EP1381518B1 - Support pour l'impression decorative de surfaces, en particulier de materiaux ceramiques et similaires - Google Patents

Support pour l'impression decorative de surfaces, en particulier de materiaux ceramiques et similaires Download PDF

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Publication number
EP1381518B1
EP1381518B1 EP02722678A EP02722678A EP1381518B1 EP 1381518 B1 EP1381518 B1 EP 1381518B1 EP 02722678 A EP02722678 A EP 02722678A EP 02722678 A EP02722678 A EP 02722678A EP 1381518 B1 EP1381518 B1 EP 1381518B1
Authority
EP
European Patent Office
Prior art keywords
support
printing
support according
face
silicone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02722678A
Other languages
German (de)
English (en)
Other versions
EP1381518A1 (fr
Inventor
Mauro Cestari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sacmi Imola SC
Original Assignee
Sacmi Imola SC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/EP2001/009895 external-priority patent/WO2002087893A1/fr
Application filed by Sacmi Imola SC filed Critical Sacmi Imola SC
Priority to EP02722678A priority Critical patent/EP1381518B1/fr
Publication of EP1381518A1 publication Critical patent/EP1381518A1/fr
Application granted granted Critical
Publication of EP1381518B1 publication Critical patent/EP1381518B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/12—Printing plates or foils; Materials therefor non-metallic other than stone, e.g. printing plates or foils comprising inorganic materials in an organic matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/10—Intaglio printing ; Gravure printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/34—Printing on other surfaces than ordinary paper on glass or ceramic surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/40—Printing on bodies of particular shapes, e.g. golf balls, candles, wine corks

Definitions

  • the present invention relates to a support for the decorative printing of surfaces, particularly of ceramic materials and the like.
  • the invention is particularly, although not exclusively, designed for the decorative printing of surfaces of ceramic materials and the like, but equally advantageously it lends itself to being applied in all those fields in which it is necessary to print characters or decorative figures on surfaces for example of products or in the field of advertising posters.
  • a first known printing methodology provides for the use of printing rollers on the outer surface of which is wound a silicone tape.
  • the colouring substance for example an ink or similar pigment, which is transferred onto the surface to be decorated by contact of the silicone tape on the surface itself.
  • the advantage of selecting a silicone-based printing support in tape form lies on the one hand in the distinct water-repellent characteristics of the silicone which facilitate the distribution and the transfer of the typically water-based inks onto the surfaces to be decorated, and on the other hand in its relative elasticity, which avoids the occurrence of localised overloads on the surface to be decorated as a consequence of the contact of the printing roller.
  • This methodology allows the printing and decorating of surfaces of limited dimensions, dictated principally by the extent and overall dimensions of the printing rollers, which have objective structural limits of construction.
  • a second methodology provides for the use, as an alternative to printing rollers, of silicone supports in plate form, substantially flat and mounted on respective frames. These make it possible to print and decorate surfaces which are also larger than those obtainable with conventional roller printing. Such supports, however, have the drawback of excessive elasticity in directions substantially parallel to the printing plane, which involves undesirable elongation of the support, with the result that smudging of the distributed colours is caused, which compromises their final quality. This has proved even more obvious in so-called multi-channel printing, in which several colours are superimposed on the printing surface.
  • the problem underlying the present invention is that of providing a support for the decorative printing of surfaces, structurally and functionally designed to remedy the drawbacks mentioned with reference to the prior art cited.
  • 1 indicates as a whole a support for the decorative printing of a surface 2 according to the present invention.
  • the support 1 has a plate-like structure having a thickness indicated by S comprised between opposed faces 3 and 4 and is produced with a silicone matrix.
  • a thickness indicated by S comprised between opposed faces 3 and 4 and is produced with a silicone matrix.
  • On the surface of the face 3 are provided, for example by means of laser technology, a plurality of impressions, all indicated by 5, constituting seats for receiving one or more colouring substances with which the surface 2 is decorated. For this reason the face 3 will also be indicated in the following description as the printing face.
  • the colouring substance typically a water-based ink or similar pigment, is easily transferred onto the surface 2 by flowing from the impressions 5, without any problem of formation of deposits or layers of colorant within the impressions.
  • the support 1 comprises a reinforcing armature 6 embedded within the thickness S in the plate-like silicone structure.
  • the armature 6 is formed by a network of glass fibres 7 distributed in a random so-called "MAT" configuration, or without any preferential orientation in predetermined directions, as illustrated in Figure 2.
  • the armature 6 is disposed within the thickness S of the plate-like support on the opposite side from the printing face 3.
  • the glass-fibre reinforcement 6 is such as to impart to the plate-like support, characteristics of distinct rigidity (and consequently limited elasticity) in directions parallel to the plane of the plate-like support.
  • the armature 6 does not confer rigidity in a direction perpendicular to the plane of the support, indicated by.the axis X in Figure 1, along which adequate elasticity is ensured owing to the silicone matrix (or even silicone foam matrix) having the thickness S.
  • the plate-like support 1 may be fixed at the perimeter on a frame 8, only partially illustrated in Figure 2, through which it is handled during the operations of printing the surface 2.
  • the colouring substance is distributed in the impressions 5 according to a preselected configuration correlated to the decorative figure to be obtained on the surface 2.
  • the printing face is then brought into contact with the surface 2 with consequent distribution of the colorant.
  • any breakage of one or more fibres due for example to the formation of the holes or the impressions for distribution of the colour, is not such as to compromise the stability and overall rigidity of the plate-like structure of the support.
  • the armature embedded in the plate-like support may be produced with reinforcing fibres of a different chemical nature, although the choice of glass fibres represents a preferred choice, owing to the compatibility between the silicone matrix, with which the printing support 1 is produced, and silica, the basic component of the glass fibres. It should be noted that the armature may also be produced with fibres disposed substantially regularly, as long as they ensure dimensional stability.
  • the support 1 in an alternative embodiment of the invention, shown diagrammatically in Figure 3, provision is made for the support 1 to be formed from an open porosity silicone foam having characteristics of permeability and porosity to air and vapour but not directly to water.
  • Such a structure makes it possible to subject the plate-like support to one or more jets of compressed air directed onto the face 4 opposed to the printing face, with consequent squeezing of the impressions 5 to obtain the outflow of the colouring substance and also its transfer onto the surface to be decorated.
  • Such printing methodology is usable precisely owing to the porosity of the silicone material which facilitates the pressure action of the compressed air through the thickness S to obtain the discharge of the impressions and pits filled with colorant.
  • a second alternative embodiment of the invention differs from the example in Figure 3 in that it further comprises a non-porous silicone layer 9 at the face 3, which layer is perforated to form the impressions 5 constituting seats for the printing ink.
  • Said alternative form allows the compressed air which passes through the porous layer to emerge only through the impressions (5), expelling the ink deposited therein.
  • the porosity in the porous silicone layer is obtained by processing the latter with formation of a plurality of blind holes 50 which involve said layer, and are preferably obtained by laser perforation.
  • a suitably calibrated laser beam is guided substantially perpendicularly to the surface of the face 4 (opposed to the printing surface) such as to provide a dense network of parallel and non-intersecting holes, having a mean diameter of 0.2 - 2 mm and with a mean distance between centres of 0.4 - 2.5 mm.
  • the aforesaid holes are interrupted at a distance from the cavities of the impressions 5, rendering the support suitable for contact printing, as already indicated previously.
  • the holes communicate with the printing surface through one or more capillary holes 51 which start from the bottom of the blind holes 50.
  • the capillary holes 51 are also preferably produced by laser perforation, in a manner analogous to that of the execution of the holes 50.
  • the silicone-based elastomer with which the support 1 is produced (case of single-layer support) or at least one of the layers thereof (case of multi-layer support) is modified by the addition of reactive and/or interpolant groups and/or of fillers having a chemical base of SiO 2 - SiCH 3 - SiOH.
  • each foot appendage 60 is developed from a base surface 61 and tapers in the direction of a corresponding free end 62.
  • the foot appendages 60 are disposed, at a pitch P, in rows parallel to one another, in which adjacent rows are offset by half a pitch with a configuration of the staggered type as clearly illustrated in Figure 10. Said appendages 60 are further elongate in the direction of development of each of the rows, which direction is indicated by the axis Y in Figure 10. Preferred dimensions in plan for each appendage are of the order of approximately 2 mm in the direction of the axis Y and of approximately 1 mm in a direction perpendicular to the axis Y. It should further be noted that the direction of development of each row (axis Y) is such as to be perpendicular to the direction of movement of the support in the printing operations relative to the surface to be decorated. Said direction of movement is indicated by the arrow F in Figure 10. In other words, the foot appendages 60 are suitably elongate in a direction transverse to the direction of travel of the support.
  • the rows of feet 60 are aligned in rows transversely to the direction of travel of the support in order to guarantee greater flexibility of the support, in particular when the support is mounted on a printing roller.
  • the offset between adjacent rows of feet likewise allows the presence of void areas in the direction of travel with consequent increased flexibility of the support.
  • the printing support 1 not to be provided with any armature partially embedded on the side opposed to the printing surface.
  • the support is suitably anchored, at the surface 4 (provided with the foot appendages 60), to a load-bearing support structure 65, for example in the shape of a cylindrical jacket (printing roller).
  • a load-bearing support structure 65 for example in the shape of a cylindrical jacket (printing roller).
  • the support 1 is anchored to the cylindrical jacket 65 by being adhesively secured.
  • a method for the manufacture of the support according to the invention provides for the support 1 to be obtained by centrifugal action, as described in present claims.
  • a hollow centrifuge cylinder 70 is provided, preferably metallic, provided with rotational motion about its principal axis.
  • an inner surface 70a on which is fixed a die 71, made of resin, including on the side radially opposed to the surface 70a, a surface 71a having surface reliefs 72 of a shape and arrangement such as to reproduce in negative form the appendages 60 of the support.
  • the method provides for the arrangement of a layer of silicone at the surface 71 a, and a subsequent centrifugal action of the cylinder, by means of which there is obtained a silicone skin 73 of substantially uniform thickness defined between the opposed faces 3 and 4, where the face 4 is provided with the foot appendages 60.
  • the silicone skin 73 is then removed from the die 71 in the form of a particularly flexible cylindrical sheath-like product and is turned inside out so as to have the face 3 as the outer surface of the product and the face 4 as the inner surface.
  • the method further provides for fixing, for example by being adhesively secured, the surface of the face 4 onto a cylindrical support (of the type illustrated in Figure 15).
  • the printing face 3 of the support is obtained substantially devoid of surface defects, owing to the fact that said surface is produced exclusively by centrifugal action without any contact with surfaces of the die. Therefore in the presence of any defects or scoring of the die 71, the surface which can possibly be damaged is the surface 4 bearing the foot appendages 60, without compromising instead the quality of the surface finish of the printing face 3.
  • the invention thus solves the problem posed, by providing numerous advantages with respect to the known solutions.
  • a first advantage lies in the fact that printing supports according to the invention allow the decorative printing of surfaces much larger than those obtainable with conventional printing rollers, guaranteeing, however, dimensional stability within the typically accepted tolerances.
  • a second advantage lies in the fact that the relative rigidity of the support in directions parallel to the plane of the support itself guarantees optimum superimposition of the colours distributed, in particular in multi-channel printing, devoid of smudging even in the case of large dimensions of the surface to be printed.
  • a further advantage is that the high degree of rigidity in the plane of the support does not prejudice the characteristics of elasticity of the support in a direction perpendicular to the plane itself for optimum bearing contact of the support on the surface to be printed.
  • a still further advantage lies in being able to use a porous printing means, which assists the expulsion of the ink through compressed air which filters through the porosity, to the point of no longer making contact between the printing means and the surface to be printed necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Printing Methods (AREA)
  • Laminated Bodies (AREA)
  • Decoration By Transfer Pictures (AREA)

Claims (21)

  1. Support pour l'impression décorative de surfaces (2), ayant une structure siliconée en forme de plaque sur une face (3) de laquelle est distribuée une substance colorante devant être transférée sur ladite surface (2), caractérisé en ce qu'il comprend, sur une surface (4) opposée à la surface d'impression (3), une pluralité d'appendices formant pattes (60) s'étendant dans la même direction et mutuellement espacés les uns des autres.
  2. Support selon la revendication 1, dans lequel lesdits appendices (60) sont disposés avec un pas (P) en rangées parallèles.
  3. Support selon la revendication 2, dans lequel des rangées adjacentes desdits appendices (60) sont décalées d'un demi-pas, selon un agencement globalement en quinconce.
  4. Support selon la revendication 2 ou 3, dans lequel chaque appendice (60) a une configuration en plan allongé dans la direction de développement de la rangée correspondante.
  5. Support selon une ou plusieurs des revendications précédentes, dans lequel lesdits appendices (60) diminuent progressivement depuis une surface de base (61) dans la direction d'une extrémité libre correspondante (62).
  6. Support selon une ou plusieurs des revendications précédentes, dans lequel ladite surface (4) pourvue desdits appendices (60) est capable d'être ancrée à une structure de support portant une charge (65).
  7. Support selon la revendication 6, dans lequel ladite structure de support a la forme d'une chemise cylindrique.
  8. Support selon une ou plusieurs des revendications précédentes, comprenant une structure de renforcement (6) au moins partiellement encastrée dans la structure en forme de plaque dudit support.
  9. Support selon la revendication 8, dans lequel ladite structure de renforcement (6) comprend une pluralité de fibres (7) noyées dans la structure de silicone.
  10. Support selon la revendication 8 ou 9, dans lequel les fibres (7) de ladite structure de renforcement (6) sont des fibres de verre distribuées selon une configuration MAT, sans aucune orientation prévalente dans des directions prédéterminées.
  11. Support selon la revendication 9 ou 10, dans lequel ladite structure de renforcement (6) avec des fibres (7) est disposée à l'intérieur de l'épaisseur (5) de ladite structure en forme de plaque sur le côté opposé à la face d'impression (3).
  12. Support selon la revendication 8, dans lequel la surface de la face d'impression (3) comprend une pluralité d'impressions (5) adaptées pour recevoir la substance colorante distribuée dessus afin de la transférer sur la surface devant être décorée (2).
  13. Support selon la revendication 12, dans lequel la silicone de ladite structure en forme de plaque a des caractéristiques de porosité à l'air telles que l'action d'un jet d'air comprimé dirigé sur la structure en forme de plaque, sur le côté opposé à la face d'impression (3), effectue un écrasement desdites impressions (5) avec vidage de ces dernières et transfert en conséquence de la substance colorante sur la surface devant être décorée (2).
  14. Support selon la revendication 13, comprenant en outre une couche (9) de silicone non poreuse au niveau de la face d'impression (3), lesdites impressions (5) étant formées par perforation de ladite couche (9), de telle sorte que l'air comprimé, une fois qu'il a traversé la couche poreuse, puisse émerger vers l'extérieur exclusivement par l'intermédiaire des impressions (5), en prenant avec lui la substance colorante déposée dedans.
  15. Support selon la revendication 8, comprenant, sur le côté opposé à la surface d'impression (3), une pluralité de trous borgnes (50), interrompus à une distance prédéterminée de ladite surface d'impression.
  16. Support selon la revendication 15, dans lequel lesdits trous (50) s'étendent perpendiculairement à la surface d'impression (3) et sont obtenus par perforation au laser.
  17. Support selon la revendication 15 ou 16, dans lequel chacun desdits trous (50) communique avec la surface d'impression (3) par l'intermédiaire d'un ou plusieurs trous capillaires (51).
  18. Support selon la revendication 17, dans lequel lesdits trous capillaires (51) sont obtenus par perforation au laser.
  19. Support selon la revendication 8, produit à partir d'un élastomère à base de silicone avec l'addition de groupes réactifs et/ou intercalés et/ou de charge ayant une base chimique de SiO2-SiCH3-SiOH.
  20. Procédé pour la fabrication d'un support pour l'impression décorative de surfaces selon une ou plusieurs des revendications 1 à 19, comprenant les étapes consistant à :
    - pré-arranger un cylindre creux de centrifugation (70), pouvant tourner autour de son axe axial de symétrie, à l'intérieur duquel est disposé une couche de matrice de silicone constituant ledit support (1), caractérisé en ce qu'il permet les étapes ultérieures consistant à :
    - pré-arranger une filière (71) avec une chemise cylindrique creuse montée à l'intérieur du cylindre de centrifugation (70), sur la surface intérieure (71a) de laquelle est disposée ladite couche de matrice de silicone, de façon qu'on l'obtienne, par action centrifuge dudit support (1), sous la forme d'un produit cylindrique creux ayant une surface intérieure lisse et une surface extérieure façonnée d'une manière correspondante et opposée à celle de la surface (71a) de la filière, ladite filière (71) étant pourvue de reliefs (72) faisant saillie depuis la surface (71a) de façon qu'on obtienne, dans la face (4) opposée à la face d'impression (3), ladite pluralité d'appendices formant pattes (60).
  21. Procédé selon la revendication 20, dans lequel ledit produit cylindrique creux est ensuite retourné à l'envers, après extraction hors du cylindre de centrifugation (70), de façon à avoir, en tant que surface extérieure, la face lisse (3) destinée au contact d'impression, et, en tant que surface intérieure, la face opposée (4) façonnée par la filière et destinée à la fixation sur un support d'impression.
EP02722678A 2001-04-26 2002-03-25 Support pour l'impression decorative de surfaces, en particulier de materiaux ceramiques et similaires Expired - Lifetime EP1381518B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02722678A EP1381518B1 (fr) 2001-04-26 2002-03-25 Support pour l'impression decorative de surfaces, en particulier de materiaux ceramiques et similaires

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
IT0100204 2001-04-26
WOPCT/IT01/00204 2001-04-26
PCT/EP2001/009895 WO2002087893A1 (fr) 2001-04-26 2001-08-28 Support pour impression decorative de surfaces, en particulier de materiaux ceramiques et similaires
WOPCT/EP01/09895 2001-08-28
EP02722678A EP1381518B1 (fr) 2001-04-26 2002-03-25 Support pour l'impression decorative de surfaces, en particulier de materiaux ceramiques et similaires
PCT/IT2002/000190 WO2002090120A1 (fr) 2001-04-26 2002-03-25 Support pour l'impression decorative de surfaces, en particulier de materiaux ceramiques et similaires

Publications (2)

Publication Number Publication Date
EP1381518A1 EP1381518A1 (fr) 2004-01-21
EP1381518B1 true EP1381518B1 (fr) 2006-04-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02722678A Expired - Lifetime EP1381518B1 (fr) 2001-04-26 2002-03-25 Support pour l'impression decorative de surfaces, en particulier de materiaux ceramiques et similaires

Country Status (5)

Country Link
EP (1) EP1381518B1 (fr)
AT (1) ATE324268T1 (fr)
DE (1) DE60210947D1 (fr)
ES (1) ES2259081T3 (fr)
WO (1) WO2002090120A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5928479B2 (ja) * 1979-12-03 1984-07-13 大日本スクリ−ン製造株式会社 凹版印刷版
JP3203755B2 (ja) * 1992-03-31 2001-08-27 凸版印刷株式会社 弾性体凹版ブランケット、その製造方法、およびそれを用いる印刷方法
JPH0894822A (ja) * 1994-09-26 1996-04-12 Sumitomo Rubber Ind Ltd 液晶カラーフィルターの製造方法とこれに使用する凹版
JPH10226005A (ja) * 1997-02-18 1998-08-25 Toshiba Mach Co Ltd 複合部材の製造方法及び複合部材並びにそれを用いたブランケット、凹版及び平版並びにそれらの製造方法

Also Published As

Publication number Publication date
ES2259081T3 (es) 2006-09-16
EP1381518A1 (fr) 2004-01-21
ATE324268T1 (de) 2006-05-15
DE60210947D1 (de) 2006-06-01
WO2002090120A1 (fr) 2002-11-14

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