EP1600534A1 - Procédé pour la fabrication de fibres composites du type âme-gaine - Google Patents

Procédé pour la fabrication de fibres composites du type âme-gaine Download PDF

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Publication number
EP1600534A1
EP1600534A1 EP04012575A EP04012575A EP1600534A1 EP 1600534 A1 EP1600534 A1 EP 1600534A1 EP 04012575 A EP04012575 A EP 04012575A EP 04012575 A EP04012575 A EP 04012575A EP 1600534 A1 EP1600534 A1 EP 1600534A1
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EP
European Patent Office
Prior art keywords
fiber
containers
core
materials
filling
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.)
Withdrawn
Application number
EP04012575A
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German (de)
English (en)
Inventor
Gong Room 2A Block 2 Wenzhong
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.)
Shenzhen Yang Qian Material Application Technology Co Ltd
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Shenzhen Yang Qian Material Application Technology Co Ltd
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Priority to EP04012575A priority Critical patent/EP1600534A1/fr
Publication of EP1600534A1 publication Critical patent/EP1600534A1/fr
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/34—Core-skin structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process

Definitions

  • the present invention relates to a process for filling a hollow portion of a hollow filaments with filling materials composed of functional material, and more particularly to a method for filling a hollow portion of a hollow fiber of which only parts or ends are submerged in the filling materials.
  • the traditional processes of making core-sheath fiber comprise composite spinning method.
  • a high temperature or a special solvent is necessary.
  • functional materials particularly drugs, fragrance, and biochemical materials
  • Chinese patent application Publication No. CN1225960 discloses an immersion method, in which porous hollow fiber is immersed in a solution of functional materials, thus the fragrance with a low boiling point can be filled into the hollow fiber.
  • U.S. Pat. No. 6,021,822 Chinese application publication No. CN1198196, and the cited references thereof, also disclose a method for encapsulating functional materials into porous hollow fiber using the immersion process, thus many kinds of functional materials with temperature sensitive cannot be composite with the hollow fiber using these processes.
  • most areas of the hollow fiber, and even all of the length of the hollow fiber should be formed communication pores. Washing is also necessary after filling the hollow fiber to remove the remained functional materials and auxiliary materials on the surface of the fiber.
  • U.S. Pat. No. 5,538,735 and Chinese application Publication No. CN1108583 disclose a method of filling drugs or film forming materials into the hollow portion of the fiber using vacuum facilities, comprises the steps of: submerging the fibers in a liquid containing the drugs or film forming materials, placing the submerged fibers in a vacuum chamber, drawing air out of the void of the fiber by withdrawing the air in the vacuum chamber, and drawing the liquid into the void by allowing the air pressure in the vacuum chamber return to the ambient pressure.
  • Some drugs or film forming materials can be incorporated in the hollow portion of the fiber at a room temperature.
  • U.S. Pat. No. 4,017,030 discloses a device comprising an elongated capillary conduit having one closed end for absorbing a flower-like odor or insecticide from an open ends thereof by capillary action, thus the follower-like odor or insecticide being incorporated in the device to be released as vapors.
  • a liquid with a low viscosity can be filled, or the length of the hollow fiber to be filled is limited.
  • this device will not be suitable.
  • the process of manufacturing composite fiber is not finished only after the functional materials are incorporated into the hollow portion of the hollow fiber.
  • a subsequent chemical or physical treatment is necessary to cause physical change or chemical reaction of the filled functional materials or auxiliary materials.
  • Such treatments include curing or gelatinizing the functional materials and auxiliary materials in the hollow portion, thus forming precipitation in the hollow portion or coating at the inner wall of the fiber, and etc.
  • the subsequent treatments cannot be performed without washing the surface of the fiber.
  • the functional materials and auxiliary materials filled in the hollow fiber will be easily lost or destroyed during washing, and the property imparted by the functional materials will become reduced in storage or in use since the communicating pores or open ends of the fiber are not sealed yet.
  • filling function materials using capillarity action not only the filled materials and the length of the fiber are limited, but also the liquid filled in the hollow portion will move during post treatments since one end of the fiber is open, therefore, some segments in the hollow portion of the fiber are out of filling material, and forms voids without filling materials. As a result, a uniformly filled fiber cannot be produced.
  • the methods described as above can just be applicable when no post treatment is necessary after the functional materials and auxiliary materials are incorporated in the hollow fiber. Moreover, the kinds of functional and auxiliary materials, and the length of the fiber to be filled are limited.
  • a main object of the present invention is to provide a process of manufacturing core-sheath composite fiber, wherein most of outer surface of the fiber does not contact filling materials, thus keeping clear.
  • a process of manufacturing core-sheath composite fiber of the present invention comprises the steps of: preparing hollow fiber in a form of filament of which some parts form communicating pores from an outer surface of the fiber to a hollow portion thereof, or in a form of filament segment with open ends; sealing adjacent porous parts or open ends of the same filament respectively in pressure containers and vacuum containers; adding filling materials into pressure containers, and keeping the porous parts or open ends completely immersed in the filling materials; pressurizing the pressure containers using compressed gas, and evacuating the vacuum containers, then the filling materials being absorbed through the communicating pores or opens into the hollow portion of the fiber.
  • FIG. 1 is a schematic diagram of an arrangement for manufacturing core-sheath composite fiber.
  • FIG. 1 shows a process of filling a fiber 1 with a filling material 5 composed of functional materials.
  • the fiber 1 in this embodiment can take a form of filament or filament segment.
  • the fiber 1 has a hollow portion therein.
  • Parts 7 are the porous areas of the fiber 1 in the form of filament, and define communicating pores 1' from outer surface to the hollow portion.
  • Each two adjacent parts 7 are longitudinally spaced at a predetermined distance.
  • Each part 7 defines one or more than one pores therein. If the fiber 1 is in a form of filament segment, it will be open at each end thereof, hereinto, 1' designates the opens at the ends, and 7 designates the ends.
  • the pressure container 2 includes a pressure container 2 with an input port 4 of compressed gas and an inlet/outlet 6 of filling materials, and a vacuum container 2' with an output port 4' of air for vacuum pumping and an inlet/outlet 6.
  • the pressure containers 2 and vacuum containers 2' are discommunicated each other during the process of filling in the present invention. It is understood that more or less containers 2, 2' may be used according to the length or the form of the hollow fiber to be filled.
  • the filling material 5, in a form of gas, liquid, solution, emulsion, or suspension, is composed of functional materials and auxiliary materials if desired, and can be introduced into the pressure container 2 via inlet 6.
  • Predetermined segments of the hollow fiber 1 are sealed in the containers 2, 2' using sealing gum 3, 3', leaving other segments of the hollow fiber 1 without pores or opens outside the containers 2, 2', so that the porous parts or the open ends 7 thereof are positioned in containers 2, 2' and extend to the bottom of the containers 2, 2'.
  • each two adjacent porous parts 7 are respectively located in one pressure container 2 and one vacuum container 2'.
  • the two ends of the fiber 1 in the form of filament segment are respectively located in one pressure container 2 and one vacuum container 2'.
  • the parts or ends 7 in containers 2 are completely submerged in the filling materials 5.
  • the container 2 is pressurized using compressed gas, and the container 2' is evacuated, thereby the filling materials 5 is filled through the communicating pores or opens 1' into the hollow portion of the fiber 1. Thereafter, the segments of the fiber 1 outside the containers 2, 2' undergo chemical or physical treatment if necessary. Then, the core-sheath composite fiber is obtained. Mass production is possible when the filling process is repeated, or proper sealing methods in art are used.
  • the hollow fiber 1 used in the present invention can be made of polymer or inorganic materials, such as polypropylene, polyester, polyamide.
  • the hollow fiber 1 may take a form of a filament or multifilament with a single hole or multi-holes, which may be located in fiber products, or other appropriate materials.
  • the fiber may contain an anti-static agent, fluorescent whiteness enhancer, stabilizer, anti-oxidant agent, flame-retardant agent, catalyst, anti-coloring agent, heat resistant agent, coloring agent, and organic or inorganic particles etc. Surface of the fiber can be smooth, or be in a regular or irregular shape.
  • the hollow fiber 1 can be produced by any publicly known techniques, and the method to produce communicating pores 1' from the surface to the hollow portion of the fiber 1, or to produce the opens 1' at the ends of the fiber 1, includes various chemical or physical methods, such as the methods described in U.S. Pat. No. 5,538,735 and Chinese Pat. Publication No. CN1063805.
  • the functional materials of the present invention are inorganic functional materials, organic functional materials, biological activity materials, pharmaceuticals, and fragrance etc., which can become liquid, solution, emulsion, or suspension using physical or chemical treatments.
  • various functional pigment, field reactive materials, biologic enzyme and cell, Western medicine or Chinese traditional medicine, and olein extracted from of animals or plants may be used.
  • the auxiliary materials of the present invention can help the functional materials to perform the functional property thereof, and help to manufacture the functional fiber.
  • Such auxiliary materials can dissolve, emulsify, or disperse the functional materials.
  • the auxiliary materials comprise organic or inorganic materials, or materials with biological activity, for instance, solvent, surfactants, monomer, polymer, initiator, catalyst, organic or inorganic filler, etc.
  • the auxiliary material can act as the solvent of the functional material to liquefy, emulsify, or disperse the same, act as a filler or framework material to fix the functional materials in the hollow portion of the hollow fiber 1, act as carrier which will be removed by chemical or physical methods after the functional materials are delivered into the hollow portion therewith, act as protective substance for the functional materials to protect the functional property of the same from being reduced during manufacturing, storage, or application of the composite fiber, and act as activating agent or control component for the functional property of the functional materials.
  • One or more than one kinds of auxiliary materials may be used to produce composite fiber of the present invention.
  • the sealing material 3, 3' of the present invention can be, for example, natural gum or synthetic gum, including reactive gum, solvent gum, emulsion gum, thermoplastic gum.
  • the sealing gum 3, 3' can well seal the fiber 1 in the containers 2, 2', and is well solvent resistant, acid and alkali resistant, and oil resistant.
  • the kinds of the sealing gum 3, 3' may be the same or not.
  • the filling materials 5 composed of functional materials and auxiliary materials is incorporated through the communicating pores or opens 1' into the hollow portion of the fiber 1 to form the core, under a pressure difference between the two adjacent parts 7 with communicating pores in a form of filament, or under a pressure difference between ends 7 with opens 1' of the same fiber 1 in a form of filament segment.
  • the time necessary for the filling materials 5, to completely transfer into the hollow portion of a hollow fiber can be reduced when the pressure during filling is increased through choosing proper sealing gum 3, 3' and sealing method, or a proper auxiliary materials are used for reducing the viscosity of the filling materials 5.
  • the system for filling the fiber 1 as shown in FIG. 1 can be heated to melt some special functional materials, or be cooled for liquefying some special functional materials being gaseous at normal temperature and pressure, thereby, various special functional materials can be incorporated with the hollow fiber to form the core-sheath structure using the process of the present invention.
  • the process of manufacturing composite fiber with a core-sheath structure comprises the steps of:
  • Example 1 describes the method of manufacturing a core-sheath fluorescent fiber.
  • the hollow fiber 1 can be produced by any publicly known techniques, for example, by the method described in Chinese Pat. Publication No. CN1063805.
  • the fiber 1 is made from 100D/24F polyester, and a hollowness ratio thereof is 25%.
  • the length between two adjacent parts 7 of the same fiber 1 is about 3 meters, and there are three parts 7 in total in this example.
  • Each part 7 defines communicating pores 1' from the surface to the hollow portion.
  • the communicating pore 1' has a width of 0.5-2 ⁇ m, and a length of each porous part 7 is in a range of 5 to 20 ⁇ m.
  • Fifty 100D/24F multifilaments are used as a multifilament bundle with their porous parts 7 being arrayed.
  • step (2) of preparing sealing gum 3, 3' wherein 30 parts industrial gelatine by weight and 30 parts glycerin by weight are dissolved in 75 parts hot water by weight at a temperature of 60 degrees centigrade.
  • the sealing gum is obtained, maintaining the temperature of the same at a range of 50 to 60 degrees centigrade.
  • a step (4) of preparing liquid 5 3-6wt.% of Benzoin aether, and 0.01-0.1wt.%, preferably 0.05-0.08wt.% of fluorescent dye Rhodamine 6G are completely dissolved in tri(ethylene glycol) dimethacrylate, thus forming liquid 5 composed of functional dye and auxiliary materials, wherein the weight percents are relative to the total weight of tri(ethylene glycol) dimethacrylate.
  • step (5) liquid 5 of step (4) is added into one container 2 as shown in FIG. 1 through the inlet 6 thereof, and the porous part 7 are completely submerged in the liquid 5 in the container 2 during filling.
  • step (6) of filling compressed air is introduced into the container 2 through the input port 4 thereof till the pressure inside the container 2 gets to 2 X 10 5 Pa, while the other two containers 2' at both sides of the container 2 are evacuated.
  • Such pressurizing and evacuating maintain about 40 minutes till the liquid expels from the pores of the fiber in containers 2'.
  • the vacuum degree in containers 2' and the pressure in container 2 are both reduced, and the pressure level of the containers 2, 2' is adjusted to the same pressure level.
  • the pressure level is 1 X 10 5 Pa of this example.
  • step (7) of post treatment the segments of the filled fiber of step (6) outside containers 2, 2' are irradiated using ultraviolet light with a power density of 700 X 10 -3 W/cm 2 and at a wavelength of 365 nm. Each filament of the multifilament is completely shined about 3 minutes. Thereby, tri(ethylene glycol) dimethacrylate filled in the hollow portion of the fiber are cured at the core of the fiber. Thereafter, the segments of fiber cured by ultraviolet light are cut, thus, the core-sheath fluorescent fiber is obtained, which shows red fluorescence under ultraviolet light.
  • Example 2 describes the process of manufacturing a self-sealing fragrance release fiber as follows.
  • Steps (1) to (3) of this Example are corresponsive to Example 1.
  • step (4) narcissus oil, rose oil, and osmanthus oil are mixed at a volumetric ratio 1:3:1 to form fragrance.
  • Polyvinylpyrrolidone(K-15), absolute ethyl alcohol, and glycerin are mixed respectively at a weight percent 15%, 10%, and 5% of the total weight of the fragrance, then the mixture are added to the fragrance.
  • the liquid 5 to be filled is obtained.
  • Steps (5) to (6) are corresponsive to the Example 1.
  • step (7) the segments of the filled fiber are cut into different length according to the time of fragrance release.
  • a sleeping-inducing fragrance release fiber is obtained, which can be composite with other textile.
  • the solid concentrate in the fiber becomes higher with the release of fragrance.
  • the fiber self seals, thus the rate of fragrance release being gradually reduced.
  • This example illustrates the process to manufacture 2-(2,6-dichloroanilino)-2-imidazoline hydrochloride release fiber.
  • Steps (1) to (3) of this Example are corresponsive to Example 1.
  • step (4) 5wt.% of Polyvinylpyrrolidone (K-15) and 60wt.% of 2-(2,6-dichloroanilino)-2-imidazoline hydrochloride are dissolved in absolute ethyl alcohol to produce the liquid 5, wherein the weight percents are relative to the total weight of absolute ethyl alcohol.
  • Steps (5) to (6) are corresponsive to the Example 1.
  • step (7) the segments of the filled fiber are cut into different length according to the time of the drug release.
  • the antihypertensive drug can be surgically delivered through the skin to human body.
  • 2-(2,6-dichloroanilino)-2-imidazoline hydrochloride is gradually released from the core of the fiber, and dissolved in the moisture of human skin surface, then enters human body.
  • the dosing times and rate of drug release can be controlled when the dose and components of auxiliary materials, the size of the fiber, and post treatments are properly chosen.
  • This example discloses a method to manufacture UV curing fragrance release fiber.
  • the hollow fiber 1 in a form of multifilament segment, can be produced by any publicly known techniques, for example, by the method described in U.S. Pat. No. 5,538,735.
  • the fiber 1 is made from 100D/24F polyester multifilament, and a hollowness ratio thereof is 25%.
  • the multifilament is cut into segments. Fifty 100D/24F multifilament segments, each in a length of 3 meters and with open ends 7, are prepared as a multifilament bundle with their ends 7 being arrayed. Each end 7 has an open 1' communicating with the hollow portion.
  • step (2) of preparing sealing gum 3 ethylene-vinyl acetate copolymer (EVA28/250) and common paraffin are mixed at a temperature of 120 degrees centigrade and at a mass rate of 5:1. The obtained sealing gum 3 is maintained at a temperature of 90 degrees centigrade.
  • EVA28/250 ethylene-vinyl acetate copolymer
  • common paraffin common paraffin
  • step (3) of sealing the ends of the hollow multifilament segments in the containers 2, 2' wherein both ends 7 are respectively sealed in one container 2 and one container 2' using the gum 3 of step (2), and are extended to the bottom of the containers, then cooling the gum 3 to a room temperature.
  • liquid 5 composed of fragrance and auxiliary materials is prepared.
  • step (5) liquid 5 of step (4) is added into the container 2 through the inlet 6 thereof, and the ends of hollow multifilament segments are completely immersed in the liquid 5 in the container 2.
  • step (6) of filling compressed air is introduced into the container 2 through the input port 4 thereof till the pressure inside the container 2 gets to 3 X 10 5 Pa, while the container 2' is evacuated.
  • Such pressurizing and evacuating maintain about 50 minutes till the liquid expels from the open of the ends of filaments in containers 2'.
  • the vacuum degree in containers 2' and the pressure in container 2 are both reduced, and the pressure level of the containers 2, 2' are adjusted to the same pressure level.
  • the pressure level is 1 X 10 5 Pa of this example.
  • step (7) of post treatment the segments of the filled multifilament of step (6) outside containers 2, 2' are irradiated using ultraviolet light with a power density of 700 X 10 -3 W/cm 2 and at a wavelength of 365 nm.
  • Each filament in the bundle is completely shined about 5 minutes, thereby, methyl methacrylate and butyl methacrylate filled in the hollow portion are cured to forming gel, and phase separation between the fragrance and the auxiliary materials performs.
  • the segments of fiber are cut after treatment, thus, the core-sheath lavender oil fragrance release fiber is obtained. Since, the gel in the core of the fiber is not compatible with water, and the fragrance is absorbed in the gel, the time of release fragrance is longer than that of example 2.
  • a long acting fragrance release fiber can be obtained using this method when auxiliary materials are properly chosen.
  • the example illustrates the method to manufacture photochromic fiber.
  • Steps (1) to (3) of this Example are corresponsive to Example 4.
  • step (4) 2wt.% 1',3'-Dihydro-1',3',3'-trimethyl-6-nitrospiro [2H- 1 -benzopyrane-2,2 ' -(2H)-indole] and 0.1 wt.% of azobisisobutyronitrile are dissolved in methyl methacrylate to form the liquid 5, wherein the weight percents are relative to the total weight of methyl methacrylate.
  • the obtained solution is composed of photochromic functional materials and auxiliary materials.
  • Steps (5) to (6) are corresponsive to the Example 4.
  • step (7) the segments of the fiber outside of the containers 2, 2' are heated at a temperature of 60 degrees centigrade for 40 minutes, then the temperature being raised to 90 degrees centigrade for 20 minutes. Therefore, a core-sheath photochromic fiber is obtained.
  • the photochromic fiber is irradiated using ultraviolet light for 10-20 seconds, the color thereof will turn to claret from white, and the claret will disappear if the fiber is placed in dark for about 2 hours, or is heated again. This color-changing process of the photochromic fiber of the present invention is repeatable.
  • This example illustrates a process to manufacture core-sheath filament with silver coating at the inner wall.
  • Steps (1) to (3) of this Example are corresponsive to Example 4, but the temperature of the fiber and containers 2,2' are maintained at 5 degrees centigrade.
  • step (4) ammonia water at a concentration of 5% is added into 35 parts by weight solution of silver nitrate at a concentration of 10% until the precipitation in their mixture disappears, and herein, the ammonia water is used about 45 parts by weight.
  • the mixture is placed in a cool water bath at a temperature of 5 degrees centigrade. Then 20 parts by weight of a solution of glucose at a concentration of 10% are added into the mixture, therefore, the filling liquid 5 is obtained.
  • step (5) liquid 5 of step (4) is added into the container 2 through the inlet 6 thereof, and the ends of hollow filament segments are completely immersed in the liquid 5 in the container 2.
  • Steps (6) of this Example are corresponsive to Example 4, but the time for pressurizing and evacuating approximately maintains 30 minutes.
  • step (7) the segments of the filled filament outside the containers 2, 2' are rapidly heated to a temperature of 80 degrees centigrade, therefore, the color of the filled fiber turn to dust color, and the inner wall of the hollow portion is coated with silver.
  • step (8) residual filling liquid 5 is discharged from containers 2,2' and the container 2,2' are washed using water. Then container 2 is added enough water and is pressurized, and the container 2' is evacuated. The water flows from the hollow portion with silver coating to remove the by-product during coating silver from the hollow portion for cleaning the coated fiber. Then the segments of the fiber outside the containers are cut and dried. Finally, the fiber with silver coating at the inner wall of the hollow portion is formed, which has excellent antibiotic and antisepsis property.
  • the process of the present invention is applicable to make composite fiber with the same.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Multicomponent Fibers (AREA)
EP04012575A 2004-05-27 2004-05-27 Procédé pour la fabrication de fibres composites du type âme-gaine Withdrawn EP1600534A1 (fr)

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EP04012575A EP1600534A1 (fr) 2004-05-27 2004-05-27 Procédé pour la fabrication de fibres composites du type âme-gaine

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Cited By (10)

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Publication number Priority date Publication date Assignee Title
WO2011035220A1 (fr) * 2009-09-20 2011-03-24 Medtronic Vascular Inc. Appareil et procédé pour charger un dispositif médical d'élution de médicament
US8333801B2 (en) 2010-09-17 2012-12-18 Medtronic Vascular, Inc. Method of Forming a Drug-Eluting Medical Device
US8616040B2 (en) 2010-09-17 2013-12-31 Medtronic Vascular, Inc. Method of forming a drug-eluting medical device
US8632846B2 (en) 2010-09-17 2014-01-21 Medtronic Vascular, Inc. Apparatus and methods for loading a drug eluting medical device
US8678046B2 (en) 2009-09-20 2014-03-25 Medtronic Vascular, Inc. Apparatus and methods for loading a drug eluting medical device
US8828474B2 (en) 2009-09-20 2014-09-09 Medtronic Vascular, Inc. Apparatus and methods for loading a drug eluting medical device
US8916226B2 (en) 2009-09-20 2014-12-23 Medtronic Vascular, Inc. Method of forming hollow tubular drug eluting medical devices
US9283305B2 (en) 2009-07-09 2016-03-15 Medtronic Vascular, Inc. Hollow tubular drug eluting medical devices
US9486340B2 (en) 2013-03-14 2016-11-08 Medtronic Vascular, Inc. Method for manufacturing a stent and stent manufactured thereby
CN116288806A (zh) * 2023-04-21 2023-06-23 王宝友 一种制备抗菌防腐涤锦超细纤维的方法

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US5538735A (en) * 1993-02-19 1996-07-23 Ahn; Sam S. Method of making a drug delivery system using hollow fibers
US6021822A (en) * 1996-05-24 2000-02-08 Teijin Limited Method of filling hollow fiber with gel

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JPS6261008A (ja) * 1985-09-11 1987-03-17 Hitachi Chem Co Ltd プラスチツク光フアイバ−の製造法
US5538735A (en) * 1993-02-19 1996-07-23 Ahn; Sam S. Method of making a drug delivery system using hollow fibers
US6021822A (en) * 1996-05-24 2000-02-08 Teijin Limited Method of filling hollow fiber with gel

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Title
DATABASE WPI Section Ch Week 198716, Derwent World Patents Index; Class A89, AN 1987-113773, XP002304445 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9283305B2 (en) 2009-07-09 2016-03-15 Medtronic Vascular, Inc. Hollow tubular drug eluting medical devices
US8828474B2 (en) 2009-09-20 2014-09-09 Medtronic Vascular, Inc. Apparatus and methods for loading a drug eluting medical device
CN102665782A (zh) * 2009-09-20 2012-09-12 麦德托尼克瓦斯科尔勒公司 用于对药物洗脱医疗装置进行加载的设备和方法
US8381774B2 (en) 2009-09-20 2013-02-26 Medtronic Vascular, Inc. Methods for loading a drug eluting medical device
US8460745B2 (en) 2009-09-20 2013-06-11 Medtronic Vascular, Inc. Apparatus and methods for loading a drug eluting medical device
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