JP2664613B2 - Continuous melting equipment - Google Patents
Continuous melting equipmentInfo
- Publication number
- JP2664613B2 JP2664613B2 JP4360923A JP36092392A JP2664613B2 JP 2664613 B2 JP2664613 B2 JP 2664613B2 JP 4360923 A JP4360923 A JP 4360923A JP 36092392 A JP36092392 A JP 36092392A JP 2664613 B2 JP2664613 B2 JP 2664613B2
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- Prior art keywords
- solution
- pressure
- dissolving
- mixed
- tank
- Prior art date
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、寒天等の溶質を連続し
て溶解できる連続式溶解装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous melting apparatus capable of continuously melting a solute such as agar.
【０００２】[0002]
【従来の技術】寒天、カラギナン、ジェランガム等の水
溶性多糖類（溶質）を水（溶媒）に溶解させる場合、従
来は、溶解しようとする多糖類を溶解釜の中で水に分散
させて混合液を作り、この溶解釜を直火、蒸気等の熱源
によって加熱することで溶解させる手法をとる。この手
法では、溶解釜を一つのバッチ単位として加熱、溶解す
るので、この様にして溶解された多糖類（溶解液）を、
或る用途製品のゲル化剤、増粘剤、安定剤等として使用
する場合には、その用途製品の製造過程で多糖類添加後
の工程に進むまでに一定の待ち時間を必要とする。2. Description of the Related Art When water-soluble polysaccharides (solutes) such as agar, carrageenan and gellan gum are dissolved in water (solvent), conventionally, the polysaccharide to be dissolved is dispersed in water in a dissolving pot and mixed. A method is used in which a liquid is prepared, and the melting pot is heated and melted by a heat source such as an open flame or steam. In this method, the dissolving pot is heated and dissolved in one batch unit, so the polysaccharide (dissolution solution) dissolved in this way is
When used as a gelling agent, a thickener, a stabilizer or the like for a certain use product, a certain waiting time is required before proceeding to the step after the addition of the polysaccharide in the production process of the use product.
【０００３】また、溶解釜の中の溶解液は高温状態に保
持されながら徐々に使用されるため、遅くなって使用さ
れる溶解液は長時間高温状態に保持されるため熱劣化が
生じる。この結果、この溶解液を初期に添加された用途
製品と終期に添加された用途製品とでは、多少物性が異
なる場合も生ずる。更に、溶質の物性により、或いは溶
質濃度を上げることにより、溶液が高粘性である場合に
は、この様なバッチ単位の加熱では、溶解させるための
長い時間の間に、熱源表面に溶質の皮膜が生じ易く、焦
げ付きが生ずることがある。また、この様な粘性溶液に
あっては、加熱沸騰により溶液に空気（気泡）が混入し
易く、後工程で脱気等が必要になる。この様なバッチ式
溶解機でも加熱時に加圧すると、溶解時間が短縮され
る。従来のバッチ式加圧溶解機は、密閉型溶解釜内に規
定量の溶質と溶媒を入れてから、その混合液を加圧しな
がら加熱する。加圧源としては、溶媒である水の蒸気圧
を利用する。[0003] Further, since the dissolving solution in the dissolving pot is gradually used while being maintained at a high temperature, the dissolving solution to be used later is maintained at a high temperature for a long time, so that thermal degradation occurs. As a result, the physical properties may slightly differ between the use product to which the solution is added at the beginning and the use product to which the solution is added at the end. Furthermore, if the solution is highly viscous due to the physical properties of the solute or by increasing the solute concentration, such batch-wise heating may result in a solute coating on the heat source surface for a long time to dissolve. Is liable to occur and scorching may occur. Further, in such a viscous solution, air (bubbles) is easily mixed into the solution by heating and boiling, and degassing or the like is required in a later step. In such a batch type dissolving machine, when the pressure is applied during heating, the dissolving time is shortened. In a conventional batch type pressure dissolution machine, a prescribed amount of a solute and a solvent are put in a closed dissolution vessel, and then the mixed solution is heated while being pressurized. As the pressurizing source, the vapor pressure of water as a solvent is used.
【０００４】[0004]
【発明が解決しようとする課題】従来のバッチ式加圧溶
解機は、加圧源として溶媒の蒸気圧を利用できるため、
一見都合良さそうに考えられるが、実際には、次のよう
な問題点がある。１）所望とする加圧状態となるまでに
は、相当の加熱時間を必要とし、これが作業上の待ち時
間となる。２）溶解開始時に所定の加圧状態になるまで
の加圧時間と、溶解終了時に常圧に戻すまでの減圧時間
が必要であり、これらが溶解液を熱劣化させる原因とな
る。３）溶媒の蒸気圧が加圧源であるため、圧力は加熱
温度によって決まり、加圧目標値と加熱目標値を独立し
て設定できず、溶解条件選択の自由度が低い。従って例
えば沸騰により溶液に気泡が混入してしまう。The conventional batch type pressure dissolving machine can utilize the vapor pressure of the solvent as a pressure source.
At first glance it seems to be convenient, but in practice there are the following problems. 1) A considerable heating time is required until a desired pressurized state is reached, which is a waiting time in operation. 2) A pressurizing time is required until a predetermined pressurized state is obtained at the start of dissolution, and a decompression time is required until the pressure is returned to normal pressure at the end of dissolution, and these may cause thermal degradation of the solution. 3) The pressure is heated because the vapor pressure of the solvent is the source of pressure.
Determined by the temperature, the target pressurization value and the target heating value can not be set independently, and the degree of freedom in selecting the melting conditions is low. So an example
For example, boiling causes bubbles to enter the solution.
【０００５】[0005]
【課題を解決するための手段】本発明の連続式溶解装置
は、溶質と溶媒との混合液を生成する混合液生成部と、
前記混合液を加熱して溶解する密閉型の溶解槽と、この
溶解槽の出口部から送り出される前記溶解液の圧力を設
定する出力圧力調整部と、前記溶解槽の入口部に対し一
定量の前記混合液を連続的に送り込む混合液供給部と、
この混合液供給部から前記入口部へ送り込む前記混合液
の圧力を、前記出口部から送り出される溶解液の圧力よ
り高く設定して、前記溶解槽内の前記混合液に液圧を加
える入力圧力調整部とを備えてなることを特徴とする。
この場合、前記溶解槽の一つの好ましい形態は、内部の
溶液を攪拌し、且つ内壁に付着する前記溶液を掻き落と
す回転式スクレーパを内蔵する構造である。According to the present invention, there is provided a continuous dissolving apparatus, comprising: a mixed liquid generating section for generating a mixed liquid of a solute and a solvent;
A closed-type dissolving tank that heats and dissolves the mixed solution, an output pressure adjusting unit that sets the pressure of the dissolving solution sent from an outlet of the dissolving tank, and a fixed amount with respect to an inlet of the dissolving tank. A mixed liquid supply unit for continuously feeding the mixed liquid,
The pressure of the mixed liquid fed from the mixed liquid supply unit to the inlet is set higher than the pressure of the dissolved liquid sent out from the outlet, and the input pressure is adjusted to apply the liquid pressure to the mixed liquid in the dissolving tank. And a unit.
In this case, one preferable embodiment of the dissolving tank has a structure incorporating a rotary scraper for stirring the solution inside and scraping off the solution adhering to the inner wall.
【０００６】[0006]
【作用】本発明の溶解槽には、溶質と溶媒の混合液が連
続して送り込まれ、且つその溶解液が連続して送り出さ
れる。混合液の送り込み圧力が溶解槽内部に混合液に対
する液圧として加わる。この圧力は、溶媒の蒸気圧では
ないので、その目標値と加熱目標値を独立して設定でき
る。加圧しながら加熱する連続式溶解機では、加熱によ
り一定の加圧状態を得る蒸気圧による加圧方式と比べ
て、混合液に対する加熱時間は短くて済む。このため、
溶解液の熱劣化を防止できる。また、バッチ式とは異な
り必要量の溶解液を連続して得ることができる。The mixed solution of the solute and the solvent is continuously fed into the dissolving tank of the present invention, and the dissolved solution is continuously sent out. The feed pressure of the mixed solution is applied to the inside of the dissolving tank as a liquid pressure for the mixed solution. Since this pressure is not the vapor pressure of the solvent, the target value and the heating target value can be set independently. In a continuous melting machine that heats while applying pressure ,
Compared to the vapor pressure pressurization method to obtain a constant pressurized state
Thus, the heating time for the mixed solution is short. For this reason,
Thermal degradation of the solution can be prevented. Also, unlike the batch method, a required amount of the solution can be continuously obtained.
【０００７】また、溶媒の蒸気圧により加圧する方式と
異なり、加熱して得られる蒸気圧より高い加圧状態に設
定することができる。この様な圧力条件に設定すると、
沸点上昇により加熱したときの溶液沸騰を回避でき、溶
液中に気泡が混入することを防止できる。更に、このよ
うな溶解槽の内部に回転式スクレーパを内蔵させると、
内部の溶液を攪拌し、且つ内壁に付着する前記溶液を掻
き落とすことができる。加えて、短時間の溶解のため、
焦げ付きのない高濃度溶解が可能になる。[0007] Further, a method of applying pressure by the vapor pressure of the solvent and
Alternatively, the pressure can be set higher than the vapor pressure obtained by heating . Under these pressure conditions,
The boiling of the solution when heated due to the rise in boiling point can be avoided, and bubbles can be prevented from entering the solution. Furthermore, when a rotary scraper is built in such a melting tank,
The solution inside can be stirred and the solution adhering to the inner wall can be scraped off. In addition, for a short time dissolution,
High concentration dissolution without scorching becomes possible.
【０００８】[0008]
【実施例】以下、図面を参照して、本発明の実施例を説
明する。図１は、本発明の一実施例を示す連続式溶解装
置のブロック図である。この図において、１０は２層式
の密閉型溶解槽である。この溶解槽１０の内層は加熱溶
解用の溶解室１１となっている。この溶解室１１の内部
には、その内部に導入された溶液を攪拌し、且つ内壁に
付着した溶液を掻き落とす回転式のスクレーパ１２が回
転可能に支持されている。１３はこのスクレーパ１２を
回転させるモータである。溶解室１１の周囲外層には、
加熱媒体を循環させるジャケット１４が形成されてい
る。このジャケット１４は、溶解室１１とは独立した密
閉空間である。溶解室１１には、溶解しようとする混合
液を導入する入口部１５と、溶解された溶解液を導出す
る出口部１６が形成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a continuous melting apparatus showing one embodiment of the present invention. In this figure, reference numeral 10 denotes a two-layer closed type melting tank. The inner layer of the melting tank 10 is a melting chamber 11 for heating and melting. Inside the dissolution chamber 11, a rotatable scraper 12 that stirs the solution introduced therein and scrapes off the solution attached to the inner wall is rotatably supported. Reference numeral 13 denotes a motor for rotating the scraper 12. In the outer layer around the melting chamber 11,
A jacket 14 for circulating the heating medium is formed. The jacket 14 is a closed space independent of the melting chamber 11. The dissolution chamber 11 is formed with an inlet 15 for introducing a mixed solution to be dissolved and an outlet 16 for discharging the dissolved solution.
【０００９】溶解槽１０の入口部１５に対し混合液を連
続して送り込む系は、１）連続混合機２０で溶媒と溶質
を連続して混合し、その混合液を定量式ポンプ２１で一
定量ずつ送り出す系か、２）バッチ式混合機２２で溶媒
と溶質を混合した混合液を定量式ポンプ２３で一定量ず
つ送り出す系であり、いずれの系からの混合液流量も入
口部１５の手前に設置された流量調整部２４で任意に調
整することができる。この流量調整部２４は、流路に設
置された流量調整弁２４ａとその流量調整計２４ｂとか
らなる。A system for continuously feeding a mixed solution to the inlet 15 of the dissolving tank 10 is as follows: 1) A solvent and a solute are continuously mixed by a continuous mixer 20, and the mixed solution is supplied to a fixed amount by a quantitative pump 21. Or 2) a system in which a mixed solution obtained by mixing a solvent and a solute by a batch mixer 22 is sent out by a fixed amount by a fixed-quantity pump 23, and the flow rate of the mixed solution from any system is set before the inlet 15. It can be arbitrarily adjusted by the installed flow rate adjusting unit 24. The flow control unit 24 includes a flow control valve 24a installed in the flow path and a flow control meter 24b.
【００１０】溶解槽１０のジャケット１４には、温度調
整弁３１を通して蒸気が導入される。この蒸気は、加熱
専用であって、溶解室１１に送り込まれる水（溶媒）と
は独立してその温度を制御できる。溶解室１１内の温度
は温度調整計３２で制御できる。ジャケット１４の下側
には、水抜き用のドレン３３が設けられている。また、
溶解室１１の下側には清掃時等に使用する溶液排出弁３
４が設けられている。Steam is introduced into the jacket 14 of the melting tank 10 through a temperature control valve 31. This steam is used exclusively for heating, and its temperature can be controlled independently of water (solvent) sent to the melting chamber 11. The temperature in the melting chamber 11 can be controlled by a temperature controller 32. A drain 33 for draining water is provided below the jacket 14. Also,
A solution discharge valve 3 used for cleaning or the like is provided below the melting chamber 11.
4 are provided.
【００１１】溶解槽１０の出口部１６から溶解液を取り
出す系は、圧力調整弁４０を含んで構成される。この圧
力調整弁４０以降は、例えば溶解液を他の食材と混合す
る工程、或いは溶解液を冷却して凝固する工程等に引き
継がれる。The system for taking out the solution from the outlet 16 of the solution tank 10 includes a pressure regulating valve 40. After the pressure regulating valve 40, for example, a process of mixing the solution with another food material or a process of cooling and solidifying the solution is performed.
【００１２】以下、溶解槽１０を中心とした連続溶解動
作を説明する。この発明では、寒天等の溶質を水等の溶
媒に短時間で溶解させ、しかもその溶解液を連続して取
り出すことができるようにする。溶解時間を短縮するに
は、図２の加熱温度−溶解時間の特性図から明らかなよ
うに、加熱温度を高く設定すれば良い。Hereinafter, a continuous melting operation centering on the melting tank 10 will be described. In the present invention, a solute such as agar is dissolved in a solvent such as water in a short time, and the solution can be continuously taken out. In order to shorten the melting time, the heating temperature may be set higher as is clear from the heating temperature-melting time characteristic diagram in FIG.
【００１３】溶解時間は加熱時に印加する圧力にも依存
し、圧力を上昇させると溶解に要する時間は短縮され
る。例えば、寒天の場合、絶対圧力２００ｋＰａを印加
しながら加熱すると、加熱温度１２０．１°Ｃで短時間
内に溶解させることができる。この加熱、加圧溶解の条
件を連続式溶解機で実現する場合、温度については温度
調整弁３１から導入する蒸気の温度を調整することで実
現できる。また、圧力については、溶解室１１内の液圧
を圧力調整弁４０で調整することで実現できる。つま
り、定量式ポンプ２１または２３から一定の押し込み圧
力で溶解対象とする混合液を溶解室１１の入口部１５に
送り込み、そのとき出口部１６から流出する溶解液の流
量を圧力調整弁４０で送り込み量より少なく調整する
と、入口部１５と出口部１６との間に圧力差が発生し、
それが溶解室内部の液圧となる。[0013] The dissolution time also depends on the pressure applied during heating, and increasing the pressure shortens the time required for dissolution. For example, when agar is heated while applying an absolute pressure of 200 kPa, it can be dissolved at a heating temperature of 120.1 ° C. within a short time. When the conditions of heating and pressure melting are realized by a continuous melting machine, the temperature can be realized by adjusting the temperature of steam introduced from the temperature adjusting valve 31. The pressure can be realized by adjusting the liquid pressure in the dissolution chamber 11 with the pressure adjusting valve 40. That is, the mixed solution to be dissolved is sent from the fixed-quantity pump 21 or 23 at a constant pushing pressure to the inlet 15 of the melting chamber 11, and the flow rate of the solution flowing out of the outlet 16 at that time is sent by the pressure regulating valve 40. If the adjustment is made less than the amount, a pressure difference occurs between the inlet portion 15 and the outlet portion 16,
It becomes the liquid pressure inside the melting chamber.
【００１４】圧力調整系と温度調整系とは完全に独立し
た系であるので、圧力と温度をそれぞれ希望の値に設定
することができる。一例として、寒天６００ｇを１０リ
ットルの水に分散させ、この混合液を溶解室１１に導入
した。この時、混合液に加圧した絶対圧力は３００ｋＰ
ａであり、また加熱温度は１２５°Ｃであった（因みに
絶対圧力３００ｋＰａにおける水蒸気の飽和温度は１３
３．４°Ｃである）。この溶解条件を適用したところ、
６分間で寒天は完全溶解し、また溶液の劣化もないこと
が確認された。Since the pressure adjustment system and the temperature adjustment system are completely independent systems, the pressure and the temperature can be set to desired values. As an example, 600 g of agar was dispersed in 10 liters of water, and this mixed solution was introduced into the dissolution chamber 11. At this time, the absolute pressure applied to the mixture was 300 kP
a, and the heating temperature was 125 ° C. (Note that the saturation temperature of water vapor at an absolute pressure of 300 kPa was 13 ° C.
3.4 ° C). After applying these dissolution conditions,
It was confirmed that the agar was completely dissolved in 6 minutes and the solution was not deteriorated.
【００１５】高温、高圧下で寒天等の水溶性多糖類を溶
解する場合、次のような問題点がある。それは、熱媒体
に付着した溶解液が高温のために焦げ付くことである。
従来の連続式加熱機としては、パイプヒータ、プレート
ヒータ、パステライザ等が知られている。これらは、溶
液の加熱や殺菌を目的として設けられているが、溶解を
目的としていないため、溶液の焦げ付き対策は施してい
ない。When a water-soluble polysaccharide such as agar is dissolved under high temperature and high pressure, there are the following problems. That is, the solution attached to the heating medium is scorched due to the high temperature.
As a conventional continuous heater, a pipe heater, a plate heater, a pasteurizer, and the like are known. These are provided for the purpose of heating and sterilizing the solution, but are not intended for dissolution, and therefore, no measures are taken against scorching of the solution.
【００１６】図１の熱媒体はジャケット１４であるた
め、溶液が焦げ付く部分は溶解室１１の内壁である。そ
こで、溶解中は常にスクレーパ１２を回転させ、溶解室
１１の内壁を擦り、その面に付着する溶液を掻き落とし
て焦げ付きを防止する。のみならず、スクレーパ１２の
回転によって溶液全体が攪拌されるため、溶液全体が均
一に加熱される。用途によっては高濃度の溶液の溶解が
要求される。高濃度の溶解は常圧では不可能であり、加
圧しながら行う必要がある。溶液が高濃度になるほど焦
げ付きが生じ易いが、この様なスクレーパ１２を常時回
転させることで、焦げ付きを回避しながら高濃度の溶液
の溶解を行うことができる。Since the heat medium in FIG. 1 is the jacket 14, the portion where the solution is scorched is the inner wall of the melting chamber 11. Therefore, the scraper 12 is always rotated during the dissolution, and the inner wall of the dissolution chamber 11 is rubbed, and the solution adhering to the surface is scraped off to prevent scorching. In addition, since the entire solution is stirred by the rotation of the scraper 12, the entire solution is uniformly heated. Some applications require the dissolution of highly concentrated solutions. High-concentration dissolution is not possible at normal pressure and must be performed while applying pressure. The higher the concentration of the solution, the easier it is for scorching to occur. However, by constantly rotating such a scraper 12, it is possible to dissolve a highly concentrated solution while avoiding scorching.
【００１７】[0017]
【発明の効果】以上述べたように本発明によれば、必要
量の溶解液を連続して得ることができる連続式溶解装置
を提供することができる。特に、圧力の目標値と加熱目
標値を独立して設定できるので、溶解条件選択の自由度
が増し、沸騰条件ではないので気泡の混入もない。ま
た、混合液に対する加熱時間が短いため、加熱による溶
解液の熱劣化がない。更に、バッチ式とは異なり必要量
の溶解液を連続して得ることができる。加えて、溶解槽
の内部に回転式スクレーパを内蔵させると、内部の溶液
を攪拌し、且つ内壁に付着する前記溶液を掻き落とすこ
とができるので、焦げ付きのない高濃度溶解が可能にな
る。As described above, according to the present invention, it is possible to provide a continuous dissolving apparatus capable of continuously obtaining a required amount of a dissolving solution. In particular, since the target value of the pressure and the target value of the heating can be set independently, the degree of freedom in selecting the dissolving conditions is increased. Further, since the heating time for the mixed solution is short, there is no thermal deterioration of the dissolved solution due to heating. Further, unlike the batch method, a required amount of the solution can be continuously obtained. In addition, when a rotary scraper is built in the dissolution tank, the solution inside can be stirred and the solution adhering to the inner wall can be scraped off, so that high-concentration dissolution without scorching becomes possible.
【図１】 本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing one embodiment of the present invention.
【図２】 加熱温度と溶解時間の関係を示す特性図であ
る。FIG. 2 is a characteristic diagram showing a relationship between a heating temperature and a melting time.
１０…溶解槽、１１…溶解室、１２…スクレーパ、１３
…モータ、１４…ジャケット、１５…入口部、１６…出
口部、２０…連続混合機、２１，２３…定量式ポンプ、
２２…バッチ混合機、２４…流量調整部、３１…温度調
整弁、３２…温度調整計、４０…圧力調整弁。10: melting tank, 11: melting chamber, 12: scraper, 13
... Motor, 14 ... Jacket, 15 ... Inlet, 16 ... Outlet, 20 ... Continuous mixer, 21, 23 ... Material pump,
Reference numeral 22 denotes a batch mixer, 24 denotes a flow control unit, 31 denotes a temperature control valve, 32 denotes a temperature controller, and 40 denotes a pressure control valve.
Claims (2)
する混合液生成部と、 前記混合液を加熱して溶解する密閉型の溶解槽と、 この溶解槽の出口部から送り出される前記溶解液の圧力
を設定する出力圧力調整部と、 前記溶解槽の入口部に対し一定量の前記混合液を連続的
に送り込む混合液供給部と、 この混合液供給部から前記入口部へ送り込む前記混合液
の圧力を、前記出口部から送り出される溶解液の圧力よ
り高く設定して、前記溶解槽内の前記混合液に圧力を加
える入力圧力調整部と、 を備えてなることを特徴とする連続式溶解装置。1. A mixed liquid generating unit for generating a mixed liquid of a solute and a solvent to be dissolved, a closed type dissolving tank for heating and dissolving the mixed liquid, and the dissolving tank sent out from an outlet of the dissolving tank. An output pressure adjusting unit for setting the pressure of the solution; a mixed solution supply unit for continuously feeding a fixed amount of the mixed solution to the inlet of the solution tank; and An input pressure adjusting unit that sets the pressure of the mixed solution higher than the pressure of the dissolved solution sent out from the outlet portion and applies pressure to the mixed solution in the dissolving tank. Type melting equipment.
つ内壁に付着する前記溶液を掻き落とす回転式スクレー
パを内蔵する構造であることを特徴とする請求項１に記
載の連続式溶解装置。2. The continuous dissolving apparatus according to claim 1, wherein the dissolving tank has a built-in rotary scraper for stirring the solution inside and scraping off the solution adhering to the inner wall. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4360923A JP2664613B2 (en) | 1992-12-28 | 1992-12-28 | Continuous melting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4360923A JP2664613B2 (en) | 1992-12-28 | 1992-12-28 | Continuous melting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06198150A JPH06198150A (en) | 1994-07-19 |
| JP2664613B2 true JP2664613B2 (en) | 1997-10-15 |
Family
ID=18471473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4360923A Expired - Fee Related JP2664613B2 (en) | 1992-12-28 | 1992-12-28 | Continuous melting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2664613B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844141A (en) * | 2021-01-13 | 2021-05-28 | 李一峰 | Intermittent solution blending device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61106628A (en) * | 1984-10-30 | 1986-05-24 | Fuji Photo Film Co Ltd | Dissolution of cellulose acetate |
-
1992
- 1992-12-28 JP JP4360923A patent/JP2664613B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06198150A (en) | 1994-07-19 |
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