JP2008073759A - Resin-coated can and production method therefor - Google Patents
Resin-coated can and production method therefor Download PDFInfo
- Publication number
- JP2008073759A JP2008073759A JP2006259134A JP2006259134A JP2008073759A JP 2008073759 A JP2008073759 A JP 2008073759A JP 2006259134 A JP2006259134 A JP 2006259134A JP 2006259134 A JP2006259134 A JP 2006259134A JP 2008073759 A JP2008073759 A JP 2008073759A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- coated
- coating layer
- resin coating
- metal material
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 183
- 239000011347 resin Substances 0.000 title claims abstract description 183
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000011247 coating layer Substances 0.000 claims abstract description 65
- 238000005034 decoration Methods 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000010409 ironing Methods 0.000 claims abstract description 14
- 239000007769 metal material Substances 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 30
- 230000008569 process Effects 0.000 claims description 22
- 229920005992 thermoplastic resin Polymers 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 238000000071 blow moulding Methods 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 5
- 230000008025 crystallization Effects 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 2
- 230000001131 transforming effect Effects 0.000 claims 1
- -1 polypropylenes Polymers 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- WMYWOWFOOVUPFY-UHFFFAOYSA-L dihydroxy(dioxo)chromium;phosphoric acid Chemical compound OP(O)(O)=O.O[Cr](O)(=O)=O WMYWOWFOOVUPFY-UHFFFAOYSA-L 0.000 description 2
- KZTYYGOKRVBIMI-UHFFFAOYSA-N diphenyl sulfone Chemical compound C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 KZTYYGOKRVBIMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000005029 tin-free steel Substances 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- XCSGHNKDXGYELG-UHFFFAOYSA-N 2-phenoxyethoxybenzene Chemical compound C=1C=CC=CC=1OCCOC1=CC=CC=C1 XCSGHNKDXGYELG-UHFFFAOYSA-N 0.000 description 1
- LZFNKJKBRGFWDU-UHFFFAOYSA-N 3,6-dioxabicyclo[6.3.1]dodeca-1(12),8,10-triene-2,7-dione Chemical compound O=C1OCCOC(=O)C2=CC=CC1=C2 LZFNKJKBRGFWDU-UHFFFAOYSA-N 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 229920000572 Nylon 6/12 Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- YZDQQFAZKLGTQK-UHFFFAOYSA-N butanoic acid;ethene Chemical compound C=C.CCCC(O)=O YZDQQFAZKLGTQK-UHFFFAOYSA-N 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
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000001938 differential scanning calorimetry curve Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000001530 fumaric acid Substances 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
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-L isophthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC(C([O-])=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-L 0.000 description 1
- 150000003951 lactams Chemical group 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- UWJJYHHHVWZFEP-UHFFFAOYSA-N pentane-1,1-diol Chemical compound CCCCC(O)O UWJJYHHHVWZFEP-UHFFFAOYSA-N 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical compound CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Rigid Containers With Two Or More Constituent Elements (AREA)
Abstract
Description
本発明は、樹脂被覆層が積層形成された樹脂被覆金属素材に、絞り・しごき加工を施して樹脂被覆缶を製造するに際して、凹凸形状を付与する立体加飾加工を併せて施しても、樹脂被覆層の損傷などが抑制された樹脂被覆缶、及びそのような樹脂被覆缶の製造方法に関する。 The present invention provides a resin coated metal material in which a resin coating layer is laminated and is subjected to drawing and ironing to produce a resin-coated can. The present invention relates to a resin-coated can in which damage to the coating layer is suppressed and a method for producing such a resin-coated can.
近年、樹脂被覆層が積層形成された樹脂被覆金属素材に、絞り・しごき加工を施すことによって、つなぎ目のない缶形状に成形された樹脂被覆缶（樹脂被覆シームレス缶）が多用されるようになってきているが、このような樹脂被覆缶にあっては、成形加工時における樹脂被覆層の割れ、剥離などによる損傷や、被膜性能の劣化というような問題があることが指摘されている。 In recent years, resin-coated cans (resin-coated seamless cans) that have been formed into seamless cans by drawing and ironing resin-coated metal materials with a laminated resin coating layer have come to be widely used. However, it has been pointed out that such resin-coated cans have problems such as damage due to cracking and peeling of the resin coating layer during molding and deterioration of coating performance.
このため、従来、特許文献１、特許文献２などにおいて、これらの問題を解決するための種々の改善が提案されてきているとともに、このような樹脂被覆缶に対しても、例えば、特許文献３に示されているバルジ加工などのように、従来の平面印刷よりも加飾効果に優れた、缶壁面に凹凸を形成して加飾する立体加飾加工を併せて施すことにより、形状的な特徴をもたせて商品の差別化を図ることが求められている。 For this reason, conventionally, in Patent Document 1, Patent Document 2, and the like, various improvements for solving these problems have been proposed, and for such a resin-coated can, for example, Patent Document 3 By combining the three-dimensional decoration process that forms the irregularities on the wall surface of the can and has a decorative effect superior to conventional flat printing, such as bulge processing shown in There is a demand for product differentiation with distinctive features.
しかしながら、樹脂被覆金属素材に対し、絞り・しごき加工に加えて、凹凸形状を付与する立体加飾加工をさらに施すとすると、樹脂被覆層に及ぼされる負荷はいっそう過酷なものとなり、樹脂被覆層の損傷などの問題を解消するには、さらなる改善が必要であった。 However, if the resin-coated metal material is further subjected to a three-dimensional decoration process that gives an uneven shape in addition to drawing and ironing, the load applied to the resin coating layer becomes more severe, and the resin coating layer Further improvements were needed to eliminate problems such as damage.
本発明は、上記の事情に鑑みなされたものであり、樹脂被覆層が積層形成された樹脂被覆金属素材に、絞り・しごき加工を施して樹脂被覆缶を製造するに際して、立体加飾加工を併せて施しても、樹脂被覆層の損傷などが抑制された樹脂被覆缶、及びその製造方法の提供を目的とする。 The present invention has been made in view of the above circumstances, and when a resin-coated can material is produced by drawing and ironing a resin-coated metal material in which a resin coating layer is laminated, a three-dimensional decoration process is also performed. It is an object of the present invention to provide a resin-coated can in which damage to the resin coating layer is suppressed, and a method for producing the same.
本発明者らは、上記の課題を解決すべく鋭意検討を重ねたところ、樹脂被膜層を形成する樹脂の配向性に着目し、その配向性を制御することによって、樹脂被覆金属素材を缶形状に成形加工するにあたり、立体加飾加工を併せて施した場合であっても、樹脂被覆層の損傷や、皮膜性能の劣化を抑制することができると考え、本発明を完成するに至った。 The inventors of the present invention have made extensive studies in order to solve the above-mentioned problems. As a result, the resin-coated metal material can be formed into a can shape by paying attention to the orientation of the resin forming the resin coating layer and controlling the orientation. Therefore, even when a three-dimensional decoration process is performed together, it is considered that damage to the resin coating layer and deterioration of the film performance can be suppressed, and the present invention has been completed.
すなわち、本発明に係る樹脂被覆缶の製造方法は、樹脂被覆層が積層形成された樹脂被覆金属素材を缶形状に成形加工するにあたり、立体加飾加工を併せて施す樹脂被覆缶の製造方法であって、前記樹脂被覆金属素材に絞り・しごき加工を施して有底筒状の素缶を成形した後に、少なくとも立体加飾加工を施そうとする部位を缶内方に変形させてから、当該部位の一部、又は全部を缶外方に張り出させて缶壁面に凹凸を形成する方法としてある。 That is, the method for producing a resin-coated can according to the present invention is a method for producing a resin-coated can that is subjected to a three-dimensional decoration process in forming a resin-coated metal material having a resin coating layer formed into a can shape. After forming the bottomed cylindrical can by drawing and ironing the resin-coated metal material, at least the part to be subjected to the three-dimensional decorating process is deformed inward, This is a method of forming irregularities on the wall surface of the can by projecting part or all of the portion outward from the can.
このような方法とした本発明に係る樹脂被覆缶の製造方法によれば、少なくとも立体加飾加工を施そうとする部位を缶内方に変形させることにより、樹脂被覆層を形成する樹脂を裂けにくくして、その損傷や、被膜性能の劣化を抑制することができる。 According to the method for producing a resin-coated can according to the present invention as described above, the resin forming the resin coating layer is torn by deforming at least a portion to be subjected to the three-dimensional decoration process inwardly. It can be made difficult, and the damage and deterioration of the film performance can be suppressed.
また、本発明に係る樹脂被覆缶の製造方法は、少なくとも缶内面となる側に前記樹脂被覆層が積層形成された樹脂被覆金属素材を成形加工する方法とすることができる。
このような方法とすれば、内容物への金属溶出や、缶内面の腐食を避けるために、缶内面側に樹脂被覆層が形成されるようすることができる。
Moreover, the manufacturing method of the resin-coated can according to the present invention can be a method in which a resin-coated metal material in which the resin coating layer is laminated and formed on at least the side that is the inner surface of the can is formed.
With such a method, a resin coating layer can be formed on the inner surface of the can in order to avoid metal elution into the contents and corrosion of the inner surface of the can.
また、本発明に係る樹脂被覆缶の製造方法は、直径に対する高さの比が１以上となる有底筒状に、前記素缶を成形する方法とすることができる。 Moreover, the manufacturing method of the resin-coated can which concerns on this invention can be set as the method of shape | molding the said can in the bottomed cylinder shape whose ratio of the height with respect to a diameter is 1 or more.
また、本発明に係る樹脂被覆缶の製造方法は、前記樹脂被覆層が、延伸配向させると配向結晶化する結晶性の熱可塑性樹脂からなる方法とすることができる。 Moreover, the manufacturing method of the resin-coated can which concerns on this invention can be made into the method which consists of a crystalline thermoplastic resin in which the said resin coating layer carries out an orientation crystallization, if it carries out an extending | stretching orientation.
また、本発明に係る樹脂被覆缶の製造方法は、ブロー成形により立体加飾加工を施す方法とすることができる。 Moreover, the manufacturing method of the resin-coated can which concerns on this invention can be made into the method of giving a three-dimensional decoration process by blow molding.
また、本発明に係る樹脂被覆缶の製造方法は、少なくとも立体加飾加工を施そうとする部位における前記樹脂被覆層を形成する樹脂の延伸配向された分子鎖を延伸方向に直交する方向に圧縮するに先だって、当該部位を、前記樹脂被覆層を形成する樹脂の溶融開始温度乃至融点となる温度に加熱して、前記樹脂被覆層を形成する樹脂の金属素材への密着性を向上させる方法とすることができる。 In addition, the method for producing a resin-coated can according to the present invention compresses the stretched and oriented molecular chains of the resin that forms the resin coating layer at least in a region where three-dimensional decoration processing is to be performed in a direction perpendicular to the stretching direction. Prior to this, the portion is heated to a melting start temperature or a melting point of the resin forming the resin coating layer, and the adhesion of the resin forming the resin coating layer to the metal material is improved; can do.
また、本発明に係る樹脂被覆缶の製造方法は、前記樹脂被覆金属素材が、めっき鋼板、アルミニウム合金板に前記樹脂被覆層を積層形成してなり、前記樹脂被覆金属素材を缶形状に成形加工した後の缶壁面において、前記樹脂被覆層を除いた金属板部分の最小肉厚が０．１〜０．２ｍｍ、前記樹脂被覆層の厚みが２〜５０μｍとなるようにする方法とすることができる。 In the method for producing a resin-coated can according to the present invention, the resin-coated metal material is formed by laminating the resin-coated layer on a plated steel plate or an aluminum alloy plate, and the resin-coated metal material is molded into a can shape. The minimum wall thickness of the metal plate portion excluding the resin coating layer is 0.1 to 0.2 mm, and the thickness of the resin coating layer is 2 to 50 μm on the wall surface of the can. it can.
また、本発明に係る樹脂被覆缶は、樹脂被覆層が積層形成された樹脂被覆金属素材を缶形状に成形加工するに際し、立体加飾加工が併せて施されて缶壁面に凹凸が形成された樹脂被覆缶であって、少なくとも立体加飾加工が施された部位における前記樹脂被覆層を形成する樹脂の分子鎖が、缶高さ方向に延伸配向されているとともに、前記樹脂被覆層の被覆度が、ＥＲＶ換算で、０〜１２０ｍＡである構成としてある。 In addition, the resin-coated can according to the present invention was subjected to a three-dimensional decoration process when forming a resin-coated metal material having a resin coating layer laminated thereon into a can shape, and unevenness was formed on the can wall surface. In the resin-coated can, at least the molecular chain of the resin forming the resin-coated layer in the portion subjected to the three-dimensional decoration is stretched and oriented in the can height direction, and the degree of coverage of the resin-coated layer However, it is set as the structure which is 0-120 mA in conversion of ERV.
また、本発明に係る樹脂被覆缶は、前記樹脂被覆層が、延伸配向させると配向結晶化する結晶性の熱可塑性樹脂からなる構成とすることができる。 Moreover, the resin-coated can according to the present invention may be configured such that the resin coating layer is made of a crystalline thermoplastic resin that undergoes orientational crystallization when stretched and oriented.
また、本発明に係る樹脂被覆缶は、前記樹脂被覆金属素材が、アルミニウム合金からなる金属板に前記樹脂被覆層を積層形成してなり、前記樹脂被覆金属素材を缶形状に成形加工した後の缶壁面において、前記樹脂被覆層を除いた金属板部分の最小肉厚が０．１〜０．２ｍｍ、前記樹脂被覆層の厚みが２〜５０μｍとされた構成とすることができる。 In the resin-coated can according to the present invention, the resin-coated metal material is formed by laminating the resin-coated layer on a metal plate made of an aluminum alloy, and the resin-coated metal material is molded into a can shape. In the can wall surface, the metal plate portion excluding the resin coating layer may have a minimum thickness of 0.1 to 0.2 mm, and the resin coating layer may have a thickness of 2 to 50 μm.
このような本発明によれば、樹脂被覆層が積層形成された樹脂被覆金属素材を絞り・しごき加工後、バルジ成形により缶形状に成形するに際し、素缶を成形した後に、少なくとも立体加飾加工を施そうとする部位を缶内方に変形させることにより、樹脂被覆層を形成する樹脂を裂けにくくして、立体加飾加工を併せて施す場合でも、樹脂被覆層の損傷や、被膜性能の劣化を抑制することができる。 According to the present invention, after drawing and ironing a resin-coated metal material on which a resin coating layer is formed and forming it into a can shape by bulge forming, after forming an elementary can, at least three-dimensional decoration processing Even when the resin forming the resin coating layer is made difficult to tear and the three-dimensional decoration is applied together, the resin coating layer is damaged or the coating performance is reduced. Deterioration can be suppressed.
以下、本発明の好ましい実施形態について、図面を参照しつつ説明する。
なお、図１は、本発明に係る樹脂被覆缶の実施形態の概略を示す正面図であり、図２は、本発明に係る樹脂被覆缶の製造方法の実施形態の概略を示す工程図である。
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 is a front view showing an outline of an embodiment of a resin-coated can according to the present invention, and FIG. 2 is a process diagram showing an outline of an embodiment of a method for producing a resin-coated can according to the present invention. .
図１に示す樹脂被覆缶１は、２ピース缶と称される缶形態を備え、缶底１１が一体とされた有底胴缶１０と、内容物が充填された後に、この有底胴缶１０の開口部に取り付けられる缶蓋２０とからなっている。 A resin-coated can 1 shown in FIG. 1 has a can form called a two-piece can, and a bottomed barrel can 10 in which a can bottom 11 is integrated, and after the contents are filled, the bottomed barrel can 10 can lids 20 attached to the openings.
このような２ピース缶において、有底胴缶１０は、一般には、樹脂被覆層が積層形成された樹脂被覆金属素材を円板状などの任意の形状に打ち抜き、これに絞り・しごき加工を施して、つなぎ目のない有底筒状に成形するとともに、その開口部に缶蓋２０を取り付けるためのネック加工、フランジ加工を施して、所定の缶形状に成形加工される。 In such a two-piece can, the bottomed body can 10 is generally formed by punching a resin-coated metal material having a resin coating layer formed into a disc shape or the like, and subjecting it to drawing and ironing. Then, it is molded into a bottomed cylindrical shape with no joints, and is subjected to neck processing and flange processing for attaching the can lid 20 to the opening, and is molded into a predetermined can shape.
そして、本実施形態にあっては、上記のようにして樹脂被覆金属素材を所定の缶形状に成形加工するにあたり、立体加飾加工を併せて施すことによって、有底胴缶１０の缶壁面に、図示するような張出部１２を形成するなどして、任意の凹凸形状を付与している。 And in this embodiment, in shaping | molding a resin-coated metal raw material in a predetermined can shape as mentioned above, by giving a three-dimensional decoration process together, it can be applied to the can wall surface of the bottomed body can 10. Arbitrary irregularities are given by forming an overhanging portion 12 as shown in the figure.
本実施形態において、有底胴缶１０を形成する樹脂被覆金属素材としては、めっき鋼板、アルミニウム合金などからなる金属板に、熱可塑性樹脂、特に延伸配向させると配向結晶化する結晶性の熱可塑性樹脂からなる樹脂被覆層を公知の手段、例えば、キャストフィルムのラミネーション、共押出コート法などにより、実質的に未配向の状態で積層形成したものが用いられる。 In the present embodiment, the resin-coated metal material forming the bottomed body can 10 is a thermoplastic resin, particularly a crystalline thermoplastic that crystallizes when stretched and oriented on a metal plate made of a plated steel plate, an aluminum alloy, or the like. A resin coating layer made of a resin is used which is laminated and formed in a substantially unoriented state by a known means such as lamination of a cast film, a coextrusion coating method, or the like.
ここで、アルミニウム合金としては、例えば、ＪＩＳ Ｈ ４０００において、３０００番系、５０００番系、６０００番系の合金番号に区分され、化学成分として、Ｍｎ，Ｍｇ，Ｃｕ，Ｓｉ，Ｆｅが一種、又は二種以上添加されているものが好ましい。 Here, as an aluminum alloy, for example, in JIS H4000, it is classified into an alloy number of 3000 series, 5000 series, and 6000 series, and chemical components include Mn, Mg, Cu, Si, Fe, What added 2 or more types is preferable.
Ｍｎを添加すると、成形性を損なうことなく、耐食性や強度を高めることができ、その添加量は０．１〜１．５重量％とするのが好ましい。Ｍｎの添加量が０．１％未満であると耐食性が十分に得られなくなり、Ｍｎの添加量が１．５重量％を超えると成形性が低下してしまう。 When Mn is added, corrosion resistance and strength can be increased without impairing moldability, and the addition amount is preferably 0.1 to 1.5% by weight. If the added amount of Mn is less than 0.1%, sufficient corrosion resistance cannot be obtained, and if the added amount of Mn exceeds 1.5% by weight, the moldability is lowered.
Ｍｇを添加すると、成形性、耐食性、強度を向上させることができ、その添加量は０．８〜５．０重量％とするのが好ましい。Ｍｇの添加量が０．８重量％未満であると強度が十分に得られず、Ｍｇの添加量が５．０重量％を超えると成形性が低下し、割れ、しわなどが発生しやすくなる。 When Mg is added, moldability, corrosion resistance, and strength can be improved, and the addition amount is preferably 0.8 to 5.0% by weight. If the added amount of Mg is less than 0.8% by weight, sufficient strength cannot be obtained, and if the added amount of Mg exceeds 5.0% by weight, formability is reduced, and cracks, wrinkles, etc. are likely to occur. .
Ｃｕを添加すると、強度を向上させることができ、その添加量は０．０１〜０．８重量％とするのが好ましい。Ｃｕの添加量が０．０１重量％未満であると耐食性が十分に得られず、Ｃｕの添加量が０．８重量％を超えると成形性が低下してしまう。 When Cu is added, the strength can be improved, and the addition amount is preferably 0.01 to 0.8% by weight. If the added amount of Cu is less than 0.01% by weight, sufficient corrosion resistance cannot be obtained, and if the added amount of Cu exceeds 0.8% by weight, the moldability is lowered.
Ｓｉは、特にＭｇとともに添加したときに、強度、耐摩耗性を向上させることができ、その添加量は０．０３〜０．６重量％とするのが好ましい。Ｓｉの添加量が０．０３重量％未満であると強度が十分に得られず、Ｓｉの添加量が０．６重量％を超えると成形性が低下してしまう。 When Si is added together with Mg, the strength and wear resistance can be improved, and the addition amount is preferably 0.03 to 0.6% by weight. If the added amount of Si is less than 0.03% by weight, sufficient strength cannot be obtained, and if the added amount of Si exceeds 0.6% by weight, the moldability is lowered.
Ｆｅは、特にＭｎとともに添加したときに、耐食性を向上させることができ、その添加量は、０．０５〜０．８重量％とするのが好ましい。Ｆｅの添加量が０．０５重量％未満であると強度が十分に得られず、Ｆｅの添加量が０．８重量％を超えると成形性が低下してしまう。 Especially when Fe is added together with Mn, the corrosion resistance can be improved, and the addition amount is preferably 0.05 to 0.8% by weight. If the added amount of Fe is less than 0.05% by weight, sufficient strength cannot be obtained, and if the added amount of Fe exceeds 0.8% by weight, the moldability deteriorates.
このようなアルミニウム合金からなる金属板の厚みは、強度、成形性の観点から、０．１〜１ｍｍ程度の範囲にあるのが好ましく、成形後の最小肉厚、すなわち、有底胴缶１０の缶壁面における樹脂被覆層を除いた金属板部分の最小肉厚が０．１〜０．２ｍｍであるのが好ましい。
有底胴缶１０の缶壁面において、その金属板部分の最小肉厚が０．１ｍｍ未満では破胴などの成形不良が起こり、０．２ｍｍを超えると、缶壁面の肉厚を低減することによる省資源化が図れず、コスト削減の効果が得られにくくなってしまう。
The thickness of the metal plate made of such an aluminum alloy is preferably in the range of about 0.1 to 1 mm from the viewpoint of strength and formability, and the minimum thickness after forming, that is, the bottomed barrel can 10 is The minimum thickness of the metal plate portion excluding the resin coating layer on the can wall surface is preferably 0.1 to 0.2 mm.
In the can wall surface of the bottomed can 10, if the minimum thickness of the metal plate portion is less than 0.1 mm, molding failure such as a broken cylinder occurs, and if it exceeds 0.2 mm, the thickness of the can wall surface is reduced. Resource saving cannot be achieved, and it becomes difficult to obtain the cost reduction effect.
なお、アルミニウム合金からなる金属板への樹脂被覆層の密着性の見地からは、アルミニウム材の表面に表面処理膜を形成しておくのが好ましい。このような表面処理としては、りん酸クロメート処理、ジルコニウム処理、りん酸処理、ポリアクリル酸処理、陽極酸化処理などが好ましい。 From the viewpoint of adhesion of the resin coating layer to a metal plate made of an aluminum alloy, it is preferable to form a surface treatment film on the surface of the aluminum material. As such surface treatment, phosphoric acid chromate treatment, zirconium treatment, phosphoric acid treatment, polyacrylic acid treatment, anodizing treatment, and the like are preferable.
また、めっき鋼板としては、例えば、ＴＦＳ（ティンフリースチール）、錫めっき鋼板、錫・鉄合金めっき鋼板、錫・ニッケルめっき鋼板、鉄・錫・ニッケル合金めっき鋼板などが好ましく用いられ、これらのめっき上にクロム酸処理、クロメート処理、シランカップリング剤処理、有機・無機複合処理などを施したものが特に好ましい。めっき鋼板基材の厚みは、缶底１１の耐圧変形性によって決定されるが、一般には、０．１〜０．４ｍｍ、特に０．１２〜０．３５ｍｍの範囲内にあるのが好ましい。 Moreover, as a plated steel plate, for example, TFS (tin-free steel), tin-plated steel plate, tin / iron alloy plated steel plate, tin / nickel plated steel plate, iron / tin / nickel alloy plated steel plate, etc. are preferably used. Those subjected to chromic acid treatment, chromate treatment, silane coupling agent treatment, organic / inorganic composite treatment, etc. are particularly preferred. The thickness of the plated steel plate base material is determined by the pressure-resistant deformability of the can bottom 11, but is generally within a range of 0.1 to 0.4 mm, particularly 0.12 to 0.35 mm.
また、有底胴缶１０を形成する樹脂被覆金属素材において、樹脂被覆層は、延伸配向により配向結晶化する結晶性の熱可塑性樹脂を用いて形成するのが好ましいが、そのような熱可塑性樹脂のなかでも、ポリエステル，ナイロン，ポリプロピレンなどの比較的透明性が高く、耐熱性に優れたものが好ましく用いられる。 Further, in the resin-coated metal material forming the bottomed can 10, the resin coating layer is preferably formed using a crystalline thermoplastic resin that is oriented and crystallized by stretching orientation. Of these, polyesters, nylons, polypropylenes and the like that are relatively transparent and excellent in heat resistance are preferably used.
ポリエステルとしては、エチレンテレフタレート，エチレンブチレート，エチレンイソフタレートを主たる構成成分としたものが好ましく用いられ、これらと他のジカルボン酸成分や、グリコール成分とを共重合させたものを用いることもできる。 As the polyester, those mainly composed of ethylene terephthalate, ethylene butyrate, and ethylene isophthalate are preferably used, and those obtained by copolymerizing these with other dicarboxylic acid components or glycol components can also be used.
共重合させるジカルボン酸成分としては、ナフタレンジカルボン酸，ジフェニルジカルボン酸，ジフェニルスルホンジカルボン酸，ジフェノキシエタンジカルボン酸，５−ナトリウムスルホイソフタル酸，フタル酸等の芳香族ジカルボン酸，シュウ酸，コハク酸，アジピン酸，セバシン酸，ダイマー酸，マレイン酸，フマル酸等の脂肪族ジカルボン酸，シクロヘキサンジカルボン酸等の脂環族ジカルボン酸，ｐ−オキシ安息香酸等のオキシカルボン酸などが挙げられる。これらは二種以上を併用してもよい。 Examples of the dicarboxylic acid component to be copolymerized include naphthalene dicarboxylic acid, diphenyl dicarboxylic acid, diphenyl sulfone dicarboxylic acid, diphenoxyethane dicarboxylic acid, 5-sodium sulfoisophthalic acid, aromatic dicarboxylic acid such as phthalic acid, oxalic acid, succinic acid, Examples thereof include aliphatic dicarboxylic acids such as adipic acid, sebacic acid, dimer acid, maleic acid and fumaric acid, alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid, and oxycarboxylic acids such as p-oxybenzoic acid. Two or more of these may be used in combination.
共重合させるグリコール成分としては、プロパンジオール，ブタンジオール，ペンタンジオール，ネオペンチルグリコール等の脂肪族グリコール，シクロヘキサンジメタノール等の脂環族グリコール，ビスフェノールＡ，ビスフェノールＳ等の芳香族グリコール，ジエチレングリコール，ポリエチレングリコール等のポリオキシエチレングリコールなどが挙げられる。これらは二種以上を併用してもよい。 Examples of the glycol component to be copolymerized include aliphatic glycols such as propanediol, butanediol, pentanediol, and neopentyl glycol, alicyclic glycols such as cyclohexanedimethanol, aromatic glycols such as bisphenol A and bisphenol S, diethylene glycol, and polyethylene. And polyoxyethylene glycol such as glycol. Two or more of these may be used in combination.
ナイロンとしては、ナイロン６６，ナイロン６１０，ナイロン６１２等のジアミンとジカルボン酸との縮重合体，ナイロン６，ナイロン１１，ナイロン１２等のラクタムの開環重合体からなるものを用いることができる。 As the nylon, those made of a condensed polymer of diamine and dicarboxylic acid such as nylon 66, nylon 610, nylon 612, etc., or a lactam ring-opening polymer such as nylon 6, nylon 11, nylon 12, etc. can be used.
このような樹脂被覆層は、樹脂被覆金属素材の缶内面となる側と缶外面となる側の両方、又はいずれか一方に積層形成することができるが、内容物への金属溶出や、缶内面の腐食を避けるために、少なくとも缶内面となる側に積層形成するのが好ましい。また、樹脂被覆層の厚み（缶内面となる側と缶外面となる側の両方に積層形成されている場合は、両方の厚みの合計とする）は、樹脂被覆缶１の流通時の破胴耐性を保持する観点から、樹脂被覆金属素材を缶形状に成形加工した後の缶壁面において、最薄部において２μｍ以上となるようにするのが好ましく、より好ましくは５μｍ以上である。一方、経済性の観点から、その上限は５０μｍ以下とするのが好ましく、より好ましくは２５μｍ以下である。 Such a resin coating layer can be formed by laminating the resin coated metal material on both the inner surface and the outer surface of the can, or either one of them. In order to avoid corrosion, it is preferable to form a laminate on at least the inner surface of the can. In addition, the thickness of the resin coating layer (when the layers are formed on both the inner surface and the outer surface of the can), the thickness of the resin coating can 1 is broken when the resin coated can 1 is distributed. From the viewpoint of maintaining resistance, it is preferable that the wall surface of the can after the resin-coated metal material is formed into a can shape has a thickness of 2 μm or more at the thinnest portion, more preferably 5 μm or more. On the other hand, from the viewpoint of economy, the upper limit is preferably 50 μm or less, and more preferably 25 μm or less.
本実施形態において、樹脂被覆缶１を製造するには、まず、樹脂被覆金属素材に絞り・しごき加工を施して、図２（ａ）に示すような有底筒状の素缶１０ａを成形する。
なお、絞り・しごき加工には、特開平１−２５８８２２号公報や、特開平７−２７５９６１号公報などに記載されているような、絞り成形後に、ストレッチドロー（前絞りカップの再絞り＋側壁部曲げ伸ばし）、又はストレッチアイアニングを行う成形方法なども含まれ、板状の樹脂被覆金属素材を缶形状に成形加工することが可能なこの種の成形方法のなかから適宜選択して利用することができる。
In this embodiment, in order to manufacture the resin-coated can 1, first, the resin-coated metal material is subjected to drawing and ironing to form a bottomed cylindrical can 10 a as shown in FIG. .
For drawing and ironing, a stretch draw (redrawing of the front drawing cup + side wall portion) is performed after drawing, as described in JP-A-1-258822 and JP-A-7-275961. (Bending and stretching), or forming methods that perform stretch ironing, etc. are included, and a plate-shaped resin-coated metal material can be appropriately selected from these types of forming methods that can be processed into a can shape. Can do.
このとき、樹脂被覆金属素材が有底筒状に延展されるに伴って、素缶１０ａの缶壁面に位置する樹脂被覆層が缶高さ方向に一軸延伸される。そして、延伸された樹脂被覆層を形成する樹脂の分子鎖が、缶高さ方向に延伸配向して配向結晶化し、これによって、樹脂被覆層の強度が向上するとともに、バリヤー性、耐食性、耐デント性、耐工具疵つき性も向上させることができる。
なお、缶高さ方向とは、缶底１１を下にして水平面に置いたときに、水平面に直交する方向に沿った方向であって、軸Ｃに平行な方向をいうものとする。
At this time, as the resin-coated metal material is extended into a bottomed cylindrical shape, the resin coating layer located on the can wall surface of the can 10a is uniaxially stretched in the can height direction. The molecular chain of the resin forming the stretched resin coating layer is stretched and oriented in the can height direction to cause orientation crystallization, thereby improving the strength of the resin coating layer and improving barrier properties, corrosion resistance, dent resistance. And tool tack resistance can be improved.
The can height direction refers to a direction parallel to the axis C along the direction perpendicular to the horizontal plane when the can bottom 11 is placed on a horizontal plane.
樹脂被覆金属素材を有底筒状に成形加工して素缶１０ａを形成するにあたり、素缶１０ａは、直径φ１に対する高さｈの比ｈ／φ１が１以上となっているのが好ましい。
直径φ１に対する高さｈの比ｈ／φ１が上記範囲に満たないと、容器として内容積が充分確保できない。
In forming the base can 10a by forming a resin-coated metal material into a bottomed cylindrical shape, the ratio h / φ1 of the height h to the diameter φ1 of the base can 10a is preferably 1 or more.
If the ratio h / φ1 of the height h to the diameter φ1 is less than the above range, a sufficient internal volume cannot be secured as a container.
樹脂被覆層を形成する樹脂を配向結晶化させると、樹脂被覆層の強度を高めることができるが、分子鎖が延伸配向されて配向結晶化された樹脂は、延伸方向に直交する方向に引き延ばそうとする力に対して裂けやすく、そのままでは、立体加飾加工を施すには適さない。
このため、本実施形態では、図２（ｂ）に示すように、素缶１０ａに縮径絞り加工を施して、缶壁面の全体を縮径させている。このようにすることで、缶壁面に位置する樹脂被覆層を形成する樹脂の延伸配向された分子鎖が、その延伸方向に直交する方向に圧縮されて、その配向性が制御され、これによって、立体加飾加工を施す際に樹脂被覆層に負荷が及ぼされても、樹脂被覆層を形成する樹脂を裂けにくくして、その損傷や、被膜性能の劣化を抑制することができると考えられる。
When the resin that forms the resin coating layer is crystallized by orientation, the strength of the resin coating layer can be increased. However, the resin that has been oriented and crystallized by stretching and orientation of molecular chains is stretched in a direction perpendicular to the stretching direction. It is easy to tear against the intended force, and as it is, it is not suitable for performing a three-dimensional decoration process.
For this reason, in the present embodiment, as shown in FIG. 2B, the diameter of the entire can wall surface is reduced by subjecting the element can 10a to a diameter reduction drawing process. By doing in this way, the stretch-oriented molecular chain of the resin forming the resin coating layer located on the can wall surface is compressed in a direction orthogonal to the stretching direction, and the orientation is controlled, thereby Even when a load is applied to the resin coating layer when performing the three-dimensional decoration processing, it is considered that the resin forming the resin coating layer is hardly torn and the damage and deterioration of the coating performance can be suppressed.
また、本実施形態では、素缶１０ａに縮径絞り加工を施すに先だって、少なくとも立体加飾加工を施そうとする部位を、樹脂被覆層を形成する樹脂の溶融開始温度乃至融点となる温度に加熱して、この部位における樹脂被覆層を形成する樹脂の金属素材への密着性を向上させることができる。
なお、溶融開始温度とは、ＪＩＳ Ｋ ７１２１に準拠して、示差走査熱量測定によって得られたＤＳＣ曲線から、補外融解開始温度として得られた値をいうものとする。
In the present embodiment, prior to subjecting the can 10a to the diameter reduction process, at least the part to be subjected to the three-dimensional decoration process is set to a temperature that is a melting start temperature or a melting point of the resin that forms the resin coating layer. By heating, the adhesion of the resin forming the resin coating layer at this site to the metal material can be improved.
The melting start temperature is a value obtained as an extrapolated melting start temperature from a DSC curve obtained by differential scanning calorimetry according to JIS K7121.
その後、本実施形態にあっては、図２（ｃ）に示すように、素缶１０ａの開口部に、缶蓋２０を取り付けるためのネック加工、フランジ加工を施してから、図２（ｄ）に示すように、缶壁面の一部、又は全部を缶外方に張り出させて、張出部１２を形成することにより、缶壁面に凹凸形状を付与して立体加飾加工を施している。 Thereafter, in the present embodiment, as shown in FIG. 2 (c), the neck portion for attaching the can lid 20 and the flange processing are applied to the opening of the element can 10a, and then, FIG. 2 (d). As shown in the above, a part or the whole of the can wall surface is projected outwardly to form the projecting portion 12, thereby giving the can wall surface an uneven shape and performing a three-dimensional decoration process. .
有底胴缶１０の缶壁面に凹凸形状を付与する立体加飾加工としては、例えば、素缶１０ａ内を加圧して、缶壁面の一部、又は全部を、素缶１０ａの内側から缶外方に向けて張り出させるようにすればよい。このように、立体加飾加工としては、一般に、バルジ加工と称される加工手段を利用することができるが、形状再現性などの観点から、金型内に配置された素缶１０ａ内にブローエアーを供給して加圧し、これによって、缶壁面の一部、又は全部を缶外方に張り出させるとともに、金型の内面に形成された形状を賦形してなるブロー成形によるのが好ましい。また、このようなブロー成形の他に、例えば、特開平１１−１５６４６３号公報に記載されているような、割型を缶内部に挿入した後に拡開させて缶外方に張り出し成形を行う、拡径金型によるエキスパンド成形によっても、形状再現性よく缶壁面の一部、又は全部を缶外方に張り出させることができる。 As a three-dimensional decorating process for imparting an uneven shape to the can wall surface of the bottomed barrel can 10, for example, the inside of the can 10a is pressurized so that part or all of the can wall surface is exposed from the inside of the can 10a to the outside of the can. It should be made to project toward the direction. Thus, as the three-dimensional decoration processing, a processing means generally called bulge processing can be used, but from the viewpoint of shape reproducibility and the like, it is blown into the raw can 10a arranged in the mold. It is preferable to supply air and pressurize it, thereby causing part or all of the can wall surface to protrude outward and forming the shape formed on the inner surface of the mold. . In addition to such blow molding, for example, as described in JP-A No. 11-156463, after the split mold is inserted into the inside of the can, it is expanded to perform outward molding. Even by expanding molding with a diameter-expanding mold, part or all of the can wall surface can be projected outwardly with good shape reproducibility.
以上のようにして得られた樹脂被覆缶１は、立体加飾加工により缶壁面に凹凸形状が付与されながらも、樹脂被覆層の損傷や、被膜性能の劣化が抑制されており、樹脂被覆層の被覆度が、ＥＲＶ換算で０〜１２０ｍＡという優れた値を示す。
さらに、樹脂被覆缶１は、缶壁面における樹脂被覆層が配向結晶化により強度が高められているため、樹脂被覆金属素材の肉厚（金属板部分の肉厚、及び樹脂被覆層の肉厚）が薄くとも、突き刺し強度に優れたものである。
Although the resin-coated can 1 obtained as described above is provided with uneven shapes on the wall surface of the can by three-dimensional decoration processing, damage to the resin coating layer and deterioration of the coating performance are suppressed. The degree of coverage is an excellent value of 0 to 120 mA in terms of ERV.
Further, since the strength of the resin-coated can 1 is enhanced by orientation crystallization of the resin-coated layer on the can wall surface, the thickness of the resin-coated metal material (the thickness of the metal plate portion and the thickness of the resin-coated layer) Even if it is thin, it has excellent piercing strength.
ここで、ＥＲＶ換算により得られる被覆度は、得られた樹脂被覆缶に、濃度１重量％の食塩水を立体加飾加工が施された部分が浸されるまで満たし、エナメルレーターでＥＲＶ（エナメルレイティング値）を測定した値をいうものとし、缶底の外面側に金属露出部を形成して陽極に接続する一方、陰極を缶内に満たされた食塩水に浸して、室温（約２３℃）下で、６Ｖの直流電圧を３０秒間印加した後の電流値とする。このような測定において、電流が多く流れるほど絶縁体である樹脂被覆層に欠陥が存在し、缶内面の金属が露出していることを示している。
したがって、樹脂被覆層の被覆度が上記範囲にある樹脂被覆缶１は、樹脂被覆層の欠陥がほとんどなく、缶内面の金属が露出していないので、このような樹脂被覆缶１を用いれば、内容物への金属溶出や、缶内面の腐食を有効に回避することができる。
Here, the degree of coverage obtained by ERV conversion is such that the obtained resin-coated can is filled with 1% by weight of saline until the part where the three-dimensional decoration is applied is immersed, and the ERV (enamel) is used with an enamelling machine. (Rating value) is a measured value, and a metal exposed portion is formed on the outer surface side of the bottom of the can and connected to the anode, while the cathode is immersed in a saline solution filled in the can and room temperature (about 23 ° C. ) Below, let it be a current value after applying a DC voltage of 6V for 30 seconds. In such a measurement, the more current flows, the more defects are present in the resin coating layer that is an insulator, and the metal on the inner surface of the can is exposed.
Therefore, the resin-coated can 1 having a resin coating layer covering degree in the above range has almost no defects in the resin-coated layer and the metal on the inner surface of the can is not exposed. Therefore, if such a resin-coated can 1 is used, Elution of metal into the contents and corrosion of the inner surface of the can can be effectively avoided.
次に、具体的な実施例を挙げて、本発明をより詳細に説明する。 Next, the present invention will be described in more detail with reference to specific examples.
［実施例］
元板厚０．３０ｍｍのＡ３００４P−Ｈ１８（ＪＩＳ H ４０００による）のアルミニウム基板（基板の組成は、Ｍｎ：１．１重量％，Ｍｇ：１．１重量％，Ｃｕ：０．１９重量％，Ｓｉ：０．３０重量％，Ｆｅ：０．４３重量％，残部Ａｌ）の表面に、金属クロム換算で、クロム量が２０ｍｇ／ｍ２となるリン酸クロム酸処理を施し、この基板に、共重合成分としてイソフタル酸量が１０モル％を含むポリエチレンテレフタレート／イソフタレート（ＰＥＴ／ＩＡ）共重合樹脂の無延伸フィルム（内面側フィルム厚１６μｍ，外面側フィルム厚１６μｍ）を、２５０℃の温度でラミネートし、熱可塑性樹脂被覆アルミニウム薄板を製造した。
[Example]
Aluminum substrate of A3004P-H18 (according to JIS H 4000) with a base plate thickness of 0.30 mm (the composition of the substrate is Mn: 1.1 wt%, Mg: 1.1 wt%, Cu: 0.19 wt%, Si : 0.30% by weight, Fe: 0.43% by weight, balance Al), and treated with phosphoric acid chromic acid so that the amount of chromium is 20 mg / m 2 in terms of metallic chromium. An unstretched film of polyethylene terephthalate / isophthalate (PET / IA) copolymer resin containing 10 mol% of isophthalic acid as an ingredient (inner side film thickness 16 μm, outer surface film thickness 16 μm) is laminated at a temperature of 250 ° C. A thermoplastic resin-coated aluminum sheet was produced.
この熱可塑性樹脂被覆アルミニウム薄板を円盤状に打ち抜き、その後、絞り・しごき加工、開口端部のトリミングを行って、缶胴側壁の板厚が０．１１９ｍｍ（アルミニウム合金板厚０．１０８ｍｍ，熱可塑性樹脂フィルム内面側厚さ０．００６ｍｍ），胴径φ１＝６６ｍｍ，高さｈ＝１２５ｍｍの素缶を得た。そして、得られた素缶をオーブンにて２００℃下に４０秒間置いた。 This thermoplastic resin-coated aluminum thin plate is punched into a disk shape, then drawn, ironed, and trimmed at the end of the opening. The wall thickness of the can barrel side wall is 0.119 mm (aluminum alloy plate thickness 0.108 mm, thermoplastic) Resin film inner surface side thickness 0.006 mm), body diameter φ1 = 66 mm, height h = 125 mm was obtained. Then, the obtained can was placed in an oven at 200 ° C. for 40 seconds.
次に、上記素缶を絞り成形により胴径φ２＝６１．５ｍｍとなるよう加工（６．８％縮径）し、開口部をネック加工，フランジ加工して缶予備成形体を得、この缶予備成形体を金型内に閉じ込めて、ブロー成形により最大胴径がφ３＝６６ｍｍ（６．８％拡径）である立体形状に形成し、立体形状を有した樹脂被覆缶を得た。 Next, the above can is processed by drawing to have a body diameter φ2 = 61.5 mm (6.8% diameter reduction), and the opening is necked and flanged to obtain a can preform, and this can The preform was confined in a mold and formed into a three-dimensional shape having a maximum barrel diameter of φ3 = 66 mm (6.8% diameter expansion) by blow molding to obtain a resin-coated can having a three-dimensional shape.
この立体形状を有する樹脂被覆缶についてＥＲＶを測定したところ、電流値は１２０ｍＡ以下であった。また、缶壁面をＳＥＭにて観察したところ、樹脂皮膜に破損はみられなかった。
なお、図３（ａ）は、素缶の缶壁面のＳＥＭ像であり、図３（ｂ）は、実施例における立体形状を有した樹脂被覆缶の缶壁面のＳＥＭ像である。
When ERV was measured about the resin-coated can which has this three-dimensional shape, the electric current value was 120 mA or less. Moreover, when the can wall surface was observed by SEM, the resin film was not damaged.
FIG. 3A is an SEM image of the can wall surface of the can, and FIG. 3B is an SEM image of the can wall surface of the resin-coated can having a three-dimensional shape in the example.
［比較例］
実施例と同様の熱可塑性樹脂被覆アルミニウム薄板を円盤状に打ち抜き、その後、絞りしごき加工を行って、缶胴側壁の板厚が０．１１９ｍｍ（アルミニウム合金板厚０．１０８ｍｍ，熱可塑性樹脂フィルム内面側厚さ０．００６ｍｍ），胴径φ１＝６６ｍｍ，高さｈ＝１２５ｍｍの素缶を得、得られた素缶をオーブンにて２００℃下に４０秒間置いた。
さらに、開口端部のトリミングを行って素缶を得、この素缶の開口部をネック加工，フランジ加工したものを金型内に閉じ込めて、ブロー成形により最大胴径がφ３＝７０．６ｍｍ（７％拡径）である立体形状を形成し、立体形状を有した樹脂被覆缶を得た。
[Comparative example]
The same thermoplastic resin-coated aluminum thin plate as in the example was punched into a disk shape, and then squeezed and ironed, so that the thickness of the can barrel side wall was 0.119 mm (aluminum alloy plate thickness 0.108 mm, inner surface of the thermoplastic resin film) A plain can having a side thickness of 0.006 mm), a body diameter φ1 = 66 mm, and a height h = 125 mm was obtained, and the obtained can was placed in an oven at 200 ° C. for 40 seconds.
Furthermore, trimming of the opening end portion is performed to obtain a can, and the opening portion of the can is necked and flanged and confined in a mold, and the maximum body diameter is φ3 = 70.6 mm (by blow molding) A three-dimensional shape having a diameter of 7% was formed, and a resin-coated can having a three-dimensional shape was obtained.
この立体形状を有する樹脂被覆缶についてＥＲＶを測定したところ、電流値は１２０ｍＡ以上であった。また、缶壁面をＳＥＭにて観察したところ、樹脂皮膜にすじ状の亀裂が確認された。
なお、図３（ｃ）は、比較例における立体形状を有した樹脂被覆缶の缶壁面のＳＥＭ像である。
When ERV was measured about the resin-coated can which has this three-dimensional shape, the electric current value was 120 mA or more. Moreover, when the can wall surface was observed by SEM, a streak-like crack was confirmed in the resin film.
FIG. 3C is an SEM image of the can wall surface of the resin-coated can having a three-dimensional shape in the comparative example.
以上、本発明について、好ましい実施形態を示して説明したが、本発明は、前述した実施形態にのみ限定されるものではなく、本発明の範囲で種々の変更実施が可能であることは言うまでもない。 Although the present invention has been described with reference to the preferred embodiment, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. .
例えば、前述した実施形態では、素缶１０ａに縮径絞り加工を施しているが、本発明において、少なくとも立体加飾加工を施そうとする部位を缶内方に変形させるための手段は特に制限されない。例えば、エンボス加工などによってもよい。 For example, in the above-described embodiment, the raw can 10a is reduced in diameter. However, in the present invention, a means for deforming at least a portion to be subjected to the three-dimensional decoration process inward to the can is particularly limited. Not. For example, embossing may be used.
以上説明したように、本発明は、樹脂被覆層の損傷などを抑制しつつ、立体加飾加工が施されて凹凸形状が付与された樹脂被覆缶を提供する。 As described above, the present invention provides a resin-coated can that has been subjected to a three-dimensional decorating process and is provided with an uneven shape while suppressing damage to the resin coating layer.
１ 樹脂被覆缶
１０ 有底胴缶
１０ａ 素缶
１１ 缶底
１２ 張出部
２０ 缶蓋
DESCRIPTION OF SYMBOLS 1 Resin-coated can 10 Bottomed body can 10a Element can 11 Can bottom 12 Overhang part 20 Can lid
Claims (10)
前記樹脂被覆金属素材に絞り・しごき加工を施して有底筒状の素缶を成形した後に、少なくとも立体加飾加工を施そうとする部位を缶内方に変形させてから、当該部位の一部、又は全部を缶外方に張り出させて缶壁面に凹凸を形成することを特徴とする樹脂被覆缶の製造方法。 In forming a resin-coated metal material in which a resin coating layer is laminated into a can shape, a method for producing a resin-coated can which is subjected to three-dimensional decoration processing,
After forming the bottomed cylindrical uncoated can by drawing and ironing the resin-coated metal material, at least the part to be subjected to the three-dimensional decoration process is deformed inward of the can, A method for producing a resin-coated can, characterized in that a portion or the whole is projected outwardly to form irregularities on a can wall surface.
当該部位を、前記樹脂被覆層を形成する樹脂の溶融開始温度乃至融点となる温度に加熱して、前記樹脂被覆層を形成する樹脂の金属素材への密着性を向上させる請求項１〜５のいずれか１項に記載の樹脂被覆缶の製造方法。 Prior to transforming at least the part to be subjected to three-dimensional decoration processing into the inside of the can,
The said site | part is heated to the temperature used as the melting start temperature thru | or melting | fusing point of resin which forms the said resin coating layer, and the adhesiveness to the metal raw material of resin which forms the said resin coating layer is improved. The manufacturing method of the resin-coated can of any one of Claims 1.
前記樹脂被覆金属素材を缶形状に成形加工した後の缶壁面において、
前記樹脂被覆層を除いた金属板部分の最小肉厚が０．１〜０．２ｍｍ、
前記樹脂被覆層の厚みが２〜５０μｍとなるようにする請求項１〜６のいずれか１項に記載の樹脂被覆缶の製造方法。 The resin-coated metal material is formed by laminating the resin coating layer on an aluminum alloy plate,
In the wall surface of the can after the resin-coated metal material is molded into a can shape,
The minimum thickness of the metal plate portion excluding the resin coating layer is 0.1 to 0.2 mm,
The method for producing a resin-coated can according to any one of claims 1 to 6, wherein the thickness of the resin coating layer is 2 to 50 µm.
少なくとも立体加飾加工が施された部位における前記樹脂被覆層を形成する樹脂の分子鎖が、缶高さ方向に延伸配向されているとともに、
前記樹脂被覆層の被覆度が、ＥＲＶ換算で、０〜１２０ｍＡであることを特徴とする樹脂被覆缶。 When molding a resin-coated metal material in which a resin coating layer is formed into a can shape, a three-dimensional decoration process is performed in combination with a resin-coated can in which irregularities are formed on the can wall surface,
The molecular chain of the resin that forms the resin coating layer in at least the three-dimensional decoration is stretched and oriented in the can height direction,
The resin coating can characterized in that the coating degree of the resin coating layer is 0 to 120 mA in terms of ERV.
前記樹脂被覆金属素材を缶形状に成形加工した後の缶壁面において、
前記樹脂被覆層を除いた金属板部分の最小肉厚が０．１〜０．２ｍｍ、
前記樹脂被覆層の厚みが２〜５０μｍとされた請求項８〜９のいずれか１項に記載の樹脂被覆缶。 The resin-coated metal material is formed by laminating the resin coating layer on a metal plate made of an aluminum alloy,
In the wall surface of the can after the resin-coated metal material is molded into a can shape,
The minimum thickness of the metal plate portion excluding the resin coating layer is 0.1 to 0.2 mm,
The resin-coated can according to any one of claims 8 to 9, wherein the resin coating layer has a thickness of 2 to 50 µm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006259134A JP5125044B2 (en) | 2006-09-25 | 2006-09-25 | Method for producing resin-coated can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006259134A JP5125044B2 (en) | 2006-09-25 | 2006-09-25 | Method for producing resin-coated can |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008073759A true JP2008073759A (en) | 2008-04-03 |
| JP5125044B2 JP5125044B2 (en) | 2013-01-23 |
Family
ID=39346354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006259134A Active JP5125044B2 (en) | 2006-09-25 | 2006-09-25 | Method for producing resin-coated can |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5125044B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009298428A (en) * | 2008-06-12 | 2009-12-24 | Showa Aluminum Kan Kk | Metal can |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07242226A (en) * | 1994-03-07 | 1995-09-19 | Kishimoto Akira | Deformed seamless can and production method thereof |
| JPH07266496A (en) * | 1994-02-14 | 1995-10-17 | Toyo Kohan Co Ltd | Resin-clad aluminum plate for can to be drawn by dry ironing |
| JPH107122A (en) * | 1996-06-19 | 1998-01-13 | Kishimoto Akira | Seamless can and manufacture thereof |
| JPH1191773A (en) * | 1997-09-18 | 1999-04-06 | Kishimoto Akira | Coated aluminum seamless can, and its manufacture |
| JPH11314123A (en) * | 1998-04-30 | 1999-11-16 | Daiwa Can Co Ltd | Manufacture of resin coated seamless aluminum can |
| JPH11314122A (en) * | 1998-04-30 | 1999-11-16 | Daiwa Can Co Ltd | Manufacture of resin coated seamless aluminum can |
| JP2000006967A (en) * | 1998-06-26 | 2000-01-11 | Daiwa Can Co Ltd | Polyester resin-coated aluminum seamless can and manufacture thereof |
| JP2001353811A (en) * | 2000-06-12 | 2001-12-25 | Toyo Seikan Kaisha Ltd | Resin-coated seamless can |
| WO2004113181A1 (en) * | 2003-06-23 | 2004-12-29 | Toyo Seikan Kaisha, Ltd. | Resin-coated aluminum seamless can body having excellent body burst resistance and flange crack resistance in distribution |
| WO2005014198A1 (en) * | 2003-08-08 | 2005-02-17 | Toyo Seikan Kaisha, Ltd. | Bulge can, method of manufacturing bulge can, and apparatus of manufacturing bulge can |
| JP2005178048A (en) * | 2003-12-16 | 2005-07-07 | Daiwa Can Co Ltd | Polyester film coated metal sheet, its manufacturing method and polyester film coated metal can |
| JP2005342911A (en) * | 2004-05-31 | 2005-12-15 | Jfe Steel Kk | Resin coating metal sheet for container |
-
2006
- 2006-09-25 JP JP2006259134A patent/JP5125044B2/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07266496A (en) * | 1994-02-14 | 1995-10-17 | Toyo Kohan Co Ltd | Resin-clad aluminum plate for can to be drawn by dry ironing |
| JPH07242226A (en) * | 1994-03-07 | 1995-09-19 | Kishimoto Akira | Deformed seamless can and production method thereof |
| JPH107122A (en) * | 1996-06-19 | 1998-01-13 | Kishimoto Akira | Seamless can and manufacture thereof |
| JPH1191773A (en) * | 1997-09-18 | 1999-04-06 | Kishimoto Akira | Coated aluminum seamless can, and its manufacture |
| JPH11314123A (en) * | 1998-04-30 | 1999-11-16 | Daiwa Can Co Ltd | Manufacture of resin coated seamless aluminum can |
| JPH11314122A (en) * | 1998-04-30 | 1999-11-16 | Daiwa Can Co Ltd | Manufacture of resin coated seamless aluminum can |
| JP2000006967A (en) * | 1998-06-26 | 2000-01-11 | Daiwa Can Co Ltd | Polyester resin-coated aluminum seamless can and manufacture thereof |
| JP2001353811A (en) * | 2000-06-12 | 2001-12-25 | Toyo Seikan Kaisha Ltd | Resin-coated seamless can |
| WO2004113181A1 (en) * | 2003-06-23 | 2004-12-29 | Toyo Seikan Kaisha, Ltd. | Resin-coated aluminum seamless can body having excellent body burst resistance and flange crack resistance in distribution |
| WO2005014198A1 (en) * | 2003-08-08 | 2005-02-17 | Toyo Seikan Kaisha, Ltd. | Bulge can, method of manufacturing bulge can, and apparatus of manufacturing bulge can |
| JP2005178048A (en) * | 2003-12-16 | 2005-07-07 | Daiwa Can Co Ltd | Polyester film coated metal sheet, its manufacturing method and polyester film coated metal can |
| JP2005342911A (en) * | 2004-05-31 | 2005-12-15 | Jfe Steel Kk | Resin coating metal sheet for container |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009298428A (en) * | 2008-06-12 | 2009-12-24 | Showa Aluminum Kan Kk | Metal can |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5125044B2 (en) | 2013-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5534354B2 (en) | Resin-coated aluminum seamless can body with excellent fracture resistance and flange crack resistance during distribution | |
| KR0146355B1 (en) | Process for production of covered deep-drawn can | |
| WO2006123666A1 (en) | Three-piece square can and method of manufacturing the same | |
| US20150210431A1 (en) | Resin coated metal sheet for using drawn and ironed cans, drawn and ironed can, and method of manufacturing drawn and ironed can | |
| JP2004148324A (en) | Method for manufacturing shear spun can made of resin coated metal | |
| JPH01192545A (en) | Laminated steel plate for can excellent in processability and corrosion resistance | |
| WO2018221385A1 (en) | Resin-coated metal plate for container | |
| JP5125044B2 (en) | Method for producing resin-coated can | |
| JP2007045507A (en) | Two-piece can, its production method and sheet steel for the same | |
| JP2007284141A (en) | Resin coated can and its manufacturing process | |
| JP4622737B2 (en) | Laminated steel sheet for 2-piece can and 2-piece laminated can | |
| JP4583239B2 (en) | Seamless aluminum square can | |
| JPH02263523A (en) | Manufacture of thin-walled and deep-drain can | |
| JPH0598465A (en) | Manufacture of thinned resin coated tinned steel sheet for deep drawing excellent in working corrosion resistance | |
| JP6244729B2 (en) | Resin-coated seamless aluminum can | |
| WO2000058087A1 (en) | Metal plate coated with polyester resin, and can using the same | |
| JPH0631362A (en) | Manufacture of multi-drawing can made of laminated steel sheet with high adhesion | |
| JPH0616741Y2 (en) | Deep drawn can | |
| JPH0616739Y2 (en) | Coated deep drawing can | |
| JPH0616740Y2 (en) | Coated deep drawing aluminum can | |
| JP3917766B2 (en) | Thermoplastic resin laminated steel sheet for containers with excellent water-washing and corrosion resistance | |
| JP2002113809A (en) | Resin film laminate plating steel sheet, can using the same and method for manufacturing resin film laminate plating steel sheet | |
| JP2004043966A (en) | Seamless aluminum can body | |
| JP2003063519A (en) | Resin-coated seamless can | |
| JP4235794B2 (en) | Inner resin coated aluminum squeezed iron can |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20090819 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120228 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120426 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20121002 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20121015 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 5125044 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151109 Year of fee payment: 3 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151109 Year of fee payment: 3 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |