KR20160127409A - Method for manufacturing a set of embossing rollers - Google Patents

Abstract

The present invention relates to a method of manufacturing an embossing roller for a device to emboss packaging materials including a set of at least two embossing rollers. One of the embossing rollers is drive-operated; and the embossing roller set includes a male roller having a male surface structure including a structural element and/or a logo structure, and a female roller having a female surface structure embossing with the male roller and joined to the surface structure of the male roller. The female surface structure is separately manufactured from the male surface structure manufactured in the past or physically existing in the past. The method of manufacturing the embossing roller set obtains high embossing precision. On one hand, the method of manufacturing the embossing roller set enables the creation of various huge embossing structures; and on the other hand, the method of manufacturing the embossing roller set not only reduces a transverse tension to the embossed material, but also enables usage of large amounts of various materials. The purpose of the present invention is to provide the method of manufacturing the embossing roller set enabling fine structure embossing with the various surface structures.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a method for manufacturing an embossing roller set,

The present invention relates to a method for producing an embossing roller set for a device comprising two rollers for embossing a packaging material according to the preamble of claim 1, To an embossing roller set and a device for embossing the packaging material thus produced, and to the use of such embossing rollers.

The packaging foils used for the tobacco industry or the food industry are embossed using embossing roller devices, which may be, for example, inner liners wrapping a plurality of tobacco peripheries, chocolate, butter or similar food , Packaging materials for packaging electronic components, jewelry or watches.

Initially, the inner liners were made of pure aluminum foil, for example, a household foil, and such materials were passed through two rollers for embossing, and one of the two rollers And reliefs called logos (often referred to as 'figure marks'). Until the 1980s, such a pair of rollers consisted of a steel roller on which the relief was formed and a counter roller made of an elastic material such as rubber, paper or acrylic glass. A mirror-inverted impression was made by impressing the relief of a male roller into a counter roller, i.e. a female roller.

For more complex logos, the relief of the water roller was transferred to the layer on the arm roller, and the indentations corresponding to the protruded portion were removed by etching or otherwise sheared away. Recently, lasers have been used for such an engraving process.

As the demand for such a method of manufacturing the female rollers has increased, since the 1980s, the patent of US 5 007 271 developed by the applicant of the present invention has been filed and two identical steel rollers with numerous small teeth engage and pass So-called pin-up / pin-up systems have begun to be used more and more for the purpose of embossing on paper that is made of paper. The logos are manufactured in such a way as to partially or entirely remove the teeth formed on one roller.

This allows a satinishing operation (satinizing) in which a number of small indentations created by a number of small notch indents create a matte, more valuable surface appearance.

The EP 0 114 169 1 patent is provided at the back of the printing apparatus and comprises a male metal embossing roller and a female counter roller made of elastic materials, the depression in the female roller being a male, And the embossing device is formed larger than the convex portion of the roller. Such a device can not be used for embossing without a pre-printing operation. Apart from the fact that a laser can be used to form the depression, no method of manufacturing the two rollers is disclosed.

US 5 269 983 A discloses a pair of rollers comprising a metal roller and an elastic arm roller.

DE 10 2005 056627 A1 discloses a method for making blanks for an inner liner for a bundle of cigarettes, comprising a pair of embossing rollers having convex portions on one roller and corresponding depressions on the other roller, And devices. However, a method for manufacturing a pair of rollers is not disclosed.

DE 43 42 737 A1 discloses a method and apparatus for making embossed inner liner blanks using a pair of rollers. In the apparatus, one roller is provided with an engraving on a part of its periphery, while the counter roller is provided with engraving on its entire periphery. However, no hint of a method of manufacturing the embossing rollers is disclosed.

EP 2 327 502 A1 by the same applicant discloses a method and apparatus for constructing embossing rollers using laser devices.

EP 1 658 965 A1 discloses an embossing device with two pairs of embossing rollers, one pair in the pair of embossing rollers for satin-polishing the foil, and the other pair for embossing the graphic. The second pair of rollers includes a male roller and an elastic female roller or rollers in a pin up-pin down configuration. However, a method for manufacturing the rollers is not disclosed.

In accordance with the development of embossing technology, for example in the manufacture of embossing rollers, a change has occurred in the packaging material of the side part. That is, all the metallic aluminum that was originally used was replaced with a paper foil whose surface was coated with a thin metal layer in consideration of environmental aspects, and these thin metal layers were recently sputtered . In recent years, the use of metal layers formed on the inner liner will be further reduced and ultimately omitted in the future.

At the same time, attempts have been made to replace the classical packaging system in which, in the classical packaging system, cigarettes are packed in inner liners, which are inserted into paperboard packets by so-called soft packs, Only one packaging foil is provided and the functions of keeping the cigarette moist and on the one hand protecting it from external odor influences and on the other hand providing the desired strength for the mechanical protection of the cigarette .

The development of the embossing rollers in terms of their manufacture, in particular the development known by the inventors of the present invention (see US 7 036 347), provides a permanent ornamental effect on the inner liners, and not only in the tobacco industry, Enables various advertisements that can be used. In recent years, however, efforts have been made to strictly restrict or completely eliminate advertising for tobacco products, since it is no longer possible to emboss in inner liners with more effective designs up to the previous level. Therefore, various possibilities are being sought to create new decorative effects without using eye-catching embossing, gold or various kinds of decoration.

What is now being considered is a new possibility for product identification, which is commonly used in internationally renowned brand names. Today, the so-called tactile effect, which is made by a special surface structure of paper or made by a special stamp, is used. Fabrics and paper provide an inflatable IR absorbing optimization collar that produces so-called pseudo-embossings. The purpose of such a technique may be to form a perceptible relief to create a velvet (matte) effect or a matte effect, for example. In practical applications for food safety purposes, wetting techniques are questionable.

In the case of surfaces with tactile sensation, consumers identify their products using their tactile senses. Such braille can be applied to create braille writing or hidden security features. The information produced in a tactile manner can be read out by laser emission according to the surface reflectance. Recent developments are focused on creating audible effects that can occur by rubbing over the surface.

Another part of the tobacco industry is associated with cigarettes themselves, called tips, for example, mouthpieces.

Aluminum foil, metal coated paper, tipping papers, hybrid foil, plastic foil, paper board or card stock for additional features such as continued stringent legislation, tactile, acoustic or other optical properties for tobacco products. up pin-up embossing rollers in which the driven rollers and counter rollers have numerous teeth as a result of different and increasingly different kinds of packaging materials, such as cardstock, can be used to completely and successfully emboss the inner liners But have limitations on the above-mentioned objects.

While conventional roller systems include male rollers having a male structure with the same size and shape as those of each other and female rollers having an arm structure, their production is very costly, , Which is time-consuming due to the production of mutually consistent configurations, and in the tobacco industry, for example, metal inner liners are not suitable for the manufacture of industrial embossing.

In order to obtain fine embossing, a very high roller manufacturing cost is involved. And when male rollers and female rollers of the same shape and size are used against each other, the foil tears between them, creating a tensile force in the transverse direction which can not be used for tobacco product paper. Moreover, it is possible to reach a hardly controllable limit in perforation formation, requiring very high pressure for high speed on-line processing, and the embossing time to be in the millisecond (millisecond) range. Ultimately, there is a tendency to use thicker paper.

US 5 007 271 EP 0 114 169 1 US 5 269 983 A DE 10 2005 056627 A1 DE 43 42 737 A1 EP 2 327 502 A1 EP 1 658 965 A1 US 7 036 347

SUMMARY OF THE INVENTION In accordance with the foregoing, it is an object of the present invention to provide an embossing roller set that enables microstructure embossing of the most diverse surface structures of the indicated materials in the on-line process of a single packaging line And a method for providing the same. As used herein, the term microstructure embossing means that the contour of the microstructured embossing structure of the roller exhibits an overall linear error of less than +/- 10 microns and an angular error of less than 5 degrees.

Another object of the present invention is to provide a method and apparatus for aligning rolls that are regularly arranged in a direction transverse to the direction of travel and wherein the deformation of the embossed foils during embossing in a uniform structure is very small such that the rollers can be used for on- .

Another object of the present invention is to produce a set of such rollers on an industrial scale with the required precision and numbers.

According to a first aspect, the present invention provides a method for making a set of embossing rollers for an apparatus for embossing packaging materials having two rollers. The embossing roller set includes a male roller having a male surface structure including a structural element and / or a logo structure, and a male roller for co-embossing with the male roller And an arm roller having an arm surface structure combined with the surface structure, and the roller embossing set is designed to use an embossing roller for microstructure embossing in an on-line process. The combined cancer surface structure is produced independently of the previously produced or physically existing male surface structure to create a predetermined deviation from the agreement between the male surface structure and the cancer surface structure And also a profile of the roller surface structure for a microstructure embossing process with an overall linear error of less than +/- 15 m and an angular error of less than one.

In a preferred embodiment, the surface structure of the embossing rollers is such that during the on-line embossing process which is regularly arranged in the packaging line and has a uniform embossing pattern, residual tension on the packaging materials in the direction transverse to the direction of travel of the rollers The form is constructed so that it is not created.

In another preferred embodiment, the surface structures of the embossing rollers are configured in such a way that the embossed foil can have an embossing pattern that can recognize the tactile sense.

In another preferred embodiment, the tactile perceivable embossing pattern comprises a special code such as Braille or voicelessly available signs.

In another preferred embodiment, the size of the structural elements of the male rollers on one side and the size of the structural elements of the female rollers engaged on the other side deviate from each other by a predetermined extent which does not impair their mutual cooperation .

In another preferred embodiment, the voluntary deviations of the linear dimensions of the structural elements of the rollers from one another are greater than 15 m, and the angles of the edge portions of the structural elements are no less than 4 from each other.

In another preferred embodiment, in order to reduce the tensile in the transverse direction in the embossed material, while the passage of the foil web between the embossing rollers takes place, the embossed logo structure in one section, The logo structures of the embossing rollers are arranged and designed such that at least two sections can be embossed on the foil web, such that they are offset in the advancing direction with respect to the structures.

In another preferred embodiment, the projected positioning marks 27 are formed on a male roller, and the recessed positioning marks 28 to be engaged are formed on the female rollers And the opposite case is possible.

In another preferred embodiment, the surface structure of the embossing rollers can be made by a femto-or picosecond laser system.

In another preferred embodiment, on the surface of the rollers, a coarse structure and a superposed microstructure are formed.

In another preferred embodiment, on the surface of the paired rollers, zones are made to create creasings, protruding creasing structures are made on one roller, and The coupled groove-shaped creasing structures are made on the other rollers, and such creasing structures are more protruded than the other structures or are formed in a groove-like shape.

In another preferred embodiment, one of the embossing rollers is made at least over the width of a web of packaging material having a diameter decreasing by ' proportion to the remainder of the embossing rollers, the value being 0.02 mm Lt; / RTI >

In another preferred embodiment, the packaging material is suitable for packaging food and medicines, or the packaging material may be a tipping paper, a tobacco paper, an inner liner or inner frame paper, a hybrid paper, a synthetic foil or paper board or a tobacco product Is card stock for packaging.

In a second aspect, the present invention provides an embossing roller set comprising a water roller and an arm roller manufactured in accordance with the above-described inventive method. The structural elements provided on the water rollers and the structural elements on the female rollers are not identical in reverse to each other and deviate from each other by more than one linearly and angularly by more than 15m.

In another preferred embodiment, the surfaces of the rollers are made of at least a metal, a cemented carbide or a ceramic, and the surface has a protective layer.

In another preferred embodiment, one roller of the embossing rollers is connected to another embossing roller by means of synchronization means, preferably gearwheels.

In another preferred embodiment, the two embossing rollers comprise mutually coinciding areas having a protruding or grooved configuration to create a creasing area. These structures are more protruding or more grooved than the rest of the structures.

In a third aspect, the present invention provides use of the embossing roller set described above in an embossing device. The embossing device is integrated directly into the packaging line on-line using a robot or the like.

In another preferred embodiment, the rollers are preferably arranged at a predetermined mutual distance greater than 0.02 mm.

In another preferred embodiment, the set of embossing rollers is arranged in a quick-change device designed such that the embossing rollers are individually and independently interchangeable with respect to each other.

In another preferred embodiment, the embossing rollers are rotatably secured within the roller support and the roller supports are secured in place in the quick change housing and are individually and independently movable. One end of the water roller support is supported by the needle bearing and the other end is supported by the ball bearing.

In another preferred embodiment, a lower portion of one of the roller supporting portions is provided with a key, and a groove is formed in the bottom portion of the housing.

In another preferred embodiment, the upper portion of the other roller support has a key, a groove is formed in the upper part of the housing, or an edge portion of the upper side forms a T-shaped key, T-shaped grooves.

In another preferred embodiment, the quick changing device has a housing in which two opposing walls are formed, each comprising two openings with securing means for receiving and securing the rotational axis of the rollers.

In the prior art, the water rollers and the arm rollers were always made in pairs. When one roller of the rollers needs to be replaced, inevitably one of the rollers has to be replaced as the female rollers are formed on the male rollers in the same size and shape to be opposite to each other. However, according to the method according to the present invention, which can be manufactured individually, it is possible to exchange the water roller or the armor roller separately, which is an important advantage in terms of designability as well as a difference in wear behavior.

In the present invention, the surface structure of the roller set, which is formed in a form independent from each other, is formed by molding the water rollers first and then forming the female rollers physically dependent thereon, Can be achieved within the required manufacturing time with the requisite precision using a given laser system that allows it to be manufactured reasonably and precisely, in a wide variety of forms and independently of each other.

Due to the fact that the arm structures formed on the rollers are not the same in size and shape, as opposed to each other, the individual manufacture of the male and female rollers has the effect of enabling the tension reduction in the cross direction, Not only the quality of the embossing is improved, but also the transverse tension in the embossed foil is sufficiently reduced since the size and shape of the teeth do not exactly coincide with the indentation marks on the arm roller.

Especially in the case of embossing of two tipping webs of respective rollers, a twist that can be significant to the cutting operation can be made in the foil web.

The present invention can be manufactured in a more diversified and more reasonably finer surface structure of the rollers, especially the female rollers, and the precision can be realized according to the prior art by means of very expensive etching or mechanical processing procedures, The same method has the effect of making the rational and faster production of the arm-and-rollers possible in a wider variety of surface structures.

In addition, in the arm-and-throw rollers according to the present invention, the arm-and-can rollers are generally more applicable to crushing formation, such as embossing of relatively narrow tipping webs as well as embossing structures arranged in multiple lines have.

1 schematically shows a set of embossing rollers of the pin-up / pin-up type according to the prior art in an embossing device, the two rollers having teeth projecting from the cylinder.
Figure 2 schematically shows a set of pin-up / pin-down embossing rollers according to the prior art, in which the female roller is a pin-down roller and the male roller is a pin- And the sizes are combined.
Figure 3 is a schematic view of a set of embossing rollers of the female / male roller type according to the present invention.
Fig. 4 is a view showing a modification of the embodiment of the set of embossing rollers of Fig. 3;
Fig. 5 is a view showing a modification of another embodiment of the set of embossing rollers of Fig. 3;
Figures 6 (a), 6 (b) and 6 (c) are three different enlarged views showing the details of the number rollers of the embossing set of Figure 5.
7 is a view showing a modification of the embodiment of the set of embossing rollers of FIG.
Fig. 8 is a view showing a modification of another embodiment of the set of embossing rollers of Fig. 3;
9 is a diagram showing a laser system for manufacturing structures of arm-and-throw rollers according to the present invention.
10 to 16 are views showing modifications of the embodiment of the structure of the embossing rollers according to FIG.
Figures 17 to 20B are schematic cross-sectional views of embodiments of numbers and arm structures that are not identical in size and shape to each other in reverse.
Figs. 21-35 show variations of an embodiment of roller pairs having regions for producing folding creases. Fig.
Figure 36 is a schematic diagram showing a first exemplary embodiment in a perspective view of a quick change device for rollers according to the present invention.
Fig. 37 is a diagram showing the assembled state of Fig. 21 in a cross-sectional view.
Figure 38 is a schematic diagram showing in a perspective view a second exemplary embodiment of a quick changing device for rollers according to the present invention.
Figure 39 is a schematic diagram showing in a perspective view a third exemplary embodiment of a quick changing device for rollers according to the present invention.
Figure 40 is a schematic diagram showing another exemplary embodiment of a quick change device for rollers according to the present invention in perspective view.
Figures 41-43 show pairs of embossing rollers in preferred embodiments according to the present invention.
Figures 44 to 46 show cuts of embossed and creased foils.

Additional objects and advantages in the manufacture of roller pairs for making creasings will become apparent from the following detailed description.

The present invention will be described below with reference to the drawings of exemplary embodiments.

1 shows a prior art embossing device 1 having a set of two rollers 2 and 3 of the pin-up / pin-up type. In the above configuration, the steel cylinders are pyramidal and have protruding teeth (protruded teeth) 4 having a square or hexagonal base. The rollers described above by the applicant of the present invention have been used for more than 20 years in the tobacco packing line and other packing lines and the rotary shaft 5 of the driven roller 2 is fixedly supported, Are driven and synchronized by a driven roller. In one known method, such an embossing device may comprise more than two embossing rollers, for example one embossing roller and two counter rollers.

In such a case, one tooth of one roller is coupled between the four teeth of the other roller, and the rotational axis 5 of the counter roller 3 is rotated in the three-dimensional direction so that self- Movement is possible. The teeth of the driven rollers may be completely or partially removed to create logos and authentication shapes to produce an image that varies with the light incidence angle and with the observer's viewing angle. Moreover, it is known to use micromachines to create authentication features on the tops of the teeth or to the sides of the teeth, or otherwise remove or modify any teeth in a given configuration.

Pin-up / pin-up rollers are highly suitable and have been used successfully for decades to make certification features or decorations on inner liners, metal coated paper. As mentioned in the introduction, the application of higher conditions for embossing precision and the steadily growing variety of packaging materials such as synthetic foil, hybrid foil, paper board or cardstock, and more stringent regulations on advertising and new Embossing trends show the limitations of pin-up / pin-up embossing roller devices.

In addition to the devices using pin-up / pin-up rollers, i.e. two or more roller rollers, the embossing may be carried out by means of a so-called pin-up / pin-down roller pair A roller having a protruding amount on one side and a concave negative shape on the other side).

The apparatus 7 according to figure 2 comprises two rollers 2 and 8 in which the water roller 2 can be the same as that shown in figure 1 and the female roller 8 is a so- As the down roller, the indentation marks 9 correspond to the teeth 4 formed in the roller 2 in the shape and size opposite to each other. As shown in Fig. 1, the roller 2 is driven by a driving part 6, and the roller 8 is driven by teeth 4. Fig. To achieve a smooth embossing operation, the teeth and indentations must be machined and adjusted to a very fine degree with respect to each other.

The toothing of the water roller is formed on the arm cylinder and the first water roller 2 is manufactured by contacting the arm roller steel cylinder in such a manner that a photo-lacquer or a wax layer or the like is applied to the arm cylinder. As a result, the indentation marks 9 formed on the arm cylinder corresponding to the teeth 4 are generally scraped off by etching (etching, etching). It is well known to use a mechanical method or a laser system to shave indentations on an arm roller.

In accordance with these general types of embossing rollers, a number of codes, images, letters, or the like, corresponding to logos and security features or authentication features that can be easily seen with the naked eye and readable using certain optical devices Methods for forming on their hard surfaces are generally known.

The application of arm-and-roller pairs for industrial purposes is very limited due to the very complex technology required for the manufacture of the male-male roller pairs according to the prior art. In general, such systems are made for specification and are used for specific purposes. The conventional arm-and-roller system having a structure of the same size and shape as those of each other has serious problems. In particular, after the embossing of the transverse structure, the foil may be warped in the transverse direction, Which makes the process very difficult. The resulting transverse tensile forces can puncture the foil, making it difficult to use such systems in the food or tobacco industry. The basic conditions for practical improvement in embossability and quality and application in on-line processing are as follows. The surface structure of the rollers, particularly the female rollers, can be made more diverse and more reasonably finer. The precision can be realized according to the prior art by means of very expensive etching or mechanical processing procedures and this method is not suitable for the rational and quick manufacture of the arm-and-rollers in more various surface structures.

Another requirement is to take steps to reduce the lateral tension in the embossed foil, which often occurs in structures having the same size and shape as the opposite to each other, to the point that it will no longer damage the next process.

One solution is to form the surface structure of the roller set, which is configured in a form independent of each other, rather than shaping the water rollers first and then forming the female rollers in a physically dependent relationship. Such a method, using a given laser system that allows the roller as well as the arm roller to be manufactured in a wide variety of forms and independently of each other, reasonably and precisely, It is possible.

Because of the fact that the arm structures are not the same in size and shape, as opposed to each other, the individual manufacture of the male and female rollers allows for the reduction of the tension in the cross direction. Not only the quality of the embossing can be improved, but also the transverse tension in the embossed foil can be sufficiently reduced since the size and shape of the female structure, for example, the teeth, do not exactly coincide with the indentation marks on the female rollers.

This problem, particularly when embossing two tipping webs of each of the rollers, can make a twist on the foil web that can be important for the cutting operation.

According to WO-2011/098376 by the applicant of the present invention corresponding to the pin-up / pin-up roller, the above-mentioned problem can be solved by arranging logo lines formed on two tipping webs at mutually offset positions have. As a result, no tension is generated when the tipping webs are cut, and the tipping web portions can be adhered to the cigarette mouthpiece without problems in forming the invisible tip.

In the arm-and-throw rollers according to the present invention, the arm-and-can rollers are generally better suited for embossing of relatively narrow tipping webs, as well as embossing structures arranged in multiple rows.

3 is an enlarged view showing a schematic view of the embossing apparatus 10 and a surface structure thereof according to the present invention including a water roller P11 and an arm roller M11. In the above configuration, the lozenge rough structures GP1 and GM1 Are shown, and reference is made to Figures 10-16.

Since the rough structures are not toothed, the driving force is transmitted by the gear wheels 39 and 40 from the water roller P11 driven via the belt driving section 6 to the arm roller M11.

In a variant of the embodiment of Figure 4, the rollers P11E and M1E have a rough surface (GPE and GME) structure consisting of an uppercase "E ".

5, the rollers P11W and M11W have the same rough surface structure (GPE and GME) consisting of an emblem "W" as well as an uppercase "E ". 6. The emblem "W" indicated on the water roller P11W is shown in the other figures. 6 (a) is a top view (a plan view), Fig. 6 (b) is a perspective view, and Fig. 6 (c) is a cross-sectional view.

Fig. 7 is a view showing a modification of the embodiment of the roller pair of Fig. 5; In the configuration of the figure, the two rollers P11B and M11B are additionally provided with an " E "shape and emblem" W ", and the positioning marks 27 and 28 are provided by the camera with rollers and embossed material To synchronize with each other.

8 is a view showing a pair of embossing rollers P11L and M11L provided with marks 27 and 28 and having no structure other than the emblem.

Figure 9 schematically illustrates an exemplary laser system suitable for continuous micro-etch = macro-organizing processes, which allows to make the coarse and fine structures shown in Figures 10-16. The depicted laser device L12 comprises a laser 12 connected to a control circuit 13 for controlling the laser 12 and a beam splitter as well as an acousto-optical or electro- And a deflection unit (14) having a deflection unit (14). The deflecting unit 14, the focusing optics 15 and the deflecting mirror 16 constitute an imprinting unit 17 which is symbolized by the arrow "X " symbolically " X " Alternatively, the entire laser device L1 may be displaceable to the axis "X ".

The control circuit 13 is connected to a position detector 18 for detecting and evaluating data of the rotary workpiece 19, in this case an embossing roller blank. The workpiece is driven by a drive unit 20 symbolized by the rotation angle [phi]. The combined action of the linear displacement movement of the imprinting unit and the roller rotation produces a continuous helical line SL, thereby enabling uniform machining.

An application example of a deflecting unit having one or more beam splitters as well as an electro-optical or acousto-optical modulator or one or more polygonal mirrors may be applied simultaneously to two or more tracks, Allowing the first laser beam to be divided into two or more laser beams at a predetermined distance not received. And the time interval between the impingement of the individual pulses is chosen to be long enough to avoid thermal overload.

According to the application of a short pulse laser whose laser pulse is in the range between 10 femtoseconds and 100 picoseconds, the material evaporates very quickly without heating beyond the allowable range of so-called adjacent materials Energy is applied for a very short period of time such that "cold ablation" is possible. The undesirable liquid state of the material making the crater edge and splashes is almost completely avoided as a result. Any desired structure can be made in the computer controlling the laser system so that it is not important whether a surface structure for a water roller or an arm roller is made. For rollers, i. E. For their surfaces, for example, certain steels, hard metals or ceramic materials can be used.

10 to 16, several surface structures among various possible surface structures are shown. In each of the figures, the coarse structures (GPI and GMI) are the same as those shown in FIG. 3, while the superposed superficial structures are changed. The rhombus 21 shown in a rough structure includes a male ridge portion 22P and an arm groove 22M. An exemplary dimension is a lengthwise diagonal of 4 to 6 mm, more specifically 4.6 mm, and a diagonal line in the transverse direction of 1.5 to 3 mm, more specifically 2.0 mm, while the ridge and groove 22 ) Is equal to about 0.2 mm. In the enlarged view, the arm structure is shown on the left side of the figure, the water structure is shown on the right side, and the structures are shown from the bottom left.

As shown in the enlarged view, the microstructures (FP and FM) are formed on top of the rough structures GP1 and GM1, and the microstructures thereof change their shapes. As shown in Fig. 10, the microstructure (FPQ) is composed of a quadrangle. The pitch of the squares, i. E. The repetitive spacing, is about 0.04 mm. As shown in Figs. 17-20, the water and arm structures do not exactly coincide inversely with respect to each other in size and shape, but their shapes and sizes are slightly different from each other.

As shown in Fig. 11, the microstructures (FPD and FMD) are diamond-shaped instead of rectangular. The size of Fig. 11 is slightly larger than that of Fig. That is, the pitch of the microstructure is 0.07 mm, and the dimensions thereof may be smaller or larger than about 0.05 mm, for example.

As shown in Fig. 12, the microstructures (FPRh and FMRh) are rhombic. The size is the same as before.

As shown in Fig. 13, the microstructures (FPR and FMR) are round. The pitch of the microstructure is 0.07 mm.

As shown in Fig. 14, coarse structures GP1 and GM1 are shown without any microstructure. Such a structure is particularly suitable for producing a tactile structure that is not only very sensual but also has a cosmetic pleasure appearance. Signs in braille brackets or acoustically usable structures can be produced in this way.

As shown in FIG. 15, no superstructure is formed on the male rough structure GP1. On the other hand, the microstructure FM (Q, D, Rh, R) is superimposed on the upper part of a rectangular, diamond-like, rhombic or round type female rough structure GM1, Other decorations may be included.

As shown in Fig. 16, microstructures FP (Q, D, Rh, R) are superimposed on the male rough structure GP1 while the male rough structure GM1 does not contain any microstructure .

It should be understood that the illustrated embodiments merely represent a portion of the rough structure and all possible shapes of the microstructure. Accordingly, a number of other structures may be used, such structures consisting of some separable logos or logo types, or the like, on which microstructures may be superimposed. In order to create authentication features or other identifiable features that are not visible to the naked eye, the microstructures can be superimposed in a known manner.

Figures 17 to 20B are schematic diagrams showing some possibilities as to how the arm structure differs from the male structure. For finer surface and visualization, the surface structure is shown in a saw-tooth shape and enlarged so as to more clearly show the deviations.

First, in order to display the voluntary deviation, an error, that is, a manufacturing tolerance, must be specified. As mentioned above, one of the improvements in roller manufacture among other points is to manufacture a more precise and suitable structure for fine embossing. As a result, a small manufacturing process tolerance is generated. In this way, the tolerance is influenced by the surface of the rollers, among which the advantage of using a hard surface is advantageous. Thus, the rollers may be entirely solid metal rollers or metal rollers with a hard metal surface, and may also be entirely ceramic rollers or metal rollers with ceramic surfaces. All such materials are suitable for microstructural machining by laser systems. In most cases, it is advantageous to form a predetermined protective layer on the surface of the embossing roller.

For example, in the case of an embossing roller having a length of 150 mm and a diameter of 70 mm in a machining process using a laser system, error tolerance of 2-4 탆 in the rotational direction and +/- 2 탆 in the axial direction is preferable, , It is preferable that the error tolerance of 0.5 to 3 mu m at 0.1 mm tooth height is preferable. For two opposing toothed flanks forming an angle of 80 [deg.], An angular error of less than 3 [deg.] Is preferred. Thus, for new rollers, a maximum linear error of +/- 5 mu m occurs, so that the manufacturing deviation (deviation) can be about 10 mu m.

Since these values are strongly influenced by measurement and manufacturing, the linear deviation of the numerical structure arising from the 15 탆 and larger arm structures and the angular deviation of 4 ° can be regarded as spontaneous differences. The upper limit value of the difference value of the structure can be set in accordance with a condition in which mutual cooperation of the two rollers is not impaired.

The value of the spontaneous difference between the structures coupled onto the male rollers and the structures coupled onto the female rollers varies greatly depending on the materials being embossed. For example, the difference value for embossing a foil having a thickness of about 30 占 퐉 is about 40 占 퐉, and the difference value is about 120 占 퐉 in order to emboss a card stock having a thickness of about 300 占 퐉.

As shown in Figs. 17 to 20B, it is advantageous from a structural point of view that the rollers are arranged at a predetermined distance from each other. In the pin-up / pin-up roller system, a constant spacing of the depressed shape in one of the rollers, i.e., a degree of diameter reduction by 0.02 to 0.2 mm in the width of the foil, / 161002 A1.

As shown in FIGS. 17 to 20B, the diameter of one of the rollers, preferably the diameter of the water rollers, is reduced by at least 0.02 mm over the width of the foil for the remaining rollers. In this way, a more uniform embossing is created. As shown in Figs. 17 to 20B, such depressions or reduction in diameter of the water rollers are indicated by "S".

Alternatively, in addition to the depression, other spacing adjustment means, for example electronic or mechanical spacing adjustment control means, may be provided.

As shown in Fig. 17, the female roller M23 has a surface structure SM23, the two opposite flanks of the indentation stations have an angle? 23, the water roller P23 has a structure SP23, And the angle beta 23 is smaller than alpha 23. These angles have values of 10 [deg.] To 110 [deg.] And have a difference of 4 [deg.] Or more.

The arm roller M24 shown in Fig. 18 has an arm structure SM24 whose groove N24 has a plane groove bottom. The water roller P24 has a surface structure SP24 in which the tooth T24 has a rounded shape.

The female roller M25 in Fig. 19 is the same as the surface structure SM24 described above, and the tooth T25 of the water roller P25 has flat tips.

20 shows another preferred embodiment in which the female roller M26 has a surface structure SM26 with round grooves N26 and a tooth T26 at the surface structure SP26 of the water roller P26, Is formed in a round shape, but has a smaller radius than the round groove N26.

20A shows another preferred embodiment in which the arm roller M27 has a surface structure SM27 having a rounded groove 27 and has a surface structure SM27 in which the surface structure SP27 of the water roller P27 T27 are made in a round shape, but have a smaller radius than the groove N27.

20B shows another preferred embodiment in which the female roller M28 has a surface structure SM28 having a rounded groove N28 and the tooth structure T28 at the surface structure SP28 of the water roller P28. Has a rounded shape, but has a smaller radius than the groove N28.

A modification of the embodiment according to Figs. 21 to 35 is made in accordance with the principle that the arm structure does not exactly coincide with the male structure in size and appearance. This variant is in accordance with roller pairs comprising areas for making creasings. Creasing may be used for decorative purposes. Such crushing is useful when it is difficult to enclose an object such as a tobacco product or the like with a foil without being subjected to the on-line packaging process.

21-35, an apparatus 80 having a pair of rollers 81P and 81M is shown, the water roller 81P is driven by a drive 6 and the gear wheels 39,40 ). ≪ / RTI > In the illustrated exemplary embodiments, all rollers have a plurality of creasing, e. G., Four creasing areas 82 (e. G., ≪ RTI ID = 0.0 & ). ≪ / RTI >

Thus, the creasing areas of the pair of rollers P81R1 and M81R1 of Fig. 21 have a grid structure "R ", in which the grids of the water rollers protrude and the grids of the arm rollers are recessed. In order to act as a creasing, these structures are each more protruding or recessed than the triangular structure. This structure applies to all illustrated creasing structures.

 Contrary to each other, the creasing areas of the pair of rollers (P81R2 and M81R2) in Fig. 22 are formed with a recessed grid structure on the water roller, and the protruded grid structure is formed on the arm roller.

The grid structure of the creasing areas P81R3 and M813 of FIG. 23 is consistent with the structure of FIG. 21, except that the creasing area does not extend to the edges of the rollers.

The crushing areas of the pair of rollers P81LR1-3 and M81LR1-3 in Figs. 24-26 have a radially arranged ridge W projecting from the male rollers or from the female rollers, The indentation marks are formed. The creasing area formed on the pair of rollers P81LR3 and M81LR3 is shorter than the length of the roller.

The crushing areas of the pair of rollers P81LL-3 and M81LL1-3 in Figs. 27 to 29 include ridge portions L arranged in the longitudinal direction protruding from the water rollers or arm rollers, and on the arm or water rollers, The indentation marks are formed. The creasing area formed in the roller pair (P81LL3 and M81LL3) is shorter than the length of the rollers.

The creasing areas of the pair of rollers P81Z1-3 and M81Z1-3 of Figs. 30-32 include teeth Z projecting from the male or female rollers, and the male or female rollers are formed with indentation marks thereon . The creasing areas formed in the pair of rollers P81Z3 and M81Z3 are shorter than the lengths of the rollers.

The creasing areas of the pair of rollers (P81K1-3 and M81K1-3) shown in Figs. 33 to 35 have rounded cross-sections, and the teeth K inclined in the direction of the tips thereof and projecting from the male or female rollers And the corresponding indentation marks are formed on the female or male rollers. The creasing areas formed in the roller pair (P81K3 and M81K3) are shorter than the roller length.

Since the structure of the female rollers is not the same as that of the male rollers in terms of the structure, size and outline of the male rollers, as shown in the schematic diagrams of Figs. 17 to 20B, Since the shapes of the joining structures are different from each other, the distortion of the foil between the two rollers is reduced, thereby greatly reducing or eliminating the twist of the embossed foil in the direction transverse to the plurality of embossing types.

This feature provides the following advantages. That is, despite the need for high pressure between the rollers, it is possible to prevent the formation of holes in the foil and the subsequent process in the packaging line can proceed smoothly. Such rollers can be used in a form similar to the pin-up / pin-up rollers known and often used in the on-line process in the packaging line. In the case of a structure in the form of embossing or web-like arrangement of tipping, it is desirable to mutually offset the structural elements on the two webs.

Figures 41-43 illustrate three pairs of rollers, which enable simultaneous embossing for certain types of logos and for forming a portion that is cut and cigarette packed Allows you to create creasing. The rollers as described above were manufactured according to the methods described above. The cut portions Z81 to Z83 in Figs. 44 to 46 coincide with the roller pairs 83P, M to 84P, and M in Figs. 41 to 43, respectively.

In the rollers described above, the merits of the separable manufacture of the water rollers and the arm rollers having an indicated deviation obtained according to an exact match are clear. Such a case is suitable for a long creasing tool which extends in the radial direction or in the axial direction relative to the entire roller or parts thereof and is arranged in succession.

Fig. 41 shows a pair of embossing rollers 81 having a matrix roller 81P and a matrix roller 81M which do not exactly coincide in size and shape with the petri- zus roller. The rollers are provided with numerous crushing tools 81FGP, M and 81FTP, M, which are made up of radial creasing strips provided with a predetermined code, an Arabic numeral, etc., On the one hand, the creasing tools 81FGP, M are arranged radially as a whole and on the other hand the other creasing tools 81FTP, M are partly radiating . Gear wheels 39, 40 are shown in the figures. A corresponding cut portion Z81 is shown in Fig. 44 and includes crushers 81G and 81FT.

Figs. 42 and 45 show preferred embodiments of Figs. 41 and 44. Fig. The pair of embossing rollers 82 are provided with a PET-RISC roller 82P and a matrix roller 82P. The rollers have a number of creasing tools 82LP, M and 82LP, M as well as logos 82LP, M, so that the creasing tools 81FLP, M on the one hand are arranged radially, The other creasing tools are arranged longitudinally. And gear wheels 39 and 40 are shown. The cutting portion Z82 is shown in Fig. 45, and the creasing members 82FR and 82FL are shown.

43 and 46 illustrate another preferred embodiment, in which the logos do not cover the entire foil but only partially cover it. The pair of embossing rollers 83 are provided with a pattern roller 83P and a matrix roller 83M. The rollers have logos 83LP, M and numerous crushing tools 83FRP, M and 83FLP, M so that the creasing tools 83FRP, M on the one hand are arranged radially and, on the other hand, The other creasing tools 83FLP, M are formed across each other in the longitudinal direction. Corresponding cuts Z83 are shown in Fig. 46, and corresponding creases 83FR and 83FL are shown. And gear wheels 39 and 40 are shown, and in an embodiment of the present invention, positioning markers 27 and 28 are shown in Figs. 7 and 8. Fig. Markers are also formed on the cutout Z83.

Prior art water rollers and female rollers have always been made in pairs. When one roller of the rollers needs to be replaced, inevitably one of the rollers has to be replaced as the female rollers are formed on the male rollers in the same size and shape to be opposite to each other. According to the method according to the invention, which is possible individually, it is possible to exchange the male or female rollers separately, which is an important advantage in terms of designability as well as when there is a difference in wear behavior.

Quick change devices for everyday pin-up / pin-up rollers are disclosed in US 6 665 998 by the applicant of the present invention and have been used in the majority of all tobacco paper embossing devices worldwide after development. In these devices, the axle of the counter roller is movable in all three axis coordinate directions to enable synchronization of the embossing rollers.

The quick change device 30 of Figures 36 and 37 includes a housing 31 having two seats 32 and 33 and configured to receive each of the roller supports 34 and 35. The roller support portion 34 has a function of installing a water roller 36 driven by a drive portion 6 that is not represented and the roller support portion 35 has a function of installing an arm roller 37 . 20, the roller support portion 34 is inserted into the seat 32, and the roller support portion 35 is inserted into the seat 33. As shown in Fig. The housing 31 is closed by a closure plate 38.

In the present example, as in the examples according to Figs. 3-8, the female rollers are driven by a follower roller 36 via a gear wheel 39 located at one end of the rollers. To achieve high precision in synchronization, the gear wheels are made very precise. However, other synchronization means such as, for example, an electric motor may be used.

37, the roller rotation axis 41 of the water roller 36 is rotatably and visually supported by the needle bearing 42 in the roller support portion 34 on the external drive side located on the left side in the drawing And is rotatably supported by a ball bearing 43 on the other side. Both ends of the roller support are fitted and fixed in the openings of the housing and the closure plate. For precise, clear insertion and positioning of the roller support in the housing, the bottom of the housing has a T-shaped groove 48 in which a T-shaped And the key 49 of the keypad 49 are matched with each other.

The roller rotating shaft 50 of the female roller 37 is supported in the wall 51 of the roller supporting portion 35 and on the other side is supported in the second wall 52 of the roller supporting portion . The edge portions 53 of the cover 54 of the roller support are molded in the form of keys insertable into the T-shaped grooves 55 in the housing 31 and one of the side walls 51,52 The side wall 51 is engaged into the corresponding opening 56 in the housing wall.

The illustrated arrangement in which the second roller is driven through the gearwheel requires a process of adjusting the roller after it has been installed in the roller support. Such a configuration can be achieved by the gear wheels.

38, the housing 60 does not have a closure plate, but has a low semicircular opening 62 and a wall 61 having a rectangular open top 63. In the embodiment of FIG. . The two rollers and roller supports are the same as those described above, and the T-shaped grooves for receiving the T-shaped groove 48 located in the arm roller support and the housing bottom are also the same. According to the figure, the rear opening of the housing 60 is similar to the front openings 62 and 63. In this embodiment, the roller supports are fixed clearly and precisely within the housing.

39, quick change device 64 has two identical roller supports 65 and 66, each with a T-shaped key 49, and one roller support 65 And the other roller supporting portion 66 is fixed to the upper portion of the housing 67. The two roller supports are secured by a closure plate 68 having an opening 69 for receiving one roller end.

In the exemplary embodiment of FIG. 40, quick change device 70 includes two opposing (76, 77) of two embossing cylinders (36, 37) having gear wheels (39, 40) on each of the two opposing side walls As shown in Fig. In the simplified diagrammatic view, first the roller is inserted into the housing, and the rotary shaft is inserted and fixed. In this exemplary embodiment, quick changes are possible without roller supports.

2, 8, 82: rollers
4: Toothed
5:
6:
7: Embossing roller device
9: Indentation marks
12: Laser
13: Control circuit
14: deflection unit
15:
16: deflection mirror
17: Engraving unit
18: Position detector
19: Rotary work piece
20:
22: Home
27, 28: positioning mark
30, 59, 64, 70: Quick change device
31, 60, 67, 71: housing
32, 33: sheet
34, 35, 65, 66: roller supporting portion
36: Water roller
37: Female roller
38, 68: Closure plate
41, 50:
42, 43: Bearings
46, 47: opening of the closing plate
48, 55: T-shaped groove
49: T Shape Key
51, 52, 61, 72, 73: wall
53: edge portion
54: cover
56, 62, 63, 69: openings
76, 77:
SL: Helical line
P11, P11B, P11E, P11L, P11W, P23-28, 36, P81-1-3, LR1-3, LL1-3,
M11, M11B, M11E, M11L, M11W, M23-28, 37, M81-1-3, LR1-3, LL1-3, K1-3:
GP1, GPB, GPE, GPL, GPW, FP-Q, D, Rh,
GM1, GMB, GME, GML, GMW, FM-Q, D, Rh,

Claims (24)

A method for making a set of embossing rollers for an apparatus for embossing packaging materials having two rollers, said embossing roller set comprising a number of male faces having a male face structure comprising structural elements and / A female roller having a male roller and a female surface structure coupled to the surface structure of the male roller for the embossing action together with the male roller,
The embossing roller set is designed to use an embossing roller for microstructure embossing in an on-line process,
Here, the coupled cancer surface structure is produced separately from the previously produced or physically existing male surface structure, so that it can be determined from the agreement between the male surface structure and the female surface structure, , ≪ / RTI >
Wherein the profile of the roller surface structure for a microstructure embossing process having an overall linear error of less than +/- 15 [mu] m and an angular error of less than 1 [deg.] Is also contoured. 2. The method of claim 1, wherein the surface structure of the embossing rollers is such that during the on-line embossing process, which is regularly arranged in the packaging line and of a uniform embossing pattern, the residual tension in the packaging materials in the direction transverse to the direction of travel of the rollers Is not made. ≪ Desc / Clms Page number 13 > 3. The method according to claim 1 or 2, characterized in that the surface structures of the embossing rollers are configured in such a way that the embossed foil can have an embossing pattern capable of recognizing the tactile sense. Way. 4. The method according to claim 3, wherein the tactile perceivable embossing pattern comprises a special code such as braille or voices available for signs. Way. 5. A method according to any one of claims 1 to 4, characterized in that on one hand the size of the structural elements of the water roller and on the other hand the size of the structural elements of the arm roller to be engaged, Of the embossing rollers are offset from each other by a predetermined distance. 6. The embossing rollers according to claim 5, characterized in that the volumetric deviations of the linear dimensions of the structural elements of the rollers from each other are greater than 15 [mu] m and the angles of the edges of the structural elements deviate by more than 4 [ ≪ / RTI > 7. A method according to any one of the preceding claims, characterized in that during the passage of the foil web between the embossing rollers, in order to reduce the transverse tension in the embossed material, the embossed logo structure Wherein the logo structures of the embossing rollers are arranged and designed such that at least two sections can be embossed on the foil web, such that the logo structures of the embossing rollers are offset and offset in the advancing direction with respect to the respective logo structures on the remaining remaining sections ≪ / RTI > 8. A device according to any one of the preceding claims, characterized in that protruding positioning marks (27) are formed on the water roller and recessed Are positioned on the female rollers, or vice versa. ≪ Desc / Clms Page number 13 > < / RTI > 9. A method according to any one of claims 1 to 8, wherein the surface structure of the embossing rollers is made by a femto or picosecond laser system. Way. 10. The method of claim 9, wherein a rough structure and a superposed microstructure are formed on the surfaces of the rollers. 10. The method of claim 9, wherein areas on the surface of the paired rollers are made to create creasings, the protruding creasing structures are made on one roller, and the grooved creasing structures Wherein the other creasing structures are formed on the other rollers such that the creasing structures are each more protruding or more grooved than the other structures. 12. The method according to any one of the preceding claims, wherein one roller of the embossing rollers is manufactured at least over the width of a web of packaging material having a diameter decreasing by 'S' relative to the remaining embossing rollers , Wherein said 'S' value is greater than 0.02 mm. 13. The method of any one of claims 1 to 12, wherein the packaging material is suitable for packaging food and medicines, or the packaging material is selected from the group consisting of tipping paper, tobacco paper, innerliner or inner frame paper, Or a card stock for packaging paperboard or tobacco products. ≪ Desc / Clms Page number 16 > A method of forming a water roller (P11, P11B, P11E, P11L, P11W, P23-28, 36, P81-R1-3, LR1-3, LL1-3, K1-3 And an arm roller M11, M11B, M11E, M11L, M11W, M23-28, 37, M81-R1-3, LR1-3, LL1-3, K1-3, (GM1, GMB, GME, GML, GMW, GW, GW, GW and GW) provided on the water rollers and the structural elements (GM1, GMB, GME, GML, FM-Q, D, Rh, R are not congruent with respect to each other, but are linearly and angularly displaced by more than 1 占 by an amount of more than 15 占 퐉. 15. The set of embossing rollers according to claim 14, wherein the surfaces of the rollers are at least composed of a metal, a cemented carbide or a ceramic, and the surface has a protective layer. 16. A method according to claim 14 or 15, characterized in that one roller of the embossing rollers is connected to another embossing roller by synchronizing means, preferably gearwheels (39, 40) Roller set. 17. The image forming apparatus according to any one of claims 14 to 16, wherein the two embossing rollers (P81-R1-3; LR1-3; LL1-3; K1-3), (M81-R1-3; LR1-3 ; LL1-3; K1-3) comprise mutually coinciding regions having a protruding or groove-shaped structure to create a creasing region, these structures being more protruding than the other structures, Or is made into a more grooved shape. Characterized in that the embossing device is provided with the use of an embossing roller set defined in any one of claims 14 to 17, characterized in that the embossing device is integrated directly into the packaging line on-line using a robot, Use of roller sets. 19. Use of an embossing roller set according to claim 18, characterized in that the embossing rollers are preferably arranged at a predetermined mutual distance greater than 0.02 mm. 20. A set of embossing rollers according to claim 18 or 19, characterized in that the embossing rollers are arranged in a quick-change device (30, 59, 64, 70) designed so that the embossing rollers are individually and independently interchangeable with respect to each other Characterized in that the embossing rollers (36, 37) are designed to be individually and independently replaceable with respect to each other. 21. The apparatus of claim 20, wherein the embossing rollers (36,37) are rotatably supported within respective roller supports (34,35,65,66), the roller supports being fixed in position in the quick change housing Characterized in that one end of the water roller support (34) is supported by a needle bearing (42) and the other end is supported by a ball bearing (43) Use of. 22. The apparatus according to claim 20 or 21, wherein a lower portion of one of the roller supports (34, 65) is provided with a key (49) Is provided with a groove (48) corresponding to the embossing roller set. An apparatus according to claim 22, characterized in that the upper part of the other roller support part (66) is provided with a key (49) and a groove (48) is formed in the upper part of the housing (67) or an edge part T-shaped key, and the upper side of the housing (60) has a T-shaped groove. The quick change device (70) according to claim 21, wherein each quick change device (70) has two openings (74, 75) having fastening means for receiving and fastening the rotary shafts (76, 77) of the rollers Characterized in that it comprises a housing (71) in which two opposing walls (72, 73) are formed.

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