EP0816072B1 - A process for realising rotary silk screens - Google Patents

A process for realising rotary silk screens Download PDF

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Publication number
EP0816072B1
EP0816072B1 EP97830130A EP97830130A EP0816072B1 EP 0816072 B1 EP0816072 B1 EP 0816072B1 EP 97830130 A EP97830130 A EP 97830130A EP 97830130 A EP97830130 A EP 97830130A EP 0816072 B1 EP0816072 B1 EP 0816072B1
Authority
EP
European Patent Office
Prior art keywords
rods
screen
silk screen
parallelogram
strips
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
EP97830130A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0816072A1 (en
Inventor
Sergio Tosi
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.)
Serigrafica Tosi Srl
Original Assignee
Serigrafica Tosi Srl
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
Application filed by Serigrafica Tosi Srl filed Critical Serigrafica Tosi Srl
Publication of EP0816072A1 publication Critical patent/EP0816072A1/en
Application granted granted Critical
Publication of EP0816072B1 publication Critical patent/EP0816072B1/en
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
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B41N6/02—Chemical means for fastening printing formes on mounting boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/14—Forme preparation for stencil-printing or silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/38—Screens, Frames; Holders therefor curved

Definitions

  • the invention relates to a process for realising rotary silk-screens. Specifically though not exclusively it is intended for application in the ceramics industry for silk-screening ceramic products such as tiles and the like.
  • Cylindrical rotary silk screens are used for making designs on ceramic tiles.
  • the screen cylindrically-set, is set in rotation about a horizontal axis and caused to roll undraggingly in contact on underlying tiles transiting along a transport line.
  • the screen is constituted by a matrix screen supported by a structure guaranteeing that it maintains a cylindrical shape.
  • This structure usually comprises two flanges, arranged in diametrically opposite positions, on which the screen is stably fixed. In such embodiments the two flanges can be at the same time united and kept apart by fixed or mobile hoops.
  • the realisation of the screens is such that the formation of the printing matrix is performed on the screen when it is already perfectly-fixed and mounted on the structure, that is, when the screen has already acquired a cylindrical shape.
  • a further drawback in the prior art is that using cylindrical silk screens means that the whole screen is considerably voluminous, which renders transport and stocking thereof extremely wasteful of space.
  • a further drawback in prior-art screens is that for each screen a normally metallic structure has to be predisposed.
  • An aim of the present invention is to obviate the drawbacks and lacks in the prior art by providing a process for making rotary silk screens in which the making of the design can be done with the screen flat, fashioning the screen into a cylindrical shape only after the matrix-designing process.
  • An advantage of the present invention is constituted by the considerable simplification, with respect to the prior art, of the whole process concerning the making of the design on the screen.
  • a further advantage of the present invention is constituted by the fact that the screens can be stacked and transported in a very contained space, much smaller than the space occupied by screens made according to prior-art methods.
  • 1 denotes a rectangular parallelogram having predetermined dimensions.
  • the screen tissue of which it is composed has a certain elastic deformability.
  • the preparation of the matrix that is, the operation normally known as the design-making, is carried out with the screen flat.
  • the parallelogram of silk material is stretched out and fixed on a flat frame 3.
  • the design-making operation comprises, apart from the realisation of the matrix destined for the silk-screen printing operation, the making of two straight and parallel strips 20 which are located at the sides of the material parallelogram 1, at a predetermined reciprocal distance.
  • the rods 2 are made of a non-extensible material.
  • the flat frame 3 is detached, and at least the redundant material external of the rods is cut away.
  • the screen achieves its definitive shape, denoted by 5 in the figures.
  • the screen 5 is now ready for application on a special metal structure which will give it a cylindrical shape.
  • the screen 5 Before it is applied on the structure, the screen 5 can easily be stacked and transported as it occupies little space.
  • the final cylindrically-shaped rotary silk screen can be made very simply by applying a silk screen 5 on two circular flanges 4 and causing the rods 2 to wrap contactingly about the cylindrical surfaces 40 of the flanges 4.
  • Two fasteners 6 are provided at the ends of the rods 2, by means of which the rods 2 can be precisely tightened on the cylindrical surfaces 40.
  • the two flanges 4 can then be mounted, with or without the help of movable hoops located inside the screen, on the drive heads of a silk screen machine predisposed to operate in a ceramic tile line.
  • the two circular flanges 4 can be reciprocally united and distanced at a predetermined distance by fixed internal hoops.
  • the material of the screen 5 can be provided with an overlap 10 which can be used to close the screen in the cylindrical configuration.
  • the overlap 10 is glued when the screen 5 is mounted on the circular flanges 4.
  • the invention enables the screen matrix to be prepared with the screen flat, while the cylindrical rotary silk screen is formed only at the moment of use. This means that the screens, already prepared, can be stacked and stored in the smallest possible space, and additionally means that each cylindrical screen does not have to be provided with a dedicated structure.
  • Preparing the matrix with the screen flat and only thereafter mounting the screen on a structure to create the cylindrical screen is made possible essentially by the presence of the rods 2 fitted to the material of the screen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Paper (AREA)
EP97830130A 1996-06-28 1997-03-21 A process for realising rotary silk screens Expired - Lifetime EP0816072B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96MO000086A IT1287451B1 (it) 1996-06-28 1996-06-28 Procedimento per la realizzazione di retini serigrafici rotanti
ITMO960086 1996-06-28

Publications (2)

Publication Number Publication Date
EP0816072A1 EP0816072A1 (en) 1998-01-07
EP0816072B1 true EP0816072B1 (en) 1999-10-27

Family

ID=11386115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830130A Expired - Lifetime EP0816072B1 (en) 1996-06-28 1997-03-21 A process for realising rotary silk screens

Country Status (6)

Country Link
EP (1) EP0816072B1 (it)
CN (1) CN1122600C (it)
DE (1) DE69700683T2 (it)
ES (1) ES2140199T3 (it)
IT (1) IT1287451B1 (it)
PT (1) PT816072E (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT945265E (pt) * 1998-03-26 2001-11-30 Estudio Ceramico S L Processo para o procesamento a humido com moldes de seda de pecas de ceramica de superficie curva e de seccao transversal constante
EP1208953A3 (en) * 2000-08-02 2003-07-23 Tecno - Europa S.R.L. Decorating means
DE102008034906A1 (de) * 2008-07-26 2010-02-11 Kocher + Beck Gmbh + Co. Rotationsstanztechnik Kg Siebdruckform für grafische Anwendungen und Verfahren zur Herstellung einer Siebdruckform
JP7170310B2 (ja) 2017-09-07 2022-11-14 マイクロ・テック株式会社 環状スクリーン版、環状スクリーン版製造方法及びロータリースクリーンオフセット印刷装置
DE102019216458A1 (de) 2019-10-25 2021-04-29 Gallus Ferd. Rüesch AG Drucksystem für den Rotationssiebdruck, umfassend einen Siebdruckzylinder mit nachgiebigen Oberflächenelementen
CN117429165A (zh) * 2023-11-03 2024-01-23 东莞市轩驰智能科技有限公司 曲面丝印网版成型工艺以及曲面丝印工艺

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702783A (en) * 1982-10-25 1987-10-27 Uncommon Conglomerates, Inc. Adhesive technology

Also Published As

Publication number Publication date
ITMO960086A1 (it) 1997-12-28
CN1171328A (zh) 1998-01-28
CN1122600C (zh) 2003-10-01
DE69700683T2 (de) 2000-06-21
ES2140199T3 (es) 2000-02-16
ITMO960086A0 (it) 1996-06-28
DE69700683D1 (de) 1999-12-02
EP0816072A1 (en) 1998-01-07
PT816072E (pt) 2000-04-28
IT1287451B1 (it) 1998-08-06

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