EP2238046B1 - Becher aus einem papiermaterial und verfahren und vorrichtung zum herstellen - Google Patents

Becher aus einem papiermaterial und verfahren und vorrichtung zum herstellen Download PDF

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Publication number
EP2238046B1
EP2238046B1 EP09704582.7A EP09704582A EP2238046B1 EP 2238046 B1 EP2238046 B1 EP 2238046B1 EP 09704582 A EP09704582 A EP 09704582A EP 2238046 B1 EP2238046 B1 EP 2238046B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
shoulder
cup
radius
shell
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
EP09704582.7A
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German (de)
English (en)
French (fr)
Other versions
EP2238046A1 (de
Inventor
Uwe Messerschmid
Werner Stahlecker
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.)
PTM Packaging Tools Machinery Pte Ltd
Original Assignee
PTM Packaging Tools Machinery Pte Ltd
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Filing date
Publication date
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Application filed by PTM Packaging Tools Machinery Pte Ltd filed Critical PTM Packaging Tools Machinery Pte Ltd
Priority to PL09704582T priority Critical patent/PL2238046T3/pl
Publication of EP2238046A1 publication Critical patent/EP2238046A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0233—Nestable containers
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/10—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by form of integral or permanently secured end closure
    • B65D3/12—Flanged discs permanently secured, e.g. by adhesives or by heat-sealing
    • B65D3/14—Discs fitting within container end and secured by bending, rolling, or folding 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3865—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers
    • B65D81/3869—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers formed with double walls, i.e. hollow
    • 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
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • 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
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • 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
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0022—Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom 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
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/10—Shape of rigid or semi-rigid containers having a cross section of varying size or shape, e.g. conical or pyramidal
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/59—Shaping sheet material under pressure
    • B31B50/594—Modifying the shape of tubular boxes or of paper bottle necks

Definitions

  • the invention relates to a cup made of a paper material with a fillable interior, which is formed by a conical jacket and a bottom, wherein the bottom is fixed at the lower end of the interior with a frame substantially liquid-tight manner on the jacket, wherein on the inner space bounding shell a shoulder is arranged for holding a similar cup in stacking a plurality of cups.
  • the invention further relates to a method for producing a cup of a paper material, which consists of a conical jacket and a liquid-tightly secured in the region of the smaller circumference of the shell by a frame bottom, wherein a shoulder is formed in the jacket, which is used to hold a similar Bechers serves in stacking several cups.
  • the invention further relates to an apparatus for producing a cup from a paper material having a mandrel for a conical shell and a bottom of the cup, the mandrel having a shoulder for forming a shoulder in the shell.
  • shoulder should be understood so that the shoulder forms a sudden change in size of the shell. Seen from the bottom of the cup to a filling opening, the shoulder presents itself as an abrupt cross-sectional enlargement.
  • the shoulder can also be referred to as a "bead”.
  • the shoulder or bead is a means for holding another cup of the same kind. For transportation, a plurality of similar cups are stacked in one another. Thus, the cups do not wedged into each other and also can be unstacked well, the shoulder is provided as a means for stacking in the jacket.
  • a cup, a method and a device of the type mentioned is by the DE 10 2004 056 932 A1 State of the art.
  • the well-known cup has a shoulder that gives the cup quite good stacking properties.
  • a prefabricated cup is used as a semi-finished product, in which the bottom is already attached to the frame liquid-tight manner on the jacket.
  • the shoulder is shaped by an axial displacement of a mold towards the larger circumference of the conical jacket.
  • the inner diameter of the mold is larger than the outer diameter of the bottom and the frame, so that the mold can be pushed over from below over the frame, without damaging the frame and affecting the tightness. This inevitably results in that the radius of the shell below the shoulder is greater than at the level of the ground.
  • the size of the sudden change in size of the jacket at the shoulder is limited.
  • a double-walled plastic cup which is made by vacuum-forming heated plastic sheet material.
  • the inner cup of this double-walled cup may have a reentrant shoulder which may serve to unstack a second cup.
  • the bottom of the upper cup rests on the circumferential shoulder of the lower cup.
  • the bottom frame is widened at its lower edge in the radial direction.
  • the bottom frame has a course following the cone angle of the inner cup in its region adjoining directly to the bottom of the cup, and is expanded radially outward only in a region spaced from the bottom. The expansion serves to secure an insulating sleeve of the cup, which is pushed onto the inner cup against slipping off.
  • the invention is based on the object to further improve the stacking properties of a cup of the type mentioned.
  • the object is achieved by a cup having the features of claim 1.
  • the radius of the shell is - seen to the central axis of the cup - below the shoulder highest as large as the radius of the ground.
  • the radius of the shell below the shoulder is even smaller than at the level of the ground.
  • the object is solved by the features of claim 5.
  • an area of the shell is deformed to a radius - seen to the central axis of the cup - which is smaller than the radius of the shell on the finished cup at the level of the bottom.
  • the shoulder is formed before the floor is substantially liquid tightly connected to the shell.
  • the object is solved by the features of claim 13.
  • At the shoulder of the mandrel adjoins an area in which the radius of the mandrel - seen to the central axis of the mandrel - smaller than the outer radius of the cup bottom is.
  • the stacking properties of such a cup are improved because the sudden change in size of the shell at the shoulder is increased.
  • the stability and power-absorbing capacity of the shoulder is increased, so that even a large number of stacked cups can not be wedged together and easily unstacked again.
  • the jacket is preferably circular in cross-section, but may alternatively be, for example, oval or rectangular with rounded corners.
  • the cup has a roughly truncated cone-like shape in the case of a round cross-section, while in the case of a rectangular cross-section of the shell it has a rather truncated pyramidal shape.
  • the radius of the shell is defined at a non-circular cross-section of the shell as the distance of a region of the shell to the central axis of the cup. For a circular cross-section of the shell, the radius is defined as half the diameter.
  • paper material from which the bottom and the jacket are made can be understood as meaning different materials which have at least one layer of paper, cardboard or cardboard.
  • the material may comprise one or more layers of plastic and / or aluminum.
  • the paper material is waxed or painted in order to have a resistance to the liquid to be filled into the interior.
  • the paper material is at least on the side bounding the interior with a thin plastic layer, preferably made of polyethylene, coated.
  • a thin plastic layer preferably made of polyethylene, coated.
  • the frame is an essential design feature that can not be dispensed with.
  • the frame is necessary for the connection between the jacket and the floor.
  • At the frame are at least two layers of material in the thickness direction to each other, namely the material of the bottom and the material of the inner space bounding shell.
  • the bottom is designed pot-shaped, the open side of the filling opening of the cup is remote.
  • the at least two material layers are thus preferably arranged along the wall of the cup-shaped bottom.
  • the jacket is wrapped around the material of the floor, and that the frame consists of three or more layers of material.
  • the material of the bottom is glued or sealed to the material of the jacket in the region of the frame in order to be liquid-tight at least for a certain period of time.
  • the shoulder is formed before the bottom is substantially liquid-tightly connected to the shell.
  • the bottom is already inside the shell shaped sleeve, but is not yet connected to the mantle.
  • the radius of the bottom can thereby be reduced by forming the shoulder in the elastic region by compression.
  • the tightness of the frame can not be adversely affected by the shaping of the shoulder, since the bottom is connected to the shell substantially liquid-tight only in a shoulder forming the shoulder downstream process step.
  • the compression of the soil does not affect the subsequent production of the frame at all.
  • the shoulder is formed by an axial displacement of a mold towards the larger circumference of the conical jacket out.
  • the mold is pushed from below, ie from the region of the smaller circumference of the conical jacket, over the jacket.
  • the material of the jacket is compressed.
  • the compression causes a material compaction in the area of the shoulder which increases the stability of the shoulder.
  • a height range of the accommodating mandrel disposed within the conical shell has a constant radius, which supports the shell from the inside when shaping the shoulder.
  • the mantle is deformed to a constant radius when shaping the shoulder in a height range. It can thereby be achieved preferably below the shoulder, a height range of the shell, in which the jacket extends substantially parallel to the central axis of the cup. The forces acting parallel to the central axis when stacking several cups can be very well absorbed and discharged from the shoulder.
  • the jacket does not extend exactly parallel to the central axis in an area below the shoulder.
  • the radius of the shell below the shoulder is preferably 0.05 mm to 0.5 mm, in particular about 0.1 mm to 0.3 mm, smaller than the radius of the shell at the level of the bottom. This makes it possible to achieve a very stable shoulder, in which no cracks occur in the paper material. Below the shoulder, a height range of the shell is then present, in which the angle of the jacket is negative, that is less than zero.
  • the shoulder can also be defined with this definition of the cone angle such that below the shoulder there is a height region of the shell in which the angle of the shell to the central axis is substantially smaller than the angle of the conical shell above the shoulder. This condition is also met by negative cone angles, even though they should be greater in magnitude than the cone angle above the shoulder.
  • the angle of the jacket below the shoulder is less than half of the angle above the shoulder.
  • the distance from the shoulder to the ground is less than 10 mm. The forces occurring during stacking can be absorbed very well by the frame.
  • a height range of the shell is present, are arranged in the parallel to the central axis extending ribs.
  • the ribs can be molded into the mantle as the shoulder forms.
  • the molding tool has recesses extending parallel to the central axis for shaping the shoulder. Since the material is compressed below the shoulder, the recesses in the mold can accommodate a portion of the excess material so that uncontrolled wrinkling of the shape of the shoulder does not occur.
  • the radius of the sheath below the shoulder is more than 0.5 mm, in particular even more than 1 mm, smaller than the radius of the sheath above the shoulder.
  • the radius of the receiving mandrel preferably changes at the shoulder shaping shoulder by more than 0.5 mm, in particular by more than 1 mm.
  • the radius of the mandrel on the shoulder changes by about 1 mm to 1.5 mm.
  • the shoulder has an angle to the central axis of the mandrel of 40 ° to 70 °, in particular from 50 ° to 60 °, to form a shoulder with a high stability.
  • the shaping tool for the shoulder has a means for shaping the curl of the jacket surrounding the bottom.
  • the lower edge of the casing is thus rolled inwards and laid around the wall of the soil at the same time as the shaping of the shoulder.
  • the preparation of the cup according to the invention is thereby considerably facilitated.
  • the molding tool is preferably designed as a ring.
  • the stacking of a similar cup on the shoulder can be done in different ways. It is advantageous that a lower edge of the frame, which forms the base for the cup, is supported during stacking on the shoulder of a similar cup. It is particularly advantageously provided that the casing and / or the bottom in the region of the frame and / or the frame itself at least in an area along the circumference has an outwardly projecting expansion, and that a lower edge of the expansion forms a base for the cup , Preferably, the outer radius of the expansion is greater than the outer radius of the shell at the level of the ground. The base of the cup is enlarged by the expansion, so that the cup has improved stability.
  • the stacking properties of the cup are also improved because the frame is a very stable element of the cup and is very well suited to absorb the forces occurring during stacking.
  • the expansion is formed in a preferred embodiment continuously and uniformly along the circumference.
  • the preparation of the cup is greatly simplified if, during the formation of the frame, the jacket and / or the bottom in the region of the frame and / or the frame itself is widened outwardly at least in a region along the circumference, so that a lower edge of the expansion forms a base for the cup. For the preparation of the expansion then no additional process steps are necessary.
  • the expansion like the shoulder, is a means of holding another cup of the same type. The dimensions of the shoulder and the expansion are adapted to each other to ensure optimal stacking.
  • the cup has a heat-insulating outer jacket.
  • the design of the heat-insulating outer shell is arbitrary per se.
  • the outer sheath can be made for example of a plastic, paper or composite material.
  • the outer sheath can also be corrugated, corrugated, embossed or provided with a foamed layer.
  • a corrugated intermediate layer may be provided, which is covered by a smooth overlying outer layer.
  • the cup can be safely and stably stacked even without the presence of an outer sheath.
  • An optionally provided outer sheath can be made largely independent and free. The outer sheath is not stressed by the forces occurring during stacking, so that no special stability requirements are placed on the outer sheath.
  • One and the same inner cup can be combined in a simple and almost arbitrary manner with a variety of outer shells. Without changing the shape and dimensions of the inner cup or the components forming the interior of the filling, different cups with different visual and haptic appearance can be created, since the appearance that the user of the cup perceives, mainly determined by the design of the outer shell.
  • This design freedom can be assisted by the fact that the outer contour of the outer shell is in a parallel to the inner space bounding shell, which is applied to the expansion of the frame. It is advantageous for a simple production that - after forming a widened frame - a sleeve-shaped preformed outer jacket is pushed in the axial direction on the inner space bounding conical jacket of the inner cup.
  • this is first of a blank, which has the shape of a segment of a circular ring, wound on a mandrel and connected to a frusto-conical sleeve. In the region of the smaller circumference of the outer jacket, an inward curvature is formed.
  • the inwardly directed curl has an area running substantially parallel to the outer jacket.
  • the curl at the bottom of the outer shell can be pressed flat.
  • the lower edge may be slightly retracted, so that at the lower end of the outer shell, a greater conicity is present.
  • the inward curl at the lower end of the outer shell serves to support the outer shell on the inner cup.
  • the curl is supported below the bottom of the frame.
  • the outer shell in the region of the curl has an inner radius which is smaller than the outer radius of the frame at the lower edge of the expansion.
  • Cup 1 shown essentially consists of a conical shell 2 and a cup-shaped bottom 3.
  • the open side of the cup-shaped bottom 3 is arranged so that it faces away from the filling opening of the cup 1.
  • the bottom 3 is connected with its wall 4 in the region of the smaller circumference of the shell 2 liquid-tight with this to form a frame 5.
  • the material of the jacket 2 is wrapped around the wall 4 of the bottom 3 and hammered inwards.
  • the shell 2 and the bottom 3 form a fillable interior 6 of the cup 1.
  • the shell 2 has at its upper edge, ie in the region of the larger circumference, an outwardly beaded mouth roll 7, which surrounds the filling opening.
  • the property "conical" of the shell 2 is understood to mean that the shell 2 in the in FIG. 1 shown longitudinal section of the mouth roll 7 to the bottom 3 at least partially tapers, so at least partially reduced its radius to the central axis 8.
  • the jacket 2 In the lower region of the fillable interior 6, preferably in the lower third, the jacket 2 has a shoulder or bead 9.
  • the jacket 2 has an angle A to the central axis 8.
  • the jacket 2 may have different angles of inclination A in different areas. Over a large area of the interior 6, the angle A is constant.
  • the angle A is defined so that the angle A of the shell 2 between the mouth roll 7 and the shoulder 9 in FIG. 1 has a positive value.
  • An inclination angle A of 0 ° corresponds to a parallel to the central axis 8 extending jacket 2. If the jacket 2 expands towards the base of the cup on, as is the case in the frame 5, the inclination angle A is negative.
  • the frame 5 has at least in an area along its circumference an outwardly projecting widening 10.
  • a lower edge 11 of the expansion 10 on the frame 5 forms the base for the cup 1.
  • the footprint is increased by the expansion 10, so that a tipping over of the cup is difficult.
  • the shoulder 9 is formed by a virtually sudden change in size of the shell 2.
  • the radius B of the shell 2 below the shoulder 9 - seen to the central axis 8 - is about 1 mm to 1.5 mm smaller than the radius C of the shell 2 above the shoulder 9.
  • the cup 1 preferably has a circular cross-section. In this case, the radius of the shell corresponds to half the diameter.
  • the jacket 2 has a very large angle of inclination A, which is about 40 ° to 70 °, and preferably 50 ° to 60 °.
  • the shoulder 9 serves to hold a similar cup 1 'when stacking a plurality of cups 1 and 1', such as this in FIG. 2 is shown.
  • the cup 1 ' which is stacked in the cup 1, is supported by its frame 5' on the shoulder 9 of the cup 1.
  • the radius D of the expansion 10 is adapted to the radius C above the shoulder 9. This ensures that the cup 1 'stably and securely rests on the shoulder 9, but without jamming in the conical jacket 2.
  • the forces that occur when stacking along the central axis 8, for example, the weight forces of the cup 1 'and possibly even stacked cups are safely absorbed by the shoulder 9 and the jacket 2 to the lower edge 11 of the frame 5 of the lower cup. 1 forwarded and released from there to the underground.
  • the shoulder 9 is designed so that the radius B of the shell 2 below the shoulder is at most equal to the radius E of the shell 2 at the level of the bottom 3.
  • the outside of the casing 2 measured radius B 'and E' could be compared.
  • a height range F of the jacket 2 is present, in which the angle A of the jacket 2 deviates from the angle A of the conical jacket above the shoulder 9.
  • the height range F extends from the shoulder 9 to the bottom 3. In order to achieve a good stability of the height range F, it has proven to be advantageous not to make the height range F greater than 10 mm.
  • the jacket 2 extends substantially parallel to the central axis 8. This is advantageous in order to achieve a good transfer of the forces occurring during stacking from the shoulder 9 to the frame 5.
  • FIGS. 3A to 3D are different advantageous variants of the design of the height range F below the shoulder 9 shown enlarged.
  • FIG. 3A extends the mantle 2 in the height range F exactly parallel to the central axis 8.
  • the radius C of the shell below the shoulder is thus the same size as the radius E of the shell at the level of the bottom 3.
  • the radius B below the shoulder 9 is smaller than the radius E at the level of the bottom 3.
  • the radius B is preferably about 0.15 mm to 0.2 mm smaller than the radius E.
  • the radius B is a few tenths of a millimeter smaller than is the radius E, can be at a constant radius C above the shoulder 9, the width of the shoulder 9 increase.
  • the shoulder 9 can be a significant increase in stability of the shoulder 9 when stacking several cups 1, 1 'reach.
  • the height range F is divided into two areas.
  • the mantle 2 extends parallel to the central axis 8.
  • the inclination angle A of the shell 2 is negative, here the coat 2 widens towards the bottom 3.
  • the angle A is positive, but substantially smaller than the angle A of the conical jacket 2 above the shoulder 9.
  • the angle A in the height range F' is preferred less than half of the angle A of the conical jacket 2 above the shoulder. 9
  • FIG. 3D an embodiment is shown in which the jacket 2 has a negative angle over the entire height range F.
  • the jacket 2 thus has a reverse conicity in the height region F in comparison to the jacket above the shoulder 9.
  • the inclination angle A of the jacket 2 in the height range F below the shoulder 9 is substantially smaller than the angle A of the conical jacket 2 above the shoulder 9.
  • the cup 1 may be advantageous to assign the cup 1 an outer sheath which surrounds the inner space 6 limiting sheath 2 preferably to form a cavity. So that the stacking of the cup 1 is not impaired, it may be advantageous for the outer contour of the outer casing to be located within a parallelism 12 to the casing 2 delimiting the inner space 6, the parallel 12 being applied to the widening 10 of the frame 5. As long as an outer sheath is located within the space between the parallels 12 and the sheath 2 bounding the inner space 6, the stacking properties of the cup are in no way affected. The freedom of design for the outer shell are thus almost no limits. In addition, it is possible to provide a common embodiment of the cup 1 with different outer shells, without having to change the stacking essential shoulder 9 and the expansion 10. Below are with the help of FIGS. 4 and 5 some possible embodiments for such outer shells described.
  • Each of the cups 1 shown has a heat-insulating outer jacket 13, which partially surrounds the jacket 2 bounding the interior 6 to form a cavity 14.
  • Such cups are also called double-walled Isolierbecher referred to, in which the coat 2 located within the outer shell 13 can also be referred to as "inner cup” in connection with the bottom 3.
  • the inner cup, in particular with the shoulder 9, are each analogous to those in the FIGS. 1 to 3 designed variants, so that can be dispensed with a repeated description.
  • the outer jacket 13 of in FIG. 4 Cup 1 shown is arranged substantially parallel to the inner space 6 limiting shell 2.
  • the outer shell 13 has at an upper and at a lower end in each case an inwardly directed curl 15 and 16 and is supported by the curls 15 and 16 on which the jacket 2 from.
  • the outer casing 13 is fixed in the region of the curl 15 and / or 16, for example by gluing.
  • the curl 16 is supported in the region of the frame 5 and thus below the horizontal bottom 3 on the inner casing 2, whereby the outer casing 13 is very stable.
  • the inner radius P of the curl 16 is therefore smaller than the radius D of the widening 10.
  • the outer casing 13 also covers the shoulder 9 so that it is not recognizable from the outside.
  • the curl 16 has a region 17 extending parallel to the outer casing 13.
  • the region 17 extends close to the inside of the outer shell 13 and can also rest there.
  • the radius G at the upper edge 35 of the parallel to the outer shell 13 extending portion 17 is greater than the radius D of the expansion 10 on the frame 5.
  • FIG. 5 has the shell 2 in the area below the mouth roll 7, a second shoulder 18, which is seen from the bottom 3 to the mouth roll 7 as a sudden cross-sectional enlargement.
  • the outer jacket 13 is in the area between the mouth roll 7 and the shoulder 18 with the inner space 6 limiting coat 2, for example, by sealing or gluing, connected.
  • the outer jacket 13 has an inwardly directed curl 16, which also has a region 17 extending parallel to the outer jacket 13.
  • the curl 16 is supported below the bottom 3 on the frame 5 from.
  • the curl 16 is in contrast to FIG. 4 flattened and slightly retracted at the lower edge portion 19 so that there is a greater taper of the outer shell 13 is present.
  • the radius P is smaller than the radius D, while the radius G is greater than the radius D.
  • FIG. 5A An advantageous modification of the cup 1 in the region of the upper shoulder 18 is in FIG. 5A shown greatly enlarged.
  • the area of the shell 2 which lies between the mouth roll 7 and the shoulder 18 has a different angle of inclination than the shell 2 between the shoulder 18 and the shoulder 9 up.
  • FIG. 5A extends the shell 2 between the mandrel 7 and the shoulder 18 approximately parallel to the central axis 8.
  • the outer shell 13 can be pushed a little below the mouth roll 7 when pushed onto the inner cup, the upper edge portion 20 of the outer shell 13 is slightly retracted.
  • the edge region 20 thus does not continue the conical outer casing 13 uniformly but has a different angle to the central axis 8. If the outer jacket 13, as in FIG.
  • the result is a particularly good appearance of the cup 1, since the upper edge of the outer shell 13 is no longer visible. If the outer sheath 13 is pushed further into the mouth roll 7 in an unillustrated embodiment, the clamping of the outer sheath 13 by the material of the mouth roll 7 causes a fixation of the outer sheath 13. For certain applications, the clamping of the outer sheath 13 in the mouth roll 7 as only attachment of the outer jacket 13 may be sufficient.
  • a conical jacket 2 and an approximately cup-shaped bottom 3 are formed.
  • the jacket 2 which later forms the interior 6, initially the shape of a conical sleeve.
  • the bottom 3 has the shape of a truncated cone, which tapers parallel to the sleeve 2.
  • the bottom 3 and the jacket 2 are not yet connected to each other, but only inserted into each other.
  • Jacket 2 is attached to a receiving mandrel 21, which has a frustoconical shape in a first height range H, in which the angle of inclination of the peripheral surface corresponds to the angle A of the jacket 2 to the central axis 8.
  • the tapered end of the frusto-conical region H is followed by a shoulder 22 for forming a shoulder 9 in the jacket 2.
  • the paragraph 22 has a greater inclination angle A than the height range H, wherein the angle A of the shoulder 22 is preferably 50 ° to 60 ° and is selected according to the desired inclination angle of the shoulder 9 on the cup 9.
  • the section 22 is adjoined by a region J in which the radius K of the receiving mandrel 21, viewed in relation to the central axis 8 of the receiving mandrel, is smaller than the outer radius E of the cup bottom 3 and preferably remains constant over the height J.
  • the radius of the receiving mandrel 21 changes at the shoulder 22 by more than 1 mm, in particular by 1 mm to 1.5 mm.
  • the radius K is smaller by a few tenths of a millimeter, in particular about 0.15 to 0.2 mm, than the radius E.
  • a mold 23 the bottom of FIG. 6 is shown and that is movable along the central axis 8 of the mandrel 21.
  • the mold 23 is moved in the direction of arrow L on the mandrel 21.
  • the molding tool 23 has a surface 24 which essentially corresponds in its angle to the central axis 8 to the angle of inclination A of the shoulder 22.
  • the mold also has a surface 25 whose radius M is matched to the radius K of the mandrel 21 and the thickness of the paper material of the shell 2.
  • the radius M can be chosen even smaller than the radius E of the bottom 3.
  • the sleeve 2 is thus clamped between the mandrel 21 and the mold 23, so that between the surface 24 and the shoulder 22, the shoulder 9 is formed. Since the bottom 3 and the shell 2 are not yet connected to each other by sealing or gluing, the shell 2 can be compressed to form the shoulder 9 stronger than would be possible with already connected shell 2 and bottom 3.
  • the radius E of the bottom 3 which is already inside the shell 2, is reduced in the elastic region by compression.
  • the bottom 3 reduces its radius E so that the radius K of the mandrel 21.
  • FIGS. 7A and 7B are top views of two different variants of the mandrel 21 shown.
  • the in FIG. 7A shown receiving mandrel 21 is used to form a shoulder 9, which rotates along the entire circumference of the shell 2.
  • the paragraph 22 is therefore designed as a peripheral surface of a truncated cone.
  • the shoulder 22 is adjoined by a cylindrical region J, which has the radius K.
  • the cooperating with the shoulder 22 during the molding of the shoulder 9 surface 24 of the mold 23 is also configured in this case as a frustoconical surface.
  • the surface 25 of the mold, which encloses the region J below the shoulder 22, is designed as a cylindrical surface, as in the view of FIG. 8 is recognizable.
  • Such an embodiment of the device for producing the cup 1 with a circumferential shoulder 9 around the entire circumference is simple and allows the production of a very stable shoulder. 9
  • FIG. 7B an alternative embodiment of a mandrel 21 'is shown, with the three separate shoulders along the cup circumference can be formed. Such an embodiment may also be advantageous for particular applications, since the stresses of the paper material of the shell 2 in the formation of separate shoulders depending on the used paper material is more advantageous.
  • the mandrel 21 ' are three paragraphs 22' distributed uniformly along the circumference. In the region of each shoulder 22 ', a height range J is present, which has a radius K to the central axis 8 and is used to form one shoulder each.
  • the forming mandrel 21 'associated mold is not shown. This in FIG. 6 shown mold 23 is in the area of the surfaces 24 and 25 on the design of paragraphs 22 'of the mandrel 21' adapt.
  • the paper material of the shell 2 is compressed when pushing the mold 23 in the region J to a smaller radius.
  • the recesses 26 are in the FIGS. 6 and 8th dashed to interpreted.
  • the formed by the recesses 26 ribs 27 are on the finished cup 1 in FIG. 1 indicated by dashed lines.
  • the ribs 27 cause an additional stiffening of the height range F below the shoulder 9 and can further improve the stacking properties of the cup 1.
  • the jacket 2 can be connected to the bottom 3 under the formation of the frame 5, the lower end 28 of the shell 2 is turned over so that it in FIG. 6 Dashed line 30 shown assumes position.
  • the molding tool 23 has a means 29 for forming a curl 30 surrounding the base 3 of the shell 2.
  • the means 29 for curling the shell 2 is designed as a groove-shaped area, which in the sectional view of the mold 23 in FIG. 6 is shown only in sections, but extends over 360 °.
  • the simultaneous turning over of the lower edge 28 of the shell 2 with the shaping of the shoulder 9 facilitates the production of the cup according to the invention considerably.
  • the jacket 2 is wound from a segment of a circular ring over a mandrel and then glued or sealed along a longitudinal seam.
  • the longitudinal seam of the jacket 2 in the region of the lower end 28 can not be glued or sealed.
  • This area is in the presentation of the FIG. 6 denoted by N. If the longitudinal seam in the area N is not glued or sealed, the jacket 2 can deform more freely when the lower end 28 is folded over, and corrugation of the paper material, which in principle is difficult to deform, is avoided.
  • the region N may extend from the lower edge 28 of the shell even to the lower edge of the bottom 3, as in the FIG. 6 is indicated by the reference N '.
  • the length of the region N or N ' is thus variable and can be changed according to the requirements.
  • the bottom 3 is connected to the shell 2 to form a frame 5 substantially liquid-tight to finish the inner cup 1 in a subsequent process step.
  • This is done with the help of an outer ring and an inner tool, wherein at the same time when connecting the bottom 3 with the jacket 2, the frame 5 is widened so that the in FIG. 1 shown, to the lower edge 11 towards expanding shape of the frame 5 results.
  • FIG. 9 a further embodiment of the invention is shown, wherein, in contrast to the embodiment of the FIG. 6 the shell 2 'has an initially conical shape, which then merges with the horizontal bottom 3' into a cylindrical shape.
  • the bottom 3 'in this embodiment has an inverted cup shape with a cylindrical peripheral wall 4'.
  • both the design of the receiving mandrel 21 and the mold 23 are in accordance with the already explanatory shaping FIG. 6 identical. Due to the cylindrical preforming of the peripheral wall 4 'of the bottom 3' and the likewise cylindrical preforming of the lower portion of the shell 2 ', the wrinkling during the folding of the lower edge 28' of the shell 2 'and in the subsequent expansion and forming of the frame 5 is reduced.
  • FIG. 10 the process step of forming the frame 5, which is arranged downstream of the shaping of the shoulder 9, is described.
  • Initial state is the in FIG. 9 shown in phantom 30 ', which results after the folding of the lower end 28' of the shell 2 '.
  • the angle A of the shoulder 9 substantially corresponds to the angle of inclination of the shoulder 22.
  • the radius B below the shoulder 9 slightly increases compared to the radius K of the mandrel 21 when removing the molding tool 23.
  • the jacket 2 is compressed by the surface 25 of the molding tool 23 so far that the jacket rests in the region J of the receiving mandrel 21.
  • FIG. 10 To form the frame 5 with the expansion 10 is in FIG. 10 an outer ring 31 and inner jaws 32 are provided. A jacket 2 facing the inner surface of the outer ring 31 is exposed to the outside and has the angle that the frame 5 should take in the final state. Opposite the outer ring a plurality of inner jaws 32 are provided, wherein in the illustration of FIG. 10 only an inner jaw is shown. The inner jaws 32 may in the representation of FIG. 10 are moved toward the outside, in the direction of the outer ring 31 and thereby press the curl 30 'against the wall 4 of the bottom 3 and finally against the inner surface of the outer ring 31st
  • a radially outwardly facing surface of the inner jaw 32 is arranged parallel to the inner surface of the outer ring 31 and also has the angle at which the frame 5 should be arranged in the final state.
  • the inner jaws 32 for example, part of a mandrel, not shown, and can by moving a likewise in FIG. 10 not shown middle part are moved radially outward.
  • the outer ring 31 may be formed as a solid ring or, for example, as an openable ring to facilitate the pushing down of the finished sealed frame 5.
  • a circumferential roller can be provided, which exert a radially outward, directed toward the inner surface of the outer ring 31 force on the curl 30 'to form the frame 5.
  • FIGS. 4 and 5 On the thus finished inner cup 1 is then, see FIGS. 4 and 5 , an outer jacket 13 pushed. This takes place in such a way that the outer jacket 13 is received in an annular outer tool, and by the tapered end of the outer shell 13 a Pilot mandrel is pushed with a suction head.
  • the inner cup 1 is inserted into the outer casing 13.
  • the suction head engages on the inner cup 1 from below to the bottom 3, sucks on this and pulls the inner cup in the tapered outer shell 13 into until the in the FIGS. 4 and 5 shown state is reached.
  • a flat blank which has the shape of a segment of a circular ring, wound on a mandrel and connected to a frusto-conical sleeve in the region of the lower tapered end is then according to FIG. 11 initially a curl 33 preformed.
  • This curl 33 represents a precursor of the curl 20, as shown in the FIGS. 4 and 5 is shown.
  • cup 1 shown the curl 33 is then pressed flat until the in FIG. 12 shown form of curl is reached. It will be appreciated that the lower edge 19 of the outer jacket 13 formed by the curl 16 is slightly retracted and therefore has a greater taper at the lower end, as previously discussed.
  • the FIG. 12 the lower edge 19 of the outer jacket 13 formed by the curl 16 is slightly retracted and therefore has a greater taper at the lower end, as previously discussed.
  • FIG. 12 is on the inside of the curl 20 a knurling or corrugation 34 indicated.
  • a knurling or corrugation 34 on the inside of the curl 20 can be provided in order to achieve a higher elasticity when pushing the outer shell 13 onto the inner cup 1.
  • FIG. 12 the parallel to the outer casing 13 extending portion 17 of the curl 20 recognizable.
  • FIG. 11 precursor 33 shown a curl 16 according to FIG. 4 manufacture, only the area 17 is applied in parallel to the outer jacket 13, wherein a further flat pressing is omitted.
  • the inner radius P of the outer shell 13 is formed smaller than the radius D of the expansion 10. This is already in the presentation of FIGS. 4 and 5 to recognize.
  • the end of the outer sheath 13 with the curl 16 must therefore expand slightly in order to be pushed over the frame 5 can. This expansion is facilitated by the knurling or corrugation 34.
  • the longitudinal seam of the outer shell 13 in the region of the curl 16 can not be glued or sealed. As a result, a certain rising of the outer sheath 13 in the region of the curl 16 is facilitated, so that the outer sheath 13 contracts again after being pushed over the frame 5; so that the curl 16 in the in FIG. 5 shown position securely abuts the outside of the frame 5 and is supported there.
  • a radius G at the upper end 35 of the parallel portion 17 is greater than the outer radius D of the frame 5.
  • FIG. 5 refers to. Since thus the Inner diameter of the outer jacket 13 at the upper edge 35 of the curl 16 is greater than the outer diameter of the expansion 10, this upper edge 35 of the curl 16 can not catch on the frame 5 when pushed onto the frame 5. Instead, the frame 5 runs on the slope, which is formed by the area 17 and upon further pushing the outer shell 13 of this is widened, slips over the area with the largest radius D of the frame 5 and then takes the in FIG. 5 shown position. Obviously, the outer sheath 13 is then held by the residual stress in the outer jacket 13 on the inner cup 1, since to remove the outer shell 13 of this again on the conically widening frame 5 would have to be pulled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stackable Containers (AREA)
  • Packages (AREA)
  • Making Paper Articles (AREA)
  • Table Devices Or Equipment (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP09704582.7A 2008-01-21 2009-01-20 Becher aus einem papiermaterial und verfahren und vorrichtung zum herstellen Active EP2238046B1 (de)

Priority Applications (1)

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PL09704582T PL2238046T3 (pl) 2008-01-21 2009-01-20 Kubek z materiału papierowego oraz sposób i urządzenie do jego wytwarzania

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DE102008005403A DE102008005403A1 (de) 2008-01-21 2008-01-21 Becher aus einem Papiermaterial
PCT/EP2009/000316 WO2009092557A1 (de) 2008-01-21 2009-01-20 Becher aus einem papiermaterial und verfahren und vorrichtung zum herstellen

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EP2238046A1 EP2238046A1 (de) 2010-10-13
EP2238046B1 true EP2238046B1 (de) 2014-05-21

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EP (2) EP2238046B1 (ja)
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CN (2) CN101970310B (ja)
AU (2) AU2008264158B2 (ja)
BR (2) BRPI0907410B8 (ja)
CA (1) CA2706374C (ja)
DE (1) DE102008005403A1 (ja)
EA (1) EA017796B1 (ja)
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PL (2) PL2238046T3 (ja)
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CN101492107B (zh) 2012-07-04
JP5599976B2 (ja) 2014-10-01
PL2080715T3 (pl) 2012-11-30
CA2706374C (en) 2015-10-06
EA200900031A1 (ru) 2009-08-28
EP2080715B1 (de) 2012-06-20
PL2238046T3 (pl) 2014-10-31
US20110281704A1 (en) 2011-11-17
BRPI0900078B1 (pt) 2019-11-05
CA2706374A1 (en) 2009-07-30
MX2009000098A (es) 2009-08-28
US9260220B2 (en) 2016-02-16
BRPI0907410B1 (pt) 2019-04-09
AU2008264158B2 (en) 2014-11-20
EP2080715A1 (de) 2009-07-22
AU2009207838B2 (en) 2013-05-16
JP2009173346A (ja) 2009-08-06
EP2238046A1 (de) 2010-10-13
AU2008264158A1 (en) 2009-08-06
US20140216972A1 (en) 2014-08-07
CN101970310B (zh) 2014-10-29
DE102008005403A1 (de) 2009-07-23
RU2502659C2 (ru) 2013-12-27
WO2009092557A1 (de) 2009-07-30
BRPI0907410B8 (pt) 2020-08-11
AU2009207838A1 (en) 2009-07-30
US8727206B2 (en) 2014-05-20
CN101492107A (zh) 2009-07-29
EP2080715B2 (de) 2021-06-30
ES2387598T3 (es) 2012-09-27
RU2010133173A (ru) 2012-02-27
US20090184020A1 (en) 2009-07-23
BRPI0907410A2 (pt) 2015-07-21
US9238524B2 (en) 2016-01-19
BRPI0900078A2 (pt) 2009-09-15
CN101970310A (zh) 2011-02-09
EA017796B1 (ru) 2013-03-29

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