EP0006957B1 - Methode de formation de boites sans couture - Google Patents

Methode de formation de boites sans couture Download PDF

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Publication number
EP0006957B1
EP0006957B1 EP78900302A EP78900302A EP0006957B1 EP 0006957 B1 EP0006957 B1 EP 0006957B1 EP 78900302 A EP78900302 A EP 78900302A EP 78900302 A EP78900302 A EP 78900302A EP 0006957 B1 EP0006957 B1 EP 0006957B1
Authority
EP
European Patent Office
Prior art keywords
lubricant
stock material
container
drawn
disc
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
Application number
EP78900302A
Other languages
German (de)
English (en)
Other versions
EP0006957A4 (fr
EP0006957A1 (fr
Inventor
Surya K. Misra
Richard A. Openchowski
Richard D. Zenger
William Hessel
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.)
Rexam Beverage Can Co
National Can Corp
Original Assignee
National Can Corp
American National Can Co
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 National Can Corp, American National Can Co filed Critical National Can Corp
Publication of EP0006957A4 publication Critical patent/EP0006957A4/fr
Publication of EP0006957A1 publication Critical patent/EP0006957A1/fr
Application granted granted Critical
Publication of EP0006957B1 publication Critical patent/EP0006957B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/201—Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/286—Esters of polymerised unsaturated acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/241—Manufacturing joint-less pipes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/242—Hot working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/243—Cold working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/245—Soft metals, e.g. aluminum
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/246—Iron or steel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/247—Stainless steel

Definitions

  • the present invention relates generally to containers and more particularly to an improved stock material for making containers and a method for forming seamless drawn and ironed containers from the improved stock material.
  • the use of a two-piece container for packaging beer and/or carbonated beverages has become very popular in recent years.
  • the two-piece container consists of a container sidewall or body that has a unitary end wall at one end thereof.
  • a finished container is produced by initially cutting a disc from a sheet or coil of stock material and substantially simultaneously transforming the disc into a shallow cup in a conventional cupping machine that forms part of a can manufacturing line.
  • the shallow cup is then converted into a drawn and ironed container in a body maker wherein the shallow cup is reformed into a cup of different dimensions and then passed through a plurality of ironing rings that cooperate with a punch to decrease the wall thickness of the reformed cup and produce a seamless container.
  • the cup may initially have a diameter substantially equal to the final diameter so that the reforming or redrawing in the body maker is not necessary.
  • a lubricant-coolant is utilized in the cupper for providing the necessary lubricity between the surface of the stock material and the tooling.
  • the body making machinery also incorporates mechanism for flowing a lubricant-coolant to the surface of the container and to the ironing dies utilized in cooperation with the punch.
  • the lubricant-coolant consists of a mixture of water and an emulsified oil or emulsified synthetic lubricant, such as a commercially available Texaco 591 product.
  • tinplate One acceptable alternative for the drawn and ironed aluminum container is commonly referred to as tinplate.
  • This material includes a base plate of low carbon steel, such as black plate which has both surfaces covered with a thin layer of tin.
  • the tin coating acts as low friction, ductile material during the ironing process and also resists corrosion. While tinplate has been found to be an acceptable alternative for aluminum, the availability of this material is limited and the cost is high.
  • Bethlehem Steel Corporation also has continued its development efforts for producing a beer and carbonated beverages container from black plate using conventional machinery by applying organic coating to the black plate which can then be drawn and ironed at a price which is competitive to the present day tinplate or aluminium container.
  • a proposed process is disclosed in United States Patent No. 4,032,678.
  • This process contemplates the formation of polymeric thermosetting coating systems that enable container manufacturers to produce drawn and ironed beer and soft-drink cans from black plate.
  • the foregoing patent describes two coating concepts that have been developed for black plate, one of which consists of admixing a thermosetting coating and a lubricant and applying this mixture to both sides of the black plate blank and partially curing the mixture before the blank is converted into a finished container.
  • the other concept contemplates supplying the coating-lubricant mixture to only the one side of the blank (the side forming the outside of the can), and applying a coating lubricant alone to the other side of the blank (the side that forms the inside of the can).
  • Actual tests carried out using such polymeric thermosetting coatings show that containers formed from such coated black plate, but without having an internal lubricant mixed with the coating, retained substantially more coating on the finished container than when the internal lubricant was present in the coating.
  • the coating was removed in the form of large flakes or long narrow strips which would be introduced into the coolant and would rapidly clog up the filtering system for the coolant. These flakes or strips would also be carried by the container to downstream areas of the container processing line which disrupted the proper processing of the containers.
  • the present invention provides a method of forming a seamless container having a bottom wall and an integral sidewall from metal stock material by cutting a disc from said stock material, drawing said disc into a cup and substantially reducing said sidewall of said cup in a multi-stage ironing process to produce a drawn and ironed container, characterised by applying a thin layer of a lubricant only of between 0.2 mg/cm 2 and 0.5 mg/cm 2 to at least one surface of said stock material before said disc is cut out from said stock material, said lubricant consisting of only an ester of a monomeric polyhydric alcohol having 3 to 6 hydroxyls and a 14 to 20 carbon fatty acid, and forming said seamless drawn and ironed container with at least some of said lubricant remaining on said surface throughout said multi-stage ironing process.
  • a metal base of stock material that is to be used for forming a drawn and iron seamless container first has a thin layer of lubricant applied to at least one surface of the metal stock or blank and a disc is cut from the metal blank and formed into a shallow cup without the use of any additional lubricant or coolant.
  • the shallow cup is then further drawn and ironed to produce a seamless container which again is done without the use of any additional lubricant in the liquid coolant, such as water, in the drawing and ironing machine.
  • the present invention contemplates precoating a metal sheet or coil with a thin layer of lubricant to the metal sheet or coil, cutting a disc from the metal sheet or coil with the lubricant applied to it, forming a shallow cup from the disc, subsequently redrawing and ironing the shallow cup into a full sized container.
  • a stock material such as an aluminium, black plate or tinplate metal sheet or coil
  • a layer of lubricant consisting only of a fatty acid ester as defined above, applied to a surface of the stock material to a thickness of between 0.2 mg/cm 2 (1 mg/in 2 ) and 0.5 mg/cm 2 (3 mg/in 2 ) and preferably about 0.2 mg/cm 2 (1 mg/in2) and the pretreated stock material is then utilised in forming a seamless drawn and ironed container that has a bottom wall and an integral sidewall in conventional cupping and body making machinery that is presently utilized for making such containers.
  • the body maker may be provided with a water coolant that has a small amount of rust inhibitor therein to maintain the tooling below a predetermined temperature.
  • a commercially available ester lubricant made from a monomeric polyhydric alcohol having three to six hydroxyls and a 14 to 20 carbon fatty acid suitable for use in the present invention is produced by Mobil Chemical Company under the designation S-6661-003.
  • the Mobil lubricant was successfully applied to one surface of black plate, tinplate and aluminium plate by a lubricator to produce a thin layer of lubricant having a thickness or distribution of less than 0.5 mg/cm 2 (3 mg/in 2 ) on the surface of the stock material that ultimately becomes the inside of the container. If necessary, to produce the desired thickness of the layer, it may be necessary to either thin the fatty acid ester with a solvent before it is applied to the surface of the stock material, or simply by heating the material before it is applied by the lubricator. A further alternative form of heating would be to heat the rollers that form part of the lubricator.
  • Aluminium stock material in the form of plates was coated on one side with a lubricant consisting of only a fatty acid ester, such as the Mobil lubricant, to produce a layer on one surface having a distribution of approximately 0.2 mg/cm 2 (1.25 mg/in 2 ).
  • a lubricant consisting of only a fatty acid ester, such as the Mobil lubricant
  • These plates were then converted into cups and subsequently cans utilizing a commercially available cupper and body maker.
  • the plates were positioned so that the lubricated surface became the internal surface of the cup and no additional lubricant or water was needed to produce satisfactory cups from the plates.
  • the cups were then converted to finished containers in the body maker utilizing only tap water.
  • drawn and ironed containers can be formed from coated black plate, aluminium or tinplate by precoating the stock material with a thin layer of a lubricant consisting of only a fatty acid ester as defined above and the drawn and ironed containers can be formed without the use of water or emulsifiable oils in the cupper and using only water as a coolant in the body maker or drawing and ironing machine.
  • the lubricant consisting of only a fatty acid ester as defined above provides better lubrication for the tooling than the water-lubricant mixture. This is believed to result from the fact that the lubricant is initially located directly between the tooling and the container surface interface and also from the fact that the lubricant consisting of only a fatty acid ester as defined above withstands the high temperature encountered during ironing of the metal body without deterioration. Also, applying the layer of lubricant to the surface which becomes the inner surface of the container is believed to aid in stripping the ironed container from the punch.
  • both surfaces of the stock material could be coated with a lubricant and/or the distribution or thickness of the layer or layers could be increased.
  • tests have shown that increasing the thickness of the coating on one surface only will not increase the efficiency of the operation but will increase the cost without any additional benefits.
  • Respecting the two-sided coating with lubricant it was determined that the additional coating on the second side increased the costs without deriving any benefits from the increased cost.
  • tests showed that one side coated material would have enough lubricant transferred to the other side during the processing of the stock material and in the cupper and body maker to eliminate the need for applying lubricant to the second side.
  • the lubricant is preferably applied as the stock material is fed to the cupping machine.
  • the lubricant could also be applied in other ways.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

Une matiere premiere prealablement enduite utilisee dans l'a fabrication de boites en fer par etirage et une methode de formation de telles boites sont decrites dans la presente invention. Initialement, on applique a la matiere une couche de lubrifiant sur au moins une surface de la base metallique, le lubrifiant consistant essentiellement en un ester acide gros d'un alcool mono ou polyhydrique et dont la distribution est inferieure a 0,5 mg/cm2 (3 mg/pouce2). La methode consiste a appliquer la couche de lubrifiant a un metal de base tel que l'aluminium, le fer noir ou le fer blanc, a decouper un disque du metal de base et a transformer le disque en une boite en fer etiree sans appliquer encore du lubrifiant aux machines-outils. Dans une version de l'invention, une base en fer noir est enduite sur une surface d'un revetement polymerisable qui est partiellement polymerise et une couche de lubrifiant est appliquee sur l'autre surface.

Claims (10)

1. Procédé de formage de containeur sans soudure présentant une paroi de fond et une paroi latérale qui en fait partie intégrante, fait de métal comme matière première, en découpant un disque dans ladite matière première, puis en étirant ledit disque pour en faire une coupe et en réduisant essentiellement ladite paroi latérale de ladite coupe au cours d'une opération fractionnée d'estampage pour produire un conteneur embouti et estampé, caractérisé par l'application d'une mince couche de lubrifiant uniquement entre 0,2 mg/cm2 et 0,5 mg/cm2, sur une surface au moins de ladite matière première avant le découpage dudit disque dans ladite matière première, ledit lubrifiant consistant seulement en un ester d'un alcool poly- hydrique monomère ayant 3 à 6 hydroxyles et un acide gras de 14 à 20 atmoes de carbone, et par formage dudit conteneur sans soudure étiré et estampé avec un peu au moins dudit lubrifiant restant sur ladite surface au cours du processus d'estampage en plusieurs étapes.
2. Procédé selon la revendication 1, caractérisé en ce que ladite couche de lubrifiant présente une épaisseur approximative de 0,2 mg/cm2.
3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que ledit métal est de l'aluminium.
4. Procédé selon l'une des revendications 1 et 2, caractérisé en ce que ledit métal utilisé comme matière première est du fer-blanc.
5. Procédé selon l'une des revendications 1 à 4 dans laquelle ledit métal utilisé comme matère première est un rouleau de métal et où la couche de lubrifiant n'est appliquée qu'à une seule surface de ladite matière première.
6. Procédé selon l'une des revendications précédentes, dans lequel la couche de lubrifiant est appliquée à une seule surface de la matière première et est transférée à l'autre surface pendant le traitement de la matière première.
7. Procédé selon l'une des revendications 1 à 6 dans lequel ledit disque est embouti sous forme de coupe sans qu'aucun liquide de refroidissement ne soit fourni audit disque.
8. Procédé selon l'une des revendications 1 à 6, qui comporte en outre l'utilisation d'un liquide de refroidissement pendant la formation d'un conteneur embouti estampé.
9. Procédé selon la revendication 8, dans lequel l'emboutissage et l'estampage s'effectuent sans utiliser aucun lubrifiant supplémentaire dans le liquide de refroidissement.
10. Procédé selon l'une des revendications 1 à 9, dans lequel ladite première surface pourvue dudit lubrifiant se trouve à l'intérieur de ladite coupe.
EP78900302A 1977-11-16 1979-06-06 Methode de formation de boites sans couture Expired EP0006957B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US85185677A 1977-11-15 1977-11-15
US85185977A 1977-11-16 1977-11-16
US851859 1977-11-16
US851856 1986-04-14

Publications (3)

Publication Number Publication Date
EP0006957A4 EP0006957A4 (fr) 1980-01-09
EP0006957A1 EP0006957A1 (fr) 1980-01-23
EP0006957B1 true EP0006957B1 (fr) 1984-10-03

Family

ID=27127032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78900302A Expired EP0006957B1 (fr) 1977-11-16 1979-06-06 Methode de formation de boites sans couture

Country Status (4)

Country Link
EP (1) EP0006957B1 (fr)
JP (1) JPS54500094A (fr)
DE (1) DE2862444D1 (fr)
WO (1) WO1979000297A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285223A (en) * 1979-02-12 1981-08-25 Narayan Das Phosphate and ester coating method
US4381064A (en) * 1979-02-12 1983-04-26 National Can Corporation Coated sheet material and container therefrom
GB8530146D0 (en) * 1985-12-06 1986-01-15 Alcan Int Ltd Lubricating composition
ZA873747B (en) * 1986-05-30 1987-11-23 Alcan International Limited Prelubricated finstock
GB8630971D0 (en) * 1986-12-29 1987-02-04 Alcan Int Ltd Lubricant emulsion
US5228588A (en) * 1989-02-16 1993-07-20 Toyo Seikan Kaisha Ltd. Thickness-reduced deep-draw-formed can
US6098829A (en) * 1994-11-30 2000-08-08 Mchenry; Robert J. Can components having a metal-plastic-metal structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575196A (en) * 1948-10-01 1951-11-13 Standard Oil Dev Co Mixed estirs of polyhydric alcohols and dibasic acids

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282971A (en) * 1963-06-19 1966-11-01 Exxon Research Engineering Co Fatty acid esters of polyhydric alcohols
US3425379A (en) * 1964-08-18 1969-02-04 Reynolds Metals Co Method of making a metallic container
US3577753A (en) * 1968-09-30 1971-05-04 Bethlehem Steel Corp Method and apparatus for forming thin-walled cylindrical articles
US3568486A (en) * 1969-01-31 1971-03-09 Montgomery H A Co Preparation of metal for deforming operations
JPS5014233B1 (fr) * 1970-07-30 1975-05-26
US3826675A (en) * 1972-03-10 1974-07-30 Nat Steel Corp Lubricated metallic container stocks and method of preparing the same and applying an organic coating thereto
US3984599A (en) * 1973-10-30 1976-10-05 Exxon Research And Engineering Company Lubricant coating compositions for use in metal drawing operations
US4032678A (en) * 1974-09-12 1977-06-28 Bethlehem Steel Corporation Coated sheet metal and method of forming products therefrom

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575196A (en) * 1948-10-01 1951-11-13 Standard Oil Dev Co Mixed estirs of polyhydric alcohols and dibasic acids

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
Comprehensive Chemistry *
Praktische Chemie für Ingenieurberufe *
Reibung und Schmierung Fester Körper *
The Condensed Chemical Dictionary *
The Penguin Dictionary of Science *

Also Published As

Publication number Publication date
EP0006957A4 (fr) 1980-01-09
WO1979000297A1 (fr) 1979-05-31
JPS54500094A (fr) 1979-12-13
DE2862444D1 (en) 1984-11-08
EP0006957A1 (fr) 1980-01-23

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