EP4265537A1 - Sachet tubulaire en papier et son procédé de fabrication - Google Patents

Sachet tubulaire en papier et son procédé de fabrication Download PDF

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Publication number
EP4265537A1
EP4265537A1 EP22169291.6A EP22169291A EP4265537A1 EP 4265537 A1 EP4265537 A1 EP 4265537A1 EP 22169291 A EP22169291 A EP 22169291A EP 4265537 A1 EP4265537 A1 EP 4265537A1
Authority
EP
European Patent Office
Prior art keywords
paper sheet
transverse
paper
transverse edge
tubular
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.)
Pending
Application number
EP22169291.6A
Other languages
German (de)
English (en)
Inventor
Rainer Ulrich
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.)
Ulrich Etiketten GmbH
Original Assignee
Ulrich Etiketten GmbH
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 Ulrich Etiketten GmbH filed Critical Ulrich Etiketten GmbH
Priority to EP22169291.6A priority Critical patent/EP4265537A1/fr
Priority to ATGM50094/2022U priority patent/AT17655U1/de
Priority to DE202022103245.9U priority patent/DE202022103245U1/de
Publication of EP4265537A1 publication Critical patent/EP4265537A1/fr
Pending 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/34—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes
    • 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
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/008—Stiffening or reinforcing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/16—Cutting webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/04—Windows or other apertures, e.g. for viewing contents
    • 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
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/20—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free 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
    • B65D75/522—Inspection openings or windows
    • 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
    • B65D75/54—Cards, coupons, or other inserts or accessories
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/003—Articles enclosed in rigid or semi-rigid containers, the whole being wrapped
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/34—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes
    • B65D85/345—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes having a meshed or apertured closure to allow contents to breathe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling

Definitions

  • the present invention relates to a paper tubular bag, a method for its production and a paper tubular bag blank for the method according to the invention for producing the paper tubular bag according to the invention.
  • Tubular bags are particularly popular for packaging food.
  • the material used for the tubular bags is primarily plastic, which is typically provided as tape or rolls.
  • the band is arranged with a (unrolled) section over the packaged goods and bent into a tube around the packaged goods and then sealed under the packaged goods.
  • the tube is pressed together in front of and behind the packaged goods, and is also sealed and, if necessary, cut off, resulting in the filled tubular bag.
  • Plastic has several advantages as a material for tubular bags.
  • the plastic has to be used for this Sealing only needs to be heated sufficiently, meaning no additional adhesive is necessary.
  • the plastic can be colored or printed in any way, and in particular transparent areas of the tubular bag can be easily produced so that the packaged goods are visible from the outside. Furthermore, depending on the application, holes can easily be provided in the tubular bag, for example for packaging fruit.
  • plastic material is the environmental problem, particularly with regard to disposal and consumer perception.
  • the object of the present invention to provide an alternative tubular bag and a manufacturing process for it, which overcome the disadvantages mentioned.
  • the alternative tubular bag should meet current and future environmental requirements and should also be recognizable as such to consumers.
  • existing manufacturing systems that work with plastic material should be able to continue to be used, if possible, without or only with minor modifications.
  • the core of the present invention to solve the stated problem is to use paper as a material for an alternative tubular bag, i.e. to provide a paper tubular bag.
  • the paper material is immediately recognizable both visually and haptically to the user or consumer, which means that the paper tubular bag is immediately and easily recognizable to the user as being environmentally friendly.
  • By providing at least one hole in the paper tubular bag visibility of the packaged goods can be ensured, although holes are absolutely necessary anyway, especially when packaging food such as fruit.
  • the paper which must be sufficiently bendable in order to be formed into the necessary tube shape, as is usual in existing manufacturing systems, tears very easily in the area of the holes. Another essential point of the present invention is therefore to avoid this tearing.
  • a tubular paper bag comprising a bendable base paper sheet with two longitudinal edges which extend at least in sections with a directional portion parallel to a first direction and a first transverse edge and a second transverse edge, which extend at least in sections with a directional portion parallel to a second direction and the limit the base paper sheet as seen in the first direction, the base paper sheet being bent into a tubular shape as seen in the first direction and at least partially delimiting a receiving volume, the longitudinal edge regions of the base paper sheet having longitudinal edges overlapping and being sealed with one another in order to close the tubular shape as seen in a circumferential direction , where the recording volume is in the first direction, the second Direction and a third direction extends and the first direction, the second direction and the third direction are mutually normal to one another, wherein a first transverse edge region having the first transverse edge is sealed and a second transverse edge region having the second transverse edge is sealed to the tubular paper bag in the first direction to close, wherein the base paper
  • the bendable base paper sheet allows it to be easily bent into the tube shape, which is an important prerequisite for the production of the paper tubular bag with existing machines designed for plastics.
  • cardboard does not have sufficient flexibility, although cardboard differs from paper in particular in its higher basis weight of more than 150 g/m 2 , cf. e.g. https://de.wikipedia.org/wiki/Karton ( Material).
  • the longitudinal edges typically run essentially parallel to the first direction over a usually large section, with at least one curvature usually being present in the area of the sealed transverse areas, i.e. in the area of the ends of the paper tubular bag, with the course of the longitudinal edges in the area of the sealed Transverse areas have at least one directional component parallel to the third direction.
  • the first transverse edge is arranged in front of the second transverse edge.
  • the hose shape is to be understood in the broadest sense, in particular so that the hose shape is also present in the sealed transverse areas where the shape or Tube shape corresponds to that of a compressed tube without a clear cross section. In the area of the receiving volume, however, there is in any case a clear cross section of the tube shape.
  • the receiving volume is used to hold packaged goods, whereby the packaged goods can be arranged in the receiving volume before or during the manufacturing process of the paper tubular bag.
  • the sealing takes place by gluing using a known sealing adhesive, which can be, for example, a sealing wax, resulting in an adhesive seam, typically in the form of a glued strip.
  • a known sealing adhesive can be, for example, a sealing wax, resulting in an adhesive seam, typically in the form of a glued strip.
  • the sealing adhesive can be heated and/or the areas to be sealed can be put under pressure.
  • these or the ends of the tubular paper bag are typically pressed together during sealing, so that preferably essentially each part of the respective transverse edge region overlaps and is glued/sealed with another part of the respective transverse edge region.
  • the paper tubular bag - and thus the receiving volume - is closed when viewed parallel to the first direction.
  • the closing in the second and third directions or in the circumferential direction results from the production of the tube shape and the sealing of the longitudinal edge areas.
  • the base paper sheet In order to prevent the base paper sheet from tearing in the area of the minimum hole, the base paper sheet is to be glued to the reinforcing paper sheet - but only in the area Reinforcement section in order not to hinder or impair the problem-free bending to the hose shape.
  • sealing is also achieved using known means.
  • the already mentioned sealing adhesive in particular in the form of a sealing wax, can be provided for this purpose.
  • Another example of gluing the base paper sheet to the reinforcing paper sheet would be lamination, i.e. a flat bond, using a known laminating adhesive.
  • the at least one hole forms a through opening of the paper tubular bag from the outside into the receiving volume and vice versa.
  • the respective hole is present both in the base paper sheet and in the reinforcing paper sheet or forms a through opening which extends through the base paper sheet and through the reinforcing paper sheet and any layers that may be present in between, in particular any adhesive layer that may be present.
  • the reinforcing section viewed in the circumferential direction, only extends over a limited area of the base paper sheet, preferably only in a half-space that is defined by a plane , which contains a longitudinal axis of the tubular paper bag that runs parallel to the first direction, and that the reinforcing section extends at least in sections, preferably completely, over the base paper sheet when viewed in the first direction. It also extends accordingly the reinforcing paper sheet in the circumferential direction only over a limited area of the base paper sheet.
  • the reinforcing section is typically arranged only on one upper side of the paper tubular bag, the upper side being arranged opposite the overlapping longitudinal edge regions.
  • a tubular paper bag blank designed as a roll product can be provided for production with a correspondingly continuous reinforcing section or reinforcing paper sheet, which in turn favors the production of the paper tubular bag blank.
  • the reinforcing paper sheet is arranged on an outside of the paper tubular bag and is visible from the outside.
  • the reinforcing paper sheet is arranged in the paper tubular bag. I.e. the reinforcing paper sheet is arranged on an inside of the paper tubular bag, which faces into the receiving volume, and is not visible from the outside, so that the external appearance is not influenced or even disturbed by the reinforcing paper sheet. Accordingly, a free surface of the reinforcing paper sheet also points into the receiving volume.
  • a paper with a higher basis weight compared to the base paper sheet can be selected as the reinforcing paper sheet, since no strong bends are necessary in the area of the reinforcing section, but the basis weight of the reinforcing paper sheet is in can be chosen with a view to high tensile strength.
  • the basis weight of the base paper sheet can be selected for high flexibility.
  • a thin printing paper can be selected as the base paper sheet and a work printing paper as the reinforcing paper sheet.
  • the basis weight of the base paper sheet is in the range from 25 g/m 2 to 60 g/m 2 , preferably from 30 g/m 2 to 50 g/m 2
  • the basis weight of the reinforcing paper sheet is in the range from 20 g/m 2 to 120 g/m 2 , preferably from 80 g/m 2 to 120 g/m 2 , particularly preferably from 80 g/m 2 to 90 g/m 2 .
  • the choice of the basis weights, in particular the basis weight of the reinforcing paper sheet typically depends on the respective packaging system.
  • the reinforcing paper sheet can be connected to the base paper sheet by lamination, i.e. by surface gluing.
  • a sealing adhesive for the said bonding only partially and not - as is usual with lamination - over the entire surface, especially in the entire reinforcement section.
  • the reinforcing paper sheet is glued together with the base paper sheet, a sealing adhesive is only partially arranged in the reinforcement section, in particular in the respective area around the at least one hole.
  • suitable sealing adhesives are known per se.
  • sealing adhesive By arranging the sealing adhesive around the respective hole, the mechanical reinforcement against tearing caused by the sealing adhesive is largely ensured in the area of the respective hole, since the reinforcement caused by the adhesive used is particularly noticeable in these areas. At the same time, material in the form of sealing adhesive can be saved, which also has a cost-effective effect.
  • more than one hole can be provided per tubular paper bag.
  • a wide variety of shapes and sizes are conceivable, so that optimal coordination with the respective packaged goods is possible without any problems.
  • a plurality of holes are provided, the holes preferably having different shapes and/or sizes. The latter is to be understood as meaning that at least two holes have different shapes and/or are of different sizes, although at the same time holes of the same shape or the same size can exist.
  • a sealing adhesive is provided in at least one of the longitudinal edge regions in order to seal the longitudinal edge regions, the sealing adhesive being only partially arranged in the respective longitudinal edge region.
  • sealing adhesive By applying the sealing adhesive not over the entire surface in the respective longitudinal edge area, but only partially, for example in the form of a straight or wavy line, sealing adhesive can be further saved. This is not only favorable in terms of costs, but also in terms of environmental protection and the requirements for waste paper recycling.
  • a sealing adhesive is provided for sealing the first transverse edge region and the second transverse edge region, which is only partially arranged in the respective transverse edge region.
  • sealing adhesive is provided for the bonding of the base paper sheet to the reinforcing paper sheet and for the sealing of the longitudinal edge regions, the first transverse edge region and the second transverse edge region, where the weight fraction of the Sealing adhesive on the paper tubular bag is a maximum of 5%, preferably a maximum of 3.5%.
  • the low weight content ensures that the paper or the paper tubular bag can be easily recycled. In particular, the low weight proportion can be ensured by partially applying the sealing adhesive.
  • the paper tubular bag is manufactured from the paper tubular bag blank, using existing manufacturing machines (designed for plastic).
  • the paper tubular bag blank can be made available as roll goods, which is favorable in terms of costs and the manufacturing process.
  • the longitudinal edges run essentially parallel to one another and opposite one another.
  • the reinforcing area or the reinforcing paper sheet is spaced from the longitudinal edge areas.
  • the same sealing adhesive (e.g. a sealing wax) is preferably provided for the different longitudinal edge and transverse areas, particularly preferably also for bonding the reinforcing paper sheet to the base paper sheet.
  • the sealing adhesive is typically applied to both the base paper sheet and the reinforcing paper sheet, for example as a continuous, in particular straight or serpentine or wavy, line.
  • step B) The sealing of the longitudinal edge regions according to step B) is clearly carried out by means of the sealing adhesive which is arranged in at least one of the longitudinal edge regions.
  • step C) The sealing of the transverse areas according to step C) is clearly carried out using the sealing adhesive which is arranged in the transverse areas.
  • the transverse areas may have already become transverse edge areas, especially if the paper tubular bag blank has been trimmed accordingly.
  • the transverse areas may have already become transverse edge areas, especially if the paper tubular bag blank has been trimmed accordingly.
  • several paper tubular bags arranged one behind the other are produced at the same time and only after the transverse areas have been sealed are the paper tubular bags produced at the same time separated by cutting or trimming them in the area of the transverse areas.
  • the order can basically be arbitrary, i.e. first one then the other transverse area or vice versa.
  • the sealing of the transverse edge areas according to steps iii) and iv) is clearly carried out using the sealing adhesive is arranged in the transverse edge regions that are generated from the transverse regions.
  • the transverse regions become the first transverse edge region (see step i)) and the second transverse edge region (see step ii)) when the first transverse edge and the second transverse edge are produced by cutting off.
  • the first transverse edge region is spaced apart from the second transverse edge region of the tubular paper bag currently to be produced, which is why the transverse regions underlying these transverse edge regions are also spaced apart from one another.
  • the paper tubular bag blank is provided as roll goods and is continuously unrolled or unwound from a roll during the process, in the sequential production of paper tubular bags, not only the second transverse edge (and thus the second one) is cut off according to step ii). Transverse edge area) of the paper tubular bag currently to be produced, but at the same time also the first transverse edge (and thus the first transverse edge area) of the next paper tubular bag to be produced.
  • the successive transverse areas of the paper tubular bag blank, more precisely the paper tubular bag blank section, for the paper tubular bag currently to be produced and the next paper tubular bag to be produced are not necessarily spaced apart from one another and could also be viewed as a common - large or enlarged - transverse area which then creates the different transverse edge areas, namely the second transverse edge area of the paper tubular bag currently to be produced and the first transverse edge area of the next paper tubular bag to be produced.
  • the latter can already be arranged in the receiving volume before the actual production of the paper tubular bag begins, i.e. even before the paper tubular bag blank is bent into the tubular shape (which means that the receiving volume is only limited at least in sections), or during the Manufacturing process, as long as the paper tubular bag is not yet closed at both ends (in particular by sealing both the first and the second transverse edge area).
  • packaged goods are arranged in the receiving volume at the latest before step C) is completed, preferably already before or during step A). This means that there is great flexibility when it comes to the exact time at which the packaged goods are introduced, which in turn is favorable in view of different applications.
  • the paper tubular bag blank can be designed as roll goods, which is favorable with regard to the, in particular sequential, production of a large number of paper tubular bags. Accordingly, in a preferred embodiment of the method according to the invention, it is provided that the paper tubular bag blank is present as rolled goods on a roll, with the base paper sheet being unrolled from the roll at least in sections before step A).
  • a quasi-continuous transition between the removal from the roll and the bending into the tube shape is also conceivable, i.e. the section of the tubular paper bag blank or base paper sheet removed from the roll can theoretically be of almost any size before the bending begins.
  • a paper tubular bag blank for an inventive comprising a bendable base paper sheet with two longitudinal edges, sealing adhesive being applied at least in one of two longitudinal edge regions having the longitudinal edges, sealing adhesive being applied in transverse regions which run transversely to the longitudinal edges and connect them to one another, wherein A flat reinforcing section is provided between the longitudinal edge regions, in which the base paper sheet is glued to a reinforcing paper sheet and at least one hole passing through the paper tubular bag blank is provided in each piece region of the reinforcing section, the respective piece region being between the longitudinal edge regions and between two transverse regions, which follow one another and are spaced apart from one another by a distance measured along the longitudinal edges, the paper tubular bag blank preferably being designed as a roll product.
  • Fig. 1 shows a schematic top view of an underside 20 of an embodiment of a paper tubular bag blank 15 according to the invention for producing an embodiment of a paper tubular bag 1 according to the invention, the underside 20 being provided for at least partially forming an inside 22 of the paper tubular bag, cf. Fig. 3 .
  • the paper tubular bag blank 15 comprises a bendable base paper sheet 2, which in the illustrated embodiment has a basis weight in the range of 30 g/m 2 to 50 g/m 2 .
  • the base paper sheet 2 has two longitudinal edges 6, in one of two longitudinal edges 6 having longitudinal edge regions 8 (in Fig. 1 and Fig. 2 indicated by the dotted line) sealing adhesive 17 is applied.
  • the sealing adhesive 17 is in Fig. 1 Longitudinal edge region 8 visible on the right side is not applied flatly, but only partially, in the form of a straight line, with the sealing adhesive 17 being arranged on the underside 20.
  • the base paper sheet has 2 transverse areas 19, 19 '(in Fig. 1 and Fig. 2 also indicated by the dotted line), which run transversely to the longitudinal edges 6 and connect them to one another. Even in the transverse areas 19, 19 ', sealing adhesive 17 is not flat, but only partially in shape applied in a straight line, with the sealing adhesive 17 being arranged on the underside 20.
  • the sealing adhesive 17 is a known sealing wax.
  • a flat reinforcing section 11 is provided between the longitudinal edge regions 8, in which the base paper sheet 2 is glued to a reinforcing paper sheet 13, with the bonding being carried out flatly in the exemplary embodiment shown by known lamination.
  • the reinforcing paper sheet 13 has a basis weight in the range of 80 g/m 2 to 90 g/m 2 .
  • the reinforcing section 11 or the reinforcing paper sheet 13 extends parallel to the longitudinal edges 6 over the entire paper tubular bag blank 15.
  • Piece areas 16 or one piece area 16 of the reinforcing section 11 are/is limited by the transverse areas 19, 19 'or lie the piece area 16 between the transverse areas 19, 19 ', which follow one another and are spaced apart from one another by a distance measured along the longitudinal edges 6.
  • a plurality of circular holes 14 are provided in the piece area 16, the holes 14 completely penetrating the paper tubular bag blank 15 and correspondingly forming through openings in the paper tubular bag blank 15.
  • the paper tubular bag blank 15 is designed as a roll product and is unrolled from a roll (not shown) during the production of the paper tubular bag 1, which will be explained in more detail below, and transversely to the longitudinal edges for the paper tubular bag 1 to be produced - or cut off. In this way, a large number of paper tubular bags 1 can be produced sequentially and without any problems.
  • Fig. 1 and Fig. 2 which shows a top side 21 of the paper tubular bag blank 15 opposite the bottom 20, the paper tubular bag blank 15 or the base paper sheet 2 for the production of a paper tubular bag 1 is completely unrolled and a subsequent section of the base paper sheet 2 which has not yet been completely unrolled , indicated by dashed lines.
  • the top 21 is intended to form at least sections of an outside 23 of the paper tubular bag 1, cf. Fig. 3 . Accordingly, the reinforcing paper sheet 13 is not visible to a user on the outside 23, see also Fig. 2 .
  • the base paper sheet 2 extends in Fig. 1 and Fig. 2 with the longitudinal edges 6 parallel to a first direction 3 and with the transverse areas 19, 19 'parallel to a second direction 4.
  • the first direction 3, the second direction 4 and a third direction 5 are mutually normal to one another.
  • the base paper sheet 2 is delimited by a first transverse edge 7a, the first transverse edge 7a being arranged in a first transverse edge region 10a, which coincides with the transverse region 19 in the illustrated embodiment.
  • packaged goods 18, which are in Fig. 3 is indicated by dashed lines and which can be, for example, vegetables in a cardboard tray, arranged in the receiving volume 9 before or during step A).
  • the paper tubular bag blank 15 or the base paper sheet 2 is unrolled from the roll (not shown) at least in sections before step A).
  • the resulting tubular paper bag 1 comprises the bendable base paper sheet 2 with the longitudinal edges 6, which extend at least in sections with a directional portion parallel to the first direction 3, as well as the first transverse edge 7a and the second transverse edge 7b, which extend at least in sections with a directional portion parallel to the second direction 4, see. Fig. 3 .
  • the base paper sheet 2 is bent into a tubular shape when viewed in the first direction 3 and at least partially delimits the receiving volume 9, the longitudinal edge regions 8 of the base paper sheet 2 having the longitudinal edges 6 overlapping and being sealed with one another in order to close the tubular shape as seen in a circumferential direction 12.
  • the first transverse edge region 10a having the first transverse edge 7a is sealed and the second transverse edge region 10b having the second transverse edge 7b is sealed in order to close the tubular paper bag 1 in the first direction 3.
  • the holes 14 in the reinforcement section 11 form through openings from the receiving volume 9 to the outside.
  • the reinforcing section 11 in the illustrated embodiment of the tubular paper bag 1 extends only over a limited area of the base paper sheet 2, namely in a half-space which is defined by a plane which has a longitudinal axis 24 (in Fig. 3 indicated by the dash-dotted line) of the paper tubular bag 1 contains. In the view of Fig. 3 This half-space extends upwards from the longitudinal axis 24 (in the third direction 5).
  • the reinforcing paper sheet 13 is arranged inside, i.e. in the tubular paper bag 1, and is therefore not visible from the outside.
  • its weight share in the paper tubular bag 1 according to the exemplary embodiment shown is a maximum of 3.5%. Accordingly, the paper tubular bag 1 can be easily recycled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
EP22169291.6A 2022-04-21 2022-04-21 Sachet tubulaire en papier et son procédé de fabrication Pending EP4265537A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP22169291.6A EP4265537A1 (fr) 2022-04-21 2022-04-21 Sachet tubulaire en papier et son procédé de fabrication
ATGM50094/2022U AT17655U1 (de) 2022-04-21 2022-06-09 Papierschlauchbeutel und verfahren zu dessen herstellung
DE202022103245.9U DE202022103245U1 (de) 2022-04-21 2022-06-09 Papierschlauchbeutel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22169291.6A EP4265537A1 (fr) 2022-04-21 2022-04-21 Sachet tubulaire en papier et son procédé de fabrication

Publications (1)

Publication Number Publication Date
EP4265537A1 true EP4265537A1 (fr) 2023-10-25

Family

ID=81346591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22169291.6A Pending EP4265537A1 (fr) 2022-04-21 2022-04-21 Sachet tubulaire en papier et son procédé de fabrication

Country Status (3)

Country Link
EP (1) EP4265537A1 (fr)
AT (1) AT17655U1 (fr)
DE (1) DE202022103245U1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH249529A (de) * 1945-02-01 1947-06-30 Meng Fritz Verpackungshülle.
DE29506855U1 (de) * 1994-10-06 1995-07-13 Nord-West Verpackung Karl Götze GmbH & Co. KG, 51789 Lindlar Verpackungsbeutel aus Papier, Kunststoff o.dgl.
FR2836130A1 (fr) * 2002-02-21 2003-08-22 Meseguer Cristobal Sa Bobine pour la fabrication de sacs pour produits horticoles et similaires
FR2837474A3 (fr) * 2002-03-21 2003-09-26 Meseguer Cristobal Sa Bande tubulaire pour l'obtention de sacs pour produits horticoles et similaire
WO2018073462A1 (fr) * 2016-10-20 2018-04-26 Girnet Internacional, S.L. Sac pour l'emballage de produits hortofruticoles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030076464A (ko) * 2003-05-14 2003-09-26 이종학 농수산물용 포장봉지
KR101890129B1 (ko) * 2016-12-06 2018-08-21 대명물산 주식회사 다기능 포장지의 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH249529A (de) * 1945-02-01 1947-06-30 Meng Fritz Verpackungshülle.
DE29506855U1 (de) * 1994-10-06 1995-07-13 Nord-West Verpackung Karl Götze GmbH & Co. KG, 51789 Lindlar Verpackungsbeutel aus Papier, Kunststoff o.dgl.
FR2836130A1 (fr) * 2002-02-21 2003-08-22 Meseguer Cristobal Sa Bobine pour la fabrication de sacs pour produits horticoles et similaires
FR2837474A3 (fr) * 2002-03-21 2003-09-26 Meseguer Cristobal Sa Bande tubulaire pour l'obtention de sacs pour produits horticoles et similaire
WO2018073462A1 (fr) * 2016-10-20 2018-04-26 Girnet Internacional, S.L. Sac pour l'emballage de produits hortofruticoles

Also Published As

Publication number Publication date
AT17655U1 (de) 2022-10-15
DE202022103245U1 (de) 2022-07-04

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