CA2025764A1 - Gradual release structures made from fiber spinning techniques - Google Patents
Gradual release structures made from fiber spinning techniquesInfo
- Publication number
- CA2025764A1 CA2025764A1 CA2025764A CA2025764A CA2025764A1 CA 2025764 A1 CA2025764 A1 CA 2025764A1 CA 2025764 A CA2025764 A CA 2025764A CA 2025764 A CA2025764 A CA 2025764A CA 2025764 A1 CA2025764 A1 CA 2025764A1
- Authority
- CA
- Canada
- Prior art keywords
- active agent
- fiber
- gradual release
- fiber spinning
- structures made
- 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
Links
- 239000000835 fiber Substances 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 238000009987 spinning Methods 0.000 title 1
- 239000013543 active substance Substances 0.000 abstract 6
- 239000000463 material Substances 0.000 abstract 3
- 239000002245 particle Substances 0.000 abstract 3
- 238000002074 melt spinning Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
Classifications
-
- 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
- A23G4/00—Chewing gum
- A23G4/06—Chewing gum characterised by the composition containing organic or inorganic compounds
- A23G4/064—Chewing gum characterised by the composition containing organic or inorganic compounds containing inorganic compounds
-
- 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
- A23G4/00—Chewing gum
- A23G4/18—Chewing gum characterised by shape, structure or physical form, e.g. aerated products
- A23G4/20—Composite products, e.g. centre-filled, multi-layer, laminated
-
- 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
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
Abstract
A delivery system and a process for making the system is provided for the gradual release of an active agent. The system comprises an active agent and a wall material. The delivery system is formed by melt spinning a mixture of particles of active agent and wall material into a fiber. The fiber has a longi-tudinal dimension and a cross sectional dimension, the cross sectional dimension being no greater than about 1 mm. The fiber has an exterior surface. The particles of active agent are dispersed throughout the wall material such that the particles of active agent are gradually released from the fiber when the fiber is contacted with a solvent specific to the active agent.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41866289A | 1989-10-10 | 1989-10-10 | |
US07/418,662 | 1989-10-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2025764A1 true CA2025764A1 (en) | 1991-04-11 |
CA2025764C CA2025764C (en) | 1996-09-03 |
Family
ID=23659051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002025764A Expired - Fee Related CA2025764C (en) | 1989-10-10 | 1990-09-19 | Gradual release structures made from fiber spinning techniques |
Country Status (13)
Country | Link |
---|---|
US (1) | US5364627A (en) |
EP (1) | EP0422820B1 (en) |
JP (1) | JPH03206110A (en) |
CN (1) | CN1054368A (en) |
AT (1) | ATE123650T1 (en) |
AU (1) | AU639645B2 (en) |
CA (1) | CA2025764C (en) |
DE (2) | DE69020088T2 (en) |
DK (1) | DK0422820T3 (en) |
ES (1) | ES2073538T3 (en) |
FI (1) | FI904598A0 (en) |
NO (1) | NO904370L (en) |
NZ (1) | NZ235372A (en) |
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US4873085A (en) * | 1987-04-20 | 1989-10-10 | Fuisz Pharmaceutical Ltd. | Spun fibrous cosmetic and method of use |
US4997856A (en) * | 1987-04-20 | 1991-03-05 | Fuisz Pharmaceutical Ltd. | Method of producing compacted dispersable systems |
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JPS63295711A (en) * | 1987-05-25 | 1988-12-02 | Kuraray Co Ltd | Deodorizing polyester fiber |
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US4885175A (en) * | 1987-12-23 | 1989-12-05 | Wm. Wrigley Jr. Company | Method of making chewing gum with wax-coated delayed release ingredients |
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WO1990007859A2 (en) * | 1989-11-22 | 1990-07-26 | Wm. Wrigley Jr. Company | Method of controlling release of sucralose in chewing gum and gum produced thereby |
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WO1990007864A2 (en) * | 1990-04-25 | 1990-07-26 | Wm. Wrigley Jr. Company | Method of controlling release of clycyrrhizin in chewing gum and gum produced thereby |
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-
1990
- 1990-09-18 AU AU62639/90A patent/AU639645B2/en not_active Ceased
- 1990-09-18 FI FI904598A patent/FI904598A0/en not_active IP Right Cessation
- 1990-09-18 NZ NZ235372A patent/NZ235372A/en unknown
- 1990-09-19 CA CA002025764A patent/CA2025764C/en not_active Expired - Fee Related
- 1990-10-03 DK DK90310799.3T patent/DK0422820T3/en active
- 1990-10-03 ES ES90310799T patent/ES2073538T3/en not_active Expired - Lifetime
- 1990-10-03 DE DE69020088T patent/DE69020088T2/en not_active Expired - Fee Related
- 1990-10-03 DE DE199090310799T patent/DE422820T1/en active Pending
- 1990-10-03 AT AT90310799T patent/ATE123650T1/en not_active IP Right Cessation
- 1990-10-03 EP EP90310799A patent/EP0422820B1/en not_active Expired - Lifetime
- 1990-10-09 JP JP2272064A patent/JPH03206110A/en active Pending
- 1990-10-09 NO NO90904370A patent/NO904370L/en unknown
- 1990-10-10 CN CN90108293A patent/CN1054368A/en active Pending
-
1992
- 1992-07-21 US US07/918,897 patent/US5364627A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2073538T3 (en) | 1995-08-16 |
DE422820T1 (en) | 1991-11-28 |
US5364627A (en) | 1994-11-15 |
DK0422820T3 (en) | 1995-08-14 |
JPH03206110A (en) | 1991-09-09 |
DE69020088T2 (en) | 1996-02-01 |
FI904598A0 (en) | 1990-09-18 |
CN1054368A (en) | 1991-09-11 |
EP0422820A3 (en) | 1991-09-11 |
AU6263990A (en) | 1991-04-26 |
NO904370L (en) | 1991-04-11 |
NO904370D0 (en) | 1990-10-09 |
EP0422820A2 (en) | 1991-04-17 |
ATE123650T1 (en) | 1995-06-15 |
AU639645B2 (en) | 1993-07-29 |
NZ235372A (en) | 1992-05-26 |
DE69020088D1 (en) | 1995-07-20 |
EP0422820B1 (en) | 1995-06-14 |
CA2025764C (en) | 1996-09-03 |
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