JP2000294439A - Manufacture of resin-bonded magnet - Google Patents
Manufacture of resin-bonded magnetInfo
- Publication number
- JP2000294439A JP2000294439A JP11097518A JP9751899A JP2000294439A JP 2000294439 A JP2000294439 A JP 2000294439A JP 11097518 A JP11097518 A JP 11097518A JP 9751899 A JP9751899 A JP 9751899A JP 2000294439 A JP2000294439 A JP 2000294439A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- molding
- magnetic powder
- bonded magnet
- thermoplastic 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地球環境に配慮し
た樹脂結合型磁石に係り、特に使用後に廃棄した場合、
自然分解するまたは焼却時にダイオキシンが発生しない
樹脂結合型磁石の成形に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin-bonded magnet that considers the global environment,
The present invention relates to molding of a resin-bonded magnet that does not decompose spontaneously or does not generate dioxin when incinerated.
【０００２】[0002]
【従来の技術】樹脂結合型磁石は、熱可塑性樹脂剤に磁
性粉を混入し、加熱軟化して成形するため柔軟性があり
加工性に富んだ磁石として有効性を有している。2. Description of the Related Art Resin-bonded magnets are effective as magnets which are flexible and have good workability because magnetic powder is mixed into a thermoplastic resin material and heat-softened for molding.
【０００３】また、樹脂結合型磁石の利用範囲は、家庭
では冷蔵庫や洗濯機などのスチール面、会社ではホワイ
トボードやスチール製のロッカー、机、壁面などの磁性
体面に対して、マグネットボタンやマグネットバーなど
の磁石製品として、または自動車の初心者マークやモー
ター用マグネットとして一般的に広範囲に利用されてい
る。[0003] The range of use of the resin-bonded magnet is as follows: at home, a steel surface such as a refrigerator or a washing machine; and at a company, a magnetic button or magnet is used for a magnetic surface such as a whiteboard or a steel locker, a desk, or a wall surface. It is generally widely used as a magnet product such as a bar, or as a beginner's mark of a car or a magnet for a motor.
【０００４】[0004]
【発明が解決しようとする課題】このように会社や家庭
など私たちの生活の中で磁性体面であれば自由に貼った
り剥がしたりできる便利な樹脂結合型磁石製品も、その
利用が済めば廃棄しなければならず、焼却によるダイオ
キシン問題が大きな社会現象になっている。As described above, a convenient resin-bonded magnet product that can be freely attached and detached on a magnetic surface in our daily lives such as a company or a home is discarded once its use is completed. The dioxin problem caused by incineration has become a major social phenomenon.
【０００５】そこで本発明は、マグネットとしての利用
が済んだあとの廃棄について、そのまま廃棄しても自然
分解する、または焼却しても塩素が入っていないためダ
イオキシンが発生しない樹脂結合型磁石を製造すること
を目的とする。Accordingly, the present invention provides a resin-bonded magnet which does not generate dioxin because it does not decompose spontaneously when discarded as it is after being used as a magnet, or does not contain chlorine even when incinerated. The purpose is to do.
【０００６】[0006]
【課題を解決するための手段】前述の目的を達成するた
め、本発明の樹脂結合型磁石の製造方法は、熱可塑性樹
脂として生分解性プラスチックや塩素を含まないノンハ
ロゲン系樹脂を結合剤として磁性粉に混入し、これを加
熱軟化して押出成形・射出成形・カレンダー成形若しく
は圧縮成形および高圧成形により成形し、着磁すること
で樹脂結合型磁石となることを特徴とするものである。In order to achieve the above-mentioned object, a method for producing a resin-bonded magnet according to the present invention is characterized in that a biodegradable plastic or a non-halogen resin containing no chlorine is used as a thermoplastic resin. It is characterized in that it is mixed with powder, heat-softened, molded by extrusion molding, injection molding, calender molding or compression molding and high-pressure molding, and magnetized to form a resin-bonded magnet.
【０００７】また、磁性粉に混入する熱可塑性樹脂は、
成形性をよくするため生分解性プラスチックと塩素を含
まないノンハロゲン系樹脂を適宜混合し、結合剤として
使用してもよい。The thermoplastic resin mixed into the magnetic powder is
In order to improve the moldability, a biodegradable plastic and a non-halogen resin containing no chlorine may be appropriately mixed and used as a binder.
【０００８】また、熱可塑性樹脂と混入する磁性粉は、
磁力の強弱によりフェライト磁性粉やサマリウム（Ｓ
ｍ）・ネオジウム（Ｎｄ）・セリウム（Ｃｅ）・プラセ
ジウム（Ｐｒ）などの希土類元素を含む合成磁性粉を適
宜混合し、使用目的により磁力の単位であるＢ・Ｈｍａ
ｘを０．２からその配合割合により段階的に強磁性体に
する樹脂結合型磁石を成形してもよい。The magnetic powder mixed with the thermoplastic resin is:
Ferrite magnetic powder or samarium (S
m) A synthetic magnetic powder containing a rare earth element such as neodymium (Nd), cerium (Ce), or prasedium (Pr) is appropriately mixed, and B · Hma, which is a unit of magnetic force, depending on the purpose of use.
A resin-coupled magnet may be formed into a ferromagnetic material in a stepwise manner depending on the mixing ratio of x from 0.2.
【０００９】[0009]
【発明の実施形態】本発明の樹脂結合型磁石は、環境問
題に対応した熱可塑性樹脂として生分解性プラスチック
や塩素を含まないノンハロゲン系樹脂またはこれらを混
合した熱可塑性樹脂を結合剤として磁性粉に混入する。BEST MODE FOR CARRYING OUT THE INVENTION The resin-bonded magnet of the present invention uses a biodegradable plastic, a chlorine-free non-halogen resin or a thermoplastic resin obtained by mixing these as a binder as a thermoplastic resin as a thermoplastic resin corresponding to environmental problems. Mixed in.
【００１０】この熱可塑性樹脂と磁性粉の混入比は、少
なくとも結合剤である熱可塑性樹脂が樹脂結合型磁石を
成形する段階で、磁力の単位であるＢ・Ｈｍａｘ０．２
以上を保持するため、総重量の４５％以下とする。The mixing ratio of the thermoplastic resin and the magnetic powder is determined at least when the thermoplastic resin as a binder is used to form a resin-bonded magnet at the stage of molding B.Hmax 0.2 which is a unit of magnetic force.
In order to maintain the above, it is set to 45% or less of the total weight.
【００１１】この磁性粉に混入する熱可塑性樹脂である
生分解性プラスチックは、天然物利用系生分解性プラス
チックであるでんぷんやセルロースおよびキチン・キト
サン・海産多糖類などの天然高分子、微生物産生系生分
解性プラスチックであるバイオポリエステル・カードラ
ン・プルラン・バクテリアセルロース・ポリアミノ酸な
どの高分子、化学合成系生分解性プラスチックである脂
肪族ポリエステルおよび共重合体・ポリウレタン樹脂・
ポリアミド系樹脂・ポリビニルアルコール・ポリエテー
ルなどの合成高分子、およびこれらの天然物利用系・微
生物産生系・化学合成系を複合した合成高分子、または
光分解性プラスチックがある。The biodegradable plastic, which is a thermoplastic resin mixed into the magnetic powder, is a natural product-based biodegradable plastic such as starch and cellulose, natural polymers such as chitin, chitosan, and marine polysaccharides, and microorganism-producing plastics. Biodegradable plastics such as biopolyesters, curdlan, pullulan, bacterial cellulose, polyamino acids, etc., and chemically synthesized biodegradable plastics such as aliphatic polyesters and copolymers, polyurethane resins,
There are synthetic polymers such as polyamide resin, polyvinyl alcohol, and polyether, and synthetic polymers or photodegradable plastics that combine these natural product utilization systems, microbial production systems, and chemical synthesis systems.
【００１２】また、この磁性粉に混入する熱可塑性樹脂
である塩素を含まないノンハロゲン系樹脂は、ポリオレ
フィン系樹脂・ポリアミド系樹脂・ポリエステル系樹脂
・スチレン系樹脂・ウレタン系樹脂などの合成樹脂およ
びこれらを共重合した合成樹脂がある。Further, chlorine-free non-halogen resin which is a thermoplastic resin mixed into the magnetic powder includes synthetic resins such as polyolefin resin, polyamide resin, polyester resin, styrene resin, urethane resin and the like. There is a synthetic resin obtained by copolymerizing
【００１３】また、磁性粉末としてフェライト磁性粉や
サマリウム（Ｓｍ）・ネオジウム（Ｎｄ）・セリウム
（Ｃｅ）・プラセジウム（Ｐｒ）などの希土類元素を含
む合金磁性粉およびこれらの磁性粉を混合した磁性粉が
ある。Further, as magnetic powder, ferrite magnetic powder, alloy magnetic powder containing a rare earth element such as samarium (Sm), neodymium (Nd), cerium (Ce), prasedium (Pr), and magnetic powder obtained by mixing these magnetic powders There is.
【００１４】この磁性粉を使用目的により磁力の単位で
あるＢ・Ｈｍａｘ０．２からその配合割合により段階的
に強磁性体にすることができるものである。The magnetic powder can be made into a ferromagnetic material stepwise from B.Hmax 0.2, which is a unit of magnetic force, depending on the purpose of use, depending on the mixing ratio.
【００１５】これらの熱可塑性樹脂と磁性粉を混入させ
加熱軟化して押出成形・射出成形・カレンダー成形若し
くは圧縮成形および高圧成形により樹脂結合型磁石を成
形するものである。The thermoplastic resin and the magnetic powder are mixed, heated and softened, and a resin-bonded magnet is formed by extrusion molding, injection molding, calender molding or compression molding, and high-pressure molding.
【００１６】そして、この成形される樹脂結合型磁石
は、地球環境に配慮したものであり、使用後廃棄した場
合、自然分解するまたは焼却時にダイオキシンが発生し
ない樹脂結合型磁石ができるものである。The molded resin-bonded magnet is made in consideration of the global environment, and when discarded after use, a resin-bonded magnet that does not decompose spontaneously or does not generate dioxin when incinerated can be obtained.
【００１７】[0017]
【発明の効果】以上詳述の如く、本発明の樹脂結合型磁
石の製造方法によれば、通常使用する場合は、磁性体面
に自由に貼ったり剥がしたりする樹脂結合型磁石がで
き、かつ使用後に廃棄した場合も自然分解するまたは焼
却してもダイオキシンが発生しない環境に配慮した極め
て有効的なものである。As described in detail above, according to the method of manufacturing a resin-bonded magnet of the present invention, a resin-bonded magnet that can be freely attached to and detached from a magnetic material surface when used normally can be formed and used. It is extremely effective in consideration of the environment where dioxin is not generated even if it is later disposed of by natural decomposition or incineration.
【００１８】また、熱可塑性樹脂に混入する磁性粉末と
してフェライト磁性粉やサマリウム（Ｓｍ）・ネオジウ
ム（Ｎｄ）・セリウム（Ｃｅ）・プラセジウム（Ｐｒ）
などの希土類元素を含む合金磁性粉を混合することで、
使用目的により磁力の単位であるＢ・Ｈｍａｘ０．２か
らその配合割合により段階的に強磁性体にすることがで
きるものである。Ferrite magnetic powder, samarium (Sm), neodymium (Nd), cerium (Ce), prasedium (Pr) may be used as a magnetic powder mixed with the thermoplastic resin.
By mixing alloy magnetic powder containing rare earth elements such as
Depending on the purpose of use, the ferromagnetic material can be made into a ferromagnetic material stepwise from B.Hmax 0.2, which is the unit of magnetic force, according to its blending ratio.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０１Ｆ 1/117 Ｈ０１Ｆ 1/117 // Ｂ２９Ｋ 1:00 25:00 27:00 29:00 67:00 75:00 77:00 Ｂ２９Ｌ 7:00 Ｆターム(参考） 4F213 AA01 AA13 AA14 AA18 AA19 AA24 AA29 AA31 AA32 AB16 AC01 AC04 AD02 AD05 AE04 AG01 AG02 AH81 WA01 WA04 WA05 WA06 WA41 WB01 WF21 4J002 AB011 AB041 AB051 AD011 BB011 BC021 BE021 CF001 CF031 CF191 CH021 CK021 CL001 DA116 DC006 5E040 AA03 AA06 AA19 AB03 BB04 CA01 HB05 HB07 HB15 NN04 5E062 CD02 CD05 CE02 CE03 CE04 CE05 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme court ゛ (Reference) H01F 1/117 H01F 1/117 // B29K 1:00 25:00 27:00 29:00 67:00 75 : 00 77:00 B29L 7:00 F term (reference) 4F213 AA01 AA13 AA14 AA18 AA19 AA24 AA29 AA31 AA32 AB16 AC01 AC04 AD02 AD05 AE04 AG01 AG02 AH81 WA01 WA04 WA05 WA06 WA41 WB01 WF21 4J002 AB011 AB041 BE051 CF01 BC01 CF191 CH021 CK021 CL001 DA116 DC006 5E040 AA03 AA06 AA19 AB03 BB04 CA01 HB05 HB07 HB15 NN04 5E062 CD02 CD05 CE02 CE03 CE04 CE05
Claims (7)
解性プラスチックを結合剤として使用し、磁性粉末に混
入したものを加熱軟化して押出成形・射出成形・カレン
ダー成形・圧縮成形・高圧成形により成形し、着磁する
ことを特徴とする樹脂結合型磁石の製造方法。1. A biodegradable plastic which decomposes naturally as a thermoplastic resin is used as a binder, and the mixture mixed with a magnetic powder is heated and softened and molded by extrusion molding, injection molding, calender molding, compression molding, and high pressure molding. And magnetizing the resin-bonded magnet.
ンハロゲン系樹脂を結合剤として使用し、磁性粉末に混
入したものを加熱軟化して押出成形・射出成形・カレン
ダー成形・圧縮成形・高圧成形により成形し、着磁する
ことを特徴とする樹脂結合型磁石の製造方法。2. A non-halogen resin containing no chlorine as a thermoplastic resin is used as a binder, and the mixture mixed with the magnetic powder is heat-softened and molded by extrusion molding, injection molding, calender molding, compression molding, and high-pressure molding. And magnetizing the resin-bonded magnet.
解性プラスチックと塩素を含まないノンハロゲン系樹脂
とを混合し結合剤として使用し、磁性粉末に混入したも
のを加熱軟化して押出成形・射出成形・カレンダー成形
・圧縮成形・高圧成形により成形し、着磁することを特
徴とする樹脂結合型磁石の製造方法。3. Extrusion molding / injection molding by mixing a biodegradable plastic which naturally decomposes as a thermoplastic resin and a non-halogen resin containing no chlorine and using it as a binder, and heating and softening the mixture mixed in the magnetic powder. -A method of manufacturing a resin-bonded magnet, which is formed by calendering, compression molding, and high-pressure molding and magnetized.
系生分解性プラスチックであるでんぷんやセルロースお
よびキチン・キトサン・海産多糖類などの天然高分子、
微生物産生系生分解性プラスチックであるバイオポリエ
ステル・カードラン・プルラン・バクテリアセルロース
・ポリアミノ酸などの高分子、化学合成系生分解性プラ
スチックである脂肪族ポリエステルおよび共重合体・ポ
リウレタン樹脂・ポリアミド系樹脂・ポリビニルアルコ
ール・ポリエテールなどの合成高分子、およびこれらの
天然物利用系・微生物産生系・化学合成系を複合した合
成高分子、または光分解性プラスチックを使用すること
を特徴とする請求項１および３記載の製造方法。4. A biodegradable plastic is a natural biodegradable plastic, such as starch or cellulose, and natural polymers such as chitin, chitosan, and marine polysaccharides.
Polymers such as biopolyester, curdlan, pullulan, bacterial cellulose, and polyamino acids, which are microbial biodegradable plastics; aliphatic polyesters and copolymers, polyurethane resins, and polyamide resins, which are biosynthetic plastics that are chemically synthesized 2. A synthetic polymer, such as polyvinyl alcohol or polyether, or a synthetic polymer obtained by combining these natural products, a microorganism producing system, or a chemically synthesized system, or a photo-degradable plastic. 3. The production method according to 3.
いノンハロゲン系樹脂は、ポリオレフィン系樹脂・ポリ
アミド系樹脂・ポリエステル系樹脂・スチレン系樹脂・
ウレタン系樹脂などの合成樹脂およびこれらを共重合し
た合成樹脂を使用することを特徴とする請求項２および
３記載の製造方法。5. The non-halogen resin containing no chlorine as the thermoplastic synthetic resin is a polyolefin resin, a polyamide resin, a polyester resin, a styrene resin, or the like.
4. The method according to claim 2, wherein a synthetic resin such as a urethane resin and a synthetic resin obtained by copolymerizing the synthetic resin are used.
マリウム（Ｓｍ）・ネオジウム（Ｎｄ）・セリウム（Ｃ
ｅ）・プラセジウム（Ｐｒ）などの希土類元素を含む合
金磁性粉およびこれらの磁性粉を混合した磁性粉を使用
することを特徴とする請求項１から３記載の製造方法。6. Ferrite magnetic powder, samarium (Sm), neodymium (Nd), cerium (C)
4. The method according to claim 1, wherein e) an alloy magnetic powder containing a rare earth element such as prasedium (Pr) and a magnetic powder obtained by mixing these magnetic powders are used.
も結合剤である熱可塑性樹脂が、樹脂結合型磁石を成形
する段階で磁性粉末に対し、総重量の４５％以下である
ことを特徴とする請求項１から３記載の製造方法。7. The weight ratio of the resin-bonded magnet is at least 45% or less of the total weight of the thermoplastic resin as a binder with respect to the magnetic powder at the stage of molding the resin-bonded magnet. The method according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11097518A JP2000294439A (en) | 1999-04-05 | 1999-04-05 | Manufacture of resin-bonded magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11097518A JP2000294439A (en) | 1999-04-05 | 1999-04-05 | Manufacture of resin-bonded magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000294439A true JP2000294439A (en) | 2000-10-20 |
Family
ID=14194488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11097518A Pending JP2000294439A (en) | 1999-04-05 | 1999-04-05 | Manufacture of resin-bonded magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000294439A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10568839B2 (en) | 2011-01-11 | 2020-02-25 | Capsugel Belgium Nv | Hard capsules |
| US11319566B2 (en) | 2017-04-14 | 2022-05-03 | Capsugel Belgium Nv | Process for making pullulan |
| US11576870B2 (en) | 2017-04-14 | 2023-02-14 | Capsugel Belgium Nv | Pullulan capsules |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05251222A (en) * | 1992-03-05 | 1993-09-28 | Seiko Epson Corp | Resin-bonded magnet |
| JPH0817614A (en) * | 1994-07-01 | 1996-01-19 | Japan Steel Works Ltd:The | Polylactic acid plastic magnet molding material and manufacture of magnet product |
| JPH1081815A (en) * | 1996-09-04 | 1998-03-31 | Mitsui Petrochem Ind Ltd | Resin composition |
| JPH10237324A (en) * | 1996-12-27 | 1998-09-08 | Kanegafuchi Chem Ind Co Ltd | Flame-retardant resin material, flame-retardant resin magnetic material and electron beam regulator using the resin magnetic material |
-
1999
- 1999-04-05 JP JP11097518A patent/JP2000294439A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05251222A (en) * | 1992-03-05 | 1993-09-28 | Seiko Epson Corp | Resin-bonded magnet |
| JPH0817614A (en) * | 1994-07-01 | 1996-01-19 | Japan Steel Works Ltd:The | Polylactic acid plastic magnet molding material and manufacture of magnet product |
| JPH1081815A (en) * | 1996-09-04 | 1998-03-31 | Mitsui Petrochem Ind Ltd | Resin composition |
| JPH10237324A (en) * | 1996-12-27 | 1998-09-08 | Kanegafuchi Chem Ind Co Ltd | Flame-retardant resin material, flame-retardant resin magnetic material and electron beam regulator using the resin magnetic material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10568839B2 (en) | 2011-01-11 | 2020-02-25 | Capsugel Belgium Nv | Hard capsules |
| US11319566B2 (en) | 2017-04-14 | 2022-05-03 | Capsugel Belgium Nv | Process for making pullulan |
| US11576870B2 (en) | 2017-04-14 | 2023-02-14 | Capsugel Belgium Nv | Pullulan capsules |
| US11878079B2 (en) | 2017-04-14 | 2024-01-23 | Capsugel Belgium Nv | Pullulan capsules |
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