JP3056562B2 - Easy peeling laminated film - Google Patents
Easy peeling laminated filmInfo
- Publication number
- JP3056562B2 JP3056562B2 JP3284198A JP28419891A JP3056562B2 JP 3056562 B2 JP3056562 B2 JP 3056562B2 JP 3284198 A JP3284198 A JP 3284198A JP 28419891 A JP28419891 A JP 28419891A JP 3056562 B2 JP3056562 B2 JP 3056562B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- paper
- deposited
- communication
- laminated 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.)
- Expired - Fee Related
Links
Landscapes
- Paper (AREA)
- Credit Cards Or The Like (AREA)
- Laminated Bodies (AREA)
- Physical Vapour Deposition (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、葉書等の伝達情報を隠
蔽し、秘密を保護するとともに、改竄を防止するために
使用する通信葉書の介在シートやラベルに用いられる易
剥離性積層フィルムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an easily peelable laminated film used for interleaving sheets and labels of communication postcards used to conceal transmitted information such as postcards, protect secrets, and prevent tampering. Things.
【0002】[0002]
【従来の技術】従来、伝達情報を隠蔽し得る通信用葉書
の介在シートやラベル等に関しては、高融点樹脂を素材
とした透明なフィルム(ポリエステルフィルム、ポリプ
ロピレンフィルム等)と、これよりも低融点であって、
かつ、透明な熱可塑性樹脂(例えばポリエチレン)の両
フィルムを熱融着(擬似接着)した接着力の小さいラミ
ネートフィルムの表裏両面に、エチレン−酢酸ビニル共
重合体や、エチレン−アクリル酸共重合体の感熱性樹脂
のフィルム層が設けられた四層の積層フィルムを、折り
返しができる通信用紙の相対する内面に挿入し、熱ロー
ル等で圧着して封をした隠蔽用通信用紙(葉書)等が提
案されている。このようにして郵送されて来た葉書等
は、その接着面を引き剥がすと、高融点樹脂フィルムと
低融点樹脂フィルムの界面から分かれ、しかも両フィル
ムが透明であるので、封書、葉書の相対する面の両者に
記載された文字が読める仕組となっている。2. Description of the Related Art Conventionally, as for an intervening sheet or label of a communication postcard capable of concealing transmitted information, a transparent film (polyester film, polypropylene film, etc.) made of a high melting point resin and a lower melting point than this are used. And
In addition, an ethylene-vinyl acetate copolymer or an ethylene-acrylic acid copolymer is provided on both front and back surfaces of a low-adhesion laminate film obtained by heat-sealing (pseudo-adhesion) both films of a transparent thermoplastic resin (eg, polyethylene). A concealment communication paper (postcard) or the like in which a four-layer laminated film provided with a heat-sensitive resin film layer is inserted into the opposing inner surfaces of the wrappable communication paper and sealed by pressing with a heat roll or the like. Proposed. The postcards and the like mailed in this manner are separated from the interface between the high-melting resin film and the low-melting resin film when the adhesive surface is peeled off, and since both films are transparent, the postcard and the postcard are opposite. The characters on both sides are readable.
【0003】また、樹脂フィルムや紙にアルミ蒸着、ア
ルミ箔の接着又はインクペーストの塗布等による、隠蔽
力のあるカバーシートに、前記の四層の透明な積層フィ
ルムよりなるシートを貼合してなる複合ラベルを葉書等
の隠蔽情報箇所に熱や粘着剤等で貼り合わせ、伝達情報
を隠蔽し得る通信用ラベル等も提案されている。Further, a sheet made of the above-mentioned four-layer transparent laminated film is bonded to a cover sheet having a hiding power by, for example, depositing aluminum on a resin film or paper, bonding aluminum foil, or applying an ink paste. A communication label or the like has been proposed in which a composite label is attached to a concealed information portion such as a postcard with heat, an adhesive, or the like to conceal transmitted information.
【0004】しかしながら、上記の隠蔽用葉書の介在シ
ートや複合ラベル等の高融点樹脂透明フィルムと低融点
フィルムの擬似接着箇所は、高融点樹脂フィルムと低融
点のポリエチレン系樹脂との界面であり、第3者が隠蔽
部分を剥離し、容易に中に記載された情報を読み取った
後、再び剥離面同士を重ね合せ、カバーシート遮蔽側、
あるいは通信用紙側から、熱や加圧等を施すことで再貼
着が可能であることから、情報を受け取る当事者は情報
が漏洩したか否かの判別がつかず好ましくないという問
題があった。また、透明な高融点の樹脂フィルムとポリ
エチレン系樹脂フィルムの擬似接着強度は、製造する温
度や外気温度の上昇で接着強度が強くなり、擬似接着部
分の剥離をスムーズに行い得ない等の問題点があった。
また、これら隠蔽用介在シートや複合ラベルは、積層数
が多いことから、製造費用も高くなる等の問題があっ
た。However, the quasi-adhesion point between the high melting point resin transparent film such as the interposition sheet and the composite label of the above concealment postcard and the low melting point film is an interface between the high melting point resin film and the low melting point polyethylene resin. After the third party peels off the concealed portion and easily reads the information described therein, the peeled surfaces are again overlapped, and the cover sheet shielding side,
Alternatively, since re-adhering is possible by applying heat, pressure, or the like from the communication paper side, there has been a problem that the party receiving the information cannot judge whether or not the information has leaked, which is not preferable. In addition, the pseudo-bonding strength between a transparent high-melting resin film and a polyethylene-based resin film is problematic in that the bonding strength increases as the manufacturing temperature or the outside air temperature rises, and the pseudo-bonded portion cannot be separated smoothly. was there.
In addition, these concealing intervening sheets and composite labels have a problem that the production cost is high because the number of laminations is large.
【0005】[0005]
【発明が解決しようとする課題】本発明は、擬似接着用
介在シート及び複合ラベルに係る従来技術における前述
の問題点を解決すべくなされたものであり、従って、本
発明は、第3者がこっそり情報を読み取った後の復元を
不可能にしたものであって、情報を提供する側、及び情
報を受け取る側が安心して情報のやり取りができ、しか
も、情報を受け取る一方の当事者が情報漏洩を即時に判
断でき、さらに、擬似接着面の剥離強度を温度が変って
も一定以下に保つことができ、さらに、隠蔽用介在シー
トや複合ラベルの層数を最小限にすることで、カールの
問題がなくなり、低費用で製造可能な改竄防止用の易剥
離性積層フィルムを提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the prior art relating to the pseudo-adhesive interposed sheet and the composite label. This makes it impossible to recover the information after reading it secretly, so that the information provider and the information receiver can exchange information with peace of mind, and one party receiving the information can immediately leak the information. In addition, the peel strength of the pseudo-adhesive surface can be kept below a certain level even when the temperature changes, and furthermore, by minimizing the number of layers of the interposing sheet for concealment and the composite label, the problem of curling can be reduced. An object of the present invention is to provide an easily peelable laminated film for preventing tampering, which can be manufactured at low cost.
【0006】[0006]
【課題を解決するための手段】本発明は、蒸着膜或いは
コーティング膜を設けた基材の少なくとも蒸着膜或いは
コーティング膜上に接着層を有する積層フィルムであっ
て、蒸着膜或いはコーティング膜と基材との接着強度が
20℃で200g/5cm幅未満であり、前記膜と接着
との20℃における接着強度が200g/5cm幅以上
であることを特徴とする易剥離フィルムである。SUMMARY OF THE INVENTION The present invention relates to a laminated film having an adhesive layer on at least a deposited film or a coating film of a substrate provided with a deposited film or a coating film. The adhesive strength at 20 ° C. is less than 200 g / 5 cm width, and the adhesive strength between the film and the adhesive at 20 ° C. is 200 g / 5 cm width or more.
【0007】本発明の易剥離性積層フィルムの一実施例
を図に基いて詳述する。図1は、本発明の基材4上に設
けた蒸着膜或いはコーティング膜8上に接着層3を設け
た易剥離性積層フィルム2の裏面に更に接着層3′を設
けたシートを、折り畳み可能な通信用紙1の通信事項を
印刷または記載した面を内側になるように折り畳んだ間
に挟んで(図2参照)通信用紙の両側面から加熱加圧接
着した通信用紙の一部を剥離した状態を示す部分拡大断
面図であって、基材4と蒸着膜あるいはコーティング膜
8との界面の接着強度が200g/5cm幅未満と弱い
ため、該界面が擬似接着界面となり該界面から剥離され
るものである。One embodiment of the easily peelable laminated film of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a foldable sheet in which an adhesive layer 3 'is further provided on the back surface of an easily peelable laminated film 2 in which an adhesive layer 3 is provided on a deposition film or a coating film 8 provided on a substrate 4 of the present invention. A state in which a part of the communication paper that has been heated and pressed and adhered from both sides of the communication paper is sandwiched between the folded sides of the communication paper 1 with the printed or written communication items facing inward (see FIG. 2). FIG. 5 is a partially enlarged cross-sectional view showing a pseudo-adhesion interface at the interface between the base material 4 and the vapor-deposited film or the coating film 8, which is less than 200 g / 5 cm in width, and is peeled off from the interface. It is.
【0008】そして、該界面から一旦剥離した後は、特
に基材上に蒸着膜を設けた場合には熱や圧力によっても
再接着することがない。また蒸着膜或いはコーティング
膜は一般に極めて薄いので蒸着膜を透してその下の文字
等は容易に読み取り可能であり、また基材としては一般
に透明な合成樹脂フィルムが用いられるので該基材の下
にある文字も読取り可能である。After the film is once peeled off from the interface, it does not adhere again even by heat or pressure, especially when a deposited film is provided on the substrate. In addition, since the deposited film or the coating film is generally very thin, characters and the like under the deposited film can be easily read through. Also, since a transparent synthetic resin film is generally used as the base material, Are also readable.
【0009】本発明における蒸着膜或いはコーティング
膜8と基材4との接着強度は20℃の温度で200g/
5cm幅未満であることが必須であり、200g/5c
m幅以上の接着強度となると、蒸着膜或いはコーティン
グ膜8と基材4との接着部分の接着強度が通信用紙1と
基材4との接着強度よりも強くなり、剥離するとき通信
用紙自体の紙間破断が生じ、通信用紙に記載された情報
を読み取ることが不可能になったり、或いは通信用紙と
接着層3との界面に剥離が生じ情報を確実に読み取るこ
とができなくなる。本発明において更に好ましい蒸着膜
或いはコーティング膜8と基材4との20℃における接
着強度は5〜100g/5cm幅で、かつ100℃にお
ける接着強度も5〜200g/5cm幅である。In the present invention, the adhesion strength between the deposited film or the coating film 8 and the substrate 4 is 200 g / at a temperature of 20 ° C.
It is essential that the width is less than 5 cm, and 200 g / 5 c
When the adhesive strength becomes not less than m width, the adhesive strength of the adhesive portion between the vapor deposition film or the coating film 8 and the base material 4 becomes stronger than the adhesive strength between the communication paper 1 and the base material 4, and when the communication paper itself is peeled off. A break occurs between the sheets, making it impossible to read the information written on the communication sheet, or separating at the interface between the communication sheet and the adhesive layer 3 so that the information cannot be read reliably. In the present invention, the more preferable adhesion strength between the deposited film or the coating film 8 and the substrate 4 at 20 ° C. is 5 to 100 g / 5 cm width, and the adhesion strength at 100 ° C. is also 5 to 200 g / 5 cm width.
【0010】本発明において用いられる蒸着膜、或いは
コーティング膜としては、例えば蒸着物質として、金属
(アルミニウム、ニッケル、クロム等)やガラス質の物
質(酸化系のチタン、錫、インジウム、珪素、アルミニ
ウム、マグネシウム、弗化マグネシウム等)であり、通
常の真空蒸着の他、スパッタリング、イオンプレーティ
ング等の真空処理加工等で基材面上に形成される。ま
た、コーティング膜形成剤としては、シリコーン樹脂
や、樹脂水性エマルジョンや樹脂接着剤溶液にコロイダ
ルシリカを配合した塗布型の液状樹脂が用いられる。ま
た、蒸着物質の膜厚は、一般的には、50Å〜2000
Å程度であり、100Å〜1000Åの範囲が好まし
い。コーティング膜の厚さは0.1〜5μm、好ましく
は0.3〜1μmである。The deposited film or the coating film used in the present invention may be, for example, a metal (aluminum, nickel, chromium, etc.) or a vitreous substance (oxidized titanium, tin, indium, silicon, aluminum, etc.). Magnesium, magnesium fluoride, etc.), and is formed on the substrate surface by vacuum processing such as sputtering and ion plating, in addition to normal vacuum deposition. Further, as the coating film forming agent, a silicone resin or a coating type liquid resin obtained by mixing colloidal silica with a resin aqueous emulsion or a resin adhesive solution is used. In addition, the thickness of the deposition material is generally 50 to 2,000.
Å, preferably in the range of 100Å-1000Å. The thickness of the coating film is 0.1-5 μm, preferably 0.3-1 μm.
【0011】また、本発明に使用される基材としては、
ポリエチレン、ポリプロピレン、ポリエステル、ポリス
チレン、ポリ塩化ビニル、ポリフッ化ビニリデン、セロ
ファン等の透明フィルム、トレーシングペーパーがあ
る。Further, the substrate used in the present invention includes:
There are transparent films such as polyethylene, polypropylene, polyester, polystyrene, polyvinyl chloride, polyvinylidene fluoride and cellophane, and tracing paper.
【0012】基材の厚さは、通常6〜100μm程度で
あり、好ましくは9〜50μm程度の範囲であって、二
軸延伸樹脂フィルムは肉厚の薄いものが使用できるので
更に好ましい。The thickness of the substrate is usually about 6 to 100 μm, preferably about 9 to 50 μm, and the biaxially stretched resin film is more preferable because a thinner one can be used.
【0013】接着層3,3′は、融点60〜164℃の
低密度ポリエチレン、エチレン−アクリル酸共重合体、
エチレン−酢酸ビニル共重合体等を蒸着膜或いはコーテ
ィング層8又は基材4上に溶融押出ラミネートしたり、
アクリル系樹脂溶液或いはポリ酢酸ビニルエマルジョン
を塗布乾燥することにより形成される。この接着物質は
蒸着膜或いはコーティング層8と或いは基材4と通信用
紙との接着強度が20℃において200g/5cm幅以
上のものであればよく、またその厚さは3〜50μmが
好ましい。The adhesive layers 3, 3 'are made of low-density polyethylene having a melting point of 60 to 164 ° C., ethylene-acrylic acid copolymer,
Melt-extrusion lamination of an ethylene-vinyl acetate copolymer or the like on a vapor-deposited film or a coating layer 8 or a base material 4;
It is formed by applying and drying an acrylic resin solution or a polyvinyl acetate emulsion. The adhesive substance may have an adhesive strength of 200 g / 5 cm or more at 20 ° C. between the deposited film or the coating layer 8 or the substrate 4 and the communication paper, and the thickness is preferably 3 to 50 μm.
【0014】また、この接着層3,3′には、通常の添
加剤、及び補助剤、例えば、潤滑剤、ブロッキング防止
剤、及び静電気防止剤等を通常量含んでもよく、更に接
着層表面に凹凸形状を付与し、耐ブロッキング、滑り性
向上を図ってもよい。また、接着層と通信用紙面等の接
着性を向上させるため、例えば、酸化処理(コロナ処
理、オゾン処理等)等を施してもよい。The adhesive layers 3 and 3 'may contain ordinary amounts of ordinary additives and auxiliaries, such as lubricants, antiblocking agents and antistatic agents. An uneven shape may be provided to improve blocking resistance and slipperiness. Further, in order to improve the adhesiveness between the adhesive layer and the communication paper surface or the like, for example, an oxidation treatment (corona treatment, ozone treatment, or the like) may be performed.
【0015】また、本発明の図1および図2で示される
通信紙の紙1は、例えばパルプ紙、コート紙、サイズプ
レス加工紙、ポリエチレンラミネート紙等の他、合成
紙、金属箔、金属蒸着フィルムやこれらの積層体等から
作られたものであって、両紙片1,1の外面に、受取人
や差出人の住所、氏名(名称)等が記載され、両紙片の
内面には、隠蔽用の通信文等が印字できるものであれば
特に制限はない。The communication paper 1 shown in FIGS. 1 and 2 of the present invention is, for example, pulp paper, coated paper, size-pressed paper, polyethylene laminated paper, etc., as well as synthetic paper, metal foil, metal vapor-deposited paper. It is made of a film or a laminate thereof, and the address, name, etc. of the recipient and sender are written on the outer surface of the two pieces of paper 1, 1 and the inner surface of the two pieces of paper is used for concealment. There is no particular limitation as long as the message can be printed.
【0016】本発明の易剥離性積層フィルムはラベル的
な使用もできる。即ち、図3〜図5に示すように蒸着或
いはコーティングフィルム4の1片にパルプ紙5等を前
述の接着層3で貼り合せたものであって、通常葉書以下
の形状で通常葉書1の秘密情報箇所を充分に隠蔽できる
ものである。尚、本ラベル6の表面には、文字や印刷、
或いは、表やグラフ等が印字されてもよい。The easily peelable laminated film of the present invention can be used as a label. That is, as shown in FIGS. 3 to 5, a pulp paper 5 or the like is attached to one piece of the vapor-deposited or coated film 4 with the above-mentioned adhesive layer 3 and has a shape smaller than that of a normal postcard. The information location can be sufficiently hidden. In addition, on the surface of this label 6, characters, printing,
Alternatively, a table, a graph, or the like may be printed.
【0017】本発明の易剥離性積層フィルムを通信紙1
内面(図2)、或いは葉書面1にラベル6として貼り合
せる(図4)方法としては、熱風や熱ロール等で接着層
を加熱し、一定のロール間隔、圧力負荷を備えた加熱加
圧ロールで圧着させて行う。The easily peelable laminated film of the present invention is used for communication paper 1
As a method of bonding the label 6 to the inner surface (FIG. 2) or the postcard 1 as a label 6 (FIG. 4), the adhesive layer is heated by hot air, a hot roll, or the like, and a heating / pressing roll provided with a constant roll interval and a pressure load. And press-fit.
【0018】また、本積層シートの用途の通信葉書やラ
ベルにおいては、一方の紙(1または1′)の端縁の内
側2〜5mm内に、擬似接着体5の擬似接着部分7に達
する深さまでミシン目、又はスリット等を設け、擬似接
着部分7が容易に剥離できるようにしてもよい。In a communication postcard or a label for use of the present laminated sheet, a depth reaching the pseudo bonding portion 7 of the pseudo bonding body 5 is set within 2 to 5 mm inside the edge of one paper (1 or 1 '). A perforation or a slit may be provided so that the pseudo-adhesion portion 7 can be easily peeled off.
【0019】[0019]
【作用】差出人側において、蒸着膜或いはコーティング
膜を設けた基材の蒸着膜或いはコーティング膜面に接着
層を有する積層フィルムを、隠蔽情報が記載された2重
折り以上の通信紙の内面、又は葉書面にラベルとして貼
り合せた通信用葉書は、受け取り側において、擬似接着
層である蒸着膜と蒸着されたフィルムの界面で剥離展開
され、蒸着膜やコーティング膜、及び、蒸着或いはコー
ティングされたフィルムを通して隠蔽情報を読み取るこ
とができる。On the sender's side, a laminated film having an adhesive layer on a vapor-deposited film or a coating film surface of a substrate provided with a vapor-deposited film or a coating film is placed on the inner surface of a double-folded or more folded communication paper on which concealment information is described, or On the receiving side, the communication postcard pasted as a label on the postcard is peeled off and developed at the interface between the deposited film and the deposited film, which is a pseudo-adhesive layer, and the deposited or coated film, and the deposited or coated film The concealment information can be read through.
【0020】また、剥離展開された蒸着膜と蒸着された
フィルムの相対面は、熱や圧力等を付与しても再接着が
起らず、しかも、接着層に転写された蒸着膜にクラック
等が発生するなど、情報漏洩が受け取り側に即断できる
ものである。Further, even if heat or pressure is applied, re-adhesion does not occur between the peeled and developed deposited film and the deposited film, and the deposited film transferred to the adhesive layer is not cracked. In such a case, information leakage can be immediately determined by the receiving side, for example, when an error occurs.
【0021】また、隠蔽情報が蒸着膜やコーティング膜
或いは蒸着或いはコーティングされたフィルムに保護さ
れることから、外部からの摩擦、汚染、水分等の影響も
防止できるものである。Further, since the concealment information is protected by a vapor-deposited film, a coating film, or a vapor-deposited or coated film, the influence of external friction, contamination, moisture and the like can be prevented.
【0022】[0022]
【効果】本発明の改竄防止用積層フィルムは、以上の構
成とすることで、第三者がこっそり情報を読み取ること
を不可能にしたものであって、情報を提供する側、及
び、情報を受け取る側が安心して情報のやり取りがで
き、しかも、情報を受け取る当事者が情報漏洩を即断で
きることに優れ、さらに、擬似接着面の剥離強度を一定
以下に保つことに優れ、さらに、隠蔽用葉書やラベルの
積層数を最小限に少なくすることができ、カール問題の
解決や低費用の製造を可能とする。The tamper-proof laminated film of the present invention, by adopting the above structure, makes it impossible for a third party to secretly read information. It is excellent in that the receiving side can exchange information with peace of mind, and that the party receiving the information can immediately determine the leakage of information, it is excellent in keeping the peel strength of the pseudo-adhesive surface below a certain level, and furthermore, it is excellent for concealment postcards and labels. The number of laminations can be minimized, so that the curling problem can be solved and low-cost manufacturing can be achieved.
【0023】[0023]
実施例1 厚さ500オングストロームのアルミニウム蒸着膜を有
する二軸延伸ポリプロピレンフィルム(厚さ25μm)
の両面に、接着層としてエチレン−酢酸ビニル共重合体
樹脂(酢酸ビニル含量20重量%)をラミネートした積
層フィルム(15μm/500Å/25μm/15μ
m)を、内面に印刷が施された上質紙(坪量157g/
m2 ) でできた2重折りの通信紙間にはさみ込み、加熱
温度125℃、回転速度3m/分の圧着ロール間に投入
し、通信紙と接着層を接着させて通信用葉書を得た。Example 1 Biaxially stretched polypropylene film having a thickness of 500 angstroms and having a deposited aluminum film (thickness: 25 μm)
Laminated film (15 μm / 500 ° / 25 μm / 15 μm) on both sides of which an ethylene-vinyl acetate copolymer resin (vinyl acetate content 20% by weight) was laminated as an adhesive layer.
m) was converted to a high-quality paper having an inner surface printed thereon (basis weight: 157 g /
m 2 ), and put between double-folded communication paper sheets, and put between pressure rolls at a heating temperature of 125 ° C. and a rotation speed of 3 m / min to bond the communication paper and the adhesive layer to obtain a communication postcard. .
【0024】得られた通信用葉書を巾5cmにカット
し、アルミニウム蒸着膜と二軸延伸ポリプロピレンフィ
ルム面との間、及び二軸延伸ポリプロピレンフィルムと
接着層との間、さらに、接着層と上質紙との接着強度や
擬似接着性、並びに、改竄防止性やその他(隠蔽情報の
確認等)を評価し、結果を表に示した。The obtained postcard for communication was cut to a width of 5 cm, and was cut between the aluminum vapor-deposited film and the surface of the biaxially stretched polypropylene film, between the biaxially stretched polypropylene film and the adhesive layer, and further between the adhesive layer and the high-quality paper. The adhesive strength and pseudo-adhesiveness, as well as anti-tampering properties and others (confirmation of concealment information, etc.) were evaluated, and the results are shown in the table.
【0025】実施例2 実施例1の蒸着フィルムの両面に、エチレン−酢酸ビニ
ル共重合体のトルエン溶液よりなるコーティング材〔東
洋モートン(株)製アドコート33G−1A〕を乾燥後
の厚さが5μmになる割合で塗布乾燥して接着層を形成
し、実施例1と同様にして通信用葉書を得、実施例1と
同様に評価した。結果を表に示す。Example 2 A coating material consisting of a toluene solution of an ethylene-vinyl acetate copolymer (Adcoat 33G-1A manufactured by Toyo Morton Co., Ltd.) was dried on both surfaces of the vapor-deposited film of Example 1 to a thickness of 5 μm. Then, an adhesive layer was formed by coating and drying at the following ratio, and a postcard for communication was obtained in the same manner as in Example 1, and evaluated in the same manner as in Example 1. The results are shown in the table.
【0026】実施例3〜4、比較例4 蒸着膜或いはコーティング膜の種類及び厚さ並びに蒸着
されるフィルム及びその厚さを表に示すように変更した
以外は、実施例1と同様にして通信用葉書を得、実施例
1と同様に評価し、結果を表1に示した。Examples 3-4, Comparative Example 4 Communication was performed in the same manner as in Example 1 except that the type and thickness of the deposited film or coating film and the film to be deposited and the thickness thereof were changed as shown in the table. A postcard was obtained and evaluated in the same manner as in Example 1. The results are shown in Table 1.
【0027】実施例5 下記配合からなるコーティング剤0.5g/m2 を片面
に塗布した二軸延伸ポリプロピレンフィルムの両面に、
エチレン−酢酸ビニル共重合体樹脂を15μm厚さでラ
ミネートした4層積層フィルムを実施例1と同様にして
評価し、結果を表に示した。 コーティング剤配合 (a)重合物−A:100重量部 (b)アルコール分散コロイダルシリカ(日産化学
(株)製メタノールシリカ):35重量部 (c)ポリオキシエチレンラウリルエーテル(界面活性
剤):15重量部 (d)メタノール:450重量部 但し、上記有効成分中の重合物Aは、下記成分(e)〜
(h)の配合液を60℃で5時間反応させ、20%アン
モニア水溶液で中和した樹脂コード剤である。 (e)2−ヒドロキシエチルアクリレート:99重量部 (f)アクリル酸:1重量部 (g)アゾビスイソブチロニトリル(反応触媒):0.
5重量部 (h)メタノール:200重量部Example 5 On both sides of a biaxially oriented polypropylene film coated on one side with a coating agent 0.5 g / m 2 having the following composition,
A four-layer laminated film obtained by laminating an ethylene-vinyl acetate copolymer resin to a thickness of 15 μm was evaluated in the same manner as in Example 1, and the results are shown in the table. (A) Polymer-A: 100 parts by weight (b) Alcohol-dispersed colloidal silica (methanol silica manufactured by Nissan Chemical Co., Ltd.): 35 parts by weight (c) Polyoxyethylene lauryl ether (surfactant): 15 Parts by weight (d) Methanol: 450 parts by weight However, the polymer A in the active ingredient is the following component (e) to
This is a resin cord material obtained by reacting the mixed solution of (h) at 60 ° C. for 5 hours and neutralizing with a 20% aqueous ammonia solution. (E) 2-hydroxyethyl acrylate: 99 parts by weight (f) Acrylic acid: 1 part by weight (g) Azobisisobutyronitrile (reaction catalyst): 0.1 part by weight
5 parts by weight (h) methanol: 200 parts by weight
【0028】実施例6 実施例1の蒸着フィルム側に上質紙(坪量52.3g/
m2 )をエチレン−酢酸ビニル共重合体樹脂(厚み15
μm)でラミネートし、反対の蒸着フィルム面にも同樹
脂をラミネートした蒸着積層ラベルを印刷された葉書の
裏面に重ね合せ、実施例1と同様にして評価し、結果を
表に示した。Example 6 Fine paper (52.3 g / basis weight)
m 2 ) with an ethylene-vinyl acetate copolymer resin (thickness 15
μm), and a vapor-deposited laminated label obtained by laminating the same resin on the opposite vapor-deposited film surface was superimposed on the back side of the printed postcard, evaluated in the same manner as in Example 1, and the results are shown in the table.
【0029】比較例1 ポリエチレンテレフタレートフィルム(PET)(厚み
16μm)の両面にエチレン−酢酸ビニル共重合体(酢
酸ビニル含量20重量%)を15μmの厚さで押出ラミ
ネートした3層積層フィルムを実施例1と同様にして評
価し、結果を表に示した。Comparative Example 1 A three-layer laminated film in which an ethylene-vinyl acetate copolymer (vinyl acetate content: 20% by weight) was extrusion-laminated to a thickness of 15 μm on both sides of a polyethylene terephthalate film (PET) (thickness: 16 μm). Evaluation was performed in the same manner as in Example 1, and the results are shown in the table.
【0030】比較例2,3 ポリエチレンテレフタレートフィルム(厚み16μm)
の片面に温度280℃と315℃で、厚み20μmの低
密度ポリエチレン樹脂(融点108℃)をラミネート
し、次にこのラミネートフィルム両面にエチレン−酢酸
ビニル共重合体(酢酸ビニル含量20重量%)を15μ
mラミネートして得た積層フィルムを実施例1と同様に
して評価し、結果を表に示す。尚、本積層フィルムはカ
ールが発生し、2重折りの通信紙内面に挿入して熱ロー
ルを通したら、積層フィルムが折れ曲った状態で一部熱
接着されていた。Comparative Examples 2 and 3 Polyethylene terephthalate film (16 μm thick)
A low-density polyethylene resin (melting point: 108 ° C.) having a thickness of 20 μm is laminated at 280 ° C. and 315 ° C. on one side, and then an ethylene-vinyl acetate copolymer (vinyl acetate content: 20% by weight) is coated on both sides of the laminated film. 15μ
The laminated film obtained by m-lamination was evaluated in the same manner as in Example 1, and the results are shown in the table. The laminated film was curled. When the laminated film was inserted into the inner surface of a double-folded communication paper and passed through a heat roll, the laminated film was partially thermally bonded in a bent state.
【0031】各層間の接着強度は、得られた通信用葉書
やラベルを5cm巾にカットし、テンシロンで前もって
一部剥離させた部分をチャックに取り付け、300mm
/分の引張りスピードで90°剥離の値を示した。The adhesive strength between the layers is determined by cutting the obtained postcard or label for communication to a width of 5 cm, attaching a part which has been peeled off in advance with Tensilon to a chuck,
A value of 90 ° peeling was shown at a pulling speed of / min.
【0032】擬似接着性の評価は、B層とC層との手に
よる引き剥し性を20℃と40℃で下記方法で判断し
た。 〇・・・良好 △・・・剥離が重い ×・・・剥離せずThe pseudo-adhesion was evaluated by the following method at 20.degree. C. and 40.degree. C. on the peelability of the layer B and the layer C by hand. 〇: good △: heavy peeling ×: no peeling
【0033】改竄防止性は、一旦、剥離した両紙面同士
を再度温度125℃の圧着ロールを通して評価した。 〇・・・接着せず ×・・・再接着The anti-falsification property was evaluated by passing the separated paper surfaces through a pressure roll at a temperature of 125 ° C. again. 〇 ・ ・ ・ No adhesion × ・ ・ ・ Re-adhesion
【0034】隠蔽情報の確認は、目視で判断した。 〇・・・良好 △・・・一部文字が浮いている。 ×・・・確認できない。 アルミニウム蒸着二軸延伸ポリプロピレンフィルム(O
PP)・・・二村化学(株)製 アルミニウム蒸着ポリプロピレンフィルム(CPP)・
・・東洋メタライジング アルミニウム蒸着ポリエチレンテレフタレートフィルム
・・・東洋メタライジング ケイ素酸化蒸着ポリエチレンテレフタレートフィルム
(12μm厚)・・・東洋インキ(GTフィルム) ポリエチレンテレフタレートフィルム(16μm厚)・
・・三菱樹脂(株)製(ダイヤホイル) エチレン−酢酸ビニル共重合体(EVA)・・・三菱油
化(V401S) エチレン−酢酸ビニル樹脂コーティング剤・・・東洋モ
ートン製アドコート(33G−1A)The concealment information was confirmed visually. 〇: Good △: Some characters are floating. ×: Cannot be confirmed. Aluminum deposited biaxially oriented polypropylene film (O
PP): Aluminum vapor-deposited polypropylene film (CPP) manufactured by Nimura Chemical Co., Ltd.
・ ・ Toyo Metallizing Aluminum evaporated polyethylene terephthalate film ・ ・ ・ Toyo Metallized silicon oxide evaporated polyethylene terephthalate film (12 μm thick) ・ ・ ・ Toyo Ink (GT film) Polyethylene terephthalate film (16 μm thick) ・
・ ・ Mitsubishi Resin Co., Ltd. (diafoil) Ethylene-vinyl acetate copolymer (EVA) ・ ・ ・ Mitsubishi Yuka (V401S) Ethylene-vinyl acetate resin coating agent ・ ・ ・ Toyo Morton Adcoat (33G-1A)
【0035】[0035]
【表】 【table】
【0036】[0036]
【図1】本発明の易剥離性積層フィルムを、内面に通信
事項を記載し2つ折りにした通信用紙に挟み加圧加熱接
着した葉書の一部を剥離した部分拡大断面図。FIG. 1 is a partially enlarged cross-sectional view in which a part of a postcard, which is obtained by sandwiching the easily peelable laminated film of the present invention between two folded communication papers in which communication items are described on an inner surface thereof and pressure-heated and adhered, is peeled off.
【図2】2つ折りにした通信用紙葉書に本発明の易剥離
性積層フィルムを挿入した状態を示す図。FIG. 2 is a diagram showing a state in which the easily peelable laminated film of the present invention is inserted into a folded communication paper postcard.
【図3】葉書の裏面に貼り合わせた本発明の積層フィル
ム(ラベル)を剥離する状態を示す図。FIG. 3 is a diagram showing a state in which a laminated film (label) of the present invention attached to the back of a postcard is peeled off.
【図4】葉書の裏面の隠蔽すべき部分に本発明の積層フ
ィルム(ラベル)を貼り合わせた状態を示す図。FIG. 4 is a view showing a state in which a laminated film (label) of the present invention is stuck to a part to be concealed on the back surface of a postcard.
【図5】葉書の裏面に貼り合わせた積層フィルム(ラベ
ル)を剥離する状態を示す図。FIG. 5 is a diagram showing a state in which a laminated film (label) attached to the back of a postcard is peeled off.
1…通信用紙、2…本発明の積層フィルム、3,3′…
接着層、4…蒸着フィルム膜或いはコーティング膜、6
…ラベル、7…擬似接着層1. Communication paper, 2. Laminated film of the present invention, 3, 3 '...
Adhesive layer, 4 ... evaporated film film or coating film, 6
... label, 7 ... pseudo adhesive layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI // B32B 7/12 B32B 7/12 D21H 5/00 B ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI // B32B 7/12 B32B 7/12 D21H 5/00 B
Claims (1)
けた基材(4)の少なくとも蒸着膜あるいはコーティン
グ膜上に接着層(3)を有する積層フィルムであって、
蒸着膜或いはコーティング膜(8)と基材(4)との接
着強度が20℃で200g/5cm幅未満であり、前記
膜8と接着層3との20℃における接着強度が200g
/5cm幅以上であることを特徴とする易剥離性積層フ
ィルム。1. A laminated film having an adhesive layer (3) on at least a deposited film or a coating film of a substrate (4) provided with a deposited film or a coating film (8),
The adhesive strength between the deposited film or the coating film (8) and the substrate (4) is less than 200 g / 5 cm width at 20 ° C., and the adhesive strength between the film 8 and the adhesive layer 3 at 20 ° C. is 200 g.
An easily peelable laminated film having a width of / 5 cm or more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3284198A JP3056562B2 (en) | 1991-10-04 | 1991-10-04 | Easy peeling laminated film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3284198A JP3056562B2 (en) | 1991-10-04 | 1991-10-04 | Easy peeling laminated film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06114993A JPH06114993A (en) | 1994-04-26 |
JP3056562B2 true JP3056562B2 (en) | 2000-06-26 |
Family
ID=17675438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3284198A Expired - Fee Related JP3056562B2 (en) | 1991-10-04 | 1991-10-04 | Easy peeling laminated film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3056562B2 (en) |
-
1991
- 1991-10-04 JP JP3284198A patent/JP3056562B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH06114993A (en) | 1994-04-26 |
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