JPH0510291Y2 - - Google Patents
Info
- Publication number
- JPH0510291Y2 JPH0510291Y2 JP1985101319U JP10131985U JPH0510291Y2 JP H0510291 Y2 JPH0510291 Y2 JP H0510291Y2 JP 1985101319 U JP1985101319 U JP 1985101319U JP 10131985 U JP10131985 U JP 10131985U JP H0510291 Y2 JPH0510291 Y2 JP H0510291Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- jacket
- weight
- liner material
- magnetic disk
- 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 - Lifetime
Links
- 239000000835 fiber Substances 0.000 claims description 63
- 239000000463 material Substances 0.000 claims description 54
- 239000004745 nonwoven fabric Substances 0.000 claims description 34
- 229920001169 thermoplastic Polymers 0.000 claims description 30
- 239000004416 thermosoftening plastic Substances 0.000 claims description 30
- 238000003475 lamination Methods 0.000 description 11
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 239000004743 Polypropylene Substances 0.000 description 10
- 239000000428 dust Substances 0.000 description 9
- 229920003002 synthetic resin Polymers 0.000 description 9
- 239000000057 synthetic resin Substances 0.000 description 9
- 229920000297 Rayon Polymers 0.000 description 8
- -1 polypropylene Polymers 0.000 description 8
- 239000002964 rayon Substances 0.000 description 8
- 238000004049 embossing Methods 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229920002239 polyacrylonitrile Polymers 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 229920002972 Acrylic fiber Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 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
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は内面に不織布ライナー材を備えた磁気
デイスクジヤケツトに関する。[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a magnetic disk jacket having a non-woven liner material on the inner surface.
（従来技術及びその問題点）
従来、磁気デイスクジヤケツトには、レーヨン
繊維70〜80重量％とポリプロピレン繊維30〜20重
量％とからなる部分熱融着不織布（以下「レーヨ
ン−PP不織布」という）やポリエステル繊維も
しくはポリアクリロニトリル繊維100重量％とか
らなる部分熱融着不織布（以下「PET不織布」
もしくは「PAN不織布」という）からなる不織
布ライナー材を内面にラミネートしたものが使用
されている。(Prior art and its problems) Conventionally, magnetic disk jackets have been made using a partially heat-sealed nonwoven fabric (hereinafter referred to as "rayon-PP nonwoven fabric") consisting of 70 to 80% by weight of rayon fibers and 30 to 20% by weight of polypropylene fibers. A partially heat-bonded nonwoven fabric (hereinafter referred to as "PET nonwoven fabric") consisting of 100% by weight polyester fiber or polyacrylonitrile fiber.
The inner surface is laminated with a non-woven liner material made of ``PAN non-woven fabric''.
このレーヨン−PP不織布は熱融着する成分が
ポリプロピレン繊維だけであるため、レーヨン繊
維の固定が十分でなく、レーヨン繊維の抜けや毛
羽立ちが生じ易く、更には開口部の打抜き工程な
どの際にレーヨン繊維を固定していた熱融着部の
ポリプロピレンの一部が剥離もしくは破壊され、
樹脂粉として発生するという欠点があつた。この
ため、レーヨン−PP不織布をライナー材に使用
すると、ライナー自体の発塵性が高く、異物も発
生し易く、磁気ヘツドや磁気デイスク表面を傷つ
けるといつたトラブルが生じることがあつた。 Since this rayon-PP nonwoven fabric has only polypropylene fibers as its heat-sealable component, the rayon fibers are not fixed sufficiently, and the rayon fibers tend to come off or become fluffy. A part of the polypropylene in the heat-sealed part that fixed the fibers was peeled off or destroyed.
The drawback was that it was generated as resin powder. For this reason, when a rayon-PP nonwoven fabric is used as a liner material, the liner itself is highly dust-generating and tends to generate foreign matter, causing problems such as damage to the magnetic head and magnetic disk surface.
一方、PET不織布やPAN不織布は構成繊維全
体が熱可塑性繊維からなるため発塵性は低く、レ
ーヨン−PP不織布に見られるような欠点はない
が、これをライナー材として、合成樹脂製ジヤケ
ツト素材の内面にラミネートする際に問題があつ
た。すなわち、合成樹脂製ジヤケツト素材とライ
ナー材のラミネートは一般に加熱エンボスロール
や熱融着のための凸部を設けた加熱平板などを用
いて、温度230〜270℃の条件でライナー材側から
加圧することにより行われるが、これらの条件に
おいては、ライナー材を構成する繊維が熱可塑性
繊維のみからなるため、実質的にライナー材自体
が溶融して穴があくので、ラミネート強度が低く
なり、更には熱可塑性繊維やジヤケツト素材の溶
融した成分が、加熱平板の凸部が押し込まれたと
きその周囲にはみ出したり、この凸部を抜くとき
連れそつて突出したりして個化した、いわゆるか
えりが生じるので、磁気デイスク表面に傷をつけ
るおそれもあつた。また、もし仮にライナー自体
が溶融しない様な条件を選ぶと、ライナー強度が
低く、実用に耐えないものしか得られなかつた。 On the other hand, PET nonwoven fabrics and PAN nonwoven fabrics have low dust generation because their entire constituent fibers are thermoplastic fibers, and they do not have the drawbacks seen in rayon-PP nonwoven fabrics. There was a problem when laminating the inside. In other words, lamination of synthetic resin jacket material and liner material is generally performed by applying pressure from the liner material side at a temperature of 230 to 270°C using a heated embossing roll or a heated flat plate with convex portions for heat fusion. However, under these conditions, the fibers that make up the liner material consist only of thermoplastic fibers, so the liner material itself essentially melts and creates holes, which reduces the laminate strength and furthermore Molten components of thermoplastic fibers and jacket materials may protrude around the protrusions of the heating plate when they are pushed in, or may become individualized when the protrusions are removed, resulting in so-called burrs. There was also the risk of damaging the surface of the magnetic disk. Furthermore, if conditions were chosen such that the liner itself would not melt, the strength of the liner would be so low that it would not be practical.
（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、発塵性が低く、かつラミネート
特性の良い磁気デイスク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 prior art, and its purpose is to obtain a magnetic disk jacket with low dust generation and good lamination characteristics.
（考案の構成及び作用）
本考案は熱可塑性繊維からなるＡ層と、非熱可
塑性繊維５〜50重量％と熱可塑性繊維95〜50重量
％とからなるＢ層とを含む２層以上の層からなる
不織布ライナー材が、磁気デイスクと接触する層
が該Ａ層となるように合成樹脂製ジヤケツト素材
の内面にラミネートされていることを特徴とする
磁気デイスクジヤケツトである。(Structure and operation of the invention) The invention consists of two or more layers including a layer A made of thermoplastic fibers and a layer B made of 5 to 50% by weight of non-thermoplastic fibers and 95 to 50% by weight of thermoplastic fibers. This magnetic disk jacket is characterized in that a nonwoven fabric liner material consisting of the following is laminated on the inner surface of a synthetic resin jacket material so that the layer A contacts the magnetic disk.
本考案の磁気デイスクジヤケツトは例えば第１
図に示す展開図に基いて作られる。すなわち、塩
化ビニル、ABS樹脂などの合成樹脂製ジヤケツ
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、加熱平板を用いてラミネートし、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をラミネート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
り込んで袋状に接着して作られる。第２図は、こ
の様にして得られた磁気デスイクジヤケツト１の
断面図である。 The magnetic disk jacket of the present invention is, for example, the first magnetic disk jacket.
It is made based on the development diagram shown in the figure. That is, a non-woven liner material 3 is laminated on the inner surface of a jacket material 2 made of synthetic resin such as vinyl chloride or ABS resin using a heated embossing roll and a heated flat plate, and a center hole is formed corresponding to the insertion position of the magnetic disk 4 shown by the dotted line. 5. Punch out the openings for the head window 6, index hole 7, etc., fold it along the line A-A' shown in Figure 1 with the side laminated with the nonwoven fabric liner material 3 inside, and then fold in the peripheral adhesive part 8. It is made by gluing it into a bag shape. FIG. 2 is a sectional view of the magnetic disk jacket 1 obtained in this manner.
本考案の磁気デスイクジヤケツトに使用する不
織布ライナー材３には熱可塑性繊維からなるＡ層
９と、非熱可塑性繊維５〜50重量％と熱可塑性繊
維95〜50重量％とからなるＢ層１０とを積層し、
２層以上の層状物とした後に、部分熱融着などの
手段により結合した不織布が用いられる。ここで
熱可塑性繊維にはポリエステル繊維、ポリアクリ
ロニトリル繊維、ポリプロピレン繊維などが使用
できるが、開口部を形成する時の打ち抜き性をあ
げて、毛羽の発生を押えるために、これら繊維の
単繊維強度は1.0〜4.0ｇ／ｄの範囲にあることが
望ましい。また非熱可塑性繊維はラミネート時に
加熱圧着しても溶融しないものであれば使用で
き、例えば、レーヨン繊維、綿、麻、芳香族ポリ
アミド繊維などが適しているが、単繊維強度など
の点からレーヨン繊維がより好ましい。 The nonwoven fabric liner material 3 used in the magnetic desk jacket of the present invention includes an A layer 9 made of thermoplastic fibers, and a B layer made of 5 to 50% by weight of non-thermoplastic fibers and 95 to 50% by weight of thermoplastic fibers. 10 and stacked,
A nonwoven fabric is used that is made into a layered material of two or more layers and then bonded by means such as partial heat fusion. Here, polyester fibers, polyacrylonitrile fibers, polypropylene fibers, etc. can be used as thermoplastic fibers, but in order to improve punching properties when forming openings and suppress the generation of fuzz, the single fiber strength of these fibers is It is desirable that it be in the range of 1.0 to 4.0 g/d. In addition, non-thermoplastic fibers can be used as long as they do not melt even when heat-pressed during lamination. For example, rayon fibers, cotton, linen, aromatic polyamide fibers, etc. are suitable, but rayon fibers Fibers are more preferred.
上記不織布ライナー材３を用いると、ラミネー
ト時に非熱可塑性繊維が溶融することなく、合成
樹脂性ジヤケツト素材２に埋め込まれるため、不
織布ライナー材３と合成樹脂製ジヤケツト素材２
とは強固に結合され、高いラミネート強度が得ら
れる。また、上記不織布ライナー材３を用いると
溶融樹脂によるかえりもでない。これは非熱可塑
性繊維が溶融せずに残つて、この骨格の周囲に熱
可塑性繊維やジヤケツト素材の溶融した成分が保
持されるため、溶融成分がライナー材の表面には
み出したり、突出したりしにくくなるからと推定
される。 When the non-woven fabric liner material 3 is used, the non-thermoplastic fibers are not melted during lamination and are embedded in the synthetic resin jacket material 2, so that the non-woven fabric liner material 3 and the synthetic resin jacket material 2 are bonded together.
It is firmly bonded to the laminate, resulting in high lamination strength. Moreover, when the nonwoven fabric liner material 3 is used, there is no burr caused by the molten resin. This is because the non-thermoplastic fibers remain unmelted and the molten components of the thermoplastic fibers and jacket material are retained around this skeleton, making it difficult for the molten components to protrude or protrude onto the surface of the liner material. It is presumed that this is because
この様にラミネート強度を高め、溶融した樹脂
のかえりを防ぐためにＢ層１０には少なくとも５
重量％の非熱可塑性繊維が含まれていなければな
らないが、この非熱可塑性繊維の量があまり多く
なると、毛羽の発生や発塵の増加が生じるので、
50重量％を超えてはならない。なお、Ｂ層１０に
含まれる非熱可塑性繊維の量は10〜40重量％の範
囲にあればより好ましい。 In this way, in order to increase the lamination strength and prevent burrs of the molten resin, the B layer 10 contains at least 5
% by weight of non-thermoplastic fibers must be included; however, if the amount of non-thermoplastic fibers is too large, fluffing and increased dust generation will occur.
Must not exceed 50% by weight. In addition, the amount of non-thermoplastic fibers contained in the B layer 10 is more preferably in the range of 10 to 40% by weight.
第３図及び第４図は本考案に使用する不織布ラ
イナー材３の断面模型図であり、第３図はＡ層／
Ｂ層からなる２層構造の例を、第４図はＡ層／Ｂ
層／Ａ層からなる３層構造の例を示している。こ
の積層数や積層順序は適宜選択すればよく、Ａ層
９、Ｂ層１０の他に非熱可塑性繊維を含むがその
量が５重量％未満である層が同時に積層されてい
てもよい。しかし、非熱可塑性繊維の量が50重量
％を超える層は発塵性の点で好ましくない。ま
た、非熱可塑性繊維の量は不織布ライナー材３を
構成する繊維全体に対して２〜25重量％の範囲で
あることが好ましく、２重量％未満ではラミネー
ト強度が不足するおそれがあり、25重量％を超え
ると発塵が生じやすくなる。とくに好ましい非熱
可塑性繊維の量は不織布ライナー材３を構成する
繊維全体に対して５〜20重量％である。 FIG. 3 and FIG. 4 are cross-sectional model diagrams of the nonwoven fabric liner material 3 used in the present invention, and FIG.
Figure 4 shows an example of a two-layer structure consisting of layer B.
An example of a three-layer structure consisting of layer/A layer is shown. The number of layers and the order of lamination may be appropriately selected, and in addition to the A layer 9 and the B layer 10, a layer containing non-thermoplastic fibers in an amount of less than 5% by weight may be laminated at the same time. However, a layer in which the amount of non-thermoplastic fibers exceeds 50% by weight is unfavorable in terms of dust generation. Further, the amount of non-thermoplastic fibers is preferably in the range of 2 to 25% by weight based on the total fibers constituting the nonwoven liner material 3. If it is less than 2% by weight, there is a risk that the lamination strength will be insufficient; If it exceeds %, dust tends to occur. A particularly preferred amount of non-thermoplastic fibers is 5 to 20% by weight based on the total fibers constituting the nonwoven liner material 3.
なお、ここで磁気デイスクに接触するのは必ら
ずＡ層９となるように、不織布ライナー材３を積
層し、かつ合成樹脂製ジヤケツト素材の内面にラ
ミネートしておく必要がある。この様にＡ層９を
配置させることにより、不織布ライナー材３から
の発塵を飛躍的に低下させることができる。 Here, it is necessary to laminate the nonwoven fabric liner material 3 and laminate it on the inner surface of the synthetic resin jacket material so that the A layer 9 is always in contact with the magnetic disk. By arranging layer A 9 in this manner, dust generation from nonwoven fabric liner material 3 can be dramatically reduced.
（実施例および比較例）
実施例 １
1.5d／51mmのポリエステル繊維（単繊維強度
1.5ｇ／ｄ）100重量％からなる目付25ｇ／m2のＡ
層と、1.5d／51mmのポリエステル繊維（単繊維強
度1.5ｇ／ｄ）70重量％と1.5d／51mmのレーヨン
繊維30重量％とからなる目付10ｇ／m2のＢ層とを
積層し、温度205℃、線圧25Kg／cmの条件でエン
ボスカレンダーに通して不織布を得た。次いで、
磁気デイスクと接触する側にＡ層がくるように
（従つて、この場合合成樹脂製ジヤケツト素材と
接触する側にはＢ層がくる）、この不織布と塩化
ビニル樹脂製ジヤケツト素材とを250℃で熱融着
することによりラミネートし、開口部等を打抜き
成形して磁気デイスクジヤケツトを得た。(Examples and Comparative Examples) Example 1 1.5d/51mm polyester fiber (single fiber strength
A with a basis weight of 25g/ m2 consisting of 100% by weight (1.5g/d)
layer and B layer with a basis weight of 10 g/m 2 consisting of 70% by weight of 1.5d/51mm polyester fiber (single fiber strength 1.5g/d) and 30% by weight of 1.5d/51mm rayon fiber, and A nonwoven fabric was obtained by passing it through an embossing calender at 205°C and a linear pressure of 25 kg/cm. Then,
This nonwoven fabric and the jacket material made of vinyl chloride resin were heated at 250°C so that the A layer was on the side that would contact the magnetic disk (therefore, in this case, the B layer would be on the side that would be in contact with the synthetic resin jacket material). The magnetic disc jacket was laminated by heat-sealing, and the openings etc. were punched out to obtain a magnetic disk jacket.
このジヤケツトは不織布ライナー材とジヤケツ
ト素材とのラミネート強度が110ｇ／６ポイント
と大きく、また不織布ライナー材表面にはかえり
も発生せず、更には樹脂粉や羽毛などによる発塵
性も極めて低かつた。 This jacket has a high lamination strength of 110 g/6 points between the non-woven liner material and the jacket material, and there is no burr on the surface of the non-woven liner material, and furthermore, the generation of dust from resin powder and feathers is extremely low. .
なお、ラミネート強度の測定は、縦横一定間隔
（例えば３mm間隔）で並んだ点状の熱融着部を有
するジヤケツトを、横一列に６ポイントの熱融着
部が入るように短冊状に切断した試験片を用い、
引張試験機により測定する。測定方法は上記試験
片の一端を剥離し、ライナー材とジヤケツト素材
とを上下別々のチヤツクに挾み、10cm／分の速度
で、10cm引張つて剥離させ、その間に働く力を測
定する。力は、横一列の熱融着部（すなわち、６
ポイントの熱融着部）を通過するごとにピーク
（力の最大値）を描くので、10cm引張る間に出る
ピーク（例えば、熱融着部が３mm間隔であれば33
個のピークが出る）の平均値をとり、これを熱融
着部６ポイント当りの強度として表現している。 The laminate strength was measured by cutting a jacket with dotted heat-sealed parts arranged at regular intervals (e.g., 3 mm intervals) into strips so that six points of heat-sealed parts were arranged in a row horizontally. Using a test piece,
Measured using a tensile tester. The measurement method is to peel off one end of the above test piece, sandwich the liner material and jacket material between upper and lower chucks, and peel by pulling 10 cm at a speed of 10 cm/min, and measure the force acting between them. The force is applied to a horizontal row of thermal welds (i.e. 6
Since a peak (maximum value of force) is drawn each time the point passes through the heat welded part), the peak that appears while pulling 10 cm (for example, if the heat welded parts are 3 mm apart, 33
The average value of 6 peaks is taken, and this is expressed as the strength per 6 points of the heat-sealed part.
比較例 １
1.5d／51mmのレーヨン繊維75重量％と1.5d／51
mmのポリプロピレン繊維25重量％とからなる目付
35ｇ／m2のウエブを、温度200℃、線圧10Kg／cm
の条件でエンボスカレンダーに通して不織布を得
た。次いで、この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250℃で熱融着す
ることによりラミネートし、開口部等を打ち抜き
形成して磁気デイスクジヤケツトを得た。Comparative example 1 1.5d/51mm rayon fiber 75% by weight and 1.5d/51
Fabric weight consisting of 25% by weight of mm polypropylene fibers
A 35g/ m2 web at a temperature of 200℃ and a linear pressure of 10Kg/cm.
A nonwoven fabric was obtained by passing it through an embossing calender under the following conditions. Next, this nonwoven fabric was laminated as a liner material to a jacket material made of vinyl chloride resin by heat-sealing at 250°C, and openings etc. were punched out to obtain a magnetic disk jacket.
このジヤケツトはラミネート強度が125ｇ／６
ポイントと強く、ライナー材表面にかえりも生じ
ないので、ラミネート特性に優れているが、打ち
抜き工程などを経ると、毛羽やポリプロピレン樹
脂粉の発生が甚しく、ヘツドやデイスク表面を傷
つけるといつたトラブルが生じ易かつた。 This jacket has a laminate strength of 125g/6
It has excellent laminating properties as it is strong and does not cause burrs on the surface of the liner material, but when it goes through the punching process etc., it generates a lot of fuzz and polypropylene resin powder, which can cause problems such as damage to the head and disk surface. was likely to occur.
比較例 ２
1.5d／51mmのポリエステル繊維（単繊維強度
1.5ｇ／ｄ）100重量％からなる目付35ｇ／m2のウ
エブを、温度205℃、線圧25Kg／cmの条件で、エ
ンボスカレンダーに通して不織布を得た。次い
で、この不織布ライナー材として塩化ビニル製ジ
ヤケツト素材に270℃で熱融着することによりラ
ミネートし、開口部等を打ち抜き形成して磁気デ
イスクジヤケツトを得た。Comparative example 2 1.5d/51mm polyester fiber (single fiber strength
A web with a basis weight of 35 g/m 2 consisting of 100% by weight of 1.5 g/d) was passed through an embossing calender at a temperature of 205° C. and a linear pressure of 25 Kg/cm to obtain a nonwoven fabric. Next, this nonwoven fabric liner material was laminated to a vinyl chloride jacket material by heat-sealing at 270°C, and openings etc. were punched out to obtain a magnetic disk jacket.
このジヤケツトは打ち抜き性に優れ、羽毛の発
生や、樹脂粉の発塵がほとんど見られなかつた
が、ラミネート強度が70ｇ／６ポイントと弱く、
ライナー材の表面にかえりが出て、これが磁気デ
イスク表面を傷つけるといつた欠点があつた。 This jacket had excellent punching properties, with almost no feathers or resin dust, but the lamination strength was weak at 70g/6 points.
The drawback was that burrs appeared on the surface of the liner material, which could damage the surface of the magnetic disk.
実施例 ２
2d／51mmのアクリル繊維（単繊維強度2.8ｇ／
ｄ）100重量％からなる目付12.5ｇ／m2のＡ層と、
2d／51mmのアクリル繊維（単繊維強度2.8ｇ／ｄ）
70重量％と1.5d／51mmのレーヨン繊維30重量％と
からなる目付10ｇ／m2のＢ層とをＡ層／Ｂ層／Ａ
層の順に積層し、温度200℃、線圧25Kg／cmの条
件で、エンボスカレンダーに通して不織布を得
た。次いで、この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250℃で熱融着
することによりラミネートし、開口部等を打ち抜
き成形して磁気デイスクジヤケツトを得た。Example 2 2d/51mm acrylic fiber (single fiber strength 2.8g/
d) A layer with a basis weight of 12.5 g/m 2 consisting of 100% by weight;
2d/51mm acrylic fiber (single fiber strength 2.8g/d)
A layer/B layer/A layer with a basis weight of 10 g/ m2 consisting of 70% by weight and 30% by weight of 1.5d/51mm rayon fiber.
The layers were laminated in order and passed through an embossing calender at a temperature of 200°C and a linear pressure of 25 kg/cm to obtain a nonwoven fabric. Next, this nonwoven fabric was used as a liner material and laminated by heat-sealing at 250° C. to a jacket material made of vinyl chloride resin, and openings and the like were punched out to obtain a magnetic disk jacket.
このジヤケツトはラミネート強度が115ｇ／６
ポイントと大きく、またライナー材表面のかえり
は全くなかつた。更には、樹脂粉や毛羽の発生も
ほとんどなかつた。ここで使用する不織布ライナ
ー材は、表裏面ともにＡ層が存在するため、実施
例１の場合のようにとくに表裏を注意してラミネ
ートする必要がないので、取り扱いが簡便であつ
た。 This jacket has a laminate strength of 115g/6
The point was large, and there were no burrs on the surface of the liner material. Furthermore, there was almost no generation of resin powder or fluff. Since the nonwoven fabric liner material used here has the A layer on both the front and back sides, there is no need to laminate the front and back sides with special care as in Example 1, so it was easy to handle.
（考案の効果）
本考案の磁気デイスクジヤケツトは、熱可塑性
繊維からなるＡ層と、非熱可塑性繊維５〜50重量
％と熱可塑性繊維95〜50重量％とからなるＢ層と
を含む２層以上の層からなる不織布ライナー材
が、磁気デイスクと接触する層が該Ａ層となるよ
うに合成樹脂製ジヤケツト素材の内面にラミネー
トされた構造となつているので、ラミネート強度
が高く、ラミネートされたライナー材の表面にか
えりが生じることもなく、更には毛羽や樹脂粉に
よる発塵性も極めて低い。従つて、本考案の磁気
デイスクジヤケツトは長期に亘る使用に際して
も、磁気デイスクや磁気ヘツドに損傷をおこした
り、デイスクの回転が阻害されるといつたトラブ
ルはなく、安定したクリーニング効果と耐久性が
期待できる極めて実用性の高いものである。(Effects of the invention) The magnetic disk jacket of the invention includes two layers: an A layer made of thermoplastic fibers and a B layer made of 5 to 50% by weight of non-thermoplastic fibers and 95 to 50% by weight of thermoplastic fibers. The structure is such that the non-woven fabric liner material consisting of more than one layer is laminated on the inner surface of the synthetic resin jacket material so that the layer in contact with the magnetic disk is the A layer, so the lamination strength is high and the laminated There is no burr on the surface of the liner material, and furthermore, dust generation due to fluff and resin powder is extremely low. Therefore, even when the magnetic disk jacket of the present invention is used for a long period of time, it does not cause damage to the magnetic disk or magnetic head or prevent the rotation of the disk, and has a stable cleaning effect and durability. This is an extremely practical product that can be expected to provide the following benefits.
第１図は本考案の磁気デイスクジヤケツトの展
開図の一例であり、第２図は磁気デイスクを収納
した状態の本考案の磁気デイスクジヤケツトの断
面図である。第３図は本考案の磁気デイスクジヤ
ケツトに使用する不織布ライナー材の一例を示す
断面模型図であり、第４図は不織布ライナー材の
他の例を示す断面模型図である。
１……磁気デイスクジヤケツト、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……熱可塑性繊維からな
るＡ層、１０……非熱可塑性繊維５〜50重量％と
熱可塑性繊維95〜50重量％とからなるＢ層。
FIG. 1 is an example of a developed view of the magnetic disk jacket of the present invention, and FIG. 2 is a sectional view of the magnetic disk jacket of the present invention in a state in which a magnetic disk is accommodated. FIG. 3 is a cross-sectional model diagram showing one example of the non-woven fabric liner material used in the magnetic disk jacket of the present invention, and FIG. 4 is a cross-sectional model diagram showing another example of the non-woven fabric liner material. 1...Magnetic disk jacket, 2...Synthetic resin jacket material, 3...Nonwoven fabric liner material,
4... Magnetic disk, 9... Layer A consisting of thermoplastic fibers, 10... Layer B consisting of 5-50% by weight of non-thermoplastic fibers and 95-50% by weight of thermoplastic fibers.
Claims (1)
５〜50重量％と熱可塑性繊維95〜50重量％とから
なるＢ層とを含む２層以上の層からなる不織布ラ
イナー材が、磁気デイスクと接触する層が該Ａ層
となるようにラミネートされていることを特徴と
する磁気デイスクジヤケツト。 A nonwoven fabric liner material consisting of two or more layers including a layer A consisting of thermoplastic fibers and a layer B consisting of 5 to 50% by weight of non-thermoplastic fibers and 95 to 50% by weight of thermoplastic fibers is used for magnetic disks. A magnetic disk jacket characterized in that the layer A is laminated so that the contacting layer is the layer A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985101319U JPH0510291Y2 (en) | 1985-07-02 | 1985-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985101319U JPH0510291Y2 (en) | 1985-07-02 | 1985-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6211279U JPS6211279U (en) | 1987-01-23 |
| JPH0510291Y2 true JPH0510291Y2 (en) | 1993-03-12 |
Family
ID=30971949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985101319U Expired - Lifetime JPH0510291Y2 (en) | 1985-07-02 | 1985-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510291Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60219685A (en) * | 1984-04-17 | 1985-11-02 | Asahi Chem Ind Co Ltd | Liner for floppy disc |
-
1985
- 1985-07-02 JP JP1985101319U patent/JPH0510291Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60219685A (en) * | 1984-04-17 | 1985-11-02 | Asahi Chem Ind Co Ltd | Liner for floppy disc |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6211279U (en) | 1987-01-23 |
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