WO2018166833A1 - Sac à valve multicouche - Google Patents

Sac à valve multicouche Download PDF

Info

Publication number
WO2018166833A1
WO2018166833A1 PCT/EP2018/055368 EP2018055368W WO2018166833A1 WO 2018166833 A1 WO2018166833 A1 WO 2018166833A1 EP 2018055368 W EP2018055368 W EP 2018055368W WO 2018166833 A1 WO2018166833 A1 WO 2018166833A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
valve
vent
recesses
base
Prior art date
Application number
PCT/EP2018/055368
Other languages
German (de)
English (en)
Inventor
Walter Plattner
Jens Stamm
Michael Merschmann
Alexander Diener
Andreas Braun
Original Assignee
Dy-Pack Verpackungen Gustav Dyckerhoff 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 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh filed Critical Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh
Priority to EP18710808.9A priority Critical patent/EP3541717B1/fr
Publication of WO2018166833A1 publication Critical patent/WO2018166833A1/fr

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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags
    • 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
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • 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
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • 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

Definitions

  • the invention relates to a valve bag for bulk material such as cement, gypsum, granules, animal feed or the like, from a two- or multi-layer sheet material, preferably paper and / or plastic, and with a floor stand and a floor standing opposite the valve bottom.
  • standing and / or valve bottom are formed in a cross or block bottom folding manner.
  • a valve for filling the valve bag is incorporated.
  • such bags have one or more paper layers, which may also consist of a paper composite and / or coated paper, and may optionally be provided as a liner, a plastic film.
  • Such bags are well known and are used in particular for the packaging and transport of fine-grained bulk material. Usual sizes are 5kg, 10kg or 25kg.
  • a multilayer bag is z. As described in DE 20 2014 000 194, and a bag with intermediate plastic film in EP 1 858 769 B1.
  • Such sacks are usually webs of the sheet material, for. B. paper webs, piled up in a tube machine and closed to form an endless tube, which is then cut into pieces of suitable length, from which finally formed the bag is, for. B. by way of a cross or block bottom folding.
  • such bags are formed from a two- or multi-layer, typically rectangular blank of sheet material.
  • the bag bottoms are usually prepared by a suitable folding, wherein at the end of the sack manufacturing process, the bottom fold is fixed, for. B. by a suitable bond.
  • a strip-shaped transverse bonding is usually mounted between the webs, u. a. to avoid that the material layers of the blank shift against each other during the further sack manufacturing process. It is already known to carry out the transverse bonding as a continuous adhesive line, or as a line of equidistant closely adjacent adhesive dots. Typically, the transverse bonding is applied at both ends of the hose pieces, but it is also conceivable to attach the transverse bonding only at one end of a piece of hose.
  • valve bags To fill such valve bags is in the valve bottom a valve, z. B. in the form of a valve tube, incorporated.
  • the bag with the valve is plugged onto the filler neck of a bottling plant, and the contents are introduced into the bag with a stream of air. This requires venting of the bag during and after filling. In suitably trained paper bags, the venting usually takes place through the paper walls of the bag.
  • the invention has for its object to propose improved ventilation for multi-layer valve bags, especially in the field of soils, especially in the area of the valve bottom, the stability and strength of the bag should be as little as possible affected at the lowest cost and ease of manufacture.
  • At least one of the trays with transverse bonding is designed as a vent bottom.
  • the vent bottom has a bottom fold in which side flaps are folded to extend the bottom longitudinal direction sofalzlinien to put the bottom.
  • the side flaps have a width which is smaller together than the width of the applied vent base, so that when the vent bottom is a gap between the side flaps remains.
  • the transverse gluing in the area of both side flaps of a ventilation floor has recesses through which air can escape from the intermediate space between the layers of material connected to the transverse gluing.
  • the total width of all recesses in a side flap is several centimeters, preferably at least 2 cm, more preferably at least 4 cm and even more preferably at least 6 cm or at least 8 cm.
  • the total width of the recesses occupies at least 30% of the length of the edge of a side flap facing the gap, preferably at least 50% and more preferably at least 70% of said length.
  • the recesses of a side flap can be formed by two recesses with a few centimeters wide, which are arranged symmetrically to the longitudinal center of the side flap. Alternatively, it is also conceivable to arrange a very wide recess in the longitudinal center of the side flap, z. B. of at least 5cm, preferably at least 7cm and more preferably at least 9cm width.
  • the recesses are symmetrical to each other on both sides of the gap.
  • a very uniform ventilation of the front and the rear wall can be achieved.
  • the recesses may be formed in such a way that some adhesive dots are omitted from a line with equidistant adhesive dots.
  • the recesses can be realized by the fact that in an adhesive line with equidistant adhesive dots, the free distance between adhesive dots is chosen sufficiently large, so that a good venting is possible.
  • the invention allows cost savings through material savings, because due to the narrower side flaps of the vent panels according to the invention, the bag can be made with shorter pieces of tubing.
  • the valve bottom is designed as a vent bottom.
  • This makes possible, especially in the final phase of the filling process, an improved ventilation, so that the filling speed does not have to be reduced or only to a lesser extent towards the end of the filling.
  • the floor standing is designed as a vent floor. This allows, in particular after removal of the bag from the filler neck of the filling system, an improved residual ventilation of the bag. It is particularly advantageous if the valve and floor are designed as a vent floor.
  • the innermost material layer of the bag material is formed from an air-permeable material.
  • This may preferably be paper, which may additionally be perforated, in particular if it is provided with a coating which reduces the air permeability.
  • a perforated plastic film is conceivable as an air-permeable material.
  • At least one outer material layer of the sack mate neck is formed from an air- and / or water-impermeable material, advantageously from a plastic film or coated paper.
  • a material layer can, as already mentioned, z. B. the entry of moisture or gaseous substances from the outside are avoided in the bag or the contents are protected from external influences.
  • the venting according to the invention makes it possible for the air to be guided along this layer of material to the ventilation floor and escape there through the recesses in the transverse gluing.
  • the bag according to the invention is formed in three layers, with an innermost and an outermost layer of material made of paper and interposed a plastic film.
  • the intermediate plastic film protects the contents from moisture and the inner paper layer, together with the inventive design of the vent floor ensures the vent, while the outer paper layer provides strength.
  • the gap between the side flaps is at least 1 cm wide, more preferably at least 2 cm wide, and even more preferably at least 3 cm wide.
  • the vent bottom is sealed with an inserted into the open bottom of the inner bar, so that in the area of the vent floor no filling material can escape from the bag.
  • the sealing is carried out by a peripheral to the edge of the inner bolt bonding with the open vent bottom.
  • the necessity of sealing against Gregutaustritt results from the fact that in the vent bottom according to the invention between the side flaps remains a gap could escape through the contents, if it would not be closed to the bag interior. This closing can be done by a conventional manner in the venting the inserted inner hanger.
  • the inner bar is formed of PE-coated paper or plastic film. This can prevent moisture from entering the bag in the area of the inner bar.
  • the inner bar is made of an air-permeable material, preferably paper. Then it can also be vented through the inner latch, especially in the region of the gap between the side flaps, and so the ventilation performance can be further increased.
  • the vent base is glued over with a cover sheet in such a way that, moreover, an escape of the air emerging from the recesses in the transverse gluing into the exterior space is possible.
  • This can be achieved in that the contour of the adhesive application for the cover sheet has suitable recesses, which allow the emerging from the recesses of the transverse bonding air escape to the outside, and / or in that the cover sheet is made of highly porous paper. It is achieved by pasting over the cover sheet, that the gap between the side flaps of the vent base is closed. Therefore, with an appropriate cover sheet overcoat, it may be possible to dispense with an internal bolt. With a cover sheet of PE-coated paper, the bag against the ingress of z. B. moisture can be protected.
  • Fig. 1 a schematic plan view of a bag according to the invention with in
  • Fig. 2 a plan view of an open bottom of an inventive
  • Sackes in Wienitzfaltweise 3 shows a schematic view of an endless paper web for producing a bag according to the invention
  • FIG. 4 shows a schematic view of a two-ply paper blank for producing a bag according to the invention with recesses in the transverse bonding
  • FIG. 4a shows a schematic view of a variant of the two-ply paper blank for producing a bag according to the invention with recesses in the transverse bonding
  • Fig. 5 a plan view of the open vent bottom of a bag according to the invention
  • Fig. 6 a plan view of the applied vent bottom of a bag according to the invention
  • 6a a plan view of the applied vent bottom of a variant of the bag according to the invention
  • Fig. 7 a plan view of the open, sealed with an inner bar
  • Fig. 9 a plan view of the applied vent bottom of a bag according to the invention with inner latch
  • Fig. 9a a plan view of the added vent bottom of a variant of the bag according to the invention with inner latch
  • FIG. 10 shows a schematic representation of the over-bonding of a ventilation floor according to the invention with a cover sheet
  • Fig. 1 1 a schematic representation of the vent in a bag according to the invention
  • FIG. 1 shows a bag 10 according to the invention with a base 20 and a valve bottom 30, into which a valve tube 12 is inserted for filling the bag.
  • the bottoms 20, 30 are folded on the front or front wall 14 of the bag.
  • the back or rear wall of the bag is below the front wall and Figure 1 is not visible.
  • Stand and valve bottom 20, 30 are formed in Buchêtfaltweise and each provided with a cover sheet 21, 31. Under the cover sheet 31 of the valve bottom, the contours of the side flaps 38, 39 of the valve bottom 30 are shown in dashed lines.
  • the bag is made of two-ply paper, wherein the inner paper ply is not visible in the outside view according to FIG.
  • Figure 2 shows the open valve bottom 30 of a bag 10 according to the invention in Buchgeberfaltung, wherein no valve tube is used.
  • the cross bottom fold forms the two corner stops 32 and 33, as well as the side flaps 38 and 39, which are closed to close the bottom to the bottom longitudinal direction extending
  • the distance between the two side fold lines 35 and 36 corresponds to the width of the finished, applied valve bottom 30.
  • FIG. 3 shows an endless paper web for producing a bag according to the invention.
  • the contour of the bottom fold is shown, with the veryfalzlinien 25, 35 and 26, 36, the Eckein pronouncen 22, 32 and 23, 33 and the side flaps 28, 38 and 29, 39th
  • Figures 4 and 4a show a two-ply paper blank for the production of a bag according to the invention, in which both floors are designed according to the invention as a vent floor.
  • a transverse bonding 40 or 40a between the two paper layers 16 and 18 of the bag which connects the two paper layers together.
  • the transverse bond 40 is formed as a line of equidistant adhesive dots.
  • the transverse bond 40a is formed by continuous glue lines.
  • recesses 42 and 42a of the transverse bonding are formed in Fig. 4 such that in the row of equidistant adhesive dots each account for two adhesive dots, so that in the middle of the side flaps 28, 29, 38, 39 each have an adhesive point, to the symmetrical two Connect recesses that extend approximately to the fold line of the corner fences 22, 23, 32, 33.
  • the recesses 42a are formed such that the continuous glue line 40a has interruptions 42a in the region of the side flaps which are preferably arranged symmetrically to the longitudinal center of the side flaps.
  • Figures 5 and 5a show the open valve bottom 30 of a bag, which is inventively designed as a vent bottom 30, by folding from the blank shown in Figure 4 or 4a.
  • the transverse bonding 40 is designed as a line of equidistant adhesive dots.
  • the recesses 42 are in the transverse bonding, wherein a remaining adhesive point in the longitudinal center of both side flaps comes to rest, followed by symmetrical recesses 42 on both sides, which extend approximately to the inner edge of the Eckeinelle 32, 33 , This arrangement of the recesses a very good and symmetrical ventilation is achieved, while still good connection of the two Material layers 16 and 18 by the transverse bonding.
  • the transverse bonding 40a is designed in the form of continuous adhesive lines.
  • the recesses 42 a which extend symmetrically from the longitudinal center of the side flaps approximately up to the level of the inner edges of the Eckeinelle 32, 33. Also in this embodiment, a very good and symmetrical ventilation is achieved.
  • Figures 6 and 6a show the vent plates 30 of Figure 5 and 5a in the closed state. Between the folded side flaps 38 and 39 of the designated by the arrow 37 gap remains. Because the side flaps 38 and 39 do not overlap, air can escape well from the recesses 42 in both side flaps so that air flowing in from both the front wall and the rear wall can vent well. In the design according to FIG. 6, the recesses 42 together occupy approximately 40% of the length of the edges of the side flaps facing the gap 37, and approximately 50% of the recesses 42a in FIG. 6a. The gap 37 between the side flaps also saves material compared to previously known embodiments in which the side flaps 38 and 39 overlap.
  • Figure 7 shows the open vent bottom of a bag according to the invention, in which an inner bar 50 is glued.
  • Figure 8 shows a schematic representation of the laying of such a venting floor.
  • FIGS. 9 and 9a show a closed vent bottom 30 according to the invention. Between the side flaps 38 and 39 is the gap 37 through which the underlying inner latch 50 can be seen.
  • the inner bar 50 closes the bag interior in the area of the vent floor 30 and the inventive design of the bag allows air escaping from the bag to bypass the inner bar via the side flaps and exit through the recesses 42 or 42a in the transverse gluing 40 or 40a into the outer space , As with the arrows indicated, can escape through these recesses 42 and 42a air 60 from the space between the two layers of paper, from both side flaps.
  • good ventilation can take place both from the region of the front wall and from the region of the rear wall of the bag, in each case symmetrically with respect to the bag center.
  • FIG. 10 shows the application of a cover sheet 31 to a ventilation floor 30 according to the invention.
  • the contour of the adhesive application 54 for the bonding of the cover sheet 31 is designed such that the air outlet or the ventilation is not impaired.
  • the adhesive application 54 is for fixing the cover sheet on the bottom 30 to be added in the area in which are also the adhesive areas of the transverse bonding. Accordingly, there is no adhesive application for fastening the cover sheet in the region of the recesses of the transverse bonding. Thus, the exit of air 60 is affected by the attachment of the cover sheet 31 as little as possible.
  • Figure 1 1 shows schematically the vent in a bag 10 according to the invention on the vent bottom 30. Between the outer and inner paper layer 16, 18, the air 60 can reach the vent bottom 30 and there through the side flaps 38, 39 and the recesses in the transverse bonding in the Exit outside.
  • this bag allows a saving of material at the same time improved ventilation without affecting the stability and strength of the venting floor.
  • the invention allows outer layers of material of a multi-ply bag air and / or waterproof to design, at the same time good ventilation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

L'invention concerne un sac à valve conçu pour des produits en vrac, comprenant un fond plat et un fond à valve qui est opposé au fond plat. Une valve servant à remplir le sac à valve est incorporée dans le fond à valve. Le sac est produit à partir d'une découpe à deux couches ou multicouche dans un matériau plan, en particulier du papier. Cette découpe comprend, le long d'au moins un de ses bords côté fond, une zone de collage transversale qui relie des couches de matériau adjacentes. Cette invention est caractérisée en ce qu'au moins un des fonds comportant une zone de collage transversale est conçu à la manière d'un fond d'évacuation d'air comportant un ensemble de plis selon lesquels des rabats latéraux sont rabattus au niveau de lignes de pliage latérales s'étendant dans la direction longitudinale du fond pour former le fond. Les rabats latéraux sont conçus dans leur largeur de manière qu'en présence d'un fond d'évacuation d'air, il subsiste un interstice entre les rabats latéraux. La zone de collage transversale comporte, dans la région des deux rabats latéraux du fond d'évacuation d'air, des évidements qui forment une sortie pour l'air s'échappant de l'espace intermédiaire entre les couches de matériau.
PCT/EP2018/055368 2017-03-13 2018-03-05 Sac à valve multicouche WO2018166833A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18710808.9A EP3541717B1 (fr) 2017-03-13 2018-03-05 Sac à valve multicouche

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017001357.6 2017-03-13
DE202017001357.6U DE202017001357U1 (de) 2017-03-13 2017-03-13 Mehrlagiger Ventilsack

Publications (1)

Publication Number Publication Date
WO2018166833A1 true WO2018166833A1 (fr) 2018-09-20

Family

ID=61627074

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/055368 WO2018166833A1 (fr) 2017-03-13 2018-03-05 Sac à valve multicouche

Country Status (3)

Country Link
EP (1) EP3541717B1 (fr)
DE (1) DE202017001357U1 (fr)
WO (1) WO2018166833A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017103128U1 (de) * 2017-05-23 2018-08-24 Bischof + Klein Se & Co. Kg Entlüftbarer Ventilsack
IT202000013471A1 (it) * 2020-06-05 2021-12-05 Fiorini Packaging S P A Sacco privo di elementi in plastica con alta protezione dall'umidità e dall'acqua
DE202021102384U1 (de) 2021-05-04 2022-08-05 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Sack für Schüttgut

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8133295U1 (de) * 1981-11-14 1983-07-21 Nordenia-Kunststoffe Peter Mager Kg, 2841 Steinfeld Als Verpackungsmittel fuer Schuettgueter verwendbarer Sack aus vorzugsweise Kunststoffolie
EP0146819A2 (fr) * 1983-12-28 1985-07-03 Bischof und Klein GmbH & Co. Sac à valve en matière plastique
EP0767105A1 (fr) * 1995-10-02 1997-04-09 Korsnäs Wilhelmstal GmbH Papiersackfabriken Sac à valve à fond croisé ventilé
EP1858769B1 (fr) 2005-03-04 2008-10-08 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Sachet en papier
WO2012025413A2 (fr) * 2010-08-25 2012-03-01 Windmöller & Hölscher Kg Sac, procédé et dispositif de fabrication de sacs
DE202014000194U1 (de) 2014-01-10 2015-04-14 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Papiersack

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989182A (en) * 1976-02-12 1976-11-02 Great Plains Bag Corporation Vented bag
DE10356209A1 (de) * 2003-12-02 2005-07-07 Korsnäs Wilhelmstal GmbH Papiersackfabriken Geklebter Ventilbodensack
DE102010039770A1 (de) * 2010-08-25 2012-03-01 Windmöller & Hölscher Kg Sack sowie Verfahren und Vorrichtung zur Herstellung von Säcken
NO2768978T3 (fr) * 2014-02-20 2018-04-21

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8133295U1 (de) * 1981-11-14 1983-07-21 Nordenia-Kunststoffe Peter Mager Kg, 2841 Steinfeld Als Verpackungsmittel fuer Schuettgueter verwendbarer Sack aus vorzugsweise Kunststoffolie
EP0146819A2 (fr) * 1983-12-28 1985-07-03 Bischof und Klein GmbH & Co. Sac à valve en matière plastique
EP0767105A1 (fr) * 1995-10-02 1997-04-09 Korsnäs Wilhelmstal GmbH Papiersackfabriken Sac à valve à fond croisé ventilé
EP1858769B1 (fr) 2005-03-04 2008-10-08 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Sachet en papier
WO2012025413A2 (fr) * 2010-08-25 2012-03-01 Windmöller & Hölscher Kg Sac, procédé et dispositif de fabrication de sacs
DE202014000194U1 (de) 2014-01-10 2015-04-14 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Papiersack

Also Published As

Publication number Publication date
EP3541717B1 (fr) 2020-12-16
EP3541717A1 (fr) 2019-09-25
DE202017001357U1 (de) 2018-06-14

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