JPH04212894A - Data concealing and display sheet and preparation thereof - Google Patents
Data concealing and display sheet and preparation thereofInfo
- Publication number
- JPH04212894A JPH04212894A JP2956691A JP2956691A JPH04212894A JP H04212894 A JPH04212894 A JP H04212894A JP 2956691 A JP2956691 A JP 2956691A JP 2956691 A JP2956691 A JP 2956691A JP H04212894 A JPH04212894 A JP H04212894A
- Authority
- JP
- Japan
- Prior art keywords
- film
- paper
- data
- sheet
- display sheet
- 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
- 229920000098 polyolefin Polymers 0.000 claims abstract description 29
- 239000012790 adhesive layer Substances 0.000 claims abstract description 15
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 8
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 8
- 238000010030 laminating Methods 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 14
- 239000004698 Polyethylene Substances 0.000 claims description 13
- 229920000573 polyethylene Polymers 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000003475 lamination Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000007740 vapor deposition Methods 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 41
- 229920002799 BoPET Polymers 0.000 description 30
- 239000011888 foil Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 206010040844 Skin exfoliation Diseases 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、情報隠蔽、表示シート
およびその製造方法であって、例えば郵送時に隠蔽する
必要のある情報が予め表示されたはがき通信文面上に積
層接着されて文面を隠蔽し、受信人は該情報隠蔽、表示
シートの一部を層間剥離させることによって通信文を視
認できるはがき用リード紙等に使い得る情報隠蔽、表示
シートを提供することにある。[Industrial Application Field] The present invention relates to an information hiding and display sheet and a method for manufacturing the same, in which, for example, information that needs to be hidden during mailing is laminated and glued onto the message surface of a postcard on which information that needs to be hidden is displayed in advance to hide the message. However, it is an object of the present invention to provide an information hiding/displaying sheet that can be used for postcard lead paper, etc., in which the recipient can visually recognize the message by peeling off a part of the information hiding/displaying sheet.
【０００２】0002
【従来の技術】郵便物は、大別してはがきと封書とがあ
り、はがきは費用が安く、取扱いも容易であって広く利
用されている。2. Description of the Related Art Postal items can be broadly classified into postcards and sealed letters. Postcards are widely used because they are inexpensive and easy to handle.
【０００３】しかし、はがきは名宛人以外の第三者も簡
単に読むことができるため、プライバシーの保持には問
題がある。[0003] However, since postcards can be easily read by third parties other than the addressee, there is a problem in maintaining privacy.
【０００４】従って、銀行残高通知書、税金通知書その
他顧客のプライバシーを保護する必要があるものは封書
によって行われているが、封書は書類を封筒に入れるこ
と、封筒をシールすること等の煩雑な作業を伴い、官公
庁、会社等毎日大量の郵便物を処理する処では作業能率
が悪いという欠点がある。[0004] Therefore, bank balance notices, tax notices, and other matters that need to protect customer privacy are sent by sealed letter, but sealed letters involve the hassle of putting documents in an envelope and sealing the envelope. It involves a lot of work, and has the disadvantage of poor work efficiency in places such as government offices and companies that process a large amount of mail every day.
【０００５】近年、はがきの取扱い容易性に着目し、表
面を被覆処理するためのリード紙が提案されている。[0005] In recent years, attention has been focused on the ease of handling of postcards, and lead paper for surface coating has been proposed.
【０００６】従来、第３図のようにリード紙２０は、紙
２１に押出しポリエチレン（ＰＥ）フィルム２２、Ａｌ
箔２３、高温押出しＰＥフィルム２４、低温押出しＰＥ
フィルム２５、ポリエチレンテレフタレート（ＰＥＴ）
フィルム２６、粘着剤層２７が順次積層されて構成され
ており、未使用時には粘着剤層２７面に剥離紙Ｋが積層
されている。Conventionally, the lead paper 20 as shown in FIG.
Foil 23, high temperature extrusion PE film 24, low temperature extrusion PE
Film 25, polyethylene terephthalate (PET)
It is constructed by laminating a film 26 and an adhesive layer 27 in this order, and when not in use, a release paper K is laminated on the surface of the adhesive layer 27.
【０００７】前記リード紙２０は、使用に当たり剥離紙
Ｋを剥取って粘着剤層２７の面で、第４図に示すように
隠蔽する必要のある情報が予め表示されたはがきＨの通
信文面上に接着すれば、通信文面はリード紙２０に隠蔽
された状態で郵送される。また、隠蔽する必要のない情
報は、このリード紙２０の表面に表示される。When the lead paper 20 is used, the release paper K is peeled off and the surface of the adhesive layer 27 is used to cover the communication surface of the postcard H on which information that needs to be hidden is displayed in advance, as shown in FIG. If the message is attached to the lead paper 20, the message will be mailed while being hidden by the lead paper 20. Further, information that does not need to be hidden is displayed on the surface of this lead paper 20.
【０００８】他方、受信人が第４図に示すリード紙２０
を剥離しようとすると、該リード紙２０は低温押出しＰ
Ｅフィルム２５とＰＥＴフィルム２６との間で層間剥離
をおこし、はがきＨ面にＰＥＴフィルム２６が残り、受
信人は透明なＰＥＴフィルム２６を通して通信文を視認
することができる。On the other hand, if the recipient receives the lead paper 20 shown in FIG.
When trying to peel off the lead paper 20, the low temperature extrusion P
Delamination occurs between the E film 25 and the PET film 26, and the PET film 26 remains on the H side of the postcard, allowing the recipient to visually recognize the message through the transparent PET film 26.
【０００９】[0009]
【本発明が解決しようとする課題】上述従来のリード紙
は、紙、ＰＥフィルム、Ａｌ箔、２７０〜３３０℃の高
温押出しＰＥフィルム、２３０〜２７０℃の低温押出し
ＰＥフィルム、ＰＥＴフィルム、粘着剤層の７層にも積
層されたものであり、ＰＥフィルムは約１３μｍ、Ａｌ
箔は約７μｍ、ＰＥＴフィルムは約１２μｍと夫々は薄
いものであるが、全体としてはかなりの厚さになる。[Problems to be Solved by the Invention] The above-mentioned conventional lead papers include paper, PE film, Al foil, high-temperature extruded PE film at 270-330°C, low-temperature extruded PE film at 230-270°C, PET film, and adhesive. The PE film is approximately 13 μm thick, and the aluminum layer is laminated with 7 layers.
Although the foil is approximately 7 μm thick and the PET film is approximately 12 μm thin, the overall thickness is quite large.
【００１０】しかも、前記のリード紙を製造するには各
フィルム、Ａｌ箔を用い、ＰＥフィィルムについても高
温押出し法、低温押出し法を使い分ける等多数の工程を
要し、煩雑であるばかりか、コスト高となる欠点がある
。[0010] Moreover, manufacturing the lead paper described above requires a number of processes such as using various films and Al foils, and also using high temperature extrusion method and low temperature extrusion method for PE film, which is not only complicated but also costly. It has the disadvantage of being expensive.
【００１１】本発明は、前述従来の欠点を改善するため
研究の結果達成されたものであって、リード紙の厚さを
薄くすることができると共に、リード紙としての目的を
充分に果たすことができ、また簡単に製造することがで
きる情報隠蔽、表示シートおよびその製造方法を提供す
るものである。The present invention was achieved as a result of research to improve the above-mentioned conventional drawbacks, and it is possible to reduce the thickness of the lead paper and to sufficiently fulfill the purpose as a lead paper. To provide an information hiding/display sheet that can be easily manufactured, and a method for manufacturing the same.
【００１２】0012
【課題を解決するための手段】第１の発明は、紙裏面に
押出しラミネート法で形成されたポリオレフィン（ＰＯ
）フィルム他面に、Ａｌ蒸着膜を有する透明なＰＥＴフ
ィルムが、該Ａｌ蒸着膜と前記ＰＯフィルムとが面接す
るように接着積層されており、該ＰＥＴフィルムの反対
面に粘着剤層が積層されているという構成のものであリ
、第３の発明は前記ＰＯフィルムがポリエチレン（ＰＥ
）フィルムという構成のものである。[Means for Solving the Problems] The first invention provides polyolefin (PO) formed on the back side of paper by extrusion lamination.
) A transparent PET film having an Al vapor deposited film is adhesively laminated on the other side of the film so that the Al vapor deposited film and the PO film face each other, and an adhesive layer is laminated on the opposite side of the PET film. In the third invention, the PO film is made of polyethylene (PE).
) It is composed of a film.
【００１３】第２の発明は、Ａｌ蒸着膜を有する透明な
ＰＥＴフィルムのＡｌ蒸着膜面と紙の一面とを、２７０
〜３３０℃の高温で押出されたＰＯフィルムを押出しラ
ミネート法により接着積層した後、該ＰＥＴフィルムの
他面に粘着剤層を積層するという構成からなる製造方法
である。[0013] In the second invention, the Al-deposited film surface of the transparent PET film having the Al-deposited film and one side of the paper are separated by 270
This manufacturing method consists of adhesively laminating a PO film extruded at a high temperature of ~330°C by an extrusion lamination method, and then laminating an adhesive layer on the other side of the PET film.
【００１４】[0014]
【作用】本発明は以上の如き構成のものからなり、紙に
２７０〜３３０℃の高温押出し法によってＰＯフィルム
を積層接着すると同時に、該ＰＯフィルム他面に、表面
にＡｌ蒸着膜を有する透明なＰＥＴフィルムを該Ａｌ蒸
着膜面とＰＯフィルム面とが面接するように積層接着さ
れ、前記ＰＥＴフィルムの反対面に粘着剤層を積層して
シートとされる。[Function] The present invention is constructed as described above, and at the same time, a PO film is laminated and adhered to paper by high temperature extrusion method at 270 to 330°C, and at the same time, a transparent film having an Al vapor deposited film on the other side of the PO film is attached to the paper. A PET film is laminated and bonded so that the Al vapor-deposited film surface and the PO film surface face each other, and an adhesive layer is laminated on the opposite surface of the PET film to form a sheet.
【００１５】茲に、Ａｌ蒸着膜を有するＰＥＴフィルム
は市販されているものがそのまま適用でき、また紙に積
層形成されているＰＯフィルムは、２７０〜３３０℃の
比較的高い高温押出し法によるので、ＰＯフィルムは紙
及びＰＥＴフィルムのＡｌ蒸着膜と強固に接着している
。Furthermore, commercially available PET films with Al deposited films can be used as they are, and PO films laminated on paper are made by extrusion at a relatively high temperature of 270 to 330°C. The PO film is firmly adhered to the Al deposited film of the paper and PET film.
【００１６】ＰＯとしてはポリエチレン、ポリプロピレ
ン等何れでも良いが、汎用的な低密度ポリエチレンが使
い易い。尚、前記ＰＯには香料その他を添加含有させる
こともできる。また、紙としては天然パルプ紙のみに限
定されるものではなく、化繊紙、合成紙、不織布、プラ
スチックフィルム等使い得る。[0016] As PO, polyethylene, polypropylene, or the like may be used, but general-purpose low-density polyethylene is easily used. Incidentally, the above PO can also contain fragrances and the like. Furthermore, the paper is not limited to natural pulp paper, and may be used such as synthetic fiber paper, synthetic paper, nonwoven fabric, and plastic film.
【００１７】本発明は、未使用の場合には剥離紙を積層
した状態とされており、使用するときは剥離紙を剥がし
、粘着剤層面を隠蔽すべき情報面に被せて接着する。
これによって隠蔽すべき情報は、本発明のシートによっ
て完全に隠蔽されて読取る事ができない。また、隠蔽す
る必要のない情報は本発明のシートの表面にそのまま表
示すれば良い。[0017] In the present invention, when not in use, a release paper is laminated, and when used, the release paper is peeled off and the adhesive layer surface is placed over the information surface to be hidden and adhered. As a result, the information to be hidden is completely hidden by the sheet of the present invention and cannot be read. Furthermore, information that does not need to be hidden may be displayed as is on the surface of the sheet of the present invention.
【００１８】他方、情報の受信人は本発明のシートの一
部を剥離しようとすると、該シートは透明なＰＥＴフィ
ルムを残して層間剥離される。つまり、ＰＥＴフィルム
に形成されているＡｌ蒸着膜は通常の状態では剥離脱落
するおそれはないが、紙との間にあるＰＯフィルムが２
７０〜３３０℃の高温押出し法で形成されているため、
該ＰＯフィルムと強固に接着しており、本発明のシート
を剥離しようとすると、Ａｌ蒸着膜はＰＯフィルムに引
付けられてＰＥＴフィルムから剥がされる。従って、受
信人ははがき面に残された透明なＰＥＴフィルムを通し
て情報を読取ることができる。On the other hand, when the recipient of the information attempts to peel off a portion of the sheet of the present invention, the sheet is delaminated leaving behind a transparent PET film. In other words, the Al deposited film formed on the PET film has no risk of peeling off under normal conditions, but the PO film between it and the paper is
Because it is formed by high temperature extrusion method at 70-330℃,
It is strongly adhered to the PO film, and when an attempt is made to peel off the sheet of the present invention, the Al vapor-deposited film is attracted to the PO film and is peeled off from the PET film. Therefore, the recipient can read the information through the transparent PET film left on the postcard surface.
【００１９】即ち、本発明は実質的に紙、ＰＯフィルム
、ＰＥＴフィルムの３層のものからなり、従って、従来
のリード紙と比較すると積層数が少ないために薄く、か
つより軽くすることができる。That is, the present invention is substantially composed of three layers of paper, PO film, and PET film, and therefore, compared to conventional lead paper, the number of layers is smaller, so it can be made thinner and lighter. .
【００２０】更に、従来のリード紙に比較して積層数が
少ないため原料面及び工程面も簡略化されるから、コス
トも低廉ならしめることができる。Furthermore, since the number of laminated layers is smaller than that of conventional lead paper, raw materials and manufacturing processes are simplified, so that costs can be reduced.
【００２１】[0021]
【実施例】第１図は本発明の一実施例を示したものであ
るが、次に図面を参照して本発明を具体的に説明する。
本発明の情報隠蔽、表示シート１は、紙２裏面にＰＯフ
ィルム３が積層接着されており、該ＰＯフィルム３他面
には、透明なＰＥＴフィルム４の一面にＡｌ蒸着膜５が
形成されたＰＥＴフィルム４が、該Ａｌ蒸着膜５と面接
するように積層接着され、さらに該ＰＥＴフィルム４他
面に粘着剤層６が積層されたもので、粘着剤層６を保護
するため、剥離紙７が積層されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows one embodiment of the present invention. Next, the present invention will be specifically explained with reference to the drawings. The information hiding/displaying sheet 1 of the present invention has a PO film 3 laminated and adhered to the back side of a paper 2, and an Al vapor deposited film 5 is formed on one side of a transparent PET film 4 on the other side of the PO film 3. A PET film 4 is laminated and bonded so as to face the Al vapor deposited film 5, and an adhesive layer 6 is further laminated on the other side of the PET film 4. To protect the adhesive layer 6, a release paper 7 is applied. are layered.
【００２２】前記ＰＯフィルム３は２７０〜３３０℃の
高温押出し法によって積層されたもので、その厚さは約
１３μｍ程度である。The PO film 3 is laminated by high-temperature extrusion at 270 to 330° C. and has a thickness of about 13 μm.
【００２３】また、透明なＰＥＴフィルム４は、厚さ約
１３μｍで、その一面には、真空蒸着法で形成されたＡ
ｌ蒸着膜５（１μｍ以下）が形成されており、該Ａｌ蒸
着膜５の面がＰＯフィルム３と接着されており、さらに
ＰＥＴフィルム４の反対面に粘着剤層６が積層されたも
のである。The transparent PET film 4 has a thickness of about 13 μm, and one surface of the transparent PET film 4 has an A film formed by vacuum evaporation.
An Al vapor-deposited film 5 (1 μm or less) is formed, the surface of the Al vapor-deposited film 5 is adhered to the PO film 3, and an adhesive layer 6 is laminated on the opposite surface of the PET film 4. .
【００２４】前記ＰＯフィルム３は２７０〜３３０℃の
高温押出し法によって形成されているため、紙２及びＡ
ｌ蒸着膜５と強固に接着している。[0024] Since the PO film 3 is formed by high-temperature extrusion at 270 to 330°C, the paper 2 and A
l It is firmly adhered to the vapor deposited film 5.
【００２５】本発明の情報隠蔽、表示シート１をはがき
用リード紙として使用する場合、該シート１は、未使用
時には剥離紙７が接着された状態とされており、使用す
るときは剥離紙７を剥がし、第２図に示すように粘着剤
層６で、該シート１で隠蔽する必要のある情報が表示さ
れたはがきＨの通信文面に貼付する。尚、隠蔽する必要
のない情報は該シート１の表面に直接表示できる。When the information hiding/displaying sheet 1 of the present invention is used as a lead paper for postcards, the sheet 1 has a release paper 7 adhered to it when not in use, and when used, the release paper 7 is attached to the sheet 1. The sheet 1 is peeled off and pasted with the adhesive layer 6 onto the message surface of the postcard H on which the information that needs to be hidden with the sheet 1 is displayed, as shown in FIG. Note that information that does not need to be hidden can be displayed directly on the surface of the sheet 1.
【００２６】該シート１の貼付によってはがき通信文は
完全に隠蔽され、郵送時に第三者に読まれるおそれは全
くない。[0026] By pasting the sheet 1, the postcard message is completely hidden, and there is no risk of it being read by a third party when mailed.
【００２７】また、該シート１は実質的に紙２、ＰＯフ
ィルム３及びＰＥＴフィルム４の３層からなるもので、
薄く、かつ軽量であるから、通信費もはがきの切手代の
みでたりる。[0027] Further, the sheet 1 is substantially composed of three layers: paper 2, PO film 3, and PET film 4.
Because it is thin and lightweight, the only communication costs are the postage stamps.
【００２８】他方、はがきの受信人は、該シート１を層
間剥離しようとすると、第２図に示すようにＰＥＴフィ
ルム４を残して剥がれる。この時ＰＥＴフィルム４のＡ
ｌ蒸着膜５は、ＰＥＴフィルム４との接着強度よりもＰ
Ｏフィルム３との接着強度の方が強いので、ＰＯフィル
ム３に引付けられて剥がれ、はがき通信文面上にはＰＥ
Ｔフィルム４のみが残される。従って、受信人は透明な
ＰＥＴフィルム４を通して通信文を読取ることができる
。On the other hand, when the recipient of the postcard attempts to peel off the layers of the sheet 1, the sheets are peeled off leaving behind the PET film 4, as shown in FIG. At this time, A of PET film 4
l The vapor-deposited film 5 has a higher adhesive strength than the PET film 4.
Since the adhesive strength with the O film 3 is stronger, it is attracted to the PO film 3 and peels off, leaving PE on the postcard message.
Only the T film 4 is left. Therefore, the recipient can read the message through the transparent PET film 4.
【００２９】[0029]
【効果】以上の如く、本発明はＡｌ蒸着膜を有するＰＥ
Ｔフィルムを用いることによって、情報隠蔽、表示シー
トの積層数を少なくすることができるから、より軽量で
薄いものたらしめることができ、しかも情報隠蔽、表示
シートとしての通信文の隠蔽機能及び表示機能は、従来
と全く遜色なく発現せしめることができる。[Effect] As described above, the present invention provides PE with an Al-deposited film.
By using T-film, the number of laminated information hiding and display sheets can be reduced, making it lighter and thinner, and it also has the functions of concealing information and displaying correspondence as a display sheet. can be expressed with no inferiority to the conventional method.
【００３０】また、本発明の情報隠蔽、表示シートは、
原料数が少なく、従って積層数が少ないため、原料費が
少なく、工程数も少ないため、コストを低廉ならしめる
ことができる。[0030] Furthermore, the information hiding/displaying sheet of the present invention is as follows:
Since the number of raw materials is small and therefore the number of laminated layers is small, the cost of raw materials is low and the number of steps is also small, so costs can be kept low.
【００３１】尚、本発明の情報隠蔽、表示シートの用途
は、はがき用リード紙に限定されるものではなく、外装
包装材や装飾にも使われ得ることは勿論である。It should be noted that the use of the information hiding and display sheet of the present invention is not limited to lead paper for postcards, but can of course also be used for external packaging materials and decorations.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】本発明の一実施例の断面図である。FIG. 1 is a sectional view of an embodiment of the present invention.
【図２】本発明の情報隠蔽、表示シートの一部をはがき
面より層間剥離する状態の説明図である。FIG. 2 is an explanatory diagram of a state in which a part of the information hiding and display sheet of the present invention is delaminated from the postcard surface.
【図３】従来のリード紙の断面図である。FIG. 3 is a sectional view of a conventional lead paper.
【図４】従来のリード紙の一部をはがき面より層間剥離
する状態の説明図である。FIG. 4 is an explanatory diagram of a state in which a part of conventional lead paper is peeled off from the postcard surface.
１ 情報隠蔽、表示シート ２ 紙 ３ ＰＯフィルム ４ ＰＥＴフィルム ５ Ａｌ蒸着膜 ６ 粘着剤層 1 Information hiding and display sheet 2 Paper 3 PO film 4 PET film 5 Al vapor deposited film 6 Adhesive layer
Claims (3)
されたポリオレフィンフィルムが、他面にＡｌ蒸着膜を
有する透明なポリエチレンテレフタレートフィルムの該
Ａｌ蒸着膜と、前記ポリオレフィンフィルムとが面接す
るように接着積層されており、該ポリエチレンテレフタ
レートフィルムの反対面に粘着剤層が積層されているこ
とを特徴とする情報隠蔽、表示シート。1. A polyolefin film formed by an extrusion lamination method is bonded to the back side of the paper so that the Al-deposited film of a transparent polyethylene terephthalate film having an Al-deposited film on the other side faces the polyolefin film. 1. An information hiding and display sheet, characterized in that the polyethylene terephthalate film is laminated and an adhesive layer is laminated on the opposite side of the polyethylene terephthalate film.
ンテレフタレートフィルムのＡｌ蒸着膜面と紙の一面と
を、２７０〜３３０℃の高温で押出されたポリオレフィ
ンフィルムを押出しラミネート法により接着積層した後
、該ポリエチレンテレフタレートフィルムの他面に粘着
剤層を積層することを特徴とする情報隠蔽、表示シート
の製造方法。2. After adhesively laminating the Al-deposited film side of the transparent polyethylene terephthalate film having the Al-deposited film and one side of the paper by an extrusion lamination method using a polyolefin film extruded at a high temperature of 270 to 330°C, A method for producing an information hiding and display sheet, comprising laminating an adhesive layer on the other side of a polyethylene terephthalate film.
ンフィルムであることを特徴とする特許請求の範囲第１
項及び第２項記載の情報隠蔽、表示シート。3. Claim 1, wherein the polyolefin film is a polyethylene film.
Information concealment and display sheet described in Section 2 and Section 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2956691A JPH04212894A (en) | 1990-11-22 | 1991-01-30 | Data concealing and display sheet and preparation thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31829590 | 1990-11-22 | ||
| JP2-318295 | 1990-11-22 | ||
| JP2956691A JPH04212894A (en) | 1990-11-22 | 1991-01-30 | Data concealing and display sheet and preparation thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04212894A true JPH04212894A (en) | 1992-08-04 |
Family
ID=26367775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2956691A Pending JPH04212894A (en) | 1990-11-22 | 1991-01-30 | Data concealing and display sheet and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04212894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839763A (en) * | 1996-09-26 | 1998-11-24 | Mccannel; Duncan | Security card and method of manufacture |
| JP2006231708A (en) * | 2005-02-24 | 2006-09-07 | J-Film Corp | Laminated film, method for producing laminated film, and method for producing easily openable postcard |
-
1991
- 1991-01-30 JP JP2956691A patent/JPH04212894A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839763A (en) * | 1996-09-26 | 1998-11-24 | Mccannel; Duncan | Security card and method of manufacture |
| JP2006231708A (en) * | 2005-02-24 | 2006-09-07 | J-Film Corp | Laminated film, method for producing laminated film, and method for producing easily openable postcard |
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