HUE033181T2 - Process and device for producing a lignocellulose-containing sheet-type material - Google Patents

Description

Ihe present invention relates to a method for producing a 1 i g ire c e 11 u i o s e - c ο u t a i η i n g sheet- type materiel, for example & woca-baaed sheet/ wherein a sheet-type pressed body with a top principal surface, a bottom principal surface and at least one narrow side surface is produced by pressing 11gnocellulose-con taining material provided with binder under raised pressure and at raised temperature.

Furthermore, the invention relates to a device for producing: a iignocelfaloss-contalnlng sheet-type material, for example a wood-oasod sheet, with s pressing device which is configured for the pressing of small-sires material, in particuiar particles such as wood chips, wood strands and/or wood fibres glued with a binder, under raised pressure and at raised temperature, and for producing a pressed sheet with a top principal surface, a bottom principal surface and at least one narro w side surface.

Moreover, the invention relates to a iiqnnoeilulose··· containing shoot:-type material, for example a wood-based sheet, which is produced by a corresponding method.

Finally, the invention relates to a use of a iignoceiluioss-comtaining sheet·"type material, for example a wood-based sheet, which comprises a sheet-type pressed body with a top principal surface, a bottom principal surface and at least one narrow side surface. A 1 igno c e 1 1 u.1ose--·contalcing, sheet-type material is understoco to mean a commoner;t which predominantly contains wood particles and/or dignified plant material w.g. straw;. Wood particles can be, amongst other things, wood chips, wood strands (long wood shavings;, wood fibres and wood dust, With the addition or a binder, sheet-type materials (sheet-type components) are produced by pressing the 1 i one ceil o 1 o s e ··· co n t a i n i n q material, in particular the wood particles.

Purina or after production, the sheet-type components, for ex amp 1 e sheets made of wood-based matériáig are provided with a rn.rh.rg which has an identifying character< The marking should for example provr.de information with regard to the properties that the sheet-type component possesses, the quality it has, where, when and by whom it has been manufactured and the purpose for which it is intended, vhrrocs methods are known from the prior art for providing a sheet- type component with a marking,

For example, it is possible to apply an adhesive label on a part of the sheet-type component. An adhesive label comprises an upper material of paper and ah adhesive layer applied at the underside, The adhesive label can be printed wi th the desired data. For the application of the adhesive label, all the: surfaces, i.e. the front: side htop principal surface), rear side (bottom principal surface) and the side edge (narrow: surface) , of a sheet··· type component can in principle be considered for the application of the adhesive label. This type of marking, however, is bound up with various drawbacks. The provision of an adhesive: labor as an addxtionar data carrier is cost-intensive, rurthermore, the application of adhesive labels on the corresponding section or the component is associated with high time consumption. It is possible that the adhesive label so for example if there is insufficient adhesive effect or due to external influences,· become detached again, as a result of which the marking is lest. If the adhesive labels are applied on the front side or rear side of a sheet"'type component; they possibly have to no removed again, be feme the use of the sheet-type component, in order to avoid aesthetic impairment of the front side: or rear side. This is a drawback for example writ. laminate-coated panels, since a .specific/ preferably aesthetically perfect, pattern is usually intended to be visible on their front side.

Moreover, the stackahility of sheet-type components which carry an adhesive label on the front or rear side it limited. On the one hand, a raised region is formed by the adhesive label, which can lead to instability of the stack in the case of a plurality of sheet-type components arranged in iwo-dimensional contact with one another due no the contact surface thus being reduced. On the other hand, a dead volume is created by the raised region, which, increases the space requirement of the stack beyond the sum of the thicknesses of; the individual sheet-type components, The application of an adhesive label on a narrow surface of a sheet·-·type component, on the other hand, Is unfavourable, since only a very small area for application is available on a side edge. Moreover, the application of an adhesive label on a aide edge may also be made more difficult if the side edge comprises a profile,

Furtkermore, it is known to print a marking on trie front side or rear side of a sheet-type component. However, a print most also he removed again before the use of the sheet-type component, in order to avoid aesthetic impairment. Moreover, a print comprising ink must first be dried, for example before stacking of the printed: sheet-type components takes place, because otherwi se there is the risk of the printing ink being smudged and of the marking thus being made unidentifiabi e and/or of adjacent sections of the front side or rear side being stained .

Methods with which durable, i.e. non-removable, markings can be provided on the front or rear side, for eramelo by burning-in by means of a laser, are not preferred, since they take up a lot of time and are only -expedient if the aesthetic form of the front Or rear sides is unimportant for the use of the sheet-type component. h further possibility for marking a sheet-type corponent consists in applying the desired data in written characters (tetters, numerals, etc,), i.e. in plain text, oh a side edge or a sheet-type component, The reading direction of the plain text runs in this case along the extension direction of the side edge on which the plain text is applied. This mode of procedure, however, is only practicable if the sheet-type component has a thickness sufficient for the application of plain text in a legible sice. This: means, on the one hand, that the height of the written characters has to be smaller than the thickness or the sheet-type component and, on the other hand, that the written characters have to be arranged centred crosswise to the extension direction of the side edge in order to avoid 1 rape! rrent ox the written image -

Especialiy when sheet-type components made of wood or a wood-baaed material hare a small thiciness - it is scarcely possible on account of the serfsee quality (surface roughness) to apply a sequence of fine written characters legibly on the side edges.

It is known from DE 10 2(107 Oof 029 A1 to arrange: a plurality of sheet-type components which have a thickness of less than $ mm in two-dimensional surface contact to form a stack, in which the principal surfaces of adjacent components touch each other and the narrow side surfaces of the components together form a lateral surface of the stack* This lateral surface of the stack is provided, for example printed, overaid with a marking. Each narrow side surface is intended to contain a part of the marking. The individual narrow surfecus are so thin that they cannot be printed individually, It is not therefore possible to provide: individual sheet-type: components with individual markings which relate to, r . e, identify, only these individual components. The markings form a barcode, which runs over the entire narrow surfaces that form of a narroar side of the stack.

Such a barcode, however, has the drawback that it has relatively large dimensions: compared with the data quantify encoded with it, A further problem is that, due to the inevitable .absorption capacity of the wood pa:: hi -lex at the narrow side surfaces, a marking applied, for example printed, on the narrow side of the stack is then no longer identifiable, at least no longer completely identifiable, on the some of the narrow surfaces. Furthermore, it ray happen that martinas:, if they are applied too fine, cannot then be satisfactorily identified on account of the surface structure '(typography} . Farts of the raarking can even disappear completely in the course of time, for example if wood-based material breaks away at the edges in the presence of bracing. Hoi:cover, all the sheets of the stack have the same Barking, so that individual marking is not possible. Finally, the Barking does not become possible until &amp; stack of a plurality of sheets is formed.

It is further known from. ΌΕ 10 £010 053 Oil hi to provide a sheet-type component with an RFID transponder, in which the data concorning the component (in particular I den ti tying the component; are stored. I he roe of such an. RFID transponder is expensive and cost-mi.ensive. Moreover, this is not suitable for every type of sheet, every sheet thickness and every use of the sheet.

It is an object of the présére invention to produce a llgnoceilnObse-contaio-ing sheet-type material* which permits in a straightforward manner the linking of data relating to the iignoceilulose-OQntaining sheet-type material with, the respective 1 ίgnοoe 11 u 1 ose-coctalni.ng sheet-type material,

The object derived and indicated above is solved according: to a first teaching· of the present invention by a method for producing a 11gnoce1ίuiose-centssning sheet-type material according to claim 1.

When.f in the present descripti on, sention is made of a raised temperature and a raised pressure, this is intended to mean than the pressure (pressing pressure, contact pressure) is higher than the ambient pressure and the acting temperature is higher than the ambient temperature,

In ether words, the edge strip is constirated such that it can be printed with a resolution of at least 60 dpi (dots per inch), preferable at least 120 dpi, particularly profarab!y at least 100 dpi, i.e, the optical code is printed or imaged in this resolution on the edge strip. The roughness (roughness according to Bendtsen, Parker Print Surf and/or Bekk; of the edge strip at least on one aide, in particular on the printed side, in particular on both sides, is less than that of the narrow surface: on to which the edge strip is applied. Due to the fact that an edge strip,· which can be printed with the previously defined resolution and/or which has a roughness on at least the printed side that is less than that of the narrow surface, is applied on the narrow side surface or on one of the narrow side surfaces, be. on a surface connecting the principal surfaces of the sheet-type pressed body (the pressed sheet), a narrow-side surface is created which can be printed better than the uneven and porous: narrow surface of the pressed body. As mentioned, the roughness at least on one side of the edge strip is less than that of the narrow surface of the preseed body. This side is the side which is printed with the code and subsequently points away from the pressed body. It is therefore no longer necessary for the desired data relating to and in particular identifying the iignocelluiose-containina sheet-type material, for exampie data concerning the properties; the quality, the processing steps that hare taken place and/or ere due to take place, the processing 'Location, the processing tine, the processor, the intended use, legally required markings such as the €E mark or the timber certification or timber origin marks (PEFC, F3C) etc,, to be printed on adhesive labels and for the letter then to be glued onto the given component or the i ignoceli close-containing sheet-type material; if an. adhesi ve label is glued onto one of the principal surfaces according to the prior art, this represents, as mentioned, an. aesthetic impairment of the prioripa 1 surface, and if the adhesive label is glued onto: the narrow surface, insufficient adhesion is produced1, According to the invention, on the other hand, an edge strip is glued to the n&amp;nos surface in such a. way and the edge strip is constituted in such a nay that it can cover, in. a cur able manner, the narrow surface of the pressed body and therefore the roughness of the narrow surface, According to an. embodiment, it is conceivable for the adhesive, for example synthetic resin or glue, to penetrate into poxes (1,e. the Intermediate spaces between the fibres and filler particles of the material) of the pressed body and/or for unevennesses in the surface of the pressed body to be filled and thus levelied out, as a result of which optimum bonding between the edge strip and the narrow surface of the pressed body is achieved. In particular, the edge strip can be pressed opto the narrow surface under raised pressure (contact pressure) and at raised temperatare,

As: a result of the smoother narrow-side surface which the 1 r gno c e 11 u 1 © s e - con t ax. h ing sheet-type vast or ial acquires by means of the edge strip and which can be printed in a higher resolution compared to the original wood surface, much more data as code can be applied on the narrow surface than in the case where the narrow surface is not provided with an edge strip» The code can thus be printed on the surface in a much higher resolution and also very much smaller than is possible in the prior art. As a resull of the possibility being created of printing in a particularly high resolution, modern types of code, for example matrix cooes, which permi t a high információn density, can also he used. This in turn creates the possibility of applying much more data concerning processing steps, intended uses etc», including successively one after the other.

Finally, each lignoeeliulose-containing sheet-type material can be linked and printed with individual data in the inventive manner, which simplifies the hand!ing of the iignoceiluiose-containing sheet-type materials during and after production sigaificantly compared to the prior art.

According to an embodiment of the method according to the invent ion, the edge strip is provi ded or produced in a thickness of at most 3 mm, particularly preferably at most 1 mm. Such a thickness is completely sufficient to fill and thus level out the unevennesses caused by the roughness on the narrow side of the pressed body and to create at flat surface that can be printed on in the optimum moaner, It should be noted that the thru mess of the edge strip, after the application of the edge strip: on the narrow surface of the pressed body, may at least in sections be less than previously and therefore less than the aforementioned values, this being caused by the fact that the material of the edge strip is pressed into the pores or depressions forming toe roughsess or unevenness -

According to a further embodiment of the method according to the mvcntiorn the edge strip can also be made availatde as material in roll form,· which can be brought about in a straightfermard manner especial1y with the previous!y described thickness values of the edge strip» A material in roll form, i . e. a rolled"up edge strip,,· can he transported particular .Ip easily and can be fed (after being unrolled) to the narrow side surface of the pressed body v

According to the method according to the invention,· a material strip comprising one or more layers of 00010-impregnated paper can be provided as an edge strip. In particular; the layer or the layers in the material strip are Ura ív. paper, a type of paper with the maximum possible strength. Kraft paper Is made almost 100 % of cellulose fibres, only starch« alum, and glue being added to achieve surface effects and increases in strength. Long-fibre softwoods, for example spruce or pine, are particularly well suited as a raw materiéi (source; http://de»wilm»pedia»cfg/wx}:i/kraftpapier) . As a materia.! for the edge strip, ASS (acrylonitrile butadiene styrene), PP (polypropylene) , PYC (polyvinyl chloride) and/or melamine cah also be used. It is also conceivable to provide or produce the edge strip from a plurality of the previously described materials, hr edge strip made of such a. material can be joined particularly well with the narrow surface of the pressed body, especially under raised pressure (contact pressure) and/or at raised temperature, ara is also relatively insensitive with respect to further processing steps of the 1 i g rent e 11 u i o s e - c on t a i n i n g sheedtype material, in particular in: the edge region. In other words, a 1 igncce 11 uiose··containfug sheet-type matériái can be fed without further action to an edge processing operation, without the risk thereby arising of the edge strip and therefore the carrier for the optical code becoming unusable,

The edge strip can also be provided with laser-seise c.· ve additives (particles}, in particular laser-selective pigments, baser-selective means that the additive or the pigments, when the laser beam (the laser light} strikes them, convert the laser light into heat, as result Of which, the temperature of the additive or the pigments increases abruptly* The consequence is that the colour of the immediate vicinity of the partioles of the add!five or the pigments changes permanently (source: . https / /magasin ,merek.,do/do / life and quad.ifcy/functloheile pigmenté/1 avert laird .ltd} . it correspond ing laser -selective additive can be provided as a pigment or granulate or can be introduced into the material of the edge strip. In principle, it is also possible for the laser-selective additive itself to change colour as soon as the additive particles are hit by the laser light; in this case, the material (the matrix} into which the pat tides of the additive are embedded does not in itself have to be capable of changing colour due to a laser light. Such an embodiment of the edge strip is particularly advantageous when, according to an erdodiment of the method according to the invention, the optical code is printed by means of a loser printing íatóhod* such as κι 11 be vaunt ion ed below:, Through the selection of the particles which form the laser-selective additive;: the marking time (pr int ing time) and the colour of the printed code can also be ad j ested.

As already mentioned above, the edge strip has, according to the invention, a roughness which is less than that of the narrow side surface of the pressed body, According to a further embodiment of the method, provision is made ouch that the roughness according to Bendtson amounts to at most ISO ml/min, preferably at most 200 mi/ruin, particularly preferably at most led sl/min> and/or the roughness according to Parker Print turf (BPS) amounts to at most 10 pm, preferably at most S pm, particularly protorably at most 2 pm, and/or the roughness according to Sekk amounts to at least 10 a, preferably at least 50 η# particularly preferably at least IBS s.

The roughness is a term from surface physics, which denotes the unevenness of the surface levői (the depressions forming the unevenness arc filled or levelled out by the material of the edge strip, in particular when the edge strip is pressed onto the narrow surface under raised prescure), Various measurement methods are known for determining the roughness. The ,so-called roughness according to Benőimen denotes the value for the rate of the air flow which passes between a measuring ring of a measuring head and the sample surface and which arises with a fixed excess prepsure. The air volume flowing out per minute is obtained as a result. The so-called roughness according to Parker Print Bnrf (PBS roughness) is also determined by an air flow measuring method, wherein an air flow is ascertamed between an annular measuring no ay ana. cue sairyie, war on axes oa a naro rubber sheet. In the measurement: method according to Bekkf the sample id pressed on a glass ring with a rubberised stamp and the elapsed címe is measurad that &amp; defined air solame required to pass through the gap between the sample surface and the glass plate. The space beneath the glass ring is acted upon by a vacuum. The raise thus ascertained is the so-called rougnness according to Sekk. All the methods provide a measure for the smoothness or roughness of the surface of a workpiecév for example an edge strip ·sources: M, Lachfhalery w, Bauer. '4aauigtolt und Topográfia -- Bin Vere leien unterschíedllehet dessver rahrerd , http://de. wi k iped la.org/w iki/rauhei t}. dith the previously defined values for the rougnness of the surface of the edge strips a particular iy good quality of the print/ f.e. of the printed opt:leal code,· is obtained, The latter can fee printed in particularly high pesblaflou/ which enables a high density of data per unit area to be achieved.

According to another embodiment of the method according to the invent ion,· the edge strip ib applied only on a part Of the narrow side surface. Thus, it fa also conceivable for the edge strip not to cover the entire narrow side surface of the pressed body. It is also conceivable for the edge strip to be provided only in a region which/ in a subseguent processing step/ Is not subjected ho any processing or at least no processing influencing the edge atrip and/or the optical code, fa principle/ however/ it would also be conceivable to arrange the edge strip precisely in a region which is processed in a processice step, in particular the last processing step/ in such a way that the edge strip or at the least the optical code is removed or covered; in this case? the optical code serves in particular to display data which relate to and/or Identify the 1ignore1iclose-containing sheer-type material up to the prosessang step through which the optical code is removed or covered. It the latter case,- the optical code would then subsequently no longer he visible, which ray be desired/ amongst other things for optical reasons/ for example when the 1ignoce11alose-containing sheet-type material is to arrive at the end consumer as part of a piece of furniture,

An edge strip, such as can be provided according to the invention;,· can preferably he fitted to both longitudinal edges of the sheet-type pressed body and be printed with be said optical code/ In the case of the pressed body, the principal surfaces whereof are rectangular, longitudinal edges are intended to mean the two longer narrow surfaces. If an optical code, in particular the same optical code, is present on both longitudinal edges of the pressed body, it is ensured that a sheet stack comprising a plurality of sheets Ísheet-type materials? produced by the method according to the invention or an individual sheet (sheet-type material): produced by the method according to the invention can always be identified from a side from which the sheet stack or the sheet has been taken up or set down by a Stacker truck. The optical code can be provided at a point of the edge strip or the longitudinal edges which can he detected from the position of the stacker driver by means of a manually operated reading device or automaticaliy by a reading oevice tinge to the stacker truck, Intern&amp;r avows of goods can tiiös be detected, very easily.

According to another embodiment of the method according to the invention., the edge strip is applied with a length which corresponds at most to ISO I, preferably at most 12 S %, partion iarly p infer a cl y at most 110 % of the length of the optical cede. In addition or alternatively, it is also conceivable for the edge strip to be applied with a width which corresponds at most to ISO I, preferably at most 12S %, particularly preferably at most 110 % of the width of the optical code. The length or width cf the optical code is defined as the distance between she points farthest removed from one another· i.n the given dimension {length, widthi and which are still part of the code. The area for the applies cion of the optical code can thus be red viced to a minimum., It is preferable if an edge still remains between the outer points of the optical code and the edge of the edge strip, as a result of which any damage to the edge of the edge strip cannot lead to illegibility' of the code.

In particular, the optical code can be supplemented by a further code segment once or repeatedly, each time after a time interval, in particular each time after a processing step of the pressed booy, It is thus conceivable that, after the production of the pressed body, :1, e, after the pressing:, a first code segment can be printed on the edge strip which contains data for subsequent processing stops or intended uses. After a processing step, a further code segment can then be added an the edge strip which contains data concerning the processieg stop that has lust taken place or concerning a subsequent, processing step, seen code segment peersr&amp;oay already forms in itself a complete optical cocáé according to ide preceding and following description*

According to the method according to the invention, the optical code corresponds to data or dataseta which are stored in a data processing system and which relate to and in particular identify the 1 i g η o c e 11 u 1 o s e ·-- c ο n t a i n .1 n g sheet·" type matériái. In other words, a cor responding dataset is saved or stored in a, in particular stationary/ memory (storage medium) in respect of each code and/or code segment. This dataset or these data can also be supplemented with each further supplemented code segment/ i.e. further data are stored in the memory.

It is however also conceivable for a stored dataset corresponding to a printed optical code or code segment also to be extended at time intervals without supplementing (printing) a further coda segment,; thus, for example/ after a processing step of the 110000011111000--0000010100 sheet;···type material that has taken place/ it is possible/ instead of applying a further code segment, simply to extend the dataset in the memory/ for example by data relating to or identifying the processing stop of the i i gnoce11u i c se ~conta1ning s.h@et~typé material that has just taken place or a subsequent processing step.

It should again be pointed out that data cor responding to the code docs not necessarily have to foe provided in a memory. Depending on the embodiment of the code or the cede segment on the sheet edge, the data can also to foe contained, at least partially directs.y in the code, which enaDJ.es an automatic na car:,a.·, identic ication cor tee subaequent processor, It is also conceivable for a customer-specific code to be provided on the sheet edge, said code providing the customer with his necessary information in encoded terra, That is to say that standardised data such as product data are provided in a code on a (stationary} storage medium, Customer-specific data (such as for example material number, of the customer) for automatic identi. flection before the further processing process can, if the customer sc wishes, be made available in a further code.

According to another embodiment of the method according to the invention, the optical code is applied on the edge strip by means of a contactless printing process, in particular by means of an inkjet or laser printing process. In the case of a laser printing process, the material or a component of the material of the edge strip, in particular the particles of a laser-selective additive, is coloured by contact with the laser light or laser beam. For the laser printing process, use is made in particular of a Cl> laser and for the inkjet printing process use is made in particular of an inkier printer. Purine a printing process, in particular an inkjet printing process, or thereafter, provision can also he made to dry the region of the edge strip that has just been printed, in order to prevent smearing of the optical code or the tatter being made unidentifiable. This can be carried cut by a suitable drying device. In principle, it is also conceivable to apply the optical code by means of a printing element making contact with the edge strip, in particular by means of a stamp, for example a roll, stamp.

According tc another embed1menu of the rot hod according to the iio&amp;slor,, a code containing at Lease one two -dimensicnai (2D) and/or three- d 1 ne π s i ona 1 {3D) coon, in particular at least one Mattit code, preferably a data matrix code, is printed as the optical code < Inti vidrai code segments of the whole optical code can also form different types of code (ID., 2It 30} ; one code segment is for example a two-dimensional code and another code segment for example a three-dimensional code. A 2D code can be a stapted barcode (an individual barcode would be a ID code), 1.e. linking of individual barcodes which are arranged vertically one below the other. A check digit for the whole code arrangement guarantees the data security' of the 2D node < The term 2D code can be derived from the two-dimensiona] representation of information, This /ueans that the standard barcode would bo a ID barcode, since the code information is represented only in the X axis. In the case of the slacked codes, a second information level is added in the form of the Y axis. By means of this kind of compression, i,e< stacking, the area for a 2D code: can be kept relatively small, The use of the reading technique is associated, in comparison with standard barcodes, with only a small additional cost, which proves beneficial in practice, inasmuch as the code structures of standard barcodes are retained. In parallel with this, a series of codes has been developed which can no longer be referred to as barcodes,, but so-called matrix codes. The maxi code was originally developed especially for the tasks of omnidirectional parcel sorting, in order to be able to sort quickly and reliably ( "omnidirectional cods'*; code detectable from ail directions.} . A self-0001:001100 error correction algorithm guarantees toe data security, Rapid: image process log systems in the torra of line-scan cameras or matrix cameras are however required as a basis for the reading side, Another route is taken with the data matrix code which is preferred in the present 1nyertion. This code is useful chiefly in the area of a small space requXrernerr, the code permits the omnidirectional readability by analogy with the maxi code. The data matrix code is very compact, secure and permits a large number of different symbol s and text some in the encoding, A further two-dimensional code is the sc-called QR code. A 3D code is finally a code whicn contains for example different colours as an additional information letel; for example, a 3D matrix code with different colours is a 3D code. The more 1 eve.'· s (dimensions) the code has, the more data can be linked to the latter and the smaller the code Can be with the same information content.

The preciously described codes can be read in a straightforward manner in the production process with cameras and reading devices suitable for industry, which also gives the further processor of the produced lighcceiluXose-contalning sheet-type mmiterial the possibility of ident ifying a aromatically, at the start of the production process of the further processor, the raw material used, 1,e, the iignoceilulose-ccntaining sheet-type material produced by the method according to the invention or the underlying pressed tody.

According to a further embodiment of the method according to the invention, the optical code, i.e, also the given code segment in the case where a plurality of code segments are provided, is read by a reading device, for example is aeieceea oy a reaaing device Integra tec mco a seertpnone or other Internet-enabled device, and transmitted to the data processing system. It is conceivable, after and/or before each processing step of the iignore!!close-containing sheet-type material; for a reading demise to be installed which detects the previously printed code and transmits it to the data processing system, which then in turn parries out in particular a control of the device or the processing stations of the device on the basis of the data corresponding to the code saved (i.e, stored) in the memory; in order to perform the given further processing step. The reading device can transmit the dataset corresponding to the optical code or the corresponding stored data to a display device, which can also be integrated in to a smartphone or other Iiiternet-sn&amp;bled device, which in turn displays or reproduces the received data, for example as plain text, graphics (image) or video. The reading device or another reading device that detects the optical code can also transmit the detected data to a device for checking the print quality, which can Pe part of the data processing system, wherein the device is configured in such a way that it compares the data received from the reading device concerning the print quality with stored setpoint values for the print quality and/or with a stored dataset for an optical code and, in the case of a deviation from the setpoint values for the print quality or the ascertainment of non-compliance (deviation} with the stored dataset for the optical code, causae a display device, in particular the previously defined display device, to display reformation concerning an inadequate print quality. In other words, a reading device can be vsad to infore the opera live about deviation® from an optimum print quality.

According to a not nor embodiment of the method according to the invent ion í a sheet-v. ype body with a thickness (distance between top and bottom orincipai our face; of at least 5 bon preferably at least 8 mm, part lobiarly preferably at least la map is produced as a pressed body by pressing. It has been shown that a pressed sheet with such a thickness on the one hand can toe printed particularly well at the side/ since the narrow surface and therefore the subsequent printing surface formed by the edge atrip is particularly flat. On the: other hand.,, a pressed sheet having such a thickness can be provided with an optical code with relatively large dimensions and a correspondingly large amount of data. Finally, a pressed sheet with such a thickness· can also be provided with the mentioned edge strip in a particularly favourable and durable manner♦

According to yet another embodiment of the method according to the invention, wood chips, wood strands and/or mood fibres, which are provided with a binder, are predominantly or exclusively used as :U.gnoeellulose-containing material during the pressing. In. particular, the step of pressing or producing the pressed body is thus carried out in such a way that the proportion of the iiqnoceiiuiose-coniainine material has the previously defined values, The proportion of the lignore 1 inlose-containing material in the pressed body amounts in particular tarn at least 50 vol, %, preferably at least 7 5 vo.I . %, particularly preferably at least s8: vol, %,

According to another embodiment of the method according ho the Invention, provision is made such that the application of the edge strip on the pressed body tares place footore or after a coa ting of at least one of the principal surfaces of the pressed body, In other words, the pressed body can also be or become provided with a costing, which however does not have any influence on the application of an edge strip for receiving an optical code. finally,: according to yet another embodiment of the method according to the inner,non, prcvisi on is made such that, after the application of the edge strip on the pressed body, a part of the pressed body provided with the edge strip is severed at a severing location, as a result of which tho pressed body acquires a now narrow Surface at the severing location, wherein the now narrow surface of the pressed body is in particular coated. In other words, the edge strip is removed at least partially, preferably completely, by the severing process and the narrow surface (cut surface} newly arising on the sheer "type pressed body is then provided with a, coating, for examp 1 e worth a iacqoer or a plastic such as ABS, PP, PVC or melamine> Thus, it is in particular conceivable for the edge strip or the printed optical code to he used for a sheet"type pressed body with a "ray, format”, id, for the sheet before it is severed for example into individual furniture parts, panels or generally individual workpieces (which then form the given lignoceliul ones "Containing sheet--rype material) ,

Provision can be made such that the edge strip or the print fails sway as an of fent after tire splitiing^up of the sheet-type pressed body with a raw format.

Raw format is understood to mean the pressed sheet as it cosies out of the pressing device, possibly after tbs edge working or sawing (which however does not significantly change the format; or after a severing cut, in order to create an easily manageable raw format (also referrad to as a fihalf---3100 format") , Pressed sheets after the cdatirig are usuali y brought into such a special raw format, 1 -e. said half-sloe format. In the following, a format example: sheet after extraction from, the pressing device S,60 x 2,07 m -> coating -> severing cut: -> 2,80 n 2,07 m (coated half-sire format;.

Each pressed sheet is preferably provided with two of the described optical codes after the pressing device, wherein each part has a code after the spiitting---up into the half-sue formats. alternatively, it is possible for each half-site format to be provided separately with an edge strip and an optical, code only after the coating end splitting-up, Or an edge strip is applied in the middle, provided twice with an opt leal, code and then severed in the region of the edge strip between the two printed codes -

According to a second teaching of the present invention, the problem, is also solved by a device according to claim 13.

As a pressing device, use can be made for example of a press operating confinuously or in cycles, info Which cue or more loose hi. a. not yet compressed) layers of 1 ignoceiiu; use materia)., in particular wood-based material, are introduced, wherein the 1.1 geo cel Xylose material is provided with a binder. The already described sheet-type pressed body thus arises as a result of pressing at raised temperature and under raised pressure.

The edging device can be provided with a supply of materi a... in roll form (as mentioned, the edge strip can fcje made available as a material in roll form) and/or with one or more pressure rollers for pressing the edge strip against the narrow side surface of the pressed body-, It heating device can also be or ovi dec, 'which beat a the edge strip and/or activates or liquefies an adhesive applied thereon,

The printing device is in particular connected to the already mentioned or a separate data processing ayeterm which transmits the optical code to be printed to the printing device. The printing device can comprise a plurality of printing heads,· which can be arranged at different points of the device for producing the iignoeelluiose-containing sheet "-type material, A corresponding optical code or code segment can thus be printed op the edge atrip after or before specific processing steps. In particularf the printing device is disposed downstream of the edging device.

In addition., the device according to the invention can comp rise a reading device which is configured for detecting the optical coda and transmitting the optical code to the data processing system, and/or a display device which is configured for displaying received data relating to or identifying the lignocsilalose-containing sheet-type material, Ás mentioned, the device can also comprise a drying device. which is oonfigored in such a way that ink or dye previously printed on the edge strip is dried,

Finaliy, according to a third teaching of the present invention, the proplem is solved by the use of a 1 i gn c c e 11 u i o s e ··· ο o rh: n 1 n i n g sheet-type material according to claim 15*

Data relacing to the sheet·'·type material and in particular identifying the latter are understood to mean, amongst ether things, individual data or a plurality of data which are: selected from the group comprising data concerning the properties of the sheet···type pressed body and/or matériái, data concerning the quality or the Sheet-hype pressed body and/or material, data concerning the processing steps of the sheet-type pressed body and/or material that have been carried out or are due to be carried cut, data concerning the processlug ideation of the sheet-type pressed body and/or material, data concerning the processing time (date and/or time and/or duration} of the sheet-type pressed body and/or material, data roneerning the processor of the sheet-type pressed body and/or material, data concerning the intended use of the sheet-type pressed body and/or material, data concerning legally re gulfed markings of the: sheet-type pressed body and/or material, for example the CE mark or timber certification or timber origin marks (PEFC, FSC}, the method according to the invention, the device according to the invention and the use according to the invention of a iignocellulose-ccnfaiming sheet-type mater 1 a 1 ara character ised, amongst other things, as follows. 1. Traceability

Once a creased street has left the press, it is no 1 anger reaaily peasable to trace the product ion parameters that were present with the pressed plate. This also applies to processing steps do mast restit of the pressing, such as profiling·,· grinding and coating, In the prior art, data which describe the production parameters and the mentioned processing steps are passed on with the aid of so-called packing slips. If newever a sheet pack (a stack of at plurality of the individual sheets arranged open one another in two-dimensional contact) is further processed, for example by coating of the individual sheets, this pack then first haa to he split up or isolated into single units and the data relating to this pack are lost, especially when the processed pressed sheets are then allocated to different orders and stored individually. By means of the Optically detectable code provided on each iignocellulose-confcaining sheet-sype material, the invention permits the corresponding data tc he read out at any time on the respective sheet via the data processing system or to he read off directly from the edge strip, so that It is at ail times possible to identify the production parameters and processing stops that were previously present or were previously carried out - 2, Control of the logistics chain

The optical code applied to the edge strip can also correspond to stored dateddatasets, which can be used to control the internal logistics chain of individual snoot corurd ssioning, product von feedback, conscript i on posting, packing, up to the loading of the end product, 1. The information for the processor

Sheet “type materials are nsed for a large rumlié r of very diverse: applications and Post therefore reel: a large number of very diverse requirements, With regard to many properties, the manufacturer is also ohIIgeo to provide corresponding veri float ions , These data, i.. e , sheet properties, processing instructions or test certificates, etc,, can also be stored and can be retrieved by the processor at any time via. the optical code, «1 Quality control

Moreover, the applied optical code provides the possibility of a straight forward qual ity control in the event of complaints, in particular through a particularly rapid assessment, of the process data from the coating process including the secondary processes, 5, ndvertising space

On account of the lack of px intab ill tv that has chisted hitherto, the narrow surfaces of sheet""type pressed bodies according to the prior art cannot be used for effective advertising prints. The edge strip provided according to the invention is at the same time created in such a way that not only conventional characters, but also logos and other advertising messages can be printed. By means of the optical cod®,· the targeted consumers can be informed mooli more efficiently about the advantages of the present product, i.e, the fignocelliAoee-eoniaining sheet-type material, for etample also by retrievable promotional videos, Internet pages, images etc, stored in the memory, A large number of possibilities exist for constituting and further dove!opine the method according to the invention, the device according to the invention, the rignoceiJAilose—containing sheet-type material according to the invention and the use of a 1 ignoceiiulone··· containing, sheer-type material according to the invention. In this regard, reference is made on the one band1 to the claims subordinated to claim 1, and on the other hand to the description of examples of embodiment in connection with the drawing. In the drawing:

Fig, la) and b> show a diagrammatlc representation of a method according to the invention, rig, 2 shows a plan view of an edge strip printed with an optical code and

Fig, 3 shows a device for performing the method according to the invention, fig, la) represents how, in a method for producing a 11 gn o oe i 1 u 1 o se - con fairing so act: -type material 1, this being a wood-based sheet 1 here, a sheet~fypc presesd body 2 is first produced, which comprises a top principal surface 2,1, a bottom principal surface 2,2 and at least one narrow side surface 2,3, which connects the principal surfaces together. Pressed cociy 2 is produced by pressing 1 ignore ! luiose-coniaining material 3 provided with binder, for example coon chips, wood strands and/or wood fibres, under raised pressure and at raised temperature, the production method is explained in greater detail below with the aid cl; fig, 3,

Fig, la ? further represents how an edge strip 1, which here comprises by way of example two layers 4*1 of kra.fi. paper, is applied on at least one narrow surface 2,3 or sheet·"type pressed body 2, Edge atrip 1 has, as can clearly be seen in fig, la), a roughness which is less than that of narrow surface 2.3 onto which edge strip 4 is applied.

Fig. 2a] also shows that pressed body 2 has already been presided with &amp; coating 2.4, for example a lacquer or a film, before the application of edge strip 4,

Fig. lb] shows i ignore iluiose-contein ing sheet-type material 1 after the application of edge strip 4 on narrow surface 2,3, wherein edge strip 4 in the representation has already been printed with an optical code 5. Code 5 has been printed on narrow surface 2.3 either before or after the application of edge strip 4, for example: by means of an inkjet printer or laser printer (net represented], Optical code 5 is described in greater detail bolew.

Edge strip 4 has a thickness d of less than 1 mm, here for example of less than 0.3 ran. Within the moaning of the invention, therefore, thickness 1. means the thickness ousr síüuö .-. .. p « ii&amp;í oerőre r·..a M>p.u.c:a sión oíu.o flaiíuw surface 2.3. TMs rálátively small thickness á is nowever sex ti elect to fill and thus level out the pores and unevennesses of narrow side surface 2.3. he fig. led shows, edge strip 4 is applied over the entire narrow side surface 2.3, although it is in principle also possible to apply edge strip 4 only on a part of narrow surface 2.3, .As mentioned, edge strip 4 is provided with an optical code 3. In the exempts represented in fig. lb), optical code 5 is an essentially square tar»"-címen siónál, cede, here a data matrix code. Fig, 2 shows an edge strip 4; which has been printed with a plurality of essentially square: code segments 5. i, 5,2 und 5,3, wherein each code segment also forms alone (by itself) a comp!etc optical code 5 within the meaning of the present invention. Each code segment 5.1., 5.2 and 5,3 is, here too, a data matrix code. Each of these codes 5 or code segments 5.1, 5,2 end 5.3 contains in encoded form data relating to the lignoceiluiose-containing sheet-type material and/or Identifying the latter, for example data concerning processing steps that have taken place and/or are due to take place, intended uses etc, he fig, 2: shows, edge strip 4 has a length X which is selected such that it corresponds at most to 150 % of the length of optical code 5, which here comprises a plurality of code segments 5.1, 5,2 and 5,3, its fig. 2 also shows, edge strip 4 also has a width b which is selected1 such that it corresponds at most to 150 I of the width of optical code 5,

Indiv i dual code segments 5*1, 5.2 and 5,3 represented in fig, 2 each contained, in encoded form data: concerning a particular processing step; 1,e. code segments 5,1, 5.2 and 5,3 are constituted (corned; differently from one another. Individual code segments 5,:, 5,2 and 5,3 cere applied at time .intervals one after the other on edg®: strip 4, a leave after a specific processing step in the processing of 1 i.ynooe 11.a lose ·· con ta 1 ni ng sheet-like material 1 had been completed.

Fig, 3 shows, with the aid of a device 3, a method for producing a 1:1 gnocel Itloae-coodainj rig sheet-type material I, such as has been previously described. 1:ignore 11 uiose···cort:a 1 to.nq material 3, here for example wood chips, wood strands and/or wood fibres provided whin hinder, is first strewn onto conveyor belt 15 in one or mere layers. Strewn material 3 is then fad to a centinucus pressing· device 10, which is conf igured in such a way that it compresses smaiI-si ted material 3> here wood chips, wood strands and/or wood fibres 3 glued with a binder, under raised pressure and at raised temper atime to form a sheet-type pressed body 2 with a top principal, surface 2.1, a bottom principal surface 2.2 and at .least one narrow side surface 2.3,

Pressed sheet 2 thus arising is then fed to an edging device 11, which is configured in such a way that an edge strip 4/ which here is made available as a. material in roil form 5, is applied on the at least one harrow surface 2,3, Edge strip 4 is an edge strip with a roughness wmco is less than mat or narrow surxace ο,ο of sheet-type pressed body 2,

Cellulose-containing sheet-type material 1 thus edged is thorn fed to a printing dooi.ee 12,. which it configured in such a way that it can print edge strip 4 with an optical code i as described above. In principle, it Is also conceivable for printing device 12 to comprise a plurality of printing heads spaced apart at a distance from one another, which print edge strip 4 at time intervals at different· locations vb.ch, in each case, an optical code S or code segment 2,1, 5,2 or 2,3.,

Device 9 also comprises a data processing system 7, which contains a. memory ta storage medium) 13 which is configured in such a way that it can store data relating to lignocellalose-'confaiming sheet-type matériái 1< tom the-more, device 9 comprises a reading device 3, which is configured in such a way that it can detect optical Code 5 and transmit it to data processing system. 7, in data processing system 7, the optical code or the signals transmitted by reading device 8 is/are assigned to a dataset stored in memory 13, wherein the data of the dataset can then be transmitted to further orecessroc stations (not represented;: of device 9, in order to carry out corresponding: processing steps at these points.

The data can aiso be transmitted to a display device 19, which is configured in such a way that it can display the received data relating to Xignocelluloee-containing sheet-type material h The display device can also he a smartphone or other Internet-enabled device.

Claims (9)

UBME2 AUtm WALKMULL WITH UGMELLULOSE WImMi Era 3ARAS AND INSTRUMENT LEAVE LEARNING POINTS L? for the manufacture of a shaped material (1), the method comprising the steps of: - producing a plate-shaped, pressed body (2) with a pulverized surface (2.1), with a lower surface surface (2.2) and at least four lateral filaments (2.3). ) by compressing a material (3) containing an iignococcus with a binder (3) at high pressure and high temperature. améiy one or more resin-impregnated: pp! rbib: AÍÉ * Mlf PP "bis, PVO and / or mimetic layer (4.1) roughness # (4) is at least on one side smaller than that of the narrow surface (2.3) to which the shutter (4) is attached, we apply the edge closure (4) - which can be printed with at least Ü dpi resolution - at least one for at least one bulb (2,3 :): and we print an optical code (5) after applying the edge stopper (4) to the at least one zipper area (2.3), which code (5) is printed at least 60dpi on the blade (4), and which mist is stored in a data-processing apparatus (?) containing the lignocylulosic sheet-shaped material. (1) is still responsible for data relating to The method according to claim 1, wherein the edge closure (4) is made of a thickness (d) of up to 2 mm, preferably not more than 1 mm, 3. A serine reflex of claim 1 or claim 2, characterized in that a strip of material comprising a laser bulking additive, in particular anthrax-active dyes, is produced as an edge blade (4). 4. The; The method according to any one of the preceding claims, characterized in that the ég gene density jebb is not more than 4 SÖ n / pre, preferably or G G! / G különösen különösen különösen különösen ey ey ey ey ey ey különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen különösen módon módon módon módon módon módon módon módon módon módon módon módon módon n up to: yOu pbA liveS: up to S yog in a particularly advantageous way up to 2 fm, and well on #kc ”Smoothness at least 10% preferentially at least Salt, especially at least 100 s, Method according to one of the preceding claims, characterized in that the optical code (Bow once or several times after each time interval, in particular one of the machining steps of the press body (2)) is supplemented by a hub (S, 2j (5.3) i, The preceding claims, characterized by the fact that a code (5) is transmitted by means of a non-contact printing aid, in particular an ink jet or a flare, by means of a non-contact printing aid (8). The method according to one of the preceding claims, characterized in that, as an optical code, a code is printed which has at least one dimensional and / or three-dimensional code, preferably at least one matrix code, preferably in the form of a code. contains data trace code. Method according to one of the preceding claims, characterized in that a pressed body (2) is produced by pressing into a flake-like body (2) having a thickness (D) of at least 5 µm, preferably at least 8 mm, particularly preferably at least 10 µm. mm. Method according to one of the preceding claims, characterized in that, when compression is used, the material comprising: iignocellglucose: (3 $ taffeta, peeling chips and / or wood fiber is used. Method according to one of the preceding claims, characterized in that the fraction (3) of the material comprising the iignoilite in the pressed body (2) is at least SOH, preferably at least 7 °; particularly preferably at least 90 terteps 11, a strawberry according to one of the preceding claims, characterized by:; that the shutter fi) is at least one of the main faces of the pressed body (2) # .i * (before or after the 2¾i &amp; iltegéza We are half-pressed to the body (I). • II *. that, after applying the sealer (4) to the pressed body (2), a part of the pressed body (2) supplying the shutter (4) is removed at a separating location, thereby causing the press body (2) to have a new narrow surface at the separation site. and the press body (2) is layered with this new knife, in particular. A device (9) for the production of a disc-shaped material Cl) containing an iignocoilose, in particular a method according to any one of the preceding claims, - a pressing device (10) configured to consist of small pieces of material at high pressure and high temperature presses, and supernatural: a supercharger (2,1), lowerbound fdfelOiette! (pj) and at least one pressed plate (2) having a dairy edges @ f (2,3), - a manufacturing device (11) configured to have edge edges (d) up to 3 mm thick (4) ) onto the at least one narrow surface (2.3), which has a shutter speed of at least 60 dpi! can be printed * and which edge seal is formed by a nut, one or major resin-impregnated paper, ABS, PP, PVC, and / or Meiarnin! and the roughness of the edge seal (4) is at least one side smaller than that of the narrow surface (2.3) on which the? shutter (4) is applied, - with a printing device (12) at a price, f * pgy: print an optical code (5) at the IÖ dpi resolution (4¾ ed - with a data processing device (7), which ven a memory (13) which includes: mn ft &amp; W Mdaf: é · ί ί ί amp Μ Μ φ Μ &amp; Μ% aj aj aj ez z z z z ez ez ez ez ez ez ez ez ez Z Z Z Z Z Z Z Z Z Z Z ezve ezve ezve that the device (9) has a laser device (8) which is configured to detect the optical code (5) and the optical code | S | is the signal processor (7) and / or a display device (14), which is for displaying the data obtained on a sheet-like material (!) Containing the proconoceliosis, i.e. the use of a plate-shaped material (1) comprising a dried iignoylite according to one of claims 1 to 12, the material has a plate-shaped press lt tore (2) the frieze-side wooden surface (2,1), the lower surface of the main surface (2,2) and at least one lateral edge (2.3), and one of the edges (# 2b) of the mile:: (2,1) 4) on which an oncical code (S) printed on at least 60 dpi has been printed on the plate-like material containing the lcnocellulose: (1); for processing of data relating to