EP2250536A1 - Method for providing matrices for embossing polymeric films and the like, particularly for imprinting microscopic identification strings and images, matrix according to the method, and polymeric film embossed by means of the matrix - Google Patents
Method for providing matrices for embossing polymeric films and the like, particularly for imprinting microscopic identification strings and images, matrix according to the method, and polymeric film embossed by means of the matrixInfo
- Publication number
- EP2250536A1 EP2250536A1 EP08872273A EP08872273A EP2250536A1 EP 2250536 A1 EP2250536 A1 EP 2250536A1 EP 08872273 A EP08872273 A EP 08872273A EP 08872273 A EP08872273 A EP 08872273A EP 2250536 A1 EP2250536 A1 EP 2250536A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- matrix
- flat plate
- embossing
- film
- pulsed
- 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.)
- Ceased
Links
Classifications
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- 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
- B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
- B65D15/24—Connections between walls
-
- 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
- B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
- B65D15/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums
- B65D15/10—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of metal
- B65D15/14—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of metal with end walls made of plastics material
-
- 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0235—Removable lids or covers with integral tamper element
- B65D43/0277—Removable lids or covers with integral tamper element secured by rotation before removal of the tamper element
- B65D43/0279—Removable lids or covers with integral tamper element secured by rotation before removal of the tamper element inside a peripheral U-shaped channel in the mouth ot the container
-
- 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0235—Removable lids or covers with integral tamper element
- B65D43/0277—Removable lids or covers with integral tamper element secured by rotation before removal of the tamper element
- B65D43/0281—Removable lids or covers with integral tamper element secured by rotation before removal of the tamper element only on the inside, or a part turned to the inside, of the mouth of the container
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00064—Shape of the outer periphery
- B65D2543/00074—Shape of the outer periphery curved
- B65D2543/00092—Shape of the outer periphery curved circular
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00296—Plastic
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00453—Contact between the container and the lid in a peripheral U-shaped channel of the container
- B65D2543/00462—Contact between the container and the lid in a peripheral U-shaped channel of the container peripheral U-shaped channel of the lid
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00453—Contact between the container and the lid in a peripheral U-shaped channel of the container
- B65D2543/00472—Skirt
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
- B65D2543/00518—Skirt
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00564—Contact between the container and the lid indirect by means of a gasket or similar intermediate ring
Definitions
- the present invention relates to a method for providing matrices for embossing polymeric films and the like, particularly for imprinting microscopic identification strings and images: such coding strings and images are normally imprinted on polymeric films for holographic or microscopic identification of the codes or of the information that they represent.
- the present invention also relates to the matrix according to the method and to the polymeric film embossed by means of such matrix.
- the dot-matrix technique consists in providing a matrix of diffraction gratings with a size on the order of tens of microns, written in succession with focused laser beams. Automated control of the orientation of the gratings allows to obtain various kinetic effects, such as expansions and contractions, rotations or fading.
- the holograms thus produced are characterized by a corrugated surface, which is constituted by a set of spots, each of which produces, in preset ways, the diffraction of incident light.
- Dot-matrix security holograms are characterized by extremely simple production and therefore low manufacturing and application costs. Security is ensured on three levels: the first level is constituted by the graphics and by the optical characteristics that are perceived with the naked eye, which cannot be replicated perfectly and, in the case of unsophisticated imitations, can be recognized by a careful observer; the second level is represented by hidden features (microscopic graphic patterns, fluorescent details, et cetera) in the graphics, which are not visible to the naked eye but are revealed by simple tools (magnifying lenses, UV lamps, et cetera); finally, the third level consists of the unique microscopic structure of the holographic pattern, for which authenticity can always be established by laboratory comparison with the original print master.
- the first level is constituted by the graphics and by the optical characteristics that are perceived with the naked eye, which cannot be replicated perfectly and, in the case of unsophisticated imitations, can be recognized by a careful observer
- the second level is represented by hidden features (microscopic graphic patterns, fluorescent details,
- the first one is obviously the weakest, since the end user is unlikely to be able to perceive the difference between the appearance of the original hologram and the counterfeit one.
- the presence of second-level security characteristics makes hologram counterfeiting much more difficult and expensive; of course, the presence of these characteristics forces the organization that uses them to have some kind of control network along the distribution of the goods or documents.
- the aim of the present invention is to provide a method for manufacturing matrices for embossing polymeric films and the like, particularly for imprinting microscopic identification strings and images, that is simple to perform and suitable for large production runs.
- an object of the present invention is to provide a matrix that is suitable for the faithful transfer of the identification strings and images provided on its surface onto polymeric films by means of simple industrial processes.
- Another object of the present invention is to provide a polymeric film that is embossed by means of the matrix according to the method that has a low cost and high quality and fidelity of the identification strings and images that are present on its surface.
- Another object of the present invention is to provide a method for providing matrices for embossing polymeric films and the like, a matrix according to the method, and an embossed polymeric film that have a low cost, are relatively simple to provide in practice, and are safe in application.
- the present method for providing matrices for embossing polymeric films and the like, particularly for imprinting microscopic identification strings and images which consists of the following steps: A) providing a uniform background diffraction grating on a flat plate by means of a standard holographic technique; B) subjecting the flat plate to at least one pulsed and localized energy beam by means of a procedure comprised among ablation, vaporization and melting of portion of material that constitutes the plate in the neighborhood of the at least one point of incidence of the beam; C) repeating the exposure to pulsed and localized energy beams according to a sequence of consecutive dots arranged in the configuration of the image of the element to be imprinted.
- FIG. 1 is a block diagram of the method according to the invention.
- Figure 2 is a plan view of a matrix obtained by means of the method according to the invention.
- Figure 3 is a schematic perspective view of the imprinting of a graphic element on polymeric film on the part of a matrix obtained by means of the method according to the invention. Ways of carrying out the invention
- the reference numeral 1 generally designates a method for providing matrices for embossing polymeric films and the like, particularly for imprinting microscopic identification strings and images.
- the method 1 consists of a sequence of steps, in which a first step A provides a uniform background diffraction grating 5 on a flat plate 6 by means of a standard holographic technique.
- the uniform diffraction grating 5 generally can be described as a surface that is corrugated so that the fraction of the surface that produces light diffraction is greater than 80% of the total surface, and so that the characteristic diffraction angle for each wavelength of the incident light does not vary by more than 10% for distances of 50 microns between points of incidence; the possibility to apply the method 1 according to the invention also to applications in which the characteristics of the grating are not comprised within the above-mentioned intervals is in any case not excluded.
- the plate 6 is conveniently constituted, at least partly, by metallic material or by a metallic alloy, in order to make the method 1 according to the invention particularly effective and simple in terms of execution.
- the flat plate 6 can be constituted by a nickel lamina whose thickness can vary between 10 and 1000 microns (preferably in the range comprised between 50 and 500 microns).
- uniform grating 5 is understood to mean that the optical properties thereof do not vary significantly for a length at least equal to the spacing between diffracting and reflecting regions that are intended to be provided with the method 1.
- a second step B which entails subjecting the flat plate 6 to at least one pulsed and localized energy beam for the ablation and/or vaporization and/or melting of a portion of material that constitutes the plate 6 in the neighborhood of the point of incidence of such beam.
- Ablation and/or vaporization and/or melting if the energy beam is constituted by a pulsed micro laser beam, can be identified physically as the region of the material that is transformed as a consequence of the interaction of such material with the beam.
- the pulsed and localized energy beam is a pulsed laser beam with a beam diameter of substantially less than 50 microns: more specifically, optimum results are obtained with beams having a diameter comprised between 1 and 10 microns.
- step B for subjecting the flat plate 6 to at least one pulsed and localized energy beam it is convenient to perform an adjustment which optionally provides for presetting the duration of the pulse, the number of pulses and the energy of each individual pulse. These adjustments and presets are performed as a function of the material that constitutes the plate 6 and of the desired matter ablation parameters.
- a last third step C of the method 1 imposes the repetition of the exposure (described in step B) to pulsed and localized energy beams according to a sequence of consecutive dots arranged along the configuration of an element to be imprinted 4.
- the result obtained by applying the method 1 to a flat plate 6 is a matrix 2 that comprises the flat plate 6 provided, on at least one of its surfaces, with a uniform background diffraction grating 5 and has, on the grating 5, regions that lack roughness and are contoured and distributed like the element to be imprinted 4 with the matrix 2 on a respective polymeric
- the plate 6 is substantially made of metallic material, either in the pure state or as an alloy (although the alternative use of composite materials, ceramic materials, glass materials, silicon wafers and multilayer combinations of different materials is predictable): for example, it has been found that excellent results are achieved with nickel laminas, having thicknesses comprised between 10 and 1000 microns, such thicknesses being preferably chosen within the range from 50 to 500 microns.
- the regions without embossing are constituted by a plurality of substantially contiguous areas.
- Such regions face each other and are arranged so as to provide a contour that corresponds to the element to be imprinted 4.
- the embossed polymeric film 3 obtained by means of the matrix 2 also comprises, in at least one of its portions, a surface embossing, which is complementary to the one that constitutes the uniform background of the flat plate 6, and at least one neighborhood without embossing, which is complementary to the corresponding regions of the flat plate 6 that represent the element to be imprinted 4.
- the film 3 is obtained by transferring the surface characteristics of the matrix 2 on one film 3 that is not processed, according to the method known as "roll to roll" embossing.
- the film 3, at the end of the transfer process has the same optical characteristics as the matrix 2 by means of which such transfer was applied.
- the film 3 is obtained by transferring the surface characteristics of the matrix 2 onto one unprocessed film 3 according to the method known as flat embossing. In this case also, the film 3 has the same optical characteristics as the corresponding matrix 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBO20080089 ITBO20080089A1 (en) | 2008-02-11 | 2008-02-11 | PROCEDURE FOR THE REALIZATION OF MATRICES FOR THE EMBOSSING OF POLYMERIC AND SIMILAR FILMS, PARTICULARLY FOR THE IMPRESSION OF IMAGES AND IDENTIFICATION STRINGS OF MICROSCOPIC DIMENSIONS, MATRIX ACCORDING TO PROCEDURE AND GOF POLYMER FILM |
PCT/EP2008/065368 WO2009100784A1 (en) | 2008-02-11 | 2008-11-12 | Method for providing matrices for embossing polymeric films and the like, particularly for imprinting microscopic identification strings and images, matrix according to the method, and polymeric film embossed by means of the matrix |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2250536A1 true EP2250536A1 (en) | 2010-11-17 |
Family
ID=40291411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08872273A Ceased EP2250536A1 (en) | 2008-02-11 | 2008-11-12 | Method for providing matrices for embossing polymeric films and the like, particularly for imprinting microscopic identification strings and images, matrix according to the method, and polymeric film embossed by means of the matrix |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2250536A1 (en) |
IT (1) | ITBO20080089A1 (en) |
WO (1) | WO2009100784A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040207892A1 (en) * | 2001-05-30 | 2004-10-21 | Irina Menz | Optical element and method for the production thereof |
US6954293B2 (en) * | 1989-09-28 | 2005-10-11 | GAO Gesellschaft für Automation und Organisation mbH | Data carrier having an optically variable element and methods for producing it |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5331443A (en) * | 1992-07-31 | 1994-07-19 | Crown Roll Leaf, Inc. | Laser engraved verification hologram and associated methods |
US6017657A (en) * | 1997-11-26 | 2000-01-25 | Bridgestone Graphic Technologies, Inc. | Method for embossing holograms into aluminum and other hard substrates |
-
2008
- 2008-02-11 IT ITBO20080089 patent/ITBO20080089A1/en unknown
- 2008-11-12 WO PCT/EP2008/065368 patent/WO2009100784A1/en active Application Filing
- 2008-11-12 EP EP08872273A patent/EP2250536A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6954293B2 (en) * | 1989-09-28 | 2005-10-11 | GAO Gesellschaft für Automation und Organisation mbH | Data carrier having an optically variable element and methods for producing it |
US20040207892A1 (en) * | 2001-05-30 | 2004-10-21 | Irina Menz | Optical element and method for the production thereof |
Non-Patent Citations (1)
Title |
---|
See also references of WO2009100784A1 * |
Also Published As
Publication number | Publication date |
---|---|
ITBO20080089A1 (en) | 2009-08-12 |
WO2009100784A1 (en) | 2009-08-20 |
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Inventor name: CAVALLINI, MASSIMILIANO Inventor name: BISCARINI, FABIO Inventor name: MASSACCESI, GIANLUCA Inventor name: MATACOTTA, FRANCESCO CINO |
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