JPS59228930A - Preparation of liquid drop for microcapsule - Google Patents

Preparation of liquid drop for microcapsule

Info

Publication number
JPS59228930A
JPS59228930A JP10417883A JP10417883A JPS59228930A JP S59228930 A JPS59228930 A JP S59228930A JP 10417883 A JP10417883 A JP 10417883A JP 10417883 A JP10417883 A JP 10417883A JP S59228930 A JPS59228930 A JP S59228930A
Authority
JP
Japan
Prior art keywords
horn
substance
ultrasonic horn
tank
ultrasonic
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
Application number
JP10417883A
Other languages
Japanese (ja)
Inventor
Takashi Mochida
隆 持田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ikutoku Gakuen School Corp
Original Assignee
Ikutoku Gakuen School Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ikutoku Gakuen School Corp filed Critical Ikutoku Gakuen School Corp
Priority to JP10417883A priority Critical patent/JPS59228930A/en
Publication of JPS59228930A publication Critical patent/JPS59228930A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02Making microcapsules or microballoons
    • B01J13/04Making microcapsules or microballoons by physical processes, e.g. drying, spraying

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

PURPOSE:To make uniform the particle size of liquid drops for microcapsules with high efficiency by flowing a shell substance and a core substance for microcapsule downward along the external surface of an ultrasonic wave horn and atomizing said substances at the bottom surface of the horn. CONSTITUTION:An ultrasonic wave horn 3 is designed to vibrate only upward and downward, and a core substance tank 4 is provided to above a shell substance tank 5 at the middle part of the horn with the bottom of each tank penetrated by the horn 3. Downflow slits 6, 7 are provided respectively to the penetrating part with adjusted clearances between the inside peripheral edge of the penetrating hole at the bottom of each tank 4, 5 and the external surface of the horn 3, and the vertical distance between the core substance tank 4 and the shell substance tank 5 is also set specifically. When both substances are flowed down along the external surface of the horn 3 and reach the bottom end 3a of the horn 3, both are atomized by the vibration caused by the ultrasonic wave.

Description

【発明の詳細な説明】 本発明はマイクロカプセルの壁膜物質と心物質とを超音
波ホーンの外面を流下させてその下面で噴霧させること
により簡単に能率良く粒径の均一なマイクロカプセル液
滴を製造する方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention allows the wall substance and core substance of microcapsules to be made to flow down the outer surface of an ultrasonic horn and sprayed on the lower surface of the ultrasonic horn, thereby easily and efficiently producing microcapsule droplets with a uniform particle size. The present invention relates to a method for manufacturing.

微粒子をマイクロカプセル化して得られるマイクロカプ
セルは例えば液晶表示装置、感圧型接着剤、感圧複写紙
等積々な分野に広く用いられている。このようなマイク
ロカプセル化を超音波を利用して行なう方法すなわち心
物質から成る噴霧液を超音波により噴霧する超音波噴霧
方法としては従来槽々な方法が知られており、他の噴霧
方法、例えば回転円板式噴一方法、圧力ノズル式噴霧方
法、二流体ノズル式噴霧方法等に比べて噴霧液滴径が均
一である利点はらった。しかしながら従来の超音波噴霧
方法ではホーンの中心線上に穿った毛細管に噴霧液を供
給するか、’17’(はホーンの先端に細か管から噴霧
液を供給するため、噴霧液の処理能率が低く工業的実施
が困難な欠点があった。
Microcapsules obtained by microcapsulating fine particles are widely used in a variety of fields such as liquid crystal display devices, pressure-sensitive adhesives, and pressure-sensitive copying paper. Conventionally, various methods are known as a method of performing such microencapsulation using ultrasound, that is, a method of ultrasonic spraying in which a spray liquid consisting of cardiac substance is sprayed using ultrasound, and other spraying methods, For example, compared to a rotating disk type spray method, a pressure nozzle type spray method, a two-fluid nozzle type spray method, etc., this method has the advantage that the spray droplet diameter is uniform. However, in conventional ultrasonic spraying methods, the spray liquid is supplied to a capillary tube drilled on the center line of the horn, or the spray liquid is supplied from a capillary tube to the tip of the horn, resulting in low spray liquid processing efficiency. There were drawbacks that made it difficult to implement industrially.

本発明者は上記従来技術の如き欠点なく簡単に小さな出
力で能率良くマイクロカプセル液滴を製造する方法の提
供を目的に研究した結果、心物質と壁膜物質とから成る
噴霧液を同時に超音波ホーンの外面を流下せしめて下面
に至って噴霧せしめることにより目的を達成することが
できることを究明して本発明を完成した。
As a result of research aimed at providing a method for easily and efficiently producing microcapsule droplets with a small output without the disadvantages of the prior art described above, the present inventor has discovered that a spray liquid consisting of cardiac substance and wall membrane substance can be simultaneously ultrasonicated. The present invention was completed after discovering that the object could be achieved by causing the spray to flow down the outer surface of the horn and reach the lower surface.

すなわち本発明は、超音波ホーンの外面に沿ってマイク
ロカプセル用の心物質を、更に該心物質の外面に壁膜物
質をそれぞれ流下せしめて該超音波ホーンの下面に上記
2物質を濡れ膜状態に供給し、該超音波ホーンに上下方
向の超音波振動を与えることによって該超音波ホーンの
下面に位置する上記2物質を微粒子状に噴霧させること
により上記心物質が壁膜物質により被覆されたマイクロ
カプセル液滴を製造する方法に関するものである。
That is, the present invention allows the core material for microcapsules to flow down along the outer surface of the ultrasonic horn, and the wall membrane material to flow down on the outer surface of the core material, thereby coating the lower surface of the ultrasonic horn with the two substances in a wet film state. By applying vertical ultrasonic vibrations to the ultrasonic horn, the two substances located on the lower surface of the ultrasonic horn were sprayed in the form of fine particles, so that the cardiac substance was coated with the wall membrane substance. The present invention relates to a method for manufacturing microcapsule droplets.

以下、本発明方法を図により詳細に説明する。Hereinafter, the method of the present invention will be explained in detail with reference to the drawings.

図は本発明方法の実施に好適な製造装置例の説明図であ
る。本発明方法においては、マイクロカプセル用の心物
質と壁膜物質とを超音波ホーンの外面に沿って流下させ
、超音波ホーンの下面に上記2物質を濡れ膜状態に供給
する。このとき、次に行なわれる噴霧化において心物質
を6部に壁膜物質を外部に容易に構成されるように、心
物質を超音波ホーンの外面に流下せしめ、その心物質の
外面に壁膜物質を流下させ、超音波ホーンの下面に至っ
てそこから超音波振動により噴mさせるのである。この
ように2物質を流下せしめ、噴霧させる好ましい具体的
方法の1例を図により説明する。
The figure is an explanatory diagram of an example of a manufacturing apparatus suitable for carrying out the method of the present invention. In the method of the present invention, a core substance and a wall substance for microcapsules are caused to flow down along the outer surface of an ultrasonic horn, and the two substances are supplied in a wet film state to the lower surface of the ultrasonic horn. At this time, the cardiac substance is caused to flow down onto the outer surface of the ultrasonic horn so that the cardiac substance is easily formed into 6 parts and the parietal membrane substance is formed on the outside in the next atomization, and the membrane membrane is formed on the outer surface of the cardiac substance. The substance is caused to flow down to the bottom surface of the ultrasonic horn, where it is ejected by ultrasonic vibrations. An example of a preferable specific method of causing two substances to flow down and atomize as described above will be explained with reference to the drawings.

図に例示されている超音波発振機本体1に入力コネクタ
ー2より振動子入力電力を受は入れ、超音波発振機本体
1に内蔵されている超音波発振子を駆動される。この発
振子に固着された振動系内を超音波が伝播する間に振幅
が拡大され、末端の超音波ホーン6で振幅は最大となる
。この超音波ホーン6は上下方向にのみ振動をするよう
に設計されており、横振動は顕微鏡観察によってもほと
んど認められないものである。超音波ホーン乙の中央部
には上方に心物質槽4が、また下方に壁膜物質槽5がそ
れぞれの底部を超音波ホーン6で貫通された状態に設け
られており、この貫通部では各種4,5の各底部の貫通
孔内周縁と超音波ホーンろの外面との間に調整された僅
かな間隙の流下口6.7がそれぞれ設けられていると共
に、心物質槽4と塗膜物質槽5との上下間距離も短く設
定されている。このような超音波装置を使用し、心物質
を心物質槽4に、壁膜物質を壁膜物質槽5にそれぞれ供
給すれば、心物質は流下口6から流出して超音波ホーン
乙の外面に沿って流下ロアをも通り抜けて濡れ膜状に流
下し、壁膜物質は流下ロアから流出して流下中の心物質
の外面に沿って更に流下する。このようにして心物質と
壁膜物質とを超音波ホーン乙の外面に漬って流下せしめ
その下面6aに至らしめる。
The ultrasonic oscillator main body 1 illustrated in the figure receives transducer input power from the input connector 2, and the ultrasonic oscillator built in the ultrasonic oscillator main body 1 is driven. While the ultrasonic waves propagate within the vibration system fixed to this oscillator, the amplitude is expanded, and the amplitude reaches its maximum at the ultrasonic horn 6 at the end. This ultrasonic horn 6 is designed to vibrate only in the vertical direction, and lateral vibration is hardly observed even by microscopic observation. In the center of the ultrasonic horn B, a heart substance tank 4 is provided above and a wall membrane substance tank 5 is provided below, the bottoms of which are penetrated by an ultrasonic horn 6. 4 and 5 are respectively provided with flow ports 6 and 7 with a small gap adjusted between the inner peripheral edge of the through hole at the bottom and the outer surface of the ultrasonic horn filter. The vertical distance to the tank 5 is also set short. If such an ultrasonic device is used and the heart substance is supplied to the heart substance tank 4 and the wall membrane substance is supplied to the wall substance tank 5, the heart substance will flow out from the flow outlet 6 and reach the outer surface of the ultrasonic horn B. The wall material flows out from the downstream lower part and further flows down along the outer surface of the core material flowing down. In this way, the heart substance and the wall membrane substance are immersed in the outer surface of the ultrasonic horn B and flow down to the lower surface 6a thereof.

本発明方法では上記の如く2物質を超音波ホーンろの外
面を流下させながら、超音波発振子を駆動させてその超
音波ホーン乙に超音波振動を与えるのである。本発明方
法においては超音波振動の周波数を限定するものではな
いが、使用する超音波ホーン乙の末端で振幅が最大とな
る周波数を予備テストにより選択することが好ましい。
In the method of the present invention, as described above, while the two substances are flowing down the outer surface of the ultrasonic horn filter, the ultrasonic oscillator is driven to apply ultrasonic vibrations to the ultrasonic horn. In the method of the present invention, the frequency of the ultrasonic vibration is not limited, but it is preferable to select the frequency at which the amplitude is maximum at the end of the ultrasonic horn used through a preliminary test.

前記したように超音波ホーン6は上下振動のみをするよ
うに設計されているから、心物質と壁膜物質とは超音波
ホーン6の外面を濡れ膜状に流下している間は噴霧化さ
れず、超音波ホーン乙の下面6aに達したときに、上下
方向の超音波振動により噴霧される。このようにして生
成した噴霧液滴は超音波ホーン3の下面6aから飛翔し
て次工程に移され、例えば超音波ホーン乙の下方に設置
された硬化液槽8に落下する。この噴霧液滴が飛翔する
ときの広がりは回転円板式噴霧方法等の他の噴霧方法に
比べて非常に小さいことが判り、例えば、水を0.1 
、0.17 、0.3 、0.5及び0.8t/分で流
したとき、噴霧液滴の水平方向の最大飛翔距離はそれぞ
れ167 、211 、278 、415 、及び54
3rn、恥であった。従って製造スペースを狭くするこ
とができる利点がある。又超音波ホーン乙の外面に心物
質と壁膜物質とを濡れ膜状態に供給することにより小さ
な出力でこれら噴霧液の処理能率を非常に増大させるこ
とができ、例えば周波数25.7KHz +出力150
Wの標準的な超音波発振子によって超音波振動を与えら
れる超音波ホーン乙によれば、1時間当り噴霧成約50
tの処理が可能である。心物質の流下量に対する壁膜物
質の流下量の比をそれぞれの物質の濃度、物性に応じて
変化する適切な範囲に調節することにより、超音波ホー
ン乙の下面で噴霧された液滴は心物質を6部とし壁膜物
質を壁膜とする構成を成しており、かくして本発明方法
による心物質が壁膜物質により被覆されたマイクロカプ
セル液滴の製造は終了し、更に以後の工程を経てマイク
ロカプセルが得うレる。
As mentioned above, since the ultrasonic horn 6 is designed to vibrate only up and down, the heart substance and the wall membrane substance are not atomized while flowing down the outer surface of the ultrasonic horn 6 in a wet film form. First, when it reaches the lower surface 6a of the ultrasonic horn B, it is sprayed by vertical ultrasonic vibrations. The spray droplets thus generated fly from the lower surface 6a of the ultrasonic horn 3, are transferred to the next step, and fall, for example, into a curing liquid tank 8 installed below the ultrasonic horn A. It has been found that the spread of this spray droplet when flying is very small compared to other spray methods such as the rotating disk spray method.
, 0.17, 0.3, 0.5, and 0.8 t/min, the maximum horizontal flight distance of the spray droplets is 167, 211, 278, 415, and 54, respectively.
3rn, it was embarrassing. Therefore, there is an advantage that the manufacturing space can be reduced. Furthermore, by supplying the heart substance and wall membrane substance in a wet film state to the outer surface of the ultrasonic horn, the processing efficiency of these spray liquids can be greatly increased with a small output.
According to the ultrasonic horn B, which is given ultrasonic vibration by a standard ultrasonic oscillator of W, it can spray approximately 50% per hour.
It is possible to process t. By adjusting the ratio of the amount of wall membrane material flowing down to the amount of heart material flowing down to an appropriate range that changes depending on the concentration and physical properties of each substance, the droplets sprayed on the underside of the ultrasonic horn B are It has a structure in which the substance is 6 parts and the wall membrane substance is the wall membrane.Thus, the production of microcapsule droplets in which the heart substance is covered with the wall membrane substance by the method of the present invention is completed, and further steps are performed. After that, microcapsules are obtained.

本発明方法において壁膜物質としては、例えばアルギン
酸ソーダの如き硬化液で硬化する物質や、例えば溶剤可
溶性ポリマー、アラビヤゴムの如キ噴霧飛翔中に乾燥す
る噴霧乾燥法の物質を使用することができる。
In the method of the present invention, the wall material may be a material that is cured with a curing liquid, such as sodium alginate, or a material that is dried during spraying, such as a solvent-soluble polymer or gum arabic, which is dried during spraying.

本発明方法により製造されたマイクロカプセル液滴をマ
イクロカプセルとするには、使用した壁膜物質の種類に
より液中硬化法、噴霧乾燥法等適切な方法を適用して硬
化させれば良い。例えば壁膜物質として硬化液で硬化す
る物質を使用して図に示す液中硬化法による場合には、
超音波ホーン6の下面3aから飛翔するマイクロカプセ
ル液滴を硬化液槽8に落下せしめ、壁膜物質を硬化液と
反応させて硬化させる。この場合、硬化液が静止状態に
あると、マイクロカプセル同士が表面で付着した製品と
なる恐れがあるので、硬化液はポンプで循還させ流動さ
せながら硬化液槽8からオーバ70−させ、オーバフロ
ーした硬化液は金網等でマイクロカプセルを分離し、更
にドラパル或はシャープレス等の遠心沈降分離機で精製
し循還させることが好筐しい。また、壁膜物質として噴
霧乾燥性の物質を使用するときは、必要に応じ予め壁膜
物質に乾燥助剤を添加しておき、噴霧乾燥性により乾燥
硬化せしめれば良い。
In order to form microcapsule droplets produced by the method of the present invention into microcapsules, they may be cured by an appropriate method such as an in-liquid curing method or a spray drying method depending on the type of wall material used. For example, if a material that hardens with a hardening liquid is used as the wall film material and the submerged hardening method shown in the figure is used,
Microcapsule droplets flying from the lower surface 3a of the ultrasonic horn 6 fall into the hardening liquid tank 8, and the wall film material is reacted with the hardening liquid and hardened. In this case, if the curing liquid is in a stationary state, there is a risk that the product will have microcapsules attached to each other on the surface, so the curing liquid is circulated and flowing with a pump and allowed to overflow from the curing liquid tank 8. It is preferable to separate the microcapsules from the cured liquid using a wire mesh or the like, further purify it using a centrifugal sedimentation separator such as Drapal or Sharpless, and then circulate it. Furthermore, when a spray-drying material is used as the wall material, a drying aid may be added to the wall material in advance if necessary, and the material may be dried and hardened by spray-drying.

以下、実施例により本発明方法を更に説明する。The method of the present invention will be further explained below with reference to Examples.

実施例1 図に示す製造装置を使用し、心物質としてオリーブ油を
0.03t/分から0.3A/分の範囲で流量を変えて
心物質[4に注入して超音波ホーン乙の外面を流下せし
め、壁膜物質としてアルギン酸ナトリウムの0.5係水
溶液を0.5t/分の一定割合で壁膜物質槽5に注入し
て流下中のオリーブ油の外面に更に流下せしめながら出
力150W+周波数25.7KHzの超音波振動を超音
波ホーン乙に与えて、超音波ホーン3の下面6aから飛
翔する噴霧液滴を得た。
Example 1 Using the production equipment shown in the figure, olive oil was injected into the core material [4] at a flow rate ranging from 0.03 t/min to 0.3 A/min, and flowed down the outer surface of the ultrasonic horn B. Then, as a wall material, a 0.5% aqueous solution of sodium alginate was injected into the wall material tank 5 at a constant rate of 0.5 t/min, and while flowing further onto the outer surface of the flowing olive oil, the output was 150 W + frequency 25.7 KHz. Ultrasonic vibrations were applied to the ultrasonic horn B to obtain spray droplets flying from the lower surface 6a of the ultrasonic horn 3.

得られた液滴を10係の塩化カルシウム水溶液が硬化液
として循還している硬化液槽8中に落下せしめてマイク
ロカプセル化を実施したところ、オリーブ油の流下量が
0.03〜0.21t/分の場合にはマイクロカプセル
液滴の構成は完全で良好なマイクロカプセルが得られた
が、0.24t1分以上の場合では硬化液の表面にオリ
ーブ油が浮び、マイクロカプセル液滴の構成に不完全で
あった。完全なマイクロカプセルの直径のバラツキは、
例えばオリーブ油の流下量が0.15t/分のとき、最
小粒径10μ島、最大粒径210μ品で、個数分布は2
0μ乳から100μ島の間に91%と集中していた。
When the resulting droplets were dropped into a curing liquid tank 8 in which a 10% calcium chloride aqueous solution was being circulated as a curing liquid to carry out microencapsulation, the amount of olive oil flowing down was 0.03 to 0.21 t. When the temperature was 0.24t/min, the structure of the microcapsule droplets was perfect and good microcapsules were obtained, but when the temperature was 0.24t/min or more, olive oil floated on the surface of the hardening liquid, causing problems with the structure of the microcapsule droplets. It was perfect. The variation in diameter of perfect microcapsules is
For example, when the flow rate of olive oil is 0.15 t/min, the minimum particle size is 10μ, the maximum particle size is 210μ, and the number distribution is 2.
91% of them were concentrated between 0μ and 100μ islets.

実施例2 壁膜物質として1チのアルギン酸ナトリウムを使用した
以外は実施例1と同じ条件で噴霧液滴を得、マイクロカ
プセル化を実施したところ、実施例1と同様な結果を得
た。
Example 2 Sprayed droplets were obtained under the same conditions as in Example 1, except that 100% sodium alginate was used as the wall material, and microencapsulation was performed, and the same results as in Example 1 were obtained.

実施例6 壁膜物質として1.5係のアルギン酸ナトリウムを使用
した以外は実施例1と同じ条件で噴霧液滴を得、マイク
ロカプセル化を実施したところ、オリーブ油の流下量が
0.05〜0.12t/分の場合にはマイクロカプセル
液滴の構成は完全で良好なマイクロカプセルが得られた
が、0.15t/分以上ではマイクロカプセル液滴の構
成は不完全であった。
Example 6 Sprayed droplets were obtained under the same conditions as in Example 1 except that sodium alginate with a coefficient of 1.5 was used as the wall membrane material, and microencapsulation was performed. As a result, the amount of olive oil flowing down was 0.05 to 0. At 0.12 t/min, the structure of the microcapsule droplets was complete and good microcapsules were obtained, but at 0.15 t/min or more, the structure of the microcapsule droplets was incomplete.

以上、本発明方法によれば、心物質を超音波ホーンの外
面に、更にその上に壁膜物質をそれぞれ流下せしめて超
音波ホーンの下面から噴霧せしめることにより、簡単に
小さな出力で能率良く粒径の均一なマイクロカプセル液
滴を製造することができ、マイクロカプセルの品質向上
、コスト低減により種々な用途における使用量の拡大を
図ることができる。
As described above, according to the method of the present invention, the heart substance is caused to flow down onto the outer surface of the ultrasonic horn, and the wall membrane substance is caused to flow down onto the outer surface of the ultrasonic horn, respectively, and the particles are sprayed from the lower surface of the ultrasonic horn, thereby easily and efficiently atomizing particles with a small output. Microcapsule droplets with a uniform diameter can be produced, and by improving the quality of microcapsules and reducing costs, it is possible to expand the amount of microcapsules used in various applications.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明方法の実施に好適な製造装置例の説明図であ
る。 1・・超音波発振機本体 2・・入力コネクター 6・・ホーン 6a・・下面 4・・心物質槽 5・・壁膜物質槽 6・・流下口 ア・・流下口 8・・硬化液槽 / 7/−− 一、−m−/ 〕 1 3 ・6 5
The figure is an explanatory diagram of an example of a manufacturing apparatus suitable for carrying out the method of the present invention. 1...Ultrasonic oscillator main body 2...Input connector 6...Horn 6a...Bottom surface 4...Heart substance tank 5...Wall film substance tank 6...Outflow port a...Outflow port 8...Curing liquid tank / 7/-- 1, -m-/ ] 1 3 ・6 5

Claims (1)

【特許請求の範囲】 1 超音波ホーンの外面に沿ってマイクロカプセル用の
心物質を、更に核心物質の外面に壁膜物質をそれぞれ流
下せしめて該超音波ホーンの下面に上記2物質を濡れ膜
状態に供給し、該超音波ホーンに上下方向の超音波振動
を与えることによって該超音波ホーンの下面に位置する
上記2物質を微粒子状に噴霧させることにより上記心物
質が壁膜物質により被覆され九マイクロカプセル液滴を
製造する方法。 2 壁膜物質として硬化液で硬化する物質を使用する特
許請求の範囲第1項に記載のマイクロカプセル液滴を製
造する方法。 6 壁膜物質として噴霧乾燥性の物質を使用する特許請
求の範囲第1項に記載のマイクロカプセル液滴を製造す
る方法。
[Claims] 1. A core material for microcapsules is flowed down along the outer surface of the ultrasonic horn, and a wall film material is further flowed down on the outer surface of the core material to wet the lower surface of the ultrasonic horn with the above two substances. The two substances located on the lower surface of the ultrasonic horn are sprayed in the form of fine particles by applying ultrasonic vibrations in the vertical direction to the ultrasonic horn, thereby coating the heart substance with the wall membrane substance. 9. Method of manufacturing microcapsule droplets. 2. The method for producing microcapsule droplets according to claim 1, wherein a material that hardens with a hardening liquid is used as the wall film material. 6. The method for producing microcapsule droplets according to claim 1, wherein a spray-drying material is used as the wall material.
JP10417883A 1983-06-13 1983-06-13 Preparation of liquid drop for microcapsule Pending JPS59228930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10417883A JPS59228930A (en) 1983-06-13 1983-06-13 Preparation of liquid drop for microcapsule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10417883A JPS59228930A (en) 1983-06-13 1983-06-13 Preparation of liquid drop for microcapsule

Publications (1)

Publication Number Publication Date
JPS59228930A true JPS59228930A (en) 1984-12-22

Family

ID=14373756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10417883A Pending JPS59228930A (en) 1983-06-13 1983-06-13 Preparation of liquid drop for microcapsule

Country Status (1)

Country Link
JP (1) JPS59228930A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1462158A1 (en) * 2003-03-28 2004-09-29 Seiko Epson Corporation Droplet discharging device and manufacturing method of microcapsule
JP2007504216A (en) * 2003-09-04 2007-03-01 ペプトロン カンパニー リミテッド Method for producing sustained-release microspheres using an ultrasonic double feed nozzle
JP2018502167A (en) * 2015-01-20 2018-01-25 ヒアロ テクノロジーズ,エルエルシー Microsphere preparation method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1462158A1 (en) * 2003-03-28 2004-09-29 Seiko Epson Corporation Droplet discharging device and manufacturing method of microcapsule
US7128387B2 (en) 2003-03-28 2006-10-31 Seiko Epson Corporation Droplet discharging device and manufacturing method of microcapsule
CN100384525C (en) * 2003-03-28 2008-04-30 精工爱普生株式会社 Drop draining device and micro capsule mfg. method
JP2007504216A (en) * 2003-09-04 2007-03-01 ペプトロン カンパニー リミテッド Method for producing sustained-release microspheres using an ultrasonic double feed nozzle
JP2018502167A (en) * 2015-01-20 2018-01-25 ヒアロ テクノロジーズ,エルエルシー Microsphere preparation method

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