JPS6387717A - Magnetic anisotropic sheet extruder - Google Patents
Magnetic anisotropic sheet extruderInfo
- Publication number
- JPS6387717A JPS6387717A JP23289786A JP23289786A JPS6387717A JP S6387717 A JPS6387717 A JP S6387717A JP 23289786 A JP23289786 A JP 23289786A JP 23289786 A JP23289786 A JP 23289786A JP S6387717 A JPS6387717 A JP S6387717A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- block
- magnetic
- mold
- field block
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims description 16
- 239000000696 magnetic material Substances 0.000 claims description 10
- 239000006247 magnetic powder Substances 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 13
- 239000002245 particle Substances 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000004913 activation Effects 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 6
- 150000002910 rare earth metals Chemical class 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 229920005992 thermoplastic resin Polymers 0.000 description 5
- 229920002725 thermoplastic elastomer Polymers 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003098 androgen Substances 0.000 description 1
- 229940030486 androgens Drugs 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は磁気異方性シートの押出成形型装置、詳しくは
厚み方向へ磁気的に異方化した熱可塑性樹脂又はエラス
トマー磁石シートを押出成形法により製造するための装
置に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an extrusion mold device for magnetically anisotropic sheets, and more specifically, to extrusion molding of thermoplastic resin or elastomer magnet sheets that are magnetically anisotropic in the thickness direction. This invention relates to an apparatus for manufacturing by a method.
（従来技術とその問題点）
従来、押出成形法によるシートの異方化は特公昭４７−
３４１９２号公報に示すように、フェライト系磁性粉末
原料にバイン゛ダーを混合し、それを磁場発生装置で取
巻いた押出機のノズル（成形型）から押出し、その押出
し時に外部磁場と剪断応力とを加えることによって磁性
粉末粒子を配向させることが知られている。(Prior art and its problems) Conventionally, extrusion molding was used to make sheets anisotropic.
As shown in Publication No. 34192, a binder is mixed with a ferrite-based magnetic powder raw material, and it is extruded from the nozzle (molding die) of an extruder surrounded by a magnetic field generator, and during extrusion, an external magnetic field and shear stress are applied. It is known to orient magnetic powder particles by adding .
しかしながら、希土類磁性粉末を前記従来法および成形
型装置に適用した場合には磁気異方化が不十分であるば
かりか、成形物が団子状となりシート状成形物を得るこ
とは不可能である。However, when rare earth magnetic powder is applied to the conventional method and molding device, not only is magnetic anisotropy insufficient, but the molded product becomes lump-like, making it impossible to obtain a sheet-like molded product.
すなわちフェライト系磁性粉末はその粉末粒結晶（男開
性）であるから剪断力により磁気異方性になりやすいが
、希土類磁性粉末の場合は粉末粒子が非板状（非！！ｎ
性）を右するために磁場と剪断応力とによるだけでは配
向が困難であり、しかも−日磁気的に配向したものが流
動性のある状態で成形型から押出されると配向が乱れた
り、出口で押出されたものが団子状になり成形型に吸着
されてシートを得ることが困難であり、成形型装置に何
らかの改良が要求される。In other words, since ferrite magnetic powder has powder grain crystals (androgens), it tends to become magnetically anisotropic due to shearing force, but in the case of rare earth magnetic powders, the powder particles have a non-plate shape (non-plate shape).
It is difficult to achieve orientation using only a magnetic field and shear stress in order to control the properties (original properties).Moreover, if a magnetically oriented material is extruded from a mold in a fluid state, the orientation may be disordered or The extruded material becomes lump-like and is adsorbed by the mold, making it difficult to obtain a sheet, and some improvement is required in the molding device.
（発明の目的）
本発明は斯る従来事情に鑑み、磁石材料が希土類磁性粉
末である場合でも、該粉末の異方化を可能かつ容易なら
しめて磁気異方性シートの品質を高める押出成形型装置
を提供することを目的とする。(Object of the Invention) In view of the conventional circumstances, the present invention provides an extrusion molding die that makes it possible and easy to anisotropicize the powder even when the magnet material is rare earth magnetic powder, thereby improving the quality of the magnetically anisotropic sheet. The purpose is to provide equipment.
（発明の構成）
斯る本発明の押出成形型装置は、成形型を磁性材料から
なる磁界用ブロックと非磁性材料からなる非磁界用ブロ
ックとにより形成し、かつ磁界用ブロックを非磁界用ブ
ロックの下流側に配置し、その磁界用ブロックの表裏両
面に磁場発生装置の磁極部材を取付番プるとともに該ブ
ロック内に加熱手段およびその下流側に配した冷却手段
を設けたことを特徴とする。(Structure of the Invention) The extrusion mold device of the present invention has a mold formed of a magnetic field block made of a magnetic material and a non-magnetic field block made of a non-magnetic material, and the magnetic field block is formed by a non-magnetic field block. The magnetic pole member of the magnetic field generator is mounted on both the front and back sides of the magnetic field block, and a heating means and a cooling means are provided in the block. .
（作用）
本発明によれば、加熱手段によって磁界用域における熱
可塑性樹脂又はエラストマーシート原料を流動状態に加
熱すると同時に磁場をかけ、その磁界用域における磁界
強度を高め、磁性粉末粒子の回転を容易にして異方化を
促進させる。(Function) According to the present invention, the heating means heats the thermoplastic resin or elastomer sheet raw material in the magnetic field area to a fluid state, and at the same time applies a magnetic field, increases the magnetic field strength in the magnetic field area, and causes the rotation of the magnetic powder particles. to facilitate anisotropy.
又、磁性粉末が異方化されたシート原料は磁界用域の下
流部において冷却手段により冷却され高粘度化又は・固
化されて配向状態のくずれを防止する。Further, the sheet raw material in which the magnetic powder is anisotropic is cooled by a cooling means downstream of the magnetic field area, and is made to have a high viscosity or is solidified to prevent the orientation state from deteriorating.
（実施例）
本発明の実施例を図面により説明すれば、第１図は押出
機を示し、（１）は加熱筒、（２）はスクリュー、（３
）はシート原料（ａ）を投入するホッパ、（１０）は成
形型装置であり、成形型装置ｆ（１０）の詳細を第２〜
５図に示す。(Example) An example of the present invention will be described with reference to the drawings. Fig. 1 shows an extruder, (1) a heating cylinder, (2) a screw, and (3) an extruder.
) is a hopper into which the sheet material (a) is fed, (10) is a molding device, and the details of the molding device f (10) are shown in 2-
It is shown in Figure 5.
成形型装置（１０）は前記加熱筒（１）に連設する成形
型（Ａ、）と磁場発生装’ａ （Ｂ）とにより構成され
る。The mold device (10) is composed of a mold (A,) and a magnetic field generator (B) that are connected to the heating cylinder (1).
成形型（Ａ＞は前記加熱９Ｉ（１）側の端面に流入口（
１１）を、他端面に出口（１２）を開口した所定形状の
押出路（ノズル孔）（ａ’ ）を形成してなり、この押
出路（ａ′）内を通して、溶融又は軟化せるシート原料
（ａ）を押出成形する。The mold (A> has an inlet (
11) is formed with an extrusion path (nozzle hole) (a') having a predetermined shape with an outlet (12) opened on the other end surface, and a sheet material (11) that can be melted or softened is passed through this extrusion path (a'). a) is extruded.
シート原料（ａ）は希土類磁性粉末を主体とし、これに
バインダーとして熱可塑性樹脂又はエラストマーを混合
した材料を用いる。The sheet raw material (a) is mainly composed of rare earth magnetic powder, and is mixed with a thermoplastic resin or an elastomer as a binder.
上記成形型（Ａ）は加熱筒（１）側（上流側）の−半部
を非磁界用ブロック（１３）とし、下流側の他半部を磁
界用７０ツク（１４）として両ブロック（１３）（１４
）を連結一体的に構成する。In the mold (A), the negative half of the heating cylinder (1) side (upstream side) is a block for non-magnetic field (13), and the other half of the downstream side is a block for magnetic field (14), and both blocks (13 )(14
) are connected and integrated.
非磁界用ブロック（１３）は非磁性材料、例えば５ｔｌ
Ｓ３０４． Ｂｅ−ム合金あるいは非磁性鉄鋼などに
より成形し、磁界用ブロック（１４）は磁性材料、例え
ば５１５Ｃ，５４５Ｃ，ＮＡＫ−５５，［鉄などにより
成型する。The non-magnetic field block (13) is made of non-magnetic material, for example 5tl.
S304. The magnetic field block (14) is molded from a magnetic material such as 515C, 545C, NAK-55, iron, etc.
上記ブロック（１３）（１４）は夫々上下分割型、すな
わち上ブロック（１３ａ）（１４ａ）、下ブロック（１
３ｂ）（１４ｂ）に分割して形成し、その各上下ブロッ
ク（１３ａ）（１３ｂ）、 （１４ａ）（１４ｂ）をボ
ルト（１５） 。The blocks (13) and (14) are of a vertically divided type, that is, the upper block (13a) (14a) and the lower block (1
3b) (14b), and connect the upper and lower blocks (13a), (13b), (14a) and (14b) with bolts (15).
（１６）によって締結してブロック（１３）（１４）を
形成するとともに両ブロック＜ １３）（１４）を溝嵌
合構造（１７）によって連結一体的とする。(16) to form blocks (13) and (14), and both blocks (13) and (14) are integrally connected by groove fitting structure (17).
磁界用ブロック（１４）をさらに詳述すれば、該ブロッ
ク（１４）は上下両ブロック（１４ａ）（１４ｂ）間に
押出Ｍ（ａ’）の側面を塞ぐスペーサー及びシール材な
どの介在物（１８）を用いるが、この介在物（１８）お
よび前記ボルト（１８）を非磁性材料により形成したも
のを用いる。To describe the magnetic field block (14) in more detail, the block (14) has an inclusion (18) such as a spacer and a sealing material that closes the side surface of the extrusion M (a') between the upper and lower blocks (14a) (14b). ), but the inclusion (18) and the bolt (18) are made of a non-magnetic material.
又、磁界用ブロック（１４）はその上下台ブロック（１
４ａ）（１４ｂ）の略中央部に切欠溝（１９）（１９’
）を形成するとともに該切欠溝の下流側にカートリッ
ジヒータなどの加熱手段（２０）（２０’ ）を埋設し
、下流側に水などの冷媒を流通させる冷却手段（２１）
（２１’ ）を設ける。In addition, the magnetic field block (14) is connected to its upper and lower base blocks (1
4a) (14b) have notched grooves (19) (19'
), and a heating means (20) (20') such as a cartridge heater is buried in the downstream side of the notch groove, and a cooling means (21) for circulating a refrigerant such as water on the downstream side.
(21') is provided.
加熱手段（２０）（２０’ ）はブロック（１４）内の
押出路（ａ）を通過するシート原料（ａ）の熱可塑性樹
脂又はエラストマー（バインダー）が流動し得る状Ｍ（
粘度１０６ボイジ以下）に保持する温度に設定し、冷却
部材（２１）（２１’ ）は出口において熱可塑性樹脂
又はエラストマーが凝固又は固化する温度に設定する。The heating means (20) (20') has a shape M (
The cooling member (21) (21') is set at a temperature at which the thermoplastic resin or elastomer solidifies or solidifies at the outlet.
切欠溝（１９）（１９’ ）はブロック（１４）におけ
る上流側と下流側との温度勾配を大きくするものであり
、断熱材を充填することもよい。The notched grooves (19) (19') increase the temperature gradient between the upstream side and the downstream side of the block (14), and may be filled with a heat insulating material.
尚、図中（２２）は非磁界用ブロック（１３）に巻装し
たバンドヒータである。Note that (22) in the figure is a band heater wrapped around the non-magnetic field block (13).
磁場発生装置（Ｂ）は磁界用ブロック（１４）の上下に
配設した２個のコイル（２３）（２３’ ） 。The magnetic field generator (B) consists of two coils (23) (23') arranged above and below a magnetic field block (14).
磁極（２４）（２４’ ）及び磁路形成用の磁性枠（ヨ
ーク）（２５）により構成する。It consists of magnetic poles (24) (24') and a magnetic frame (yoke) (25) for forming a magnetic path.
上記磁極（２４）（２４″）は上ブロック（１４ａ）の
上面と下ブロック（１４ｂ）の下面とに取付けて対峙さ
せ、両磁極（２４）（２４’ ）間に押出路（ａ′）を
直交状横断する磁路を発生せしめる。The magnetic poles (24) (24'') are attached to the upper surface of the upper block (14a) and the lower surface of the lower block (14b) so that they face each other, and an extrusion path (a') is formed between the magnetic poles (24) (24'). Generates a magnetic path that crosses orthogonally.
尚、磁場発生装置（Ｂ）はコイル（２３）（２３”）に
代えて永久磁石を用いることも任意である。Incidentally, the magnetic field generator (B) may optionally use a permanent magnet instead of the coils (23) (23'').
而して加熱筒（１）から成形型（Ａ）へ供給される溶融
シート原料（ａ）は非磁性ブロック（１３）の押出路（
ａ′）を通過する際に、その流路形状によって剪断応力
を受けて磁性粉末粒子の配向がはじまり、磁界用ブロッ
ク（１４）の押出路（ａ′）へ流入して加熱手段（２０
）（２０’ ）により溶融状態を保持したまま磁極（２
４）（２４’ ）により外部磁場を受け、磁性粉末粒子
の配向が促進されて異方化が完成し、押出路（ａ′）の
下流部を通過する際に冷却手段（２１）（２１’ ）に
よって熱可塑性樹脂又はエラストマーが凝固し出口（１
２）より押出される。The molten sheet raw material (a) supplied from the heating cylinder (1) to the mold (A) passes through the extrusion path (
a'), the magnetic powder particles begin to be oriented due to shear stress due to the flow path shape, flow into the extrusion path (a') of the magnetic field block (14), and heat the heating means (20).
) (20'), the magnetic pole (2
4) (24') receives an external magnetic field to promote the orientation of the magnetic powder particles to complete anisotropy, and when passing through the downstream part of the extrusion path (a'), cooling means (21) (21') ), the thermoplastic resin or elastomer solidifies and exits at the outlet (1
2) It is extruded.
上記成形型（Ａ）は磁界用ブロック（１４）を非磁界用
ブロック（１３）と材質的に区画しているので、外部磁
場の拡散が少なく磁界用ブロック（１４）内における異
方化のための磁界強度が大きい。とくに実施例のように
磁界用ブロック（１４）のボルト（１６）及び介在物（
１８）を非磁性材料とすることにより、ブロック（１４
）内における磁気的もれをさらに少なくし、より効率的
にシート原料（ａ）に磁場をかけることができる。In the mold (A), the magnetic field block (14) is separated from the non-magnetic field block (13) by material, so that the external magnetic field is less diffused and anisotropy occurs within the magnetic field block (14). The magnetic field strength is large. In particular, as in the example, the bolt (16) of the magnetic field block (14) and the inclusion (
By making the block (18) a non-magnetic material, the block (14)
) It is possible to further reduce magnetic leakage within the sheet material (a) and apply a magnetic field to the sheet material (a) more efficiently.
尚、実施例は希土類磁性粉末を用いたシート原料の場合
で説明したが、フェライト系磁性粉末にも適用し得るこ
とは当然である。Although the embodiments have been described in the case of a sheet material using rare earth magnetic powder, it is natural that the present invention can also be applied to ferrite magnetic powder.
又、上記実施例においては磁界用ブロック内の温度勾配
をとるために切欠溝（１９）（１９’ ）を設けたが、
本発明において切欠溝は必須要件ではなく省略すること
も可能であり、又切欠溝を設ける場合においてはその形
状（深さ、長さ）はシート原料、成形型の大きさに応じ
て任意に設定する。In addition, in the above embodiment, notched grooves (19) (19') were provided to take the temperature gradient inside the magnetic field block.
In the present invention, the notched groove is not an essential requirement and can be omitted, and when the notched groove is provided, its shape (depth, length) can be set arbitrarily depending on the sheet material and the size of the mold. do.
（効果）
本発明によれば、従来異方化が不可能又は困難であった
希土類磁性粉末を混合したシート原料であっても、磁界
用ブロック内における磁界強度の向上と粉末粒子の活性
化により異方化させるごとができるとともに異方化状態
をブロック内における冷却によって安定させ、品質の高
い磁気異方性シートを押出成形することができる。(Effects) According to the present invention, even with a sheet material mixed with rare earth magnetic powder, which has conventionally been impossible or difficult to anisotropic, it is possible to improve the magnetic field strength in the magnetic field block and activate the powder particles. The anisotropic state can be stabilized by cooling within the block, and a high quality magnetically anisotropic sheet can be extruded.
第１図は本発明装置を備えた押出機の一部切欠せる側面
図、第２図は本発明装置を拡大せる断面側面図、第３図
はその（Ｉ［［） −（Ｉ［［）線断面図、第４図は同
（ｒＶ） −（ｒＶ）線断面図、第５図は同（Ｖ）−（
Ｖ）線断面図である。
図中、（Ａ）は成形型、（Ｂ）は磁場発生装置、（１３
）は非磁界用ブロック、（１３ａ）はその上ブロック、
（１３ｂ）は下ブロック、（１４）は磁界用ブロック、
（１４ａ）はその上ブロック、（１４ｂ）は下ブロック
、（１５）（１６）はボルト、（１８）は介在物、（２
０）（２０’ ）は加熱手段、（２１）（２１’ ）は
冷却手段、（２４）（２４’ ）は磁極である。
Ｌ！−宜
第１図
第４図 第５図
手続補正書
昭和６１年１２月１２日
鴨
特許庁長官 黒 １）明 雄 殿
（特許庁審査官 殿）１、 事
件の表示
昭和６１年 特許間第２３２８９７号
２、発明の名称
磁気異方性シートの押出成形型装置
３、補正をする者
事件との関係 特許出願人氏名（名称）
信越化学工業株式会社４、代理人
昭和 年 月 日
＼？ノ ７
補 正 書
１．明細書第９頁の第１５行目と第１６行目との間に下
記の文章を加入補正する。
記
「更に、上記実施例においては磁極（財）、−を磁界用
ブロック０の外径よシも小径としであるが、第６図及び
第７図に示す如く、磁極（至）−の幅を磁界用ブロック
の幅と略同幅となして、磁界用ブロックの略全幅に渉っ
て磁路を発生させるようにするも勿論良いものである。
尚、第６図及び第７図における構成部材は前示実施例と
同じ部材であるため同一符号を（ｔｔＪ２、明細書第１
０頁の第１０行目を下記の如く補正する。
記
「５図は同Ｍ−（７）線断面図、第６図は他の変形例を
示す断面図、第７図は第６図の（２）−−線断面図であ
る。」
３、願書に添附する図面に第６図及び第７図を特徴とす
るFig. 1 is a partially cutaway side view of an extruder equipped with the device of the present invention, Fig. 2 is an enlarged sectional side view of the device of the present invention, and Fig. 3 is the (I[[) - (I[[) 4 is a cross-sectional view along the line (rV)-(rV), and FIG. 5 is a cross-sectional view along the line (V)-(
V) It is a line sectional view. In the figure, (A) is a mold, (B) is a magnetic field generator, (13
) is a non-magnetic field block, (13a) is an upper block,
(13b) is the lower block, (14) is the magnetic field block,
(14a) is the upper block, (14b) is the lower block, (15) and (16) are the bolts, (18) is the inclusion, (2
0) (20') are heating means, (21) (21') are cooling means, and (24) (24') are magnetic poles. L! - Figure 1 Figure 4 Figure 5 Procedural amendment December 12, 1988 Kamo Commissioner of the Patent Office Kuro 1) Mr. Akio (Examiner of the Patent Office) 1, Indication of the case 1985 Interpatent No. 232897 No. 2, Name of the invention Extrusion mold device for magnetically anisotropic sheet 3, Relationship with the person making the amendment Name of the patent applicant (name)
Shin-Etsu Chemical Co., Ltd. 4, Agent Showa Year Month Day\? No. 7 Amendment 1. The following sentence is added between lines 15 and 16 on page 9 of the specification. Furthermore, in the above embodiment, the magnetic pole (-) has a smaller diameter than the outer diameter of the magnetic field block 0, but as shown in FIGS. 6 and 7, the width of the magnetic pole (-) Of course, it is also good to make the width of the magnetic field block substantially the same as that of the magnetic field block, so that the magnetic path is generated over substantially the entire width of the magnetic field block. Since the members are the same as those in the previous embodiment, the same reference numerals are used (ttJ2, Specification No. 1).
Correct the 10th line of page 0 as follows. ``Figure 5 is a cross-sectional view taken along the line M-(7), Figure 6 is a cross-sectional view showing another modification, and Figure 7 is a cross-sectional view taken along the line (2) in Figure 6.'' 3. Figures 6 and 7 are featured in the drawings attached to the application.
Claims (2)
性材料からなる非磁界用ブロックとにより形成し、かつ
磁界用ブロックを非磁界用ブロックの下流側に配置し、
その磁界用ブロックの表裏両面に磁場発生装置の磁極部
材を取付けるとともに該ブロック内に加熱手段およびそ
の下流側に配した冷却手段を設けた磁気異方性シートの
押出成形型装置。(1) A mold is formed of a magnetic field block made of a magnetic material and a non-magnetic field block made of a non-magnetic material, and the magnetic field block is arranged downstream of the non-magnetic field block,
An extrusion mold device for a magnetic anisotropic sheet, in which magnetic pole members of a magnetic field generating device are attached to both the front and back sides of the magnetic field block, and a heating means and a cooling means arranged downstream of the block are provided.
から構成され、その上下両ブロック間に非磁性材料の介
在物を配置するとともに、非磁性材料の締結部材で固定
してなる特許請求の範囲第１項記載の磁気異方性シート
の押出成形型装置。(2) A claim in which the magnetic field block is composed of an upper block and a lower block, and an inclusion made of a non-magnetic material is arranged between the upper and lower blocks, and is fixed with a fastening member made of a non-magnetic material. 2. An extrusion mold device for a magnetically anisotropic sheet according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23289786A JPS6387717A (en) | 1986-09-30 | 1986-09-30 | Magnetic anisotropic sheet extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23289786A JPS6387717A (en) | 1986-09-30 | 1986-09-30 | Magnetic anisotropic sheet extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6387717A true JPS6387717A (en) | 1988-04-19 |
Family
ID=16946551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23289786A Pending JPS6387717A (en) | 1986-09-30 | 1986-09-30 | Magnetic anisotropic sheet extruder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6387717A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63148608A (en) * | 1986-12-11 | 1988-06-21 | Shin Etsu Chem Co Ltd | Extrusion molding die device for magnetic anisotropic sheet |
| US5099050A (en) * | 1991-04-15 | 1992-03-24 | Ethyl Corporation | Preparation of aluminoxanes |
-
1986
- 1986-09-30 JP JP23289786A patent/JPS6387717A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63148608A (en) * | 1986-12-11 | 1988-06-21 | Shin Etsu Chem Co Ltd | Extrusion molding die device for magnetic anisotropic sheet |
| US5099050A (en) * | 1991-04-15 | 1992-03-24 | Ethyl Corporation | Preparation of aluminoxanes |
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