EP4045419A1 - Bag, method and device for producing a bag - Google Patents
Bag, method and device for producing a bagInfo
- Publication number
- EP4045419A1 EP4045419A1 EP20793281.5A EP20793281A EP4045419A1 EP 4045419 A1 EP4045419 A1 EP 4045419A1 EP 20793281 A EP20793281 A EP 20793281A EP 4045419 A1 EP4045419 A1 EP 4045419A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- openings
- bag
- partial
- area
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 28
- 238000005520 cutting process Methods 0.000 claims description 17
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 238000004080 punching Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- 238000003698 laser cutting Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/004—Closing bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives
-
- 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
- B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/06—Handles
- B65D33/10—Handles formed of similar material to that used for the bag
- B65D33/105—U-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
- B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
- B31B2160/106—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from sheets cut from larger sheets or webs before finishing the bag forming operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/06—Handles
- B65D33/08—Hand holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/06—Handles
- B65D33/12—String handles
Definitions
- the invention relates to a bag according to the preamble of claim 1 and to a method and a device for producing a bag.
- the second wall protrudes beyond the first wall in the bottom area, so that when the bottom is formed, the second wall with the area protruding beyond the first wall rests directly on the first wall after folding. If the second wall is now connected to the first wall, for example by gluing, a durable and sufficiently sealed base is created.
- the term “immediately” means that between the inside of the second layer and the outside the first layer only a fastening material, for example an adhesive or a double-adhesive film, such as a double-sided adhesive tape, is arranged, and precisely no material that does not contribute to the connection of the second layer.
- the object of the present invention is therefore to propose a bag, as well as a method and a device, so that the bag is simpler in structure and manufacture.
- a bag according to the invention which comprises the preamble features of claim 1, is characterized in that the partial surface of the first wall comprises openings through which parts of the partial surface of the second wall contact the first wall directly and / or is connected to it.
- the partial surface of the first wall comprises openings through which parts of the partial surface of the second wall contact the first wall directly and / or is connected to it.
- the second wall protrudes beyond the first wall in order to enable direct contact of the second wall with the outside of the first wall
- parts of the partial surface of the second wall extend through the openings in the first wall. Parts of the partial area of the second wall can now be connected to the first wall through these openings.
- first wall or “second wall” are not to be understood as meaning any directional assignment. This means that the first wall can be arranged at the top or at the bottom in the manufacturing process, for example.
- a bag according to the invention comprises paper or consists entirely of paper.
- a bag according to the invention several openings are provided which are spaced at a minimum distance from an end edge of the first wall and / or an end edge of the second wall.
- the end of the respective wall at the bottom end is common to one end edge, the end edge preferably running perpendicular to the side edge and lying in the plane of the wall in question.
- the minimum distance can be at least 3 mm and contributes to the fact that, particularly when an adhesive is applied, it is not pressed beyond the end edge and thus leads to soiling of the manufacturing machine.
- openings are evenly distributed over the partial area of the first wall. “Evenly distributed” means that two adjacent openings are each evenly spaced. However, openings but one can also have the same spacing. In this way it is achieved that the second wall is in contact with the outside of the first wall and is connected to it, distributed over a large surface area. This increases the durability of the floor.
- the area proportion of all openings is at least 20%, in particular 30% and preferably at least 50% of the total area of the first partial area.
- the area share is a maximum of 80%.
- the partial area of the second wall is connected to the first wall to a sufficiently large extent. Depending on how the openings are made, this area portion can even be designed variably.
- the area portion can be greater than in the prior art, in which the area portion is limited to the partial area by which the second wall protrudes beyond the first wall. In this way, the partial surface of the second wall can be connected particularly firmly to the first wall as required. It is advantageous if openings are round or oval in shape, ie have a round or oval edge.
- angular edges are also conceivable, but round or oval openings prevent the material of the partial surface of the first wall from tearing and leading to damage.
- the diameter of the openings can be a few millimeters to a few centimeters. In the case of an oval opening, the diameter means the small radius.
- the diameter can be from 1 mm, preferably from 5 mm, to 5 cm, preferably up to 2 cm. With these diameters, a number of openings that is sufficient for good durability can be created without weakening the partial area of the first wall too much.
- the end edges of the first and second walls lie one above the other or essentially one above the other. “Essentially on top of each other” means that the end edges lie on top of each other before the bottom is formed, but can be shifted slightly by 180 ° when they are folded over and then no longer lie exactly on top of each other. A slight, if hardly noticeable, shift can of course also occur at the opening end of the bag when the bottom is folded over.
- This further development of the invention is particularly advantageous because the tube piece required for this, from which the bag is formed, can be separated from a tube in a simple manner.
- a cutting tool can simply be used to manufacture a bag according to the invention that simultaneously covers the first wall and the second Wall cut through, can be used. This severing can also take place when a tube has already been created.
- a known machine structure can also be used in which a perforation is first made on the flat web, then the hose is formed and then hose pieces are torn off the hose.
- a simple perforation tool can be used, which creates a perforation that runs on a single straight line that runs transversely to the transport direction of the flat web - or even the hose - runs.
- parts of perforation tools are offset in the direction of transport. The use of cutting tools enables the creation of a straight cutting edge which is attractive, so that higher quality bags can be produced in this way.
- grip elements are provided.
- Gripping elements can include punched-out areas or incisions, that is to say represent gripping holes.
- the actual handle is formed by a user of the bag reaching through the incisions and areas of the first wall and the second wall being folded over, the folded areas forming handle reinforcements.
- Such punch-outs or incisions can be made in the flat web, but can also be made in the flat web after the hose has been formed or after the hose pieces have been separated. Cutting or punching is also possible after the bag has been completed.
- This type of handle element can be manufactured very easily and inexpensively.
- Gripping elements can, however, also be gripping pieces that are separately attached to the first and / or second wall.
- Such gripping pieces can include, for example, cords or other tapes, paper strips which are in particular folded several times over one another, or plastic strips or tapes.
- the use of grips makes it possible to use the interior of a bag according to the invention completely or almost completely.
- a bag with handles often appears to be of higher quality.
- Grips can be applied to the flat sheet and glued to it, for example with labels, cold glue or heat-activated glue (hot melt). This process can be carried out after perforations have been made. This process can also take place before perforations are made.
- the handles in or on Finished bags are first folded back so that they do not protrude beyond the open end of the bag. Folding past the end of the bag can then be done with grasping the bag.
- the handle pieces are arranged on the inside of the walls, they are initially completely in the filling space of the bag. In the case in which the handle pieces are on the outside of the walls, they can even be attached after the hose has been formed, after the hose has been separated into hose pieces or even after the bottom has been formed.
- the area of use of a bag according to the invention can be significantly increased by providing grip elements, since heavy objects can also be carried by the user without any problems with such a bag.
- Gripping elements can generally also be provided with reinforcing elements, the reinforcing elements covering and reinforcing the edges in the case of punchings or incisions.
- reinforcing elements can be applied to the ends of the grips and, for example, glued.
- Reinforcement elements can serve to distribute the flow of force that is introduced into the grip elements over a larger area of the walls and thus to increase the load-bearing capacity.
- side gussets are provided between the first and second walls.
- Such side folds also include the side edges which, according to patent claim 1, connect the first wall and the second wall to one another.
- Gussets offer the advantage that the first wall and the second wall can be removed from one another, so that the filling space is enlarged.
- the bag forms a cuboid shape with the side gussets folded apart, wherein the bag can also be arranged upright in the unfilled state, so that the filling of the bag is made easier.
- pre-breaks can be made in the flat web.
- Such pre-breaks can be in the first and / or in the second wall before the hose is formed be introduced. These pre-breaks are preferably spaced apart from the later bottom edge by a certain amount, this amount corresponding to the depth of the side folds. It is preferred here if areas of the side folds which are located between the partial surface of the first wall and the partial surface of the second wall also include openings. In this way, not only the partial area of the second wall can be glued to the first wall and / or the side gusset wall arranged below the partial area of the second wall, but also the side gusset walls to one another or also the partial area of the second wall to the one directly on the partial area of the first Wall arranged side gusset wall.
- the openings in the gusset wall are at least partially congruent with at least one opening in the partial surface of the first wall and / or at least some of the openings in the first gusset wall are at least partially congruent with at least one opening in the second gusset wall is congruent.
- areas of the partial surface of the second wall can also be connected to the first wall through the side gusset walls and / or the partial surface of the first wall. As a result, the bottom strength of a gusseted bag can be further increased.
- the method according to the invention is further characterized in that in a further step openings are made in the partial area of the first wall so that parts of the partial area of the second wall are brought into contact and / or connected to the first wall when performing step d can.
- the characterization of process steps a) to d) of the preamble of claim 11 does not define a sequence of the process steps mentioned, even if this sequence is generally adhered to in known processes.
- the base can consequently be brought into direct contact with the first wall by folding the partial surface of the first wall and the partial surface of the second wall together.
- at least the partial area of the second wall, but preferably partial areas of the first and the second wall, is fastened, for example glued, to the first wall.
- the first wall is at least partially in a surface area that is in contact with the first and second walls after folding, and / or the sub-area of the first wall, and consequently parts of the sub-area of the second wall through the openings , is covered with an adhesive before the end of the folding step.
- the further step namely the making of openings in the Partial area of the first wall to be carried out between steps a) and b).
- the openings are made by punching out and / or by cutting out pieces of material. This can be done, for example, by a punching tool, which in particular includes a rotating tool that carries punching elements, such a rotating tool can be rotatably driven, wherein during the punching period the peripheral speed corresponds to the transport speed of the flat web or at least substantially corresponds to that, for example no compressions or tears in the material web can occur.
- the flat web can be guided over a counter roller while openings are being made.
- the material which is possibly separated from the flat web by the introduction of the openings can be removed, for example, with a suction device.
- the openings can be introduced by a contactless cutting out of pieces of material, in particular by laser cutting.
- laser cutting i.e. applying a focused light beam to the cutting edges, has proven itself. It is advantageous that a contactless cutting process reduces the wear and tear on a device for creating openings.
- the openings can also be advantageous for the openings to be introduced through perforations. In this case, small openings (diameter less than 3mm) are made. This does not result in any punched out or torn out
- Fig. 1 A flat web for the freeing position of a bag according to the invention
- FIG. 4 The formation of the bottom necessary for the completion of the bag.
- Fig. 5 A completed bag
- FIG. 1 shows a flat web 100 from which a plurality of bags according to the invention can be or will be produced.
- the track section 101 from which the hose section necessary for the positioning of a bag is produced, is characterized by thick, dash-dotted lines 102, which run transversely to the transport direction T of the flat web 100.
- the lines 102 thus represent dividing lines.
- the representation of the flat web is preferably a view of the inner surfaces of the later walls of the bag.
- the track section 101 is divided into the surface area 110, which forms the predominant part of the later first wall or completely the first wall, and the surface area 111, which forms the later second wall.
- the surface areas 110 and 111 are delimited by the closest broken lines 103 or by the lines 104. Their meaning is described below.
- the broken lines 103 and the dash-dotted lines 104 identify the optional side folds, the lines 103 forming the outer edges of a side fold and the dash-dotted lines 104 forming the inner edge of a side fold.
- the lines 103 are omitted and the lines 104 form the outer longitudinal edges of the bag.
- the areas 105 and 105 'on the longitudinal edges of the flat web 100 are those areas which, after the tube formation, overlap and adhere to one another, for example by gluing.
- FIG. 2 shows the same flat web 100 after two further processing steps have been carried out.
- grip elements 200 can be seen. These grip elements 200 are shown by way of example as separately applied grip elements. These can be applied to the later inner sides of the walls of the bag.
- the grip elements 200 shown comprise grip strips 201 - preferably paper strips - which are folded in a U shape. The grip strips can consist of pieces of paper that are folded onto themselves several times.
- the grip strips 201 are attached to the flat web 100, preferably glued on with cold glue or hot-melt adhesive, parts of the grip strips being able to protrude beyond the trailing dividing line 102 of the later tube section, as shown.
- the grip strips are folded back on themselves so that they do not protrude beyond the dividing line 102.
- the tube section it is possible for the tube section to be produced by severing cuts along the severing lines 102 without damaging the grip strip.
- the separation of hose sections by means of separating cuts is fundamentally independent of the Presence or the design of the handle elements - conceivable within the scope of the present invention.
- Another possibility is the introduction of perforations along the dividing line 102 before or after the hose formation, with no complete cut being formed, but rather individual webs connecting the individual later hose sections. These webs are severed by tearing them off later, creating the desired hose sections.
- a folded-back grip strip 201 can be folded out by the user of the later bag when it is used.
- reinforcement label 202 which is preferably also made of paper, to the flat web and to parts of the grip strips, with each reinforcement label covering the ends of the grip strips 201. It can also be attached using a cold adhesive or a hot-melt adhesive. However, it is also conceivable that the reinforcement labels 202 consist of self-adhesive labels.
- FIG. 2 also shows openings 203 which, as can be seen, are preferably arranged on an imaginary line transverse to the transport direction.
- the openings 203 are only arranged on the later first wall 110 and optionally in the area of the later side folds, if these are provided.
- the openings are arranged between the later front end of the hose section, which is formed by the dividing line 102, and the later folded edge 204.
- FIG. 3 shows the web section 101 after the hose has been formed and after the separation has taken place.
- the illustrated but optional side folds can be introduced into the flat web 100 at the same time as the hose is formed or subsequently, both of which are advantageous.
- the side gussets are folded after the separation.
- the track section further manufactured in this way already represents a bag 300, but still without a finished base.
- the outer edges 103 and the inner edges 104 of the side folds are also visible. Above all, the openings 203 are visible, it now being clear from the figure that the openings are only arranged in the surface area 110 or in the side folds.
- the openings in the side folds and the opening in the part of the surface region 110 which cover the side folds preferably lie at least partially, in particular completely, one above the other. In this way, the part of the surface area 111 which lies below the side folds can also be glued to the surface area 110 through the side folds.
- FIG. 4 now shows, by way of example, the bottom 400 of the bag which has already been partially folded over around the folded edge 204, the surface 401 representing an application of adhesive.
- This application of adhesive can, however, be applied to the surface of the surface region 110 associated with the floor.
- the adhesive application can be applied over the entire area in which the folded floor touches the first wall, or it can only be applied to partial areas thereof. In particular, the adhesive can only be applied to the partial areas in which the openings touch the first wall. Thus, only parts of the folded part of the second wall are connected to the first wall. This measure helps to save glue.
- Adhesive is preferably applied together with the introduction of the folded edge 204. For this purpose, an adhesive application strip and a folded edge knife can be attached together on a rotatable tool.
- FIG. 5 now shows a finished bag 300.
- FIG. 6 shows the sequence of a preferred method for setting a bag according to the invention.
- a flat web is first provided.
- the openings 203 are made in this flat path in the flat path.
- transverse perforations are made in the flat web, which define the later separating edges 102.
- the transverse perforation and the introduction of the openings in the same station of a device for setting up according to the invention Bags be arranged.
- a transverse perforation knife and punch for making the openings are arranged together on a rotating element, for example a knife roller.
- step 603 grip elements are produced, for example by a corresponding application unit in the device.
- the tube is then formed in step 604, in particular with the simultaneous folding in of gussets.
- step 605 the hose is separated into hose pieces. This is followed in step 606 by folding over and securing the base onto or on the first wall of the bag. The bag is now complete.
- FIG. 7 shows an apparatus 1 for producing bags.
- the device 1 comprises an unwinding device 2 to which the flat web 100 is fed in the form of a roll 4.
- the flat web 100 is fed via guide rollers 5 to the cross-cutting station 6 or perforating station 6.
- This station 6 can comprise one or more cross-cutting or cross-perforating knives, not shown in detail, which rotate on a roller 7.
- punching elements for making the openings 203 can also be arranged in this station and likewise rotate on the roller 7.
- the flat web 100 runs in this station 6 over a counter-pressure roller 8, which primarily has the purpose of providing the counter-pressure necessary for the cutting or perforating process. In this cutting or perforating process, the web is not severed, but the flat web 100 can be provided with weakening cuts or perforations, along which the tube to be formed later tears for separation into tube pieces.
- the flat web 100 then passes through a roller gap formed by a further guide roller 5 and a roller designed as a longitudinal glue 26.
- a tube 10 is formed from the flat web 100 by folding in the flat web 100 laterally by means of guide elements, such as guide plates, so that the edges of the material web then overlap.
- the subsequently overlapping areas have already been provided with a suitable adhesive by means of the longitudinal glue 26.
- Gussets can also be inserted while the paper web is being wrapped.
- the gussets can also be inserted after the tube has been formed.
- the hose 10 is now mostly continued in the transport direction T.
- the hose 10 After the hose 10 has been produced, it is separated into hose pieces 12 in the tear-off station 11. For this purpose, the hose 10 is passed through the nip of a first pair of rollers 13. As the hose continues to advance, it enters the nip of a second pair of rollers 14.
- the rollers of the second pair of rollers constantly or at least temporarily have a higher peripheral speed than the rollers of the first roller pair 13, the peripheral speed of which advantageously corresponds to the transport speed of the hose 10.
- the second roller pair 14 engages the hose 10. This can be done by the leading end of the hose running into the nip of the second pair of rollers.
- the rollers of the second roller gap 14 can, however, also be moved relative to the hose 10, for example perpendicularly, and placed against the hose.
- the rollers of the second nip 14 are in contact with the hose, the hose tears along the cut or the perforation which was made in the web in station 6.
- One of the rollers of the first roller pair 13 can also carry a cutting knife with which the hose can be separated into individual hose pieces 101 by means of so-called smooth cuts.
- the perforation of the flat web within the station 6 can be omitted.
- the upper edge of the bag has a sizable edge that does not is frayed or frayed, as is the case when pieces of hose are torn off.
- the hose piece 101 torn from the hose now reaches the floor gluing and bottom folding station 15.
- the hose piece 101 is held on the floor maker cylinder 16.
- a suitable element for example a rod
- the leading end of the hose piece is folded over, so that parts of the lower (second) wall are folded back together with parts of the upper (first) wall, so that parts of the upper wall and through the openings parts of the lower wall also rests through it on the upper layer.
- the tab and / or the area of the outside of the upper wall on which the tab rests after being folded over is provided with an adhesive, for example with glue.
- the glue application device which is symbolized in FIG. 7 by the glue cylinder 17, is used for this purpose.
- the bag After the bag has been completed, it is placed on a table 18 by means of the bottom maker cylinder 16.
- the bags are usually arranged upright. From this table 18 the bags can then be removed in stacks in a suitable manner.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019215785.8A DE102019215785A1 (en) | 2019-10-14 | 2019-10-14 | Pouch, method and apparatus for making a pouch |
PCT/EP2020/078374 WO2021074020A1 (en) | 2019-10-14 | 2020-10-09 | Bag, method and device for producing a bag |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4045419A1 true EP4045419A1 (en) | 2022-08-24 |
Family
ID=72944102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20793281.5A Pending EP4045419A1 (en) | 2019-10-14 | 2020-10-09 | Bag, method and device for producing a bag |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4045419A1 (en) |
DE (1) | DE102019215785A1 (en) |
WO (1) | WO2021074020A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US143321A (en) * | 1873-09-30 | Improvement in paper bags | ||
US421191A (en) * | 1890-02-11 | Paper bag | ||
GB776382A (en) * | 1954-12-17 | 1957-06-05 | Metal Box Co Ltd | An improved bag and method of making same |
BE755472A (en) * | 1969-08-29 | 1971-02-01 | Lehmacher Hans | BAG AND PROCESS AND DEVICES FOR ITS MANUFACTURE |
DE9106230U1 (en) * | 1991-05-21 | 1991-07-18 | Hans Danner Papierwarenfabrik u. Kunststoffwerk GmbH & Co. KG, 8500 Nürnberg | Paper carrier bag |
EP2415684B1 (en) * | 2010-08-06 | 2013-08-07 | Mondi AG | Film bag having a bottom end section |
DE202012100652U1 (en) * | 2012-02-27 | 2012-04-02 | Windmöller & Hölscher Kg | Container and device for the production of containers |
-
2019
- 2019-10-14 DE DE102019215785.8A patent/DE102019215785A1/en active Pending
-
2020
- 2020-10-09 WO PCT/EP2020/078374 patent/WO2021074020A1/en unknown
- 2020-10-09 EP EP20793281.5A patent/EP4045419A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102019215785A1 (en) | 2021-04-15 |
WO2021074020A1 (en) | 2021-04-22 |
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