GB899900A - Process for coating particles - Google Patents

Process for coating particles

Info

Publication number
GB899900A
GB899900A GB36890/60A GB3689060A GB899900A GB 899900 A GB899900 A GB 899900A GB 36890/60 A GB36890/60 A GB 36890/60A GB 3689060 A GB3689060 A GB 3689060A GB 899900 A GB899900 A GB 899900A
Authority
GB
United Kingdom
Prior art keywords
particles
velocity
gas stream
gas
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
Application number
GB36890/60A
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.)
Wisconsin Alumni Research Foundation
Original Assignee
Wisconsin Alumni Research Foundation
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 Wisconsin Alumni Research Foundation filed Critical Wisconsin Alumni Research Foundation
Publication of GB899900A publication Critical patent/GB899900A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/02—Apparatus specially adapted for manufacture or treatment of sweetmeats or confectionery; Accessories therefor
    • A23G3/20—Apparatus for coating or filling sweetmeats or confectionery
    • A23G3/2092—Apparatus for coating with atomised liquid, droplet bed, liquid spray
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
    • A23G3/343—Products for covering, coating, finishing, decorating
    • 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
    • A61K9/2893—Tablet coating processes
    • 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
    • A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5073—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals having two or more different coatings optionally including drug-containing subcoatings
    • 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
    • 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
    • B01J2/006—Coating of the granules without description of the process or the device by which the granules are obtained
    • 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
    • B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G2200/00—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF containing organic compounds, e.g. synthetic flavouring agents
    • 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
    • A61J2205/00—General identification or selection means
    • A61J2205/20—Colour codes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Public Health (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Veterinary Medicine (AREA)
  • Medicinal Chemistry (AREA)
  • Epidemiology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Combustion & Propulsion (AREA)
  • Medicinal Preparation (AREA)
  • Cosmetics (AREA)
  • Glanulating (AREA)
  • Fats And Perfumes (AREA)

Abstract

Solid particles are coated by suspending the particles as a fluidized bed in a gas stream of non-uniform upward velocity such that in one portion of the bed in which the gas stream moves with a relatively high velocity, the particles move upwards substantially out of contact with each other and in that part in which the gas stream moves with a relatively lower velocity, the particles move downwards in substantially weightless contact with each other, the coating materials being introduced into the gas stream at the lower end of the upwardly flowing part of the bed. For producing nonuniformity of gas velocity grids or screens of non-uniform aperture size or in which the "mesh" only covers a portion of the conduit may be placed in the gas conduit. These may be replaced or used in combination with movable "damper" plates. The coating compositions used may be liquids or finely-divided solids, e.g. aqueous sugar solutions and compositions comprising film-forming substances, e.g. polyvinyl alcohol, cellulose acetate phthalate and zein, natural and synthetic resins, e.g. shellac, alkyl and silicone resins, waxes and waxy materials, e.g. polyvinyl pyrrolidone, glyceryl monostearate and glyceryl monostearate, plasticizing agents, colouring agents and bulking substances, e.g. starch, talc or magnesium carbonate.ALSO:Solid particles, e.g. medicinal tablets, are coated by suspending the particles in an upwardly flowing gas stream containing coating material and causing circulation of the particles in the fluidized bed by directing the gas stream through one portion of the bed at a higher velocity than through another portion, the gas velocity being such that the particles flow upwards in the high velocity region and flow downwardly in weightless contact in the region of lower velocity, the particles p in the upward flowing region being substantially out of contact with each other. The coating materials are directed into the lower end of the upwardly flowing gas stream and for causing the variable gas flow velocity, there may be used grids or screens in which the size of the openings is not uniform or in which the mesh only partially covers the gas conduit in which they are placed beneath the fluidized bed and which may be replaced or used in combination with movable "damper" plates.
GB36890/60A 1959-11-09 1960-10-27 Process for coating particles Expired GB899900A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85149859A 1959-11-09 1959-11-09
US86106359A 1959-12-21 1959-12-21

Publications (1)

Publication Number Publication Date
GB899900A true GB899900A (en) 1962-06-27

Family

ID=27127006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36890/60A Expired GB899900A (en) 1959-11-09 1960-10-27 Process for coating particles

Country Status (9)

Country Link
BE (1) BE596861A (en)
CA (1) CA656429A (en)
CH (1) CH422725A (en)
DE (1) DE1158481B (en)
DK (1) DK102143A (en)
GB (1) GB899900A (en)
IT (1) IT638823A (en)
NO (1) NO104718L (en)
SE (1) SE314775B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207360A (en) * 1975-10-31 1980-06-10 Texas Instruments Incorporated Silicon seed production process
IT201900019547A1 (en) * 2019-10-22 2021-04-22 Emmanuele Guido FOOD PROCESSING EQUIPMENT
CN113662853A (en) * 2021-07-30 2021-11-19 柴力军 Fluidized bed coating machine for manufacturing circular particle medicines

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184459B (en) * 1962-01-20 1964-12-31 Boehringer & Soehne Gmbh Coating process
DE1265715B (en) * 1964-08-13 1968-04-11 Dow Chemical Co Continuous process for the granulation of water-soluble solids
DE1280756B (en) * 1965-06-14 1968-10-17 Glatt Werner Fluid bed tub for treatment, e.g. B. Drying, grainy good
NL191557C (en) * 1980-05-12 1995-09-19 Azote Sa Cie Neerlandaise A method for manufacturing granules built up from a core and an envelope.
US5516541A (en) * 1994-04-04 1996-05-14 Kellogg Company No dry coating process for sugar coated food products

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799241A (en) * 1949-01-21 1957-07-16 Wisconsin Alumni Res Found Means for applying coatings to tablets or the like
US2786280A (en) * 1954-03-12 1957-03-26 Ca Nat Research Council Method of contacting solid particles with fluids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207360A (en) * 1975-10-31 1980-06-10 Texas Instruments Incorporated Silicon seed production process
IT201900019547A1 (en) * 2019-10-22 2021-04-22 Emmanuele Guido FOOD PROCESSING EQUIPMENT
CN113662853A (en) * 2021-07-30 2021-11-19 柴力军 Fluidized bed coating machine for manufacturing circular particle medicines

Also Published As

Publication number Publication date
SE314775B (en) 1969-09-15
DK102143A (en)
IT638823A (en)
NO104718L (en)
BE596861A (en)
CH422725A (en) 1966-10-31
DE1158481B (en) 1963-12-05
CA656429A (en) 1963-01-22

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