EP2399836B1 - Sac avec une paroi pour la dissolution en milieu humide et utilisation du sac comme sac de ciment - Google Patents

Sac avec une paroi pour la dissolution en milieu humide et utilisation du sac comme sac de ciment Download PDF

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Publication number
EP2399836B1
EP2399836B1 EP11005159A EP11005159A EP2399836B1 EP 2399836 B1 EP2399836 B1 EP 2399836B1 EP 11005159 A EP11005159 A EP 11005159A EP 11005159 A EP11005159 A EP 11005159A EP 2399836 B1 EP2399836 B1 EP 2399836B1
Authority
EP
European Patent Office
Prior art keywords
bag
valve opening
bag wall
cover sheet
wall
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.)
Active
Application number
EP11005159A
Other languages
German (de)
English (en)
Other versions
EP2399836A1 (fr
Inventor
Hans-Joachim Wichmann
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.)
Mondi AG
Original Assignee
Mondi 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 Mondi AG filed Critical Mondi AG
Priority to SI201130004T priority Critical patent/SI2399836T1/sl
Priority to PL11005159T priority patent/PL2399836T3/pl
Publication of EP2399836A1 publication Critical patent/EP2399836A1/fr
Application granted granted Critical
Publication of EP2399836B1 publication Critical patent/EP2399836B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D31/14—Valve bags, i.e. with valves for filling
    • B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E04C5/073—Discrete reinforcing elements, e.g. fibres
    • E04C5/076—Specially adapted packagings therefor, e.g. for dosing

Definitions

  • the invention relates to a bag, according to the preamble of claim 1, consisting of a bonded to a tube single-layer or multilayer bag wall having at least one side suitable for filling with filling material through a filler neck of a bag filling machine, folded and glued, formed with a valve opening bottom and which dissolves in water.
  • the invention particularly relates to the use of such a bag as a cement bag, in which the dissolution of the bag wall in a concrete mixer with water and sand and preferably gravel takes place as Switzerland Bachstoff.
  • the pouring of the dry and dusty filling material into the mixing device is problematic because a part of the contents dusted out. This is unpleasant for the operator not only because of the pollution associated with it but also potentially harmful to health.
  • the idea has arisen to design such a bag with a bag wall which dissolves in a moist environment, so that the bag with the contents can be thrown unopened into the mixing device. After dissolving the bag wall, the contents are available as required cement to produce the mortar mixture. If the bag wall, which is formed from a water-soluble paper, completely dissolves, the (paper) material of the wall for the formation of the concrete is harmless. In this method, therefore, inevitably leading to the dusting of contents opening the bag and dumping the contents could be avoided in the mixing device.
  • US 2010/0008603 A1 discloses a valve bag in which a valve opening is formed by a closable valve tube.
  • hot melt adhesive is used, which does not hinder the repulpability of the bag material for the purpose of recycling. Therefore, a water-dispersible polyamide hot melt adhesive is provided.
  • the present invention has for its object to provide a bag of the type mentioned above, that under the usual mixing conditions and usual mixing times, such as those given in a concrete mixer, completely dissolves, so that the concrete mixture produced without errors without disturbing unresolved material residues Sack wall can be produced.
  • a bag of the type mentioned is characterized in that the bonding of the soil is done with a dextrin adhesive.
  • the dextrin glue is maltodextrin with a dextrose equivalent between 4.5 and 8.5.
  • Sacks suitable for filling by a bag filling machine are generally finished with cross bottoms.
  • a cross bottom in particular, the valve opening having the bottom is formed.
  • On such a floor must be forced to put numerous layers of the bag wall each other and glued together.
  • Investigations with a fluorescent adhesive have shown that the unresolved parts of the bag wall are in particular those parts which have a plurality of layers bonded together by adhesive. It is therefore of particular importance to use an adhesive which is water-soluble.
  • Such a dextrin adhesive has not been used for the bonding, in particular the Bodenverklebung, of paper layers of a bag.
  • the adhesive according to the invention has the property that it dissolves very quickly even in a humid environment and the adjacent layers of the bag wall releases so that they are subject as individual layers of rapid dissolution in an at least humidified environment.
  • the problem solving according to the invention thus does not provide an improvement of the material of the bag wall, but by the use of a special adhesive, at least for the bonding of the soil, a rapid separation of the parts bonded to the ground parts of the bag wall, so that these parts, like the rest of the bag wall outside the ground, are exposed to a rapid and complete dissolution in the at least earth-moist environment.
  • the dissolution of the bag also succeeds particularly well in the area of folded and bonded bottoms in that the bottom flaps superimposed on the folding of the bottom overlap only slightly, preferably by a maximum of 2 cm, particularly preferably by a maximum of 1 cm ,
  • the bottom flaps preferably overlap by a maximum of 1 cm, more preferably, the bottom flaps do not overlap at all, but join together to form a possible narrow slit.
  • the sealing of the bag takes place in the area of the bottom flaps with a glued bottom cover sheet.
  • the valve opening into which the filling tube of a bag filling machine can enter laterally is formed between the bottom flaps and the bottom cover sheet.
  • the bottom flaps overlap above a corner impact of the soil by a maximum of 2 cm, wherein the valve opening is formed between the bottom flaps and the corner hinge.
  • valve opening without an otherwise conventional folded valve sheet.
  • a minimization of the adhesive application can be achieved in the floor constructions according to the invention in that the bottom cover sheet has a greater width than the folded bottom and extends at least on one side over a long Bodenfaltline on the adjacent bag wall.
  • the floor construction is stabilized with little adhesive effort.
  • the bonding of the bottom cover sheet with the adjacent bag wall - seen from the bottom beyond the bottom fold line - leads to a distribution of the adhesive application for the formation of the soil on the adjacent bag wall, so that a harmful for the dissolution adhesive concentration by the first several layers of the bag on each other, is reduced.
  • the bag wall can consist of one or more layers of a readily water-soluble paper.
  • This paper is preferably not sized and contains starch only in small amounts.
  • the bag wall may also contain a water-soluble film, ie consist of at least one layer of paper and at least one layer of water-soluble film.
  • the bag of the invention is preferably used as a cement bag, the bag wall is dissolved in a concrete mixer with water and sand as an aggregate. It has been shown that the dissolution of the bag wall is further supported by the fact that, in addition to sand, gravel is also used as an additive for the concrete. In particular, for this application, a perfect resolution of the bag wall and the production of a faultless concrete part can be achieved.
  • the sole drawing figure shows a bag wall glued to a hose, in which corner impacts have been made to form cross bottoms at both ends of the hose.
  • the drawing thus shows a flat hose 1 of a bag wall 2, in which a lower layer and an upper layer thus lie on one another.
  • the bag made of the tube 1 is closed at the top and bottom, each with a bottom 3, 4. Both floors are designed as cross floors.
  • the cross floors are formed in the usual way of corner fences 5, 6, which are made of a mere folding of the tube 1, starting from the longitudinal side edges. Due to the corner impact, the upper bag wall 2 is folded back on itself about a middle fold line 7, while the lower bag weight 2 continues through the corner fold 5, 6 and forms the other half of the bottom material.
  • Two fold lines 8 running parallel to the fold line 7 separate bottom flaps 9, 10 which can be folded around the fold lines 8 against each other.
  • the regions 11 may be provided with an adhesive application.
  • a valve opening 13 between the corner wedge 6 and the bottom flaps 9, 10 is formed by an adhesive connection between the corner wedge 6 and the two bottom flaps 9, 10 is dispensed with in the region of the valve opening 13.
  • the connection of the bottom flaps 9, 10 is ensured by the glued ground cover sheet 12.
  • the bottom cover sheet 12 is provided over its length, which corresponds to the width of the subsequent bag, with a strip 14 which engages over the lying away from the bottom cover sheet 12 fold line 8 on the adjacent bag wall and is glued there over the entire surface with an adhesive application. This bonding takes place only when the bottom flaps 9, 10 are already folded, so that the strip 14 projects beyond the folded bottom 4.
  • the adhesive is applied differently to the bottom 3, which is not provided with the valve opening 3, than to the bottom 4, which forms the valve opening 13.
  • the valve opening is formed by an inserted, folded valve leaflets. This is preferably dispensed with in the bag according to the invention.
  • a bottom formation can be used as in the EP 1 914 173 B1 is described.
  • This floor is the valve opening between the bottom flaps 9, 10 and the bottom cover sheet 12.
  • the bottom flaps have no or only a small degree of overlap.
  • At least the critical adhesive application for the bottom 4, which is provided with the valve opening 13, is carried out with a dextrin adhesive, preferably with maltodextrin. It is particularly preferred if the other bottom 3 is also glued to a dextrin adhesive.
  • the bag shown is particularly suitable as a cement bag, which can be thrown with its cement content in a closed form in the concrete mixer, because he is there in the humid environment, which is formed by water and sand, preferably provided with gravel.
  • the bag wall 2 consists of per se known water-soluble paper containing starch in only small amounts and is used as non-sized paper.
  • the bags according to the invention are also suitable for filling with fiber materials which are added to a concrete, a screed or the like. Also for these applications, the water-soluble bag according to the invention can be used because it completely dissolves completely harmless to the final mixture. Also for the addition of fiber materials to curing mixtures there is the advantage that the dumping of the fiber materials is avoided in the mixing device, so that the burden of fine dusts and especially harmful to health fine fiber components can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bag Frames (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Tubes (AREA)

Claims (8)

  1. Sac, constitué d'une paroi de sac monocouche ou multicouche collée en une gaine (1), cette paroi présentant au moins d'un côté un fond (4) approprié pour le remplissage en produit de remplissage à travers un raccord de remplissage d'une machine de remplissage, le fond étant plié et collé, et réalisé avec une ouverture de soupape (13), la paroi se désintégrant dans l'eau avec libération du produit de remplissage, caractérisé en ce que le collage du fond (4) a eu lieu par une colle à base de dextrine.
  2. Sac selon la revendication 1, caractérisé en ce que la colle à base de dextrine est de la maltodextrine avec un équivalent en dextrose compris entre 4,5 et 8,5.
  3. Sac selon la revendication 1 ou 2, caractérisé en ce que pour le pliage du fond, des rabats de fond (9, 10) sont constitués, ces rabats se chevauchent de 1 cm maximum et sont recouverts d'une feuille de couverture de fond (12), et en ce que l'ouverture de soupape est formée entre les rabats de fond (9, 10) et la feuille de couverture de fond (12).
  4. Sac selon la revendication 1 ou 2, caractérisé en ce que les rabats de fond se chevauchent au-dessus d'un repli d'angle (6) du fond (4) et forment l'ouverture de soupape (13) avec le repli d'angle.
  5. Sac selon l'une des revendications 1 à 4, caractérisé en ce que l'ouverture de soupape (13) est formée sans feuillet de soupape plié.
  6. Sac selon l'une des revendications 1 à 5, caractérisé en ce que le fond est formé avec des rabats de fond (9, 10) rabattables l'un contre l'autre autour de lignes de pliage (8), et en ce que la feuille de couverture de fond (12) présente une plus grande largeur que le fond plié (4) et s'étend au moins d'un côté sur la paroi de sac voisine au-delà d'une ligne de pliage (B) du fond.
  7. Utilisation d'un sac selon l'une des revendications 1 à 6 comme sac de ciment avec désintégration de la paroi (2) du sac dans une bétonnière avec de l'eau et du sable comme additif.
  8. Utilisation selon la revendication 7, avec du gravier comme additif supplémentaire.
EP11005159A 2010-06-28 2011-06-24 Sac avec une paroi pour la dissolution en milieu humide et utilisation du sac comme sac de ciment Active EP2399836B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201130004T SI2399836T1 (sl) 2010-06-28 2011-06-24 Vreča, obdana s steno za raztapljanje v mokrem okolju ter uporaba vreče kot vreče za cement
PL11005159T PL2399836T3 (pl) 2010-06-28 2011-06-24 Worek ze ściankami rozpuszczalnymi w wilgotnym otoczeniu i zastosowanie worka jako worka do cementu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010026241A DE102010026241A1 (de) 2010-06-28 2010-06-28 Sack mit einer zur Auflösung in feuchter Umgebung ausgelegten Sackwandung und Verwendung des Sackes als Zementsack

Publications (2)

Publication Number Publication Date
EP2399836A1 EP2399836A1 (fr) 2011-12-28
EP2399836B1 true EP2399836B1 (fr) 2012-07-11

Family

ID=44674018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11005159A Active EP2399836B1 (fr) 2010-06-28 2011-06-24 Sac avec une paroi pour la dissolution en milieu humide et utilisation du sac comme sac de ciment

Country Status (12)

Country Link
US (1) US8851752B2 (fr)
EP (1) EP2399836B1 (fr)
DE (1) DE102010026241A1 (fr)
DK (1) DK2399836T3 (fr)
ES (1) ES2391168T3 (fr)
HR (1) HRP20120805T1 (fr)
MX (1) MX2011006990A (fr)
PL (1) PL2399836T3 (fr)
RS (1) RS52466B (fr)
RU (1) RU2561021C2 (fr)
SI (1) SI2399836T1 (fr)
UA (1) UA104162C2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT514558B1 (de) * 2013-09-11 2015-02-15 Mondi Ag Wasserlösliches, ungebleichtes Sackpapier sowie Papiersack
CN110169600B (zh) 2014-03-19 2021-11-26 菲利普莫里斯生产公司 气溶胶生成系统和制造方法
PL2963178T3 (pl) * 2014-07-04 2016-12-30 Wytwarzanie papieru workowego
EP3088606A1 (fr) 2015-04-29 2016-11-02 BillerudKorsnäs AB Papier d'ensachage brun désintégrable
DE202021102384U1 (de) * 2021-05-04 2022-08-05 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Sack für Schüttgut
AT525239B1 (de) * 2022-03-18 2023-02-15 Baumit Beteiligungen Gmbh Papiersack mit Sackinhalt

Family Cites Families (23)

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Publication number Priority date Publication date Assignee Title
US1933776A (en) * 1930-07-29 1933-11-07 Bartlett Arkell Multi-ply bag and method of producing same
US2776084A (en) * 1953-03-25 1957-01-01 Bemis Bro Bag Co Bag
US3058647A (en) * 1960-02-10 1962-10-16 Owens Illinois Glass Co Multi-ply bag
US3220601A (en) * 1962-05-28 1965-11-30 Union Carbide Corp Thermoplastic film bag
US3203620A (en) * 1963-01-24 1965-08-31 Bemis Bro Bag Co Bags with pinch-type end closure
LU50779A1 (fr) * 1966-03-29 1967-09-29
DE1935816A1 (de) * 1968-07-18 1970-01-22 Natro Cellulosa S P A Aus einer oder mehreren Lagen oder Folien aus Papier,Plastik- oder Kunststoffmaterial oder aus einem anderen gleichwertigen Material bestehender Ventilsack oder -beutel
US3632039A (en) * 1970-08-25 1972-01-04 Nat Patent Dev Corp Laundry bag
GB1583082A (en) * 1977-05-18 1981-01-21 Unilever Ltd Detergent products
FI61319C (fi) 1977-08-03 1982-07-12 Vehnae Ab Oy Foerfarande foer framstaellning av huvudsakligen av staerkelsebestaoende papperssaeckslim
US4344558A (en) 1980-07-07 1982-08-17 St. Regis Paper Company Pinch bottom valve bag
GB8612706D0 (en) * 1986-05-23 1986-07-02 Unilever Plc Sealable container
JP2824606B2 (ja) * 1990-11-07 1998-11-11 大成建設株式会社 セメント混和材料及び／又は混和剤包装体並びにセメント混和材料及び／又は混和剤の添加方法
FI98292C (fi) 1994-12-05 1997-05-26 Upm Kymmene Oy Pohjasäkki
US5932639A (en) * 1996-05-06 1999-08-03 National Starch And Chemical Investment Holding Corporation Maltodextrin-based adhesives
JPH10258845A (ja) * 1997-03-19 1998-09-29 Kanpai:Kk 水分散性セメント袋
CA2372052C (fr) 2002-02-12 2007-01-09 Hood Packaging Corporation Sac en papier a parois multiples
GB0228618D0 (en) * 2002-12-07 2003-01-15 Grt Ltd Method & apparatus for packing powdered or granular material
ATE446906T1 (de) * 2003-10-31 2009-11-15 Henkel Ag & Co Kgaa Verpackungsverfahren
DE102006050461B4 (de) 2006-10-20 2009-07-09 Mondi Ag Ventilsack
GB2448486A (en) * 2007-04-19 2008-10-22 Thomas Colin Raymond Hall Industrial cement, lime and plaster bags
DE202008003172U1 (de) * 2008-03-06 2008-05-08 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Ventilbodensack
US20100008603A1 (en) * 2008-07-09 2010-01-14 Julie Rossing Smith Sealable repulpable valve bag and method of assembling

Also Published As

Publication number Publication date
UA104162C2 (ru) 2014-01-10
SI2399836T1 (sl) 2012-12-31
RU2561021C2 (ru) 2015-08-20
ES2391168T3 (es) 2012-11-22
EP2399836A1 (fr) 2011-12-28
HRP20120805T1 (hr) 2012-11-30
RU2011126435A (ru) 2013-01-10
DE102010026241A1 (de) 2011-12-29
US20120199243A2 (en) 2012-08-09
US8851752B2 (en) 2014-10-07
PL2399836T3 (pl) 2013-02-28
US20110315272A1 (en) 2011-12-29
RS52466B (en) 2013-02-28
DK2399836T3 (da) 2012-10-15
MX2011006990A (es) 2012-01-02

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