WO1985005341A1 - Valve bags and installation and process for closing valve bags - Google Patents
Valve bags and installation and process for closing valve bags Download PDFInfo
- Publication number
- WO1985005341A1 WO1985005341A1 PCT/EP1985/000215 EP8500215W WO8505341A1 WO 1985005341 A1 WO1985005341 A1 WO 1985005341A1 EP 8500215 W EP8500215 W EP 8500215W WO 8505341 A1 WO8505341 A1 WO 8505341A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- adhesive
- bag
- valve bag
- roller
- Prior art date
Links
Classifications
-
- 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
- B65B7/00—Closing containers or receptacles after filling
- B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks
- B65B7/025—Closing valve 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
- B65D31/14—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
- Valve bags and system and method for closing valve bags are Valve bags and system and method for closing valve bags
- the invention relates to a system according to the preamble of claim 1, a valve bag according to the preamble of claim 16 and a method according to the preamble of claim 18.
- valve sacks according to the invention are particularly advantageous, which can consist of paper or polyethylene and have a bottom valve that is surmounted by a cover sheet led out below or has an outer, shorter flap, of which an inner, protrudes longer tab.
- the centerpiece of the system according to the invention is a closing station in which the laterally protruding part of the outer valve is first folded up when the filled sack comes in, whereupon an adhesive zone of the sack bottom is provided with at least one glue trace and the outer valve and the protruding part are pressed onto it. The whole thing takes place automatically in a controllable cycle.
- the closing station has a preferably vertically movable adhesive application device and a pressing device.
- an elastic roller or natural brush is movable transversely to a driven conveyor, on which the filled sacks are positioned and brought up and are conveyed away after the valve has been closed.
- a preferably pneumatic drive with electrical or electronic control effects the individual work cycles through the organs mentioned.
- a sensor for example in the form of a pair of lever rollers, a wiper contact or the like. controls the movement of the glue application device.
- a heating device for a hot-melt adhesive can be connected to this line if a cold adhesive is not used.
- Leveling rollers, possibly sliding elements and lateral guides, which can be adjustable individually or in groups or as a guide belt, are important for positioning the supplied bags.
- FIG. 1 is a plan view of an empty, flat-lying valve bag according to the invention.
- FIG. 2a shows schematic top views of the outer valve to 2b arrangement of the valve bag according to FIG. 1 in different process stages
- FIG. 3 is a schematic plan view of a plant according to the invention.
- FIG. 4a is a schematic side view of a locking station in the system of FIG. 3,
- FIG. 4b is an end view of the closing station of Fig. 4a and Fig. 3,
- FIG. 5 is a schematic oblique view of another embodiment of a system according to the invention, 6a each a schematic side view of a valve bag, and 6b which actuates control rollers when entering the closing station, and
- Fig. 6c is a schematic plan view of part of a closing station with a valve bag.
- the valve bag 10 shown schematically in part in FIG. 1 has an outer valve 14 on one side on the bag bottom 12. Below this, a cover sheet 15 is led out laterally, which preferably extends to the side edge 20 of the folded, empty valve bag 10. Optionally or additionally, a shorter, outer tab 16 and an inner, longer tab 18 can be provided on the outer valve 14. If the sack 10 is filled, the side edge 20 disappears in the fold plane 22, which then also laterally delimits the bottom 12. Following the folding plane, the base 12 according to the invention has an adhesive zone 24.
- FIGS. 2a to 2d The method according to the invention for closing the external valve 14 is schematically illustrated in FIGS. 2a to 2d.
- the filled valve bag 10, which enters a closing station 40 (FIG. 3), is delimited laterally by the folding plane 22 and at the end by the bottom 12, the outer valve 14 projecting laterally (FIG. 2a).
- the outer valve 40 including the overhang (15 or 18) is folded up (FIG. 2b).
- at least one adhesive track 26 is applied to the adhesive zone 24 (FIG. 2c).
- the external valve 14 is completely folded over by a pressure device (46, FIGS. 3 and 4a) and pressed together with its overhang (15 or 18) against the bag bottom 12 (FIG. 2d).
- the invention provides a system which is shown schematically in FIG. 3 and is designated 30 overall. It has a driven conveyor 32 or the like, a conveyor belt, a roller conveyor. can be and a laterally arranged feed device 34 for filled valve sack has. For the sake of clarity, these, like a supporting frame, typical fastening means, bearings and the like, are not shown.
- Lateral guides 36, 36 'and at least one leveling roller 38 which is attached at an adjustable height above the conveyor 32 parallel to its plane, serve to position the valve sacks reaching the conveyor in the feed direction Z and conveying them lying thereon in the conveying direction F to the closing station 40 will.
- a drain flap 60 which, when swiveled down, serves as a stop for the valve bag which has run in and brings it to a standstill (FIG. 4b).
- the closing station 40 has an adhesive application head 42, to which a sensor in the form of a wiper contact 52 is assigned. If a hot melt adhesive is used, a schematically indicated line leads from a heating device 44 the adhesive to the application head 42. This has at least one nozzle arranged in the conveying direction of the conveyor 32 in order to apply the adhesive track 26 on the adhesive zone 24 of the bag bottom 12 in addition to that in Running in to cause edged external valve 14.
- the closing station 40 contains guide means on both sides, for example rollers 54, which can each be freely rotatably mounted in a (schematically indicated) frame. At least one group of the lateral guide rollers 54, as illustrated in FIG. 3 below, can be moved laterally in the direction of the arrow by means of, for example, a pneumatically actuated actuating device 58 in order to achieve the best possible adaptation to the format of the filled valve bags.
- Their inlet is supported by a preferably pivotable sliding plate 56, which is arranged upstream of the closing station 40 and at the same time causes or facilitates the positioning of each individual valve sack during the inlet under lateral guidance.
- the adhesive application device (which is shown in a middle position in FIG. 4 a) moves under the control of the wiper contact 52 from top to bottom along the sack bottom, expediently two adhesive traces 26 are applied in the adhesive zone 24. It is also possible and provided according to the invention to use a coiled or zigzag-shaped adhesive track 26 with a larger width of e.g. Apply 2 to 10 cm. As soon as the adhesive application device 42 has started up again, the pressure roller or brush 46 is pushed out of the row of lateral guide rollers 54, the outer valve 14 including the projection 16 and 18 being pressed against the bag bottom 12.
- FIG. 5 A modified system design is shown in FIG. 5, with the omission of lateral boundaries, holding and switching elements, lines, etc., in order to make essential assemblies clear in a diagonal view.
- This system 30 has a frame R which carries a conveyor belt 32 with a drive roller 33, which is preferably constantly running during operation.
- Partial side guides 36, 36 ' are arranged in the form of vertical plates.
- the guide plate 36 ' can be displaced transversely to the conveying direction F by means of an adjusting device 58, the incoming valve bag being moved towards the opposite guide plate 36 and at the same time being aligned and brought into a box shape;
- a swivel flap 82 then briefly strikes the floor 12 with the valve 14 to be closed, for example under the action of a photoelectrically controlled pressure cylinder 84, in order to even out the initially not even floor surface at least in the adhesive zone 24 and essentially perpendicular to the level of the conveyor 32 align.
- the actual closing station 40 in turn has an adhesive application head 42 (only indicated here) and a hot-melt device 44.
- the actuation of the application head 42 arranged on a first control roller 62 is effected via a sensing device.
- This has an angle lever 66 which carries the first control roller 62 and is connected to the piston rod of a lifting cylinder 68.
- a second control roller 64 is attached to a lever 70.
- a (not shown) curve segment on the lever 70 serves to couple the sequence of movements of the second control roller 64 with the angle lever 66 of the first control roller 62. This is initially higher than the top of the incoming valve bag 10, which pushes the second control roller 64 away in the conveying direction F. As a result, the first control roller 62 is unlocked.
- Both rollers 62, 64 now run over the top of the valve bag 10. This is conveyed further and the first control roller 62 engages on the bag bottom 12, a switch (not shown) being actuated for the start of the adhesive application. As soon as the first control roller 62 on the sack bottom 12 has reached the conveyor 32 (FIG. 6b), the adhesive application device 42 is switched off. It can be seen that there is also the possibility, by the distance of the control rollers 62, 64 from one another, for a given running speed of the conveyor 32, to define a period of time which can be used for controlling the adhesive application process. A similar control is provided for pressing the glued valve overhang.
- the pressure brush 46 is constantly driven by a motor 76 and, like this, is seated on a spring-loaded lever 80 which can be pivoted about a pivot bearing 74.
- Another pivot bearing 72 carries a lever roller 78 which is pushed aside by the incoming valve bag.
- the movement of the lever 80 is released so that the pressure brush 46 rolls on the sack 10 which is required along.
- the rotating brush 46 engages on the bag bottom 12.
- a switch (not shown) is actuated, whereby a pressure cylinder 48 briefly loads the pressure brush 46 in the conveying direction F.
- the adhesive is already set while the closed valve bag 10 is being conveyed.
- a pulse generator can be provided for the movement of the adhesive application device 42 and for the spraying out of the adhesive.
- the state of the adhesive and / or the working position (s) of the adhesive application device 42 can be monitored by means of a control device (not shown).
- the bag bottom 12 in the adhesive zone 24 can be provided with a dry adhesive layer and to apply the adhesive or glue agent of the device 26 by heat-setting pressure, e.g. to be replaced with a pressure roller. It is also possible to apply a two-component adhesive with a short curing time to the gluing point if it is important to effect the setting particularly quickly and safely. If a roller is used as the pressing device 46, an elastic support is e.g. made of foam rubber; otherwise a driven rotary brush with natural bristles is preferred.
- nozzles with a plug are suitable which are inserted into the valve 14 and spread apart therein.
- a little overhang preferred on the outer valve 14 because this makes handling easier.
- the outer valve 14 can be extended inwards, ie combined with an inner valve, so to speak.
- the system 30 can be combined with any type of filling system, the valve bags 10 being fed with the valve 14 arranged at the rear, as seen in the direction of conveyance F.
- the system 30 can therefore also be integrated into any existing filling system with vertical discharge of the valve bags 10 to be supplied.
- contactless and / or electronic control means can also be used, e.g. Photocells, optocouplers and the like
- pure timers can be used for the time sequences, which cause switching operations in a programmed sequence.
- the program can be entered by a microprocessor and changed if necessary.
- the controller 50 (FIG. 3) or in the control box S (FIG. 5) there are adjustable clock generators for the pneumatic drives 48, 48 '68, 84.
- the time requirement of, for example, 2 s in the closing station 40 specifies in the exemplary embodiment in FIG. 3 the cycle in which the valve bags 10 are fed in, closed and transported away.
- the valve bags 10 on the continuously driven conveyor 32 also run continuously in the closing station 40 without being stopped.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Package Closures (AREA)
- Bag Frames (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Closing Of Containers (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Mechanically-Actuated Valves (AREA)
- Fertilizing (AREA)
- Catching Or Destruction (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85902515T ATE32586T1 (de) | 1984-05-10 | 1985-05-09 | Anlage und verfahren zum verschliessen von ventilsaecken. |
DE8585902515T DE3561645D1 (en) | 1984-05-10 | 1985-05-09 | Installation and process for closing valve bags |
FI854758A FI78270C (fi) | 1984-05-10 | 1985-12-02 | Anordning och foerfarande foer tillslutning av ventilsaeckar foersedda med bottenventil. |
DK596685A DK596685D0 (da) | 1984-05-10 | 1985-12-20 | Anlaeg og fremgangsmaade til lukning af ventilsaekke |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84105278.0(EP) | 1984-05-10 | ||
EP84105278A EP0160725A1 (de) | 1984-05-10 | 1984-05-10 | Ventilsäcke sowie Anlage und Verfahren zum Verschliessen von Ventilsäcken |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1985005341A1 true WO1985005341A1 (en) | 1985-12-05 |
Family
ID=8191934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1985/000215 WO1985005341A1 (en) | 1984-05-10 | 1985-05-09 | Valve bags and installation and process for closing valve bags |
Country Status (8)
Country | Link |
---|---|
EP (2) | EP0160725A1 (de) |
AT (1) | ATE32586T1 (de) |
AU (1) | AU4401085A (de) |
DE (1) | DE3561645D1 (de) |
DK (1) | DK596685D0 (de) |
FI (1) | FI78270C (de) |
NO (1) | NO853792L (de) |
WO (1) | WO1985005341A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8805854U1 (de) * | 1988-05-03 | 1988-06-16 | Teutrine, Annemarie, 4740 Oelde | Vorrichtung zum Verschließen eines Ventilsacks |
WO2002087977A2 (en) * | 2001-05-02 | 2002-11-07 | Hood Packaging Corporation | Sealable valve bag and manufacturing method therefor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE928930C (de) * | 1949-06-27 | 1955-06-13 | Richard Mundhenke | Als Kreuzbodenventilsack ausgebildeter Warenbeutel fuer Haushaltspackungen |
DE1194313B (de) * | 1957-09-10 | 1965-06-03 | Continental Oil Co | Selbsttaetige Beleim- und Verschliessvorrichtung fuer Ventilsaecke |
DE1903992A1 (de) * | 1968-02-09 | 1970-01-08 | Billeruds Ab | Vorrichtung zum Verschliessen von Ventilsaecken |
DE2548091A1 (de) * | 1974-10-30 | 1976-05-06 | Wavin Bv | Verfahren zum herstellen von kunststoff-saecken |
DE2640828A1 (de) * | 1975-10-01 | 1977-04-07 | Emhart Ind | Vorrichtung zum auftragen von klebstoff |
FR2442186A1 (fr) * | 1978-11-27 | 1980-06-20 | Ocme | Dispositif de collage d'un rabat de boites de carton, sur une face frontale de celles-ci pendant leur transport continu |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
UST941002I4 (en) * | 1974-06-28 | 1975-12-02 | Apparatus for automatically sealing valve bags |
-
1984
- 1984-05-10 EP EP84105278A patent/EP0160725A1/de not_active Withdrawn
-
1985
- 1985-05-09 AU AU44010/85A patent/AU4401085A/en not_active Abandoned
- 1985-05-09 AT AT85902515T patent/ATE32586T1/de active
- 1985-05-09 EP EP85902515A patent/EP0182832B1/de not_active Expired
- 1985-05-09 WO PCT/EP1985/000215 patent/WO1985005341A1/de active IP Right Grant
- 1985-05-09 DE DE8585902515T patent/DE3561645D1/de not_active Expired
- 1985-09-26 NO NO853792A patent/NO853792L/no unknown
- 1985-12-02 FI FI854758A patent/FI78270C/fi not_active IP Right Cessation
- 1985-12-20 DK DK596685A patent/DK596685D0/da not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE928930C (de) * | 1949-06-27 | 1955-06-13 | Richard Mundhenke | Als Kreuzbodenventilsack ausgebildeter Warenbeutel fuer Haushaltspackungen |
DE1194313B (de) * | 1957-09-10 | 1965-06-03 | Continental Oil Co | Selbsttaetige Beleim- und Verschliessvorrichtung fuer Ventilsaecke |
DE1903992A1 (de) * | 1968-02-09 | 1970-01-08 | Billeruds Ab | Vorrichtung zum Verschliessen von Ventilsaecken |
DE2548091A1 (de) * | 1974-10-30 | 1976-05-06 | Wavin Bv | Verfahren zum herstellen von kunststoff-saecken |
DE2640828A1 (de) * | 1975-10-01 | 1977-04-07 | Emhart Ind | Vorrichtung zum auftragen von klebstoff |
FR2442186A1 (fr) * | 1978-11-27 | 1980-06-20 | Ocme | Dispositif de collage d'un rabat de boites de carton, sur une face frontale de celles-ci pendant leur transport continu |
Also Published As
Publication number | Publication date |
---|---|
EP0182832B1 (de) | 1988-02-24 |
FI854758A (fi) | 1985-12-02 |
FI854758A0 (fi) | 1985-12-02 |
EP0160725A1 (de) | 1985-11-13 |
ATE32586T1 (de) | 1988-03-15 |
EP0182832A1 (de) | 1986-06-04 |
FI78270C (fi) | 1989-07-10 |
NO853792L (no) | 1985-12-05 |
DK596685A (da) | 1985-12-20 |
AU4401085A (en) | 1985-12-13 |
FI78270B (fi) | 1989-03-31 |
DK596685D0 (da) | 1985-12-20 |
DE3561645D1 (en) | 1988-03-31 |
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