JPH0312084A - Magnetic disk body - Google Patents
Magnetic disk bodyInfo
- Publication number
- JPH0312084A JPH0312084A JP14630089A JP14630089A JPH0312084A JP H0312084 A JPH0312084 A JP H0312084A JP 14630089 A JP14630089 A JP 14630089A JP 14630089 A JP14630089 A JP 14630089A JP H0312084 A JPH0312084 A JP H0312084A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- adhesive
- disk body
- hub
- liquid
- 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
- 239000000853 adhesive Substances 0.000 claims abstract description 36
- 230000001070 adhesive effect Effects 0.000 claims abstract description 36
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 26
- 230000002093 peripheral effect Effects 0.000 description 10
- 150000002894 organic compounds Chemical class 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 125000003396 thiol group Chemical group [H]S* 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 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
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- -1 urethane compound Chemical class 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ディスクカートリッジに収納された磁気ディ
スク体、より詳しくは、ハブと磁気ディスクとを接着す
る接着剤に特徴を有する磁気ディスク体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk body housed in a disk cartridge, and more particularly, to a magnetic disk body characterized by an adhesive bonding a hub and a magnetic disk. .
従来の磁気ディスク体としては、実開昭6186870
号公報及び特開昭63−69081号公報等に記載され
たものが知られている。As a conventional magnetic disk body, Utility Model No. 6186870
Those described in Japanese Patent Application Publication No. 63-69081 and the like are known.
実開昭61−86870号公報に記載の磁気ディスク体
は、ハブのフランジ部と磁気ディスクの内周部とを該フ
ランジ部の全周に亘って配置された合成樹脂帯を介して
接着することによって接着部分から発生する歪を緩和し
たものである。The magnetic disk body described in Japanese Utility Model Application Publication No. 61-86870 has a method in which the flange portion of the hub and the inner peripheral portion of the magnetic disk are bonded together via a synthetic resin band disposed around the entire circumference of the flange portion. This is to alleviate the strain generated from the bonded part.
また、特開昭63−69081号公報に記載の磁気ディ
スク体は、ハブのフランジ部に該フランジ部の色とは異
なった色に着色した接着剤を塗布して接着剤の塗布状態
を検出し易くすることによってハブのフランジ部と磁気
ディスクの内周部とを確実に接着して不良品の発生を軽
減したものである。Furthermore, the magnetic disk body described in Japanese Patent Application Laid-Open No. 63-69081 applies an adhesive colored in a color different from that of the flange to the flange of the hub, and detects the adhesive application state. This makes it possible to reliably bond the flange portion of the hub and the inner peripheral portion of the magnetic disk, thereby reducing the occurrence of defective products.
また、上述した磁気ディスク体の他、ハブのフランジ部
に両面粘着性リングによって接着した後ハブのフランジ
部と磁気ディスクの内周部を接着してこれら両者を一体
化した磁気ディスク体が知られている。In addition to the above-mentioned magnetic disk body, there is also known a magnetic disk body in which the flange of the hub is adhered to the flange of the hub using a double-sided adhesive ring, and then the flange of the hub and the inner periphery of the magnetic disk are bonded to integrate the two. ing.
しかしながら、実開昭61−86870号公報及び特開
昭63−69081号公報に記載の各磁気ディスク体は
、アルキルアクリレート等の接着剤を用いているため、
接着剤が供給時における安定性を欠き、接着剤を供給す
る場合等の作業性が悪く、接着工程上好ましくなかった
。更に、上記接着剤は湿度膨張が大きいが、金属等から
なるハブは湿度膨張がないため、これらの接着部におけ
るハブと磁気ディスクとの膨張の大きさに差が生じて磁
気ディスクに変形をもたらす虞れがあった。However, each magnetic disk body described in Utility Model Application Publication No. 61-86870 and Japanese Patent Application Publication No. 63-69081 uses an adhesive such as alkyl acrylate.
The adhesive lacked stability during supply, and the workability when supplying the adhesive was poor, which was unfavorable in terms of the bonding process. Furthermore, the above adhesive has a large humidity expansion, but a hub made of metal or the like does not, so there is a difference in the magnitude of expansion between the hub and the magnetic disk at these bonded parts, causing deformation of the magnetic disk. There was a risk.
また、両面粘着性リングを用いて接着した磁気ディスク
体は、使用前の両面粘着性リングがその両面に制御紙及
び剥離紙を有するため、ハブに磁気ディスクを接着する
際に、制御紙及び剥離紙を剥離する必要があり、その接
着工程が複雑になる。In addition, the magnetic disk body adhered using a double-sided adhesive ring has control paper and release paper on both sides of the double-sided adhesive ring before use. The paper must be peeled off, which complicates the adhesion process.
また、両面粘着性リングは、その歩留りが低く、また、
不織布、PET等の基材が必要なため、コストが高いと
いう課題があった。更に、磁気ディスク体が高温と低温
との間で温度変化を繰り返す間に、両面粘着性リングの
高温時におけるクリープ特性が劣化し、磁気ディスクが
ハブのフランジ部において位置ずれを生じるという課題
があった。In addition, the double-sided adhesive ring has a low yield, and
Since a base material such as nonwoven fabric or PET is required, there is a problem in that the cost is high. Furthermore, while the magnetic disk body repeatedly changes temperature between high and low temperatures, the creep characteristics of the double-sided adhesive ring at high temperatures deteriorate, causing the magnetic disk to become misaligned at the flange of the hub. Ta.
従って、本発明の目的は、接着剤の供給作業の利便性を
向上させることができ、且つ温度及び湿度に対して安定
な磁気ディスク体を提供することにある。Therefore, an object of the present invention is to provide a magnetic disk body that can improve the convenience of adhesive supply work and is stable with respect to temperature and humidity.
〔課題を解決するための手段]
本発明者等は、供給時に安定しており且つ接着後に温度
及び湿度に対して安定している接着剤について種々検討
した結果、特定の2液硬化型の接着剤を用いることによ
って上記課題を解決し得ることを知見した。。[Means for Solving the Problems] As a result of various studies on adhesives that are stable at the time of supply and stable against temperature and humidity after bonding, the present inventors developed a specific two-component curing adhesive. It has been found that the above problems can be solved by using an agent. .
本発明は一1上記知見に基づいてなされたもので、フラ
ンジ部を有するハブと、該ハブのフランジ部に内周部で
接着された磁気ディスクとを備えた磁気ディスク体にお
いて、上記フランジ部と上記内周部とを非溶剤系で2液
硬化型のウレタン系接着剤によって接着したごとを特徴
とする磁気ディスク体を提供するものである。The present invention has been made based on the above findings, and provides a magnetic disk body comprising a hub having a flange portion and a magnetic disk whose inner circumferential portion is bonded to the flange portion of the hub. The object of the present invention is to provide a magnetic disk body characterized in that the inner peripheral portion is bonded to the magnetic disk body using a non-solvent, two-component curing urethane adhesive.
本発明の磁気ディスク体に用いられる接着剤は、2液硬
化型のウレタン系接着剤で、第1液と第2液とからなっ
ている。The adhesive used in the magnetic disk body of the present invention is a two-component curing type urethane adhesive, which is composed of a first liquid and a second liquid.
上記2液硬化型のウレタン系接着剤は、ソノ第1液とそ
の第2液とが反応してウレタン系化合物を生成して硬化
する接着剤で、該接着剤としては公知のものを用いるこ
とができる。The above-mentioned two-component curable urethane adhesive is an adhesive that cures by reacting the first component and its second component to produce a urethane compound, and a known adhesive may be used as the adhesive. I can do it.
上記第1液はイソシアナート基(−NGO)を有する有
機化合物であり、該第1液としては、例えば、2.4−
)リレンジイソシアナート、4゜4′−ジフェニルメタ
ンジイソシアナート、2゜4−トリレンジイソシアナー
トそれぞれとトリメチロールプロパンとの反応物等が挙
げられる。The first liquid is an organic compound having an isocyanate group (-NGO), and the first liquid includes, for example, 2.4-
) Reaction products of lylene diisocyanate, 4°4'-diphenylmethane diisocyanate, and 2°4-tolylene diisocyanate with trimethylolpropane.
また、上記第2液は水酸基、カルボンキシル基、アミノ
基、チオール基等の官能基を有する有機化合物であって
、上記イソシアナート基と反応する官能基を有する有機
化合物であり、該第2液としては、例えば、エチレンオ
キサイド、プロピレンオキサイド等を開環重合して得ら
れるポリエーテルポリオールまたはエチレングリコール
、ブタンジオール等の多価アルコールとアジピン酸、セ
バシン酸等の多価カルボン酸との反応から得られるポリ
エステルポリオール、末端をアミノ基またはチオール基
等で変性したポリアミド等が挙げられる。The second liquid is an organic compound having a functional group such as a hydroxyl group, a carboxyl group, an amino group, or a thiol group, and is an organic compound having a functional group that reacts with the isocyanate group. Examples include polyether polyols obtained by ring-opening polymerization of ethylene oxide, propylene oxide, etc., or polyhydric alcohols such as ethylene glycol, butanediol, and polyhydric carboxylic acids such as adipic acid and sebacic acid. Examples include polyester polyols, polyamides whose terminals are modified with amino groups or thiol groups, and the like.
また、上記接着剤は、非溶剤系の接着剤であり、このよ
うに非溶剤タイプであるため、溶剤を乾燥させる設備が
必要でなく1、また、速乾性を得ることができる。Further, the adhesive is a non-solvent type adhesive, and since it is a non-solvent type as described above, equipment for drying the solvent is not required1, and quick-drying properties can be obtained.
以下、第1図、第2図及び第3図に示す実施例に基づい
て本発明の磁気ディスクについて説明する。各図中、第
1図は磁気ディスクカートリッジを示す平面図、第2図
は磁気ディスクカートリンジから磁気ディスク体を取り
出して示す平面図、第3図は本発明の磁気ディスク体に
おけるハブに磁気ディスクを押圧してこれら両者を接着
する状態を示す図で第2図の■−■線方向の断面に相当
する部分拡大図である。The magnetic disk of the present invention will be described below based on the embodiments shown in FIGS. 1, 2, and 3. In each figure, Fig. 1 is a plan view showing a magnetic disk cartridge, Fig. 2 is a plan view showing a magnetic disk body taken out from the magnetic disk cartridge, and Fig. 3 is a plan view showing a magnetic disk body taken out from the magnetic disk cartridge of the present invention. FIG. 2 is a partially enlarged view corresponding to a cross section taken along the line ■--■ in FIG. 2, showing a state in which the two are bonded together by pressing.
本実施例の磁気ディスク体lは、ハブ11と該ハブ11
に接着剤によって接着された磁気ディスク12とから構
成され、第1図に示す如く、磁気ディスクジャケット2
内に回転自在に収納され、記録、再生に用いられる。The magnetic disk body l of this embodiment includes a hub 11 and a hub 11.
As shown in FIG. 1, the magnetic disk jacket 2 is
It is rotatably stored inside and used for recording and playback.
上記ハブ11は、第2図に示す如く周囲にフランジ部1
1Aが形成され、該フランジ部11Aにおいて上記磁気
の内周部12Aとが上述の如く接着剤によって接着され
ている。The hub 11 has a flange portion 1 around it as shown in FIG.
1A is formed, and the magnetic inner peripheral portion 12A is bonded to the flange portion 11A with an adhesive as described above.
而して、接着剤を用いて上記ハブ11と上記磁気ディス
ク12とを接着するには、第3図に示す如く、ハブ11
のフランジ部11Aにおける上記磁気ディスク12の内
周部12Aに当接する側の全周に亘り第1液3Aを塗布
し、また、上記磁気ディスク12の内周部12Aにおけ
る上記フランジ部11Aに当接する側の全周に亘り第2
液3Bを塗布した後、上記ハブ11のフランジ部11A
の位置に上記磁気ディスク12の内周部12Aの位置に
合わせて室温下で約2 kg / cdの圧力で数秒間
押圧する。その間に上記第1液3Aと上記第2液3Bと
が反応してウレタン系有機化合物を生成して上記ハブI
Iと上記磁気ディスク12とが接着する。尚、接着に際
し、接着剤として、例えば電化ハードロックUX200
ORを用いることができ、その第1液3A及び第2液3
Bの塗布量は略等量、具体的にはそれぞれ約2mgずつ
塗布することが好ましい。In order to bond the hub 11 and the magnetic disk 12 using adhesive, as shown in FIG.
Apply the first liquid 3A over the entire circumference of the flange portion 11A of the side that contacts the inner peripheral portion 12A of the magnetic disk 12, and also contact the flange portion 11A of the inner peripheral portion 12A of the magnetic disk 12. 2nd along the entire circumference of the side
After applying the liquid 3B, the flange portion 11A of the hub 11 is
It is pressed at a pressure of about 2 kg/cd at room temperature for several seconds at the position of the inner peripheral portion 12A of the magnetic disk 12. During that time, the first liquid 3A and the second liquid 3B react to generate a urethane-based organic compound, and the hub I
I and the magnetic disk 12 are bonded together. When bonding, use an adhesive such as Denka Hardrock UX200.
OR can be used, and the first liquid 3A and the second liquid 3
It is preferable to apply approximately equal amounts of B, specifically about 2 mg each.
本実施例の磁気ディスク体1に用いられる2液硬化型の
接着剤の第1液3A及び第2液3Bは共に溶剤を含有し
ておらず、また、それぞれは長時間安定しているため各
液3A、3Bの供給が簡便で、接着作業性を向上させる
ことができ、また、上述の如く溶剤を含有していないた
め乾燥設備が不要で設備を簡素化することができる。Both the first liquid 3A and the second liquid 3B of the two-component curing adhesive used for the magnetic disk body 1 of this embodiment do not contain a solvent, and each is stable for a long time. The liquids 3A and 3B can be easily supplied, improving adhesive workability, and as mentioned above, since they do not contain a solvent, drying equipment is not required, and the equipment can be simplified.
また、硬化した上記接着剤3は、高温、高温時において
温度、湿度に対して安定で膨張し難く、また高温時にお
けるクリープ特性が劣化し難く、ハブ11と磁気ディス
ク12の位置ずれが極めて小さく、記録、再生の安定性
が向上する。In addition, the cured adhesive 3 is stable and difficult to expand with respect to temperature and humidity at high temperatures, and its creep characteristics do not easily deteriorate at high temperatures, and misalignment between the hub 11 and the magnetic disk 12 is extremely small. , recording and playback stability is improved.
尚、上記実施例では、第1液3Aをハブ11のフランジ
部11Aに、第2液3Bを磁気ディスクI2の内周部1
2Aにそれぞれ塗布する場合について説明したが、本発
明の磁気ディスク体は、上記実施例における第1液3A
、第2液3Bの塗布部位を逆にして、第1液3Aを磁気
ディスク12の内周部12Aに、第2液3Bをハブ11
のフランジ部11Aに塗布してもよいことは明白である
。In the above embodiment, the first liquid 3A is applied to the flange portion 11A of the hub 11, and the second liquid 3B is applied to the inner peripheral portion 1 of the magnetic disk I2.
Although the case where the first liquid 3A is applied to each of the first liquid 3A in the above embodiment has been described, the magnetic disk body of the present invention is coated with the first liquid 3A in the above embodiment.
, the application parts of the second liquid 3B are reversed, and the first liquid 3A is applied to the inner peripheral part 12A of the magnetic disk 12, and the second liquid 3B is applied to the hub 11.
It is obvious that the coating may be applied to the flange portion 11A of the flange portion 11A.
また、第1液3Aと第2液3Bを、磁気ディスクあるい
はハブのいずれかに重ね合わせて塗布してもよい。Further, the first liquid 3A and the second liquid 3B may be applied to either the magnetic disk or the hub in a superimposed manner.
(発明の効果]
本発明の磁気ディスク体は、接着剤の供給作業の利便性
を向上させることができ、且つ温度及び湿度に対して安
定なものである。(Effects of the Invention) The magnetic disk body of the present invention can improve the convenience of adhesive supply work, and is stable against temperature and humidity.
第1図は磁気ディスクカートリンジを示す平面図、第2
図は磁気ディスクカートリッジから磁気ディスク体を取
り出して示す平面図、第3図は本発明の磁気ディスク体
におけるハブに磁気ディスクを押圧してこれら両者を接
着する状態を示す図で第2図の■−■線方向の断面図に
相当する図の部分拡大図である。
1;磁気ディスク体
3A;第1液 3B;第2液
11;ハブ
12;磁気ディスク
11A;フランジ部
12A;内周部Figure 1 is a plan view showing the magnetic disk cartridge, Figure 2 is a plan view showing the magnetic disk cartridge.
The figure is a plan view showing the magnetic disk body taken out from the magnetic disk cartridge, and FIG. 3 is a diagram showing a state in which a magnetic disk is pressed against the hub of the magnetic disk body of the present invention and the two are bonded together. It is a partially enlarged view of a figure corresponding to a cross-sectional view in the -■ line direction. 1; Magnetic disk body 3A; First liquid 3B; Second liquid 11; Hub 12; Magnetic disk 11A; Flange portion 12A; Inner peripheral portion
Claims (1)
部で接着された磁気ディスクとを備えた磁気ディスク体
において、上記フランジ部と上記内周部とを非溶剤系で
2液硬化型のウレタン系接着剤によって接着したことを
特徴とする磁気ディスク体。In a magnetic disk body comprising a hub having a flange portion and a magnetic disk whose inner circumferential portion is adhered to the flange portion of the hub, the flange portion and the inner circumferential portion are bonded using a non-solvent, two-component curing type. A magnetic disk body characterized by being bonded with a urethane adhesive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14630089A JP2731420B2 (en) | 1989-06-08 | 1989-06-08 | Magnetic disk body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14630089A JP2731420B2 (en) | 1989-06-08 | 1989-06-08 | Magnetic disk body |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0312084A true JPH0312084A (en) | 1991-01-21 |
JP2731420B2 JP2731420B2 (en) | 1998-03-25 |
Family
ID=15404563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14630089A Expired - Lifetime JP2731420B2 (en) | 1989-06-08 | 1989-06-08 | Magnetic disk body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2731420B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5574607A (en) * | 1992-08-28 | 1996-11-12 | Kao Corporation | Magnetic disk cartridge |
-
1989
- 1989-06-08 JP JP14630089A patent/JP2731420B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5574607A (en) * | 1992-08-28 | 1996-11-12 | Kao Corporation | Magnetic disk cartridge |
Also Published As
Publication number | Publication date |
---|---|
JP2731420B2 (en) | 1998-03-25 |
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