JP5144885B2 - Heat resistant coating material and lid material using the coating material - Google Patents
Heat resistant coating material and lid material using the coating material Download PDFInfo
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- JP5144885B2 JP5144885B2 JP2005283897A JP2005283897A JP5144885B2 JP 5144885 B2 JP5144885 B2 JP 5144885B2 JP 2005283897 A JP2005283897 A JP 2005283897A JP 2005283897 A JP2005283897 A JP 2005283897A JP 5144885 B2 JP5144885 B2 JP 5144885B2
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- 239000011248 coating agent Substances 0.000 title claims description 40
- 239000000463 material Substances 0.000 title claims description 33
- 238000000576 coating method Methods 0.000 title claims description 27
- 239000011888 foil Substances 0.000 claims description 14
- 229920006015 heat resistant resin Polymers 0.000 claims description 13
- 229920000877 Melamine resin Polymers 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000004640 Melamine resin Substances 0.000 claims description 10
- 239000002985 plastic film Substances 0.000 claims description 10
- 229920006255 plastic film Polymers 0.000 claims description 9
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- 239000000020 Nitrocellulose Substances 0.000 claims description 7
- 150000007974 melamines Chemical class 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229920001220 nitrocellulos Polymers 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 7
- 229920001225 polyester resin Polymers 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 229920001187 thermosetting polymer Polymers 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 5
- 239000011342 resin composition Substances 0.000 claims description 5
- 150000003672 ureas Chemical class 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000002932 luster Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000976 ink Substances 0.000 description 34
- 239000000047 product Substances 0.000 description 8
- 208000023514 Barrett esophagus Diseases 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000002845 discoloration Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 239000006224 matting agent Substances 0.000 description 2
- -1 methylol group Chemical group 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000003973 paint Substances 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
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 150000007519 polyprotic acids Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Wrappers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Description
本発明は、包装製品の蓋材に用いる耐熱性被覆剤およびそれを用いた蓋材に関する。詳しくは、種々の基材表面に対し密着性が良好で、かつ、その皮膜表面に印刷されるインキとの密着性が良好なＰＴＰ（プレス・スルー・パック）包装体の蓋材に用いる耐熱性被覆剤およびそれを用いた蓋材に関する。 The present invention relates to a heat-resistant coating material used for a lid of a packaged product and a lid using the same. Specifically, heat resistance used for lids of PTP (press-through-pack) packages with good adhesion to various substrate surfaces and good adhesion to the ink printed on the coating surface The present invention relates to a coating material and a lid material using the same.
従来、医薬品の包装に用いられるＰＴＰ包装体などの包装製品は、内容物を格納するための容器の部分となるポケットを成形したブラスチックシートの加工成形体と、その容器口部を密閉するための蓋材との２つの部分からなる。 Conventionally, a packaged product such as a PTP package used for packaging pharmaceuticals is used to seal a plastic sheet processed molded body in which a pocket serving as a container part for storing contents and a container mouth portion thereof are sealed. It consists of two parts with the lid material.
ＰＴＰ包装体の蓋材は、アルミニウム箔によって代表される金属箔あるいはアルミニウム蒸着ポリエステルフィルムによって代表される金属蒸着プラスチックフィルムまたは紙からなる基材と、その基材の一面（内側となる面）に設けたプラスチック製容器（加工成形体）に対して加熱圧着される熱封緘性樹脂層とから構成されている。また、基材の他面（外側となる面）には、その製品名などの文字やデザイン等を印刷した印刷層と、その印刷層を保護するための耐熱性樹脂層とが設けられている。なお、耐熱性樹脂層あるいは耐熱性被覆剤の耐熱性とは、加工時に、高温処理や加熱加工を受けたり、高温物体に接触したりしても、ブロッキングや変褪色を起こさない状態を表わす。 The cover of the PTP package is provided on a base made of a metal foil represented by aluminum foil or a metal-deposited plastic film represented by aluminum-deposited polyester film or paper, and one side (the inner side) of the base. And a heat-sealing resin layer that is heat-pressed against a plastic container (processed molded body). In addition, on the other surface (surface on the outside) of the base material, a printed layer on which characters such as a product name and a design are printed, and a heat-resistant resin layer for protecting the printed layer are provided. . Note that the heat resistance of the heat-resistant resin layer or the heat-resistant coating agent represents a state in which blocking or discoloration does not occur even when subjected to high-temperature treatment or heat-processing or in contact with a high-temperature object during processing.
本出願人は、このＰＴＰ包装体の蓋材に用いる耐熱性被覆剤であって、蓋材の金属の光沢面を有する下地に塗布することによってその光沢面を艶消しする艶消し塗料を提供している。具体的には、基材の表面の反射を防止するため、艶消し効果を与えるシリカを混入した耐熱性被覆剤（塗料）を提供している（特許文献１）。 The present applicant provides a matte paint that is a heat-resistant coating used for the lid material of the PTP package and that mattes the glossy surface of the lid material when applied to a base having a metal glossy surface. ing. Specifically, in order to prevent reflection of the surface of the base material, a heat-resistant coating material (paint) mixed with silica giving a matting effect is provided (Patent Document 1).
このような蓋材を製造するには、通常、金属箔、金属蒸着した紙、あるいは、プラスチックフィルムなどの基材を用意し、その基材の片面（外側となる面）に文字やデザインを印刷する。このとき、内側となる面にも文字等を印刷してもよい。そして、文字またはデザイン等が印刷された基材の外側となる面に、耐熱性被覆剤を塗工することによって耐熱性樹脂層を形成させる。さらに、基材の成形加工体と接着させる内側の面に、無色または着色した熱封緘性接着剤を塗布することによって熱封緘性樹脂層を形成させる。 In order to manufacture such a lid, usually a base material such as metal foil, metal-deposited paper, or plastic film is prepared, and characters and designs are printed on one side (outer side) of the base material. To do. At this time, characters or the like may be printed on the inner surface. And a heat resistant resin layer is formed by applying a heat resistant coating agent to the surface which becomes the outer side of the base material on which the character or the design was printed. Furthermore, a heat-sealing resin layer is formed by applying a colorless or colored heat-sealing adhesive to the inner surface to be bonded to the molded processed body of the substrate.
これらの包装製品には、内容物に対する保証、責任の所在および明確化などの社会的要求、あるいは、諸種の規制が定められている。そのため、蓋材外面（外側となる面）には、製品等のデザインなどの他に、内容物の組成、取扱注意事項、使用方法、更に生産者名、生産責任者名および所在地等の情報が細字などによって記載されている。 These packaged products have social requirements such as guarantee of contents, location of responsibility and clarification, or various regulations. Therefore, in addition to the design of the product etc. on the outer surface (outer surface) of the lid material, information such as the composition of the contents, handling precautions, usage, as well as the name of the producer, the name of the person responsible for production and the location It is written in fine characters.
また、蓋材に記載される情報の中には、蓋材を製造した後に印刷する必要のものもある。例えば、記載事項の内、ロット番号、賞味期限等は、内容物を充填した時点から計算される情報であるため、蓋材を製造する段階ではその情報は決まっておらず印刷することができない。この場合、耐熱性樹脂層の上からエンボス加工を施したり、または、さらに印刷したりすることになる。しかし、エンボス加工によって情報を記入する場合、その内容が読みにくいという問題がある。また、有機溶剤を使用した溶剤タイプの印刷インキを用いて耐熱性樹脂層の上に印刷する場合、印刷後の乾燥に時間がかかりすぎて非効率であり、その密着性も弱いという問題がある。 In addition, some of the information described in the lid material needs to be printed after the lid material is manufactured. For example, the lot number, the expiration date, etc. of the description items are information calculated from the time when the contents are filled, so that information is not determined at the stage of manufacturing the lid material and cannot be printed. In this case, embossing is performed from above the heat resistant resin layer, or further printing is performed. However, when information is entered by embossing, there is a problem that the contents are difficult to read. In addition, when printing on a heat-resistant resin layer using a solvent-type printing ink using an organic solvent, there is a problem that drying after printing takes too much time and is inefficient and its adhesion is weak. .
また、印刷インキとして、紫外線を照射することにより液相から固相へ変化する紫外線硬化タイプのインキを使用することが始まっている。この紫外線硬化タイプのインキは、塗膜形成が溶剤タイプに比べて極めて早く効率的である。しかし、このものも、従来の耐熱性樹脂層の上に印刷すると密着性が悪いという欠点がある。 In addition, as a printing ink, use of an ultraviolet curable ink that changes from a liquid phase to a solid phase by irradiation with ultraviolet rays has begun. This UV curable ink is very quick and efficient in forming a coating film compared to the solvent type. However, this also has a drawback that adhesion is poor when printed on a conventional heat-resistant resin layer.
この紫外線インキからなる印刷層と耐熱性樹脂層との密着性が低いのは一般的に次のように考えられている。つまり、紫外線硬化タイプのインキはポリエステル、エポキシ、ポリウレタン等のアクリレートのプレポリマーと光重合開始剤、顔料、助剤類からなり紫外線を照射することによりプレポリマーの末端官能基の重合が瞬間的に進み硬化するものであり、重合した紫外線硬化インキには官能基がほとんど残っていない状態になる。一方、耐熱性樹脂層は、ニトロセルロース、セルロースアセテート、熱硬化性アクリル樹脂等を主成分とし、メラミン樹脂、尿素樹脂で熱硬化させるものが一般的である。そのため、前記重合した紫外線硬化インキ（印刷層）と架橋した耐熱性被覆剤（耐熱性樹脂層）の間に両者を結ぶものが存在せず、両者間の密着が悪い結果となっている。 It is generally considered that the adhesion between the printed layer made of ultraviolet ink and the heat-resistant resin layer is low as follows. In other words, UV curable inks consist of prepolymers of acrylates such as polyester, epoxy, and polyurethane, photopolymerization initiators, pigments and auxiliaries. It progresses and cures, and the polymerized UV curable ink is in a state in which almost no functional groups remain. On the other hand, the heat resistant resin layer is mainly composed of nitrocellulose, cellulose acetate, thermosetting acrylic resin or the like as a main component and thermally cured with melamine resin or urea resin. For this reason, there is no connection between the polymerized ultraviolet curable ink (printing layer) and the crosslinked heat-resistant coating material (heat-resistant resin layer), resulting in poor adhesion between the two.
本発明者等は前記した問題点を鑑みて、紫外線硬化インキを重合することによって形成される皮膜との密着性の良い耐熱性被覆剤からなる耐熱性樹脂層を得るために鋭意研究を重ねた結果、本発明の耐熱性被覆剤を見出したのである。 In view of the above-mentioned problems, the present inventors have conducted extensive research to obtain a heat-resistant resin layer composed of a heat-resistant coating having good adhesion to a film formed by polymerizing an ultraviolet curable ink. As a result, the heat-resistant coating material of the present invention was found.
即ち、本発明の被覆剤は、金属箔または金属光沢を有するプラスチックフィルムまたは
紙からなる基材表面に塗布し、加熱することにより皮膜を形成し、紫外線硬化型インキを印刷するための耐熱性被覆剤であって、ニトロセルロースおよび熱硬化性アクリル樹脂からなる主成分と、アルキル化メラミン樹脂およびアルキル化尿素樹脂からなる硬化剤とを混合した樹脂組成物１００重量部（固形分）に対してポリエステル系樹脂を１０〜４０重量部（固形分）配合したことを特徴としている。
That is, the coating agent of the present invention is applied to a substrate surface made of a metal foil or a plastic film or paper having a metallic luster, heated to form a film, and heat resistant coating for printing ultraviolet curable ink. a agent, the main component consisting of nitrocellulose and thermosetting acrylic resin, the resin composition obtained by mixing a curing agent consisting of alkylated melamine resins and alkylated urea resins 100 parts by weight (solid content) polyester It is characterized by blending 10 to 40 parts by weight (solid content) of a resin.
このような耐熱性被覆剤としては、上記樹脂組成物を有機溶剤に混入し、所定の量の範囲のポリエステル系樹脂と混合したものが好ましい。これにより、所望の機械的、熱的性質を有する塗膜を形成するための耐熱性被覆剤を得ることができる。
As such a heat-resistant coating agent, the above-mentioned resin composition is preferably mixed with an organic solvent and mixed with a polyester resin in a predetermined amount range. Thereby, the heat resistant coating agent for forming the coating film which has a desired mechanical and thermal property can be obtained.
そして、特に、樹脂組成物の配合が固形分を基準として（１）ニトロセルロース１０〜５０重量％、（２）熱硬化性アクリル樹脂１０〜４０重量％、（３）アルキル化メラミン樹脂５〜２０重量％、（４）アルキル化尿素樹脂０〜２０重量％（但し、（１）＋（２）＋（３）＋（４）＝１００重量％である。）であることが好ましい。しかし、ポリエステル系樹脂と所定量の範囲で混合することにより所望の機械的、熱的性質を有する塗膜を形成するものであれば、特に限定されるものではない。 And in particular, the composition of the resin composition is based on solid content (1) 10-50 wt% nitrocellulose, (2) 10-40 wt% thermosetting acrylic resin, (3) alkylated melamine resin 5-20 It is preferable that it is 0 to 20% by weight (provided that (1) + (2) + (3) + (4) = 100% by weight). However, it is not particularly limited as long as it forms a coating film having desired mechanical and thermal properties by mixing with a polyester resin in a predetermined amount.
上述したニトロセルロースとしては、ＲＳタイプ及びＳＳタイプ等の各秒数のものが使用される。このニトロセルロースは主として耐摩耗性と耐熱性を付与し、更に基材表面との密着性にも寄与する。 As the above-mentioned nitrocellulose, those of each type such as RS type and SS type are used. This nitrocellulose mainly imparts wear resistance and heat resistance, and further contributes to adhesion to the substrate surface.
熱硬化性アクリル樹脂としては、一般の市販品はすべて使用可能であり、特にカルボキシル基、ヒドロキシル基、グリシジル基、メチロール基またはアルキルエーテル化メチロール基のようなアミノ樹脂によって架橋し得る官能基を有するものが適当である。熱硬化性アクリル樹脂は塗膜に可撓性及び密着性を付与し耐熱性（加熱黄変性、表面軟化）や耐摩耗性にも貢献する。 As the thermosetting acrylic resin, all commercially available products can be used, and in particular have a functional group that can be cross-linked by an amino resin such as a carboxyl group, a hydroxyl group, a glycidyl group, a methylol group, or an alkyl etherified methylol group. Things are appropriate. The thermosetting acrylic resin imparts flexibility and adhesion to the coating film and contributes to heat resistance (heating yellowing, surface softening) and wear resistance.
アルキル化メラミン樹脂としては、一般の市販品はすべて使用可能であるがメチルエーテル化メラミン樹脂、ブチルエーテル化メラミン樹脂、イソブチルエーテル化メラミン樹脂が望ましい。アルキル化メラミン樹脂は架橋効果を与え耐摩耗性に良好な物性を発揮する。 As the alkylated melamine resin, all commercially available products can be used, but methyl etherified melamine resin, butyl etherified melamine resin, and isobutyl etherified melamine resin are desirable. The alkylated melamine resin gives a cross-linking effect and exhibits good physical properties in terms of wear resistance.
アルキル化尿素樹脂としては、一般の市販品はすべて使用可能であるがブチルエーテル化尿素樹脂、イソブチルエーテル化尿素樹脂が望ましい。アルキル化尿素樹脂は本発明には必須でないが低温短時間での効果を要求される場合にはアルキル化メラミン樹脂と併用する事により非常に効果を発揮するものである。 As the alkylated urea resin, all commercially available products can be used, but butyl etherified urea resins and isobutyl etherified urea resins are desirable. The alkylated urea resin is not essential for the present invention, but when an effect at a low temperature in a short time is required, it is very effective when used in combination with the alkylated melamine resin.
本発明に使用されるポリエステル系樹脂としては、アジピン酸、フタル酸、安息香酸等の飽和多塩基酸と多価アルコールとのエステル結合により得られる一般の市販品が使用可能であるがアジピン酸エステルの使用が望ましい。また、芳香族ポリエステルを基本骨格とし、ウレタン基を持ったポリエステルポリウレタンの使用も望ましい。ポリエステル系樹脂は塗膜に柔軟性を与え、紫外線硬化インキとの密着に効果を発揮する。 As the polyester-based resin used in the present invention, a general commercial product obtained by ester bond of a saturated polybasic acid such as adipic acid, phthalic acid or benzoic acid and a polyhydric alcohol can be used. Is desirable. It is also desirable to use a polyester polyurethane having an aromatic polyester as a basic skeleton and a urethane group. The polyester resin imparts flexibility to the coating film and exerts an effect on adhesion to the ultraviolet curable ink.
本発明の被覆剤において、架橋反応をさらに促進させるための触媒を使用しても良いが、特にリン酸やパラトルエンスルホン酸のような有機、無機の酸性触媒が優れた効果を示す。また、本発明の被覆剤において、一般の被覆剤に使用される、顔料、艶消し剤、あるいは、充填剤の使用は自由であり、分散剤、レベリング剤、滑剤等の添加剤を任意に配合しても差し支えは無い。 In the coating agent of the present invention, a catalyst for further accelerating the crosslinking reaction may be used. In particular, organic and inorganic acidic catalysts such as phosphoric acid and paratoluenesulfonic acid exhibit excellent effects. Further, in the coating agent of the present invention, the use of pigments, matting agents, or fillers used in general coating agents is free, and additives such as dispersants, leveling agents, and lubricants are optionally added. There is no problem.
本発明の蓋材は、金属箔または金属光沢を有するプラスチックフィルムからなる基材と、その一方の表面に本発明の耐熱性被覆剤を塗布し、加熱することによって形成される耐熱性樹脂層と、その表面に印刷される紫外線硬化型インキからなる印刷層とからなることを特徴としている。
本発明の蓋材に用いられる紫外線硬化型インキは、骨格がポリエステルであるポリエステル系の樹脂であり、末端にアクリル分子を備えている樹脂を主成分とし、顔料、艶消し剤等の添加剤が加えられたインキを用いるのが好ましい。
The lid material of the present invention comprises a substrate made of a metal foil or a plastic film having a metallic luster, a heat resistant resin layer formed by applying the heat resistant coating agent of the present invention to one surface and heating , And a printed layer made of ultraviolet curable ink printed on the surface thereof.
The ultraviolet curable ink used for the lid material of the present invention is a polyester-based resin whose skeleton is polyester, the resin having an acrylic molecule at the end as a main component, and additives such as pigments and matting agents. It is preferred to use the added ink.
このように本発明の耐熱被覆剤は、金属箔あるいは金属蒸着した紙或いはプラスチックフィルムまたは紙の基材の表面に塗布することにより、加工時に高温処理や加熱加工を受けたり、高温物体に接触したりしても、ブロッキングや変褪色を起こさず、金属箔あるいは金属蒸着した紙或いはプラスチックフィルムの基材表面に対し密着性の良好な皮膜を形成する。また、この皮膜表面に紫外線硬化型インキを印刷しても、その印刷層との密着性が良好である。 As described above, the heat-resistant coating material of the present invention is applied to the surface of a metal foil or metal-deposited paper or plastic film or paper base material, so that it can be subjected to high temperature treatment or heat processing during processing, or contact a high temperature object. Even if it does, it does not raise | generate blocking and discoloration, and forms a film | membrane with favorable adhesiveness with respect to the base material surface of metal foil or metal vapor-deposited paper or a plastic film. Further, even when ultraviolet curable ink is printed on the surface of the film, the adhesion with the printed layer is good.
さらに、本発明の耐熱性被覆剤を用いた蓋材は、金属箔または金属光沢を有するプラスチックフィルムまたは紙からなる基材と、その一方の表面に前述の耐熱性被覆剤を塗布し、加熱することによって形成される耐熱性樹脂層と、その表面に印刷される紫外線硬化型インキからなる印刷層とからなるＰＴＰ包装体用のものであるため、印刷層が剥離しにくい。 Furthermore, the lid material using the heat-resistant coating material of the present invention is applied by applying the above-mentioned heat-resistant coating material on one surface of a base material made of a metal foil or a plastic film or paper having a metallic luster and heating. The printed layer is difficult to peel off because it is for a PTP package comprising a heat-resistant resin layer formed by this and a printed layer made of ultraviolet curable ink printed on the surface thereof.
［実施例１］
表１の実施例欄に記載した配合に基づいて得られた実施例１の耐熱性被覆剤をバーコーターにて厚さ２０μｍの硬質アルミニウム箔の艶面に乾燥塗布量が約１．５ｇ／ｍ２となるように塗布し、雰囲気温度１８０℃の乾燥炉中で１０秒加熱乾燥させて皮膜を形成した。得られた皮膜にヒートシーラーを、温度１９０℃、圧力０．５４ＭＰａ、時間１秒圧着させたが、皮膜表面にブロッキングや変褪色は起こらなかった。
[Example 1]
The dry coating amount of the heat resistant coating material of Example 1 obtained based on the formulation described in the Example column of Table 1 is about 1.5 g / m on the glossy surface of a hard aluminum foil having a thickness of 20 μm with a bar coater. 2 was applied and dried in a drying oven at an atmospheric temperature of 180 ° C. for 10 seconds to form a film. A heat sealer was pressure-bonded to the obtained film at a temperature of 190 ° C., a pressure of 0.54 MPa, for 1 second, but no blocking or discoloration occurred on the film surface.
次に、得られた皮膜に大日本インキ化学（株）製紫外線硬化型インキダイキュアＲＴ−８をバーコーターにて厚さ約０．５ｇ／ｍ２となるように塗布し、日本電池株式会社製ＵＶ照射装置の紫外線ランプを１２０ｗ／ｃｍの出力で２秒照射し、インキを硬化させた。 Next, Dainippon Ink Chemical Co., Ltd. UV curable ink dicure RT-8 was applied to the resulting film with a bar coater to a thickness of about 0.5 g / m 2. The ink was cured by irradiating an ultraviolet lamp of a UV irradiation device made at a power of 120 w / cm for 2 seconds.
前記皮膜に紫外線硬化型インキを塗布し硬化させた硬質アルミニウム箔を塗布面を上にしてガラス板におき、塗布面にニチバン株式会社製１８ｍｍ幅セロテープ（登録商標）を長さ約１５ｃｍに切ったものを乗せ、親指の腹で強く３回押し付け密着させた後、左手で塗布面を押さえ右手でセロテープの端を持ち、１８０度の角度でセロテープを強く引っ張り紫外線硬化型インキの剥離度合いを見た。その結果、セロテープにはインキが剥がれた形跡は無く、インキは全て皮膜表面に残っていた。 A hard aluminum foil coated with UV curable ink and cured on the film was placed on a glass plate with the coating surface up, and Nichiban Co., Ltd. 18 mm wide cello tape (registered trademark) was cut to a length of about 15 cm on the coating surface. Place the object on the thumb and press it tightly three times, then press the application surface with your left hand, hold the end of the cello tape with your right hand, and pull the cello tape strongly at an angle of 180 degrees to see the degree of peeling of the UV-curable ink. . As a result, there was no evidence of the ink peeling off on the cello tape, and all the ink remained on the film surface.
［比較例１］
表１の比較例欄に記載された配合に基づいて得られた比較例１の耐熱性被覆剤をバーコーターにて厚さ２０μｍの硬質アルミニウム箔の艶面に乾燥塗布量が約１．５ｇ／ｍ２となるように塗布し、雰囲気温度１８０℃の乾燥炉中で１０秒加熱乾燥させて皮膜を作製した。得られた皮膜にヒートシーラーを、温度１９０℃、圧力０．５４ＭＰａ、時間１秒圧着させたが、被膜表面にブロッキングや変褪色は起こらなかった。
[Comparative Example 1]
The heat-resistant coating material of Comparative Example 1 obtained based on the formulation described in the Comparative Example column of Table 1 was applied to a glossy surface of a hard aluminum foil having a thickness of 20 μm by a bar coater with a dry coating amount of about 1.5 g / The film was applied to m 2 and dried by heating in a drying furnace at an atmospheric temperature of 180 ° C. for 10 seconds to produce a film. A heat sealer was pressure-bonded to the resulting film at a temperature of 190 ° C., a pressure of 0.54 MPa, and a time of 1 second, but no blocking or discoloration occurred on the surface of the film.
次に、得られた皮膜に大日本インキ化学（株）製紫外線硬化型インキダイキュアＲＴ−８をバーコーターにて厚さ約０．５ｇ／ｍ２となるように塗布し日本電池株式会社製ＵＶ照射装置の紫外線ランプを１２０ｗ／ｃｍの出力で２秒照射しインキを硬化させた。 Next, Dainippon Ink Chemical Co., Ltd. UV curable ink dicure RT-8 was applied to the resulting film with a bar coater to a thickness of about 0.5 g / m 2 and manufactured by Nippon Battery Co., Ltd. The ink was cured by irradiating the UV lamp of the UV irradiation device with an output of 120 w / cm for 2 seconds.
前記皮膜に紫外線硬化型インキを塗布し硬化させた硬質アルミニウム箔を塗布面を上にしてガラス板に置き、塗布面にニチバン株式会社製１８ｍｍ幅セロテープを長さ約１５ｃｍに切ったものを乗せ親指の腹で強く３回押し付け密着させた後、左手で塗布面を押さえ右手でセロテープの端を持ち、１８０度の角度でセロテープを強く引っ張り紫外線硬化型インキの剥離度合いを見た。その結果、セロテープにはインキが付着し、皮膜表面に塗布された紫外線硬化インキは全て剥がれていた。 A hard aluminum foil coated with UV curable ink and cured on the film is placed on a glass plate with the coating surface facing up, and a thumb cut with Nichiban Co., Ltd. 18mm wide tape is cut into a length of about 15cm. After pressing firmly 3 times on the stomach, the coated surface was held with the left hand, the edge of the cello tape was held with the right hand, and the cello tape was pulled strongly at an angle of 180 ° to observe the degree of peeling of the UV curable ink. As a result, the ink adhered to the cello tape, and all the ultraviolet curable ink applied to the surface of the film was peeled off.
注１．原料配合組成を示す数字は重量部である。
注２．原料配合組成表中、括弧内の数字は固形分重量に換算した値である。
※１．ダイセル化学工業株式会社製 ７０％溶液
※２．大日本インキ化学工業株式会社製アクリディックＡ−４０５、５０％溶液
※３．大日本インキ化学工業株式会社製スーパーベッカミンＰ−１３８、６０％溶液
※４．大日本インキ化学工業株式会社製スーパーベッカミンＪ−８２０−６０Ａ、６０％溶液
※５．旭電化工業株式会社製アデカサイザーＰＮ−３５０
※６．東洋紡績株式会社製バイロンＵＲ−３２１０、３０％溶液
※７．試薬一級
Note 1. The number indicating the raw material composition is part by weight.
Note 2. In the raw material composition table, the numbers in parentheses are values converted to solid content weights.
* 1. 70% solution manufactured by Daicel Chemical Industries, Ltd. * 2. Dainippon Ink & Chemicals, Inc. Acrydic A-405, 50% solution * 3. Dainippon Ink & Chemicals, Inc. Super Becamine P-138, 60% solution * 4. Dainippon Ink & Chemicals, Inc. Super Becamine J-820-60A, 60% solution * 5. Asahi Denka Kogyo Co., Ltd. Adeka Sizer PN-350
* 6. Byron UR-3210 manufactured by Toyobo Co., Ltd., 30% solution * 7. First grade reagent
Claims (4)
ニトロセルロースおよび熱硬化性アクリル樹脂からなる主成分と、アルキル化メラミン樹脂およびアルキル化尿素樹脂からなる硬化剤とを混合した樹脂組成物１００重量部（固形分）に対してポリエステル系樹脂を１０〜４０重量部（固形分）配合した耐熱性被覆剤。 A heat-resistant coating agent for printing a UV-curable ink by applying a metal foil or a metallic glossy plastic film or paper to a substrate surface to form a film by heating and printing .
A main component consisting of nitrocellulose and thermosetting acrylic resins, alkylated melamine resin and 100 parts by weight of the resin composition obtained by mixing a curing agent consisting of alkylated urea resins (solids) with respect to the polyester resin 10 A heat resistant coating compounded with 40 parts by weight (solid content).
請求項１記載の耐熱性被覆剤。The heat resistant coating agent according to claim 1.
請求項１記載の耐熱性被覆剤。The heat resistant coating agent according to claim 1.
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| JPS62125881A (en) * | 1985-11-25 | 1987-06-08 | Showa Alum Corp | Production of foil for press-through packaging |
| JPS63295679A (en) * | 1987-05-26 | 1988-12-02 | Reader:Kk | Heat-resistant mat coating agent |
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