EP0166967B1 - Verpackungsmaterialbahn mit einer Kunststoffolie - Google Patents

Verpackungsmaterialbahn mit einer Kunststoffolie Download PDF

Info

Publication number
EP0166967B1
EP0166967B1 EP85106635A EP85106635A EP0166967B1 EP 0166967 B1 EP0166967 B1 EP 0166967B1 EP 85106635 A EP85106635 A EP 85106635A EP 85106635 A EP85106635 A EP 85106635A EP 0166967 B1 EP0166967 B1 EP 0166967B1
Authority
EP
European Patent Office
Prior art keywords
web
cover
cover portion
packaging material
sealing surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85106635A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0166967A1 (de
Inventor
Ingemar Ohlsson
Finn Toft Madsen
Steffen Kjaerbye
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
Tetra Pak Finance and Trading SA
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 Tetra Laval Holdings and Finance SA, Tetra Pak Finance and Trading SA filed Critical Tetra Laval Holdings and Finance SA
Priority to AT85106635T priority Critical patent/ATE33472T1/de
Publication of EP0166967A1 publication Critical patent/EP0166967A1/de
Application granted granted Critical
Publication of EP0166967B1 publication Critical patent/EP0166967B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/184—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying tabs over discharge openings, e.g. over discharge openings defined by tear or score lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • 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
    • B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
    • 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
    • B65D75/52—Details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • Y10T428/24215—Acute or reverse fold of exterior component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24843—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] with heat sealable or heat releasable adhesive layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24934—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including paper layer

Definitions

  • the invention relates to a packaging material web with heat-sealable plastic film with two rows of approximately the same size, in the direction of the longitudinal center line off-center on the side and on the outer surface of each web half of cover parts made of weldable material with the plastic film.
  • Packing material webs which consist only of a plastic film and are folded over along a middle folding line to form a tube.
  • the tube of this known material web is closed on two of the three still open sides by heat sealing, with the contents, preferably liquids, e.g. B. milk or juices, filled, this filled partial bag separated from the entire tube and completely closed.
  • Such liquid bags come on the market with and without a cardboard box.
  • the end user uses casting containers which support the liquid hose.
  • the liquid tube is surrounded by this folding carton for support and is brought to the market in this form.
  • This known protective folding box usually has the shape of a cuboid and requires a relatively large amount of effort for the formation, folding and sealing of the cardboard walls or of the base and lid for the production.
  • the respective filled liquid bag must be pushed into the folding carton, which is open at least on one side, with careful handling with special devices.
  • a packaging material web with the features specified at the outset is known from DE-B-2 200 280, this web of paper or cardboard with at least one-sided thermoplastic coating having cover strips at regular intervals from one another.
  • this web is also used for the production of bags in mass production by filling and closing the bags, it is not described how the bags are to be made, from which ultimately tetrahedral packs are formed.
  • it is also irrelevant where holes in the web and the tear tabs covering them are attached to the package. In this respect, there are also no indications for the further processing of the web, in particular with regard to simple handling when filling, closing and wrapping.
  • a plastic film bag which has a cover part made of a more rigid material than the film on one or both surfaces.
  • This cover part serve as a stand to help with food, such. B. spices, potato chips or the like filled bags in an approximately vertical position and the buyer can present favorably without having to use baskets or the like to hold the bags.
  • the bags are already the end product without a material web being described in more detail. be it a flat sheet or a hose.
  • the object of the invention is to provide a packaging material web with heat-sealable plastic film, from which filling bags can be manufactured in such a way that easier handling when filling, closing and wrapping is possible, especially in mass production with a large number of pieces per unit of time.
  • the material web is a heat-sealable plastic film and folded over to form a tube shape around a longitudinal center line - is such that the two resulting web halves are superimposed on one another that on the first web half the row of stiffer material than that Existing cover parts in the area next to their longitudinal edge and on the other second web half in the area next to their fold line formed by the longitudinal center line runs longitudinally.
  • a new path is taken for the first time, namely cover parts on a plastic film - because the entire material web is a plastic film - to be attached in the form of rows in such a way that this results in a web that is inexpensive to process and with simple measures in a package. and filling machine can be processed and can be provided with a support sleeve, the manufacturing and arrangement costs of which are considerably lower than in the known folding boxes. If a tube is formed from the packaging material web according to the invention, the first stage for this is the folding around the longitudinal center line of the film web such that there are two web halves.
  • cover parts are assigned to one another in such a way that identical cover parts are provided in the direction transverse to the longitudinal path.
  • this cross line also runs through the center of the cover part of the other row.
  • cover parts or the gaps between the cover parts are appropriately opposite. This makes it possible to place transverse sealing seams in the area of the gaps between the cover parts in such a way that corresponding plastic film bags result.
  • one side is formed by a piece of the fold line which connects the two web halves to one another, at the opposite end (lid or bottom side) a piece of the longitudinal weld seam of the tube of the plastic material web forms the end and the two above-mentioned transverse sealing seams form the respective longitudinal closure of the elongated bag.
  • the cover or bottom ends of the resulting filling bag are not, as mentioned above, formed directly by the fold line on the one hand and the piece of the longitudinal tube seam on the other hand but by foil surfaces which are arranged next to it .
  • the advantage of the packaging material web described above with the row of cover parts in the side areas or in addition to the boundary lines of the respective web half lies in the favorable transport option from the supply in a filling or packaging machine through the welding stations to the final processing. Due to the eccentric arrangement of the rows of cover parts according to the invention, the material web can namely be stored flat in stock and transported and treated via rollers like a normal material web, although cover parts are sealed.
  • the packaging material web according to the invention is stored in a zigzag shape (not in roll form), it being as easy to remove such a finished packaging material web as if the material web had been wound on a roll.
  • the latter is unsuitable for the sealed cover parts on the film web because of the different material thicknesses.
  • each cover part is essentially round or polygonal, preferably circular, and consists of cardboard or paper coated with plastic to form a cover or bottom of a tubular cross-section corresponding to the cross-section.
  • plastic coating can be made very economical and thin, especially if the liquid itself is held in a plastic bag.
  • a liquid pack of the type described should be optimal, ie. H. be completely filled.
  • the filling bag made of plastic film should lie snugly on both the side surfaces and the lid and bottom of the packaging. All of these advantages are achieved with a correspondingly designed machine, provided that the packaging material web of the type described above is used.
  • the cover parts in the rows on the web halves can have the shape mentioned above. It is particularly expedient here if each cover part is connected to the film web via at least one of the two parallel rows via a sealing surface arranged eccentrically to the cover part. If the entire surface of the cover part lies on the web surface that is preferably flat during transport, the sealing surface can be arranged at any point within the surface of the cover part.
  • the eccentric arrangement of the sealing surface with respect to the center of the cover part offers the further advantage of an inexpensive opening device with the simplest of means.
  • an inner cover strip overlapping the sealing surface on the cover part, is welded to both between the film web and cover part.
  • an inner cover strip is expediently designed, there are favorable opening possibilities, sharp pouring edges and good pouring possibilities with the inflow of air at the right places to avoid chuckling when pouring out.
  • the creation of an exact pouring hole is particularly facilitated if the inner cover strip has a hole located within the sealing surface, through which a central partial sealing surface is formed directly between the cover part and the film web.
  • the above-mentioned sealing surface between the cover part and the film web is thus divided into a central partial sealing surface, which represents the direct connection between the cover part and the film web, and a ring sealing surface surrounding it, in the area of which the inner cover strip lies between the actual outer cover part itself and the film web.
  • a central partial sealing surface which represents the direct connection between the cover part and the film web
  • a ring sealing surface surrounding it in the area of which the inner cover strip lies between the actual outer cover part itself and the film web.
  • the opening process with a cover part, which is attached to the material web can be designed particularly favorably if, on the circumference of the cover part, a gripping tab protrudes radially outward next to the sealing surface and two cutting lines running parallel to one another at a distance from each other, in addition to a connecting line between the gripping tab tip and Center of the cover part are attached to form a tear strip in the cover part.
  • the arrangement of a gripping tab not only facilitates the opening process for the end user but also does not interfere with the desired properties of the packaging material web according to the invention, because on the web halves which are essentially flat during transportation, protrusions on the circumference of the respective cover part do not in any way interfere, neither when folding, folding, Welding, separating and filling.
  • FIG. 6 to 8 show an exploded, more specific embodiment, showing further details of a view according to FIG. 5, FIG. 6 showing the film web, FIG. 7 the inner cover strip and FIG. 8 the actual cover part in the form of the cover.
  • FIG. 1 The packaging material web is shown in FIG. 1 in a flat state and consists of a heat-sealable plastic film with welded-on cover parts 1.
  • FIGS. 1 and 3 show the longitudinal center line 2 of the film web, generally designated 3, which is used to form a tube shape around the longitudinal center line 2 in the manner shown in FIG State of Figures 2 and 4 can be folded over that there are two web halves 4 and 5.
  • first web half 4 is delimited on the one hand by the folding line formed by the longitudinal center line 2 and the free longitudinal edge 6 on the other hand.
  • the other second web half 5 is also delimited by the longitudinal center line 2 and the outer free longitudinal edge 7.
  • the cover parts 1 are attached in the form of rows with the same longitudinal distance L between the cover parts 1 off-center on the side of each web half 4 and 5. You can also see a distance a (Fig. 2) between the circumference of a cover part 1 and the edge of the web half, here the longitudinal center line 2 of the first web half 4. If the total width B of the packaging material web 3 is 56 cm, the distance A of the two rows with cover parts 1 about 28 cm, the distance L of two cover parts 1 to each other in the direction of the rows is then 13 cm and the mentioned edge distance a is 0.8 cm.
  • the cover parts 1 shown in Figures 1, 2 and 5 appear oval, because they are circular in plan view.
  • the cover part 1 located in the area V in FIG. 2 under the lower web half 5 is to form a cover in the later packing and therefore has the opening device.
  • This cover part is shown more clearly in FIGS. 5 to 8.
  • the lower second web half 5 can be seen in FIGS. 5 and 6, which is delimited on the left by the longitudinal center line 2 and on the right by the free longitudinal edge 7, while the ends are broken off in the longitudinal direction of the web and are not labeled.
  • This sealing surface is composed of two partial surfaces, namely the central partial sealing surface 17 and the outer sealing surface 18 surrounding it in a ring.
  • FIGS. 6 to 8 it is clearly shown that the viewer of FIG. 5 passes through the upper film web 5 onto the inner one Cover strip 8 and then looks at the cover part 1 arranged underneath.
  • the inner cover strip 8 has a hole 9 in the middle, through which the central partial sealing surface 17 comes into contact and connects directly to the cover part in the central hatched area 16 of FIG. 8 when the film web 5 is sealed onto the actual material layer of the cover part 1.
  • a gripping tab 10 is shown radially outward (to the right in front) next to the sealing surface 14 in FIGS.
  • a gripping tab 10 is shown radially outward (to the right in front) next to the sealing surface 14 in FIGS.
  • points 11 where the Greifla cal 10 passes into the circumference of the cover part 1 begin in the middle region of the cover part 1 two parallel cutting lines 12 and 13, which run at a distance b from each other, which is also the distance between the two points 11, and the outside next to a connecting line, which is not shown but only intended and is to be thought between the gripping tab tip 15 and the center 20 of the cover part 1.
  • the inner cover strip 8 is sealed on its curved outer part (on the right in FIG. 7) along the weld seam 21 on the front edge of the tube, not shown, and on the inside via the weld seams 22, which run a short distance outside alongside the parallel cutting lines 12 and 13 of the cover part 1 welded.
  • cover part 1 optionally with a welded-on inner cover strip 8, whereby cover parts 1 can be placed on film webs 4 and 5 in bulk quantities, which form a packaging material web that is easy to deflect, store and process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Laminated Bodies (AREA)
EP85106635A 1984-06-02 1985-05-30 Verpackungsmaterialbahn mit einer Kunststoffolie Expired EP0166967B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85106635T ATE33472T1 (de) 1984-06-02 1985-05-30 Verpackungsmaterialbahn mit einer kunststoffolie.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3420622A DE3420622A1 (de) 1984-06-02 1984-06-02 Verpackungsmaterialbahn mit einer kunststoffolie
DE3420622 1984-06-02

Publications (2)

Publication Number Publication Date
EP0166967A1 EP0166967A1 (de) 1986-01-08
EP0166967B1 true EP0166967B1 (de) 1988-04-13

Family

ID=6237488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85106635A Expired EP0166967B1 (de) 1984-06-02 1985-05-30 Verpackungsmaterialbahn mit einer Kunststoffolie

Country Status (4)

Country Link
US (1) US4632854A (enrdf_load_stackoverflow)
EP (1) EP0166967B1 (enrdf_load_stackoverflow)
AT (1) ATE33472T1 (enrdf_load_stackoverflow)
DE (2) DE3420622A1 (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200280B2 (de) * 1971-01-07 1979-08-30 Tetra Pak International Ab, Lund (Schweden) Bahnförmiges Verpackungsmaterial und Verfahren zu dessen Herstellung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2259866A (en) * 1939-06-03 1941-10-21 Stokes & Smith Co Method of making containers
US2260064A (en) * 1939-08-16 1941-10-21 Stokes & Smith Co Method of making containers
GB927703A (en) * 1960-03-10 1963-06-06 Valer Flax Improvements in and relating to packaging containers made of heat-sealable material
US3659777A (en) * 1969-06-30 1972-05-02 Takahi Kanada Reinforced package
FR2102613A5 (enrdf_load_stackoverflow) * 1970-08-06 1972-04-07 Kuster Rene
US3744383A (en) * 1971-12-13 1973-07-10 Crown Zellerbach Corp Banded plastic bag manufacturing method and apparatus
US4063641A (en) * 1975-03-05 1977-12-20 Philip Morris Industrial Incorporated Two-side legible packaging film and package made therefrom

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200280B2 (de) * 1971-01-07 1979-08-30 Tetra Pak International Ab, Lund (Schweden) Bahnförmiges Verpackungsmaterial und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
ATE33472T1 (de) 1988-04-15
DE3420622A1 (de) 1985-12-05
DE3420622C2 (enrdf_load_stackoverflow) 1993-07-15
US4632854A (en) 1986-12-30
EP0166967A1 (de) 1986-01-08
DE3562124D1 (en) 1988-05-19

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