Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
  • B44C1/22—Removing surface-material, e.g. by engraving, by etching
  • B44C1/228—Removing surface-material, e.g. by engraving, by etching by laser radiation
• • 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
  • B65D51/00—Closures not otherwise provided for
  • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
  • B65D51/245—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes provided with decoration, information or contents indicating devices, labels

Definitions

• the invention relates to a closure cap, in particular a bottle screw cap made of plastic, with at least one lacquer coating applied to the surface of the top of the cap.
• the invention also relates to a method for producing a closure cap, in which the top of the closure cap is coated with a lacquer.
• the invention is therefore based on the object of providing a closure cap and a method for producing such a closure cap, in which the environment is less polluted, the changeover time is reduced to a minimum and the manufacture is also more economical
• This object is achieved according to the invention in the case of a closure cap of the type mentioned at the outset in that the lacquer coating consists of a lacquer which can be removed by laser and the lacquer coating forms a decor processed by a laser.
• the top of the cap has a lacquer coating which is partially removed by means of a laser, so that not only the lacquer coating but also part of the material from which the closure cap is made are visible.
• a decor can be created by correspondingly removing part of the lacquer coating.
• This decor is either an image or a lettering.
• the marking of an object by means of a laser is to be distinguished from the production of such a decoration, since during the marking a high-energy laser beam is emitted for an extremely short time through a mask onto the object to be marked.
• the information to be marked is determined via the mask.
• the information or the image is therefore not generated by means of the laser beam itself, but rather by means of the mask.
• the sealing cap according to the invention no solvents and printing plates, photoresists and etching agents are required for the decoration, which is why the environmental impact is significantly reduced.
• a changeover from one print image to another is possible at any time and without any problems and without the production line being down.
• the conversion is carried out by the software that controls the laser. This means that the caps can even be processed in a random process (personalization).
• a particularly preferred area of application is screw End caps for beverage bottles, which usually bear the brand name of the beverage manufacturer on the top.
• a plurality of lacquer coatings are applied one above the other and / or next to one another on the top of the cap.
• a multicolored decor can easily be produced by removing a correspondingly more or less large part of one or the other lacquer coating.
• layers of lacquer applied one above the other these can be partially or completely removed.
• an underlying layer of lacquer appears, in the other case the base material of the cap is visible.
• a separation layer is preferably provided between them.
• This separating layer is preferably colorless and transparent, which has the advantage that the underlying lacquer layer is protected if only the lacquer layer above it is removed. If the lacquer layer above has a fluctuating layer thickness, the separating layer serves as a buffer, so that the lacquer layer underneath is not attacked by the laser beam.
• the lacquer layer and / or a separating layer have their own removal parameters. Using modern lasers, only the desired layers of paint to be removed can be removed due to the different removal parameters. Color layers that cannot be removed remain on the top of the closure cap due to their or their other removal parameters. For example, one lacquer sensitive to light of one wavelength and the other lacquer sensitive to light of the other wavelength.
• the lacquer layer and / or the separating layer is preferably applied by a painting process, by printing, by gluing or by spraying. Diving is also possible. No clichés are required for this type of job, since the print image to be generated is created later using the laser. Only the coating has to be applied to the cap surface.
• the varnish layer is advantageously colored. In this way, not only black and white images but also color images can be generated.
• the closure cap is made from one or more different or differently colored plastics. In this way, a multi-color print can be produced even with a single layer of lacquer.
• the above-mentioned object is also achieved with a method for producing a closure cap, in which the top of the closure cap is coated with a lacquer, part of the lacquer being removed by means of a laser to such an extent and in such a way that the material lying under the lacquer layer becomes visible and a decor is created.
• the printed image is therefore not generated using a printing method, but rather by means of a laser, the laser using the laser beam to remove part of a previously applied lacquer layer.
• a plurality of lacquer layers are applied one above the other and / or next to one another on the upper side of the closure cap.
• a further development of the method according to the invention provides that the top lacquer layer is removed by means of the laser as far as an underlying lacquer layer or up to the plastic of the workpiece.
• multicolored printed images can also be generated by the laser beam penetrating more or less deeply into the multiple layers of paint and removing parts of one or more layers of paint.
• the removal of the lacquer layers is preferably carried out punctiform or linear or flat. In this way, high removal rates can be achieved, depending on requirements, or targeted, precise removal can be carried out.
• closure cap according to the invention and the production method according to the invention for the closure cap protect the environment and that the changeover to a new printed image can be carried out quickly and easily and that the method according to the invention can be produced more cheaply.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Optics & Photonics (AREA)
• Toxicology (AREA)
• Closures For Containers (AREA)
• Thermal Transfer Or Thermal Recording In General (AREA)
• Package Frames And Binding Bands (AREA)
• Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7699963

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (1)

Citations (4)

Family Cites Families (4)

• 2001
  • 2001-09-19 DE DE10146819A patent/DE10146819C2/de not_active Expired - Fee Related
• 2002
  • 2002-07-13 EP EP02764688A patent/EP1427649B1/de not_active Expired - Lifetime
  • 2002-07-13 DE DE50201813T patent/DE50201813D1/de not_active Expired - Fee Related
  • 2002-07-13 ES ES02764688T patent/ES2233856T3/es not_active Expired - Lifetime
  • 2002-07-13 AT AT02764688T patent/ATE284826T1/de not_active IP Right Cessation
  • 2002-07-13 WO PCT/EP2002/007823 patent/WO2003024828A1/de not_active Application Discontinuation

Patent Citations (4)

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