Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44F—SPECIAL DESIGNS OR PICTURES
  • B44F1/00—Designs or pictures characterised by special or unusual light effects
  • B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
  • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
  • B44B5/0004—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the movement of the embossing tool(s), or the movement of the work, during the embossing operation
  • B44B5/0009—Rotating embossing tools
• • 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
  • B44C1/24—Pressing or stamping ornamental designs on surfaces

Definitions

• the invention relates to a method for embossing an image on a strip or strip material according to the preamble of claim 1 or 17, a calender according to the preamble of claim 8 or 24 and a stamping product according to the preamble of claim 15 and 35, respectively to carry out the process with the calender.
• the device includes a frame with an attached drive shaft, a shaft drive and an output shaft.
• the drive shaft has a corrugated surface with mutually crossing rows of alternating recesses and projections.
• the recesses and the projections converge from the base to the tip.
• On the frame at least one output shaft is arranged.
• the output shaft has a corrugated surface with mutually crossing rows of alternating recesses and projections.
• the recesses and the projections converge from the base to the tip and are arranged to cooperate with the adjacent corrugation surface of the drive shaft.
• the closest prior art to the pending inventions is a method, apparatus, and embossed sheet products disclosed in U.S. Patent RU 2227095 , B31F 1/07, 1998.
• the method is used to produce a stamped sheet metal material.
• the stamping sheet material includes at least two interconnected layers.
• an ornament pattern is carried out by embossing the first layer.
• the entire background pattern is previously applied to the first layer.
• the ornament pattern is formed by the protruding fragments. They have larger dimensions and are distributed at a lower density compared to the protruding fragments.
• the protruding fragments assemble the entire background pattern.
• the known comparison products do not ensure a precise reproduction of the pattern (eg a photo-realistic reproduction of the pattern) on the sheet (strip, strip) of a foil or layer material on the metal outer layer.
• the closest prior art makes it possible to generate the ornamental pattern only so that shaped on the uniform general background width and height larger projections become.
• the halftone transfer using various shades of gray, especially in the foil embossing can not be achieved with the known methods.
• the new method is to apply a pattern which produces the image of the original to be copied (a picture, a picture) with a halftone reproduction.
• the pattern is applied to the strip or to the strip of foil or layer material with a metal outer layer using a calender.
• the calender has a drive shaft and at least one output shaft.
• the working surface of one of the shafts or the working surfaces of both shafts are provided with several rows of projections.
• a wave has a relief surface.
• the relief surface is carried out by engraving with the removal of the supernatant material (in the curvilinear surface and in the plane, respectively) within the supernatant height.
• the shape and variable depth of the relief surface are specified according to the reproduced original image.
• the depth of the relief surface at the locations with the removed material depends on the optical density of the corresponding fragments of the image to be copied.
• the depth value is in the range bounded by two sizes: one size corresponds to the arrangement of the overhang base, and the zero size corresponds to the arrangement of the Supernatant tip.
• the embossing is carried out on the treated material with variable depth. This ensures the effect of imitating different gray levels, in correspondence with darker or lighter areas of the individual fragments of the original image to be copied. Thus, a photorealistic image is generated. This image is perceived differently (“negative” or "positive”) depending on the viewing angle, and / or depending on the view and / or depending on the light source position.
• the wave projections in the preferred embodiment are designed to converge from the base to the tip.
• the overhanging peaks of the wave surfaces can be carried out with a horizontal or oblique flattening surface.
• the flattening surfaces or at least the parts of the projections of one of the shafts may have different surfaces.
• the alternating supernatants may be pyramidal or have the shape of a truncated pyramid.
• the method can also be realized using a calender.
• the calender contains at least two embossing shafts. One of the shafts is coupled to a drive. In this case, rows of recesses are executed on the working surface of the first calender shaft.
• the working surface of the second calender shaft has rows of counter-projections.
• the working surface of the second calender shaft can also be designed in the form of a cylinder made of elastic material.
• the relief surface on the first shaft is executed by engraving with the removal of the shaft material within the recess depth. The shape and variable depth of the relief surface are specified according to the reproduced original image.
• the depth of the relief surface at the locations with the removed wave material depends on the optical density of the corresponding fragments of the image to be copied, in order to achieve the variable embossing depth on the treated material.
• This depth value is in an area bounded by two sizes: one size corresponds to the arrangement of the lower recess point, and the zero size corresponds to the outer shaft surface. That's right the depth of the relief surface between the recesses with the predetermined by the recess shape depth. The totality of these features ensures the effect of imitating different gray levels.
• the gray values are specified by the optical density of the corresponding fragments of the original image to be copied.
• the recesses are narrowed with maximum area running on the shaft surface.
• the lower part of the recesses can be provided with a horizontal flattening surface.
• the lower part of the recesses can be performed with a sloping flat surface.
• the flattening surfaces of the recesses can be made with different surface dimensions.
• the recesses and the supernatants may also be pyramidal or have the shape of a truncated pyramid.
• the recesses and the supernatants may also be tapered or have the shape of a truncated cone.
• the device provides a calender for embossing the image onto a flat (strip or tape) material.
• the calender includes a frame, a drive shaft, a drive for the drive shaft, and at least one output shaft.
• the drive shaft is attached to the frame.
• the surface of the drive shaft is provided with rows arranged projections.
• the output shaft is also attached to the frame and has a surface with rows arranged supernatants.
• the supernatants are designed so that they can interact with the projections of the drive shaft.
• the relief surface is carried out on one of the calender waves by means of engraving with the removal of the supernatant material within the supernatant height.
• the shape and depth of the relief surface will be depending on the optical density of the fragments of the original photo to be copied or another image.
• the depth of the relief surface is carried out variably at the points with supernatants. This depth varies from the maximum size corresponding to the supernatant base arrangement to zero size.
• the zero size corresponds to the location of the overhang peak (in special cases, it can be either a peak or a flat area).
• the variable depth is required to achieve a variable embossing depth on the processing material. This ensures the effect of imitating different gray levels. In this case, a photorealistic image is generated, which is perceived differently depending on the viewing angle and / or depending on the view and / or depending on the light source position ("positive", "negative").
• the calender in another embodiment, includes a frame and at least two embossing shafts mounted on the frame. One of the shafts is coupled to the drive. In this case, some rows of recesses are made on the working surface of the first of the calender shafts (drive or output shaft). On the working surface of the second shaft, a number of rows of counter recesses are made.
• the working surface of the second calender shaft can also be made in the form of a cylinder of elastic material.
• the relief surface on the first shaft is executed by engraving with the removal of the shaft material within the recess depth. The shape and variable depth of the relief surface are specified according to the reproduced original image.
• the depth of the relief surface is carried out at the locations with the removed shaft material depending on the optical density of the corresponding fragments of the image to be copied in order to achieve a variable embossing depth in the processing material.
• This relief depth depth value is in a range bounded by two sizes: one size corresponds to the arrangement of the lower cutoff point and the zero size corresponds to the outer shaft surface.
• the depth of the relief surface between the recesses agrees with the recess shape given depth match. The totality of these features ensures an effect of imitating different gray levels.
• the gray values are specified by the optical density of the corresponding fragments of the original image to be copied.
• a photo-realistic image is generated, which is perceived differently depending on the viewing angle and / or depending on the view and / or depending on the light source position.
• the shape of the recesses and the projections may be different, in particular as described above for the second embodiment of the method.
• the product made as a result of the process or calendering operation and protected against counterfeiting constitutes a strip or band of foil or sheet material with a metal coating.
• This product contains an embossed image.
• This image represents the copy of a photo (or another image) and looks similar to the original with different gray levels.
• the image reflects the white and black colors, including the halftones of the original.
• the technical result as a result of the use of the invention is a guarantee of the image application to a strip or strip material by means of the embossing process and the production of embossing product with the image copied thereon.
• the perception of this image is conditioned by the effect of imitation of different gray levels.
• the gray values are specified by the optical density of the corresponding fragments of the original image to be copied.
• the result is a photo-realistic image on the product. The image is perceived differently depending on the viewing angle and / or the view and / or the light source position.
• the further technical result is that the image formed on the foil or on the metallized material has a high degree of protection against counterfeiting.
• the finished product may be the film or the metallized layer material.
• the finished product may be the film or the metallized layer material.
• the complicated resulting embossing surface Accordingly, it is not possible to manufacture a calender shaft which reproduces the same image.
• the reproduction of an identical image by means of the embossing process is only possible if the original image is used in calender wave production.
• the film with the image embossed thereon according to the new method using the proposed calender can be used in particular for tobacco as an element of its packaging, which ensures a high degree of protection against counterfeiting.
• the process is implemented using an embossing device - the calender.
• the calender contains a frame on which at least two embossing shafts are attached.
• the drive shaft is connected to a drive.
• One, two or more output shafts are driven in cooperation with the drive shaft. The interaction of the calender shafts ensures image imprinting on the strip or strip material.
• the drive shaft and the output shaft (s) can mutually interlock by means of projections.
• the overhangs are carried out on the shaft work surfaces.
• the protrusions of the first shaft are placed in a space (in a "well", "cell") which is defined by the intersection of the side surfaces (or flat, or conical, or cylindrical or other surface shapes) of the adjacent protrusions on the working surface of the second shaft be formed.
• a space in a "well", "cell" which is defined by the intersection of the side surfaces (or flat, or conical, or cylindrical or other surface shapes) of the adjacent protrusions on the working surface of the second shaft be formed.
• at least a portion of the projections of the first wave has a different geometry than the protrusions of the second shaft engaging in these projections.
• the working surface of the second shaft can be made with recesses for the protrusions of the first shaft.
• the wave capture comes in this Case by the arrangement of the projections of a wave in the recesses of the other wave state.
• the working surface of the first shaft may be made with recesses, and the working surface of the second shaft may have a cylindrical shape.
• the material of the working surface of the second shaft must be elastic. Thereby, the torque transmission from the drive shaft to the output shaft and thus the feed of the processing material and, accordingly, the embossing operation are ensured (provided that a radial pressure force of the shafts is present).
• the working surface of the first shaft can be recessed, and the working surface of the second shaft can have a cylindrical shape.
• the material of the working surface of the second shaft must also be elastic as described above. This elasticity ensures the torque transmission from the drive shaft to the output shaft as well as the feed of the processing material and the stamping process.
• the image to be copied is applied to a shaft with protrusions (regardless of whether the drive or output shaft).
• the material of the supernatants within the supernatant height is removed by means of engraving.
• a relief surface is formed on the shaft.
• the shape and depth of the relief surface are determined by the original image. If the wave surface is provided with a relief surface, the processing depth at the locations with the removed material (in the wave projections) varies from minimum to maximum size depending on the optical density of the corresponding fragments of the image to be copied (depending on the original gray values from white to black). This ensures the variable embossing depth on the processing material, which in turn creates an effect of imitating different gray levels on the embossed product. This creates a photorealistic image.
• the image on the embossed product is perceived as "negative” or “positive” depending on the viewing angle and / or the view and / or the light source location.
• the depth of the corrugated surface on the surface which belongs to the supernatants, lies in an area which is limited by two sizes: one size corresponds to the arrangement of the supernatant base and the zero size corresponds to the arrangement of the supernatant tip.
• one size corresponds to the arrangement of the supernatant base
• the zero size corresponds to the arrangement of the supernatant tip.
• the maximum depth of the relief surface at the locations with the removed material corresponds to the "black” color on the original image and the minimum depth of the "white” color.
• the maximum depth of the relief surface corresponds to the "white” color on the original image and the minimum depth of the "black” color. This is possible because, as described above, the perception of the embossed image as a "negative” or as a "positive” on the finished product depends on the viewing angle and the position of the light source.
• the relief surface depth at the individual fragments of the wave does not depend on the optical density of the output image. This is because the tool can only perform the training in treating the shaft surface if the treatment zone coincides with the material of the supernatants. If the supernatant surface is lower in any processing zone than dictated by the optical density of the original image, then the tool will be higher. There is no material removal, and the relief surface depth at this point is consistent with the layer depth of the supernatant surface. In the limiting case, the depth of the relief surface is maximum and lies in the same level of the supernatant base independent of the gray values in the original.
• the shape of the original wave projections may be different.
• the supernatants are convergent from the base to the tip and have the shape of a pyramid, a truncated pyramid (straight or oblique), a cone, a truncated cone (straight or oblique), a quadrilateral, a truncated quadrilateral (straight or bevel cut), a polyhedron, a truncated polyhedron (straight or bevel cut), etc.
• the counter-recesses of the other shaft in the embodiment shaft with protrusions and relief surface - shaft with recesses have a similar shape, but on the shaft with recesses no relief surface is present.
• the projecting points of the corrugation surfaces can be either pointed, with a horizontal flattening surface or with an oblique flattening surface.
• the flats of the projections of one of the waves can be made with different surface dimensions.
• the image to be copied is applied to a shaft with recesses (regardless of whether the drive or output shaft).
• the shaft material between the recesses is removed by engraving, in such a way that the relief surface is formed.
• the shape and variable depth of the relief surface are specified according to the reproduced original image.
• the maximum depth of the sculptured surface at the locations with the removed material may correspond, for example, to the "black” color on the original image and the minimum depth of the "white” color, or vice versa, as described above.
• the depth of the sculptured surface at the locations with the removed corrugation material depends on the optical density of the corresponding fragments of the image to be copied. It lies in an area bounded by the following quantities: from the lowest recess point to the shaft size, which corresponds to the outer working surface of the shaft.
• the depth of the relief surface coincides with the depth predetermined by the recess shape and does not depend on the optical density of the original image. This is explained by the fact that the tool, whose motion depends on the optical density of the original, can pass over the recess (above the void) when copying the original image onto the shaft without touching the shaft material.
• the recesses on the shaft can have different shapes. As a rule, they are performed convergently in the direction of the shaft rotation axis. That is, they have the largest cross-sectional area that lies on the working surface of the shaft.
• the lower part of the recesses may be either tapered or with a flat horizontal surface or an oblique flat surface become.
• the flattening surfaces of the recesses can be made with different surface dimensions.
• the recesses may take the form of a pyramid, a truncated pyramid (straight or oblique), a cone, a truncated cone (straight or oblique), a quadrilateral, a truncated quadrilateral (with a straight or oblique section) or bevel cut), a polyhedron, a truncated polyhedron (straight or bevel cut), etc.
• the counter-projections on the other shaft in the embodiment "shaft with recesses and relief surface - shaft with projections" have a similar shape, but no relief surface on the shaft with protrusions exists.
• the edge of the sheet material to be embossed - strip, tape (eg foil or film-like material) is inserted between the working surfaces of the drive and output shafts.
• the edge of the sheet material to be embossed - strip, tape eg foil or film-like material
• the calender ensures the embossing by the plastic deformation of the sheet material with different shape of the supernatant surfaces.
• the material of the supernatant surfaces can be removed in the plane or in the curvilinear surface with any curvature or recesses.
• the working surface of the drive shaft interacts with the working surface of the output shaft.
• the sheet material is subjected to the plastic deformation, including in the area of the relief surface.
• a micro-relief is formed, which coincides with the shape, with the dimensions and with the arrangement of the projections and / or the recesses, including in the area of the relief surface.
• the tips of the projections and / or the recesses of the shafts can be carried out with a horizontal or oblique flattening surface.
• the flats can have different surface sizes. This ensures the additional imaging effects on the material surface due to the change in surface reflectivity.
• the relief surface on the waves with protrusions or recesses can be made by any known method.
• the treated semi-finished shaft is advanced to the driven tool by the drive of the feed mechanism into the work area.
• the drive motor on the tool rotates a knife roller or a milling cutter or a laser head is activated.
• the knife roller rotates at high rotational speed (several thousands of revolutions per minute).
• the drives for the horizontal, vertical and angular displacements of the tool are controlled by the signals from a programmable logic controller via a computer and move the tool according to the program in the horizontal, vertical and angular directions.
• the computer also controls the drive for the feed (pivoting) of the treated shaft.
• the relief surface can be created with an unlimited amount of images.
• the relief surface can also be produced using electrochemical treatment.

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• Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)
• Credit Cards Or The Like (AREA)

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Citations (3)

Family Cites Families (6)

• 2006
  • 2006-10-25 RU RU2006137642/12A patent/RU2359839C2/ru active
• 2007
  • 2007-07-23 EP EP07794095A patent/EP2095971A4/fr not_active Withdrawn
  • 2007-07-23 WO PCT/RU2007/000405 patent/WO2008051112A1/fr active Application Filing

Patent Citations (3)

Non-Patent Citations (1)

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