WO2022107471A1 - Corps moulé métallique - Google Patents

Corps moulé métallique Download PDF

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Publication number
WO2022107471A1
WO2022107471A1 PCT/JP2021/036903 JP2021036903W WO2022107471A1 WO 2022107471 A1 WO2022107471 A1 WO 2022107471A1 JP 2021036903 W JP2021036903 W JP 2021036903W WO 2022107471 A1 WO2022107471 A1 WO 2022107471A1
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WO
WIPO (PCT)
Prior art keywords
molded body
metal molded
tapered
shape
metal
Prior art date
Application number
PCT/JP2021/036903
Other languages
English (en)
Japanese (ja)
Inventor
江利華 佐藤
章太 田中
健 村瀬
信宏 篠島
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 WO2022107471A1 publication Critical patent/WO2022107471A1/fr

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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
    • 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
    • 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 a metal molded body having a bottom and a body and having an opening on the upper surface side.
  • cup-shaped containers with an open top surface are generally stored and transported by stacking them, but especially when the containers are made of metal, scratches occur on the parts that come into contact when stacking, and laminating or There was a problem that the paint was peeled off and the metal material was exposed. Further, when a plurality of containers are stacked, depending on the shape of the container, the outer surface of the body of the upper container and the inner surface of the body of the lower container are in close contact with each other, and as a result, these stacked containers are used. There is also a problem that so-called blocking occurs in which the air flow between the containers becomes poor and the separation becomes difficult when the containers are individually separated.
  • the present invention solves the above-mentioned problems, and when the metal materials are overlapped, the contact portion is not scratched, the exposure of the metal material is suppressed, and the metal materials are individually separated from the overlapped state. It is an object of the present invention to provide a metal molded body which can be easily separated.
  • the metal molded body according to the present invention is a metal molded body having a bottom portion, a body portion, and a cylindrical opening.
  • the bottom has an outer rising portion that extends outward and upward.
  • the body portion has a tapered portion that expands outward as it goes upward, and a constricted portion that becomes convex inward.
  • the constricted portion exists between the tapered portion and the outer rising portion, and is characterized by being formed in a curved line.
  • the metal molded body according to the present invention there is an inwardly convex curve between the tapered portion in the body portion that expands outward as it goes upward and the outward rising portion extending outward and upward in the bottom portion.
  • the formed constricted part when separating from the vertically stacked state while ensuring strength, ease of gripping, designability, ease of manufacturing, loading efficiency at the time of transportation, etc.
  • it is possible to soften the contact of the entire body when superposed it is possible to suppress the occurrence of scratches on the contact portion when superposed, and as a result, it is possible to prevent the exposure of the metal material. can.
  • the body portion of the present invention protrudes inward in the axial direction from the maximum diameter of the bottom portion. Since there is no such thing, a sufficient internal volume can be secured while obtaining the above effect.
  • the metal molded body having a radius of curvature of the outer rising portion of the present invention of 0.5 to 5.0 mm, it is possible to avoid pinpointing the contact portion related to the outer rising portion when superposed. Since it is possible to soften the contact, it is possible to surely suppress the occurrence of scratches on the contact portion when overlapping, and as a result, it is possible to surely obtain the effect of preventing the exposure of the metal material. Can be done.
  • the radius of curvature of the outer rising portion of the metal molded body is less than 0.5 mm, the outer rising portion has a sharp shape and there is a possibility that scratches may occur on the parts that come into contact with each other when they are overlapped.
  • the radius of curvature of the outer rising portion of the metal molded body exceeds 5.0 mm, molding defects may easily occur when molding the bottom portion.
  • the body portion is prevented from protruding inward from the maximum diameter of the bottom portion, so that the above effect can be obtained.
  • a sufficient internal volume can be secured.
  • the radius of curvature constituting the constricted portion of the metal molded body is less than 10 mm, the constricted portion is excessively convex inward and the portion in contact with the outer rising portion of the overlaid metal molded body is scratched. May occur.
  • the boundary between the constricted portion and the body portion may be sharply bent, which may increase the molding load during molding.
  • the protruding height of the protruding portion of the upper metal molded body with respect to the height of the metal molded body may be high, and the stacking ratio may be low.
  • the radius of curvature constituting the constricted portion of the metal molded body exceeds 500 mm, the degree of inward convexity of the constricted portion is extremely small, so that when the metal molded body is individually separated from the stacked state in the vertical direction.
  • the outer rising portion of the upper metal molded body and the lower portion of the tapered portion of the lower metal molded body Since they can be overlapped so as to be in contact with each other, storage efficiency and loading efficiency during transportation can be reliably ensured.
  • the metal molded body having a tapered portion composed of a single or a plurality of panels arranged side by side in the circumferential direction of the present invention, it is easy to superimpose and the user can easily grasp it. Further, since the panel has a peripheral surface having a smoothly continuous shape, the above effect can be surely obtained. Further, the above effect can be surely obtained by having the shape of the tapered portion having a cross section perpendicular to the axial direction of the body portion having a circular shape, a substantially polygonal shape, and a shape combining these.
  • the metal molded body of the present invention or a metal molded body in which the outer surface of the outer rising portion of the upper metal molded body abuts on the inner surface of the constricted portion of the lower metal molded body when two metal molded bodies are stacked in the vertical direction.
  • the metal molded body in which the outer surface of the outer rising portion of the upper metal molded body abuts on the inner surface of the lower portion of the tapered portion of the lower metal molded body when two bodies are stacked in the vertical direction storage efficiency and transportation It is possible to reliably secure the loading efficiency at the time.
  • the vertical sectional view which shows the outline of the metal molded body (container) which concerns on one Embodiment of this invention.
  • the end view which shows the shape of the bottom part and the lower part of the body part of the metal molded body (container) of this invention.
  • the vertical sectional view which shows the modification of the cylindrical opening of the metal molded body (container) of this invention.
  • the end view of the cross section which shows the modification of the metal molded body (container) of this invention.
  • the vertical sectional view which shows the outline of the metal molded body (container) which concerns on another embodiment of this invention.
  • the metal molded body according to the embodiment of the present invention has a bottom portion 120, a body portion 110, and a cylindrical opening 130 having an opening on the upper surface side, and two or more thereof can be stacked in the vertical direction.
  • the peripheral edge of the opening of the tubular opening 130 is formed into a curl shape so that the sharp end face does not directly hit the mouth for use as a cup.
  • the vertical direction is the axial direction in which the central axis X of the body portion 110 of the container 100 extends, and is the vertical direction when the container 100 is placed on a horizontal plane with the bottom portion 120 facing downward.
  • the bottom portion 120 has a dome portion 125 that is convex upward (upward in FIG. 2) of the container and a lower portion of the container (lower in FIG. 2) radially outside the dome portion 125. It has an annular grounding rim portion 121 having a substantially gutter-shaped cross section having a convex cross section.
  • the grounding rim portion 121 has a shape in which a stable upright form is maintained in an upright state in which the container 100 is in contact with the horizontal plane F, and the grounding portion 123 and the grounding portion 123 in contact with the horizontal plane F when placed on the horizontal plane F.
  • the outer rising portion 122 of the ground contact rim portion 121 is connected to the lower end of the constricted portion 114 of the body portion 110, which will be described later, and the inner rising portion 124 is connected to the outer peripheral end 126 of the dome portion 125.
  • the outer peripheral end 126 of the dome portion 125 is a peripheral edge having the maximum diameter of the spherical cap constituting the dome portion 125.
  • the dome portion 125 has a spherical crown shape as a whole, which is arcuate in a cross-sectional view including the central axis X related to the container 100.
  • the radius of curvature of the arc in the cross section including the central axis X is 160 mm.
  • the distance (bottom sink: BS) from the ground contact portion 123, which is the lowermost end of the ground contact rim portion 121, to the topmost portion of the dome portion 125 is 4 mm in the present embodiment.
  • the inner rising portion 124 is a portion from the ground contact portion 123 with the horizontal plane F of the container 100 to the outer peripheral end 126 of the dome portion 125, and the outer peripheral surface thereof is composed of a flat surface, a curved surface, and a combination thereof.
  • the outer rising portion 122 is a portion from the contact portion 123 with the horizontal plane F of the container 100 to the lower end of the constricted portion 114.
  • the outer rising portion 122 has an arc shape having a single radius of curvature in a cross section including the central axis X, and the radius of curvature of the arc in the cross section including the central axis X is 0.5 to 5.0 mm. In this embodiment, it is 2.3 mm.
  • the outer rising portion 122 may have a substantially arc shape including a plurality of radius of curvature portions in a cross-sectional view including the central axis X.
  • the body portion 110 has an inverted truncated cone-shaped (tapered shape) tapered portion 111 that expands outward as it goes upward, and a constricted portion 114 that connects the tapered portion 111 to the bottom portion 120. That is, the body portion 110 is continuous with the bottom portion 120 by connecting and extending the constricted portion 114 from the uppermost end 122a of the outer rising portion 122 of the bottom portion 120.
  • All the body portions 110 have a size equal to or larger than the maximum diameter of the bottom portion 120.
  • the diameter at an arbitrary position of the body portion 110 is always larger than the diameter of the uppermost end 122a of the outer rising portion 122, which is the maximum diameter of the bottom portion 120. Therefore, the diameter at an arbitrary position of the body portion 110 does not protrude radially inward from the virtual straight line L extending in the vertical direction from the uppermost end 122a of the outer rising portion 122.
  • the tapered portion 111 has no step portion and has a shape that continuously expands the diameter over the entire length in the axial direction of the body portion 110.
  • the tapered portion 111 is composed of one panel having an inverted truncated cone shape, and has a uniform tapered shape that is linear in a cross-sectional view including the central axis X. That is, the tapered portion 111 has a circular cross section perpendicular to the axial direction of the body portion 110.
  • the taper angle ⁇ of the tapered portion 111 is 2 to 15 °, which is 5 ° in the present embodiment. Containers with a taper angle of more than 15 ° will have a larger distance from the adjacent container when arranged horizontally in an upright position, resulting in poor storage efficiency. Containers with a taper angle of less than 2 ° will be in the vertical direction.
  • the panel constituting the tapered portion 111 has an outer peripheral surface and an inner peripheral surface having a shape that is smoothly continuous over the entire length in the axial direction of the body portion 110.
  • the tapered portion 111 is set to a height of 10% to 90% from the horizontal plane when the container 100 is placed upright on the horizontal plane when the total height of the container is 100%.
  • the tapered portion 111 may have a shape in which a curved shape, a linear shape, or the like whose outward spread gradually changes in angle in a cross-sectional view is combined.
  • the shape may be a shape that has been subjected to minute uneven processing such as an embossed pattern, or a shape in which a bead portion that bulges inward or outward is formed within a range that does not hinder stacking.
  • the constricted portion 114 exists between the tapered portion 111 and the outer rising portion 122, the lowermost end thereof is connected to the uppermost end 122a of the outer rising portion 122, and the uppermost end thereof is connected to the lowermost end 111z of the tapered portion 111. ing.
  • the constricted portion 114 does not have a corner portion such as a step portion, and has a shape in which the constricted portion 114 is smoothly connected while continuously expanding the diameter over the entire length in the axial direction of the body portion 110. That is, the diameter of the constricted portion 114 at an arbitrary position is always larger than the diameter of the uppermost end 122a of the outer rising portion 122.
  • the constricted portion 114 does not protrude radially inward from the virtual straight line L extending in the vertical direction from the uppermost end 122a of the outer rising portion 122.
  • the lowermost end of the constricted portion 114 is the minimum diameter of the constricted portion 114
  • the uppermost end of the constricted portion 114 is the maximum diameter of the constricted portion 114.
  • the constricted portion 114 is formed of a curve that is convex inward in a cross-sectional view including the central axis X, and the radius of curvature of the curve in the cross section including the central axis X is 10 to 500 mm. In the embodiment, it is 100 mm.
  • the curve forming the constricted portion 114 may be composed of a plurality of radius-of-curvature portions or a combination of straight lines.
  • the angle of the approximate straight line of the curve related to the constricted portion 114 that is, the angle of the virtual straight line connecting the lowermost end 111z of the tapered portion 111 and the uppermost end 122a of the outer rising portion 122 is smaller than the taper angle of the tapered portion 111.
  • it is set to 1.0 to 7.0 °, and in the present embodiment, it is 2.3 °.
  • the tubular opening 130 is connected to the uppermost end of the tapered portion 111 and is continuous to the upper opening, for example, does not extend outward and has a substantially cylindrical shape. Further, the tubular opening 130 may be formed so as to spread outward at an angle different from that of the tapered portion 111. Further, as shown in FIG. 3, the tubular opening 130 may have a stepped portion formed and a shoulder portion 131 having an enlarged diameter outward.
  • the plate material for forming the container 100 is an aluminum alloy having a plate thickness of 0.20 mm to 0.35 mm, which is laminated with a PET film of about 0.01 mm on both sides, similar to a well-known two-piece beverage can made of an aluminum alloy. Plate material is used. By using such a plate material, when molded into a container, the bottom where the plate thickness of the material is almost maintained is 0.20 mm to 0.35 mm, and 50 ⁇ 10% when the total height of the container is 100%.
  • the body portion 110 in the height range of is 0.10 to 0.22 mm in thickness.
  • the upper portion of the upper container 200 has a protruding portion 112 protruding from the upper end of the lower container 300, and the protruding height T of the protruding portion 112 is determined by the height of the constricted portion, the shape of the bottom portion, and the like.
  • the protrusion height T is 8.0 mm
  • the stack ratio which is the ratio of the protrusion height T of the protrusion 112 to the height H of the container 100, is 7.1%.
  • the metal molded product of the present invention such as the above-mentioned container 100 may be used as a can to which a lid member is attached after filling the inside with a beverage or the like.
  • the lid member may be any metal stain tab lid, a sheet made of a laminated body, a screw lid, or the like.
  • the lid member is used as a stayion tab lid and wound around the upper end of the tubular opening, the upper end of the tubular opening of the metal molded body is trimmed for winding and then flanged to form a planar portion. It suffices if it is in a state of being.
  • the upper end of the tubular opening of the metal molded body may have a planar shape in order to secure the bonding area. good.
  • the sheet made of the laminated body include aluminum foil, paper, a resin film, and a laminated material in which two or more kinds of these are laminated, and a heat adhesive layer (heat seal layer) may be further laminated.
  • a heat adhesive layer a layer made of a known sealant film, a lacquer type adhesive, an easy peel adhesive, a hot melt adhesive, or the like can be adopted.
  • the lid member When the lid member is screw-fixed to the upper end of the tubular opening as a screw lid, it may have a thread on the protruding portion such as the upper end of the tubular opening of the metal molded body, and the screw lid is screw-fixed.
  • a lid member with a spout having a separate thread may be wound around the upper end of the tubular opening of the metal molded body.
  • the metal molded body (container) according to the embodiment of the present invention has been described in detail above, the metal molded body of the present invention is not limited to the above-described embodiment, and the present invention described in the claims. It is possible to make various changes within the scope of the gist of.
  • the tapered portion 111 is not limited to being composed of a single inverted cone-shaped panel, and may be composed of a plurality of panels arranged side by side in the circumferential direction.
  • the shape of the cross section perpendicular to the axial direction of the tapered portion 111 is a substantially polygonal shape, a bow shape composed of an arc and a chord, a missing circle shape lacking a bow shape from a circle, and a shape combining these.
  • Each panel has an outer peripheral surface and an inner peripheral surface having a shape that is smoothly continuous over the entire axial length of the body portion 110. Examples of such a tapered portion include a diamond-cut portion.
  • the cross-sectional shape of the tapered portion 111 is a substantially polygonal shape, as shown in FIG. 6, the polygonal portion is composed of, for example, a straight portion 111s and a top portion 111t, and the top portion 111t is formed of an arc.
  • the radius of curvature of the arc is 2 mm or more, and is 2 to 50 mm.
  • the straight line portion 111s may be formed of a gentle curve having a radius of curvature larger than that of the arc constituting the top portion 111t.
  • the metal molded body according to another embodiment of the present invention can be a container 400 as shown below.
  • the container 400 according to another embodiment of the present invention is gradually reduced in diameter downward from the lower end of the constricted portion 114 of the body portion 110 to the lower side of the continuous outer rising portion 422. It has a bottom portion 420 having a configuration including a chime portion 427, and other configurations have the same configuration as the container 100 according to the embodiment of the present invention described above.
  • members having the same structure as the container 100 according to the embodiment of the present invention are designated by the same reference numerals.
  • the bottom portion 420 of the container 400 has a dome portion 425 that is convex upward (upper in FIG.
  • the grounding rim portion 421 has a shape in which a stable upright form is maintained in an upright state in which the container 400 is in contact with the horizontal plane F, and the grounding portion 423 and the grounding portion 423 that come into contact with the horizontal plane F when placed on the horizontal plane F.
  • the outer rising portion 422 extending upward and radially outward, the chime portion 427 interposed between the outer rising portion 422 and the grounding portion 423 and gradually reducing the diameter as it goes downward, and the grounding portion 423.
  • the outer rising portion 422 of the ground contact rim portion 421 is connected to the lower end of the constricted portion 114 of the body portion 110.
  • the dome portion 425 and the inner rising portion 424 are the same as the dome portion 125 and the inner rising portion 124 in the container 100 according to the above embodiment, respectively.
  • the outer rising portion 422 is a portion from the upper end of the chime portion 427 to the lower end of the constricted portion 114.
  • the outer rising portion 422 has an arc shape having a single radius of curvature in a cross section including the central axis X, and the radius of curvature of the arc in the cross section including the central axis X is 0.5 to 5.0 mm. In this embodiment, it is 2.3 mm. Further, the outer rising portion 422 may have a substantially arc shape including a plurality of radius of curvature portions in a cross-sectional view including the central axis X.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Stackable Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

La présente invention aborde le problème de la réalisation d'un corps moulé métallique qui ne subisse aucun dommage dans une partie de contact lorsqu'il est superposé, qui élimine l'exposition d'un matériau métallique et qui soit facile à séparer au cours d'une séparation individuelle partant d'un état de superposition.　Ce corps moulé métallique (récipient (100)) est caractérisé en ce qu'il présente une section inférieure (120), une section de tronc (110) et une section d'ouverture cylindrique (130). La section inférieure (120) a une section montante externe (122) s'étendant vers l'extérieur et vers le haut ; la section de tronc (110) présente une partie conique (111) s'étendant progressivement vers l'extérieur le long d'une direction vers le haut et une section de constriction (114) faisant saillie vers l'intérieur ; et la section de constriction (114) est présente entre la section conique (111) et la section montante externe (122) et est formée dans une courbe.
PCT/JP2021/036903 2020-11-17 2021-10-06 Corps moulé métallique WO2022107471A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-190807 2020-11-17
JP2020190807A JP2022079930A (ja) 2020-11-17 2020-11-17 金属成形体

Publications (1)

Publication Number Publication Date
WO2022107471A1 true WO2022107471A1 (fr) 2022-05-27

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ID=81708796

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/036903 WO2022107471A1 (fr) 2020-11-17 2021-10-06 Corps moulé métallique

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JP (1) JP2022079930A (fr)
TW (1) TW202225044A (fr)
WO (1) WO2022107471A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877443U (fr) * 1971-12-29 1973-09-25
JPS57120433U (fr) * 1981-01-22 1982-07-27
JP2001139012A (ja) * 1999-11-12 2001-05-22 Mitsubishi Materials Corp 缶
JP2017136605A (ja) * 2016-02-01 2017-08-10 ユニバーサル製缶株式会社 缶の製造方法
US20190112100A1 (en) * 2017-02-07 2019-04-18 Ball Corporation Tapered metal cup and method of forming the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877443U (fr) * 1971-12-29 1973-09-25
JPS57120433U (fr) * 1981-01-22 1982-07-27
JP2001139012A (ja) * 1999-11-12 2001-05-22 Mitsubishi Materials Corp 缶
JP2017136605A (ja) * 2016-02-01 2017-08-10 ユニバーサル製缶株式会社 缶の製造方法
US20190112100A1 (en) * 2017-02-07 2019-04-18 Ball Corporation Tapered metal cup and method of forming the same

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TW202225044A (zh) 2022-07-01
JP2022079930A (ja) 2022-05-27

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