JPH0336006A - Vessel with gas barrier property - Google Patents
Vessel with gas barrier propertyInfo
- Publication number
- JPH0336006A JPH0336006A JP1171597A JP17159789A JPH0336006A JP H0336006 A JPH0336006 A JP H0336006A JP 1171597 A JP1171597 A JP 1171597A JP 17159789 A JP17159789 A JP 17159789A JP H0336006 A JPH0336006 A JP H0336006A
- Authority
- JP
- Japan
- Prior art keywords
- vinylidene chloride
- chloride copolymer
- gas barrier
- ink
- printing
- 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.)
- Pending
Links
- 230000004888 barrier function Effects 0.000 title claims abstract description 35
- 229920001577 copolymer Polymers 0.000 claims abstract description 40
- 229920005989 resin Polymers 0.000 claims abstract description 27
- 239000011347 resin Substances 0.000 claims abstract description 27
- 238000007639 printing Methods 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 238000003851 corona treatment Methods 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 abstract description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 239000000178 monomer Substances 0.000 abstract description 6
- 239000002991 molded plastic Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 29
- -1 polypropylene Polymers 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000004793 Polystyrene Substances 0.000 description 6
- 238000007645 offset printing Methods 0.000 description 6
- 230000035699 permeability Effects 0.000 description 6
- 229920002223 polystyrene Polymers 0.000 description 6
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 5
- 238000004040 coloring Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 5
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
- B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
- B65D1/28—Thin-walled containers, e.g. formed by deep-drawing operations formed of laminated material
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はガスバリヤ性に優れた射出成形容器に関し、特
に印刷を施した際の外観が良好で、ガスバリヤ性に優れ
た射出成形容器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an injection molded container with excellent gas barrier properties, and particularly to an injection molded container with a good appearance when printed and excellent gas barrier properties.
〔従来の技術及び発明が解決しようとする課題〕プラス
チック製の射出成形容器は、軽量で安価であることから
、ガラスびんに代わり、飲料容器の分野において、その
使用頻度が高まっている。[Prior Art and Problems to be Solved by the Invention] Plastic injection molded containers are being used more frequently in the field of beverage containers instead of glass bottles because they are lightweight and inexpensive.
しかし、従来から射出成形樹脂としてポリプロピレン、
ポリエチレンテレフタレート、ホリスチレン等を用いて
、飲料容器形状に射出成形しており、こういった樹脂は
酸素を透過しやすく、このため長期間の保存を目的とす
る容器にはむかない、という問題があった。However, polypropylene has traditionally been used as injection molding resin.
Polyethylene terephthalate, holistyrene, etc. are used to injection mold the beverage container shape, but these resins are easily permeable to oxygen, which makes them unsuitable for containers intended for long-term storage. .
そこで、ガスバリヤ性に優れた塩化ビニリデン系共重合
体を前述の射出成形容器表面に塗布し、ガスバリヤ性を
付与した容器が提案されている。Therefore, a container has been proposed in which a vinylidene chloride copolymer having excellent gas barrier properties is coated on the surface of the above-mentioned injection molded container to impart gas barrier properties.
しかし、前記射出成形容器は、前記塩化ビニリデン系共
重合体との濡れ性が良くないうえに、印刷面がマット調
になったり、ピンホール状の欠陥が生じたりするという
問題があった。さらに、前記塩化ビニリデン系共重合体
は酸性が強いため、印刷に用いる色材が変色したり、塩
化ビニリデン系共重合体層に色材がブリードアウトし、
印刷が滲んだりしやすいなどの問題もあった。However, the injection molded containers have problems in that not only do they have poor wettability with the vinylidene chloride copolymer, but also the printed surface becomes matte and pinhole-like defects occur. Furthermore, since the vinylidene chloride copolymer is highly acidic, the coloring material used for printing may change color, or the coloring material may bleed out into the vinylidene chloride copolymer layer.
There were also problems such as the printing being easily smudged.
以上の通り、従来のガスバリヤ性射出戒形容器は印刷を
施した際の外観が良好ではなかった。As mentioned above, the conventional gas barrier injection molded containers did not have a good appearance when printed.
従って本発明の目的は、このような従来の問題点を解決
することで、ガスバリヤ性を有し、かつ印刷が明瞭で外
観の良好なガスバリヤ性容器を提供することである。Therefore, an object of the present invention is to provide a gas barrier container that has gas barrier properties, has clear printing, and has a good appearance by solving these conventional problems.
上記課題に鑑み鋭意研究の結果、本発明者は、印刷を施
した射出成形容器の外側に塩化ビニリデン系共重合体層
を有するガスバリヤ性容器の印刷面と塩化ビニリデン系
共重合体層との間に印刷インクと同種のメジュームを印
刷によりコーティングした後、コロナ処理を施してなる
透明性樹脂層を設けることにより、塩化ビニリデン系共
重合体層の接着性を向上するとともに、印刷面を明瞭に
することができることを発見し、本発明に想到した。In view of the above problems, as a result of intensive research, the present inventor has discovered that the gap between the printed surface and the vinylidene chloride copolymer layer of a gas barrier container has a vinylidene chloride copolymer layer on the outside of the printed injection molded container. A transparent resin layer is coated with the same type of printing ink and then subjected to corona treatment to improve the adhesion of the vinylidene chloride copolymer layer and make the printed surface clearer. They discovered that it is possible to do this, and came up with the present invention.
すなわち、本発明のガスバリヤ性容器は、印刷を施した
射出成形容器の外側に、塩化ビニリデン系共重合体層を
有するもので、印刷面と前記塩化ビニリデン系共重合体
層との間に、前記印刷に用いたインクのメジュームを印
刷によりコーティングした後、コーティング面をコロナ
処理して形成される透明性樹脂層を設けたことを特徴と
する。That is, the gas barrier container of the present invention has a vinylidene chloride copolymer layer on the outside of a printed injection molded container, and between the printed surface and the vinylidene chloride copolymer layer, It is characterized by providing a transparent resin layer formed by coating the coated surface by printing with the ink medium used for printing and then subjecting the coated surface to corona treatment.
本発明によれば、射出成形容器の印刷面と、塩化ビニリ
デン系共重合体層との間に、印刷に用いるインキから色
材を除去した透明性のメジュームからなる透明性樹脂層
を設けたことにより、インキが酸性の強い塩化ビニリデ
ン系共重合体に直接接触することがないため、インキの
色材の変色や、塩化ビニリデン系共重合体層にインキが
ブリードアウトして起こる滲み等が生じない。According to the present invention, a transparent resin layer made of a transparent medium obtained by removing the coloring material from the ink used for printing is provided between the printing surface of the injection molded container and the vinylidene chloride-based copolymer layer. Because the ink does not come into direct contact with the highly acidic vinylidene chloride copolymer, there is no discoloration of the ink coloring material or bleeding that occurs when the ink bleeds out into the vinylidene chloride copolymer layer. .
また、前記透明性樹脂層は前記メジュームを印刷により
コーティングした後、コロナ処理を施しているので、表
面張力が大きくて均一な層となっている。このため、塩
化ビニリデン系共重合体を塗布した際の密着が良く、均
一にむらなく塗布できるので、塩化ビニリデン系共重合
体層に欠陥を生じることがない。Furthermore, since the transparent resin layer is coated with the medium by printing and then subjected to corona treatment, the layer has a high surface tension and is uniform. For this reason, when the vinylidene chloride copolymer is applied, it has good adhesion and can be applied uniformly and evenly, so that no defects occur in the vinylidene chloride copolymer layer.
従って、外観及び容器表面の艶が良好で、ガスバリヤ性
に優れた容器となっている。Therefore, the container has a good appearance and a glossy surface, and has excellent gas barrier properties.
以下、本発明の実施例を第１図及び第２図を参照して説
明する。Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.
第１図は本発明の一実施例のガスバリヤ性容器を示した
ものである。FIG. 1 shows a gas barrier container according to an embodiment of the present invention.
このガスバリヤ性容器ｌの壁面であるＡ部の拡大図を第
２図に示す。An enlarged view of part A, which is the wall surface of this gas barrier container l, is shown in FIG.
ガスバリヤ性容器１は、射出成形プラスチック容器２の
外側に印刷によるインキ面３と透明性樹脂層４と塩化ビ
ニリデン系共重合体層５とを有する構成となっている。The gas barrier container 1 has a structure including an ink surface 3 printed by printing, a transparent resin layer 4, and a vinylidene chloride copolymer layer 5 on the outside of an injection molded plastic container 2.
上記射出成形プラスチック容器２の材質としては、射出
成形が可能であればなんでもよく、ポリエチレン、ポリ
プロピレン等のポリオレフィンやポリエステル、ポリス
チレン、ポリ塩化ビニル、ポリエチレンテレフタレート
等の樹脂材料を用いることができるが、飲料等の容器の
材質としてはポリスチレン、ポリプロピレン、ポリエチ
レンテレフタレート等が好適であり、さらに耐衝撃性を
付与した容器とするためにはハイインパクトポリスチレ
ン等が好適である。The injection molded plastic container 2 may be made of any material as long as it can be injection molded, and polyolefins such as polyethylene and polypropylene, and resin materials such as polyester, polystyrene, polyvinyl chloride, and polyethylene terephthalate can be used. Preferred materials for containers include polystyrene, polypropylene, polyethylene terephthalate, etc., and high-impact polystyrene and the like are preferred in order to provide containers with impact resistance.
本発明において、印刷に用いるインキとしては射出成形
プラスチック容器２に印刷が可能であればよく、プラス
チック製印刷容器を製造する際には、−膜内にはドライ
オフセット印刷が用いられていることから、ドライオフ
セットインキが好ましく、特に熱重合タイプやＵＶ硬化
タイプのインキが好ましい。In the present invention, the ink used for printing may be any ink that can print on the injection molded plastic container 2, and when manufacturing a plastic printed container, - since dry offset printing is used in the film, , dry offset ink is preferred, and thermal polymerization type or UV curing type ink is particularly preferred.
また、インキを構成する色材としては所望の印刷パター
ンに応じ適当な顔料を使用することができ、またメジュ
ームとしてはエポキシ樹脂、アクリル樹脂、アルキド樹
脂等の樹脂成分を含有するものが好ましい。特にエポキ
シ基を有する熱重合タイプの樹脂が好ましい。なお、メ
ジューム用溶剤としては、メチルエチルケトン等の有機
溶剤を使用することができる。Further, as the coloring material constituting the ink, a suitable pigment can be used depending on the desired printing pattern, and as the medium, one containing a resin component such as an epoxy resin, acrylic resin, or alkyd resin is preferable. In particular, thermally polymerizable resins having epoxy groups are preferred. Note that as the medium solvent, an organic solvent such as methyl ethyl ketone can be used.
本発明において、メジュームのみを印刷によりコーティ
ングするのでその樹脂分が透明性樹脂層として形成され
る。In the present invention, since only the medium is coated by printing, the resin component is formed as a transparent resin layer.
本発明においては、前記メジュームを０．１〜０゜５ｇ
／ｍ″、例えば約０．３ｇ／ｍ″となるように塗布する
。透明性樹脂層が０．１ｇ／ｍ″未満だとインキが後述
の塩化ビニリデン系共重合体層にブリードアウトしやす
く、また０、５ｇ／ｍ’を超えてもそれに応じた効果の
向上は認められない。In the present invention, the medium is 0.1 to 0.5 g.
/m'', for example, approximately 0.3 g/m''. If the transparent resin layer is less than 0.1 g/m', the ink tends to bleed out into the vinylidene chloride copolymer layer described below, and even if it exceeds 0.5 g/m', there is no corresponding improvement in effectiveness. I can't.
透明性樹脂層４の印刷方法としては、特に限定されない
が、上記インキ面３と同様にドライオフセット印刷が好
ましい。また、透明性樹脂層４はインキ面３を平滑にし
、塩化ビニリデン系共重合体を一様にかつ接着性良く塗
布するために、透明性樹脂層の表面張力が４８ｄｙｎ
／ｃｍ以上で、かつ均一であることが要求される。上記
要件を満たすためには、コーティングの後にコロナ処理
を施すことが必要である。コロナ処理の条件としては、
例えば１００Ｖ ｘｌｏＯＡが好ましい。The method of printing the transparent resin layer 4 is not particularly limited, but dry offset printing is preferred as in the case of the ink surface 3 described above. In addition, the transparent resin layer 4 has a surface tension of 48 dyn in order to smooth the ink surface 3 and apply the vinylidene chloride copolymer uniformly and with good adhesion.
/cm or more and uniformity is required. In order to meet the above requirements, it is necessary to apply a corona treatment after coating. The conditions for corona treatment are:
For example, 100V xloOA is preferred.
本発明において用いる塩化ビニリデン系共重合体として
は、塩化ビニリデンの含有量が６０重量部以上、アクリ
ル系単量体の含有量が４０重量部以下のものが好ましい
。アクリル系単量体としてはアクリル酸、メタクリル酸
、又はこれらの誘導体等が好ましく、特にアクリル酸が
好ましい。The vinylidene chloride copolymer used in the present invention preferably has a vinylidene chloride content of 60 parts by weight or more and an acrylic monomer content of 40 parts by weight or less. As the acrylic monomer, acrylic acid, methacrylic acid, or derivatives thereof are preferred, with acrylic acid being particularly preferred.
なお、本発明においては塩化ビニリデン系共重合体に、
その特性を損なわない範囲内で、例えば塩化ビニル、ア
クリロニトリル、酢酸ビニル等の成分を少量共重合させ
てもよい。In addition, in the present invention, the vinylidene chloride copolymer contains
For example, a small amount of components such as vinyl chloride, acrylonitrile, vinyl acetate, etc. may be copolymerized within a range that does not impair its properties.
本発明においては、この塩化ビニリデン系共重合体を均
一にむらなく塗布するために、水系のラテックスあるい
はエマルジョンの形態とするのが好ましい。塗布方法は
特に限定されず、スプレーコート方式、ディッピング方
式等公知のものが使用できる。In the present invention, in order to apply the vinylidene chloride copolymer uniformly and evenly, it is preferably in the form of an aqueous latex or emulsion. The coating method is not particularly limited, and known methods such as a spray coating method and a dipping method can be used.
この塩化ビニリデン系共重合体の水系のエマルジョン又
はラテックスは、乾燥膜厚が３〜２０μｍとなるように
塗布するのが好ましく、特に５〜１２μｍとなるように
塗布するのが好ましい。塩化ビニリデン系共重合体層５
の厚さが３μｍ未満であるとガスバリヤ性が低く、内容
物の保存性に支障をきたし、また２０μｍを超えても意
味がない。The aqueous emulsion or latex of the vinylidene chloride copolymer is preferably applied to give a dry film thickness of 3 to 20 μm, particularly preferably 5 to 12 μm. Vinylidene chloride copolymer layer 5
If the thickness is less than 3 μm, the gas barrier property will be poor and the storage stability of the contents will be impaired, and if it exceeds 20 μm, there is no point.
本発明を以下の実施例により、さらに詳細に説明する。The present invention will be explained in more detail with reference to the following examples.
実施例１
ポリスチレン製射出成形容器（旭化成工業■製スタイロ
ン４３３〉をドライオフセットインキ（東洋インキ■製
ｐｗｓ）でドライオフセット印刷し、ポリスチレン製
印刷カップを作成した。Example 1 A polystyrene injection-molded container (Styron 433 manufactured by Asahi Kasei Industries, Ltd.) was subjected to dry offset printing using dry offset ink (PWS manufactured by Toyo Ink ■) to produce a polystyrene printed cup.
この印刷カップの表面に、ドライオフセット透明インキ
のＰＷＳメジューム（東洋インキ■製）をドライオフセ
ット印刷法で０．２ｇ／ｍ″となるように印刷面全面に
コーティングし、０．２ μｍの厚さの透明性樹脂層を
形威した。次いで、表面張力が６０ｄｙｎ ／ｃｍ以上
となるように１００Ｖ Ｘ １００＾の条件でコロナ処
理を施した。The surface of this printing cup is coated with PWS medium (manufactured by Toyo Ink), a dry offset transparent ink, using the dry offset printing method to a thickness of 0.2 μm. A transparent resin layer was formed.Then, corona treatment was performed under the conditions of 100V x 100^ so that the surface tension was 60 dyn/cm or more.
その後、塩化ビニリデン９０重量部とアクリル系単量体
１０重量部からなる塩化ビニリデン系共重合体のエマル
ジョン（クレハ化学■製 ＤＯＡＸ−２）をスプレーコ
ート法によりコーティングした後、６０℃で２分間乾燥
し、乾燥膜厚が１０μｍの塩化ビニリデン系共重合体層
を形成し、第１図に示すガスバリヤ性容器１を形成した
。Thereafter, an emulsion of a vinylidene chloride copolymer (DOAX-2 manufactured by Kureha Chemical ■) consisting of 90 parts by weight of vinylidene chloride and 10 parts by weight of an acrylic monomer was coated by spray coating, and then dried at 60°C for 2 minutes. Then, a vinylidene chloride copolymer layer having a dry thickness of 10 μm was formed to form a gas barrier container 1 shown in FIG.
上述のように形威されたガスバリヤ性容器の酸素透過度
を測定し、また、容器の外観を目視により評価した。The oxygen permeability of the gas barrier container formed as described above was measured, and the appearance of the container was visually evaluated.
結果を第１表に示す。The results are shown in Table 1.
実施例２
実施例１において印刷に用いた、ドライオフセットイン
キの代わりに、ＵＶ硬化型ドライオフセットインキ（東
洋インキ■製フラッシュドライ〉を用いた以外は、実施
例１と同一条件でガスバリヤ性容器を形威し、実施例１
と同様にして酸素透過度の測定及び容器外観の目視によ
る評価を行った。結果を第１表にあわせて示す。Example 2 A gas barrier container was produced under the same conditions as in Example 1, except that instead of the dry offset ink used for printing in Example 1, UV-curable dry offset ink (Flash Dry manufactured by Toyo Ink ■) was used. Exercising, Example 1
In the same manner as above, the oxygen permeability was measured and the container appearance was visually evaluated. The results are also shown in Table 1.
比較例１
ポリスチレン製射出成形容器（旭化戊工業■製スタイロ
ン４３３）をドライオフセットインキ（東洋インキ■製
ＰＷＳ）でドライオフセット印刷し、ポリスチレン製
印刷カップを作成した。このカップ全表面に表面張力が
５Ｑｄｙｎ ７０ｍ以上となるように実施例１と同一の
条件でコロナ処理を施した。Comparative Example 1 A polystyrene injection molded container (Stylon 433 manufactured by Asahi Kasho Kogyo ■) was subjected to dry offset printing using a dry offset ink (PWS manufactured by Toyo Ink ■) to create a polystyrene printed cup. Corona treatment was applied to the entire surface of this cup under the same conditions as in Example 1 so that the surface tension was 5Qdyn 70m or more.
その後、塩化ビニリデン９０重量部とアクリル系単量体
１０重量部からなる塩化ビニ２リデン系共重合体のエマ
ルジョン（クレハ化学■ｌ ＤＯＡＸ−２）を実施例
１と同一の方法によりコーティングした後、６０℃で２
分間乾燥し、乾燥膜厚が１０μｍの塩化ビニリデン系共
重合体層を形成しガスバリヤ性容器を形成した。Thereafter, an emulsion of a vinylidene chloride copolymer (Kureha Chemical ■1 DOAX-2) consisting of 90 parts by weight of vinylidene chloride and 10 parts by weight of an acrylic monomer was coated in the same manner as in Example 1. 2 at 60℃
This was dried for a minute to form a vinylidene chloride copolymer layer with a dry thickness of 10 μm, thereby forming a gas barrier container.
上述のように形成されたガスバリヤ性容器の酸素透過度
を実施例１と同様にして測定し、また、容器の外観を目
視により評価した。結果を第１表にあわせて示す。The oxygen permeability of the gas barrier container formed as described above was measured in the same manner as in Example 1, and the appearance of the container was visually evaluated. The results are also shown in Table 1.
比較例２
比較例１で作成した印刷カップの表面にドライオフセッ
ト透明インキのＰＷＳメジューム（東洋インキ■製〉を
ドライオフセット印刷法で０．２ｇ／ｍ′となるように
印刷面全面にコーティングし、０．２ μｍの厚さの透
明性樹脂層を形成した。次いで、コロナ処理を施さずに
塩化ビニリデン９０重量部とアクリル系単量体１０重量
部からなる塩化ビニリデン系共重合体のエマルジョン（
クレハ化学■ｌ ＤＯＡＸ−２）を、実施例１と同一
の方法によりコーティングした後、６０℃で２分間乾燥
し、乾燥膜厚が１０μｍの塩化ビニリデン系共重合体層
を形成し、ガスバリヤ性容器を形成した。Comparative Example 2 The surface of the printing cup prepared in Comparative Example 1 was coated with PWS medium (manufactured by Toyo Ink), a dry offset transparent ink, over the entire printed surface using a dry offset printing method at a density of 0.2 g/m'. A transparent resin layer with a thickness of 0.2 μm was formed.Next, an emulsion of a vinylidene chloride copolymer consisting of 90 parts by weight of vinylidene chloride and 10 parts by weight of an acrylic monomer was formed without corona treatment.
Kureha Chemical ■1 DOAX-2) was coated using the same method as in Example 1, and then dried at 60°C for 2 minutes to form a vinylidene chloride copolymer layer with a dry film thickness of 10 μm. was formed.
上述のように形成されたガスバリヤ性容器の酸素透過度
を実施例１と同様にして測定し、また、容器の外観を目
視により評価した。結果を第１表にあわせて示す。The oxygen permeability of the gas barrier container formed as described above was measured in the same manner as in Example 1, and the appearance of the container was visually evaluated. The results are also shown in Table 1.
第 １ 表
（注）＊：印刷層とガスバリヤ層との間の部分的剥離に
より印刷がきれいに見えない。Table 1 (Note) *: Printing cannot be clearly seen due to partial peeling between the printing layer and the gas barrier layer.
上記実験結果によれば本発明の実施例のガスバリヤ性容
器では酸素の透過度が低く、外観も良好であった。これ
に対し透明性樹脂層のない比較例１では、特に外観にお
いて印刷の艶が劣り、また、コロナ処理を施さない比較
例２では、塩化ビニリデン系共重合体層の接着が悪く、
このため酸素の透過度が高く、外観も良くなかった。According to the above experimental results, the gas barrier containers of Examples of the present invention had low oxygen permeability and good appearance. On the other hand, in Comparative Example 1 without a transparent resin layer, the printing gloss was poor, especially in terms of appearance, and in Comparative Example 2 without corona treatment, the adhesion of the vinylidene chloride copolymer layer was poor.
Therefore, the oxygen permeability was high and the appearance was not good.
上述したように、本発明のガスバリヤ性容器は、射出成
形容器の印刷面とガスバリヤ性を有する塩化ビニリデン
系共重合体層の間に、インキと同種のメジュームをコー
ティングし、その後コロナ処理を施してなる透明性樹脂
層を設けているので、印刷のインキが酸性の強い塩化ビ
ニリデン系共重合体と直接接触しないので、インキに滲
みを生じず、インキ面の艶の劣化も起こらない。また、
前記透明性樹脂層はコロナ処理を施されたものであるた
め、表面張力が均一であり、塩化ビニリデン系共重合体
を一様に塗布できる。このため、ガスバリヤ性も向上し
ている。As mentioned above, the gas barrier container of the present invention is produced by coating the same type of medium as the ink between the printed surface of the injection molded container and the vinylidene chloride copolymer layer having gas barrier properties, and then corona treatment. Since the transparent resin layer is provided, the printing ink does not come into direct contact with the highly acidic vinylidene chloride copolymer, so the ink does not bleed and the gloss of the ink surface does not deteriorate. Also,
Since the transparent resin layer has been subjected to corona treatment, the surface tension is uniform, and the vinylidene chloride copolymer can be uniformly applied. Therefore, gas barrier properties are also improved.
従って、印刷面が良好で、かつガスバリヤ性にも優れた
射出成形容器を得られるようになった。Therefore, it has become possible to obtain an injection molded container with a good printed surface and excellent gas barrier properties.
第１図は本発明の一実施例のガスバリヤ性容器の縦断面
図であり、
第２図はガスバリヤ性容器の構成を示す部分拡大断面図
である。
ｌ・・・ガスバリヤ性容器
２・・・射出成形プラスチック容器
３・・・印刷インキ層
４・・・透明性樹脂層
５・・・塩化ビニリデン系共重合体層FIG. 1 is a longitudinal sectional view of a gas barrier container according to an embodiment of the present invention, and FIG. 2 is a partially enlarged sectional view showing the structure of the gas barrier container. l... Gas barrier container 2... Injection molded plastic container 3... Printing ink layer 4... Transparent resin layer 5... Vinylidene chloride copolymer layer
Claims (1)
系共重合体層を有するガスバリヤ性容器において、印刷
面と前記塩化ビニリデン系共重合体層との間に、前記印
刷に用いたインクのメジュームを印刷によりコーティン
グした後、コーティング面をコロナ処理して形成される
透明性樹脂層を設けたことを特徴とするガスバリヤ性容
器。In a gas barrier container having a vinylidene chloride copolymer layer on the outside of the printed injection molded container, a medium of the ink used for the printing is placed between the printed surface and the vinylidene chloride copolymer layer. A gas barrier container characterized by being provided with a transparent resin layer formed by coating by printing and then corona treatment of the coated surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171597A JPH0336006A (en) | 1989-07-03 | 1989-07-03 | Vessel with gas barrier property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171597A JPH0336006A (en) | 1989-07-03 | 1989-07-03 | Vessel with gas barrier property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0336006A true JPH0336006A (en) | 1991-02-15 |
Family
ID=15926118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1171597A Pending JPH0336006A (en) | 1989-07-03 | 1989-07-03 | Vessel with gas barrier property |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0336006A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009254561A (en) * | 2008-04-16 | 2009-11-05 | Watanabe Kk | Carry bag belt |
-
1989
- 1989-07-03 JP JP1171597A patent/JPH0336006A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009254561A (en) * | 2008-04-16 | 2009-11-05 | Watanabe Kk | Carry bag belt |
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