EP0083505A1 - Zusammenlegbare Behälter mit vorgefertigter Hebeöse und Verfahren hierzu - Google Patents

Zusammenlegbare Behälter mit vorgefertigter Hebeöse und Verfahren hierzu Download PDF

Info

Publication number
EP0083505A1
EP0083505A1 EP82306997A EP82306997A EP0083505A1 EP 0083505 A1 EP0083505 A1 EP 0083505A1 EP 82306997 A EP82306997 A EP 82306997A EP 82306997 A EP82306997 A EP 82306997A EP 0083505 A1 EP0083505 A1 EP 0083505A1
Authority
EP
European Patent Office
Prior art keywords
receptacle
length
lift
fabric material
secured
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.)
Ceased
Application number
EP82306997A
Other languages
English (en)
French (fr)
Inventor
Norwin Cedric Derby
Robert Ray Williamson
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.)
Super Sack Manufacturing Corp
Original Assignee
Super Sack Manufacturing Corp
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 Super Sack Manufacturing Corp filed Critical Super Sack Manufacturing Corp
Publication of EP0083505A1 publication Critical patent/EP0083505A1/de
Ceased legal-status Critical Current

Links

Images

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]
    • B65D88/165—Flexible intermediate bulk containers [FIBC] with electrically conductive properties
    • 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
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D1/00—Multiple-step processes for making flat articles ; Making flat articles
    • B31D1/06—Multiple-step processes for making flat articles ; Making flat articles the articles being handles
    • 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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1675—Lifting fittings
    • B65D88/1681—Flexible, e.g. loops, or reinforcements therefor
    • 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
    • B31B70/86—Forming integral handles or mounting separate handles
    • B31B70/864—Mounting separate handles on bags, sheets or webs

Definitions

  • This invention relates to a collapsible receptacle which is useful in handling flowable materials in semi-bulk quantities, and more particularly to such a receptacle wherein the lift loops are prefabricated for attachment to the upper end of the receptacle side wall.
  • Bulk handling equipment including railroad cars, barges, trucks and the like, is employed when large quantities of material are required. Such bulk handling equipment, however, is of limited versatility. Only large quantities of materials can be handled efficiently, and only at those locations accessible to such equipment. In addition, sanitary standards are more difficult to maintain with bulk handling equipment because the materials are often exposed during at least part of the handling.
  • Container systems have been developed for handling relatively smaller quantities of material.
  • the containers are individually filled, loaded for transportation to a point of distribution or use, unloaded, opened and emptied.
  • containers can be more convenient in some respects, higher handling costs are usually incurred because less mateial is carried per container.
  • the return freight costs of reusable containers can be substantial, particularly for rigid or noncollapsible containers.
  • the present invention comprises a material receptacle which overcomes the foregoing and other difficulties associated with the prior art.
  • the invention comprises a new and improved collapsible receptacle for handling materials in semi-bulk quantities.
  • the receptacle features top loading and bottom discharge.
  • the receptacle herein can be used with virtually any flowable material, including minerals, chemicals, fertilizers, foodstuffs, agricultural products and the like.
  • the receptacle of the present invention can be sized to handle from about six to eighty-four cubic feet of material, or up to about 3,000 pounds by weight.
  • the construction of the receptacle herein functions as an integral sling, whereby an external sling assembly is neither desirable nor necessary.
  • the invention lends itself to simplified construction, and is therefore less expensive than collapsible receptacles incorporating external sling assemblies.
  • the present invention comprises a collapsible receptacle with a built-in sling.
  • the receptacle is formed primarily of rectangular panels of flexible but substantially inextensible material. Woven polypropylene or woven polyethylene materials can be utilized in constructing the invention.
  • the receptacle herein includes a number of side panels, two of which are relatively longer than the other side panels. The side panelsrare arranged and secured together along the side edges thereof. The longer side panels are folded back and secured to themselves to form opposing lift loops or sleeves extending substantially the width of the receptacle. A bottom panel is secured between the bottom edges of the side panels, while a top panel with a fill spout therein is secured between the top edges of the side panels. If desired, a discharge spout can be mounted in the bottom panel.
  • reinforced material is utilized for the two side panels having the lift sleeves at the tops thereof.
  • the reinforced material comprises woven polypropylene or woven polyethylene with continuous longitudinal strands of polyester woven directly therein.
  • the reinforcing polyester strands can be provided in the material as selvage or bands.
  • a combination top/bottom panel assembly can be used in constructing the receptacle.
  • the assembly includes a panel with an opening positioned centrally therein.
  • the opening is preferably oblong or oval in shape and is at least as wide in the long direction as the maximum bridging distance of the material being handled.
  • a spout is positioned in the opening and secured to the panel.
  • the assembly can be used in this form as a top panel for the receptacle.
  • a closure assembly is secured to the panel about the spout.
  • the receptacle is formed from a single piece of material.
  • a receptacle blank is formed by making predetermined cutouts through a length of flattened circular or tubular material. The forward and trailing ends of the receptacle blank correspond so that blanks can be cut sequentially from an advancing supply of tubular material without waste. Openings for the fill and discharge spouts are cut into the receptacle blank as desired. The blank is then folded and secured to form a collapsible receptacle with an integral sling.
  • the receptacle is formed of at least one sheet of flexible material having two side edges and top and bottom edges with a generally rectangular shape.
  • the material is folded along first parallel folds proximate its center to define a first side panel between the top and bottom edges and first folds.
  • the material is further folded along second and third parallel folds on either side of the first folds to form second and third side panels on'either side of the first panel formed of opposed pairs of collapsible halves.
  • Structure is provided for fastening the side edges of the sheet of material between the third folds to form a fourth side panel opposed to the first panel, the sheet being collapsible to a flat form for storage and expandable to form a rectangular tube.
  • the collapsible receptacle further includes structure for securing together the panels along the first and third folds proximate the top edge along a line angled toward the top edge from the fold to form a closure at the top end having a generally rectangular shaped hole therethrough. Flaps are formed upstanding from the line of securement by facing portions of the secured sides.
  • a carrying strap may be secured between flaps on the material to permit the sheet of flexible material to be supported therefrom.
  • Reinforcing material may be secured to the carrying strap, flaps and along the adjacent fold to reinforce the receptacle.
  • a method for forming a collapsible receptacle for handling flowable material from a sheet of flexible material having side edges and a top and bottom edge.
  • the method includes the steps of folding the material along first parallel folds proximate the center of the sheet to form a first side panel between the first folds and top and bottom edges.
  • the method further includes the step of folding the material along second and third parallel folds on both sides of the first folds opposite the first panel to form second and third sides, each of the second and third sides formed of adjacent panel halves foldable into facing relation.
  • the method further includes the step of fastening the ends of the sheet togethe along the side edges to form a fourth side panel opposed to the first side panel, the sheet being foldable to a flattened form and expandable to a rectangular tube.
  • the method concludes with the step of fastening adjacent panels along the first and second folds along lines extending between the folds and top edges to form a top having a rectangular hole therethrough, the adjacent side panels forming flaps extending from the top for lifting the receptacle.
  • a prefabricated structure comprising lift loops for supporting the receptacle and its contents.
  • the prefabricated lift loop structure is then secured to the upper end of the side wall of the receptacle.
  • the receptacle may be provided with a bottom wall incorporating lift fork receiving members.
  • a receptacle 10 incorporating a first embodiment of the invention.
  • the receptacle 10 is of flexible, collapsible construction and is useful in handling semi-bulk quantities of material 12.
  • material 12 can comprise minerals, chemicals, fertilizers, foodstuffs, agricultural products or the like.
  • a forklift assembly 14 supports the receptacle 10 in FIGURE 1.
  • Forklift assembly 14 includes a mast 16 on a conventional forklift vehicle (not shown).
  • mast 16 supports a cross member 18 which is vertically moveable along the mast.
  • Other loading vehicles having different types of lift assemblies can also be utilized.
  • a fork attachment 20 is connected to the cross member 18.
  • Attachment 20 includes two vertical columns 22 and arms 24 extending outwardly from the upper ends of the columns 22.
  • a plate 28 is secured over crossbars 26. Portions of receptacle 10 are received over arms 24 for support by fork attachment 20.
  • receptacle 10 can be lifted and carried by a crane or the like using an attachment having arms similar to arms 24 in fork attachment 20.
  • Receptacle 10 is self-supporting, and no external sling assemblies or pallets are required to handle the receptacle.
  • Receptacle 10 comprises front and back side panels 30 and 32, and left and right side panels 34 and 36.
  • Side panels 30, 32, 34 and 36 are all generally rectangular.
  • side panels 34 and 36 are relatively longer than side panels 30 and 32.
  • the upper ends of side panels 34 and 36 are folded back and secured to themselves to form lift sleeves 38 and 40, respectively. Lift sleeves 38 and 40 thus extend the entire width of side panels 34 and 36, respectively.
  • lift sleeves 38 and 40 proceeds as follows.
  • Each lift sleeve 38 and 40 is formed similarly.
  • the top edge thereof is secured by stitching 42 extending across the panel.
  • a second line of stitching 44 is provided across panel 34 above stitching 42.
  • the top and side edges of panel 34 can be folded inward before provision of stitching 42 and 44 for extra reinforcement of these areas in receptacle 10. It has been found that the two lines of stitching 42 and 44 create a truss-like effect, which is more effective in distributing load between lift sleeve 38 and receptacle 10.
  • Lift sleeve 40 in side panel 36 is formed in similar fashion. It will thus be understood that lift sleeves 38 and 40 extending across the entire width of receptacle 10 are formed directly in an opposing pair of side panels.
  • the side panels 30, 32, 34 and 36 are joined at the side edges thereof to form an upstanding sidewall in receptacle 10.
  • the side edges of the panels are connected together by means sewn seams 46.
  • Seams such as plain seams wherein adjacent panels are joined by stitching along a line positioned inwardly from the free edges of the panels, can be used to interconnect each panel 30, 32, 34 and 36 to an adjacent panel.
  • Other suitable types of seams 46 can also be used, if desired.
  • the side panels 30, 32, 34 and 36 are thus interconnected by longitudinal seams 46 extending along the length thereof.
  • a top panel 48 is secured between the upper ends of side panels 30, 32, 34 and 36.
  • Panel 48 can be of rectangular or square configuration.
  • Panel 48 is secured about the periphery thereof to side panels 30, 32, 34 and 36 by means of stitching 50.
  • a fill spout 52 is mounted in an opening provided centrally in the top panel 48.
  • the spout 52 is generally cylindrical, and is secured by stitching 54 about the circumference of one end to panel 48.
  • a wire tie 56 or other suitable device can be employed to close fill spout 52. It will thus he apparent that flowable material 12 is introduced into receptacle 10 through fill spout 52.
  • a bottom panel 58 closes the lower end of receptacle 10.
  • Bottom panel 58 is secured about the periphery thereof by stitching 60 to the bottom edges of panels 30, 32, 34 and 36.
  • the bottom panel 58 includes a discharge spout assembly 62.
  • Discharge spout assembly 62 is substantially identical to the discharge spout assembly 70 illustrated and described in U.S. Patent No. 4,143,796, the disclosure of which is herein incorporated by reference.
  • FIGURE 1 illustrates discharge spout assembly 62 in the closed position
  • FIGURE 5 illustrates the assembly in the open and extended position.
  • discharge spout assembly 62 includes a spout 64 connected to an opening in bottom panel 58.
  • Spout 64 is closed with a wire tie 66.
  • spout 64 can be rolled up, covered with flap 68, and closed inside assembly 70 by draw cord 72.
  • Collapsible receptacle 10 can be constructed of any suitably strong material which is flexible but substantially inextensible. Natural or synthetic woven material can be employed. Jute, cotton, .polyethylene, or polypropylene are examples of such materials. It has been found that woven polypropylene material is advantageous because of its strength, durability and puncture resistance.
  • An impermeable liner 74 shown in FIGURE 1, can be provided inside receptacle 10, if desired. Liner 74 would be advantageous when handling footstuffs, fine powdered materials, or moist materials. Polybutylene film, for instance, can be used for liner 74.
  • FIGURES 6a, 6b, 6c and 6d are detailed illustrations of seams which can be employed in connecting adjacent panels in receptacle 10.
  • FIGURE 6a comprises a plain seam wherein single layers of panels A and B are connected by stitching C.
  • FIGURE 6b a double layer of panel A is secured to a single layer of panel B. Double layers of panels A and B are interconnected in FIGURES 6c and 6d.
  • Panels A and B in these detailed illustrations represent any pair of adjacent panels in receptacle 10. If desired the outside edges of panels A and B can be fused or adhesively secured together to minimize leakage.
  • FIGURE 7 partially illustrates a second embodiment of the invention.
  • Various components of collapsible receptacle 80 are substantially identical in construction and function to components of collapsible receptacle 10 shown in FIGURES 1-5. Such identical components are designated in FIGURE 7 with the same reference numerals, but are differentiated therefrom by means of a prime (') designation.
  • receptacle 80 does include a discharge spout assembly
  • receptacle 80 does not include a discharge spout assembly
  • receptacle 10 includes spout assembly 62.
  • Bottom panel 58' in receptacle 80 simply comprises a square or rectangular section of material. Discharge of flowable materials from receptacle 80 is accomplished by puncturing bottom panel 56'. Receptacle 80 is thus best suited for material handling applications wherein reuse of the receptacle is not contemplated. Though illustrated only partially, receptacle 80 is substantially identical to receptacle 10 in all other respects.
  • FIGURES 8-11 illustrate the steps involved in constructing the collapsible receptacle 90 shown in FIGURE 12.
  • Receptacle 90 comprises a third embodiment of the present invention.
  • Receptacle 90 is formed from two panels 92 and 94 each having the configuration of an elongate rectangle.
  • Panels 92 and 94 comprise suitable natural or synthetic material, such as woven polypropylene or woven polyethylene.
  • Panel 92 includes an opening 96 near one end thereof.
  • Panel 94 includes loops or sleeves 98 formed at the ends thereof.
  • Sleeves 98 in panel 94 are formed by folding back and securing the ends of the panel with stitching 100.
  • a second line of stitching 102 is provided between stitching 100 and the end of each sleeve 98.
  • panel 94 is laid over panel 92 and secured thereto with stitching 104.
  • the area where panels 92 and 94 cross over comprises the bottom of receptacle 90.
  • an opening 106 can be formed through panels 92 and 94 to receive a discharge spout assembly.
  • a discharge spout assembly similar to spout assembly 62 in receptacle 10 can then be mounted in bottom opening 106.
  • Panels 92 and 94 are folded inwardly and secured together along adjacent edges thereof by stitching 108, as is best shown in FIGURES 11 and 12.
  • a fill spout 110 is then sewn into opening 96 in the upper portion of panel 92.
  • This portion of panel 92 is then folded inwardly and secured about the periphery thereof by stitching 112 to the end panels 92 and 94.
  • the top of receptacle 90 is thus closed in this manner.
  • Any of the seam constructions illustrated in FIGURES 6a, 6b, 6c or 6d can be employed in constructing receptacle 90.
  • collapsible receptacle 90 includes a bottom of double-layered construction.
  • Receptacle 90 is comprised of two panels 92 and 94, each of which extends around the bottom of the receptacle for increased support.
  • Lift sleeves 98 are connected by a continuous length of material uninterrupted by stitched seams.
  • FIGURE 13 there is shown a collapsible'receptacle 120 incorporating a fourth embodiment of the invention.
  • Various components of the fourth inventive embodiment are substantially identical in construction and function to components of the first embodiment, receptacle 10 shown in FIGURES 1-5. These identical components are designated in FIGURE 13 with same reference numerals as utilized hereinbefore in connection with receptacle 10, but are distinguished therefrom by means of a double prime ('') designation.
  • each panel 34'' and 36" includes two longitudinal bands 122 extending the entire length thereof and positioned near each side edge thereof.
  • Panels 34'' and 36" are preferably formed of woven polypropylene or woven polyethylene material, while bands 122 are each formed of continuous strands woven straight into each panel.
  • each band 122 can be about one to two inches wide, and be comprised of about 50 strands of polyester.
  • Bands 122 can also be woven into panels 34" and 36" in the form of selvage. It has been found that bands 122 in receptacle 120 further enhance the integral sling construction of the receptacle.
  • collapsible receptacle 120 preferably includes bottom panel 124 having discharge spout assembly 126 mounted therein.
  • the bottom of receptacle 120 is constructed as follows.
  • Panel 124 is provided with a central opening 128.
  • a round or oblong configuration can be utilized for opening 128.
  • opening 128 is generally oval or oblong in configuration.
  • the longest dimension of opening 128 should be greater than the maximum bridging distance of the particular material 12 to avoid clogging of discharge spout assembly 126. It has been found that clogging or material bridging across an opening depends upon the width of the opening rather than area. An oval opening 128 is thus preferable because material bridging can be avoided with a relatively small opening which does not weaken panel 124 as much as a round or larger area opening.
  • a spout 130 is then secured in opening 128 by stitching 132. It will be appreciated that panel 124 with spout 130 could be utilized as the top panel 8" in receptacle 120.
  • a closure subassembly 134 which is shown in FIGURES 17 and 18, is then secured over spout 130 to panel 124.
  • Subassembly 134 includes another panel 136 which is relatively smaller than bottom panel 124.
  • a pair of crosscuts 138 and 140 are formed through panel 136.
  • Four flaps are thus formed by crosscuts 138 and 140.
  • These flaps are next folded back and secured to panel 136, such as by means of sewing, to form guide loops for draw rope 142 shown in FIGURES 13 and 14.
  • An optional cover flap 144 can then be sewn or otherwise secured to one side of panel 136 to complete construction of subassembly 134.
  • the subassembly 134 is then attached to bottom panel 124 with stitching 146 to complete construction of discharge spout assembly 126.
  • panel 124 and discharge spout assembly 126 comprises a significant feature of the invention.
  • This construction is not limited to receptacle 120, but can be employed in receptacle 10 or other receptacle constructions.
  • the construction of this bottom panel begins with a panel/spout subassembly, which can be utilized by itself as a top panel.
  • a bottom panel is formed simply by adding a closure subassembly 134 to panel 124. This facilitates the construction of both top and bottom panels.
  • subassembly 134 considerably reinforces panel 124 in the area surrounding spout 130 by eliminating high stress points at the corners of crosscuts 138 and 140.
  • FIGURES 19-22 illustrate the steps involved in constructing the collapsible receptacle 150 shown in FIGURE 23.
  • Receptacle 150 comprises a fifth embodiment of the invention herein.
  • the receptacle 150 is constructed from a single piece of material.
  • the method of constructing receptacle 150 can be adapted to automation and comprises a significant feature of this particular embodiment.
  • a predetermined receptacle blank is first cut from a length of circular or tubular material 152.
  • Suitable natural or synthetic material such as woven polypropylene or woven polyethylene, can be used for material 152.
  • Circular or tubular material 152 is in flattened condition and advanced from a supply thereof in the direction of arrow 154 into a cutting station.
  • material 152 can include four integral reinforcing bands 156, only two of which are shown.
  • Bands 156 are similar to bands 122 utilized in receptacle 120 described above. Each band 156, for example, comprises an area of one to two inch width with a plurality of continuous reinforcing strands extending in a longitudinal direction through material 152. Provision of bands 156 in material 152 enhances the integral sling construction of receptacle 150.
  • Receptacle blank 158 is cut from material 152 as follows.
  • One transverse cut 160 extends inwardly from one edge of material 152 and across about 3/4 of the width thereof.
  • Another transverse cut 162 is made inwardly from the opposite edge of material 152 offset from cut 160 and across the remaining 1/4 width of material 152.
  • the ends of cuts 160 and 162 are connected by a longitudinal cut 164.
  • Another longitudinal cut 166 intersects cut 160 at a point located at 1/4 of the width of material 152 from the opposite edge thereof. Cuts 160, 162, 164 and 166 all extend through both layers of the flattened circular or tubular material 152.
  • cut 166 remains in receptacle blank 158, while cuts 160-164 serve the purpose of severing the receptacle blank from material 152. Cuts 160, 162 and 164 define the upper end of the leading receptacle blank 158, and at the same time define the bottom end of the trailing receptacle .blank. There is thus little or no material waste in forming each receptacle blank 158, which is one of the significant advantages of the fifth inventive embodiment herein.
  • a generally semi-circular fill opening 168 is formed in the edge of receptacle blank 158 near cut 166.
  • a generally semi-circular discharge opening 170 is preferably formed in the opposite edge of receptacle blank 158 at the bottom end thereof. Provision or opening 170 is optional and is not necessary if it is desired to construct receptacle 150 without a discharge spout.
  • tubular receptacle blank 158 is then opened as shown in FIGURE 20. It will be observed that a pair of reinforcing bands 156 are provided in opposite panel portions 172 and 174 of the receptacle blank 158, while openings 168 and 170 are provided in the remaining pair of panel portions 176 and 178 thereof.
  • the upper ends of panel portions 172 and 174 are then folded back and secured to themselves with at least one line of stitching 180 to form lift loops or sleeves 182.
  • a fill spout 184 is then sewn into opening 168 of panel portion 176 in receptacle blank 158. Installation of fill spout 184 is similar to that of spout 52 shown in FIGURE 4.
  • the top end of panel portion 176 with fill spout 184 therein is folded inwardly and secured about the periphery thereof by stitching 186 to panel portions 172 and 174. Closure of the top end of receptacle 150 is thus completed with this step.
  • a conventional wire tie (not shown) can be used to close fill spout 184.
  • discharge spout assembly 188 is next sewn into opening 170 in the lower ends of panel portion 178.
  • discharge spout assembly 188 can comprise simply a spout 190 and wire tie 192 installed in a fashion similar to fill spout 184.
  • FIGURES 24 and 25 illustrate the preferred construction of discharge spout assembly 188 in the open and extended position.
  • a closure subassembly 134 which was previously described herein and shown in FIGURES 17 and 18, is secured to panel portion 178 around spout 190.
  • the addition of closure subassembly 134 reinforces the bottom of receptacle 150.
  • FIGURE 35 illustrates a collapsible receptacle 250 incorporating a sixth embodiment of the invention.
  • the receptacle 250 is formed of a flexible, collapsible construction and is also useful in handling semi-bulk quantities of material.
  • the receptacle 250 includes a sheet 252 of a flexible, yet unexpandable, material. Natural or synthetic woven material can be employed. Jute, cotton, polyethylene or polypropylene are examples of such materials. It has been found the woven polypropylene and polyethylene materials are advantageous because of their strength, durability and puncture resistance.
  • the sheet 252 is formed in a rectangular shape having side edges 254 and 256, a top edge 258 and a bottom edge 260.
  • the sheet 252 is folded along first fold lines 262 and 264 to define a first side panel 266 between the first folds,and top and bottom edges 258 and 260.
  • Second folds 268 and 270 and third folds 272 and 274 are made in sheet 252'on either side of the first folds from the first side panel 266.
  • the second and third folds define second and third side panels 276 and 278.
  • Each side panel is formed of a panel half 280 and 281.
  • the side edges 254 and 256 are overlapped a distance X and secured together to form a fourth side panel 282.
  • two glue lines are provided between the side edges.
  • the glue line 284 is a hot melt glue for immediate adhesion between the side edges 254 and 256.
  • the second glue line 286 is non-heated adhesive having a slower setting period than the glue in line 284 but having a greater final adhesion strength.
  • the glue line 284 permits a rapid bond to be formed between the side edges 254 and 256 during construction of the receptacle 250 and maintains the position of the side edges permitting the glue on line 286 to properly set.
  • FIGURE 27a illustrates a top view of the sheet 252 folded as herein described.
  • FIGURE 27b illustrates sheets 252 and 285 folded in an identical manner to form double layered side panels in the receptacle 250.
  • the folds for the panels 252 and 285 are preferably offset so that the glue line between the side edges of each sheet is offset. Therefore, local stresses caused by material within the receptacle will never act directly on more than one glue line in the receptacle.
  • FIGURE 27c illustrates the use of sheets 252, 285 and 287 interfolded to form a triple layered side panel in the receptacle 250. Again, the glue lines between the side edges of each sheet is preferably offset. If desired, one or more sheets 252, 285 or 287 can be of a material impervious to the material stored in receptacle 250.
  • the next step in the formation of the receptacle 250 is the fastening together of adjacent panels at the first and third folds. In the preferred construction, this is accomplished by corner sew lines 288.
  • the corner sew lines extend from the first and third folds upwardly and inwardly to the top edge 258 of the sheet 252.
  • the corner sew lines 288 define flaps 290, 292, 294 and 296.
  • the flaps are formed of a double thickness of the material of sheet 252.
  • the sheet 252 with sew lines 288 may still be retained in a flattened form for storage as illustrated in FIGURE 28.
  • a top opening 298 is formed.
  • the sheet 252 forms a square opening 298 as illustrated in FIGURES 31 and 33.
  • the next step in construction is the formation of a bottom to container 250.
  • folds 300 are made on opposed side panels 276 and 278 extending from the bottom edge 260 near the center of the panel upward to.intersect the second and thirds folds between the side panels.
  • This forms square bottom panels 302 and 304 as shown in FIGURE 32 formed from material from the adjacent side panels 266 and 282.
  • the bottom panels may then be folded to form a flat bottom 306.
  • the bottom 306 may be maintained by gluing the bottom panels to the folded material in the opposite side panels.
  • Another suitable bottom is formed by serving the side panels together along the bottom edge 260 by stitching 307 as seen in FIGURE 28. Stitching 307 secures panels 266, 282 and panel halves 280 and 282 in facing relation.
  • a separate bottom panel 308 may close the lower end of the container 250.
  • the panel 308 is substantially identical to panel 58 discussed hereinabove.
  • the bottom panel 308 is secured about the periphery of the bottom edge 260 by stitching 310 at the bottom edges of side panels 266, 276, 278 and 282.
  • a discharge spout assembly 312 may be positioned in the bottom panel 308.
  • the spout assembly 312 is substantially identical to discharge spout assembly 62 described hereinabove, which in turn is substantially identical to the discharge spout assembly 70 illustrated and described in U.S. Patent No. 4,143,796, the disclosure of which is herein incorporated by reference.
  • the spout assembly 312 includes a spout connected to an opening in the bottom panel 308.
  • the spout may be closed with a wire tie.
  • the spout can be rolled up, covered with a flap and closed inside flaps 320 by drawcord 322.
  • a fill spout 324 is mounted in the opening 298 as shown in FIGURE 35.
  • the spout 324 is generally cylindrical, and is secured by stitching 326 about the circumference of the opening 298.
  • a wire tie 328 or other suitable device can be employed to close the fill spout 324.
  • diagonal lifting straps 330 and 332 are provided to lift the receptacle 250.
  • the ends of diagonal lifting strap 330 are secured to flaps 296 and 292, respectively.
  • the strap is secured by stitching 334.
  • glue may be used to attach the strap to the flaps, or, in combination stitching and glue.
  • the diagonal lifting strap 332 is similarly secured at its ends to flaps 290 and 294, respectively.
  • Stitching 334 (not shown) is also employed to secure the strap to the flaps. Again, glue or combination glue and stitching may be used if desired.
  • the diagonal lifting straps 330 and 332 provide an effective way to lift the receptacle 250.
  • the straps are secured to the flaps which have a double layered thickness of material for added strength.
  • the diagonal attachment would permit the receptacle to be lifted by a single strap alone if desired.
  • the flaps stand upright, urging the lifting straps upward for easy insertion of a forklift or other lifting device under the straps.
  • a loop 350 is provided about the straps to insure that both straps are employed in lifting the receptacle.
  • Reinforcing bands 352 can be used as illustrated in FIGURE 36.
  • the bands 352 are secured along both the side panels at each of the first and third folds by gluing 354.
  • -the reinforcing bands 352 are formed integral with the diagonal lifting straps 330 and 332.
  • the bands 352 are folded over the flaps and glued onto both sides of the flaps.
  • separate reinforcing bands and straps can be used with the upper ends of the bands being secured to the lifting straps and flaps by stitching or other suitable fastening.
  • the materials forming sheet 252 and reinforcing bands 352 are the same, or have similar elasticity. This will reduce the shear forces on the stitching 354 or other securing material when the receptacle is lifted.
  • receptacle 250 comprises an improved collapsible receptacle having numerous advantages over the prior art.
  • the receptacle 250 is easily flattenable for storage and transport.
  • the steps in manufacture may readily be automated with no complex or intricate stitching being necessary.
  • the flaps formed by the stitching to form the top of the receptacle form effective structure for lifting the receptacle.
  • the glued side seams have been found to be much stronger than conventional sewed side seams in drop tests.
  • a sewed side.seam flexible receptacle was found to withstand only about a 30" drop.
  • the receptacle was a single wall sewn seam receptacle using four vertical panels of 6.5 square yards of fabric with a nominal fill strength of 275 pounds per inch.
  • the receptacle held a 2200 pound load during the test.
  • the work absorbed by the sewn sack is estimated to be 5500 foot pounds.
  • a receptacle incorporating a glued seam with the same nominal 275 pound per inch fabric and size has been found to take at least four drops of four feet with the same load.
  • the work absorbed by the glued seam is 35,200 foot pounds, or more than six times that of the sewn seam. While the sewn and glued seam have about the same pull strength, the glued seam is much stronger during the drop test. This can be attributed to the far better distribution of impact load in the fabric by the glued seam.
  • the use of the procedures shown in FIGURES 37-41 results in improved strength and greater resistance to damage to the receptacle resulting either from excessive loading or excessive mechanical shock.
  • a roll 360 comprises a length of flexible, yet unextensible, material 362.
  • Jute, cotton, polyethylene or polypropylene are examples of such materials. It has been found that woven polypropylene and woven polyethylene materials are advantageous because of their strength, durability and puncture resistance.
  • the length of material 362 is initially folded to provide a double layer of material.
  • any conventional technique may be used to fold the length of material 362, and inclined roller 364, a fixture 366 and a fixture 368 can advantageously be used for this purpose.
  • Lift loops 370 are inserted between the two layers comprising the folded length of material 362 at predetermined intervals.
  • the lift loops 370 preferably comprise U-shaped lengths of webbing of the type used in automobile seat belts and similar applications. Nylon, cotton, and similar materials may be used to weave the webbing which is used to form the lift loops 370.
  • An important feature of the present invention involves the fact that in positioning the lift loops 370 between the layers comprising the folded length of material 362, a gap or spacing is maintained between the two ends defining the U-shaped configuration of each lift loop 370 and the fold of the length of material 362. For example, in the practice of the invention it has been found advantageous to maintain a gap or spacing of approximately two (2) inches between the ends of the lift loops 370 and the fold of the length of material 362.
  • the folded length of material 362 having the lift loops 370 inserted between the layers thereof at predetermined intervals passes through a series of sewing machines 372.
  • a series of sewing machines 372 Although the use of three sewing machines 372 is illustrated in FIGURE.37, it will be understood that the particular number of sewing machines used is not critical to the practice of the invention. Thus, in situations in which each sewing machine has only a single sewing needle it may be necessary to employ as many as 6 or 8 sewing machines. Conversely, if a sewing machine having up to 8 sewing needles is provided then the invention may be practiced utilizing a single sewing machine.
  • the sewing procedure serves to simultaneously secure the two layers comprising the length of material 362 one to the other, and also secures the lift loops 370 therebetween.
  • the completed subassembly comprising the folded layers of the length of material 362 with the lift loops 370 secured therebetween is then wound onto a roll 374 with the loops 370 projecting from one end of the roll 374.
  • a roll 380 comprises a length of material 382 which preferably comprises a flexible, yet nonexpandable material-.
  • Natural or synthetic woven material may be employed. Jute, cotton, polyethylene or polypropylene are examples of such materials. It has been found that woven polypropylene or woven polyethylene materials are advantageous because of their strength, durability and puncture resistance.
  • the length of material 382 is approximately half as wide as the length of material 362 as shown in FIGURE 37.
  • the length of material 382 passes under a roller 384 and then through a mechanism 386 which applies adhesive to the surface of the length of material 3-82.
  • Lift loops 390 are then applied to the adhesive coated length of material 382.
  • the lift loops 390 are preferably formed from webbing of the type utilized in automotive seat belts and similar applications.
  • the webbing used to form the lift loops 390 may be formed from nylon, cotton, or similar materials.
  • the lift loops 390 are applied to the length of material 382 with the ends thereof defining the U-shaped configuration in a spaced apart relationship with respect to the adjacent edge of the length of material 382. That is, a gap or spacing is provided between the ends 390' of each lift loop 390 and the adjacent edge 382' of the length of material 382. In the practice of the invention a gap or spacing of approximately two (2) inches between the ends 390' of the lift loops 390 and the edge 382' of the length of material 382 has been found to be satisfactory.
  • the length of material 382 passes between a pair of pinch rollers 392.
  • the pinch rollers 392 function to securely engage the lift loops 390 with the adhesively coated surface of length of materials 382. After passing between the pinch rollers 392 the length of material 382 with the lift loops 390 adhesively secured thereto is wound upon a roll 394.
  • FIGURE 39 the construction of a collapsible receptacle by means of a length of material 400 having lift loops 402 secured thereto is shown.
  • the subassembly comprising the length of material 400 having lift loops 402 secured thereto may be formed either by means of the technique illustrated in FIGURE 37 or by means of the technique illustrated in FIGURE 38.
  • a semifinished collapsible receptacle 404 is mounted on a platen 406.
  • the receptacle 404 is preferably similar to the receptacle 250 illustrated in FIGURES 26-36. However, in accordance with the embodiment of FIGURE 39 it is not necessary to provide folds in the semifinished receptacle 404.
  • a pinch roller 408 is used to secure the receptacle 404 in engagement with the platen 406.
  • an adhesive applicator 412 is employed to deposit a layer of adhesive on the receptacle 404.
  • the leading edge of the layer of adhesive moves into the gap between the platen 406 and the pinch roller 408 the leading edge of the length of material 400 is simultaneously fed into the same gap.
  • the application of adhesive by means of the applicator 412 and the simultaneous advance of the receptacle 404 by means of the platen 406 continues until the receptacle 404 has made a complete revolution. At that time a knife 414 is actuated to sever the length of material 400. Rotation of the platen 406 continues until the trailing edge of the length of material 400 has been adhesively secured to the receptacle 404. If desired, some overlap may be provided between the leading edge of the length of material 400 which is initially secured to the receptacle 404 and the trailing edge of the length of material 400 which is finally secured to the receptacle 404.
  • the receptacle 404 is completed by securing top and bottom panels thereto.
  • the top panel may be formed as shown in FIGURES 2, 3 and 4 and as described hereinabove in connection therewith.
  • the bottom panel may be formed as shown in FIGURES 24 and 25 and as described hereinabove in connection therewith.
  • the bottom panel may be formed as shown in FIGURES 34 and as described hereinbefore in connection therewith.
  • FIGURES 40 and 41 collapsible receptacles 420 and 422 formed in accordance with the present invention are illustrated. Since the receptacles 420 and 422 are similar in many respects to those illustrated in FIGURES 1, 2, 13, 35 and 36, only the upper portions of the receptacles 420 and 422 are shown in FIGURES 40 and 41, respectively.
  • Receptacle 420 comprises a body 424 having a fabric strip 426 and lift loops 428 secured thereto.
  • the receptacle 420 is formed by first securing the lift loops 428 to the fabric strip 426 in accordance with the procedure of FIGURE 38, and then securing the fabric strip 426 having the lift loops 428 previously secured thereto to the body 424 in accordance with the procedure of FIGURE 39.
  • the receptacle 420 further includes a bottom panel which is not shown but which may be similar to the bottom panel illustrated in FIGURES 24 and 25 and described in conjunction therewith, and a top panel 430 which may be similar to the top panel shown in FIGURES 3 and 4 and described in conjunction therewith.
  • the top panel is secured to the body 424, the fabric strip 426 and the lift loops 428 by means of stitching 432.
  • the receptacle 422 comprises a body 434 having a fabric strip 436 and lift loops 438 secured thereto.
  • the lift loops 438 are first secured to the fabric strip 436 in accordance with the procedure of FIGURE . 37. Thereafter the fabric strip 436 having the lift loops 438 secured thereto is adhesively secured to the body 434 in accordance with the procedure of FIGURE 39.
  • the receptacle 422 further includes a bottom panel which is not shown but which may be similar to the bottom panel shown in FIGURES 24 and 25 and described in conjunction therewith, and a top panel 440 which may be similar to the top panel shown in FIGURES 3 and 4 and described in conjunction therewith.
  • the top panel 440 is secured to the body 434, the fabric layer 436 and the lift loops 438 by blinds of stitching 442.
  • the fabric strip 436 is secured thereto by double lines of stitching 444.
  • double lines of stitching 444 may also be used to further secure the strip 426 to the body 424 of the receptacle 420, if desired.
  • the ends 428' of the lift loops 428 are separated by a distance X from the lower edge 426' of the fabric strip 426.
  • the lower ends 438' of the lift loops 438 are separated by a distance X from the lower edge 436' of the fabric strip 436 of the receptacle 422.
  • Such separation between the lower ends of the lift loops and the lower edge of the fabric strip comprises an important feature of the present invention. By this means any stress concentration that might otherwise occur when the lift loops are used to lift the receptacle is eliminated.
  • the lifting force is transmitted from the lift loops into the adhesive layer which secures the lift loops and the overlying fabric strip to the body of the container and hence into the receptacle body with no undue stress concentrations occurring. This prevents both possible separation of the lift loops from the receptacle and possible tearing of the receptacle at the point of attachment of the lift loops thereto.
  • a length of fabric material 450 is received from a roll 452 and travels in the direction of an arrow 454.
  • a length of fabric material 450 may comprise various natural and synthetic materials fabricated utilizing various conventional techniques.
  • the length of fabric material 450 comprises woven fabric material formed from either polypropylene or polyethylene or both.
  • the length of fabric material 450 travels from the roll 52 around a roller 456 and then through a folding assembly 458 which folds one edge of the length of fabric material inwardly.
  • An adhesive application mechanism 460 deposits adhesive between the two layers of the folded edge of the length of fabric material 450 prior to engagement therebetween.
  • the folded edge of the length of fabric material 450 then passes between the pair of pinch rollers 462 which function to force the two layers comprising the folded edge into intimate contact with the adhesive, thereby assuring a strong bond.
  • the length of fabric material 450 next passes through an adhesive application mechanism 464.
  • the adhesive application mechanism 464 has an adhesive depositing head 466 which travels in the direction indicated by the arrow 468 at the same time the length of fabric material 450 is traveling in the direction indicated by the arrow 454. By this means the adhesive application mechanism 464 is caused to deposit V-shaped patterns of adhesive at spaced intervals along the length of fabric material 450.
  • a length of webbing material 470 is supplied from a roll 472.
  • Various natural and synthetic materials may be utilized in forming the length of webbing material 470.
  • the length of webbing material 470 is fabricated from polyester or nylon.
  • the length of webbing material 470 is positioned on the length of fabric material 450 so as to overlie each V-shaped pattern of adhesive as deposited by the adhesive application mechanism 464. As is clearly shown in FIGURE 42, this causes the length of webbing material 470 to be secured to the length of fabric material 450 in a series of loops 474. In each loop 474 the length of webbing material 470 is twisted one- half turn. At each point of attachment to the length of fabric material 450 the length of webbing material 470 is folded back upon itself to define a series of V-shaped folds 476 each positioned a predetermined distance from the adjacent edge 478 of the length of fabric material 450.
  • the length of fabric material 450 with the loops 474 comprising the length of webbing material 470 positioned thereon next passes between a pair of pinch rollers 480. Rollers 480 force the length of fabric material 450 and the length of webbing material 470 into intimate contact with the adhesive therebetween, thereby assuring a strong adhesive bond between the length of webbing material 470 and the length of fabric material 450.
  • the length of fabric material 450 with the loops 474 secured thereto next passes through a sewing machine 482.
  • the sewing machine 482 has a sewing head 484 which moves in the direction indicated by the arrow 486 as the length of fabric material moves in the direction indicated by the arrow 454.
  • the movement of the sewing head 484 is coordinated so that lines of stitching 488 are formed first along the folded edge of the length of fabric material 450, and then along the length of webbing material 470 at its point of attachment to the length of fabric material' - 450, and then along the folded edge of the length of fabric material, etc.
  • the sewing head may also be supported for rotational or pivotal movement about a vertical axis so as to maintain a predetermined spacing between the lines of stitching 488, or two or more separate sewing machines may be employed to form the lines of stitching 488.
  • loops 474 and the folds 476 comprising the length of webbing material 470 are secured to the length of fabric material both adhesively and by sewing.
  • the length of fabric material is wound onto a reel 490.
  • the loops 474 project outwardly from one end thereof.
  • FIGURE 43 illustrates the result of the steps illustrated in FIGURE 42.
  • the length of fabric material 450 has a folded upper edge, with the layers comprising the fold being adhesively secured in place.
  • the length of webbing material 470 is formed into a series of prefabricated lift loops 474.
  • the lift loops 474 are equal in size and equally spaced along the length of fabric material 450.
  • the lift loops 474 are secured to the length of fabric material 452 both adhesively and by means of sewing.
  • Sewing lines 488 are formed first along the folded upper edge of the length of fabric material 450, and then along the length of webbing material 470 at its points of attachment to the length of fabric material 450 to form the lift loops 474.
  • the length of webbing material 470 is twisted one half turn within each loop 474.
  • Adjacent lift loops 474 are interconnected by folds 476 each positioned a predetermined distance from the adjacent edge 478 of the length of fabric material 450.
  • the zones of attachment between the length of fabric material 450 and the length of webbing material 472 are of a V-shaped configuration with a predetermined angle - therebetween and with the fold 476 comprising the vortex of each angle.
  • the relationship between the attached portion of one lift loop 474 and the adjacent attached portion of the next lift loop 474 is preferably about 90°. That is, the angle between each attached lift loop portion and a line extending normal to the longitudinal axis of the length of fabric material 450 is about 45°.
  • FIGURE 43 The construction shown in FIGURE 43 is utilized to manufacture a receptacle in exactly the same manner shown in FIGURES 39, 40 and 41 and described hereinabove in connection therewith. That is, the length of fabric material 450 having the lift loops 474 secured thereto is in turn secured around the upper end of a tubular receptacle construction.
  • the length of fabric material 450 may be secured to the upper end of the tubular receptacle construction by means of an adhesive, or by means of sewing, or by means of a combination of the two techniques.
  • FIGURE 46 illustrates a bottom construction 491 which may be utilized in the practice of the invention.
  • a discharge chute 492 is formed from a rectangular length of fabric material. The length of fabric material is rolled into a tube, and the overlapping edges are secured in place, either by means of an adhesive or by means of sewing. The upper end of the tubular construction is then folded outwardly to form a flange 494.
  • An upper sheet 496 for the bottom construction 491 is formed from fabric. A circular aperture 498 is formed in the center of the upper sheet 496. The discharge chute is extended through the aperture 498 in the sheet 496 until the flange 494 engages the upper surface of the sheet 496. The discharge chute is then secured in place either by means of an adhesive or by sewing.
  • a lower sheet 500 for the bottom construction 491 is also formed from fabric.
  • the lower sheet 500 has a rectangular aperture 502 formed in the center thereof.
  • a length of fabric 504 is secured to the bottom sheet 500 by sewing and normally overlies the - aperture 502 to form a protective closure.
  • a pair of semicircular lift fork receiving members 506 are positioned between the upper sheet 496 and the lower sheet 500 by the receptacle bottom construction.
  • the lift fork receiving members 506 are preferably formed from cardboard, but may also be formed from other suitable materials, such as plastic.
  • the bottom construction 491 is completed by sewing the sheets 496 and 500 one to the other. Lines of stitching are extended along each edge of each lift fbrk receiving member 506 so that the members 506 are secured in place.
  • FIGURE 47 there is shown a collapsible receptacle 510 constructed in accordance with the embodiments of the invention illustrated in FIGURES 42, 43 and 46.
  • the receptacle 510 has a side wall 512 formed from fabric material, preferably woven polypropylene or woven polyethylene material.
  • the side wall 512 comprises a rectangular piece of fabric material which is rolled into a tubular configuration. The overlapping edges of the side wall 512 are then secured to each other, either by means of an adhesive or by means of sewing, or by a combination of both techniques.
  • the length of fabric material 450 shown in FIGURE 43 is secured to the upper end of the sidewall 512 of the receptacle 510.
  • the length of fabric material 450 is secured to the sidewall 512 either by means of an adhesive layer, or by means of sewing, or by means of a combination of the two techniques.
  • the length of fabric material 450 is secured to the sidewall 512 with the lift loops 474 projecting above the upper end of the sidewall.
  • the lift loops 474 are thus positioned to receive the lift forks 514 of a lift truck 516. With the lift forks 514 thus received in the lift loops 474 the lift truck 516 may be utilized to raise and lower the receptacle 510; to position the receptacle 510 for filling, for storage, or for discharge; etc.
  • the receptacle 510 further includes a top wall 518 secured to the upper end of the side wall 512 and serving to close the upper end of the receptacle.
  • the top wall 518 may be fabricated in accordance with other aspects above the invention, for example, the top wall 518 may be fabricated as shown in FIGURE 4.
  • the top wall 518 may be secured to the upper end of the side wall 512 by means of a line of stitching 520 also serving to secure or to partially secure the length of fabric material 450 to the side wall 512.
  • the receptacle 510 also includes a bottom wall 522.
  • the bottom wall 522 shown in FIGURE 47 is of the type incorporating the embodiment of the invention illustrated in FIGURE 46.
  • the bottom wall 522 includes lift fork receiving members 506 adapted to receive the lift forks of a fork lift truck, whereby the receptacle 510 may be manipulated from the bottom, rather than from the top.
  • the receptacle 510 is normally positioned utilizing lift forks, such as the lift forks 514, received through the lift loops 474. However, in certain instances there may be insufficient room above the desired positioning of the receptacle to permit use of the lift loops 474 for manipulation of the receptacle. In such instances the members 506 may be utilized to receive lift forks such as the lift forks 514 of the lift truck 516.
  • the receptacle 510 may be constructed utilizing the fabric layer 450 and the loops 474 secured thereto without utilizing a bottom wall 522 of the type shown in FIGURE 46.
  • the receptacle 510 may be fabricated utilizing a bottom wall of the type shown in FIGURE 24.
  • the receptacle 510 may utilize the bottom wall construction shown in FIGURE 46 without utilizing the fabric layer 450.
  • the various types of lift fork receiving loops.shown in FIGURES 1, 35, 37 and 38 may be utilized in the receptacle 510 in lieu of the loops 474, or the receptacle 510 may be fabricated without any lift loops whatsoever.
  • FIGURE 44 there is shown a modification of the embodiment of the invention illustrated in FIGURES 42 and 43.
  • various components are utilized which are substantially identical in construction and function to components utilized in the embodiment of FIGURES 42 and 43.
  • Such identical components are indicated in FIGURE 44 with the same reference numerals utilized in conjunction with FIGURES 42 and 43, but are differentiated therefrom by means of a prime (') designation.
  • a fabric layer 450' has a folded upper edge which is adhesively secured in place.
  • the length of webbing material 470' is secured to the length of fabric material 450' in the manner illustrated in FIGURE 2, that is, preliminarily by means of an adhesive layer positioned between the length of fabric material 450' and the length of webbing material 472', and thereafter by means of sewing which results in lines of stitching 488'.
  • the length of webbing material 470' is secured to the length of fabric material 450' in the form of a series of lift loops 474'.
  • the lift loops 474' are identical in size and are positioned at spaced intervals along the length of fabric material 450.
  • the length of webbing material 470' is twisted one half turn within each loop 474.
  • the length of webbing material 470' further includes a plurality of folds 476'.
  • the sole distinction between the embodiment of the invention shown in FIGURE 43 and the modification thereof shown in FIGURE 44 is that in accordance with the modification of FIGURE 44, the folds 476' of the length of webbing material 470' are positioned beneath the lower edge 478' of the length of fabric material 450'. This produces a small open loop 524 situated between each fold 476' and the adjacent lower edge 478' of the length of fabric material 450'.
  • FIGURE 45 there is shown a receptacle 526 incorporating the modification of FIGURE 44.
  • Many of the component parts of the receptacle 546 are substantially identical in - construction and function to component parts of the receptacle 510 shown in FIGURE 46 and discussed hereinabove in connection therewith.
  • Such identical component parts are indicated in FIGURE 45 by means of the same reference numerals utilized in FIGURE 47, but are differentiated therefrom by means of a prime (') designation.
  • the receptacle 546 has a bottom wall 548 formed in accordance with the teaching of FIGURE 25. Such a bottom wall has a discharge spout 550 which is closed by means of a drawstring 552.
  • the receptacle 546 utilizes a sling 554.
  • the sling includes a lower ring or loop 556 surrounding the discharge spout 550 of the bottom wall 548.
  • the sling further includes four straps 560 each having loops 562 and 564 at the opposite ends thereof.
  • Each loop 562 surrounds the lower ring 556, and each loop 564 extends through one of the loops 524 formed by the length of webbing material 570' secured to the length of fabric material 450'. It will thus be understood that the lift loops 474 operate through the sling 554 to support the contents of the receptacle 526.
  • the sling 554 is actually considered redundant because, as is true in the case of the receptacle 510 shown in FIGURE 47, the fabric comprising the receptacle 526 is fully capable of supporting the contents thereof.
  • the use of an external sling is considered desirable, and in such instances the embodiment of FIGURE 45 may be used.
  • FIGURES 42, 43, 44, 45 and 47 The use of the embodiments of the invention shown in FIGURES 42, 43, 44, 45 and 47 is highly advantageous because, in accordance with certain - applications of the invention, an individual lift loop of a receptacle must be capable of supporting the entire contents thereof while the remaining lift loops are entirely unsupported.
  • the lift loops therein disclosed are secured to the underlying length of fabric material at a substantial angle with respect a line extending normal to the longitudinal axis of the length of fabric material.
  • the weight of the contents of the- receptacle is transferred to the lift loops in a direction tending to prevent stress concentrations which in turn prevents the lift loops from separating from the underlying structure of the receptacle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP82306997A 1981-12-31 1982-12-30 Zusammenlegbare Behälter mit vorgefertigter Hebeöse und Verfahren hierzu Ceased EP0083505A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US33645581A 1981-12-31 1981-12-31
US37600482A 1982-05-07 1982-05-07
US376004 1982-05-07
US336455 1994-11-09

Publications (1)

Publication Number Publication Date
EP0083505A1 true EP0083505A1 (de) 1983-07-13

Family

ID=26990217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82306997A Ceased EP0083505A1 (de) 1981-12-31 1982-12-30 Zusammenlegbare Behälter mit vorgefertigter Hebeöse und Verfahren hierzu

Country Status (1)

Country Link
EP (1) EP0083505A1 (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161452A (en) * 1984-07-09 1986-01-15 Humber Fabrics Ltd Bulk container bags
EP0302191A1 (de) * 1987-06-05 1989-02-08 Custom Packaging Systems, Inc. Flexibler Grosssack und Verfahren zu seiner Herstellung
WO1990001008A1 (en) * 1988-07-20 1990-02-08 Veikko Salli Method in the storage and collection of waste as well as waste container and waste sack or the like for carrying out the method
EP0376622A1 (de) * 1988-12-21 1990-07-04 Norsk Hydro A/S Flexibler Behälter
EP0411683A2 (de) * 1989-07-29 1991-02-06 Mulox Ibc Limited Flexibler Grossbehälter
EP0412178A1 (de) * 1988-03-03 1991-02-13 Oy W. Rosenlew Ab Grossformat-Sack mit einem Innensack
WO1991008966A1 (en) * 1989-12-20 1991-06-27 Bowater Packaging Limited Improvements relating to bulk containers
EP0510262A1 (de) * 1991-04-23 1992-10-28 Condepols, S.A. Flexibler Behälter für den Transport und die Lagerung von Schüttgütern
ES2049122A1 (es) * 1991-04-23 1994-04-01 Condepols Sa Metodo de fabricacion de un contenedor de material flexible para productos a granel.
WO1994029189A1 (en) * 1993-06-07 1994-12-22 Koninklijke Emballage Industrie Van Leer B.V. Method for production of a block-shaped container
EP0661223A1 (de) * 1993-12-27 1995-07-05 Nampak Products Limited Flexibler Behälter für Schüttgut
EP0665175A1 (de) * 1994-02-01 1995-08-02 Bridgestone Corporation Verpackungssäcke
BE1015851A3 (nl) * 2004-01-09 2005-10-04 Rosenlew Nv Hulpstuk voor een flexibele bulkcontainer.
WO2006032073A1 (en) * 2004-09-22 2006-03-30 Devise Properties Pty Ltd Apparatus and method for receiving and storing recyclable product
AT502869B1 (de) * 2005-12-15 2008-01-15 Storsackeurea Technology Gmbh Transportvorrichtung
WO2010151367A1 (en) * 2009-06-22 2010-12-29 Sonoco Development, Inc. Flexible bulk containers liftable from below by a forklift and support system
NL2009125C2 (nl) * 2012-07-05 2014-01-07 Smq Group B V Een houder voor het vervoeren van massagoed, en een inrichting en werkwijze voor het legen van een houder.
NL2017313B1 (en) * 2016-08-12 2018-02-16 Blue Ocean Containers B V A big bag container
EP3360823A1 (de) * 2017-02-14 2018-08-15 Andocksysteme G. Untch GmbH Flexibles gebinde, verwendung eines flexiblen gebindes
CN113697300A (zh) * 2020-05-07 2021-11-26 乐恩转换工程股份公司 多用途的且可回收利用的容纳系统以及相关方法
DE102017109350C5 (de) 2017-02-14 2022-11-10 Andocksysteme G. Untch Gmbh Transport-, Handlings-, und Lagergebinde

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2352564A (en) * 1943-07-08 1944-06-27 Louis M Rabinowitz Fastening strip
CH362980A (fr) * 1959-07-30 1962-06-30 Ets Poliet & Chausson Réservoir souple pour produits pulvérulents et granuleux
DE1816627A1 (de) * 1968-12-23 1970-06-25 Span Set Ges Fuer Transportsys Grossraum-Transportbehaelter fuer fluessiges oder fliessfaehiges Gut
GB2050298A (en) * 1979-06-08 1981-01-07 Super Sack Mfg Corp Collapsible receptacle with integral sling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2352564A (en) * 1943-07-08 1944-06-27 Louis M Rabinowitz Fastening strip
CH362980A (fr) * 1959-07-30 1962-06-30 Ets Poliet & Chausson Réservoir souple pour produits pulvérulents et granuleux
DE1816627A1 (de) * 1968-12-23 1970-06-25 Span Set Ges Fuer Transportsys Grossraum-Transportbehaelter fuer fluessiges oder fliessfaehiges Gut
GB2050298A (en) * 1979-06-08 1981-01-07 Super Sack Mfg Corp Collapsible receptacle with integral sling

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161452A (en) * 1984-07-09 1986-01-15 Humber Fabrics Ltd Bulk container bags
EP0302191A1 (de) * 1987-06-05 1989-02-08 Custom Packaging Systems, Inc. Flexibler Grosssack und Verfahren zu seiner Herstellung
EP0412178A1 (de) * 1988-03-03 1991-02-13 Oy W. Rosenlew Ab Grossformat-Sack mit einem Innensack
WO1990001008A1 (en) * 1988-07-20 1990-02-08 Veikko Salli Method in the storage and collection of waste as well as waste container and waste sack or the like for carrying out the method
US5238356A (en) * 1988-07-20 1993-08-24 Veikko Salli Method in the storage and collection of waste as well as waste container and waste sack or a like for carrying out the method
EP0376622A1 (de) * 1988-12-21 1990-07-04 Norsk Hydro A/S Flexibler Behälter
EP0411683A2 (de) * 1989-07-29 1991-02-06 Mulox Ibc Limited Flexibler Grossbehälter
EP0411683A3 (en) * 1989-07-29 1991-03-13 Mulox Ibc Limited Container bag
WO1991008966A1 (en) * 1989-12-20 1991-06-27 Bowater Packaging Limited Improvements relating to bulk containers
AU640986B2 (en) * 1989-12-20 1993-09-09 Rexam Packaging Limited Improvements relating to bulk containers
EP0510262A1 (de) * 1991-04-23 1992-10-28 Condepols, S.A. Flexibler Behälter für den Transport und die Lagerung von Schüttgütern
ES2049122A1 (es) * 1991-04-23 1994-04-01 Condepols Sa Metodo de fabricacion de un contenedor de material flexible para productos a granel.
WO1994029189A1 (en) * 1993-06-07 1994-12-22 Koninklijke Emballage Industrie Van Leer B.V. Method for production of a block-shaped container
NL9300978A (nl) * 1993-06-07 1995-01-02 Leer Koninklijke Emballage Werkwijze voor het vervaardigen van een blokvormige houder.
EP0661223A1 (de) * 1993-12-27 1995-07-05 Nampak Products Limited Flexibler Behälter für Schüttgut
EP0665175A1 (de) * 1994-02-01 1995-08-02 Bridgestone Corporation Verpackungssäcke
BE1015851A3 (nl) * 2004-01-09 2005-10-04 Rosenlew Nv Hulpstuk voor een flexibele bulkcontainer.
WO2006032073A1 (en) * 2004-09-22 2006-03-30 Devise Properties Pty Ltd Apparatus and method for receiving and storing recyclable product
AT502869B1 (de) * 2005-12-15 2008-01-15 Storsackeurea Technology Gmbh Transportvorrichtung
WO2010151367A1 (en) * 2009-06-22 2010-12-29 Sonoco Development, Inc. Flexible bulk containers liftable from below by a forklift and support system
NL2009125C2 (nl) * 2012-07-05 2014-01-07 Smq Group B V Een houder voor het vervoeren van massagoed, en een inrichting en werkwijze voor het legen van een houder.
NL2017313B1 (en) * 2016-08-12 2018-02-16 Blue Ocean Containers B V A big bag container
EP3360823A1 (de) * 2017-02-14 2018-08-15 Andocksysteme G. Untch GmbH Flexibles gebinde, verwendung eines flexiblen gebindes
DE102017109350C5 (de) 2017-02-14 2022-11-10 Andocksysteme G. Untch Gmbh Transport-, Handlings-, und Lagergebinde
CN113697300A (zh) * 2020-05-07 2021-11-26 乐恩转换工程股份公司 多用途的且可回收利用的容纳系统以及相关方法

Similar Documents

Publication Publication Date Title
US4479243A (en) Collapsible receptacle with prefabricated lift loops and method of making
US4457456A (en) Collapsible receptacle with static electric charge elimination
US4759473A (en) Collapsible receptacle with integral sling
EP0083505A1 (de) Zusammenlegbare Behälter mit vorgefertigter Hebeöse und Verfahren hierzu
US4224970A (en) Collapsible receptacle for flowable materials
US4194652A (en) Collapsible receptacle for flowable materials
US4143796A (en) Collapsible receptacle for flowable materials
KR950000585B1 (ko) 화물용 자루 및 그의 형성방법
US5564833A (en) Container bag
US9346612B2 (en) Flexible liner for FIBC or bag-in-box container systems
US4253507A (en) Reinforced container for bulk materials
US4597102A (en) Intermediate bulk container
US7476028B2 (en) Bulk bag for meat and meat products
US4781475A (en) Reinforced bulk bag
US4301848A (en) Bags for containing bulk material
US4524457A (en) Cargo bag with reinforced triangular lifting panels
EP0703162A1 (de) Recyclebarer, flexibler Schüttgutbehälter
US4726169A (en) Process of manufacturing sacks from synthetic thermoplastic material
CA1158574A (en) Collapsible receptacle with integral sling
US5758973A (en) Bulk bag with reinforced lift straps
US4269247A (en) Large size sack and methods for the formation thereof
AU734247B2 (en) Container bag
GB1602726A (en) Bulk material container
JP2730557B2 (ja) たわみ可能な中間ばら荷コンテナ
CA1212908A (en) Collapsible receptacle with static electric charge elimination

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB NL

17P Request for examination filed

Effective date: 19840109

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19860829

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DERBY, NORWIN CEDRIC

Inventor name: WILLIAMSON, ROBERT RAY