EP0864508A1 - Container of flexible material, particularly for liquid, viscous or granular products - Google Patents

Container of flexible material, particularly for liquid, viscous or granular products Download PDF

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Publication number
EP0864508A1
EP0864508A1 EP97830110A EP97830110A EP0864508A1 EP 0864508 A1 EP0864508 A1 EP 0864508A1 EP 97830110 A EP97830110 A EP 97830110A EP 97830110 A EP97830110 A EP 97830110A EP 0864508 A1 EP0864508 A1 EP 0864508A1
Authority
EP
European Patent Office
Prior art keywords
container
reinforcing element
walls
opposite
container according
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.)
Granted
Application number
EP97830110A
Other languages
German (de)
French (fr)
Other versions
EP0864508B1 (en
Inventor
Franco Goglio
Giorgio Bottini
Luigino Bianconi
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.)
Goglio Luigi Milano SpA
Original Assignee
Goglio Luigi Milano SpA
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 Goglio Luigi Milano SpA filed Critical Goglio Luigi Milano SpA
Priority to EP19970830110 priority Critical patent/EP0864508B1/en
Priority to DE1997618893 priority patent/DE69718893T2/en
Priority to ES97830110T priority patent/ES2187744T3/en
Publication of EP0864508A1 publication Critical patent/EP0864508A1/en
Application granted granted Critical
Publication of EP0864508B1 publication Critical patent/EP0864508B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details

Definitions

  • the present invention relates to a container of flexible material, particularly for liquid, viscous or granular products.
  • Containers of the above type made of flexible single-layer or multi-layer material, with one or both outer surfaces heat sealable, for example of polyethylene, are known and obtained by successive folding and sealing, normally from a double film.
  • These containers also known as stand-up containers, normally have a widened, reinforced base and are tapered towards the top.
  • the aim of the invention is to eliminate the aforementioned drawbacks, providing a container of flexible material for liquid, viscous or granular products, that maintains a perfectly upright position under any condition, avoiding crosswise swelling.
  • a second aim of the invention is to provide the package with greater stability, both when it is full and during the subsequent emptying stage.
  • Another aim of the invention is to provide such a container that can be made simply and economically.
  • the container according to the invention is prepared with at least one inner reinforcement, which prevents the opposite side walls from separating beyond a certain limit when the container is filled with product.
  • This reinforcement advantageously consists of a tubular element or sleeve, which is placed inside the container and fixed by means of two respective weld lines to each of the two opposite side walls of the container.
  • each reinforcing element could consist of a diaphragm with the ends welded to the two opposite side walls of the container, diaphragm which lies folded inside the container when the container is in the flattened state, before filling, and spreads out, allowing a maximum widening of the container corresponding to its length, when the container is filled.
  • a plurality of reinforcing elements are placed, in order to avoid possible swelling in areas at a distance from that where a single reinforcing element would be situated.
  • the container according to the invention has been indicated as a whole with reference numeral 1. It is a container for liquid, viscous or granular products, also known as a stand-up container, made of flexible material in one or more layers, heat-sealable on at least one surface.
  • the container 1 has a standing base 2 and two opposite facing side walls 3, each welded to a respective half-perimeter 4 of the base 2, and welded to each other at the side edges 5 and the upper edge 6, after filling.
  • the container 1 thus takes on an upward tapering shape.
  • the two opposite facing side walls 3 are not perfectly squared, that is with their side walls at right angles to the base, but slope inwards, so that the container 1, when filled, takes on a substantially conical shape.
  • the container 1 is shown in the flattened form, that is with the base 2 folded and the two opposite side walls 3 touching each other, whilst in Figure 2 the container is shown in the condition of use, after filling.
  • the container 1 shown in figures 1 and 2 is a container for liquids, and for this purpose it is provided with a pouring nozzle 7 in the upper part of one of its side edges 5, whilst on the opposite side it is provided with a carrying handle 8, formed by making an opening in the corresponding welded strip 5, suitably wider than that in which the nozzle 7 is provided.
  • Figure 3 shows a container having a greater width than that of Figures 1 and 2, and provided with an upper handle.
  • Figure 3 the same reference numerals as in Figures 1 and 2 have been used to indicate similar or like elements.
  • the essential difference between the two types of containers illustrated is that in the one in Figure 3 two reinforcing elements 10 are used, which will now be described, instead of one as in the embodiment in Figures 1 and 2.
  • At least one reinforcing element 10 is provided, shown in isolation in Figures 4 and 5, and substantially shaped like a sleeve or tubular element, with two opposite surfaces 11, which are heat sealed by means of two respective weld lines 12, to the corresponding opposite walls 3 of the container 1, inside which said reinforcing elements 10 are housed.
  • the material forming the reinforcing elements 10 is also a flexible single-layered or multi-layered material, with at least one surface of heat-sealable material, such as polyethylene or the like, to allow welding to the corresponding walls 3 of the container 1.
  • the two weld lines 12 are advantageously arranged so as to diverge slightly towards the top, as shown in the appended figures, so as to allow the container a greater resistance to swelling.
  • the reinforcing element 10 when the container 1 is flattened, before filling, the reinforcing element 10 is also flattened, folding around two opposite fold lines 20 substantially positioned at the midline of the other two opposite surfaces 21 of the reinforcing element 10, causing the maximum separation between the two opposite side walls 3 of the container 1 during use.
  • Figure 5 shows the reinforcing element 10 in the open position, after filling of the container 1.
  • the tubular reinforcing element 10 does not cause any impediment to passage of the product, whether liquid, viscous or granular, whilst after filling, by taking on the shape shown in Figure 5, it prevents the opposite walls 3 of the container form separating from each other by a distance greater than that of the surfaces 21 of the reinforcing element 10, thus avoiding troublesome swelling or bulging of these types of containers.
  • the container 1 can be made to take on the desired shape, after filling, always avoiding problems of swelling of the container.
  • the reinforcing element can be replaced by a simple diaphragm or membrane, substantially corresponding to one of the surfaces 21 of the element illustrated in Figure 4 and 5, the opposite ends of which are welded to the opposite walls 3 of the container 1.
  • the reinforcing elements 10 according to the invention are inserted in the container during the production cycle thereof, between the two films destined to form the two opposite walls 3 of the container, and the weld lines 12 are advantageously made from the outside of the container.
  • the reinforcing elements 10 give the container greater stability thanks to the beam effect attributable to the inner connection between the two opposite walls 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A container of flexible material, particularly for liquid, viscous or granular products, comprising a base (2) from which two opposite walls (3) rise, joined around the perimeter to each other and to said base (2), in which at least one reinforcing element (10) is situated inside said container (1) comprising at least one flexible membrane the ends of which are welded on the inside to said opposite walls (3) of the container (1), to determine the maximum separation between said walls (3).

Description

The present invention relates to a container of flexible material, particularly for liquid, viscous or granular products.
Containers of the above type, made of flexible single-layer or multi-layer material, with one or both outer surfaces heat sealable, for example of polyethylene, are known and obtained by successive folding and sealing, normally from a double film.
These containers, also known as stand-up containers, normally have a widened, reinforced base and are tapered towards the top.
The main drawback of these containers, especially when they are used to contain liquid or viscous substances, is that they tend to swell because of the pressure exerted by the product contained inside them on the flexible side walls of the container.
This type of swelling or bulging is very unsightly and makes it difficult to read the writing on the package. Another drawback related to this problem is the increase in the crosswise measurement of the container. Moreover, the mechanical strength of the package can be reduced.
The aim of the invention is to eliminate the aforementioned drawbacks, providing a container of flexible material for liquid, viscous or granular products, that maintains a perfectly upright position under any condition, avoiding crosswise swelling.
A second aim of the invention is to provide the package with greater stability, both when it is full and during the subsequent emptying stage.
Another aim of the invention is to provide such a container that can be made simply and economically.
These aims are achieved with the container according to the invention which has the features of appended independent claim 1.
Preferred embodiments of the invention are described in the subsequent claims.
Substantially, the container according to the invention is prepared with at least one inner reinforcement, which prevents the opposite side walls from separating beyond a certain limit when the container is filled with product.
This reinforcement advantageously consists of a tubular element or sleeve, which is placed inside the container and fixed by means of two respective weld lines to each of the two opposite side walls of the container.
In a simplified form, each reinforcing element could consist of a diaphragm with the ends welded to the two opposite side walls of the container, diaphragm which lies folded inside the container when the container is in the flattened state, before filling, and spreads out, allowing a maximum widening of the container corresponding to its length, when the container is filled.
For large-sized containers, a plurality of reinforcing elements are placed, in order to avoid possible swelling in areas at a distance from that where a single reinforcing element would be situated.
Further characteristics of the invention will be made clearer by the detailed description that follows, referring to a purely exemplary and therefore non-limiting embodiment, illustrated in the appended drawings, in which:
  • Figure 1 is a schematic side elevation of a container provided with a reinforcing element according to the invention, shown in the flattened state, before filling;
  • Figure 2 is an axonometric view of the container in Figure 1, after filling;
  • Figure 3 is a similar view to that in Figure 1, of a larger-sized container, provided with two reinforcing elements;
  • Figure 4 is an axonometric view of a reinforcing element of the container according to the invention, shown in the folded state;
  • Figure 5 is an axonometric view of the reinforcing element in Figure 4, in the opened state of use.
    • In Figures 1 and 2, the container according to the invention has been indicated as a whole with reference numeral 1. It is a container for liquid, viscous or granular products, also known as a stand-up container, made of flexible material in one or more layers, heat-sealable on at least one surface.
    The container 1 has a standing base 2 and two opposite facing side walls 3, each welded to a respective half-perimeter 4 of the base 2, and welded to each other at the side edges 5 and the upper edge 6, after filling. The container 1 thus takes on an upward tapering shape.
    In the example shown, the two opposite facing side walls 3 are not perfectly squared, that is with their side walls at right angles to the base, but slope inwards, so that the container 1, when filled, takes on a substantially conical shape.
    In Figure 1, the container 1 is shown in the flattened form, that is with the base 2 folded and the two opposite side walls 3 touching each other, whilst in Figure 2 the container is shown in the condition of use, after filling.
    The container 1 shown in figures 1 and 2 is a container for liquids, and for this purpose it is provided with a pouring nozzle 7 in the upper part of one of its side edges 5, whilst on the opposite side it is provided with a carrying handle 8, formed by making an opening in the corresponding welded strip 5, suitably wider than that in which the nozzle 7 is provided.
    It is obvious that the type of container shown in Figures 1 and 2 is purely exemplary, and that other forms and constructions are possible, within the scope of the inventive solution that will be described below.
    Thus, for example, Figure 3 shows a container having a greater width than that of Figures 1 and 2, and provided with an upper handle. In Figure 3 the same reference numerals as in Figures 1 and 2 have been used to indicate similar or like elements. The essential difference between the two types of containers illustrated is that in the one in Figure 3 two reinforcing elements 10 are used, which will now be described, instead of one as in the embodiment in Figures 1 and 2.
    According to the invention, in fact, to eliminate the problems set out in the introduction, related to swelling of the container, at least one reinforcing element 10 is provided, shown in isolation in Figures 4 and 5, and substantially shaped like a sleeve or tubular element, with two opposite surfaces 11, which are heat sealed by means of two respective weld lines 12, to the corresponding opposite walls 3 of the container 1, inside which said reinforcing elements 10 are housed.
    The material forming the reinforcing elements 10 is also a flexible single-layered or multi-layered material, with at least one surface of heat-sealable material, such as polyethylene or the like, to allow welding to the corresponding walls 3 of the container 1.
    The two weld lines 12 are advantageously arranged so as to diverge slightly towards the top, as shown in the appended figures, so as to allow the container a greater resistance to swelling.
    As shown in Figure 4, when the container 1 is flattened, before filling, the reinforcing element 10 is also flattened, folding around two opposite fold lines 20 substantially positioned at the midline of the other two opposite surfaces 21 of the reinforcing element 10, causing the maximum separation between the two opposite side walls 3 of the container 1 during use.
    Figure 5, on the other hand, shows the reinforcing element 10 in the open position, after filling of the container 1.
    During filling of the container from above, that is before heat sealing along the upper edge 6 of the container, the tubular reinforcing element 10 does not cause any impediment to passage of the product, whether liquid, viscous or granular, whilst after filling, by taking on the shape shown in Figure 5, it prevents the opposite walls 3 of the container form separating from each other by a distance greater than that of the surfaces 21 of the reinforcing element 10, thus avoiding troublesome swelling or bulging of these types of containers.
    By making the reinforcing elements 10 of a suitable shape, the container 1 can be made to take on the desired shape, after filling, always avoiding problems of swelling of the container.
    In the embodiment in Figure 3 two reinforcing elements 10 arranged side by side are provided, because of the greater width of the container 1.
    In a simpler embodiment, the reinforcing element can be replaced by a simple diaphragm or membrane, substantially corresponding to one of the surfaces 21 of the element illustrated in Figure 4 and 5, the opposite ends of which are welded to the opposite walls 3 of the container 1.
    In this case, a larger number of reinforcing elements will normally be necessary to ensure that the container keeps its shape, without swelling.
    The reinforcing elements 10 according to the invention are inserted in the container during the production cycle thereof, between the two films destined to form the two opposite walls 3 of the container, and the weld lines 12 are advantageously made from the outside of the container.
    The reinforcing elements 10 give the container greater stability thanks to the beam effect attributable to the inner connection between the two opposite walls 3.
    From what is described the advantages of the arrangement proposed by the invention are clear, though it must not be considered restricted to what is described and illustrated above, but solely to the content of the claims that follow.

    Claims (10)

    1. A container of flexible material, particularly for liquid, viscous or granular products, having a standing base (2) from which rise at least two opposite walls (3) joined around the perimeter to each other and to said base (2), characterized in that it comprises on its inside at least one reinforcing element (10) fixed to said opposite walls (3), the length of said reinforcing element (10) determining the greatest separation of said walls (3) with respect to each other in the area in which it is situated.
    2. A container according to claim 1, in which said reinforcing element (10) comprises a flexible membrane made of sheet material, the ends of which are welded to said opposite walls (3) of the container (1) along respective weld lines (12) extending substantially in the direction of the height of the container (1).
    3. A container according to claim 1, in which said reinforcing element (10) comprises a sleeve or tubular element of flexible sheet material, having two opposite surfaces (11), welded to the corresponding walls (3) of the container (1) by means of two respective weld lines (12) which extend essentially along the height of the container (1), said opposite surfaces (11) being connected one to the other by means of a further pair of opposite surfaces (21), starting from said weld lines (12).
    4. A container according to claim 3, characterized in that each pair of weld lines (12) between a surface (11) of the reinforcing element (10) and the corresponding wall (3) of the container (1) is arranged so as to diverge slightly towards the top.
    5. A container according to claim 3 or 4, characterized in that said reinforcing element (10) lies flattened inside the container 1, before filling, folded around fold lines (20) situated substantially at the midlines of said surfaces (21) connecting said opposite surfaces (11).
    6. A container according to any one of claims 3 to 5, characterized in that said surfaces (21) of the reinforcing element (10) have an upward tapering shape.
    7. A container according to any one of the preceding claims, characterized in that it is provided with a carrying handle (8).
    8. A container according to any one of the preceding claims, characterized in that it is provided with a pouring nozzle (7).
    9. A reinforcing element for containers of flexible material for liquid, viscous or granular products, comprising a base (2) and at least two opposite walls (3) rising from the perimeter of said base (2) and joined to each other around the perimeter, characterized in that it comprises a sleeve or tubular element housed inside said container (1) and having two opposite surfaces (11) welded, by means of two respective weld lines (12) extending substantially upwards, to said opposite walls (3) of the container (1), and joined to each other by two respective opposite surfaces (21) the width of which determines the maximum permissible separation for said walls (3) of the container (1).
    10. A reinforcing element according to claim 9, characterized in that each pair of said welding lines (12), which join one surface (11) of the reinforcing element (10) to the corresponding wall (3) of the container (1), diverges slightly towards the top.
    EP19970830110 1997-03-12 1997-03-12 Container of flexible material, particularly for liquid, viscous or granular products Expired - Lifetime EP0864508B1 (en)

    Priority Applications (3)

    Application Number Priority Date Filing Date Title
    EP19970830110 EP0864508B1 (en) 1997-03-12 1997-03-12 Container of flexible material, particularly for liquid, viscous or granular products
    DE1997618893 DE69718893T2 (en) 1997-03-12 1997-03-12 Containers made of flexible material, especially for liquid, viscous or granular products
    ES97830110T ES2187744T3 (en) 1997-03-12 1997-03-12 FLEXIBLE MATERIAL CONTAINER, PARTICULARLY FOR LIQUID, VISCOSE OR GRANULATED PRODUCTS.

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP19970830110 EP0864508B1 (en) 1997-03-12 1997-03-12 Container of flexible material, particularly for liquid, viscous or granular products

    Publications (2)

    Publication Number Publication Date
    EP0864508A1 true EP0864508A1 (en) 1998-09-16
    EP0864508B1 EP0864508B1 (en) 2003-02-05

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    ID=8230593

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19970830110 Expired - Lifetime EP0864508B1 (en) 1997-03-12 1997-03-12 Container of flexible material, particularly for liquid, viscous or granular products

    Country Status (3)

    Country Link
    EP (1) EP0864508B1 (en)
    DE (1) DE69718893T2 (en)
    ES (1) ES2187744T3 (en)

    Cited By (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0989069A2 (en) * 1998-09-24 2000-03-29 Bischof und Klein GmbH & Co. Self-standing pouch made of sealable material
    WO2005030598A1 (en) * 2003-10-02 2005-04-07 Eco Lean Research & Development A/S Container
    JP2011178458A (en) * 2010-03-03 2011-09-15 Fujimori Kogyo Co Ltd Bag having spout
    JP2015515954A (en) * 2012-05-07 2015-06-04 ザ プロクター アンド ギャンブルカンパニー Flexible container
    CN110709484A (en) * 2017-06-01 2020-01-17 中国涂料株式会社 Laminated antifouling coating film, substrate with laminated antifouling coating film and method for producing same, coating kit for forming laminated antifouling coating film, upper antifouling coating composition, and antifouling method
    US11472146B2 (en) 2013-08-01 2022-10-18 The Procter & Gamble Company Flexible containers having improved seam and methods of making the same

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102008062377A1 (en) * 2008-12-17 2010-07-15 Khs Ag Pouch packaging with spout and air handle

    Citations (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3700018A (en) * 1970-01-14 1972-10-24 Luigi Goglio Semirigid container
    US4312473A (en) * 1979-03-23 1982-01-26 Robert Bosch Gmbh Two-chamber envelope package
    EP0311824A2 (en) * 1987-10-13 1989-04-19 KOCHSIEK MASCHINENBAU-SOLTAU GMBH & CO. Paper carrier bag
    US4978025A (en) * 1988-11-09 1990-12-18 Alizol S.A. Standable bag having an internal armature
    EP0626319A1 (en) * 1993-06-25 1994-11-30 The Procter & Gamble Company Self-standing bottom base broadened pouch

    Patent Citations (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3700018A (en) * 1970-01-14 1972-10-24 Luigi Goglio Semirigid container
    US4312473A (en) * 1979-03-23 1982-01-26 Robert Bosch Gmbh Two-chamber envelope package
    EP0311824A2 (en) * 1987-10-13 1989-04-19 KOCHSIEK MASCHINENBAU-SOLTAU GMBH & CO. Paper carrier bag
    US4978025A (en) * 1988-11-09 1990-12-18 Alizol S.A. Standable bag having an internal armature
    EP0626319A1 (en) * 1993-06-25 1994-11-30 The Procter & Gamble Company Self-standing bottom base broadened pouch

    Cited By (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0989069A2 (en) * 1998-09-24 2000-03-29 Bischof und Klein GmbH & Co. Self-standing pouch made of sealable material
    EP0989069A3 (en) * 1998-09-24 2000-08-23 Bischof und Klein GmbH & Co. Self-standing pouch made of sealable material
    WO2005030598A1 (en) * 2003-10-02 2005-04-07 Eco Lean Research & Development A/S Container
    JP2011178458A (en) * 2010-03-03 2011-09-15 Fujimori Kogyo Co Ltd Bag having spout
    JP2015515954A (en) * 2012-05-07 2015-06-04 ザ プロクター アンド ギャンブルカンパニー Flexible container
    US11472146B2 (en) 2013-08-01 2022-10-18 The Procter & Gamble Company Flexible containers having improved seam and methods of making the same
    CN110709484A (en) * 2017-06-01 2020-01-17 中国涂料株式会社 Laminated antifouling coating film, substrate with laminated antifouling coating film and method for producing same, coating kit for forming laminated antifouling coating film, upper antifouling coating composition, and antifouling method

    Also Published As

    Publication number Publication date
    DE69718893T2 (en) 2003-11-13
    ES2187744T3 (en) 2003-06-16
    EP0864508B1 (en) 2003-02-05
    DE69718893D1 (en) 2003-03-13

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