EP0672545B1 - Process for preparing a surface for printing and product obtained thereby - Google Patents
Process for preparing a surface for printing and product obtained thereby Download PDFInfo
- Publication number
- EP0672545B1 EP0672545B1 EP95830089A EP95830089A EP0672545B1 EP 0672545 B1 EP0672545 B1 EP 0672545B1 EP 95830089 A EP95830089 A EP 95830089A EP 95830089 A EP95830089 A EP 95830089A EP 0672545 B1 EP0672545 B1 EP 0672545B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aluminized
- paper
- card
- zones
- printing
- 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
Links
- 238000007639 printing Methods 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims description 24
- 150000004645 aluminates Chemical class 0.000 claims description 12
- 229920000728 polyester Polymers 0.000 claims description 8
- 238000001465 metallisation Methods 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000002966 varnish Substances 0.000 claims 1
- 239000003973 paint Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000005034 decoration Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005269 aluminizing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000033458 reproduction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- 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
- B41M1/28—Printing on other surfaces than ordinary paper on metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
- B44C1/14—Metallic leaves or foils, e.g. gold leaf
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/02—Metal coatings
- D21H19/04—Metal coatings applied as foil
Definitions
- the invention relates to a process for preparing a surface on which printing will take place, and a product obtained thereby.
- the invention relates in particular to the preparation of sheets of paper or card on which offset lithographical printing is to take place after said sheets have been metallized or alluminized.
- the product obtained by means of the process is a sheet of paper or card, in particular of the type destined to be folded and glued to make up a box wrapper.
- a first process of known type involves heat-impression of aluminate on paper or card as a final operation performed on pre-printed and painted sheets, where the paint serves to protect the printed zones.
- the aluminate is monochromatic and covers the underlying tones, and can be said to have a graphic function without substituting the characteristics of an aluminate base, and is used prevalently for texts, friezes and line graphics.
- a second process involves the laying of a coat of aluminated polyester on a sheet of paper or card, and thereafter printing a white background on the zones of the paper or card where the metallized effect is not desired; these white zones will usually have photographs, pictures and in some cases texts printed on them.
- the print quality of the photographic images obtained by the above method is lower than that obtained by printing on a laminated sheet of paper or card, or without any further aluminization or metallization.
- a further drawback is the fact that the sheets of paper or card will usually be folded and glued in some well-defined zones, as they generally are used to make up boxes for containing products of various kinds.
- a further drawback inherent in printing on previously-aluminated material consists in the considerable final product cost, both with regard to the cost of the aluminate itself and the aluminizing of the whole surface of the paper of card sheet, and to to need to print zones in white paint in the areas destined to receive a four colour process.
- the four-colour process is a photomechanical technique for obtaining printed reproductions in the original shades by superposing black and the three primary colours, yellow, magenta and cyan.
- a further drawback of printing on sheets which are completely covered with polyester aluminate is the difficulty of recycling the sheets, an ecologically important factor.
- JP-A-5-77859 discloses a process for printing on wrapping paper or economy gift-wrap paper by means of the application of a transferable sheet which contains the decorations to be applied on the wrapping paper.
- the principal aim of the present invention is to obviate the abovementioned drawbacks by providing a process of preparation of a surface to be printed on, which permits of effecting on said surface a high-quality print at a considerably lower price with respect to that which could be obtained using similar-quality traditional processes.
- a further aim is to render the product obtained using the process almost entirely recyclable and usable in deeply refrigerated environments without a loss in glue effectiveness.
- the set aims are fully attained by the process, object of the present invention, for preparing a surface for printing, in particular for sheets of paper or card which are to be printed on by offset lithographical printing after having been previously aluminized or metallized, which is characterized as set out in the following claims and especially in that before a printing phase begins the surface of the paper or card to be printed on is metallized or aluminized only in specific zones of said surface.
- a further aim of the present invention is a sheet of paper or card, in particular of the type destined to be folded and glued to constitute a box, characterized in that on the printed side said sheet is partially aluminized or metallized.
- 1 denotes a sheet of paper or card of the type destined to be printed on at least one of two sides of said sheet, constituting surface destined for printing.
- Said sheet can be used for realizing, for example, a poster, or can be a sheet destined to be folded and glued to form a box for containing various articles.
- the preparation process of the surface to be printed on initially involves using a heated metal plate to impress a film of polyester aluminate in such a way that the aluminization or metallization occurs only in the zones of the sheet built up on the plate.
- the unused polyester aluminate film is eliminated, and on the surface of the sheet a layer of a few microns of aluminate remains only in predetermined zones 2, defined by the plate.
- the zones 2 do not comprise the areas destined for gluing, nor the areas destined to receive photographic or graphic images, in other words the zones where a print quality is required which is as good as like printing on non-aluminized paper or card (with respect to inking, print contrast, increase in screen fineness).
- zones destined for gluing are not aluminized so that normal paper glues can be used, and not special ones.
- lithographical offset denoted by 4, both in the non-aluminized zone (paper-laminated paper) and in the aluminized zone.
- the areas 3 which are not aluminized can be printed on to a level of quality which is qualitatively equal to printing on other, equally untreated paper or card surfaces, while in the aluminized zones 2 the printing bears all the characteristics of a metallic effect performed on paper or card surfaces which are entirely aluminized.
- a final protective varnishing phase is carried out in the printed zones.
- a further advantage is given by the fact that the partially aluminized sheet is recyclable almost in the same way as a normal sheet of paper or card. This is because the film of polyester and the aluminized zone is smaller than it would be in a completely aluminized sheet.
Landscapes
- Laminated Bodies (AREA)
- Printing Methods (AREA)
Description
Claims (9)
- Process for printing on a surface, in particular for sheets of paper or card which are to be printed on by an offset lithographic printing technique after having been previously aluminized or metallized, characterized in that before the printing phase begins the surface (1) of the paper or card is metallized or aluminized only in specific zones (2) of said surface (1) in such a way as to leave not metallized or aluminized areas (3) which are subsequently printed on by an offset lithographic printing technique.
- A process as in claim 1, wherein aluminization or metallization is realized in zones (2) which are not destined subsequently to receive glue nor destined to be overprinted with photographic or pictorial images, whereby said glue or said images are subsequently printed directly on areas (3) not metallized or aluminized.
- A process as in claim 1, characterized in that the process of a partial aluminization or metallization consists in a laying of a polyester aluminate film on said sheets of paper or card wherein the polyester aluminate spread on the printing plate which is not used is eliminated and therefore does not transfer on to the surface to be printed on.
- A process as in claim 1, wherein following aluminization or metallization of a part of the sheet of paper or card, subsequently there is a phase of lithographic overprinting (4) of the surface (1), which occurs both in the aluminized or metallized zone (2) and in areas (3) which are not aluminized or metallized.
- A process as in claim 4, wherein following lithographic overprinting a protective finishing of varnish is applied to the printed zones.
- A sheet of paper or card, defining a surface, characterized in that it comprises a partial aluminization or metallization of the surface (1) of the sheet of paper or card, which partial aluminization extends only over some predetermined zones (2) of said surface (1), and in particular does not extend over areas (3) which are subsequently printed on or which are subsequently folded and glued to obtain a box wrapping, said areas (3) being left without aluminization or metallization.
- A sheet as in claim 6, characterized in that it exhibits printed images on the metallized or aluminized zones (2).
- A process as in claim 1, wherein the zones (2) do not comprise the areas designed to receive photographic or graphic images where a print quality is required as good as like printing on not-aluminized paper or card.
- A sheet as in claim 6, wherein the zones (2) do not comprise the areas designed to receive photographic or graphic images where a print quality is required as good as like printing on not-aluminized paper or card.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPR940009 | 1994-03-16 | ||
IT94PR000009A IT1278242B1 (en) | 1994-03-16 | 1994-03-16 | PROCEDURE FOR PREPARING A SURFACE ON WHICH A PRINT IS TO BE MADE, AND PRODUCT OBTAINED WITH THE PROCEDURE. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0672545A1 EP0672545A1 (en) | 1995-09-20 |
EP0672545B1 true EP0672545B1 (en) | 1998-11-25 |
Family
ID=11395861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95830089A Expired - Lifetime EP0672545B1 (en) | 1994-03-16 | 1995-03-10 | Process for preparing a surface for printing and product obtained thereby |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0672545B1 (en) |
DE (1) | DE69506151T2 (en) |
ES (1) | ES2127500T3 (en) |
IT (1) | IT1278242B1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1092437B (en) * | 1978-02-07 | 1985-07-12 | Sambonet Spa | PROCESS FOR OBTAINING METALLIC DECORATIONS ON METAL SURFACES |
US4177310A (en) * | 1978-07-27 | 1979-12-04 | King Seeley Thermos Company | Method of metallizing paper |
GB8513621D0 (en) * | 1985-05-30 | 1985-07-03 | Nicholls E R | Dry transfers |
US5037682A (en) * | 1987-03-09 | 1991-08-06 | James River Paper Company, Inc. | Decorative printed packaging material and a process for producing the same |
DE3808689C1 (en) * | 1988-03-16 | 1989-05-24 | Fritz Borsi Kg, 7601 Schutterwald, De | |
JP2945188B2 (en) * | 1991-09-11 | 1999-09-06 | 尾池工業株式会社 | Wrapping paper |
-
1994
- 1994-03-16 IT IT94PR000009A patent/IT1278242B1/en active IP Right Grant
-
1995
- 1995-03-10 ES ES95830089T patent/ES2127500T3/en not_active Expired - Lifetime
- 1995-03-10 EP EP95830089A patent/EP0672545B1/en not_active Expired - Lifetime
- 1995-03-10 DE DE69506151T patent/DE69506151T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0672545A1 (en) | 1995-09-20 |
ITPR940009A0 (en) | 1994-03-16 |
IT1278242B1 (en) | 1997-11-17 |
ITPR940009A1 (en) | 1994-06-16 |
DE69506151D1 (en) | 1999-01-07 |
DE69506151T2 (en) | 1999-06-24 |
ES2127500T3 (en) | 1999-04-16 |
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