JP2010047308A - Metal can body provided with foaming ink printing pattern - Google Patents
Metal can body provided with foaming ink printing pattern Download PDFInfo
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- JP2010047308A JP2010047308A JP2008215986A JP2008215986A JP2010047308A JP 2010047308 A JP2010047308 A JP 2010047308A JP 2008215986 A JP2008215986 A JP 2008215986A JP 2008215986 A JP2008215986 A JP 2008215986A JP 2010047308 A JP2010047308 A JP 2010047308A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 67
- 239000002184 metal Substances 0.000 title claims abstract description 67
- 238000005187 foaming Methods 0.000 title claims abstract description 9
- 238000007639 printing Methods 0.000 title claims description 72
- 239000010410 layer Substances 0.000 claims abstract description 81
- 229920005989 resin Polymers 0.000 claims abstract description 67
- 239000011347 resin Substances 0.000 claims abstract description 67
- 239000007787 solid Substances 0.000 claims abstract description 23
- 239000012790 adhesive layer Substances 0.000 claims abstract description 19
- 239000003094 microcapsule Substances 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 abstract description 12
- 239000010408 film Substances 0.000 description 67
- 239000002966 varnish Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 238000013461 design Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000003854 Surface Print Methods 0.000 description 7
- 238000005034 decoration Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000003086 colorant Substances 0.000 description 6
- -1 polypropylene Polymers 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000007740 vapor deposition Methods 0.000 description 6
- 238000007646 gravure printing Methods 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 238000007645 offset printing Methods 0.000 description 4
- 229920001225 polyester resin Polymers 0.000 description 4
- 239000004645 polyester resin Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000003851 corona treatment Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 239000005029 tin-free steel Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000007429 general method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010887 waste solvent Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
Description
本発明は、金属缶体の缶胴部外面に接着剤層を介して透明樹脂フィルムを設けてなる金属缶体に関する。 The present invention relates to a metal can body in which a transparent resin film is provided on an outer surface of a can body portion of a metal can body via an adhesive layer.
従来、飲料物等の容器に使用される金属缶として、樹脂被覆金属板やアルミニウム合金板等の缶体材料から絞りしごき加工等により形成された一方に開口部を有する有底筒状缶体の前記開口部に別途製造された缶蓋を二重巻締めされてなる所謂２ピース缶などのシームレス缶や、錫系メッキやニッケル系メッキを施した低炭素鋼板シートに内面塗装と外面印刷を実施したのち缶サイズに切断し円筒形にしてから缶胴継ぎ目部を溶接し、底蓋を二重巻締して作製する溶接缶などの３ピース缶が知られている。 Conventionally, as a metal can used for containers such as beverages, a bottomed cylindrical can body having an opening on one side formed by squeezing and ironing from a can body material such as a resin-coated metal plate or an aluminum alloy plate Inner surface painting and outer surface printing are performed on seamless cans such as so-called two-piece cans, which are separately wound can lids that are manufactured separately in the openings, and low-carbon steel sheet sheets that have been plated with tin or nickel. After that, a three-piece can such as a welded can is prepared by cutting a can into a cylindrical shape, welding the can body seam, and double-tightening the bottom lid.
このような金属缶においては、印刷したポリエステルフィルムを缶胴部外面に接着させて意匠性を付与し、金属缶の高級化や差別化を行っている。
また、近年、印刷インキに加熱により発泡する発泡マイクロカプセルを含有させることによって、印刷層に微細な凹凸を形成し、光を乱反射させてマット感を創出させたものが知られている（例えば、特許文献１）。
このような、金属缶の缶胴部外面に施す発泡印刷は、オフセット印刷時、デザインの一部の色インキに発泡マイクロカプセルを配合することで、その部分の立体感やマット感を得るという効果がある。
Further, in recent years, it is known that a printing ink contains foamed microcapsules that foam by heating, thereby forming fine irregularities in the printed layer and diffusely reflecting light to create a matte feeling (for example, Patent Document 1).
Foam printing applied to the outer surface of the can body of such a metal can, when offset printing, by blending foamed microcapsules with part of the color ink of the design, the effect of obtaining the three-dimensional feeling and matte feeling of that part There is.
しかし、特許文献１に記載の金属缶体は、発泡インキを用いた印刷フィルムを缶胴部に接着して立体感を有してはいるが、発泡部分の絵柄と、発泡部分の絵柄が形成されている樹脂フィルムを通して視認できる模様とが重なった奥行き感は付与されていない。
本発明は、かかる事情に鑑みてなされたものであり、シームレス缶の缶胴部外面に立体感や奥行き感を付与し、需要者に注意を喚起せしめることができる金属缶体を提供することを目的とする。
However, although the metal can body described in Patent Document 1 has a three-dimensional effect by adhering a printing film using foamed ink to the can body, a foamed part pattern and a foamed part pattern are formed. A feeling of depth overlapping with a pattern that can be visually recognized through the resin film is not given.
The present invention has been made in view of such circumstances, and provides a metal can body that can give a three-dimensional feeling and a sense of depth to the outer surface of the can body of a seamless can, and can alert a consumer. Objective.
前記目的を達成するために、本発明の金属缶体は以下のように構成される。
（１）金属缶体の缶胴部外面に接着剤層を介して透明樹脂フィルムを設けてなる金属缶体であって、前記接着された透明樹脂フィルムの内面側には第１柄印刷模様が形成され、
外面側には焼付温度より低い殻壁軟化温度を有する熱膨張性マイクロカプセルを含有する発泡インキによる第２柄印刷模様が形成されていることを特徴とする。
（２）前記（１）において、前記透明樹脂フィルムの外面側に形成されている発泡インキによる第２柄印刷模様の上にはさらに透明樹脂層が形成されていることを特徴とする。
（３）前記（１）又は（２）において、前記透明樹脂フィルムの内面側に形成されている第１柄印刷模様の金属缶側にはさらにベタ印刷層が形成されていることを特徴とする。
（４）前記（１）〜（３）のいずれかにおいて、接着剤層は缶胴外面フィルムを介して金属缶体の缶胴金属外面に形成されていることを特徴とする。
（５）前記（１）〜（４）のいずれかにおいて、発泡インキによる第２柄印刷模様が缶胴の周方向に等間隔に複数個配設されていることを特徴とする。
In order to achieve the above object, the metal can of the present invention is configured as follows.
(1) A metal can body in which a transparent resin film is provided on an outer surface of a can body portion of the metal can body through an adhesive layer, and a first pattern printed pattern is formed on the inner surface side of the bonded transparent resin film. Formed,
On the outer surface side, a second pattern printing pattern is formed by foamed ink containing thermally expandable microcapsules having a shell wall softening temperature lower than the baking temperature.
(2) In the above (1), a transparent resin layer is further formed on the second pattern printed pattern by the foamed ink formed on the outer surface side of the transparent resin film.
(3) In the above (1) or (2), a solid printing layer is further formed on the metal can side of the first pattern printing pattern formed on the inner surface side of the transparent resin film. .
(4) In any one of the above (1) to (3), the adhesive layer is formed on the outer surface of the can body metal of the metal can body through the can body outer surface film.
(5) In any one of the above (1) to (4), a plurality of second pattern printing patterns with foamed ink are arranged at equal intervals in the circumferential direction of the can body.
本発明の金属缶体は、金属缶の缶胴部外面に立体感や奥行き感を付与することができ、需要者に注意を喚起せしめることができる。特に金属缶がシームレス缶の場合に好適である。 The metal can body of the present invention can give a three-dimensional effect and a sense of depth to the outer surface of the can body part of the metal can, and can call attention to the consumer. It is particularly suitable when the metal can is a seamless can.
次に、図面を参照しながら本発明の実施形態に係る金属缶体について詳しく説明する。
図１は、本発明に係る一実施形態の金属缶体外観を示す斜視図であり、図２は、図１に示す金属缶体の缶胴部の積層構成を示す断面図である。
Next, the metal can body according to the embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an appearance of a metal can body according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a laminated structure of a can body portion of the metal can body shown in FIG.
図１、図２に示すように、本実施形態の金属缶体１０は、シームレス缶の缶体を製造するために用いられる有底筒状缶体であり、缶体材料から絞りしごき（ＤＩ）加工などの加工手段により形成された一方に開口部を有する有底筒状の缶胴部１１の外面に、透明樹脂フィルム１６が接着剤層１３を介して設けられている。
この透明樹脂フィルム１６には、缶胴部１１側において、装飾模様（第１柄印刷模様）１５が形成され、さらにその上には場合によってはベタ印刷層１４が形成されている。
そして、透明樹脂フィルム１６の缶胴部１１側と反対側（缶胴部の外面方向）において、
熱膨張性マイクロカプセルを含有する発泡インキによる第２柄印刷模様１７が形成されている。
また、缶胴部１１の外面は、その表面が缶胴外面フィルムで被覆されている場合もある。缶胴外面フィルムで被覆されている場合、缶胴外面フィルム１１ｂの上には、順次、接着剤層１３、ベタ印刷層１４、装飾模様（第１柄印刷模様）１５、透明樹脂フィルム１６、発泡インキ層（第２柄印刷模様）１７、仕上げニス層（透明樹脂層）１８、が形成されている。
As shown in FIGS. 1 and 2, the metal can body 10 of the present embodiment is a bottomed cylindrical can body used for manufacturing a seamless can body, and squeezes and squeezes (DI) from the can body material. A transparent resin film 16 is provided on the outer surface of the bottomed cylindrical can body 11 having an opening on one side formed by a processing means such as processing via an adhesive layer 13.
A decorative pattern (first pattern printing pattern) 15 is formed on the transparent resin film 16 on the can body 11 side, and a solid printing layer 14 is further formed on the decorative pattern 15 according to circumstances.
And on the side opposite to the can body 11 side of the transparent resin film 16 (outer surface direction of the can body),
The 2nd pattern printing pattern 17 by the foaming ink containing a thermally expansible microcapsule is formed.
Moreover, the outer surface of the can body part 11 may be coat | covered with the can body outer surface film. When covered with a can body outer surface film, an adhesive layer 13, a solid print layer 14, a decorative pattern (first pattern print pattern) 15, a transparent resin film 16 and a foam are sequentially formed on the can body outer surface film 11b. An ink layer (second pattern printing pattern) 17 and a finishing varnish layer (transparent resin layer) 18 are formed.
次に、本実施形態の金属缶体１０の缶胴部１１上へ積層される材料構成について以下に説明する。
（１）缶胴部の基体材料
缶胴部１１を構成する基体である缶胴金属１１ａ材料としては、各種表面処理鋼板やアルミニウムなどの軽金属板等を用いることができる。
表面処理鋼板としては、ＴＦＳ（ティンフリースチール）などのクロム酸処理鋼板、アルミメッキ鋼板、亜鉛メッキ鋼板、錫メッキ鋼板、ニッケルメッキ鋼板などを用いることができる。必要に応じてリン酸塩処理やクロメート処理などの表面処理を行ったものを用いることができる。
軽金属板としては、アルミニウム板やアルミニウム合金板を用いることができ、更に、ジルコニウムやチタンの酸化物を主成分とする化成皮膜或いはポリアクリル酸−ジルコニウム塩の複合皮膜などにより表面処理されていてもよい。
Next, the material structure laminated | stacked on the can trunk | drum 11 of the metal can 10 of this embodiment is demonstrated below.
(1) Base material of can body part As a material of the can body metal 11a which is a base body constituting the can body part 11, various surface-treated steel plates, light metal plates such as aluminum, and the like can be used.
As the surface-treated steel sheet, a chromic acid-treated steel sheet such as TFS (tin-free steel), an aluminum-plated steel sheet, a galvanized steel sheet, a tin-plated steel sheet, a nickel-plated steel sheet, or the like can be used. If necessary, a surface treatment such as phosphate treatment or chromate treatment can be used.
As the light metal plate, an aluminum plate or an aluminum alloy plate can be used, and even if it is surface-treated with a chemical conversion film mainly composed of an oxide of zirconium or titanium or a composite film of polyacrylic acid-zirconium salt. Good.
（２）缶胴外面フィルム
また、缶胴部１１としては、上記の表面処理鋼板や金属板の表面に缶胴外面フィルム１１ｂが積層されたものを使用することもできる。
缶胴外面フィルム１１ｂとしての樹脂フィルムは、金属缶体１０が、樹脂被覆金属板を加工して作成される樹脂被覆シームレス缶体である場合に設けられるものであり、これを設けることにより容器製造中における廃棄溶剤の低減や使用水量低減の効果がある。
一般に、缶胴外面フィルム１１ｂとして、スチール缶においては酸化チタンなどの白色顔料入りポリエステル樹脂フィルムが使用され、アルミ缶においては透明ポリエステル樹脂フィルムが使用される。
積層する樹脂としては、ポリエステルフィルム、ナイロンフィルム、ポリプロピレンフィルムなど、比較的透明性が高くて加工性及び耐熱性に優れた熱可塑性フィルムが使用される。
積層方法としては、Ｔダイからの直接コート、Ｔダイから一旦無延伸フィルムにしてから熱ラミネートする方法、二軸延伸フィルムを熱ラミネートする方法などの一般的な方法で作成される。
この樹脂フィルムは、缶胴部の外面側だけでなく、内面側に設けることもできる。
なお、あらかじめ樹脂被覆されていない金属板から成形されるシームレス缶体の場合や、溶接缶の場合には、この缶胴外面フィルムは積層されていない。
(2) Can body outer surface film Moreover, as the can body part 11, what laminated | stacked the can body outer surface film 11b on the surface of said surface-treated steel plate or a metal plate can also be used.
The resin film as the can body outer surface film 11b is provided when the metal can body 10 is a resin-coated seamless can body formed by processing a resin-coated metal plate. This has the effect of reducing waste solvent and reducing the amount of water used.
Generally, as the can body outer surface film 11b, a polyester resin film containing a white pigment such as titanium oxide is used in a steel can, and a transparent polyester resin film is used in an aluminum can.
As the resin to be laminated, a thermoplastic film having relatively high transparency and excellent workability and heat resistance, such as a polyester film, a nylon film, and a polypropylene film, is used.
As a lamination method, it is prepared by a general method such as direct coating from a T die, a method in which a T die is once made into an unstretched film and then heat-laminated, and a method in which a biaxially stretched film is heat-laminated.
This resin film can be provided not only on the outer surface side of the can body portion but also on the inner surface side.
In the case of a seamless can formed from a metal plate not previously coated with a resin, or in the case of a welded can, this can body outer surface film is not laminated.
（３）接着剤層
缶胴部１１表面に印刷ラベル２０を積層する場合にその接着力を増加させるために、缶胴外面フィルム１１ｂの上に接着剤層１３が設けられている。
接着剤層１３の種類としては、缶胴外面フィルム１１ｂとベタ印刷層１４との接合性が良好な熱硬化型のものが挙げられ、ポリウレタン系、ポリエステル系、ポリエステルポリウレタン系、エポキシ系などの熱硬化性接着剤が好ましく適用される。
また、ポリエステル系樹脂、エチレン酢酸ビニル共重合体（ＥＶＡ）やエチレンメタクリレート共重合体（ＥＭＭＡ）などの熱可塑性樹脂を使用することも可能である。
レトルト処理される容器の場合には、熱可塑性樹脂の融点はレトルト処理温度以上であることが好ましい。
接着剤に使用される溶剤は特に限定されるものではないが、塗料又は接着剤に通常用いられている酢酸エチル、酢酸ブチルなどのエステル系溶剤、アセトン、メチルエチルケトン、メチルイソブチルケトン、シクロヘキサノンなどのケトン系溶剤、トルエン、キシレンなどの芳香族炭化水素類が挙げられる。
なお、接着剤層１３は、接着強度などの観点から一般に１〜６μｍの厚みで、缶胴外面フィルム１１ｂの表面に塗布されるか、後述する印刷ラベル２０のベタ印刷層１４表面に塗布され、形成される。ベタ印刷層１４を設けない場合は、印刷ラベル２０の印刷面に塗布される。
(3) Adhesive layer In order to increase the adhesive force when the printing label 20 is laminated on the surface of the can body part 11, the adhesive layer 13 is provided on the can body outer surface film 11b.
Examples of the type of the adhesive layer 13 include a thermosetting type in which the bonding property between the outer surface 11b of the can body and the solid printing layer 14 is good, and heat such as polyurethane, polyester, polyester polyurethane, and epoxy can be used. A curable adhesive is preferably applied.
Moreover, it is also possible to use thermoplastic resins, such as a polyester-type resin, an ethylene vinyl acetate copolymer (EVA), and an ethylene methacrylate copolymer (EMMA).
In the case of a container to be retorted, the melting point of the thermoplastic resin is preferably equal to or higher than the retorting temperature.
The solvent used for the adhesive is not particularly limited, but ester solvents such as ethyl acetate and butyl acetate that are usually used for paints or adhesives, and ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone. Aromatic hydrocarbons such as system solvents, toluene, and xylene.
The adhesive layer 13 is generally applied to the surface of the can body outer surface film 11b with a thickness of 1 to 6 μm from the viewpoint of adhesive strength or the like, or is applied to the surface of the solid print layer 14 of the print label 20 described later, It is formed. When the solid printing layer 14 is not provided, it is applied to the printing surface of the printing label 20.
（４）ベタ印刷層
後述する装飾模様１５の下地としてベタ印刷層１４を形成することができる。ベタ印刷層１４は、装飾模様１５や発泡インキ層（第２柄印刷模様）１７を鮮やかに見せる効果がある。ベタ印刷層１４としては、装飾模様１５や発泡インキ層（第２柄印刷模様）１７のデザインにあわせて、白インキ層、金色インキ層、銀色インキ層などの色調を配設することができる。それらのなかでも、装飾模様１５や発泡インキ層（第２柄印刷模様）１７のデザインを鮮やかにする効果の大きい下地としては、白インキ層が好ましい。白インキ層としては、公知の白インキを使用でき、酸化チタン顔料をビヒクルに分散させたものが好ましく使用できる。また、デザインによってはベタ印刷層１４を設けずに、缶胴の金属色をデザインとして利用することもできる。
(4) Solid print layer The solid print layer 14 can be formed as a base of a decorative pattern 15 described later. The solid print layer 14 has an effect of making the decorative pattern 15 and the foamed ink layer (second pattern print pattern) 17 appear vividly. As the solid print layer 14, colors such as a white ink layer, a gold ink layer, and a silver ink layer can be arranged in accordance with the design of the decorative pattern 15 and the foamed ink layer (second pattern print pattern) 17. Among them, a white ink layer is preferable as a base having a large effect of making the design of the decorative pattern 15 and the foamed ink layer (second pattern printed pattern) 17 vivid. As the white ink layer, a known white ink can be used, and a titanium oxide pigment dispersed in a vehicle can be preferably used. Further, depending on the design, the metal color of the can body can be used as a design without providing the solid print layer 14.
上記のベタ印刷層１４の代わりに、金属箔あるいは金属蒸着層を設けてもよい。
金属箔としては、アルミ箔、銅、銀、亜鉛、ニッケルなどの単体又は合金を薄膜化したものが挙げられる。金属箔の厚みは、３〜２０μｍ程度が使用される。
また、金属蒸着層に用いられる金属としては、アルミニウム、銅、クロム、銀などが挙げられるが、中でもシルバー調の金属色を有しかつ鏡面光沢が優れるという加飾効果を有し、かつコストと汎用性の点からアルミニウムが好ましく用いられる。金属蒸着層は、真空蒸着法などの常法により蒸着して得ることができ、２００〜８００Åの厚みであることが好ましい。
Instead of the solid printing layer 14 described above, a metal foil or a metal vapor deposition layer may be provided.
Examples of the metal foil include aluminum foil, a simple substance such as copper, silver, zinc, nickel, or an alloy made of a thin film. About 3-20 micrometers is used for the thickness of metal foil.
In addition, examples of the metal used for the metal vapor deposition layer include aluminum, copper, chromium, silver, etc., among others, it has a decorative effect of having a silver-like metal color and excellent specular gloss, and cost. Aluminum is preferably used from the viewpoint of versatility. A metal vapor deposition layer can be obtained by vapor deposition by conventional methods, such as a vacuum vapor deposition method, and it is preferable that it is the thickness of 200-800 mm.
（５）透明樹脂フィルム
ベタ印刷層１４の缶胴部外方には、透明樹脂フィルム１６が設けられている。
透明樹脂フィルム１６は、前記の装飾模様（第１柄印刷模様）１５及びベタ印刷層１４を設ける基体としての役割があり、長尺の透明樹脂フィルム１６に、装飾模様１５及びベタ印刷層１４の印刷層を設けて長尺の印刷ラベル２０にする。長尺の印刷ラベル２０はベタ印刷層１４側に接着剤を塗布されたのち、１缶毎のサイズに切断されて缶胴に被覆される。透明樹脂フィルム１６としては、ポリエステルフィルム、ナイロンフィルム、ポリプロピレンフィルムなどの、比較的透明性が高くて耐熱性に優れた熱可塑性樹脂フィルムが挙げられ、無延伸フィルムや一軸延伸フィルムも使用することができるが、強度に優れているため二軸延伸フィルムが好ましい。
また、透明樹脂フィルム１６には、フィルム用配合剤、例えば非晶質シリカなどのアンチブロッキング剤、各種帯電防止剤、滑剤、酸化防止剤、紫外線吸収剤などを公知の処方に従って配合することができる。
なお、透明樹脂フィルム１６には、コロナ処理やプラズマ処理や火炎処理などの公知の接着性向上表面処理を使用することができる。
上記の透明樹脂フィルム１６の厚みとしては、５〜３０μｍ、中でも１０〜２０μｍ程度のものが好ましく用いられる。
(5) Transparent resin film A transparent resin film 16 is provided outside the can body of the solid print layer 14.
The transparent resin film 16 has a role as a base on which the decorative pattern (first pattern printed pattern) 15 and the solid printed layer 14 are provided, and the long transparent resin film 16 has the decorative pattern 15 and the solid printed layer 14 formed thereon. A printing layer is provided to form a long printed label 20. After the long printed label 20 is coated with an adhesive on the side of the solid print layer 14, it is cut into a size for each can and covered on the can body. Examples of the transparent resin film 16 include thermoplastic film having relatively high transparency and excellent heat resistance, such as polyester film, nylon film, and polypropylene film, and unstretched film and uniaxially stretched film may also be used. However, since it is excellent in strength, a biaxially stretched film is preferable.
The transparent resin film 16 can be blended with a film compounding agent, for example, an antiblocking agent such as amorphous silica, various antistatic agents, lubricants, antioxidants, ultraviolet absorbers, and the like according to known formulations. .
For the transparent resin film 16, a known adhesion improving surface treatment such as corona treatment, plasma treatment or flame treatment can be used.
The thickness of the transparent resin film 16 is preferably 5 to 30 μm, and more preferably about 10 to 20 μm.
透明樹脂フィルム１６には、その片面（缶胴部側方向の面）に第１柄印刷模様である装飾模様１５が形成されている。
装飾模様１５としては、例えばデザインや商品名などの印刷模様が挙げられる。
装飾模様１５の形成方法としては、印刷ローラーを用いて或いはグラビア法などの適宜な印刷手段を使って、単色或いは複数色（例えば、２〜１０色）の色インキにより、複数色の場合は順次繰り返して、印刷を行うことなどが挙げられる。
The transparent resin film 16 is provided with a decorative pattern 15 which is a first pattern printing pattern on one side (surface in the can body side direction).
Examples of the decorative pattern 15 include a printed pattern such as a design and a product name.
As a method of forming the decorative pattern 15, using a printing roller or an appropriate printing means such as a gravure method, a single color or a plurality of colors (for example, 2 to 10 colors) of color ink, and in the case of a plurality of colors, sequentially. For example, printing may be repeated.
色インキとしては、熱硬化性のポリウレタン系樹脂からなるインキを使用することが好ましく、その印刷方法としては、上記のグラビア印刷のほか、フレキソ印刷やオフセット印刷などの各種の印刷方法も適宜選択可能であり、焼付け方法としては熱硬化焼付けやＵＶ硬化焼付け法などの一般的方法が用いられる。
色数を豊富に使って色調豊かで美麗な文字や模様を印刷するには、グラビア印刷により印刷層を形成することが好ましい。
なお、本実施の形態では、上記透明樹脂フィルム１６の表面に装飾模様１５及びベタ印刷層１４を印刷したものを印刷ラベル２０という。
また、装飾模様１５の表面にホログラム形成層を作製し、ホログラム形成層表面の凹凸面に金属蒸着膜を形成して印刷ラベル２０にすると、本願の発泡インキ層とホログラム加飾の相乗効果によりインパクトの強い加飾が得られる。このとき、金属蒸着層を形成したホログラム形成層は印刷フィルムと別フィルムにして接着剤を介してラミネートされた多層フィルムを印刷ラベル２０にしてもよい。ホログラム形成層は、ホログラムフィルムをラミネートすることや、樹脂層にホログラムパターンを転写するなどして作製することができる。
As the color ink, it is preferable to use an ink made of a thermosetting polyurethane resin. As the printing method, in addition to the above gravure printing, various printing methods such as flexographic printing and offset printing can be appropriately selected. As a baking method, a general method such as thermosetting baking or UV curing baking is used.
In order to print beautiful characters and patterns with rich colors using a large number of colors, it is preferable to form a printing layer by gravure printing.
In the present embodiment, a print label 20 is a print of the decorative pattern 15 and the solid print layer 14 on the surface of the transparent resin film 16.
Further, when a hologram forming layer is formed on the surface of the decorative pattern 15 and a metal vapor deposition film is formed on the uneven surface of the hologram forming layer surface to form the printed label 20, an impact is achieved by the synergistic effect of the foamed ink layer of the present application and the hologram decoration. Strong decoration. At this time, the hologram forming layer on which the metal vapor-deposited layer is formed may be used as the printed label 20 by forming a multilayer film laminated with an adhesive by separating the printed film from the printed film. The hologram forming layer can be produced by laminating a hologram film or transferring a hologram pattern to a resin layer.
（６）発泡インキ層
印刷ラベル２０の、その外面（装飾模様１５が形成されている側とは反対面）に第２柄印刷模様である発泡インキ層１７が形成されている。
発泡インキ層１７としては、例えばデザインや商品名などの印刷模様が挙げられる。
発泡インキ層１７は、シームレス缶の場合は、公知の曲面印刷機にて、樹脂凸版あるいは水なし平版を用いて、オフセット印刷で形成することができる。一方で３ピース缶の場合は、金属板外面側にオフセット印刷でのシート印刷で形成することができる。
発泡剤である熱膨張性マイクロカプセルは、イソブタン・ヘキサン・ヘプタン等の揮発性溶剤を熱可塑性樹脂である塩化ビニリデンやアクリルニトリルなどの共重合体などの殻壁でくるんだものが好ましく、殻壁軟化温度が１００〜２００℃の範囲にあることが好ましい。
発泡剤は、印刷インキに所定量配合され分散して発泡インキとなり、缶胴外面に印刷され、その後に塗布される仕上げニスとともに加熱焼付けされる。この加熱により、熱膨張性マイクロカプセルの殻壁は軟化し、かつ殻壁内の揮発性溶剤が気化・熱膨張するため、熱膨張性マイクロカプセルが膨張する。加熱焼付けにより熱膨張性マイクロカプセルは直径で３〜６倍に膨張する。このように膨張したマイクロカプセルは加熱焼付け後の冷却により、膨張したままの球形で固化したり、揮発性溶剤が抜けて潰れた形態で固化したりするため、この部分の凹凸が大きくなる。この凹凸は仕上げニスを設けた後ではやや小さくなるものの、大きいままで維持される。熱膨張性マイクロカプセルの殻壁軟化温度は、加熱焼付け温度よりも低いことが好ましい。
焼付け前の発泡インキに含まれる熱膨張性マイクロカプセルの大きさは直径が１〜３０μｍ、配合量は３質量％以下特に０．５〜１．５質量％の範囲にあることが好ましい。焼付け処理での発泡後に好適な凹凸を得る為には、焼き付けを１７０〜２３０℃で行うことが望ましい。仕上げニスをかけた後の表面粗度はＪＩＳ Ｂ０６０１に基づく触針式粗さ形状測定器で測定した算術平均粗さＲａで０．５〜３μｍの範囲にあることが好ましい。この範囲の下限を下回ると凹凸感不足となる可能性があり、上限を上回ると生産性、耐キズ付き性が劣る可能性がある。
(6) The foamed ink layer printed label 20 is formed with a foamed ink layer 17 that is the second pattern printed pattern on the outer surface (the surface opposite to the side on which the decorative pattern 15 is formed).
Examples of the foamed ink layer 17 include printed patterns such as designs and product names.
In the case of a seamless can, the foamed ink layer 17 can be formed by offset printing using a resin relief plate or a waterless lithographic plate using a known curved surface printing machine. On the other hand, in the case of a three-piece can, it can be formed by sheet printing by offset printing on the outer surface side of the metal plate.
The thermally expandable microcapsule that is a foaming agent is preferably a volatile solvent such as isobutane, hexane, or heptane that is wrapped with a thermoplastic resin such as vinylidene chloride or a copolymer such as acrylonitrile. The softening temperature is preferably in the range of 100 to 200 ° C.
A predetermined amount of the foaming agent is blended and dispersed in the printing ink to form the foamed ink, printed on the outer surface of the can body, and then heated and baked together with the finishing varnish applied. By this heating, the shell wall of the thermally expandable microcapsule is softened, and the volatile solvent in the shell wall is vaporized and thermally expanded, so that the thermally expandable microcapsule expands. Thermally expandable microcapsules expand 3 to 6 times in diameter by heat baking. The microcapsules expanded in this way are solidified in the expanded spherical shape by cooling after baking, or are solidified in a crushed form through the removal of the volatile solvent, so that the unevenness of this portion becomes large. Although the unevenness is slightly reduced after the finishing varnish is provided, it remains large. The shell wall softening temperature of the thermally expandable microcapsule is preferably lower than the baking temperature.
The size of the heat-expandable microcapsule contained in the foamed ink before baking is preferably 1 to 30 μm in diameter and 3% by mass or less, particularly 0.5 to 1.5% by mass. In order to obtain suitable irregularities after foaming in the baking treatment, baking is preferably performed at 170 to 230 ° C. The surface roughness after applying the finishing varnish is preferably in the range of 0.5 to 3 μm in terms of arithmetic average roughness Ra measured with a stylus type roughness profile measuring instrument based on JIS B0601. If the lower limit of this range is not reached, the unevenness may be insufficient, and if it exceeds the upper limit, productivity and scratch resistance may be inferior.
（７）仕上げニス層（透明樹脂層）
発泡インキ層１７を形成したシームレス缶の外側表面に潤滑性をもたらすため、或いは、発泡インキ層１７の保護のために、シームレス缶の外側表面全体に透明樹脂層である仕上げニス層１８が形成されている。
仕上げニス層１８としては、潤滑剤を含有させた透明熱硬化性樹脂を用いることが好ましく、ポリエステル樹脂、ポリアクリル樹脂、エポキシ樹脂などを基本とし、これにメラミン樹脂などのアミノ樹脂或いはフェノール樹脂などを硬化剤として加え、更に、パラフィン、ポリエチレン、シリコンなどの潤滑剤を０．１〜３質量％配合させたものが使用される。仕上げニス層１８の厚みとしては、０．１〜１０μｍ、好ましくは０．５〜５μｍが好適である。
なお、仕上げニス層１８を形成したシームレス缶体には焼付け処理が施される。焼付け処理とは、接着剤を硬化させシームレス缶体と完全に接着させるため、並びに、仕上げニス層１８を、その層中に含まれる溶剤を除去し、乾燥と硬化をさせるため、及び発泡インキ中の熱膨張性マイクロカプセルを膨張させるために行う処理であり、一般に１７０〜２３０℃で、およそ０．５〜２分間加熱することが好ましい。
(7) Finish varnish layer (transparent resin layer)
In order to provide lubricity to the outer surface of the seamless can on which the foamed ink layer 17 is formed, or to protect the foamed ink layer 17, a finished varnish layer 18 that is a transparent resin layer is formed on the entire outer surface of the seamless can. ing.
As the finishing varnish layer 18, it is preferable to use a transparent thermosetting resin containing a lubricant, which is basically a polyester resin, a polyacrylic resin, an epoxy resin or the like, and an amino resin such as a melamine resin or a phenol resin. Is added as a curing agent, and further, 0.1 to 3% by mass of a lubricant such as paraffin, polyethylene or silicon is used. The thickness of the finishing varnish layer 18 is 0.1 to 10 μm, preferably 0.5 to 5 μm.
The seamless can body on which the finish varnish layer 18 is formed is subjected to a baking process. The baking process is for curing the adhesive and completely adhering it to the seamless can body, and for removing the solvent contained in the finished varnish layer 18 to dry and cure, and in the foamed ink. It is preferable to heat at about 170 to 230 ° C. for about 0.5 to 2 minutes.
＜シームレス缶体の製造方法＞
次に、上記の缶胴部構成を備えたシームレス缶体の製造方法について説明する。
（１）印刷ラベルの製造
まず、缶胴部表面に積層する印刷ラベル２０の製造について説明する。
予めコイル巻きした状態の製品として用意された長尺の透明樹脂フィルム１６を基材として、この長尺透明樹脂フィルム１６を巻き戻し走行させながら、透明樹脂フィルム１６の片面にグラビア印刷などの印刷法にて装飾模様１５を印刷する。
<Method for producing seamless can body>
Next, the manufacturing method of the seamless can body provided with said can body part structure is demonstrated.
(1) Production of printed label First, production of the printed label 20 laminated on the surface of the can body part will be described.
A printing method such as gravure printing on one side of the transparent resin film 16 while using the long transparent resin film 16 prepared as a coiled product in advance as a base material while rewinding and running the long transparent resin film 16 The decorative pattern 15 is printed at.
次に、装飾模様１５を印刷した透明樹脂フィルム１６表面に、ベタ印刷層１４をグラビア印刷又はロールコートにて印刷して印刷ラベル２０を作製する。
その後、印刷ラベル２０のベタ印刷層１４の上に、接着剤層１３をロールコーターで塗布する。
なお、上記のように作製された接着剤層のついた印刷ラベル２０は、長尺フィルムの幅方向に亘って一条（１個の缶体分のサイズ）で形成されているものであってもよく、複数条（複数個の缶体分のサイズ）となるように施されているものでもよい。
Next, on the surface of the transparent resin film 16 on which the decorative pattern 15 is printed, the solid print layer 14 is printed by gravure printing or roll coating to produce a printed label 20.
Thereafter, the adhesive layer 13 is applied on the solid print layer 14 of the print label 20 with a roll coater.
In addition, even if the printed label 20 with the adhesive layer produced as mentioned above is formed in one line (size of one can body) over the width direction of a long film. The thing given so that it may become a plurality of articles (size for a plurality of cans) may be sufficient.
（２）印刷ラベル被覆シームレスカップの製造
上記のように作製された接着剤層のついた長尺印刷ラベル２０を、その横幅が缶胴の周長よりもやや長い寸法に切断して、一缶ごとの縦横サイズの缶用印刷ラベル２０を作成する。
次いで、予め製造されたシームレス缶の缶胴部１１を加熱し、缶胴部１１に上記缶用印刷ラベル２０を巻き回して缶胴部１１の外周面に被覆する。
このとき、缶用印刷ラベル２０の周長方向の両端部双方を重ね合わせてオーバーラップ部となるように積層して、ロールで押圧する。
(2) Manufacture of printed label-coated seamless cup A can of the long printed label 20 with the adhesive layer produced as described above is cut into a dimension whose width is slightly longer than the circumference of the can body. The printing label 20 for cans of vertical and horizontal sizes for each is prepared.
Next, the can body 11 of the seamless can manufactured in advance is heated, and the printed label 20 for cans is wound around the can body 11 to cover the outer peripheral surface of the can body 11.
At this time, both end portions in the circumferential direction of the printed label 20 for cans are overlapped and stacked to form an overlap portion, and pressed with a roll.
その際の缶用印刷ラベル２０を缶胴部１１に被覆する条件として、速度は１０〜３００ｍ／分、缶胴温度は１４０℃〜２００℃、加圧ロールによる圧力は線圧として２５０〜７５０Ｎ／ｃｍとする。
より好ましい条件として、速度については、生産性を上げることから、１５０ｍ／分以上とするのが効果的であり、また、貼り合わせ時の缶胴温度については、接着剤の熱硬化温度や溶融粘度にもよるが、印刷層を保護する観点から１５０〜１９０℃とする。
また、圧力については、接着性に対してはより高い方が有効であるが、寸法の安定性を考慮すると、５００Ｎ／ｃｍ前後が好適である。
The conditions for coating the can printing label 20 on the can body 11 at that time are as follows: the speed is 10 to 300 m / min, the can body temperature is 140 ° C. to 200 ° C., and the pressure by the pressure roll is 250 to 750 N / min. cm.
As a more preferable condition, it is effective to set the speed to 150 m / min or more in order to increase productivity, and the can barrel temperature at the time of bonding is the thermosetting temperature or melt viscosity of the adhesive. Although it depends, it is set to 150-190 degreeC from a viewpoint of protecting a printing layer.
As for the pressure, a higher one is more effective for the adhesiveness, but considering the dimensional stability, about 500 N / cm is preferable.
（３）発泡インキ印刷シームレス缶の製造
本願の発泡インキ印刷シームレス缶の製造に用いられる曲面印刷機は、公知の曲面印刷機を使用することができる。第２柄印刷模様１７をこのように曲面印刷で実施することにより、第１柄印刷模様１５と第２柄印刷模様が缶周方向にランダムな位置関係になるため、缶毎に微妙に違った加飾となり、好ましい効果が得られる。
上記のように缶胴部１１表面に被覆された印刷ラベル２０の表面に、発泡インキ層１７及び仕上げニス層１８が塗布形成された金属缶体は、焼付けオーブンに投入され、発泡インキ層１７の発泡、仕上げニス層１８、接着剤層１３の焼付け硬化等が行われる。
なお、発泡インキを透明とすることで、印刷ラベル２０の光輝感を損なうことなく部分的に凹凸を施すことも可能となる。
また、発泡インキに色インキを配合して発泡インキ層を着色することも可能であり、１色のみならず色を分けて２〜８色の多色印刷にすることも可能である。さらに、発泡インキ層を１〜３回重ね刷りすることで、立体感、独特のマット感を付与することもできる。
(3) Manufacture of foamed ink printing seamless can The curved surface printing machine used for manufacture of the foamed ink printing seamless can of this application can use a well-known curved surface printing machine. By carrying out the second pattern printing pattern 17 by curved surface printing in this way, the first pattern printing pattern 15 and the second pattern printing pattern are in a random positional relationship in the circumferential direction of the can. It becomes decoration and a favorable effect is acquired.
The metal can body in which the foamed ink layer 17 and the finish varnish layer 18 are applied and formed on the surface of the printing label 20 coated on the surface of the can body 11 as described above is put into a baking oven, and the foamed ink layer 17 Foaming, finishing varnish layer 18 and adhesive layer 13 are baked and cured.
In addition, by making foamed ink transparent, it becomes possible to give unevenness | corrugation partially, without impairing the glitter of the printing label 20. FIG.
Moreover, it is also possible to mix | blend a color ink with foaming ink and to color a foamed ink layer, and it is also possible to divide not only one color but to make 2-8 multicolor printing. Furthermore, a three-dimensional feeling and a peculiar mat feeling can be provided by overprinting the foamed ink layer 1 to 3 times.
（第２柄印刷模様図形の周方向への等間隔配設）
第２柄印刷模様１７の所定の図形を、缶胴外面周方向に等間隔に配置することにより、第１柄印刷模様１５と第２柄印刷模様１７が缶周方向にランダムに配置された場合であっても、第１柄印刷模様１５の特定部分に第２柄印刷模様１７の特定部分が重なって配置されるという危険性がなく、両者のデザイン間に違和感がなくなり、好ましい加飾効果を得ることができる。
また、発泡インキ図形が透明であった場合には、発泡インキ図形は「隠し柄模様」となり、缶体正面からは見えないが缶体を傾ければ発泡インキ図形が浮き出たようになり、発見の驚きが感じられるという、新鮮な加飾効果が得られる。
上記発泡インキ層１７で形成する第２柄印刷模様として、所定の図形を缶胴部周方向に等間隔に複数個配設する場合は、以下のようにすることができる。
すなわち、図３、図４に示すように、第２柄印刷模様の図形を形成する刷版である樹脂基板（樹脂凸版）において、樹脂凸版の印刷可能範囲部（凸部）とデザイン可能範囲部（凸部）の寸法差を、刷り始め側においてａ１とし、刷り終わり側においてａ２とし、缶胴部への印刷オーバーラップ幅をｂ（図４では印刷オーバーラップ幅２ｍｍ）とすると、
隣接する図形（星）間に形成される無印刷部の距離Ｘは、Ｘ≧（ａ１＋ａ２−ｂ）となるように、樹脂基板を作成し、例えば図３に示すように、この樹脂基板を２枚、プレートシリンダにセットして、印刷ラベル被覆シームレス缶の表面に発泡インキで第２柄印刷模様１７を曲面印刷する。曲面印刷機によってはプレートシリンダへのセットは樹脂基板１枚であってもよい。
(Equal spacing in the circumferential direction of the second pattern printed pattern)
When the predetermined pattern of the second pattern print pattern 17 is arranged at equal intervals in the circumferential direction of the outer surface of the can body, the first pattern print pattern 15 and the second pattern print pattern 17 are randomly arranged in the circumferential direction of the can Even so, there is no risk that the specific part of the second pattern printed pattern 17 overlaps the specific part of the first pattern printed pattern 15, and there is no sense of incongruity between the two designs, and a favorable decoration effect is achieved. Obtainable.
In addition, when the foamed ink figure is transparent, the foamed ink figure becomes a “hidden pattern”, and it is not visible from the front of the can body, but if the can body is tilted, the foamed ink figure appears to be raised. You can get a fresh decoration effect.
When a plurality of predetermined figures are arranged at equal intervals in the circumferential direction of the can body portion as the second pattern printing pattern formed by the foamed ink layer 17, the following can be performed.
That is, as shown in FIGS. 3 and 4, in a resin substrate (resin relief plate) that is a printing plate for forming a graphic of the second pattern printing pattern, a printable range portion (convex portion) and a designable range portion of the resin relief plate When the dimensional difference of (convex part) is a1 on the printing start side, a2 on the printing end side, and the print overlap width to the can body part is b (print overlap width 2 mm in FIG. 4),
A resin substrate is prepared so that the distance X between the non-printed portions formed between adjacent figures (stars) is X ≧ (a1 + a2−b). For example, as shown in FIG. Sheets and plate cylinders are set, and the second pattern printing pattern 17 is printed on the surface of the printed label-coated seamless can with a foamed ink. Depending on the curved surface printing machine, a single resin substrate may be set on the plate cylinder.
刷版の印刷可能範囲部（凸部）の刷り始め側寸法ａ１、および及び刷り終わり側寸法ａ２は、オーバーラップ幅とデザイン寸法から決定される値である。例えばオーバーラップ幅ｂを２ｍｍ、刷り始め側寸法ａ１と刷り終わり側寸法ａ２を４ｍｍに設定し、樹脂基板において上記のような寸法関係とすることにより、第２柄印刷模様の図形（図４では星の図形で示す）の間を６ｍｍ以上開けることで、印刷のオーバーラップ部の図形間隔を第２柄印刷模様の図形の間隔と同一にすることができる。
一方、第２柄印刷模様の図形の間を６ｍｍ未満の値とするとオーバーラップ幅ｂが６ｍｍであるから、図形間距離は相対的に狭く見えてしまう。
The printing start side dimension a1 and the printing end side dimension a2 of the printable range part (convex part) of the printing plate are values determined from the overlap width and the design dimension. For example, when the overlap width b is set to 2 mm, the printing start side dimension a1 and the printing end side dimension a2 are set to 4 mm, and the dimensional relationship is as described above on the resin substrate, the figure of the second pattern printing pattern (in FIG. 4) The space between the printed overlapped portions can be made the same as that of the second printed pattern by opening a space of 6 mm or more (indicated by a star shape).
On the other hand, if the interval between the figures of the second pattern printed pattern is less than 6 mm, the overlap width b is 6 mm, so that the distance between figures looks relatively narrow.
その後、缶胴開口部近傍はネックイン加工機によりネックイン加工、及びフランジ加工機によりフランジ加工を施され、発泡インキ印刷シームレス缶が完成する。
なお、表面の仕上げニス層は、シームレス缶胴に被覆してから塗布されるのではなく、長尺印刷ラベル２０の外面側に発泡インキと仕上げニスを塗布して焼付けた後に、接着剤層１３を塗布したラベルとして作成することも出来る。
また、発泡インキ層１７の絵柄を規則性なくランダムに配置して特殊な加飾効果を得ることや、発泡インキ層１７を缶胴周方向に帯状にするなどして第１柄印刷模様１５と重ね合わせることにより第１柄印刷模様１５にマット感をもたせることも可能である。
Thereafter, the vicinity of the can body opening is subjected to neck-in processing by a neck-in processing machine and flange processing by a flange processing machine, and a foamed ink printing seamless can is completed.
The surface finish varnish layer is not applied after the seamless can body is coated, but after the foamed ink and finish varnish are applied and baked on the outer surface side of the long printed label 20, the adhesive layer 13 is applied. It can also be created as a label coated with.
Further, the pattern of the foamed ink layer 17 is randomly arranged without regularity to obtain a special decoration effect, or the foamed ink layer 17 is banded in the circumferential direction of the can body. It is also possible to give the first pattern printed pattern 15 a matte feeling by superimposing them.
［シームレスカップの作製］
素板厚０．２４ｍｍ、調質度Ｔ３−ＣＡのティンフリースチール板（表面処理被覆量として金属クロム量１２０ｍｇ／ｍ２、クロム酸化物量１５ｍｇ／ｍ２とした）の缶内面になる側に厚さ２０μｍの２軸延伸ポリエチレンテレフタレート／イソフタレート共重合体フィルムを、一方、缶外面になる側に酸化チタンを２０質量％含有する厚さ１５μｍの二軸延伸ポリエチレンテレフタレート／イソフタレート共重合体フィルムをフィルムの融点で両面同時に熱接着し、直ちに水冷することにより樹脂被覆金属板を得た。
この樹脂被覆金属板にグラマーワックスを均一に塗布した後、直径１４４ｍｍの円板に打ち抜き、絞り加工により直径５２ｍｍで高さ１１２ｍｍの薄肉化深絞リカップを得た。
この後、常法に従ってドーミング成形を行った後、上記の薄肉化深絞りカップを２１５℃で１分間熱処理し、フィルムの加工歪みを取り除くと共に、潤滑剤を揮発させた。次いで、開口端部の縁切りを行い、高さ１０６ｍｍのシームレスカップを得た。
[Preparation of seamless cup]
MotobanAtsu 0.24 mm, temper T3-CA of a tin-free steel plate (metal chromium amount 120 mg / m 2 as a surface treatment coating amount was chromium oxide content 15 mg / m 2) thickness on the side to become the inner surface of the can of A biaxially stretched polyethylene terephthalate / isophthalate copolymer film having a thickness of 20 μm, and a biaxially stretched polyethylene terephthalate / isophthalate copolymer film having a thickness of 15 μm containing 20% by mass of titanium oxide on the outer surface of the can. A resin-coated metal plate was obtained by heat-bonding both surfaces simultaneously at the melting point of the film and immediately cooling with water.
A glamor wax was uniformly applied to the resin-coated metal plate, then punched into a 144 mm diameter disc, and a thinned deep drawn recup having a diameter of 52 mm and a height of 112 mm was obtained by drawing.
Then, after performing doming molding according to a conventional method, the thinned deep drawn cup was heat-treated at 215 ° C. for 1 minute to remove film processing distortion and volatilize the lubricant. Next, the edge of the opening was cut off to obtain a seamless cup having a height of 106 mm.
［印刷ラベルの作製］
透明樹脂フィルム１６として、厚みが１２μｍの透明二軸延伸ポリエチレンテレフタレートフィルム（ＰＥＴフィルム）の片面に、常法に従ってコロナ処理を施し、コロナ処理側にグラビア印刷で厚さ２μｍの装飾模様１５を印刷し、焼付けを行った。
印刷焼付けした装飾模様１５の上にグラビアコーターで、酸化チタン顔料を５０質量％含んだ白インキでのベタ印刷層１４を厚さ１μｍに設け焼付けを行って印刷ラベルを作製した。
作製した印刷ラベルの白インキ層側に、ポリエステル樹脂系接着剤をグラビアコーターにて厚さ５μｍに設けた。
[Preparation of printed label]
As a transparent resin film 16, one side of a transparent biaxially stretched polyethylene terephthalate film (PET film) having a thickness of 12 μm is subjected to corona treatment according to a conventional method, and a decorative pattern 15 having a thickness of 2 μm is printed on the corona treatment side by gravure printing. Baked.
On the decorative pattern 15 printed and baked, a solid print layer 14 of white ink containing 50% by mass of a titanium oxide pigment was provided with a gravure coater to a thickness of 1 μm and baked to prepare a printed label.
A polyester resin adhesive was provided on the white ink layer side of the produced printing label with a thickness of 5 μm using a gravure coater.
［印刷ラベル被覆シームレスカップの作製］
上記で作製した接着剤層の付いた長尺印刷ラベル２０を、幅は缶胴高さで長さは缶胴周に加えて５ｍｍのオーバーラップ部を有する長さのサイズに切断し、１６０℃に加温した上記シームレスカップの外面に加圧しながら巻いてオーバーラップ部を接着させて、印刷ラベル被覆シームレスカップを作製した。
［発泡インキ印刷シームレス缶の作製］
得られた印刷ラベル被覆シームレスカップの外表面に、樹脂凸版を用いて、熱膨張性マイクロカプセルを含有した発泡インキ層１７をオフセットの曲面印刷で設けた。使用した発泡インキにおける発泡前の熱膨張性マイクロカプセルの粒子径は中心値５μｍで１〜１５μｍの分布をもち、殻壁軟化温度が１８０℃で、透明樹脂中への配合量は１．５質量％であった。
発泡インキ印刷図形は幅２１ｍｍの星形図形で、樹脂凸版の印刷可能範囲部を１６４ｍｍ、印刷可能範囲部の刷り始め側寸法ａ１を４ｍｍ、および及び刷り終わり側寸法ａ２を４ｍｍ、印刷オーバーラップ部を２ｍｍ、星形図形間の間隔を６ｍｍに設定して、６個の図形が配設された樹脂凸版を作製した。
得られた樹脂凸版を図３のようにプレートシリンダに設定して、曲面印刷機で発泡インキを缶胴外面に印刷し、更に外面にポリエステルアミノ系の仕上げニスを厚さ３μmに塗布し、２００℃４０秒の焼付けをオーブンで行った。次いで、作製したカップの開口部側をネッキング加工したのちフランジ加工して、発泡インキ印刷シームレス缶を作製した。
得られた発泡インキ印刷シームレス缶の発泡インキ層部は仕上げニス表面から測定したところ、算術平均粗さＲａが１．５μｍであり、オーバーラップ部を挟んだ星形図形間の間隔は６ｍｍであり、発泡インキの星形図形６個が缶胴外面に等間隔に配置されており、観る角度により星形図形の凹凸が微妙に浮き上がっており、しかも第１柄印刷模様が光沢を持っているという特殊な効果をもつ金属缶体であった。
[Preparation of printed label-coated seamless cup]
The long printed label 20 with the adhesive layer produced above was cut into a size having a width of the can body height and a length having an overlap portion of 5 mm in addition to the circumference of the can body. A printed label-covered seamless cup was prepared by applying pressure to the outer surface of the seamless cup that had been heated to roll and bonding the overlapped portion.
[Fabric ink printing seamless can production]
A foamed ink layer 17 containing thermally expandable microcapsules was provided on the outer surface of the obtained printed label-coated seamless cup using a resin relief printing by offset curved printing. The particle diameter of the thermally expandable microcapsule before foaming in the used foamed ink has a distribution of 1 to 15 μm with a center value of 5 μm, the shell wall softening temperature is 180 ° C., and the blending amount in the transparent resin is 1.5 mass. %Met.
The foamed ink-printed figure is a star-shaped figure with a width of 21 mm, the printable area of the resin relief printing plate is 164 mm, the printing start side dimension a1 is 4 mm, and the printing end side dimension a2 is 4 mm, the printing overlap part Was set to 2 mm, and the interval between star-shaped figures was set to 6 mm, and a resin relief printing plate having six figures arranged thereon was produced.
The obtained resin relief plate is set on a plate cylinder as shown in FIG. 3, and foamed ink is printed on the outer surface of the can body by a curved surface printing machine. Further, a polyesteramino finish varnish is applied on the outer surface to a thickness of 3 μm. Baking at 40 ° C. for 40 seconds was performed in an oven. Next, the opening side of the produced cup was necked and then flanged to produce a foamed ink printing seamless can.
The foamed ink layer portion of the resulting foamed ink-printed seamless can was measured from the finished varnish surface. The arithmetic average roughness Ra was 1.5 μm, and the distance between the star-shaped figures across the overlap portion was 6 mm. , 6 star-shaped figures of foamed ink are arranged at equal intervals on the outer surface of the can body, and the unevenness of the star-shaped figures is slightly raised depending on the viewing angle, and the first pattern printed pattern is glossy It was a metal can body with a special effect.
本発明の金属缶体は、シームレス缶の缶胴部外面に立体感や奥行き感を付与し、需要者に注意を喚起せしめることができ、産業上の利用可能性がきわめて高い。 The metal can body of the present invention gives a three-dimensional feeling and a sense of depth to the outer surface of the can body portion of the seamless can, which can draw attention to consumers, and has very high industrial applicability.
１０：金属缶体
１１：缶胴部
１１ａ：缶胴部の基体材料（缶胴金属）
１１ｂ：樹脂フィルム（缶胴外面フィルム）
１３：接着剤層
１４：ベタ印刷層
１５：装飾模様（第１柄印刷模様）
１６：透明樹脂フィルム
１７：発泡インキ層（第２柄印刷模様）
１８：仕上げニス層（透明樹脂層）
２０：印刷ラベル
10: Metal can body 11: Can body portion 11a: Base material of can body portion (can body metal)
11b: Resin film (can body outer surface film)
13: Adhesive layer 14: Solid print layer 15: Decoration pattern (first pattern print pattern)
16: Transparent resin film 17: Foamed ink layer (second pattern printing pattern)
18: Finish varnish layer (transparent resin layer)
20: Print label
Claims (5)
前記接着された透明樹脂フィルムの内面側には第１柄印刷模様が形成され、
外面側には焼付温度より低い殻壁軟化温度を有する熱膨張性マイクロカプセルを含有する発泡インキによる第２柄印刷模様が形成されていることを特徴とする金属缶体。 A metal can body provided with a transparent resin film through an adhesive layer on the outer surface of the can body of the metal can body,
A first pattern printed pattern is formed on the inner surface side of the bonded transparent resin film,
A metal can body characterized in that a second pattern printing pattern is formed by foaming ink containing thermally expandable microcapsules having a shell wall softening temperature lower than the baking temperature on the outer surface side.
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| JP2013531092A (en) * | 2010-05-28 | 2013-08-01 | ザ プロクター アンド ギャンブル カンパニー | Method and system for processing flexible films |
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