WO2020004438A1 - Procédé de fabrication de boîte - Google Patents

Procédé de fabrication de boîte Download PDF

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Publication number
WO2020004438A1
WO2020004438A1 PCT/JP2019/025299 JP2019025299W WO2020004438A1 WO 2020004438 A1 WO2020004438 A1 WO 2020004438A1 JP 2019025299 W JP2019025299 W JP 2019025299W WO 2020004438 A1 WO2020004438 A1 WO 2020004438A1
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WO
WIPO (PCT)
Prior art keywords
printing
empty
layer
image
varnish layer
Prior art date
Application number
PCT/JP2019/025299
Other languages
English (en)
Japanese (ja)
Inventor
宏紀 尾関
幸司 山田
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 WO2020004438A1 publication Critical patent/WO2020004438A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/193—Transfer cylinders; Offset cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/08—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/24—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on flat surfaces of polyhedral articles
    • B41F17/26—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on flat surfaces of polyhedral articles by rolling contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/20—External fittings
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/34—Coverings or external coatings

Definitions

  • the present invention relates to a method for producing a printed can.
  • the present inventors have studied to solve the above problems, and completed the present invention by performing image printing on a varnish layer of an empty can having a necked opening.
  • the present invention A printing method of printing an image on the varnish layer of an empty can having a varnish layer on the surface of the can and having a necked opening.
  • the necking process requires a varnish containing a wax component.
  • the varnish contains a large amount of the wax component, ink is repelled on the varnish surface, and it is difficult to perform printing as it is. Therefore, before the printing step, it is preferable to include a surface modification step of modifying at least a part of the surface of the varnish layer, and print an image on the surface-modified varnish layer.
  • the printing step is preferably a printing step by inkjet printing.
  • the present invention is an empty can having a necked opening, and on the surface of the empty can, a varnish layer containing a wax component and an inkjet image layer are laminated in this order. It is an empty can. It is preferable that a surface-modified layer in which the surface of the varnish layer is modified is provided between the varnish layer and the inkjet image layer.
  • the printing portion is wrinkled in the necking portion or the printed portion is peeled off due to printing before the necking process.
  • the present invention enables an image to be printed on the varnish layer of an empty can after necking, so that the degree of freedom in image printing in the can manufacturing process is improved.
  • FIG. 3A is a schematic top view of a print layer on the can surface of an empty can according to an embodiment
  • FIG. 4B is a schematic cross-sectional view of an AA ′ portion
  • FIG. 3A is a schematic top view of a print layer on the can surface of an empty can according to one embodiment
  • FIG. 4B is a schematic cross-sectional view of a BB ′ portion
  • FIG. 2A is a schematic top view of a print layer on the can surface of an empty can according to one embodiment
  • FIG. 2B is a schematic cross-sectional view taken along the line CC ′.
  • FIG. 1A is a schematic top view of a print layer on a can surface of an empty can according to an embodiment
  • FIG. 2B is a schematic cross-sectional view of a DD ′ portion.
  • FIG. 1 is a schematic diagram illustrating an example of a configuration of a printing system that performs a printing process.
  • One embodiment of the present invention is a method for manufacturing a can, including a printing step of printing an image on the varnish layer of an empty can having a varnish layer on the surface of the can and having a necked opening. .
  • a necking step of necking an opening is generally performed.
  • the necking process is not particularly limited, and a known method is applied.
  • a varnish layer is applied to the surface of the empty can in order to reduce friction during the process and improve the slipperiness.
  • an image is printed on the varnish layer on the surface of the empty can.
  • a surface modification step of modifying at least a part of the surface of the varnish layer before the printing step By printing an image on the surface-modified varnish layer, the adhesion between the varnish layer and the image printed on the varnish layer is improved. Further, in the present embodiment, steps other than the surface modification step and the printing step may be included as necessary.
  • It may include a sterilization treatment step of sterilizing the filling can, or an empty can or filling placed in a temporary storage place (ie, temporarily placed or temporarily stored) by a palletizer or the like.
  • a removing step of removing the can from the temporary storage location may be included.
  • a setting step of temporarily setting an empty can or a filling can printed after the printing step may be included. It goes without saying that steps other than the above-described steps may be included.
  • the surface modification step is a step of modifying the surface of the varnish layer of the empty can.
  • the method for the surface modification step is not particularly limited as long as the adhesion between the surface of the varnish layer of the empty can and the image can be improved.
  • a method of spraying a combustion flame containing a silicon compound on the surface of the varnish layer a method of plasma-treating the surface of the varnish layer; a method of corona-treating the surface of the varnish layer; A method of coating the surface of the varnish layer with an ink receiving layer for retaining the ink on the surface of the varnish layer.
  • a silicon oxide film By spraying a combustion flame containing a silicon compound, a silicon oxide film can be formed on the surface of the varnish layer.
  • the adhesion between the ink and the varnish layer can be improved in the subsequent image printing.
  • a known method disclosed in, for example, Japanese Patent No. 3626424 or Japanese Patent No. 4366220 can be used for spraying a combustion flame containing a silicon compound.
  • the silicon compound is not particularly limited, and typically includes a silane compound such as an alkylsilane or an alkoxysilane, but is not limited thereto. These silane compounds may have a halogen such as nitrogen or chlorine, a vinyl group, an amino group, or the like.
  • the upper limit of the boiling point of the silicon compound is usually 250 ° C or lower, 200 ° C or lower, 180 ° C or lower, and 150 ° C or lower. May be.
  • the lower limit is not particularly limited and is usually 20 ° C. or higher, and may be 50 ° C. or higher.
  • the temperature of the combustion flame is not particularly limited, and is usually 500 ° C or higher, may be 550 ° C or higher, and may be 600 ° C or higher.
  • the upper limit is usually 1500 ° C. or lower, 1250 ° C. or lower, or 1000 ° C. or lower.
  • the time for spraying the combustion flame is not particularly limited, but in this embodiment, it is preferable to perform the surface modification by short-time spraying in order to spray the combustion flame to the varnish layer.
  • the spraying of the combustion flame is preferably performed a plurality of times on the varnish layer on which the image is printed.
  • the blowing time of the combustion flame is preferably within 10 seconds with respect to the part to be sprayed, and may be within 5 seconds, may be within 3 seconds, may be within 2 seconds, It may be within one second.
  • the lower limit is not particularly limited as long as the surface modification is performed, but is usually 0.001 seconds or more.
  • Fuel gas is usually used to produce a combustion flame.
  • a flammable gas such as propane gas or natural gas is typically used as the fuel gas.
  • Hydrogen, oxygen, air and the like may be appropriately mixed and used with these combustible gases.
  • the amount of the silicon compound contained in the fuel gas is not particularly limited, but is usually 1.0 ⁇ 10 ⁇ 10 mol% or more, and may be 1.0 ⁇ 10 ⁇ 9 mol% or more based on the total amount of the fuel gas. , 1.0 ⁇ 10 ⁇ 8 mol% or more.
  • the upper limit is usually 10 mol% or less, may be 5 mol% or less, and may be 1 mol% or less.
  • FIG. 1 shows an example of a surface treatment apparatus for spraying a combustion flame used for surface modification.
  • the surface treatment apparatus 10 includes a device main body 6 having gas transfer units 61a and 61b and an injection port 62, and a silicon supply unit having a nozzle 21 for supplying a silicon compound to the device main body 6, and a tank 22 for storing the silicon compound. 2 and a gas supply unit (not shown) for supplying gas to the gas transfer units 61a and 61b of the apparatus main body 6.
  • a combustion gas such as natural gas is supplied to the gas transfer unit 61a from a gas supply unit.
  • Air 4 is supplied as a carrier gas from the gas supply unit to the gas transfer unit 61b.
  • the gas transferred by the transfer units 61a and 61b is mixed with the silicon compound supplied from the silicon supply unit 2, and is injected from the injection port 62.
  • the mixed gas is ignited by a separately provided ignition means, becomes a combustion flame 5, and is injected onto the surface of the empty can 1.
  • the combustion flame 5 having the injected silicon compound forms a silicon oxide film on the surface of the empty can 1.
  • the distance between the injection port 62 of the surface treatment device 10 and the surface of the empty can 1 is not particularly limited, but is usually 1 cm or more, may be 3 cm or more, and may be 5 cm or more. Further, it is usually 30 cm or less, may be 20 cm or less, and may be 15 cm or less.
  • the varnish layer on the surface of the empty can is subjected to surface modification.
  • the empty can is not particularly limited, and typically includes an empty can for filling a food or beverage, but is not particularly limited thereto.
  • the method of making empty cans is not particularly limited, and known methods can be applied.
  • drawing, redrawing, and ironing can be mentioned.
  • a tin plate cutting step, a roll forming, a can body welding step, and a can body stretch forming can be mentioned.
  • Other examples include paneling molding for forming a can body into a deformed can having an elliptical, square, or embossed shape, molding a flange portion for winding a can lid, and necking molding.
  • the formed empty can is subjected to necking at the opening.
  • At least a part of the surface of the formed empty can, particularly the surface of the can body, may be printed separately from the image printing described above.
  • the printing method is not particularly limited, but offset printing is a typical printing method for cans.
  • the printing step may be performed on a molded empty can, or may be performed at a plate-like stage before molding.
  • a known method is applied to offset printing on a seamless can. For example, a method of transferring ink to a blanket and continuously performing offset printing on the surface of the seamless can can be applied.
  • the image is printed on the varnish layer.
  • the portion where the image is printed may not be printed at all. That is, a part of the surface of the formed empty can may be printed, or may have an unprinted portion, or may not be printed at all.
  • at least a part of the printing on the surface of the empty can may be solid-painted, for example, solid-painted on a white background.
  • the printing method of the solid coating is not limited to the offset printing, and may be performed by a white coater. The solid color is not particularly limited. Further, the printing step of the solid coating may be performed at any time after the varnish layer is formed on the surface of the empty can until the image is printed on the varnish layer.
  • the empty can pre-printed as necessary before image printing, is filled with food, beverages and other contents after the image is printed on the varnish layer of the empty can, and the contents are filled and sealed. It becomes a filled can.
  • the filled can after filling and sealing is further coated with a varnish containing wax on the surface of the can.
  • the printing step is a step of printing an image on a varnish layer of an empty can having an opening subjected to necking.
  • the image is an inkjet image.
  • the method of image printing is not particularly limited, and a known method is applied.
  • a method of directly printing ink on an empty can by inkjet printing, or a method of forming an image on a transfer medium once and then transferring the image to the empty can may be used.
  • a known method may be applied as a method of directly printing ink on an empty can by inkjet printing. Ink jet printing enables pattern printing, photo printing, image printing, and the like, and the design of the empty can surface is significantly improved.
  • the adhesion between the varnish layer and the image is improved by performing the surface modification of the varnish layer.
  • the surface modification is performed by spraying a combustion flame containing a silicon compound on the varnish layer, the ink can be spread well on the silicon oxide film, so that the base of the empty can is not transparent. It should be noted that a similar effect can be realized by screen printing or hot stamping as printing other than ink jet printing.
  • Another embodiment of the present invention is a can manufactured by the above manufacturing method, and has the following configuration. That is, it is an empty can that has been subjected to necking processing, in which a varnish layer containing a wax component and an inkjet image layer are laminated in this order on the surface of the empty can. And it is preferable that the surface of the varnish layer is modified between the varnish layer and the inkjet image layer.
  • the surface-modified layer means a varnish layer surface or the like modified by a plasma treatment, a corona treatment, or the like, in addition to a layer having a thickness such as a silicon oxide film and an ink receiving layer.
  • the can manufactured by the above manufacturing method is an empty can subjected to necking, and a solid printing layer, a varnish layer, a silicon oxide film, and an inkjet image printing layer are formed in this order on the surface of the empty can. It can be an empty can.
  • FIG. 2 is a schematic top view (a) showing a printed layer printed on the surface of an empty can developed on a plane and viewed from the top, and a schematic sectional view (b) of an AA ′ portion.
  • the developed print layer 100 has a first print unit 101 and a second print unit 102, and the first print unit 101 has an image printed by plate printing.
  • the second printing unit 102 has an inkjet image printed by inkjet printing.
  • the remaining second printing unit 102 is inkjet-printed, thereby forming a printing layer on the surface of the empty can.
  • the cross-sectional view differs between the first printing unit 101 and the second printing unit 102 as shown in FIG.
  • the first printing unit 101 is formed by laminating an image printing layer 104 and a varnish layer 105 on an empty can surface 103 in this order.
  • the second printing unit 102 has a varnish layer 105, a silicon oxide film 106, and an ink-jet image printing layer 107 laminated on the empty can surface 103 in this order. With such a configuration, it is possible to print a high-definition inkjet image printing layer only on a necessary portion.
  • FIG. 3 is a schematic top view (a) showing a print layer printed on the surface of an empty can developed on a plane and viewed from the top, and a schematic sectional view (b) of a BB ′ portion.
  • the developed print layer 200 has a first print unit 201 and a second print unit 202, and the first print unit 201 has an image printed by plate printing.
  • the second printing unit 202 has an inkjet image printed by inkjet printing.
  • a design image 204 is printed on the entire surface of the can, and a varnish is applied, that is, the design print can on which the design image is printed is subjected to surface treatment on a portion corresponding to the second printing unit 202, After that, a printing layer is formed by inkjet image printing.
  • the first printing unit 201 includes an empty can surface 203 and an image printing layer 204 and a varnish layer 205 laminated in this order.
  • the second printing section 202 has an image printing layer 204, a varnish layer 205, a silicon oxide film 206, a solid printing layer 208, and an ink jet image printing layer 207 laminated in this order on an empty can surface 203. According to such an embodiment, it is possible to print a high-definition inkjet image printing layer only on a necessary portion.
  • FIG. 4 is a schematic top view (a) showing a printed layer printed on the surface of another form of an empty can developed on a plane and viewed from the top, and a schematic cross-sectional view of a CC ′ portion (b). It is.
  • the developed print layer 300 has an entire surface inkjet image printed by inkjet printing.
  • a solid printing layer 304, a varnish layer 305, a silicon oxide film 306, and an inkjet image printing layer 307 are laminated on the empty can surface 303 in this order.
  • the solid printing layer 304 may be a white coating layer, or may be another single-color solid image. Due to the presence of the silicon oxide film 306, the inkjet image printing layer 307 has sufficient adhesion even on the varnish 305 having insufficient ink adhesion.
  • FIG. 5 illustrates another embodiment.
  • FIG. 5 is a schematic top view (a) showing a printed layer printed on the surface of another form of an empty can developed from above and shown from the top, and a schematic cross-sectional view of the DD ′ portion (b). It is.
  • the developed print layer 400 has an entire surface inkjet image printed by inkjet printing.
  • the varnish layer 405 is laminated on the empty can surface 403. That is, a silicon oxide film 406 is formed on the surface of an empty can where only a varnish is applied, and a solid print layer 404 and an ink jet image print layer 407 are laminated on the silicon oxide film 406 in this order.
  • a filling and sealing step of filling the contents into an empty can having an image printed on the varnish layer may be provided.
  • the filling / sealing step is a step of filling and sealing the contents in an empty can having an opening subjected to necking.
  • the filling and sealing step is not particularly limited as long as the contents can be filled and sealed in an empty can, and can be appropriately performed according to the type of the contents and the type of the empty can.
  • FIG. 6 is a schematic diagram illustrating an example of the configuration of the printing system I-100.
  • the printing system I-100 includes a printing station I-10 serving as an image forming unit, a transfer belt I-20 serving as an image transfer unit, a transfer station I-30 serving as a transfer unit, and a mandrel wheel I-40 serving as a can transfer unit.
  • a mandrel I-42, a washing station I-50 as a washing means, and an overcoat station I-60 as a coating means are provided.
  • the printing system I-100 may have a configuration other than these.
  • the printing station I-10 includes a printing unit I-11, and an inkjet image I-14 is formed on a blanket I-23 included in the transport belt I-20 by an inkjet printer head included in the printing unit I-11.
  • the printing unit I-11 may have only one printing unit I-10, or a plurality of printing units I-11. By having a plurality of printing units I-11, it is possible to cope with high-speed printing, and it is also possible to cope with a printing method having a large number of passes.
  • I-14 can be formed on blanket I-23.
  • the ink jet printer head included in the printing unit I-11 typically includes a plurality of nozzles that eject ink of each color of white (W), black (K), yellow (Y), magenta (M), and cyan (C).
  • a head I-12 is included.
  • the order of the colors is not particularly limited, and the colors of the inks are not limited to these. Therefore, clear ink may be used.
  • the printing unit I-11 may include a nozzle bed for forming a primer layer (Pr). In that case, by providing a nozzle head for forming a primer layer (Pr) downstream of the inkjet printer head, the formed inkjet image I-14 can be covered with the primer layer.
  • the printing unit I-11 may further include a UV irradiation unit I-13 as a curing unit.
  • the ink ejected from the inkjet printer head is a UV curable ink
  • a drying unit may be provided as a curing unit instead of the UV irradiation unit I-13.
  • the drying unit can semi-cure the inkjet image I-14 by, for example, blowing hot air onto the inkjet image I-14.
  • the curing of the inkjet image by heat may include curing the thermosetting resin contained in the ink with heat, curing the ink by blowing off the solvent contained in the ink with heat, and the like.
  • the transport belt I-20 is formed in an annular shape through a first roller I-21 and a second roller I-22, and rotates around in a direction indicated by an arrow in FIG. Is transported to the transfer station I-30.
  • the number of the blankets I-23 of the transport belt I-20 can be appropriately determined according to the circumference of the annular transport belt I-20 and according to the operating speed of the printing system.
  • the transport belt I-20 may have flexibility, but if the material is excessively flexible, the belt may be insufficiently tensioned, causing a shift during printing or transfer.
  • the material of the transport belt I-20 is not particularly limited.
  • one or more auxiliary rollers may be provided in addition to the first roller I-21 and the second roller I-22.
  • the blanket I-23 on which the inkjet image I-14 has been formed is conveyed to the transfer station I-30 along the outer periphery of the first roller I-21.
  • a plurality of cans I-41 are transported to the transfer station I-30 by the mandrel wheel I-40.
  • the can I-41 starts rotating, or immediately before the leading end of the blanket I-23 comes into contact with the can I-41.
  • -41 starts rotating, and after contact, the ink jet image I-14 formed on the blanket I-23 is transferred in the circumferential direction of the can I-41, and the ink jet image I-14 is formed on the surface of the can I-41. It is formed.
  • the blanket I-23 and the can I-41 may be properly positioned, and the positioning may be performed by a known method.
  • the rotation of the mandrel wheel I-40 itself is stopped, and the rotation of the mandrel I-42 is stopped with the mandrel wheel I-40 stopped.
  • the can I-41 may be rotated, and the ink jet image I-14 formed on the blanket I-23 may be transferred to the can I-41.
  • the present embodiment can be applied to such intermittent printing.
  • the surface of the blanket I-23 may be cleaned at the cleaning station I-50.
  • the ink jet image I-14 can suppress the remaining ink on the blanket I-23 due to the presence of the connecting member.
  • a cleaning station I-50 may be provided to clean the ink on the blanket I-23.
  • the cleaning station I-50 typically includes a cleaning agent supply unit I-51 that discharges the cleaning agent onto the blanket I-23, and a scraper I-52 that wipes off residual ink on the blanket I-23. .
  • the blanket I-23, the surface of which has been cleaned at the cleaning station I-50, is guided by the second roller I-22 and transported again to the printing station I-10, where the inkjet image I-14 is formed.
  • the can I-41 to which the inkjet image I-14 has been transferred is transported to the overcoat station I-60 by the mandrel wheel I-40.
  • the overcoat station I-60 At the overcoat station I-60, the ink jet image I-14 transferred onto the surface of the can I-41 is coated.
  • a varnish is typically used for the coating, but other varnishes may be used as long as they can protect the inkjet image and improve the durability.
  • a surface modifying means for modifying the surface of the can surface may be provided in the printing system I-100.
  • a surface modifying means may be provided upstream of the transfer station of the can conveying means. It goes without saying that pre-printing of empty cans may be performed using the printing system I-100 shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention aborde les problèmes qui se produisent lorsqu'une image est imprimée avant un processus de striction, à savoir le problème lié à l'apparition de plis sur la partie imprimée de la partie ayant été soumise au processus de striction, et le problème lié au décollement de la partie imprimée. Ces problèmes sont résolus par l'impression de l'image sur une couche de vernis d'une boîte vide présentant ladite couche de vernis sur la surface de la boîte, et présentant une partie ouverture à rétreints.
PCT/JP2019/025299 2018-06-26 2019-06-26 Procédé de fabrication de boîte WO2020004438A1 (fr)

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JP2018120421A JP7214988B2 (ja) 2018-06-26 2018-06-26 缶の製造方法
JP2018-120421 2018-06-26

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WO2020004438A1 true WO2020004438A1 (fr) 2020-01-02

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CN115103773A (zh) * 2020-05-07 2022-09-23 东洋制罐株式会社 罐容器

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