JP2003012983A - Printing ink for lamination and laminated sheet to be obtained by using the same - Google Patents
Printing ink for lamination and laminated sheet to be obtained by using the sameInfo
- Publication number
- JP2003012983A JP2003012983A JP2001204205A JP2001204205A JP2003012983A JP 2003012983 A JP2003012983 A JP 2003012983A JP 2001204205 A JP2001204205 A JP 2001204205A JP 2001204205 A JP2001204205 A JP 2001204205A JP 2003012983 A JP2003012983 A JP 2003012983A
- Authority
- JP
- Japan
- Prior art keywords
- lamination
- resin
- printing ink
- printing
- film
- 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
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】 本発明は、積層用印刷イン
キとそれを用いて得られる積層シ−ト及びその成形品に
関する発明である。詳しくは、本発明積層用印刷インキ
は、発泡ポリスチレンシ−ト等に積層する積層用印刷フ
イルムの印刷用インキとして用いるものであり、該イン
キは、食品容器等の成形品製造の際に優れた接着強度を
発揮するものである。TECHNICAL FIELD The present invention relates to a printing ink for lamination, a lamination sheet obtained by using the printing ink, and a molded product thereof. Specifically, the printing ink for lamination of the present invention is used as a printing ink for a printing film for lamination to be laminated on a foamed polystyrene sheet or the like, and the ink is excellent in the production of molded articles such as food containers. It exhibits adhesive strength.
【０００２】[0002]
【従来の技術】 従来より、プラスチック成形品、特に
シ−ト成形品の表面に印刷するときには、直接印刷する
よりも印刷が容易なプラスチックフィルムに所望の印刷
を施して得られる積層（ラミネ−ト）用印刷フィルムの
印刷面を成形品表面に向け積層し、実質的に成形品の表
面上に印刷を実現する積層品が、従来より盛んに製造さ
れている。この積層法は、加熱下の圧着又は接着剤によ
る方法があるが、印刷インキによる印刷インキ層は加熱
圧着すると接着剤として作用して積層を形成することが
でき、この方法により緩衝性及び加工性に優れた発泡ポ
リスチレンシ−トとポリスチレンフィルムを用いて得ら
れる積層シ−トは、各種食料品用容器の成形材料として
大量に製造されている。2. Description of the Related Art Conventionally, when printing on the surface of a plastic molded product, particularly a sheet molded product, a laminate (laminate) obtained by performing desired printing on a plastic film which is easier to print than direct printing A laminated product in which the printing surface of the printing film for (1) is laminated toward the surface of the molded product and printing is substantially achieved on the surface of the molded product has been actively produced. This laminating method includes a method of pressure bonding under heating or a method of using an adhesive, but the printing ink layer of the printing ink can act as an adhesive when heated and pressure bonded to form a layer. The laminated sheet obtained by using the excellent expanded polystyrene sheet and the polystyrene film is produced in large quantities as a molding material for various food containers.
【０００３】そして、この際に使用するインキ中の樹脂
成分としては、ポリスチレンフイルムおよび発泡ポリス
チレンシ−トに対して、接着性が良好であるアクリル系
樹脂が一般に使用されている。そして、この際には発泡
ポリスチレンシ−トが耐熱性に弱いこと、接着操作が容
易なことから、この際に使用する印刷インキには、ガラ
ス転移点が４０〜５０℃程度のアクリル系樹脂が一般に
使用されている。更にポリスチレンフィルムと発泡ポリ
スチレンシ−トから得られた積層シ−トは真空成形機あ
るいは加圧成形機を用い積層シ−トが熱収縮しない程度
の温度で、カップ状や丼状等に成形している。しかし、
この加熱による成形の際には、積層シ−トの材料である
発泡ポリスチレンシ−ト製造の際に使用した発泡用ガス
残留分がフィルムとシ−トの間に発生し、成形品の表面
にデラミネ−ション（デラミ）現象を生じてフィルムが
剥がれ成形品の美観を損ない商品価値を失う事故が屡々
発生している。As the resin component in the ink used at this time, an acrylic resin having good adhesion to polystyrene film and expanded polystyrene sheet is generally used. At this time, since the expanded polystyrene sheet is weak in heat resistance and the adhesion operation is easy, the printing ink used at this time is an acrylic resin having a glass transition point of about 40 to 50 ° C. It is commonly used. Further, the laminated sheet obtained from the polystyrene film and the expanded polystyrene sheet is molded into a cup shape or a bowl shape using a vacuum molding machine or a pressure molding machine at a temperature at which the laminated sheet does not shrink thermally. ing. But,
At the time of molding by this heating, the residual gas for foaming used in the production of the expanded polystyrene sheet which is the material of the laminated sheet is generated between the film and the sheet, and the surface of the molded article is formed. Accidents often occur in which the film is peeled off due to the phenomenon of delamination (delamination), which impairs the aesthetics of the molded product and loses its commercial value.
【０００４】[0004]
【発明が解決しようとする課題】 本発明者等は、上記
の成形品表面に発生するフィルムの剥がれを解決するた
め検討を重ねた結果、積層用印刷インキに用いる樹脂に
ついて、従来品より高いガラス転移点に限定することに
よって、積層シ−トを用い成形の際に、ポリスチレンフ
ィルムと発泡ポリスチレンシ−トとの接着面間に残留ガ
スの発生によるデラミネ−ションを生じないことを知見
したのである。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As a result of repeated investigations by the present inventors in order to solve the peeling of the film generated on the surface of the above-mentioned molded product, the resin used for the printing ink for lamination has a higher glass than that of the conventional product. By limiting the transition point, it was found that delamination due to the generation of residual gas does not occur between the adhesive surfaces of the polystyrene film and the expanded polystyrene sheet during molding using the laminated sheet. .
【０００５】[0005]
【課題を解決するための手段】 すなわち、本発明請求
項１は、顔料、樹脂及び有機溶剤を主成分として構成す
るラミネ−ト印刷用インキにおいて、該インキ中に樹脂
を５〜４０重量％配合しており、かつ、該樹脂１００重
量部中にガラス転移点（ＪＩＳ−Ｋ−７１２１）６０〜
９０℃のアクリル系樹脂５０〜１００重量部を含有して
なる積層用印刷インキである。本発明で使用の樹脂は、
アクリル系樹脂、及びアクリル系樹脂と相溶性が良好な
もの、例えば繊維素系樹脂（硝化綿、セルロ−スアセテ
−トブチレ−ト等）、ケトン樹脂、ロジンエステル、ア
ルキルフェノ−ル、塩化ビニル・酢酸ビニル共重合樹脂
等が挙げられる。そしてアクリル系樹脂としては、ガラ
ス転移点が６０〜９０℃であるメタアクリル酸エステル
の重合体、又はメタアクリル酸エステルと他のモノマ−
との共重合体が、同様にガラス転移点が６０〜９０℃で
あるアクリル酸エステルの重合体、又はアクリル酸エス
テルと他のモノマ−との共重合体が挙げられる。尚、目
的とする共重合体を得るには、下記各モノマ−混合物を
常法により溶液重合で得ることができる。[Means for Solving the Problems] That is, according to claim 1 of the present invention, in a laminar printing ink comprising a pigment, a resin and an organic solvent as main components, the resin is mixed in an amount of 5 to 40% by weight. And a glass transition point (JIS-K-7121) of 60 to 100 parts by weight of the resin.
A printing ink for laminating comprising 50 to 100 parts by weight of an acrylic resin at 90 ° C. The resin used in the present invention is
Acrylic resins and those that have good compatibility with acrylic resins, such as fibrinous resins (nitrified cotton, cellulose acetate butyrate, etc.), ketone resins, rosin esters, alkylphenols, vinyl chloride / acetic acid Examples thereof include vinyl copolymer resins. As the acrylic resin, a methacrylic acid ester polymer having a glass transition point of 60 to 90 ° C., or a methacrylic acid ester and another monomer.
Similarly, a copolymer of acrylic acid ester having a glass transition point of 60 to 90 ° C., or a copolymer of acrylic acid ester and another monomer can be mentioned. In order to obtain the target copolymer, each of the following monomer mixtures can be obtained by solution polymerization by a conventional method.
【０００６】詳しくは、メタアクリル酸エステルとして
は、メチル、エチル、イソプロピル、ｎ−プロピル、ｎ
−ブチル、ｔ−ブチル、２−エチルヘキシル、ラウリル
等のアルキルエステル、脂環、芳香環、複素環及びビニ
ル基含有エステル、ヒドロキシル基またはアミノ基含有
エステル等の重合体が挙げられる。又、メタアクリル酸
エステルと他のモノマ−との共重合体では、他のモノマ
−としてアクリル酸、メタクリル酸、スチレン、マレイ
ン酸、イタコン酸、アクリロニトリル、酢酸ビニル、ブ
タジエン等の共重合体が挙げられる。同様にアクリル酸
エステルについても、上記重合体及び共重合体が挙げら
れる。本発明積層用印刷インキ中に占める樹脂成分は、
印刷適性を考慮して５〜４０重量％が好ましく、５重量
％より少ないと顔料分散不良のためインキの製造が困難
となる、また４０重量％より多いとインキが高粘度とな
り好ましくない。また、本発明の積層用印刷インキは、
樹脂１００重量部中にアクリル系樹脂が５０〜１００重
量部を配合した場合がポリスチレンフィルムと発泡ポス
チレンシ−トへの接着性が良好であり好ましい、５０重
量部より少ないとポリスチレンフィルム及び発泡ポリス
チレンシ−トへの接着性が低下して好ましくない。More specifically, as the methacrylic acid ester, methyl, ethyl, isopropyl, n-propyl, n
Polymers such as alkyl esters such as -butyl, t-butyl, 2-ethylhexyl and lauryl, alicyclic rings, aromatic rings, heterocyclic rings and vinyl group-containing esters, hydroxyl group- or amino group-containing esters and the like can be mentioned. Further, examples of copolymers of methacrylic acid ester and other monomers include copolymers of acrylic acid, methacrylic acid, styrene, maleic acid, itaconic acid, acrylonitrile, vinyl acetate and butadiene as other monomers. To be Similarly, regarding the acrylic acid ester, the above-mentioned polymers and copolymers can be mentioned. The resin component in the printing ink for lamination of the present invention is
In view of printability, it is preferably 5 to 40% by weight, and if it is less than 5% by weight, it becomes difficult to produce an ink due to poor pigment dispersion, and if it is more than 40% by weight, the ink has a high viscosity, which is not preferable. Further, the printing ink for lamination of the present invention,
It is preferable that 50 to 100 parts by weight of the acrylic resin is mixed in 100 parts by weight of the resin, because the adhesiveness to the polystyrene film and the foamed polystyrene sheet is good, and if less than 50 parts by weight, the polystyrene film and the polystyrene foam sheet are preferable. It is not preferable because the adhesiveness to the sheet is lowered.
【０００７】アクリル系樹脂のガラス転移点は、６０〜
９０℃が好ましく、これにより従来のラミネ−ト用印刷
インキを用いポリスチレンフイルムと発泡ポリスチレン
シ−トをラミネ−トして得られる積層シ−トを長期間保
存した場合や、積層シ−トを用い加熱成形により各種容
器を製造した際に発生ずるデラミネ−ションを一挙に解
決したのである。尚、アクリル系樹脂としては、分子量
が２万〜１５万のものを通常使用するが、好ましくは３
万〜１０万であると良い。分子量が２万以下では接着性
及び耐ブロッキング性が不十分となり、また１５万より
大きいと高粘度化し溶解性が不十分となり好ましくな
い。本発明の積層用印刷インキは、顔料を含有する場合
及び顔料を含有しない場合があるが、いずれも印刷フィ
ルムの印刷層を内側に介在させて発泡ポリスチレンシ−
トに積層するものである。The glass transition point of acrylic resin is 60 to
90 [deg.] C. is preferable, and when the laminated sheet obtained by laminating the polystyrene film and the expanded polystyrene sheet with the conventional printing ink for laminating is stored for a long period of time or the laminated sheet is laminated, The delamination that occurs when various containers are manufactured by heat molding is solved all at once. As the acrylic resin, one having a molecular weight of 20,000 to 150,000 is usually used, but preferably 3
It is good to be 10,000 to 100,000. If the molecular weight is 20,000 or less, the adhesion and blocking resistance will be insufficient, and if it exceeds 150,000, the viscosity will be high and the solubility will be insufficient, such being undesirable. The printing ink for lamination of the present invention may or may not contain a pigment, but in both cases, the expanded polystyrene sheet is formed by interposing the printing layer of the printing film inside.
It is to be stacked on top.
【０００８】請求項２は、請求項１記載のアクリル系樹
脂成分がメタクリル酸エステル重合体及び／又はアクリ
ル酸エステル共重合体であることを特徴とする積層用印
刷インキに関する発明である。ガラス転移点が６０〜９
０℃と高いメタクリル酸エステル重合体及び／又はアク
リル酸エステル共重合体は、積層シ−トを用い成形の際
に発泡ポリスチレンシ−トが軟化し易い温度付近の成形
を行っても、ポリスチレンフィルムと発泡ポリスチレン
シ−トが完全に積層されており残留ガスによる気泡によ
る膨れを生ぜず、デラミネ−ションが全く発生しないと
いう優れた効果を発揮するものである。請求項３は、請
求項１記載のガラス転移点が６０〜９０℃のアクリル系
樹脂配合の積層用印刷インキ用いて、ポリスチレンフィ
ルムに印刷してなる積層用印刷フィルムである。本発明
では、印刷が容易なポリスチレンフィルムに所望の印刷
を施して得られる積層（ラミネ−ト）用印刷フィルムの
印刷面を成形品表面に向け印刷する、所謂裏刷り印刷す
ることで、実質的に成形品の表面上に印刷を実現する積
層品が得られるものである。尚、使用するポリスチレン
フィルムとしては、通常グラビア印刷に使用されるもの
であれば、いずれも使用可能である。A second aspect of the present invention is an invention relating to a printing ink for laminating, wherein the acrylic resin component according to the first aspect is a methacrylic acid ester polymer and / or an acrylic acid ester copolymer. Glass transition point is 60-9
A methacrylic acid ester polymer and / or an acrylic acid ester copolymer having a high temperature of 0 ° C. can be used as a polystyrene film even if molding is performed near a temperature at which the expanded polystyrene sheet is easily softened during molding using a laminated sheet. And the expanded polystyrene sheet are completely laminated, and the swelling due to the bubbles due to the residual gas does not occur, and the delamination does not occur at all, which is an excellent effect. A third aspect of the present invention is a printing film for lamination, which is obtained by printing on a polystyrene film using the printing ink for lamination containing the acrylic resin having the glass transition point of 60 to 90 ° C. In the present invention, by subjecting the printed surface of the laminated (laminate) printing film obtained by applying desired printing to a polystyrene film that is easy to print to the surface of the molded article, so-called back-printing, the In addition, a laminated product that realizes printing on the surface of the molded product can be obtained. As the polystyrene film to be used, any one can be used as long as it is usually used for gravure printing.
【０００９】請求項４は、請求項３記載の積層用印刷フ
ィルムの印刷面側を発泡ポリスチレンシ−トに熱圧着し
て得られる積層シ−トである。請求項３記載の積層用印
刷フィルムは、１２０〜２００℃で発泡ポリスチレンシ
−トを熱圧着し容易に積層シ−トが得られる。この際に
請求項１記載の積層用印刷インキによって、ポリスチレ
ンフィルムと発泡ポリスチレンシ−トが完全に熱圧着さ
れた積層シ−トが得られ、その後長期間放置されてもデ
ラミネ−ションは全く発生しない。A fourth aspect of the present invention is a laminated sheet obtained by thermocompression-bonding the printing surface side of the laminated printing film of the third aspect to an expanded polystyrene sheet. In the laminated printing film according to the third aspect, a laminated sheet can be easily obtained by thermocompressing an expanded polystyrene sheet at 120 to 200 ° C. At this time, the laminated printing ink according to claim 1 gives a laminated sheet in which the polystyrene film and the expanded polystyrene sheet are completely thermocompression bonded, and delamination occurs at all even if left for a long time thereafter. do not do.
【００１０】請求項５は、請求項４記載の積層シ−トを
１３０〜１６０℃において加熱成形して得られる成形容
器である。本発明で得られる成形容器としては、トレ
−、カップ、丼等各種容器が挙げられ、１３０〜１６０
℃と比較的高い温度での成形でもデラミネ−ションする
ことなく、複雑な形状の場合でも無理なく美麗な成形品
が得られるものである。本発明での加熱成形方法は、従
来より発泡ポリスチレンシ−トを加熱成形する方法、例
えば真空成形機、熱板成形機、圧空成形機等通常の装置
を使用して容易に得られるものである。尚、本発明の印
刷インキの製造は、従来より汎用されている有機溶剤及
び顔料を用い、汎用の製法で製造するものである。A fifth aspect of the present invention is a molding container obtained by heat-molding the laminated sheet according to the fourth aspect at 130 to 160 ° C. Examples of the molded container obtained in the present invention include various containers such as trays, cups, and bowls.
Even if the molding is performed at a relatively high temperature of ℃, delamination does not occur, and a beautiful molded product can be reasonably obtained even in the case of a complicated shape. The heat-molding method of the present invention is conventionally obtained by a method of heat-molding expanded polystyrene sheet, for example, a vacuum molding machine, a hot plate molding machine, a pressure molding machine or the like, which can be easily obtained by using an ordinary apparatus. . The printing ink of the present invention is manufactured by a general-purpose manufacturing method using an organic solvent and a pigment which have been widely used in the past.
【００１1】以下に、実施例及び比較例を述べる。尚、
重量部は、部と省略する。
実施例１ 本発明の積層用印刷インキは、主成分が有機
溶剤、顔料と樹脂からなり、該インキ中に占める樹脂の
割合が３０重量％であり、且つ、該樹脂１００部中の割
合がアクリル系樹脂９０部及び繊維素系樹脂１０部配合
して、製造したものである。尚、使用するアクリル系樹
脂は、下記の表１に記載の通りのメタクリル酸メチルと
メタクリル酸ｎ−ブチルからなる実施例１用のガラス転
移点６２．５℃のアクリル酸エステル共重合体である。
該積層用印刷インキを用い、グラビア印刷機によりポリ
スチレンフィルムに所定の絵柄を印刷し、積層用印刷フ
ィルムを製造する。得られた積層用印刷フィルムの印刷
面を発泡ポリスチレンシ−トに約140℃で熱圧着し積層
シ−トを製造する。該積層シ−トを用い、真空成形機を
用い約１４０℃で、トレ−を成形する。[0111] Examples and comparative examples will be described below. still,
Parts by weight are abbreviated as parts. Example 1 The printing ink for lamination of the present invention comprises an organic solvent as a main component, a pigment and a resin, the resin content in the ink is 30% by weight, and the ratio in 100 parts of the resin is acrylic. It is manufactured by blending 90 parts of a resin based resin and 10 parts of a fiber based resin. The acrylic resin used is an acrylic acid ester copolymer having a glass transition point of 62.5 ° C. for example 1 consisting of methyl methacrylate and n-butyl methacrylate as shown in Table 1 below. .
A predetermined pattern is printed on a polystyrene film with the gravure printing machine using the printing ink for lamination to produce a printing film for lamination. The printing surface of the obtained laminated printing film is thermocompression-bonded to an expanded polystyrene sheet at about 140 ° C. to produce a laminated sheet. Using the laminated sheet, a tray is molded using a vacuum molding machine at about 140 ° C.
【００１２】[0012]
【表１】 [Table 1]
【００１３】実施例２ 樹脂１００部中の割合につい
て、表１記載の実施例２用のガラス転移点７１℃のメタ
クリル酸エステル共重合体９５部、及び繊維素系樹脂５
部を使用する以外は、実施例１と全て同じである。
実施例３ 樹脂１００部中の割合について、表１記載の
実施例３用のガラス転移点６７．９℃のメタクリル酸エ
ステル共重合体８０部、及び繊維素系樹脂２０部を使用
する以外は、実施例１と全て同じである。
実施例４ 樹脂１００部中の割合について、表１記載の
実施例４用のガラス転移点７２．３℃のメタクリル酸エ
ステル共重合体９０部、及び繊維素系樹脂５部を使用す
る以外は、実施例１と全て同じである。
実施例５ 樹脂１００部中の割合について、表１記載の
実施例５用のガラス転移点８６．６℃のメタクリル酸エ
ステル共重合体９５部、及び繊維素系樹脂５部を使用す
る以外は、実施例１と全て同じである。Example 2 With respect to the ratio in 100 parts of the resin, 95 parts of the methacrylic acid ester copolymer having a glass transition point of 71 ° C. for Example 2 shown in Table 1 and the fibrous resin 5 were used.
The procedure is the same as in Example 1 except that parts are used. Example 3 With respect to the ratio in 100 parts of the resin, except that 80 parts of the methacrylic acid ester copolymer having a glass transition point of 67.9 ° C. and 20 parts of the fibrous resin described in Table 1 are used. The procedure is the same as in Example 1. Example 4 Regarding the ratio in 100 parts of the resin, except that 90 parts of the methacrylic acid ester copolymer having a glass transition point of 72.3 ° C. and 5 parts of the fibrin-based resin described in Table 1 were used. The procedure is the same as in Example 1. Example 5 Regarding the ratio in 100 parts of the resin, except that 95 parts of the methacrylic acid ester copolymer having a glass transition point of 86.6 ° C. and 5 parts of the fibrin-based resin described in Table 1 are used. The procedure is the same as in Example 1.
【００１４】[0014]
【表２】 [Table 2]
【００１５】比較例１ 樹脂１００部中の割合につい
て、表２記載の比較例１用のガラス転移点４５．５℃の
メタクリル酸エステル共重合体６０部、及び繊維素系樹
脂４０部を使用する以外は、実施例１と全て同じであ
る。
比較例２ 樹脂１００部中の割合について、表２記載の
比較例２用のガラス転移点５８．１℃のメタクリル酸エ
ステル共重合体７０部、及び繊維素系樹脂３０部を使用
する以外は、実施例１と全て同じである。
比較例３ 有機溶剤、顔料と樹脂からなるインキ中に占
める樹脂の割合が３０重量％であり、且つ、該 樹脂１
００部中の割合について、表２記載の比較例３用のガラ
ス転移点６２．５℃のメタクリル酸エステル共重合体４
０部、及び繊維素系樹脂６０部を調整した積層用印刷イ
ンキを製造する。該積層用印刷インキを用い、グラビア
印刷機によりポリスチレンフィルムに所定の絵柄を印刷
し、積層用印刷フィルムを製造する。得られた積層用印
刷フィルムの印刷面を発泡ポリスチレンシ−トに約１４
０℃で熱圧着し積層シ−トの製造を試みたが、印刷イン
キのポリスチレンに対する接着性に乏しく、積層シ−ト
の製造が困難であり、以後の操作は不可能であった。Comparative Example 1 With respect to the ratio in 100 parts of the resin, 60 parts of the methacrylic acid ester copolymer having a glass transition point of 45.5 ° C. and 40 parts of the fibrin resin shown in Table 2 are used. Except for this, the procedure is the same as in Example 1. Comparative Example 2 Regarding the ratio in 100 parts of the resin, except that 70 parts of the methacrylic acid ester copolymer having a glass transition point of 58.1 ° C. for Comparative Example 2 shown in Table 2 and 30 parts of the fibrous resin are used, The procedure is the same as in Example 1. Comparative Example 3 The ratio of the resin in the ink composed of the organic solvent, the pigment and the resin was 30% by weight, and the resin 1
Regarding the ratio in 00 parts, methacrylic acid ester copolymer 4 having a glass transition point of 62.5 ° C. for Comparative Example 3 shown in Table 2
A printing ink for lamination is prepared in which 0 parts and 60 parts of the fibrous resin are adjusted. A predetermined pattern is printed on a polystyrene film with the gravure printing machine using the printing ink for lamination to produce a printing film for lamination. The printing surface of the obtained laminated printing film was coated with an expanded polystyrene sheet to about 14
An attempt was made to produce a laminated sheet by thermocompression bonding at 0 ° C. However, the adhesiveness of the printing ink to polystyrene was poor and the production of the laminated sheet was difficult, and the subsequent operation was impossible.
【００１６】比較例４ 有機溶剤、顔料と樹脂からなる
インキ中に占める樹脂の割合が３０重量％であり、且
つ、該 樹脂１００部中の割合について、表２記載の比
較例４用のガラス転移点７１℃のメタクリル酸エステル
共重合体４０部、及び繊維素系樹脂６０部を調整した積
層用印刷インキを製造する。該積層用印刷インキを用
い、グラビア印刷機によりポリスチレンフィルムに所定
の絵柄を印刷し、積層用印刷フィルムを製造する。得ら
れた積層用印刷フィルムの印刷面を発泡ポリスチレンシ
−トに約１４０℃で熱圧着し積層シ−トの製造を試みた
が、印刷インキのポリスチレンに対する接着性に乏し
く、積層シ−トの製造が困難であり、以後の操作は不可
能であった。以上通り、実施例１〜５及び比較例１〜２
では、積層用印刷インキを製造し、次に積層用印刷フィ
ルム、積層シ−トの製造工程を経て、最後に成形容器を
製造している。Comparative Example 4 The proportion of the resin in the ink consisting of the organic solvent, the pigment and the resin is 30% by weight, and the proportion in 100 parts of the resin is the glass transition for Comparative Example 4 shown in Table 2. A printing ink for lamination is prepared in which 40 parts of a methacrylic acid ester copolymer having a point of 71 ° C. and 60 parts of a fibrous resin are prepared. A predetermined pattern is printed on a polystyrene film with the gravure printing machine using the printing ink for lamination to produce a printing film for lamination. An attempt was made to produce a laminated sheet by thermocompression-bonding the printed surface of the obtained laminated printing film to a foamed polystyrene sheet at about 140 ° C. However, the adhesiveness of the printing ink to polystyrene was poor and the laminated sheet was The production was difficult and the subsequent operation was impossible. As mentioned above, Examples 1-5 and Comparative Examples 1-2
Then, a printing ink for lamination is produced, then a printing film for lamination and a lamination sheet are produced, and finally a molded container is produced.
【００１７】そこで本発明では、本発明の大きな特徴で
ある積層シ−トを製造して長期保存した場合、また積層
シ−トを用いて成形容器を製造した場合にも、発泡ポリ
スチレン製造の際の残留ガスによるポリスチレンフィル
ムと発泡ポリスチレンシ−トの間にできる膨れやデラミ
ネ−ションについて、下記の方法により測定し結果を表
３に記載した。
デラミネ−ション試験
得られた積層シ−トについて、成形時と同じ加熱温度１
４０、１５０、１６０及び１７０℃に加熱して、デラミ
ネ−ション発生状態を目視により、下記の基準により測
定して、その結果を表３のデラミ（デラミネ−ション）
に記載する。
◎ ………… デラミネ−ションが全く見られない。
○ ………… 若干デラミネ−ションの発生が見られ
る。
△ ………… かなりの箇所にデラミネ−ションが発生
している。
× ………… ポリスチレンが溶解を始め、成形不可
能。Therefore, according to the present invention, when the laminated sheet, which is a major feature of the present invention, is manufactured and stored for a long period of time, or when a molded container is produced using the laminated sheet, the expanded polystyrene is produced. The swelling and delamination formed between the polystyrene film and the expanded polystyrene sheet due to the residual gas were measured by the following method, and the results are shown in Table 3. Delamination test For the obtained laminated sheet, the same heating temperature as during molding 1
After heating to 40, 150, 160 and 170 ° C., the state of occurrence of delamination was visually measured and measured according to the following criteria, and the results are shown in Table 3 delamination (delamination).
Described in. ◎ ………… No delamination is seen. ○ ………… Some delamination is observed. △ ………… Delamination is occurring in a considerable part. × ………… Polystyrene begins to dissolve and cannot be molded.
【００１８】[0018]
【表３】 [Table 3]
【００１９】剥離強度
得られた成形容器について、ＪＩＳ−ｋ−６８５４−２
に準じた下記の方法により測定した。即ち、測定試料と
して、積層シ−トを用い15ｍｍ幅の測定試料を作成し
て、剥離試験を行い接着状態を観察して、下記の基準で
表３に記載する。
◎ ………… フィルムが全く剥がれず、直ぐに破断。
○ ………… フィルムが少し剥がれた後に、破断。
× ………… フィルムが容易に剥がれ、破断を生じな
い。
表３の結果からは、本発明の積層用印刷インキを用い得
られる積層シ−ト及びその成形容器は、膨れやデラミネ
−ションを全く発生せず、従来品の積層用印刷インキの
欠点を解消したものであることを示すものである。Peel strength Regarding the obtained molded container, JIS-k-6854-2
It was measured by the following method according to That is, a 15 mm wide measurement sample was prepared using a laminated sheet as a measurement sample, and a peeling test was performed to observe the adhered state. ◎ ………… The film did not come off at all and broke immediately. ○ ………… The film broke after being slightly peeled off. × ………… The film peels off easily and does not break. From the results shown in Table 3, the laminated sheet obtained by using the laminating printing ink of the present invention and the molded container thereof did not cause swelling or delamination at all, and the drawbacks of the conventional laminating printing ink were solved. It indicates that it has been done.
【００２０】[0020]
【発明の効果】 本発明の積層用印刷インキは、積層シ
−トを用いて加熱による容器の成形の際に、発泡ポリス
チレンシ−トとポリスチレンフィルムの間に発泡ガスの
残留による膨れやデラミネ−ションが全く発生しない優
れた接着性を示すものである。また、本発明の積層用印
刷インキを用い得られる積層シ−トは、表３の結果から
長期間保存しても残留ガスの存在によるフイルムの膨れ
を全く生じない。これらの結果からも、本発明の積層用
印刷インキを用いて得られる各種の成形容器は、美的感
覚にも優れ商品価値を著しく高くするものである。EFFECT OF THE INVENTION The printing ink for lamination according to the present invention has a swelling and a delamination due to the residual foaming gas between the polystyrene foam sheet and the polystyrene film when the container is heated by using the lamination sheet. It exhibits excellent adhesiveness with no generation of friction. Also, from the results shown in Table 3, the laminated sheet obtained by using the printing ink for laminating of the present invention does not cause any bulging of the film due to the presence of residual gas even if it is stored for a long period of time. Also from these results, various molded containers obtained by using the printing ink for lamination of the present invention are excellent in aesthetic sense and significantly increase the commercial value.
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ６５Ｄ 65/40 Ｂ６５Ｄ 1/00 Ｂ (72)発明者 斎藤 満 茨城県北茨城市磯原1564番地 (72)発明者 庄司 豊 茨城県北茨城市磯原1564番地 Ｆターム(参考） 3E033 AA10 BA22 CA20 FA04 3E086 AB01 AD05 AD06 BA04 BA15 BA16 BA24 BB90 CA01 4F100 AK12A AK12C AK25B AL01B AL05B AR00B BA03 BA07 BA10A BA10C DA01 DJ01A GB16 HB31B JA05B JK06 JL00 4J039 AD09 AD10 BE01 BE12 FA02 GA03 GA34 Front page continuation (51) Int.Cl. 7 Identification code FI theme code (reference) B65D 65/40 B65D 1/00 B (72) Inventor Mitsuru Saito 1564 Isohara, Kitaibaraki City, Ibaraki Prefecture (72) Inventor Shoji F-Term 1564, Isohara, Kitaibaraki, Toyohashi, Ibaraki Prefecture (Reference) 3E033 AA10 BA22 CA20 FA04 3E086 AB01 AD05 AD06 BA04 BA15 BA16 BA24 BB90 CA01 4F100 AK12A AK12C AK25B AL01B AD05B10B09A05B01A01B10B01A10B01A16B10CBA01B10CBA01B10CBA01B10CBA01B10CBA01 BE01 BE12 FA02 GA03 GA34
Claims (5)
構成する積層用印刷インキにおいて、該インキ中に樹脂
を５〜４０重量％配合しており、かつ、該樹脂１００重
量部中にガラス転移点６０〜９０℃のアクリル系樹脂５
０〜１００重量部を含有してなる積層用印刷インキ。1. A printing ink for lamination comprising a pigment, a resin and an organic solvent as a main component, wherein the ink contains 5 to 40% by weight of a resin, and 100 parts by weight of the resin has a glass transition. Acrylic resin 5 at point 60-90 ° C
A printing ink for lamination comprising 0 to 100 parts by weight.
クリル酸エステル重合体及び／又はアクリル酸エステル
共重合体であることを特徴とする積層用印刷インキ。2. A printing ink for lamination, wherein the acrylic resin according to claim 1 is a methacrylic acid ester polymer and / or an acrylic acid ester copolymer.
て、ポリスチレンフィルムに印刷してなる積層用印刷フ
ィルム。3. A printing film for lamination, which is obtained by printing on a polystyrene film using the printing ink for lamination according to claim 1.
刷面側を発泡ポリスチレンシ−トに熱圧着して得られる
積層シ−ト。4. A laminated sheet obtained by thermocompression bonding the printed surface side of the laminated printing film according to claim 3 to an expanded polystyrene sheet.
６０℃において加熱成形して得られる成形容器。5. The laminated sheet according to claim 4,
A molded container obtained by heat molding at 60 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001204205A JP3715908B2 (en) | 2001-07-05 | 2001-07-05 | Laminating printing ink and laminating sheet obtained using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001204205A JP3715908B2 (en) | 2001-07-05 | 2001-07-05 | Laminating printing ink and laminating sheet obtained using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003012983A true JP2003012983A (en) | 2003-01-15 |
| JP3715908B2 JP3715908B2 (en) | 2005-11-16 |
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ID=19040710
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001204205A Expired - Lifetime JP3715908B2 (en) | 2001-07-05 | 2001-07-05 | Laminating printing ink and laminating sheet obtained using the same |
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| Country | Link |
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| JP (1) | JP3715908B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006137044A (en) * | 2004-11-11 | 2006-06-01 | Nakamoto Pakkusu Kk | Polystyrene laminated material used for molding electronic oven container |
| JP2006264024A (en) * | 2005-03-23 | 2006-10-05 | Sekisui Plastics Co Ltd | Polystyrenic resin laminated foamed sheet, its manufacturing method and manufacturing method of molded product |
| JP2007231148A (en) * | 2006-03-01 | 2007-09-13 | Tokyo Printing Ink Mfg Co Ltd | Water-based printing ink for lamination and laminated sheet produced by using the same |
| JP2016188301A (en) * | 2015-03-30 | 2016-11-04 | 積水化成品工業株式会社 | Polystyrene-based resin foam sheet, laminate sheet and container |
| JP2020147746A (en) * | 2019-03-06 | 2020-09-17 | 東京インキ株式会社 | Gravure printing ink composition for styrene film for heat lamination |
| JP2020200408A (en) * | 2019-06-12 | 2020-12-17 | 東京インキ株式会社 | Gravure printing ink composition for styrene substrate, laminate, and packaging container |
-
2001
- 2001-07-05 JP JP2001204205A patent/JP3715908B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006137044A (en) * | 2004-11-11 | 2006-06-01 | Nakamoto Pakkusu Kk | Polystyrene laminated material used for molding electronic oven container |
| JP2006264024A (en) * | 2005-03-23 | 2006-10-05 | Sekisui Plastics Co Ltd | Polystyrenic resin laminated foamed sheet, its manufacturing method and manufacturing method of molded product |
| JP4516869B2 (en) * | 2005-03-23 | 2010-08-04 | 積水化成品工業株式会社 | Polystyrene resin laminated foam sheet, method for producing the same, and method for producing a molded product |
| JP2007231148A (en) * | 2006-03-01 | 2007-09-13 | Tokyo Printing Ink Mfg Co Ltd | Water-based printing ink for lamination and laminated sheet produced by using the same |
| JP2016188301A (en) * | 2015-03-30 | 2016-11-04 | 積水化成品工業株式会社 | Polystyrene-based resin foam sheet, laminate sheet and container |
| JP2020147746A (en) * | 2019-03-06 | 2020-09-17 | 東京インキ株式会社 | Gravure printing ink composition for styrene film for heat lamination |
| JP2020200408A (en) * | 2019-06-12 | 2020-12-17 | 東京インキ株式会社 | Gravure printing ink composition for styrene substrate, laminate, and packaging container |
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|---|---|
| JP3715908B2 (en) | 2005-11-16 |
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