WO2019069206A1 - Sac refermable - Google Patents

Sac refermable Download PDF

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Publication number
WO2019069206A1
WO2019069206A1 PCT/IB2018/057602 IB2018057602W WO2019069206A1 WO 2019069206 A1 WO2019069206 A1 WO 2019069206A1 IB 2018057602 W IB2018057602 W IB 2018057602W WO 2019069206 A1 WO2019069206 A1 WO 2019069206A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
sheet
joined
outer portion
bag
Prior art date
Application number
PCT/IB2018/057602
Other languages
English (en)
Inventor
Valerio Binda
Original Assignee
Masterpack S.P.A.
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
Priority claimed from IT102017000109872A external-priority patent/IT201700109872A1/it
Application filed by Masterpack S.P.A. filed Critical Masterpack S.P.A.
Publication of WO2019069206A1 publication Critical patent/WO2019069206A1/fr

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
    • 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
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5855—Peelable seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • 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
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • 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
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall

Definitions

  • TECHNICAL FIELD The present description relates to a bag which can be employed for food use, in particular a bag which can be reclosed after it has been opened.
  • a known laminated material is provided with two layers of plastic material joined by a pressure adhesive also known as PSA (Pressure-Sensitive Adhesive), which adhesive allows the separation of a tongue obtained by incising one of the two layers.
  • PSA Pressure-Sensitive Adhesive
  • Such laminated material can be used to close a food container.
  • WO 2015/145338 Al describes a tray which is closed by a sheet of such laminated material and can be opened and then reclosed by manually lifting an outer portion of the outer layer or first layer which is not joined by adhesives to the inner layer or second layer, or manually lifting an outer portion of both layers thanks to a special incision made in the second layer near the edge welded to the tray.
  • this known container can also be easily tampered with to illegally remove the contents or part of it, so that it requires a special anti-tamper seal, with consequent negative aesthetic and economic effects.
  • US 2017/0057728 Al and US 8541081 describe trays, receptacles or other rigid containers which are closed by a film which can be pulled from an outer flap, so as to create a tear in it which acts as an anti-tamper seal.
  • the object of the present description is therefore to provide a container free from such drawbacks. Said object is achieved with a bag, the main characteristics of which are specified in the attached claims.
  • the bag according to the present description can be manufactured simply, quickly and inexpensively, it is easy to open and close and is however sealed with an anti-tamper device.
  • the capacity of the bag can be increased by a bellows formed in the sheet of the side opposite to the opening of the bag, so that the bellows also acts as a base for keeping the bag in an upright position.
  • the first layer, the second layer and/or the adhesive layer are uniform and/or continuous, with the exception of the preferably single incision in the second layer, so as to manufacture in a simple and economical way a continuous laminate material, aesthetically valuable as it is free of discontinuities (except the incision), which can be easily cut into different sizes to manufacture the bag.
  • the incision in the bag is obtained by means of a mechanical die-cutter, so as to be able to use substantially transparent layers which allow the vision of a product through the resulting laminated material.
  • FIG. 1 shows a top view of the bag
  • FIG. 1 shows a bottom view of the bag of Figure 1;
  • FIG. 3 shows a vertical section view of the bag of Figure 1;
  • FIG. 5 shows the bag of Figure 4 during its opening.
  • the bag comprises at least one first layer 1 or outer layer, which is suitable to be facing the outside of the bag.
  • the first layer 1 is preferably free of cuts or openings and is joined to at least one second layer 2 or inner layer, suitable to be facing the contents of the bag, by at least one adhesive layer 3 arranged between the layers 1, 2, preferably in a uniform manner, particularly in a substantially complete manner, namely with the adhesive layer 3 which covers in a substantially complete manner the first layer 1 and/or the second layer 2, thus forming a sheet of laminated material, preferably continuous to be wound up a roll.
  • the first layer 1 and/or the second layer 2 preferably comprise at least one film of plastic material, while the adhesive 3 is preferably a pressure adhesive which allows both the separation of the first layer 1 from the second layer 2 by manual traction and their subsequent adhesion by pressing the first layer 1 on the second layer 2, and/or vice versa.
  • the first layer 1, the second layer 2 and the adhesive 3 are substantially transparent, so that the resulting laminated material is substantially transparent.
  • the second layer 2 is made of a material capable of be cut if subjected to a shear stress, preferably without substantially elongating or deforming, and is preferably suitable to be heat welded.
  • Said material comprises in particular polyethylene, polypropylene cast or another polyolefin and/or has a thickness of between 15 and 100 microns, preferably between 15 and 50 microns. The thicknesses shown in Figure 4 have been enlarged for reasons of clarity.
  • An incision 4 preferably in the shape of a tongue, in particular U-shaped or V- shaped, is formed in the second layer 2, so as to form in the second layer 2 a tongue- shaped portion 2a which can be separated from a remaining portion 2b of the second layer 2 and remain joined to the first layer 1 by means of the adhesive 3.
  • At least one end of the incision 4 is preferably provided with a curl 5 to prevent a tear of the second layer 2 and/or a detachment thereof from the first layer 1 at this curl 5.
  • the second layer 2 may have other incisions but it is preferable that it has no other incisions besides the incision 4.
  • the second layer 2 is joined, in particular welded, to at least one sheet 6, in particular a sheet comprising one or more layers of plastic material laminated with each other, in which at least one surface of the sheet 6 is suitable to be joined, preferably heat- welded, to the second layer 2.
  • the width and/or the length of the first layer 1 are substantially equal to the width and/or the length, respectively, of the second layer 2 and/or of the sheet 6.
  • the sheet 6 may be provided with a bellows 7 to form a bag with a larger cavity together with the layers 1, 2.
  • the portion 2c of the second layer 2 joined to the sheet 6 at least partially surrounds the incision 4, in particular forming a perimetrical frame that delimits a cavity between the second layer 2 and the sheet 6.
  • At least one portion 2d of the second layer 2 is arranged outside the portion 2c joined to the sheet 6, namely on the opposite side with respect to the portions 2a and 2b which are inside the portion 2c, as shown in Figure 3.
  • the outer portion 2d can be gripped by two fingers by a user, together with the portion of the first layer 1 joined to this outer portion 2d, so as to manually separate the second layer 2 from the sheet 6.
  • the outer portion 2d of the second layer 2 is preferably joined to the first layer 1 by an adhesive layer, in particular by the adhesive layer 3.
  • the outer portion 2d of the second layer 2 is arranged on the side opposite to the bellows 7 of the sheet 6.
  • Figure 5 shows the outer portion 2d of the second layer 2 pulled manually in the direction of the arrow S by the user together with the corresponding portion of the first layer 1, so that the outer portion 2d of the second layer 2 is separated from the portion 2c joined to the sheet 6, thus creating at least one cut 8 between these two portions 2c, 2d of the second layer 2.
  • the cut 8 starts from an edge of the second layer 2 and follows the edge of the portion 2c adjacent to the outer portion 2d.
  • the outer portion 2d of the second layer 2 is then separated by the cut 8 from the portion 2c joined to the sheet 6 and from the remaining portions 2a, 2b of the second layer 2.
  • the tongue- shaped portion 2a of the second layer 2 is raised due to the lifting of the first layer 1 joined thereto by the adhesive layer 3, while the remaining portion 2b of the second layer 2 is kept joined to the sheet 6 by the portion 2c joined thereto.
  • the outer portion 2d of the second layer 2 is arranged on at least one corner of the bag and preferably has a rectangular, triangular or arcuate shape, or a combination thereof.
  • the outer portion 2d shown in Figure 3 has a combination of a rectangular shape and a triangular shape, in which the triangular portion corresponds to a corner of the layers 1 and 2.
  • the first layer 1 provided with adhesive 3 is joined to the second layer 2 by auxiliary rollers, so as to obtain a laminated material.
  • at least one mechanical die-cutter in particular a roller die-cutter, forms the incision 4 in the second layer 2.
  • the incision 4 can be formed in the second layer 2 before joining the first layer 1 to the second layer 2.
  • this laminated material is joined to a sheet by adhesive or preferably heat-sealing and then cut to obtain the bag, wherein the second layer 2 is joined to the sheet 6.
  • the second layer 2 can be joined first to the sheet 6 and then to the first layer 1.
  • One or more further incisions in particular a series of incisions (not shown in the figures) arranged along at least one straight or curvilinear trajectory, so as to form a dashed line, may be made in the outer portion 2d of the second layer 2, so as to favor the cut 8 between the outer portion 2d and the remaining portion of the second layer 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Bag Frames (AREA)

Abstract

La présente invention concerne un sac comprenant une première couche (1) reliée à au moins une seconde couche (2) par au moins une couche adhésive (3), au moins une incision (4) étant réalisée dans la seconde couche (2), de manière à former dans la seconde couche (2) une partie (2a) qui peut être séparée d'une partie restante (2b) de la seconde couche (2) et rester jointe à la première couche (1) au moyen de la couche d'adhésif (3), une partie (2c) de la seconde couche (2) entourant l'incision (4) étant reliée à au moins une feuille (6) en matière plastique, formant ainsi un cadre périmétrique qui délimite une cavité entre la seconde couche et la feuille, la largeur et la longueur de la première couche, de la seconde couche et de la feuille étant sensiblement égales, une partie de préhension (2d) de la seconde couche étant disposée à l'extérieur de la partie jointe à la feuille, la seconde couche étant réalisée en matériau de rupture de telle manière que, si un utilisateur tire la partie de préhension, elle est séparée de la partie reliée à la feuille de manière à créer au moins une rupture (8) entre ces deux parties.
PCT/IB2018/057602 2017-10-02 2018-10-01 Sac refermable WO2019069206A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT102017000109872A IT201700109872A1 (it) 2017-10-02 2017-10-02 Contenitore e processo per la sua fabbricazione
IT102017000109872 2017-10-02
IT102018000005541 2018-05-21
IT201800005541 2018-05-21

Publications (1)

Publication Number Publication Date
WO2019069206A1 true WO2019069206A1 (fr) 2019-04-11

Family

ID=63857998

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/057602 WO2019069206A1 (fr) 2017-10-02 2018-10-01 Sac refermable

Country Status (1)

Country Link
WO (1) WO2019069206A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1234664A (fr) * 1968-06-07 1971-06-09
US20080031555A1 (en) * 2004-11-11 2008-02-07 Alcan Technology & Management Ltd. Pouch-type packaging
US20100172604A1 (en) * 2009-01-06 2010-07-08 Printpack Illinois, Inc. Reclosable Container with Resealable Flexible Cover and Method for Manufacturing the Same
US20130266243A1 (en) * 2005-11-07 2013-10-10 Panagiotis Kinigakis Flexible Package with Internal, Resealable Closure Feature

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1234664A (fr) * 1968-06-07 1971-06-09
US20080031555A1 (en) * 2004-11-11 2008-02-07 Alcan Technology & Management Ltd. Pouch-type packaging
US20130266243A1 (en) * 2005-11-07 2013-10-10 Panagiotis Kinigakis Flexible Package with Internal, Resealable Closure Feature
US20100172604A1 (en) * 2009-01-06 2010-07-08 Printpack Illinois, Inc. Reclosable Container with Resealable Flexible Cover and Method for Manufacturing the Same

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