EP0372173A2 - Revêtement interieur souple pour tonneaux fûts et emballages rigides similaires - Google Patents

Revêtement interieur souple pour tonneaux fûts et emballages rigides similaires Download PDF

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Publication number
EP0372173A2
EP0372173A2 EP89117002A EP89117002A EP0372173A2 EP 0372173 A2 EP0372173 A2 EP 0372173A2 EP 89117002 A EP89117002 A EP 89117002A EP 89117002 A EP89117002 A EP 89117002A EP 0372173 A2 EP0372173 A2 EP 0372173A2
Authority
EP
European Patent Office
Prior art keywords
inner lining
edges
bag
flat
sack
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.)
Withdrawn
Application number
EP89117002A
Other languages
German (de)
English (en)
Other versions
EP0372173A3 (fr
Inventor
Alois Gröner
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.)
Bischof and Klein SE and Co KG
Original Assignee
Bischof and Klein SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bischof and Klein SE and Co KG filed Critical Bischof and Klein SE and Co KG
Publication of EP0372173A2 publication Critical patent/EP0372173A2/fr
Publication of EP0372173A3 publication Critical patent/EP0372173A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings

Definitions

  • the invention relates to a flexible inner lining in the form of a sack or bag for barrels, drums and the like.
  • Hard packaging with a round or rounded bottom, the inner lining being formed by a sack tube with a round bottom corresponding to the bottom of the hard packaging at one of its two ends.
  • Known inner linings of this type are generally produced in such a way that the flexible material of the sack tube, such as plastic film, paper or suitable laminates, is expanded in a spatial manner, as a result of which the sack tube has a cylindrical or the inner circumference of the associated one Received barrel or the like. Adapted shape.
  • the open end of the bag hose is then provided with a correspondingly round bottom or cover, the edge flanges for their connection, for example welding or gluing, to the adjacent bag hose wall.
  • connection is inevitably associated with wrinkling in the edge of the lid or bottom, as a result of which the connection itself may have weak points and possibly a complete emptying of the hard packaging provided with an inner lining designed in this way is counteracted by the filled, generally powdery filling material.
  • this manufacturing process is very time-consuming and labor-intensive, so that the known inner linings with a round floor are subject to high production costs.
  • the invention has for its object to provide a flexible inner lining in the form of a sack or bag for barrels, drums and the like. Hard packaging with a round or rounded bottom, which can be easily machined in good quality.
  • the round bottom has the basic shape of a cross bottom with two opposite corner folds, which start with their diagonal fold edges from the opposite original side fold edges of the flat sack bag and face each other , cross-edges extending between their diagonal fold edges are connected to each other by a flat material connection, and that the diagonal fold edges of the corner folds, which are opposite each other on both sides of the central transverse plane of the round base, are each connected by an arched, outwardly curved connecting seam of the round base with the adjoining, each between the Bag hose side fold edges extending flat wall of the bag hose are connected to each other.
  • the round bottom can be formed in a manner known per se from the production of the cross base and with the machine units used for this purpose at the end of the flat sack tube, in that, as is customary with cross bases, this end of the sack tube is pulled up over an open cross base over the bottom middle break line.
  • the corner folds customary in the case of cross bottoms are formed which, with their diagonal fold edges, originate from the mutually opposite original side fold edges of the flat sack tube.
  • the distance between the bottom middle line of the sack hose end, on which the round bottom is to be molded, can be dimensioned so large that the corner folds formed when the end of the sack hose is pulled open to the open cross base with their transverse edges brought into mutual opposition and by a flat surface Connection seam, such as an adhesive or weld seam, can be connected to one another.
  • the flat material connection formed in this way between the two corner folds can, however, instead be formed by a bottom middle sheet which is connected flatly with its transverse edges lying within the bottom contour to the adjacent transverse edges of the corner folds.
  • the round bottom is closed on its longitudinal or outer sides by the fact that the diagonal fold edges of the corner folds, which are opposite each other on both sides of the central transverse plane of the round bottom, are formed by an arcuate, outwardly curved connecting seam of the round bottom with the adjacent, in each case between the sack hose. Side fold edges extending flat wall of the bag hose are connected to each other. These arcuate connecting seams can also be formed by adhesive or welded seams, depending on the material used for the bag hose. The gusset areas of the base lying outside the arc-shaped connecting seams are cut off, so that the round bottom receives its contour through the arc-shaped connecting seams in connection with the diagonal folding edges of the corner folds which continue at the end.
  • All the connecting seams can be produced with conventional aggregates without the formation of wrinkles and also do not prevent a barrel or the like provided with an inner lining according to the invention from being completely emptied of the powdery filling material.
  • the manufacturing cost of the inner lining according to the invention is significantly reduced thanks to the manufacturing process of the round bottom carried out on the flat sack hose.
  • a round base designated as a whole by 1 is molded onto one end of a bag tube 2.
  • the bag tube 2 is formed by a tube piece separated in a corresponding length from a flat tube made of plastic film, for example, which has on its two longitudinal edges the original side fold edges 3 and 4 originating from the starting material in the form of a flat tube. Between the two side fold edges 3 and 4, a flat wall 5 is formed, which form the front and back wall of the flat-lying bag hose 2 according to the drawing.
  • the corresponding end of the sack tube 2 is drawn up to an open cross bottom along a bottom center line 7 extending transversely to the longitudinal axis 6 of the sack tube 2, opposite corner folds 8 and 9 being formed, which with their diagonal fold edges 10 and 11 are each from the adjacent side fold edge 3 or 4 of the bag hose 2 and extend with their transverse edge 12, which runs between the pairs of diagonal fold edges 10 and 11, respectively, towards the central transverse plane of the round bottom 1 defined by the hose longitudinal axis 6.
  • the distance of the bottom center line 7 from the transverse edge of the adjacent sack hose end is dimensioned so large in the exemplary embodiment according to FIG.
  • the connecting seam 13 is identified in FIG. 1 by cross hatching and is designed in the manner of a so-called fin seam, in which the mutually facing inner sides of the transverse edges 12 of the corner inserts 8, 9 are connected to one another, in particular welded. This fin seam 13 has then been folded flat on the corner wrap 9 along a folding edge 14 lying in the central transverse plane of the round base 1.
  • the round bottom 1 is closed by the fact that on both sides of the longitudinal center plane of the round bottom 1, as defined by the bottom center line 7, an arcuate, according to externally curved connecting seam 15 is attached, which in turn can be formed by adhesive or welded seams.
  • an arcuate, according to externally curved connecting seam 15 is attached, which in turn can be formed by adhesive or welded seams.
  • the originally existing outside the connecting seams 15, by the correspondingly wide corner inserts 8 and 9 resulting triangular corners are separated in the course of attaching the connecting seams 15, so that finally the contour of the round bottom 1 shown in FIG. 1 is present, which is formed by the arc-shaped connecting seams 15 in connection with the diagonal fold edges continuing at the end 10, 11 of the corner turns 8, 9
  • the bag tube is spread apart and adds to the usual cylindrical basic shape of the barrel or the like, with the Round bottom 1 from the flat-lying position shown in Fig. 1, in which it is folded with one half onto the adjacent flat wall 5 of the bag hose, is converted into a substantially round shape corresponding to the bottom of the barrel.
  • the open head end 16 of the sack hose 2 is provided with lateral connecting seams 17 between the two flat walls 5 of the sack hose 2 lying against one another in order to narrow the sack hose diameter in the head end region.
  • the connecting seams 17, which can be formed in particular by weld seams, start from the respective side fold edge 3 or 4 and are straight, obliquely inward and then, with an angle parallel to the longitudinal axis 6 of the hose, lead to the upper edge 18 of the sack hose, in which they open out.
  • These connecting seams 17 can also be guided straight and obliquely obliquely from the respective side fold edge 3 or 4 to the edge edge 18 without angling.
  • Corner parts 19 of the bag tube 2 can be removed in the course of the formation of the connecting seams 17.
  • the head end 16 of the bag tube 2 which is tapered in its diameter in this way, can be fixed on a correspondingly tapered barrel or drum rim so that it is wrinkle-free by turning it outwards. After filling the barrel or the like provided in this way with the inner lining, an upper cover can finally be applied, overlapping the turned-up head end area of the bag hose 2.
  • the embodiment according to FIG. 2 has a bag hose 2 'with a round bottom 1, which corresponds in all details to the round bottom 1 of the bag hose 2 according to FIG. 1, the bag hose 2' itself, however, deviates from the embodiment according to FIG. 1 via the Length of the tube piece 2 'areas of different diameters to adapt to a correspondingly shaped inner circumference of the hard packaging. While the upper end region 20 at the head end 16 of the hose section 2 'has the original nominal diameter, as defined by the transverse dimension between the two side fold edges 3 and 4 of the originally flat hose section, mechanical or thermomechanical stretching of the flat hose compared to its original nominal diameter means extended length ranges 21, 22 and 23 formed.
  • the length region 21 is cylindrical, while the length regions 22 and 23 are frustoconical.
  • the frustoconical extension region 22 merges with the smaller diameter into the nominal diameter region 20 at the head end 16 and with its larger diameter into the cylindrical extension region 21.
  • FIG. 3 shows a bag hose 2 with a round bottom 1 ', which differs from the round bottom 1 according to the embodiments according to FIGS. 1 and 2 in that the two corner pieces 8 and 9 are not directly connected to each other at their transverse edges 12 are, but that a bottom middle sheet 24 is placed between the two corner pieces 8 and 9 and connects them flatly.
  • the bottom middle sheet 24 with its transverse edges 25 overlaps the respective inner transverse edge 26 of the corner inserts 8 and 9 with a narrow edge area in which a connecting seam 27, for example an adhesive or welded seam, between the bottom middle sheet 24 and the respective corner insert 8, 9 is added to the latter Connection is made.
  • the arch-shaped connecting seams 28 provided in this exemplary embodiment analogously to the arch-shaped connecting seams 15 of the exemplary embodiments according to FIGS. 1 and 2 extend essentially only over the length of the outer edges of the bottom middle sheet 24 and, like the connecting seams 15, go into the diagnostic fold edges 10, 11 of the corner turns 8, 9 over.
  • the original triangular lobes lying outside the connecting seams 28 were in turn cut off during the production of the connecting seams 28.
  • the arc-shaped connecting seams 28 cross the connecting seams 27 at their two ends, so that in turn an all-round round bottom 1 'with a contour corresponding to the round bottom 1 of the exemplary embodiments described above is present.
  • the bottom middle sheet 24 requires, in comparison to the embodiments according to FIGS. 1 and 2, a correspondingly shortened projection dimension of the corner folds 8 and 9 from the sack tube side rebate edges 3 and 4 to the central transverse plane of the bottom, as is the case with a correspondingly smaller one Distance dimension of the bottom center line 7 is reached from the transverse edge of the adjacent end of the hose section.
  • the bag hose 2, 2 'in the embodiments according to FIGS. 1 to 3 is each provided with an open head end 16
  • the bag hose 2 ⁇ in the embodiment according to FIG. 4 is with a head end closure 29 analogous to the round bottom 1 at its opposite end Mistake.
  • the round bottom 1 corresponds in this embodiment in all respects to the round bottom 1 of the embodiments according to the figures 1 and 2, and the head end closure 29 in turn corresponds in all construction details to the round bottom 1, as is indicated by using the same reference numerals.
  • the connecting seam 13 While in the round bottom 1 the connecting seam 13 is folded over on the corner wrap 9, in contrast to this in the head end closure 29 the connecting seam 13 is folded over on the corner wrap 8 and in the corner wrap 9 a sleeve 31 defining a bung hole 30 with an open through channel is incorporated.
  • the sleeve 31 is provided at one end with an annular flange 32 with which it is glued or welded to the inside of the corner wrap 9.
  • This configuration is intended for use with bung barrels, with a further bung hole at another location in the head end closure 29, e.g. can be formed in the corner fold 8, with a sleeve or the like. Ring part with an open through channel analog to the sleeve 31.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
EP19890117002 1988-12-07 1989-09-14 Revêtement interieur souple pour tonneaux fûts et emballages rigides similaires Withdrawn EP0372173A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8815202U 1988-12-07
DE8815202U DE8815202U1 (de) 1988-12-07 1988-12-07 Flexible Innenauskleidung für Fässer, Trommeln und dgl. Hartverpackungen

Publications (2)

Publication Number Publication Date
EP0372173A2 true EP0372173A2 (fr) 1990-06-13
EP0372173A3 EP0372173A3 (fr) 1990-09-19

Family

ID=6830533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890117002 Withdrawn EP0372173A3 (fr) 1988-12-07 1989-09-14 Revêtement interieur souple pour tonneaux fûts et emballages rigides similaires

Country Status (2)

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EP (1) EP0372173A3 (fr)
DE (1) DE8815202U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6966697B2 (en) 2002-02-22 2005-11-22 Pactiv Corporation Trash bags with narrowing seals to facilitate gripping
WO2006105860A1 (fr) * 2005-04-08 2006-10-12 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Sachet tubulaire a fond plie en v ou en w

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040260A1 (de) * 1990-12-17 1992-07-02 Real Pack Gmbh Zweiteiliger fluessigkeitsbehaelter
DE4226337A1 (de) * 1992-08-08 1994-02-10 Weidenhammer Packungen Verpackung mit einem Folienbeutel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1879410A (en) * 1931-08-28 1932-09-27 Paper Service Co Art of inserting liners into containers
DE955923C (de) * 1954-10-19 1957-01-10 Gummiwerk Odenwald Hirschberge Rundsack oder -beutel aus einem Kunststoffschlauchstueck und Verfahren zu seiner Herstellung
DE1411863A1 (de) * 1962-07-21 1969-05-14 Windmoeller & Hoelscher Kreuzbodensack aus schweissbarem Werkstoff sowie Verfahren und Einrichtung zu seiner Herstellung
NL7011940A (fr) * 1970-08-13 1972-02-15

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6966697B2 (en) 2002-02-22 2005-11-22 Pactiv Corporation Trash bags with narrowing seals to facilitate gripping
US7344309B2 (en) 2002-02-22 2008-03-18 Pactiv Corporation Trash bags with narrowing seals to facilitate gripping
WO2006105860A1 (fr) * 2005-04-08 2006-10-12 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Sachet tubulaire a fond plie en v ou en w

Also Published As

Publication number Publication date
DE8815202U1 (de) 1989-01-19
EP0372173A3 (fr) 1990-09-19

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