WO2005012607A1 - 極短繊維の製造方法及びその装置 - Google Patents
極短繊維の製造方法及びその装置 Download PDFInfo
- Publication number
- WO2005012607A1 WO2005012607A1 PCT/JP2004/011289 JP2004011289W WO2005012607A1 WO 2005012607 A1 WO2005012607 A1 WO 2005012607A1 JP 2004011289 W JP2004011289 W JP 2004011289W WO 2005012607 A1 WO2005012607 A1 WO 2005012607A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fiber bundle
- fiber
- cutting
- short fibers
- cut
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
- D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
- D01G1/025—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by thermic means, e.g. laser
- D01G1/027—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by thermic means, e.g. laser by freezing
Definitions
- thermoplastic synthetic polymers such as polyester and polyamide
- this fiber bundle is cut to obtain short fibers of several mm to several tens of thighs.
- a fiber bundle is wound on a cutter roller provided with a large number of cutting blades radially, and the fibers scattered on the cutting blade are continuously pressed for a predetermined length while being pressed against the cutting blade.
- a roller cutter set fiber bundle cutting device for cutting into pieces is used.
- a so-called guillotine cutter set fiber bundle cutting device for providing a fixed blade and a movable blade as shear blades and extruding and cutting a fiber bundle by a predetermined cutting length with respect to these shear blades has been known for a long time.
- the work material is held so that the embedment material that forms a part of the work material does not change from a solidified state to a liquefied or vaporized state. It is preferable to provide a cooling means and / or a cooling means for cooling the holding means. Alternatively, it is also preferable to cool the cutting blade in some cases.
- FIG. 3 shows an embodiment using, as a specific example, a method of embedding a fiber bundle F wound using the hexagonal winding frame illustrated in FIG. 1, and FIG. A plan view and FIG. 3 (b) show a schematic side view, respectively.
- FIG. 4 is an explanatory view (plan view) schematically illustrating a treatment tank for embedding a fiber bundle with an embedding material.
- FIG. 7 is a schematic explanatory view (plan view) schematically illustrating an embodiment of the embedding process performed in a state where the fiber bundle is separated from the winding frame.
- FIG. 9 is an explanatory diagram schematically illustrating the embedding process of the fiber bundle.
- FIG. 10 is a cross-sectional view taken along the line AA in FIG. 9.
- FIG. 10 (a) is an embodiment of a small fiber bundle group having a rectangular cross section
- FIG. 10 (b) is a sectional view.
- Each of the embodiments has a circular cross section.
- a fixing jig such as a stretcher
- a predetermined tension should be applied again to both ends of the cut fiber bundle before fixing the fiber bundle in the wrapping material.
- the single fibers are restrained without changing their positions by the adhesive tape or the like. It can be easily returned to the aligned state.
- each yarn (yl, y 2, y 3,...) Comprising a multifilament (a large number of single fiber groups) having a single fiber fineness of 0.001 to 10 dtex is combined.
- the fibers are adjusted to have a total fineness of 10,000 to 100,000 dtex.
- Adjust vascular F Adjust vascular F. Therefore, in the winding machine 1, the yarn group y supplied from the yarn winding group P is wound on the yarn group y as many times as necessary to obtain a fiber bundle F having a predetermined total fineness.
- a frame 10 is provided. Therefore, the winding frame is provided with a winding width regulating member 11 for regulating the winding width of the fiber bundle F to a predetermined length as a constituent member of the winding frame 10.
- the fixed portion of the fiber bundle (Fel, F e 2, ' '', Fe6) in order to not been aligned in a straight line, not suitable as the cutting material for cutting in order to obtain very short fibers is there. Therefore, it is preferable in the present invention to fix an adhesive that cannot use such a portion (Fel, Fe2,..., # 6) as a workpiece.
- the fiber bundle (Fel, F e 2, one, FE6) but that the fixing by adhesive portion is in good preferable embodiment, this is not essential This is added here just in case.
- FIG. 4 is an explanatory view (plan view) schematically illustrating a treatment tank 4 for embedding the fiber bundle F with an embedding material 5.
- FIG. 5 is a view for explaining a step of immersing the winding frame 10 in which the fiber bundle F is wound in the processing tank 4 filled with the liquid embedding agent 5 to perform the embedding process.
- FIG. 5 (a) is a schematic plan view
- FIG. 5 (b) is a schematic side view.
- FIG. 6 is a schematic side view schematically illustrating a state in which the liquid embedding agent 5 is cooled and solidified, and then taken out of the processing tank 4.
- a straight section necessary for cutting the embedded fiber bundle F into ultra-short fibers is cut out with a force cutter, and the material to be cut is cut out. I do.
- a portion indicated by a chain line is cut out by a cutter.
- the linear fiber shown in Fig. 1 The bundle (Fsl, Fs2,%) Can be used as a material to be cut when producing ultra-short fibers.
- the degree of freedom of movement of the long single fiber group constituting each small fiber bundle F is fixed and restricted by the wrapping material 12.
- the embedding agent 12 that has changed into a liquid state is introduced between the small fiber bundles F so as to surround the outer circumference of the group of small fiber bundles F, the deepest center of each of these small fiber bundles F It is important that the part can be easily reached. Therefore, in order to realize this, the “maximum required distance” required when the embedding agent 12 that has changed into a liquid state enters the deepest center of each small fiber bundle F becomes a problem.
- FIG. 11 FIG. 11
- the embedding agent 12 that can be suitably used has excellent permeability and dispersibility as properties that can easily enter between the single fiber groups. Because such surfactants are embedding agents that have changed to a liquid state
- the small fiber bundle F to be subjected to the foaming treatment has minute voids in its interior, but it is important to note that air is intervened in these voids under normal conditions. Needless to say. Therefore, if air continues to exist in the small fiber bundle F group as it is, no matter how much the fiber bundle that bundles these small fiber bundles F is immersed in the embedding agent 12, the single fiber group The embedding agent 12 cannot completely enter the fibril bundle F due to the intervening air.
- the vacuum state may be a degree of vacuum that can be achieved by a normal vacuum suction device 16 and there is no particular need to limit the degree of vacuum, but for example, a vacuum of about 10 to 300 T0RR Degrees are preferred. This is not preferable when the temperature is 10 T0RR or less, since water is used as the embedding agent and the evaporation is so severe that it is necessary to use extra water for evaporation. On the other hand, if it exceeds 300 T0RR, it is not preferable because bubbles inside the fiber bundle cannot be sufficiently removed.
- surfactants having such a function include nonionic surfactants such as polyalkylene glycol esters and ethers, and anionic surfactants such as fatty acid, alkyl phosphate, sulfonate, and alkali metal salt of sulfate; Examples thereof include cationic surfactants such as quaternary ammonium salts, and amphoteric surfactants such as metal salts of aminocanolevic acid and alkyl betaines.
- the embedding agent 12 is once boiled before the embedding process is performed to drive out gas components dissolved in the embedding agent 12. . This is because if you do this, This is because air dissolved in the embedding agent 12 for some reason can be prevented from forming bubbles. Therefore, bubbles generated inside the fiber bundle F can be suppressed, and the binding force of the single fiber group by the solidified embedment material can be enhanced.
- the air dissolved in the water under the freezing container 22 is dissolved in the water with the formation of ice on the water surface.
- the concentration increases and eventually bubbles into the water.
- the bubbled air is prevented from escaping by the ice that has already been generated above and is trapped inside.
- icing of the water surface formed on the lid member is prevented. Then, the bubbled air can easily escape from the non-freezing water surface.
- the water in the freezing container 22 is vibrated by the microvibration generator 28 or the like, and when it competes, the unfreezed water is constantly moved. As a result, the bubbles that are about to be caught by the ice that has begun to freeze are repelled and returned to the unfrozen water. Finally, a fiber bundle F embedded with bubble-free and transparent ice is completed.
- the temperature for cooling the bottom of the freezing container 22 is set at 11 ° C to 120 ° C (preferably, 2 ° C to 15 ° C). If the temperature is higher than this, the temperature gradient becomes too gentle, and the ice does not freeze from the bottom of the ice container 22.
- the embedment material (embedding agent) used in the present invention in addition to the above-mentioned water (water), for example, heating may cause a phase change (vaporization) from solid to gas like dry ice. Materials that undergo a phase change (liquefaction) from solid to liquid when heated like ice can be used. Because, by heating the embedment material into an amorphous and low-viscosity flow state such as a gas or a liquid, the embedment material can be freely deformed to surround the fiber bundle F. The reason is that the fiber bundle F can easily enter between the single fiber groups constituting the fiber bundle F because of its low viscosity.
- the group of single fibers constituting the fiber bundle F is solidified by the embedding material. For this reason, even if the cutting force acts on the single fiber, the single fiber does not easily escape from the cutting blade, and a state in which a large force can be applied can be realized as described above.
- the main feature of this effort is to first embed the fiber bundle F with an embedment material.
- Such embedment materials include those described above in addition to dry ice and ice.
- paraffin can be suitably used, and furthermore, a thermoplastic resin having a significantly lower molecular weight than the fiber to be embedded can be used.
- thermoplastic resin having such a high molecular weight is not particularly limited as long as it has a low melting temperature and a low melt viscosity and can be easily separated from the ultra-short fibers to be produced.
- Well-known low-molecular-weight thermoplastic resins such as polyester, low-polymerized polystyrene, and low-polymerized polyethylene can be appropriately used according to the use conditions.
- a major feature of the present invention is that the ultra-short fibers and the embedment material can be easily and completely separated after cutting when producing the ultra-short fibers. Therefore, in order to easily and completely separate them, it is preferable to use dry ice or ice as an embedding material, and it is particularly preferable to use ice as described above. It is particularly preferable to use ice as the embedment material, as described above, since the fiber bundle can be easily frozen using a simple device.
- the method for producing ultra-short fibers according to the present invention since the end faces of the fiber bundles frozen by the cutting blade are cut into flakes, the cutting surfaces appear one after another, At the time of manufacture, it can be said that the surface area is very large. However, if the aggregate of cut ultrashort fibers in such a state suitable for freeze-drying is left as it is without any measures, the newly generated cut surfaces will overlap. Thus, the surface area is reduced despite the large surface area.
- the frozen short fibers are soft-landed while blowing air cooled to below zero degree, thereby cutting the cut frozen short fibers. It is a preferred embodiment to form and accumulate bridges between frozen short fibers. At that time, it is needless to say that it is necessary to adjust the thickness of the aggregate of the frozen ultra-short fibers so that the formed ridge does not become loose due to the weight of the accumulated frozen ultra-short fibers. Absent. For this purpose, it is preferable to use a method such as traversing the means for storing the frozen ultra-short fibers so that the accumulated thickness of the cut frozen ultra-short fibers becomes substantially uniform.
- Fig. 15 shows a schematic front cross-sectional view in which the cross section of the main part (cutting part) of Fig. 14 is enlarged.
- the embedding process has already been described in 1b.
- the fiber bundle 3 la is composed of a number of aligned single fiber groups, and the total fineness of the fiber bundle 31 a is set at 10,000 to 1,000,000 dtex.
- the total length of the fiber bundle 31a used at this time does not need to be particularly limited. However, considering workability and productivity, and further considering the ease of embedding treatment, it is 5 to 100000. mm is preferable. However, in the embodiment of FIG.
- the cutting blade 34 provided on the tool rest 33 is adjusted to protrude from the contact plane A of the tool rest 33 by a projection length C.
- the protrusion length C can be adjusted to be equal to or less than 1 corrupt, and preferably to a height of 0.001 to 0.1 mm.
- the fiber length of 0.005 mm or more and 1 mm or less (especially, 0.005 mm) corresponding to the adjusted protrusion length C is adjusted. It is possible to cut extremely short fibers having a fiber length of 0.1 mm or less) from the workpiece 31.
- the thickness of the cutting blade 34 to be used is a design matter that can be optimized as appropriate according to the properties of the material 31 to be cut, but the thickness of 0.2 to 12.0 thighs is preferably used. can do.
- H is an elongated hole for allowing the sliding member 37a to be movable in the sliding direction when the fastening of the fastening member 37b is loosened.
- G is a groove into which the bottom of the sliding member 37a is fitted. This groove is provided at the position shown in the opening O of the tool post 33 along the sliding direction of the sliding member 37a. Have been.
- At least one of the cutting blades 34 extends in the direction perpendicular to the plane of the tool post 33, that is, from the center of rotation (the axis of the rotary drive shaft 36e) to the radial direction. It is already mentioned that it is provided.
- the low-temperature vaporized gas may be adiabatically expanded and cooled, and the cooled low-temperature vaporized gas may be directly passed through the refrigerant pipe 61 with the refrigerant. Also, if it is not necessary to cool down to a very low temperature, The coolant such as brine is primarily cooled by the low-temperature vaporized gas thus obtained, and the coolant such as brine that has been primarily cooled is circulated through the coolant pipe 61, so that the material to be cut 31 and Z or The cutting blades 34 may be secondarily cooled.
- the embedding material 31 b when a relatively low molecular weight resin / paraffin having a melting temperature of 10 to 150 ° C. is used as the embedding material 31 b, the embedding material 31 b is softened. As a result, a situation occurs in which the fiber bundle 31a cannot be strongly fixed and restrained by the wrapping material 31b. Even in such a case, the work material 3 1
- the hardness of the embedment material 31b can be controlled by cooling it by the cooling means and freezing it to, for example, 0 to 100 ° C. Then, by controlling the hardness of the embedment material 3 1b, a situation in which the degree of freedom of movement of the fiber bundle 3 1a can be appropriately restrained by the embedment material 3 1b can be realized. .
- the temperature suitable for freezing the material to be cut 31 varies depending on the embedment material 31b to be used. It is preferable to determine the optimum temperature by the following method. '
- the cooling temperature determined by the experiment in this way is stored in the storage means of the temperature control means constituted by a microcomputer or the like (not shown), so that the material to be cut 31 and the cutting blade 34 can be optimized. Used to cool down.
- a temperature sensor 62 a composed of a temperature detecting end such as a thermocouple attached to a gripping member 14 gripping the workpiece 31, or a cutting blade 3. 4 or a similar temperature sensor 6 2b attached to a fixing member 5 for fixing the temperature, the temperature of the workpiece 3 1 and the cutting blade 34 are detected, respectively, and the detected temperature is used as a control variable and the temperature control means is used.
- Transducer ⁇ Input via interface means equipped with an A / D converter (analog / digital converter). Then, based on the input detected temperature, the refrigerator unit is fed back according to a standard method so that the work material 31 and the cutting blade 34 maintain the optimum temperature determined by the experiment as described above. Control may be performed.
- a / D converter analog / digital converter
- the apparatus for manufacturing ultra-short fibers includes the embodiment described above, that is, the cutting end face of the workpiece 31 with a predetermined contact pressure against the contact plane A formed on the upper surface of the tool rest 33.
- the cutting blade 34a continuously presses and cuts with the cutting blade 34a
- the following embodiment can be adopted.
- the cutting of the workpiece 3 1 is performed on the contact plane A of the tool post 3 3.
- the cutting end face of the workpiece 3 1 is subjected to friction and cutting during cutting because the cutting end face is kept in contact with the cutting blade 4 a only during cutting without constantly contacting the end face. It has the advantage that it is hardly affected by the vibration of a.
- FIG. 19 and FIG. 20 are schematic explanatory views exemplarily illustrating a manner of producing ultra-short fibers according to the present invention.
- the holding means 32 plays a role of sharing and acting on the force acting on the workpiece 31 at a position close to the cutting blade 4 during cutting. Therefore, the holding means 3 2 does not completely hold the work material 3 1, but instead holds the work material 3 1 in a direction opposite to the direction in which the cutting force acts on the work material 3 1. It can also be constituted by a jig such as a guide plate abutting on the workpiece 31 so as to support it. As a member for gripping and fixing the workpiece 31, a well-known chuck can be used as long as the workpiece 31 is gripped and fixed well.
- Fig. 19 shows that a large number of workpieces 31 are set up side by side on a worktable, and these workpieces 31 are cut to embed in the packaging material 3 1b.
- the first row (L 1) to the eighth row (L 8) in the vertical direction correspond to the first column (R 1) to the 16 th column (R 16) in the horizontal direction, respectively.
- the contact pressure applying means 35 an air cylinder with a cylinder diameter of ⁇ 50 thigh and a stroke length of 100 mm is adopted, and compressed air of 0 • 11 Mpa is applied to this air cylinder. And supply the material to be cut 3 1 to the contact plane of the tool post 3 3 A pressed. Then, the rotary drive shaft (turret 3 3) was rotated at 30 revolutions per minute by rotating the turret 33 with an inverter motor with a speed reducer through a timing belt. At that time, the cutting blade 34 used was a high-speed steel having a thickness of 0.25 mm, a blade mounting angle of 25 °, and a blade retreat angle of 30 °.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Treatment Of Fiber Materials (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04748260A EP1652974A4 (en) | 2003-08-04 | 2004-07-30 | METHOD AND DEVICE FOR MANUFACTURING EXTREMELY SHORT FIBERS |
JP2005512587A JP4435738B2 (ja) | 2003-08-04 | 2004-07-30 | 極短繊維の製造方法 |
US10/566,177 US20060225252A1 (en) | 2003-08-04 | 2004-07-30 | Method and device for manufacturing extremely short fiber |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-285617 | 2003-08-04 | ||
JP2003285617 | 2003-08-04 | ||
JP2003-336937 | 2003-09-29 | ||
JP2003336937 | 2003-09-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005012607A1 true WO2005012607A1 (ja) | 2005-02-10 |
Family
ID=34117938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/011289 WO2005012607A1 (ja) | 2003-08-04 | 2004-07-30 | 極短繊維の製造方法及びその装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060225252A1 (ja) |
EP (1) | EP1652974A4 (ja) |
JP (1) | JP4435738B2 (ja) |
KR (1) | KR20060120577A (ja) |
TW (1) | TW200508436A (ja) |
WO (1) | WO2005012607A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006299482A (ja) * | 2005-04-22 | 2006-11-02 | Hosokawa Funtai Gijutsu Kenkyusho:Kk | 繊維回収装置 |
JP2006328582A (ja) * | 2005-05-25 | 2006-12-07 | Hosokawa Funtai Gijutsu Kenkyusho:Kk | 繊維回収装置 |
JP2012052271A (ja) * | 2010-09-03 | 2012-03-15 | National Institute For Materials Science | 繊維片製造方法 |
CN108823944A (zh) * | 2018-07-02 | 2018-11-16 | 江苏湛德医疗用品有限公司 | 一种无纺布生产过程剪裁机系统 |
EP3617359A1 (en) | 2018-09-03 | 2020-03-04 | Ricoh Company, Ltd. | Fiber aggregation, short fiber, film, and method of manufacturing the short fiber |
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JP2006219804A (ja) * | 2005-01-17 | 2006-08-24 | Teijin Fibers Ltd | 極短繊維の製造方法及び製造装置 |
FR2919284B1 (fr) | 2007-07-26 | 2010-09-24 | Snecma | Piece mecanique comportant un insert en materiau composite. |
FR2919283B1 (fr) * | 2007-07-26 | 2010-09-17 | Snecma | Piece mecanique comportant un insert en materiau composite. |
DE102009035113A1 (de) * | 2009-07-29 | 2011-02-03 | Philipps-Universität Marburg | Vorrichtung und Verfahren zur Herstellung von kurzen Fasern |
DE102011103840A1 (de) * | 2011-06-01 | 2012-12-06 | Trützschler GmbH & Co Kommanditgesellschaft | Vorrichtung an einer Spinnereivorbereitungsmaschine, z.B. Faserflockenspeiser, Karde, Reiniger o. dgl. zum Zu- und/oder Abfördern von Fasermaterial |
CN106702539A (zh) * | 2017-02-28 | 2017-05-24 | 攀枝花学院 | 用于纤维的剪切机 |
JP7043865B2 (ja) | 2017-03-14 | 2022-03-30 | 株式会社リコー | 立体造形用樹脂粉末、及び立体造形物の製造装置 |
EP3375608B1 (en) | 2017-03-17 | 2021-05-05 | Ricoh Company, Ltd. | Resin powder for solid freeform fabrication and device for solid freeform fabrication object |
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JP7331348B2 (ja) | 2017-11-13 | 2023-08-23 | 株式会社リコー | 樹脂粒子の製造方法 |
EP3524430B1 (en) | 2018-02-07 | 2021-12-15 | Ricoh Company, Ltd. | Powder for solid freeform fabrication, and method of manufacturing solid freeform fabrication object |
JP7338316B2 (ja) | 2018-08-31 | 2023-09-05 | 株式会社リコー | 樹脂粉末、及び立体造形物の製造方法 |
EP3620283B1 (en) | 2018-09-07 | 2022-03-30 | Ricoh Company, Ltd. | Resin powder, as well as method of and device for manufacturing a solid freeform object using said powder |
CN111139556A (zh) * | 2020-02-26 | 2020-05-12 | 江苏奥神新材料股份有限公司 | 一种用于聚酰亚胺纤维切断的设备及切断方法 |
CN114108146B (zh) * | 2022-01-28 | 2022-04-15 | 江苏九九久科技有限公司 | 一种耐热超高分子量聚乙烯纤维制品的制备装置 |
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- 2004-07-30 KR KR1020067002461A patent/KR20060120577A/ko not_active Application Discontinuation
- 2004-07-30 EP EP04748260A patent/EP1652974A4/en not_active Withdrawn
- 2004-07-30 US US10/566,177 patent/US20060225252A1/en not_active Abandoned
- 2004-07-30 WO PCT/JP2004/011289 patent/WO2005012607A1/ja active Application Filing
- 2004-07-30 JP JP2005512587A patent/JP4435738B2/ja not_active Expired - Fee Related
- 2004-08-04 TW TW093123406A patent/TW200508436A/zh unknown
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Cited By (11)
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JP2006299482A (ja) * | 2005-04-22 | 2006-11-02 | Hosokawa Funtai Gijutsu Kenkyusho:Kk | 繊維回収装置 |
JP4671224B2 (ja) * | 2005-04-22 | 2011-04-13 | ホソカワミクロン株式会社 | 繊維回収装置 |
JP2006328582A (ja) * | 2005-05-25 | 2006-12-07 | Hosokawa Funtai Gijutsu Kenkyusho:Kk | 繊維回収装置 |
JP4725995B2 (ja) * | 2005-05-25 | 2011-07-13 | ホソカワミクロン株式会社 | 繊維回収装置 |
JP2012052271A (ja) * | 2010-09-03 | 2012-03-15 | National Institute For Materials Science | 繊維片製造方法 |
CN108823944A (zh) * | 2018-07-02 | 2018-11-16 | 江苏湛德医疗用品有限公司 | 一种无纺布生产过程剪裁机系统 |
CN108823944B (zh) * | 2018-07-02 | 2024-04-12 | 江苏湛德医疗用品有限公司 | 一种无纺布生产过程剪裁机系统 |
EP3617359A1 (en) | 2018-09-03 | 2020-03-04 | Ricoh Company, Ltd. | Fiber aggregation, short fiber, film, and method of manufacturing the short fiber |
JP2020037750A (ja) * | 2018-09-03 | 2020-03-12 | 株式会社リコー | 繊維集合体、短繊維及びその製造方法、並びに膜及びその製造方法 |
JP7163676B2 (ja) | 2018-09-03 | 2022-11-01 | 株式会社リコー | 繊維集合体、短繊維及びその製造方法、並びに膜及びその製造方法 |
US11590685B2 (en) | 2018-09-03 | 2023-02-28 | Ricoh Company, Ltd. | Fiber aggregation, short fiber and method of manufacturing the same, and film and method of manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005012607A1 (ja) | 2006-09-21 |
EP1652974A1 (en) | 2006-05-03 |
EP1652974A4 (en) | 2008-08-27 |
TW200508436A (en) | 2005-03-01 |
US20060225252A1 (en) | 2006-10-12 |
KR20060120577A (ko) | 2006-11-27 |
JP4435738B2 (ja) | 2010-03-24 |
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