EP1384581A2 - Dispositif pour imprimer des feuilles de carton entaillé - Google Patents

Dispositif pour imprimer des feuilles de carton entaillé Download PDF

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Publication number
EP1384581A2
EP1384581A2 EP03380183A EP03380183A EP1384581A2 EP 1384581 A2 EP1384581 A2 EP 1384581A2 EP 03380183 A EP03380183 A EP 03380183A EP 03380183 A EP03380183 A EP 03380183A EP 1384581 A2 EP1384581 A2 EP 1384581A2
Authority
EP
European Patent Office
Prior art keywords
plate
cardboard
printing
supplements
cardboard sheets
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.)
Granted
Application number
EP03380183A
Other languages
German (de)
English (en)
Other versions
EP1384581B1 (fr
EP1384581A3 (fr
Inventor
Angel. Pol. Ind. Los Olivos Casado Gomez
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.)
Atelier SA
Original Assignee
Atelier SA
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 ES200201768A external-priority patent/ES2239864B1/es
Priority claimed from ES200300148A external-priority patent/ES2239497B1/es
Application filed by Atelier SA filed Critical Atelier SA
Publication of EP1384581A2 publication Critical patent/EP1384581A2/fr
Publication of EP1384581A3 publication Critical patent/EP1384581A3/fr
Application granted granted Critical
Publication of EP1384581B1 publication Critical patent/EP1384581B1/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
    • B41G—APPARATUS FOR BRONZE PRINTING, LINE PRINTING, OR FOR BORDERING OR EDGING SHEETS OR LIKE ARTICLES; AUXILIARY FOR PERFORATING IN CONJUNCTION WITH PRINTING
    • B41G7/00—Auxiliary perforating apparatus associated with printing devices

Definitions

  • the present invention refers to a device especially developed to print cardboard sheets, in particular corrugated cardboard sheets, and more specifically sheets with uneven edges resulting from the slitting operation.
  • the object of the invention is to achieve a complete printing of the surface of the cardboard sheet, in spite of the crushing that occurs on the edges of the sheet produced by the slitting both longitudinally (slitter) and laterally (transverse cutter) in the corrugator machine.
  • the invention reduces trim on the cardboard sheet to a minimum and even eliminates it.
  • one of the solutions consists in the following: firstly, obtain a sheet of flat cardboard, which neither has any marked lines nor simple, double or triple scores; introduce the cardboard sheet into a printing machine to print its surface; then introduce the cardboard sheet into a stamping machine, flatbed or rotary; and finally introduce the cardboard sheet into a machine to adhere it.
  • the cardboard sheet should have a larger raw material area, i.e. of corrugated cardboard, so it can be die-stamped afterwards, with a raw material trim. Also, the sheet should be slit in the stamping machine instead of in the corrugator machine. The means of obtaining these slits are considerably more expensive in a stamping machine than in a corrugator machine, with the resulting increase in costs in the whole process caused by this.
  • the other solution consists in drastically reducing the speed of printing in order to cover the edges properly. However, this limits production speed and has a negative effect on the output of the equipment.
  • the printing device the invention proposes takes shape in the form of a plate with special characteristics, which satisfactorily solve the problems previously outlined, enabling the raw material to be fully exploited, i.e. the corrugated cardboard, assuring a complete printing and without having to reduce the speed of production, in fact increasing it if desired.
  • this plate starts out as a basic conventional plate structure with either polyester or mylar forming part of the base, commonly known as “subassembly,” upon which a constituent metal sheet of the plate is mounted.
  • This is made from a base of polymer resins with 24° Shore A real hardness, or lesser hardness, once the resin has polymerised or solidified.
  • a supplement is established producing on the working surface of the plate a boss or protuberance that is able to penetrate the line or score of the cardboard thereby assuring its printing.
  • the aforementioned supplement may either have a rectangular, semicircular or polygonal section, or even double, so that in each case the uneven shape on the surface of the plate printing is suited to the type of groove or score found in the cardboard sheet.
  • the aforementioned supplements have different sections, single or multiple, but may also be in the form of cavities, solid masses or fillings with flexible materials such as wires or metal or non-metal malleable rods.
  • the hardness of the constituent raw material of the plate, i.e. the photopolymer resins will be different in the areas where supplements are planned, i.e. lesser in those areas. This is to enable a better adaptation of the rollers that provide the plate with ink, as well as an adequate absorption of ink in various different areas so the subsequent printing is uniform across the whole surface of the cardboard.
  • the dimensions of the plate for printing should be sufficiently larger than the dimensions of the cardboard sheet in order to cater for the increase in space to be printed because of the loss of shape, which tends to be curved on the edges of the cardboard sheet.
  • a continuous strip (1) of corrugated cardboard is produced.
  • the machine provides longitudinal and marginal slits for the trimming of the continuous strip (1), specifically to eliminate from the same a narrow marginal strip (3), whose rim is usually imperfect as a result of the workings of the corrugator machine itself.
  • On the continuous strip (1) there will be a plurality of longitudinal slits (4), as well as cross-sectional slits (5), as many formats as necessary, leading to the creation of the cardboard sheets (6) each used to obtain one or more corrugated cardboard boxes.
  • the entire perimeter will need to be trimmed off as additional waste by a stamping machine, already added in when the measures of the sheet were made.
  • the device or plate of the invention is structured, as is conventional, from a base (7) known as "mylar” or “subassembly,” which constitutes the support of the plate (8) that will, after its inking, lead to the printing of the continuous strip (1) of cardboard.
  • this plate (8) in particular a main area (9) where for example real hardness is less than 24° Shore A and narrow strips (10) where the level of hardness is even less, with the peculiarity that these areas or strips (10) of lesser hardness are numerical and coincide from a positional point of view with the scores (2) and (5) of the continuous strip (1) of cardboard.
  • strips of lesser hardness (10) are devised to generate linear and external protuberances (11) in the array of the plate, as can be seen in figures 4 and 5, and are intended to be attached to the bottom of the grooves or scores (2) and (5) in the continuous strip (1) of cardboard.
  • supplements (12) are established in correlation with the strips (10) of lesser hardness between the mylar (7) and the plate (8). These supplements will give rise to unevenness in the adhesion between both elements as is also shown in figures (4) and (5).
  • These supplements (12) may take the shape shown in figure 3, a rectangular section as shown in figure 5, indicated by the reference (12') or a quadrangular, polygonal, semicircular, circular or any other type of section. In fact the supplement may be double as illustrated on the right-hand side of figure 5 and referenced with (13) etc.
  • any one of these supplements, in combination or alone, will be used so that the plate can print the aforementioned curve or linear protuberance (11) in its area of adaptation to the sheet (6) in order to adjust to the unevenness produced in the latter during the slitting phase and so that a complete printing of the surface of the sheet (6) is guaranteed right up to the rim.
  • the device of the invention has a series of advantages. These advantages focus mainly on the following aspects:

Landscapes

  • Making Paper Articles (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Laminated Bodies (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP03380183A 2002-07-26 2003-07-24 Dispositif pour imprimer des feuilles de carton entaillé Expired - Lifetime EP1384581B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES200201768A ES2239864B1 (es) 2002-07-26 2002-07-26 Procedimiento y dispositivos para imprimir totalmente, en una sola operacion, hendidos de onduladora y otras superficies irregulares de carton.
ES200201768 2002-07-26
ES200300148 2003-01-21
ES200300148A ES2239497B1 (es) 2003-01-21 2003-01-21 Sistema de impresion para cubrir masas en los bordes marginales de la plancha de carton que permite minimizar el retal perimetral sobrante, e incluso eliminarlo.

Publications (3)

Publication Number Publication Date
EP1384581A2 true EP1384581A2 (fr) 2004-01-28
EP1384581A3 EP1384581A3 (fr) 2004-06-16
EP1384581B1 EP1384581B1 (fr) 2007-04-04

Family

ID=30001916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03380183A Expired - Lifetime EP1384581B1 (fr) 2002-07-26 2003-07-24 Dispositif pour imprimer des feuilles de carton entaillé

Country Status (5)

Country Link
EP (1) EP1384581B1 (fr)
AT (1) ATE358580T1 (fr)
DE (1) DE60312931T2 (fr)
ES (1) ES2283733T3 (fr)
PT (1) PT1384581E (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605616A (en) * 1969-09-08 1971-09-20 Pannier Corp The Method and apparatus for printing surfaces having line depressions
GB2192364A (en) * 1986-07-11 1988-01-13 Tien Chin Yu Machinery Manufac Offset printing device for printing corrugated board

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605616A (en) * 1969-09-08 1971-09-20 Pannier Corp The Method and apparatus for printing surfaces having line depressions
GB2192364A (en) * 1986-07-11 1988-01-13 Tien Chin Yu Machinery Manufac Offset printing device for printing corrugated board

Also Published As

Publication number Publication date
DE60312931D1 (de) 2007-05-16
DE60312931T2 (de) 2007-12-13
PT1384581E (pt) 2007-07-11
EP1384581B1 (fr) 2007-04-04
ES2283733T3 (es) 2007-11-01
EP1384581A3 (fr) 2004-06-16
ATE358580T1 (de) 2007-04-15

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