JPH11107161A - Magnetic fibrous material, paper for preventing counterfeiting by using the same, and printed material preventing counterfeiting - Google Patents
Magnetic fibrous material, paper for preventing counterfeiting by using the same, and printed material preventing counterfeitingInfo
- Publication number
- JPH11107161A JPH11107161A JP28603597A JP28603597A JPH11107161A JP H11107161 A JPH11107161 A JP H11107161A JP 28603597 A JP28603597 A JP 28603597A JP 28603597 A JP28603597 A JP 28603597A JP H11107161 A JPH11107161 A JP H11107161A
- Authority
- JP
- Japan
- Prior art keywords
- fibrous material
- magnetic
- paper
- fibers
- preventing counterfeiting
- 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
- Chemical Or Physical Treatment Of Fibers (AREA)
- Artificial Filaments (AREA)
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、磁性繊維状物、及
びこれを使用した偽造防止用紙、及び偽造防止印刷物に
関する。詳しくは、磁性粒子を高速気流中衝撃法により
繊維状物表面に固着した磁性繊維状物、及びこれを用紙
中に含む偽造防止用紙、及びこの偽造防止用紙に印刷を
施した偽造防止印刷物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic fibrous material, anti-counterfeit paper using the same, and anti-counterfeit printed matter. More specifically, the present invention relates to a magnetic fibrous material in which magnetic particles are fixed to the surface of a fibrous material by a high-speed airflow impact method, a forgery-preventing paper containing the same in a paper, and a forgery-preventive printed matter on which the forgery-proof paper is printed.
【０００２】[0002]
【従来の技術】磁性物質を、用紙に含む偽造防止用紙は
種々提案されている。この偽造防止用紙は、何らかの手
段で用紙に含まれる磁性物質を検出することで、用紙が
偽造されたものであるか否かを判定できる特徴を有して
いる。2. Description of the Related Art Various forgery prevention papers containing a magnetic substance in paper have been proposed. The forgery prevention paper has a feature that it is possible to determine whether the paper is forged by detecting a magnetic substance contained in the paper by some means.
【０００３】例えば、特開平６−２８７０７号には、用
紙中に木材パルプのルーメン内部に強磁性体粒子を封入
したものを含ませ、磁場をかけることでこれを帯磁させ
て同一性を判定できる偽造防止用紙の提案がある。[0003] For example, Japanese Patent Application Laid-Open No. 6-28707 discloses that the identity of a paper pulp in which a ferromagnetic particle is enclosed in a lumen is determined by applying a magnetic field to magnetize the pulp. There is a proposal for anti-counterfeit paper.
【０００４】また、特開平７−１５６５８３号や、特開
平７−２１４９５５号には、合成樹脂溶液中に磁性金属
粉を混入し、ノズルから噴出させ凝固液中を通過させる
ことで磁性ポリマー素子を製造し、これを２〜１０ｍｍ
くらいの長さに切断し、パルプ繊維に抄き込んだ偽造防
止用紙の提案がある。Japanese Patent Application Laid-Open Nos. Hei 7-155683 and Hei 7-214955 disclose a magnetic polymer element by mixing a magnetic metal powder into a synthetic resin solution, ejecting it from a nozzle, and passing through a coagulating liquid. Manufacture this, 2-10mm
There is a proposal for anti-counterfeit paper that is cut into lengths and then pulp fibers.
【０００５】本発明者らは、これらの提案について検討
した結果、種々の問題点があることが判った。本発明者
らは、先ず前記特開平６−２８７０７号で提案された、
木材パルプのルーメン内部に磁性粒子を封入した磁性繊
維について検討した。木材パルプ繊維表面には、壁孔と
呼ばれる孔が開いており、また繊維内部はルーメンと呼
ばれる空隙部が存在する。この壁孔を通してルーメン内
部に種々の粉体を充填する方法がルーメンローディング
である。壁孔は、針葉樹晒クラフトパルプで通常直径
４．６μｍ前後、広葉樹晒クラフトパルプで２．２μｍ
前後と言われている。The present inventors have studied these proposals and found that there are various problems. The present inventors first proposed in JP-A-6-28707,
We examined magnetic fibers in which magnetic particles were encapsulated in the lumen of wood pulp. Holes called wall holes are formed in the surface of the wood pulp fiber, and voids called lumens exist inside the fiber. Lumen loading is a method of filling various powders into the lumen through the wall holes. The wall hole is usually about 4.6 μm in diameter for bleached softwood kraft pulp and 2.2 μm for bleached hardwood kraft pulp.
It is said to be around.
【０００６】磁性粒子をルーメンローディングでパルプ
繊維内部に充填する場合、充填量が多いほど本発明の目
的には好ましい。充填量が多ければ磁化したときの強さ
が大きくなり、検出も容易になるからである。本発明者
等が種々検討した結果では、磁性粒子は比重が大きく、
針状の形状のものが多いのでルーメン内部に充填されに
くく、またこうして得られた磁性繊維をスラリーに添加
して用紙を抄造するときに、ルーメン内部に充填された
磁性粉体の一部が壁孔から外部に離脱する問題点がある
ことが判った。When the magnetic particles are filled into the pulp fiber by lumen loading, the larger the filling amount, the more preferable for the purpose of the present invention. This is because if the filling amount is large, the strength when magnetized becomes large and the detection becomes easy. As a result of various studies by the present inventors, magnetic particles have a large specific gravity,
Many of the needle-like shapes make it difficult for the lumen to be filled into the lumen, and when the magnetic fibers obtained in this way are added to the slurry to form paper, some of the magnetic powder filled in the lumen is covered by a wall. It was found that there was a problem of detaching from the hole to the outside.
【０００７】また、上記特開平７−１５６５８３号や、
特開平７−２１４９５５号に提案された、磁性繊維は製
造装置が複雑になりすぎ、小ロットの磁性繊維の製造に
は経済的に引き合わないという問題点があることが判っ
た。また、得られた磁性繊維は自着性に乏しいため用紙
から磁性繊維が離脱しやすく、印刷中に磁性繊維がとら
れ、オフセット印刷ではブランケットを汚すという問題
点もあることが判った。[0007] Further, Japanese Patent Application Laid-Open No. 7-165683,
It has been found that the production apparatus for magnetic fibers proposed in Japanese Patent Application Laid-Open No. Hei 7-214595 has a problem that the production apparatus is too complicated and economically unsuitable for producing magnetic fibers of a small lot. In addition, it has been found that the obtained magnetic fiber has poor self-adhesiveness, so that the magnetic fiber is easily detached from the paper, and the magnetic fiber is removed during printing, and the blanket is soiled in offset printing.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、これらの問
題点を解決することを課題とする。即ち、磁化したとき
の強度が強く、磁性繊維状物を製造する際の磁性粒子の
歩留まりが良く、用紙製造中に繊維状物から磁性粒子が
離脱することが無く、簡単な装置で小ロットでも製造で
き、抄紙時の歩留まりもよい磁性繊維状物を得ること、
これを使用した偽造防止用紙、及びこの用紙を使用した
偽造防止印刷物を得ることを課題とする。SUMMARY OF THE INVENTION An object of the present invention is to solve these problems. In other words, the strength when magnetized is strong, the yield of magnetic particles when manufacturing magnetic fibrous materials is good, the magnetic particles do not separate from the fibrous materials during paper production, and even in a small lot with a simple device. To obtain a magnetic fibrous material that can be manufactured and has a good yield during papermaking,
An object of the present invention is to obtain a forgery prevention sheet using the same and a forgery prevention printed matter using the sheet.
【０００９】[0009]
【課題を解決するための手段】本発明の第一の発明は、
平均粒径が０．１〜１００μｍの磁性粒子を、高速気流
中衝撃法により重量平均繊維長が５ｍｍ以下の繊維状物
表面に固着したことを特徴とする磁性繊維状物である。Means for Solving the Problems The first invention of the present invention is:
A magnetic fibrous material characterized in that magnetic particles having an average particle size of 0.1 to 100 µm are fixed to the surface of a fibrous material having a weight average fiber length of 5 mm or less by a high-speed air current impact method.
【００１０】また、第二の発明は、こうして得られた磁
性繊維状物を用紙中に含むことを特徴とする偽造防止用
紙である。A second invention is a forgery prevention paper characterized in that the paper contains the magnetic fibrous material thus obtained.
【００１１】また、第三の発明は、こうして得られた偽
造防止用紙の表面に印刷を施したことを特徴とする偽造
防止印刷物である。[0011] A third invention is a forgery-prevention printed matter characterized by printing on the surface of the forgery-prevention paper thus obtained.
【００１２】[0012]
【発明の実施の形態】以下本発明を詳しく説明する。本
発明で使用する高速気流中衝撃法とは、２種類以上の材
料を高速の気流中で互いに衝突させて衝撃を与え材料の
改質を行う方法を意味し、これを実現する装置は、例え
ば特開平５−１６８８９５号、日本接着学会誌（Ｖｏ
ｌ．３３、Ｎｏ．５（１９９７）２６頁〜）などに開示
されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. The high-speed airflow impact method used in the present invention means a method in which two or more kinds of materials collide with each other in a high-speed airflow to give an impact, thereby reforming the material. JP-A-5-168895, Journal of the Adhesion Society of Japan (Vo
l. 33, no. 5 (1997) pp. 26-).
【００１３】この高速気流中衝撃法は粉体の改質方法と
して検討されたことはあったが、本発明のように磁性繊
維状物を得ることに検討されたことは全く無かった。本
発明者らは、この方法の特異な作用に注目して、繊維状
物に磁性粒子を固着することを試みた結果、特定の条件
下で本発明の課題を解決できることを見い出したもので
ある。Although the high-speed in-stream impact method has been studied as a method for modifying powder, it has never been studied to obtain a magnetic fibrous material as in the present invention. The present inventors have paid attention to the unique action of this method and have tried to fix magnetic particles to a fibrous material, and as a result, have found that the subject of the present invention can be solved under specific conditions. .
【００１４】以下、本発明を図面に基づいて説明する。
図１及び図２は、前記特開平５−１６８８９５号公報に
開示されたもので、図１は、高速気流中衝撃装置の一例
をその前後装置と共に系統的に示した概念的な説明図
を、図２は、図１の装置の側面断面図を示す。Hereinafter, the present invention will be described with reference to the drawings.
FIGS. 1 and 2 are disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 5-168895. FIG. 1 is a conceptual explanatory view systematically showing an example of a high-speed airflow impact device together with its front and rear devices. FIG. 2 shows a side sectional view of the device of FIG.
【００１５】この装置は、衝撃室８内に、衝撃ピン５を
周設した回転盤４及び衝突リング７を配置した粉体衝撃
装置の前カバー２の開口部から、固体粒子と小さな他の
固体粒子とから構成される固体粒子群を投入し、衝撃室
８を通過させることにより、衝撃式打撃作用を与える場
合において、衝撃ピン５の回転によって発生した気流と
共に、衝突リング７の一部に開口する排出口９より粉体
群の全量を排出して、粉体粒子群を過熱された気流から
分離した後、再び粉体粒子群のみを衝撃室８内に投入す
るようにして外粉体粒子群に前記衝撃式打撃作用を繰り
返し与えることにより、前記固体粒子の表面に前記固体
粒子よりも小さな他の固体粒子を付着させながら、また
は付着させた後、該他の固体粒子を埋設または固着させ
る装置である。In this device, solid particles and other small solid particles are introduced into an impact chamber 8 through an opening of a front cover 2 of a powder impact device in which a rotating disk 4 around which impact pins 5 are provided and an impact ring 7 are arranged. In the case where a group of solid particles composed of particles and the like are introduced and passed through the shock chamber 8, an impact-type striking action is given. After discharging the entire amount of the powder group from the discharge port 9 to separate the powder particles from the superheated airflow, only the powder particles are again introduced into the impact chamber 8 so that the outer powder particles are introduced. By repeatedly applying the impact-type impact action to the group, while attaching or after attaching other solid particles smaller than the solid particles to the surface of the solid particles, the other solid particles are embedded or fixed. Device.
【００１６】高速気流中衝撃法は、ある臨界以上の応力
が固体に加わるとき、その作用点近くに局所的な原子・
分子の配列の乱れが生じ、物性が変化するメカノケミカ
ル現象を利用した粒子設計法の一つである。物性の変化
は、従来は衝撃により部分的に温度の上昇するホットス
ポットによる熱的な現象によって生じると考えられてい
たが、現在は衝撃などの応力による短寿命の高エネルギ
ーフォノンの励起によると考えられている。そのエネル
ギーの一部が非弾性変形によって構造不整として残留し
固体内に蓄積され、それによる物性の変化がメカノケミ
カル現象として観察される。このようなメカノケミカル
現象から、興味ある粒子付着を生じさせていると考えら
れている。In the high-velocity air-flow impact method, when a stress exceeding a certain criticality is applied to a solid, a local atom
This is one of the particle design methods using mechanochemical phenomena in which physical properties change due to the disorder of molecular arrangement. Conventionally, changes in physical properties were thought to be caused by thermal phenomena caused by hot spots that partially rise in temperature due to impact, but are now thought to be due to excitation of short-lived high-energy phonons due to stress such as impact. Have been. A part of the energy remains as a structural irregularity due to inelastic deformation and accumulates in the solid, and a change in physical properties due to this is observed as a mechanochemical phenomenon. From such a mechanochemical phenomenon, it is thought that interesting particle adhesion is caused.
【００１７】本発明者らは、この装置を使用して繊維状
物と磁性粒子を用いて磁性繊維状物を製造することを試
みた。繊維状物は粉体と異なり形状が大きく、また繊維
の形状であるので複雑に絡み合い、この装置内で繰り返
し磁性粒子の衝撃を受けることが困難であることが予想
されたが、検討の結果、特定の条件下で容易に繊維状物
も処理でき、本発明の目的を達成できることを見い出し
た。また、この方法は数ｇの少量から数百ｋｇの多量に
至る処理量の装置を自由に設計設置でき、受注ロットの
大小に制限されることがなく対応できるという特徴があ
る。The present inventors have attempted to produce a magnetic fibrous material using a fibrous material and magnetic particles using this apparatus. The fibrous material, unlike the powder, has a large shape and is in the form of a fiber, so it is intricately entangled, and it was expected that it would be difficult to repeatedly receive the impact of magnetic particles in this device. It has been found that under specific conditions, fibrous materials can be easily treated and the object of the present invention can be achieved. Further, this method is characterized in that a device having a processing amount ranging from a small amount of several g to a large amount of several hundred kg can be freely designed and installed, and can be dealt with without being limited by the size of the ordered lot.
【００１８】本発明で使用する繊維状物は、重量平均繊
維長が５ｍｍ以下であれば、天然、合成、半合成を問わ
ず、あらゆる繊維状物を使用できる。例えば天然の繊維
状物としては、針葉樹、広葉樹などから製造した木材パ
ルプ繊維や、コウゾ、三椏、麻、コットン、ケナフなど
の非木材繊維などのセルロース繊維を使用できる。ま
た、たんぱく繊維である羊毛、絹、コラーゲンなども使
用できる。化学繊維としては再生繊維、半合成繊維、合
成繊維などが使用できる。具体的には、再生繊維として
はレーヨン、キュプラ、テンセル、キチン、キトサン、
デンプン、アルギン酸などである。半合成繊維として
は、アセテート、トリアセテートなど、合成繊維として
は、ナイロン、ポリエステル、アクリル、ポリシアン化
ビニリデン、ビニロン、ポリウレタン、ポリ塩化ビニ
ル、ビニリデン、ポリエチレン、ポリプロピレンなどで
ある。また、ポリオレフィン樹脂を使ってフラッシュ法
で製造した合成パルプも使用できる。本発明では、これ
らの繊維状物の１種類、又は２種類以上を使用する。As the fibrous material used in the present invention, any fibrous material, natural, synthetic or semi-synthetic, can be used as long as the weight average fiber length is 5 mm or less. For example, as a natural fibrous material, wood pulp fibers produced from conifers, hardwoods and the like, and cellulose fibers such as non-wood fibers such as mulberry, mitsumata, hemp, cotton, and kenaf can be used. In addition, protein fibers such as wool, silk, and collagen can also be used. Recycled fibers, semi-synthetic fibers, synthetic fibers and the like can be used as the chemical fibers. Specifically, the recycled fibers include rayon, cupra, tencel, chitin, chitosan,
Starch, alginic acid and the like. Semi-synthetic fibers include acetate and triacetate. Synthetic fibers include nylon, polyester, acryl, polyvinylidene cyanide, vinylon, polyurethane, polyvinyl chloride, vinylidene, polyethylene, and polypropylene. Also, synthetic pulp produced by a flash method using a polyolefin resin can be used. In the present invention, one or more of these fibrous materials are used.
【００１９】本発明使用できる繊維状物は、単繊維の状
態だけでなく、撚糸状のもの、複数本の繊維が絡まった
フロック状のものも含まれ、またフィルムを細く短冊状
に切って繊維状としたものも含まれる。The fibrous material that can be used in the present invention includes not only a single fiber, but also a twisted fiber, a floc-like fiber in which a plurality of fibers are entangled, and a film obtained by cutting a film into thin strips. Also included is the shape.
【００２０】後に詳しく述べるが、本発明の磁性繊維状
物をスラリーに添加して常法に従って偽造防止用紙を製
造する場合、磁性繊維状物は、用紙を構成する主成分で
ある木材繊維と強固に結合するほうが好ましい。As will be described in detail later, when the magnetic fibrous material of the present invention is added to a slurry to produce anti-counterfeit paper according to a conventional method, the magnetic fibrous material is strongly bonded to wood fibers, which are the main components of the paper. It is more preferable to bond to
【００２１】セルロース繊維や再生セルロース繊維は繊
維同士が水素結合で結合されるので本発明では好適に使
用できる。また熱水溶解温度が５０〜１００℃のビニロ
ン繊維も抄紙機の乾燥ゾーンでその一部が溶解又は膨潤
し、乾燥後にセルロース繊維と強固に接着するので本発
明で好適に使用できる。Cellulose fibers and regenerated cellulose fibers can be suitably used in the present invention since the fibers are bonded by hydrogen bonds. Vinylon fibers having a hot water dissolution temperature of 50 to 100 ° C. can be suitably used in the present invention because a part thereof dissolves or swells in a drying zone of a paper machine and firmly adheres to cellulose fibers after drying.
【００２２】本発明で単繊維状の磁性繊維状物を得たい
場合は、その重量平均繊維長が０．１〜５ｍｍ、軸比が
５〜３００であることが好ましい。重量平均繊維長が５
ｍｍより長くなると装置で処理する時に、繊維が完全に
絡み合ってしまい、目的を達成できないからである。ま
た、重量平均繊維長が０．１ｍｍ未満では単繊維状の磁
性繊維状物が得られず、拡大して見た場合繊維状という
より粉体の形状に近くなってしまうからである。ここで
規定している重量平均繊維長とは、繊維の長さをｌ、重
量をｗとしＮ本の繊維の全長をＬ（＝Σｌ）とすれば、
Σ（ｌｗ）／Σｗで得られる値である。When it is desired to obtain a monofilamentary magnetic fibrous material in the present invention, it is preferable that the weight average fiber length is 0.1 to 5 mm and the axial ratio is 5 to 300. Weight average fiber length is 5
If the length is longer than mm, the fibers are completely entangled during processing by the apparatus, and the object cannot be achieved. Further, if the weight average fiber length is less than 0.1 mm, a monofilamentary magnetic fibrous material cannot be obtained, and when viewed in an enlarged manner, it becomes closer to a powdery shape than a fibrous shape. The weight average fiber length defined here means that the length of the fiber is l, the weight is w, and the total length of the N fibers is L (= Σl).
It is a value obtained by Σ (lw) / Σw.
【００２３】また、軸比は、５〜３００であることが好
ましい。軸比が５未満であると、やはり、単繊維状の磁
性繊維状物が得られず、拡大して見た場合繊維状という
より粉体の形状に近くなってしまうからである。また、
軸比が３００を越えると繊維が絡み合い易くなる。ここ
で規定している軸比とは繊維の長軸の長さを短軸の長さ
で割った値である。一般的な繊維は短軸の長さが繊維の
直径になり、長軸の長さが繊維長になる。これら値は、
繊維を光学顕微鏡や電子顕微鏡で観察して写真に撮った
後、倍率を確認して実際に測定した長さである。The axial ratio is preferably from 5 to 300. If the axis ratio is less than 5, a single-filamentary magnetic fibrous material cannot be obtained, and when viewed in an enlarged manner, the shape becomes closer to a powdery shape than a fibrous shape. Also,
If the axial ratio exceeds 300, the fibers tend to be entangled. The axial ratio defined here is a value obtained by dividing the length of the major axis of the fiber by the length of the minor axis. In a general fiber, the length of the short axis is the diameter of the fiber, and the length of the long axis is the fiber length. These values are
This is the length actually measured by observing the magnification of the fiber after observing the fiber with an optical microscope or an electron microscope and taking a photograph.
【００２４】次に磁性粒子について説明する。本発明で
使用する磁性粒子は、パーマロイ、センダスト、Ｃｏ系
アモルファス、ソフトフェライトなどのように磁気的に
軟質な高透磁率磁性粒子や、γ−Ｆｅ2Ｏ3、Ｆｅ3Ｏ4、
ＣｒＯ2、Ｃｏ−被着γＦｅ2Ｏ3、メタルパウダー（針
状鉄粉）、バリウムフェライト（ＢａＯ・６Ｆｅ
2Ｏ3）、Ｓｍ−Ｃｏ合金、Ｎｄ合金、マグネタイト、の
ような磁気的に硬質な高保磁率磁性粒子である。本発明
ではこれらの針状、球状、板状等の粒子形態の磁性粒子
を使用する。Next, the magnetic particles will be described. The magnetic particles used in the present invention include magnetically soft high permeability magnetic particles such as permalloy, sendust, Co-based amorphous, and soft ferrite, and γ-Fe 2 O 3 , Fe 3 O 4 ,
CrO 2 , Co-coated γFe 2 O 3 , metal powder (acicular iron powder), barium ferrite (BaO · 6Fe)
Magnetically hard, high coercivity magnetic particles such as 2 O 3 ), Sm-Co alloy, Nd alloy, and magnetite. In the present invention, magnetic particles in the form of particles such as needles, spheres, and plates are used.
【００２５】本発明で使用する磁性粒子は、平均粒径が
０．１〜１００μｍであることが必要である。平均粒径
が、０．１μｍ未満では粒子が小さすぎ、軽くなりすぎ
るため装置中で舞ってしまい、その結果機械的衝撃を受
けにくくなり繊維状物表面への粒子の効率的固着化がで
きなくなってしまい、また、平均粒径が１００μｍを越
えると繊維状物表面に付着する粒子の数が少なくなり繊
維表面積に対する粒子の被覆率が低くなり効率的でなく
なるからである。本発明では、粒子の平均粒径は沈降式
粒度分布測定装置（商品名「ミクロン・フォート・サイ
ザーＭＰＳ−Ｚ」、（株）セイシン企業製造）で測定し
た値である。The magnetic particles used in the present invention must have an average particle size of 0.1 to 100 μm. If the average particle size is less than 0.1 μm, the particles are too small and too light to fly in the apparatus, and as a result, are less susceptible to mechanical impact, making it impossible to efficiently fix the particles to the surface of the fibrous material. On the other hand, if the average particle diameter exceeds 100 μm, the number of particles adhering to the surface of the fibrous material will decrease, and the coverage of the particles with respect to the fiber surface area will decrease, resulting in inefficiency. In the present invention, the average particle size of the particles is a value measured by a sedimentation type particle size distribution measuring device (trade name “Micron Fort Sizer MPS-Z”, manufactured by Seishin Enterprise Co., Ltd.).
【００２６】また、本発明では、本発明の目的を阻害し
ない範囲で、磁性粒子と繊維状物の他に添加剤、例えば
白色顔料、着色顔料、プラスチック粉体、等を添加でき
る。特に、磁性粒子と繊維状物の固着強度が弱い場合
は、強度を向上する目的でプラスチック粉体を併用する
ことが効果がある。In the present invention, in addition to the magnetic particles and fibrous substances, additives such as white pigments, color pigments, and plastic powders can be added in a range that does not impair the object of the present invention. In particular, when the bonding strength between the magnetic particles and the fibrous material is low, it is effective to use a plastic powder in combination for the purpose of improving the strength.
【００２７】以下、本発明の磁性繊維状物の製造例を述
べる。製造例１ 重量平均繊維長が２．８ｍｍであり、軸比が５０〜２０
０程度の針葉樹晒クラフトパルプ１００ｇと、磁性粒子
として球状の、平均粒径４μｍの四三酸化鉄（商品名
「ＢＬ−ＳＰ」、チタン工業（株）製造）１００ｇを高
速気流中衝撃処理装置（商品名「ハイブリタイザー」、
（株）奈良機械製作所製造）に投入し、５分間処理する
ことによってパルプ繊維の表面へ磁性粒子を固着させた
磁性繊維を得た。Hereinafter, a production example of the magnetic fibrous material of the present invention will be described. Production Example 1 The weight average fiber length was 2.8 mm, and the axial ratio was 50 to 20.
100 g of bleached kraft pulp of about 0 conifers and 100 g of iron tetroxide (trade name "BL-SP", manufactured by Titanium Industry Co., Ltd.) having a spherical average particle diameter of 4 [mu] m as a magnetic particle were subjected to a high-speed airflow impact treatment device ( Product name "Hybritizer",
(Manufactured by Nara Machinery Co., Ltd.) and treated for 5 minutes to obtain magnetic fibers having magnetic particles fixed to the surface of pulp fibers.
【００２８】製造例２ 重量平均繊維長が４ｍｍであり、軸比が２００の熱水溶
解温度が８０℃のビニロン繊維１００ｇと、磁性粒子と
して、針状の長径０．３２μｍ、軸比８のコバルト添加
γ酸化鉄（商品名「ＡＵＶＩＣＯ ＡＸ−１０００」、
チタン工業（株）製造）１００ｇを前記高速気流中衝撃
処理装置に投入し、５分間処理することによってビニロ
ン繊維の表面へ磁性粒子を固着させた磁性繊維を得た。 Production Example 2 100 g of vinylon fiber having a weight average fiber length of 4 mm, an axial ratio of 200 and a hot water dissolving temperature of 80 ° C., and a magnetic particle having a needle-like length of 0.32 μm and a cobalt ratio of 8 as an axial ratio Added gamma iron oxide (trade name "AUVICO AX-1000",
100 g) (manufactured by Titanium Industry Co., Ltd.) was placed in the high-speed airflow impact treatment apparatus and treated for 5 minutes to obtain magnetic fibers having magnetic particles fixed to the surface of vinylon fibers.
【００２９】製造例３ 重量平均繊維長が４ｍｍであり、軸比が２００程度のレ
ーヨン繊維１００ｇと、磁性粒子として針状の粒径１．
０μｍのマグネタイト（商品名「ＡＵＶＩＣＯＲＢ−Ｂ
Ｌ」、チタン工業（株）製造）１００ｇを前記高速気流
中衝撃処理装置に投入し、５分間処理することによって
レーヨン繊維の表面へ磁性粒子を固着させた磁性繊維を
得た。 Production Example 3 100 g of rayon fiber having a weight average fiber length of 4 mm and an axial ratio of about 200, and a needle-like particle size of 1.000 as magnetic particles.
0 μm magnetite (trade name “AUVICORB-B
L "(manufactured by Titanium Industry Co., Ltd.) was charged into the high-speed airflow impact treatment apparatus and treated for 5 minutes to obtain magnetic fibers having magnetic particles fixed to the surface of rayon fibers.
【００３０】このようにして製造した磁性繊維を電子顕
微鏡で１０００倍程度に拡大して観察してみると、繊維
の表面に磁性粒子が万遍なく固着している様子が観察さ
れた。磁性粒子は繊維の内部にまで進入して固着してお
り、本発明者等が検討した結果では、偽造防止用紙の抄
造に際してスラリーに添加しても、磁性粒子が繊維から
脱落することはほとんどないという特徴を有しているこ
とが判った。また単位面積当たりの固着量が多いことも
特徴で、用紙に含ませた場合に強く磁化させることがで
きる特徴も有していることが判った。When the magnetic fiber produced in this manner was observed at an magnification of about 1000 times with an electron microscope, it was observed that the magnetic particles were uniformly fixed on the surface of the fiber. The magnetic particles have penetrated into the interior of the fiber and are fixed, and as a result of investigations by the present inventors, even when added to the slurry during papermaking of forgery prevention paper, the magnetic particles hardly fall off from the fiber. It turned out that it had the characteristic of. It is also characterized by a large amount of fixation per unit area, and also has a feature of being strongly magnetized when included in paper.
【００３１】次に偽造防止用紙の製造について、例を挙
げて説明する。針葉樹晒クラフトパルプ（ＮＢＫＰ）、
広葉樹晒クラフトパルプ（ＬＢＫＰ）、針葉樹晒サルフ
ァイトパルプ（ＮＢＳＰ）、サーモメカニカルパルプ
（ＴＭＰ）等の製紙用パルプを主体としこれに乾燥紙力
増強剤、湿潤紙力増強剤、サイズ剤、定着剤、歩留り向
上剤、濾水性向上剤、消泡剤、着色染料、着色顔料、蛍
光染料などを適宜併用したスラリーを調製し、これに前
述したような方法で製造した磁性繊維状物を添加し、通
常フリーネス５５０〜２５０ｍｌＣ．Ｓ．Ｆ．で長網抄
紙機や円網抄紙機等の公知の抄紙機を使用して抄紙す
る。あるいは長網抄紙機へのスラリーの流送途中で磁性
繊維状物を添加し抄紙する。あるいは円網抄紙機のバッ
ト中に磁性繊維状物を流送し抄紙する。多槽型円網抄紙
機の場合は抄合わせにより用紙を製造できるので、任意
の紙層に磁性繊維状物を添加出来る。あるいは、従来種
々提案されているように、磁性繊維状物をストライプ状
に添加したり、ノズルを使用して間欠的にワイヤ上の紙
匹に噴射してもよい。この際、抄紙途上で紙面に澱粉、
ポリビニルアルコール、各種表面サイズ等をサイズプレ
ス装置等で塗工することも可能である。さらに必要に応
じ、マシンカレンダー処理やスーパーカレンダー処理を
施し、表面平滑性を向上させることも適宜行われる。Next, the manufacture of anti-counterfeit paper will be described with reference to examples. Softwood bleached kraft pulp (NBKP),
Mainly papermaking pulp such as hardwood bleached kraft pulp (LBKP), softwood bleached sulphite pulp (NBSP), and thermomechanical pulp (TMP). , A retention improver, a drainage improver, an antifoaming agent, a coloring dye, a coloring pigment, a slurry prepared by appropriately using a fluorescent dye, etc., and a magnetic fibrous material produced by the method described above is added thereto, Normal freeness 550-250 ml C.I. S. F. Using a well-known paper machine such as a fourdrinier paper machine or a round paper machine. Alternatively, a magnetic fibrous substance is added during the flow of the slurry to the fourdrinier paper machine to make paper. Alternatively, the magnetic fibrous material is fed into a vat of a round paper machine to make paper. In the case of a multi-tank type circular web paper machine, paper can be produced by papermaking, so that a magnetic fibrous material can be added to any paper layer. Alternatively, a magnetic fibrous material may be added in the form of a stripe, or may be intermittently sprayed onto a paper web on a wire using a nozzle, as conventionally proposed. At this time, starch on the paper surface during papermaking,
It is also possible to apply polyvinyl alcohol, various surface sizes, and the like using a size press device or the like. Further, if necessary, a machine calendering treatment or a super calendering treatment is performed to appropriately improve the surface smoothness.
【００３２】本発明で得られた偽造防止用紙は所定の印
刷を施して偽造防止印刷物を製造する。この印刷物の真
贋を判定するのには、例えば特開平７−２１４９５５号
に記載されているような方法で行えばよい。The anti-counterfeit paper obtained according to the present invention is subjected to predetermined printing to produce anti-counterfeit printed matter. The authenticity of the printed matter may be determined by a method described in, for example, JP-A-7-214955.
【００３３】[0033]
１．本発明で得られる磁性繊維状物は、磁性粒子の歩留
まりも高く製造でき、磁化した場合の強度が強い。 ２．この繊維状物を使用して偽造防止用紙を製造する
と、用紙製造中に繊維状物から磁性粒子が離脱すること
が無く抄紙できる。 ３．磁性粒子は黒色や褐色であるので、本発明で得られ
る磁性繊維状物は用紙に含ませた時に着色して見え、そ
の形態が目視により確認でき、用紙が偽造されたもので
あるか否かを容易に判定出来る。 ４．本発明で得られる磁性繊維状物は偽造防止用紙に限
らず、プラスチック板の製造時に添加することで、偽造
防止能を有する各種のカード類にも利用できる。 ５．本発明の偽造防止用紙に所定の印刷を施し、偽造防
止印刷物を得ることができ、例えば、商品券、株券、紙
幣、身分証明書、各種チケット類、パスポート等、偽造
防止を要求される分野に利用できる。1. The magnetic fibrous material obtained by the present invention can be manufactured with a high yield of magnetic particles and has a high strength when magnetized. 2. When anti-counterfeit paper is manufactured using this fibrous material, papermaking can be performed without the magnetic particles coming off from the fibrous material during paper manufacture. 3. Since the magnetic particles are black or brown, the magnetic fibrous material obtained in the present invention appears colored when included in the paper, its form can be visually confirmed, and whether or not the paper is forged. Can be easily determined. 4. The magnetic fibrous material obtained by the present invention can be used not only for anti-counterfeit paper but also for various cards having anti-counterfeit ability by adding it at the time of manufacturing a plastic plate. 5. The anti-counterfeit paper of the present invention can be subjected to predetermined printing to obtain anti-counterfeit printed matter.For example, gift certificates, stock certificates, bills, identification cards, various tickets, passports, etc. Available.
【図１】 高速気流中衝撃装置の一例をその前後装置と
共に系統的に示した概念的な説明図である。FIG. 1 is a conceptual explanatory diagram systematically showing an example of a high-speed airflow impact device together with its front and rear devices.
【図２】 図１の装置の側面断面図を示す。粉体処理装
置の一例をその前後装置と共に系統的に示した概念的な
説明図である。FIG. 2 shows a side sectional view of the device of FIG. FIG. 2 is a conceptual explanatory diagram systematically showing an example of a powder processing apparatus together with its front and rear devices.
１ ケーシング ２ 前カバー ３ 後カバー ４ 回転盤 ５ 衝撃ピン ６ 回転軸 ７ 衝突リング ８ 衝撃室 ９ 排出口 １０ 投入口 １１ 排出管 １２ 固気分離装置 １３ 投入管 １４ 原料供給用のシュート １５ 原料ホッパー １６ 開閉弁 １７ 切替弁 １８ 切替制御装置 １９ 循環回路 ２０ 捕集器 ２１ 排風管 ２２ 吸引ブロワー ２３ 送風管 ２４ エアフィルター ２５ 調節弁 ２６ 原料計量フィーダー ２７ プレプロセッサー ２８ ジャケット ２９ ジャケット ３０ ジャケット REFERENCE SIGNS LIST 1 casing 2 front cover 3 rear cover 4 turntable 5 impact pin 6 rotation shaft 7 collision ring 8 impact chamber 9 discharge port 10 input port 11 discharge pipe 12 solid-gas separation device 13 input pipe 14 raw material supply chute 15 raw material hopper 16 On-off valve 17 Switching valve 18 Switching controller 19 Circulation circuit 20 Collector 21 Exhaust tube 22 Suction blower 23 Blower tube 24 Air filter 25 Control valve 26 Raw material measuring feeder 27 Preprocessor 28 Jacket 29 Jacket 30 Jacket
Claims (6)
子を、高速気流中衝撃法により重量平均繊維長が５ｍｍ
以下の繊維状物表面に固着したことを特徴とする磁性繊
維状物。1. A magnetic particle having an average particle diameter of 0.1 to 100 μm is crushed by a high-speed air-flow impact method to a weight average fiber length of 5 mm.
A magnetic fibrous material characterized by being fixed to the following fibrous material surface.
は再生セルロース繊維状物であることを特徴とする請求
項１記載の磁性繊維状物。2. The magnetic fibrous material according to claim 1, wherein the fibrous material is a cellulose fibrous material or a regenerated cellulose fibrous material.
℃のビニロン繊維状物であることを特徴とする請求項１
記載の磁性繊維状物。3. The fibrous material has a hot water dissolving temperature of 50 to 100.
2. A vinylon fibrous material at a temperature of .degree.
The magnetic fibrous material according to the above.
繊維長が０．１〜５ｍｍ、軸比が５〜３００であること
を特徴とする請求項１〜３のいずれか１項記載の磁性繊
維状物。4. The fiber according to claim 1, wherein the fibrous material is a single fiber, the weight average fiber length is 0.1 to 5 mm, and the axial ratio is 5 to 300. Magnetic fibrous material.
中に含むことを特徴とする偽造防止用紙。5. A forgery prevention paper comprising the magnetic fibrous material according to claim 1 in the paper.
刷を施したことを特徴とする偽造防止印刷物。6. An anti-counterfeit printed matter obtained by printing on the surface of the anti-counterfeit paper according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28603597A JP3295626B2 (en) | 1997-10-01 | 1997-10-01 | Magnetic fibrous material, anti-counterfeit paper using the same, and anti-counterfeit printed matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28603597A JP3295626B2 (en) | 1997-10-01 | 1997-10-01 | Magnetic fibrous material, anti-counterfeit paper using the same, and anti-counterfeit printed matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11107161A true JPH11107161A (en) | 1999-04-20 |
| JP3295626B2 JP3295626B2 (en) | 2002-06-24 |
Family
ID=17699140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28603597A Expired - Fee Related JP3295626B2 (en) | 1997-10-01 | 1997-10-01 | Magnetic fibrous material, anti-counterfeit paper using the same, and anti-counterfeit printed matter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3295626B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323773A (en) * | 1997-12-02 | 1999-11-26 | Ain Kosan Kk | Photocatalyst pulp composition, photocatalyst pulp foam using the composition, photocatalyst pulp molding using the composition and photocatalyst pulp foam molding using the foam and production of the photocatalyst pulp composition, foam, molding and foam molding |
| JP2002173890A (en) * | 2000-12-05 | 2002-06-21 | Toppan Printing Co Ltd | Magnetic fiber form and method for producing the same |
| JP2005146477A (en) * | 2003-11-18 | 2005-06-09 | Fuji Xerox Co Ltd | Security paper, method and apparatus for producing the same |
| JP2006169659A (en) * | 2004-12-15 | 2006-06-29 | Nissan Motor Co Ltd | Fiber and textile product containing information nucleic acid |
| JP2008196096A (en) * | 2007-01-16 | 2008-08-28 | Oji Paper Co Ltd | Anti-counterfeit paper |
| US8076010B2 (en) | 2006-07-12 | 2011-12-13 | Fuji Xerox Co., Ltd. | Magnetic wire and recording medium |
-
1997
- 1997-10-01 JP JP28603597A patent/JP3295626B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323773A (en) * | 1997-12-02 | 1999-11-26 | Ain Kosan Kk | Photocatalyst pulp composition, photocatalyst pulp foam using the composition, photocatalyst pulp molding using the composition and photocatalyst pulp foam molding using the foam and production of the photocatalyst pulp composition, foam, molding and foam molding |
| JP2002173890A (en) * | 2000-12-05 | 2002-06-21 | Toppan Printing Co Ltd | Magnetic fiber form and method for producing the same |
| JP2005146477A (en) * | 2003-11-18 | 2005-06-09 | Fuji Xerox Co Ltd | Security paper, method and apparatus for producing the same |
| JP2006169659A (en) * | 2004-12-15 | 2006-06-29 | Nissan Motor Co Ltd | Fiber and textile product containing information nucleic acid |
| US8076010B2 (en) | 2006-07-12 | 2011-12-13 | Fuji Xerox Co., Ltd. | Magnetic wire and recording medium |
| JP2008196096A (en) * | 2007-01-16 | 2008-08-28 | Oji Paper Co Ltd | Anti-counterfeit paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3295626B2 (en) | 2002-06-24 |
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