EP0575536A1 - Wrapping method using folded flexible sheets. - Google Patents

Wrapping method using folded flexible sheets.

Info

Publication number
EP0575536A1
EP0575536A1 EP92909006A EP92909006A EP0575536A1 EP 0575536 A1 EP0575536 A1 EP 0575536A1 EP 92909006 A EP92909006 A EP 92909006A EP 92909006 A EP92909006 A EP 92909006A EP 0575536 A1 EP0575536 A1 EP 0575536A1
Authority
EP
European Patent Office
Prior art keywords
folds
packaging according
folding
fixing
packaging
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.)
Granted
Application number
EP92909006A
Other languages
German (de)
French (fr)
Other versions
EP0575536B1 (en
Inventor
Akiva Buchberg
Gilbert Capy
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.)
Wrapco International NV
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0575536A1 publication Critical patent/EP0575536A1/en
Application granted granted Critical
Publication of EP0575536B1 publication Critical patent/EP0575536B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/02—Wrappers or flexible covers
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/02—Wrappers or flexible covers
    • B65D65/10—Wrappers or flexible covers rectangular
    • B65D65/12—Wrappers or flexible covers rectangular formed with crease lines to facilitate folding

Definitions

  • the invention relates to a method of packaging a convex body, or equivalent convex volume circumscribed to any body, produced from a thin film.
  • the packaging, object of the invention is produced in a preferred version from a sheet of rectangular shape of length L and width K.
  • FIG. 1 shows a fold formed by symmetrical folds.
  • FIG. 2 represents the previous folding, the ends of which have been fixed.
  • FIG. 3 shows a folding-type fig.l effec ⁇ killed on a sheet one side of which has been folded longitudinally LEMENT to form a double film thickness.
  • Figure 4 shows the folding of Fig.3 whose angle is entered in the area where there are two thicknesses of movie.
  • FIG. 5 shows the folding of Fig.3 deployed to obtain a change of direction of the folds according to the invention.
  • FIG. 6 represents a package according to the invention comprising two changes of direction.
  • Figure 7 shows a package according to the invention deployed around an object.
  • the packaging is in the form of a parallelepiped (fig. 2) of length K, width A and thickness 6 corresponding to the number of N folds; the thickness 6, of the plies to be fixed at their ends 7 and 8, is directly proportional to the number N of plies; the fixing techniques must be adapted according to the uses to be made of them and the number N of folds.
  • the folds are attached to the ends in various ways; first there are the methods of fixing sheets to one another, from binding, such as stapling, pinching, sewing, gluing on the edge, using a ring passing through a hole punched out, this list not being exhaustive; then there are the high frequency, ultrasonic, thermal welding methods of films that can be welded or made weldable by depositing a layer of plastic material or single-sided or double-sided heat-activated adhesive, this list not being limiting.
  • the fixing can inté ⁇ tighten the entire width A of the ends 6 and 7 of the folds and the two sides of the film.
  • each fold fixing zone is then separated from the next by a strip of film of width A; it constitutes a border making it possible to improve the aesthetics of the whole; however, it should not be forgotten that the fasteners thus produced work on peeling during deployment of the packaging, that the fixing remains fragile and that the packaging can be prematurely damaged.
  • this packaging by deploying the folds in their central area, we form a cavity in which we can accommodate an object.
  • the object to be wrapped is a cylindrical volume of revolution of diameter D and height H.
  • the maximum number of folds tolerated depends on their method of fixing their ends and it may vary significantly.
  • the deployment of the central part of the packaging, as it is produced, does not allow the ends to systematically fold back towards the center of the upper and lower parts of the object to be packaged; the folds which are generally quite wide have difficulty in deploying to cover the upper and lower surfaces.
  • One way of facilitating this deployment consists, by appropriate folding, in giving the folded packaging a more complex shape (FIG. 6); one way to do this is to try to obtain folds, no longer made up of flat rectangular bands 1 (fig.l) but of rectangular bands 9 (fig.6) folded on themselves so as to give them a direction chosen in advance ; for example, we can give the folded packaging (fig. 6) the shape of a crescent moon by making two changes of direction; to obtain this result, the procedure is as follows: in their central part 25 (fig.
  • the folds are of the same nature as those described previously with an inner edge 10 which will be in contact with the object to be cover and an outer edge 11 which separates two successive inner edges 10; to change the direction of the folds, a rectangular strip 9 is folded over itself along a line 12 welding ⁇ gant obliquely the two sides of length K forming two successive inner 10 and outer 11 edges, and two successive strips 1 being folded symmetrically, one with respect to the other, with respect to their common edge 10 or 11; under these conditions the edges are reversed; the inner edges 10 become outer edges 13 and the outer edges 11 " become inner edges 14; the angle 15 made by the oblique fold line 12 with the inner edges 10 and outer 11 determines the variation of the" direction of the folds , which can vary widely, from the acute angle to the obtuse angle through the right angle.
  • One way of making this kind of folding manually with a change of direction is to first define strips of width A and length K (fig. 3); to fold the end 20 longitudinally whose direction you want to change, and to perform the folding as described above of the rectangles 1 (fig.l) of which one side 20 (fig.3) has two thicknesses of film with a folding edge 23. Then we enter each angle 22 of the folds obtained to mark the oblique line 24 (fig.4) which will allow each strip 1 to fold back on itself; once the edges are well marked, unfold the previous fold (fig.4) and put in place the following folds the creases made (fig. 5); all that remains is to fold the folds over each other and fix the ends as shown (fig. 6).
  • FIG. 8 represents a method of fixing the pleats or of reinforcing their fixing by adding a flexible tape.
  • This flexible tape 26 (fig.8) is fixed by welding or gluing and avoids the work of peeling the fixing of the folds in the vicinity of the edge 13 when it interests only one side of the film; the strip alone can constitute a method of fixing the folds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Packages (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Packaging Of Special Articles (AREA)
  • Basic Packing Technique (AREA)

Abstract

PCT No. PCT/FR92/00228 Sec. 371 Date Sep. 15, 1993 Sec. 102(e) Date Sep. 15, 1993 PCT Filed Mar. 13, 1992 PCT Pub. No. WO92/16429 PCT Pub. Date Oct. 1, 1992.Wrapping for convex or similar bodies, made from a thin sheet, consisting of symmetrical folds, from which there are obtained, by folding, changes in direction making it possible to approximate, as best as possible, the profile to be wrapped and the folds of which are fastened at their ends. In order to change the direction of the folds, each rectangular strip (9 ) is folded on itself along an oblique line (12) enabling the internal (10) and external (11) arrises to be inverted in order to become, respectively, external arrises (13) and (14), the angle (15) formed by the oblique folding line (12) and the internal (10) and external (11) arrises determining the variation in the direction of the folds.

Description

METHODE D'EMBALLAGE A PARTIR DE FEUILLES SOUPLES PLISSES. PACKAGING METHOD FROM FLEXIBLE PLEATED SHEETS.
L'invention concerne un mode d'emballage d'un corps convexe, ou du volume convexe équivalent circonscrit à un corps quelconque, réalisé à partir d'un film mince.The invention relates to a method of packaging a convex body, or equivalent convex volume circumscribed to any body, produced from a thin film.
Depuis la création de la feuille de papier rectangu- laire, simple ou composite, servant à emballer les fromages, les hamburgers et les petits pains, il a été créé un embal¬ lage à base de film plissé, les plis étant de forme dissymé¬ trique, fixés sur les bords, permettant d'envelopper les corps convexes; il s'agit des brevets FR-86 03956, FR- 88 03654 et FR-90 13589, qui décrivent diverses sortes d'emballages utilisant des plis couchés; dans ces brevets les plis sont définis à partir de bandes successives for¬ mant des rectangles, des parallélogrammes ou des trapèzes allongés; de largeur A et B, A différent de B. La présente invention concerne la réalisation d'embal¬ lages plissés réalisés à partir d'une bande de film rectan¬ gulaire dans lequel les plis sont formés d'une succession de bandes rectangulaires égales; ce qui correspond dans les brevets cités au cas A=B et dans lequel le rayon des cercles supérieur et inférieur est nul.Since the creation of the rectangular or simple sheet of paper used to wrap cheeses, hamburgers and rolls, a packaging based on pleated film has been created, the folds being of dissymé¬ stick, fixed on the edges, allowing to wrap the convex bodies; these are patents FR-86 03956, FR-88 03654 and FR-90 13589, which describe various kinds of packaging using coated plies; in these patents the folds are defined from successive bands forming rectangles, parallelograms or elongated trapezoids; of width A and B, A different from B. The present invention relates to the production of pleated packaging made from a strip of rectangular film in which the folds are formed from a succession of equal rectangular strips; which corresponds in the patents cited to the case A = B and in which the radius of the upper and lower circles is zero.
L'emballage, objet de l'invention, est réalisé dans une version préférée à partir d'une feuille de forme rectan¬ gulaire de longueur L et de largeur K.The packaging, object of the invention, is produced in a preferred version from a sheet of rectangular shape of length L and width K.
La figure 1 représente un pliage formé de plis symé- triques.FIG. 1 shows a fold formed by symmetrical folds.
La figure 2 représente le pliage précédent dont on a fixé les extrémités.FIG. 2 represents the previous folding, the ends of which have been fixed.
La figure 3 représente un pliage du type Fig.l effec¬ tué sur une feuille dont un côté a été replié longitudina- lement pour former une, double épaisseur de film.3 shows a folding-type fig.l effec¬ killed on a sheet one side of which has been folded longitudinally LEMENT to form a double film thickness.
La figure 4 représente le pliage de la Fig.3 dont on a rentré un angle dans la zone où il y a deux épaisseurs de film.Figure 4 shows the folding of Fig.3 whose angle is entered in the area where there are two thicknesses of movie.
La figure 5 représente le pliage de la Fig.3 déployé pour obtenir un changement de direction des plis suivant l'invention. La figure 6 représente un emballage suivant l'inven¬ tion comportant deux changements de direction.Figure 5 shows the folding of Fig.3 deployed to obtain a change of direction of the folds according to the invention. FIG. 6 represents a package according to the invention comprising two changes of direction.
La figure 7 montre un emballage suivant l'invention déployé autour d'un objet.Figure 7 shows a package according to the invention deployed around an object.
Lorsqu'on réalise le pliage des plis symétriques formés de bandes rectangulaires 1 (fig.l) identiques, de largeur A 2 et de longueur K 3, les N plis se superposent exactement (N étant le nombre de plis), chaque pli étant formé de deux bandes rectangulaires 1 successives reliées par une arête 4 de pliage, deux plis successifs étant aussi reliés entre eux par une arête de pliage 5; une fois plissé, l'emballage se présente sous la forme d'un parallélépipède (fig.2) de longueur K, de largeur A et d'épaisseur 6 correspondant au nombre de N plis; l'épaisseur 6, des plis à fixer à leurs extrémités 7 et 8, est directe- ment proportionnelle au nombre N de plis; les techniques de fixation doivent être adaptées en fonction des usages qu'on veut en faire et du nombre N de plis.When the symmetrical folds formed of identical rectangular strips 1 (fig. 1), of width A 2 and length K 3 are folded, the N folds are exactly superposed (N being the number of folds), each fold being formed of two successive rectangular bands 1 connected by a folding edge 4, two successive folds also being interconnected by a folding edge 5; once folded, the packaging is in the form of a parallelepiped (fig. 2) of length K, width A and thickness 6 corresponding to the number of N folds; the thickness 6, of the plies to be fixed at their ends 7 and 8, is directly proportional to the number N of plies; the fixing techniques must be adapted according to the uses to be made of them and the number N of folds.
Les plis sont fixés aux extrémités de diverses maniè¬ res; il y a d'abord les méthodes de fixation de feuilles entre elles, issues de la reliure, telles que l'agrafage, le pincement, la couture, le collage sur la tranche, l'uti¬ lisation d'un anneau passant à travers un trou effectué à l'emporte pièce, cette liste n'étant pas limitative; il y a ensuite les méthodes de soudure thermique, à ulta- sons, à haute fréquence, de films soudables ou rendus soudables par dépose d'une couche de matériau plastique ou de colle thermoactivable simple face ou double face, cette liste n'étant pas limitative. La fixation peut inté¬ resser toute la largeur A des extrémités 6 et 7 des plis et les deux côtés du film. Mais elle peut aussi intéresser toute la largeur A des extrémités 6 et 7 des plis, mais d'un seul côté du film; dans ces conditions les faces de chaque pli sont fixées deux par deux et chaque pli relié à l'autre par une arête 5; les arêtes 4 peuvent s'écarter les unes des autres. Il peut être intéressant de faire en sorte que la fixation n'intéresse qu'une face du film et sur seulement une partie de la largeur A, de l'extrémité des plis, en partant de l'arête 4 (fig.l) joignant les deux bandes rectangulaires 1 qui le constitu¬ ent; par exemple on peut fixer chaque pli à son extrémité sur une longueur A/2 en partant de l'arête 4 en laissant libre la zone située du côté de l'arête 5; la zone de fixation des plis peut alors se déployer partiellement permettant d'éviter que l'extrémité des plis reste en paquet. Lorsque l'extrémité est déployée chaque zone de fixation de pli est alors séparée de la suivante par une bande de film de largeur A; elle constitue une bordure permettant d'améliorer l'esthétique de l'ensemble; il ne faut cependant pas oublier que les fixations ainsi réalisées travaillent au pelage lors du déploiement de l'emballage, que la fixation demeure fragile et qu'on peut provoquer une dégradation prématurée de l'emballage. Lorsqu'on développe cet emballage, en déployant les plis dans leur zone centrale, on forme une cavité dans laquelle on peut loger un objet. Supposons, pour faciliter les explications, que l'objet à emballer soit un volume cylindrique de révolution de diamètre D et de hauteur H. Dans la version décrite l'emballage forme, avant dépliage, un parallélépipède rectangle (fig.2); pour éviter d'avoir un trop grand nombre de plis, ce qui crée des problèmes de fixation aux extrémités, on a intérêt à le limiter; dans le cas de l'emballage d'un cylindre on a K sensiblement égal à H+D et L=K*P1 avec Pl=3,14*D qui correspond au périmètre de la surface cylindrique, K le coefficient de recouvrement de l'emballage et A=L/N; K est inférieur à 1 dans le cas d'un recouvrement partiel de l'objet à emballer; si K est égal ou supérieur à 1, il peut y avoir recouvrement total de l'objet et même l'emballage peut se superposer à lui-même pour réaliser la fermeture. Le nombre de plis maximum toléré est fonction de leur mode de fixation de leurs extrémités et il peut varier de manière importante. Le déploiement de la partie centrale de l'emballage, tel qu'il est réalisé, ne permet pas que les extrémités se rabattent systématiquement vers le centre des parties supérieures et inférieures de l'objet à emballer; les plis qui sont généralement assez larges ont du mal à se déployer pour recouvrir les surfaces supé¬ rieures et inférieures. Une manière de faciliter ce déploie¬ ment consiste, par un pliage approprié, à donner à l'embal¬ lage plié une forme plus complexe (fig.6); une façon de procéder est de chercher à obtenir des plis, non plus constitués de bandes rectangulaires planes 1 (fig.l) mais de bandes rectangulaires 9 (fig.6) pliées sur elles-mêmes de manière à leur donner une direction choisie par avance; par exemple on peut donner à l'emballage plié (fig.6) la forme d'un croissant de lune en faisant deux changements de direction; pour obtenir ce résultat, on opère de la façon suivante: dans leur partie centrale 25 (fig.6 et 7) les plis sont de même nature que ceux décrits précédem¬ ment avec une arête intérieure 10 qui sera en contact avec l'objet à recouvrir et une arête extérieure 11 qui sépare deux arêtes intérieures 10 successives; pour changer la direction des plis, on opère un pliage sur elle-même de chaque bande rectangulaire 9 suivant une ligne 12 joi¬ gnant en oblique les deux côtés de longueur K formant deux arêtes intérieure 10 et extérieure 11 successives, et deux bandes 1 successives étant pliées symétriquement, l'une par rapport à l'autre, par rapport à leur arête commune 10 ou 11; dans ces conditions les arêtes sont inversées; les arêtes intérieures 10 deviennent des arêtes extérieures 13 et les arêtes extérieures 11 "deviennent des arêtes intérieures 14; l'angle 15 que fait la ligne oblique 12 de pliage avec les arêtes intérieures 10 et extérieures 11 détermine la variation de la «direction des plis, qui peut varier dans une large place, allant de l'angle aigu à l'angle obtus en passant par l'angle droit. Si on fait le même changement de direction aux deux extrémités 16 et 17 afin d'obtenir un profil plié en forme de U ou de croissant de lune, afin-de s'approcher au mieux du demi-profil du produit à emballer; on peut obtenir ainsi, par dépliage de l'emballage correctement dimensionné, par exemple, autour d'une surface cylindrique (fig.7), des plis ouverts 18 sensiblement parallèles qui restent bien formés le long de la surface cylindrique et des plis sensiblement rayonnants 19 mais bien formés sur les parties supérieures et inférieures. Pour réaliser ce type d'emballage et pour lui garder son aspect esthéti¬ que, il faut qu'il soit suffisamment dimensionné; en effet, sa conception en fait un emballage permettant de réaliser une cavité ayant une forme relativement bien définie; et si on veut l'utiliser pour emballer une forme trop différente, de celle pour laquelle il a été dimensionné, on risque de perdre la qualité esthétique des plis. Contrai- rement aux emballages décrits dans les brevets cités, les plis s'ouvrent en accordéon sans qu'il y ait glissement du film sur lui-même; en conséquence on peut utiliser des films relativement plus rigides.The folds are attached to the ends in various ways; first there are the methods of fixing sheets to one another, from binding, such as stapling, pinching, sewing, gluing on the edge, using a ring passing through a hole punched out, this list not being exhaustive; then there are the high frequency, ultrasonic, thermal welding methods of films that can be welded or made weldable by depositing a layer of plastic material or single-sided or double-sided heat-activated adhesive, this list not being limiting. The fixing can inté¬ tighten the entire width A of the ends 6 and 7 of the folds and the two sides of the film. But it can also interest the entire width A of the ends 6 and 7 of the folds, but only on one side of the film; under these conditions the faces of each fold are fixed two by two and each fold connected to the other by an edge 5; the edges 4 can deviate from each other. It may be advantageous to ensure that the binding only affects one side of the film and over only part of the width A, from the end of the folds, starting from the edge 4 (fig.l) joining the two rectangular strips 1 which constitute it; for example, it is possible to fix each fold at its end over a length A / 2 starting from the edge 4, leaving free the zone situated on the side of the edge 5; the pleat fixing zone can then be partially deployed, making it possible to prevent the ends of the plies from remaining in a bundle. When the end is deployed, each fold fixing zone is then separated from the next by a strip of film of width A; it constitutes a border making it possible to improve the aesthetics of the whole; however, it should not be forgotten that the fasteners thus produced work on peeling during deployment of the packaging, that the fixing remains fragile and that the packaging can be prematurely damaged. When we develop this packaging, by deploying the folds in their central area, we form a cavity in which we can accommodate an object. Suppose, to facilitate the explanations, that the object to be wrapped is a cylindrical volume of revolution of diameter D and height H. In the version described, the packaging forms, before unfolding, a rectangular parallelepiped (fig.2); to avoid having too many folds, which creates problems of fixing at the ends, it is advantageous to limit it; in the case of the packaging of a cylinder we have K substantially equal to H + D and L = K * P1 with Pl = 3.14 * D which corresponds to the perimeter of the cylindrical surface, K the covering coefficient of l 'packaging and A = L / N; K is less than 1 in the case of partial recovery of the object to be packaged; if K is equal to or greater than 1, there can be total covering of the object and even the packaging can be superimposed on itself to achieve closure. The maximum number of folds tolerated depends on their method of fixing their ends and it may vary significantly. The deployment of the central part of the packaging, as it is produced, does not allow the ends to systematically fold back towards the center of the upper and lower parts of the object to be packaged; the folds which are generally quite wide have difficulty in deploying to cover the upper and lower surfaces. One way of facilitating this deployment consists, by appropriate folding, in giving the folded packaging a more complex shape (FIG. 6); one way to do this is to try to obtain folds, no longer made up of flat rectangular bands 1 (fig.l) but of rectangular bands 9 (fig.6) folded on themselves so as to give them a direction chosen in advance ; for example, we can give the folded packaging (fig. 6) the shape of a crescent moon by making two changes of direction; to obtain this result, the procedure is as follows: in their central part 25 (fig. 6 and 7) the folds are of the same nature as those described previously with an inner edge 10 which will be in contact with the object to be cover and an outer edge 11 which separates two successive inner edges 10; to change the direction of the folds, a rectangular strip 9 is folded over itself along a line 12 joi¬ gant obliquely the two sides of length K forming two successive inner 10 and outer 11 edges, and two successive strips 1 being folded symmetrically, one with respect to the other, with respect to their common edge 10 or 11; under these conditions the edges are reversed; the inner edges 10 become outer edges 13 and the outer edges 11 " become inner edges 14; the angle 15 made by the oblique fold line 12 with the inner edges 10 and outer 11 determines the variation of the" direction of the folds , which can vary widely, from the acute angle to the obtuse angle through the right angle. If we make the same change of direction at both ends 16 and 17 in order to obtain a profile folded in U-shaped or crescent-shaped, so as to approach at best of the half profile of the product to be packaged; one can thus obtain, by unfolding the correctly dimensioned packaging, for example, around a cylindrical surface (fig. 7), substantially parallel open pleats 18 which remain well formed along the cylindrical surface and substantially radiating pleats 19 but well formed on the upper and lower parts. To make this type of packaging and to keep it aesthetic, it must be sufficiently sized; indeed, its design makes it a packaging making it possible to produce a cavity having a relatively well defined shape; and if we want to use it to package a shape that is too different from the one for which it was designed, we risk losing the aesthetic quality of the folds. Unlike the packaging described in the cited patents, the folds open in accordion without the film sliding on itself; therefore relatively stiffer films can be used.
Il est évident qu'on peut appliquer cette technique sur des plis formés initialement, par exemple, de bandes en forme de parallélogrammes symétriques deux à deux ou de trapèzes isocèles égaux et symétriques deux à deux, suivant le côté oblique joignant les deux bases parallèles, pouvant se superposer par pliage, faire plusieurs change- ments de direction successifs, cette liste de possibilités n'étant pas limitative.It is obvious that this technique can be applied to folds initially formed, for example, of bands in the form of symmetrical parallelograms two by two or equal isosceles trapezoids and symmetrical two by two, along the oblique side joining the two parallel bases, can overlap by folding, make several successive changes of direction, this list of possibilities is not exhaustive.
Une manière de réaliser manuellement ce genre de pliage avec changement de direction est de délimiter dans un premier temps des bandes de largeur A et de longueur K (fig.3); de replier longitudinalement l'extrémité 20 dont on veut changer la direction, et d'effectuer le pliage comme décrit précédemment des rectangles 1 (fig.l) dont un côté 20 (fig.3) comporte deux épaisseurs de film avec une arête de pliage 23. Ensuite on rentre chaque angle 22 des plis obtenus pour marquer la ligne oblique 24 (fig.4) qui permettra à chaque bande 1 de se replier sur elle- même; une fois les arêtes bien marquées, on déplie le pliage précédent (fig.4) et on met en place les plis suivant les rainages effectués (fig.5); il reste alors à replier les plis les uns sur les autres et à fixer les extrémités comme indiqué (fig.6). On constate que dans la zone de changement de direction, il y a doublement du nombre de couches de films superposées, ce qui est un facteur limitant du nombre de plis. Dans une variante de l'invention, il peut être intéressant, pour certaines applications, de ne fixer qu'une seule des extrémités pour faire des produits, ayant la forme d'une cloche ou d'un cornet, lorsqu'ils sont déployés, pour protéger par exemple un objet, posé sur une table, de la poussière ou tout simplement un cornet de frites. La figure 8 représente un mode de fixation des plis ou de renforcement de leur fixation par adjonction d'un ruban souple. Ce ruban souple 26 (fig.8) est fixé par soudure ou collage et évite le travail au pelage de la fixation des plis dans le voisinage de l'arête 13 lorsqu'¬ il n'intéresse qu'une face du film; la bande peut constituer à elle seule un mode de fixation des plis. One way of making this kind of folding manually with a change of direction is to first define strips of width A and length K (fig. 3); to fold the end 20 longitudinally whose direction you want to change, and to perform the folding as described above of the rectangles 1 (fig.l) of which one side 20 (fig.3) has two thicknesses of film with a folding edge 23. Then we enter each angle 22 of the folds obtained to mark the oblique line 24 (fig.4) which will allow each strip 1 to fold back on itself; once the edges are well marked, unfold the previous fold (fig.4) and put in place the following folds the creases made (fig. 5); all that remains is to fold the folds over each other and fix the ends as shown (fig. 6). It can be seen that in the direction change zone, there is a doubling of the number of layers of superimposed films, which is a limiting factor in the number of plies. In a variant of the invention, it may be advantageous, for certain applications, to fix only one of the ends to make products, having the shape of a bell or a horn, when they are deployed, to protect for example an object, placed on a table, from dust or simply a cone of fries. FIG. 8 represents a method of fixing the pleats or of reinforcing their fixing by adding a flexible tape. This flexible tape 26 (fig.8) is fixed by welding or gluing and avoids the work of peeling the fixing of the folds in the vicinity of the edge 13 when it interests only one side of the film; the strip alone can constitute a method of fixing the folds.

Claims

RevendicationsClaims
1 - Emballage plissé à base de film mince pour objets convexes ou équivalents, caractérisé en ce qu'il est formé à partir d'un pliage suivant des bandes rectangulaires1 - Pleated packaging based on thin film for convex or equivalent objects, characterized in that it is formed from a folding along rectangular bands
(I) identiques, ou des bandes en forme de parallélogrammes ou en forme de trapèzes isocèles, symétriques deux à deux par rapport à l'arête (4) de pliage commune et fixés à leurs extrémités.(I) identical, or bands in the form of parallelograms or in the form of isosceles trapezoids, symmetrical two by two with respect to the joint folding edge (4) and fixed at their ends.
2 - Emballage suivant la revendication 1, caractérisé en ce que les plis changent de direction par repliage des bandes sur elles-mêmes suivant une ligne oblique (12) permettant aux arêtes intérieures (10) et extérieures2 - Packaging according to claim 1, characterized in that the folds change direction by folding the strips on themselves along an oblique line (12) allowing the inner edges (10) and exterior
(II) de s'inverser pour devenir respectivement des arêtes extérieures (13) et (14).(II) to reverse to become respectively external edges (13) and (14).
3 - Emballage suivant la revendication 2 , caractérisé en ce que les deux extrémités (16) et (17) des bandes, constituant les plis, changent de direction pour former un U, lorsqu'il est plié, pour s'approcher au mieux du demi profil de l'objet à envelopper, afin de garder aux plis une forme esthétique, lorsque l'emballage est déployé autour de l'objet à recouvrir.3 - Packaging according to claim 2, characterized in that the two ends (16) and (17) of the bands, constituting the folds, change direction to form a U, when folded, to get as close as possible to the half profile of the object to be wrapped, in order to keep the folds an aesthetic shape, when the packaging is deployed around the object to be covered.
4 - Emballage suivant l'une quelconque des revendica¬ tions 2 et 3, caractérisé en ce que le changement de direc¬ tion des plis peut être réalisé manuellement par pliage longitudinal préalable d'une bande (20), suivant une arête (23) de la feuille de départ, avant le pliage en plis symétriques, puis en rentrant les coins (22), -pour marquer les lignes obliques (24), avant déploiement, «permettant d'inverser les arêtes intérieure (10) et extérieure (11), respectivement, en arêtes extérieure (13) et intérieure (14).4 - Packaging according to any one of claims 2 and 3, characterized in that the change in direction of the plies can be carried out manually by prior longitudinal folding of a strip (20), along an edge (23) of the starting sheet, before folding into symmetrical folds, then entering the corners (22), -to mark the oblique lines (24), before deployment, "allowing to invert the inner (10) and outer (11) edges ), respectively, in outer (13) and inner (14) edges.
5 - Emballage suivant l'une queconque «des revendica¬ tions précédentes, caractérisé en ce que les plis comportent un changement de direction ou plusieurs changements de direction semblables ou différents. 6 - Emballage suivant l'une quelconque des revendica¬ tions précédentes, caractérisé en ce que l'emballage n'est fixé que d'un seul côté.5 - Packaging according to any one of the preceding claims, characterized in that the folds include a change of direction or several similar or different changes of direction. 6 - Packaging according to any one of the preceding claims, characterized in that the packaging is not fixed only on one side.
7 - Emballage suivant l'une quelconque des revendica¬ tions précédentes, caractérisé en ce que les fixation des extrémités sont réalisées en employant les techniques de reliure ou de brochure, ou des techniques de soudure à chaud de matières plastiques ou de colles thermoactivables.7 - Packaging according to any one of the preceding revendica¬ tions, characterized in that the fixing of the ends are carried out using the techniques of binding or brochure, or techniques of hot welding of plastics or thermoactivable glues.
8 - Emballage suivant l'une quelconque des revendica¬ tions précédentes, caractérisé en ce que la fixation des extrémités est réalisée par fixation des extrémités des bandes formant les plis sur leurs deux faces.8 - Packaging according to any one of the preceding claims, characterized in that the fixing of the ends is carried out by fixing the ends of the bands forming the folds on their two faces.
9 - Emballage suivant l'une quelconque des revendica¬ tions 1 à 7, caractérisé en ce que la fixation des extrémi¬ tés n'est faite que suivant une face de la feuille de manière que les deux bandes successives reliées par une arête (4) de pliage, constituant un pli, soient fixées entre elles à leurs extrémités, mais que deux plis succes¬ sifs soient seulement reliés entre eux par une arête de pliage (5) .9 - Packaging according to any one of claims 1 to 7, characterized in that the fixing of the extremi¬ ties is made only along one face of the sheet so that the two successive strips connected by an edge (4 ) folding, constituting a fold, are fixed together at their ends, but that two successive folds are only connected together by a folding edge (5).
10 - Emballage suivant la revendication 9, caractérisé en ce que la fixation de l'extrémité faite à partir de l'arête (4) ne concerne qu'une partie de la largeur des bandes du pli concerné et laisse la partie de la bande, située du côté de 1'arête (5) , libre de tout collage pour permettre un dégroupage partiel des plis. 11 - Emballage suivant la revendication 10, caracté¬ risé en ce que la fixation de l'extrémité est renforcée par un ruban souple (26) pouvant éventuellement être uti¬ lisé seul pour la fixation de l'extrémité des plis. 10 - Packaging according to claim 9, characterized in that the fixing of the end made from the edge (4) only concerns part of the width of the strips of the fold concerned and leaves the part of the strip, located on the side of the edge (5), free of any bonding to allow partial unbundling of the folds. 11 - Packaging according to claim 10, caracté¬ ized in that the fixing of the end is reinforced by a flexible tape (26) which can optionally be used alone for fixing the end of the folds.
EP92909006A 1991-03-15 1992-03-13 Wrapping method using folded flexible sheets Expired - Lifetime EP0575536B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9103415 1991-03-15
FR9103415A FR2673909B1 (en) 1991-03-15 1991-03-15 PACKAGING METHOD FROM STRIPS FORMED FROM FLEXIBLE SHEETS PLEATED IN EQUAL FOLD FIXED BETWEEN THEM AT THEIR ENDS.
PCT/FR1992/000228 WO1992016429A1 (en) 1991-03-15 1992-03-13 Wrapping method using folded flexible sheets

Publications (2)

Publication Number Publication Date
EP0575536A1 true EP0575536A1 (en) 1993-12-29
EP0575536B1 EP0575536B1 (en) 1995-07-19

Family

ID=9410961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92909006A Expired - Lifetime EP0575536B1 (en) 1991-03-15 1992-03-13 Wrapping method using folded flexible sheets

Country Status (14)

Country Link
US (1) US5518167A (en)
EP (1) EP0575536B1 (en)
JP (1) JP2592388B2 (en)
KR (1) KR100227011B1 (en)
AT (1) ATE125227T1 (en)
AU (1) AU647271B2 (en)
CA (1) CA2106208C (en)
DE (1) DE69203598T2 (en)
DK (1) DK0575536T3 (en)
ES (1) ES2076760T3 (en)
FR (1) FR2673909B1 (en)
GR (1) GR3017707T3 (en)
RU (1) RU2096292C1 (en)
WO (1) WO1992016429A1 (en)

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IT1290756B1 (en) * 1996-11-22 1998-12-10 Team Mare Snc Di Tedeschi Marc PACKAGING FOR BENCH ITEMS, IN PARTICULAR FOOD PRODUCTS
US20080271371A1 (en) * 2000-06-20 2008-11-06 Weder Donald E Collapsible and/or erectable floral containers
US20050178060A1 (en) * 2003-05-08 2005-08-18 Weder Donald E. Collapsible and/or erectable floral containers
US20070007165A1 (en) 2005-07-07 2007-01-11 Weder Donald E Container assemblies having collapsible and erectable containers containing a packaging material
US20110204049A1 (en) * 2005-07-22 2011-08-25 Weder Donald E Collapsible and/or erectable substantially egg-shaped container
US20070017915A1 (en) * 2005-07-22 2007-01-25 Weder Donald E Collapsible and/or erectable substantially egg-shaped container
US20150030263A1 (en) * 2013-07-26 2015-01-29 James R. Kemp Bag with reinforced walls
EP3015297B2 (en) * 2014-10-29 2022-09-14 Carl Freudenberg KG Assembly with a filter element
KR101995468B1 (en) * 2018-08-14 2019-07-02 주식회사 송강인터내셔날 Textile bag and manufacturing method Thereof

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Also Published As

Publication number Publication date
FR2673909B1 (en) 1993-12-24
EP0575536B1 (en) 1995-07-19
DE69203598D1 (en) 1995-08-24
RU2096292C1 (en) 1997-11-20
FR2673909A1 (en) 1992-09-18
JPH06506175A (en) 1994-07-14
DK0575536T3 (en) 1995-12-04
GR3017707T3 (en) 1996-01-31
DE69203598T2 (en) 1996-03-28
JP2592388B2 (en) 1997-03-19
KR100227011B1 (en) 1999-10-15
CA2106208C (en) 1998-08-04
AU647271B2 (en) 1994-03-17
AU1659592A (en) 1992-10-21
ATE125227T1 (en) 1995-08-15
WO1992016429A1 (en) 1992-10-01
US5518167A (en) 1996-05-21
ES2076760T3 (en) 1995-11-01
CA2106208A1 (en) 1992-09-16

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