EP0401546B1 - Emballage pour produits fluides et son procédé de fabrication - Google Patents

Emballage pour produits fluides et son procédé de fabrication Download PDF

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Publication number
EP0401546B1
EP0401546B1 EP90108977A EP90108977A EP0401546B1 EP 0401546 B1 EP0401546 B1 EP 0401546B1 EP 90108977 A EP90108977 A EP 90108977A EP 90108977 A EP90108977 A EP 90108977A EP 0401546 B1 EP0401546 B1 EP 0401546B1
Authority
EP
European Patent Office
Prior art keywords
tube
web
package
side walls
edge
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.)
Expired - Lifetime
Application number
EP90108977A
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German (de)
English (en)
Other versions
EP0401546A1 (fr
Inventor
Per Andersson
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
Tetra Alfa Holdings SA
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 Tetra Laval Holdings and Finance SA, Tetra Alfa Holdings SA filed Critical Tetra Laval Holdings and Finance SA
Publication of EP0401546A1 publication Critical patent/EP0401546A1/fr
Application granted granted Critical
Publication of EP0401546B1 publication Critical patent/EP0401546B1/fr
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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/727—Dispensing openings provided in the upper end-walls of tubular containers, the openings being closed by means of separate stopper or other closure elements
    • 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
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/22—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of polygonal cross-section
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab
    • B65D17/4014—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab and provided with attached means for reclosing or resealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting webs

Definitions

  • the invention relates to a package for flowable substances, in particular milk and juices, with a square tube in cross section, which has four flat side walls connected to one another by a longitudinal sealing seam and consists of a plastic-coated carrier material, such as paper or cardboard, and with one at the end the plastic molded cover of the tube, the tube being extended at its cover-side end on at least two edges which are at least partially opposite each other, each with a wall field which protrudes at an angle to the side wall and on the edge of which the cover facing the center is molded, which is also molded onto the unextended edge of the tube.
  • a plastic-coated carrier material such as paper or cardboard
  • the invention further relates to a method for producing such a pack.
  • Tubes are used to produce tubes from packaging material, the bottom of which is formed by folding from the end material of the tube and the cover of which is molded onto the opposite end of the tube.
  • the tube is drawn onto a mandrel, which forms the inner shape, so to speak, while from the outside preferably two outer mold jaws are arranged at a distance above the end face of the dome and under an injection unit in such a way that an injection cavity is formed between the outer and inner shapes.
  • Melted plastic preferably a thermoplastic, is injected into this from the injection unit, which connects to the plastic on the carrier material at the end of the tube and results in a liquid-tight edge between the tube and the cover.
  • Opening devices are usually provided with lines of weakness that surround tear-open tabs and provide predetermined breaking lines for the end user to open the pack.
  • EP-A-0.236.556 Another package is known from EP-A-0.236.556, in which, however, only one opening device is injected into the hole in the top of paper.
  • the manufacturer of packs of the type mentioned initially not only wishes to maintain exact dimensions of the lid wall and also the arrangement of the opening device in the lid, but in particular an exact configuration of the predetermined breaking or weakening lines, the thickness of which should be as accurate as possible in relation to the lid wall thickness without the tools become too elaborate and complicated.
  • the lid was welded to surfaces whose straight extension is transverse to the lid plane.
  • This structure and the corresponding manufacture mean that the inner shape, namely the mandrel, and the outer shape, e.g. two outer mold halves, free-floating in the end area, where they face each other and form the spray cavity.
  • the inside and outside shapes of the tool are therefore only exactly positioned and held on the outside next to the subsequent product of machine parts.
  • Machine parts always have tolerances, and since carrier materials such as paper or cardboard are never exactly stiff and of the same thickness but also have tolerances, it is clear to the person skilled in the art that in the operation of spraying, i.e. when pressing in molten plastic, the spray cavity is variable within small tolerances. As a result, product batches of different thicknesses and thus also different weakening grooves or predetermined breaking lines result.
  • the invention has for its object to avoid the aforementioned disadvantages to create a pack of the type mentioned, which retains the favorable properties of tightness, easy opening, possibly reclosable, and yet has better dimensional accuracy in the lid area, especially on the lines of weakness; whereby a manufacturing method of a known type is to be improved so that a more precise pressure setting of the plastic in the injection cavity between the inner and outer molded parts and nevertheless a better dimensional accuracy of the molded part are possible.
  • the object is achieved according to the invention in that a wall panel in the form of a narrow flap is connected to the respective side wall at the respective end edge of the cover of two opposite side walls.
  • These wall panels according to the invention allow the inner shape to be supported against the outer shape or vice versa.
  • the inner and outer molded parts of the injection mold no longer have to be supported by machine parts on a path outside the product alone during the production of the new package according to the invention, but can be mutually supported via the wall fields arranged in between.
  • the inner and outer shape are no longer floating against each other arranged, since the carrier material, in particular paper, is hardly compressible or, at least when pressed together, requires significantly smaller spacing tolerances than was previously possible with known tools by means of shoulders, bolts, etc. As a result, packs with lids of tighter tolerances can also be produced over longer operating times of the production machine.
  • the entire injection molding process is carried out with greater accuracy in the manufacture of the product described according to the invention, because even the pressure adjustment of one molded part and the counterpressure by the other molded part with the intermediate carrier material result in contact of the molded parts with one another, and thus exact thickness settings of walls and weakening lines.
  • a narrow flap made of paper is sufficient as the connecting material between the outer shape and the inner shape, so that nothing needs to be changed in the basic design of the pack, the tube of which is made on the cover side with a cover without a carrier material, which is why the advantages of the previous types of pack are retained.
  • the pack can also be given a round cross-sectional shape, so that the essentially flat lid is round and has a disk shape, the wall panels in question being formed as trapezoidal, triangular, rectangular, oval, round or in another configuration on the tube edge can and bring the desired molded parts, but a tube with a square cross-section has proven to be extremely inexpensive for this configuration and for particularly simple tools.
  • a wall panel in the form of a narrow tab on each end edge of the four flat side walls on the cover side connected to the respective side wall via a fold line. Then the inner molded part is supported against the outer molded part along the entire circumference of the tube end.
  • the diagonal gap between adjacent wall fields in the plane of the cover is also filled with plastic, which surrounds the adjacent paper edges and extends at least partially in all three spatial directions beyond the boundaries of the diagonal gap.
  • plastic which surrounds the adjacent paper edges and extends at least partially in all three spatial directions beyond the boundaries of the diagonal gap.
  • a short diagonal gap is formed between adjacent wall panels, the length of which corresponds approximately to the height of the respective wall panel. The height is seen in the direction perpendicular to the tube edge. This diagonal gap extends into the corner at the end of the tube and should be completely filled with plastic according to the teaching of the invention.
  • the tool is designed so that this elongated plastic bead not only fills the diagonal gap but also encompasses the adjacent paper edges. This results in a firm connection between adjacent wall panels and the cover, and at the same time the sealing properties are improved, particularly in the critical corner points of a package that is quadrangular in cross section. A further solidification in the corner points then results from the extension of this elongated plastic bead in all three spatial directions beyond the boundaries of the diagonal gap.
  • Those skilled in the art know that leaks of liquid plastic occurring at the paper edges are difficult to control during injection molding. The dimensions in the corners are so small that tolerances for controlling these leaks can hardly be set up small enough without excessive machine expenditure.
  • the object is achieved according to the invention in that a carrier material web coated with plastic is cut lengthwise approximately in the middle and shaped to form two webs forming the respective tube of the pack, which is thereby formed
  • the resulting stepped edge of each web is provided as the lid-side edge of the tube, the cut of which is separated from the web by separating the web transversely to its running direction and provided with a longitudinal sealing seam to form the tube, that two wall fields protruding from the lid-side end of the tube in an extension of opposite side walls in the surface of the lid is folded over and the lid is molded onto the free edge of the wall panel and the adjacent step end edge and onto the edges of the non-extended side walls.
  • tube blanks can be produced which are provided on the desired, at least partially opposite sides with the wall panels, by means of which the inner and outer molds are to be supported during injection molding.
  • These wall panels are initially still in the plane of the blank and are then folded out or folded over from the planes of the side walls before, during or after the folding over of the individual side walls of the tube.
  • the tube thus produced for injection molding can be drawn onto the mandrel before, during or after the folding over of the wall panels with respect to the tube side walls and can be conveyed under the injection unit.
  • the plastic cover is then molded on without a carrier material. If one considers a tube with a square cross section of the above-mentioned features, then the cover is molded on, on the one hand, onto two wall fields which are essentially opposite one another, and, on the other hand, onto the intermediate ones Tube end edges.
  • a plastic-coated carrier material web is cut lengthwise approximately in the middle and shaped to form two webs forming the respective tube of the pack, the cut the bottom edge of one tube or its bottom folding parts and the lid-side edge of the adjacent tube forms, the blanks of the respective tube are separated by separating the web transversely to their running direction, the respective blank for tube formation is provided with a longitudinal sealing seam that four, at The end of the tube on the cover end is folded over into the surface of the cover as an extension of the wall sections projecting from the side walls, and the cover is molded onto the free edge of the wall sections and their adjacent step end edges until they come into contact with the folded edges.
  • the injection takes place point by point on the end edge of the tube.
  • the plastic is injected to form the lid of the package along the free, essentially inwardly projecting edges of the wall panels.
  • the respective tube can be produced from a web of a double row of blanks without having to accept excessive waste.
  • parallelogram-like waste pieces of alternating inclination are formed by the stepwise longitudinal section through the web.
  • the two rows of blanks arranged one behind the other can be arranged side by side in such a way that the respective cover side of one row of blanks is arranged directly opposite the end edge of the other row of blanks on the cover side.
  • the tube parts forming the base by folding are then each arranged facing away from the common center line of the cutting path, and the parallelogram-like waste pieces mentioned arise in the area of the common cutting edge.
  • triangular and trapezoidal waste pieces through the stepwise longitudinal section through the web be formed. These also form in the area of the common cutting edge. In this embodiment, that is, when four wall parts extend the tube end edge, the cover-side edge of one row meets the bottom edge of the other row at the common cutting edge of the rows of cuts lying approximately in the middle of the web.
  • the triangular and trapezoidal waste pieces mentioned then result between these, with more triangular than trapezoidal waste pieces occurring, preferably in a ratio of 4: 1.
  • a tube 1 is used here a liquid pack, which is square in cross section. After folding over its four vertical fold lines, the resulting flat side walls 3, 4, 5 and 6 are connected to one another along a longitudinal sealing seam 2 by heat sealing. This results in the cuboid tube 1 shown in perspective in FIGS. 1, 5 and 6 with its upper, cover-side end.
  • the tube is closed with the cover 7, as shown in FIG. 13.
  • the cover wall, generally designated 17, consists of an opening tab 19 attached to a hinge 18, which is connected to the cover wall 17 via an endless line of weakness 20.
  • the outer surface of the cover 7 lies in a first outer plane 21, while the surface in which the line of weakness 20 lies defines an inner second plane 22.
  • the pouring device has a grip tab 23 which is arranged perpendicular to the plane 21 or the second plane 22 below it.
  • the grip tab 23 is formed from pulling and connecting eyes 24, a filler skin 25 and a gripping opening 26.
  • the foot of the grip tab 23 is integrally formed on the flat wall 27 of the opening tab 19, an edge 28 projecting outwards to form a closure support.
  • the opening tab 19 is elongated if one were to look down from above in FIG.
  • a collar 29 protrudes downward from the flat wall 27 of the opening tab 19, which collars at an angle outwards and upwards, as shown at 31.
  • An outer lower part 30 forms the narrower end, and stiffening ribs 32 allow a thin configuration of both the upper wall 27 and the lower wall 33.
  • 34 at the front in extension of the lower wall 33 denotes the pouring edge of the pouring opening.
  • wall panels 9 and 8 are shown attached along the folded edges 11 'and 11 only on the opposite side walls 3 and 5, while the tube 1 with its side walls 4 and 6 has edges 16 on the cover side.
  • the part protruding downward from the upper lid wall 27 engages around the wall panel 8, as shown in FIG. 13 at the broken left end.
  • the construction can be formed at the opposite end.
  • the pouring opening 17 is placed in a corner of the package, e.g. is shown as a recess facing the viewer in FIG. 6, then another attachment to the side walls 3 and 4 is provided under the pouring edge 34 in a manner known per se.
  • the side walls 3 to 6 of the tube 1 are thus extended on the cover side and extended with at least two opposite wall parts 8 and 9 (FIGS. 1 to 3) which are at an angle ⁇ of preferably approximately 90 ° to the adjacent side wall 5, 3 along the lines 11, 11 'stand out folded.
  • the tube 1 is provided on all four side walls 3 to 6 with wall panels 8, 8 ', 9, 9' and around the corresponding fold lines 11, 16 'and 11', 16 '' folded over.
  • the wall panels 8, 8 ', 9, 9' have the shape of narrow tabs, because this saves material, particularly in the production of the blank.
  • a carrier material web 12 coated with plastic is broken off and consists of two webs 13 and 14 and is guided, for example, in direction 15 through the processing machine. Approximately in the middle 35, the two tracks 13, 14 are cut in stages so separated from each other that only the hatched areas shown in FIGS. 3, 4, 7 and 8 arise as waste.
  • the stepped middle cut begins e.g. at point 36, runs upwards to point 37, from there on the right parallel to the conveying direction 15 at the outer end or the edge 10 of the wall panel 8 facing the cover and then down to the left edge of the parallelogram inclined to the point 38, thence along a line 10 ′′ to the right to point 39 and at the same time to point 40, because this creates the parallelogram inclined to the right as a drop, in order to finally circulate around the next wall field 9 of the side wall 3; and to the right in the direction of arrow 15 in a corresponding manner.
  • a cut I after the other is formed with the wall panels 8 and 9, while at the same time corresponding wall panels are cut or punched through the cut on the opposite web 14.
  • the individual blank I is separated from the next blank by separating the webs 13, 14 transversely to their running direction 15 at point 41. With one cut through both webs 13 and 14, two blanks are formed in each case. The bottom configuration and arrangement of the fold lines is not described here.
  • the step cut according to the center 35 in the two tracks 13 and 14 of FIG. 7 is very similar but even simpler. It can be seen that the separating cut consists of a straight line at the height of the center 35 and the punched fields attached, which are hatched and have the shape of triangles or trapezoids with the respective narrower or pointed end down. In other words, the height of the wall panels 8, 9, 9 ', 8 is at the top of the web 13 as well as at the web 14 next following upwards, which results in the described straight section along the center 35.
  • the trapezoidal waste pieces according to FIG. 8b are punched out in the area of the later longitudinal sealing seam 2, and wherever the longitudinal fold lines between the side walls 3 to 6 later run in the tube, the tips of the triangular waste pieces according to FIG. 8a lie.
  • This gap 42 is formed by the adjacent paper edges, of which only the edges 43 and 44 of the adjacent wall panels 9, 9 'are shown in FIGS. 6 and 9, for example. In the illustration in FIG. 10, these two paper edges 43, 44 coincide in the dashed line of the diagonal gap 42 (ideally).
  • FIG. 7 shows a paper edge 43 between the two points 36 and 37 next to the triangular waste piece (FIG. 8a).
  • the cover 7 shows the cover 7 at the top, its plastic up to the line 48, 49, 50 and then further down on the left 51 runs, with the entire area being covered in the diagonal gap 42, as can also be seen from the top right in FIG. 12, and the wall panels 9 and 8 'are covered by about half, because the dashed lines 10 represent the paper edge or more precisely that the edge 10 of the respective wall panel 8, 8 ', 9, 9' facing the center of the cover 7.
  • FIGS. 10 to 12 From the illustration in FIGS. 10 to 12 in particular, it can be seen how, when the cover is molded on in the tube embodiment with the four tab-like wall panels 8, 8 ', 9, 9', the plastic 47 not only flows into the diagonal gap 42 and thereby the adjacent paper edges 43 and 44 of the adjoining tab-like wall panels 9, 9 ', but also extends in all other three spatial directions, so that in the plan view of FIG. 10 it exceeds the limits of the diagonal gap 42 so far that it only lines 48, 49th , 50, 51 stops flowing, ie solidified along these boundary lines.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Closures For Containers (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (7)

  1. Emballage pour matières liquides, notamment le lait et les jus, comportant un tube (1) de section transversale quadrangulaire, tube qui comporte quatre parois latérales planes (3-6), assemblées les unes aux autres par un joint thermoscellé longitudinal (2) et est constitué d'un matériau support tel que le papier ou le carton, enduit de plastique, et comportant un couvercle (7) en plastique, rapporté par injection à l'extrémité du tube (1), le tube (1) étant, en son extrémité côté couvercle, prolongé au niveau de chacune d'au moins deux arêtes (11, 11'), au moins partiellement opposées l'une à l'autre, par un panneau (8, 9 ; 8', 9'), qui dépasse de la paroi latérale (3, 5) selon un angle (α), et en l'arête (10) duquel, dirigée vers le milieu du couvercle (7), est rapporté par injection le couvercle (7) qui, par ailleurs, est rapporté par injection au bord non prolonge du tube (1), caractérisé en ce qu'un panneau (8, 9 ; 8', 9'), se présentant sous la forme d'une patte étroite, est, sur l'arête terminale (11, 11'), côté couvercle, de chacune des deux parois latérales opposées (3, 5 ; 4, 6), assemblé à la paroi latérale correspondante (5, 3 ; 6, 4) par l'intermédiaire d'une ligne de pliage (11, 11' ; 16', 16'').
  2. Emballage selon la revendication 1, caractérisé en ce que, au niveau de chaque arête terminale (11, 11', 16', 16'') côté couvercle des quatre parois latérales (3-6), un panneau (8, 8', 9, 9'), sous forme d'une patte étroite, est assemblé par une ligne de pliage (11, 11', 16', 16'') à la paroi latérale correspondante (5, 3, 6, 4).
  3. Emballage selon la revendication 2, caractérisé en ce que la fente diagonale (42) entre des panneaux voisins (8, 8', 9, 9'), se trouvant dans le plan du couvercle (7), est remplie d'un plastique (47), qui entoure les arêtes en papier voisines (43, 44) et s'étend au moins partiellement dans les trois directions de l'espace au-delà des limites (par exemple 43, 44) de la fente diagonale (42).
  4. Procédé pour fabriquer un emballage pour produits liquides, notamment le lait et les jus, comportant un tube de section transversale quadrangulaire (1), qui comporte quatre parois latérales planes (3-6), assemblées les unes aux autres par un joint thermoscellé longitudinal (2), et est constitué d'un materiau support tel que le papier ou le carton, enduit de plastique, et comportant un couvercle (7) en plastique, rapporté par injection a l'extrémité du tube (1), caractérisé en ce qu'on découpe en échelons, en long et approximativement au milieu (35), une bande de matériau support (12) enduite de plastique, et qu'on la façonne pour former deux bandes (13, 14), formant le tube (1) de l'emballage ; que l'arête à échelon (10), qui en résulte, de chaque bande (13, 14) est prévue comme une arête (10, 16) côté couvercle du tube (1), dont la découpe (1) est séparée de la bande (13, 14) par séparation (en 41) de la bande (13, 14) perpendiculairement à son sens de déplacement (15), et, pour former le tube, est pourvue d'un joint thermoscellé longitudinal ; que deux panneaux (8, 9), en saillie par rapport à l'extrémité côté couvercle du tube (1) dans le prolongement des parois latérales opposées (3, 5), sont repliés dans la surface du couvercle (7), le couvercle (7) étant rapporté par injection à l'arête libre (10) du panneau (8, 9), et l'arête termlnale voisine (10), à échelons, étant elle aussi rapportée par injection aux arêtes (16) des parois latérales non prolongées (46).
  5. Procédé pour fabriquer un emballage pour produits liquides, notamment le lait et les jus, comportant un tube de section transversale quadrangulaire (1), qui comporte quatre parois latérales planes (3-6), assemblées les unes aux autres par un joint thermoscellé longitudinal (2), et est constitué d'un matériau support tel que le papier ou le carton, enduit de plastique, et comportant un couvercle (7) en plastique, rapporté par injection à l'extrémité du tube (1), caractérisé en ce qu'on découpe en échelons, en long et approximativement au milieu (35), une bande de matériau support (12) enduite de plastique, et qu'on la façonne pour former deux bandes (13, 14), formant le tube (1) de l'emballage ; que la coupe (le long de (35) forme l'arête, côté fond, de l'un des tubes (bande 14), ou encore de son arête de pliage inférieure, ainsi que l'arête côté couvercle (10) du tube voisin (provenant de la bande 13) ; les découpes (I) du tube correspondant sont séparées par séparation (41) de la bande (13, 14), perpendiculairement à son sens de déplacement (15), que la découpe correspondante (I) est, pour former le tube, pourvue d'un joint thermo-scellé longitudinal ; et que quatre panneaux (8, 8', 9, 9'), dépassant de l'extrémité couvercle du tube (1) dans le prolongement des parois latérales opposées (3-6), sont repliées, autour des arêtes de pliage (11, 11', 16', 16''), pour arriver dans la surface du couvercle (7), le couvercle (10) étant rapporté par injection à l'arête (10) des panneaux (8, 9, 8', 9'), ainsi que de l'arête terminale voisine à échelons (43, 44), jusqu'au contact avec les arêtes de pliage (11, 11', 16', 16'').
  6. Procédé selon la revendication 4, caractérisé en ce que la coupe longitudinale à échelons (le long du milieu 35) à travers la bande (12) forme des chutes en forme de parallélogramme (Figure 4) ayant des inclinaisons variables.
  7. Procédé selon la revendication 5, caractérisé en ce que la coupe longitudinale à échelons (le long du milieu 35) à travers la bande (12) forme des chutes triangulaires (Figure 8a) et trapézoïdales (Figure 8b).
EP90108977A 1989-06-07 1990-05-12 Emballage pour produits fluides et son procédé de fabrication Expired - Lifetime EP0401546B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2134/89A CH679147A5 (fr) 1989-06-07 1989-06-07
CH2134/89 1989-06-07

Publications (2)

Publication Number Publication Date
EP0401546A1 EP0401546A1 (fr) 1990-12-12
EP0401546B1 true EP0401546B1 (fr) 1993-10-13

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EP90108977A Expired - Lifetime EP0401546B1 (fr) 1989-06-07 1990-05-12 Emballage pour produits fluides et son procédé de fabrication

Country Status (7)

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US (2) US5154342A (fr)
EP (1) EP0401546B1 (fr)
AT (1) ATE95780T1 (fr)
CH (1) CH679147A5 (fr)
DE (1) DE59003057D1 (fr)
DK (1) DK0401546T3 (fr)
ES (1) ES2044305T3 (fr)

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IT1248568B (it) * 1991-06-27 1995-01-19 Luigi Goglio Contenitore in materiale flessibile e relativo metodo di produzione
US6495100B1 (en) * 1996-04-04 2002-12-17 Ethicon, Inc. Method for sterilizing devices in a container
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Also Published As

Publication number Publication date
US5154342A (en) 1992-10-13
DE59003057D1 (de) 1993-11-18
ATE95780T1 (de) 1993-10-15
DK0401546T3 (da) 1993-11-15
ES2044305T3 (es) 1994-01-01
CH679147A5 (fr) 1991-12-31
EP0401546A1 (fr) 1990-12-12
US5288448A (en) 1994-02-22

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