EP3098178B1 - Ventilsack mit doppelrückschlag - Google Patents

Ventilsack mit doppelrückschlag Download PDF

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Publication number
EP3098178B1
EP3098178B1 EP16171335.9A EP16171335A EP3098178B1 EP 3098178 B1 EP3098178 B1 EP 3098178B1 EP 16171335 A EP16171335 A EP 16171335A EP 3098178 B1 EP3098178 B1 EP 3098178B1
Authority
EP
European Patent Office
Prior art keywords
slip
valve
sack
filling
bag
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
EP16171335.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3098178A1 (de
Inventor
Udo POLLAK
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.)
Papiersackfabrik Tenax GmbH and Co KG
Original Assignee
Papiersackfabrik Tenax GmbH 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 Papiersackfabrik Tenax GmbH and Co KG filed Critical Papiersackfabrik Tenax GmbH and Co KG
Priority to PL16171335T priority Critical patent/PL3098178T3/pl
Publication of EP3098178A1 publication Critical patent/EP3098178A1/de
Application granted granted Critical
Publication of EP3098178B1 publication Critical patent/EP3098178B1/de
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

Definitions

  • the present invention relates to a valve sack with double check.
  • Valve sacks with kickback are eg from the DE 195 44 072 A1 known.
  • a filling opening with a glued-in valve leaf is proposed here, this valve leaf being provided on the edge facing the interior of the bag with an outwardly facing envelope.
  • This envelope is freely foldable.
  • the use of two valve leaves, an upper and lower valve sheet is proposed, the edges of which are glued together so that between the two valve leaves, the filling is made possible.
  • One of the valve blades is provided with an envelope to improve the sealing effect.
  • Sacks with valve hoses, which have an envelope are also from the DE 1 066 481 B known.
  • the documents DE1066481B . GB2074983A . DE19544072A1 and DE842586C reveal more bags with valves.
  • Object of the present invention was to provide a valve bag with a further improved sealing effect available, so that as possible no filling material is discharged from the bag interior after filling in the valve tube.
  • Another object was to provide a valve bag available, which ensures a safe closing of the valve.
  • the first piece of paper is referred to as a valve sheet, and the second piece of paper as a check-out sheet.
  • the valve is formed from the valve leaflet, in which it is folded in two places parallel to the later filling direction and the ends are connected to each other. This creates a tubular structure which represents the filling opening or filling device. Inside this filling device is concentrically arranged, the second piece of paper; wherein an area of this second sheet protrudes toward the bag interior over the valve sheet. This area contains the setback of the second note. By two folds parallel to the direction of filling and connection of the corresponding ends of the checklist also forms a tubular structure.
  • the setback - both of the valve leaflet and - the kickback sheet extends over the entire length or the entire end of the billet, which is perpendicular to the filling direction and facing the inside of the bag.
  • the kickback can be provided with each cuts or recesses.
  • the invention is a bag made of paper. In one embodiment, it is a water-soluble paper bag, ie the paper bag dissolves in water and thus releases the contents. In a further embodiment, the bag according to the invention has cross bottoms.
  • valve leaflet and check-out list is arranged between a corner impact and the two ground impacts.
  • Valve leaflets and checklists are connected to each other so that the escape of the filler is not possible.
  • the valve leaflet is also connected to the corner impact and the bottom impacts so that the escape of the filler is not possible.
  • the return of both the valve leaflet and the check tab are not connected to any elements of the bag.
  • the kickback of the valve leaflet may be located partially in the area of the corner impact, or partially or completely in the interior of the bag, so that unimpeded access is ensured.
  • the setback of the second billet is inside the bag, that is, in the cavity bounded by the bag walls and the knocks formed therefrom, such as the corner and the ground.
  • a setback ie an envelope of the note towards the back, defined.
  • the back is in the case of the valve leaflet, the back surface of the later formed valve tube.
  • the kickback is thus not folded inwards into the valve tube, but in the opposite direction.
  • a convolution in the valve tube would be (according to the invention) an impact.
  • the setback of the second note takes place in the same direction.
  • a kind of check valve is formed by the check.
  • the contents can not penetrate into the valve tube, since it is retained by the kickback.
  • an accumulation of the filling material in the return or a filling of the flashback, which is designed like a bag, after filling leads to a compression and closing of the tubular structure.
  • the pressure generated by the setbacks thus leads to a closing of the tubular structure and reduces and / or prevents penetration of the filling material into the valve tube, in particular in the region of the valve closure, preferably the weld seam.
  • the contents could namely prevent a safe closing of the valve tube.
  • the two ends of the valve leaflet lying parallel to the filling direction are connected to one another. This can be a connection on impact as well as a connection by overlapping areas parallel to the filling direction.
  • the two lying parallel to the filling direction ends of the checklist are also connected to each other after folding. Again, it may be a joint on impact as well as an overlap of areas at the ends parallel to the filling direction of the kick-back note.
  • the joined areas of the valve leaflet and the check tab are arranged one above the other, but not congruent, ie, the compounds are each parallel to the filling direction, but shifted from each other.
  • the respective areas of the slips which are connected to one another may represent the ends parallel to the filling direction or areas which extend from the respective end of the slab in the direction of the center of the slit.
  • an area parallel to the fill direction of the check tab overlaps both a region at the opposite end of the check tab and an area parallel to the fill direction at the end of the valve leaflet.
  • the setbacks can form pockets in which the filling material can penetrate, thus leading to a tight closure of the filling device, so the valve. A discharge of the filling material is thereby avoided after filling the bag and removing the filling nozzle.
  • the arrangement according to the invention also ensures a trouble-free filling, since the filling device, which has the necessary rigidity for the filling, is provided by the connections of the ends of the valve leaflet and the check tab lying parallel to the filling direction.
  • the checklist also prevents unintentional closing or sticking of the valve.
  • the valve is provided with a weldable layer.
  • the weldable layer is located in areas of the valve leaflet that are not overlapped by the checklist.
  • the valve can be welded by exposure to heat, ultrasound or high-frequency electromagnetic radiation. For this purpose, hot air, welding guns and / or ultrasonic systems are used.
  • the weldable layer can be a Polyethylene, Surlyn or Hotmeltbe Anlagenung.
  • the filling device comprises a thermo-valve. It is a valve, which is coated with plastic, so that after filling the paper bag, this can be thermally sealed.
  • the filling device comprises a thermo-outer valve, that is, this protrudes outward with respect to the ground impact and / or the corner impact.
  • the sealable layer must also be water-soluble, at least dispersible or emulsifiable. Furthermore, it must not have negative effects on the contents.
  • coatings containing, for example, polyvinyl alcohol, polyvinyl acetate, copolymers of ethylene and polyvinyl acetate and / or dextrin, preferably containing polyvinyl acetate and dextrin.
  • a cover sheet is attached to the bottom of the stand and / or on the top.
  • the cover sheet forms the outermost layer, or the conclusion of the bag or the bag closure.
  • the cover sheet is firmly connected to the underlying, folded floor coverings and / or corner fences. In some areas, the connection can be made only selectively or in one embodiment, one or more unlinked areas between the cover sheet and ground impact present.
  • the cover sheet on the bottom of the valve is additionally firmly connected to the filling device, the valve.
  • connections between the individual elements of the bag can be solvable or not solvable.
  • regions of the individual elements of the sack are preferably glued or glued.
  • conventional adhesives are used, for example, glue, starch adhesive, dispersion adhesive, etc.
  • water-soluble or water-emulsifiable or dispersible adhesives are used, such as the abovementioned coatings ,
  • the paper bag according to the invention contains a barrier layer.
  • This barrier layer is a foil or a coated material.
  • the film may consist of one or two or more webs extending parallel to each other from the top to the bottom of the bag. One edge of a web can be fastened to the inner or outer layer of paper, while in each case one free edge can overlap a fixed edge.
  • the film may also be glued along the longitudinal seam, whereby the bag would be hermetically sealed.
  • the bags according to the invention are used for bulk goods, preferably fine-grained bulk material such as food, animal feed, gypsum, cement, granules, fertilizers, chemical precursors, etc., which are granulated, granulated, powdered or broken up as packaged goods.
  • fine-grained bulk material such as food, animal feed, gypsum, cement, granules, fertilizers, chemical precursors, etc.
  • the pressure on the weld seam of the valve is additionally reduced, so that leakage of the filling material is prevented.
  • the double check reduces penetration of the filling material into the valve tube and / or prevents it
  • the position of the valve closure that is to say the weldable layer between the check and the valve opening, can be freely selected for the exterior of the bag and adapted to the respective mechanical or local conditions.
  • an application of the weldable layer could be removed from the filling opening, that is to say to the interior of the bag, it would be advantageous for the storage of not yet filled bags under moist conditions. This avoids unintentional closing of the valves before filling.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP16171335.9A 2015-05-26 2016-05-25 Ventilsack mit doppelrückschlag Active EP3098178B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16171335T PL3098178T3 (pl) 2015-05-26 2016-05-25 Worek wentylowy z podwójnym zagięciem do tyłu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202015102691.9U DE202015102691U1 (de) 2015-05-26 2015-05-26 Ventilsack mit Doppelrückschlag

Publications (2)

Publication Number Publication Date
EP3098178A1 EP3098178A1 (de) 2016-11-30
EP3098178B1 true EP3098178B1 (de) 2018-09-26

Family

ID=53677251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16171335.9A Active EP3098178B1 (de) 2015-05-26 2016-05-25 Ventilsack mit doppelrückschlag

Country Status (3)

Country Link
EP (1) EP3098178B1 (pl)
DE (1) DE202015102691U1 (pl)
PL (1) PL3098178T3 (pl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015004837U1 (de) * 2015-07-07 2016-10-13 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Ventilsack
DE202015006392U1 (de) * 2015-09-11 2016-12-13 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Ventilsack
DE202017101953U1 (de) * 2017-04-03 2017-05-10 Papiersackfabrik Tenax Gmbh & Co. Kg Stapelbarer Ventilsack
DE202017104714U1 (de) 2017-07-26 2017-11-10 Papiersackfabrik Tenax Gmbh & Co. Kg Beschichtetes Ventil für einen Ventilsack

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE842586C (de) * 1950-09-17 1952-06-30 Verpackungsbedarf G M B H Ventilsack aus Papier od. dgl.
DE1066481B (de) 1958-04-19 1959-10-01 Herzberger Papierfabrik L. Osthushenrich G.m.b.'H., Herzberg (Harz) Innenventil für säcke und beutel aus papier oder ähnlichem material
DE1199118B (de) 1962-02-05 1965-08-19 Windmoeller & Hoelscher Kreuzbodenventilsack und Vorrichtung zu seiner Herstellung
GB2074983B (en) * 1980-05-02 1983-12-14 Bpb Industries Ltd Filling valve for a bag or sack
DE19544072A1 (de) 1995-11-25 1997-05-28 Herkules Verpackung Ventilsack
AT514558B1 (de) 2013-09-11 2015-02-15 Mondi Ag Wasserlösliches, ungebleichtes Sackpapier sowie Papiersack

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE202015102691U1 (de) 2015-07-08
PL3098178T3 (pl) 2019-03-29
EP3098178A1 (de) 2016-11-30

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