(19)
(11)EP 3 464 083 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
04.12.2019 Bulletin 2019/49

(21)Application number: 17724177.5

(22)Date of filing:  04.05.2017
(51)Int. Cl.: 
B65D 3/22  (2006.01)
B65D 81/38  (2006.01)
(86)International application number:
PCT/US2017/031009
(87)International publication number:
WO 2017/205025 (30.11.2017 Gazette  2017/48)

(54)

PROCESS AND APPARATUS FOR FORMING OVERWRAP CONTAINER USING CLAMPING AND REFORMING

VERFAHREN UND VORRICHTUNG ZUR FORMUNG EINES UMVERPACKUNGSBEHÄLTERS UNTER VERWENDUNG VON KLEMMUNG UND REFORMIERUNG

PROCESSUS ET APPAREIL DE FORMATION D'UN RÉCIPIENT DE SUREMBALLAGE PAR PINCEMENT ET REFAÇONNAGE


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 24.05.2016 US 201662340730 P
30.06.2016 US 201662356630 P

(43)Date of publication of application:
10.04.2019 Bulletin 2019/15

(73)Proprietor: Paper Machinery Corporation
Milwaukee, WI 53224 (US)

(72)Inventors:
  • MORGAN, Mark, J.
    Menomonee Falls, WI 53051-6072 (US)
  • KAZMIERSKI, Michael, S.
    Cudahy, WI 53110 (US)
  • WILSON, Ronald, J.
    Kewauskum, WI 53040 (US)

(74)Representative: Somervell, Thomas Richard 
Marks & Clerk LLP Alpha Tower Suffolk Street Queensway
Birmingham B1 1TT
Birmingham B1 1TT (GB)


(56)References cited: : 
DE-U1-202004 005 114
JP-A- 2000 142 834
JP-A- H0 465 232
JP-A- 2000 142 835
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    CROSS-REFERENCE TO RELATED APPLICATIONS



    [0001] The present utility application relates to and claims priority to U.S. Provisional Application No. 62/340,730 filed May 24, 2016 and U.S. Provisional Application No. 62/356,630 filed June 30, 2016.

    FIELD



    [0002] The present disclosure relates generally to thermally insulated containers, including cups, for storing hot and cold beverages and other consumable food products. More particularly, the present disclosure pertains to thermally insulated containers wherein the container or cup is configured with a double wall construction, and wherein an air gap is provided between the individual walls of the double wall construction.

    BACKGROUND



    [0003] The Assignee of the instant application, Paper Machinery Corporation of Milwaukee, Wisconsin U.S.A. is the manufacturer of paper cup making machines used to make a variety of cups and containers. A typical cup machine for making paper cups, for instance, includes a turret having a plurality of mandrels about which the containers are formed. The turret sequentially rotates the mandrels into cooperation with a variety of work stations where numerous cup forming procedures occur.

    [0004] In an exemplary procedure, a circular bottom blank is cut out at one work station and attached to the end of a mandrel by a vacuum applied through the mandrel. During this procedure, the outside lip of the bottom blank is folded downwardly. At a subsequent work station, a side wall blank is wrapped around a mandrel. The side wall blank is heated and sealed using a seam clamp along an overlapped side seam which runs generally longitudinally along the side of the cup. Typically, a paperboard or solid plastic sheet is coated with a thermoplastic such as polyethylene, so the bottom and side wall blanks may be heated and sealed together. In some applications, the side wall blank extends beyond the lip of the bottom blank, and this flap is bent over the lip. At a bottom finishing station, the flap is pressed against the lip from an inside recessed area of the bottom of the cup. By heating the polyethylene and firmly pressing the side wall flap and the bottom blank lip together, a bottom seal is formed and the cup is provided with a sturdy bottom region having a recessed area. There may also be other work stations where various other additional cup forming procedures are carried out. For example, one station may be used to provide a curl at the top or rim of the cup to provide a more functional drinking container and a better appearance.

    [0005] Cups and containers produced according to the procedure outlined above typically do not have the ability to keep beverages and food products stored therein warm and, at the same time, protect the hand from becoming uncomfortable from holding a hot liquid or material. Similarly, such cups and containers do not have the ability to insulate a cold beverage or products and protect the exterior of the cold container from moisture condensation that may pool on the bottom of the container.

    [0006] Many cups and containers have been produced with sleeves, overwraps or laminates to provide a thermally insulated double walled cup or container with an air gap between inner and outer walls to create hand-held protection in addition to heat and cold retention in the beverage or food product contained therein.

    [0007] In development of the present disclosure, the inventors have discovered difficulties arise in creating a desired air gap between the inner and outer walls of the container. For example, it has been found that when applying an overwrap around a base cup or container, the air gap is substantially eliminated in the seam area formed by the overlapping opposite edges of the overwrap as well as the area 180° removed for the overwrap seam area. This is due to the mechanical clamping which normally occurs during formation of the overwrap container. Such anomaly leads to the formation of a zone opposite the overwrap seam which can make the container or cup uncomfortable or inconvenient to hold relative to the remainder of the holding surface of the container or cup when filled with hot or cold contents.

    [0008] Accordingly, there remains a need to provide a double walled insulated container which overcomes the shortcomings of previous designs, and creates an overwrap container with a more uniform air gap between the inner and outer walls of the container when measured away from the overwrap seam so as to ensure comfort of the holder of the overwrap container substantially around its outer periphery. In addition, it is desirable to provide a method of and an apparatus for forming such an overwrap container.

    SUMMARY



    [0009] The present invention relates to a method for forming an overwrap container. The method includes the steps of a) providing a base container having a first side seam on a side wall that extends along a longitudinal axis to define an internal volume, and a bottom secured to the side wall; b) providing the side wall of the base container with connecting elements around an outer periphery of the side wall; c) providing an overwrap having a second side seam over the side wall of the base container such that the overwrap is joined in spaced apart relationship by the connecting elements to the side wall of the base container; d) clamping the overwrap to the base container along the second side seam to form a first compressed area; e) clamping the overwrap to the base container in an area 180° removed from the second side seam to form a second compressed area; and f) reforming the second compressed area to define an overwrap container having a substantially uniform spacing and air gap between the base container and the overwrap except in the first compressed area.

    [0010] The present invention also relates to an apparatus for producing an overwrap container. The apparatus includes a first mechanized arrangement configured to provide a base container having a side wall and a bottom connected thereto, the sidewall being formed with a first side seam extending longitudinally thereof. A second mechanized arrangement is connected with the first mechanized arrangement and is configured to provide a set of connecting elements on the side wall of the base container, and is configured to position an overwrap having a second side seam around the side wall of the base container such that the side wall of the base container is joined in spaced apart relationship to the overwrap. The second mechanized arrangement includes clamping apparatus configured to clamp the overwrap to the base container along the second side seam to form a first compressed area, and to clamp the overwrap to the base container in an area 180° removed from the second side seam to form a second compressed area. The second mechanized arrangement further includes a reforming arrangement reforming the second compressed area to define an overwrap container having a substantially uniform spacing and air gap between the overwrap and the base container except in the first compressed area.

    [0011] The present disclosure further relates to a method for forming an overwrap container. The method includes the steps of a) providing a base container having a first side seam on a side wall that extends along a longitudinal axis to define an internal volume, and a bottom secured to the side wall; b) providing the side wall of the base container with connecting elements around an outer periphery of the side wall except for an adhesive-free area at a location along the side wall of the base container reserved for clamping; c) providing an overwrap having a second side seam over the side wall of the base container such that the second side seam is in an area 180° removed from the adhesive-free area, and such that the overwrap is joined in spaced apart relationship by the connecting elements to the side wall of the base container except in the adhesive-free area along the side wall of the base container; d) clamping the overwrap to the base container along the second side seam to form a first compressed area; e) clamping the overwrap to the base container in the area 180° removed from the second side seam and coextensive with the adhesive-free area to form a second compressed area; and f) reforming the second compressed area to define an overwrap container having a substantially uniform spacing and air gap between the base container and the overwrap except in the first compressed area.

    [0012] The present disclosure additionally relates to an apparatus for producing an overwrap container. The apparatus includes a first mechanized arrangement configured to provide a base container having a side wall and a bottom connected thereto, the sidewall being formed with a first side seam extending longitudinally thereof. A second mechanized arrangement is connected with the first mechanized arrangement and is configured to provide a set of connecting elements on the side wall of the base container except for an adhesive-free area at a location along the side wall of the base container reserved for clamping, and is configured to position an overwrap having a second side seam around the side wall of the base container such that the second side seam is in an area 180° removed from the adhesive-free area, and such that the side wall of the base container is joined in spaced apart relationship to the overwrap except in the adhesive-free area along the side wall of the base container. The second mechanized arrangement includes clamping apparatus configured to clamp the overwrap to the base container along the second side seam to form a first compressed area, and to clamp the overwrap to the base container in the area 180° removed from the second side seam and coextensive with the adhesive-free area to form a second compressed area. The second mechanized arrangement further includes a reforming arrangement reforming the second compressed area to define an overwrap container having a substantially uniform spacing and air gap between the overwrap and the base container except in the first compressed area.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0013] The drawings illustrate the best mode presently contemplated of carrying out the disclosure.

    [0014] In the drawings:

    Figure 1 is a schematic plan view of a cup making machine for making a base container or cup forming part of an overwrap container.

    Figure 2 is a bottom perspective view of a base container or cup produced from the machine shown in Figure 1.

    Figure 3 is a sectional view taken on line 3-3 of Figure 2.

    Figure 4 is a schematic plan view of a cup making machine for applying adhesive elements to the base container or cup and for applying an overwrap thereto.

    Figure 5 is a view similar to Figure 2 showing adhesive elements applied to the base container or cup.

    Figure 5A is a view similar to Figure 5 showing another embodiment of an overwrap container.

    Figure 6 is a view showing an overwrap about to be placed and secured around the base container or cup.

    Figure 6A is a view similar to Figure 6 showing the embodiment of Figure 5A.

    Figure 7 is a bottom perspective view of a finished overwrap container.

    Figure 8 is a sectional view taken on line 8-8 of Figure 7 showing the adhesive elements between the base container or cup and the overwrap.

    Figure 9 is a bottom view of a finished overwrap container showing no air gap between the inner and outer walls of the overwrap container at the compressed areas of the overwrap seam and an area diametrically opposed therefrom, and a varying air gap between these compressed areas.

    Figure 10 is a bottom view of a finished overwrap container showing a substantially uniform air gap between the inner and outer walls of the overwrap container except for the compressed overwrap seam area of the overwrap container.


    DETAILED DESCRIPTION OF THE DRAWINGS



    [0015] In the present description, certain terms have been used for brevity, clearness and understanding. No unnecessary limitations are to be applied therefrom beyond the requirement of the prior art because such terms are used for descriptive purposes only and are intended to be broadly construed.

    [0016] Referring generally to Figure 1, an exemplary cup making machine or apparatus 10 is illustrated. This particular design includes a mandrel turret 12 which cooperates with a transfer turret 14 and a rimming turret 16. Mandrel turret 12 includes a plurality of frusto-conical mandrels 18 that are rotated in a stepwise or indexing manner between surrounding work stations. For example, a bottom blank may be applied to a given mandrel 18 at a bottom maker station 20 and then rotated to a bottom reformer station 22. From this point, the mandrel 18 is rotated into cooperation with the transfer turret 14 which receives generally trapezoidally shaped side wall blanks from a hopper 24, and rotates each side wall blank into cooperation with the cooperating mandrel 18. The side wall blank is then folded about the mandrel 18 over the bottom blank, heated and sealed along a seam.

    [0017] Next, the bottom blank and the side wall blank are rotated to a bottom heat station 26. After heating, mandrel turret 12 indexes the subject mandrel 18 to a roller incurl station 28 where a portion of the side wall blank, i.e. a side wall blank flap, is bent over an outer lip of the bottom blank to form a recessed bottom in the cup. The cup is then moved to a bottom finishing station 30 where the side wall blank flap and the bottom blank lip are pressed against the lower region of the side wall blank to form a seal.

    [0018] Once the bottom is formed and sealed, the cup is transferred to rimming turret 16 and rotated to a lube station 32 and then to a rimming precurl station 34 where the upper lip of the side wall is curled outwardly. From that station, the cup is indexed to a rimming finish curl station 36 which finishes the curled portion along the top of the cup to make an attractive edge. At this point, the cup may be moved to an optional lid groover station 38 and then to a cup blowout station 40 for removal of the finished cup depicted in Figure 2 as a base container or cup 42 with a side wall 42A that extends about a longitudinal axis to define an internal volume.

    [0019] The base container or cup 42 includes an upper region 44 having a curled rim 46 and a bottom region 48. Cup 42 is made from a side wall blank 50 disposed generally transverse thereto. A bottom blank 52 is typically bent or folded over in proximity to its outer edge to form a lip 54. The side wall blank 50 is located with respect to bottom blank 52 so that a flap portion 56 extends beyond lip 54. Flap portion 56 is bent or folded around lip 54 so lip 54 may be squeezed between flap portion 56 and a lower portion 57 of side wall blank 50 (see Figure 3).

    [0020] The base container or cup 42 is typically made from paperboard blanks having a thermoplastic coating such as polyethylene. The thermoplastic material permits heating and sealing of adjacent components. For example, when side wall blank 50 is wrapped around bottom blank 52, the adjacent edges are heated and pressed together along a base cup seam 58. The cup making machine 10 has the ability to create cups 42 with either a left over right seam or a right over left seam. Similarly, lip 54, flap portion 56 and lower portion 57 of side wall blank 50 may be heated and pressed together at bottom finishing station 30 to form a strong, leak-proof bottom region 48. By forming base cup 42 as illustrated in Figure 3, a recessed area 60 is created in the bottom of cup 42 on an opposite side of blank 52 from the main container region of cup 42. Recessed area 60 in the bottom of the cup permits insertion of a tool to press lip 54 and flap portion 56 towards the lower region 57 of side wall blank 50.

    [0021] Referring now to Figure 4, the base container or cup 42 is then transferred from the first machine apparatus 10 to a feeder 62 on a second machine or apparatus 64. The cup feeder 62 is aligned with a rotatable mandrel turret 66 which includes a plurality of rotary mandrels 68 that are rotated or indexed in a stepwise manner clockwise about a vertical axis to various rotary positions. For example, the finished base container or cup 42 is transferred by the cup feeder 62 onto a mandrel 68. Then the turret 66 is indexed one step to the representative rotary position at 70 where the base container 42 is rotated on the mandrel 68 about an axis perpendicular to the vertical turret axis. At this position, a plurality of spaced apart adhesive elements (such as shown in 74 in Figure 5) are applied on and at least partially around the outer surface of the side wall 42A of the base container or cup 42. In a typical application, the adhesive elements 74 take the form of a heated glue applied by a radial glue apparatus 75 in elongated beads or ribs which when applied to the basic container 42 protrude outwardly therefrom and extend generally parallel to each other in equally spaced apart relationship. The adhesive elements 74 may take other forms and configurations.

    [0022] Once the adhesive elements 74, have been applied, the base container or cup 42 is indexed clockwise to a position at 96 at which a pre-glued overwrap (seen at 98 in Figure 6) is applied completely around the base container or cup 42 and pressed by a lower clamp 99. The overwrap 98 is a blank formed typically of paperboard, shaped similarly to and sized slightly larger than the side wall blank 50 used in forming the base container or cup 50. The overwrap 98 is sized so that it lies between a top edge and a bottom edge of the base container 42. More particularly, the overwrap 98 has opposite side edges 98a, 98b one of which is provided by an applicator 100 along its length with an adhesive 102. The overwrap 98 is applied around the side wall 42A of the base container or cup 42 so that the inside surface of the overwrap 98 is connected to and spaced from the outside surface of the base container or cup 42 by means of the adhesive elements 74. At the same time, the edges 98a, 98b of the overwrap 98 are overlapped and joined or sealed together by the adhesive 102 to form an overwrap side seam 104. In the formation of the overwrap container, it is not necessary that the base cup seam 58 is aligned with the overwrap side seam 104. The forming of the overwrap side seam 104 is made possible by a servo driven seam clamp 106 which applies a pressing or clamping force along the seam 104.

    [0023] Figure 9 illustrates an end view of the overwrap container being formed and shows that the overwrap seam 104 has been compressed against the base cup 42 at a 12 o'clock position so that there is no air gap between the overwrap 98 and the base cup 42 at this position. In addition, at the 6 o'clock position (substantially 180° removed from the overwrap seam area), the lower clamp 99 has compressed the overwrap 98 against the base cup 42 to further create no air gap therebetween. Further, it can be seen that a varying air gap 109 is created between the overwrap 98 and the base cup 42 between the 12 o'clock - 6 o'clock and 6 o'clock - 12 o'clock sectors.

    [0024] In an effort to create a more substantially uniform air gap between the overwrap 98 and the base cup 42 outside the compressed area of the overwrap seam 104 and the base cup 42, the present disclosure contemplates restoring or reestablishing the air gap at the 6 o'clock position. Accordingly, the overwrap 98 joined to the base cup 42 is indexed by turret 66 to a reforming arrangement in the exemplary form of a vacuum reformer 107 which acts to reform such as by applying vacuum to separate the overwrap 98 from the base cup 42 at the 6 o'clock position. As a result, a substantially uniform air gap 114 is created as seen in Figure 10 between the overwrap 98 and the base cup 42 except in the overwrap seam area at 104.

    [0025] The present disclosure envisions that the vacuum reformer 107 may take different forms. In a first option, this will be a vacuum bar that is mechanically moved to meet the container in the compressed 6 o'clock location. Vacuum will be established with the overwrap, and the bar will be moved perpendicular to the cup center line, pulling the overwrap with it, hence, reestablishing the air gap. In a second option, at the vacuum reformer position shown in Figure 4, the overwrap container will be transferred from the mandrel 68 to a pocket device. Vacuum in this pocket device will reshape the overwrap container, hence, reestablishing the air gap at the lower clamp position.

    [0026] With the vacuum as applied in the first option described above, a finished overwrap container 108 is formed and is indexed by the turret 66 to a position at 110. Here, the finished overwrap container 108 is blown off into a pocket of a second inverter turret 112 which is indexed to blow the overwrap container 108 to a cup stacker (not shown). The exemplary overwrap container 108 (Figures 7 and 8) has a frusto-conical shape with an open top and a closed bottom end. However, the present disclosure contemplates that the base container 42 and the overwrap 98 may be otherwise formed to provide a differently shaped overwrap container 108.

    [0027] In the completed overwrap container 108, the base container or cup 42 forms an inner wall, and the overwrap 98 forms an outer wall, the inner and outer walls defining a double walled container. The inner and outer walls are connected together by the adhesive elements 74. However, the adhesive elements 74 function to space the inner and outer walls 42, 98 from each other. Thus, the adhesive elements 74, serve as both connecting and spacing elements.

    [0028] It is important to note that the particular application of the adhesive elements 74, permit the connection of the overwrap 98 to the base container or cup 42. However, the adhesive elements 74, permit spacing of the overwrap 98 from the base container or cup 42 around the periphery thereof so that the substantially uniform air gap 114 extends between the overwrap 98 and the base container or cup 42 as seen in Figure 10. The creation and maintenance of such a uniform air gap 114 improves over the prior art by providing an overwrap container 108 which is comfortable and convenient to hold around substantially the entire periphery of the container 108.

    [0029] In another embodiment of overwrap container 108 using the base cup 42 shown in Figures 5A and 6A, the adhesive elements 74 are applied on and at least partially around the outer surface of the side wall 42A except for an adhesive-free area 76 extending longitudinally along the entire length of the base cup 42 which is left blank (i.e. without adhesive), and which is designated or reserved for clamping during formation of the overwrap container. In this embodiment, at the 6 o'clock position, the lower clamp 99 has compressed the overwrap 98 against the base cup 42 along the length thereof in the area 76 devoid of adhesive to further create no air gap therebetween. The overwrap container is formed as described above using vacuum to produce the substantially uniform air gap 114 as seen in Figure 10 between the overwrap 98 and the base cup 42 except in the overwrap seam area at 104. In this overwrap container 108, the inner and outer walls 42, 98 are connected together by the adhesive elements 74 except in the area 76 which is adhesive-free.

    [0030] In the foregoing description, certain terms have been used for brevity, clearness, and understanding. No unnecessary limitations are to be inferred therefrom beyond the requirement of the prior art because such terms are used for descriptive purposes and are intended to be broadly construed. The different configurations, systems, and method steps described herein may be used alone or in combination with other configurations, systems and method steps. It is to be expected that various equivalents, alternatives and modifications are possible within the scope of the appended claims.


    Claims

    1. A method for forming an overwrap container, the method comprising the steps of:

    a) providing a base container having a first side seam on a side wall that extends along a longitudinal axis to define an internal volume, and a bottom secured to the side wall;

    b) providing the side wall of the base container with connecting elements on an outer periphery of the side wall;

    c) providing an overwrap having a second side seam over the side wall of the base container such that the overwrap is joined in spaced apart relationship by the connecting elements to the side wall of the base container;

    d) clamping the overwrap to the base container along the second side seam to form a first compressed area;

    e) clamping the overwrap to the base container in an area 180° removed from the second side seam to form a second compressed area; and

    f) reforming the second compressed area to define an overwrap container having a substantially uniform spacing and air gap between the base container and the overwrap except in the first compressed area.


     
    2. The method of claim 1, wherein the connecting elements applied in step b) are absent along the complete length of the first side seam.
     
    3. An apparatus for producing an overwrap container comprising:

    a first mechanized arrangement configured to provide a base container having a side wall and a bottom connected thereto, the side wall being formed with a first side seam extending longitudinally thereof; and

    a second mechanized arrangement connected with the first mechanized arrangement and configured to provide a set of connecting elements on the side wall of the base container, and configured to position an overwrap having a second side seam around the side wall of the base container such that the side wall of the base container is joined in spaced apart relationship to the overwrap,

    the second mechanized arrangement including a clamping apparatus configured to clamp the overwrap to the base container along the second side seam to form a first compressed area, and to clamp the overwrap to the base container in an area 180° removed from the second side seam to form a second compressed area;

    the second mechanized arrangement further including a reforming arrangement reforming the second compressed area to define an overwrap container having a substantially uniform spacing and air gap between the overwrap and the base container except in the first compressed area.


     
    4. The apparatus of claim 3, wherein the second mechanized arrangement includes a set of rotary turrets having mandrels for receiving the base container and transferring the base container to stations at which the connecting elements are applied, and at which the overwrap is joined to the side wall of the base container.
     
    5. The method of claim 1 wherein:

    the connecting elements are provided on the outer periphery of the side wall except for in an adhesive-free area at a location along the side wall of the base container reserved for clamping, and

    the second side seam is in an area 180° removed from the adhesive-free area such that the overwrap is joined in spaced apart relationship by the connecting elements to the side wall of the base container except in the adhesive-free area along the side wall of the base container.


     
    6. The method of claims 1 or 5, wherein the step b) includes applying a plurality of elongated adhesive beads protruding outwardly from the outer periphery of the side wall of the base container.
     
    7. The method of claim 6, wherein the adhesive beads are applied with heated glue.
     
    8. The method of claim 6, wherein the adhesive beads are formed generally parallel to each other.
     
    9. The method of claims 1 or 5, wherein step c) includes overlapping opposite side edges of the overwrap and sealing the overlapped side edges together to form the second side seam.
     
    10. The apparatus of claim 3 wherein:

    the set of connecting elements are provided on the side wall of the base container except for in an adhesive-free area at a location along the side wall of the base container reserved for clamping, and

    the second side seam is in an area 180° removed from the adhesive-free area such that the side wall of the base container is joined in spaced apart relationship to the overwrap except in the adhesive-free area along the side wall of the base container, wherein the overwrap is clamped to the base container in an area coextensive with the adhesive-free area.


     
    11. The apparatus of claims 3 or 10, wherein the connecting elements are applied by a radial glue applicator in the form of a heated glue.
     
    12. The apparatus of claims 3 or 10, wherein the reforming arrangement includes a vacuum reformer.
     
    13. An overwrap container comprising:

    a base container having a first side seam extending longitudinally along a side wall being provided with connecting elements on an outer periphery of the side wall, and

    an overwrap positioned over the side wall of the base container such that the overwrap is joined in spaced apart relationship by the connecting elements to the side wall of the base container, the overwrap having a second side seam,

    the overwrap being clamped to the base container along the second side seam to form a first compressed area, the overwrap being further clamped to the base container in an area 180° removed from the second side seam to form a second compressed area,

    wherein the second compressed area is configured to be reformed to define an overwrap container having a substantially uniform spacing and air gap between the base container and the overwrap except in the first compressed area.


     
    14. The overwrap container of claim 13 wherein:

    the connecting elements are provided on the outer periphery of the side wall except for in an adhesive-free area at a location along the side wall of the base container reserved for clamping, and

    the overwrap is clamped to the base container in the area 180° removed from the second side seam and coextensive with the adhesive-free area to form the second compressed area.


     


    Ansprüche

    1. Verfahren zum Formen eines Umverpackungsbehälters, wobei das Verfahren die folgenden Schritte umfasst:

    a) Bereitstellen eines Grundbehälters, der eine erste Seitennaht auf einer Seitenwand, die sich entlang einer Längsachse erstreckt, um ein inneres Volumen zu definieren, und einen Boden, der an der Seitenwand befestigt ist, aufweist,

    b) Versehen der Seitenwand des Grundbehälters mit Verbindungselementen auf einem Außenumfang der Seitenwand,

    c) Bereitstellen einer Umverpackung, die eine zweite Seitennaht über der Seitenwand des Grundbehälters aufweist, so dass die Umverpackung durch die Verbindungselemente in Abstandsbeziehung mit der Seitenwand des Grundbehälters verbunden wird,

    d) Klammern der Umverpackung an den Grundbehälter entlang der zweiten Seitennaht, um einen ersten zusammengedrückten Bereich zu bilden,

    e) Klammern der Umverpackung an den Grundbehälter in einem Bereich, der 180° von der zweiten Seitennaht entfernt ist, um einen zweiten zusammengedrückten Bereich zu bilden, und

    f) Umformen des zweiten zusammengedrückten Bereichs, um einen Umverpackungsbehälter zu definieren, der, außer in dem ersten zusammengedrückten Bereich, einen im Wesentlichen gleichmäßigen Abstand und Luftspalt zwischen dem Grundbehälter und der Umverpackung aufweist.


     
    2. Verfahren nach Anspruch 1, wobei die Verbindungselemente, die in Schritt b) aufgebracht werden, entlang der vollständigen Länge der ersten Seitennaht fehlen.
     
    3. Vorrichtung zum Herstellen eines Umverpackungsbehälters, die Folgendes umfasst:

    eine erste mechanisierte Anordnung, die dafür konfiguriert ist, einen Grundbehälter bereitzustellen, der eine Seitenwand und einen Boden, der mit derselben verbunden ist, aufweist, wobei die Seitenwand mit einer ersten Seitennaht geformt ist, die sich in Längsrichtung derselben erstreckt, und

    eine zweite mechanisierte Anordnung, die mit der ersten mechanisierten Anordnung verbunden und dafür konfiguriert ist, einen Satz von Verbindungselementen auf der Seitenwand des Grundbehälters bereitzustellen, und dafür konfiguriert ist, eine Umverpackung, die eine zweite Seitennaht aufweist, derart um die Seitenwand des Grundbehälters anzuordnen, dass die Seitenwand des Grundbehälters in Abstandsbeziehung mit der Umverpackung verbunden ist,

    wobei die zweite mechanisierte Anordnung eine Klammervorrichtung einschließt, die dafür konfiguriert ist, die Umverpackung entlang der zweiten Seitennaht an den Grundbehälter zu klammern, um einen ersten zusammengedrückten Bereich zu bilden, und die Umverpackung in einem Bereich, der 180° von der zweiten Seitennaht entfernt ist, an den Grundbehälter zu klammern, um einen zweiten zusammengedrückten Bereich zu bilden,

    wobei die zweite mechanisierte Anordnung ferner eine Umformungsanordnung einschließt, um den zweiten zusammengedrückten Bereich umzuformen, um einen Umverpackungsbehälter zu definieren, der, außer in dem ersten zusammengedrückten Bereich, einen im Wesentlichen gleichmäßigen Abstand und Luftspalt zwischen der Umverpackung und dem Grundbehälter aufweist.


     
    4. Vorrichtung nach Anspruch 3, wobei die zweite mechanisierte Anordnung einen Satz von Drehrevolverköpfen einschließt, die Dorne zum Aufnehmen des Grundbehälters und Überführen des Grundbehälters zu Stationen, an denen die Verbindungselemente aufgebracht werden und an denen die Umverpackung mit der Seitenwand des Grundbehälters verbunden wird, aufweist.
     
    5. Verfahren nach Anspruch 1, wobei:

    die Verbindungselemente auf dem Außenumfang der Seitenwand bereitgestellt werden, außer in einem klebstofffreien Bereich an einer Position entlang der Seitenwand des Grundbehälters, der zum Klammern reserviert wird, und

    sich die zweite Seitennaht in einem Bereich, der 180° von dem klebstofffreien Bereich entfernt ist, befindet, so dass die Umverpackung, außer in dem klebstofffreien Bereich entlang der Seitenwand des Grundbehälters, durch die Verbindungselemente in Abstandsbeziehung mit der Seitenwand des Grundbehälters verbunden wird.


     
    6. Verfahren nach Anspruch 1 oder 5, wobei der Schritt b) das Aufbringen von länglichen Klebstoffwülsten einschließt, die von dem Außenumfang der Seitenwand des Grundbehälters nach außen vorspringen.
     
    7. Verfahren nach Anspruch 6, wobei die Klebstoffwülste mit erhitztem Klebstoff aufgebracht werden.
     
    8. Verfahren nach Anspruch 6, wobei die Klebstoffwülste im Allgemeinen parallel zueinander geformt werden.
     
    9. Verfahren nach Anspruch 1 oder 5, wobei Schritt c) das Überlappen gegenüberliegender Seitenkanten der Umverpackung und das Versiegeln der überlappten Seitenkanten miteinander, um die zweite Seitennaht zu formen, einschließt.
     
    10. Vorrichtung nach Anspruch 3, wobei:

    der Satz von Verbindungselementen auf der Seitenwand des Grundbehälters bereitgestellt werden, außer in einem klebstofffreien Bereich an einer Position entlang der Seitenwand des Grundbehälters, der zum Klammern reserviert ist, und

    sich die zweite Seitennaht in einem Bereich, der 180° von dem klebstofffreien Bereich entfernt ist, befindet, so dass die Umverpackung, außer in dem klebstofffreien Bereich entlang der Seitenwand des Grundbehälters, durch in Abstandsbeziehung mit der Seitenwand des Grundbehälters verbunden ist, wobei die Umverpackung in einem Bereich, der mit dem klebstofffreien Bereich übereinstimmt, an den Grundbehälter geklammert ist.


     
    11. Vorrichtung nach Anspruch 3 oder 10, wobei die Verbindungselemente durch einen radialen Klebstoffapplikator in der Form eines erhitzten Klebstoffs aufgebracht werden.
     
    12. Vorrichtung nach Anspruch 3 oder 10, wobei die Umformungsanordnung einen Vakuumumformer einschließt.
     
    13. Umverpackungsbehälter, der Folgendes umfasst:

    einen Grundbehälter, der eine erste Seitennaht aufweist, die sich in Längsrichtung entlang einer Seitenwand erstreckt, die mit Verbindungselementen auf einem Außenumfang der Seitenwand versehen ist, und

    eine Umverpackung, die derart über der Seitenwand des Grundbehälters angeordnet ist, dass die Umverpackung durch die Verbindungselemente in Abstandsbeziehung mit der Seitenwand des Grundbehälters verbunden ist, wobei die Umverpackung eine zweite Seitennaht aufweist,

    wobei die Umverpackung entlang der zweiten Seitennaht an den Grundbehälter geklammert ist, um einen ersten zusammengedrückten Bereich zu bilden, wobei die Umverpackung ferner in einem Bereich, der 180° von der zweiten Seitennaht entfernt ist, an den Grundbehälter geklammert ist, um einen zweiten zusammengedrückten Bereich zu bilden,

    wobei der zweite zusammengedrückte Bereich dafür konfiguriert ist, umgeformt zu werden, um einen Umverpackungsbehälter zu definieren, der, außer in dem ersten zusammengedrückten Bereich, einen im Wesentlichen gleichmäßigen Abstand und Luftspalt zwischen der Umverpackung und dem Grundbehälter aufweist.


     
    14. Umverpackungsbehälter nach Anspruch 13, wobei:

    die Verbindungselemente auf dem Außenumfang der Seitenwand bereitgestellt werden, außer in einem klebstofffreien Bereich an einer Position entlang der Seitenwand des Grundbehälters, der zum Klammern reserviert wird, und

    die Umverpackung in dem Bereich, der 180° von der zweiten Seitennaht entfernt ist und mit dem klebstofffreien Bereich übereinstimmt, an den Grundbehälter geklammert ist, um den zweiten zusammengedrückten Bereich zu bilden.


     


    Revendications

    1. Procédé destiné à façonner un récipient de suremballage, le procédé comprenant les étapes consistant à :

    a) fournir un récipient de base présentant une première jointure latérale sur une paroi latérale qui s'étend le long d'un axe longitudinal pour définir un volume interne, et un fond fixé à la paroi latérale ;

    b) fournir à la paroi latérale du récipient de base des éléments de liaison sur une périphérie externe de la paroi latérale ;

    c) fournir un suremballage présentant une seconde jointure latérale par-dessus la paroi latérale du récipient de base de telle sorte que le suremballage est assemblé dans une relation espacée par les éléments de liaison à la paroi latérale du récipient de base ;

    d) pincer le suremballage sur le récipient de base le long de la seconde jointure latérale pour façonner une première zone comprimée ;

    e) pincer le suremballage sur le récipient de base dans une zone écartée de 180° par rapport à la seconde jointure latérale pour façonner une seconde zone comprimée ; et

    f) refaçonner la seconde zone comprimée pour définir un récipient de suremballage présentant un espacement et un intervalle sensiblement uniformes entre le récipient de base et le suremballage sauf dans la première zone comprimée.


     
    2. Procédé selon la revendication 1, dans lequel les éléments de liaison appliqués à l'étape b) sont absents sur toute la longueur de la première jointure latérale.
     
    3. Appareil destiné à produire un récipient de suremballage comprenant :

    un premier agencement mécanisé configuré pour fournir un récipient de base présentant une paroi latérale et un fond relié à celle-ci, la paroi latérale étant façonnée avec une première jointure latérale s'étendant dans le sens longitudinal de celle-ci ; et

    un second agencement mécanisé relié au premier agencement mécanisé et configuré pour fournir un ensemble d'éléments de liaison sur la paroi latérale du récipient de base, et configuré pour positionner un suremballage présentant une seconde jointure latérale autour de la paroi latérale du récipient de base de telle sorte que la paroi latérale du récipient de base est assemblée dans une relation espacée au suremballage,

    le second agencement mécanisé comportant un appareil de pincement configuré pour pincer le suremballage au récipient de base le long de la seconde jointure latérale pour façonner une première zone comprimée, et pour pincer le suremballage au récipient de base dans une zone écartée de 180° par rapport à la seconde jointure latérale pour façonner une seconde zone comprimée ;

    le second agencement mécanisé comportant en outre un agencement de refaçonnage refaçonnant la seconde zone comprimée pour définir un récipient de suremballage présentant un espacement et un intervalle sensiblement uniformes entre le suremballage et le récipient de base sauf dans la première zone comprimée.


     
    4. Appareil selon la revendication 3, dans lequel le second agencement mécanisé comporte un ensemble de tourelles rotatives présentant des mandrins destinés à recevoir le récipient de base et à transférer le récipient de base à des postes au niveau desquels les éléments de liaison sont appliqués, et au niveau desquels le suremballage est assemblé à la paroi latérale du récipient de base.
     
    5. Procédé selon la revendication 1, dans lequel :

    les éléments de liaison sont prévus sur la périphérie externe de la paroi latérale sauf dans une zone exempte d'adhésif au niveau d'un emplacement le long de la paroi latérale du récipient de base réservée au pincement, et

    la seconde jonction latérale se trouve dans une zone écartée de 180° par rapport à la zone exempte d'adhésif de telle sorte que le suremballage est assemblé dans une relation espacée par les éléments de liaison à la paroi latérale du récipient de base sauf dans la zone exempte d'adhésif le long de la paroi latérale du récipient de base.


     
    6. Procédé selon les revendications 1 ou 5, dans lequel l'étape b) inclut l'application d'une pluralité de sphères adhésives allongées faisant saillie vers l'extérieur à partir de la périphérie externe de la paroi latérale du récipient de base.
     
    7. Procédé selon la revendication 6, dans lequel les sphères adhésives sont appliquées avec de la colle chauffée.
     
    8. Procédé selon la revendication 6, dans lequel les sphères adhésives sont formées de manière globalement parallèle les unes aux autres.
     
    9. Procédé selon les revendications 1 ou 5, dans lequel l'étape c) inclut le fait de suremballer des bords latéraux opposés du suremballage et le scellement des bords latéraux suremballés ensemble pour façonner la seconde jointure latérale.
     
    10. Procédé selon la revendication 3, dans lequel :

    l'ensemble d'éléments de liaison sont prévus sur la paroi latérale du récipient de base sauf dans une zone exempte d'adhésif au niveau d'un emplacement le long de la paroi latérale du récipient de base réservée au pincement, et

    la seconde jointure latérale se trouve dans une zone écartée de 180° par rapport à la zone exempte d'adhésif de telle sorte que la paroi latérale du récipient de base est assemblée dans une relation espacée au suremballage sauf dans la zone exempte d'adhésif le long de la paroi latérale du récipient de base, dans lequel le suremballage est pincé sur le récipient de base dans une zone coextensive avec la zone exempte d'adhésif.


     
    11. Appareil selon les revendications 3 ou 10, dans lequel les éléments de liaison sont appliqués par un applicateur de colle radial sous la forme d'une colle chauffée.
     
    12. Appareil selon les revendications 3 ou 10, dans lequel l'agencement de refaçonnage inclut un appareil de refaçonnage à vide.
     
    13. Récipient de suremballage comprenant :

    un récipient de base présentant une première jointure latérale s'étendant dans le sens longitudinal le long d'une paroi latérale qui est dotée d'éléments de liaison sur une périphérie externe de la paroi latérale, et

    un suremballage positionné par-dessus la paroi latérale du récipient de base de telle sorte que le suremballage est assemblé dans une relation espacée par les éléments de liaison à la paroi latérale du récipient de base, le suremballage présentant une seconde jointure latérale,

    le suremballage étant pincé sur le récipient de base le long de la seconde jointure latérale pour façonner une première zone comprimée, le suremballage étant en outre pincé sur le récipient de base dans une zone écartée de 180° par rapport à la seconde jointure latérale pour façonner une seconde zone comprimée,

    dans lequel la seconde zone comprimée est configurée pour être refaçonnée pour définir un récipient de suremballage présentant un espacement et un intervalle sensiblement uniformes entre le récipient de base et le suremballage sauf dans la première zone comprimée.


     
    14. Récipient de suremballage selon la revendication 13, dans lequel :

    les éléments de liaison sont prévus sur la périphérie externe de la paroi latérale sauf dans une zone exempte d'adhésif au niveau d'un emplacement le long de la paroi latérale du récipient de base réservée au pincement, et

    le suremballage est pincé sur le récipient de base dans la zone écartée de 180° par rapport à la seconde jointure latérale et coextensive avec la zone exempte d'adhésif pour façonner la seconde zone comprimée.


     




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    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description