EP2643240A1 - Récipient doté de parois obtenues par courbure d'une ou plusieurs feuilles de matériau souple, comprenant un dispositif de fermeture amélioré - Google Patents

Récipient doté de parois obtenues par courbure d'une ou plusieurs feuilles de matériau souple, comprenant un dispositif de fermeture amélioré

Info

Publication number
EP2643240A1
EP2643240A1 EP10805651.6A EP10805651A EP2643240A1 EP 2643240 A1 EP2643240 A1 EP 2643240A1 EP 10805651 A EP10805651 A EP 10805651A EP 2643240 A1 EP2643240 A1 EP 2643240A1
Authority
EP
European Patent Office
Prior art keywords
container
cover
support base
collar
opening
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.)
Withdrawn
Application number
EP10805651.6A
Other languages
German (de)
English (en)
Inventor
Pasquale Cocchioni
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.)
Diva International Srl
Original Assignee
Diva International Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Diva International Srl filed Critical Diva International Srl
Publication of EP2643240A1 publication Critical patent/EP2643240A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B65D83/0805—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession through an aperture in a wall

Definitions

  • Container with walls obtained by bending one or more sheets of flexible material comprising an improved closure device
  • the present description concerns the technical field of packaging and it refers in particular to a container with walls obtained by bending one or more sheets of flexible material and comprising an improved closure device .
  • containers of the aforementioned type are known for wet or impregnated tissues, made by bending a single flexible sheet upon itself and around the material to be packaged to form four consecutive walls in opposite and spaced apart pairs of the container and by carrying out two thermowelding operations to make two further closed walls, opposite one another and spaced apart, of the container.
  • One of the walls of the container has an associated closure device made from relatively stiff plastic material having a reclosable cover, i.e. that can be repeatedly opened/closed to allow/prevent access to a withdrawal opening communicating with the inside of the container itself.
  • Containers of the aforementioned type also known as “pillow packs” or “flow packs” or “flow wrap” have the advantage of being relatively cost-effective, of being relatively small in size and of being practical to use.
  • the containers of the prior art have reclosable closure devices that do not ensure a satisfactory hermetic closure. For this reason, for example in the specific case of containers for wet or impregnated tissues, the substance that impregnates or wets the tissues tends to progressively evaporate. There is therefore a progressive deterioration of the quality of. the tissues. It has also been observed that the performance in terms of seal of the containers of the prior art worsen after repeated opening and closing cycles of the closure device.
  • Patent application US 2003/159403 describes a container with flexible walls of the state of the art of the type described above and as defined in the preamble of. the first claim.
  • the described container is defined as hermetic it is wished to improve the performance in terms of seal of the closure device.
  • such a document describes a container in which the cover is made integrally with a base part of the closure device in which the withdrawal opening is defined. This in some cases makes it relatively complex to make the closure device by moulding.
  • Document FR 2814348 describes a container with stiff walls that is not hermetic, in which the cover is made as a distinct piece from the body of the container.
  • the body of the container is provided inside the withdrawal opening with a seat in which an appendix of the cover can be engaged, provided to couple the cover with the body of the container.
  • Such an appendix is hinged to the cover. In 'this way it is possible, as represented in figure 2 of the same document FR 2814348 to reduce the visual impact of the hinge, but this expedient involves substantial complications if it is wished to make the described container hermetic.
  • a purpose of the present description is to provide a container that is able to avoid the drawbacks described above with reference to the containers of the prior art and that in particular has increased air-tightness and can be made through relatively simpler moulding.
  • ⁇ - figure 1 is a perspective view of a container made by bending one or more sheets of flexible material and comprising a closure device comprising a mobile cover shown in closed position;
  • FIG. 2 is a further perspective view of the container of figure 1, in which the cover is shown in open position;
  • figure 3 is a side section view along the axis Y-Y of the container of figure 1;
  • FIG. 4 is a perspective view from above of. the closure device of figure 1, in which the closure device is. shown with the cover in open position;
  • FIG. 5 is a side section view (section Y-Y of figure 4) of a part of the closure device of figure 4, in which the cover is shown in open position;
  • - figure 6 is a side section view (section Y-Y. of figure 4) of a part of the closure device of figure 4, in which the cover is shown in closed position;
  • - figure 7 shows a perspective view from above of a possible variant embodiment of the closure device;
  • FIG. 8 schematically shows some steps of. a ⁇ process for making the container represented in figures 1-6.
  • a container comprising a main body 2 formed from walls 3-8 obtained by bending at least one sheet of flexible material and defining an internal container space 9 has been globally indicated with 1.
  • the container 1 in particular comprises an upper wall 3, .an opposite lower wall 4 and four side walls in opposite pairs 5,6 and 7,8.
  • the access opening 23 is approximately quadrangular in shape with bevelled corners and slightly rounded sides.
  • the container 1 is a container made:
  • thermowelding by carrying out two welding operations, for example thermowelding, to close the aforementioned.
  • Te flexible sheet is for example, without for this reason introducing any limitation, a multi-layer sheet consisting of three coupled sheets, like for example an inner sheet of polyethylene, an intermediate sheet of aluminium and an outer sheet of plastic film. More preferably, the container 1 is a "pillow pack” or a "flow pack” or a "flow wrap".
  • the container 1 is a pillow pack or a flow pack or a flow wrap, obtained by bending a single sheet of flexible material, and in particular a container for a: plurality of wet tissues 20 intended to be housed one on top of the other inside the container 1, as represented in figure 3.
  • the container 1 comprises a closure device 10, installed from at least one relatively stiff material, comprising a support base 11, preferably but not limitingly having an essentially plate-shaped main body 14 coupled with the upper wall 3 of the container 1.
  • the essentially plate-shaped main body 14 is arranged inside the internal space 9 and is coupled with the upper wall 3 on the side 3' thereof facing towards the internal space 9. More preferably, the plate-shaped main body 14 is coupled with the upper wall 3 by welding, advantageously through thermo-welding, an edge of the access opening 23 to the underlying opposite portion of the plate-shaped main body 14.
  • the plate-shaped main body 14 is preferably made from polypropylene and more preferably from high-density polypropylene .
  • a withdrawal opening 13 is defined that has smaller dimensions than the access opening 23, which is arranged facing the access opening 23, on the same plane or on a different plane, for example in a substantially centred position with respect to the latter.
  • the withdrawal opening 13 is essentially circular in shape.
  • the. withdrawal opening 13 is substantially elliptical or oval in shape.
  • the withdrawal opening 13 could be initially blocked by an irreversibly removable cap with a tongue made integrally with the support base 11, the latter being connected through weakened lines intended to be torn .
  • the closure device 10 also comprises a mobile cover 12 operatively coupled with the support base 11 and suitable for being moved with respect to it to allow or prevent access from the outside to the withdrawal opening 13.
  • a cover 12 is for example rotatably hinged to the support base 11.
  • the hinging line of the cover 12 has been indicated with 16.
  • the cover 12 is made in a distinct piece, from the support base 11 and is coupled with the latter through at least one interlocking coupling element 19 provided in the cover 12.
  • the support base 11 comprises a interlocking coupling pocket 18 accessible from an opening arranged laterally with respect to the withdrawal opening 13 and arranged outside /.of the withdrawal opening and having an opening axis parallel to the opening axis Z-Z of the withdrawal opening 13.
  • the cover 12 comprises an interlocking Coupling element in the form of a fixed appendix 19 having a connection portion received inside the pocket 18 being axially engaged inside the latter. In practice,- the fixed . appendix 19 is intended not to move with respect to the support base 11 during the opening/closing of the cover 12.
  • the fixed appendix 19 is firmly locked in the pocket 18 and is separated from the remaining part of the cover 12 by the hinging line 16.
  • the pocket 18 is isolated from the internal space 9 of the container 1 as no fluid communication passage is foreseen in the inner walls of the pocket 18 suitable for placing the inside of the pocket 18 in communication with the internal space 9. More, preferably, the pocket 18 is isolated from the internal space 9 even when the fixed appendix 19 of the cover 12 is not engaged in the pocket 18.
  • the pocket 18 and the fixed appendix 19 of the cover are the same length, or roughly the same length, as the side 34 of the cover 12 hinged to the fixed appendix 19.
  • the interlocking coupling of the fixed appendix in the pocket 18 is obtained by shape coupling between an outer surface of the fixed appendix 19 and an inner surface of the pocket 18.
  • one of the inner surfaces of the pocket comprises a projection 30
  • how the opposite outer surface of the fixed appendix 19 comprises an undercut 31 suitable for cooperating with the projection 30 to lock the interlocking element 19 in the pocket 18.
  • the projection 30 and the undercut 31 are roughly- the same length as the side of the cover hinged to the hinge 16.
  • the outer surface of the appendix 19 is the outer surface of a wall that continuously surrounds a recess inside the interlocking appendix and facing the pocket 18.
  • the support base 11 also comprises a first and a second tab 15 hinged to the plate-shaped main body 14 along two peripheral edges thereof 25 arranged on opposite sides with respect to the withdrawal opening 13.
  • the tabs 15 are two ⁇ panels, preferably quadrangular, rotatably hinged to the plate-shaped main body 14.
  • the tabs 15 are made integrally in a single piece with the plate- shaped main body 14 and are connected to the latter through ; a respective weakened line 25 of reduced thickness, for example obtained by moulding or by a subsequent incision operation, which represents a hinging line around which the tabs 15 can be rotated with respect to the plate-shaped main body 14.
  • a respective weakened line 25 of reduced thickness for example obtained by moulding or by a subsequent incision operation
  • the tabs 15 are coplanar to the plate-shaped main body 14. Thanks to the provision of the tabs 15 the container has a more stable shape than containers of the prior art. Indeed, it is possible to set a container of the type described above on a support plane, like for example a sales display rack, reducing the probability of such a container accidentally knocking over. This embodiment is particular advantageous for containers having relatively large dimensions. It should also be observed that a container of the type described above maintains a certain degree of shape stability even when its content is progressively emptied.
  • the support base 11 comprises a lowered seat 35, i.e. arranged at a ' lower height than the plate-shaped main body 14, which surrounds the withdrawal opening 13. More preferably, the lowered seat 35 is surrounded by a projecting frame 36. Such a projecting frame 36 projects beyond the upper wall 3 of the container when the closure device 10 is associated with the container 1.
  • the cover 12 when it is in the closed position is arranged flush with the upper edge of the projecting frame 36 and is shaped so that on the opposite side with respect to the hinge 16 an ergonomic essentially lune- shaped recess, provided for easier gripping and opening of the cover 12, is defined between the cover 12 and the frame 36.
  • the fixed appendix 19 of the cover also has an upper wall that, when - the appendix 19 is engaged in the pocket 18, is flush with the frame 36.
  • At least one from the support base 11 or the cover 12 comprises a first collar 40 that surrounds the withdrawal opening 13, the first collar 40 comprising first snap locking elements distributed around the withdrawal opening 13 and suitable for holding the cover 12 in the closed position cooperating with matching second interlocking elementsprovided on the other from the support base 11 and the cover 12.
  • the first collar 40 essentially circular in shape, is provided on the support base 11 and in particular it projects towards the cover 12 from inside the lowered seat 35.
  • the first collar 13 could project from the inner face of the cover 12.
  • the first snap locking elements 43 are provided on an outer side wall of the collar 40 and the matching interlocking elements 42 project from the cover 12 towards the first collar 40 when the cover 12 is in closed position.
  • the first snap locking elements comprise a continuous projecting edge 43 that projects from the side wall 48 of the collar 40 to define an undercut.
  • the matching interlocking elements 42 comprise a second collar 42 projecting from the cover 12 that on the inner side wall has a continuous projecting edge 44.
  • the second collar 42 is suitable for being snap-fitted by shape coupling around the first collar 40, as can be clearly seen in figure 6. It should be observed that the snap locking elements 42 and 43 are distributed around the withdrawal opening 13, and in this example they surround it with continuity. In accordance with an : alternative embodiment the snap locking elements 42 and 43 could be many discrete and separate elements distributed around the withdrawal opening 13. It should be observed that the positions of the first 40 and second 42 collar can be inverted.
  • the closure device 10 also comprises an elastically deformable compression sealing element and comprising at least one sealing portion 41 surrounding the withdrawal opening 13 and suitable for being axially clamped and compressed in closed position between an abutment surface 45 of the first collar 40 and an opposite portion of the cover 12.
  • axial direction we mean a direction parallel to the . axis Z-Z of the withdrawal opening.
  • the sealing portion is intended to be clamped and compressed between the abutment surface 45 of the first collar 40 and " an opposite portion of the support base 11.
  • the sealing element comprises a gasket 41, preferably circular and inside the second collar 42, fixedly connected to the cover 12 and that surrounds the , withdrawal opening 13 when the cover 12 is in closed position.
  • the gasket 41 is made from an elastomer integrally with the cover 12 through a bi-material moulding technique. For this purpose, with reference to figure 5, it. is possible to provide in the cover 12 a recess 47 suitable for at least partially receiving the gasket 41.
  • the gasket 41 instead of being coupled with the cover 12 is associated with the support base 11.
  • the abutment surface 45 of the first collar 40 comprises one or more raised elements 46 with respect to a remaining portion of the abutment surface 45 suitable for locally compressing a deforming the sealing element 41.
  • the abutment surface 45 is a surface of a circular crown wall 47 that extends perpendicularly to the opening axis Z-Z from the side wall 48 towards the inside of the collar 40, in practice forming an L-shaped profile with such a side wall 48.
  • the aforementioned raised elements 46 are in the form of three concentric continuous ridges 46 that surround the withdrawal opening 13.
  • the circular shape of the ridges, of the collar and of the abutment surface can be replaced with an elliptical or oval shape or by a less preferred quadrangular or in general polygonal shape .
  • the first collar 40 is included in the support base 11 and the sealing element is represented by the same cover, and the sealing portion is a portion of the same cover opposite the first collar 12, and in particular opposite the abutment surface 45.
  • This can be obtained by making the cover 12 from a relatively elastic material with respect to the material from which the support base 11 is made.
  • the support base 11 it is advantageously possible to make the support base 11 from polypropylene, preferably high-density polypropylene, and to make the cover 12 from polypropylene loaded with rubber, preferably with a percentage rubber at least equal to 35% and more preferably equal to 40%.
  • Figure 7 represents a variant embodiment of a closure device 10, which differs from the closure device described with reference to figures 1-6 in that the first snap locking elements comprise a plurality of recesses/ through openings 51 provided on the upper wall 47 of the first collar 40 and arranged between the withdrawal opening 13 and the abutment surface 45 and in that he matching interlocking elements comprise a plurality of hooks 50 that project from the cover 12 towards the first collar 40 to be received in the closed position in respective recesses or through openings 51.
  • the recesses or openings 50 and the hooks 51 are evenly distributed around the withdrawal opening. In this particular example there -are pairs of elements in diametrically opposite positions.
  • a gasket 41 integral with the cover 12 and made together with it through bi-material moulding.
  • the gasket 41 may not be foreseen and the seal can be ensured by making the cover 12 from relatively more flexible material with respect to the support base 11 as described above.
  • a sheet of flexible material having a substantially quadrangular shape with peripheral edges in parallel pairs 71-74.
  • a sheet 70 is for example a portion of a continuous and flexible flat band that extends along a direction of prevalent longitudinal extension, which is in practice the ' flow direction of the machine adapted to carry out. , the process .
  • the process foresees a step of making an opening or a weakened line on the sheet 70 to make the access opening 23 inside the sheet 70.
  • the process also comprises a step of resting the closure device 10 on the sheet 70 so that the access opening 23 or weakened line is substantially centred with respect to the access opening 13 of the closure device 10.
  • the tabs 15 are oriented on the .same plane with respect to the plate-shaped main body 14 and are therefore substantially parallel to the plane of the sheet 70.
  • thermo-welding device 75 in the process there is a step of coupling the closure device 10 with the sheet 70, for example through a thermo-welding device 75.
  • the process comprises a step of resting a content 20 for packaging inside the container, for example a pile of wet tissues, on the plate-shaped main body 14.
  • the process also comprises a step of bringing together two opposite peripheral edges 71, 73 of the sheet 70, intended to be joined to one another to form a tubular casing in which the sheet 70 is wound around the content 20 to be packaged, said bringing together, being such as to pull and rotate the tabs 15 so that they tend to orient themselves perpendicularly with respect to the plate-shaped main body 14.
  • the process also comprises a step of joining (for example by thermo-welding) together the edges that .have been. brought together 71, 73 as described in the previous step 1 to form a tubular casing having two open end portions and a step of closing said open end portions, preferably through a thermo-welding operation, to form a closed container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention porte sur un récipient (1), qui comprend : - un corps principal de récipient (2) formé à partir de parois (3-8) obtenues par courbure d'au moins une feuille de matériau souple, les parois (3-8) comprenant au moins une première paroi (3) dans laquelle une ouverture d'accès (23) à l'espace interne (9) est définie, - un dispositif de fermeture (10) comprenant une base de support (11) dans laquelle une ouverture de retrait (13) est définie, faisant face à l'ouverture d'accès (23), le dispositif de fermeture (10) comprenant également un couvercle (12) couplé à la base de support (11) et réalisé sous la forme d'une pièce distincte vis-à-vis de la base de support (11). Au moins l'un parmi la base de support (11) ou le couvercle (12) comprend un premier collier (40) qui entoure l'ouverture de retrait (13), le premier collier (40) comprenant des premiers éléments de verrouillage à encliquetage (43) répartis autour de l'ouverture de retrait (13), le dispositif de fermeture (10) comprenant également un élément de scellement hermétique à compression élastiquement déformable (41), et comprenant au moins une partie de scellement hermétique entourant l'ouverture de retrait (13).
EP10805651.6A 2010-11-24 2010-11-24 Récipient doté de parois obtenues par courbure d'une ou plusieurs feuilles de matériau souple, comprenant un dispositif de fermeture amélioré Withdrawn EP2643240A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2010/000470 WO2012070075A1 (fr) 2010-11-24 2010-11-24 Récipient doté de parois obtenues par courbure d'une ou plusieurs feuilles de matériau souple, comprenant un dispositif de fermeture amélioré

Publications (1)

Publication Number Publication Date
EP2643240A1 true EP2643240A1 (fr) 2013-10-02

Family

ID=44263069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10805651.6A Withdrawn EP2643240A1 (fr) 2010-11-24 2010-11-24 Récipient doté de parois obtenues par courbure d'une ou plusieurs feuilles de matériau souple, comprenant un dispositif de fermeture amélioré

Country Status (2)

Country Link
EP (1) EP2643240A1 (fr)
WO (1) WO2012070075A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105008243A (zh) 2013-02-19 2015-10-28 株式会社黛怡茜 面膜片包装体
WO2014141401A1 (fr) * 2013-03-13 2014-09-18 Yamada Kikuo Paquet de feuilles fibreuses
AT525906B1 (de) * 2022-06-09 2023-09-15 Georg Hagleitner Hans Spender zum Spenden von blattförmigem Material mit Dichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337041B (en) * 1998-05-08 2002-01-16 Nice Pak Internat Ltd Pop-up container
TW501918B (en) 1999-04-23 2002-09-11 Toa Machine Industry Inc Wet-sheet packing body manufacturing method
FR2814348A1 (fr) 2000-09-22 2002-03-29 Pierre Balleraud Charniere film plastique esthetique pour boitiers maquillage ou autres
US7025220B2 (en) 2002-01-04 2006-04-11 Scholle Corporation Fitment and package for storing fluid-containing materials and methods for their production
KR20090086612A (ko) 2006-11-28 2009-08-13 더루우브리졸코오포레이션 크랭크케이스 오일 중의 연비 개선제 및 내마모제로서의 타르타르산 유도체 및 이의 제조방법
WO2008067529A2 (fr) * 2006-11-30 2008-06-05 Rockline Industries, Inc. Couvercle de distribution à bouton poussoir
US20090090723A1 (en) 2007-10-08 2009-04-09 Paul Holbrook Dual-compartment container

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012070075A1 *

Also Published As

Publication number Publication date
WO2012070075A1 (fr) 2012-05-31

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