CN107856969B - Device and method for producing a bag package - Google Patents

Device and method for producing a bag package Download PDF

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Publication number
CN107856969B
CN107856969B CN201710866540.1A CN201710866540A CN107856969B CN 107856969 B CN107856969 B CN 107856969B CN 201710866540 A CN201710866540 A CN 201710866540A CN 107856969 B CN107856969 B CN 107856969B
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CN
China
Prior art keywords
glue
packaging material
web
sealing unit
bag package
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
CN201710866540.1A
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Chinese (zh)
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CN107856969A (en
Inventor
C·埃特魏因
E·赖克曼
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.)
Xingdeke Technology Co.,Ltd.
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Xingdeke Technology Co ltd
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Publication date
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Publication of CN107856969A publication Critical patent/CN107856969A/en
Application granted granted Critical
Publication of CN107856969B publication Critical patent/CN107856969B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/74Auxiliary operations
    • B31B70/81Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/84Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
    • B31B70/844Applying rigid valves, spouts, or filling tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D31/00Bags or like containers made of paper and having structural provision for thickness of contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02Means for manipulating or holding work, e.g. for separate articles for particular articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/001Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
    • B05C5/0275Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve
    • B05C5/0279Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve independently, e.g. individually, flow controlled
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/60Uniting opposed surfaces or edges; Taping
    • B31B70/62Uniting opposed surfaces or edges; Taping by adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/60Uniting opposed surfaces or edges; Taping
    • B31B70/62Uniting opposed surfaces or edges; Taping by adhesives
    • B31B70/628Applying glue on moving webs to form tubular webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00Packaging 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
    • B65B1/02Machines characterised by the incorporation of means for making the containers or receptacles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/02Applying adhesives or sealing liquids
    • B65B51/023Applying adhesives or sealing liquids using applicator nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/186Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating rigid fittings, e.g. discharge spouts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing 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
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861Spouts
    • B65D75/5872Non-integral spouts
    • B65D75/5877Non-integral spouts connected to a planar surface of the package wall
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254Coating heads with slot-shaped outlet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/60Uniting opposed surfaces or edges; Taping
    • B31B70/62Uniting opposed surfaces or edges; Taping by adhesives
    • B31B70/626Arrangements for permitting the glue to set

Abstract

The invention relates to a device (10) and a method for producing a bag package (1) from a web (20) of packaging material, the device comprises at least one forming device (13, 106) for forming the bag package (1) from the packaging material web (20), at least one sealing device (45, 60, 74) for forming at least one longitudinal and/or transverse seam (5) of the bag package (1), at least one glue application station (9) is provided, by means of which a glue coating (82) can be applied to a web (20) of packaging material made of paper for fixing at least one pouring portion (78) on the bag package (1), and at least one sealing unit (86) is provided for reactivating, in particular liquefying, the glue coating (82) for fixing the pouring portion (78) on the bag package (1).

Description

Device and method for producing a bag package
Technical Field
The invention relates to a device and a method for producing a bag package.
Background
DE 102013225051 a1 discloses a device for applying an adhesive layer with a coating pattern to a continuous web of packaging material and a corresponding use of the device. The application device is arranged transversely to the conveying direction of the packaging material web and has adhesive nozzles which can be individually actuated. The device is particularly intended for a tubular bag machine.
DE 102013216206 a1 discloses a device for producing bag packs from a web of sealable packaging material, in particular a heat-sealable material in the form of a sealable plastic film, by means of a transport wheel rotating in steps about an axis, which has a plurality of holding devices adapted to the cross section of the bag packs for the packaging material blanks resting on the holding devices. The first sealing device is used to form a longitudinal sealing seam of the bag package in the overlapping edge regions of the web of packaging material.
Disclosure of Invention
The object of the invention is to provide a durable package which can be easily emptied. This object is achieved by the features of the invention.
The device of the invention and the method of the invention have the advantage that, in particular, dust-and insect-proof paper bags can be manufactured while retaining the advantages of reclosable packages. This offers the possibility of easily emptying or reclosable packages with ecological packaging material paper providing high product safety (e.g. protection against insects, less possibility of counterfeiting of the packaged product) in case of high output of some foods, such as flour, sugar, oatmeal, etc. Whereby the film wrapping can be eliminated.
These advantages are achieved according to the invention in that a dust-and insect-proof and easily emptied or reclosed paper bag can be produced accordingly by gluing the longitudinal and/or transverse seams and the portions for fixing the spout. Only partial sizing is a more resource-friendly alternative to film packaging, since only small amounts of mineral oil-based materials have to be used. Paper is made from recycled raw materials and is known and accepted by consumers of these products. The packaging plant can be operated with only one single adhesive or glue. Thereby, for example, cold glue can be dispensed with. The corresponding logistics, warehouse management and cleaning operations thus also eliminate the cold glue normally used to produce the longitudinal or bottom seams. Sealing with an adhesive or glue can seal not only the bottom, the longitudinal seams, but also the head of the package in a dust-tight manner. For sealing or activating the glue or adhesive, the usual sealing tools from the film industry can be used with possible corresponding modifications.
To this end, according to the invention, at least one glue application station is provided, by means of which a glue coating can be applied to the web of packaging material consisting of paper for fixing at least one pouring spout to the bag package. Furthermore, at least one sealing unit is provided for reactivating, in particular liquefying, the glue coating in order to fix the pouring region to the bag package.
In a preferred embodiment, the glue application station is designed to apply an at least partially annular and/or spout-like glue application to the web of packaging material. In this way, the pouring region can be fixed particularly simply by fixing the corresponding flange.
In a preferred embodiment, the glue application station has at least two application devices which act on different sides of the web of packaging material. The pouring section can thereby be fixed on the outside of the bag package, while the inside is used for the construction of the longitudinal and transverse seams.
In a preferred embodiment, the sealing unit is pressed against the forming device during the fixing of the pouring portion. This makes it possible to dispense with a separate counter-holding device and to use the molding device which is present anyway, thereby further simplifying the device.
In a further advantageous embodiment, the glue application station comprises a plurality of spray nozzles which can be controlled independently of one another. In this way, different packages that can be easily emptied or reclosed can be produced with the same station, also in connection with different shapes of the pourers.
In an expedient further development, the sealing unit comprises at least one receiving device for receiving the pouring portion. The sealing unit can thus be used not only for the reactivation, in particular, of the hot glue, but also for the application of the closure to the packaging web. The sealing unit is particularly preferably designed for this purpose so as to be pivotable between the supply device and the glue application.
In a further embodiment, the sealing unit for reactivating, in particular liquefying, the glue is designed to heat the applied glue at a temperature in the range between 100 and 200 ℃ and/or for a duration in the range between 150 and 400ms, in particular for a duration of 200 ms. Within said range, good results can be achieved in terms of rapid manufacturing and at the same time high stability.
Other embodiments that are suitable for this purpose emerge from further alternative embodiments.
Drawings
Various embodiments are described in detail in connection with the following figures.
In the drawings:
figure 1 shows a perspective view of a first paper bag package with a pouring area on the end side,
figure 2 shows a perspective view of another package of bags made of paper with a pouring area in the upper region,
figure 3 shows a cross-sectional view of the pouring section,
figure 4 shows a diagram of the glue coating pattern on the inside of the bag package,
figure 5 shows a diagram of the glue coating pattern on the outside of the bag package,
figure 6 shows a perspective view of an apparatus for manufacturing a bag package,
figure 7 shows a perspective view of another apparatus for manufacturing a sachet pack,
fig. 8 shows a glue application station for the inner side of the packaging material, an
Fig. 9 shows a glue application station for the outer side of the packaging material.
Detailed Description
Fig. 1 shows a perspective view of a pouch package 1. The pouch pack 1 is configured, for example, as a gable-wall pack or a roof-top pack. The pouring section 78 is arranged on the front side of the sachet pack 1. The pouring section 78 comprises a flange 76 which is glued to the outside 90 of the sachet pack 1. The flange 76 is an integral part of the pouring section 78. The sachet pack 1 comprises an upper transverse seam 6 which closes the sachet pack 1 in the upper region. The lower transverse slot 5 is located in the lower region.
In the embodiment according to fig. 2, the sachet pack 1 likewise has a lower transverse seam 5 and an upper transverse seam 6. Furthermore, a spout 78 is provided, which is however arranged on a side face of the pouch package 1, preferably in the upper region.
Fig. 3 shows a cross section of the cutaway pour 78. The pouring region 78 is designed to be reclosable in that a closure 79, for example a cap, is screwed onto a thread, which is connected to the flange 76. The underside of the flange 76 is glued to the outside 90 of the bag package 1. The closure 79 may also comprise a cutting element which, typically when the bag package 1 is opened for the first time, at least partially opens the bag package in a region inside the region enclosed by the flange 76, so that a product located in the interior of the bag package 1, for example flowable loose material (bulk goods), can be filled through the spout 78. In this way an inventive closure can be achieved.
Alternatively, the packaging material can be blanked in the region enclosed by the flange 76, so that a corresponding cutting element can be dispensed with. Alternatively, the packaging material located below the flange may not only be pre-stamped, scored, punched, etc. but may not be pre-processed at all.
If the pouring off 78 is to be composed of a fiber material or a fiber material mixture, the application can be carried out by means of ultrasound.
The sachet pack 1 consists at least for the major part of paper. The pouch package is manufactured using an adhesive or glue 80. The size 80 may be, for example, a thermal adhesive, a dispersion adhesive, a pressure sensitive adhesive, a tape, or the like. The glue 80 bonds the underside of the spout 78 or flange 76 to the outside 90 of the packaging material 2.
In fig. 4, the coating pattern 8 with the glue 80 on the subsequent inner side 88 of the bag package 1 shows how the glue is applied, for example, during production by the tubular bag machine 100. In the region of the side faces, the glue application takes place in the longitudinal seam regions 3, 4. The application of glue is carried out either in the upper or in the lower region in order to produce an upper transverse seam region 6 or a lower transverse seam region 5.
Fig. 5 shows a glue coating 82 for fixing the pouring region 78 to the outer side 90 of the bag package 1. The glue coating 82 is, for example, annular in shape, corresponding to the contour of the underside of the flange 76. Depending on the geometry of the spout 78, other shapes of the glue coating 82 are also possible.
An application device 111 is provided for applying the glue 80 to the inner side 88 of the bag package 1. An application device 112 is provided for applying glue 80 to the outside 90 of the bag package 1. The two application devices 111, 112 are integral parts of the glue application station. For this purpose, the two application devices 111, 112 are arranged on opposite sides with respect to the web of packaging material or packaging material 2 extending therebetween. It is thereby possible to apply glue to the subsequent inner side 88 of the bag package 1 for producing the bag package 1 and glue to the subsequent outer side 90 of the bag package 1 for fixing the pouring spout 78.
The package as described herein can be manufactured on different devices such as those shown in fig. 6 and 7.
In a first step, a longitudinal seam 5, which is embodied here as a fin seam or lap seam, is produced. This is achieved by creating a seal or reactivating the glue 80, for example by moving the sealing jaws. In addition, folding is performed. Thereby folding the longitudinal seam 5 to one side. In a next further step, the protruding head region 3 is given a gable shape. In this case, the respective folding element is positioned in the middle from both sides during folding. Then, the transverse seam 6 is formed. Here, sealing is performed or the glue 80 is reactivated, for example, by moving the corresponding sealing jaws. The projecting transverse seams 6 are then folded down, so that a flat bottom surface is achieved. Subsequently, the pressing 8 is carried out, so that the base surface together with the corresponding base surface closing part 3 becomes a planar bearing surface. In a next step, the pouring section 78 is placed on the outer side 90 onto the glue coating 82. The applied glue 80 of the glue coating 82 is reactivated, for example reheated, so that the glue 80 applied to the web of packaging material 20 is connected to the spout 78.
The steps described can then be carried out, for example, in the device 10 according to fig. 6. The apparatus 10 comprises at least one glue application station 9. The glue application station 9 applies glue 80 in a defined glue pattern 8, which is particularly suitable for producing dust-tight bag packs 1, in particular with a bottom closure 3, and for installing the pourer 78. For this purpose, the web 20 of packaging material reaches the identification area of the glue application station 9. The glue application station 9 is shown in detail in the enlarged partial view of fig. 6. The application device 111 applies, for example, the coating pattern 8 shown in fig. 4. The application device 112 applies, for example, the coating pattern 8 shown in fig. 5.
The device 10 comprises a conveying wheel 12 in the form of a so-called mandrel wheel which can be rotated, preferably in steps, on a vertical axis 11. A plurality of, in the exemplary embodiment shown, eight holding devices 13 (so-called holding rods) which are arranged at uniform angular distances from one another and project radially outward with respect to the axis 11 are arranged on the conveyor wheel 12. The holding devices 13 are each identically constructed and have a (rectangular) cross section which corresponds to the cross section of the sachet pack 1. The holding device 13 is formed, for example, from two partial elements 14, 15, wherein one partial element 14 has a larger (rectangular) cross section than the other partial element 15, which is designed in the form of a relatively thin plate in the exemplary embodiment. In this case, the second partial element 15 is moved from the position shown in fig. 6, which is spaced apart from the partial element 14, in the direction of the arrow 16 by means of a device not shown, toward the partial element 14, so that, as a whole, a smaller cross section results for the two partial elements 14, 15, which cross section is smaller than the cross section of the bag package 1.
In the position of the second partial element 15 shown in fig. 6, the retaining device 13 has a cross section such that the front wall as well as the rear wall and the side walls of the bag package 1 rest against the retaining device 13 at least virtually without gaps or air.
The bag package 1 is formed from a continuous web 20 of packaging material which is conveyed by means of a conveying device towards or in the direction of a transfer station 21 of the conveying wheel 12.
The web of packaging material 20 is then supplied, in particular, by means of the vacuum suction belt 35 of the device. Said means are arranged inside the delivery wheel 12. On the input region to the device, a separating device 36 with a lower knife 37 and an upper knife 38 is arranged, which are arranged so as to be movable relative to one another for separating packaging material blanks which are adapted to the length of the bag package 1 to be formed.
In order to form the longitudinal seam 5 from the regions 22, 23 of the two edge sides of the web of packaging material 20, the material of the web of packaging material 20 is located in the region of the remaining corner regions of the forming rod 40 in such a way that the longitudinal seam 5 can be formed by means of the sealing device 45 for producing the longitudinal seam 5. Here, the sealing device 45 generates heat and in the process activates or liquefies the glue 80 that has been applied in advance and has dried in the process. To produce the longitudinal seam 5, the respective sealing jaws of the sealing device 45 press the two ends of the web of packaging material 20 against one another, so that the liquid glue 80 connects the two ends to one another to form the fin-shaped seam or longitudinal seam 5. In order to produce the longitudinal seams 5, the sealing device 45 is arranged in the exemplary embodiment in the transport wheel 12. Alternatively, the sealing device may also be arranged in front of the conveying wheel 12, for example in combination with a shaping rod.
For example, vacuum suction strips 48, 49 are located below the forming bar 40 or the holding device 13, wherein one vacuum suction strip 48 is arranged in the region of the folding box table 42 and the other vacuum suction strip 49 is located in the region of the holding device 13.
The conveying wheel 12, which is rotatable in the clockwise direction in the direction of the arrow 52, serves, in addition to the production of the longitudinal seam 5, to fold and seal the bottom closure 3 or to activate the applied glue 80 on the bag blank located on the holding device 13 and, on the other hand, to press the bottom closure 3 against the end face 53 of the holding device 13.
For this purpose, a folding device is arranged at a folding station 55 arranged downstream of the transfer station 21 in the direction of rotation of the conveying wheel 12, said folding device having a plurality of folding elements 57, 58, which are only indicated symbolically and can be moved. A sealing device 60 with sealing jaws 61 for sealing the bottom closure 3 of the bag package 1 is engaged in the folding station 55. A pressing station 65 with a pressing plate 66, which presses the bottom closing 3 folded back toward the end face 53 of the holding fixture 13 against the end face 53 of the holding fixture 13, engages the sealing device 60.
In addition, the delivery wheel 12 is also used to apply the pourers 78. For this purpose, sealing unit 86 is arranged above conveyor wheel 12. The pouring portion 78 to be fixed is supplied to the sealing unit 86 by a supply device 84. The supply device 84 can be configured, for example, as a trough in which the spouts 78 are arranged directly one behind the other. The sealing unit 86 is connected to the pouring section 78. The sealing unit 86 reactivates the hot adhesive 80 of the size coating 82. The sealing unit 86 positions the pouring section 78 on the glue application 82. The sealing unit 86 applies a certain pressure to the respective pouring section 78 in the direction toward the glue application 82. The pouring section 78 is thereby glued to the outer side 90 of the bag package 1 at the location of the glue coating 82.
At the transfer station 70, the substantially formed bag package 1 is removed from the conveying wheel 12 and fed to a conveying device 73, which feeds the bag package 1 to a filling device 72 and a sealing device 74 for forming a head closure of the bag package 1. The conveying device 73 is in the exemplary embodiment a bucket conveyor chain with a plurality of buckets 73a, which each receive a bag package 1.
Since the glue 80 is now applied to the packaging material of paper instead of the hitherto customary sealing of the film and activated and since the bag package 1 is also different, modifications are necessary, if necessary, in the glue application station 9 and/or the sealing device 45 for producing the longitudinal seam 5 and/or the folding station 55 and/or the sealing device 60 and/or the pressing station 65 and/or the sealing device 74 for forming the head closure and/or the sealing unit 86 for fixing the pouring spout 78.
A hot-melt adhesive, also called thermoadhesive material, hot-melt glue, is used as glue 80 for forming the longitudinal seams 5 and the transverse seams 6. The adhesive 80 is a solvent-free and more or less solid product at room temperature which is applied in the hot state to the adhesive side of the packaging material web 20 and which establishes a fixed connection when cooled. The melting point is mainly in the range between 100 ℃ and 200 ℃.
Paper is used as the material for the web of packaging material 20. This relates to the specific paper on which the size 80 has good connection properties. The paper is selected here such that the size 80 is not or only slightly absorbed, but nevertheless a good connection or reactivation is achieved. This is achieved by the special configuration of the sealing devices or sealing units 45, 60, 74, 86 and serves to reactivate the glue 80, which is applied by the glue application station 9. The sealing device or sealing unit 45, 60, 74, 86 has a lower temperature than conventional sealing stations for films, for example in the range between 100 ℃ and 200 ℃. Furthermore, the sealing devices or sealing units 45, 60, 74, 86 are characterized by a long sealing time. The sealing device or sealing unit moves in a range of between 150 and 400ms, particularly preferably 200 ms. Sealing or reactivation is also usually carried out twice, possibly more frequently, in particular when producing the floor closure 3 or head closure, which are characterized by a greater number of layers to be sealed or joined. In addition, a special sealing contour is used. The sealing contour is preferably in this case a web that fits into one another, more preferably a web with a specific angle and a small flat surface. The surface pressure must be uniform and so strong in the region of the layer seam that a sealed packaging material results in the seam.
It has proven to be particularly advantageous to apply or spray the heat-sealable glue 80 to a continuous web of packaging material 20, in particular made of paper, and then to form a bag package 1, for example filled with food, from this web of packaging material on a mandrel wheel using a plurality of holding devices 13. For this purpose, it is necessary to apply glue 80 in strips to the web of packaging material 20 in the region of the sections of the pouch pack 1 forming the transverse seams 6, 7 (bottom and top seams) and the longitudinal seam 5, in order to form the desired application pattern. In the construction of the bag package 1 shown in fig. 1, a strip of glue 80 is applied to the edge regions 22, 23 of the web of packaging material 20. The strip of glue 80 does not extend over the other side or edge region 22, 23. A first strip of glue 80 extends perpendicularly to the edge regions 22, 23 of the web of packaging material 20, said first strip then forming the head seam 7. Another strip of glue 80 runs parallel at a small distance, which in turn forms the base seam 6 or the transverse seam 6. The strips merge on one side into the strip on the edge side for the subsequent longitudinal seam 5. On the other side, however, the strip ends on the edge side at a distance from the edge regions 22, 23. The distance of this glue-free region 80 corresponds approximately to the width of the strip for the longitudinal seam 5, so that when the two edge regions 22, 23 are subsequently joined to form the longitudinal seam 5, no particularly thick glue regions are formed at the intersection between the longitudinal seam 5 and the transverse seams 6, 7.
The glue 80 dries after being applied to the web of packaging material 20, so that the web of packaging material 20 can be transported unadhered through the subsequent devices of the device 10. In order to form the transverse or longitudinal seams 5-7, the dried glue 80 is activated again by heat, so that the mentioned seams 5-7 can be formed.
Alternatively, the pour 78 may be applied to a flat strip of packaging material 20. The supply device 84 must therefore supply the pour 78 between the glue application station 9 and the transfer wheel 12. In this position, the sealing unit 86 activates the glue application 82 for fixing the pouring region 78 in this position. Accordingly, the sealing unit 86 supplies the pouring section 78 to the position of the glue application layer 82.
Fig. 7 shows a schematic illustration of a packaging device in the form of a vertical tubular bag machine 100 for producing bags 1 for dry bulk material, for example food products such as rice, pods, oatmeal, candy, noodles, sugar, flour or the like. The bag 1 is made of paper, in particular, which is stored in the form of a continuous web 20 of packaging material in the form of a roll and supplied to the tubular bag machine 100.
The tubular bag machine 100 essentially has a first region 101, which comprises a plurality of guide or dancer rollers 102 for guiding the web of packaging material 20, wherein the web of packaging material 20 or the like is partially coated with an adhesive 80 in the form of a heat-sealable hot-melt adhesive. The application of the web of packaging material 20 takes place continuously at the same location for the region of each bag 1 on the packaging material rail 2, wherein fig. 4 shows a cut-out of rectangular bags 1 with two longitudinal seam regions 3, 4, each provided with glue 80, and a lower transverse seam region 5 and an upper transverse seam region 6. The longitudinal seam regions 3, 4 and the transverse seam regions 5, 6 form a coating pattern of the glue 80 on the web of packaging material 20.
The application of glue 80 in the region of the longitudinal seam regions 3, 4 and the transverse seam regions 5, 6 takes place in the embodiment shown by means of a glue application station 9 arranged in the first region 101, which comprises two, at least two application devices 111, 112 in the conveying direction 7 of the web of packaging material 20. The application devices 111, 112 are arranged on different sides of the web 2 of packaging material. In the region of the application device 9, not only a continuous feed of the packaging material web 20 but also a clocked feed is possible. The application of the adhesive material 80 may also be performed to a free floating web of wrapping material 20 or to a web of wrapping material 20 against a roller or the like. A device 15, described below, can optionally be attached to the area of the two application devices 111, 112, by means of which the glue 80 applied to the web of packaging material 20 can be processed for shortening the drying time thereof, for which purpose the device 15 has, for example, cooling or ventilation means.
The dried web 20 of packaging material with the coating pattern 8 passes from the first region 101 into the second region 103 of the tubular bag machine 100, which has a forming shoulder 105, a forming and filling tube 106, a longitudinal sealing device 107 and a transverse sealing and separating device 108 in the usual manner. With the aid of the device mentioned, a tube is first formed from the web 20 of packaging material, which is then filled with the food product, and finally the individual bags 1 are separated from the tube.
Furthermore, sealing unit 86 is arranged in the region of forming tube 106. The pouring section 78 is supplied to the sealing unit 86 by the supply device 84. The supply device 84 can be configured, for example, as a trough in which the spouts 78 are arranged directly one behind the other. The sealing unit 86 is connected to the pouring section 78. The sealing unit 86 reactivates the hot adhesive 80 of the size coating 82. The sealing unit 86 positions the pouring section 78 on the glue application 82. The sealing unit 86 applies a certain pressure to the respective pouring section 78 in the direction toward the forming tube 106. The pouring section 78 is thereby glued to the outer side 90 of the bag package 1 at the location of the glue coating 82.
Fig. 8 shows an exemplary embodiment of the glue application device 9, in which glue is introduced into a stationary housing 25 by means of eight not shown glue nozzles that can be individually controlled. The housing 25 interacts with a replaceable mask 26, which has eight channels 27a to 27 h. The amount of glue and the supply into the spout 28, from which glue is applied to the web 20 of packaging material, can be influenced by the size or dimensions of the channels 27a to 27h and the thickness of the mask 26.
In fig. 9, an applicator 112 for producing a possible coating of glue 82 on the outside 90 of the web of packaging material 20 or the bag package 1 is schematically shown. The application device 112 has a size nozzle unit 115. The glue overlay 82 has, for example, a pixelated circular shape. For this purpose, the individual nozzles may be switched on with a time delay as part of the glue nozzle unit 115 of the application device 112. The nozzle may be configured similarly to the nozzle of the applicator 111. Eight nozzles are shown by way of example, through which the glue 80 can be applied. The width of the application device 112 transversely to the direction of transport 7 of the packaging material web 20 is selected such that it reliably covers the width of the glue coating 82. Furthermore, the nozzles must be spaced apart from one another in such a way that a desired pattern can be produced which substantially corresponds to the underside of the flange 76 of the pouring section 78. The switch-on times of the respective nozzles are selected or differentiated in such a way that the desired pattern of the glue coating 82 occurs. The nozzles are therefore activated partially with a time delay relative to one another.

Claims (20)

1. An apparatus (10) for producing a bag package (1) from at least one web (20) of packaging material, having at least one forming device (13, 106) for forming a bag package (1) from the web (20) of packaging material, at least one sealing device (45, 60, 74) for forming at least one longitudinal and/or transverse seam (5) of the bag package (1), characterized in that at least one glue application station (9) is provided, by means of which a glue coating (82) can be applied to the web of packaging material (20) consisting of paper in order to fix the at least one pouring portion (78) on the bag package (1), and at least one sealing unit (86) is provided for reactivating the glue coating (82) in order to fix the pouring portion (78) on the bag package (1).
2. Device according to claim 1, characterized in that the glue application station (9) is configured for placing an at least partially annular and/or spout-like glue application layer (82) onto the web of packaging material (20).
3. Device according to any one of the preceding claims, characterized in that the glue application station (9) has at least two application devices (111, 112) acting on different sides of the web of packaging material (20).
4. Device according to claim 1 or 2, characterized in that at least one supply device (84) for at least one pouring spout (78) is provided for supplying the pouring spout (78) to the sealing unit (86).
5. A device according to claim 1 or 2, characterized in that the sealing unit (86) is configured such that it is pressed against the forming device (13, 106) when the pouring portion (78) is secured.
6. Device according to claim 1 or 2, characterized in that the glue application station (9) has a plurality of nozzles that can be controlled independently of each other.
7. A device according to claim 1 or 2, wherein the sealing unit (86) comprises at least one receiving means to receive the pouring portion (78).
8. The device according to claim 4, characterized in that the sealing unit (86) is configured to be pivotable between the supply device (84) and the glue application (82).
9. Device according to claim 1 or 2, characterized in that the forming device (13, 106) is an integral part of a mandrel wheel and/or a hose bag machine.
10. The device according to claim 1 or 2, characterized in that the sealing unit (86) for reactivating the glue mass (80) heats the applied glue mass (80) in a temperature range of between 100 and 200 ℃ and/or for a duration of between 150 and 400 ms.
11. The apparatus according to claim 10, wherein the sealing unit (86) is configured for liquefying the glue material (80).
12. Device according to claim 10, characterized in that the sealing unit (86) heats the applied glue (80) for a duration in the range between 150 and 200 ms.
13. The device according to claim 1 or 2, characterized in that the sealing unit (86) is configured for liquefying the coating (82) of glue.
14. Method for producing a bag package (1) from at least one web of packaging material (20), wherein at least one bag package (1) is formed from the web of packaging material (20) by means of a forming device (13, 106), wherein at least one longitudinal and/or transverse seam (5) of the bag package (1) is constructed, characterized in that at least one glue coating (82) is applied to the web of packaging material (20) consisting of paper in order to fix a pour-out (78), the pour-out (78) being applied to the glue coating (82).
15. Method according to claim 14, characterized in that the at least one sealing unit (86) for reactivating the glue mass (80) heats the applied glue mass (80) at a temperature in the range between 100 and 200 ℃ and/or for a duration in the range between 150 and 400 ms.
16. Method according to claim 14 or 15, characterized in that the pouring part (78) is supplied, taken off by a sealing unit (86) and supplied to the glue coating (82).
17. Method according to claim 14 or 15, characterized in that the glue coating (82) is applied at least partially annularly and/or in a pour-out shape on the outside (90) of the bag package (1).
18. Method according to claim 14 or 15, characterized in that at least two application devices (111, 112) apply glue (80) on different sides of the web of packaging material (20).
19. Method according to claim 15, wherein the sealing unit (86) is configured for liquefying the glue material (80).
20. Method according to claim 15, characterized in that the sealing unit (86) heats the applied glue (80) for a duration in the range between 150 and 200 ms.
CN201710866540.1A 2016-09-22 2017-09-22 Device and method for producing a bag package Active CN107856969B (en)

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