WO2021156526A1 - Sac en papier à composant imperméabilisant interne séparable - Google Patents

Sac en papier à composant imperméabilisant interne séparable Download PDF

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Publication number
WO2021156526A1
WO2021156526A1 PCT/ES2021/070025 ES2021070025W WO2021156526A1 WO 2021156526 A1 WO2021156526 A1 WO 2021156526A1 ES 2021070025 W ES2021070025 W ES 2021070025W WO 2021156526 A1 WO2021156526 A1 WO 2021156526A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
bag
paper
plastic
strips
Prior art date
Application number
PCT/ES2021/070025
Other languages
English (en)
Spanish (es)
Inventor
Jose Maria Meseguer Huertas
Original Assignee
Cristobal Meseguer, S.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
Application filed by Cristobal Meseguer, S.A. filed Critical Cristobal Meseguer, S.A.
Publication of WO2021156526A1 publication Critical patent/WO2021156526A1/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
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags
    • 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
    • B65D33/04—Windows or other apertures, e.g. for viewing contents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Definitions

  • the present invention refers to a paper bag with a removable internal waterproofing component, in which a visible external paper element and an internal waterproofing component are combined, which will generally be a plastic material, and where the link between both components is made in such a way so that once the bag is used, both paper and plastic components can be easily separated by the user to facilitate the recycling of each of said materials.
  • the technical field in which the present invention is registered is included within the industrial sector dedicated to the manufacture and commercialization of bags for the transport of products such as fruits, vegetables, and others.
  • the main objective of the present invention is to provide a bag that is obtained from a composite sheet, with the use of appropriate processes and mechanical means chosen from those existing in the state of the art.
  • the composite sheet is obtained from a first sheet of paper on one of whose surface faces (the one that is destined to constitute the inner face of the bag) a second sheet of plastic of very reduced thickness is applied and adhered, in order to behave as a waterproofing with respect to the first sheet of paper, and where the bonding of the second sheet of plastic of very reduced thickness to the first sheet of paper is carried out selectively with the application of small strips or glue strips in previously selected positions, which provide the gluing between both sheets only at the previously selected glue application points.
  • one or more perforations can be made in predetermined positions of the composite sheet for the provision of at least one window in positions corresponding to each of the bags that are subsequently manufactured from the composite sheet, being These openings are closed with the use of a respective mesh, also made of plastic material of reduced thickness, which is welded to the second plastic sheet constituting the inner face of the bag once it has been formed. Thanks to the provision of said second plastic sheet and said at least one window in relation to each bag, the product inside the latter can be appreciated from the outside, while the second plastic sheet of reduced thickness constitutes a medium.
  • the first paper sheet that constitutes the outside of the bag by virtue of its resistance, helps the second inner plastic sheet not deform, and improves the appearance of the bag with the products inside since From the outside, an observer only appreciates a paper bag that, logically, can bear legends, inscriptions, graphics, advertising, etc., as is conventional.
  • the invention has envisaged that the first sheet of paper that intervenes together with the respective second sheet of plastic in the formation of the composite sheet, incorporates a micro cut, preferably carried out by means of a laser machine for reasons of precision, safety and speed, in a position such that, once the different bags are formed from said composite sheet, it constitutes a small slit, internally closed by the second plastic sheet itself, duly marked and easily within the user's reach, such as on one side of the bag or on any of its main faces.
  • the user can easily separate both plastic and paper sheets by virtue of the reduced glue strips that join them, together with the plastic mesh welded to the second. plastic sheet, so that the user can safely select each of the containers in which to deposit each waste material, that is, the second plastic sheet with the mesh portions on one side and the first sheet of paper for another.
  • the glue strips used to bond both sheets during the process of forming the composite sheet will contain only the minimum amount of glue that is deemed necessary or essential to keep both sheets together. each other, and thereby also facilitate the peeling operation of one sheet from the other.
  • the glues used are biodegradable.
  • Figure 1 is a schematic representation of two individual sheets, namely a first sheet of paper and a second sheet of plastic, for the formation of a composite sheet according to the invention, both being represented in superimposed positions and ready for the application of a on the other;
  • Figure 2 is a schematic perspective view of a composite sheet according to Figure 1, seen from the inside (second plastic sheet), with several successive openings in preselected positions and plastic mesh portions represented in respectively superimposed positions. to each of said openings, arranged to be applied on each respective one of the latter for the purpose of closing them;
  • Figure 3 shows the same composite sheet of Figure 2, from the internal face (second plastic sheet), with each of the meshes already applied and welded above each of the openings of the composite sheet;
  • Figure 4 is an illustrative representation of an example of adaptation between a portion of the first sheet of paper already formed and a portion of the second sheet of plastic prepared and shaped to receive the first, and with meshes already incorporated, and
  • Figure 5 is an illustrative representation of an example of a bag obtained from the composite sheet of the invention, with a micro-cut made on one side of the bag in a position that is well visible and easily accessible to the user, intended to provide a traction means for separating the individual sheets that make up the composite sheet with which said bag has been made.
  • both individual sheets 1, 2 are intended to be attached to each other using a conventional but biodegradable type glue, which also will not spread over the entire surface of the first sheet 1 of paper. Instead, depending on the specific bag to be obtained, it will be applied selectively in previously established areas to obtain an efficient bonding between both sheets and so that their subsequent separation does not offer any inconvenience.
  • the representation shows, when one sheet is applied against the other, the union between the two is obtained by means of small strips or strips of glue such as those represented, in the present example, extended according to the longitudinal direction of the first sheet 1 of paper, and identified with the numerical reference 3. It will be understood that this distribution is for illustrative purposes only and that the position and distribution of the small stripes or glue strips 3 will be the one that suits each particular embodiment.
  • the main objective pursued by the invention is to be able to manufacture a bag, specifically a bag for use with fruit and vegetable products (legs, citrus fruits, etc.), using materials that can be easily recycled, it has been envisaged that the second plastic sheet 2 is of a minimum, extremely reduced thickness, that is to say, a thickness that is determined simply sufficient to waterproof the surface of the first sheet 1 of paper on which it is applied.
  • the union between both individual sheets of paper 1 and plastic 2. makes it possible to obtain a composite sheet that will be used later for the construction of the bag.
  • the first sheet 1 of paper constitutes the visible face of the bag, and may include prints of any type as is conventional
  • the second sheet 2 of plastic constitutes the inner face of the bag and, as has been said, performs a waterproofing function. preventing the humidity of the products transported in the bag from reaching the first sheet 1 of paper, wetting it and weakening it with the consequent risk breakage.
  • FIG. 2 An example of a composite sheet obtained from the two individual sheets 1, 2 of Figure 1, has been shown in Figure 2.
  • the composite sheet indicated in general with the numerical reference 4 already includes a number of openings or windows 5 successively arranged in preset positions so that the resulting bags include at least one of said windows 5. Since the windows are intended for aeration and viewing of the product from the outside, the application of respective mesh portions 6, one for each window, also made of plastic material, in such a way that when applied to a respective window, they can be welded (for example, heat-welded) to the second plastic sheet 2, closing the window but without hinder the functionality for which it was intended.
  • An example of an embodiment of the composite sheet 4 corresponding to the illustration of Figure 2, is represented in Figure 3, where the mesh portions 6 appear already welded to the second plastic sheet 2 included in the composite sheet 4.
  • Figure 4 illustrates a specific case in which a second plastic sheet 2 'has been shaped to show two openings 5', one on each side, each of which is closed with a mesh portion 6 ', of plastic material, duly welded to the surface of said second plastic sheet 2 '.
  • the first sheet 1 'of paper adopts a configuration such that it has two wide notches on the side edges, in positions corresponding to the openings or windows 5', in such a way that when both sheets 1 ', 2' are attached between yes, you get a 4 'composite sheet with both 6 * meshes exposed.
  • the first sheet 1 of paper is provided to include a small cut or slit (not visible in Figures 1 to 4), in a position such that when the bag 7 is formed, said cut or slit must occupy a position clearly visible to the user and easily accessible.
  • that small cut or slit corresponds to the hole 9 shown on one side of the bag 7, but which, as will be understood, may be on either side or in any other position. of the older faces.
  • the function of the hole 9 obtained by virtue of the small cut or slit made in the first sheet 1 of paper, is to facilitate a user that, once the bag has been used to contain and transport products such as those mentioned above, With the first outer paper sheet 1 duly protected by the second inner plastic sheet 2, the user can quickly and cleanly separate both sheets 1, 2 present in the bag 7, just by exerting a slight traction.
  • the first outer paper sheet 1 together with the small cut or slit that determines the formation of the hole 9, include a line 10 of weakness along its entire height, so that the traction exerted by the user provides a clean line of rupture of the first sheet 1 of pa pel, and the separation of the latter with respect to the second plastic sheet 2. In this way, it is possible to separate both sheets 1, 2 and that each of them can be disposed of in a corresponding container for subsequent recycling.
  • the invention is particularly applicable in the industrial sector for the manufacture of bags to contain and / or transport products, for example fruit and vegetable products.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)

Abstract

L'invention concerne un sac en papier à composant imperméabilisant interne séparable, pour son usage principal avec des produits hortofruticoles, obtenu à partir d'une couche composée (4) formée par une première couche (1) de papier adossée à une seconde couche (2) de plastique d'épaisseur minimum, la seconde couche (2) de plastique occupe une position intérieure et imperméabilise la première couche (1) de papier qui occupe une position externe. La liaison mutuelle entre les couches individuelles s'obtient par l'application de petites bandes ou lignes (3) de colle biodégradable en des positions choisies sélectivement, et la couche composée (4) comprend des ouvertures (5) fermées avec des mailles (6) respectives de plastique soudées à la deuxième couche (2) de plastique interne. Une petite découpe dans la première couche (1) de papier offre un orifice (9) dans le sac (7) pour l'application d'une force de traction et la séparation des deux couches (1, 2) de papier et de plastique pour un recyclage approprié.
PCT/ES2021/070025 2020-02-05 2021-01-19 Sac en papier à composant imperméabilisant interne séparable WO2021156526A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP202030088 2020-02-05
ES202030088A ES2848081B2 (es) 2020-02-05 2020-02-05 Bolsa de papel con componente impermeabilizante interno separable

Publications (1)

Publication Number Publication Date
WO2021156526A1 true WO2021156526A1 (fr) 2021-08-12

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ID=77125084

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2021/070025 WO2021156526A1 (fr) 2020-02-05 2021-01-19 Sac en papier à composant imperméabilisant interne séparable

Country Status (2)

Country Link
ES (1) ES2848081B2 (fr)
WO (1) WO2021156526A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5393143A (en) * 1992-08-19 1995-02-28 American Packaging Corporation Bag and method of making the same
EP0700837A2 (fr) * 1994-09-06 1996-03-13 Toppan Printing Co., Ltd. Récipient composite
EP0869073A1 (fr) * 1997-03-25 1998-10-07 Franpack Bates B.V. Sac à fond croisé et procédé pour sa fabrication
WO2010102324A1 (fr) * 2009-03-13 2010-09-16 Anthony Kwaw Quansah Matériau laminé, et sacs recyclables et réutilisables faits avec ce matériau
ES2463640A1 (es) * 2012-10-22 2014-05-28 Cristóbal Meseguer, S.A. Banda continua de papel plastificado para la fabricación de bolsas para productos hortofrutícolas y similares
US20170057698A1 (en) * 2014-02-20 2017-03-02 Mondi Ag Bag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5393143A (en) * 1992-08-19 1995-02-28 American Packaging Corporation Bag and method of making the same
EP0700837A2 (fr) * 1994-09-06 1996-03-13 Toppan Printing Co., Ltd. Récipient composite
EP0869073A1 (fr) * 1997-03-25 1998-10-07 Franpack Bates B.V. Sac à fond croisé et procédé pour sa fabrication
WO2010102324A1 (fr) * 2009-03-13 2010-09-16 Anthony Kwaw Quansah Matériau laminé, et sacs recyclables et réutilisables faits avec ce matériau
ES2463640A1 (es) * 2012-10-22 2014-05-28 Cristóbal Meseguer, S.A. Banda continua de papel plastificado para la fabricación de bolsas para productos hortofrutícolas y similares
US20170057698A1 (en) * 2014-02-20 2017-03-02 Mondi Ag Bag

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Publication number Publication date
ES2848081A1 (es) 2021-08-05
ES2848081B2 (es) 2022-11-11

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