EP0372348B1 - Emballage pour denrée alimentaire en tranches, en particulier pour tranches de fromage - Google Patents

Emballage pour denrée alimentaire en tranches, en particulier pour tranches de fromage Download PDF

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Publication number
EP0372348B1
EP0372348B1 EP89121862A EP89121862A EP0372348B1 EP 0372348 B1 EP0372348 B1 EP 0372348B1 EP 89121862 A EP89121862 A EP 89121862A EP 89121862 A EP89121862 A EP 89121862A EP 0372348 B1 EP0372348 B1 EP 0372348B1
Authority
EP
European Patent Office
Prior art keywords
film
packaging
heat
cheese
food
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 - Lifetime
Application number
EP89121862A
Other languages
German (de)
English (en)
Other versions
EP0372348A1 (fr
Inventor
Lothar Sieben
Heinz-Werner Rohrka
Günter Koslowski
Rolf Müller
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.)
Dow Produktions und Vertriebs GmbH and Co oHG
Original Assignee
Hoechst AG
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
Priority claimed from DE8815034U external-priority patent/DE8815034U1/de
Priority claimed from DE8908628U external-priority patent/DE8908628U1/de
Application filed by Hoechst AG filed Critical Hoechst AG
Priority to AT8989121862T priority Critical patent/ATE105253T1/de
Publication of EP0372348A1 publication Critical patent/EP0372348A1/fr
Application granted granted Critical
Publication of EP0372348B1 publication Critical patent/EP0372348B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • B65D85/76—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials for cheese
    • 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
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/20—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • 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

Definitions

  • the invention relates to a packaging suitable for disk-shaped foods, such as cheese slices, with a substantially rectangular surface, made of a film which is wrapped around the food to be packaged as a flat tube and completely encloses it, the two longitudinal axial edge zones of the film overlapping, are connected to one another by a strip-shaped heat seal layer in the vicinity and parallel to an edge of the film and the heat seal layer consists essentially of heat sealable olefin copolymer.
  • Patent Abstracts of Japan, vol. 9339, dated December 25, 1985, describes a device with which a strip of a heat-sealable resin is continuously bonded to a film material.
  • a heat seal layer is applied in strips in the vicinity and parallel to an edge of the film material, the heat seal layer essentially consisting of heat-sealable olefin copolymer, and then the other edge of the film material is placed on the strip-shaped heat seal layer and connected to it under pressure and heat.
  • the film material is formed into a cylinder, which is cut to a predetermined length.
  • the film Form the tube and pour the heated, viscous cheese mass into the tube.
  • the filled tube is flattened and the ribbon-shaped strand of cheese is divided by transverse web-like zones into individual, still connected, filled sections.
  • the ribbon-shaped film-cheese tube is passed through a water bath and the outside of the film is then blown with air to remove the water that is still adhering.
  • the tube is then divided into individually packaged cheese slices in the area of the transverse web-like zones and the individual packs are stacked.
  • polyester films have been used for the production of packaging of this type, which were initially provided with a heat-sealable coating over the entire surface, and then printed on their coated surface in a further step.
  • This process has the disadvantage that it requires a number of process steps and is therefore very complex.
  • the object of the invention is to improve the known packaging so that the residual moisture still adhering to the coefficient of friction of the packaging surface, even if it is printed, does not deteriorate, but practically withstands the comparison to the dry condition of the packaging surface.
  • the outside of the packaging has a coating of an organosilicon compound, in particular of polydialkylsiloxane, and that the film is optionally printed outside of the heat seal layer.
  • the film suitable for producing the packaging consists of a single-ply or a coextruded multilayer polyester film, in particular a polyethylene terephthalate film, which is oriented by biaxial stretching and fixing.
  • Their density is usually less than 1.4 g / cm3, their thickness is in the range from 8 to 30, in particular 10 to 23, micrometers.
  • Films can likewise consist of transparent or opaque, single-ply or of a coextruded multilayer, biaxially stretched polyolefin film, the base layer essentially consisting of propylene polymers and the cover layers on one or both sides of olefin polymers, in particular propylene polymers.
  • Their density is between 0.55 and 0.91 g / cm3, their thickness in the range of 8 to 50, in particular 10 to 40 micrometers.
  • the advantages are achieved that the packaging is easier to manufacture, the sealing temperature is relatively low, so that even a short exposure time of the sealing tools creates sufficient adhesion and sealed packaging is tightly closed, but can still be easily opened by hand.
  • the heat-sealable olefin copolymer preferably comprises ethylene and optionally propylene and / or butylene units and is applied to the film in aqueous dispersion, the solids content of the dispersion usually being 40 to 70% by weight, based on the total weight of the dispersion.
  • a strip-like coating is obtained from the olefin copolymer.
  • the thickness of the Layer depends on the desired seal seam strength. A layer thickness of 1 to 5 micrometers is usually applied.
  • the strip-shaped, heat-sealable layer extends in the vicinity and parallel to an edge zone of the film web and usually has a width of 1 to 10 mm, in particular 2 to 4 mm.
  • the packaging has on its outside a water-repellent layer based on organosilicon compounds, preferably polydialkylsiloxane, the alkyl radicals in particular having 1 to 4 carbon atoms.
  • the polydialkylsiloxane is particularly preferably a polydimethylsiloxane.
  • the polydialkylsiloxane, in particular polydimethylsiloxane has a kinematic viscosity of 103 to 105, in particular 5,000 to 50,000 mm2 / s (25 ° C).
  • the application weight of the component is preferably between 0.01 and 20 g / m2, in particular 0.05 to 1 g / m2.
  • DE-OS 35 09 384 has already disclosed a polyolefin film in which one sealable surface layer contains polydialkylsiloxane incorporated and the other sealable surface layer has polydialkylsiloxane only on the outer surface, and the multilayer film of DE-OS 35 17 795 also contains at least in one of the two non-sealable surface layers is a polydialkylsiloxane. Both films are also to be used for packaging purposes.
  • neither publication can give the person skilled in the art an indication of the solution to the present problem, namely to prevent the insufficiently dried packaging from blocking.
  • the application of the strip-like layer of heat-sealable olefin copolymer, the printing and, if appropriate, the full application of the additive component for water-repellent impregnation and for improving the coefficient of friction in the form of polydialkylsiloxane take place simultaneously in one operation, so that one or two further operations are saved.
  • the silicon-organic compound is expediently first applied to the film and immediately afterwards the film is provided with the sealable strip and printed.
  • the application of the heat-sealable polymer and the organosilicon compound and the printing on the film surface are expediently carried out on the same gravure or flexographic printing system.
  • the goods to be packed e.g. B. a rectangular cheese slice
  • a tube is usually first formed from the flat film on a vertical form-fill and seal machine and the longitudinal-axial seam is formed along the strip-shaped sealing layer.
  • the food is filled into the tube in a pasty form from above.
  • the filled tube is flattened and compressed in transverse web-like zones until the pasty food between the two layers of film is almost completely removed is.
  • the flat film tube is cut at right angles to the sealed seam in the web-like zones.
  • the packaging is closed only by pressing the film layers lying one above the other, the film layers, however, being bonded to one another by small amounts of intermediate food which has solidified as a result of the cooling.
  • the following example illustrates the improved surface properties and the heat sealability of the films to be used for packaging.
  • a single-layer, biaxially stretch-oriented polyethylene terephthalate film (PETP) with a thickness of 12 micrometers and a coextruded three-layer, non-sealable polypropylene film (BOPP) with a thickness of 15 micrometers are flexo-printed with polydimethylsiloxane, kinematic viscosity 30,000 mm2 / s (25 ° C) , fully coated; immediately thereafter, an aqueous dispersion of ethylene-propylene copolymer is applied in strip form in flexographic printing and the film surface is provided with a colored printed image by flexographic printing. The application of the two connections and the printing take place in the same printing press.
  • PETP film For comparison, another pattern made of PETP film is printed analogously and with a full-surface coating of heat-sealable vinylidene chloride copolymer (PVDC), application in aqueous dispersion. Coating with polydimethylsiloxane is not necessary.
  • PVDC heat-sealable vinylidene chloride copolymer
  • the PETP and BOPP films After being blown with air, the PETP and BOPP films had less water adhesion to the film surface than the PVDC-coated PETP film.
  • test strips 10 cm long and 15 mm wide are cut from the three samples and sealed against a test strip made of uncoated polyester and polypropylene film at 120 ° C and 5 bar pressure for 0.5 s.
  • the force required is around that Peel off the polyester film and polypropylene film with the ethylene copolymer layer from the uncoated film sealed against it, 0.5 to 0.8 N / 15 mm.
  • the single figure shows an embodiment of the packaging in perspective.
  • a rectangular cheese slice 9 is completely enveloped by the tight-fitting flat film 1.
  • the overlapping edge zones 2, 3 of the film 1, which is bent in a tube shape around the cheese slice, are connected to one another in the area of the strip-shaped heat seal layer 4 made of ethylene copolymer, the heat seal layer 4 extends in the vicinity and parallel to the edge 12 of the film 1.
  • a printed field is shown schematically shown and with 13 the full surface coating with polydialkylsiloxane.
  • the printing ink is on the layer of polydialkylsiloxane.
  • web-like regions 6, 7 extend in the right and left of the packaged cheese slice, in which the two layers of film 10, 11 lying one above the other only adhere to one another through an extremely thin cheese layer 8 enclosed between them.
  • the cheese layer is much thicker, usually a few millimeters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Wrappers (AREA)
  • Dairy Products (AREA)
  • Laminated Bodies (AREA)

Claims (2)

  1. Emballage utiiisable pour denrées alimentaires en tranches telles que des tranches de fromage, présentant une surface essentiellement rectangulaire, réalisé à partir d'une pellicule enroulée sous forme d'un tuyau souple plat autour de la denree alimentaire à emballer et enveloppant entièrement celle-ci, les deux zones marginales axiales longitudinales de la pellicule se recouvrant, étant reliées l'une à l'autre par l'intermédiaire d'une couche de thermoscellement en forme de bande disposée à proximité d'un bord de la pellicule et parallèlement à celui-ci, et la couche de thermoscellement étant constituée pour l'essentiel d'un copolymère d'oléfines thermosoudable,
    caractérisé en ce que la face extérieure de l'emballage présente un revêtement constitué d'un composé organique à base de silicium, notamment de polydialkyisiloxane, et en ce que la pellicule est imprimée, le cas échéant, en dehors de la couche de thermoscellement.
  2. Emballage selon la revendication 1, caractérisé en ce que la pellicule est constituée de polyester, notamment de polyethylénetéréphtalate, ou d'une polyoléfine, notamment de polymères de propylène.
EP89121862A 1988-12-02 1989-11-27 Emballage pour denrée alimentaire en tranches, en particulier pour tranches de fromage Expired - Lifetime EP0372348B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8989121862T ATE105253T1 (de) 1988-12-02 1989-11-27 Verpackung fuer scheibenfoermige lebensmittel, insbesondere kaesescheiben.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8815034U DE8815034U1 (fr) 1988-12-02 1988-12-02
DE8815034U 1988-12-02
DE8908628U 1989-07-15
DE8908628U DE8908628U1 (fr) 1989-07-15 1989-07-15

Publications (2)

Publication Number Publication Date
EP0372348A1 EP0372348A1 (fr) 1990-06-13
EP0372348B1 true EP0372348B1 (fr) 1994-05-04

Family

ID=25953838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121862A Expired - Lifetime EP0372348B1 (fr) 1988-12-02 1989-11-27 Emballage pour denrée alimentaire en tranches, en particulier pour tranches de fromage

Country Status (4)

Country Link
EP (1) EP0372348B1 (fr)
DE (1) DE58907611D1 (fr)
DK (1) DK606689A (fr)
ES (1) ES2051967T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4202727A1 (de) * 1992-01-31 1993-08-05 Hoechst Ag Folie fuer die verpackung von scheibenfoermigen lebensmitteln
US6010724A (en) * 1997-12-23 2000-01-04 Wm. Wrigley Jr., Company Packaged chewing gum and methods for packaging chewing gum
DE29917001U1 (de) * 1999-08-10 2000-01-05 Campina Melkunie Bv Wiederverschließbare Verpackung
NL2023278B1 (nl) * 2019-06-07 2021-01-11 Berkhout Langeveld B V Verpakking voorzien van een levensmiddel en halffabricaat

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1393407A (fr) * 1964-01-28 1965-03-26 Conditionnement en matière plastique
DE3517795A1 (de) * 1985-05-17 1986-11-20 Hoechst Ag, 6230 Frankfurt Nicht siegelbare, biaxial orientierte mehrschichtfolie aus propylenpolymeren, verfahren zur herstellung der folie und ihre verwendung

Also Published As

Publication number Publication date
ES2051967T3 (es) 1994-07-01
DK606689D0 (da) 1989-12-01
DE58907611D1 (de) 1994-06-09
EP0372348A1 (fr) 1990-06-13
DK606689A (da) 1990-06-03

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