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EP3891080B1 - Sac et film tubulaire destiné à fabriquer un tel sac - Google Patents

Sac et film tubulaire destiné à fabriquer un tel sac Download PDF

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Publication number
EP3891080B1
EP3891080B1 EP19816619.1A EP19816619A EP3891080B1 EP 3891080 B1 EP3891080 B1 EP 3891080B1 EP 19816619 A EP19816619 A EP 19816619A EP 3891080 B1 EP3891080 B1 EP 3891080B1
Authority
EP
European Patent Office
Prior art keywords
tear
bag
strip
film tube
lines
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.)
Active
Application number
EP19816619.1A
Other languages
German (de)
English (en)
Other versions
EP3891080C0 (fr
EP3891080A1 (fr
Inventor
Waldemar REPP
Reinhard Bergmann
Frank HEERMANN
Carsten Michel
Christoph REINKER
Uwe Wiegand
Rolf ZUM DOHME
Jürgen Sundermann
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.)
Bischof and Klein SE and Co KG
Original Assignee
Bischof and Klein SE and Co KG
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 Bischof and Klein SE and Co KG filed Critical Bischof and Klein SE and Co KG
Publication of EP3891080A1 publication Critical patent/EP3891080A1/fr
Application granted granted Critical
Publication of EP3891080C0 publication Critical patent/EP3891080C0/fr
Publication of EP3891080B1 publication Critical patent/EP3891080B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B65D75/5844—Tear-lines provided in a wall portion for tearing out a portion of the wall the portion of the wall being a narrow strip, e.g. between lines of weakness
    • 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
    • B65D33/06—Handles
    • B65D33/065—Integral handles
    • 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
    • B65D75/06—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes
    • B65D75/12—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes with the ends of the tube closed by flattening and heat-sealing

Definitions

  • the invention relates to a sack with a filling space for bulk material, which is delimited by a lower base, a peripheral wall and an upper filling space closure facing away from the lower base.
  • the sack has a tear strip for releasing an opening field of the sack, which is delimited by an upper weakening line and a lower weakening line, both weakening lines running parallel to the upper filling space closure and the upper weakening line being positioned between the upper filling space closure and the lower weakening line.
  • Such a bag is, for example, from the EP 0 620 157 B1 known.
  • the weakening lines and also a front line that runs perpendicular to the two weakening lines and where the tear strip begins are each perforated.
  • the front line perforation is pressed in with a finger of the person opening the bag and then the tear strip in this area is grasped from the inside of the bag material and from the outside of the bag material with the thumb and index finger and further torn open along the weakening lines.
  • handling the opening is not clean, as the operator comes into contact with the contents of the bag when tearing it open and also the perforation along the forehead line is not always carried out correctly.
  • More bags are from DE 38 36 227 A1 , FR 2 951 439 A1 , EP 0 779 222 A1 , EN 20 2016 102623 U1 , EP 2 059 456 A1 , WO91/06488 A1 , WO 2016/100852 A1 and WO 00/43272 A1 known.
  • the invention is based on the object of providing a bag of the type mentioned at the beginning with improved opening options.
  • the invention is achieved by a sack according to claim 1, in which the sack has a longitudinal seam running transversely to the upper filling space closure, the upper and lower weakening lines beginning in the region of the longitudinal seam and the longitudinal seam being weaker in the region between the two weakening lines than above the upper weakening line and below the lower weakening line.
  • the tear strip therefore adheres less strongly to the sack material located in the region of the longitudinal seam below the tear strip and can easily be fixed between the thumb and index finger of an operator, first removed from the sack material located below the tear strip in the region of the longitudinal seam and then torn open along the weakening lines. The operator's fingers do not touch the contents in the sack.
  • the bag advantageously has a disruptive substance in the area of the longitudinal seam between the two weakening lines that hinders the welding process.
  • This is particularly preferably formed by a varnish that is applied in the area of the longitudinal seam between the weakening lines in the manner of a grid either on the side of the tear strip facing the filling area or on the side facing the filling area. opposite side of the bag material below the tear strip.
  • the varnish is preferably selected so that the adhesion of an additional melt to form the longitudinal seam on the varnish is significantly weaker than on the remaining bag material in the area of the longitudinal seam.
  • a flag is arranged at the beginning of the tear strip between the two weakening lines, which extends beyond the longitudinal seam in the opposite direction to the tearing direction and does not adhere to the material of the wall of the bag. With the help of the flag, an operator can particularly easily grip the beginning of the tear strip and open the tear strip in the tearing direction along the weakening lines.
  • the flag is particularly preferably formed by pulling the upper film slightly beyond the longitudinal seam over the lower film web in the circumferential direction. This creates a film strip along the longitudinal seam that is not connected to the film underneath.
  • the two weakening lines then also extend beyond the longitudinal seam to the lateral end of the upper film of the bag. However, the weakening lines do not extend to the lower film in the area of the longitudinal seam.
  • the positioning indication of the beginning of the weakening lines in the area of the longitudinal seam is to be understood in the sense of this invention in such a way that the weakening lines either begin where the longitudinal seam runs or, when the aforementioned flag is formed, extend slightly beyond the longitudinal seam against the tearing direction.
  • the bag material in the area of the ends of the weakening lines and the material and the width of the tear strip are designed in such a way that the resistance to tearing the tear strip beyond the ends of the weakening lines is greater than the resistance to tearing the tear strip off the bag.
  • the bag can therefore only be opened up to the end of the weakening lines and not beyond, since if the tear strip is pulled further, the bag does not open any further, but the tear strip tears off.
  • the ends of the weakening lines are understood to mean the side of the weakening lines towards which the tear strip is opened during tearing along the weakening lines, exposing the opening field.
  • the bag consists of a film which can be constructed in one or more layers.
  • the bag is a side-gusseted bag with a front side and a back side, which are connected to one another via a first side wall and a second side wall, wherein the side walls are each formed by side gussets.
  • the weakening lines extend across at least 80% of the width of the front side or the width of the back side of the bag, in particular across the entire width of the front side or across the entire width of the back side.
  • the area of the side gussets remains free of the weakening lines. This design allows the desired V-shaped chute to be formed below the opening field in a side-gusseted bag, which is particularly advantageous due to the positioning of the lower weakening line.
  • the upper filling chamber closure therefore has, in a particularly preferred embodiment of the invention, a fingertip contact area on its inside facing the filling chamber.
  • the fingertip contact area is formed by a material fold between a first leg and a second leg of the bag, the first leg extending from the upper weakening line to the material fold and the second leg adjoining it starting from the material fold.
  • the material fold can either be formed in a one-piece film by a fold or the introduction of a seam or by two films being connected to one another with a sealing seam.
  • the first leg and the second leg of the bag are each formed by the bag material surrounding the filling chamber.
  • the bag is dimensioned and the tear strip positioned in such a way that the two legs of a bag filled with product, with the opening panel open, can be pulled open when the bag is carried by engaging in the opening field encloses an angle of no more than 135°.
  • the bag is carried by the hand of an operator, for example, i.e. an operator reaches into the opening field with one hand and the first leg rests on the operator's hand, while the bag, carried by the hand, hangs down from it.
  • the dimensions of the bag are thus selected in such a way that an angle of no more than 135° is formed in the aforementioned state of the bag. It has been shown that this design makes it possible to carry the bag safely by reaching into the open opening field.
  • the distance between the upper weakening line and the material bevel is 30 to 65 mm, particularly preferably 45 to 55 mm, and the distance between the lower weakening line and the upper weakening line is 15 to 25 mm.
  • the peripheral wall of the bag has a front and a back, with both weakening lines being centered either on the front or on the back of the bag and extending over 15 to 35% of the bag circumference.
  • the bag is opened along the weakening lines, whereby the position of the weakening lines determines the position of the opening field in the bag.
  • the opening field has the shape of a rectangle with a height corresponding to the distance between the weakening lines and a length corresponding to the length of the two weakening lines.
  • the opening field is centered either on the front or on the back of the bag and extends over 15 to 35% of the bag's circumference.
  • the bag material between the upper material edge and the upper weakening line and thus the upper edge of the opening field can be used together with the material of the upper material edge for the hand of the other arm of the person emptying the bag.
  • the resulting handle is voluminous and at the same time firm enough to allow the bag to be easily emptied. If the upper weakening line and thus the upper edge of the opening field are moved further towards the bottom of the bag, the fingers of the person to be operated no longer additionally grip the upper material edge, which means that the handle loses a lot of stability and the person emptying the bag loses control over the bag.
  • the handle becomes very narrow and uncomfortable. Especially if the bag is heavier, an operator would have to carry the weight primarily with the fingertips and no longer with the entire hand.
  • the weight of the bag can be more easily balanced when emptying.
  • the two weakening lines By keeping the two weakening lines at a distance of 15 to 25 mm from each other and thus by the targeted height of the opening field in conjunction with the extension of the weakening lines and thus also of the opening field Over 15 to 35% of the circumference of the bag, a V-shaped chute is created along the lower edge of the opening field, resulting from the lower weakening line, which enables targeted dosing and pouring direction.
  • a person emptying the sack grasps the sack with the hand of the first arm below the bottom of the sack. With the hand of the second arm, the person reaches into the opening area and takes the sack material between the upper edge of the opening area and the material edge, as well as the material edge itself, in the form of a stable handle. As soon as the person holds the sack at an angle by lifting the bottom or lowering the opening area, the lower edge of the opening area forms a V-shaped chute that extends outwards, through which the bulk material can be dispensed very easily and in a well-dosed manner.
  • the upper former filling space closure is formed by a transverse seam, whereby the transverse seam also forms the material fold inside the bag.
  • This embodiment is particularly present when the bag is a side-gusseted bag.
  • the upper filling chamber closure is formed by an upper base and the material fold is formed by the transition of the surrounding wall of the bag to the upper base.
  • the material fold can either be a fold made in a film or the material
  • the bag is additionally sealed in this area. This design is particularly present when the bag is a valve bag.
  • the invention is also achieved by a film tube according to claim 8 for producing bags of the aforementioned type.
  • the film tube has a plurality of tear strips arranged parallel to one another at equal distances to release an opening field.
  • the tear strips are each delimited by an upper weakening line and a lower weakening line.
  • the film tube is formed from a film web that is folded over to form a tube, the film tube having a longitudinal seam running along the film tube that connects the two superimposed lateral ends of the film web to one another, thereby forming the film tube.
  • the wall of the aforementioned bags is of course also designed accordingly. This design of the film tube allows a bag of the aforementioned type according to the invention to be produced from the film tube, with the advantages mentioned in connection with the bags according to the invention.
  • a flag is arranged, which extends beyond the longitudinal seam in the opposite direction to the tearing direction and does not adhere to the material of the wall of the film tube.
  • the film tube has a plurality of material bending areas arranged at constant intervals transversely to the longitudinal extension of the film tube for introducing a material bend each, which is each assigned to a tear strip.
  • the distance between the upper weakening line and the assigned material bending area is 30 to 65 mm, in particular 45 to 55 mm, and the distance between the lower weakening line and the upper weakening line of each tear strip is 15 to 25 mm.
  • the weakening lines are arranged centrally on the film tube in its flat state and extend over 15 to 35% of the film tube circumference. This design of the film tube allows a sack of the aforementioned type to be made from the film tube with the advantages already listed for this sack above.
  • the films of the film tube in the area of the ends of the weakening lines and the material and the width of the tear strip are designed in such a way that the resistance to tearing of the tear strip beyond the ends of the weakening lines is greater than the resistance to tearing of the tear strip from the film tube.
  • a sack of the aforementioned type can be produced from the film tube according to the invention with the advantages mentioned for this sack.
  • Fig. 1 to 3 show a bag 2 according to the invention with a filling space for bulk material, which is delimited by a lower base 4, a circumferential wall 6 and an upper filling space closure 8 facing away from the lower base 4.
  • the bag 2 has a tear strip 10 for releasing an opening field 12 of the bag 2, which is delimited by an upper weakening line 14 and a lower weakening line 16. Both weakening lines 14, 16 run parallel to the upper filling space closure 8 and the upper weakening line 14 is positioned between the upper filling space closure 8 and the lower weakening line 16.
  • the bag 2 has a longitudinal seam 18 running transversely to the upper filling space closure 8.
  • the upper and lower weakening lines 14, 16 each begin in the area of the longitudinal seam 18.
  • the longitudinal seam 18 is weaker in the area between the two weakening lines 14, 16 than above the upper weakening line 14 and below the lower weakening line 16.
  • a flag 22 is arranged which extends beyond the longitudinal seam 18 in the opposite direction to the tearing direction, the tearing direction being indicated by the arrow 24 in the exemplary embodiment, and does not adhere to the material 26 of the wall 6 of the sack 2 in this area.
  • the bag material in the area of the ends 28 of the weakening line 14, 16 and the material and the width of the tear strip 10 are designed in such a way that the resistance to tearing of the tear strip 10 over the ends 28 of the Weakening lines 14, 16 is greater than the resistance against tearing of the tear strip 10 from the bag 2.
  • the bag 2 is a side-gusseted bag with a front side 30 and a rear side opposite it, which is not visible in the embodiment.
  • the front side 30 and the rear side are connected to one another via a first side wall 32 and a second side wall, the position of which is indicated by arrow 34.
  • the side walls 32, 34 are each formed by side folds 36 and the weakening lines 14, 16 extend across at least 80% of the width a of the front side 30.
  • the area of the side folds 36 is free of the weakening lines 14, 16.
  • the upper filling chamber closure 8 has a fingertip contact area 38 on its inner side facing the filling chamber, which is formed by a material bevel 40 between a first leg 42 and a second leg, which cannot be seen in the figures but whose position is indicated by the arrow 44, of the bag 2.
  • the first leg 42 extends from the upper weakening line 16 to the material bevel 40 and the second leg 44 adjoins it starting from the material bevel 40.
  • the two legs 42, 44 enclose an angle of no more than 135° when the bag 2 is carried by engaging in the opening field 12. This holding position is approximately in Fig.3 shown, where in Fig.3 the bag 2 is additionally held by a second hand underneath the bag 2.
  • the distance b of the upper weakening line 14 to the material bevel 40 is 30 to 65 mm and particularly preferably 45 to 55 mm.
  • the distance c of the lower weakening line 16 to the upper weakening line 14 is 15 to 25 mm.
  • the peripheral wall 6 of the bag here also has a front side 30 and a back side that is not visible in the exemplary embodiment, with both weakening lines 14, 16 being arranged centered on the front side of the bag 2 and extending over 15 to 35% of the bag circumference.
  • the upper filling chamber closure 8 is formed by a transverse seam 46 and the transverse seam 46 also forms the material bevel 40 in the interior of the bag 2.
  • Fig.4 shows a section of a film tube 48 according to the invention for producing the aforementioned bags 2 according to the invention.
  • the film tube 48 has a plurality of tear strips 10 arranged parallel to one another at constant distances to release an opening field 12, each of which is delimited by an upper weakening line 14 and a lower weakening line 16.
  • the film tube 48 also has a longitudinal seam 18 running along the film tube 48.
  • the upper and lower weakening lines 14, 16 each begin in the area of the longitudinal seam 18 and the longitudinal seam 18 is weaker in the area between the upper and lower weakening lines 14, 16 assigned to a tear strip 10 than above the upper weakening line 14 and below the lower weakening line 16.
  • a flag 22 is arranged at the beginning 20 of each tear strip 10 between the two weakening lines 14, 16 assigned to this tear strip 10, which extends beyond the longitudinal seam 18 in the opposite direction to the tearing direction 24 and does not adhere to the material 26 of the wall 6 of the sack 2.
  • the film tube 48 also has a plurality of material bending areas 52 arranged at constant intervals transversely to the longitudinal extension, shown by the arrow 50 of the film tube 48, for introducing a material bend 40 in each case.
  • the distance b of the upper weakening line 14 of the assigned tear strip 10 to the material bending area 52 is 30 to 65 mm and in particular 45 to 55 mm.
  • the distance c between the lower weakening line 16 and the upper weakening line 14 of each tear strip is 15 to 25 mm.
  • the weakening lines 14, 16 are shown on the film tube 48 in its flat state in Fig.4 , arranged centrally and extend over 15 to 35% of the film tube circumference.
  • the film of the film tube 48 in the region of the ends 28 of the weakening lines 14, 16 and the film and the width of the tear strip 10 are designed such that the resistance to tearing of the tear strip 10 beyond the ends 28 of the weakening lines 14, 16 is greater than the resistance to tearing of the tear strip 10 from the film tube 48.

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

Claims (11)

  1. Sac (2) avec un espace de remplissage pour un produit en vrac, qui est délimité par un fond inférieur (4), une paroi périphérique (6) et une fermeture d'espace de remplissage supérieure (8) détournée du fond inférieur (4), et avec au moins une bande de déchirage (10) pour libérer un champ d'ouverture (12) du sac (2), qui est délimitée par une ligne d'affaiblissement supérieure (14) et une ligne d'affaiblissement inférieure (16), les deux lignes d'affaiblissement (14, 16) s'étendant parallèlement à la fermeture supérieure de l'espace de remplissage (8) et la ligne d'affaiblissement supérieure (14) étant positionnée entre la fermeture supérieure de l'espace de remplissage (8) et la ligne d'affaiblissement inférieure (16), le sac (2) présentant un joint longitudinal (18) s'étendant transversalement à la fermeture supérieure de l'espace de remplissage (8), les lignes d'affaiblissement supérieure et inférieure (14, 16) commençant dans la zone du joint longitudinal (18) et le joint longitudinal (18) étant réalisé plus faible dans la zone entre les deux lignes d'affaiblissement (14, 16) qu'au-dessus de la ligne d'affaiblissement supérieure (14) et au-dessous de la ligne d'affaiblissement inférieure (16), le sac (2) étant un sac à soufflets latéraux avec un côté avant (30) et un côté arrière qui sont reliées l'un à l'autre par l'intermédiaire d'une première paroi latérale (32) et d'une deuxième paroi latérale (34), les parois latérales (32, 34) étant formées chacune par des plis latéraux (36), et les lignes d'affaiblissement (14, 16) s'étendant transversalement sur au moins 80 % de la largeur (a) du côté avant (30) ou de la largeur du côté arrière, notamment sur toute la largeur (a) du côté avant (30) ou toute la largeur du côté arrière, mais la zone des plis latéraux (36) étant exempte des lignes d'affaiblissement (14, 16), et la fermeture supérieure de l'espace de remplissage (8) présentant une zone d'appui du bout des doigts (38) sur son côté intérieur tourné vers l'espace de remplissage, qui est formée par un pliage de matériau (40) entre une première branche (42) et une deuxième branche (44) du sac (2), la première branche (42) s'étendant de la ligne d'affaiblissement supérieure (14) jusqu'au pliage de matériau (40) et la deuxième branche (44) s'y raccordant en commençant par le pliage de matériau (40), caractérisé en ce que les deux branches (42, 44), dans l'état avec champ d'ouverture (12) ouvert d'un sac (2) rempli de produit de remplissage, forment un angle ne dépassant pas 135 degrés lorsque le sac (2) est porté par engagement dans le champ d'ouverture (12), et en ce que la distance (b) de la ligne d'affaiblissement supérieure (14) au pliage de matériau (40) est de 30 à 65 mm, la distance (c) de la ligne d'affaiblissement inférieure (16) à la ligne d'affaiblissement supérieure (14) est de 15 à 25 mm et la paroi périphérique (6) du sac (2) présente un côté avant (30) et un côté arrière, les deux lignes d'affaiblissement (14, 16) étant agencées de manière centrée soit sur le côté avant (30) soit sur le côté arrière du sac (2) et s'étendant sur 15 à 35 % de la circonférence du sac.
  2. Sac (2) selon la revendication 1, caractérisé en ce que le sac (2) présente, dans la zone du joint longitudinal (18) entre les deux lignes d'affaiblissement (14, 16), une substance perturbatrice empêchant un processus de soudage.
  3. Sac (2) selon l'une quelconque des revendications précédentes, caractérisé par un fanion (22) agencé au début de la bande de déchirage (10) entre les deux lignes d'affaiblissement (14, 16), qui dépasse du joint longitudinal (18) à l'encontre de la direction de déchirage (24) et qui n'adhère pas au matériau de la paroi (6) du sac (2).
  4. Sac (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau du sac dans la zone des extrémités (28) des lignes d'affaiblissement (14, 16) et le matériau et la largeur de la bande de déchirage (10) sont réalisés tels que la résistance au déchirage de la bande de déchirage (10) au-delà des extrémités (28) des lignes d'affaiblissement (14, 16) est supérieure à la résistance à l'arrachement de la bande de déchirage (10) du sac (2).
  5. Sac (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que le sac (2) est constitué d'une feuille.
  6. Sac (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que la fermeture supérieure de l'espace de remplissage (8) est formée par un joint transversal (46) et le joint transversal (46) à l'intérieur du sac (2) réalise également le pliage de matériau (40).
  7. Sac (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que la fermeture supérieure de l'espace de remplissage (8) est formée par un fond supérieur et le pliage de matériau (40) forme la transition entre la paroi périphérique (6) et le fond supérieur.
  8. Tube de feuille (48) pour la fabrication de sacs (2) selon l'une quelconque des revendications précédentes, avec une pluralité de bandes de déchirage (10) agencées parallèlement les unes aux autres à des distances constantes pour libérer respectivement un champ d'ouverture (12), qui sont délimitées respectivement par une ligne d'affaiblissement supérieure (14) et une ligne d'affaiblissement inférieure (16), les deux lignes d'affaiblissement (14, 16) s'étendant parallèlement l'une à l'autre, avec un joint longitudinal (18) s'étendant le long du tube de feuille (48), les lignes d'affaiblissement supérieure et inférieure (14, 16) commençant respectivement dans la zone du joint longitudinal (18) et le joint longitudinal (18) étant respectivement réalisé plus faible dans la zone entre les lignes d'affaiblissement supérieure et inférieure (14, 16) associées à une bande de déchirage (10) qu'au-dessus de la ligne d'affaiblissement supérieure (14) et au-dessous de la ligne d'affaiblissement inférieure (16), et avec une pluralité de zones de pliage de matériau (52) agencées à des distances constantes respectivement transversalement à l'extension longitudinale (50) du tube de feuille (48) pour l'introduction respectivement d'un pliage de matériau (40) qui est associé respectivement à une bande de déchirage (10), la distance (b) entre la ligne d'affaiblissement supérieure (14) de la bande de déchirage (10) associée et la zone de pliage de matériau (52) étant de 30 à 65 mm, la distance (c) entre la ligne d'affaiblissement inférieure (16) et la ligne d'affaiblissement supérieure (14) de chaque bande de déchirage (10) étant de 15 à 25 mm, et les lignes d'affaiblissement (14, 16) étant agencées de manière centrée sur le tube de feuille (14) dans son état aplati et s'étendant sur 15 à 35 % de la circonférence du tube de feuille.
  9. Tube de feuille (48) selon la revendication 8, caractérisé en ce que le tube de feuille (48) présente, dans la zone du joint longitudinal (18), entre les lignes d'affaiblissement supérieure et inférieure (14, 16) associées à une bande de déchirage (10), une liaison perturbatrice entravant un processus de soudage.
  10. Tube de feuille (48) selon l'une quelconque des revendications 8 ou 9 précédentes, caractérisé par un fanion (22) agencé au début (20) de chaque bande de déchirage (10) entre les deux lignes d'affaiblissement (14, 16) associées à cette bande de déchirage (10), qui dépasse du joint longitudinal (18) à l'encontre de la direction de déchirage (24) et qui n'adhère pas au matériau de la paroi (6) du tube de feuille (48).
  11. Tube de feuille (48) selon l'une quelconque des revendications 8 à 10, caractérisé en ce que la feuille du tube de feuille (48) dans la zone des extrémités (28) des lignes d'affaiblissement (14, 16) et la feuille et la largeur de la bande d'arrachage (10) sont réalisées de telle sorte que la résistance au déchirage de la bande de déchirage (10) au-delà des extrémités (28) des lignes d'affaiblissement (14, 16) est supérieure à la résistance à l'arrachement de la bande de déchirage (10) du tube de feuille (28).
EP19816619.1A 2018-12-03 2019-12-03 Sac et film tubulaire destiné à fabriquer un tel sac Active EP3891080B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202018106868.7U DE202018106868U1 (de) 2018-12-03 2018-12-03 Sack und Folienschlauch zur Herstellung eines derartigen Sackes
PCT/EP2019/083529 WO2020115062A1 (fr) 2018-12-03 2019-12-03 Sac et film tubulaire destiné à fabriquer un tel sac

Publications (3)

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EP3891080A1 EP3891080A1 (fr) 2021-10-13
EP3891080C0 EP3891080C0 (fr) 2024-09-18
EP3891080B1 true EP3891080B1 (fr) 2024-09-18

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US (1) US11787615B2 (fr)
EP (1) EP3891080B1 (fr)
CN (1) CN113039133A (fr)
AU (1) AU2019392638B2 (fr)
CA (1) CA3121841A1 (fr)
DE (1) DE202018106868U1 (fr)
MX (1) MX2021006394A (fr)
NZ (1) NZ775476A (fr)
WO (1) WO2020115062A1 (fr)

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CN120156784B (zh) * 2025-05-19 2025-08-05 国澳(福建)食品有限公司 一种用于肥牛加工的转运装置

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WO2000043272A1 (fr) * 1999-01-21 2000-07-27 Alusuisse Technology & Management Ag Emballage constitue d'un materiau composite sous forme de film et procede de production d'un tel emballage
EP2059456B1 (fr) * 2006-09-04 2011-11-09 Cadbury Holdings Limited Emballage amélioré pourvu de lignes d'affaiblissement
WO2016100852A1 (fr) * 2014-12-19 2016-06-23 Printpack Illinois, Inc. Emballage souple à ouverture facile

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WO1995001922A1 (fr) * 1993-07-08 1995-01-19 Teich Aktiengesellschaft Emballage muni d'un systeme d'ouverture se presentant sous forme de bande d'arrachage
IT1273179B (it) * 1994-05-05 1997-07-07 Sales Spa Dispositivo di apertura per contenitori flessibili, contenitore provvisto di tale dispositivo e procedimento per la sua applicazione
DE69620362T2 (de) 1995-11-27 2003-04-03 Nippon Paper Industries Co. Ltd., Tokio/Tokyo Seitlich leicht zu öffnende Papierverpackung
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EP3375726B1 (fr) * 2004-12-07 2019-10-23 Idemitsu Unitech Co., Ltd. Fermeture à glissière et sac doté d'une telle fermeture
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FR2951439B1 (fr) 2009-10-15 2011-11-25 Veriplast Flexible Sac d'emballage en matiere plastique
GB201005354D0 (en) 2010-03-30 2010-05-12 Cadbury Holdings Ltd Packaging
DE202016102623U1 (de) 2016-05-17 2016-06-23 Mondi Consumer Packaging Technologies Gmbh Flachliegender, unbefüllter Seitenfaltenbeutel

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WO1991006488A1 (fr) * 1989-10-27 1991-05-16 Teich Aktiengesellschaft Garniture pour produit d'emballage en plusieurs pieces
WO2000043272A1 (fr) * 1999-01-21 2000-07-27 Alusuisse Technology & Management Ag Emballage constitue d'un materiau composite sous forme de film et procede de production d'un tel emballage
EP2059456B1 (fr) * 2006-09-04 2011-11-09 Cadbury Holdings Limited Emballage amélioré pourvu de lignes d'affaiblissement
WO2016100852A1 (fr) * 2014-12-19 2016-06-23 Printpack Illinois, Inc. Emballage souple à ouverture facile

Also Published As

Publication number Publication date
EP3891080C0 (fr) 2024-09-18
WO2020115062A1 (fr) 2020-06-11
NZ775476A (en) 2024-11-29
US20220097943A1 (en) 2022-03-31
AU2019392638A1 (en) 2021-05-27
DE202018106868U1 (de) 2019-01-07
CN113039133A (zh) 2021-06-25
EP3891080A1 (fr) 2021-10-13
BR112021005618A2 (pt) 2021-06-22
MX2021006394A (es) 2021-10-13
US11787615B2 (en) 2023-10-17
CA3121841A1 (fr) 2020-06-11
AU2019392638B2 (en) 2024-11-14

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