EP0264519A2 - Sachet à fond croisé avec valve - Google Patents

Sachet à fond croisé avec valve Download PDF

Info

Publication number
EP0264519A2
EP0264519A2 EP87100088A EP87100088A EP0264519A2 EP 0264519 A2 EP0264519 A2 EP 0264519A2 EP 87100088 A EP87100088 A EP 87100088A EP 87100088 A EP87100088 A EP 87100088A EP 0264519 A2 EP0264519 A2 EP 0264519A2
Authority
EP
European Patent Office
Prior art keywords
sack
valve
lip
shut
hose
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
EP87100088A
Other languages
German (de)
English (en)
Other versions
EP0264519B1 (fr
EP0264519A3 (en
Inventor
Alois Gröner
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.)
Bischof and Klein SE and Co KG
Original Assignee
Bischof and Klein SE and Co KG
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 Bischof and Klein SE and Co KG filed Critical Bischof and Klein SE and Co KG
Priority to AT87100088T priority Critical patent/ATE63518T1/de
Publication of EP0264519A2 publication Critical patent/EP0264519A2/fr
Publication of EP0264519A3 publication Critical patent/EP0264519A3/de
Application granted granted Critical
Publication of EP0264519B1 publication Critical patent/EP0264519B1/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
    • 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

Definitions

  • the invention relates to a cross or block bonding valve sack made of paper or the like.
  • Foldable material with a filling valve incorporated in one of its two sack bottoms delimited laterally by bottom side fold lines in the region of a valve-forming corner wrap, which filling valve is formed by a valve hose with an inner layer, which normally consists of a non-adhesive state for a tight closure of the valve hose can be converted into an adhesive or sealable state.
  • valve bags of this known type are filled with free-flowing or pourable filling material, the valve hose of the bag being pushed onto the filling nozzle of the filling machine.
  • This allows the inner layer of the valve hose to be in its normally non-adhesive state.
  • the inner layer of the valve hose is converted into an adhesive state, so that the valve hose can be glued together flat under pressure and thus forms a dust-tight seal of the valve channel defined by the valve hose.
  • the inner layer of the valve hose is usually designed as a thermoplastic inner coating on a paper layer forming the valve hose and is made by supplying heat, for example by means of hot air blown reactivated, ie converted into an adhesive or sealable state.
  • valve channel closure cannot be carried out properly as a result of internal contamination of the valve hose with residues. This is mainly due to the fact that when the filled sack is ejected from the filling machine and when the sack is positioned in the device for closing the valve tube, small quantities of filling material can trickle out of the sack interior or get into the valve channel. Here they then prevent the two halves of the valve tube from being flattened under pressure after the inner layer has been reactivated.
  • the invention has for its object to provide a cross or block bottom valve sack, in which the penetration of contents into the valve hose after the filling process is safely avoided, in order to be able to produce a proper, dust-tight closure of the valve hose by reactivating its inner layer.
  • valve hose at its end facing the sack interior is surmounted on its underside by a shut-off lip made of flexible material of at least valve hose width, which is under the pressure of the in the inside of the filled filling can be moved automatically into a blocking position sealing the inner valve hose opening.
  • the inner shut-off lip provided according to the invention in addition to the valve hose closes the valve hose on its inside of the sack, which is filled with filling material Reliably before small quantities of filling material trickle out, at least to such an extent that the subsequent inside closure of the valve hose is not impaired by means of its inner layer which has been converted into the adhesive or sealable state.
  • the shut-off rib can be formed by an end part which projects freely into the inside of the sack and which has a lower region on the valve-forming corner insert and in an upper region the insert which carries the valve tube and which is larger than the sack bottom width, the lower one lying outside the bottom fold lines Partial areas is fixed at the edge by connection with the bottom side envelopes.
  • the position of the shut-off lip is defined in relation to the opening of the valve hose opening into the sack, and a corresponding predetermined movement of the shut-off lip against the inner valve hose opening takes place under the pressure of the filled product in order to prevent the product from trickling out.
  • valve bag according to the invention can be recommended, in which the shut-off lip is surmounted by a separate sealing lip towards the inside of the bag. In this way, the barrier effect against a trickle of filling can be further improved.
  • shut-off lip and the sealing lip all suitable soft, pliable materials come into consideration, such as in particular plastic films, thin paper, non-woven fabric and the like.
  • the separate inner sealing lip recommends there is a sealing lip made of a material which is more flexible than that of the shut-off lip, for example from a thin plastic film, the shut-off lip then advantageously being formed from a somewhat stiffer material, for example paper.
  • the configuration according to the invention not only enables transverse dimensions of the valve tube corresponding to the base width, but also allows smaller transverse dimensions of the valve tube to be adapted without further ado to adapt the valve channel to the predetermined diameter of the filling nozzle of the automatic filling machines of the packaging company.
  • a three-layer cross-bottom valve sack made of paper is shown, in its place a cross-bottom valve sack made of one or two layers of material or in an otherwise suitable number of layers can also occur.
  • material layers consisting entirely of paper for example, material algae encompassing paper, e.g. paper laminated with plastic and / or metal foils, or intermediate layers made of metal, plastic foils and the like
  • material sides or layers consisting of paper are preferably used, which permit the use of starch-based adhesives customary in the production of paper sacks.
  • a block bottom sack can be used instead of a cross bottom sack, which differs from a cross bottom sack by the inserted side folds and the rectangular bottoms already in the unfilled state of the sack.
  • Plastic films are also considered as the bag material alone.
  • FIG. 3 which shows the bottom of the cross in the still open, ie not yet finished, closed state
  • the bottom middle fold line is denoted by 1
  • the two bottom side fold lines at 2 and 3 are each shown in dash-dot lines.
  • the two bottom envelopes of the open cross base are designated 4 and 5 and the two corner folds with 6 and 7.
  • the three layers of material arranged concentrically to one another are designated 8, 9 and 10 and staggered at the ends in a manner known per se, the layers of material also having incisions for ver Extension of the bottom side envelopes 4 and 5 are provided in the longitudinal direction of the floor.
  • the corner insert 7 is the valve-forming corner insert, onto which an insert sheet 12 made of paper is glued to produce a filling valve by means of an adhesive application 11 (FIGS. 1 and 2).
  • the insert sheet 12 has an envelope with a fold edge 13 which is oriented toward the outside of the bag, the lower envelope part 14 being glued onto the corner wrap 7 by means of the adhesive application 11.
  • the width of the insert sheet 12 exceeds the width of the finished sack bottom, which is defined by the transverse dimension between the bottom side fold lines 2 and 3.
  • the cover part 14 is connected to the bottom side envelopes 4 and 5 by adhesive layers 15 (FIG. 3) and thus fixed at the edge.
  • a valve tube 18 is glued to the upper cover part 16 of the insert sheet 12 by means of an adhesive application 17 (FIGS. 1 and 2), the width or transverse dimension of which is smaller than the width of the sack bottom, as shown in particular in FIGS. 3 to 5.
  • the valve hose 18 consists of a paper layer which is formed into a sheet by means of a longitudinal seam 19 and has an inner coating of a thermoplastic material which is normally, i.e. is in particular ineffective at room temperature, but can be converted into an adhesive or sealable state by supplying hot air in order to close flat the sealing tube 18 with a flat compression.
  • the width of the valve hose 18 is rilled in accordance with the predetermined diameter of the filling nozzle of a filling machine.
  • the upper envelope part 16 is led beyond the inner edge 20 of the corner wrap 7 to the inside of the sack and also projects beyond the valve tube 18 at its end facing the inside of the sack by a short section of about 15 to 20 mm in length.
  • This section of the upper envelope part 16 projecting over the valve hose 18 toward the inside of the bag forms a shut-off lip 21 which, under the pressure of the filling material filled into the inside of the bag, can be moved automatically into a blocking position sealing the inner opening of the valve hose 18.
  • a sealing lip 24 is provided which projects beyond the shut-off lip 21 towards the inside of the bag.
  • the sealing lip 24 is formed by an end part of a blank 25, which projects freely into the sack interior and is made, for example, of plastic film, the width of which exceeds the base width.
  • the blank 25 is glued to the bottom side envelopes 4 and 5 with the aid of adhesive applications 26 (FIG. 3) and thus, like the insert sheet 12, is fixed at the edge.
  • the blank 25 is with its facing towards the outside of the bag, with a Envelope provided end part loosely edged in the cover of the insert sheet 12, that is to say that there are no adhesive connections between the blank 25 and the insert sheet 12 in the area of the base width.
  • the upper or main part 27 of the blank 25 forms with the upper cover part 16 of the insert sheet 12 a pocket 28 which opens out towards the inside of the sack and which, like the pocket 22, can be widened by penetrating filling material in such a way that the contact movement of the shut-off lip 21 counteracts the inner valve hose opening is additionally supported.
  • the spreading movement of the pocket 22 under the action of the filled product dictates the contact movement of both the shut-off lip 21 and the sealing lip 24 against the inner valve hose opening.
  • bottom cover sheet is not provided.
  • the reinforcement of the valve in its outer edge region is taken over by the bottom side envelopes 4 and 5, which are provided in a manner known per se with incisions arranged parallel to the bag hose axis and an extension of the bottom side envelopes 4, 5 in the longitudinal direction of the bottom, i.e. outwards towards the sack corners.
  • FIG. 5 also shows a hot air blower 31 of a device for closing the filled sacks. From the mouthpiece 32 of the hot air blower 31, hot air jets are easily applied to the inner coating of the opened valve hose 18 directed to convert its inner coating into the adhesive or sealable state, so that the inner valve channel defined by the valve hose 18 can be closed dust-tight over the entire surface by pressing the valve hose 18 flat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Basic Packing Technique (AREA)
  • Revetment (AREA)
  • Pens And Brushes (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP87100088A 1986-10-24 1987-01-07 Sachet à fond croisé avec valve Expired - Lifetime EP0264519B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100088T ATE63518T1 (de) 1986-10-24 1987-01-07 Kreuz- oder klotzbodenventilsack.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8628387U 1986-10-24
DE8628387U DE8628387U1 (de) 1986-10-24 1986-10-24 Kreuz- oder Klotzbodenventilsack

Publications (3)

Publication Number Publication Date
EP0264519A2 true EP0264519A2 (fr) 1988-04-27
EP0264519A3 EP0264519A3 (en) 1989-03-15
EP0264519B1 EP0264519B1 (fr) 1991-05-15

Family

ID=6799546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100088A Expired - Lifetime EP0264519B1 (fr) 1986-10-24 1987-01-07 Sachet à fond croisé avec valve

Country Status (6)

Country Link
US (1) US4759640A (fr)
EP (1) EP0264519B1 (fr)
AT (1) ATE63518T1 (fr)
CA (1) CA1264463A (fr)
DE (2) DE8628387U1 (fr)
ES (1) ES2022816B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041454A1 (fr) * 1997-03-18 1998-09-24 Upm-Kymmene Oy Sac a valve

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8811184U1 (de) * 1988-09-05 1988-11-10 Bischof Und Klein Gmbh & Co, 4540 Lengerich Kreuz- oder Klotzbodenventilsack
US5516210A (en) * 1994-05-10 1996-05-14 Stone Container Corporation Self-closing sealable valve bag
US5806982A (en) * 1994-05-10 1998-09-15 Stone Container Corporation Self-closing sealable valve bag
DE19544072A1 (de) * 1995-11-25 1997-05-28 Herkules Verpackung Ventilsack
US5967664A (en) * 1996-05-07 1999-10-19 Stone Container Corporation Sift proof valve bag
US6013018A (en) * 1996-09-05 2000-01-11 Bemis Company, Inc. Sonic valve closure assembly for valve bags
US6126316A (en) * 1996-09-05 2000-10-03 Bemis Company, Inc. Automatic self-closing valve closure assembly for valve bags
US6164823A (en) * 1998-12-07 2000-12-26 Southern Bag Corporation, Ltd. Valve bag and method for making a valve bag
US6074095A (en) * 1999-02-16 2000-06-13 Bemis Company, Inc. Four member valve closure assembly for valve bags
US6499879B2 (en) 2001-05-02 2002-12-31 Hood Packaging Corporation Sealable valve bag and method for making a sealable valve bag
US6932508B2 (en) * 2002-12-20 2005-08-23 Smurfit-Stone Container Enterprises, Inc. Positive valve closure for plastic-lined bags and method for making same
DE202006018230U1 (de) * 2006-11-30 2008-04-10 Stabilo International Gmbh Stift
US8142077B2 (en) * 2008-04-16 2012-03-27 Graphic Packaging International, Inc. Bag structures and methods of assembling the same
US20100008603A1 (en) * 2008-07-09 2010-01-14 Julie Rossing Smith Sealable repulpable valve bag and method of assembling
WO2014078340A1 (fr) * 2012-11-14 2014-05-22 Graphic Packaging International, Inc. Sac non tamisant
DE202013006198U1 (de) * 2013-07-09 2014-10-13 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Ventilsack
NO2768978T3 (fr) * 2014-02-20 2018-04-21
CN106043924A (zh) * 2016-07-19 2016-10-26 河南佰嘉新型节能材料有限公司 一种防漏阀口及含有该阀口的包装袋及其制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH138826A (de) * 1929-05-14 1930-03-31 Sautter Wilhelm Mit Druckwasser betriebene Zapfanlage für Flüssigkeiten, welche leichter als Wasser und mit diesem nicht mischbar sind.
US3081930A (en) * 1957-10-17 1963-03-19 Paper Sacks Ltd Bag opening device
NL274369A (fr) * 1961-02-07
DE1260958B (de) * 1964-02-04 1968-02-08 Windmoeller & Hoelscher Kreuzboden-Ventilsack aus Papier sowie Verfahren zum Herstellen und Befestigen seiner Ventileinlage
DE1436838A1 (de) * 1965-11-02 1969-07-10 Sessbruegger & Van Delden Papi Schlauchfoermige Ventileinlage fuer Ventilsaecke
US4049191A (en) * 1976-02-02 1977-09-20 Great Plains Bag Corporation Block bottom valve bag
US4095736A (en) * 1976-10-22 1978-06-20 International Paper Company Bag closure having valve sleeve
DE2935971C2 (de) * 1979-09-06 1985-08-01 Bischof Und Klein Gmbh & Co, 4540 Lengerich Kreuz- oder Klotzbodenventilsack aus Papier oder Papier umfassendem Werkstoff
ATE53979T1 (de) * 1984-12-05 1990-07-15 Svd Verpackungen Gmbh Mehrlagiger seitenfaltenventilsack aus papier.
DE8534301U1 (de) * 1985-12-06 1986-01-23 Bischof Und Klein Gmbh & Co, 4540 Lengerich Kreuz- oder Klotzbodenventilsack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041454A1 (fr) * 1997-03-18 1998-09-24 Upm-Kymmene Oy Sac a valve

Also Published As

Publication number Publication date
ATE63518T1 (de) 1991-06-15
US4759640A (en) 1988-07-26
EP0264519B1 (fr) 1991-05-15
ES2022816B3 (es) 1991-12-16
CA1264463A (fr) 1990-01-16
EP0264519A3 (en) 1989-03-15
DE3770111D1 (de) 1991-06-20
DE8628387U1 (de) 1986-12-04

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