US3525598A - Composite metal strip of an aluminum base bonded to a zinc alloy - Google Patents

Composite metal strip of an aluminum base bonded to a zinc alloy Download PDF

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Publication number
US3525598A
US3525598A US3525598DA US3525598A US 3525598 A US3525598 A US 3525598A US 3525598D A US3525598D A US 3525598DA US 3525598 A US3525598 A US 3525598A
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United States
Prior art keywords
zinc
weight
aluminum
printing
maximum
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
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English (en)
Inventor
Robert J Russell
Francis T Corcoran
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Texas Instruments Inc
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Texas Instruments Inc
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Filing date
Publication date
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Publication of US3525598A publication Critical patent/US3525598A/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C18/00—Alloys based on zinc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/017—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of aluminium or an aluminium alloy, another layer being formed of an alloy based on a non ferrous metal other than aluminium
    • 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
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C20/00—Alloys based on cadmium
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/923—Physical dimension
    • Y10S428/924—Composite
    • Y10S428/925—Relative dimension specified
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-base component

Definitions

  • a strip material suitable for use in wrap around printing plates is formed of a backing layer of aluminum or aluminum alloy to which is metallurgically bonded a layer of one of the easily etched zinc alloys known as photoengravers zinc.
  • This invention relates to composite materials and articles made therefrom. More particularly this invention relates to a composite material and a printing plate formed from a composite material including a layer of easily etchable material bonded to a layer of material having high tensile strength and flexibility.
  • the invention accordingly comprises the elements and combinations of elements, features of construction and arrangements of parts, all of which will be exemplified in the structure hereinafter described and the scope of the application of which will be indicated in the appended c aims.
  • FIG. 1 is a perspective view of a sheet of composite material according to this invention.
  • FIG. 2 is an end view of a printing roller including a wrap-around printing plate formed of the composite material according to this invention.
  • the composite material and printing plate contemplated by this invention is particularly adapted for use in the letter press process of printing. It is also suitable for use in offset printing.
  • the printing plate In the letter press process of printing, it is desirable to provide a printing plate capable of being wrapped around the outside of a printing roll and capable of being clamped at its ends. To accomplish this, it is required that the printing plate be a thin, light material, that it be readily etchable, that it give a high quality printing surface and that it have high tensile strength and long wear life on a printing press and that it resist tearing, cracking or creeping.
  • photoengravers zinc Various kinds of zinc alloys, known as photoengravers zinc, have desirable etching characteristics in that the top surface of the zinc is not undercut by etching but rather tapers away from the top surface to provide strength in the print plate.
  • photoengravers zinc etches to a depth that many other materials do not etch to.
  • Such material has a fine grain size on the order of 0.016 millimeters which gives desirably high and clear definition to the finished print.
  • photoengravers zinc cannot be used in a wrap-around type of printing in other than short runs since it is brittle and weak and tends to tear or crack. In addition, it tends to creep along the sur face of the roll.
  • a composite material is formed of a first layer 14 of photoengravers zinc alloy and a second layer 12 of aluminum or an aluminum alloy. Layers 12 and 14 are metallurgically bonded to each other at the molecular level by any suitable bonding method.
  • the zinc comprises approximately of the thickness of composite plate 10 while the aluminum is approximately 40% of the thickness.
  • printing plates have been made which are .032 of an inch in thickness.
  • the preferred embodiment of applicants material is composed of: .10-.20% by weight of aluminum, .03.05% by weight magnesium; cadmium, iron and lead impurities, none of which exceed .003% each by weight and the balance zinc.
  • This combination provides the optimum alloy for etching characteristics and printing quality and in addition the best alloy for processing that is, bonding to the aluminum layer.
  • the most important additives to the zinc are the aluminum and the magnesium since these serve to refine the grain structure of the zinc and hence provide the finer printing surface characteristics.
  • the aluminum 14 may be pure aluminum which is selected for strength and ductility or any one of a number of aluminum alloys may be employed so long as they provide the strength needed to withstand the bending and tension of a wrap-around printing plate and resist tearing and cracking as well as creeping.
  • the aluminum used was aluminum alloy No. 3003.
  • This alloy includes a composition of between .1 and .15 by weight of manganese, a maximum of .6% by weight of silicon, a maximum of .7% by weight of iron, a maximum of .2% by weight of copper, a maximum of .l% by weight of zinc, a maximum of .15% by weight of other metals, and the balance aluminum.
  • This particular alloy provides the best combination of strength and ductility.
  • FIG. 2 a portion of a printing roll employing applicants wrap-around printing plate. 0n the periphery of roll 22 is located a wrap-around printing plate generally indicated by reference numeral 20.
  • Plate 20 is plate 10 wrapped around roll 22 and etched by any one of a number of known etching processes to provide the desired printing surface 32 on the exterior of plate 22. It will be understood that after the printing surface 32 has been etched and cleaned, the surface 32 may be chrome plated to improve the wear life of surface 32.
  • roller 22 includes an open cavity or recess 24 into which ends 28 of plate extend. Included within recess 24 are gripping or tensioning means 26 which may be of any well known type which can grasp the ends 28 of plate 20 and tension and retain these ends in the recess 24 to hold the plate seen in FIG. 2, the zinc layer 14 is preferably etched away in its entirety from the ends 28 of plate 20. This keeps the zinc from cracking from the surface under the strain of being tensioned and under the strain of the bend through which ends 28 undergo. The flexible and strong aluminum layer withstands the bend of end 28.
  • a printing plate formed of a composite material comprising a first layer of zinc alloy consisting of between .10% and .20% by weight of aluminum, .03%.05% by Weight of magnesium, a maximum of 003% by weight of cadmium, a maximum of 003% by weight of iron, a maximum of 003% by weight of lead and the balance zinc, and a second layer of aluminum alloy consisting of from .1%.5% by weight of manganese, a maximum of .6% by weight of silicon, a maximum of .7% by weight of iron, a maximum of .2% by weight of copper, a maximum of .1% by weight of zinc, a maximum of .15% by weight of other elements and the balance aluminum; the first layer being metallurgically bonded to the second layer and the first layer comprising approximately of the thickness of the composite material.
  • a composite material for use in wrap around printing plates comprising a first layer of easily etched photoengravers zinc alloy including small quantities of aluminum and magnesium to refine the grain structure of the Zinc, said Zinc alloy consisting of between .10% and .20% by weight of aluminum, .03%.05% by weight of magnesium, and a maximum of .003% by Weight of cadmium, a maximum of 003% by weight of iron, a maximum of 003% of lead and the balance zinc, and a second layer of aluminum, said aluminum layer comprising a manganese and silicon containing alloy of aluminum including between .1%-.15% by weight of maganese, a maximum of .6% by weight of silicon, a maximum of .7% by weight of iron, a maximum of .2% by weight of copper, a maximum of .1% by weight of zinc, a maximum of .15 by weight of other elements and the balance aluminum, said first layer being metallurgically bonded to the second layer.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)
US3525598D 1964-12-24 1968-02-06 Composite metal strip of an aluminum base bonded to a zinc alloy Expired - Lifetime US3525598A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42089564A 1964-12-24 1964-12-24
US70348268A 1968-02-06 1968-02-06

Publications (1)

Publication Number Publication Date
US3525598A true US3525598A (en) 1970-08-25

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Family Applications (1)

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US3525598D Expired - Lifetime US3525598A (en) 1964-12-24 1968-02-06 Composite metal strip of an aluminum base bonded to a zinc alloy

Country Status (6)

Country Link
US (1) US3525598A (ko)
BE (1) BE672337A (ko)
DE (1) DE1546794C3 (ko)
FR (1) FR1454398A (ko)
GB (1) GB1124046A (ko)
SE (1) SE318289B (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115604A (en) * 1975-04-07 1978-09-19 Bremat S.A. Aluminum plating process
WO1985003253A1 (en) * 1984-01-18 1985-08-01 Norsk Hydro A.S. Aluminium shapes coated with brazing material and process of coating
EP1355783A2 (en) * 2000-12-18 2003-10-29 Alterista Zinc Products, L.P. Aluminum clad zinc bimetallic coin planchet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568753A (en) * 1967-12-18 1971-03-09 Texas Instruments Inc Process of fabricating a composite zinc printing plate

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1807875A (en) * 1926-10-21 1931-06-02 Meriden Gravure Company Method of electroplating and product thereof
US2100255A (en) * 1936-01-28 1937-11-23 Reynolds Metals Co Method of making composite bodies of zinc and aluminum
US2180293A (en) * 1938-07-26 1939-11-14 Edes Mfg Company Zinc engraving plate
US2257143A (en) * 1938-05-23 1941-09-30 Otis F Wood Reproduction process
US2258520A (en) * 1940-01-09 1941-10-07 Imp Type Metal Company Engraving plate
FR1362091A (fr) * 1962-04-30 1964-05-29 Groove & Welter Fa Procédé pour fabriquer des formes métalliques attaquées chimiquement pour des clichés d'imprimerie

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1807875A (en) * 1926-10-21 1931-06-02 Meriden Gravure Company Method of electroplating and product thereof
US2100255A (en) * 1936-01-28 1937-11-23 Reynolds Metals Co Method of making composite bodies of zinc and aluminum
US2257143A (en) * 1938-05-23 1941-09-30 Otis F Wood Reproduction process
US2180293A (en) * 1938-07-26 1939-11-14 Edes Mfg Company Zinc engraving plate
US2258520A (en) * 1940-01-09 1941-10-07 Imp Type Metal Company Engraving plate
FR1362091A (fr) * 1962-04-30 1964-05-29 Groove & Welter Fa Procédé pour fabriquer des formes métalliques attaquées chimiquement pour des clichés d'imprimerie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115604A (en) * 1975-04-07 1978-09-19 Bremat S.A. Aluminum plating process
WO1985003253A1 (en) * 1984-01-18 1985-08-01 Norsk Hydro A.S. Aluminium shapes coated with brazing material and process of coating
EP1355783A2 (en) * 2000-12-18 2003-10-29 Alterista Zinc Products, L.P. Aluminum clad zinc bimetallic coin planchet
EP1355783A4 (en) * 2000-12-18 2004-10-06 Alltrista Zinc Products L P ZINC BIMETAL COIN PLATE COATED WITH ALUMINUM

Also Published As

Publication number Publication date
DE1546794B2 (de) 1973-04-12
BE672337A (ko) 1966-03-16
DE1546794C3 (de) 1973-10-31
SE318289B (ko) 1969-12-08
FR1454398A (fr) 1966-07-22
DE1546794A1 (de) 1970-10-22
GB1124046A (en) 1968-08-21

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