EP0445443A1 - 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
EP0445443A1
EP0445443A1 EP90250308A EP90250308A EP0445443A1 EP 0445443 A1 EP0445443 A1 EP 0445443A1 EP 90250308 A EP90250308 A EP 90250308A EP 90250308 A EP90250308 A EP 90250308A EP 0445443 A1 EP0445443 A1 EP 0445443A1
Authority
EP
European Patent Office
Prior art keywords
piece goods
film
width
hood
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.)
Granted
Application number
EP90250308A
Other languages
German (de)
English (en)
Other versions
EP0445443B1 (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(A1) "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

  • stretch film stretch film
  • 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 parallel (at least essentially) when the side gusseted tube is fed this runs (run).
  • the piece goods to be wrapped with stretch film therefore also have another significant dimension, namely the "depth”, whereby "width” and “depth” can basically be interchanged, that is, one dimension as a rule has no priority over the other.
  • the dimension of the piece goods to be wrapped is therefore the "width” that occurs when the material is fed initially not yet unfolded side gusset hose runs parallel to this.
  • the difficulties in shrink film technology already indicated above have not been shown to be nearly as serious due to the heat applied and the restructuring of the molecules taking place as is the case with stretch film hood processes.
  • Such gusseted hoses are known to have a folded, as it were "flat" initial state, in which the gusseted tube material has two mutually parallel first side surfaces and two V-shaped inwardly folded second side surfaces.
  • This known 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 is the case when the tubular film material is fed to a hood former in the unfolded state, in which the tubular film width is therefore equal to half the circumference of the tubular film.
  • the transverse seam was formed by welding off a gusseted tubular film section in the as-yet unstretched original state in such a way that the corresponding end section of the gusseted tube supplied from a roll-shaped supply was practically in the form supplied ( and thus also the corresponding storage width of the tubular film) was welded, the weld seam therefore having a length that corresponded to the width of the mutually parallel first side faces of the tubular film.
  • transverse seam which is generally formed by welding
  • the internal stresses present in the film material are lost (largely or even substantially completely) during the plasticization of the film material during the welding process, so that they also after completion of the Welding process in the welded section are practically no longer present, but they remain in the rest of the film material, so that there may be tears or even tears, especially in the border areas between (generally welded) transverse seam and adjacent film material, especially when multiple wraps formed in this way
  • Load units which can lead to a loss of the required stack strength if there are corresponding tears and always to a loss of the urgently required tightness.
  • the present invention has for its object to provide a gusseted tube of the type described above, with which piece goods or piece goods stack can be easily wrapped with a stretch film hood while avoiding the above and other disadvantages.
  • the inner film tensions in the upper film section are greater than in the lower film section (which can be largely free of tension), so that the lower film sections in the V-shaped double region are easy
  • Apply the tension of the upper film sections to the piece goods to be wrapped and the tensioned upper film sections ensure a smooth surface, which is highly useful not only for purely technical reasons, but is also desirable from an aesthetic point of view.
  • the practically unstretched condition of the transverse seam area due to the configuration of the side gusset tube according to the invention does not involve any disadvantageous 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.
  • the web width b of the gusseted hose 1 or 3 is essentially the same as the width B of the stack 4, the term "width" being defined above, namely the web width b Side gusseted hose 3 99.5% of the width B of the piece goods stack 4, with which they in is substantially 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)
  • a transverse seam 6 see FIG. 6
  • the length L see FIG. 6 of the free end section 3 of the gusseted tube in the not yet stretched state is practically substantially the same as the width B of the piece goods stack 4 (namely only 0.5% smaller).
  • the spreading fingers 7 engaging from the lower end of the free end section 3 of the gusseted tube are initially only moved in the y direction perpendicular to the plane of the 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 side gusseted tube (as can be clearly seen from FIG. 6) has a smaller circumference than the piece goods stack 4 to be wrapped.
  • the relationship b + 2a ⁇ B + A therefore applies.
  • the hood 3 'formed in each case from the free end section 3 of the gusseted tube after the transverse seam 6 has been placed and this section has been separated from the supply 1 ( stretched).
  • 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 which corresponds essentially to the width B of the stack 4.
  • the transverse seam 6 is of course also stretched accordingly when stretching (according to FIG. 6), but after the hood 3 'has fitted tightly to the piece goods stack 4 after the covering, the transverse seam 6 again takes on the practical dimension that the transverse 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 wrapping 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), in particular in the V-shaped double regions of the film Overstretching can no longer 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- Form the double area easily under the tension of the upper film sections on the piece goods stack 4 and the tensioned upper film sections ensure a smooth surface, as this is highly desirable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
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 true EP0445443A1 (fr) 1991-09-11
EP0445443B1 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

Country Status (3)

Country Link
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

Citations (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

Patent Citations (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
EP0445443B1 (fr) 1993-08-11
DE9002586U1 (fr) 1990-05-10
DE59002326D1 (de) 1993-09-16
DK0445443T3 (da) 1993-10-11

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