US2620121A - Device for closing and sealing of valves in valve bags - Google Patents

Device for closing and sealing of valves in valve bags Download PDF

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Publication number
US2620121A
US2620121A US5805A US580548A US2620121A US 2620121 A US2620121 A US 2620121A US 5805 A US5805 A US 5805A US 580548 A US580548 A US 580548A US 2620121 A US2620121 A US 2620121A
Authority
US
United States
Prior art keywords
sleeve
valve
bag
closing
strip
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.)
Expired - Lifetime
Application number
US5805A
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English (en)
Inventor
Johnsson John
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.)
Billeruds AB
Original Assignee
Billeruds AB
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 Billeruds AB filed Critical Billeruds AB
Application granted granted Critical
Publication of US2620121A publication Critical patent/US2620121A/en
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/18—Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/12—Subdividing filled tubes to form two or more packages by sealing or securing involving displacement of contents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S383/00—Flexible bags
    • Y10S383/905—Dead fold, ductile, closure element

Definitions

  • the present invention relates to valve bags constructed of a multi-ply tube of paper or the like, which is closed at both ends except for a filling valve in one bag corner formed by folding in said corner.
  • the invention relates to valve bags having a sleeve or tube of paper or the like fixed in the valve, through which sleeve or tube the bag is filled.
  • the invention concerns a method and a device for closing and sealing this sleeve or tube after filling of the bag in order that none of the contents of the filled bag may leak out or be taken out through the valve opening without damaging the seal and closure. Any such damage being easily discovered. It is known from Swedish patent specification No. 78,730, after filling of the bag through the sleeve extending outside the valve, to close said outer end of the sleeve by sewing, gluing or stitching in order to prevent leakage of the bag contents or removing part thereof through the valve opening.
  • the principal object of the invention is therefore to provide a method and a device for enabling a more rapid and safer closing of the outer end of the sleeve or tube, so that the closing may be effected immediately after taking the bags off of the filling machine without any loss of time or any extra workers being needed at the filling machine or without the risk of the closing device or parts thereof being lost, or becoming loosened and falling down into the bag contents.
  • the invention contributes the important advantage that the closure effected also serves as a seal and has such mechanical strength and occupies such a Well-protected position, that it will not be exposed to unintentional damage during the handling of the bags.
  • the seal is difficult to reach for unauthorized damaging and opening and presents a difiicult problem for one to imperceptibly take out some of the bag contents through the valve opening. The last-mentioned fact is of very great importance,
  • the sleeve or tube fixed in the valve opening extend with its outer end a good distance outside the valve and to arrange in the underneath side of the valve sleeve a stiffening insert of a flexible material which extends in the longitudinal direction of the valve sleeve and has the form of thin sheet metal strips or the like which, after folding of the extending outer porticn of the sleeve into contact with the upper side of the upper wall of the valve (said wall being formed by the upper end wall of the bag which is most often cross-folded), maintain the folded portion in this closing position.
  • the folded portion of the sleeve is thereby considerably exposed and very easily attainable, sothat it may easily be displaced or damaged on handling the bags and may easily be folded back to enable removing part of the bag contents through the valve without being easily discovered and serve as evidence that the valve has been opened illegitimately. It has also been proposed to let the inner end of the valve sleeve extend a good distance past the valve into the bag and to arrange in the upper side of the sleeve such flexible thin sheet metal strips or the like, which after folding of the inner portion of the sleeve into contact with the underneath side of the lower wall of the valve, maintain the folded portion in this closing position. The folded portion will thereby lie protected within the bag but the folding will be rather difficult to effect, besides which it cannot serve as a seal or closure from which it is possible to determine, from outside, whether the valve closure has been opened illegitimately.
  • Fig, 1 is a longitudinal section of a sleeve or tube adapted to be fixed by gluing in the valve of a valve bag, which sleeve or tube is provided with a closing means according to the invention.
  • Fig. 2 is a perspective view of the sleeve, parts of said sleeve being omitted for the sake of clearness.
  • Figs. 3 and 4 are plan views of the valve corner of the bag with the sleeve fixed in the valvebe- I .front edge of the sleeve. erably be approximately as long asthe'sleeve l metres.
  • Figs. 7 and 8 are views similar to Figs. 3 and 4, and show a modification of the closing means according to the invention
  • Fig. 9 shows a further embodiment oftheclosing means in section through the 'valve corner of the bag before closing of the valve.
  • the sleeve I may preferably consist of a single-ply paper tube which in flattened condition has a width corresponding to the inner Width of the valve formed in the bag corner in its normal flattened condition.
  • the width of the strip 2 is preferably considerably smaller than :its length, since the width, that is, theextent in 'the lehgitudinal direction o'fthe sleeve B, does not need to be and should not amount to more than one or two, or a small number of centi-
  • the sheet metal strip 2 is adapted to 'be folded about its longitudinal center line runrung parallel with the front edge of the sleeve l I 'otherwi'se about a line situatedat a distance .from 'the longitudinal edge of the strip, running along "the from edge of the sleeve and parallel 'with'said longitudinaledge, along which line the stripTis'provided with a perforation 3 or the like facilitating the folding operation.
  • the strip 2 is pre'ferably fixed in position by means of a covering sheet lfof paper arranged on the same andIglued the upper side of the sleeve and preferablyifolded'in front about the front edge of the'sleeve.
  • the sleeve I provided with the strip 2,.lis glued into the valve in the valve cor- .ne'r a positiona's appears from Fig. 3, so that the frohtuedgeof the sleeve only extends a relaltivelyfsmall distance outside the front edge of the upper side of the valve.
  • the sleeve 1 can .pr'ef'erablybe arranged in such a way that the folding line 3 more --or less coincides with the front edge of the upper wall of the valve.
  • the lotVerWall of the sleeve l is not-glued to the lower wall 'of the'v'alve entirely up to thefront edge of ':the sleeve, since .after'filling of the bag, the closing operation is effected-in 'such a'manner that .theff'ro'ntjend vIpertio'n of the sleeve 1, provided with theIstrip-2, is doubled by folding the por- 'tionsituated outside the folding line 3 of the strip2.
  • the doubled sheet metal strip 2 and the parts of the sleeve 1 surrounding said strip are compressed between the tong jaws to a Wave form or the like withridges and grooves running at right angles to the longitudinal direction of the strip, which is shown in Figs. 4 and 6.
  • the thickness and material combination of the sheet metal strip 2 are so dimensioned that this operation does not demand any great force. Owing-to the pressing of the doubled strip 2, it will'be' practically impossible to open or separate the strip by hand and then again completely compress the two-halves of the seal obtained in tnis'manne'r.
  • the seal cannot be broken without damaging it, or the paper of the sleeve l enclosed-in the same, in such a way that irremovable traces are left which are easily discovered and serve as evidence of the damage.
  • the closure serving at the same time as a seal, occupies an extremely well-protected position in which it is difiicult to get at for manipula. tions attempting to imperceptibly remove part or the bag contents through the valve opening.
  • This combined closure and seal thus provides a very gOOd protection against attempted thefts of the contents of the bags during transport, storage, etc. and makes it possible to prove a possible illegitimate manipulation of the closure, which is of very great importance when rationed articles are concerned.
  • the sheet metal strip -2 is provided in one half, adjacent the front edge of the sleeve I, with a triangular recess Eand, in the other half, with a stamped-out triangular tongue fi which, on'fold ing of the sheet metal strip about the folding line 3, will be situated opposite the recess 5.
  • the tongue '6 situated on theupper side of the valve sleeve is pressed down through the intermediate paper layers and through the recessi and isfolded about the basis edge of the same to the position shown in Fig.
  • the pair of sealing tongs By providing the pair of sealing tongs with cutting edges, it is possible, so faras the sheet metal strip 2 ischosen of 'a'suitable material and of a suitable thickness, to make the recess 5 and the tongue Sdirectly by means of the pair of tongs, so that the sheet metal strip 2 does not need to be provided with the recessand the tongue beforehand.
  • the tongue may naturally be varied as toform and as to the number used in various Ways.
  • the sheet metal strip 2 is initially bent in'an angle about its longitudinal center line extending at right angles'to the longitudinal direction of the sleeve I, so that the anglecorner 3a forms'a folding line for the complete doubling occurring in the closing operation.
  • the dOubling is thus facilitated, so that even if the Width of the strip 2'is very small this operation may easily be effected directly with the fingers.
  • the sheet metal strip 2 is preferably so fixed by means of the covering sheet 4 of paper or the like enclosing the same that the sheet hingedly connects the sheet metal strip with the upper wall of the valve and the sleeve, respectively, at the longitudinal back edge of the sheet metal strip.
  • a valve bag comprising a sleeve secured in the valve and having an outer end portion projecting only a short distance outside the valve cpening, a foldable metal strip of a relatively small width as compared with the length of said strip and of a length approximately equal to the width of said sleeve when this is in normal flattened condition, the width of said strip being adapted to fold along the median longitudinal line thereof and the folded edge thereby forming an outer edge, said strip being embedded in and secured to the top Wall of said sleeve adjacent the outer end thereof and extending transversely of said sleeve, said strip being adapted to be longitudinally folded substantially along the median longitudinal line thereof whereby the outer half of the strip being folded downwardly and inwardly against the inner half of the strip folds the projecting outer end of the sleeve and clamps said end in folded position between the two halves of the strip by the doubling thereof.
  • the metal strip is of angle cross section, the angle corner forming the folding line for the doubling of the strip.
  • valve bag as claimed in claim 1 and including perforations along the median longitudinal fold line for faciliting the folding over of said strip.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packaging Of Special Articles (AREA)
US5805A 1944-03-07 1948-02-02 Device for closing and sealing of valves in valve bags Expired - Lifetime US2620121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE627950X 1944-03-07

Publications (1)

Publication Number Publication Date
US2620121A true US2620121A (en) 1952-12-02

Family

ID=20313433

Family Applications (1)

Application Number Title Priority Date Filing Date
US5805A Expired - Lifetime US2620121A (en) 1944-03-07 1948-02-02 Device for closing and sealing of valves in valve bags

Country Status (4)

Country Link
US (1) US2620121A (en(2012))
FR (1) FR1002989A (en(2012))
GB (1) GB627950A (en(2012))
NL (1) NL70534C (en(2012))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740577A (en) * 1953-03-26 1956-04-03 Bemis Bro Bag Co Bag
US3081930A (en) * 1957-10-17 1963-03-19 Paper Sacks Ltd Bag opening device
US3162354A (en) * 1963-01-16 1964-12-22 Geigy Chem Corp Valve bag closure means
US6471403B1 (en) * 1996-11-04 2002-10-29 Frantschach Industrial Packaging Netherlands Nv Valve bag
US20110038568A1 (en) * 2009-08-14 2011-02-17 Bioway Organic Inc. Seal-free pouch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745594A (en) * 1955-03-22 1956-05-15 Universal Paper Bag Co Valve bag

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU993527A (en) * 1927-10-18 1928-10-23 Bates (australasia ) Limited Improvements in closures for valved paper bags anda tool for fixing the closure
US1782738A (en) * 1926-09-03 1930-11-25 St Regis Paper Co Valve bag
US1993377A (en) * 1933-08-07 1935-03-05 Marblehead Lime Company Bag closure valve
US2147970A (en) * 1936-01-22 1939-02-21 Bois Alfred Du Closing of valve bags
US2221854A (en) * 1935-10-19 1940-11-19 Zalkind Philip Predetermined bend line
US2444891A (en) * 1941-04-28 1948-07-06 Billeruds Ab Bag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1782738A (en) * 1926-09-03 1930-11-25 St Regis Paper Co Valve bag
AU993527A (en) * 1927-10-18 1928-10-23 Bates (australasia ) Limited Improvements in closures for valved paper bags anda tool for fixing the closure
US1993377A (en) * 1933-08-07 1935-03-05 Marblehead Lime Company Bag closure valve
US2221854A (en) * 1935-10-19 1940-11-19 Zalkind Philip Predetermined bend line
US2147970A (en) * 1936-01-22 1939-02-21 Bois Alfred Du Closing of valve bags
US2444891A (en) * 1941-04-28 1948-07-06 Billeruds Ab Bag

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740577A (en) * 1953-03-26 1956-04-03 Bemis Bro Bag Co Bag
US3081930A (en) * 1957-10-17 1963-03-19 Paper Sacks Ltd Bag opening device
US3162354A (en) * 1963-01-16 1964-12-22 Geigy Chem Corp Valve bag closure means
US6471403B1 (en) * 1996-11-04 2002-10-29 Frantschach Industrial Packaging Netherlands Nv Valve bag
US20110038568A1 (en) * 2009-08-14 2011-02-17 Bioway Organic Inc. Seal-free pouch

Also Published As

Publication number Publication date
GB627950A (en) 1949-08-18
NL70534C (en(2012))
FR1002989A (fr) 1952-03-12

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