EP1072514B1 - Procede et appareil pour envelopper des marchandises, en particulier des piles de marchandises, avec une housse de film etirable - Google Patents

Procede et appareil pour envelopper des marchandises, en particulier des piles de marchandises, avec une housse de film etirable Download PDF

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Publication number
EP1072514B1
EP1072514B1 EP00115733A EP00115733A EP1072514B1 EP 1072514 B1 EP1072514 B1 EP 1072514B1 EP 00115733 A EP00115733 A EP 00115733A EP 00115733 A EP00115733 A EP 00115733A EP 1072514 B1 EP1072514 B1 EP 1072514B1
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EP
European Patent Office
Prior art keywords
hood
transverse
spread
film
transverse seam
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
EP00115733A
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German (de)
English (en)
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EP1072514A1 (fr
Inventor
Werner Uthoff
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 GmbH and Co KG
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Beumer Maschinenfabrik GmbH and Co KG
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Filing date
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Publication of EP1072514A1 publication Critical patent/EP1072514A1/fr
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Publication of EP1072514B1 publication Critical patent/EP1072514B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/135—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state for palletised loads

Definitions

  • the invention further relates to a device for carrying out the above Generically described packaging method according to the preamble of Claims 2.
  • the length of the edges was the Hood spreading cross-sectional area of a shrink film hood each by a certain Factor greater than the respective adjacent, parallel edge of the stack cross-sectional area, so that a shrink hood in Aufsp Rudlitz already had a stall condition in which their hood sidewalls encircling a i.w. constant safety distance to the stack of goods had.
  • gusseted hoses are formatted to be used in the (unstretched) Spreading state a hood-spreading cross-sectional area geometrically similar to the stack cross-sectional area spanned or limited, but of course with the difference for shrink hood packaging technology, that the side edges of the hood spread cross-sectional area each i.w. by the same factor smaller than the adjacent ones, parallel stacked side surface, and has the thus formatted and fed stretch film gusseted tube welded during the hood formation with a cross seam.
  • EP 0 399 540 A1 is either already geometrically dissimilar in the feed state (in which case the spreading and transverse stretching of the hood does not occur at the outer edges of the hood) Gusseted hose or from these takes place, but not in the area folded tube side surfaces), or before the transverse seaming in the transverse seam area is reformatted according to the feed state.
  • the present invention is accordingly. the task is based on a method and a To provide device for its implementation, in whose / their application the described Problems are reliably avoided even with very large transverse stress.
  • iw is equal to the corner edge distance Y, wherein the corner edge distance Y, the "stretching reserve" of the hood cover characterizes (such that the horizontal expansion of the lid in Querstretchen the hood side walls due to the filmless in the lid area only starts or becomes significant if this "stretch reserve "is consumed, de r cover thus under horizontal tension device)> 0 is (as already EP 0 399 540 for Querstretchhong 10% ⁇ ⁇ q ⁇ 30 - 40% teaches), but further is to be considered that the relative hood lid yield value Y / X at a Cross-stretch of about 50% -60% iw is equal to 1.
  • FIGS. 7a-9b show sections corresponding to FIGS. 4a-6b of the cover of a cover according to the cross-seam area.
  • EP 0 399 540 formatted hood wherein Fig. 7a corresponds to Fig. 4a, Fig. 7b Fig. 4b, Fig. 5a Fig. 8a, ..., and Fig. 9b Fig. 6b.
  • FIGS. 10-12 show an enlarged view of the upper film layer f O (FIG. 10), the middle film layer f M (FIG. 11) and the lower film layer f U (FIG. 12) ) of the hood cover in the still unexpanded Aufsp Marin, in each case in a graphic overlay on the one hand gem.
  • the formatting according to EP 0 399 540, and on the other hand gem. the prior art prior to the creation of the method.
  • EP 0 399 540 that is to say in a respective combination of FIGS. 4 a and 7 a (FIG. 10), or of FIGS. 5 a and 8 a (FIG. 11), or of FIGS. 6 a and 9 a (FIG. 12).
  • the hood cover which hangs up, later in the horizontal biaxially stretched state to the cargo top has so shaped V already in the unstretched spread state two or triangular foil Doppelungs Suitee Qe 1 -e 2 and PE 3 -e s 4 (. Fig. 3 ), or with the terms of the corner points thereof slightly different names of Fig. 4 to 12 QBC or PAD.
  • a stretch film hood 3 formed from a gusseted hose is spread free of expansion at its vertical corner edges e 1 -e 4 (FIGS. 3, 3 ') or its corner points A-C (FIGS. 4 to 12), then the baselines of the triangular shape must be spread form foil Doppelungs Schemee or to the edge or a r a l open towards the foil bags, which isosceles triangles e 1 -QE 2 or e 3 -Pe 4 (s. Fig. 3) not only in the side edges of a l or lie a r of the hood cover, but also respect. Their length match with these.
  • the aforementioned triangles e 1 -Qe 2 and e 3 -Pe 4 - as will be shown - in contrast to the realization of the teaching gem.
  • EP 0 399 540 the triangles have relatively large edges; their equal legs e 1 -Q and e 2 -Q and e 3 -P and e 4 -P extend into the corner edges e 1 - e 4 of the hood cover, or its vertices AD.
  • FIGS. 1 to 3 are shown in FIGS. 4 to 6, in the drawing figures respectively marked with a) in the tension-free stretched state, and in the drawing figures respectively marked with b) during the horizontal transverse stretching (wherein also in these figures for better comparison in addition also the unstretched Aufsp Marin in accordance with the respective a) representation is located), in which the four arranged at the corners of the rectangle ABCD, the hood 3 first stretch-free spreading finger or bow-like elements 7 gem. 4b, 5b and 6b arrows are moved from its spread over the intermediate position shown in Figs. 4b, 5b and 6b in the stall position.
  • hood side walls are shown dotted in this coating position in plan view.
  • the hood side walls are circumferentially at a distance ü to the respective adjacent, parallel hood side wall. This distance is usually about 10 - 15 cm. It is intended to prevent a collision of the lifting, spreading and stretching elements 7 holding lifting frame with the stack 2 when lowering the lifting frame during the coating process with certainty when coating.
  • the length l 6 of the transverse weld 6 is equal to the feed width b of the gusseted tube, and the height h of the foil triangles BCQ and APD is equal to the fold depth h of the gusseted tube (see Fig. 2).
  • EP 0 399 540 is either already formatted in the stored state, or otherwise formatted in front of the transverse seaming at least in its intended cross-seaming section so that the length l 6 'of the transverse weld 6 and thus the cross-seam ratio Q is greater than in the example gem.
  • Figs. 4-6. The latter is gem.
  • FIGS. 7 to 9 namely 0.935; the length l 6 of the transverse weld 6 is therefore 93.5% of the stack size B parallel to it.
  • FIGS. 10-12 in which the two embodiments of FIGS. 4 - 6 on the one hand and Figs. 7 - 9 on the other superimposed on each other are shown enlarged, of course, in turn, the the same reference numerals have been selected, but to distinguish between the reference numerals for the embodiment acc. FIGS. 7-9 are respectively underlined.
  • EP 0 399 540 formatted hood 3 in the transverse seam area and correspondingly longer transverse weld 6 are significantly smaller, since the length h of the gussets thereby (see Fig. 4 - 6) necessarily necessarily smaller, and the size of the triangles yes, as already was executed, is determined by the side fold depth h, which is equal to the height h of both isosceles triangles Q-B-C and P-A-D, respectively.
  • the elements 7 first '1, e' 4 reach the vertical corner edges e 2, e '3 and e' of the stack 2, and finally in its illustrated with thick dotted lines stall position 7 "with e '' 1 and e '' 2 or e'' 3 or e'' 4 designated vertical corner edges of the hood side walls in the designated overcoating position 3 0 of the hood 3'.
  • hood formatting can lie in the transverse seam area before laying the transverse seam 6 between the two limiting cases described above, being again expressly noted that - regardless of which formatting is selected in each case - the transverse stretching by means of the elements 7 (or possibly other elements which replace the elements 7 in the transverse stride as it were) each preferably iw of points or vertical lines of the parallel to the transverse seam 6 hood side walls takes place on the in Fig. 13 with thick dash-two-dot lines shown (reference) lines L A and L B , because yes all hood side walls already crosswise stretched from the unstretched Aufsp Dahl too in the stall position iw even cross-stretched.
  • the hood formatting takes place in the area of the transverse seam 6 to be laid by welding off.
  • the drawn in Fig. 13 with thin dotted lines form, so that the length l 6 of the transverse seam 6 extends between the points 40 and 41, it is thus significantly larger than b, and the two with the same tube circumference and the same provided transverse strain Triangles of the pocket-forming V-shaped doubling areas between the points 42, 43 and 44 (see left part of Fig. 13; on the right side, the same is mirror-symmetrical, obviously much smaller than in a formatting according to that shown in Fig.
  • the lateral fold depth h is only 150 mm.
  • the transverse seam ratio Q > 0.85 (or 85%) and even greater than 0.95 (or 95%), namely 1.0 and 100%, as it is for transverse strains in the usual range of about 15 - 30% not only enough, but gem.
  • EP 0 399 540 is even particularly useful to avoid the above-described adverse events in the hood cover, this condition is sufficient for large transverse stretch from about 50% (in this case: 63%) is not sufficient to these detrimental effects in the hood cover due to the prevailing tensions to avoid there, which result in the Querstretchen the hood side walls by itself.
  • EP 0 399 540 discloses the size of the triangular V-shaped foil doubling areas, e.g. with regard to the triangle height h or the leg length as a characteristic measure can choose.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Basic Packing Technique (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Claims (2)

  1. Procédé pour l'emballage de marchandises essentiellement à aire surfacique horizontale à angles droits (2'), en particulier de piles de marchandises (2) de forme parallélépipédique ou cubique avec une housse de film étirable étirée transversalement dans le plan horizontal (3') dans lequel une gaine pelliculaire (3), disposée à plat à l'état de stockage, avancée à partir d'un distributeur (de gaine) dont le périmètre non soumis à une traction (U3') est au moins plus petit de 10 % que le périmètre (Ust) de la marchandise (2) à emballer, est formée près d'une housse (3') tandis que la gaine pelliculaire (3), disposée à une distance permettant son engagement libre avec un cordon de soudure, est dessoudée et sectionnée sans discontinuité au-dessus du cordon de soudure (6); dans lequel la housse (3') ainsi formée est étirée sur la marchandise à emballer (2) de telle manière que son extrémité fermée repose, à l'état prêt à l'emballage (= état d'installation de la housse) sur la surface supérieure (2') de la marchandise (2), comme couvercle de housse, en allongement horizontal biaxial obtenu par un allongement transversal complet des parois latérales de la housse ; dans lequel la housse (3'), avant l'étirage transversal et la pose en recouvrement sur la marchandise à emballer (2), essentiellement non soumise à une traction, est tout d'abord appliquée intégralement au pistolet de telle manière que l'aire surfacique horizontale scellée des parois latérales de la housse pour application au pistolet de la housse, est au plan géométrique essentiellement semblable à l'aire surfacique horizontale de la marchandise (2) et, ainsi,
    que deux premiers bords (e1-e2-e3-e4) parallèles, de longueurs essentiellement identiques, de l'aire surfacique pour application au pistolet de la housse (e1-e3 ;e2-e4) se trouvent parallèles au cordon de soudure (6) de la housse (3') de même qu'aux surfaces latérales définissant la largeur (B) de la marchandise (2) ;
    que deux premiers bords (e1-e2-e3-e4) parallèles, de longueurs essentiellement identiques, de l'aire surfacique pour application au pistolet de la housse (e1-e3;e2-e4) se trouvent orthogonaux aux deux premiers bords (e1-e3 ;e2-e4) ;
    et que le couvercle de housse est formé de trois pellicules de film disposées les unes au-dessus des autres (fO, fM, fU), à savoir
    d'une pellicule de film (e4) supérieure orthogonale formée transversalement sur sa largeur intégrale (b = 16) orthogonale au cordon de soudure (6) dont la taille et la forme sont identiques à celles de l'aire surfacique pour application au pistolet (e1-e2-e3-e4),
    de deux pellicules de film médianes (e4) formant des sections de film situées l'une au-dessus de l'autre en symétrie inverse (BM-QM-CM, AM-PM-DM), en forme respective de triangle isocèle, dont la ligne de hauteur (QM-FM;PM-DM) est respectivement formée d'une section externe du cordon de soudure (6) et dont la ligne de base (BM-CM;AM-DM) est respectivement située dans la ligne de recouvrement (LA ou LB) formée dans l'un des deux bords de l'aire surfacique pour application au pistolet (e1-e2-e3-e4), et
    de deux pellicules de film inférieures (fU) formant, par rapport aux sections de film triangulaires médianes, (BM-QM-CM;AM-PM-DM) des sections de film inférieures triangulaires, congruentes (BU-QU-CU;AU-PU-DU), lesquelles forment respectivement avec les sections triangulaires respectives situées les unes au-dessus des autres des pellicules de film médianes (e4) du couvercle de housse une poche pelliculaire ouverte sur la ligne de base des triangles (B-C ou A-D) ;
       et dans lequel la housse ainsi appliquée au pistolet (3') est alors étirée transversalement sur une aire surfacique de recouvrement (30), du recouvrement requis, tandis que les éléments (7) effectuant tout d'abord l'application au pistolet, puis l'étirage transversal, sont déplacés de leur position, dans laquelle ils effectuent l'application au pistolet des parois latérales de la housse essentiellement soumises à aucune traction, respectivement horizontales dans la direction oblique vers l'extérieur, jusqu'à une position de recouvrement, dans laquelle les parois latérales de la housse étirée transversalement, sont respectivement situées à une distance de sécurité de recouvrement (ü) par rapport à leur paroi latérale de marchandise adjacente respective, qui est essentiellement constante, de sorte que la distance des bords angulaires (e''1, e''2, e''3, e''4) de la housse (3'), dans l'état de recouvrement, à leurs bords angulaires (e'1, e'2, e'3, e'4) respectivement adjacents de la marchandise (2) est de taille essentiellement identique, respectivement, sachant que la gaine (3), au moins dans la zone de sa largeur relative au cordon de soudure transversal (6) en formation, lors de la pose du cordon de soudure transversal (6), est ou sera ainsi formée que les deux côtés latéraux respectifs existants, de longueurs identiques (B-Q,C-Q ou A-P,D-P), des deux zones d'appariement du film formateur de poche, formées en V ou en triangle (BM-QM-CM,BU-QU-CU ou AM-PM-DM, AU-PU-DU) du couvercle de housse, s'étendent vers l'extérieur en l'état appliqué au pistolet de la housse en formation, ayant une section latérale (M-Q, K-Q, P-P, N-P) d'une longueur X jusqu'aux deuxièmes bords (B-C = ligne de recouvrement La ; A-D = ligne de recouvrement LB) se trouvant respectivement adjacents et orthogonaux au cordon de soudure transversal (6), essentiellement semblables au plan géométrique à l'aire surfacique d'application au pistolet de la housse (e1-e2-e3-e4) formée par rapport à l'aire surfacique horizontale de la marchandise et sachant que les deuxièmes parois latérales de la housse mutuellement adjacentes des bords angulaires (e1, e2, e3, e4) à l'état appliquées au pistolet non soumises à une traction se trouvent respectivement dans un état de bord angulaire Y par rapport à leurs bords externes adjacents (g1, g2, g3, g4) du pli adjacent (9), caractérisé en ce que la longueur X de la section de côté latéral (M-Q, K-Q, P-P,N-P) d'un étirement latéral (σP) d'environ 50 % à 60 %. qui s'étend dans l'aire surfacique pour application au pistolet de la housse est essentiellement identique à la distance au bord angulaire Y.
  2. Dispositif pour l'emballage de marchandise essentiellement à aire surfacique horizontale à angles droits (2'), en particulier de piles de marchandises de forme parallélépipédique ou cubique avec une housse de film étirable étirée transversalement dans le plan horizontal (3') pour la mise en oeuvre du procédé selon la revendication 1, comprenant un distributeur de gaine par dévidage et un mécanisme d'alimentation au moyen duquel la gaine pelliculaire, disposée à plat à l'état stocké, est avancée, comprenant un organe de soudure avec lequel la poche pelliculaire avancée est dessoudée au moyen d'un cordon de soudure transversal (6), un espacement étant ménagé pour son alimentation, et comprenant un mécanisme de séparation au moyen duquel la section de gaine dessoudée est sectionnée en amont du cordon de soudure transversal (6), de même que des éléments d'application au pistolet, de rainurage et d'étirage (7), au moyen desquels la section de gaine pelliculaire avancée, prévue pour la formation de la housse, reçoit un rainurage dans un pli, avant la pose du cordon de soudure transversal (6), et la housse (3') formée, appliquée intégralement au pistolet avant l'étirage transversal des parois latérales de la housse, n'est soumise à aucune traction par l'aire surfacique d'application au pistolet de la housse, de telle sorte que les parois latérales de la housse, par leur déplacement postérieur oblique dans le plan horizontal vers l'extérieur des parois latérales de la housse s'allongent de manière essentiellement uniforme, sachant que la section de gaine formant la housse (3') dans la zone du cordon de soudure transversal (6) est ainsi formée, ou avant la pose du cordon de soudure transversal (6) sera ainsi formée, que la longueur (l6) du cordon de soudure transversal (6) est plus grande que la longueur des deux bords de l'aire surfacique d'application au pistolet de la housse parallèles au cordon de soudure transversal (6), caractérisé en ce que l'actionnement des éléments d'application au pistolet et d'étirage (7) avant la pose du cordon de soudure transversal (6), par un étirage transversal imparti (σQ) d'au moins environ 50 % aboutit à ce que, par un étirage transversal (σQ) dans l'intervalle d'environ 50 % à 60 %, la longueur X de la section angulaire (M-Q, K-Q, P-P,N-P) s'étendant dans l'aire surfacique d'application pistolet de la housse est essentiellement identique à la distance au bord angulaire Y.
EP00115733A 1999-07-23 2000-07-21 Procede et appareil pour envelopper des marchandises, en particulier des piles de marchandises, avec une housse de film etirable Expired - Lifetime EP1072514B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19933856A DE19933856A1 (de) 1999-07-23 1999-07-23 Verfahren zum Umhüllen von Stückgut, insbesondere eines Stückgutstapels, mit einer Stretchfolienhaube, und Vorrichtung zur Durchführung dieses Verfahrens
DE19933856 1999-07-23

Publications (2)

Publication Number Publication Date
EP1072514A1 EP1072514A1 (fr) 2001-01-31
EP1072514B1 true EP1072514B1 (fr) 2005-04-27

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EP00115733A Expired - Lifetime EP1072514B1 (fr) 1999-07-23 2000-07-21 Procede et appareil pour envelopper des marchandises, en particulier des piles de marchandises, avec une housse de film etirable

Country Status (5)

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EP (1) EP1072514B1 (fr)
AT (1) ATE294103T1 (fr)
DE (2) DE19933856A1 (fr)
DK (1) DK1072514T3 (fr)
ES (1) ES2238953T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10103261A1 (de) * 2001-01-25 2002-08-14 Msk Verpackung Syst Gmbh Verfahren zum Überziehen eines Flachschlauches
EP1275582B1 (fr) * 2001-07-11 2005-05-25 Maschinenfabrik Möllers GmbH Appareil pour envelopper une pile de marchandises avec une housse de film étirable
FR2848986B1 (fr) * 2002-12-24 2005-10-07 Prot Decoration Conditionnemen Procede d'habillage de produits avec des manchons etirable et installation pour la pose de tels manchons

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399540A1 (fr) * 1989-05-26 1990-11-28 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises avec une housse de film étirable et ensemble d'emballage formé avec ceux-ci

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3873583D1 (de) * 1987-03-11 1992-09-17 Lachenmeier Kurt Aps Verfahren und vorrichtung zum verpacken von gegenstaenden mit einer bahnfoermigen kunststoffolie.
DE3918311C3 (de) * 1988-06-03 1997-10-09 Beumer Maschf Bernhard Verfahren und Vorrichtung zum Umhüllen von Stückgut, insbesondere Stückgutstapeln, mit einer Stretchfolienhaube
DE4235409C1 (de) * 1992-10-21 1994-01-13 Moellers Maschf Gmbh Verfahren und Vorrichtung zum Umhüllen eines Stapels mittels Stretchfolie

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399540A1 (fr) * 1989-05-26 1990-11-28 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises avec une housse de film étirable et ensemble d'emballage formé avec ceux-ci

Also Published As

Publication number Publication date
EP1072514A1 (fr) 2001-01-31
ATE294103T1 (de) 2005-05-15
ES2238953T3 (es) 2005-09-16
DK1072514T3 (da) 2005-08-29
DE19933856A1 (de) 2001-01-25
DE50010144D1 (de) 2005-06-02

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