WO2003055757A1 - Beverage can and fabricating method thereof - Google Patents

Beverage can and fabricating method thereof Download PDF

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Publication number
WO2003055757A1
WO2003055757A1 PCT/KR2002/002375 KR0202375W WO03055757A1 WO 2003055757 A1 WO2003055757 A1 WO 2003055757A1 KR 0202375 W KR0202375 W KR 0202375W WO 03055757 A1 WO03055757 A1 WO 03055757A1
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WO
WIPO (PCT)
Prior art keywords
beverage
wall body
cylindrical wall
oblique projections
oblique
Prior art date
Application number
PCT/KR2002/002375
Other languages
French (fr)
Inventor
Byoung-Jin Lee
Original Assignee
Byoung-Jin Lee
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 Byoung-Jin Lee filed Critical Byoung-Jin Lee
Priority to AU2002359009A priority Critical patent/AU2002359009A1/en
Publication of WO2003055757A1 publication Critical patent/WO2003055757A1/en

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Classifications

    • 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—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, 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
    • 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—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, 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
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2646—Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • 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
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/08—Containers of variable capacity
    • B65D21/086—Collapsible or telescopic containers
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Definitions

  • the present invention relates to a can for holding beverages such as carbonated drink and a fabricating method thereof, and more particularly to a beverage can fabricated in such a shape that allows easy compression and disposal after use, and a fabricating method thereof.
  • Beverage cans have been widely used in various forms not only for their portability and solidity, but also for the benefits such as easy transportation and storage. Cans also provide economical benefit because used cans can be recollected and recycled. As shown in
  • FIG. 1 there are provided usually a bottom 11, a cylindrical wall body 12 and a top 13, to form a beverage can that holds drink therein.
  • a user opens an opener 14 at the top 13 of the beverage can 10 and drinks the beverage contained therein.
  • the beverage can 10 is disposed, and, because the cylindrical wall body 12 being substantially planar in an extended state, the beverage can 10 is compressed in a vertical direction by an external force of separate equipment. Then the beverage can 10 goes through the recycling process.
  • the present invention has been made to improve the problems of the conventional beverage cans as described above, and accordingly, it is an object of the present invention to provide a beverage can that is easily compressed and disposed after use, and a method for fabricating the same.
  • the beverage can according to the present invention being shaped such that it includes a plurality of oblique projections arranged on the cylindrical wall body at uniform intervals, and linear grooves formed between the oblique projections, connecting upper and lower ends of the respective oblique projections, wherein, by the torsion force exerted to the bottom and the top in opposite directions, the cylindrical wall body is twisted and compressed along the oblique projections and the linear grooves.
  • the fabricating method includes the step of pressing a first roller and a second roller along the inner and outer circumferences of the cylindrical wall body and subsequently forming oblique projections and linear grooves connecting upper and lower ends of adjacent oblique projections on the cylindrical wall body, the first roller having oblique projections formed on the outer circumference at uniform intervals and linear grooves formed on the outer circumference at uniform intervals connecting the upper and lower ends of the respective oblique projections, the second roller having oblique grooves formed on the outer circumference at uniform intervals to complementarily fit with the plural oblique projections of the first roller, and linear projections also formed on the outer circumference at uniform intervals to complementarily fit with the linear grooves of the first roller.
  • the length of the oblique projections is equal to, or smaller than the radius of the cylindrical wall body.
  • the cylindrical wall body is formed substantially in the shape of polyhedron with the plurality of oblique projections and the linear grooves formed thereon.
  • the angle of inclination of the oblique projections with respect to the bottom is expressed by
  • FIG. 1 is a schematic perspective view of a conventional beverage can
  • FIG. 2 is a schematic perspective view of a beverage can according to the present invention.
  • FIG. 3 is a schematic view showing the beverage can being twist-compressed according to the present invention.
  • FIG. 4 is a schematic longitudinal sectional view taken on vertical line along the cylindrical wall body of the beverage can according to the present invention.
  • FIG. 5 is a schematic view showing the cylindrical body in extended state according to the present invention.
  • FIG. 6 is a schematic view illustrating a method for fabricating the beverage can according to the present invention.
  • FIGS. 7a and 7b are schematic views showing first and second rollers of FIG. 6, respectively.
  • FIG. 8 is a schematic sectional view showing the main feature of the present invention to explain the fabricating method of the beverage can according to the present invention.
  • a beverage can 100 includes a bottom 110, a cylindrical wall body 120 and a top 130 for constituting a body that holds drink therein, and is further provided with a plurality of oblique projections 121 formed on the cylindrical wall body 120 at predetermined intervals, and a plurality of linear grooves connecting upper and lower ends of the oblique projections 121 adjacent to each other, the oblique projections 121 and the linear grooves functioning to guide the beverage can 100 to be twisted and compressed easily when the beverage can 100 is pressed on the bottom 110 and the top 130.
  • the reference numeral 131 denotes an opener.
  • FIG. 4 is a longitudinal sectional view of the cylindrical wall body 120, showing 6 oblique projections 121 being formed at predetermined intervals by way of an example.
  • the oblique projections 121 are projected as inner circumference of the cylindrical wall body 120 is dented inwards. It is also preferable that the cylindrical wall body 120 is formed substantially in polyhedron shape with the oblique projections 121 and the linear grooves 123 formed thereon.
  • FIG. 5 is a view showing the beverage can 100 of FIG. 4 having 6 oblique projections
  • the reference character 'X' denotes the length of the oblique projections 121, 'a' the interval between the oblique projections 121, and 'b' the circumference of the cylindrical body wall 120.
  • ' ⁇ ' denotes an angle between the oblique projections 121 and the bottom 110, i.e., the lower base of the cylindrical wall body 120, and 'L' the height of the oblique projections 121.
  • the relation between 'X', 'a', 'b' and ' ⁇ 'and 'L' can be expressed as follows.
  • the length 'X' of the oblique projections 121 is set to equal to, or smaller than the radius 'R' of the cylindrical wall body 120, i.e., X ⁇ R .
  • the distance 'a' between the oblique projections 121 and the angle ' ⁇ 'of the oblique projections 121 can be expressed by equations 1 and 2.
  • the equation 1 is derived with reference to FIGS. 4 and 5 as follows. That is, because
  • the equation 2 is derived as follows.
  • the height 'L' of the oblique projections 121 is set to satisfy the equations 3 and 4.
  • the oblique projections 121 and the linear grooves 123 formed between the oblique projections 121 under the torsion are twisted gradually, so that the cylindrical wall body 121 is twist-compressed completely, as shown in
  • FIGS. 6 to 8 are views for illustrating a fabricating method of the beverage can according to the present invention, and referring to FIGS. 6 to 8, the beverage can fabricating method according to the present invention includes the cupping step and re-drawing step of press finishing a metal plate into a vessel shape, and, prior to the step of forming the top 130, the step as shown in FIGS.
  • first roller 210 and a second roller 220 A of pressing a first roller 210 and a second roller 220 along the inner and outer circumferences of the cylindrical wall body 120, the first roller 210 having plural oblique projections 211 formed on the outer circumference at uniform intervals and linear grooves 213 also formed on the outer circumference at uniform intervals connecting the upper and lower ends of the respective oblique projections 211, and the second roller 220 having oblique grooves 221 formed on the outer circumference at uniform intervals to complementarily fit with the plural oblique projections 211, and linear projections 223 also formed on the outer circumference at uniform intervals to complementarily fit with the linear grooves 213.
  • the oblique projections 121 and the linear grooves 123 are formed on the cylindrical wall body 120 as the rollers 210, 220, which face each other in tight contact with the cylindrical wall body 120 positioned therebetween, are rotated along the inner and outer circumferences of the cylindrical wall body 120 in the same direction as shown in FIG. 8.
  • the oblique projections 121 are preferably formed outward by denting the inner circumference of the cylindrical wall body 120, while the linear grooves are curved in the inner circumference as the outer circumference of the cylindrical wall body is dented.
  • the first roller 210 is contacted tightly to the outer circumference of the cylindrical wall body 120
  • the second roller 220 is contacted tightly to the inner circumference of the cylindrical wall body 120.
  • the user can easily twist and compress the can after use.
  • the cans take less space during transportation, enhancing efficiency of transportation, and also require less storage space thus enhancing space utilization.
  • recycling process is shortened, and economic benefit by the recycling is increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

A beverage can is formed to enable easy compression thereof for a disposal, and has a cylindrical body, a plurality of oblique grooves formed on the cylindrical body at uniform intervals, a bottom and a top, in which, as the bottom and the top of the can are pressed in opposite directions, the cylindrical body is subject to torsion and crushed in the guidance of the oblique grooves. By the structure of the beverage can that is formed to be compressed by torsion in the guidance of the oblique grooves, efficiency of transportation and storage of the used cans for recycling improves, while the recycling process of the used cans becomes simpler and more economical due to the reduction of recycling process and omission of the use of compressing machines.

Description

BEVERAGE CAN AND FABRICATING METHOD THEREOF
FIELD OF THE INVENTION
The present invention relates to a can for holding beverages such as carbonated drink and a fabricating method thereof, and more particularly to a beverage can fabricated in such a shape that allows easy compression and disposal after use, and a fabricating method thereof.
DESCRIPTION OF THE RELATED ART
Beverage cans have been widely used in various forms not only for their portability and solidity, but also for the benefits such as easy transportation and storage. Cans also provide economical benefit because used cans can be recollected and recycled. As shown in
FIG. 1, there are provided usually a bottom 11, a cylindrical wall body 12 and a top 13, to form a beverage can that holds drink therein.
A user opens an opener 14 at the top 13 of the beverage can 10 and drinks the beverage contained therein. After use, the beverage can 10 is disposed, and, because the cylindrical wall body 12 being substantially planar in an extended state, the beverage can 10 is compressed in a vertical direction by an external force of separate equipment. Then the beverage can 10 goes through the recycling process.
Conventionally, since compressing the beverage cans was not easy, empty cans were usually recollected in original form, thus taking a considerable space during transportation. Accordingly, it deteriorates the efficiency of transportation, and also deteriorates efficiency of recycling because the cans in original form would usually take more storage space before the compression. Furthermore, requirement for separate compressing equipment and subsequent increase of recycling process also deteriorate economic benefits of recycling.
DISCLOSURE OF THE INVENTION
The present invention has been made to improve the problems of the conventional beverage cans as described above, and accordingly, it is an object of the present invention to provide a beverage can that is easily compressed and disposed after use, and a method for fabricating the same.
In order to achieve the above object, in a beverage can having a bottom, a cylindrical wall body and a top defining a vessel that holds a beverage therein, the beverage can according to the present invention being shaped such that it includes a plurality of oblique projections arranged on the cylindrical wall body at uniform intervals, and linear grooves formed between the oblique projections, connecting upper and lower ends of the respective oblique projections, wherein, by the torsion force exerted to the bottom and the top in opposite directions, the cylindrical wall body is twisted and compressed along the oblique projections and the linear grooves.
Also, in order to accomplish the above object, in a fabricating method of a beverage can comprising the cupping step and re-drawing step of press finishing a metal plate into a vessel shape, the fabricating method includes the step of pressing a first roller and a second roller along the inner and outer circumferences of the cylindrical wall body and subsequently forming oblique projections and linear grooves connecting upper and lower ends of adjacent oblique projections on the cylindrical wall body, the first roller having oblique projections formed on the outer circumference at uniform intervals and linear grooves formed on the outer circumference at uniform intervals connecting the upper and lower ends of the respective oblique projections, the second roller having oblique grooves formed on the outer circumference at uniform intervals to complementarily fit with the plural oblique projections of the first roller, and linear projections also formed on the outer circumference at uniform intervals to complementarily fit with the linear grooves of the first roller.
According to the present invention, the length of the oblique projections is equal to, or smaller than the radius of the cylindrical wall body. Further, the cylindrical wall body is formed substantially in the shape of polyhedron with the plurality of oblique projections and the linear grooves formed thereon.
According to one aspect of the present invention, the angle of inclination of the oblique projections with respect to the bottom is expressed by,
»-! /• π .
0 = cos0_1 (— )
N
where, 'Ν' is the number of oblique projections.
DESCRIPTION OF THE DRAWINGS
The above objects and other features of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings, in which: FIG. 1 is a schematic perspective view of a conventional beverage can;
FIG. 2 is a schematic perspective view of a beverage can according to the present invention;
FIG. 3 is a schematic view showing the beverage can being twist-compressed according to the present invention;
FIG. 4 is a schematic longitudinal sectional view taken on vertical line along the cylindrical wall body of the beverage can according to the present invention;
FIG. 5 is a schematic view showing the cylindrical body in extended state according to the present invention;
FIG. 6 is a schematic view illustrating a method for fabricating the beverage can according to the present invention;
FIGS. 7a and 7b are schematic views showing first and second rollers of FIG. 6, respectively; and
FIG. 8 is a schematic sectional view showing the main feature of the present invention to explain the fabricating method of the beverage can according to the present invention.
BEST MODE OF THE INVENTION
Hereinafter, a beverage can and a fabricating method thereof according to the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Referring first to FIGS. 2 and 3, a beverage can 100 according to the present invention includes a bottom 110, a cylindrical wall body 120 and a top 130 for constituting a body that holds drink therein, and is further provided with a plurality of oblique projections 121 formed on the cylindrical wall body 120 at predetermined intervals, and a plurality of linear grooves connecting upper and lower ends of the oblique projections 121 adjacent to each other, the oblique projections 121 and the linear grooves functioning to guide the beverage can 100 to be twisted and compressed easily when the beverage can 100 is pressed on the bottom 110 and the top 130. The reference numeral 131 denotes an opener.
Meanwhile, FIG. 4 is a longitudinal sectional view of the cylindrical wall body 120, showing 6 oblique projections 121 being formed at predetermined intervals by way of an example. Referring to FIG. 4, preferably but not limitedly, the oblique projections 121 are projected as inner circumference of the cylindrical wall body 120 is dented inwards. It is also preferable that the cylindrical wall body 120 is formed substantially in polyhedron shape with the oblique projections 121 and the linear grooves 123 formed thereon.
FIG. 5 is a view showing the beverage can 100 of FIG. 4 having 6 oblique projections
121 being extended. The reference character 'X' denotes the length of the oblique projections 121, 'a' the interval between the oblique projections 121, and 'b' the circumference of the cylindrical body wall 120. 'θ' denotes an angle between the oblique projections 121 and the bottom 110, i.e., the lower base of the cylindrical wall body 120, and 'L' the height of the oblique projections 121. The relation between 'X', 'a', 'b' and 'θ'and 'L' can be expressed as follows. In order for the beverage can 100 according to the present invention to be twisted and compressed easily, the length 'X' of the oblique projections 121 is set to equal to, or smaller than the radius 'R' of the cylindrical wall body 120, i.e., X ≥ R .
In the case that the length of the oblique projections 121 is equal to the radius 'R' of the cylindrical wall body 120, the distance 'a' between the oblique projections 121 and the angle 'θ'of the oblique projections 121 can be expressed by equations 1 and 2.
[Equation 1]
πR a = ■
N
[Equation 2]
,π . θ = cosθ- —)
N
where, 'N' denotes the number of oblique projections.
The equation 1 is derived with reference to FIGS. 4 and 5 as follows. That is, because
πR b = 2πr , and R - 2r , 'b' is arranged as b = πR . Because b = Na = πR , a = — is derived.
N
The equation 2 is derived as follows.
Because cosθ = — , θ = cos 1 — , and by a = — , θ = cosθ-1( — )is derived.
R R N N
The height 'L' of the oblique projections 121 is set to satisfy the equations 3 and 4.
[Equation 3] ,π .
L = a tan θ = a tan[cos * ( — )]
N
[Equation 4]
,π .
L = R sin θ = R sin[cos_1 (— )]
N
With the beverage can constructed as above according to the present invention, as the user or the recycler twists and compresses the can, the oblique projections 121 and the linear grooves 123 formed between the oblique projections 121 under the torsion are twisted gradually, so that the cylindrical wall body 121 is twist-compressed completely, as shown in
FIG. 3.
FIGS. 6 to 8 are views for illustrating a fabricating method of the beverage can according to the present invention, and referring to FIGS. 6 to 8, the beverage can fabricating method according to the present invention includes the cupping step and re-drawing step of press finishing a metal plate into a vessel shape, and, prior to the step of forming the top 130, the step as shown in FIGS. 6 and 7 A of pressing a first roller 210 and a second roller 220 along the inner and outer circumferences of the cylindrical wall body 120, the first roller 210 having plural oblique projections 211 formed on the outer circumference at uniform intervals and linear grooves 213 also formed on the outer circumference at uniform intervals connecting the upper and lower ends of the respective oblique projections 211, and the second roller 220 having oblique grooves 221 formed on the outer circumference at uniform intervals to complementarily fit with the plural oblique projections 211, and linear projections 223 also formed on the outer circumference at uniform intervals to complementarily fit with the linear grooves 213.
The oblique projections 121 and the linear grooves 123 are formed on the cylindrical wall body 120 as the rollers 210, 220, which face each other in tight contact with the cylindrical wall body 120 positioned therebetween, are rotated along the inner and outer circumferences of the cylindrical wall body 120 in the same direction as shown in FIG. 8.
Meanwhile, as shown in the accompanying drawings, the oblique projections 121 are preferably formed outward by denting the inner circumference of the cylindrical wall body 120, while the linear grooves are curved in the inner circumference as the outer circumference of the cylindrical wall body is dented. To meet the above conditions, the first roller 210 is contacted tightly to the outer circumference of the cylindrical wall body 120, while the second roller 220 is contacted tightly to the inner circumference of the cylindrical wall body 120.
As described above, with the beverage can according the present invention, the user can easily twist and compress the can after use. As a result, the cans take less space during transportation, enhancing efficiency of transportation, and also require less storage space thus enhancing space utilization. Furthermore, since there is no need to employ separate compressing equipment, recycling process is shortened, and economic benefit by the recycling is increased.
Although the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that the present invention should not be limited to the described preferred embodiments, but various changes and modifications can be made within the spirit and scope of the present invention as defined by the appended claims.

Claims

WHAT IS CLAIMED IS:
1. A beverage can comprising a bottom, a cylindrical wall body and a top defining a vessel that holds a beverage therein, the beverage can shaped such that the beverage can comprises:
a plurality of oblique projections arranged on the cylindrical wall body at uniform intervals; and
linear grooves formed between the oblique projections, connecting upper and lower ends of the respective oblique projections,
wherein, by the torsion force exerted to the bottom and the top in opposite directions, the cylindrical wall body is twisted and compressed along the oblique projections and the linear grooves.
2. The beverage can of claim 1, wherein the oblique projections are protruded from the outer circumference of the cylindrical wall body as the inner circumference of the cylindrical wall body is dented.
3. The beverage can of claim 1, wherein the linear grooves are curved in the inner circumference of the cylindrical wall body as the outer circumference of the cylindrical wall body is dented.
4. The beverage can of claim 1, wherein the cylindrical wall body is formed substantially in the shape of polyhedron with the plurality of oblique projections and the linear grooves formed thereon.
5. The beverage can of claim 1, wherein the angle of inclination of the oblique projections with respect to the bottom is expressed by,
,π
Θ = cosΘ-χ (—)
N
where, 'N' is the number of oblique projections.
6. A fabricating method of a beverage can comprising the cupping step and redrawing step of press finishing a metal plate into a vessel shape, comprising the step of:
pressing a first roller and a second roller along the inner and outer circumferences of the cylindrical wall body and subsequently forming oblique projections and linear grooves connecting upper and lower ends of adjacent oblique projections on the cylindrical wall body,
the first roller having oblique projections formed on the outer circumference at uniform intervals and linear grooves formed on the outer circumference at uniform intervals connecting the upper and lower ends of the respective oblique projections,
the second roller having oblique grooves formed on the outer circumference at uniform intervals to complementarily fit with the plural oblique projections of the first roller, and linear projections also formed on the outer circumference at uniform intervals to complementarily fit with the linear grooves of the first roller.
PCT/KR2002/002375 2001-12-31 2002-12-17 Beverage can and fabricating method thereof WO2003055757A1 (en)

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Application Number Priority Date Filing Date Title
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KR1020010089232A KR20030058701A (en) 2001-12-31 2001-12-31 can and forming method theirof
KR2001/89232 2001-12-31

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CN100457561C (en) * 2006-05-27 2009-02-04 苏州斯莱克精密设备有限公司 Anti-atmospheric pressure type metal pop-torp cover
FR2935960A1 (en) * 2008-09-17 2010-03-19 Eric Pascal Josselin Lombard Consumable cylindrical can compressing device, has bars or flanges welded on inner part of consumable cylindrical can that is displaced by user, and arranged at regular intervals
NL2006515C2 (en) * 2011-04-01 2012-10-02 Willemsen HOLDER WITH A VOLUME FOR ACCOMMODATING A LIQUID MATERIAL.
CN104176385A (en) * 2014-08-26 2014-12-03 李红彪 Foldable beverage packaging container

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Publication number Priority date Publication date Assignee Title
CN100457561C (en) * 2006-05-27 2009-02-04 苏州斯莱克精密设备有限公司 Anti-atmospheric pressure type metal pop-torp cover
FR2935960A1 (en) * 2008-09-17 2010-03-19 Eric Pascal Josselin Lombard Consumable cylindrical can compressing device, has bars or flanges welded on inner part of consumable cylindrical can that is displaced by user, and arranged at regular intervals
NL2006515C2 (en) * 2011-04-01 2012-10-02 Willemsen HOLDER WITH A VOLUME FOR ACCOMMODATING A LIQUID MATERIAL.
WO2012134285A1 (en) * 2011-04-01 2012-10-04 Louis Rinze Henricus Adrianus Willemsen Compressible container for metering liquid contents
JP2014509995A (en) * 2011-04-01 2014-04-24 トレンズパク Compressible container for metering liquid contents
CN104176385A (en) * 2014-08-26 2014-12-03 李红彪 Foldable beverage packaging container

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