EP1247755A1 - Dispositif pour faciliter l'ouverture des sacs en film de matière plastique - Google Patents
Dispositif pour faciliter l'ouverture des sacs en film de matière plastique Download PDFInfo
- Publication number
- EP1247755A1 EP1247755A1 EP02356060A EP02356060A EP1247755A1 EP 1247755 A1 EP1247755 A1 EP 1247755A1 EP 02356060 A EP02356060 A EP 02356060A EP 02356060 A EP02356060 A EP 02356060A EP 1247755 A1 EP1247755 A1 EP 1247755A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- precut
- ring
- sleeve
- film
- 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.)
- Withdrawn
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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
- B65D75/5838—Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs
Definitions
- the present invention relates to a device for facilitating the opening of plastic bags, with or without bellows, having a pre-cut for the opening.
- the invention also relates to a bag provided with such a device and to a method manufacturing such a bag.
- the device according to the invention overcomes this drawback.
- a first characteristic it includes a modification in the bag design. It consists in incorporating at least one grip ring in the manufacturing from the bag, at a place near or near the precut.
- the proximity of the ring grip and pre-cut is a function of both the fragility of the pre-cut and the weight of the contents of the bag.
- the ring (s) can be formed by one or more sleeves projecting from the bag, these sleeves forming receiving volumes from a user's fingers.
- the ring (s) can also be present in the form of two materialized locations to make two finger holes in the wall of the bag, the periphery of these locations may possibly have been precut.
- the ring (s) offer grips for pulling on the plastic film, tearing the precut and open the bag.
- the grip ring (s) can be an integral part of the wall of the bag or can be attached to this wall.
- the ring has a dimension that allows the minimum to slide a finger when it is on one side of the pre-cut, to slide two fingers when this is on each side of the precut. Then it’s easy to shoot for yield the precut. These processes prevent slipping and increase the tensile force by a lever phenomenon, exerted with the handle. The other hand is free to hold back the bag.
- the gripping means make it possible to take the bag to transport it.
- FIGS 1 to 6 show, in perspective, brick bags according to the invention.
- FIG. 7 represents, in perspective, a bag conforming to the invention with "OPTIMA" handle.
- Figure 8 shows, in front view, a flat bag.
- Figure 9 is a schematic representation of a first step in manufacturing the bag in Figure 1.
- Figure 10 is a view similar to Figure 9 during a second manufacturing step.
- Figure 11 is a view similar to Figure 9, during a third manufacturing step.
- Figure 12 is a view similar to Figure 9, during a fourth manufacturing step.
- Figure 13 is a view similar to Figure 9 amount a first step in another method of manufacturing a bag according to FIG. 1 and
- Figure 14 is a view similar to Figure 13, when a next step in the manufacturing process.
- Figure 1 shows, in perspective, a bag S said brick ”, solid, with a bottom gusset.
- a gripper, to open the precut is in the form of rings in two parts 1A. It is part of the constituent film from the bag. It could also be added in the longitudinal weld 3A, in the middle of the bellows, on the top of the filled bag.
- the gripping organ is on both sides of the precut 2A. It is traced on the main faces of the bag and on top. On the main faces, the precut is vertical.
- the ring 1A is formed in a sleeve M of overall cylindrical shape and has a generally circular section.
- the longitudinal axis of the sleeve M is generally parallel to the face 4A of the bag near which is mounted the sleeve M.
- the sleeve M can be formed by a fold of the constituent plastic film of the bag S, the major part of which corresponds to the parts on the left and on the right of the sleeve M in FIG. 1, has been removed so that the sleeve M can only be replaced on either side of the precut line 2A.
- the sleeve M is thus incorporated into the film constituting the bag S.
- the sleeve M is divided into two unitary rings 11A and 11'A which are separated by an auxiliary cutting line 12A.
- a notch 13A is also provided in the sleeve M and allows the interior volume of each of the unit rings 11A and 11A. It is thus possible for a user introducing two fingers by the two opposite openings of the sleeve M to bring them out through the opening 13A and to exert a tensile force aimed at spreading the unitary rings 11A and 11'A, which has for effect of tearing the precuts 12A then 2A.
- Figure 2 shows, in perspective, a bag S said "Brick", solid, with a bottom gusset.
- a gripper to open the precut, is in the form of a ring in part 1B. It is formed by an incorporated sleeve M or added in the longitudinal weld 3B, in the middle of the bellows, on the upper part of the filled bag.
- the gripping member is located on one side of the pre-cut 2B. She is traced on the main faces of the bag and on the top. On the main faces, the precut is vertical.
- Figure 3 shows in perspective a bag called "brick", full, with a bottom gusset.
- a gripper to open the precut, presents itself in the form of a one-part ring 1C. It is formed by an incorporated sleeve M or added in the side seam 3C which is on one side of the bag.
- the gripping organ is on one side of the 2C precut. It is traced on the main faces of the bag and on the side. On the main faces, the precut is vertical.
- Figure 4 shows in perspective a bag S said "Brick", solid, with a bottom gusset.
- a gripper to open the precut comes in the form of a 1D ring, in two parts 11D and 11'D, formed by a sleeve M which is incorporated or added in the 3D side weld which is on the side of the bag S.
- the gripping member is located on either side of the 2D precut and is provided an auxiliary precut line 12D. On the main faces, the precut is horizontal.
- the sleeve is provided with an opening 13D for exit from the fingers of a user.
- the sleeves M of the second, third and fourth modes of realization have their respective longitudinal axes X-X 'parallel to the faces of the bags S against which they are affixed.
- the axes X-X ' are parallel to the welds 3A, 3B, 3C and 3D at the level of which the sleeves M are connected to the faces considered of the bags S.
- M sleeve sections allow insertion one or two fingers of a user in the rings they constitute.
- Figure 5 shows, in perspective, a bag S said "Brick", solid, with a bottom gusset.
- the gripper to open the precut of the bag is in the form of two rings 1E formed by materialized locations the periphery of which may have been precut, as shown by the precut lines auxiliary 13E.
- the 1E gripping rings are located on either side of the pre-cut 2E.
- the precut is traced on the main faces of the bag and on the top. On the faces main, the precut is vertical.
- Figure 6 shows a front view of a bag S, provided a band B, with or without a hem, in which is provided a carrying handle P.
- a 2F pre-cut line is provided on two opposite walls of the S bag and extends into the strip B.
- These gripping rings can receive a reinforcement.
- Figure 7 shows in perspective a bag S full to bottom gusset, supplemented by a 4H “Optima handle” in transparent film.
- An organ of grip to open the 2H pre-cut of the bag is in the form of a 1H ring. She is incorporated or added in the 3H longitudinal weld in the middle of the bellows on the upper part of the filled bag.
- the pre-cut is traced on one side of the bag and on the bellows of background.
- the ring is formed by a sleeve M as in the first embodiment.
- Figure 8 shows a front view of an empty bag, said "Flat” without bellows with a gripping ring 1J formed in an eyelet O which is part integral of the bag S or is added in one of the 3J welds.
- the 2J pre-cut is horizontal.
- the gripping ring may or may not be provided with a precut enabling it to be separated into two parts, this precut, called the gripping member, interfering with the opening precut.
- the gripping member may be in the form of two locations forming a ring and delimited by precuts and located on either side of the precut, to make two finger holes in the wall of the bag, which constitute the at least the gripping member.
- precut not only a dotted or dashed cut, but also any line of weakening of the resistance of the wall of the bag or the welds, such as for example a reduction in the thickness of the wall, or again gluing with a low resistance glue, or presence of plastic material peelable (peelable PE).
- peelable PE plastic material peelable
- the sleeves M in which the rings of the invention are formed can be cut with a particular shape in agreement with a decorative motif provided on the bag.
- the sleeves M can also be printed to better integrate with the decor provided on the bag.
- the rings of the fifth, sixth and eighth mode of realization can also be changed in their geometry and are not necessarily with strictly circular sections.
- a ring as a gripping member, allows to exercise thanks to it an intense effort to tear the precut, then that such a ring has dimensions adapted to receive one or two fingers of a user and does not protrude too far from the side walls of the bag that it team.
- Such a ring is particularly easy to use since it suffices for the user to insert one or more fingers inside it, unlike less practical materials such as handles.
- the sleeve M of a bag S can be an integral part of the film constituting this bag.
- a sheet of flat film 1 is unwound from a reel not shown and folded along of a fold line 2.
- a weld 3 is formed over the entire length of the strip 1 to a few centimeters from the fold line 2, so that a continuous sleeve 4 is formed which extends over the entire length of the strip 1.
- the strip 1 thus cut is also provided with marks 5 allowing to control its advance thanks to an optical reading system.
- the strip 1 is then routed to a conformator in which is formed a bellows 6, as shown in Figure 11, the different sleeves or rings M then being inside the bellows.
- the strip 1 is then flattened out and precuts 7 are made on the two thicknesses of the strip 1, each sleeve or ring M being crossed by a line 7.
- the strip 1 is sectioned at regular intervals along parallel edges 8 perpendicular to the direction of advance F 1 , so that the bags S are successively formed.
- the cutting is carried out by a heating blade which makes the material flow on the sides and weakens the film. While the plalstic is in fusion, the part intended to constitute a bag S is moved by traction. After cooling, the heated edges 8 become welds.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Abstract
Description
- suffisamment résistante pour ne pas éclater au remplissage du sac et
- pouvant se déchirer facilement.
- le sac a une poignée,
- le sac est fait avec plusieurs matériaux complexés ou
- le film plastique des sacs est plus épais pour des gros conditionnements plus économiques.
- le moyen de préhension sous forme de bague peut avoir une forme banale ou être personnalisée, découpée dans quelques formes que ce soit, un ours par exemple, et soudée au pourtour. L'organe de préhension est suffisamment étendu pour pour pouvoir supporter des informations destinées à son utilisation ou à la publicité,
- la bague ou les bagues peuvent faire partie intégrante de la paroi du sac ou être ajoutée à la paroi, par soudure, par adhésif, par collage hot melt ou tout autre moyen, à un endroit voisin ou proche de la prédécoupe. Elles peuvent être intégrées pendant pendant la fabrication du sac ou posées lorsque les sacs sont remplis.
Claims (13)
- Dispositif pour ouvrir un sac avec une prédécoupe contenant des produits compactés ou non, caractérisé :en ce qu'il comporte, en un endroit voisin de la prédécoupe (2A, 2B, 2C, 2D, 2E, 2F, 2H, 2J) au moins une bague (1A, 1B, 1C, 1D, 1E, 1F, 1H, 1J) de préhension permettant de tirer d'une main sur le film plastique, tandis que sac (S) est tenu de l'autre main de l'autre coté de la prédécoupe, et de déchirer la prédécoupe.
- Dispositif selon la revendication 1 caractérisé :en ce que ladite bague de préhension (1A, 1B, 1C, 1D, 1E, 1F, 1H, 1J) est incorporée à l'une des parois dudit sac (S).
- Dispositif selon la revendication 1 caractérisé :en ce que ladite bague (1A, 1B, 1C, 1D, 1E, 1F, 1H, 1J) de préhension est rapportée sur l'une des parois dudit sac, notamment par collage ou thermocollage.
- Dispositif selon l'une des revendications précédentes caractérisé :en ce que ladite bague de préhension (1A, 1B, 1C, 1D, 1E, 1F, 1H, 1J) est disposée au niveau d'une soudure (3A, 3B, 3C, 3D, 3H, 3J) dudit sac (S).
- Dispositif selon l'une des revendications précédentes, caractériséen ce qu'il comprend deux bagues (11A, 11'A ; 11D, 11'D, lE), réparties de part et d'autre de ladite ligne de découpe (2A, 2D, 2E).
- Dispositif selon l'une des revendications précédentes, caractériséen ce que ladite bague est formée par un manchon (M) dont un axe central (X-X') est globalement parallèle à la paroi dudit sac (S) à proximité de laquelle il est disposé.
- Dispositif selon la revendication 6, caractérisé :en ce que les deux extrémités dudit manchon (M) sont disposées de part et d'autre de ladite ligne de découpe (2A, 2D) qui se prolonge par une découpe auxiliaire (12A, 12D) ménagée sur ledit manchon, de telle sorte que ledit manchon forme deux bagues (11A, 11'A, 11D, 11'D) réparties de part et d'autre de ladite ligne de découpe, lesdites bagues étant séparées par ladite ligne de découpe auxiliaire (12A, 12D).
- Dispositif selon l'une des revendications 1 à 5, caractérisé :en ce que ladite bague est formée par une ouverture (1E, 1F, 1J) globalement circulaire ménagée dans une paroi dudit sac (S) ou un volet (B, O) solidaire dudit sac.
- Sac (S) équipé d'un dispositif d'ouverture (1A, 1B, 1C, 1D, 1E, 1F, 1H, 1J) selon l'une des revendications précédentes.
- Procédé de fabrication d'un sac en film de matière plastique, caractérisé en ce qu'il comprend une étape consistant à :former au moins une bague (M) dans un film (1) destiné à constituer le sac (S) ou sur une partie (24) dsetinée à être rapportée sur ce film (25, 26), à proximité d'uneprédécoupe (7) ménagée dans ledit film (1 ; 25 ; 26).
- Procédé selon la revendciation 10, caractériséen ce que ladite bague (M) est formée par enlèvement de matière dans un manchon (4, 24) s'étendant au voisinage d'un bord (2) dudit film (1 ; 25, 26).
- Procédé selon la revendication 10, caractérisé :en ce que ledit manchon (4) est formé par pliage et soudage (3) dudit film (1).
- Procédé selon la revendication 10, caractériséen ce que ledit manchon (24) est rapporté et soudé (27) sur ledit film (25, 26).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0104486A FR2822805B1 (fr) | 2001-04-03 | 2001-04-03 | Disposition pour faciliter l'ouverture des sacs en film de matiere plastique |
FR0104486 | 2001-04-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1247755A1 true EP1247755A1 (fr) | 2002-10-09 |
Family
ID=8861862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02356060A Withdrawn EP1247755A1 (fr) | 2001-04-03 | 2002-04-02 | Dispositif pour faciliter l'ouverture des sacs en film de matière plastique |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1247755A1 (fr) |
FR (1) | FR2822805B1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5427245A (en) | 1991-04-11 | 1995-06-27 | Peaudouce | Opening device for a bag made from flexible material and packaging compressible products |
US5666445A (en) | 1992-02-27 | 1997-09-09 | Conrad; Daniel J. | Easy opening flexible plastic bag and a method of making same |
EP1110877A1 (fr) * | 1999-12-24 | 2001-06-27 | Etablissements Moreau André & Cie | Sac d'emballage |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664263A (en) * | 1985-06-24 | 1987-05-12 | Minnesota Mining And Manufacturing Company | Divisible tape tab for opening a container |
-
2001
- 2001-04-03 FR FR0104486A patent/FR2822805B1/fr not_active Expired - Lifetime
-
2002
- 2002-04-02 EP EP02356060A patent/EP1247755A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5427245A (en) | 1991-04-11 | 1995-06-27 | Peaudouce | Opening device for a bag made from flexible material and packaging compressible products |
US5666445A (en) | 1992-02-27 | 1997-09-09 | Conrad; Daniel J. | Easy opening flexible plastic bag and a method of making same |
EP1110877A1 (fr) * | 1999-12-24 | 2001-06-27 | Etablissements Moreau André & Cie | Sac d'emballage |
Also Published As
Publication number | Publication date |
---|---|
FR2822805A1 (fr) | 2002-10-04 |
FR2822805B1 (fr) | 2003-08-15 |
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