Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
  • G09F3/02—Forms or constructions
  • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
  • G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
  • B41M3/14—Security printing
• • 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
  • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
  • B65D75/66—Inserted or applied tearing-strings or like flexible elements
• • 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
  • B65D2211/00—Anti-theft means

Definitions

• the present invention relates to tear strips and is concerned with tear strips for applying security features to consumer goods, food packaging and the like.
• holographic Elements used as a security feature.
• a disadvantage of holograms is in general, that the special effect in low light conditions of effect loses.
• the production of holograms makes a complicated, complex manufacturing process. Especially in the production of Tear strip must precede this process and can not in the existing production processes are integrated.
• the carrier film must be this primed and coated with an embossing lacquer. Subsequently, the Embossed holographic pattern.
• the next production step then has the Metallization be performed. Only then this material can be in the usual Production process for tear strips are fed. The manufacturing process becomes thus more expensive and more complex by several steps.
• the invention is therefore a tear strip with security feature a carrier foil, on the one side a sealing layer and on the other Side, if appropriate, a release layer is applied, characterized in that that the carrier film is printed on one side with a micro-font.
• the carrier film is preferably made of cell glass, polyvinyl chloride, vinyl chloride copolymer, Vinyl chloride terpolymer, polyester, polypropylene, polypropylene copolymer, Polypropylene terpolymer, polypropylene-polyethylene copolymer, polyamide, polystyrene, Polystyrene copolymer, polystyrene terpolymer, polycarbonate, polyketone, Polymethacrylate or polymethacrylate copolymer. Particularly preferably from monoaxial oriented polypropylene or polypropylene-polyethylene copolymer.
• the carrier film with one or more polymer films with paper, a metallized polymer film, a metal foil or a vacuum coated foil laminated.
• the sealing layer is preferably a layer of self-adhesive adhesives the basis of polyacrylates or natural or artificial resins.
• the optional release layer is preferably a UV-crosslinkable Silicone coating.
• Another object of the invention is a method for producing a tear strip with security feature, in which one has a carrier film with a micro-font printed on the printing a sealant layer and on the other side of the Carrier film optionally applies a release layer.
• printed tear strips are prepared so that in a Operation a carrier sheet printed on the printing ink and a sealing medium like e.g. Apply hot melt adhesive. If necessary, will be on the other Side of the carrier still has a release coating applied to a blocking to avoid.
• a security element in the tear strip too integrate.
• the carrier film may have a thickness between 10 and 100 microns and a width between 1 and have 100 mm.
• the thickness is between 10 and 40 microns and the Width between 1.5 and 10 mm, most preferably between 1 and 5mm.
• the sealing layer may be sealing media such as e.g. Polyethylene or around act so-called hot-melt coatings, the layer thickness between 1 and 20 microns and the sealing temperature is usually above 100 ° C.
• sealing media such as e.g. Polyethylene or around act so-called hot-melt coatings, the layer thickness between 1 and 20 microns and the sealing temperature is usually above 100 ° C.
• the film back with a Equipped with release coating.
• This is preferably a silicone coating, most preferably UV-crosslinkable silicone coatings.
• the printing of the carrier film can be done in one or more colors. It comes for this any suitable for film printing process into consideration.
• the Printing in typical packaging printing processes such as offset, screen, flexo, UV flexo or gravure. Especially in offset or gravure printing, especially in gravure printing.
• the micro-typefaces are fonts whose letter size is less than 0.7mm. Especially those whose size is less than 0.3 mm. Most preferably, sizes smaller than 0.26 mm.
• the fonts can be in running direction or transversely to the running direction are carried out in such a way that the Observer of the packaged goods is able to use the font if necessary under With the help of a font magnifying aid to read.
• the writing is carried out in the running direction, most preferably as the center line of the tear strip.
• the micro-typefaces can be in both positive and negative writing to be printed. Positive fonts are obtained by the lines of the letters and Digits are printed. For negative writings, however, the lines of Letters and numbers are not printed, but only the environment of Letters printed in numbers.
• Another embodiment has normal sized fonts, i. greater than 0.7 mm, which in turn are built up from micro-writing. At the exact Inspecting the "normal" font with a strong magnifying glass or a microscope then the micro-font becomes recognizable.
• the tear strip products of the invention protected against counterfeiting. It can both hidden properties
• the colors mentioned come to fruition only by professionals and using can be detected by technical aids as well obviously recognizable qualities that allow a layman to be original Check product.
• In the first case lies the meaning of the security element therein, in the occurrence of counterfeits their lack of originality judicially demonstrated.
• the preparation of a tear strip of the structure described may be the usual Machines happen.
• the application of the release layer is done with a Mehrwalzenönstechnik and subsequent drying or curing of Layer.
• the pressure on one side of the carrier film can with the known printing machines respectively.
• a printing unit is designed for printing the micro-font.
• the sealing medium is in-line or off-line in gravure printing or by means of slot dies or other suitable method then applied to the printing.
• Another object of the invention is packaging material, the inventive Tear strip contains such as in the packaging of cigarettes, Compact Discs or films used in food.
• the next step was followed by gravure printing on the opposite side of the silicone-coated side, the corona surface being previously adjusted to a value of> 38 mN / m 2 by corona treatment.
• a commercially available pressure sensitive hot melt adhesive based on SBS copolymers and condensation resins was applied to the printing ink.
• the order quantity was 10 g / m 2 .
• the thus-finished film was cut in the following steps to 2 mm in width and wound on coils of 6000 linear meters.
• a film of cellulosic glass having a thickness of 30 ⁇ m was gravure printed and to the ink, also in intaglio printing, a hot-melt adhesive was applied whose composition consists of 25-45% ethylvinylacetate copolymer, 20-35% cyclohexanone hydrocarbon resin, 15- 25% saturated hydrocarbon resin, 5-10% ⁇ -methylstyrene hydrocarbon resins, and less than 10% oligomeric polyurethanes.
• the order quantity was 4 g / m 2 .
• the thus-finished film was cut in the following steps to 2 mm in width and wound on coils of 6000 linear meters.
• Example 2 The procedure was as in Example 1. As a pressure-sensitive adhesive, however, a commercially available acrylate dispersion was used whose solids content was about 53% and the flow time in the DIN 4 cup was 60 seconds. The coating weight was 3 g / m 2 , the aqueous dispersion was applied by gravure.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Mechanical Engineering (AREA)
• Laminated Bodies (AREA)
• Wrappers (AREA)
• Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
• Basic Packing Technique (AREA)
• Printing Methods (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=7906850

Family Applications (1)

Country Status (6)

Families Citing this family (2)

Family Cites Families (7)

• 1999
  • 1999-05-04 DE DE19920359A patent/DE19920359A1/de not_active Withdrawn
• 2000
  • 2000-04-27 DE DE50010136T patent/DE50010136D1/de not_active Expired - Fee Related
  • 2000-04-27 ES ES00109024T patent/ES2239960T3/es not_active Expired - Lifetime
  • 2000-04-27 AT AT00109024T patent/ATE294116T1/de not_active IP Right Cessation
  • 2000-04-27 DK DK00109024T patent/DK1050484T3/da active
  • 2000-04-27 EP EP00109024A patent/EP1050484B1/de not_active Expired - Lifetime
  • 2000-05-04 CN CN00118169.6A patent/CN1273200A/zh active Pending

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