CA2215748A1 - Freeze-drying process and apparatus - Google Patents

Freeze-drying process and apparatus

Info

Publication number
CA2215748A1
CA2215748A1 CA002215748A CA2215748A CA2215748A1 CA 2215748 A1 CA2215748 A1 CA 2215748A1 CA 002215748 A CA002215748 A CA 002215748A CA 2215748 A CA2215748 A CA 2215748A CA 2215748 A1 CA2215748 A1 CA 2215748A1
Authority
CA
Canada
Prior art keywords
freeze
shell
drying process
vial
frozen material
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.)
Granted
Application number
CA002215748A
Other languages
French (fr)
Other versions
CA2215748C (en
Inventor
Dominic Michael Anthony Oughton
Philip Russell James Smith
Donald Bruce Atherton Macmichael
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.)
Wellcome Foundation Ltd
Original Assignee
The Wellcome Foundation Limited
Dominic Michael Anthony Oughton
Philip Russell James Smith
Donald Bruce Atherton Macmichael
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 claimed from GBGB9505523.2A external-priority patent/GB9505523D0/en
Application filed by The Wellcome Foundation Limited, Dominic Michael Anthony Oughton, Philip Russell James Smith, Donald Bruce Atherton Macmichael filed Critical The Wellcome Foundation Limited
Publication of CA2215748A1 publication Critical patent/CA2215748A1/en
Application granted granted Critical
Publication of CA2215748C publication Critical patent/CA2215748C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing

Abstract

A freeze-drying process includes a freezing step of rotating the vial (1) about its longitudinal axis at a speed not less than that required to maintain by centrifugal force the aqueous material to be freeze-dried in the form of a shell (7) on the inner walls of the vial (1) and then subjecting the material to freezing conditions to freeze it in the form of said shell (7). In another aspect of the invention, the freeze-drying process also includes the step of drying the shell frozen material (7), by directing heat radially inwards from a heating block (14) to the shell frozen material (7) and increasing the temperature over a time period to dry the shell frozen material (7).
CA002215748A 1995-03-18 1996-03-14 Freeze-drying process and apparatus Expired - Fee Related CA2215748C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9505523.2 1995-03-18
GBGB9505523.2A GB9505523D0 (en) 1995-03-18 1995-03-18 Lyophilization process
PCT/GB1996/000597 WO1996029556A1 (en) 1995-03-18 1996-03-14 Freeze-drying process and apparatus

Publications (2)

Publication Number Publication Date
CA2215748A1 true CA2215748A1 (en) 1996-09-26
CA2215748C CA2215748C (en) 2007-08-14

Family

ID=38434449

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002215748A Expired - Fee Related CA2215748C (en) 1995-03-18 1996-03-14 Freeze-drying process and apparatus

Country Status (1)

Country Link
CA (1) CA2215748C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3714226A4 (en) * 2017-11-22 2021-03-03 IMA Life North America Inc. Spray freeze drying on a substrate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3714226A4 (en) * 2017-11-22 2021-03-03 IMA Life North America Inc. Spray freeze drying on a substrate

Also Published As

Publication number Publication date
CA2215748C (en) 2007-08-14

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150316