• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    MULTICOMPONENT FIBERS PRODUCED WITH ROTATING WIRING PROCESS. A multi-component fiber, comprising a first component and a second component, which together form a fiber body (11), the first component consisting of a first fiber raw material (1), and the second component consisting of a second fiber raw material (3), aiming at the task of making a multi-component fiber where heat sensitive fiber raw materials can be processed without being damaged, is characterized by production through a rotating spinning process. The aforementioned task is solved with a process where a first fiber raw material (1) is placed in a first container (2), where a second fiber raw material (3) is placed in a second container (4) , where both containers (2,4) are rotated, where the first fiber raw material (1) is removed from the first container (2), where the second fiber raw material (3) is removed from the second container ( 4) and where, after leaving the containers (2,4), the raw fiber materials (1,3) are joined, where the containers (2,2) rotate around the same axis (A), being that the first fiber raw material (1) leaves the first container (2) through a first channel nozzle (5,9a) and being (...) ■
    公开号:BR112012024007B1
    申请号:R112012024007-2
    申请日:2011-01-18
    公开日:2020-11-10
    发明作者:Wiebke Schmitz；Dirk Grafahrend；Denis Reibel
    申请人:Carl Freudenberg Kg；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a multicomponent fiber comprising a first component and a second component that together form a fiber body, the first component consisting of a first fiber raw material, and the second component consists of a second fiber raw material. The present invention also relates to a process where a first fiber raw material is placed in a first container, where a second fiber raw material is placed in a second container, where both containers are rotated, where the first material Raw fiber is removed from the first container, where the second fiber raw material is removed from the second container and where, after leaving the containers, the fiber raw materials are collected. TECHNICAL STATUS
    [0002] From the state of the art it is known to produce hollow, bicomponent or multicomponent fibers with classic spinning processes from the melt.
    [0003] In view of this history, EP 801 039 A2 is known for a process for the production of bicomponent fibers by means of rotating containers. In this process, a first mineral fiber raw material opened by melting the first rotating container is removed through nozzles. On the first raw material of mineral fiber removed, a second raw material of mineral fiber opened by fusion is applied on the outside, the latter being thrown on the outer wall of the first rotating container. The first container is disposed away from the second container, the containers being able to rotate independently of each other.
    [0004] In the known processes it is disadvantageous that multicomponent fibers can only be produced under the application of high temperatures, that is, the production of melts. In this, it is particularly disadvantageous that thermally sensitive fiber raw materials cannot be processed into bicomponent fibers without being damaged. Especially medicines, fungicides, bactericides and similar materials sensitive to heat cannot be processed with the mentioned processes. PRESENTATION OF THE PRESENT INVENTION
    [0005] For this reason, the present invention has the task of making a multi-component fiber where thermally sensitive fiber raw materials are processed without being damaged.
    [0006] The present invention solves the above mentioned task by means of a multi-component fiber, comprising a first component and a second component, which together form a fiber body, the first component consisting of a first fiber raw material, and the second component consists of a second fiber raw material, with at least one component having a substance whose structure is destroyed after at least two minutes of heating at a temperature of at least 50 ° C, with a production through a rotating spinning process.
    [0007] According to this, the multicomponent fiber is produced by means of a rotating spinning process. Such a process is characterized by the fact that the containers are rotated around the same axis, with the first fiber raw material exiting the first container through a first channel nozzle, and the second fiber raw material exiting. of the second container through a second channel nozzle.
    [0008] Multicomponent fibers that are produced using the process described here, are often twisted with each other. In this, at least two multicomponent fibers are wound together similarly to two strands. This effect occurs especially in the rotating spinning process. This makes it possible to see if multicomponent fibers were produced by a rotating spinning process.
    [0009] In accordance with the present invention, it was first found that multicomponent fibers can be produced through a rotary spinning process from thermally sensitive fiber raw materials. These fiber raw materials cannot just be used in classic spinning processes that use molten masses without being damaged. Specifically, it has been discovered that raw fiber materials can also be spun that cannot be processed in a thermoplastic way from a spinning solution. Finally, it was found that with the process according to the present invention they can be spun to obtain multicomponent fibers or biodegradable materials and biopolymers that in most cases cannot be melted or that are very sensitive to temperature. According to the present invention, this is accomplished by the fact that two containers are rotated about the same axis. This allows for a smooth joining of the fiber raw materials that are extracted using centripetal forces to form multicomponent fibers. Through the appropriate selection of the rotation speed, the residence time of the fiber raw materials in the containers can be selected in such a way that they are requested by heat only for a very short time and thus are not damaged by the temperature. In this sense, a multi-component fiber can be made, where thermally sensitive fiber raw materials can be processed without damage.
    [00010] Therefore, the task initially mentioned is solved.
    [00011] The multicomponent fiber could have a biocompatible component and / or could be biodegradable in the human or animal organism. The multicomponent fiber could be biodegradable in the human or animal organism. In this way, the multicomponent fiber could be placed over a wound and intertwine seamlessly with human or animal body tissue or be degraded by it.
    [00012] At least one component of the multi-component fiber could contain a drug or be made of a drug. In this way, a human or animal could receive medicines in the form of fiber. It is imaginable, to produce bandages of fleece in whose fibers medicines are integrated. Other areas of application are in the field of cosmetics, tissue engineering and implants.
    [00013] At least one component could have a substance whose structure after at least two minutes of heating is destroyed at a temperature of at least 50 ° C. Destruction of the structure, in this case, is also a decrease in the specific effectiveness of the substance. Such a substance can be a medication, especially an antibiotic, enzyme, growth factor or a pain relieving agent.
    [00014] At least one component could contain an antibiotic. Antibiotics suppress the growth of bacteria or germs.
    [00015] At least one component could contain an enzyme. Enzymes can control the processes of metabolism.
    [00016] At least one component could contain a growth factor. Growth factors can influence cell growth.
    [00017] At least one component could contain an agent for pain relief. In this way, multicomponent fibers could be placed over wounds and relieve the pain of injuries.
    [00018] The task initially mentioned is also solved through a process for the manufacture of a multi-component fiber, where a first fiber raw material is placed in a first container, where a second fiber raw material is placed in a second container, where both containers are rotated, where the first fiber raw material is removed from the first container, where the second fiber raw material is removed from the second container and where, after leaving the containers, the raw materials fibers are joined together, the containers rotating around the same axis, with the first fiber raw material exiting the first container through a first channel nozzle and the second fiber raw material exiting the second container through the second channel nozzle.
    [00019] In order to avoid repetition in relation to the inventive step, refer to the explanations regarding the multicomponent fiber itself.
    [00020] Fiber raw materials could be brought together in such a way that they complement each other to form a multicomponent fiber. In this, fiber raw materials that are still soft, after leaving the channel nozzles attached to them, can enter an intimate union, with closure due to the material. The channel nozzles are joined in such a way that multicomponent fibers of different constructions appear. In this way, two-component fibers can be produced, especially core and shell fibers or fibers side by side, the so-called "core shell" fibers or "side by side" fibers.
    [00021] The first container could be coupled to an inner tube and the second container, to an outer tube, the second container being circumferentially surrounding the first container, and a channel nozzle of the first container being conducted concentrically within a channel nozzle of the second container. Through this process, a multicomponent fiber can be produced that is configured as a core and shell fiber, that is, a "core shell" fiber.
    [00022] The first container could be coupled to a lower rotor part, the second container being coupled to an upper rotor part, and a channel nozzle with a semicircular cross-section of the first container is placed in a channel nozzle with a semicircular cross-section of the second container. Through this procedure, a multicomponent fiber can be produced that is configured as a side-by-side fiber, that is, a "side by side" fiber.
    [00023] A device for carrying out the process described herein comprises two containers that can be rotated about the same axis, with a first container being connected to the first channel nozzles and a second container, second channel nozzles, and being that the first channel nozzles and the second channel nozzles are aligned. In this way, multicomponent fibers can be produced since the raw fiber materials that are leaving, after leaving the channel nozzles, can assume a tight intimate connection with closure due to the material between them.
    [00024] With the process described here, core and shell fibers could be produced with active substance filling, the so-called "drug release" fibers. The shell could consist of a hydrogenation material, especially gelatin, PVA and others. In this way, an active ingredient of the core and shell type fiber can diffuse. A core and bark fiber could have a core that promotes wound healing or is antibacterial, for example, Medihoney, Panthenol, Chitosan and others. Core and shell fibers could also be produced with a non-gel core and a gel-shell for absorbent wound dressings. It is also imaginable to produce fibers "side by side" with material that gels or does not.
    [00025] For the production of hollow fibers, a core could be provided that can be separated by washing or removed from a core and shell type fiber. The core could be removed, for example, by means of heat treatment. By removing the core, the hollow fiber has a raised surface. By raising the accessible fiber surface, the surface activity of a fibrous wound dressing is increased.
    [00026] With the process described here it could also be spun into the core of a core and shell type fiber raw materials that are unreliable or that can be spun with difficulty. In particular, it is conceivable to spin aqueous solutions with active ingredients or proteins.
    [00027] With the process described here, two raw fiber materials that react with each other could also be spun. In this, it is conceivable that a polymer will be spun with a crosslinking agent. Thus, the spinning process and a crosslinking reaction can be carried out in one step.
    [00028] In the process described here, spinning solutions, dispersions, emulsions or melts of the following polymers and mixtures of these polymers could be used:
    [00029] Biodegradable synthetic polymers such as copolymers of polylactides, polylactide-co-glycolide, for example, Resomer RG 502 H, polylactide-block-polyethylene oxides, for example, Resomer RGP d 5055, polycaprolactone, policaprolacton-block-oxides polyethylene, polyanhydrides, for example, polyifeprosan, polyiortoester, polyphosphoester, for example, polylactophates, synthetic biocompatible polymers or polymers that are used in medicine, such as polyethylene glycol, polyethylene oxides, polyvinylpyrrolidone, polyvinyl alcohols, polyethylene, polyethylene, polyethylene, polypropylene , polymethylmethacrylates, polyvinyl chlorides, polyethylenterephthalates, polytetrafluoroethylenes, poly-2-hydroxyethyl methacrylates, biopolymers such as proteins and peptides, polysaccharides, lipids, nucleic acids and especially gelatines, collagen, alginates, cellulose compounds, active compounds an active ingredient or an additive attached to a p biodegradable or biocompatible polymer, and copolymers of the above mentioned classes of polymers.
    [00030] Additives or active ingredients could be added to the spinning solutions:
    [00031] Enzymes, antimicrobials, antioxidants, anti-inflammatories, antibiotics, antiviral active ingredients, "anti-rejection agents", analgesics, analgesic combinations, antiflogistics, anti-inflammatory agents, wound healing agents, hormones, steroids, testosterone, could be used estradiol, peptides and / or peptide sequences, immobilized peptide sequences promoting adhesion, such as peptide sequences and peptide fragments of extracellular matrix proteins, especially peptides containing one or more RGD-, LDV-, GFOGER amino acid sequences , IKVAV-, SVVYGLR-, COMP-, ADAM-, POREM-, YIGSR-, GVKGDKGNPGWPGAP-, cycle-DfKRG-, KRSR-, isolated and / or genetically produced proteins, polysaccharides, glycoproteins, lipoproteins, amino acids, growth factors, especially from the TGF growth factor families, especially TGF-β, FGF, PDGF, EGF, GMCSF, VEGF, IGF, HGF, ILO-1B and NG, RNA, siRNA, MRNA and / or DNA, anticancer agents, such as paclitaxel, doxorubicin, 1,3-bis-2-chloroethyl-1-nitrospourea BCNU, campothecin, living cells, opiates, nicotine, nitroglycerin, clonidine, fentanyl, scopolamine, rapamycin, sirolimus, gentamicin sulfate , gentamicincrobefatro, aminosulfonic acids, sulfonamide peptides, molecules analogous to peptides on the basis of D-amino acids, furanone derivatives, dexamethasone, p-tricalcium phosphate and / or hydroxyapatite, especially nano-particles of hydroxyapatite, in concentrations of 0.000001 - 70%.
    [00032] Through the process described here there is a wide range of reliable fiber raw materials, such as biopolymers, especially proteins, polysaccharides, and polymers in aqueous spinning solutions or in organic solvents.
    [00033] It is also conceivable to carry out the process with melts of fiber raw material, for example, melts of polymers, especially polycaprolactone and polysaccharides, especially sucrose.
    [00034] Various spinning solutions could also be mixed. In particular, a first spinning solution, that is, a solution of polyvinylpyrrolidone and polyvinyl alcohol, and a second spinning solution, that is, a solution of gelatin and sodium alginate, can be mixed.
    [00035] It is also possible to use dispersions and emulsions as spinning solutions.
    [00036] With the process described here, raw materials of fiber can also be spun, as raw materials of fiber, which are not reliable in themselves. In particular, an aqueous solution with a dissolved active ingredient could be spun.
    [00037] The multicomponent fibers produced with the process described here could undergo further treatments, such as crosslinking reactions. Multicomponent fibers could also be processed to become a fleece with the help of a compaction process.
    [00038] The fiber raw materials mentioned in the specification could be present as spinning solutions.
    [00039] There are now several possibilities for carrying out and improving the teaching of the present invention to advantage. To this end, it is appropriate to refer to the following explanation of preferred embodiments of the process according to the present invention and the multicomponent fiber according to the present invention.
    [00040] In the context of explaining the preferred execution examples, generally preferred achievements and improvements of the teaching are also presented. BRIEF DESCRIPTION OF THE DRAWING
    [00041] In the drawing they show:
    [00042] Figure 1 shows in section a top view over a device that has an internal rotor and an external rotor.
    [00043] Figure 2 shows a side sectional view of a device that has an internal rotor and an external rotor.
    [00044] Figure 3 shows a top view over the outlet side of the device's channel nozzles according to figure 1 and figure 2.
    [00045] Figure 4 shows a side sectional view of a device that has an upper rotor and a lower rotor.
    [00046] Figure 5 shows a top view on the outlet side of the channel nozzles of the device according to figure 4.
    [00047] Figure 6 shows a core and shell fiber and a fiber side by side.
    [00048] The execution of the present invention.
    [00049] Figure 1 shows a device for carrying out a process where a first fiber raw material 1 is filled into a first container 2, where a second fiber raw material 3 is filled into a second container 4, both containers 2, 4 being rotated, with the fiber raw material 1 leaving the first container 2, where the second fiber raw material 3 leaving the second container 4 and the raw materials fiber 1, 3 are joined after leaving containers 2, 4.
    [00050] Containers 2, 4 rotate around the same axis, with the fiber raw material 1 exiting the first container 2 through a first channel nozzle 5, and the second fiber raw material 3 exiting from the second container 4 through the second channel nozzle 6. The fiber raw materials 1, 3 are joined in such a way that they complement each other to form a multi-component fiber.
    [00051] The first container 2 is coupled to an internal rotor 7 and the second container 4 to an external rotor 8, where the second container 4 surrounds the first container 2, and where a channel nozzle 5 of the first container 2 is conducted concentrically within a channel nozzle 6 of the second container 4. The inner rotor 7 and the outer rotor 8 are arranged concentrically. The channel nozzles 5, 6 have outlet openings from which the 1.3 fiber raw materials come out.
    [00052] Figure 2 shows a side sectional view of a device for carrying out the process described above, the first container 2 being completely housed within the second container 4 and surrounded by it concentrically.
    [00053] Figure 3 shows a top view of the outlet opening of channel nozzles 5, 6 arranged concentrically of figure 1 and figure 2, through which a core and shell type fiber can be produced.
    [00054] Figure 4 shows a side sectional view of a device for carrying out the process described here, where the first container 2 is attached to a lower part of rotor 9, where the second container 4 is attached to an upper part of rotor 10, and where a channel nozzle with a semicircle-shaped cross section 9a of the first container 2 is abutted against a channel nozzle with a semicircle-shaped cross section 10a of the second container 4.
    [00055] The channel nozzles 9a, 10a have outlet openings where the 1.3 fiber raw materials come out.
    [00056] Figure 5 shows a top view over the outlet openings of the channel nozzles 9a, 10a with a cross-section in the shape of a semicircle that are flat against each other on their flat sides. This channel nozzle profile is used to produce a fiber side by side, that is, a "side by side" fiber.
    [00057] Figure 6 shows in the left view a multicomponent fiber that is made as a core and shell fiber, and in the right view a multicomponent fiber that is made as fiber side by side.
    [00058] Figure 6 shows two multicomponent fibers each comprising a first component and a second component that together form a fiber body 11, the first component of which consists of a first fiber raw material 1 and the second component consists of a second raw material of fiber 3. Multicomponent fibers are made by means of a rotating spinning process.
    [00059] In the following execution examples it is explained how with the devices described above, multicomponent fibers or fleece are produced.
    [00060] In this, the raw materials of fiber 1, 3 mentioned above are realized as spinning solutions.
    [00061] Example of execution 1:
    [00062] Production of bicomponent fibers that are configured as core and shell type fibers.
    [00063] A fleece, consisting of core and shell fibers, is produced as follows with a device according to figure 1 through a rotating spinning process:
    [00064] As a spinning solution 1, a 20% gelatin solution is prepared. A gelatin type A PIGSKIN from GELITA AG is used. Gelatin is added to water. Then, the gelatin solution rests for about an hour to swell. Then, the gelatin solution is dissolved and kept for about two hours at a temperature of 60 ° C.
    [00065] As a spinning solution 3, a 40% polyvinylpyrrolidone solution is prepared. Polyvinylpyrrolidone (MD about 40,000 g / mol) is added to water and dissolved at 70 ° C in a water bath.
    [00066] The wiring solution 1 is transferred, via a hose pump, to the container 2 of the internal rotor 7, the wiring solution 3 is simultaneously transferred, with another hose pump, to the container 4 of the external rotor 8.
    [00067] Containers 2, 4 have a temperature of about 80 ° C and rotate with a rotation number of 4500 revolutions per minute around the common A axis. The inner rotor 7 is located inside the outer rotor 8. From the inner rotor 7, channel nozzles 5 with a diameter of 0.5 mm depart. These flow into the channel nozzles 6 with a diameter of 1.0 mm of the external rotor 8 respectively and together with this form a spinning nozzle for the production of bicomponent fibers with segmentation of core and shell, or also for the production of hollow fibers .
    [00068] Through the centripetal force, the 1.3 fiber raw materials are pressed through the channel nozzles 5, 6 and spun to be bicomponent fibers that are stretched by means of a suction device. The suction device is located below the containers 2, 4.
    [00069] The proof that the polymers have not suffered any damage because of this process can be performed with chromatography.
    [00070] Example of execution 2:
    [00071] Production of bicomponent fibers that are configured as core and shell fibers with an unreliable core ..
    [00072] A fleece, consisting of bicomponent fibers with segmentation of core and shell is produced as follows with a device according to figure 1 through a rotating spinning process:
    [00073] As a spinning solution 1, a 5% gelatin solution is prepared. A gelatin type A PIGSKIN from GELITA AG is used. Gelatin is added to water. Then the gelatin solution rests for about an hour to swell. Then, the gelatin solution is dissolved and kept for about two hours at a temperature of 60 ° C.
    [00074] As a spinning solution 3, a solution of acetylsalicylic acid with a concentration of 0.1 mg / l and one weight% of polyethylene oxide (MG about 90000 g / mol) is prepared. Salicylic acid is dissolved in water.
    [00075] The wiring solution 1 is transferred, via a hose pump, to the container 2 of the internal rotor 7, the wiring solution 3 is simultaneously transferred, with another hose pump, to the container 4 of the external rotor 8.
    [00076] Containers 2, 4 have a temperature of about 60 ° C and rotate at a speed of 4500 revolutions per minute.
    [00077] The internal rotor 7 is located inside the external rotor 8. From the internal rotor 7, channel nozzles 5 with a diameter of 0.5 mm depart. These flow into the channel nozzles 6 with a diameter of 1.0 mm of the external rotor 8 respectively and together with this form a spinning nozzle for the production of bicomponent fibers with segmentation of core and shell, or also for the production of hollow fibers .
    [00078] Through the centripetal force, the raw materials of fiber 1,3 are pressed through the channel nozzles 5, 6 and spun to be bicomponent fibers that are stretched by means of a suction device. The suction device is located below the containers 2, 4.
    [00079] Example of execution 3:
    [00080] Production of bicomponent fibers that are configured as side-by-side fibers, that is, that present a side-by-side segmentation.
    [00081] A fleece, consisting of bicomponent fibers with side by side segmentation, is produced as follows with a device according to figure 4 through a rotating spinning process:
    [00082] For the production of a spinning solution 3, a 40% aqueous solution of polyvinylpyrrolidone is prepared. Polyvinylpyrrolidone (MG about 40,000 g / mol) is added to water and dissolved in a water bath at 70 ° C
    [00083] For the preparation of a spinning solution 1, a 40% gelatin solution is prepared. A gelatin type A PIGSKIN from GELITA AG is used. Gelatin is added to water. Then the gelatin solution rests for about an hour to swell. Then, the gelatin solution is dissolved and kept for about two hours at a temperature of 60 ° C.
    [00084] The wiring solution 3 is transferred, via a hose pump, to the container 4 of the upper part of the rotor 10, the wiring solution 1 is transferred, with another hose pump, to the container 2 of the part bottom of rotor 9.
    [00085] Containers 2, 4 have a temperature of about 80 ° C and rotate at a speed of 4500 revolutions per minute.
    [00086] The rotor 9, 10 is divided into an upper container 4 and a lower container 2. Channel nozzles 9a, 10a with 0.3 mm diameters of the lower container 2 and the upper container 4 are aligned on the outer wall of the rotor 9, 10 and together form a spinning nozzle for the production of bicomponent fibers with a side by side segmentation. This is shown in figures 4 and 5.
    [00087] Through the centripetal force, the 1.3 fiber raw materials are pressed through the channel nozzles 9a, 10a and spun to be bicomponent fibers that are stretched by means of a suction device. The suction device is located below the containers 2, 4.
    [00088] For viscosity, the spinning solutions 1,3 are regulated in such a way that after leaving the channel nozzle 5, 6, 91, 10a they have sufficient strength to form a fiber body. After leaving channel nozzles 5, 6, 91, 10a, the spinning solutions 1,3 can cool, solidify and / or crosslink strongly.
    [00089] Regarding other advantageous realizations and improvements of the teaching according to the present invention, on the one hand, attention is drawn to the general part of the description.
    权利要求:
    Claims (12)
    [0001]
    1. Multicomponent fiber, comprising a first component and a second component, which together form a fiber body (11), the first component consisting of a first fiber raw material (1), and the second component consisting of a second fiber raw material (3), with at least one component having a substance whose structure is destroyed after at least two minutes of heating at a temperature of at least 50 ° C, characterized by a production by means of a rotating spinning process.
    [0002]
    Multicomponent fiber according to claim 1, characterized by a biocompatible and / or biodegradability component in the human or animal organism.
    [0003]
    Multicomponent fiber according to claim 1 or 2, characterized by the fact that at least one component contains a drug or is made of a drug.
    [0004]
    Multicomponent fiber according to any one of claims 1 to 3, characterized in that at least one component contains an antibiotic.
    [0005]
    Multicomponent fiber according to any one of claims 1 to 4, characterized in that at least one component contains an enzyme.
    [0006]
    Multicomponent fiber according to any one of claims 1 to 5, characterized by the fact that at least one component contains a growth factor.
    [0007]
    Multicomponent fiber according to any one of claims 1 to 6, characterized in that at least one component contains an analgesic.
    [0008]
    8. Process for the manufacture of a multi-component fiber, as defined in any one of claims 1 to 7, where a first fiber raw material (1) is placed in a first container (2), where a second fiber raw material (3) is placed in a second container (4), where both containers (2, 4) are rotated, where the first fiber raw material (1) is removed from the first container (2), where the second raw material fiber raw material (3) is removed from the second container (4) and where, after leaving the containers (2, 4), the fiber raw materials (1, 3) are joined, characterized by the fact that the containers (2, 4) rotate around the same axis (A), with the first fiber raw material (1) exiting the first container (2) through a first channel nozzle (5, 9a) and the second fiber raw material (3) leaves the second container (4) through the second channel nozzle (6, 10a).
    [0009]
    Process according to claim 8, characterized in that the fiber raw materials (1, 3) are joined in such a way that they complement each other to form a multi-component fiber.
    [0010]
    Process according to claim 8 or 9, characterized in that the first container (2) is connected to an internal rotor (7) and the second container (4), to an external rotor (8), the second container (4) surrounds the first container (2) in its circumference, and a channel nozzle (5) of the first container (2) is guided concentrically within a channel nozzle (6) of the second container (4 ).
    [0011]
    Process according to any one of claims 8 to 10, characterized in that the first container (2) is coupled to a lower rotor part (9), the second container (4) being coupled to a part upper rotor (10), and a channel nozzle (9a) with a semicircular cross-section of the first container (2) is brought into contact with a channel nozzle (10a) with a cross-section semicircle of the second container (4).
    [0012]
    Process according to any one of claims 8 to 11, characterized in that it is carried out in a device comprising two containers (2, 4) that can be rotated about the same axis (A), the first being container (2), first channel nozzles (5, 9a) and a second container (4) are connected, second channel nozzles (6, 10a), the first channel nozzles (5, 9a) and the second channel nozzles (6, 10a) are aligned with each other.
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    法律状态:
    2018-04-10| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-02-19| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2020-01-14| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2020-06-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-11-10| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 18/01/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010012845A|DE102010012845A1|2010-03-25|2010-03-25|Multicomponent fibers produced by spin spinning|
    DE102010012845.7|2010-03-25|
    PCT/EP2011/000177|WO2011116848A2|2010-03-25|2011-01-18|Multi-component fibers produced by a rotational spinning method|
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