WO2019235482A1 - Système d'impression continue - Google Patents

Système d'impression continue Download PDF

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Publication number
WO2019235482A1
WO2019235482A1 PCT/JP2019/022197 JP2019022197W WO2019235482A1 WO 2019235482 A1 WO2019235482 A1 WO 2019235482A1 JP 2019022197 W JP2019022197 W JP 2019022197W WO 2019235482 A1 WO2019235482 A1 WO 2019235482A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
inkjet
printing
transfer
forming
Prior art date
Application number
PCT/JP2019/022197
Other languages
English (en)
Japanese (ja)
Inventor
宏紀 尾関
土谷　展生
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 WO2019235482A1 publication Critical patent/WO2019235482A1/fr

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Classifications

    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • 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
    • B41F17/14—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 on articles of finite length
    • B41F17/20—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 on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors
    • B41F17/22—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 on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors 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
    • B41J2/0057—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 where an intermediate transfer member receives the ink before transferring it on the printing material
    • 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

Definitions

  • the present invention relates to a system for continuously printing images on a can using ink jet printing.
  • Patent Document 1 discloses a printing system that includes an image forming station, a drying station, and an impression station as an inkjet offset printing method, and an intermediate transfer member includes a flexible belt.
  • Patent Document 2 discloses, as an ink jet offset printing method, an ink jet head, an annular transfer medium, a driving means for rotationally driving the transfer medium, a transfer means for transferring ink on the transfer medium, and an ink.
  • a printing apparatus is disclosed that includes first and second curing means for curing, and a small roller that peels off the recording medium.
  • an intermediate transfer medium such as a transfer belt is used, an inkjet image formed thereon is transported, and transferred to a printing material to continuously print the inkjet image on the printing material. be able to.
  • the present inventors have studied to continuously print an inkjet image on a can surface using an inkjet offset printing method as disclosed in Patent Documents 1 and 2 described above.
  • an ink jet printed image formed on a transfer medium is transferred to a can, the ink jet printed image is not transferred well.
  • the adhesiveness between the transferred inkjet image and the can may be insufficient.
  • the present invention uses such an inkjet offset printing method, solves the problem of transfer failure that occurs when continuously printing inkjet images on the surface of the can, and improves the adhesion between the inkjet image after transfer and the can. Is.
  • the inventors of the present invention have studied to solve the above problems, and by providing an adhesive resin layer on the inkjet image before the inkjet image is transferred to the can, the inkjet image is smoothly transferred to the can.
  • the present invention has been completed.
  • the present invention comprises an image forming means for forming an inkjet image; An image conveying means for conveying the formed inkjet image to a transfer means; Transfer means for transferring an inkjet image conveyed by the image conveying means to a can; An inkjet continuous printing system comprising: a can conveying means for conveying a can, which is a printing object, to the transfer means, A continuous printing system having an adhesive layer forming means for forming an adhesive resin layer on the ink jet image formed on the image conveying means by the image forming means.
  • the image forming means preferably includes a plurality of printing units having an inkjet head. Further, it is preferable that the image forming apparatus includes an inkjet image on the image conveying unit and / or a curing unit that cures the resin layer on the image conveying unit.
  • the can conveying unit is supported by a mandrel and conveyed to the transfer unit. In addition, it is preferable to transfer the inkjet image to the can by rotating the can during the transfer.
  • Another aspect of the present invention is a printing step for forming an inkjet image on an image conveying means, A resin layer forming step of forming an adhesive resin layer on the ink jet image formed on the image conveying means; and the ink jet image and the adhesive resin layer formed on the image conveying means can be printed materials. And a transfer step for transferring to the printing can.
  • a form provided with a curing unit that cures an ink jet image on the image conveying unit and / or a resin layer on the image conveying unit is preferable.
  • Still another embodiment of the present invention is an inkjet printing can provided with an inkjet image
  • An inkjet printing can having an adhesive resin layer between the inkjet image and a printing material can and having the inkjet image overcoated.
  • the present invention it is possible to provide an inkjet continuous printing system that enables continuous printing of inkjet images on the can surface by an inkjet offset printing method.
  • the can surface can be printed with high productivity, and since it is an offset printing method, it is easy to secure a space where a plurality of printing units can be arranged.
  • By providing a plurality of printing units it is possible to cope with a printing method having a large number of passes, and a high-definition image can be formed on the can surface.
  • the adhesion between the inkjet image and the can is improved.
  • FIG. 1 is a schematic diagram illustrating an example of a configuration of a printing system according to an embodiment of the present invention. It is the schematic which shows another example of a structure of the printing system which concerns on embodiment of this invention.
  • an image forming unit that forms an inkjet image, an image conveying unit that conveys the formed inkjet image to a transfer unit, and an inkjet image conveyed by the image conveying unit are transferred to a can
  • a printing system which is a specific example of the present embodiment will be exemplified and described.
  • hardening here includes hardening and semi-hardening.
  • FIG. 1 is a schematic diagram illustrating an example of the configuration of the printing system 100.
  • the printing system 100 includes a printing station 10 that is an image forming unit, a conveying belt 20 that is an image conveying unit, a transfer station 30 that is a transferring unit, a mandrel 40 and a mandrel 42 that are can conveying units, a cleaning station 50 that is a cleaning unit, And the overcoat station 60 which is a coating means is provided.
  • the printing system 100 may have a configuration other than these.
  • the printing station 10 includes a printing unit 11, and an inkjet image 14 is formed on a blanket 23 included in the transport belt 20 by an inkjet printer head included in the printing unit 11.
  • a printing unit 11 there may be only one printing unit 11 in the printing station 10, it is preferable to have a plurality of printing units.
  • the inkjet printer head included in the printing unit 11 typically has a plurality of nozzle heads 12 that eject ink of each color of white (W), black (K), yellow (Y), magenta (M), and cyan (C). Is included.
  • the order of colors is not particularly limited, and the color of the ink is not limited to these. Therefore, colorless clear ink may be used.
  • the printing unit 11 may include a UV irradiation unit 13 as a curing unit.
  • a UV irradiation unit 13 As a curing unit.
  • the ink discharged from the ink jet printer head is UV curable ink, it is possible to suppress ink remaining that may occur when the ink jet image 14 is transferred to the can 41 at the transfer station by being semi-cured or cured by UV irradiation.
  • a drying unit may be provided as a curing unit.
  • the drying means can semi-cure or cure the inkjet image 14 by spraying warm air on the inkjet image.
  • a heat source such as a heater inside the conveyor belt, heat may be supplied to the inkjet image 14 to be semi-cured or cured.
  • the curing of the inkjet image by heat may include curing the thermosetting resin contained in the ink by heat, curing the ink by blowing off the solvent contained in the ink with heat, and the like.
  • the inkjet image 14 may be formed directly on the transport belt 20 without using the blanket 23. In this case, it is preferable to provide a release layer on the surface of the conveyor belt 20 for the purpose of smooth transfer.
  • a primer layer which is an adhesive resin layer is formed thereon by the nozzle head Pr.
  • the inkjet image 14 formed on the blanket 23 is transferred to the can 41, the inkjet image 14 may not be transferred well.
  • the adhesive force of the inkjet image 14 to the can 41 tends to be insufficient particularly in continuous printing at high speed.
  • a part of the inkjet image tends to remain on the blanket. Therefore, it is necessary to sufficiently increase the adhesive force between the inkjet image 14 and the can 41 as compared with normal offset printing. Therefore, in this embodiment, by forming a primer layer, which is an adhesive resin layer, on the inkjet image 14, the adhesive force between the inkjet image 14 and the can 41 is improved and transfer defects are suppressed.
  • the printing unit 11 may be provided with a nozzle bed for forming the primer layer (Pr), and the nozzle for forming the primer layer (Pr) on the downstream side outside the printing unit 11.
  • a bed may be provided, a spray nozzle bed for forming a primer layer (Pr) by spraying on the downstream side outside the printing unit 11 may be provided, and a primer layer coating device such as a die coater on the downstream side outside the printing unit 11 May be provided.
  • the type of the adhesive resin layer is not particularly limited as long as the adhesion between the inkjet image 14 and the can 41 can be improved.
  • the acrylic resin adhesive, the urethane resin adhesive, and the epoxy resin that are usually used as an adhesive are used.
  • the ratio of each resin when used as a blend resin is not particularly limited, and it may be a blend of two types or a blend of three or more types, and it contains other resins as long as it does not hinder its function. May be. Furthermore, a polymerization accelerator or a polymerization initiator may be added.
  • the primer layer may be semi-cured by the above-described curing means. A form in which the inkjet image 14 is completely cured and the primer layer is semi-cured is preferable from the viewpoint of adhesive force. For example, the inkjet image 14 is completely cured by providing a heat source such as a heater inside the conveyance belt, and the primer The layer may be semi-cured.
  • the conveyor belt 20 has an annular shape via a first roller 21 and a second roller 22, and the inkjet image printed on the blanket 23 of the conveyor belt 20 is transferred to the transfer station 30 by circling in the direction of the arrow in the figure. Transport to.
  • the number of blankets 23 of the conveyor belt 20 can be determined as appropriate according to the circumference of the annular conveyor belt and according to the operating speed of the printing system.
  • the conveyance belt 20 may have flexibility, but if the material is excessively flexible, the belt tension becomes insufficient, and deviation may occur during printing or transfer.
  • the material of the conveyor belt 20 is not particularly limited.
  • one or more auxiliary rollers may be provided for the purpose of guiding the conveyance belt.
  • the blanket 23 on which the inkjet image 14 is formed is conveyed to the transfer station 30 along the outer periphery of the first roller 21.
  • a plurality of cans 41 are carried by the mandrel wheel 40 and conveyed to the transfer station 30.
  • the can 41 starts to rotate when the tip of the blanket 23 comes into contact with the conveyed can 41, or the can 41 starts to rotate immediately before the tip of the blanket 23 contacts the can 41.
  • the blanket Inkjet image 14 formed on 23 is transferred in the circumferential direction of can 41, and an inkjet image is formed on the surface of can 41.
  • the blanket 23 and the can 41 may be properly aligned, and the alignment may be performed by a known method.
  • the rotation of the mandrel wheel 40 itself is stopped, and the can 41 of the mandrel 42 is rotated while the mandrel wheel 40 is stopped.
  • the formed inkjet image 14 may be transferred to the can 41.
  • the present embodiment can also be applied to such intermittent printing.
  • the surface of the blanket 23 is preferably cleaned at the cleaning station 50.
  • the inkjet image 14 can suppress transfer failure of the inkjet image 14 to the can 41 due to the presence of the adhesive resin layer formed thereon.
  • a cleaning station 50 may be provided to clean the ink on the blanket 23.
  • the cleaning station 50 typically includes a cleaning agent supply unit 51 that discharges the cleaning agent onto the blanket 23 and a scraper 52 that wipes off residual ink on the blanket 23.
  • the blanket 23 whose surface has been cleaned by the cleaning station 50 is guided by the second roller 22 and conveyed again to the printing station 10, and the inkjet image 14 is formed thereon.
  • the can 41 to which the inkjet image 14 has been transferred is conveyed to the overcoat station 60 by the mandrel wheel 40.
  • the inkjet image 14 transferred onto the surface of the can 41 is coated.
  • Varnish is typically used for coating, but other coatings may be used as long as they can protect the inkjet image and improve durability.
  • the inkjet continuous printing system of the present embodiment enables high-speed printing of inkjet images on the can surface by an inkjet offset printing method. Even in the case of high-speed printing, the adhesive resin layer formed on the ink-jet image promotes the transfer of the ink-jet image to the can surface, so that transfer defects are unlikely to occur.
  • FIG. 2 shows another example of the printing system of this embodiment.
  • the image printing system 200 is an example using a transport cylinder 120 as an image transport unit.
  • the transfer cylinder 120 is typically a metallic cylindrical member.
  • a blanket 123 is provided, and an inkjet image 114 is formed thereon at the printing station 110.
  • the inkjet image 114 may be formed directly on the transport cylinder 120 instead of on the blanket 123. In this case, it is preferable to provide a release layer on the surface of the transport cylinder 120 for the purpose of smooth transfer.
  • the transport cylinder 120 may include a drying means (not shown) inside. Further, a drying means may be provided instead of the UV irradiation unit 113. With the drying means, it is possible to evaporate the solvent of the ink jet image and make it semi-cured. In addition, when a thermosetting resin is used as a binder of an ink for forming an inkjet image, the ink can be semi-cured by heat, and the inkjet image 114 can be easily transferred to the can 141.
  • the ink jet printing can manufactured by the continuous printing system of the present embodiment has an adhesive resin layer between the ink jet image and the can which is a printing object, and the ink jet image is overcoated.
  • the surface of the inkjet print can has high scratch resistance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

La présente invention aborde le problème de résolution d'une défaillance de transfert provoquée lorsqu'une image à jet d'encre est imprimée en continu sur une surface de canette par un procédé d'impression offset d'un système à jet d'encre. Un système d'impression en continu à jet d'encre comprend : un moyen de formation d'image pour former une image à jet d'encre ; un moyen de transport d'image pour transporter l'image à jet d'encre formée vers un moyen de transfert ; le moyen de transfert pour transférer l'image à jet d'encre transportée par le moyen de transport d'image sur une canette ; et un moyen de transport de canette pour transporter la canette, qui est l'objet à imprimer, vers le moyen de transfert. Le système d'impression en continu à jet d'encre résout le problème par formation d'une couche de résine adhésive telle qu'une couche d'apprêt sur l'image à jet d'encre sur le moyen de transport d'image.
PCT/JP2019/022197 2018-06-05 2019-06-04 Système d'impression continue WO2019235482A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018107893A JP2019209612A (ja) 2018-06-05 2018-06-05 連続印刷システム
JP2018-107893 2018-06-05

Publications (1)

Publication Number Publication Date
WO2019235482A1 true WO2019235482A1 (fr) 2019-12-12

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WO (1) WO2019235482A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011500363A (ja) * 2007-10-19 2011-01-06 カーハーエス・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 容器外周表面で、瓶又は同様の容器に印刷するための装置
JP2012086870A (ja) * 2010-10-19 2012-05-10 Toyo Seikan Kaisha Ltd 印刷シームレス缶及びその製造方法
JP2012232771A (ja) * 2011-04-28 2012-11-29 Toyo Seikan Kaisha Ltd インクジェット印刷装置及びこれを用いたシームレス缶の印刷方法
US20160221360A1 (en) * 2013-09-13 2016-08-04 Till Gmbh Printing press for printing three-dimensional objects
JP2017136810A (ja) * 2016-02-01 2017-08-10 株式会社サンリュウ インクジェット用接着インクを用いた転写印刷方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011500363A (ja) * 2007-10-19 2011-01-06 カーハーエス・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 容器外周表面で、瓶又は同様の容器に印刷するための装置
JP2012086870A (ja) * 2010-10-19 2012-05-10 Toyo Seikan Kaisha Ltd 印刷シームレス缶及びその製造方法
JP2012232771A (ja) * 2011-04-28 2012-11-29 Toyo Seikan Kaisha Ltd インクジェット印刷装置及びこれを用いたシームレス缶の印刷方法
US20160221360A1 (en) * 2013-09-13 2016-08-04 Till Gmbh Printing press for printing three-dimensional objects
JP2017136810A (ja) * 2016-02-01 2017-08-10 株式会社サンリュウ インクジェット用接着インクを用いた転写印刷方法

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