EP0467729B1 - Procédé et machine d'emballage de la face latérale et d'une face d'extrémité d'une charge - Google Patents

Procédé et machine d'emballage de la face latérale et d'une face d'extrémité d'une charge Download PDF

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Publication number
EP0467729B1
EP0467729B1 EP91401689A EP91401689A EP0467729B1 EP 0467729 B1 EP0467729 B1 EP 0467729B1 EP 91401689 A EP91401689 A EP 91401689A EP 91401689 A EP91401689 A EP 91401689A EP 0467729 B1 EP0467729 B1 EP 0467729B1
Authority
EP
European Patent Office
Prior art keywords
film
axis
roll
face
pivot
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
EP91401689A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0467729A1 (fr
Inventor
Jean Paul Martin-Cocher
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.)
Newtec International SA
Original Assignee
Newtec International 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 Newtec International SA filed Critical Newtec International SA
Publication of EP0467729A1 publication Critical patent/EP0467729A1/fr
Application granted granted Critical
Publication of EP0467729B1 publication Critical patent/EP0467729B1/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
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
    • B65B11/045—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
    • B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary articles

Definitions

  • the invention relates to a method and a machine for packaging the side face and an end face of a load.
  • the film used is heat-shrinkable or stretchable.
  • the load is fixed or moved pivotally around its vertical axis or horizontally sliding parallel to its length.
  • the packaging is produced in the form of a straight wrapping or, the more often, helical and concerns the lateral face of the load (generally vertical).
  • the cylindrical lateral face and the two circular end faces are covered with a reel of paper of generally cylindrical shape by wrapping the reel of film remaining in a generally fixed location and the reel of paper being doubly displaced by pivoting around a vertical axis and around its axis of revolution, horizontal.
  • this technique is linked to the cylindrical shape of the load and cannot be transposed and applied to a load such as a palletized load.
  • the end faces receive as many film layers as axial film layers on the cylindrical side face, which is generally excessive and has drawbacks.
  • the aim is to improve the cohesive force applied by the film to the palletized load and, to this end, the film strip is applied to the tops of the load.
  • US-4,409,776 describes an apparatus for wrapping a palletized load with a film having a sticky face.
  • a first layer of film is applied to the palletized load, the non-sticky side facing the load.
  • An inversion of the reel (rotation of 180 °) makes it possible to present the sticky face of the film present on the reel opposite the sticky face of the first layer of film wrapped on the load.
  • the wrapping of the second layer ensures the adhesion of the two layers of the film.
  • the invention therefore aims to solve the problem of covering at least one end face of a load with a packaging film when the lateral face of the load is also covered with packaging film by the wrapping technique. .
  • the invention provides a machine for packaging a load by means of plastic film according to the features of claim 21.
  • the invention offers many advantages: the same film can be used both for covering the lateral face and one or two end faces and this without discontinuity. The cohesive force of the load, its protection and its tightness are improved. The technical qualities of the film can be implemented for both the lateral face and the end face (s). The simultaneous overlapping of the lateral and end faces is obtained without annoying excess thicknesses, without excessive multiplication of superimposed film layers.
  • the machine according to the invention essentially comprises the means used for wrapping with, in addition, only the second relative pivoting used for covering the end face. The operating rate of such a machine is high, the machine moreover being simultaneously simple and reliable.
  • the invention is more particularly applicable to a palletized load with which the vertical lateral face and at least one of the two horizontal end faces and more especially the upper end face, but also, optionally, the face of are covered. lower end, partially, in the vicinity of the lateral face.
  • the invention makes it possible to ensure or strengthen the connection between the palletized load and the pallet or to reinforce the false pallet.
  • the invention is also applicable to a long load arranged horizontally. The invention also offers the advantage of being applicable as it is but with loads of different dimensions.
  • a strip of film is used, the width of which is at least equal to half of the largest dimension of the end face to be covered so as to allow total covering. of the end face to be covered by several layers of film.
  • the relative pivoting movement is carried out around the second pivot axis of the order of a quarter to three quarters of a turn.
  • the relative pivoting movement is carried out around the first pivot axis without substantial stopping between the covering of the lateral face and that of the end face to be covered.
  • a relative sliding movement is carried out of the axis of the film reel and of the load in a general direction parallel to the first pivot axis.
  • the relative pivoting movement is carried out around the second pivot axis when the film reel has been brought into a general position away from the side face and the end face to be covered and the film strip leaves the side face at vicinity of the end face to be covered.
  • a relative sliding movement is made of the axis of the film reel and of the load in a general direction parallel to the first pivot axis.
  • several passes are made to cover the end face to be covered so that the film strip is arranged in several overlapping, crossed layers.
  • a film strip is used, the width of which is a fraction of the distance separating the two end faces of the load. At least one helical wrapping of the lateral face is carried out.
  • This wrapping is with contiguous turns or overlapping.
  • the end face is preferably covered between two helical wrapping in opposite directions. Alternatively, the two end faces of the load are covered.
  • stretch film is used and in a second embodiment, heat-shrinkable film.
  • stretch film the film strip is stretched between the load and the film reel or by pre-stretching before its application to the load. The film strip is also stretched when covering an end face to be covered.
  • a load having a lateral face extending in a generally vertical direction and end faces extending in a generally horizontal direction.
  • the first relative pivot axis is then of generally vertical direction and the second relative pivot axis of generally horizontal direction.
  • the load is pivotally driven about its vertical axis, the axis of the film reel being displaced in displacement around a horizontal axis intersecting or close to the pivot axis of the load and , optionally, sliding in a generally vertical direction.
  • the load is fixed, the axis of the film reel being pivoted about the vertical axis of the load, pivoting around a horizontal axis intersecting or close to the axis of the load and possibly sliding in a general vertical direction.
  • a load is used having a lateral face extending in a generally horizontal direction and end faces extending in a generally vertical direction, the first relative pivot axis being of general direction horizontal and the second relative pivot axis being of general direction substantially orthogonal to a horizontal axis.
  • the machine further comprises third means for ensuring a relative sliding movement of the axis of the film reel and means for supporting the load in a general direction parallel to the first pivot axis, the control means acting on the third sliding means to coordinate their operation with that of the first and second relative pivoting means.
  • the machine can also further comprise means for gripping an initial end portion of the film strip; means for securing an end end portion of film strip on film already deposited or on the load; and means for cross-cutting the film strip.
  • the second relative pivoting means provide relative locking in at least two operating positions. These are angularly spaced from each other by about a quarter to three quarters of a turn.
  • the load support means comprise a horizontal general direction table;
  • the means for supporting a film reel comprise at least one mast of general vertical direction and a film reel support carriage carried directly or indirectly by the mast, mounted to slide vertically and pivot about a horizontal axis orthogonal to the axis of the film reel.
  • the table is mounted to pivot around an axis of generally vertical direction and the mast is fixed.
  • the carriage is arranged to describe a double movement of vertical sliding and rotation along a ring surrounding the table.
  • FIGS. 1A to 1J a palletized load 1 limited by a lateral face 2 closed on itself and two faces of horizontal ends respectively upper 3 and lower 4.
  • a load has an axis general vertical 5.
  • the lateral face 2 comprises four panels 2a, 2b, 2c, 2d situated in vertical planes two by two perpendicular to each other defining four vertical edges 6 parallel to the axis 5.
  • the method and the machine according to the invention are also applicable to other types of loads, in particular extending longitudinally in the horizontal direction.
  • the palletized load 1 is packaged by means of a plastic film 7 coming from a film reel 8 of axis 9.
  • the film 7 covers the lateral face 2 and the upper horizontal face 3.
  • the invention is also applicable to cases where the film 7 covers other faces of the load 1 or covers the faces differently.
  • the method uses a packaging machine (FIG. 2) which comprises means 10 for supporting the load 1; means 11 for supporting the film reel 8 and first means for ensuring a relative pivoting movement of the axis 9 of the film reel and means 10 for supporting the load around a first pivot axis having a direction general parallel to the axis of the film reel.
  • a packaging machine FIG. 2 which comprises means 10 for supporting the load 1; means 11 for supporting the film reel 8 and first means for ensuring a relative pivoting movement of the axis 9 of the film reel and means 10 for supporting the load around a first pivot axis having a direction general parallel to the axis of the film reel.
  • the support means 10 comprise a table with a vertical axis 5.
  • the means 11 comprise a vertical mast 13 placed next to the table 10 on a support forming the sole 14.
  • On the mast 13 is slidably mounted vertically, by means of sliding members 15, a carriage 16 supporting the coil 8.
  • the invention is also applicable to other types of machine, in particular those with a fixed table and film reel with an axis rotating around the table, or even those comprising a horizontal conveyor carrying a load. extended horizontally in the longitudinal direction, the film reel being of horizontal axis and surrounding this conveyor.
  • the film 7 has a width which is a fraction of the distance between the two end faces 3 and 4 while being at least equal to half of the largest dimension of the face end to be covered.
  • the width of the film strip is of the order of half the diagonal of the upper horizontal face 3 ( Figure 2).
  • the film used is a stretch film which is stretched before being applied to the load by means of a pre-stretching device 17 carried by the carriage 16.
  • This pre-stretching device 17 may include one or more rollers on which the film 7 passes so that the film is unwound downstream at a speed greater than the speed upstream.
  • an initial end portion 18 of the film strip 7 is associated with the lateral face 2 of the load by means, for example, of a holding clamp 19 carried by or in the vicinity of the table. 10. This association occurs in the vicinity of the lower horizontal face 4 opposite the upper horizontal face 3 to be covered. In this situation and in the envisaged embodiment, the axis 9 of the film reel 8 is placed horizontally, the film 7 deposited on the load being, consequently, of reduced width.
  • the relative pivoting movement of the axis 9 of the film reel 8 and of the load 1 (in this case the pivoting of the load) around the first axis 12 allows, gradually, the deposition of the film strip 7 on the side face 2.
  • At least one revolution of the palletized load 1 is carried out so that the longitudinal edge of the film strip 7 overlaps the upper horizontal face 3 in the immediate vicinity of the side 2.
  • the same film 7 as that, coming from the reel 8, intended for packaging the lateral face 2, is deposited on the end face 3.
  • At least one pass is made in which (FIG. 1D) a relative pivoting movement of the axis 9 of the film reel 8 and of the load around a second pivot axis 20 having a general direction orthogonal to the first pivot axis 12 and to the axis 9.
  • the film reel 8 is then brought into a general position close to the end face 3 to be covered . And, in this situation, the relative pivoting movement is carried out around the first axis 12.
  • FIG. 1D This sequence is clearly visible in FIG. 1D in which we see that, compared to the previous step illustrated in FIG. 1C, the film reel 8 being in the general situation obtained in step 1C, a pivoting of the film reel 8 of the order of a quarter turn but which can go up to three quarters of a turn, the axis 9 being brought horizontally.
  • the film 7 then takes a general configuration at an angle or twisted between a vertical edge 6 of the lateral face 2 and the film reel 8. In this configuration, the film 7 passes over the end face 3 to be covered, optionally is applied to part of it.
  • the film 7 was applied to the upper horizontal end face 3 to be covered.
  • FIGS. 1G and 1H several passes are illustrated making it possible to cover the end face 3 with the film strip 7, the latter being arranged in several overlapping, crossed layers.
  • the axis 9 of the film reel 8 can then be pivoted around the second pivot axis 20 until it is brought into horizontal position ( Figure 1J) in a position similar to that shown in Figure 1A.
  • the clamp 19 previously opened comes to recover the film 7.
  • the film strip 7 can then be cut. Its end end portion 21 can be secured to the previously deposited film or to the load 1 itself.
  • the invention is also applicable to the case where the load has a horizontal longitudinal direction, the film reel 8 rotating around this load, in a vertical plane transverse to the direction of longitudinal advancement of the load.
  • the end faces extend in a generally vertical direction
  • the first relative pivot axis is in a generally horizontal direction
  • the second relative pivot axis is in a general direction substantially orthogonal to a horizontal axis.
  • the machine comprises second means 22 for ensuring a relative pivoting movement of the axis 9 of the film reel 8 and means 10 for supporting the load around the second pivot axis 20.
  • the machine also comprises control means acting on the first and second means for ensuring the two relative pivoting movements in order to coordinate their operation so as to allow the steps of the method described above.
  • the machine also comprises third means for ensuring a relative movement of sliding of the axis 9 of the film reel 8 and means 10 for supporting the load in one direction general parallel to the first axis 12.
  • These third means comprise the sliding member 15.
  • the control means also act on these third sliding means to coordinate their operation with that of the first and second relative pivoting means.
  • the machine further comprises means 19 for gripping an initial free end portion 18 of film strip 7; means for securing an end end portion of this strip of film on film already deposited on the load or on the load itself as well as means for cross-cutting the film strip. These different means can be carried by the same clamp 19.
  • the second means 22 ensure the relative locking of the axis 9 in at least two operating positions angularly separated from each other by about a quarter or up to three quarters of a turn.
  • a carriage 16 in two parts the part 16a acts as a carriage proper while the part 16b acts as a film reel holder.
  • the two parts 16a, 16b are associated with one another by pivoting about the second pivot axis 20.
  • a pin 23 fixed to a side flange 24 of the spool holder 16b passes through and is pivoted by bearings 25 of the side flanges 26 of the carriage itself 16a.
  • On the part of the pin 23 located between the two cheeks 26 is wedged a pinion 27 on which meshes a pinion 28 driven by a connecting rod-crank movement 29 itself driven by a motor 30 fixed to the cheeks 26.
  • a pre-stretching device 17 of the motorized type by a motor 31 the latter is also fixed to the cheeks 26 and comes to drive via a toothed belt 32 or equivalent an axis 33 coaxial with the pin 23, projecting from the cheek 26 and going up to the film reel holder 16b at its end portion 34 opposite to the carriage 16a, the axis 33 supports toothed pulleys or equivalent or gears which via drive means 35 and a bevel gear 36 allows '' drive the pre-stretching device 17.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Replacement Of Web Rolls (AREA)
EP91401689A 1990-07-16 1991-06-21 Procédé et machine d'emballage de la face latérale et d'une face d'extrémité d'une charge Expired - Lifetime EP0467729B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009059 1990-07-16
FR9009059A FR2664565B1 (fr) 1990-07-16 1990-07-16 Procede et machine d'emballage de la face laterale et d'une face d'extremite d'une charge.

Publications (2)

Publication Number Publication Date
EP0467729A1 EP0467729A1 (fr) 1992-01-22
EP0467729B1 true EP0467729B1 (fr) 1995-01-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401689A Expired - Lifetime EP0467729B1 (fr) 1990-07-16 1991-06-21 Procédé et machine d'emballage de la face latérale et d'une face d'extrémité d'une charge

Country Status (6)

Country Link
US (2) US5447008A (es)
EP (1) EP0467729B1 (es)
CA (1) CA2047058C (es)
DE (1) DE69106801T2 (es)
ES (1) ES2069845T3 (es)
FR (1) FR2664565B1 (es)

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JPS5940683B2 (ja) * 1980-12-13 1984-10-02 シンワ化学工業株式会社 複合ストレツチ・フイルムによるパレツト・ストレツチ包装方法
FR2505775A1 (fr) * 1981-05-14 1982-11-19 Thimon Ets Procede de maintien de la cohesion d'une charge et charge resultant de la mise en oeuvre du procede
DE3375129D1 (en) * 1982-10-29 1988-02-11 Newtec Int Stretching device
FR2535297A1 (fr) * 1982-10-29 1984-05-04 Thimon Ets Dispositif d'obtention de vitesses differentielles tangentielles variables en divers points d'un film deformable
FR2572359B1 (fr) * 1984-10-25 1987-09-25 Newtec Int Procede et machine pour recouvrir les faces laterales d'une charge avec une bande de film en matiere plastique
FR2592630B1 (fr) * 1986-01-03 1988-04-01 Papiers Cie Gle Dispositif pour recouvrir un corps cylindrique d'une bande d'un materiau de protection
WO1988002723A1 (en) * 1986-10-13 1988-04-21 G.D. Engineering Pty. Limited Machine for stretch wrapping of large reels of paper and other materials
FR2617123B1 (fr) * 1987-06-26 1989-12-29 Newtec Int Bande avec renfort longitudinal, procede d'emballage et emballage comportant une telle bande, installation et machine pour la mise en oeuvre du procede d'emballage, et dispositif pour la realisation d'une telle bande
JPH0723146B2 (ja) * 1988-12-26 1995-03-15 ローレルバンクマシン株式会社 紙葉類における大束結束機
JP2810220B2 (ja) * 1990-07-06 1998-10-15 鐘紡株式会社 活性酸素消去剤

Also Published As

Publication number Publication date
US5447008A (en) 1995-09-05
ES2069845T3 (es) 1995-05-16
FR2664565B1 (fr) 1994-05-13
EP0467729A1 (fr) 1992-01-22
CA2047058C (en) 1997-09-30
FR2664565A1 (fr) 1992-01-17
US5450711A (en) 1995-09-19
CA2047058A1 (en) 1992-01-17
DE69106801T2 (de) 1995-09-07
DE69106801D1 (de) 1995-03-02

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