JPH0358771B2 - - Google Patents
Info
- Publication number
- JPH0358771B2 JPH0358771B2 JP60101369A JP10136985A JPH0358771B2 JP H0358771 B2 JPH0358771 B2 JP H0358771B2 JP 60101369 A JP60101369 A JP 60101369A JP 10136985 A JP10136985 A JP 10136985A JP H0358771 B2 JPH0358771 B2 JP H0358771B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- rods
- rotating body
- cylindrical container
- wall
- 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 - Lifetime
Links
- 239000006185 dispersion Substances 0.000 claims description 22
- 239000011324 bead Substances 0.000 claims description 21
- 239000003973 paint Substances 0.000 claims description 17
- 239000006247 magnetic powder Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 239000002612 dispersion medium Substances 0.000 claims 1
- 229920005596 polymer binder Polymers 0.000 claims 1
- 239000002491 polymer binding agent Substances 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000005336 cracking Methods 0.000 description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- -1 Acrylic modified vinyl chloride vinyl acetate Chemical class 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 235000021357 Behenic acid Nutrition 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- 229940116226 behenic acid Drugs 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
- B01F27/902—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms cooperating with intermeshing elements fixed on the receptacle walls
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Paints Or Removers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Description
（発明の分野）
本発明は磁性塗料に関し、更に詳しくはピン型
ミルにおける磁性塗料の分散効率をより高める為
の方法に関する。
（従来技術）
従来、磁性塗料は、デイスク型ミル或いはピン
型ミル等の分散機において磁性塗料混合液と、補
助媒体のビーズとを撹拌して分散されている。一
般的に、こうした分散機における分散能力は、前
記ビーズの該分散機への充填率、ビーズ径、ビー
ズ比重、回転体ロツド先端の周速、及び分散段数
等の各要素によつて決定される。この内、回転体
ロツド先端の周速に関しては、前記デイスク型ミ
ルに於いては８乃至12ｍ／ｓ、ピン型ミルに於て
はロツドとビーズとの衝突によるビーズの割れ、
異常摩耗等を考慮して４乃至７ｍ／ｓの速度が使
用されている。
然し乍ら、より短時間で磁性塗料の良好な分散
状態を得るべく、前記分散機の容量の増大化を図
るに当つては一般に、前記回転体ロツドの先端周
速はそのままとされ、分散段数が増加される。ま
た分散機の大型化に伴つて円筒容器内側壁のロツ
ドと回転体ロツドとの垂直方向間隔が必然的に広
がり、この為分散効率は低下し、良好な分散状態
の磁性塗料を得るにはかなりの時間を要してしま
う。この問題を解決する為、ピン型ミルに於て回
転体ロツド先端の周速を上げる事或いはビーズ充
填率を高める事等が考えられた。然し、ロツド先
端の周速を上げる事はビーズの割れ及び異常摩耗
を招き、一方ビーズ充填率は既に70乃至80％に達
している為、ビーズを更に充填すると、分散機始
動時のロツクを来す恐れがある為、容易には分散
効率を向上し得なかつた。
下表に市販されているピン型ミルを掲げる。
FIELD OF THE INVENTION The present invention relates to magnetic paints, and more particularly to a method for increasing the dispersion efficiency of magnetic paints in a pin-type mill. (Prior Art) Conventionally, a magnetic paint is dispersed by stirring a magnetic paint mixture and beads as an auxiliary medium in a dispersing machine such as a disk-type mill or a pin-type mill. Generally, the dispersion ability of such a dispersing machine is determined by various factors such as the filling rate of the beads into the dispersing machine, the bead diameter, the specific gravity of the beads, the peripheral speed of the tip of the rotating body rod, and the number of dispersion stages. . Among these, the circumferential speed of the tip of the rotating body rod is 8 to 12 m/s in the disk type mill, and the cracking of the beads due to collision between the rod and the beads in the pin type mill.
A speed of 4 to 7 m/s is used in consideration of abnormal wear and the like. However, in order to obtain a good dispersion state of magnetic paint in a shorter time, when increasing the capacity of the dispersing machine, the peripheral speed of the tip of the rotating rod is generally kept unchanged, and the number of dispersion stages is increased. be done. Furthermore, as the size of the dispersion machine increases, the vertical distance between the rod on the inner wall of the cylindrical container and the rotor rod inevitably increases, which reduces the dispersion efficiency and makes it difficult to obtain magnetic paint with a good dispersion state. It takes a lot of time. In order to solve this problem, it has been considered to increase the circumferential speed of the tip of the rotary rod in the pin type mill or to increase the bead filling rate. However, increasing the circumferential speed of the rod tip will lead to cracking and abnormal wear of the beads, and on the other hand, since the bead filling rate has already reached 70 to 80%, filling the dispersion machine further will cause the dispersion machine to lock when starting. Therefore, the dispersion efficiency could not be easily improved. The table below lists commercially available pin type mills.
【表】
＊ 間隔とは円筒容器内側壁のロツドと回転
体ロツドとの垂直方向距離を表す。
（発明の目的）
本発明は従来より使用されているピン型ミルに
於て、ビーズの割れ及び異常摩耗を生じる事無
く、分散効率を高め、短時間で良好な分散状態の
磁性塗料を得ることを目的としている。
（発明の概要）
本発明によれは、ピン型ミルの内側壁に設けら
れたロツドと回転体に設けられたロツドとは互い
の垂直方向距離即ち間隔がある一定の範囲に設定
され、ビーズ摩耗及び磁気特性的に影響の無い範
囲内で従来より短時間で良好な分散状態の磁性塗
料が得られる。
（実施例の説明）
以下図面を参照して本発明を詳しく説明する。
第１図は従来より使用されているピン型ミル１
の構造図である。概ピン型ミル１に於ては、分散
の為の補助媒体としてのビーズと、被分散体であ
る磁性塗料混合液とが円筒容器内２に充填されて
いる。一方、ミル１の円筒容器３の内側壁及び回
転体４の外周には、夫々互いに等間隔で交差する
様にして複数ロツド５が設けられている。前記ミ
ル１の分散効率を高めて従来より短時間で磁性塗
料を良好な分散状態とする為、従来、回転体先端
と周速を上げるか或いはビーズ充填率を高めるか
の方法が考えられたが、これらの方法は何れもビ
ーズの割れ、摩耗等を招き、更には前記ミルの起
動時のロツクを生ずる恐れをも有していた。そこ
でこうした問題を生じない範囲で良好な分散状態
の磁性塗料を得る為の方法を検討した結果、本出
願人は、円筒容器内側壁に設けられたロツドと、
回転体のロツドとの垂直方向の距離、即ち間隔を
或る一定間隔に設定する事を見出した。
分散効率及びビーズ摩耗度と、前記ロツド同志
の間隔との関連性を調べる為、水平方向のロツド
数８×８本（回転体８本、円筒容器８本…第２図
参照）の分散機を用い組成に示す磁性塗料混合
液を、直径1.5mmのガラス製ビーズの充填率を75
％、塗料流量を２乃至３／分とした条件下で使
用し、前記ロツドの間隔を種々変更した。前記混
合溶液を１時間毎に厚さ25μｍのポリエステルフ
イルム上にハンドコータにて厚さ8μｍ程度に塗
布して光沢度を測定し、該光沢度が100％に達し
た後、該混合溶液に組成に示す混合溶液を新た
に加え再分散を実施した。再分散終了後、この混
合溶液を厚さ10μｍのポリエステルフイルム上に
厚さ4μｍに塗布し、表面に平滑処理を施した後、
前記フイルムを８mm巾に切断して磁気特性を評価
した。又、ビーズを20時間連続分散の後、取出し
て洗浄し、乾燥させた後全重量を秤量して摩耗度
を求めた。これらの結果を表−１に示す。表中
Hcは磁気テープとしての保磁力（Oe：エルステ
ツド）であり、Brは残留磁速密度（Ｇ…ガウス）
であり、Bmは飽和磁速密度（Ｇ…ガウス）であ
り、Br／Bmは角型比（無名数）を表わす。
組成
Fe金属磁性粉（KDK社 MAP−Ｔ−1500He＝
1500） ……2500重量部
アクリル変性塩化ビニル酢酸ビニル樹脂（電気化
学工業社 AR−10S） ……313 〃
アクリル変性ポリウレタン樹脂（日本ポリウレタ
ン社 YH 8009） ……104 〃
アクリル変性ポリウレタン樹脂（武田薬品工業社
XED−Ｏ） ……104 〃
アクリル変性ウレタンオリゴマー樹脂（日本ポリ
ウレタン社 YH−4016） ……140 〃
α−Al2O3 ……250 〃
分散助剤（例えばスパン60） ……250 〃
メチルエチルケトン ……3100重量部
メチルイソブチルケトン ……630 〃
シクロヘキサノン ……1260 〃
トルエン ……210 〃
組成
シクロヘキサノン ……1000重量部
メチルイソブチルケトン ……500 〃
トルエン ……200 〃
ステアリン酸ブチル ……130 〃
ベヘン酸 ……380 〃
この結果、円筒容器のロツドと回転体ロツドと
の間隔を下表１の如き、6.0mm乃至20mm、好まし
くは8.0mm乃至18.0mmの範囲に設定すれば良い事
が分つた。[Table] * Distance refers to the vertical distance between the rod on the inner wall of the cylindrical container and the rotor rod.
(Objective of the invention) The present invention is to improve the dispersion efficiency in the conventionally used pin-type mill without causing cracking or abnormal wear of the beads, and to obtain a magnetic paint in a good dispersed state in a short time. It is an object. (Summary of the Invention) According to the present invention, the rods provided on the inner wall of the pin-type mill and the rods provided on the rotary body are set within a certain range of vertical distances, that is, the spacing between them, and beads wear out. Moreover, a magnetic coating material with a good dispersion state can be obtained in a shorter time than before, within a range that does not affect the magnetic properties. (Description of Examples) The present invention will be described in detail below with reference to the drawings. Figure 1 shows the conventionally used pin type mill 1.
FIG. In the generally pin-type mill 1, a cylindrical container 2 is filled with beads as an auxiliary medium for dispersion and a magnetic paint mixture as an object to be dispersed. On the other hand, a plurality of rods 5 are provided on the inner wall of the cylindrical container 3 of the mill 1 and on the outer periphery of the rotating body 4 so as to intersect with each other at equal intervals. In order to improve the dispersion efficiency of the mill 1 and achieve a good dispersion of the magnetic paint in a shorter time than before, conventional methods have been considered to increase the tip and circumferential speed of the rotating body or increase the bead filling rate. All of these methods lead to cracking and abrasion of the beads, and there is also a risk that the mill may become locked when starting up. As a result of considering a method for obtaining a magnetic paint in a well-dispersed state without causing such problems, the present applicant has developed a method for obtaining a magnetic paint with a good dispersion state without causing such problems.
It was discovered that the vertical distance between the rotating body and the rod, that is, the interval, can be set at a certain constant interval. In order to investigate the relationship between the dispersion efficiency and bead abrasion degree and the spacing between the rods, a dispersion machine with 8 x 8 rods in the horizontal direction (8 rotating bodies, 8 cylindrical containers...see Figure 2) was used. The magnetic paint mixture shown in the composition used was filled with glass beads with a diameter of 1.5 mm at a filling rate of 75.
%, the paint flow rate was 2 to 3 minutes per minute, and the spacing between the rods was varied. The mixed solution was coated every hour on a polyester film with a thickness of 25 μm to a thickness of about 8 μm using a hand coater to measure the glossiness, and after the glossiness reached 100%, the mixed solution was coated with the composition. A new mixed solution shown in was added to perform redispersion. After redispersion, this mixed solution was applied to a thickness of 4 μm on a 10 μm thick polyester film, and the surface was smoothed.
The film was cut into 8 mm width pieces and their magnetic properties were evaluated. Further, after continuous dispersion of the beads for 20 hours, the beads were taken out, washed, dried, and the total weight was weighed to determine the degree of abrasion. These results are shown in Table-1. In the table
Hc is the coercive force (Oe: Oersted) as a magnetic tape, and Br is the residual magnetic velocity density (G...Gauss)
, Bm is the saturation magnetic velocity density (G...Gauss), and Br/Bm represents the squareness ratio (anonymous number). Composition Fe metal magnetic powder (KDK MAP-T-1500He=
1500) ...2500 parts by weight Acrylic modified vinyl chloride vinyl acetate resin (Denki Kagaku Kogyo Co., Ltd. AR-10S) ...313〃 Acrylic modified polyurethane resin (Japan Polyurethane Co., Ltd. YH 8009) ...104〃 Acrylic modified polyurethane resin (Takeda Pharmaceutical Co., Ltd.) company
XED-O) ……104 〃 Acrylic modified urethane oligomer resin (Nippon Polyurethane Co., Ltd. YH-4016) ……140 〃 α-Al 2 O 3 ……250 〃 Dispersion aid (e.g. Span 60) ……250 〃 Methyl ethyl ketone …… 3100 parts by weight Methyl isobutyl ketone ...630 〃 Cyclohexanone ...1260 〃 Toluene ...210 〃 Composition cyclohexanone ...1000 parts by weight Methyl isobutyl ketone ...500 〃 Toluene ...200 〃 Butyl stearate ...130 〃 Behenic acid ... 380 As a result, it was found that the distance between the rod of the cylindrical container and the rotor rod should be set in the range of 6.0 mm to 20 mm, preferably 8.0 mm to 18.0 mm, as shown in Table 1 below.
【表】【table】
【表】
従つて、円筒容器のロツドと回転体ロツドとの
間隔を前述の如く設定する事により、従来よりも
短時間で良好な分散状態の磁性塗料を得る事が出
来る。
以上実施に基き説明したが、本発明の内で多く
の変更を為し得る事を銘記されたい。[Table] Therefore, by setting the distance between the rod of the cylindrical container and the rod of the rotating body as described above, it is possible to obtain a magnetic paint in a good dispersed state in a shorter time than conventionally. Although the foregoing has been described in terms of implementation, it should be noted that many modifications may be made within the invention.
第１図はピン型ミルの概略構造図。第２図は第
１図のピン型ミルの概略平面図。第３図は円筒容
器内側壁のロツドと回転体ロツドとの垂直方向間
隔対光沢100％迄の滞留時間及び前記間隔対ビー
ズ摩耗度を表すグラフ。である。図中主な部分の
名称は以下の通りである。
１：ピン型ミル、３：円筒容器、４：回転体、
５：ロツド。
Figure 1 is a schematic structural diagram of a pin type mill. FIG. 2 is a schematic plan view of the pin type mill shown in FIG. 1. FIG. 3 is a graph showing the vertical distance between the rod on the inner wall of the cylindrical container and the rotor rod versus the residence time until 100% gloss, and the distance versus the degree of bead wear. It is. The names of the main parts in the figure are as follows. 1: Pin type mill, 3: Cylindrical container, 4: Rotating body,
5: Rod.
Claims (1)
出する複数のロツドが軸方向に複数段階設けられ
た円周容器と、該円周容器内に同中心に回転自在
に設置された回転体にして、外側壁に円周上に一
定間隔で半径方向に突出する複数の回転体ロツド
が前記円筒容器の複数段のロツド、各段の間毎に
複数段設けられ、該回転体の回転によつて前記円
筒容器及び回転体の各々のロツドが回転軸方向に
互いに交差状態となる分散機、即ちピン型ミルを
使用した磁性塗料の製造方法にして、前記ミルに
磁性粉末と高分子バインダーと溶剤と分散媒体と
してのビーズとをビーズの充填率70〜80％で前記
回転体ロツドの先端の周速が４〜７ｍ／秒で、且
つ前記円筒容器内側壁のロツドと前記回転体ロツ
ドとの垂直方向の間隔を、6.0mm乃至20.0mmの範
囲に設定して前記ミルを作動させて分散させるこ
とにより分散効率を高める事を特徴とする、磁性
塗料の製造方法。 ２ 円筒容器内側壁のロツドと前記回転体ロツド
との垂直方向の間隔を8.0mm乃至18.0mmの範囲に
設定した前記第１項記載の磁性塗料の製造方法。[Claims] 1. A circumferential container in which a plurality of rods protruding toward the center at regular intervals circumferentially are provided on the inner wall in multiple stages in the axial direction, and the rods rotate concentrically within the circumferential container. A plurality of rotary body rods which are freely installed and protrude in the radial direction from the outer wall at regular intervals on the circumference are provided in the plurality of stages of the cylindrical container, and between each stage, a plurality of rotary body rods are provided. A method for producing a magnetic paint using a dispersing machine, that is, a pin-type mill, in which the rods of the cylindrical container and the rotating body intersect with each other in the direction of the rotational axis due to the rotation of the rotating body, Magnetic powder, a polymer binder, a solvent, and beads as a dispersion medium are mixed at a bead filling rate of 70 to 80%, a circumferential speed of the tip of the rotating body rod is 4 to 7 m/sec, and the rod on the inner wall of the cylindrical container is A method for producing a magnetic paint, characterized in that dispersion efficiency is increased by operating the mill and dispersing by setting a vertical distance between the rod and the rotating body rod in the range of 6.0 mm to 20.0 mm. 2. The method for producing a magnetic paint according to item 1 above, wherein the vertical distance between the rod on the inner wall of the cylindrical container and the rotary rod is set in the range of 8.0 mm to 18.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60101369A JPS61259739A (en) | 1985-05-15 | 1985-05-15 | Preparation of magnetic coat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60101369A JPS61259739A (en) | 1985-05-15 | 1985-05-15 | Preparation of magnetic coat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61259739A JPS61259739A (en) | 1986-11-18 |
| JPH0358771B2 true JPH0358771B2 (en) | 1991-09-06 |
Family
ID=14298903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60101369A Granted JPS61259739A (en) | 1985-05-15 | 1985-05-15 | Preparation of magnetic coat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61259739A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2816362B2 (en) * | 1987-07-31 | 1998-10-27 | ティーディーケイ株式会社 | Powder for magnetic shielding, magnetic shielding material and powder manufacturing method |
| CN111250717B (en) | 2014-06-16 | 2022-11-18 | 联邦科学与工业研究组织 | Method for producing a powder product |
| WO2016019213A1 (en) * | 2014-07-31 | 2016-02-04 | Dow Global Technologies Llc | In-line dynamic mixing apparatus for flocculating and dewatering oil sands fine tailings |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853243B2 (en) * | 1979-04-09 | 1983-11-28 | コンバツション・エンヂニアリング・インコ−ポレ−テッド | Temporary workbench for steam generator |
| JPS6082148A (en) * | 1983-10-13 | 1985-05-10 | サカタインクス株式会社 | Continuous media type dispersing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853243U (en) * | 1981-10-02 | 1983-04-11 | 飯岡 正勝 | ball mill |
-
1985
- 1985-05-15 JP JP60101369A patent/JPS61259739A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853243B2 (en) * | 1979-04-09 | 1983-11-28 | コンバツション・エンヂニアリング・インコ−ポレ−テッド | Temporary workbench for steam generator |
| JPS6082148A (en) * | 1983-10-13 | 1985-05-10 | サカタインクス株式会社 | Continuous media type dispersing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61259739A (en) | 1986-11-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |