JPS645812B2 - - Google Patents
Info
- Publication number
- JPS645812B2 JPS645812B2 JP58061133A JP6113383A JPS645812B2 JP S645812 B2 JPS645812 B2 JP S645812B2 JP 58061133 A JP58061133 A JP 58061133A JP 6113383 A JP6113383 A JP 6113383A JP S645812 B2 JPS645812 B2 JP S645812B2
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- weight
- chloride resin
- parts
- resin
- 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
- 229920005989 resin Polymers 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 21
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000005865 ionizing radiation Effects 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 5
- 229920005672 polyolefin resin Polymers 0.000 claims description 5
- 150000003606 tin compounds Chemical class 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 238000004132 cross linking Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 description 7
- 241001422033 Thestylus Species 0.000 description 4
- 229920006026 co-polymeric resin Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- PRIUALOJYOZZOJ-UHFFFAOYSA-L 2-ethylhexyl 2-[dibutyl-[2-(2-ethylhexoxy)-2-oxoethyl]sulfanylstannyl]sulfanylacetate Chemical compound CCCCC(CC)COC(=O)CS[Sn](CCCC)(CCCC)SCC(=O)OCC(CC)CCCC PRIUALOJYOZZOJ-UHFFFAOYSA-L 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 2
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- DLPVXGNCDLJOSH-UHFFFAOYSA-N chloroethene;furan-2,5-dione Chemical compound ClC=C.O=C1OC(=O)C=C1 DLPVXGNCDLJOSH-UHFFFAOYSA-N 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- VDYWHVQKENANGY-UHFFFAOYSA-N 1,3-Butyleneglycol dimethacrylate Chemical compound CC(=C)C(=O)OC(C)CCOC(=O)C(C)=C VDYWHVQKENANGY-UHFFFAOYSA-N 0.000 description 1
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 description 1
- HWSSEYVMGDIFMH-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOC(=O)C(C)=C HWSSEYVMGDIFMH-UHFFFAOYSA-N 0.000 description 1
- LTHJXDSHSVNJKG-UHFFFAOYSA-N 2-[2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOCCOC(=O)C(C)=C LTHJXDSHSVNJKG-UHFFFAOYSA-N 0.000 description 1
- BXAAQNFGSQKPDZ-UHFFFAOYSA-N 3-[1,2,2-tris(prop-2-enoxy)ethoxy]prop-1-ene Chemical compound C=CCOC(OCC=C)C(OCC=C)OCC=C BXAAQNFGSQKPDZ-UHFFFAOYSA-N 0.000 description 1
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- YVHDRFKHKGNLNW-UHFFFAOYSA-L [dibutyl(octadecanoyloxy)stannyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCCCCCCCC YVHDRFKHKGNLNW-UHFFFAOYSA-L 0.000 description 1
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 1
- ZPOLOEWJWXZUSP-AATRIKPKSA-N bis(prop-2-enyl) (e)-but-2-enedioate Chemical compound C=CCOC(=O)\C=C\C(=O)OCC=C ZPOLOEWJWXZUSP-AATRIKPKSA-N 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- GWOWVOYJLHSRJJ-UHFFFAOYSA-L cadmium stearate Chemical compound [Cd+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O GWOWVOYJLHSRJJ-UHFFFAOYSA-L 0.000 description 1
- DHZSIQDUYCWNSB-UHFFFAOYSA-N chloroethene;1,1-dichloroethene Chemical compound ClC=C.ClC(Cl)=C DHZSIQDUYCWNSB-UHFFFAOYSA-N 0.000 description 1
- VSJDEWYENWWMAV-UHFFFAOYSA-N chloroethene;2-methylprop-2-enoic acid Chemical compound ClC=C.CC(=C)C(O)=O VSJDEWYENWWMAV-UHFFFAOYSA-N 0.000 description 1
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 description 1
- WCRDXYSYPCEIAK-UHFFFAOYSA-N dibutylstannane Chemical compound CCCC[SnH2]CCCC WCRDXYSYPCEIAK-UHFFFAOYSA-N 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- 229940117841 methacrylic acid copolymer Drugs 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Graft Or Block Polymers (AREA)
Description
【発明の詳細な説明】
本発明はレコードデイスクの製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a record disc.
いわゆるLPレコードと称する音楽用レコード
デイスクは、基本的には硬質塩化ビニル樹脂を主
成分としているが、スタンパ成形時の流動性を良
くするために比較的低重合度の塩化ビニル系樹脂
が使用されている。 Music record discs, so-called LP records, are basically made of hard vinyl chloride resin, but vinyl chloride resin with a relatively low degree of polymerization is used to improve fluidity during stamper molding. ing.
このため、得られるレコードデイスクの表面硬
度が低く、ピツクアツプ針の針圧をきわめて低い
状態にして演奏しなければならず、針と音溝との
望ましい接触が行われなくなり、高忠実度再生が
著しく阻害されることになる。 As a result, the resulting record disc has a low surface hardness and must be played with extremely low pressure on the pick-up stylus, which prevents the desired contact between the stylus and the sound groove, resulting in extremely poor high-fidelity playback. It will be hindered.
また、従来のレコードデイスクにおいては、塩
化ビニル系樹脂にステアリン酸鉛、ステアリン酸
カドミウム、ステアリン酸バリウム等のステアリ
ン酸金属石鹸を添加し、スタンパ成形時における
流動性および熱安定性を付与しているが、このよ
うな添加剤は経時的に、あるいはピツクアツプ針
で摩擦しているうちに表面にブルームし、これが
ピツクアツプ針に付着して音溝との望ましい接触
が行われなくなり、高忠実度再生が阻害されるこ
とも本発明者等によつて確認されている。 Furthermore, in conventional record discs, metal stearate soaps such as lead stearate, cadmium stearate, and barium stearate are added to the vinyl chloride resin to provide fluidity and thermal stability during stamper molding. However, over time or during friction with the pick-up needle, these additives can bloom on the surface and adhere to the pick-up needle, preventing the desired contact with the groove and preventing high-fidelity reproduction. The present inventors have also confirmed that it is inhibited.
本発明は表面硬度の低さやブルームに起因する
ピツクアツプ針と音溝との接触の不確実性を一掃
し、高忠度再生を実現できるレコードデイスクの
製造方法の提供を目的とするものである。 An object of the present invention is to provide a method for manufacturing a record disc that eliminates uncertainties in the contact between the pick-up needle and the sound groove due to low surface hardness and bloom, and can realize high-fidelity playback.
すなわち、本発明は平均重量度が400〜800の塩
化ビニル系樹指100重量部に対してポリオレフイ
ン樹脂0.1〜５重量部を主体として含有し、これ
に有機錫化合物および多官能モノマを添加してな
る塩化ビニル系樹脂コンパウンドをスタンパ成形
し、しかる後電離性放射線を照射して架橋せしめ
ることを特徴とするものである。 That is, the present invention mainly contains 0.1 to 5 parts by weight of a polyolefin resin based on 100 parts by weight of vinyl chloride resin having an average weight of 400 to 800, and an organic tin compound and a polyfunctional monomer are added thereto. This method is characterized by stamper molding a vinyl chloride resin compound, and then crosslinking it by irradiating it with ionizing radiation.
本発明において、塩化ビニル系樹脂としては、
塩化ビニル樹脂は勿論のこと、塩化ビニルを主体
とする共重合樹脂、たとえば塩化ビニル−酢酸ビ
ニル共重合樹脂、塩化ビニル−無水マレイン酸共
重合樹脂、塩化ビニル−無水フマル酸共重合樹
脂、塩化ビニル−メタクリル酸共重合樹脂、塩化
ビニル−塩化ビニリデン共重合樹脂などがあげら
れる。かかる塩化ビニル系樹脂は平均重合度が
400〜800の範囲のものが好ましく、400未満であ
ると成形後の強度が不十分であり、800を越える
と流動性が悪くスタンパの溝通りの転写性が損わ
れる。 In the present invention, the vinyl chloride resin includes:
Not only vinyl chloride resin, but also copolymer resins mainly composed of vinyl chloride, such as vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-maleic anhydride copolymer resin, vinyl chloride-fumaric anhydride copolymer resin, vinyl chloride -methacrylic acid copolymer resin, vinyl chloride-vinylidene chloride copolymer resin, etc. Such vinyl chloride resin has an average degree of polymerization.
A value in the range of 400 to 800 is preferable; if it is less than 400, the strength after molding will be insufficient, and if it exceeds 800, the fluidity will be poor and the transferability of the stamper along the groove will be impaired.
ポリオレフイン樹脂はスタンンパとの型離れを
良くするために添加するものであり、またこの樹
脂は混入量が約５重量％以下であれば塩化ビニル
系樹脂との相溶性が良いためブルームを起こすこ
とがない。 Polyolefin resin is added to improve mold separation from the stamper, and if the amount of this resin is less than about 5% by weight, it is compatible with vinyl chloride resin and does not cause blooming. do not have.
具体的にはポリエチレン、ボリプロピレンの如
きワツクス性ポリオレフイン重合体があげられ、
これらは単独または２以上組合せて塩化ビニル系
樹脂に混合される。 Specific examples include waxy polyolefin polymers such as polyethylene and polypropylene.
These may be mixed into the vinyl chloride resin alone or in combination of two or more.
ポリオレフイン樹脂の添加量は塩化ビニル系樹
脂100重量部に対して0.1〜５重量部の範囲とする
必要があり、0.1重量部未満ではスタンパとの型
離れ性が不十分であり、５重量部を越えると塩化
ビニル系樹脂との相溶性が損われ、相互分離を起
して混練ないし成形不能となる。 The amount of polyolefin resin added needs to be in the range of 0.1 to 5 parts by weight per 100 parts by weight of the vinyl chloride resin; if it is less than 0.1 part by weight, the mold releasability from the stamper is insufficient, If it exceeds this, the compatibility with the vinyl chloride resin will be impaired and mutual separation will occur, making it impossible to knead or mold.
有機錫化合物はスタンパ成形時の熱安定性なら
びに流動性を付与するために添加するもので、液
状のものが使用される。 The organic tin compound is added to provide thermal stability and fluidity during stamper molding, and a liquid type is used.
有機錫化合物は塩化ビニル系樹脂からブルーム
しがたく、またブルームしても液状であつて音溝
とピツクアツプ針との接触を妨害しない。 The organic tin compound does not easily bloom from the vinyl chloride resin, and even if it blooms, it remains in liquid form and does not interfere with the contact between the tone groove and the pick-up needle.
具体例としてはジブチルチンジラウレート、ジ
ブチルチンジマレート、ジブチルチンメルカプチ
ド、ジブチルチンジステアレートなどがあり、こ
れらは塩化ビニル系樹脂100重量部に対して0.1〜
３重量部の範囲で添加することが好ましい。な
お、本発明においては上記有機錫化合物と共にエ
ポキシ系安定剤を併用することも可能である。 Specific examples include dibutyltin dilaurate, dibutyltin dimaleate, dibutyltin mercaptide, and dibutyltin distearate, which are used in amounts of 0.1 to 100 parts by weight of vinyl chloride resin.
It is preferably added in an amount of 3 parts by weight. In addition, in the present invention, it is also possible to use an epoxy stabilizer together with the above-mentioned organotin compound.
本発明においては、上記各種成分に加えて多官
能モノマを添加し、成形体を電離性放射線で照射
架橋する際の架橋反応性を高めている。 In the present invention, a polyfunctional monomer is added in addition to the above-mentioned various components to enhance the crosslinking reactivity when the molded article is irradiated and crosslinked with ionizing radiation.
多官能モノマとしては、エチレングリコールジ
メタクリレート、トリエチレン−グリコールジメ
タクリレート、テトラエチレングリコールジメタ
クリレート、ポリエチレングリコールジメタクリ
レート、１・３−ブチレングリコールジメタクリ
レート、トリメチロールプロパントリメタクリレ
ート、テトラメチロールメタンテトラアクリレー
ト、ジアリルフマレート、ジアリルフタレート、
テトラアリルオキシエタン、トリアリルシアヌレ
ート等があり、使用に当つては照射後の表面硬度
に従つて適当量を配合すればよい。 Examples of polyfunctional monomers include ethylene glycol dimethacrylate, triethylene-glycol dimethacrylate, tetraethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, 1,3-butylene glycol dimethacrylate, trimethylolpropane trimethacrylate, tetramethylolmethanetetraacrylate, diallyl fumarate, diallyl phthalate,
Examples include tetraallyloxyethane and triallyl cyanurate, and when used, appropriate amounts may be added depending on the surface hardness after irradiation.
塩化ビニル系樹脂、ポリオレフイン樹脂、有機
錫化合物を含む混合物に多官能モノマを添加して
なるコンパウンドはスタンパ成形により所定形状
に成形され、その後電離性放射線の照射により架
橋され、表面硬度の高いレコードデイスクが得ら
れることになる。 A compound made by adding a polyfunctional monomer to a mixture containing a vinyl chloride resin, a polyolefin resin, and an organic tin compound is molded into a predetermined shape by stamper molding, and then crosslinked by irradiation with ionizing radiation to produce a record disc with high surface hardness. will be obtained.
電離性放射線としてはα線、β線、γ線、電子
線などがあり、照射線量は１〜20Mrad、好まし
くは２〜10Mradである。 Ionizing radiation includes alpha rays, beta rays, gamma rays, electron beams, etc., and the irradiation dose is 1 to 20 Mrad, preferably 2 to 10 Mrad.
以下、本発明の実施例について説明する。 Examples of the present invention will be described below.
実施例
・ 塩化ビニル−酢酸ビニル共重合樹脂（酢酸ビ
ニル量10重量％、平均重合度450） 100重量部
・ ポリエチレン（メルトインデツクス2.0）
３重量部
・ ジブチルチンメルカプチド １重量部
・ エピコート828（シエル社製） ３重量部
・ フアーネスブラツク １重量部
・ ノニオン系界面活性剤（油状） 0.1重量部
上記成分を均一に混合した混合物100重量部に
対してトリメチロールプロパントリメタクリレー
トを10重量部添加してコンパウンドを得、スタン
パ成形してから5Mradの電子線を照射してLPレ
コードデイスクを得た。Example - Vinyl chloride-vinyl acetate copolymer resin (vinyl acetate amount 10% by weight, average degree of polymerization 450) 100 parts by weight - Polyethylene (melt index 2.0)
3 parts by weight Dibutyltin mercaptide 1 part by weight Epicoat 828 (manufactured by Ciel) 3 parts by weight Furness Black 1 part by weight Nonionic surfactant (oil) 0.1 part by weight A mixture of the above components uniformly mixed 100 A compound was obtained by adding 10 parts by weight of trimethylolpropane trimethacrylate, molded with a stamper, and then irradiated with an electron beam of 5 Mrad to obtain an LP record disc.
得られたレコードをピツクアツプ針の針圧を
4gにして同一曲目を25回繰返し演奏した。 Pick up the obtained record and adjust the stylus pressure of the needle.
I played the same song 25 times at 4g.
主観的測定において極めて良好な音質が得ら
れ、また音質の変化は殆んど認められず、しかも
ピツクアツプ針への附着異物は目視では全く認め
られなかつた。 Extremely good sound quality was obtained in subjective measurements, and almost no change in sound quality was observed, and no foreign matter adhering to the pick-up needle was visually observed.
これに対し、スタンパ成形後架橋しないレコー
ドを上記と同様に針圧を4gにして演奏したとこ
ろ、当初は良好な音質であつたが、徐々に音質の
劣化が認められた。ピツクアツプ針には異物の付
着があつたのでレコードが摩耗していることが確
認された。 On the other hand, when a record that was not cross-linked after stamper molding was played with a stylus force of 4g as described above, the sound quality was initially good, but the sound quality gradually deteriorated. It was confirmed that the record was worn because foreign matter was attached to the pick-up needle.
また、従来のステアリン酸石鹸を配合したレコ
ードでは、ピツクアツプ針に白色のロウ状附着物
が認められ、回数を重ねるに従つて音質が劣化し
た。 In addition, with records containing conventional stearic acid soap, white waxy deposits were observed on the pick-up needle, and the sound quality deteriorated as the number of times the pickup was increased.
以上説明してきた通り、本発明によれば表面硬
度の高いレコードデイスクが得られ、針圧を高め
ることにより針と音溝との接触を確実にすること
ができ、またレコードデイスク表面への添加剤の
ブルーム防止と相俟つて極めて高い音響再生が可
能となる。 As explained above, according to the present invention, a record disc with high surface hardness can be obtained, contact between the stylus and the sound groove can be ensured by increasing the stylus pressure, and additives to the surface of the record disc can be obtained. Combined with the prevention of bloom, extremely high sound reproduction is possible.
Claims (1)
100重量部に対してポリオレフイン樹脂0.1〜５重
量部を主体として含有し、これに有機錫化合物お
よび多官能モノマを添加してなる塩化ビニル系樹
脂コンパウンドをスタンパ成形し、しかる後電離
性放射線を照射して架橋せしめることを特徴とす
るレコードデイスクの製造方法。1 Vinyl chloride resin with an average degree of polymerization of 400 to 800
A vinyl chloride resin compound containing mainly 0.1 to 5 parts by weight of polyolefin resin per 100 parts by weight, to which an organic tin compound and a polyfunctional monomer are added, is stamped and then irradiated with ionizing radiation. A method for producing a record disc, which comprises crosslinking the record disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58061133A JPS59185631A (en) | 1983-04-07 | 1983-04-07 | Manufacture of record disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58061133A JPS59185631A (en) | 1983-04-07 | 1983-04-07 | Manufacture of record disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59185631A JPS59185631A (en) | 1984-10-22 |
| JPS645812B2 true JPS645812B2 (en) | 1989-02-01 |
Family
ID=13162270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58061133A Granted JPS59185631A (en) | 1983-04-07 | 1983-04-07 | Manufacture of record disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59185631A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61181852A (en) * | 1985-02-06 | 1986-08-14 | Shin Etsu Chem Co Ltd | Vinyl chloride resin composition for floppy disk jacket |
| JPH04122075U (en) * | 1991-04-22 | 1992-10-30 | 株式会社ヱフエス企画 | Copy delivery slip |
| JP2020046322A (en) * | 2018-09-19 | 2020-03-26 | 多摩川精機株式会社 | Sound piece array structure for AE sensor, AE sensor, and manufacturing method thereof |
-
1983
- 1983-04-07 JP JP58061133A patent/JPS59185631A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59185631A (en) | 1984-10-22 |
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