WO2023145221A1 - スタック性金属カップ - Google Patents

スタック性金属カップ Download PDF

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Publication number
WO2023145221A1
WO2023145221A1 PCT/JP2022/043201 JP2022043201W WO2023145221A1 WO 2023145221 A1 WO2023145221 A1 WO 2023145221A1 JP 2022043201 W JP2022043201 W JP 2022043201W WO 2023145221 A1 WO2023145221 A1 WO 2023145221A1
Authority
WO
WIPO (PCT)
Prior art keywords
inflection point
metal cup
inclination angle
region
angle difference
Prior art date
Application number
PCT/JP2022/043201
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
健 村瀬
章太 田中
信宏 篠島
江利華 佐藤
Original Assignee
東洋製罐株式会社
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 東洋製罐株式会社 filed Critical 東洋製罐株式会社
Publication of WO2023145221A1 publication Critical patent/WO2023145221A1/ja

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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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
    • 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
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • 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
    • B65D1/40—Details of walls
    • B65D1/42—Reinforcing or strengthening parts or members
    • B65D1/46—Local reinforcements, e.g. adjacent closures
    • 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
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together

Definitions

  • the present invention relates to stackable metal cups that can be stacked and stored.
  • such metal cups are often used for drinking alcoholic beverages such as beer, for example, and have the size of so-called small to large mugs.
  • it has a configuration in which the inner diameter of the opening at the upper end is set larger than the outer diameter of the bottom.
  • a metal cup having such a shape has two or three steps in the middle of the body portion, as disclosed in Patent Document 1, for example.
  • the trunk portion in order to make the inner diameter of the opening at the upper end larger than the outer diameter of the bottom portion, can be formed as a tapered inclined wall. About two steps are formed on the body wall (inclined wall).
  • the body walls are prevented from coming into close contact with each other, so that the stacked metal cups can be smoothly taken in and out.
  • an object of the present invention is to provide a stackable metal cup that effectively prevents deterioration of stackability due to deformation of the metal cup.
  • the body has a hollow shape with an open top, the inner diameter of the upper end is larger than the outer diameter of the lower end, and the shape slopes downward from the top;
  • a stackable metal cup having a bottom portion with a grounding portion connected to the lower end via a curvature portion, Assuming that the height H from the grounding portion to the upper end is 100%, the upper region A1 having a height of 70% to 100% has at least one inflection point ⁇ where the inclination angle with respect to the vertical plane of the trunk changes.
  • a stackable metal cup is provided comprising:
  • At least one inflection point ⁇ at which the inclination angle of the body portion changes is formed in the lower region A2 having a height of 40% or less.
  • the tilt angle difference ⁇ defining the inflection point ⁇ is 25 degrees or less.
  • At least four inflection point portions ⁇ at which the inclination angle of the body portion changes are formed in the intermediate region A3 between the upper region A1 and the lower region A2.
  • the inflection point ⁇ is an intersection of a reference vertical wall having an inclination angle of 2 degrees or less with respect to the vertical plane and an inclined wall having an inclination angle difference ⁇ with respect to the reference vertical wall.
  • the tilt angle difference ⁇ defining the inflection point ⁇ formed in the intermediate region A3 is the tilt defining the inflection point ⁇ present in the upper region A1 and the lower region A2. It must be smaller than the angular difference ⁇ .
  • the tilt angle difference ⁇ defining the inflection point ⁇ formed in the intermediate region A3 is 10 degrees or less.
  • the height H from the grounding portion to the upper end is in the range of 90 to 150 mm, and the inner diameter of the upper end of the opening is in the range of 65 to 95 mm.
  • the inner diameter of the upper end of the body is set larger than the outer diameter of the lower end as a whole, thereby ensuring stackability.
  • the inflection point .alpha. caused by the change in inclination angle increases the resistance of the body wall to the pressure from the circumferential direction and suppresses the shape change. That is, in the present invention, one or more such inflection point portions ⁇ are formed in the upper region A1 (the region whose height is 70% to 100%). For this reason, the upper end of the metal cup is difficult to deform. For example, even if the lower portion is deformed, the shape of the upper end of the opening is not deformed, so stackability is not impaired. This is the greatest advantage of the present invention.
  • one or more inflection point portions ⁇ as described above are also formed in the lower region A2 (the region where the height is 40% or less). That is, the lower region A2 is also less likely to be deformed, and in addition to the upper end portion of the opening, the lower end portion is also less likely to be deformed. In short, since the shape of the upper portion and the lower portion, which are most important for ensuring the stackability, are hardly deformed, the stackability is more stably ensured.
  • inflection point portions ⁇ as described above are also formed in the intermediate region A3 between the upper region A1 and the lower region A2.
  • the angle difference ⁇ that defines such an inflection point ⁇ is smaller than the angle difference ⁇ between the upper region A1 and the lower region A2, and is a level difference that can be slightly felt by touch, for example. That is, the intermediate area A3 is a portion where the metal cup is frequently gripped. Since this region is the portion where deformation occurs most frequently, it is better to provide many inflection point portions ⁇ . The inflection point portion is large enough to be clearly recognized as a step. Gender is lost.
  • an inflection point ⁇ is formed by a slight angle difference that is difficult to recognize as a step, thereby improving the strength while preventing the above inconvenience.
  • the metal cup of the present invention comprises a body 3 and a bottom 7 with a grounding portion 5.
  • a curled portion 9 is usually formed at the upper end of the body portion 3 so that sharp edges are not exposed to the outside.
  • the lower end of the trunk portion 3 is connected to the ground portion 5 via the curvature portion R.
  • the bottom portion 7 may be flat, it usually has a dome-shaped depression in the central portion, and the peripheral edge of the dome-shaped depression serves as the grounding portion 5 . With such a configuration, the metal cup 1 has high resistance to buckling.
  • the body portion 3 forms a hollow portion 10 with an open upper end, which is closed by a bottom portion 7 to accommodate a liquid such as a beverage, depending on the application.
  • the opening diameter D at the upper end of the hollow portion 10 (that is, the inner diameter at the upper end of the body portion 3) is larger than the outer diameter d at the lower end, and gradually increases downward. Inclined.
  • the metal that is the constituent material of the metal cup 1 may be various metals or alloy materials, such as aluminum, copper, iron, or alloys containing these metals, tin-plated steel sheets such as tinplate, It may be a surface-treated steel plate such as an aluminum plate subjected to a chemical conversion treatment. In general, steel, stainless steel, aluminum, aluminum alloys, etc. are suitable, and aluminum or its alloys are particularly suitable from the viewpoint of lightness and workability. Furthermore, the inner surface of the metal cup 1 may be laminated with an organic resin coating.
  • Organic resin coatings include coatings derived from paints such as acrylic paints, urethane paints, silicon paints, and fluorine paints, and thermoplastic resins such as polyethylene terephthalate (PET), which are resistant to corrosion and harsh. It is provided to suppress surface roughness during molding. Of course, the organic resin coating may also be formed on the outer surface.
  • paints such as acrylic paints, urethane paints, silicon paints, and fluorine paints
  • thermoplastic resins such as polyethylene terephthalate (PET)
  • PET polyethylene terephthalate
  • the organic resin coating may also be formed on the outer surface.
  • Such a metal cup 1 can be molded using, for example, a thin metal base plate (the inner surface and the outer surface may also be coated with the above-described organic resin).
  • a thin metal base plate the inner surface and the outer surface may also be coated with the above-described organic resin.
  • punching, drawing, redrawing and ironing are performed, and doming is performed on the bottom almost at the same time, followed by heat treatment of the trimmed portion (preventing film peeling), trimming, and curling.
  • a redrawing process in which the side wall is inclined, a heat treatment process (resin strain removal and wax removal), outer surface printing, heat treatment, and the like are performed.
  • the thickness of the center portion of the bottom portion 7 corresponds to the thickness of the base plate used for molding the cup 1, and varies depending on the use of the cup 1, but is generally 0.10 to 0.10. It has a thickness of 50 mm, and the thickness of the body portion 3 and the height H of the cup 1 (the height from the ground contact portion 5 to the upper end of the body portion 3) vary depending on the degree of rigoring, and the squeezing rate is gradually increased. As the ironing process is performed in multiple stages, the thickness of the body portion 3 is reduced and the height H is increased. Especially in recent years, this thinning has become remarkable, and the metal cup 1 of the present invention has the following form so as to be able to cope with such thinning.
  • the trunk portion 3 has many portions where the inclination angle (angle with respect to the vertical plane) changes. ⁇ is produced.
  • the angle difference ⁇ is large, the inflection point ⁇ is clearly visible as a step.
  • Such an inflection point ⁇ exhibits resistance to stress from the circumferential outer surface of the trunk portion 3 of the metal cup 1 and effectively suppresses deformation of the trunk portion 3 .
  • tilt angle means an angle with respect to a vertical plane unless otherwise specified.
  • the reference vertical wall has an angle of inclination to the vertical plane of 2 degrees or less, in particular 1 degree or less, preferably 0.5 degrees or less (i.e. the angle of inclination is approximately zero).
  • 3a and an inclined wall 3b having an angle difference ⁇ from the reference vertical wall 3a are alternately connected to form a plurality of inflection point portions ⁇ .
  • the inclination angle of the reference vertical wall 3a is smaller than the angle difference ⁇ .
  • the angular difference ⁇ (that is, the angular difference from the reference vertical wall 3a) is in the range of 25 degrees or less, and the angular differences ⁇ forming the plurality of inflection point portions ⁇ may be uniformly the same, Different values may be used provided that the tilt angle is 25 degrees or less.
  • the inclination angle of the body portion 3 with respect to the vertical plane and the angle difference ⁇ with the vertical wall 3a are, of course, on the condition that the opening diameter D at the upper end of the hollow portion 10 is larger than the outer diameter d at the lower end.
  • the outer diameter d of the lower end becomes smaller than necessary, or the number of inflection point portions ⁇ (steps) is limited.
  • the flatness of the outer surface of the body portion 3 is impaired, and the printability and label pasting properties are impaired.
  • the inclination angle (angle with respect to the vertical plane) of the trunk 3 is set to 7 degrees or less, and the angle difference ⁇ is set to 5 degrees or less, particularly 1 degree or less, most preferably 0.5 degrees or less. preferably.
  • the number of inflection point portions ⁇ can be appropriately increased. For example, it is undesirable to form an inflection point with a horizontally recessed recess.
  • the metal cup 1 provided with the body portion 3 having the inflection point ⁇ as described above has an upper region A1 whose height is 70% to 100% when the height H of the body portion 3 is 100%. , a lower area A2 whose height is 40% or less of H, and an intermediate area A3 between these areas A1 and A2.
  • the inflection point ⁇ due to the angle difference ⁇ is distributed in each of these regions.
  • the upper region A1 at least one, preferably two to four inflection point portions ⁇ are formed due to the angle difference ⁇ of the inclination angle of the body portion 3. As shown in FIG. As a result, the strength of the upper region A1 can be increased, deformation of the upper end portion of the hollow opening 10 can be effectively suppressed, and stackability can be ensured.
  • the lower region A2 it is desirable to form at least one, preferably three to five inflection point portions ⁇ caused by the angle difference ⁇ of the inclination angle of the trunk portion 3.
  • the upper region A1 but also the lower region A2 can be strengthened, deformation of the upper end portion and the lower end portion of the hollow opening 10 can be effectively suppressed, and stackability can be ensured more reliably. . That is, when stacking, not only the receiving of the metal cup 1 but also the insertion of the metal cup 1 can be performed smoothly.
  • the angle difference ⁇ between the upper region A1 and the lower region A2 is set to 25 degrees or less as described above.
  • the reference vertical wall 3a having a very small inclination angle (or zero inclination angle) with respect to the vertical plane and the inclined wall 3b having an angle difference ⁇ with respect to the reference vertical wall 3a are alternately connected.
  • an inflection point ⁇ is also formed between the tapered wall and the inclined wall 3b and between the tapered wall and the reference vertical wall 3a.
  • the metal cup 1 is most often used for drinking alcoholic beverages such as beer. Therefore, the portion of the middle area A3 is the portion that is most strongly gripped and easily deformed. Therefore, in order to strengthen this portion, it is preferable to form the above number of inflection point portions ⁇ .
  • the intermediate region A3 has a large area, if this portion is flat, when the metal cups 1 are stacked, the region where the upper and lower cups 1 that are overlapped will be in close contact with each other. is likely to decline. It is preferable to form a large number of inflection point portions ⁇ in order to avoid such deterioration in stackability.
  • the angle difference ⁇ in the inclination angle in the intermediate region A3 is smaller than that in the upper region A1 and the lower region A2. In particular, it is desirable to be 1 degree or less, most preferably 0.5 degree or less. As can be understood from FIG. 2, the inflection point ⁇ due to such a small angle difference indicates a slight step that can be recognized by touch. It is inferior to the inflection point part ⁇ in the area A2.
  • the metal cup 1 of the present invention described above is often used in place of a mug for drinking beer, so the height H is in the range of 90 to 150 mm, and the upper end of the opening Most preferably, the inner diameter is in the range 65-95 mm, especially 70-90 mm.
  • the curled portion 9 is formed at the upper end, but a horizontal flange or the like is formed instead of the curled portion 9, and after containing food etc., a lid material is provided by heat sealing or the like and used. You can also In this case, when the used cup is used repeatedly, it is advantageous for its storage. Also, after the metal cup 1 is filled with a beverage or the like, it may be used as a can with a lid attached.
  • the lid member may be any type such as a stay-on tab lid made of metal, a laminated sheet, a screw lid, or the like.
  • the lid member When the lid member is used as a stay-on tab lid and is seamed to the upper end of the barrel, the upper end of the barrel of the container may be trimmed for seaming and then flanged to form a planar portion. .
  • the lid member When the lid member is adhered to the upper end of the barrel by heat or the like as a laminated sheet, the upper end of the barrel of the container may be shaped to have a planar portion in order to secure the adhesion area.
  • a laminate having a layer made of an adhesive such as a known sealant film, a lacquer type adhesive, an easy peel adhesive, or a hot melt adhesive is employed as the heat adhesive layer.
  • the lid member When the lid member is screw-fixed to the upper end of the barrel, the upper end of the barrel of the container may have threads, and a spout-equipped lid member having a separate screw thread for screw-fixing the screw lid. may be seamed around the upper end of the body of the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Stackable Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Table Devices Or Equipment (AREA)
PCT/JP2022/043201 2022-01-25 2022-11-22 スタック性金属カップ WO2023145221A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022009650A JP7342981B2 (ja) 2022-01-25 2022-01-25 スタック性金属カップ
JP2022-009650 2022-01-25

Publications (1)

Publication Number Publication Date
WO2023145221A1 true WO2023145221A1 (ja) 2023-08-03

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ID=87471437

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/043201 WO2023145221A1 (ja) 2022-01-25 2022-11-22 スタック性金属カップ

Country Status (3)

Country Link
JP (2) JP7342981B2 (zh)
TW (1) TW202330358A (zh)
WO (1) WO2023145221A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505173A (zh) * 1971-09-16 1975-01-20
JP2001503351A (ja) * 1995-07-04 2001-03-13 ザントヘア・パックンゲン・アーゲー プラスチックを深絞り加工した包装カップ
JP2006224108A (ja) * 2005-02-15 2006-08-31 Daiwa Can Co Ltd 側壁部に環状の厚肉部を有するテーパー缶およびその製造方法
JP2020508874A (ja) * 2017-02-07 2020-03-26 ボール コーポレイションＢａｌｌ Ｃｏｒｐｏｒａｔｉｏｎ テーパ状の金属カップおよびテーパ状の金属カップを形成する方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505173A (zh) * 1971-09-16 1975-01-20
JP2001503351A (ja) * 1995-07-04 2001-03-13 ザントヘア・パックンゲン・アーゲー プラスチックを深絞り加工した包装カップ
JP2006224108A (ja) * 2005-02-15 2006-08-31 Daiwa Can Co Ltd 側壁部に環状の厚肉部を有するテーパー缶およびその製造方法
JP2020508874A (ja) * 2017-02-07 2020-03-26 ボール コーポレイションＢａｌｌ Ｃｏｒｐｏｒａｔｉｏｎ テーパ状の金属カップおよびテーパ状の金属カップを形成する方法

Also Published As

Publication number Publication date
JP2023108496A (ja) 2023-08-04
JP7342981B2 (ja) 2023-09-12
TW202330358A (zh) 2023-08-01
JP2023155313A (ja) 2023-10-20

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