US3493420A - Overlay for printing - Google Patents

Overlay for printing Download PDF

Info

Publication number
US3493420A
US3493420A US3493420DA US3493420A US 3493420 A US3493420 A US 3493420A US 3493420D A US3493420D A US 3493420DA US 3493420 A US3493420 A US 3493420A
Authority
US
United States
Prior art keywords
printing
chalk
overlay
plastic
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.)
Expired - Lifetime
Application number
Other languages
English (en)
Inventor
Werner Brintzinger
Rudolf Winkler
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.)
Lankes & Schwarzler Munich Fir
Lankes & Schwarzler Munich Firma Papierfabrik Scheufelen Firma
Original Assignee
Lankes & Schwarzler Munich Fir
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 Lankes & Schwarzler Munich Fir filed Critical Lankes & Schwarzler Munich Fir
Application granted granted Critical
Publication of US3493420A publication Critical patent/US3493420A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B41M9/00—Processes wherein make-ready devices are used
    • B41M9/02—Relief make-readies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31652—Of asbestos
    • Y10T428/31667—Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product

Definitions

  • An overlay for printing includes a chalk relief layer consisting of chalk and a plastic binder which is not swellable in water.
  • the chalk relief layer is applied to a smooth plastic supporting sheet.
  • An intermediate layer consisting of a water swellable size may be disposed in between the chalk relief layer and the plastic supporting sheet.
  • the present invention relates to an overly for book and illustration printing in connection with which a layer forming a relief which corresponds to the printing image after the printing and etching is applied to a supporting sheet.
  • Such sheets are today generally made in the form of so-called chalk overlays in connection with which there are applied to a supporting sheet of paper a number of layers which consist essentially of inorganic components, for instance calcium carbonate, kaolin and the like, and a binder, for instance size, which is attacked by an etching agent, particularly hypochlorite solution.
  • An imprint of the desired printing image is produced on such a overlay.
  • those points which are to be elevated are protected by the density of the printing ink applied from attack by the etching agent to a greater or lesser extent so that therefore etching takes place only at the points at which no printing ink has been applied.
  • Such overlays give a gradation of relief of correct tonal value by which even small intermediate tonal values of the picture are produced. Furthermore, such overlays have excellent strength on printing. However, they have the disadvantage that the papers used as supporting sheet are not completely dimensionally stable so that a shrinkage of up to more than 1% occurs upon the etching process and drying.
  • the supporting sheet consists of a sheet of a macromolecular plastic or contains a plastic which is not swollen or merely reversibly swollen by the etching agent.
  • Overlays produced with such supporting sheets no longer change during the etching process.
  • the changes which can be noted in the case of the known sheets as a result of variations in relative humidity in the printing plant or upon storage also are without influence on these sheets.
  • sheets of polyester, polyvinyl chloride and polyvinylidene chloride or their copolymers can be used.
  • polycarbonate, polyamide, polystyrene, polystyrene copolymers, cellulose acetates, pretreated polyolefins, Weather-proofed cellulose hydrate and the like can also be used as sheet material.
  • cross-linking agents such as methylol urea, methylol melamine, phenol formaldehyde resins, in which connection bivalent aldehydes, such as glyoxal or dialdehyde starches, possibly in the presence of acid catalysts, such as oxalic acid, ammonium chloride, zinc chloride and the like, have proven suitable.
  • cross-linking agents by themselves exert an embrittling action in the concentrations necessary for the stabilizing of the dimensions. This embrittlement is now eliminated by the further plastic dispersions used.
  • plasticizer-free copolymers of vinylidene chloride with other polymerizable compounds which thus exert a cross-linking action between the polymer particles of plastic, fibers and sizing agent of butadiene-styrene, butadiene-acrylonitrile, acrylic-acidmodified vinylidene chloride emulsions or self-crosslinking nitrogen-containing polyacrylates.
  • carboxylated dispersions which thus exert a cross-linking action between the polymer particles of plastic, fibers and sizing agent of butadiene-styrene, butadiene-acrylonitrile, acrylic-acidmodified vinylidene chloride emulsions or self-crosslinking nitrogen-containing polyacrylates.
  • papers of fully synthetic fibers for instance having a base of polyamide, can be used.
  • the chalk relief layer can be applied in customary manner to this supporting sheet.
  • this layer which is of a thickness of 0.05 to 0.3 mm. withstands the shearing forces which occur upon the printing of the overlay with a viscous printing ink, and after the etching process, withstand the pressures acting thereon upon the printing of the run, one can, in accordance with the invention, particularly when using supporting sheets having smooth surfaces and therefore for instance plastic sheets, apply first of all directly to the supporting sheet at least one intermediate layer which contains the inorganic components forming the chalk relief layer together with a plastic binder which is not swellable in water, and possibly a size which is swellable in water and can be attacked by the etching agent.
  • Such layers can also be used when it is desired not to produce overlays but rather for instance to make possible or improve the printability of plastic sheets, especially with regard to printing with ink customary in paper printing. The same applies with respect to writa'bility or the like.
  • Second intermediate layer If two intermediate layers are used, they can have the following composition- (1) First intermediate layer:
  • Second intermediate layer Parts China clay 70-100 Barium sulfate 10-20 Water 25-80 Vinyl isobutyl ether/methacrylate copolymer 15-50 'Defoaming agent 0.1-0.3 Wetting agent 0.l5-0.4 Organic coloring substance 0.2-0.6 (2) Second intermediate layer:
  • plastic binder there can also be used in the above-indicated concentration carboxylated butadiene-styrene latices, plasticized chlorinecontaiuing vinyl copolymers, polyacrylates, polyvinylacetates or methylol compounds (5 to referred to the binder), hardened polyvinyl methyl ethers and polyvinyl isobutyl ethers.
  • These intermediate layers can be applied in a thickness of about 0.01 mm. to the supporting sheet.
  • supporting sheets consisting in particular of rigid PVC or polyesters are suitable.
  • the layers required for the relief etching can be applied in any desired manner by multiple coating onto these intermediate layers.
  • these intermediate layers there can be used the compositions which have been known for a long time in which calcium carbonate, kaolin, barium sulfate and satin white, as well as corresponding quantities of animal sizes and softening agents are used.
  • Etchable chalk relief coatings can be applied also to both sides of the overlay sheet in accordance with the invention, as is already known also in the case of the known chalk overlay sheets.
  • the overlay sheets in accordance with the invention dry very fast after the etching and there need not be applied any special measures for the drying as was the case in connection with the known overlay sheets. They can also be stored without special precautionary measures, since they are insensitive to atmospheric moisture.
  • overlay sheets in accordance with the invention need not have a rear coating applied to them as was necessary in part in the case of the known sheets since the etching agent also passed through the paper supporting sheet and attacked the chalk layer so that the hollowing out of said layers was feared. Such an action on the part of the etching agent through the supporting sheet is naturally no longer to be feared when the supporting sheet consists of a sheet of plastic.
  • an overlay for printing consisting of a supporting sheet, a chalk relief layer applied thereto, said chalk relief layer consisting essentially of calcium carbonate, china clay, kaolin, barium sulfate, or combinations thereof, and a water-swellable size, said'size being attackable by an etching agent, said chalk relief layer being adapted to permit the formation of a relief corresponding to a printed image, wherein the improvementcomprises said supporting sheet being formed entirely from .a substance taken from the class consisting of polyester, polyvinyl chloride, polyvinylidine chloride and copolymers thereof, polycarbonate, polyarnide, polystyrene, polystyrene copolymers, cellulose acetates, pre-treated polyolefins and weather-proofed cellulose hydrate, and the surface of said supporting sheet in contact with said chalk relief layer is smooth.
  • An overlay according to claim 1 including an intermediate layer disposed between said chalk relief layer and said supporting sheet, said intermediate layer comprising calcium carbonate, chinaclay, kaolin, barium sulfate, or combinations thereof, and a plastic binder which is not swellable in water.
  • An overlay according to claim 2 including a secon intermediate layer disposed between said chalk relief layer and said supporting sheet, said second intermediate layer comprising calcium carbonate, china clay, kaolin, barium sulfate, or combinations thereof, and a water-swellable size which is attackableby an etching agent.

Landscapes

  • Laminated Bodies (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Printing Methods (AREA)
  • Color Printing (AREA)
US3493420D 1964-03-20 1969-02-25 Overlay for printing Expired - Lifetime US3493420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0047358 1964-03-20

Publications (1)

Publication Number Publication Date
US3493420A true US3493420A (en) 1970-02-03

Family

ID=7271996

Family Applications (1)

Application Number Title Priority Date Filing Date
US3493420D Expired - Lifetime US3493420A (en) 1964-03-20 1969-02-25 Overlay for printing

Country Status (5)

Country Link
US (1) US3493420A (enrdf_load_stackoverflow)
AT (1) AT271516B (enrdf_load_stackoverflow)
BE (1) BE661379A (enrdf_load_stackoverflow)
ES (1) ES311140A1 (enrdf_load_stackoverflow)
GB (1) GB1079381A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867179A (en) * 1972-10-06 1975-02-18 William H Page Coated polymeric fibers
CN110370856A (zh) * 2019-07-24 2019-10-25 邱张云 一种植物工艺品及其制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014104105A1 (de) * 2014-03-25 2015-10-01 AXIAL Ingenieurgesellschaft für Maschinenbau mbH Zurichtbogen für Präge- und Stanzmaschinen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US892166A (en) * 1906-08-02 1908-06-30 Eduard Lankes Process of preparing printers' overlays and underlays.
US1324038A (en) * 1919-12-09 Printer s overlay and underlay board and process of making same
US2265974A (en) * 1938-12-17 1941-12-09 Graphic Arts Res Corp Mechanical overlay
US2680682A (en) * 1950-01-26 1954-06-08 Allied Chem & Dye Corp Paper of improved wet strength
US2964423A (en) * 1958-11-19 1960-12-13 Du Pont Drafting films

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1324038A (en) * 1919-12-09 Printer s overlay and underlay board and process of making same
US892166A (en) * 1906-08-02 1908-06-30 Eduard Lankes Process of preparing printers' overlays and underlays.
US2265974A (en) * 1938-12-17 1941-12-09 Graphic Arts Res Corp Mechanical overlay
US2680682A (en) * 1950-01-26 1954-06-08 Allied Chem & Dye Corp Paper of improved wet strength
US2964423A (en) * 1958-11-19 1960-12-13 Du Pont Drafting films

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867179A (en) * 1972-10-06 1975-02-18 William H Page Coated polymeric fibers
CN110370856A (zh) * 2019-07-24 2019-10-25 邱张云 一种植物工艺品及其制备方法

Also Published As

Publication number Publication date
AT271516B (de) 1969-06-10
BE661379A (enrdf_load_stackoverflow) 1965-07-16
GB1079381A (en) 1967-08-16
ES311140A1 (es) 1965-11-16

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