EP0357835A2 - Sac à valve à base croisée - Google Patents

Sac à valve à base croisée Download PDF

Info

Publication number
EP0357835A2
EP0357835A2 EP88118601A EP88118601A EP0357835A2 EP 0357835 A2 EP0357835 A2 EP 0357835A2 EP 88118601 A EP88118601 A EP 88118601A EP 88118601 A EP88118601 A EP 88118601A EP 0357835 A2 EP0357835 A2 EP 0357835A2
Authority
EP
European Patent Office
Prior art keywords
sack
hose
filter
filter valve
valve
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
EP88118601A
Other languages
German (de)
English (en)
Other versions
EP0357835A3 (en
EP0357835B1 (fr
Inventor
Alois Gröner
Fabien Rencurosi
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 AT88118601T priority Critical patent/ATE88965T1/de
Publication of EP0357835A2 publication Critical patent/EP0357835A2/fr
Publication of EP0357835A3 publication Critical patent/EP0357835A3/de
Application granted granted Critical
Publication of EP0357835B1 publication Critical patent/EP0357835B1/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 bottom valve sack made of paper, plastic film or the like.Foldable material for in particular dusty or powdery filling material, with a sack base incorporated in one of its two sack bottoms delimited laterally by bottom side fold lines in the area of a valve-forming corner wrap, which has a pneumatic valve on the filler neck Filling device that can be pushed on and that has a filter valve hose protruding from the corner of the valve-forming corner into the sack made of a gas-permeable filter material that retains filling material particles.
  • perforations of the sack material for sack ventilation can be dispensed with, since here the filling valve can even vent the sack during the filling process via the filter valve hose by using filter material for the valve hose. It turns out, however, that the filter valve hose pushed onto the filler neck of the filling device to carry out the filling process cannot tightly enclose the filler neck during the filling of the sack in such a way that air does not also bypass the filter material via the annular gap between the inner circumference of the filter valve hose and the outer circumference of the filler neck can emerge from the sack.
  • the invention is therefore based on the object of creating a cross or block bottom valve sack of the type specified, in which, without perforations and the like. Vent openings in the sack material, reliable venting of the sack is achieved in particular during the filling process via the filter valve hose, but at the same time one Dusting of filling material particles is avoided with certainty.
  • the filter valve hose is provided in its end region protruding into the sack with a narrowing cross-section tapering towards the inner end edge of the filter valve hose, the filter valve hose is designed in its inner end region as a sealing collar acting as a clamping ring, which in the on the filler neck of the Filling machine pushed open state of the valve bag sealingly receives the filler neck end with a corresponding conical taper.
  • the air can be removed from the inside of the sack during the filling process by suction via the filler neck of the filling machine if, in addition to an inner tube for pneumatically filling the sack with the contents, it has a concentric outer jacket tube which is connected to a suction source and in it outer circumferential wall is provided with suction slots which, when the valve bag is plugged onto the filler neck, are overlapped by the area of the filter valve hose which is kept free of the cross-sectional constriction.
  • the filter valve hose is drawn under the suction against the casing tube, covering its suction slots, so that only the air is sucked out through the filter valve hose and the contents of the filling material are retained inside the bag. Dusting of the filling material during the filling process is definitely avoided in this way.
  • Suitable filter materials for the filter valve hose are all suitable materials with the required gas or air permeability with a corresponding particle retention capacity, such as filter paper in particular, such as is used for the production of vacuum cleaner filter bags.
  • the filter valve tube can also be designed as a half tube, the other tube half consisting of normal, air-impermeable material.
  • the filter valve half hose can be arranged either in the upper or in the lower valve half. The connection of the two material halves takes place essentially in a plane containing the longitudinal edges of the flat lying filter valve hose.
  • the filter effect can be further improved in that the filter valve hose has a microperforation extending at least over a partial area of the filter material outside of its connection areas with the bag bottom.
  • the filter valve hose can also be provided on its outside with a lining sleeve made of filter material in its area projecting into the sack interior.
  • the filter material of the feed sleeve can be made of the same material as the filter valve hose or of a different filter material, e.g. a suitable non-woven fabric.
  • a single-ply cross-bottom valve sack made of paper is shown, in its place a cross-bottom valve sack made of two or more layers of material can also occur.
  • material layers consisting entirely of paper
  • material layers comprising paper, e.g. paper laminated with plastic and / or metal foils as a barrier layer, or barrier layer intermediate layers made of metal, plastic foils and the like. Materials are used.
  • plastic films alone are also suitable as sack material.
  • the material sides or layers consisting of paper are preferably used, which allow the use of starch-based adhesives customary in paper sack production.
  • welding or heat sealing, including hot melt connections can take the place of adhesive bonds to connect the sack material in layers.
  • the bottom middle fold line is designated by 1, while the two bottom side fold lines at 2 and 3 are each illustrated by a dashed line.
  • the two bottom envelopes are labeled 4 and 5.
  • the valve-forming corner turn is shown, which bears the reference number 6.
  • the width measured transversely to the bottom center line 1 exceeds twice the bottom width of the finished cross bottom, as it results from the transverse dimension between the bottom side fold lines 2 and 3.
  • the material blank 7 is the starting workpiece of the filter valve hose 7 'to be formed in the course of the completion of the cross bottom (FIGS. 2 and 3) and has an envelope 8 which is folded over onto itself and with which it is applied to the by means of two parallel, strip-shaped adhesive applications 9 and 10 Corner 6 is glued on.
  • the envelope 8 forms an inner ring pocket of the filter valve hose 7 'which increases the filter area.
  • the inner edge 11 of the corner wrap 6 in the longitudinal direction, ie in the direction of the bottom center line 1, towered over the material blank 7 the inner edge 11 of the corner wrap 6, so that the finished filter valve hose 7 'has a hose region protruding into the sack interior.
  • an outer sealing sleeve 12 is incorporated, which is glued into the open cross bottom according to FIG. 1 with the aid of adhesive layers 13 and 14 on the flat material blank 7 in the area between the bottom side fold lines 2 and 3.
  • the width of the outer closure sleeve 12 corresponds essentially to the width of the finished cross base; it can also be smaller than the base width in adaptation to the valve channel diameter predetermined by the width of the filter valve hose 7.
  • the outer sealing sleeve 12 has an inner layer made of thermoplastic material, which can be converted from a normally non-adhesive state for a tight closure of the filling valve with the application of heat to an adhesive or sealable state.
  • the outer sealing sleeve 12 is glued to the corner wrap 6 with an outer protrusion 15 over the adjacent end edge 16 of the material blank 7 with the aid of an adhesive application 17, in which air passage channels 18 from the inside of the bag or the filter valve hose 7 'to the outside of the bag are left.
  • FIG. 1 which comprises an adhesive longitudinal application 19 running in the longitudinal direction of the base and a transverse adhesive application 20 running transversely thereto.
  • the adhesive applications 19 and 20, like the other adhesive applications, are symbolized by hatching in FIGS. 1 and 2 and by small circles in FIG.
  • the inner part of the valve hose 7 ' is therefore not freely movable, but is fixed on the bottom of the bag.
  • valve tube 7 also occupies a defined position in its inner region, and it is prevented that the inner part of the valve tube is pulled out when the bag is ejected due to any residual suction effect of the filler neck.
  • the adhesive layers 21 each have the shape of a triangle, the cathets of which border on the inner end edge 22 of the material blank 7 and on the adjacent bottom side fold line 2 or 3 in the region of the respective bottom side envelope 4 or 5.
  • the hypotenuses of the triangular adhesive layers 21 each face each other and converge towards the inner end edge 22 of the filter valve tube 7', as can be seen in particular in FIG. 2 can be seen.
  • a cross-sectional constriction 23 of the free valve channel is formed in the end region of the filter valve hose 7 'projecting into the sack, which, based on the flat state of the filter valve hose 7', as can be seen from FIG. 2, has the basic shape of a symmetrical trapezoid , which lies in the plane occupied by the longitudinal longitudinal fold lines 2, 3 of the filter valve hose 7 'and the shorter of the two parallel sides is essentially flush with the inner end edge 22 of the filter valve hose 7'.
  • the flat-lying filter valve hose 7' When the filter valve hose 7 'is pushed onto the filler neck of a filling device, the flat-lying filter valve hose 7' is expanded to a substantially cylindrical shape over the major part of its length, while in its inner end region the trapezoidal cross-sectional constriction 23 in the flat-lying state of the filter valve hose 7 'assumes a funnel-shaped shape and seals against the correspondingly tapered end of the filler neck with frictional engagement.
  • FIGS. 2 and 3 formed by folding the bottom side envelopes 4 and 5 inward, can have a bottom cover sheet (not shown) which is glued to the outside of the bottom side envelopes 4, 5 and which is dimensioned as long in the area of the valve-forming corner wrap 6 as the outer end is that it is essentially flush with the outer sleeve 12 completes.
  • air passage channels from the inside of the bag or the filter valve hose 7 'to the outside of the bag corresponding to the air passage channels 18 can again be left in the adhesive of the bottom cover sheet with the adjacent position of the outer sealing sleeve 12, in order to enable further venting of the filled bag after the filling process has ended.
  • the outer protrusion 15 with respect to the filter valve hose 7 ' also largely prevents the filter material from wicking, so that moisture absorption from the outside, even when the filled sack is stored over the filter material, is essentially ruled out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Basic Packing Technique (AREA)
  • Check Valves (AREA)
EP88118601A 1988-09-05 1988-11-09 Sac à valve à base croisée Expired - Lifetime EP0357835B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88118601T ATE88965T1 (de) 1988-09-05 1988-11-09 Kreuz- oder klotzbodenventilsack.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8811184U DE8811184U1 (de) 1988-09-05 1988-09-05 Kreuz- oder Klotzbodenventilsack
DE8811184U 1988-09-05

Publications (3)

Publication Number Publication Date
EP0357835A2 true EP0357835A2 (fr) 1990-03-14
EP0357835A3 EP0357835A3 (en) 1990-10-24
EP0357835B1 EP0357835B1 (fr) 1993-05-05

Family

ID=6827565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118601A Expired - Lifetime EP0357835B1 (fr) 1988-09-05 1988-11-09 Sac à valve à base croisée

Country Status (6)

Country Link
US (1) US4930904A (fr)
EP (1) EP0357835B1 (fr)
AT (1) ATE88965T1 (fr)
BE (1) BE1000482A6 (fr)
CA (1) CA1323615C (fr)
DE (2) DE8811184U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102328774A (zh) * 2010-07-15 2012-01-25 王子颖 一种含热塑性塑料的方底阀口包装袋及其制作方法

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9101210U1 (de) * 1991-02-02 1991-04-25 Bischof Und Klein Gmbh & Co, 4540 Lengerich Kreuz- oder Klotzbodenventilsack
US6013018A (en) * 1996-09-05 2000-01-11 Bemis Company, Inc. Sonic valve closure assembly for valve bags
US5846360A (en) * 1997-01-09 1998-12-08 Gil; George Filter and method and apparatus for manufacture thereof
US6164823A (en) * 1998-12-07 2000-12-26 Southern Bag Corporation, Ltd. Valve bag and method for making a valve bag
US7886412B2 (en) 2007-03-16 2011-02-15 S.C. Johnson Home Storage, Inc. Pouch and airtight resealable closure mechanism therefor
US7784160B2 (en) 2007-03-16 2010-08-31 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US7946766B2 (en) 2007-06-15 2011-05-24 S.C. Johnson & Son, Inc. Offset closure mechanism for a reclosable pouch
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
US7857515B2 (en) 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
US7887238B2 (en) 2007-06-15 2011-02-15 S.C. Johnson Home Storage, Inc. Flow channels for a pouch
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
HUP0900669A2 (en) 2009-10-26 2010-07-28 Zoltan Mandzsu Plastic packing bag with overpressure relief, packing method and system
AT512806B1 (de) * 2012-04-23 2014-01-15 Bsw Machinery Handels Gmbh Gewebe für die Herstellung von Säcken
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
DE202015006392U1 (de) * 2015-09-11 2016-12-13 Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh Ventilsack
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

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US2105376A (en) * 1936-12-18 1938-01-11 Chase Bag Company Valve bag
FR959062A (fr) * 1942-07-20 1950-03-23
DE906888C (de) * 1944-08-07 1954-03-18 St Regis Paper Co Durch Waerme verschliessbarer Ventilsack
US2799314A (en) * 1951-09-07 1957-07-16 Dreyer Andre Leak-proof containers for liquids
DE963745C (de) * 1953-02-01 1957-05-09 Herkules Papiersackfabriken Br Verfahren und Vorrichtung zum Herstellen von Papiersaecken mit Kreuzboeden
DE1085027B (de) * 1958-04-16 1960-07-07 Bischof & Klein Papierverarbei Ventilsack aus Papier oder aus einem aehnlichen Werkstoff
DE1115118B (de) * 1960-07-27 1961-10-12 Osthushenrich Kg Verfahren zum Herstellen von konischen Ventileinsaetzen fuer Saecke oder Beutel aus Papier od. dgl. und nach dem Verfahren hergestellte Ventileinsaetze
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102328774A (zh) * 2010-07-15 2012-01-25 王子颖 一种含热塑性塑料的方底阀口包装袋及其制作方法

Also Published As

Publication number Publication date
EP0357835A3 (en) 1990-10-24
ATE88965T1 (de) 1993-05-15
DE3880833D1 (de) 1993-06-09
DE8811184U1 (de) 1988-11-10
US4930904A (en) 1990-06-05
EP0357835B1 (fr) 1993-05-05
CA1323615C (fr) 1993-10-26
BE1000482A6 (fr) 1988-12-20

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