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US3693828A - Seamless steel containers - Google Patents

Seamless steel containers Download PDF

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Publication number
US3693828A
US3693828A US57124A US3693828DA US3693828A US 3693828 A US3693828 A US 3693828A US 57124 A US57124 A US 57124A US 3693828D A US3693828D A US 3693828DA US 3693828 A US3693828 A US 3693828A
Authority
US
United States
Prior art keywords
container
side walls
axis
inwardly
central panel
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
US57124A
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English (en)
Inventor
Raymond H P Kneusel
Vinson S Potts
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.)
Crown Cork and Seal Co Inc
Original Assignee
Crown Cork and Seal Co Inc
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 Crown Cork and Seal Co Inc filed Critical Crown Cork and Seal Co Inc
Application granted granted Critical
Publication of US3693828A publication Critical patent/US3693828A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0645—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies the hollow bodies being rotated during treatment operation
    • B05B13/0681—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies the hollow bodies being rotated during treatment operation the hollow bodies comprising a closed end to be treated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/12—Cans, casks, barrels, or drums
    • B65D1/14—Cans, casks, barrels, or drums characterised by shape
    • B65D1/16—Cans, casks, barrels, or drums characterised by shape of curved cross-section, e.g. cylindrical
    • B65D1/165—Cylindrical cans

Definitions

  • ABSTRACT A steel beverage or beer can of the seamless type having a unitary body. including seamless side walls and an integral bottom with an end double seamed to the top of the side walls.
  • the bottom comprises an outer frustoconical surface extending downwardly and inwardly from the side walls, an annular bead for supporting the can, an inner frustoconical surface extending upwardly and inwardly from the annular supporting bead, and a recessed domed central panel extending inwardly and upwardly along the axis of the can from the second frustoconical surface.
  • This invention relates to so-called seamless containers. More particularly, this invention relates to containers comprising a drawn unitary body having seamless side walls and integral bottom and further comprising an end double seamed to the top of the seamless side walls.
  • Containers of this type as contrasted with conventional side-seamed containers have particular utility in the beverage or beer can industry for esthetic reasons.
  • the conventional, side-seamed can having two doubled seamed ends dominates the beverage or beer industry, but the appearance of the container leaves much to be desired.
  • the side seam of the conventional can interferes with the printing and illustrations on the can.
  • Aluminum is considered desirable for the fabrication of seamless cans because of the ductility of this metal.
  • Another drawback of aluminum is the low resistance to the internal pressure produced by the contents within the can.
  • the beverage or beer can must be capable of withstanding an internal pressure of 100 PSI (pounds per square inch). If the resistance is sufficiently low to permit eversion of the bottom at a lesser internal pressure, the can is unsuitable for carbonated beverages such as beer and soft drinks. In some instances where increased pressure resistance has been provided, the stability or the ability of the can to stand upright has decreased. In other instances, the bottom of the can has been made thicker requiring more costly aluminum.
  • a steel container capable of withstanding internal pressure of 100 PSI comprises a unitary body having seamless substantially cylindrical side walls and a bottom integrally formed with the side walls at the lower extremity thereof.
  • the bottom includes an outer substantially frustoconical surface extending downwardly and inwardly from said side walls toward the axis of said container, an annular bead extending from the first frustoconical surface providing an annular supporting surface for the container, an inner substantially frustoeonical surface extending upwardly and inwardly from the annular bead toward the axis of the container, and a recessed domed central panel extending upwardly and inwardly from the inner frustoconical surface to the axis of the container.
  • the inner frustoconical surface may taper upwardly and inwardly at an angle in excess of 5 with respect to the axis of the can. Such an angle exposes the interior of the annular head to assure uniform and proper coating even when the frustoconical surface tapers inwardly and downwardly at an angle of less than 50 with respect to the axisof the can.
  • the central panel is recessed and domed to a point above the top of the outer frustoconical surface.
  • a steel container comprises a unitary body 12 including side walls 14 and an integral bottom 16. An end 18 is double seamed to a necked-in portion of the otherwise substantially cylindrical side walls 14.
  • the. bottom 16 is provided with an easily coated, pressure resistant, and stable configuration. More particularly, the bottom 16 comprises a first and outer frustoconical surface 20 extending downwardly and continuously inwardly from the side walls 14,.an annular supporting head 22 extending from the outer frustoconical surface 20, a second or inner frustoconical surface 24 extending upwardly and continuously inwardly from the bead 22, and a recessed domed central panel 26 extending from the inner frustoconical surface 24 to the axis of the container 10.
  • FIG. 2 One very important object of the invention is to allow a uniform and an adequate coating of a material; e.g., modified vinyl acetate or vinyl chloride polymer on the interior of a seamless container with a pair of individually electrically controlled, conventional spray nozzles 27.
  • The. characteristic spraying pattern of the nozzles 27 has been depicted through the use of laterally extending arrows 28 directed toward the side walls 14 and the bottom 16. It has been found that the particular bottom configuration shown in FIG. 2 does provide a uniform and adequate coating of the bottom 16 when the conventional spray nozzle 27 is utilized.
  • the concavity of the bead 22 is dictated by an angle A between the outer frustoconical surface '20 and the axis of the container 10. As the angle A increases, the concavity of the bead 22 decreases thereby decreasing the coating difficulties. However, an increase in the angle A results in narrower base of support or smaller radius of support R provided by the annular head 22. The smaller radius of support R renders the container 10 less stable or more likely to tip over.
  • the smaller angle A not only increases the concavity of the annular bead 22 but also results in an angle A which is incompatible with the drawing angle of steel, approximately 45, as well as precluding the nesting of cans where the upper portion of the side walls 14 are necked-in as shown in FIG. 1.
  • the angle A is limited to a range of 30 to 50 with 40 being preferred.
  • the interior of the annular bead 22 defined in part by the angle A formed by the frustoconical surface 20 may be coated adequately and uniformly by providing a proper angle 13 between the inner frustoconical surface 24 and the axis of the container 10.
  • the angle B should lie in the range of 5 to 20.
  • the central panel 26 is domed with a particular radius of curvature R and recessed to a particular height H,.
  • the central panel 26 With a radius of curvature R which is no more than twice the radius R, (preferably a little larger than the container radius R and a recess height H at the edge of the panel 26 which is greater than 50 percent of the overall height I-I of the frustoconical surface 20, the central panel 26 extends above the uppermost portion of the frustoconical surface 20. With the central panel 26 domed and recessed in this manner, pressure resistance is provided .to prevent eversion. It is also believed. that central panel 26 facilitates the uniform and adequate coating of the annular bead 22.
  • Illustrative dimensions for the container of FIGS. 1 and 2 are as follows where the thickness of the central panel is 0.0118 inches.
  • FIG. 3 a prior art aluminum seamless container is shown.
  • the coating of the bottom of an aluminum container is not of particular concern in contrast with the situation for a steel container.
  • the angle B between the inner surface 44 of the bottom and the axis of the aluminum container is approximately 0 with the angle A between an outer surface 40 and the axis of the container being 375.
  • the domed and recessed central panel 46 does not extend above the top of the outer surface 40 which has an overall height l-I nor is the recess height H at the edge of the central panel 46 equalto at least 50 percent of the height H,,.
  • the seamless container of the invention as disclosed in FIGS. 1 and 2 may be formed by utilizing a plurality of steps depicted by FIGS. 4 a-e.
  • the process begins with a 107 lb. gauge (0.0118 inch) steel'blank 50 as shown in FIG. 4a.
  • the blank 50 is then drawn to form a cup 52, redrawn to form a cup 54 of lesser diameter, and wall ironed to form an elongated cup 56 as shown in FIGS. 4 b-d respectively.
  • a punch means 58 and doming die means 60 which is appropriately shaped to achieve the bottom configuration 16 shown in FIG. 2 is also depicted in FIG. 4c.
  • the shapes of the punch 58 and the die 60 provide the configuration for the bottom 16 including the frustoconical surface 20, the annular bead 22, the frustoconical surface 24, and the central panel 26.
  • the side walls 14 of the unfinished container 10 may then be trimmed, necked-in, and flanged prior to double seaming at the end 18 to the upper extremity of the side walls 14.
  • An internal pressure resistant steel container comprising a unitary body having seamless substantially cylindrical side walls and a bottom integrally formed with the side walls at the lower extremity thereof and further comprising an end double seamed to the upper extremity of the side walls, said bottom comprising an outer substantially frustoconical surface extending downwardly and inwardly from said side walls toward the axis of said container at an angle in the range of 30 to 50, a bead integrally connected with and extending downwardly from said outer frustoconical surface and providing an annular supporting surface for said can, said annular surface having a radius less than 90 percent of the container radius at said side walls, an inner substantially frustoconical surface integrally connected with and extending upwardly and inwardly from said bead toward theaxis of said container at an angle in the range of 5 to the height of said inner frustoconical.
  • a pressure resistant steel container capable of withstanding a substantial internal pressure without eversion comprising a unitary body having seamless substantially cylindrical side walls and a bottom integrally formed with the side walls at the lower extremity thereof and an end double seamed to a necked-in portion of the side walls at the upper extremity, the maximum outside diameter of the end being substantially less than the diameter of said cylindrical side walls beneath said end, said bottom comprising van outer surface extending downwardly and inwardly from said side walls toward the axis of said container, a bead integrally connected with and extending downwardly from said outer surface providing an annular supporting surface for said can, said outer surface extending sufficiently inwardly to permit said annular supporting surface to rest upon the substantially planar surface of the central panel of an end on a like container, an inner surface integrally connected with said head and extending upwardly and inwardly from said annular bead toward the axis of said container, and a downwardly concave central panel integrally connected with said inner surface and extending upwardly and inwardly from said inner surface to the

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
US57124A 1970-07-22 1970-07-22 Seamless steel containers Expired - Lifetime US3693828A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5712470A 1970-07-22 1970-07-22

Publications (1)

Publication Number Publication Date
US3693828A true US3693828A (en) 1972-09-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US57124A Expired - Lifetime US3693828A (en) 1970-07-22 1970-07-22 Seamless steel containers

Country Status (12)

Country Link
US (1) US3693828A (de)
AT (1) AT313157B (de)
BE (1) BE770314A (de)
CH (1) CH531958A (de)
DE (1) DE2127406A1 (de)
DK (1) DK140885B (de)
ES (1) ES198041Y (de)
FR (1) FR2099514B1 (de)
GB (1) GB1345040A (de)
NL (1) NL152217B (de)
SE (1) SE376886B (de)
ZA (1) ZA712360B (de)

Cited By (79)

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JPS49134485A (de) * 1973-04-25 1974-12-24
US3904069A (en) * 1972-01-31 1975-09-09 American Can Co Container
US3942673A (en) * 1974-05-10 1976-03-09 National Can Corporation Wall construction for containers
JPS5168384A (ja) * 1974-12-06 1976-06-12 Mitsubishi Metal Corp Usunikukinzokukan
US4010867A (en) * 1974-02-04 1977-03-08 United Can Company Two-piece can construction
US4054227A (en) * 1973-08-09 1977-10-18 National Steel Corporation Selective coating characteristic tinplated steel cans
JPS5319287A (en) * 1970-04-28 1978-02-22 Continental Can Co Can body
JPS5328065U (de) * 1976-08-14 1978-03-10
FR2362057A1 (fr) * 1976-08-20 1978-03-17 Daiwa Can Co Ltd Corps de recipient embouti et recipient embouti destine a contenir des boissons pressurisees
USD248544S (en) * 1975-10-22 1978-07-18 National Steel Corporation Seam-free can
US4134510A (en) * 1975-06-16 1979-01-16 Owens-Illinois, Inc. Bottle having ribbed bottom
US4151927A (en) * 1974-07-12 1979-05-01 Reynolds Metals Company Container construction
EP0005025A2 (de) * 1978-04-26 1979-10-31 Ball Corporation Leichtgewicht-Metallbehälter
US4177746A (en) * 1976-07-29 1979-12-11 Reynolds Metals Company Method of forming a container
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US4222494A (en) * 1977-03-04 1980-09-16 Reynolds Metals Company Container
US4278709A (en) * 1979-10-25 1981-07-14 Ball Corporation Method of applying water soluble internal coating to hot cans
US4294373A (en) * 1978-11-20 1981-10-13 Ball Corporation Lightweight metal container
US4515284A (en) * 1980-08-21 1985-05-07 Reynolds Metals Company Can body bottom configuration
EP0252354A2 (de) * 1986-07-03 1988-01-13 Luigi Bocchi Behälter für sprudelnde Getränke, hergestellt aus heissformbarem Kunststoff
US4919294A (en) * 1988-04-06 1990-04-24 Mitsubishi Jukogyo Kabushiki Kaisha Bottom structure of a thin-walled can
WO1990006263A1 (en) * 1988-11-30 1990-06-14 Hoechst Celanese Plastics Limited Container base of plastics
US4953738A (en) * 1988-02-19 1990-09-04 Stirbis James S One piece can body with domed bottom
US5217737A (en) * 1991-05-20 1993-06-08 Abbott Laboratories Plastic containers capable of surviving sterilization
US5222385A (en) * 1991-07-24 1993-06-29 American National Can Company Method and apparatus for reforming can bottom to provide improved strength
WO1993012975A1 (en) * 1992-01-03 1993-07-08 Abbott Laboratories Retortable plastic container
AU644856B2 (en) * 1990-04-06 1993-12-23 Ball Corporation Beverage container with improved drop resistance
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US5593063A (en) * 1992-07-30 1997-01-14 Carnaudmetalbox Plc Deformable end wall for a pressure-resistant container
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US8127955B2 (en) 2000-08-31 2012-03-06 John Denner Container structure for removal of vacuum pressure
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US8962114B2 (en) 2010-10-30 2015-02-24 Graham Packaging Company, L.P. Compression molded preform for forming invertible base hot-fill container, and systems and methods thereof
US9022776B2 (en) 2013-03-15 2015-05-05 Graham Packaging Company, L.P. Deep grip mechanism within blow mold hanger and related methods and bottles
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US3355060A (en) * 1965-05-21 1967-11-28 Reynolds Metals Co Container with improved lift-off end closure
US3272383A (en) * 1965-07-08 1966-09-13 Harvey Aluminum Inc One-piece extruded container for canning
US3343670A (en) * 1965-07-09 1967-09-26 Du Pont Manufactured article
US3349956A (en) * 1965-07-09 1967-10-31 Du Pont Article of manufacture
AT272187B (de) * 1965-10-24 1969-06-25 Continental Can Co Behälter, insbesondere Dose für unter Überdruck verpacktem Inhalt

Cited By (129)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319287A (en) * 1970-04-28 1978-02-22 Continental Can Co Can body
US3904069A (en) * 1972-01-31 1975-09-09 American Can Co Container
JPS49134485A (de) * 1973-04-25 1974-12-24
US4054227A (en) * 1973-08-09 1977-10-18 National Steel Corporation Selective coating characteristic tinplated steel cans
US4010867A (en) * 1974-02-04 1977-03-08 United Can Company Two-piece can construction
US3942673A (en) * 1974-05-10 1976-03-09 National Can Corporation Wall construction for containers
US4151927A (en) * 1974-07-12 1979-05-01 Reynolds Metals Company Container construction
JPS5168384A (ja) * 1974-12-06 1976-06-12 Mitsubishi Metal Corp Usunikukinzokukan
US4134510A (en) * 1975-06-16 1979-01-16 Owens-Illinois, Inc. Bottle having ribbed bottom
USD248544S (en) * 1975-10-22 1978-07-18 National Steel Corporation Seam-free can
US4177746A (en) * 1976-07-29 1979-12-11 Reynolds Metals Company Method of forming a container
JPS5328065U (de) * 1976-08-14 1978-03-10
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Also Published As

Publication number Publication date
DK140885B (da) 1979-12-03
BE770314A (fr) 1972-01-24
DE2127406A1 (de) 1972-02-03
ZA712360B (en) 1972-01-26
FR2099514A1 (de) 1972-03-17
FR2099514B1 (de) 1975-08-22
AT313157B (de) 1974-02-11
DK140885C (de) 1980-04-28
ES198041Y (es) 1975-11-16
CH531958A (de) 1972-12-31
NL7107713A (de) 1972-01-25
NL152217B (nl) 1977-02-15
ES198041U (es) 1975-06-01
SE376886B (de) 1975-06-16
GB1345040A (en) 1974-01-30

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