JPH048536Y2 - - Google Patents
Info
- Publication number
- JPH048536Y2 JPH048536Y2 JP11995984U JP11995984U JPH048536Y2 JP H048536 Y2 JPH048536 Y2 JP H048536Y2 JP 11995984 U JP11995984 U JP 11995984U JP 11995984 U JP11995984 U JP 11995984U JP H048536 Y2 JPH048536 Y2 JP H048536Y2
- Authority
- JP
- Japan
- Prior art keywords
- liner material
- magnetic disk
- jacket
- fibers
- bonded
- 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
Links
- 239000000463 material Substances 0.000 claims description 43
- 239000011230 binding agent Substances 0.000 claims description 16
- 238000004132 cross linking Methods 0.000 claims description 12
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 description 33
- 239000004745 nonwoven fabric Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 7
- 229920000297 Rayon Polymers 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000002964 rayon Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000007767 bonding agent Substances 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000010022 rotary screen printing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Description
【考案の詳細な説明】
(産業上の利用分野)
一般に磁気デイスク用ジヤケツトは磁気デイス
クを外部からの駆動により回転させながら磁気ヘ
ツドを通じて記録再生が可能な様に収納してお
り、磁気デイスクを外部からの損傷や塵埃などに
よる汚染から保護する働きをしている。本考案は
この磁気デイスク用ジヤケツトに関するものであ
り、とくにその内側に不織布ライナー材を備えた
磁気デイスク用シヤケツトに関する。[Detailed description of the invention] (Field of industrial application) In general, a jacket for a magnetic disk houses the magnetic disk in such a way that it can be read and recorded through a magnetic head while being rotated by an external drive. It serves to protect against damage from dirt and contamination from dust. The present invention relates to a jacket for a magnetic disk, and more particularly to a jacket for a magnetic disk provided with a nonwoven liner material on the inside thereof.
(従来技術及びその問題点)
従来、磁気デイスク用ジヤケツトには塩化ビニ
ル、ABS樹脂などの合成樹脂性ジヤケツト素材
の内面に、レーヨン繊維やポリエステル繊維など
の繊維ウエブをNBR,SBRやポリエステル樹脂
などの結合剤で結合した不織布ライナー材を貼着
したものが使用されている。しかしながら、これ
らの不織布ライナー材は繊維間が全体にわたつて
結合されているので柔軟性やクツシヨン性に乏し
く、クリーニング性も劣るという欠点を有してい
た。(Prior art and its problems) Conventionally, jackets for magnetic disks have been made by coating a fiber web such as rayon fiber or polyester fiber on the inner surface of a synthetic resin jacket material such as vinyl chloride or ABS resin. A nonwoven liner bonded with a binder is used. However, these nonwoven fabric liner materials have the drawbacks of poor flexibility and cushioning properties and poor cleaning properties because the fibers are bonded throughout.
一方、これらの欠点を改良したものとしてレー
ヨン繊維とポリプロピレン繊維とからなる繊維ウ
エブを部分的に熱融着した不織布ライナー材があ
る。しかし、このライナー材は熱可塑性繊維であ
るポリプロピレン繊維を溶解することにより接着
しており、ポリプロピレン繊維が結合部分の近傍
でもろくなり易く、工程中、ロールなどからせん
断力を受けることによつて繊維切れが生じてポリ
プロピレン繊維が粉状になるという問題があつ
た。この様な現象は他の熱可塑性繊維を用いても
同様であつて、加熱エンボスカレンダーを用いる
場合には起こり易かつた。 On the other hand, as a material that has improved these drawbacks, there is a nonwoven fabric liner material in which a fiber web made of rayon fibers and polypropylene fibers is partially heat-sealed. However, this liner material is bonded by melting polypropylene fibers, which are thermoplastic fibers, and the polypropylene fibers tend to become brittle near the joint, and during the process, the fibers become brittle when subjected to shearing force from rolls, etc. There was a problem that the polypropylene fibers were broken and turned into powder. This phenomenon is similar even when other thermoplastic fibers are used, and is more likely to occur when a heated embossing calender is used.
また、この種のライナー材は結合部分がフイル
ム化して硬くなつているのでクツシヨン性や柔軟
性が十分とはいえず、結合部分が直接磁気デイス
クに触れるという、磁気デイスクが傷つくおそれ
もあつた。 In addition, this type of liner material has a hard bonding part formed into a film, so it cannot be said to have sufficient cushioning properties or flexibility, and there is a risk that the bonding part may come into direct contact with the magnetic disk, causing damage to the magnetic disk.
(考案の目的)
本考案は上記従来技術の欠点を解消すべくなさ
れたものであり、柔軟性、クツシヨン性、クリー
ニング性に優れ、繊維切れなどによる樹脂粉の発
生のない不織布ライナー材を備えた磁気デイスク
用ジヤケツトを得ることを目的とする。(Purpose of the invention) The present invention was made in order to eliminate the drawbacks of the above-mentioned conventional technology. The purpose is to obtain a jacket for magnetic disks.
(考案の構成及び作用)
本考案は合成樹脂性ジヤケツト素材の内面に不
織布ライナー材を貼着してなる磁気デイスク用ジ
ヤケツトにおいて、該不織布ライナー材が架橋性
結合剤により部分的に結合されており、該結合部
分が緻密状態になつていると共に、該結合部分の
面積が不織布ライナー材の面積の5〜35%を占め
ることを特徴とする磁気デイスク用ジヤケツトで
ある。(Structure and operation of the invention) The present invention provides a magnetic disk jacket comprising a non-woven liner material adhered to the inner surface of a synthetic resin jacket material, in which the non-woven liner material is partially bonded by a cross-linking binder. , the jacket for a magnetic disk is characterized in that the bonded portion is in a dense state and the area of the bonded portion occupies 5 to 35% of the area of the nonwoven liner material.
本考案の磁気デイスク用ジヤケツトは例えば第
1図に示すような展開図に基いて作られる。すな
わち本考案の磁気デイスクジヤケツトは塩化ビニ
ル、ABS樹脂などの合成樹脂性ジヤケツト素材
2の内面に不織布ライナー材3を加熱エンボスロ
ール、加熱平板などを用いて貼着し、点線で示す
磁気デイスク4の挿入位置に対応してセンターホ
ール5、ヘツドウインド6、インデツクスホール
7等の開口部を打抜き、不織布ライナー材3を貼
着した側を内側にして第1図に示すA−A′線で
折り曲げ、更に周辺接着部8を折込んで袋状に接
着して作られる。得られる磁気デイスク用ジヤケ
ツトは第2図に示す断面図の様になる。 The jacket for a magnetic disk according to the present invention is manufactured, for example, based on a developed view as shown in FIG. That is, in the magnetic disk jacket of the present invention, a nonwoven fabric liner material 3 is adhered to the inner surface of a jacket material 2 made of synthetic resin such as vinyl chloride or ABS resin using a heated embossing roll, a heated flat plate, etc., and a magnetic disk 4 shown by a dotted line is formed. Punch out openings for the center hole 5, head window 6, index hole 7, etc. corresponding to the insertion positions of It is made by folding it, then folding in the peripheral adhesive part 8 and gluing it into a bag shape. The resulting magnetic disk jacket has a sectional view shown in FIG.
本考案に使用する不織布ライナー材3は第3図
の断面図に示すように構成繊維9が架橋性結合剤
10で部分的に結合されており、緻密状態になつ
ている結合部分11と崇高な非結合部分12を形
成している。この不織布ライナー材3の構成繊維
9にはポリエステル系、ポリオレフイン系などの
合成繊維やレーヨン系繊維が使用される。また繊
維間を結合する架橋性結合剤10には自己架橋型
アクリル酸エステルや自己架橋型エチレン酢ビ共
重合体や、自己架橋型のSBR,NBR等の合成ゴ
ムを使用するのが好ましく、架橋剤を併用するタ
イプの結合剤も使用できる。なお、結合部分11
の面積が不織布ライナー材3の面積に占める割合
は5〜35%でなければならず、5%未満では繊維
の脱落や毛羽立ちが生じやすく、かつライナー材
の強度も不足し、35%を越えると風合が硬くなつ
てクツシヨン性を失つてしまう。とくに好ましい
結合部分11の面積は10〜30%である。 As shown in the cross-sectional view of FIG. 3, the nonwoven fabric liner material 3 used in the present invention has constituent fibers 9 partially bonded with a crosslinking binder 10, and has a dense bonded portion 11 and a sublime structure. A non-bonded portion 12 is formed. The constituent fibers 9 of the nonwoven liner material 3 are synthetic fibers such as polyester and polyolefin fibers, and rayon fibers. Furthermore, it is preferable to use a self-crosslinking type acrylic acid ester, a self-crosslinking type ethylene vinyl acetate copolymer, or a self-crosslinking type synthetic rubber such as SBR or NBR as the crosslinkable binder 10 that binds the fibers. A type of binder that is used in combination with an agent can also be used. In addition, the connecting part 11
The ratio of the area of the nonwoven fabric liner material 3 to the area of the nonwoven fabric liner material 3 must be 5 to 35%; if it is less than 5%, fibers will easily fall off and fuzz, and the strength of the liner material will be insufficient; if it exceeds 35%, The texture becomes hard and the cushioning properties are lost. A particularly preferable area of the bonding portion 11 is 10 to 30%.
次に本考案に使用する不織布ライナー材3の製
造方法の一例を示すと、まず繊維9を公知のカー
ド法、エアレイ法、湿式などのウエブ形成法によ
りウブ形成する。そして、エマルジヨンなどの架
橋性結合剤10をペースト状にしてロータリース
クリーンプリント機などによりウエブに直接塗布
するか、離型性ゴムシートまたは離型性ドラムな
どに一旦塗布してから、場合によつては水分等を
蒸発させた後ウエブに転写する。ここでロータリ
ースクリーンプリント機などのスクリーンは点
状、線状、円形状、四角形状、多角形状などの所
定形状を一定又は適宜の間隔で分布させたパター
ンを有するものを使用する。また各形状の間隔は
構成する繊維9の繊維長より短くすると毛羽立ち
が生じないので望ましい。次いでカレンダー機な
どにより熱と圧力を作用させることにより、架橋
性結合剤をウエブ中に押し込んで緻密状態にす
る。 Next, an example of a method for manufacturing the nonwoven liner material 3 used in the present invention will be described. First, the fibers 9 are formed into a web using a known web forming method such as a carding method, an airlay method, or a wet method. Then, the crosslinkable binder 10 such as emulsion is made into a paste and is applied directly to the web using a rotary screen printing machine or the like, or once applied to a releasable rubber sheet or a releasable drum, and then, as the case may be, is transferred to the web after moisture etc. have been evaporated. Here, a screen such as a rotary screen printing machine is used that has a pattern in which predetermined shapes such as dots, lines, circles, squares, and polygons are distributed at constant or appropriate intervals. Further, it is preferable that the interval between the shapes be shorter than the fiber length of the constituent fibers 9 to avoid fluffing. Next, by applying heat and pressure using a calender or the like, the crosslinkable binder is forced into the web and densified.
ただし、この時点で架橋させてしまうと繊維が
高い密度に押さえられた状態で固定され、硬い不
織布になつていしまうので架橋が完了しない条件
を選ぶことが望ましい。この後、無押圧下で熱処
理をして架橋性結合剤の架橋を完了させることに
より緻密状態になつている結合部分11と崇高な
非結合部分12とを有する不織布ライナー材3が
得られる。この不織布ライナー材3の目付は30〜
120g/m2がよく、厚みは200〜700μmが好まし
い。なお、結合剤に熱可塑性樹脂を用いると、加
熱状態で軟化性や流動性が生じるため、結合部分
を緻密状態にすることができず、結合部分が直接
磁気デイスクに接触して、磁気デイスクを損傷し
たり、トルクが高くなつたりするので、結合剤は
架橋性結合剤でなければならない。 However, if crosslinking is carried out at this point, the fibers will be fixed at a high density and become a hard nonwoven fabric, so it is desirable to select conditions that do not allow crosslinking to complete. Thereafter, heat treatment is performed without pressing to complete crosslinking of the crosslinkable binder, thereby obtaining a nonwoven fabric liner material 3 having a dense bonded portion 11 and a sublime non-bonded portion 12. The basis weight of this nonwoven liner material 3 is 30~
120 g/m 2 is good, and the thickness is preferably 200 to 700 μm. Note that when a thermoplastic resin is used as a binder, it becomes soft and fluid when heated, so the bonded part cannot be made dense, and the bonded part comes into direct contact with the magnetic disk, causing the magnetic disk to deteriorate. The bonding agent must be a crosslinking bonding agent to avoid damage and high torque.
本考案に使用する不織布ライナー材3は上述の
ごとく非結合部分12が崇高であるうえに結合部
分11が熱融着による不織布ライナー材のように
フイルム化しておらず、弾性のある架橋性結合剤
で結合されているので柔軟でクツシヨン性があ
る。また非結合部分12はその厚みが結合部分1
1の厚みに比べて大きいので磁気デイスク4が結
合部分11と直接接触することはなく損傷が生じ
にくい。更には磁気デイスク上のゴミを崇高な非
結合部分12に取りこむので、クリーニング性も
極めて高い。 The non-woven fabric liner material 3 used in the present invention has the non-bonded portion 12 as described above, and the bonded portion 11 is not formed into a film unlike the non-woven fabric liner material by heat-sealing, and is made of an elastic cross-linkable binder. It is flexible and has cushioning properties. In addition, the thickness of the unbonded portion 12 is the same as that of the bonded portion 1.
1, the magnetic disk 4 does not come into direct contact with the coupling portion 11 and is less likely to be damaged. Furthermore, since the dust on the magnetic disk is taken into the sublime non-bonded portion 12, cleaning performance is also extremely high.
一方、結合部分11は小さな結合面積でありな
がら綿密状態になつているため、結合強度が高
く、しかも柔軟性を保ちながら高い強度を維持す
ることができる。その結果、ライナー材は繊維抜
けや毛羽立ちも生じない。しかも、本考案の不織
布ライナー材3は熱融着による不織布の場合のよ
うに工程中に構成繊維の融点以上の温度がかかる
ことはなく、ロールなどのせん断力によつて繊維
切れが生じて樹脂粉が発生することもない。 On the other hand, since the bonding portion 11 has a small bonding area but is tightly formed, the bonding strength is high, and high strength can be maintained while maintaining flexibility. As a result, the liner material does not shed fibers or become fluffy. Moreover, the nonwoven fabric liner material 3 of the present invention is not subjected to temperatures higher than the melting point of the constituent fibers during the process, unlike in the case of nonwoven fabrics made by heat-sealing. No powder is generated.
(実施例)
実施例1.5d/51mmのレーヨン繊維50重量%と
1.5d/51mmのポリエステル繊維50重量%とからな
る目付80g/m2のウエブを形成する。(Example) Example 1.5d/51mm rayon fiber 50% by weight
A web with a basis weight of 80 g/m 2 is formed from 50% by weight of 1.5 d/51 mm polyester fibers.
一方、自己架橋型アクリル酸エステルエマルジ
ヨンの結合剤ペーストをシリコーン型離型性コン
ベアベルトにプリントし、80℃の乾燥機で水分を
除去する。この後、コンベアベルト上の結合剤ペ
ーストをウエブに転写する。次いで湿度190℃、
線圧30Kg/cmの圧力をかけて結合剤をウエブ中に
押し込むと共に緻密化する。そして、150℃で5
分間熱処理をすることにより、結合剤の架橋を完
了させる。このとき、結合部分の面積はウエブ面
積の約20%であり、結合剤の付着量は12g/m2で
あつた。得られた不織布をライナー材として塩化
ビニル樹脂製ジヤケツト素材に160〜180℃で熱融
着し、開口部等を打ち抜き、成形してジヤケツト
にした。 Meanwhile, a binder paste of self-crosslinking acrylic ester emulsion is printed on a silicone-type releasable conveyor belt, and moisture is removed in a dryer at 80°C. After this, the binder paste on the conveyor belt is transferred to the web. Then the humidity is 190℃,
A linear pressure of 30 kg/cm is applied to force the binder into the web and densify it. And 5 at 150℃
Crosslinking of the binder is completed by heat treatment for a minute. At this time, the area of the bonded portion was approximately 20% of the web area, and the amount of bonding agent deposited was 12 g/m 2 . The obtained nonwoven fabric was heat-sealed as a liner material to a jacket material made of vinyl chloride resin at 160 to 180°C, and openings etc. were punched out and formed into a jacket.
上述の不織布ライナー材は6g/m2の荷重にお
ける厚みが600μmで20g/m2の荷重における厚み
が470μmであるので、荷重変化に伴う厚みの変化
率は22%と大きく、クツシヨン性が良好であるこ
とを示した。また、このライナー材は柔軟である
にもかかわらず繊維抜けや毛羽立ちもなく、樹脂
粉の発生もなかつた。 The thickness of the nonwoven liner material mentioned above is 600 μm under a load of 6 g/m 2 and 470 μm under a load of 20 g/m 2 , so the rate of change in thickness due to load changes is as large as 22%, and the cushioning properties are good. It showed that there is. Furthermore, although this liner material was flexible, there was no shedding of fibers or fluffing, and no resin powder was generated.
比較例 1.5d/51mmのレーヨン繊維50重量%と
1.5d/51mmのポリエステル繊維50重量%とからな
る目付100g/m2ウエブを形成する。 Comparative example: 1.5d/51mm rayon fiber 50% by weight
A 100 g/m 2 web with a basis weight of 50% by weight of 1.5 d/51 mm polyester fibers was formed.
次いで、このウエブをシール面積が20%となる
ように加熱エンボスロールで熱圧着する。 Next, this web is thermocompressed using a heated embossing roll so that the sealed area is 20%.
得られた不織布をライナー材として塩化ビニル
樹脂製ジヤケツト素材に160〜180℃で熱融着し、
開口部等を打ち抜き、成形にしてジヤケツトにし
た。 The obtained nonwoven fabric is heat-sealed to a vinyl chloride resin jacket material at 160 to 180℃ as a liner material.
The opening etc. were punched out and molded into a jacket.
上述の不織布ライナー材は6g/cm2の荷重にお
ける厚みが740μmで20g/cm2の荷重における厚み
が675μmであり、厚みの変化率は9%と小さく、
クツシヨン性はよくなかつた。またこのライナー
材には樹脂粉の発生が見られた。 The above non-woven liner material has a thickness of 740 μm under a load of 6 g/cm 2 and a thickness of 675 μm under a load of 20 g/cm 2 , and the rate of change in thickness is as small as 9%.
The cushioning properties were not good. Also, generation of resin powder was observed in this liner material.
なお、上記実施例及び比較例における厚みの変
化率とは6g/cm2の荷重における厚みと20g/cm2
の荷重における厚みとの差を6g/cm2の荷重にお
ける厚みで割つたものを百分率で表したものであ
る。 In addition, the rate of change in thickness in the above examples and comparative examples is the thickness at a load of 6 g/cm 2 and the thickness at a load of 20 g/cm 2
It is expressed as a percentage by dividing the difference between the thickness under a load of 6 g/cm 2 and the thickness under a load of 6 g/cm 2 .
(考案の効果)
以上述べた様に本考案の磁気デイスク用ジヤケ
ツトに使用する不織布ライナー材は柔軟でクツシ
ヨン性があるので、磁気デイスクのヘツドタツチ
をソフトにすることができ、かつクリーニング性
も極めて良好である。またこの不織布ライナー材
は繊維抜けや毛羽立ちが生じにくいうえに、繊維
切れなどによる樹脂粉の発生がないので異物によ
り磁気ヘツドを損傷したりする心配もない。更に
は、この不織布ライナー材は結合部分の厚みより
非結合部分の厚みが大きいので、磁気デイスクが
結合部分に直接接触することがなく、磁気デイス
クを損傷したり、トルクが多くなつたりすること
はない。(Effects of the invention) As mentioned above, the non-woven fabric liner material used in the magnetic disk jacket of the present invention is flexible and has cushioning properties, so it can soften the head of the magnetic disk when touched, and has extremely good cleaning properties. It is. In addition, this nonwoven liner material is less prone to fiber shedding and fluffing, and since resin powder is not generated due to fiber breakage, there is no risk of damage to the magnetic head due to foreign matter. Furthermore, since the thickness of the non-bonded part of this non-woven liner material is greater than the thickness of the coupled part, the magnetic disk does not come into direct contact with the coupled part, which prevents damage to the magnetic disk or increased torque. do not have.
従つて本考案の磁気デイスク用ジヤケツトは長
期に亘る使用に際しても、磁気ヘツドや磁気デイ
スクの損傷やトルクの増大といつたトラブルが生
じることはほとんどなく、クリニーング性及び耐
久性にすぐれた極めて実用性の高いものである。 Therefore, even when the magnetic disk jacket of the present invention is used for a long period of time, troubles such as damage to the magnetic head or magnetic disk or increase in torque will hardly occur, and it is extremely practical with excellent cleaning properties and durability. It has a high value.
第1図は本考案の磁気デイスク用ジヤケツトの
一例を示す展開図であり、第2図は磁気デイスク
を収納した本考案の磁気デイスク用ジヤケツトの
断面図であり、第3図は本考案の磁気デイスク用
ジヤケツトに使用する不織布ライナー材の断面図
である。
1……磁気デイスク用ジヤケツト、2……合成
樹脂製ジヤケツト素材、3……不織布ライナー
材、4……磁気デイスク、9……繊維、10……
架橋性結合剤、11……結合部分、12……非結
合部分。
FIG. 1 is a developed view showing an example of the magnetic disk jacket of the present invention, FIG. 2 is a sectional view of the magnetic disk jacket of the present invention housing a magnetic disk, and FIG. FIG. 2 is a cross-sectional view of a nonwoven liner material used in a disk jacket. DESCRIPTION OF SYMBOLS 1... Jacket for magnetic disk, 2... Synthetic resin jacket material, 3... Nonwoven fabric liner material, 4... Magnetic disk, 9... Fiber, 10...
Crosslinkable binder, 11...Binding part, 12...Non-bonding part.
Claims (1)
ナー材を貼着してなる磁気デイスク用ジヤケツト
において、該不織布ライナー材が架橋性結合剤に
より部分的に結合されており、該結合部分が緻密
状態になつていると共に、該結合部分の面積が不
織布ライナー材の面積の5〜35%を占めることを
特徴とする磁気デイスク用ジヤケツト。 In a magnetic disk jacket in which a non-woven liner material is adhered to the inner surface of a synthetic resin jacket material, the non-woven liner material is partially bonded by a crosslinking binder, and the bonded portion becomes dense. A jacket for a magnetic disk, characterized in that the area of the bonded portion occupies 5 to 35% of the area of the nonwoven liner material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11995984U JPS6134673U (en) | 1984-08-01 | 1984-08-01 | Jacket for magnetic disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11995984U JPS6134673U (en) | 1984-08-01 | 1984-08-01 | Jacket for magnetic disk |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6134673U JPS6134673U (en) | 1986-03-03 |
JPH048536Y2 true JPH048536Y2 (en) | 1992-03-04 |
Family
ID=30678806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11995984U Granted JPS6134673U (en) | 1984-08-01 | 1984-08-01 | Jacket for magnetic disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6134673U (en) |
-
1984
- 1984-08-01 JP JP11995984U patent/JPS6134673U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6134673U (en) | 1986-03-03 |
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