EP0105238B1 - Grand sac pour matières en vrac - Google Patents

Grand sac pour matières en vrac Download PDF

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Publication number
EP0105238B1
EP0105238B1 EP83109076A EP83109076A EP0105238B1 EP 0105238 B1 EP0105238 B1 EP 0105238B1 EP 83109076 A EP83109076 A EP 83109076A EP 83109076 A EP83109076 A EP 83109076A EP 0105238 B1 EP0105238 B1 EP 0105238B1
Authority
EP
European Patent Office
Prior art keywords
bag
panels
blank
spout
flat
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
Application number
EP83109076A
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German (de)
English (en)
Other versions
EP0105238A3 (en
EP0105238A2 (fr
Inventor
Arthur E. Lafleur
Arnie Lafleur
Lee Lafleur
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.)
Scholle Custom Packaging Inc
Original Assignee
Custom Packaging Systems Inc
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
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Application filed by Custom Packaging Systems Inc filed Critical Custom Packaging Systems Inc
Publication of EP0105238A2 publication Critical patent/EP0105238A2/fr
Publication of EP0105238A3 publication Critical patent/EP0105238A3/en
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Publication of EP0105238B1 publication Critical patent/EP0105238B1/fr
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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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1618—Flexible intermediate bulk containers [FIBC] double-walled or with linings
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags

Definitions

  • This invention relates to a collapsible bag which, when collapsed, comprises a flat tubular blank of a flexible material and having a pair of flat overlying panels adapted to form a pair of opposite side walls of the bag and a pair of folded gusset panels extending inwardly between the flat panels from the opposite side edges of the panels and adapted to form two other opposite side walls of the bag, said blank having adjacent one end thereof each flat panel and the adjacent gusset panel connected together along lines extending diagonally inwardly from the opposite side edges of the panels toward said one end of the tubular blank.
  • a collapsible bag of this type has become known from US-A-3119548.
  • a fabric bag used in the above manner has to fulfil several practical requirements. It is of primary importance that the construction of the bag be such as to sustain relatively heavy loads. At the same time, it is essential that the bag is adapted to be folded or collapsed to a compact flat form. Frequently, because of the nature and quantity of material shipped in such bags, the bags should also be designed so that they can be easily filled and emptied of their contents. It is also desirable that such bags be designed so that, when filled, they are free standing and capable of being stacked vertically upon another. Such bags should preferably have some sort of attachment thereon which enable them to be lifted by the tines of a forklift truck. Furthermore, depending upon the type of material being shipped, some bags are also required to be moisture-proof or water-resistant.
  • the primary object of this invention resides in the provision of a fabric bag which is economical to manufacture and which, when filled, automatically assumes a cubical shape and in particular has rectangularly shaped top and bottom walls of high strength and an easily closable filling spout at the top wall.
  • a collapsible bag which includes the features as defined above is characterized by said diagonal lines of connection terminating at their laterally inner ends in spaced apart relationship laterally outwardly of the inner folded edges of the gusset panels at points spaced from said one end of the blank, each flat panel and the adjacent gusset panel also being connected together along a line extending lengthwise of the blank from said points of termination of the diagonal lines to said one end of the blank, each flat panel and the adjacent gusset panel being severed along lines spaced laterally outwardly of and generally co-extensive in length with said lengthwise extending lines of connection to form, when the blank is opened, a spout of rectangular cross-section at said one end of the blank, each corner of the spout being defined by one of said lengthwise extending connection lines, the portions of the flat and gusset panels lying between said diagonal connection lines forming, when the blank is open, a generally flat rectangular end wall of the bag with said spout at generally the center thereof, said
  • the bag according to the present invention can be easily folded into a flat compact form which, when filled, automatically assumes the desired cubical shape. Further embodiments of the bag allow it to be engaged with one or both tines of a fork lift truck by the operator of the truck without further assistance.
  • the bag can be provided with a top wall that is so designed as to impart high strength to the bag by a top panel construction which also provides a lift member generally engageable with one or both tines of a fork lift truck.
  • the bag of the present invention is formed from a tubular blank 10 of a woven fabric, such as burlap, canvas, polypropylene, etc.
  • the woven fabric is formed into a tube by sewing the opposite side edges of the fabric together as at 12.
  • the tubular blank comprises a pair of flat overlying panels 14,16 which are interconnected by inwardly folded gussets 18, 20.
  • the bag illustrated is generally square in cross section and, accordingly, each folded gusset 18 and 20 has a width which is approximately the same as the width of the flat panels 14, 16.
  • the fold lines 22 of gussets 18, 20 extend lengthwise of the blank closely adjacent the longitudinal center line thereof.
  • the four corner portions of the bag are stitched diagonally on opposite sides of the blank as at 24.
  • the stitch lines 24 extend symmetrically from the opposite side edges of the tubular blank inwardly and toward the adjacent end of the blank and terminate at the points 26 which are spaced apart on opposite sides of the longitudinal center line of the blank and which are also spaced inwardly from the opposite ends of the blank.
  • Additional lines of stitching 28 extend from the points 26 lengthwise of the blank in parallel relation to the opposite ends of the blank.
  • Panels 14, 16 and the intermediate portions of gusset panels 18, 20 are then slitted lengthwise from the opposite ends of the blank inwardly as at 30 along lines that are parallel to and spaced slightly laterally outwardly from the stitch lines 28.
  • the severing lines 30 terminate at points 32 which are generally transversely aligned with the intersection points 26 between stitch lines 29 and stitch lines 24.
  • the end portions of panels 14, 16 and gusset panels 18, 20 are folded over several times and stitched together as at 36.
  • the end portions of the flat panels 14, 16 and the gusset panels 18, 20 which extend between the severing lines 30 are also folded individually one or more times upon themselves and hemmed by stitching as at 38.
  • eyelets or similar fasteners 40 can be secured to the edges which are hemmed at 38 on the two flat panels 14, 16. It will be appreciated that all of the stitching and severing thus far described can be performed on the blank while it is in a flat condition with the gusset panels 18, 20 folded inwardly as shown in FIG. 3. This represents simple sewing and cutting operations that can be performed quickly and economically even though the blank itself may be over 1.8 m (six feet) long and 0.9 m (three feet) wide.
  • the portions of the panels 14, 16 and gusset panels 18, 20 which extend between stitch lines 28 form rectangularly- shaped spouts 42, the upper spout being illustrated in FIG. 1.
  • the spouts 42 are formed at both ends, as shown in FIG. 2.
  • the bottom of the blank may have the construction shown in FIG. 5.
  • the end portion of the blank will be folded over one or more times upon itself and then stitched along the line 44.
  • the four diagonal stitch lines 46 each of which extends through one of the flat panels 14, 16, and the adjacent portion of the gusset panels 18, 20 extend directly to the hemmed portion which is stitched at 44. Stitching 46 is performed before stitching 44.
  • the bag illustrated in the drawings is generally square in horizontal section. If it is desired to form a bag of rectangular cross section with two opposite sides wider than the other two opposite sides, then the fold lines 22 between the gusset panels 18, 20 would be located further laterally outwardly from the longitudinal center line of the blank than illustrated in FIG. 3. In any event, however, the lines of severing 30 would be located laterally outwardly of the fold lines 22 of the gusset panels 18, 20. In a rectangular bag the wider side walls would be formed by panels 14,16 and the narrower end walls of the bag would be formed by the gusset panels 18, 20.
  • valve closure panel 48 is designated 48 and is stitched solely to the inner face of the flat panel 14 as at 50.
  • Valve panel 48 is sized to overlie the opening formed by the spout 42 at the lower end of the bag when the bag is filled.
  • the bag in the flattened condition has eight double-thickness panel sections 52, two at each of the four corners, which lie laterally outwardly of stitch lines 24 and severing lines 30.
  • These double-thickness panel sections 52 which are stitched together as at 36, are generally triangularly shaped, except that one corner of the triangle terminates generally at the severing line 30.
  • the double-thickness panels designated therein as 54 are of truly triangular shape.
  • the double-thickness panels 52 at the upper end of the bag are each slitted, as at 56.
  • the function of the slits 56 is illustrated in FIG. 6.
  • the bag is to be filled with material, it is supported on retaining rods 58 of a suitable bag support which supports the bag vertically with its upper end in the expanded condition.
  • the bag is arranged on the rods as shown in FIG. 6 with the rods extending through the slits 56.
  • the upper end of the bag blank is spread apart as shown in FIG. 6, the upper end of the bag is automatically formed into a rectangular shape.
  • the four upper corners of the bag are defined by the intersection of the stitch lines 24 with the side edges of panels 14,16 and the spout 42 automatically assumes a generally rectangular shape.
  • the gusset panels 18, 20 automatically fold outwardly so that the portions of panels 14, 16 below the four upper corners of the bag form the side walls of the bag and the portions of the gusset panels 18, 20 below the four corners fold outwardly to form the end walls of the bag.
  • the top wall of the bag is formed by four panels of generally trapezoidal shape. Two of these panels are single-thickness portions of panels 14, 16 which lie between stitch lines 24. These top wall portions are designated 60.
  • the other two single-thickness panel portions which form the top wall of the bag comprise the portions of gusset panels 18, 20 which also lie between stitch lines 24 and are designated 62 (FIG. 6).
  • the double-thickness panels 52 overlie the single-thickness panels 62.
  • the spout 42 at the bottom end thereof is folded to a collapsed condition and secured by a lace or equivalent means through the eyelets.
  • the valve flap 48 may be utilized to overlie the closed bottom spout and thus effectively prevent leakage of material from the bag.
  • the top spout 42 is folded to a collapsed position and closed as by lacing it through the eyelets. The bag thus closed is illustrated in FIG. 8.
  • the closed and filled bag according to the present invention is of generally cubical shape. In view of its construction, it is free standing and adapted to be stacked vertically one upon another. In order to stack the bags vertically or to move them from one location to another it is necessary to lift the bags. Bags constructed in accordance with the present invention are adapted to be lifted in a very convenient manner.
  • a generally flat, plastic tube 64 (FIG. 9) is utilized.
  • Tube 64 is preferably extruded or otherwise formed from a material which is at least semi-rigid with some degree of elastic memory. In its normal condition tube 64 is of a flattened configuration with open ends and sized to receive the tine 66 of a fork-lift truck.
  • Tube 64 is inserted across the top of the bag between the single-thickness panels 62 and the double-thickness panels 52. It is directed between these panels so as to overlie the laced closed spout 42 shown in FIG. 8.
  • Tube 64 has a length preferably slightly greater than the dimension of the bag along the stitched hem 36.
  • snap fasteners 72 are provided for engagement with mating snap fasteners 74 on the double-thickness panels 52. Since the tube 64 in its normal condition is open at its ends and extends across the top of the bag at the center thereof, the operator of a forklift truck can easily guide tine 66 thereof into and through tube 64 without requiring the assistance of another person. He merely aligns the forklift tine 66 with one end of tube 64, raises the tine to engage it under the extension 68 of the tube and then directs the tine through the tube. Thereafter, he merely raises the tine to lift the filled bag.
  • tube 64 may have been completely collapsed by the weight of another filled bag on top of it, it will assume its open condition when it is relieved of such load.
  • the lifting force on the bag is transferred by the diagonal stitch lines 24 to both side walls of the bag and to both end walls of the bag.
  • the lift arrangement of the present invention is superior to the lift arrangement of other bags which have a lift loop sewn to each of the four upper corners thereof. In the latter case, the lifting force on the bag is concentrated at each of the four corners rather than being distributed through the periphery of the bag.
  • the bag of this invention can be made of a lighter weight fabric than bags where the lift load is applied only to the corners.
  • a conventional rectangularly shaped bag such as indicated at 80 in FIG. 12, can be adapted for lifting in the manner described by securing a top lift panel 82 over the top wall 84 of the bag and inserting a tube 86 (similar to the tube 64 shown in FIG. 9) between the lift panel 82 and the top wall 84 of the bag.
  • tube 86 may extend substantially across the fu width of the top of the bag if it is desired to utilize both tines 66 of the lift truck to raise the bag, or two narrow tubes may be utilized.
  • Lift panel 82 may be secured to the bag when it is initially formed, in which case it will be provided with a central opening 88 to enable filling the bag.
  • the bag is intended to be of the reusable type it is desirable, depending upon the environment in which the filled bags are used, to reinforce the bottom of the bags so as to prevent them from becoming worn and the stitching thereon to become loose.
  • a pair of flat wear resistant panels 88 preferably made of a thin plastic material, are secured in any suitable fashion to the portion of the bag blank which, when filled, forms the bottom of the bag. As illustrated in FIG. 14, these panels 88 each overlie one-half the bottom of the bag and extend lengthwise between the two side walls of the bag. In FIG. 14 they are shown secured to the bag by means of tapes 90. However, any other suitable fastening means may be employed.
  • the two panels 88 When the bag is emptied and collapsed to its flattened condition, such as shown in FIGS. 2 and 5, the two panels 88 would lie flat against the panels 14, 16 with the outer edges 91 generally transversely aligned with the outer ends of the stitch lines 24 or 46 at the lower end of the bag.
  • the bag liner can be formed from a tubular blank with inwardly folded gusset panels in the same manner in which the bag is formed.
  • the tube blank generally designated 92 in FIG. 18 comprises overlying flat panels 94, 96 having inwardly folded gusset panels 98, 100.
  • the width of blank 92 is preferably slightly less than that of the bag blank so that the liner will fit within the bag in a flattened condition with the gusset panels 98, 100 interleaved with the gusset panels 18,20 of the bag.
  • the liner is hermetically sealed in any suitable fashion along the diagonal lines 102 and along the lengthwise extending lines 104 which, when the liner is arranged within the bag, register with the stitch lines 24 and 26. If desired, the liner can be formed with the double-thickness panels 106 shown at one corner of the liner illustrated in FIG. 16. But, in most instances, since the weight or load of the materials is sustained by the bag itself, not the liner, from the standpoint of bag strength the double-thickness panels 106 are not essential on the liner.
  • the liner blank is preferably longer than the bag blank so that when the liner is inserted into the bag the spouts 108 of the liner will extend outwardly beyond the spouts 42 of the bag.
  • the liner can be formed with spouts 108 at the upper and lower ends thereof as shown in FIG. 15 or with a spout only at the upper end thereof as shown in FIG. 16.
  • the liner shown in FIG. 16 would be employed with a bag having a closed bottom of the type illustrated in FIG. 5.
  • the spout at the lower end of the bag can be formed as a tapered dispenser 110, such as shown in FIG. 2, the tip of which can be cut off to discharge the contents of the bag. If the contents of the bag are to be discharged in measured quantities, the spout at the lower end of the bag can be formed with a valve nozzle 112 as shown in FIG. 17.
  • FIG. 20 there is illustrated a tool for facilitating insertion of a flattened folded liner within a flattened bag.
  • the tool generally designated 116 is provided with a handle 118 having a length greater than that of the flattened bag.
  • handle 118 At its leading end handle 118 has secured thereto four fins or paddles 120.
  • These fins 120 are arranged on handle 118 in two pairs with the fins in each pair slightly inclined to one another as shown in FIG. 20.
  • the finned end of the tool has a width that enables it to be inserted into a spout 108 of a liner.
  • the free ends of fins 120 may be straight, but the edges adjacent handle 118 are preferably angularly inclined as at 122.
  • Tool 116 is designed to draw the liner through the bag from one end to the other. Before the tool is engaged with the liner the liner is folded into the general configuration illustrated in FIG. 19. More specifically, the two panels 94, 96 of the liner together with the gusset panels 98, 100 are individually folded several times in the manner shown in FIG. 19 so that the width of the folded liner is of a dimension that will enable the liner to be drawn through one of the spouts 42 of the bag when the bag is in the collapsed condition shown in FIG. 21.
  • the tool 116 is inserted into one end of the liner, the fins 120 being interleaved with the folded gusset panels 98, 100 at the liner spout. Triangular end portions of the liner spout are then folded over the inclined edges 122 of the fins 120 and secured temporarily in place as by adhesive tape strips, as shown at 124 in FIG. 21. This enables the tool to apply a pulling force to the liner.
  • Handle 118 is then directed lengthwise through the bag and pulled therethrough so that the taped end of the liner spout of fins 120 is drawn into the spout at one end of the bag and out through the spout at the other end of the bag.
  • a liner in the bag does not interfere in any manner with the use of a tubular member such as shown at 64 and 86 for lifting the filled bag.
  • the liner spout may be closed and collapsed and the bag spout can be closed over the liner spout so as to underlie the tubular member.
  • tubes 64 or 86 are not absolutely essential to engage tubes 64 or 86 with the top of the bag only after the bag is filled. If the tube is sufficiently flexible it can be applied to the bag when the bag is initially manufactured. Thereafter the user may simply fold the tube lengthwise one or more times and displace it sidewise to enable the bag spout 48, and the liner spout 108 if a liner is used, to be opened for filling the bag. After the bag is filled and the spouts closed, the tube can be unfolded so as to assume the condition shown in FIGS. 10 and 13 wherein it is adapted to be engaged with the tine of a forklift truck for lifting the filled bag.

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Claims (17)

1. Sac pliant qui, lorsqu'il est plié, forme un flan tubulaire plat (10) d'un matériau souple et ayant deux panneaux plats (14, 16) qui se recouvrent et qui sont destinés à former une paire de parois latérales opposées du sac et une paire de panneaux repliés à goussets (18, 20) disposés vers l'intérieur entre les panneaux plats (14,16) à partir des bords latéraux opposés des panneaux et destinés à former deux autres parois latérales opposées du sac, le flan (10) étant tel que, près d'une première extrémité, chaque panneau plat (14, 16) et le panneau adjacent à gousset (18, 20) soit raccordé le long de lignes (24) disposées en diagonale vers l'intérieur à partir des bords latéraux opposés des panneaux (14, 16) vers la première extrémité du flan tubulaire, et caractérisé en ce que les lignes diagonales de raccordement (24) aboutissent, à leurs extrémités latéralement internes (26) à distance des bords internes repliés (22) des panneaux à goussets (18, 20) latéralement à l'extrérieur de ces bords, à des emplacements espacés par rapport à la première extrémité du flan, chaque panneau plat (14,16) et le panneau adjacent à gousset (18, 20) étant aussi raccordés le long d'une ligne (28) disposée suivant la longueur du flan (10) à partir desdits points (26) de terminaison des lignes diagonales (24) jusqu'à la première extrémité du flan, chaque panneau plat (14, 16) et le panneau adjacent à gousset (18, 20) étant découpé suivant des lignes (30) espacées latéralement à l'extérieur des lignes longitudinales de raccordement (28) et ayant de façon générale la même longueur que ces lignes afin que, lorsque le flan est ouvert, il forme un bec (42) de section rectangulaire à la première extrémité du flan (10), chaque coin du bec (42) étant délimité par l'une des lignes longitudinales (28) de raccordement, les parties des panneaux plats (14, 16) et à goussets (18,20) placées entre les lignes diagonales (24) de raccordement formant, lorsque le flan est ouvert, une paroi du sac de forme rectangulaire et plate de façon générale, le bec (42) étant disposé de façon générale à son centre, les lignes diagonales de raccordement (24) partant des coins du bec et vers les coins de la paroi d'extrémité et, lorsque le flan tubulaire (10) est ouvert, les panneaux (14,16,18, 20) forment un sac de section générale rectangulaire, la paroi d'extrémité étant transversale de façon générale aux panneaux (14, 16, 18, 20) et ayant un bec (42) et, lorsque le flan tubulaire (10) est replié, il se replie sous forme d'un sac de forme générale plate et peu encombrante.
2. Sac selon la revendication 1, dans lequel le flan (10) est formé d'une matière plastique et les lignes de raccordement (24, 28) sont thermo- soudées.
3. Sac selon la revendication 1, dans lequel le flan (10) est formé d'une étoffe et les lignes de raccordement (24, 28) sont des lignes de couture.
4. Sac selon la revendication 1, dans lequel les parties (52) des panneaux plats (14, 16) et à goussets (18, 20) adjacentes à la première extrémité du flan tubulaire (10) et qui sont disposées latéralement à l'extrérieur des lignes de découpe (30) sont raccordées le long de lignes (38) qui sont perpendiculaires de façon générale aux bords latéraux opposés des panneaux plats (14, 16).
5. Sac selon la revendication 4, dans lequel les parties (52) des panneaux plats (14, 16) et à goussets (18, 20) disposées latéralement au-delà des lignes diagonales (24) de raccordement forment des parties (52) de panneaux à double épaisseur qui recouvrent les parties (62) des panneaux à goussets (18, 20) formant en partie la première extrémité du flan (10).
6. Sac selon la revendication 5, dans lequel le bec (42) est destiné à être replié par pliage dans le plan de la première paroi d'extrémité lorsque le sac est rempli d'un matériau, et comprenant des organes (40) de fixation destinés à la fermeture du bec (42).
7. Sac selon la revendication 5, comprenant un organe tubulaire (64) formé d'au moins un matériau semi-rigide, disposé sous les panneaux (52) à double épaisseur et sur le bec replié (42), l'organe tubulaire (64) ayant une extrémité ouverte placée près d'un bord libre externe des panneaux (52) à double épaisseur et ayant une dimension telle qu'il peut loger la dent (66) d'une fourche de charoit élévateur.
8. Sac selon la revendication 7, dans lequel l'extrémité ouverte de l'organe tubulaire (64) dépasse vers l'extérieur au-delà du bord externe des panneaux (52) à double épaisseur.
9. Sac selon la revendication 7, dans lequel l'extrémité ouverte de l'organe tubulaire (64) a une configuration aplatie et a des parties supérieure (68) et inférieure (70), la partie supérieure (68) dépassant vers l'extérieur au-delà de la partie inférieure (70).
10. Sac selon la revendication 1, dans lequel, à l'extrémité opposée du flan, les panneaux (14,16, 18,20) sont raccordés et découpés pratiquement à la même configuration que la première extrémité si bien que les deux extrémités du sac ont pratiquement la même construction.
11. Sac selon la revendication 3, comprenant un revêtement destiné au sac et comprenant un flan tubulaire plat (92) ayant des panneaux plats (94, 96) et des panneaux à goussets (98, 100) repliés vers l'intérieur, les panneaux se recouvrant et ayant la même configuration que les panneaux correspondants du sac, chaque extrémité du revêtement étant telle que les panneaux plats (94, 96) et à gousset (98, 100) sont raccordés suivant des lignes correspondant aux lignes diagonales (24) et longitudinales (28) de couture du sac et sont découpés le long de lignes correspondant aux lignes de découpe (32) du sac si bien que le revêtement aplati peut être tiré dans le sac aplati d'une manière telle que les goussets (18, 20, 98, 100) et les becs (42, 104) du sac et du revêtement sont imbriqués et emboîtés.
12. Sac selon la revendication 11, dans lequel le sac est réalisé avec une ouverture (42) à son extrémité opposée, et le revêtement est réalisé avec un bec (102) à son extrémité opposée, le bec étant destiné à passer par l'ouverture (42) du sac.
13. Sac selon la revendication 5, dans lequel les panneaux (52) à double épaisseur ont chacun une paire de fentes (56) adjacentes à chacun des quatre coins du sac, les fentes (56) étant orientées de manière qu'elles permettent le passage de barres (58) d'écartement destinées à supporter verticalement le sac et maintenant la première extrémité à l'état déployé afin que le sac puisse être rempli par le bec (42).
14. Sac selon la revendication 1, comprenant un panneau (48) fixé à l'intérieur du sac en position de recouvrement du bec (42) lorsque le sac est rempli, le dernier panneau précité (48) étant destiné à être décalé de la position de recouvrement afin qu'il permette l'évacuation du produit par le bec (42) lorsque le sac est orienté d'une manièretelle que le bec (42) se trouve au fond.
15. Sac selon la revendication 1, comprenant un organe (52, 82) de levage formé d'un matériau souple, raccordé au flan (10, 80) et, lorsque le flan (10, 80) est ouvert, recouvrant au moins en partie la première extrémité du sac sans être raccordé à elle de manière qu'un tunnel soit formé entre eux avec au moins une extrémité ouverte, et un organe tubulaire (64, 86) formé d'au moins un matériau semi-rigide disposé longitudinalement dans le tunnel, l'organe tubulaire (64, 86) ayant une extrémité ouverte adjacente à l'extrémité ouverte du tunnel et ayant une dimension permettant l'introduction de la dent d'une fourche de chariot élévateur.
16. Sac selon la revendication 15, dans lequel l'organe de levage (52, 82) est un panneau d'étoffe.
17. Sac selon la revendication 15, dans lequel l'extrémité ouverte de l'organe tubulaire (64,86) a une configuration aplatie et a des parties inférieure (70) et supérieure (68), la partie supérieure au moins (68) dépassant vers l'extérieur au-delà de l'extrémité ouverte du tunnel.
EP83109076A 1982-09-30 1983-09-14 Grand sac pour matières en vrac Expired EP0105238B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43080982A 1982-09-30 1982-09-30
US430809 1982-09-30

Publications (3)

Publication Number Publication Date
EP0105238A2 EP0105238A2 (fr) 1984-04-11
EP0105238A3 EP0105238A3 (en) 1985-10-30
EP0105238B1 true EP0105238B1 (fr) 1988-04-20

Family

ID=23709129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109076A Expired EP0105238B1 (fr) 1982-09-30 1983-09-14 Grand sac pour matières en vrac

Country Status (10)

Country Link
EP (1) EP0105238B1 (fr)
JP (1) JPS5974084A (fr)
KR (1) KR840006165A (fr)
AU (1) AU555027B2 (fr)
BR (1) BR8305250A (fr)
CA (1) CA1213532A (fr)
DE (1) DE3376313D1 (fr)
MX (1) MX156231A (fr)
NZ (1) NZ205363A (fr)
ZA (1) ZA836303B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO153250C (no) * 1983-11-09 1986-02-12 Norsk Hydro As Storsekk, omfattende en ytterbeholder og en innerbeholder med innslag, samt fremgangsmaate og anordning for dens fremstilling
US4946291A (en) * 1987-01-02 1990-08-07 Schnaars Daniel R Semi-bulk with liner
NL8701607A (nl) * 1987-07-08 1989-02-01 Zaan Cacaofab Bv Dubbelwandige zak van hoog draagvermogen.
US4903859B1 (en) * 1988-09-23 2000-04-18 Better Agricultural Goals Inc Container for flowable materials
GB8825375D0 (en) * 1988-10-29 1988-11-30 Holmesworth International Ltd Improvements in/relating to containers
NZ230818A (en) * 1989-09-28 1993-03-26 Transpak Ind Ltd Bag with sleeve: inner surface of sleeve has higher melting point than outer surface
IE76456B1 (en) * 1990-09-11 1997-10-22 Christopher C Cuddy Bulk containers
CA2051577A1 (fr) * 1990-10-31 1992-05-01 Norwin C. Derby Articles extrudes creux a diametre variable et methode de fabrication
US5230689A (en) * 1991-08-16 1993-07-27 B.A.G. Corporation Method of making stabilized flexible container for flowable materials
US5158369A (en) * 1991-08-16 1992-10-27 B.A.G. Corporation Stabilized flexible container for flowable materials
NL9300978A (nl) * 1993-06-07 1995-01-02 Leer Koninklijke Emballage Werkwijze voor het vervaardigen van een blokvormige houder.
JP3077966B2 (ja) * 1996-07-01 2000-08-21 東洋ハイテック株式会社 フレキシブルコンテナ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119548A (en) * 1961-06-08 1964-01-28 Dale Products Plastics Ltd Plastic bags
DE1816627A1 (de) * 1968-12-23 1970-06-25 Span Set Ges Fuer Transportsys Grossraum-Transportbehaelter fuer fluessiges oder fliessfaehiges Gut
US4312392A (en) * 1980-03-19 1982-01-26 Toyama Industry Co., Ltd. Bag and process for manufacturing the same
GB2098581A (en) * 1981-05-12 1982-11-24 Nattrass Frank Improvements relating to bulk containers

Also Published As

Publication number Publication date
EP0105238A3 (en) 1985-10-30
CA1213532A (fr) 1986-11-04
AU555027B2 (en) 1986-09-11
NZ205363A (en) 1987-04-30
ZA836303B (en) 1984-10-31
KR840006165A (ko) 1984-11-22
JPH0455950B2 (fr) 1992-09-04
DE3376313D1 (en) 1988-05-26
EP0105238A2 (fr) 1984-04-11
BR8305250A (pt) 1984-05-02
AU1895183A (en) 1984-04-05
JPS5974084A (ja) 1984-04-26
MX156231A (es) 1988-07-26

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