EP0445443B1 - Gaine à replis intérieurs en feuille étirable destinée à l'emballage d'articles - Google Patents

Gaine à replis intérieurs en feuille étirable destinée à l'emballage d'articles Download PDF

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Publication number
EP0445443B1
EP0445443B1 EP19900250308 EP90250308A EP0445443B1 EP 0445443 B1 EP0445443 B1 EP 0445443B1 EP 19900250308 EP19900250308 EP 19900250308 EP 90250308 A EP90250308 A EP 90250308A EP 0445443 B1 EP0445443 B1 EP 0445443B1
Authority
EP
European Patent Office
Prior art keywords
piece goods
hood
wrapped
film
stretch
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.)
Revoked
Application number
EP19900250308
Other languages
German (de)
English (en)
Other versions
EP0445443A1 (fr
Inventor
Martin Aufenvenne
Josef Dipl.-Ing. Van Essen (Fh)
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.)
Beumer Maschinenfabrik GmbH and Co KG
Original Assignee
Beumer Maschinenfabrik GmbH 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6851643&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0445443(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Beumer Maschinenfabrik GmbH and Co KG filed Critical Beumer Maschinenfabrik GmbH and Co KG
Publication of EP0445443A1 publication Critical patent/EP0445443A1/fr
Application granted granted Critical
Publication of EP0445443B1 publication Critical patent/EP0445443B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
    • B65D71/0088—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • 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
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00012—Bundles surrounded by a film
    • B65D2571/00018—Bundles surrounded by a film under tension
    • 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
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00061—Special configuration of the stack
    • 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
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/0008—Load supporting elements
    • B65D2571/00092—Load supporting elements formed by specially placed articles or parts thereof

Definitions

  • the invention relates to a method for wrapping piece goods, in particular piece goods stacks, with a hood consisting of stretch film according to the preamble of claim 1.
  • width of the piece goods or piece goods stack to be wrapped is mentioned above or below, this means the width of the side (s) of the piece goods or piece goods stack that are (at least essentially, when the side gusseted tube is initially folded flat) ) runs parallel to this.
  • Such gusseted hoses have a folded, as it were "flat" initial state with two mutually parallel first side surfaces and two V-shaped inwardly folded second side surfaces.
  • This folding is therefore expedient in order to be able to store such tubular film material wound up into rolls in a space-saving manner (and thus also with a relatively small width).
  • tubular film material folded in this way in the stored state can be opened better than would be the case if the tubular film material were fed to a hood former in the unfolded state, in which the tubular film width would therefore be equal to half the circumference of the tubular film.
  • the transverse seam is formed by welding a gusseted tubular film section, in each case in the as-yet unstretched state of origin, in such a way that the corresponding end section of the gusseted tube supplied from a roll-shaped supply is in the form supplied (and so that the corresponding storage width) is also welded, the weld seam therefore having a length which corresponds to the width of the mutually parallel first side faces of the tubular film.
  • the size of the stretch lies in the stretch range defined above and is at least 10% (according to DE-A-37 07 877, stretch stretches of 30% and more can be provided, stretches of, for example, 20% and more actually being frequent are practiced), the weld seam is inevitably subjected to a very considerable stretch in this way of working, and not only when (cross) stretching before wrapping the piece goods or piece goods stack, in which the tubular film must be widened to such an extent that it can be dragged effortlessly over the piece goods or the piece goods stack, but also afterwards in the wrapped state. This is due to the fact that a stretch film hood is still subject to considerable stretch when it is firmly against the piece goods or piece goods stack.
  • the gusseted tube is only stretched at least 4%, opened before the transverse seam is placed and (cross) stretched and only then in welded to the desired length and separated from the tubular film supply, i.e. in the no longer folded and already stretched state.
  • the unstretched length of which is considerably smaller than the width of the piece goods or piece goods stack to be wrapped, so that harmful tensions occur in the lid area of the hood pulled over the piece goods.
  • this procedure has the consequence that the strength of the film is largely lost in the heating associated with the welding in the area of the transverse seam, so that tearing or even tearing can occur, particularly in the border areas between the transverse seam and adjacent film material multiple handling of load units formed in this way, which can lead to a loss of the required stack strength if there are corresponding tears and always leads to a loss of the urgently required tightness.
  • the present invention has for its object to provide a method of the type described above, with which piece goods can be easily covered with a stretch film hood while avoiding the above disadvantages.
  • the inner film tensions in the upper film section are greater than in the lower one (which can thereby become largely free of tension), so that the lower film sections in the V-shaped double region easily adhere to the tension of the upper film sections create the piece goods to be wrapped and the upper film sections under tension ensure a smooth surface, which is not only highly practical for purely technical reasons, but is also desirable from an aesthetic point of view.
  • the practically unstretched condition of the transverse seam area does not involve any adverse side effects, because in this area no stretch tensions are required for the desired tight or tight wrapping of the piece goods.
  • stretch film stretch film
  • the gusseted tube consisting of stretch or stretch film is intended for the hood-like wrapping of piece goods stacks 4, of which a piece goods piece is shown in FIGS. 1 to 3. In the storage and delivery state, it has two mutually parallel, closely adjacent first side surfaces 8, 8 and two intermediate, V-shaped inwardly folded second side surfaces 9, 9.
  • the (feed) web width b of the gusseted hose 1 or 3 is essentially as large as the width B of the piece goods stack 4, the term "width" being defined above, namely Web width b of the gusseted tube 3 99.5% of the width B of the stack 4, which means that it is approximately the same size.
  • the free end section 3 of the gusseted tube is to be provided with a transverse seam 6 (see FIG. 6) behind it to form a hood before stretching or stretching at a distance from its free end 5 (by welding by means of welding jaws not shown) which of the section forming a hood 3 'after the transverse seam 6 has been placed of the gusseted tube is then separated, the length L (see FIG. 6) of the free end section 3 of the gusseted tube is, in the not yet stretched state, essentially the same as the width B of the stack 4 (namely only 0.5% smaller).
  • the spreading fingers 7 engaging from the lower end of the free end section 3 of the side gusseted tube 7 are initially only moved in the y direction perpendicular to the plane of the side gusseted tube 1 or 3 which has not yet been unfolded (see intermediate state according to FIG. 5). 6 until the complete unfolded state according to FIG. 6 (sd solid lines) is reached, in which the side gusseted tube is not yet stretched or stretched.
  • the gusseted hose (as can be clearly seen in FIG. 6) has a smaller circumference than the packaged goods stack 4 to be wrapped.
  • the relationship b + 2a ⁇ B + A therefore applies.
  • the spreading fingers 7 according to FIG. 6 move diagonally outward to the coordinates x and y and then bring the hood 3 '- in relation to the dimensions of the piece goods stack 4 - to an oversize, indicated by dash-dotted lines in FIG. 6, which is so is dimensioned so that the hood 3 'can then be pulled over the piece goods stack 4 without difficulty.
  • the transverse seam 6 formed by welding in the unstretched state has a length L which corresponds essentially to the width B of the stack 4.
  • the transverse seam 6 is of course also stretched accordingly when stretching to the covering dimension (according to FIG. 6), but after the hood 3 'has tightly applied to the piece goods stack 4 after the covering, the transverse seam 6 in turn obviously takes on the dimension which the Had cross seam 6 before the stretching process, ie it is free from harmful tensions in the sense of the above statements, so that there are no harmful effects on the envelope of the loading unit thus formed.
  • the conditions are such that the stresses occur essentially perpendicular to the transverse seam 6 formed by welding (and no longer, as previously, at any or random angles to the transverse seam 6), especially in the V-shaped double regions of the film More overstretching can occur, such that greater stresses occur in the film below than in the upper film section.
  • the inner film tensions in the upper film section are greater than in the lower one (which can thereby become largely free of tension), so that the lower film sections in the V- shaped double region under the tension of the upper film sections to the Create piece goods stack 4 and the tensioned upper film sections ensure a smooth surface, as this is highly desirable.
  • the supply or feed web width b of the gusseted tube 3 need not be identical to the width B of the piece goods stack 4 to be wrapped to achieve this effect, but that this highly advantageous effect is still achieved, if the supply or feed web width b is approximately up to 95% of the width B of the piece goods 4 to be wrapped.
  • the circumstances when dimensioning the web width b of, for example, about 94.2% of the width B of the piece goods 4 to be wrapped are also (considerably) better than in the prior art, but the range can be delimited with the above information in which the present invention (still) comes to its fullest.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)

Claims (2)

  1. Procédé pour envelopper des marchandises, notamment des piles de marchandises (4), avec une housse (3') de film étirable, selon lequel à partir d'une gaine étirable à soufflet, qui est amenée d'une réserve (1), qui, à l'état de réserve et d'amenée, présente deux premières surfaces latérales (8) parallèles l'une à l'autre et étroitement voisines, ainsi que deux secondes surfaces latérales (9) situées entre les précédentes et pliées en forme "V" vers l'intérieur, et qui présente un périmètre (4a + 2b) inférieur à celui des marchandises (4) à envelopper, on forme une housse (3') grâce au fait que la gaine à soufflet (3), à distance de son extrémité libre, est fermée par soudage au moyen d'un joint transversal (6), et est coupée après le tronçon formant la housse (3'), la housse (3'), pour être passée sur les marchandises (4), étant étirée, après son ouverture totale, à la dimension nécessaire pour son passage sur les marchandises à envelopper, caractérisé par la combinaison des particularités selon lesquelles la gaine à soufflet (3) est amenée aux marchandises (4) à envelopper avec une largeur de bande (d'amenée) (b) de ses premières surfaces latérales (8), qui est sensiblement égale à la largeur (B) parallèle à ces dernières, des marchandises (4) à envelopper, et est fermée, de manière connue en soi, avant l'étirage, par soudage au moyen du joint transversal (6), de sorte que la longueur (L) du joint transversal (6) non étiré est sensiblement égale à la largeur (B), qui lui est parallèle, des marchandises (4), la housse (3') étant étirée après la formation du joint transversal (6), de manière à ce que l'allongement de ses surfaces latérales soit au moins égal à 10%, dans l'état d'enveloppement.
  2. Procédé selon la revendication 1, caractérisé en ce que la gaine à soufflet (3) est amenée aux marchandises (4) à envelopper, avec une largeur de bande (d'amenée) (b) qui est au moins égale à 95% de la largeur (B) des marchandises (4) à envelopper.
EP19900250308 1990-03-06 1990-12-12 Gaine à replis intérieurs en feuille étirable destinée à l'emballage d'articles Revoked EP0445443B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9002586U DE9002586U1 (fr) 1990-03-06 1990-03-06
DE9002586U 1990-03-06

Publications (2)

Publication Number Publication Date
EP0445443A1 EP0445443A1 (fr) 1991-09-11
EP0445443B1 true EP0445443B1 (fr) 1993-08-11

Family

ID=6851643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900250308 Revoked EP0445443B1 (fr) 1990-03-06 1990-12-12 Gaine à replis intérieurs en feuille étirable destinée à l'emballage d'articles

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EP (1) EP0445443B1 (fr)
DE (2) DE9002586U1 (fr)
DK (1) DK0445443T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19643746B4 (de) * 1996-10-23 2004-09-16 Nordenia Deutschland Gronau Gmbh Transportschutz für Großgeräte und Fahrzeuge, insbesondere für Personenkraftwagen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2316127A1 (fr) * 1975-07-04 1977-01-28 Hurdequint Louis Procede de suremballage d'un fardeau par une gaine etirable, et dispositif de mise en oeuvre du procede

Also Published As

Publication number Publication date
DE59002326D1 (de) 1993-09-16
DE9002586U1 (fr) 1990-05-10
EP0445443A1 (fr) 1991-09-11
DK0445443T3 (da) 1993-10-11

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