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 the field of mechanical processing of sheet or roll, including layered material, namely, to methods and means of mechanical deformation without removing material, for example, methods and means used for embossing.
• the device comprises a bed with a drive shaft fixed to it, having a grooved surface with mutually intersecting rows of alternating recesses and protrusions, tapering from the base to the top, the drive of the drive shaft and
• At least one driven shaft having a grooved surface with mutually intersecting rows of alternating recesses and protrusions, tapering from the base to the top and arranged to interact with an adjacent corrugated surface of the drive shaft
• the closest analogues of the claimed inventions are the method, device and embossed layered products described in patent RU 2227095, B31F 1/07, 1998.
• the method is intended for the production of embossed sheet material containing at least two layers interconnected.
• the method involves performing an ornament pattern by embossing a first layer on which a general background pattern is previously applied, wherein the ornament pattern is formed by protruding sections that are larger and distributed with a lower density compared to the protruding sections making up the overall background pattern.
• Known analogues including the closest one, do not provide exact copying of an image (for example, a type of photograph) on a sheet material (strip, tape) made of foil or layered material, the outer layer of which is made of metal.
• the closest analogue only allows you to get an image of the ornament by creating, on a uniform overall background, larger protrusions in width or height formed by embossing.
• the transmission of halftones with different levels of gray, in particular, when stamping on foil, known methods can not provide.
• the problem to which the claimed invention is directed is to develop an effective and economical method and means for creating an image such as a photograph by embossing foil or metal coated laminate, used, in particular, as a packaging element in the tobacco and food industries.
• the task is to create an embossed product with an image on it like a photograph, which has a high degree of protection against counterfeiting.
• the protrusions of the shafts in the preferred embodiment are made tapering from the base to the top.
• the vertices of the projections of the surface of the shafts can be made with a horizontal or inclined platform for blunting.
• At one of the shafts of the blunt pad, at least part of the protrusions can be made of different sizes.
• Alternating protrusions may have a pyramidal shape or a truncated pyramid shape.
• the method can also be carried out using a calender containing at least two embossing shafts, one of which is connected to the drive, and on the working surface of the first of the calender shafts there are rows of recesses, and on the working surface of the second shaft there are rows of mating protrusions, or the working surface of the second shaft is made of cylindrical shape from an elastic material, while on the first shaft, a relief surface, shape and variable depth are made by engraving with removal of the shaft material within the depth of the recesses and which are set in accordance with the original image to be copied, and for performing a variable embossing depth on the processed material, the depth of the embossed surface at the places of removal of the shaft material depends on the optical density of the corresponding sections of the copied image and lies in the range corresponding to the location of the lower point of the recess , to a zero value corresponding to the outer surface of the shaft, and in areas of the relief surface located above the recesses, the relief surface is equal to the depth specified by the shape
• the lower part of the recesses can be made with a horizontal blunt pad.
• the lower part of the recesses can be made with an inclined blunt pad.
• platforms blunting recesses can be performed with different sizes of areas.
• the recesses and protrusions can also be made pyramidal or in the form of a truncated pyramid.
• recesses and protrusions can be made conical or in the form of a truncated cone.
• the calender comprises a bed fixed to the bed, at least two embossing shafts, one of which is connected to the drive, and on the working surface of the first of the calender shafts, driven or non-driven, rows of recesses are made, and on the working surface of the second shaft - rows of reciprocal protrusions, or the working surface of the second shaft is made of a cylindrical shape from an elastic material, while on the first shaft engraving with removal of the shaft material within the depths of the recesses is made relief the surface, the shape and variable depth of which is set in accordance with the original image to be copied, and to perform on the processed material a variable embossing depth, the depth of the relief surface at the places of removal of the shaft material is made depending on the optical density of the corresponding sections of the copied image and lies in the range corresponding to the location of the lower point of the recess, to zero, corresponding to the outer surface of the shaft, and in areas of
• a product protected from counterfeiting - a strip or tape made of foil or a laminate with a metal coating, has an embossed image that is a copy of a photograph (or other image) and looks like the original with different levels of gray, transmitting white, black colors, including the tones of the original.
• the technical result from the use of the invention is to ensure that the image is applied to the material in the form of a strip or tape by the embossing method and to obtain an embossed product onto which the image is copied, the perception of which is caused by the effect of simulating different gray levels, determined by the optical density of the corresponding sections of the original of the copied image.
• an image similar to a photograph is received on the product, which is perceived differently depending on the viewing angle and / or on the type and / or on the position of the light source.
• the technical result is that the image obtained on the foil or metallized material has a high degree of protection against counterfeiting.
• a foil with an image deposited on it, obtained by the claimed method using the proposed calender, may in particular, used for tobacco products as an element of their packaging, providing a high degree of protection against counterfeiting.
• the implementation of the invention is carried out by means of an embossing device - calender, which contains a frame on which the drive is mounted and at least two embossing shafts.
• One of the drive shafts is connected to the drive, one, two or more driven shafts rotate when interacting with the drive shaft.
• the interaction of the calender rolls, providing an image on the material in the form of a strip or tape by embossing, can be carried out as follows.
• the driving and driven (driven) shafts can enter into mutual engagement by means of protrusions made on their working surfaces.
• the protrusions of the first shaft are located in the space ("depression", "cell"), formed by the intersection of the side surfaces (or flat, or conical, or cylindrical or other forms) of adjacent protrusions of the working surface of the second shaft.
• at least part of the protrusions of the first shaft has a different geometric shape than the protrusions of the second shaft that enter into engagement with them.
• the working surface of the second shaft can be made with recesses under the protrusions of the first shaft.
• the engagement of the shafts in this case occurs due to the placement of the protrusions of one shaft in the recesses of the other.
• the working surface of the first shaft can be performed with protrusions, and the working surface of the second shaft can have a cylindrical shape.
• the material from which the work surface is made the second shaft must have elasticity, due to which (in the presence of a radial force pressing the shafts), torque is transmitted from the drive shaft to the driven shaft, and, accordingly, the feed of the processed material, as well as the embossing process.
• the working surface of the first shaft can be made with recesses, and the working surface of the second shaft can have a cylindrical shape.
• the material from which the working surface of the second shaft is made must have elasticity, which ensures the transmission of torque from the drive shaft to the follower, the supply of the processed material and embossing.
• This provides a variable embossing depth on the processed material, which, in turn, creates the effect of simulating different levels of gray on the embossed product with the creation of an image similar to a photograph.
• the image obtained on the embossed product is perceived as “negative” or “positive” depending on the viewing angle and / or on the type and / or position of the light source.
• the depth of the embossed surface of the shaft on the area per projection lies in the range from the value corresponding to the location of the base of the protrusion, to a zero value corresponding to the location of the top of the protrusion.
• the maximum depth of the embossed surface at the places of removal of the material of the protrusions corresponds, for example, to “black” in the original image, the minimum depth to “white”. It can be done differently: the maximum depth of the embossed surface corresponds to “white” in the original image, the minimum depth to “black”. This is allowed due to the fact that, as mentioned above, on the finished product, the perception of the embossed image as “negative” or “positive” depends on the angle of view, on the location of the light source.
• the depth of the embossed surface does not depend on the optical density of the original image. This is due to the fact that when processing the surface of the shaft, the tool can only carry out sampling if the processing zone is on the material of the projections. If the surface of the protrusion in any processing zone is lower than specified by the optical density of the original image, the tool passes higher, material is not removed, and the depth of the relief surface in this place is equal to the depth of the protrusion surface. In the extreme case AND
• the depth of the relief surface is maximum and is at the level of the base of the protrusion, regardless of the gray level on the original.
• the shape of the initial protrusions of the shaft may be different.
• the protrusions are made tapering from the base to the apex and have the shape of a pyramid, a truncated pyramid (straight or inclined section), a cone, a truncated cone (straight or inclined section), a tetrahedron, a truncated tetrahedron (straight or inclined section), a polyhedron, a truncated polyhedron (straight or inclined cut), etc.
• the reciprocal recesses of the other shaft for the variant “shaft with protrusions and embossed surface” - “shaft with recesses)) have a similar shape, but there is no relief surface on the shaft with recesses.
• the execution of the tops of the projections of the surface of the shafts can be made either pointed, or with a horizontal area of blunting, or with an inclined platform of blunting.
• the areas for dulling the protrusions of one of the shafts can be made with different sizes of areas.
• the copied image is applied to one shaft having recesses (it does not matter the master or slave).
• the master or slave By engraving remove the material of the shaft between the recesses with the formation of a relief surface, the shape and variable depth of which are set in accordance with the copied original image.
• the maximum depth of the relief surface at the points of removal of the protrusion material may correspond, for example, to “black” on the original image, the minimum depth to “white”, or vice versa, as indicated above.
• the depth of the embossed surface at the places of removal of the material of the shaft depends on the optical density of the corresponding sections of the copied image and lies in the range from the value corresponding to the location of the lower point of the recess to zero, corresponding to the external (working) surface of the shaft.
• the depth of the relief surface is equal to the depth specified by the shape of the recess, and does not depend on the optical density of the original image. This is because when copying the original image onto the shaft, the tool, the movement of which depends on the optical density of the original, can pass over the recess (“hollow”) and not affect the material of the shaft.
• Grooves on the shaft can be made of various shapes. As a rule, they are performed tapering in the direction of the axis of rotation of the shaft, i.e. with a maximum cross-sectional area located on the working surface of the shaft.
• the lower part of the recesses can be made either pointed, or with a horizontal area of blunting, or with an inclined platform of blunting.
• the areas for blunting the recesses can be made with different sizes of areas.
• the recesses can take the form of a pyramid, a truncated pyramid (straight or inclined cut), a cone, a truncated cone (straight or inclined cut), a tetrahedron, a truncated tetrahedron (straight or inclined cut), a polyhedron, a truncated polyhedron (straight or inclined cut), etc.
• the reciprocal protrusions of the other shaft for the “shaft with recesses and embossed surface)) -“ shaft with recesses ” have the same shape, but there is no relief surface on the shaft with the protrusions.
• the edge of the sheet material to be embossed is wound - a strip, a tape (for example, foil or foil material).
• the kinematic link for transmitting the moment of force from the drive shaft to the follower is either the tops of the protrusions or indentations
• the calender provides embossing due to plastic deformation of the sheet material with various surface shapes of the protrusions, the material of which can be removed along the plane or curved surface of any curvature, or recesses.
• the working surface of the drive shaft in cooperation with the working surface of the driven shaft is subjected to plastic deformation of the sheet material, including in the area of the relief surface, with the formation of a microrelief corresponding to the shape, size and location of the protrusions and / or recesses, including in place the location of the embossed surface.
• the tops of the protrusions and / or grooves of the shafts can be made with a horizontal or inclined blunt pad.
• the dulling areas can have different sizes of the area, which provides additional visual effects on the surface of the material due to changes in the reflectivity of the surface.
• the relief surface on the shafts with protrusions or recesses can be obtained by any known method.
• Example. The processed workpiece shaft using the drive of the feed mechanism is fed into the working area to the drive working body.
• the drive motor on the working body rotates the knife shaft or cutter or the laser head is turned on.
• the blade shaft rotates at a high angular speed (several thousand revolutions per minute).
• Drives of horizontal, vertical and angular displacements of the working body controlled by signals from a programmable logic controller through a computer, move the working body according to the program in horizontal, vertical and angular directions, also the feed drive (rotation) of the processed shaft is controlled from the computer.
• the embossed surface can also be obtained using electrochemical processing.

Landscapes

• 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)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39324823

Family Applications (1)

Country Status (3)

Citations (7)

Family Cites Families (2)

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

Patent Citations (7)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events