Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
  • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
  • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
  • D21H21/42—Ribbons or strips
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
  • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
  • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
  • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
  • D21H21/48—Elements suited for physical verification, e.g. by irradiation
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
  • D21H27/10—Packing paper
• • 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
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
  • Y10T156/1121—Using vibration during delaminating
• • 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
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
  • Y10T156/1153—Temperature change for delamination [e.g., heating during delaminating, etc.]

Definitions

• the invention relates to a method for producing a partially metallized carrier substrate.
• Partially metallized carrier substrates are optionally used after appropriate assembly as security elements in particular in value documents, data carriers, packaging and the like but also as decorative elements.
• a method for the production of a selectively metallized film wherein a solvent-soluble paint application is applied to a carrier substrate in a first step on one or both sides of the carrier substrate, in a second step this layer by means of an inline plasma, corona or flame process is treated and in a third step, a layer of a material to be structured is applied, which layer may consist of metals, metal compounds, alloys or insulators, whereupon in a fourth step, the paint application by means of a solvent, optionally combined with a mechanical action removed becomes.
• An individualization of the partial metallization is not provided and can only take place in a further method step, for example by means of a laser treatment, by means of which the metallization is removed in a defined manner.
• the object of the invention was to provide a method for producing a partially metallized carrier substrate, in which a simple individualized partial metallization can be produced directly.
• Carrier substrates are, for example, carrier films, preferably flexible transparent plastic films, for example made of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC in question.
• the carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 5 to 200 .mu.m, particularly preferably 5 to 50 .mu.m.
• metal foils for example Al, Cu, Sn, Ni, Fe or stainless steel foils having a thickness of 5-200 ⁇ m, preferably 10 to 80 ⁇ m, particularly preferably 20-50 ⁇ m, may also serve as the carrier substrate.
• the films can also be surface-treated, coated or laminated, for example, with plastics or painted.
• carrier substrates also paper or composites with paper, for example, composites with plastics with a grammage 20-500 g / m 2, preferably 40-200 g / m 2. be used.
• woven or nonwovens such as continuous fiber webs, staple fiber webs and the like, which may optionally be needled and / or calendered, can be used as the carrier substrates.
• fabrics or webs of plastics such as PP, PET, PA, PPS and the like, but it can also be woven or nonwovens made of natural, optionally treated fibers, such as viscose fibers are used.
• the nonwovens or fabrics used have a weight per unit area of about 20 g / m 2 to 500 g / m 2 . If necessary, the nonwovens or fabrics must be surface-treated.
• a fusible digital printing ink in the form of the desired later recesses in the metallic layer is then partially applied to the carrier substrate by means of a digital printing method.
• a transparent ink can be used, thereby avoiding that possibly residues of the ink are visible at the edge of the recesses.
• a digital ink is used which melts at about 90 to 160 ° C, preferably 100 - 120 ° C.
• the application of the ink can be made individualized.
• the application of the digital ink can be individualized and applied in the form of in the form of patterns, lines, geometric figures, characters, letters, numbers, a grid and the like.
• This layer consists of a metal, a metal compound, or an alloy.
• a metal layer layers of Al, Cu, Fe, Ag, Au, Cr, Ni, Zn and the like are suitable.
• suitable metal compounds are oxides or sulfides of metals, in particular TiO 2 , Cr oxides, ZnS, ITO, ATO, FTO, ZnO, Al 2 O 3 or silicon oxides.
• Suitable alloys are, for example, Cu-Al alloys, Cu-Zn alloys and the like.
• This functional layer may be applied by known methods such as sputtering, sputtering, printing (gravure, flexo, screen, digital printing and the like), spraying, electroplating and the like.
• the thickness of the functional layer is 0.001 to 50 ⁇ m, preferably 0.1 to 20 ⁇ m.
• the metallized carrier substrate is then heated so that the applied digital ink melts.
• the heating may be carried out by passing over a heatable roll, passing through a drying tunnel, heating by means of an IR radiator and the like.
• liquid digital ink together with the overlying in these areas metallic layer by mechanical Exposure, for example, with a stripping roller, a fabric and the like or removed by ultrasonic treatment.
• further functional layers with optical, optically active, magnetic and / or electrically conductive properties can also be applied to the carrier substrates or be present thereon before the individualized partial metallization.
• the carrier substrates produced according to the invention if appropriate after appropriate fabrication (for example into threads, strips, patches or other formats), therefore, serve as security features in data carriers, in particular value documents such as identity cards, cards, banknotes or labels, seals and the like, but also in packaging material for sensitive goods such as pharmaceuticals, cosmetics, data carriers, electronic components and the like.

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

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ID=34937873

Family Applications (1)

Country Status (2)

Citations (8)

Family Cites Families (3)

• 2005
  • 2005-07-19 EP EP05015612A patent/EP1746208A1/fr not_active Withdrawn
• 2006
  • 2006-07-10 US US11/482,907 patent/US20070044912A1/en not_active Abandoned

Patent Citations (8)

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