JPH1080930A - Manufacture of composite magnetic sheet - Google Patents
Manufacture of composite magnetic sheetInfo
- Publication number
- JPH1080930A JPH1080930A JP23799696A JP23799696A JPH1080930A JP H1080930 A JPH1080930 A JP H1080930A JP 23799696 A JP23799696 A JP 23799696A JP 23799696 A JP23799696 A JP 23799696A JP H1080930 A JPH1080930 A JP H1080930A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic sheet
- composite magnetic
- sheet
- mixture
- rolling
- 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.)
- Withdrawn
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、軟磁性体粉末を有
機結合剤中に混合してなる複合磁性シートの製造方法に
関し、特に、電磁干渉抑制体に用いられる複合磁性シー
トの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a composite magnetic sheet obtained by mixing a soft magnetic powder in an organic binder, and more particularly to a method for producing a composite magnetic sheet used for an electromagnetic interference suppressor.
【０００２】[0002]
【従来の技術】この種の電磁干渉抑制体は、不要電磁波
の干渉によって生じる電磁波障害を抑制するために使用
される。電磁干渉抑制体は、軟磁性体粉末を有機結合剤
中に混合してなる複合磁性シートと導電性シートとを積
層した構造を有している。このような電磁干渉抑制体
は、それに到来した電磁波を複合磁性シートで吸収し、
複合磁性シートを通過した電磁波を導電性シートで複合
磁性シートに反射することによって不要電磁波の干渉を
抑制する。従って、電磁干渉抑制体は、例えば、各々が
電子部品を実装しかつ互いに離隔して対向して配置され
た２枚のプリント配線基板の間に配置して使用される。2. Description of the Related Art This type of electromagnetic interference suppressor is used to suppress electromagnetic interference caused by unnecessary electromagnetic interference. The electromagnetic interference suppressor has a structure in which a composite magnetic sheet obtained by mixing a soft magnetic powder in an organic binder and a conductive sheet are laminated. Such an electromagnetic interference suppressor absorbs electromagnetic waves arriving at it with a composite magnetic sheet,
Electromagnetic waves that have passed through the composite magnetic sheet are reflected by the conductive sheet onto the composite magnetic sheet, thereby suppressing interference of unnecessary electromagnetic waves. Accordingly, the electromagnetic interference suppressor is used, for example, between two printed wiring boards, each of which mounts an electronic component and is spaced apart and opposed to each other.
【０００３】従来、このような複合磁性シートは、軟磁
性体粉末と有機結合剤との混練物を熱プレスすることに
より製造されていた。Hitherto, such a composite magnetic sheet has been manufactured by hot pressing a kneaded product of a soft magnetic powder and an organic binder.
【０００４】[0004]
【発明が解決しようとする課題】このように、従来は、
熱プレスによるバッチ処理により複合磁性シートを製造
していたので、複合磁性シートを大量製造するのに不向
きであるという欠点がある。As described above, conventionally,
Since the composite magnetic sheet has been manufactured by a batch process using a hot press, there is a disadvantage that it is not suitable for mass-producing the composite magnetic sheet.
【０００５】また、熱プレスによって複合磁性シートを
製造すると、複合磁性シート中へのエアの混入が避けら
れず、複合磁性シートの歩留りが悪いという欠点があ
る。Further, when a composite magnetic sheet is manufactured by hot pressing, there is a disadvantage that air is unavoidably mixed into the composite magnetic sheet and the yield of the composite magnetic sheet is poor.
【０００６】それ故、本発明の課題は、大量製造に適し
た複合磁性シートの製造方法を提供することにある。Therefore, an object of the present invention is to provide a method for producing a composite magnetic sheet suitable for mass production.
【０００７】本発明のもう一つの課題は、エアの混入が
少ない高品質の複合磁性シートを得ることができる複合
磁性シートの製造方法を提供することにある。Another object of the present invention is to provide a method of manufacturing a composite magnetic sheet capable of obtaining a high-quality composite magnetic sheet with less air mixing.
【０００８】[0008]
【課題を解決するための手段】本発明によれば、複合磁
性シートを製造する方法において、軟磁性体粉末と有機
結合剤との微粉化混練物を用意する工程と、前記微粉化
混練物を、互に対向する２つのロールにて圧延し、前記
複合磁性シートを得る工程とを有することを特徴とする
複合磁性シートの製造方法が得られる。According to the present invention, there is provided a method for producing a composite magnetic sheet, comprising the steps of: preparing a finely kneaded mixture of a soft magnetic powder and an organic binder; Rolling by two rolls facing each other to obtain the composite magnetic sheet.
【０００９】更に本発明によれば、所定の厚さの複合磁
性シートを製造する方法において、前記厚さよりも小さ
い粒径を有する、軟磁性体粉末と有機結合剤との微粉化
混練物を用意する工程と、前記微粉化混練物を、互に対
向する２つのロールにて圧延し、前記複合磁性シートを
得るロール圧延工程とを有することを特徴とする複合磁
性シートの製造方法が得られる。According to the present invention, there is further provided a method for producing a composite magnetic sheet having a predetermined thickness, wherein a finely-kneaded mixture of a soft magnetic powder and an organic binder having a particle size smaller than the thickness is prepared. And a roll rolling step of rolling the pulverized and kneaded material with two rolls facing each other to obtain the composite magnetic sheet, thereby obtaining a composite magnetic sheet manufacturing method.
【００１０】また本発明によれば、前記ロール圧延工程
は、前記微粉化混練物を、互に、前記厚さに実質的に等
しい距離を置いて対向する２つのロールにて圧延し、前
記複合磁性シートを得る工程であることを特徴とする複
合磁性シートの製造方法が得られる。According to the present invention, in the roll rolling step, the pulverized kneaded material is rolled on two rolls facing each other at a distance substantially equal to the thickness, and A method for producing a composite magnetic sheet, which is a step of obtaining a magnetic sheet, is obtained.
【００１１】[0011]
【発明の実施の形態】次に本発明の実施の形態について
図面を参照して説明する。Embodiments of the present invention will now be described with reference to the drawings.
【００１２】図１を参照すると、本発明の一実施形態に
よる複合磁性シートの製造方法では、軟磁性体粉末と有
機結合剤との混練物を、粉砕したり、分級することによ
り、軟磁性体粉末と有機結合剤との微粉化混練物１０を
まず用意する。軟磁性体粉末としては、好ましくは、扁
平状に加工された軟磁性体粉末が用いられる。有機結合
剤は、例えば、塩素化ポリエチレン等のエラストマであ
る。Referring to FIG. 1, in a method for manufacturing a composite magnetic sheet according to an embodiment of the present invention, a kneaded product of a soft magnetic powder and an organic binder is pulverized or classified to obtain a soft magnetic material. First, a micronized kneaded material 10 of a powder and an organic binder is prepared. As the soft magnetic powder, a soft magnetic powder processed into a flat shape is preferably used. The organic binder is, for example, an elastomer such as chlorinated polyethylene.
【００１３】次に、微粉化混練物１０を、互に対向する
２つの圧延ロール１１にて圧延し、複合磁性シート１２
を得る。Next, the pulverized kneaded material 10 is rolled by two rolling rolls 11 facing each other to form a composite magnetic sheet 12.
Get.
【００１４】この複合磁性シート１２は、例えば、使用
時等の所望時に所定の形状の複合磁性片に切断される。The composite magnetic sheet 12 is cut into a composite magnetic piece having a predetermined shape when desired, for example, during use.
【００１５】好ましくは、微粉化混練物１０として、製
造すべき複合磁性シート１２の厚さよりも小さい粒径を
有する混練物が使用され、これら微粉化混練物１０を、
互に、製造すべき複合磁性シート１２の厚さに実質的に
等しい距離を置いて対向する２つの圧延ロール１１にて
圧延し、複合磁性シート１２を得る。Preferably, a kneaded material having a particle size smaller than the thickness of the composite magnetic sheet 12 to be produced is used as the finely kneaded material 10.
The composite magnetic sheets 12 are rolled by two opposing rolling rolls 11 at a distance substantially equal to the thickness of the composite magnetic sheet 12 to be manufactured, and the composite magnetic sheet 12 is obtained.
【００１６】このように、ロール圧延処理の前の微粉化
混練物１０の粒径を小さくすることによって、複合磁性
シート１２中へのエアの混入がほとんどなく、高品質の
複合磁性シートを得ることができる。As described above, by reducing the particle size of the pulverized kneaded material 10 before the roll rolling process, air is hardly mixed into the composite magnetic sheet 12 and a high-quality composite magnetic sheet can be obtained. Can be.
【００１７】また、微粉化混練物１０を、２つの圧延ロ
ール１１でロール圧延処理することによって、２つの圧
延ロール１１間でのロール圧延処理中に、扁平状の軟磁
性体粉末を含む微粉化混練物１０を、扁平状の軟磁性体
粉末が複合磁性シート１２の表面に平行となるように、
配向させることができ、反磁界による透過率特性の劣化
を防止でき、この点においても複合磁性シート１２は高
品質となる。Further, the pulverized kneaded material 10 is roll-rolled by the two rolling rolls 11, so that the pulverized mixture containing the flat soft magnetic material powder is formed during the rolling between the two rolling rolls 11. The kneaded material 10 is adjusted such that the flat soft magnetic material powder is parallel to the surface of the composite magnetic sheet 12.
The composite magnetic sheet 12 can be oriented so that the transmittance characteristics can be prevented from deteriorating due to the demagnetizing field.
【００１８】なお、有機結合剤は、ポリエステル系樹
脂、ポリ塩化ビニル系樹脂、ポリビニルブチラール樹
脂、ポリウレタン樹脂、セルロール系樹脂、ニトリル−
ブタジエン系ゴム、スチレン−ブタジエン系ゴム等の熱
可塑性樹脂あるいはそれらの重合体、エポキシ樹脂、フ
ェノール樹脂、アミド系樹脂、イミド系樹脂等の熱硬化
性樹脂等であっても良い。The organic binder is a polyester resin, a polyvinyl chloride resin, a polyvinyl butyral resin, a polyurethane resin, a cellulose resin, a nitrile resin.
Thermoplastic resins such as butadiene rubbers and styrene-butadiene rubbers, or polymers thereof, and thermosetting resins such as epoxy resins, phenol resins, amide resins, and imide resins may be used.
【００１９】[0019]
【発明の効果】以上説明したように本発明によれば、軟
磁性体粉末と有機結合剤との微粉化混練物を、互に対向
する２つのロールにて圧延し、複合磁性シートを得るこ
とにより、大量製造に適した複合磁性シートの製造方法
が得られる。As described above, according to the present invention, a finely kneaded mixture of a soft magnetic powder and an organic binder is rolled by two rolls facing each other to obtain a composite magnetic sheet. Thereby, a method for producing a composite magnetic sheet suitable for mass production can be obtained.
【００２０】更に本発明によれば、ロール圧延処理の前
の微粉化混練物の粒径を小さくすることによって、製造
される複合磁性シート中へのエアの混入がほとんどな
く、高品質の複合磁性シートを得ることができる。Further, according to the present invention, by reducing the particle size of the pulverized kneaded material before the roll rolling treatment, air is hardly mixed into the composite magnetic sheet to be produced, and a high-quality composite magnetic sheet is obtained. You can get a sheet.
【図１】本発明の一実施形態による複合磁性シートの製
造方法を説明するための図である。FIG. 1 is a diagram for explaining a method of manufacturing a composite magnetic sheet according to one embodiment of the present invention.
１０ 微粉化混練物 １１ 圧延ロール １２ 複合磁性シート DESCRIPTION OF SYMBOLS 10 Micronized kneaded material 11 Rolling roll 12 Composite magnetic sheet
Claims (3)
て、 軟磁性体粉末と有機結合剤との微粉化混練物を用意する
工程と、 前記微粉化混練物を、互に対向する２つのロールにて圧
延し、前記複合磁性シートを得る工程とを有することを
特徴とする複合磁性シートの製造方法。1. A method for producing a composite magnetic sheet, comprising: a step of preparing a kneaded mixture of a soft magnetic substance powder and an organic binder; and the step of preparing the kneaded mixture by two rolls facing each other. Rolling the composite magnetic sheet to obtain the composite magnetic sheet.
方法において、 前記厚さよりも小さい粒径を有する、軟磁性体粉末と有
機結合剤との微粉化混練物を用意する工程と、 前記微粉化混練物を、互に対向する２つのロールにて圧
延し、前記複合磁性シートを得るロール圧延工程とを有
することを特徴とする複合磁性シートの製造方法。2. A method for producing a composite magnetic sheet having a predetermined thickness, comprising the steps of: providing a finely kneaded mixture of a soft magnetic material powder and an organic binder having a particle size smaller than the thickness; A roll rolling step of rolling the pulverized kneaded material with two rolls facing each other to obtain the composite magnetic sheet.
物を、互に、前記厚さに実質的に等しい距離を置いて対
向する２つのロールにて圧延し、前記複合磁性シートを
得る工程であることを特徴とする請求項２に記載の複合
磁性シートの製造方法。3. The roll rolling step is a step of rolling the pulverized kneaded material with two rolls facing each other at a distance substantially equal to the thickness to obtain the composite magnetic sheet. The method for producing a composite magnetic sheet according to claim 2, wherein:
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23799696A JPH1080930A (en) | 1996-09-09 | 1996-09-09 | Manufacture of composite magnetic sheet |
| KR1019980703164A KR20000064304A (en) | 1996-09-03 | 1997-09-02 | Manufacturing method of composite magnetic sheet |
| US09/068,144 US6187120B1 (en) | 1996-09-03 | 1997-09-02 | Method of manufacturing composite magnetic sheet |
| EP97937877A EP0873839B1 (en) | 1996-09-03 | 1997-09-02 | Method of manufacturing composite magnetic sheet |
| PCT/JP1997/003068 WO1998009788A1 (en) | 1996-09-03 | 1997-09-02 | Method of manufacturing composite magnetic sheet |
| CN97191127A CN1082871C (en) | 1996-09-03 | 1997-09-02 | Method of mfg. composite magnetic sheet |
| KR19987003164A KR100475768B1 (en) | 1996-09-03 | 1997-09-02 | Method of manufacturing compsite magnetic sheet |
| DE69731727T DE69731727T2 (en) | 1996-09-03 | 1997-09-02 | METHOD FOR MANUFACTURING MAGNETIC COMPOSITE FILM |
| TW086112675A TW363307B (en) | 1996-09-03 | 1997-09-03 | The manufacturing method of composite magnetic sheets |
| US09/613,330 US6740289B1 (en) | 1996-09-03 | 2000-06-16 | Method of producing a composite magnetic sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23799696A JPH1080930A (en) | 1996-09-09 | 1996-09-09 | Manufacture of composite magnetic sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1080930A true JPH1080930A (en) | 1998-03-31 |
Family
ID=17023583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23799696A Withdrawn JPH1080930A (en) | 1996-09-03 | 1996-09-09 | Manufacture of composite magnetic sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1080930A (en) |
-
1996
- 1996-09-09 JP JP23799696A patent/JPH1080930A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20051214 |
|
| A761 | Written withdrawal of application |
Effective date: 20060110 Free format text: JAPANESE INTERMEDIATE CODE: A761 |