EP1033311A2 - Sac en papier ou en matière plastique avec languette d'ouverture - Google Patents

Sac en papier ou en matière plastique avec languette d'ouverture Download PDF

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Publication number
EP1033311A2
EP1033311A2 EP00104303A EP00104303A EP1033311A2 EP 1033311 A2 EP1033311 A2 EP 1033311A2 EP 00104303 A EP00104303 A EP 00104303A EP 00104303 A EP00104303 A EP 00104303A EP 1033311 A2 EP1033311 A2 EP 1033311A2
Authority
EP
European Patent Office
Prior art keywords
paper
tab
corner
tear
material section
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.)
Withdrawn
Application number
EP00104303A
Other languages
German (de)
English (en)
Other versions
EP1033311A3 (fr
Inventor
Sylvio Franz
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.)
F and B Verpackungen GmbH
Original Assignee
F and B Verpackungen 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
Application filed by F and B Verpackungen GmbH filed Critical F and B Verpackungen GmbH
Publication of EP1033311A2 publication Critical patent/EP1033311A2/fr
Publication of EP1033311A3 publication Critical patent/EP1033311A3/fr
Withdrawn legal-status Critical Current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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms
    • 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
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements
    • B65D75/68—Inserted or applied tearing-strings or like flexible elements extending through wrapper closure or between wrapper layers

Definitions

  • the invention relates to a paper or plastic sack with a cross bottom according to the preamble of claim 1.
  • Paper or plastic sacks of the type in question are used, where it is necessary to store or close powdery or granular contents transport.
  • the term paper or plastic sack should be used don't just drop sacks made entirely of paper or plastic; rather, all types of sacks should be included, the one and multilayered from paper, plastic, coated paper or a mixture of these materials exist.
  • Sacks of the type in question usually consist of one tube-like section of material in the area of its two axial Ends can be closed by a folded cross bottom. It can one of the two trays with a valve for easier filling of the Sacks or to be provided for ventilation during filling.
  • Sacks of the type in question are usually disposable packaging and are recycled after use. To the The sacks are emptied or the contents are removed usually cut open in the area of an end or a bottom or torn open. This usually requires a tool, for example a knife or the like. This is disadvantageous also unintentionally tore a larger opening in the sack or is cut as necessary, making controlled emptying the filling material is difficult.
  • the paper or plastic sack according to the invention especially for powdery or granular filling, initially has one essentially tubular material section.
  • This section of material can in one or multiple layers in principle in any manner and for example composed of flat paper or plastic sheets, for example glued or welded.
  • the invention is in the area of at least one of its two axial ends Paper or plastic sack in a manner known per se a cross bottom that closes the sack, the cross bottom two opposite corner folds and two side flaps having.
  • the side flaps are on the corner folds foldable and at least in some areas with these and glued together.
  • the pull tab in the filled state of the bag represents an actuating element by a User gripped and tore open, destroying the sack in the Area of the corner fold of the cross base and thus to open the Sacks can be used.
  • Material, geometry and arrangement of the Tear tabs are to be chosen so that the tear strength of the tab itself greater than the tear strength of the sack material in the area of Pull tab is, otherwise the tab will tear off.
  • the tear-open tab can, for example, in any manner from a plastic or metal thread inserted into the material of the sack or strips exist, which when torn open by the comparatively little tear-resistant material of the sack cuts or tears.
  • the tear tab is in one piece on the tubular material section molded onto the sack.
  • the pull tab through a protruding edge section of the material section be formed.
  • the tubular material section in the area of at least one Forming the corner fold inward folded side edge two to axial end of the section of material running out incisions, which in essentially symmetrical to the side edge of the flat tubular Material section are arranged and between them the outside form foldable tear tab.
  • the pull tab is not from the edge of the tubular Material section protruding molded onto this, but is rather by a foldable out of the material level, by the incisions defined section formed. The stretches Folding axis of the pull tab between the two inner axial End points of the incisions.
  • the incisions can be made at an angle to one another run, so that, for example, a trapezoidal shape of the Pull tab results.
  • the incisions parallel to each other as well to the side edge. This results in a rectangular shape of the pull tab.
  • the pull-out strength of the Tab essentially from the distance of the incisions and thus from the Width of the flap is determined, so that by choosing an easy to determine Minimum width of the tab can be ensured that the Tear open the sack there is no unintentional tearing of the flap.
  • the length of the flap determined by the length of the incisions is at least to be chosen so that the flap folded through easily gripped a user and applied the necessary traction can be.
  • the length of the incisions and thus the length of the tear tab chosen so that the folded edge of the tear tab in the folded state of the Cross bottom runs at least slightly under the side flaps. This ensures that even with a simple cross base Sack is securely closed and the contents are not inadvertently penetrate the gap that occurs when the flap is folded down can.
  • the surface of the flap facing the side flaps with the Side flaps must be glued, but care must be taken that the The strength of the adhesive does not prevent the tab from tearing open. This can, for example, by a suitable choice of the size of the adhesive surface can be achieved.
  • the sack also has a cover sheet in the area of the cross bottom, which essentially overlaps the side flaps of the cross base attached, preferably at least partially glued.
  • this can significantly increase the strength of the bottom of the sack to be enlarged and changed to carry such a glued cover page to improve the tightness of the sack.
  • the length of the incisions is preferred and thus the length of the tear tab chosen so that the Folding edge of the pull tab when the cross base is folded runs at least slightly below the cover page. This will make how already explained above for the simple cross bottom without cover sheet, an unintentional escape of the filling material through the tab gap prevented.
  • the cover sheet is preferably in the area of the overlap the pull tab glued to it in such a way that when used as intended Pull the adhesive connection between the pull tab Cover sheet and tear tab is destroyed. This will on the one hand tight sealing of the sack ensured and on the other hand a light one Tear open.
  • the comparatively low strength required the adhesive connection between the cover sheet and the tear tab can be in simply by choosing a suitable adhesive, but especially by choosing the appropriate size of the Adhesive surfaces can be achieved.
  • the cover sheet can basically consist of any material.
  • the cover sheet is preferably made of paper or plastic, preferably a fiber-reinforced plastic.
  • a Cover sheet made of fiber-reinforced plastic can be a handle, for example in the form of a stamped-in loop, can be provided around the Sack easier to transport.
  • both floors can be one Sacks according to the invention essentially identical to a cross bottom be provided with a pull tab.
  • Tear tab arranged in the area of only one bottom of the sack while the opposite floor is a filling and / or venting valve having.
  • cover sheet can then be applied to the outside facing areas of the corner inserts and side flaps and there as well as, if applicable, with the one facing outwards Surface of the tear tab are at least partially glued.
  • Fig. 1 is the axial end portion of a paper or Plastic bags 1 shown before folding the cross bottom.
  • the bag 1 has a tubular material section 2 made of a multi-layer Paper stock on which forms a flat web of material two side edges 3 and 4 is placed.
  • the material section 2 In the area of its axial end, more precisely from its end face 5 the material section 2 is provided with an incision 6. It takes effect the incision 6 the entire web, so that after unfolding of the bag 1 or two incisions after folding the bottom of the cross or cut edges 6 'and 6' 'can be seen (see FIG. 2).
  • the tear tab 7 is between the two incisions 6 'and 6 " educated.
  • the tubular material section is similar to that of Incision 7 provided with a further incision 8, which in the folded Condition causes the two cutting edges 8 'and 8 ".
  • the cutting lengths the incisions 7 and 8 are essentially in this embodiment equal.
  • the corner turn 9 is made by folding the one in FIG. 1 right corner area along the fold lines 11 inwards, with due to the incision 8 the house or gable-like shape shown of the corner turn 9 results.
  • the corner wedge 10 the incisions forming the tear tab 7 6 'and 6 ", by folding the left corner region in FIG. 1 formed inwardly along the fold lines 12, with a total of results in a flat triangular shape.
  • the tear tab 7 To form the tear tab 7, the area between the incisions 6 'and 6' 'folded outwards about the folding or folding axis 13, the two end points of the folding or folding axis through the End points of the incisions 6 'and 6 "are formed inevitably a gap 14 between the incisions 6 'and 6 ".
  • the upper side flap 15 in FIG. 3 about the folding axis 16 below on the corner turns 9 and 10 and then that in FIG. 3 lower side flap 17 about the folding axis 18 onto the side flap 15 folded (Fig. 4).
  • the two side flaps 15 and 17 are in the essentially all over with their mutually facing surfaces and in same way with those facing the side flaps 15 and 17 Glued surfaces of the corner inserts 9 and 10. It results in Area of the corner fold 9, a tight closure of the bag 1, while in the area of corner wedge 10, gap 14 first has an opening represents the interior of the sack.
  • the cross bottom of the sack 1 is with provided a cover sheet 19.
  • the cover sheet 19 consists of a the material of the bag 1 glued plastic and has an im essentially rectangular shape.
  • the cover page is essentially over the entire area with the assigned areas of the corner wrap 9, the two Side flaps 15 and 17 and the corner wrap 10 glued.
  • the gap 14 is covered by the cover sheet 19 and thus closed.
  • To seal the bag 1 is also the cover sheet 19 facing surface area 20 of the tear tab 7 at least partially glued to the cover sheet 19, but in particular by choosing the size of the adhesive surface ensures that when Pull the tear tab 7 in the direction of arrow F to loosen it slightly the sealing adhesive connection without an essential function of Tear tab damaging damage to the tear tab 7 take place can.
  • the pull tab 7 is pulled, a tear occurs of the bag 1 in the area of the corner fold 9, whereby the filling material can be removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Cartons (AREA)
  • Packages (AREA)
EP00104303A 1999-03-02 2000-03-02 Sac en papier ou en matière plastique avec languette d'ouverture Withdrawn EP1033311A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19909003A DE19909003C2 (de) 1999-03-02 1999-03-02 Papier- oder Kunststoffsack, insbesondere Ventilsack, mit Aufreißlasche
DE19909003 1999-03-02

Publications (2)

Publication Number Publication Date
EP1033311A2 true EP1033311A2 (fr) 2000-09-06
EP1033311A3 EP1033311A3 (fr) 2002-03-13

Family

ID=7899384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00104303A Withdrawn EP1033311A3 (fr) 1999-03-02 2000-03-02 Sac en papier ou en matière plastique avec languette d'ouverture

Country Status (5)

Country Link
EP (1) EP1033311A3 (fr)
CZ (1) CZ2000776A3 (fr)
DE (1) DE19909003C2 (fr)
PL (1) PL338768A1 (fr)
SK (1) SK3082000A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008119414A1 (fr) * 2007-03-29 2008-10-09 Construction Research & Technology Gmbh Sac à valve en papier à élément de fermeture intérieur
EP2138406A1 (fr) 2008-06-23 2009-12-30 Mondi AG Sac et procédé destinés à vider un sac

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105339B (de) * 1958-12-01 1961-04-20 Union Bag Camp Paper Corp Kreuzbodenpapiersack
US3081930A (en) * 1957-10-17 1963-03-19 Paper Sacks Ltd Bag opening device
US3591072A (en) * 1968-07-18 1971-07-06 Natro Cellulosa Spa Ind Leakproof bag
DE4010822A1 (de) * 1990-04-04 1991-10-10 Wilhelmstal Werke Gmbh Kreuzbodensack

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081930A (en) * 1957-10-17 1963-03-19 Paper Sacks Ltd Bag opening device
DE1105339B (de) * 1958-12-01 1961-04-20 Union Bag Camp Paper Corp Kreuzbodenpapiersack
US3591072A (en) * 1968-07-18 1971-07-06 Natro Cellulosa Spa Ind Leakproof bag
DE4010822A1 (de) * 1990-04-04 1991-10-10 Wilhelmstal Werke Gmbh Kreuzbodensack

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008119414A1 (fr) * 2007-03-29 2008-10-09 Construction Research & Technology Gmbh Sac à valve en papier à élément de fermeture intérieur
EP2138406A1 (fr) 2008-06-23 2009-12-30 Mondi AG Sac et procédé destinés à vider un sac
US8152375B2 (en) 2008-06-23 2012-04-10 Mondi Ag Bag and method for emptying a bag
RU2492126C2 (ru) * 2008-06-23 2013-09-10 Монди Аг Мешок и способ его опорожнения

Also Published As

Publication number Publication date
CZ2000776A3 (cs) 2001-11-14
DE19909003A1 (de) 2000-09-14
SK3082000A3 (en) 2000-10-09
PL338768A1 (en) 2000-09-11
DE19909003C2 (de) 2003-05-08
EP1033311A3 (fr) 2002-03-13

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