EP0912327A1 - Verfahren und vorrichtung zur herstellung von beutelpackungen und so erzeugter beutel - Google Patents

Verfahren und vorrichtung zur herstellung von beutelpackungen und so erzeugter beutel

Info

Publication number
EP0912327A1
EP0912327A1 EP98904223A EP98904223A EP0912327A1 EP 0912327 A1 EP0912327 A1 EP 0912327A1 EP 98904223 A EP98904223 A EP 98904223A EP 98904223 A EP98904223 A EP 98904223A EP 0912327 A1 EP0912327 A1 EP 0912327A1
Authority
EP
European Patent Office
Prior art keywords
film
transverse
notches
bag
rectilinear
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
EP98904223A
Other languages
English (en)
French (fr)
Other versions
EP0912327B1 (de
Inventor
Henri Georges Bois
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.)
Flexico France SARL
Original Assignee
Flexico France SARL
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 Flexico France SARL filed Critical Flexico France SARL
Publication of EP0912327A1 publication Critical patent/EP0912327A1/de
Application granted granted Critical
Publication of EP0912327B1 publication Critical patent/EP0912327B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement
    • B31B70/266—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement involving gusset-forming
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/36—Folding sheets, blanks or webs by continuously feeding them to stationary members, e.g. plates, ploughs or cores
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements

Definitions

  • the present invention relates to the field of packaging bags. Many packaging bags and many systems for the manufacture of these have already been proposed.
  • the known means are generally satisfactory.
  • the bags are most often formed from two flat sheets welded together on three sides and provided with closing means, for example complementary male / female profiles at the mouth of the bags.
  • FIG. 1 Illustrated in FIG. 1 appended, in a schematic manner, a known technique for producing bags with lateral bellows by introduction of bellows 10 precut between two sheets 12 and 14 constituting the two main faces of the bags, at 90 ° from the direction of travel S of these leaves.
  • Said sheets 12, 14 are provided with longitudinal male / female closure sections 13, 15.
  • the bellows Preferably the bellows
  • Document FR-A-2 686 063 describes another technique for manufacturing bellows packaging bags which consists in preforming a bag with side gussets, split the bag over part of its length along the outer fold lines of the bellows, fold down on the outside of the bag, flaps thus delimited, deposit closure profiles on these flaps, reform the bag and weld the closing profiles on said flaps put in place This technique is not however entirely satisfactory, given its complexity
  • a method of manufacturing packaging bags characterized in that it comprises the steps consisting in - forming a notch respectively in each of the two zones forming lateral bellows of a sheet of packaging bag so that the bag has only two thicknesses superimposed at the mouth of said bellows, at least over part of its width, and
  • the present invention also relates to a device for implementing this method, as well as the sachets obtained.
  • FIG. 1 previously described schematically represents a conventional technique for manufacturing packaging bags with side gussets
  • FIG. 2 represents a first step of a process according to the present invention consisting in making two Z-folds on a film
  • FIG. 3 represents a cross-sectional view of the same film
  • FIG. 4 represents a view similar to FIG. 2 and illustrates the portion of film removed to form notches
  • FIG. 5 represents a flat view of the same film provided with notches
  • FIG. 5a represents a similar flat view of a variant of film according to the present invention provided with notches
  • FIG. 2 shows a film 100 provided with two Z-folds, 110, 120, parallel to the longitudinal direction D of the film 100.
  • the two Z-folds 110 and 120 can be formed by any suitable means.
  • they are each formed by two blades 200 and 202, respectively 200 and 204, partially overlapping in overlap as illustrated in FIG. 3 to form a baffle in which the film 100 is engaged.
  • the folds 110 and 120 are intended to form the side bellows of the bag once it is finished.
  • the film illustrated in FIG. 2 has a flat main face 130, intended to form a main face of the bag after its completion.
  • This main face 130 is extended on either side, on its longitudinal edges, by first longitudinal flaps 112 and 122 themselves extended by second longitudinal flaps 114 and 124.
  • the flaps 112 and 114 form the fold 110.
  • the flaps 122 and 124 form the fold '120.
  • the flaps 112 and 122 are connected to the main face 130 by fold lines 111 and 121.
  • the flaps 112 and 122 are folded towards the middle of the face 130 from the lines of folding 111 and 121 so that they are underlying the main face 130.
  • the flaps 114 and 124 are connected to the flaps 112 and 122 by fold lines 113 and 123.
  • the flaps 114 and 124 extend towards the exterior from the fold lines 113 and 123.
  • the flaps 114 and 124 also have widths identical to the flaps 1 12 and 122 so that they are respectively underlying and superimposed thereon.
  • each of the flaps 114 and 124 is extended outwards by sections auxiliaries 140 and 142.
  • These auxiliary sections 140 and 142 are intended to form in combination the second main face of the sachets.
  • the two sections 140 and 142 Preferably as shown in FIG. 2, the two sections 140 and 142 have identical widths. However, this condition is not imperative.
  • the main thing is that the sections 140 and 142 have a cumulative width slightly greater than the face 130 to form the second face of the bag after having been connected by their free external longitudinal edge, as will be seen below with reference to the figure. 8.
  • the flaps 114 and 124 are substantially coplanar with the sections 140 and 142.
  • the flaps 114 and 124 are connected to the sections 140 and 142 by lines 115 and 125
  • the bag-forming method comprises a step of cutting at regular intervals two notches 150, 160 in each of the zones intended to form the side bellows
  • the notches 150 and 160 can be formed in the film 100 before the pleats 110 and 120 are produced. In this case, they initially have the geometry illustrated in FIG. 5.
  • the notches 150 and 160 are formed after completion of the folds 110 and 120.
  • the notches 150 and 160 can be made in the film 100 by any suitable means.
  • the notches 150 and 160 are produced using the blade 200 as an anvil for the cutting punch, in order to preserve the face 130 of the film.
  • the configuration of the notches 150 and 160 can be the subject of various variants Preferably the notches 150 and 160 extend between the lines
  • 150 and 160 can be formed back from the lines 111 and 115, 121 and 125 above, as illustrated in Figure 5b ⁇ s
  • each notch 150 and 160 is delimited by two longitudinal edges 152, 154 and 162, 164 and two transverse edges 156, 158 and 166, 168
  • the longitudinal edges 152, 154 and 162, 164 are rectilinear and coincide respectively with the lines 11 1, 115, 121 and 125 according to FIG. 5, which themselves correspond to the final external generators of the side bellows
  • the two edges 152 and 154, 162 and 164 respectively are superimposed
  • the transverse edge 156, 166 closest to the mouth of the bags is preferably straight and transverse to the longitudinal direction D of the film 100
  • the second transverse edge 158, 168 closest to the bottom of the sachets is preferably non-rectilinear, concave towards the mouth of the sachets. More precisely still, this second transverse edge 158, 168 is preferably formed by a dihedron composed of two sections. rectilinear 158a and 158b, 168a and 168b The two aforementioned sections 158a and 158b, 168a and 168b respectively constituting one of the second transverse edges 158 and 168 are preferably of identical length They extend respectively on one of the flaps 112 and 114, 122 and 124 Thus the sections 158a and 158b, 168a and 168b intersect on the center fold line 113, 123
  • the inclination of the sections 158a and 158b, 168a and 168b with respect to a line transverse to the longitudinal direction D is of the order of 15 °, so that the angle of the dihedron formed by the sections 158a and 158b, 168a and 168b is around 150 °
  • the generally flat film 100, provided with the two Z folds 110, 120 and equipped with the two notches 150 160 as shown in FIGS. 5 and 5b ⁇ s is preferably directed to a conventional "filling, filling and closing" machine for the production of sachets
  • complementary closure profiles 170 male / female are deposited on the film 100 at the mouth of a bag, transverse to the longitudinal direction D, before the film 100 is not routed on the forming neck of the FFS machine as illustrated in FIG. 7
  • closure sections 170 are placed against the main face 130, opposite the notches 150 and 160, that is to say between the transverse edges 156 and 158, respectively 166 and 168
  • the length of the closure sections 170 is preferably equal to the width of the main face 130, i.e. the distance separating the fold lines 111 and 121
  • the profiles 170 are immobilized in position on the film 100 by any appropriate means.
  • the profiles 170 are only initially fixed by their ends on the film 100 by means of a weld by points
  • the fixing of the profiles 170 over their entire length on the internal face of the faces principal of the bag is ensured subsequently, preferably during the production of transverse welds which will be described below with reference to FIG. 9
  • the fixing of the sections 170 by spot welding at their ends can moreover be accompanied of a spot weld of the lateral edges of the sachet, facing the folds 110, 120, at the level of the future transverse weld zones illustrated in FIG. 9, to fix the aforementioned folds and avoid their deformation during the subsequent routing from the film 100
  • the aforementioned spot welding means are preferably adjustable over the length of the film 100 in order to allow them to be precisely adjusted with respect to the zones corresponding subsequently to the transverse welds and to the length of the sachets sought.
  • closure profiles 170 at their ends and, where appropriate, the point fixing of the folds 110 and 120 makes it possible to facilitate the subsequent routing of the film 100 and also makes it possible to facilitate the subsequent production of the welds illustrated in FIG. 9, in particular thanks to the crushing resulting from the ends of the profiles 170
  • the pre spot welding means cited may be broadly consistent with the means described in document FR-A-2 638 419
  • the fixing of the closure profiles 170 and the temporary fixing by points of the folds 110 and 120 can be carried out not by thermal welding, but by any equivalent means, such as for example by static discharge or partial bonding.
  • the means designed to deposit the closure profiles 170 on the film 100 transversely to the longitudinal direction D of the film 100 can be the subject of numerous embodiments.
  • these means may comply with the means described in documents US-A-4617683, US-A- 4655862, US-A-4666536, US-A-4701361, US-A-4709398, US -A-4878987, US-A-4844759, US-A-4929225, US-A-4 909017 and US-A-5111643
  • the entire film 100 illustrated in FIG. 7 is directed towards the forming neck of an FFS machine, as indicated above.
  • the film 100 is conformed to the tubular state as illustrated in FIG. 8
  • the external free edges 141 and 143 of the sections 140 and 142 are then joined and welded in a conventional manner per se, using the means of the aforementioned longitudinal welding of the FFS machine
  • the tubular film is then filled with its content thanks to the filling chute provided for this purpose.
  • transverse weld 180 coincides with the transverse edge 156, 166 of the notches
  • This transverse weld 180 is intended to form the bottom of a sachet It ensures the connection of four thicknesses of film at the level of the lateral bellows (the two faces and the side bellows) and two thicknesses of film between these bellows (corresponding to the main faces)
  • the other transverse weld 182 is produced between the transverse edges 156 and 158, respectively 166 and 168 of the notches. This transverse weld 182 is intended to form the mouth of a bag.
  • a transverse rectilinear cutting line 181 can be made between them to separate two adjacent bags.
  • the welds 184 and 186 are each formed by two sections.
  • welds 184, 182 and 186 which intersect make it possible to ensure a perfect seal on the mouth of the bags. More precisely, the sections 184a and 186a ensure the connection of the outer edges of the two main faces of the bag while the sections
  • the method according to the present invention has the fundamental advantage of limiting the welds 184, 182 and 186 to two thicknesses of film, in particular at the place of fixing of the closure sections 170, while the most conventional methods must perform the welds on four film thicknesses at the side bellows
  • the present invention is not limited to the embodiment which has just been described, but extends to all variants conforming to its mind
  • sachets can be produced using a film of the type illustrated in FIG. 7 comprising notches 150, 160 and closure profiles 170, without directing this film on a forming, filling and closing machine as indicated previously
  • the film is then conformed to the tubular state by any suitable conventional means
  • the film 100 can be the subject of numerous variants. It is preferably a thermoplastic film.
  • the invention can extend to any flexible film capable of constituting a packaging sachet.
  • the welds 184a and 186a are produced on two thicknesses of film, on the other hand when the longitudinal edges 152, 154, 162, 164 of the notches 150 and 160 are formed back from the fold lines 111, 115, 121, 125, the welds 184a, 186a are produced at least in part in four superimposed thicknesses of film. It is the same for an end portion of the transverse welds 180, 182.
  • the welds 184a, 186a can moreover be produced at least partially behind the fold lines 111, 115, 121, 125 as illustrated in the figure. 9.
  • the variant embodiment of the notches illustrated in FIG. 5a makes it possible to improve the lateral tightness of the bags.
EP98904223A 1997-01-29 1998-01-27 Verfahren und vorrichtung zur herstellung von beutelpackungen und so erzeugter beutel Expired - Lifetime EP0912327B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9700936A FR2758761B1 (fr) 1997-01-29 1997-01-29 Procede et dispositif de fabrication de sachets d'emballage et sachets obtenus
FR9700936 1997-01-29
PCT/FR1998/000138 WO1998032593A1 (fr) 1997-01-29 1998-01-27 Procede et dispositif de fabrication de sachets d'emballage et sachets obtenus

Publications (2)

Publication Number Publication Date
EP0912327A1 true EP0912327A1 (de) 1999-05-06
EP0912327B1 EP0912327B1 (de) 2004-03-31

Family

ID=9503075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98904223A Expired - Lifetime EP0912327B1 (de) 1997-01-29 1998-01-27 Verfahren und vorrichtung zur herstellung von beutelpackungen und so erzeugter beutel

Country Status (13)

Country Link
US (3) US6261000B1 (de)
EP (1) EP0912327B1 (de)
JP (1) JP4473347B2 (de)
AT (1) ATE263021T1 (de)
AU (1) AU725034B2 (de)
BR (1) BR9805961A (de)
CA (1) CA2250365C (de)
DE (1) DE69822755T2 (de)
DK (1) DK0912327T3 (de)
ES (1) ES2215290T3 (de)
FR (1) FR2758761B1 (de)
NZ (1) NZ332093A (de)
WO (1) WO1998032593A1 (de)

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US7163133B2 (en) 2004-03-05 2007-01-16 S.C. Johnson Home Storage, Inc. Apparatus for and method of moving a slider along mating zipper elements
US7244222B2 (en) 2004-03-05 2007-07-17 S.C. Johnson Home Storage, Inc. Apparatus for and method of positioning a slider on mating zipper elements

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US8938860B2 (en) * 2009-10-08 2015-01-27 Illinois Tool Works Inc. Seal apertures through package reclosure
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US7163133B2 (en) 2004-03-05 2007-01-16 S.C. Johnson Home Storage, Inc. Apparatus for and method of moving a slider along mating zipper elements
US7244222B2 (en) 2004-03-05 2007-07-17 S.C. Johnson Home Storage, Inc. Apparatus for and method of positioning a slider on mating zipper elements

Also Published As

Publication number Publication date
BR9805961A (pt) 1999-08-31
CA2250365A1 (fr) 1998-07-30
FR2758761A1 (fr) 1998-07-31
US20010023569A1 (en) 2001-09-27
DK0912327T3 (da) 2004-08-02
CA2250365C (fr) 2007-04-17
ATE263021T1 (de) 2004-04-15
AU725034B2 (en) 2000-10-05
US6343455B2 (en) 2002-02-05
NZ332093A (en) 1999-04-29
DE69822755T2 (de) 2005-01-05
US20010023571A1 (en) 2001-09-27
FR2758761B1 (fr) 1999-04-16
JP4473347B2 (ja) 2010-06-02
DE69822755D1 (de) 2004-05-06
US6339911B2 (en) 2002-01-22
ES2215290T3 (es) 2004-10-01
EP0912327B1 (de) 2004-03-31
US6261000B1 (en) 2001-07-17
AU6218698A (en) 1998-08-18
JP2000508595A (ja) 2000-07-11
WO1998032593A1 (fr) 1998-07-30

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