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US3112220A - Method and apparatus for coating particles - Google Patents

Method and apparatus for coating particles Download PDF

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Publication number
US3112220A
US3112220A US11364A US1136460A US3112220A US 3112220 A US3112220 A US 3112220A US 11364 A US11364 A US 11364A US 1136460 A US1136460 A US 1136460A US 3112220 A US3112220 A US 3112220A
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US
United States
Prior art keywords
particles
coating
tablets
chamber
bed
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
Application number
US11364A
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English (en)
Inventor
Jr Albert L Heiser
Lowenthal Werner
Robert E Singiser
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.)
Abbott Laboratories
Original Assignee
Abbott Laboratories
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
Priority to GB978264D priority Critical patent/GB978264A/en
Priority to NL261652D priority patent/NL261652A/xx
Application filed by Abbott Laboratories filed Critical Abbott Laboratories
Priority to US11364A priority patent/US3112220A/en
Priority to ES0265184A priority patent/ES265184A1/es
Priority to FR853724A priority patent/FR1281704A/fr
Priority to DEA36826A priority patent/DE1205497B/de
Priority to BE604656A priority patent/BE604656A/fr
Application granted granted Critical
Publication of US3112220A publication Critical patent/US3112220A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
    • A61J3/005—Coating of tablets or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/28—Dragees; Coated pills or tablets, e.g. with film or compression coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/003—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic followed by coating of the granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/245—Spouted-bed technique
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0001—Post-treatment of organic pigments or dyes
    • C09B67/0004—Coated particulate pigments or dyes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0092—Dyes in solid form
    • C09B67/0095—Process features in the making of granulates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00—Concentrating evaporators
    • Y10S159/03—Fluidized bed

Definitions

  • the method of the present invention comprises forming a columnar bed of tablets or other particles to be coated.
  • the bed is substantially greater in height than it is in the horizontal cross-sectional dimensions.
  • An air stream is directed upwardly through a portion of this bed with suflicient force that the tablets in that portion move upwardly forming, in effect, a fluidized spout of tablets up through said portion.
  • the spout extends above the top of the bed with the tablets falling therefrom back onto the top of the bed. In the parts of the bed adjacent the spout the tablets move downwardly.
  • the coating liquid is atomized and introduced into the upwardly moving stream of air.
  • the term coating liquid is used herein to refer to liquids, liquid solutions, liquid suspensions and the like. 'Iihe atomized liquid is deposited on the tables in the upwardly moving spout with the deposited liquid being dried by the air. To some extent the air will diffuse through other parts of the bed to further the drying of the coated particles in those other parts.
  • the present method also provides the previously described advantages when it is desirable to coat particles other than tablets such as the coating of granulations, seeds, candies or the like.
  • One of the objects of the present invention is to provide an improved method and apparatus for coating tablets with a coating fluid without the need of pans or the like or the drying of the coated tablets in an oven.
  • Another object is to provide an air system method and apparatus for coating tablets whereby a uniform and smooth pattern is established for the coating and drying of the tablets and thereby reducing chipping and breaking of the tablets and providing a uniform coating on all of the tablets.
  • a further object of the present invention is to provide an improved method and apparatus for applying a plastic coating to discrete particles utilizing a liquid plastic whereby sticking of the tablets during the coating process is eliminated.
  • Still another object is to provide a method and apparatus which will coat particles fast and eificiently.
  • a still further object is to provide a method and apparatus for uniformly applying a coating fluid on solid particles in a fast and eflicient manner.
  • FIGURE 1 is a side elevational view of an apparatus for carrying out one embodiment of this invention with some portions broken away and other portions in vertical section to illustrate the pattern of the particles in the chamber.
  • FIGURE 2 is a side elevational view of a modified embodiment of a coating chamber to be used in conjunction with the apparatus in FIGURE 1.
  • FIGURES 1 and 2 describe alternative apparatus for carrying out the heretofore method that we have invented.
  • the apparatus is composed of a cylindrical colum nar chamber 1t ⁇ having an upper end open to receive an adaptable exhaust duct 11 with a thermometer 12 disposed therein.
  • Chamber 10 has a conical section 13 at its lower end with a door 14 provided therein for discharging particles 15 from chamber 10.
  • a sleeve-like joint 16 is placed around the lower end of chamber 10 for connecting chamber 10 with conical section 13.
  • Conical section 13 rests at its lower end on support block 17 which has a circular passageway 18 in axial alignment with chamber 10.
  • the diameter of conical section 13 at the point where it contacts chamber 10 as well as the diameter of the chamber itself is 6 inches.
  • conical section 13 has a diameter of 1% inches. This means that chamber 10 has a cross-sectional area approximately ten times that of conical section 13 at its narrowest dimension.
  • a screen 19 is disposed in passageway 18 for preventing particles 15 from falling out of chamber 10 when the apparatus is not in operation.
  • Support block 17 at its lower surface is in engagement with air duct 20 having an enlarged elbow portion 21 immediately below block 17 and a constricted portion '22.
  • a heat exchanger 24 Connected to constricted portion 22 is a heat exchanger 24 wherein the heating coils are connected to a steam line 25 [having a pneumatic control valve 26.
  • a condensate line 27 also is connected to exchanger 24.
  • a blower 23 is connected to heat exchanger 24 by a pipe 75.
  • a temperature sensing element 2.9 is located in elbow portion 21 and is connected to pneumatic indicating controller 30. Temperature control is effected via controller 30 and valve operator 28 which actuates valve 26 in steam line 25.
  • a Pitot tube 31 is disposed in constricting portion 22 for measuring air velocity in duct 22. Pitot tube 31 is connected by tubes 32 and 33 to manometer 34 to register the velocity thereon. Disposed in pipe is a damper 35 for controlling the amount of air from blower 23 through air duct 20.
  • pneumatic atomizing spray nozzle 36 Positioned below chamber 10 in the enlarged elbow portion 21 of air duct 20 is pneumatic atomizing spray nozzle 36 having a l i inch diameter to which is connected air line 37 attached to a source of compressed air, and a fluid supply line 38.
  • a fluid supply chamber 39 containing coating fluid 44) is connected to supply line 38.
  • a strainer 41, a needle valve 42 and a thermometer 43 are provided in fluid supply line 38.
  • a heating coil 44 Disposed in the lower portion of supply chamber 39 is a heating coil 44 having a steam line 45 with valve 46 and a condensate line 47 attached thereto.
  • Supply chamber 39 is sustained by supporting block 48 accommodating supply 3 line 38, steam line 45 and condensate line 47 therethrough.
  • An inlet pipe 49 with valve 50 and funnel 51 is disposed in communication with the upper portion of supply chamber 39 and is secured in cover member 52.
  • a nitrogen supply line 53 with valve 54 is disposed in the same manner as inlet pipe 49.
  • the modified device of FIGURE 2 is composed of a cylindrical chamber 55 and like chamber 10 of FIGURE 1 has its upper end open to receive an adaptable exhaust duct 56 having a thermometer 57 disposed therein.
  • Chamber 55 has at its lower end an oblique conical section 58 with one side perpendicular to the base of the cone.
  • a door 59 is provided in conical section 58 for discharging particles 60 from chamber 55.
  • a sleeve-type joint 61 is placed around lower end of chamber 55 for connecting chamber 55 with conical section 58.
  • Oblique conical section 58 rests at its lower end on support block 62 which has a circular passageway 63 in vertical alignment with chamber 55.
  • a screen 64 is provided in pas sageway 63 for preventing particles 60 from falling out of chamber 55 when the apparatus is not in operation.
  • Support block 62 at its lower surface is in engagement with air duct 65 which is similar to air duct 20 in the apparatus of FIGURE 1.
  • Air duct 65 serves as a housing for spray nozzle 66 to which is connected fluid supply line 67 and an air line 68 for compressed air.
  • the dimensions of the modified device are the same as those given for the preferred apparatus.
  • EXAMPLE I On method of coating particles in the apparatus in FIGURE 1 is carried out by closing all the valves in the apparatus with the exception of valve 50 and introducing a diluted coating suspension through funnel 51 and inlet pipe 49 into fiuid supply chamber 39.
  • the coating suspension employed herein is of a yellow color and has the following formula:
  • the cellulose acetate phthalate is dissolved in 200 ml. of acetone and to this mixture is added the propylene glycol and the sorbitan monooleate.
  • the yellow dye, titanium dioxide, saccharin and ethyl vanillin are added to a ball mill and sufiicient acetone is added to cover balls.
  • the milled ingredients are added to the previously described mixture.
  • the polyethylene glycol is melted in a portion of the alcohol and is also added to the previously composed mixture together with the remainder of the alcohol. Acetone is subsequently added to bring the suspension to a total volume of 1000 ml.
  • the coating suspension Prior to the introduction of the coating suspension into chamber 39', it is diluted with two liters of acetone to give a total volume of 3 liters and the diluted suspension pro-warmed to a temperature range of 4045 C.
  • valve 50 is closed to make a closed unit and steam is supplied through steam line 45 sufficient to bring the coating fluid 40 to a slow rolling boil which is a temperature of about 55 C.
  • valve 54 is opened and nitrogen under a pressure of 5-7 p.s.i. is introduced through line 53 into supply chamber 39.
  • a source of compressed air is attached to air line 37 at a pressure of approximately 25 p.s.i.
  • Exhaust duct 11 is removed from the top of chamber and 4 kg. of tablets are placed in the chamber.
  • the tablets employed in. this particular instance are ovaloid in shape having a width of approximately .205 inch, a length of about .388 inch and compressed so that 10 tablets equal 1.56 g. Exhaust duct 11 is subsequently replaced.
  • Pneumatic indicating temperature controller 30 is set at a control point of 140145 F. and it automatically adjusts pneumatic control valve 26 to provide the desired temperature range in air duct 20. The temperature is shown on indicating controller 30.
  • Blower 23 is then turned on and damper 35 is adjusted to a position that tablets 15 in chamber 10 assume a uniform pattern as indicated by the arrows and which will be explained more fully later.
  • needle valve 42 is opened and with compressed air as previously described flowing through air line 37, coating suspension 40 is sprayed by means of nozzle 36 into conical section 13 and chamber 10.
  • Coating suspension 40 is applied at such a rate that the temperature of the air leaving chamber 10 by way of exhaust duct 11 and as indicated by thermometer 12 does not fall below F. The rate should also be suflicient that the coating suspension 40 is applied in approximately a 15-minute period.
  • screen 19 is of 8 mesh size so as to allow the maximum amount of air to enter chamber 10 and yet prevent tablets 15 from falling into air duct 20.
  • tablets 15 during the previously described process assume a spouting effect.
  • tablets 15 are carried by means of the air pressure from duct 20 and also from nozzle 36 substantially vertically upward through the tablet bed at a relatively high velocity through a minor portion of the bed and to form a spout therein.
  • the upwardly carried tablets 15 rise to a height of about 5-6 inches above the major more dense portion of the bed to form a fountain-like effect and then fall outwardly and downwardly to form the major portion.
  • the tablets 15 form the major portion of the bed they move at a relatively low velocity downwardly and toward the minor spout portion at all levels along the spout and the cycle is repeated.
  • valve 42 When the coating operation is completed, valve 42 is closed, the steam is turned 011 in steam line 45 of coating chamber 39.
  • the tablets 15 are continued in the patterned motion for purposes of drying until the temperature indicated by thermometer 12 reaches about F.
  • the steam in steam line 25 for heating the air in air duct 20 is turned off and the tablets are continued in the patterned motion for about 5-10 minutes more to elfect suflicient drying.
  • an increase in temperature will be noted after all of the acetone has evaporated. An increase in temperature can cause sticking and in order to prevent such, it is desirable to stop the drying operation or to introduce cold water into heat exchanger 34 and thereby provide a source of cool air in air duct 20.
  • fluid supply chamber 39, fluid supply line 38 and nozzle 5 EXAMPLE H 36 can be cleaned with a solvent such as acetone.
  • FIGURE 2 for carrying out a modified This example illustrates 24 representative runs employembodiment of the present invention is operated substang a us plas c Coa ing S HtiOIIS, and employing partially the same as that described in the procedure in opi l f various sizes, amounts and im Th erating the apparatus of FIGURE 1.
  • the m in differen 10 components of the various formulae employed are given in between the two methods is that a modified pattern is em- Table I and th ata f r the ru s iS giv n in Ta le II. In ployed while coating and drying tablets 60.
  • the pattern runs 1-22 the center-spout pattern described in Example employed as shown by the arrows is in eifect a side-spou I and shown in FIGURE 1 of the drawings is employed. rather than the center-spout previously employed in In the case of run 1 a 10-inch diameter column is used in FIGURE 1.
  • the side-spout efiect is accomplished by 15 place of the 6-inch diameter and in runs 3 and 4 a 15-inch utilizing an oblique conical section 58 at the bottom of diameter column is utilized.
  • Runs 23 and 24 employ the chamber 55 and vertically aligning nozzle 66 near the side-spout pattern previously described and shown in perpendicular side of conical section 58. This arrange- FIGUREZ of the drawing.
  • shaped tablets having a length of .4022 inch, a width of .2260 inch and ten of which weigh 2.19 g. are coated with a bright lemon yellow solution as represented by coating Formula Number 1 of Table I modified in that 750 ml. acetone is used in diluting 1250 ml. of the concentrated coating solution.
  • Two liters of this formulation are employed into which is placed 200 g. of powdered sugar, 200 mesh.
  • the coating solution with the sugar suspended therein is applied over a period of 19 minutes with a drying time of 4 minutes.
  • the temperature of the solution is 64 C. while the air inlet temperature is 137 F. and the air outlet temperature is 110 F. Pressure on the solution is 8 p.s.i. and 22 psi. through the nozzle.
  • This procedure provides a method for building up a tablet and also smoothing over rough edges and corners to give an elegantly appearing product.
  • formulations containing cellulose acetate phthalate such as those described in US. 2,881,085 can be employed in this invention by diluting the formulations given therein in the range of one part coating solution to /2-2 parts acetone.
  • acetone instead of diluting with acetone to 500 m1., dilute with acetone to 1000 ml.
  • other solvents such as alcohol, isopropanol, methylethylketone and mixtures thereof can be employed.
  • cellulose esters of lower aliphatic monocarboxylic acids can be substituted as well as lower alkylmethacrylates, copolymers of lower alkylacylates with lower alkylmethacrylates and copolymers of lower alkylmethacrylates with methylacrylic acid, and also a polyvinylpyrrolidone-vinyl acetate copolvmer.
  • the conventional aqueous sugar-coating solutions containing cane sugar as represented by a 25-50% concentration and commonly known as simple syrup can be applied in the manner previously described in applying the plastic resin coating fluid.
  • the pressure range on fluid in fluid supply chamber 39 can vary from about 0-25 p.s.i.; the air pressure on spray nozzles 36 and 66 can vary from about 20 to 70 p.s.i.
  • the heating coil 44 for heating fluid 40 need not be utilized.
  • the heating coils in heat exchanger 34 need not be employed or can be regulated so that a temperature as high as 200 F. can be attained in coating chambers 10 and 55, depending upon the coating material used, application rate, air velocity, etc.
  • the application rate can also vary depending on the previously mentioned factors from a fraction of an hour to an hour or more.
  • the tablets may be pre-warmed before placement in the coating chamber or they can be pre-warmed therein by allowing warmed air at the desired temperature to flow through the chamber without the previously described pattern being formed.
  • FIGURE 1 a Pitot tube 31, connecting tubings 32 and 33 and a manometer 34 are described.
  • This apparatus is not essential in operating the coating apparatus of the present invention and is employed to measure air velocity where the pattern or tablets in the bed cannot be easily visualized. By knowing the velocity of the air, the weight, shape, and size of the particles and the dimensions of the coating chamber, the speed of the blower can be regulated to give the desired spouting effect.
  • the distance the particles rise above the tablet bed in forming the fountain-like eifect will vary according to whether the tablets are dry or wet (all other factors being the same). When wet, the particles rise higher and when dry, lower. This is probably due to the fact that friction is reduced when the surfaces of the tablets are Wet.
  • a method or" coating particles of a columnar bed of particles comprising the steps of: providing a columnar bed of particles, said columnar bed of particles consisting of a vertically extending major portion and a vertically extending minor portion, said minor portion being substantially smaller than said major portion, directing a stream of gas upwardly through said columnar bed of particles to form an upwardly moving spout of particles so that said minor portion of said columnar bed of particles spouts upwardly, only said minor portion being supported by said stream of gas, the uppermost particles of said upwardly spouting minor portion being carried upwardly beyond the columnar bed and outwardly of said minor portion of said columnar bed and then falling downwardly onto the major portion of said columnar bed, said major portion of said columnar bed moving downwardly as particles of said major portion enter said minor portion and are spouted upwardly by said stream of gas, and introducing an atomized coating liquid along with said stream of gas into said minor portion of said columnar bed, whereby said particles of said minor portion are coated and the stream of

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Pharmacology & Pharmacy (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Medicinal Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Epidemiology (AREA)
  • Glanulating (AREA)
  • Medicinal Preparation (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
US11364A 1960-02-26 1960-02-26 Method and apparatus for coating particles Expired - Lifetime US3112220A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB978264D GB978264A (es) 1960-02-26
NL261652D NL261652A (es) 1960-02-26
US11364A US3112220A (en) 1960-02-26 1960-02-26 Method and apparatus for coating particles
ES0265184A ES265184A1 (es) 1960-02-26 1961-02-24 Metodo y aparato para revestir particulas
FR853724A FR1281704A (fr) 1960-02-26 1961-02-24 Procédé et appareil pour l'enduisage de particules ou de tablettes à partir d'un fluide
DEA36826A DE1205497B (de) 1960-02-26 1961-02-27 Verfahren zum Auftragen eines UEberzugs auf feinverteilte diskrete, vorzugsweise zerbrechliche Teilchen
BE604656A BE604656A (fr) 1960-02-26 1961-06-06 Procédé et appareil pour l'enduisage de particules ou de tablettes à partir d'un fluide.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11364A US3112220A (en) 1960-02-26 1960-02-26 Method and apparatus for coating particles

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US3112220A true US3112220A (en) 1963-11-26

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US11364A Expired - Lifetime US3112220A (en) 1960-02-26 1960-02-26 Method and apparatus for coating particles

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US (1) US3112220A (es)
DE (1) DE1205497B (es)
ES (1) ES265184A1 (es)
GB (1) GB978264A (es)
NL (1) NL261652A (es)

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231413A (en) * 1960-09-28 1966-01-25 Potasse & Engrais Chimiques Method and apparatus for granulating melted solid and hardenable fluid products
US3241520A (en) * 1964-10-19 1966-03-22 Wisconsin Alumni Res Found Particle coating apparatus
US3251337A (en) * 1963-07-16 1966-05-17 Robert E Latta Spiral fluidized bed device and method for coating particles
US3253944A (en) * 1964-01-13 1966-05-31 Wisconsin Alumni Res Found Particle coating process
US3256111A (en) * 1964-12-04 1966-06-14 Abbott Lab Method for coating tablets
US3284230A (en) * 1963-01-04 1966-11-08 Westinghouse Electric Corp Method of doping tungsten oxide
US3329506A (en) * 1966-01-24 1967-07-04 Hupp Corp Method for roasting coffee and similar particulate solids
US3345181A (en) * 1966-01-24 1967-10-03 Hupp Corp Method for roasting coffee beans and similar particulate solids
US3354863A (en) * 1963-10-28 1967-11-28 Dow Chemical Co Apparatus for coating particulate materials
US3361631A (en) * 1963-09-30 1968-01-02 Sandoz Ag Method of sugar coating pharmaceutical tablets
US3379554A (en) * 1964-04-21 1968-04-23 Merck & Co Inc Spray coating of pharmaceutical cores with a carboxylvinyl polymer and polyethylene glycol
US3382093A (en) * 1965-11-22 1968-05-07 Battelle Development Corp Fluidized bed coating of fragile bodies
US3383236A (en) * 1964-04-17 1968-05-14 Merck & Co Inc Continuous pharmaceutical film coating process
US3385199A (en) * 1966-01-24 1968-05-28 Hupp Corp Fluid-solids contact apparatus
US3408920A (en) * 1966-01-24 1968-11-05 White Consolidated Ind Inc Apparatus for roasting coffee and the like
US3443621A (en) * 1966-03-02 1969-05-13 Progil Apparatus for the granulation of fluid products
US3476588A (en) * 1964-10-20 1969-11-04 Ile De France Process for coating tablets
US3538214A (en) * 1969-04-22 1970-11-03 Merck & Co Inc Controlled release medicinal tablets
US3539380A (en) * 1968-01-08 1970-11-10 Upjohn Co Methylcellulose and polyalkylene glycol coating of solid medicinal dosage forms
US3662474A (en) * 1969-08-27 1972-05-16 Calmic Eng Co Ltd Dryers and method of operation
US3667423A (en) * 1968-12-06 1972-06-06 Nuclear Fuel Services Metal vapor coating apparatus
US3716020A (en) * 1970-09-29 1973-02-13 Stamicarbon Apparatus for coating granules with a thin dense layer
US3769041A (en) * 1970-10-02 1973-10-30 Nat Can Corp Method of dyeing protein seed particles
US3793740A (en) * 1971-06-18 1974-02-26 Struthers Scient Int Corp Fluidized bed process
US3880116A (en) * 1974-02-14 1975-04-29 Arnar Stone Lab Particle coating apparatus
US3906086A (en) * 1971-07-19 1975-09-16 Richard G Powers Timed-release aspirin
US3940514A (en) * 1969-05-09 1976-02-24 Rank Xerox Ltd. Method of coating electrostatographic carrier particles
US3949097A (en) * 1973-08-25 1976-04-06 Mathias Stemmler Process and apparatus for coating food articles
US3949096A (en) * 1974-07-31 1976-04-06 Scm Corporation Spray drying process for encapsulation of condiment particles
US4118218A (en) * 1975-06-16 1978-10-03 Imperial Chemical Industries Limited Formulation process
US4223006A (en) * 1977-12-08 1980-09-16 Beecham Group Limited Coated particles
US4244776A (en) * 1978-03-11 1981-01-13 Hoechst Aktiengesellschaft Fluidized bed treatment of granular potassium sorbate
US4259925A (en) * 1978-10-24 1981-04-07 Kernsforschungsanlage Julich GmbH Fluidized bed reactor
US4704298A (en) * 1986-07-31 1987-11-03 The Research Foundation Of State University Of New York Coating spherical objects
US4858552A (en) * 1986-03-19 1989-08-22 Glatt Gmbh Apparatus pelletizing particles
US5211985A (en) * 1991-10-09 1993-05-18 Ici Canada, Inc. Multi-stage process for continuous coating of fertilizer particles
US5254168A (en) * 1992-06-04 1993-10-19 Howard Littman Coating apparatus having opposed atomizing nozzles in a fluid bed column
US6312521B1 (en) 1998-12-14 2001-11-06 Primera Foods Corporation Apparatus and process for coating particles
US6410087B1 (en) * 1999-11-01 2002-06-25 Medical Carbon Research Institute, Llc Deposition of pyrocarbon
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JPS5921650B2 (ja) * 1979-11-29 1984-05-21 東洋エンジニアリング株式会社 造粒方法
NL191557C (nl) * 1980-05-12 1995-09-19 Azote Sa Cie Neerlandaise Werkwijze voor het vervaardigen van uit een kern en een omhulling opgebouwde korrels.
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US3361631A (en) * 1963-09-30 1968-01-02 Sandoz Ag Method of sugar coating pharmaceutical tablets
US3354863A (en) * 1963-10-28 1967-11-28 Dow Chemical Co Apparatus for coating particulate materials
US3253944A (en) * 1964-01-13 1966-05-31 Wisconsin Alumni Res Found Particle coating process
US3383236A (en) * 1964-04-17 1968-05-14 Merck & Co Inc Continuous pharmaceutical film coating process
US3379554A (en) * 1964-04-21 1968-04-23 Merck & Co Inc Spray coating of pharmaceutical cores with a carboxylvinyl polymer and polyethylene glycol
US3241520A (en) * 1964-10-19 1966-03-22 Wisconsin Alumni Res Found Particle coating apparatus
US3476588A (en) * 1964-10-20 1969-11-04 Ile De France Process for coating tablets
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US3382093A (en) * 1965-11-22 1968-05-07 Battelle Development Corp Fluidized bed coating of fragile bodies
US3345181A (en) * 1966-01-24 1967-10-03 Hupp Corp Method for roasting coffee beans and similar particulate solids
US3329506A (en) * 1966-01-24 1967-07-04 Hupp Corp Method for roasting coffee and similar particulate solids
US3385199A (en) * 1966-01-24 1968-05-28 Hupp Corp Fluid-solids contact apparatus
US3408920A (en) * 1966-01-24 1968-11-05 White Consolidated Ind Inc Apparatus for roasting coffee and the like
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US3539380A (en) * 1968-01-08 1970-11-10 Upjohn Co Methylcellulose and polyalkylene glycol coating of solid medicinal dosage forms
US3667423A (en) * 1968-12-06 1972-06-06 Nuclear Fuel Services Metal vapor coating apparatus
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US3940514A (en) * 1969-05-09 1976-02-24 Rank Xerox Ltd. Method of coating electrostatographic carrier particles
US3662474A (en) * 1969-08-27 1972-05-16 Calmic Eng Co Ltd Dryers and method of operation
US3716020A (en) * 1970-09-29 1973-02-13 Stamicarbon Apparatus for coating granules with a thin dense layer
US3769041A (en) * 1970-10-02 1973-10-30 Nat Can Corp Method of dyeing protein seed particles
US3793740A (en) * 1971-06-18 1974-02-26 Struthers Scient Int Corp Fluidized bed process
US3906086A (en) * 1971-07-19 1975-09-16 Richard G Powers Timed-release aspirin
US3949097A (en) * 1973-08-25 1976-04-06 Mathias Stemmler Process and apparatus for coating food articles
US3880116A (en) * 1974-02-14 1975-04-29 Arnar Stone Lab Particle coating apparatus
US3949096A (en) * 1974-07-31 1976-04-06 Scm Corporation Spray drying process for encapsulation of condiment particles
US4118218A (en) * 1975-06-16 1978-10-03 Imperial Chemical Industries Limited Formulation process
US4223006A (en) * 1977-12-08 1980-09-16 Beecham Group Limited Coated particles
US4244776A (en) * 1978-03-11 1981-01-13 Hoechst Aktiengesellschaft Fluidized bed treatment of granular potassium sorbate
US4259925A (en) * 1978-10-24 1981-04-07 Kernsforschungsanlage Julich GmbH Fluidized bed reactor
US4858552A (en) * 1986-03-19 1989-08-22 Glatt Gmbh Apparatus pelletizing particles
US4704298A (en) * 1986-07-31 1987-11-03 The Research Foundation Of State University Of New York Coating spherical objects
US5211985A (en) * 1991-10-09 1993-05-18 Ici Canada, Inc. Multi-stage process for continuous coating of fertilizer particles
US5395449A (en) * 1991-10-09 1995-03-07 Ici Canada, Inc. Apparatus and process for coating particles
US5399186A (en) * 1991-10-09 1995-03-21 Ici Canada, Inc. Apparatus and process for coating particles
US5254168A (en) * 1992-06-04 1993-10-19 Howard Littman Coating apparatus having opposed atomizing nozzles in a fluid bed column
US6312521B1 (en) 1998-12-14 2001-11-06 Primera Foods Corporation Apparatus and process for coating particles
US6410087B1 (en) * 1999-11-01 2002-06-25 Medical Carbon Research Institute, Llc Deposition of pyrocarbon
DE102017129763A1 (de) 2017-12-13 2019-06-13 Universität Hamburg Verfahren und Vorrichtung zur Beschichtung eines einzelnen Partikels
WO2019114891A2 (de) 2017-12-13 2019-06-20 Universität Hamburg Verfahren und vorrichtung zur beschichtung eines einzelnen partikels

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DE1205497B (de) 1965-11-25
ES265184A1 (es) 1961-05-16
NL261652A (es)

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