top and side panels.
  • Figure 2 shows the reinforcing weld adjacent side panel 30, however, a similar weld is present in a corresponding location adjacent side panel 31.
  • the reinforcing welds join top panel 50 to side panels 30 and 31 along a substantially continuous line 100 so as to create an external pockets 2 and 3, shown in Figure 1.
  • the welds also join the handle 80 to the bag. Preferably the weld extends from line 100 to the top of the bag.
  • External pockets 2 and 3 are created from the portions of the side walls and the top wall adjacent to juncture 53 which is above and on the reinforcing welds 1.
  • the external pockets have substantially no access to internal compartment 19.
  • the improvement to the flexible bag 10 in accordance with the 1 present invention resides in the placing of pull tab 7, for initiating the opening of the bag.
  • the present invention contemplates placing pull tab 7 on pocket 2. This substantially reduces the exposure of articles 20 to the atmosphere before opening because pocket 2 has substantially no access to internal compartment 19.
  • Pull tab 7 comprises a means for initiating tearing along the substantially continuous line of weakness 5.
  • pull tab 7 is formed by a cut of a predetermined length extending through the pocket.
  • pull tab 7 allows a consumer to easily insert a thumb or finger within the pull tab and initiate tearing along line of weakness 5, thereby partially removing portion 25 so as to expose articles 20 for use. Because the pull tab is located above the reinforcing weld on pocket 2 and not below the weld, exposure of the articles to the atmosphere prior to opening is substantially reduced.
  • handle 80 is secured to the bag along side panels 30 and 31 along or above the reinforcing welds 1 so as to be located on the interior of pockets 2 and 3.
  • the reinforcing welds strengthen the attachment of the handle to the bag so that the handle can easily carry the weight of the bag.
  • the handle 80 is preferably wider than the pull tab 7 and is secured to the side panel 30 in areas out side of the pull tab 7 so that when the bag is opened the handle remains in place and functional.
  • the shape of the pull tab 7 must be such that it is easily gripped so that a user can exert sufficient force to pull the panel open along line of weakness 5. Preferably it is large enough so that most people are able to insert their finger tip therethrough. Portion 25 which is partially removed from the rest of the bag is preferably large enough to permit easy removal of the articles therein. However, it is preferably small enough to prevent the articles from tumbling out of the bag upon opening. As can best be seen from Figures 3 A and 3B, the unrestrained folded edges of the compressed articles 20 begin to project through the aperture spanning the tensioned side panel 30 in a fan-like array when the bag is opened. This is due to a partial release of the compressive forces acting upon the stack of compressed disposable diapers 20 contained within the flexible bag 15. Note, however, that the uppermost end of the material which is partially separated from side wall 30 remains attached to flexible bag 15. Accordingly, the end of carrying handle 80 secured side panel 30 at area 82 remains completely functional if the user desires to carry the bag by its handle after opening.
  • FIG. 4 shows a simplified perspective view of a bag 110 in accordance with the present invention.
  • Bag 110 is similar to bag 10 except for pull tab 107.
  • Pull tab 107 comprises two lines of weakness 171 and 172 which extend up from the beginning of the reinforcing weld to the top edge of the bag. By pulling on pull tab 107, lines of weakness 171 and 172 will tear the bag along those lines and will continue the tear the bag along line of weakness 105, thereby opening the bag.
  • the substantially continuous line of weakness 5 comprises - a substantially continuous perforated line.
  • the line 5 should have different land to perforation ratios along different parts of the line.
  • the land to perforation ratio should be fairly low due to the amount of material that needs to be ruptured. If there is a section above the weld line where the handle is not secured to the top and side panels then the land to perforation ratio can increased. Lastly, for portions below the weld line only the side wall is being ruptured so the land to perforation ratio can be increased even more.
  • preferred material for forming the bag is a polymeric film such as low to medium density polyethylene from about 50 to 75 microns thick with a handle formed from the same material.
  • land to perforation ratios are: 2:3 where three layers of material need to be ruptured; 3:3 where two layers need to be ruptured; and 4:3 where only the side panel needs to ruptured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Abstract

Un sac souple (10) rectangulaire pour une pile d'articles souples comprimés (20) a un pli supérieur amélioré d'ouverture latéral. Le sac est constitué d'un panneau antérieur et d'un panneau postérieur (40, 41), de deux panneaux latéraux (30, 31), d'un panneau supérieur et d'un panneau inférieur (50, 51) reliés les uns aux autres afin de former un compartiment intérieur (19) dans lequel la pile d'articles est contenue sous pression. La pile est placée dans le sac de façon à mettre sous tension les panneaux latéraux. Le sac comprend en outre deux soudures adjacentes aux jonctions entre le panneau supérieur (50) et les panneaux latéraux (30, 31). Les soudures relient le panneau supérieur aux panneaux latéraux le long d'une ligne continue (100), de façon à créer des poches extérieures (2, 3) sur le sac. Les poches extérieures ne permettent pas l'accès au compartiment intérieur du sac. Le sac comprend en outre une ligne continue (5) destinée au déchirement située au moins partiellement dans un des panneaux latéraux. La ligne destinée au déchirement définit une portion (25) du panneau latéral que l'on peut séparer au moins partiellement du reste du panneau latéral afin d'avoir accès aux articles contenus dans le sac. L'amélioration apportée au sac est une languette de traction (7) adjacente à la ligne destinée au déchirement qui permet d'ouvrir le sac le long de la ligne destinée au déchirement. La languette de traction est située sur le panneau latéral pourvu de la ligne (5) destinée au déchirement et sur la poche (2), de façon à réduire l'exposition des articles à l'atmosphère.
PCT/US1994/010541 1993-09-23 1994-09-16 Sac souple a ouverture amelioree pour articles comprimes WO1995008491A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU77308/94A AU7730894A (en) 1993-09-23 1994-09-16 Flexible bag for containing compressed articles having an improved opening feature
EP94928157A EP0720574B1 (fr) 1993-09-23 1994-09-16 Sac souple a ouverture amelioree pour articles comprimes
DE69411024T DE69411024T2 (de) 1993-09-23 1994-09-16 Mit einer öffnungsvorrichtung versehender beutel flexibler beutel zur verpackung von gepressten artikeln
JP50986095A JP3421043B2 (ja) 1993-09-23 1994-09-16 改良された開口部を有する圧縮製品を収容する可撓性バッグ
HK98113163A HK1012165A1 (en) 1993-09-23 1998-12-10 Flexible bag for containing compressed articles having an improved opening feature

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12595793A 1993-09-23 1993-09-23
US08/125,957 1993-09-23

Publications (1)

Publication Number Publication Date
WO1995008491A1 true WO1995008491A1 (fr) 1995-03-30

Family

ID=22422243

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/010541 WO1995008491A1 (fr) 1993-09-23 1994-09-16 Sac souple a ouverture amelioree pour articles comprimes

Country Status (10)

Country Link
EP (1) EP0720574B1 (fr)
JP (1) JP3421043B2 (fr)
KR (1) KR100356760B1 (fr)
AT (1) ATE167148T1 (fr)
AU (1) AU7730894A (fr)
CA (1) CA2170975A1 (fr)
DE (1) DE69411024T2 (fr)
ES (1) ES2117301T3 (fr)
HK (1) HK1012165A1 (fr)
WO (1) WO1995008491A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6698928B2 (en) 2001-12-21 2004-03-02 Kimberly-Clark Worldwide, Inc. Flexible packages having reusable pull-tab openers
US6769565B2 (en) 2000-12-26 2004-08-03 Kimberly-Clark Worldwide, Inc. Dispensing cartridge and system
WO2006022869A1 (fr) * 2004-07-29 2006-03-02 Kimberly-Clark Worldwide, Inc. Emballage souple doté d’un élément d’ouverture facile
EP2110337A1 (fr) * 2008-04-14 2009-10-21 The Procter and Gamble Company Emballage flexible avec systèmes d'ouverture
WO2010062231A1 (fr) * 2008-11-27 2010-06-03 Sca Hygiene Products Ab Sac d'emballage pour articles absorbants
US8490793B2 (en) 2011-06-22 2013-07-23 Kimberly-Clark Worldwide, Inc. Opening feature for packaging having absorbent articles contained therein

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3684215B2 (ja) * 2002-07-09 2005-08-17 大王製紙株式会社 吸収性物品の包装袋
WO2017062561A1 (fr) * 2015-10-06 2017-04-13 The Procter & Gamble Company Sac de boîte souple comprenant un sachet de détergent en dose unitaire soluble

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349050A2 (fr) * 1988-06-28 1990-01-03 The Procter & Gamble Company Sac souple remplis d'articles souples comprimés
EP0406928A1 (fr) * 1989-06-26 1991-01-09 The Procter & Gamble Company Sac flexible facile à ouvrir
WO1991008962A1 (fr) * 1989-12-15 1991-06-27 The Procter & Gamble Company Systeme d'emballage souple a ouverture laterale, possedant une poignee pour le transport orientee longitudinalement et fixee aux cotes lateraux
WO1993016929A1 (fr) * 1992-02-27 1993-09-02 Paramount Packaging Corporation Sac en matiere plastique souple a ouverture facile et son procede de fabrication
EP0585653A1 (fr) * 1992-08-06 1994-03-09 Kimberly-Clark Corporation Ouverture d'un sac d'emballage avec dégagement de la force expansive des produits emballés

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349050A2 (fr) * 1988-06-28 1990-01-03 The Procter & Gamble Company Sac souple remplis d'articles souples comprimés
EP0406928A1 (fr) * 1989-06-26 1991-01-09 The Procter & Gamble Company Sac flexible facile à ouvrir
WO1991008962A1 (fr) * 1989-12-15 1991-06-27 The Procter & Gamble Company Systeme d'emballage souple a ouverture laterale, possedant une poignee pour le transport orientee longitudinalement et fixee aux cotes lateraux
US5054619A (en) * 1989-12-15 1991-10-08 The Procter & Gamble Company Side opening flexible bag with longitudinally oriented carrying handle secured to side panels
WO1993016929A1 (fr) * 1992-02-27 1993-09-02 Paramount Packaging Corporation Sac en matiere plastique souple a ouverture facile et son procede de fabrication
EP0585653A1 (fr) * 1992-08-06 1994-03-09 Kimberly-Clark Corporation Ouverture d'un sac d'emballage avec dégagement de la force expansive des produits emballés

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6769565B2 (en) 2000-12-26 2004-08-03 Kimberly-Clark Worldwide, Inc. Dispensing cartridge and system
US6698928B2 (en) 2001-12-21 2004-03-02 Kimberly-Clark Worldwide, Inc. Flexible packages having reusable pull-tab openers
WO2006022869A1 (fr) * 2004-07-29 2006-03-02 Kimberly-Clark Worldwide, Inc. Emballage souple doté d’un élément d’ouverture facile
CN100537368C (zh) * 2004-07-29 2009-09-09 金伯利-克拉克环球有限公司 具有容易打开特征的柔性包装
AU2005278110B2 (en) * 2004-07-29 2011-06-09 Kimberly-Clark Worldwide, Inc. A flexible package having an easy opening feature
EP2110337A1 (fr) * 2008-04-14 2009-10-21 The Procter and Gamble Company Emballage flexible avec systèmes d'ouverture
WO2009129202A1 (fr) * 2008-04-14 2009-10-22 The Procter & Gamble Company Emballage flexible avec système d’ouverture
US8074803B2 (en) 2008-04-14 2011-12-13 The Procter & Gamble Company Flexible package with side wall tear opening means
WO2010062231A1 (fr) * 2008-11-27 2010-06-03 Sca Hygiene Products Ab Sac d'emballage pour articles absorbants
US8490793B2 (en) 2011-06-22 2013-07-23 Kimberly-Clark Worldwide, Inc. Opening feature for packaging having absorbent articles contained therein

Also Published As

Publication number Publication date
HK1012165A1 (en) 1999-07-23
DE69411024D1 (de) 1998-07-16
AU7730894A (en) 1995-04-10
DE69411024T2 (de) 1998-11-19
ES2117301T3 (es) 1998-08-01
JPH09505543A (ja) 1997-06-03
CA2170975A1 (fr) 1995-03-30
EP0720574A1 (fr) 1996-07-10
ATE167148T1 (de) 1998-06-15
KR960704778A (ko) 1996-10-09
JP3421043B2 (ja) 2003-06-30
EP0720574B1 (fr) 1998-06-10
KR100356760B1 (ko) 2003-08-21

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