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
  • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
  • B65D3/22—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines with double walls; with walls incorporating air-chambers; with walls made of laminated material

Definitions

• the invention relates to a method for producing a tight packing according to the preamble of claim 1. It also relates to a blank for producing a tight packing and a tight packing.
• the milk packs are relatively tight packaging, in which the cardboard base layer, which gives the strength, is provided by protruding connection points taken outwards is shielded from the content so that the cut edges cannot be softened.
• the joints of the edges can at best be folded outwards and then form zones of at least triple material strength, which form annoying humps in further connections and are therefore difficult to seal there. If caught, such a connection point can lead to tearing and thus destruction of the package.
• the invention has for its object to provide a tight packaging in a simple manner, which is economically and ecologically advantageous in terms of material and the connection points can be kept relatively thin.
• the method according to the preamble of claim 1 corresponds essentially to the production of milk packs and has the disadvantage above all that either a cut edge lies freely in the inside of the pack and there is softened and leaky, or else the cut edges are outside and represent a disturbing bead, who can hardly take part in other liaison offices.
• the first measures are taken when the packaging material is formed.
• a breakthrough is initially formed in the base layer (for example paper, cardboard and the like, optionally in multiple layers and / or coated) in addition to at least one connecting edge.
• a plastic film for example polypropylene etc.
• a blank is now produced from the packaging material thus obtained, in which at least one A foil tab is created at the connecting edge.
• the material of this film flap is formed from the part of the plastic film which covered the opening.
• connection point A relatively thin and yet dense connection point is obtained in which the sealing film tab does not influence the thickness of the connection point.
• paper or cardboard-like materials are preferably used for the base layer, besides the reinforcing effect of the fibrous material, a very simple, inexpensive and beautiful printing process can be used.
• the packing material as a roll or
• the finished blanks can also be moved to the place where the package is finished, for example when filling.
• packaging material and a blank are the subject of the invention.
• the packaging material is characterized in that it has a base layer and at least one plastic film connected to it, wherein in addition to at least one connecting edge, the plastic film bridges a breakthrough in the base layer with a film part. This film part forms a free-standing film flap in the cut.
• the base layer is preferably at least partially paper-like or cardboard-like.
• the base layer is enclosed between two plastic foils.
• Show it: 1 is a plan view of a fragment of a packaging material which has a vertically hatched cardboard as the base layer, from which the openings have already been punched out and on the side facing the viewer (later on the inside of the package) a horizontally hatched plastic covering the openings. Film is applied,
• FIG. 2 is a plan view similar to FIG. 1 of a single blank finished by die-cutting
• Fig. 3 is a small overall view of a pack
• Cylinder jacket is made from the blank, and a shell-shaped bottom or cover is inserted in each of its two ends,
• FIG. 4 shows an enlarged section through the connection point in FIG.
• a base layer part e.g. pre-coat or laminate a paper, unprinted or printed, so that in such a case the base layer 1 itself is a multi-layer sheet.
• the base layer 1 can be processed from a roll or as a sheet, the openings 11 being punched out with a punching machine. In principle, this can be done next to all the connecting edges 42, 43. In the example shown, an opening 11 is only indicated next to each connecting edge 42.
• the base layer 1 provided with openings 11 is then connected with a plastic film 2, with film parts 21 also covering the openings 11.
• the other side of the base layer could also be covered with a plastic film, which can happen particularly if 43 openings (not shown here) have also been provided next to the connecting edges.
• a packaging material 3 is obtained from the base layer 1 and the at least one plastic film 2, from which one can blanks 4 now produced by contour punching.
• punching the film part 21 is left next to the connecting edge 42, so that a film tab 41 is formed there.
• a film flap (not shown) could also be produced next to the connecting edge 43 (especially with a base layer covered with plastic film on both sides).
• round covers 5 will also be produced, which can simply be punched out of the same composite of base layer and plastic film. But one can also produce end closures of the cylinder in other known ways.
• the blank 4 is bent together with an internal plastic film.
• the two round covers 5 can now be welded into the cylinder ends in a manner known per se.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cartons (AREA)
• Making Paper Articles (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4192518

Family Applications (1)

Country Status (6)

Citations (4)

• 1991
  • 1991-03-06 CH CH674/91A patent/CH680724A5/de not_active IP Right Cessation
  • 1991-04-17 CA CA 2082403 patent/CA2082403A1/en not_active Abandoned
  • 1991-04-17 EP EP19910906952 patent/EP0527756A1/de not_active Ceased
  • 1991-04-17 AU AU75633/91A patent/AU7563391A/en not_active Abandoned
  • 1991-04-17 WO PCT/CH1991/000091 patent/WO1992015489A1/de not_active Application Discontinuation
  • 1991-04-17 JP JP91506437A patent/JPH05508598A/ja active Pending

Patent Citations (4)

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