WO2005057263A1 - ドロップ光ファイバケーブル用frp製抗張力体 - Google Patents
ドロップ光ファイバケーブル用frp製抗張力体 Download PDFInfo
- Publication number
- WO2005057263A1 WO2005057263A1 PCT/JP2004/012736 JP2004012736W WO2005057263A1 WO 2005057263 A1 WO2005057263 A1 WO 2005057263A1 JP 2004012736 W JP2004012736 W JP 2004012736W WO 2005057263 A1 WO2005057263 A1 WO 2005057263A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frp
- optical fiber
- tensile strength
- fiber cable
- strength member
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
- G02B6/4433—Double reinforcement laying in straight line with optical transmission element
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4434—Central member to take up tensile loads
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4489—Manufacturing methods of optical cables of central supporting members of lobe structure
Definitions
- the present invention is suitable for an optical fiber cable in which an optical fiber core and a tensile member are collectively coated with a thermoplastic resin, particularly a lightweight, non-metallic drop optical fiber cable which can be reduced in diameter.
- the present invention relates to a tensile strength member made of FRP.
- a linear material made of FRP can be cited, but if instead of a metal wire tensile member, simply using an FRP wire, the body coating would not be obtained. If the bonding with the thermoplastic resin is difficult and the bonding is insufficient, it may lead to an increase in optical transmission loss due to the heat history of the cable construction and subsequent shrinkage strain, as well as abnormalities such as disconnection. It cannot function well.
- Patent Document 2 discloses a method for producing a rod made of a thermoplastic resin-coated fiber-reinforced synthetic resin in which an FRP interface and a thermoplastic resin coating are anchor-bonded.
- an uncured reinforcing core obtained by impregnating a reinforcing fiber bundle with an uncured thermosetting resin is coated with a molten thermoplastic resin, and then directly coated with a molten thermoplastic resin.
- the thermoplastic resin coating layer is cooled and solidified, it is guided to a pressurized high-temperature steam curing tank, and the interface between the reinforcing core and the coating layer is softened, and the thermosetting resin is brought into contact with the fluidized state.
- the curable resin is heated and cured, and subsequently, the coated thermoplastic resin is cooled to anchor the core interface made of fiber reinforced thermosetting resin (FRP) to the coated thermoplastic resin.
- FRP fiber reinforced thermosetting resin
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-337255
- Patent Document 2 Japanese Patent Publication No. 63-2772
- the present applicant has previously proposed a drop optical fiber cable characterized by a uniform FRP tensile strength member in Japanese Patent Application No. 2002-326513.
- the present inventors when manufacturing a drop optical fiber cable, apply a body made of thermoplastic resin to a coated FRP tensile strength body under manufacturing conditions, particularly at a relatively low speed and a high temperature range of extrusion temperature.
- a body made of thermoplastic resin to a coated FRP tensile strength body under manufacturing conditions, particularly at a relatively low speed and a high temperature range of extrusion temperature.
- make sure that the coating of the main body or the coated FRP tensile strength make sure that the coating of the main body or the coated FRP tensile strength
- the residual styrene monomer in the FRP portion was the cause of this foaming phenomenon, and it was found that limiting this to a predetermined range would eliminate this phenomenon.
- the present invention has been completed.
- the present invention aims at greatly reducing the foaming phenomenon in the FRP tensile strength member for drop optical fiber cables.
- the present invention provides an FR having a reinforcing fiber bound with a thermosetting resin.
- the amount of the residual styrene monomer in the FRP portion was reduced to 0.018% by weight or less by using the FRP tensile strength member for a drop optical fiber cable having a P portion.
- the present invention provides an FRP portion in which reinforcing fibers are bound with a thermosetting resin, and a thermoplastic resin formed on the outer periphery of the FRP portion by covering the outer surface of the FRP portion with an anchor bonding structure.
- the amount of the residual styrene monomer in the FRP portion was set to 0.03% by weight or less.
- thermosetting resin can be composed of a vinyl ester resin.
- the surface of the thermoplastic resin coating layer has been subjected to diameter-regulating processing, and the surface of the coating layer can have a degree of surface irregularity of 2-3 mm / 100 mm or less measured by a laser outer diameter measuring instrument.
- thermoplastic resin coating layer can be composed of LLDPE.
- the FRP section can use glass yarn for the reinforcing fiber.
- the FRP tensile strength member for a drop optical fiber cable can be adjusted to have a weight loss rate of 0.1% or less after drying at 80 ° C. for 40 hours using a hot-air gear oven.
- the amount of residual styrene monomer and / or the weight loss rate is within a predetermined range, so that a drop optical fiber cable is manufactured using these tensile strength members.
- the foaming phenomenon that occurs during the process can be suppressed.
- the coated FRP tensile strength member when used, since the outer periphery of the FRP portion and the inner periphery of the coating layer have an anchor bonding structure, the main body coating layer is fused or adhered to this coating layer. Let Then, the heat shrinkage of the entire drop optical fiber cable can be suppressed, and the optical fiber core can be effectively protected.
- the anchor bonding structure eliminates the need to separately apply an adhesive to the outer periphery of the FRP, thereby eliminating the need for an adhesive, an application process, and equipment, thereby simplifying the process and reducing costs, and is extremely economical. It is a target.
- the exposure of the FRP tensile strength member at the core in the connection operation can be easily peeled off by making a cut in the coating layer.
- the work of retaining the cable in the termination cabinet is safer in a good environment. It can be done easily.
- FIG. 1 shows an example of a drop optical fiber cable using the FRP tensile strength member or the coated tensile strength member according to the present invention.
- Drop optical fiber cable shown in the figure is a drop optical fiber cable using the FRP tensile strength member or the coated tensile strength member according to the present invention.
- optical fiber cores 2 and 3 include optical fiber cores 2 and 3, tensile strength member 4, support wire 5, and main body coating 6.
- the optical fiber cores 2 and 3 are arranged on the center axis of the cable 1 so as to be vertically adjacent to each other.
- the tensile members 4 are arranged in a pair at predetermined intervals above and below the optical fibers 2 and 3.
- the support wire 5 is located above the upper strength member 4 and has a larger diameter than the strength member 4.
- the body coating 6 is formed so as to collectively cover the outer circumferences of the optical fiber cores 2 and 3, the strength member 4 and the support wire 5.
- the tensile strength member 4 includes an FRP tensile strength member having an FRP portion in which reinforcing fibers are bound with a thermosetting resin, or an FRP portion in which reinforcing fibers are bound with a thermosetting resin, and an FRP portion. It is composed of a coated FRP tensile strength member having an outer surface of the FRP portion and a thermoplastic resin coating layer formed by coating with an anchor bonding structure.
- Such an FRP strength member the residual styrene monomer 0.018 weight FRP parts 0/0 (Compared to FRP section).
- the residual styrene monomer In the coated FRP tensile strength material, the residual styrene monomer must be not more than 0.03% by weight (based on the whole coated FRP tensile strength material).
- the coated portion is in contact with the molten main body-coated thermoplastic resin at the time of coating the main body in the manufacturing process of the drop optical cable, and the remaining styrene monomer is volatilized. Or, an abnormality such as foaming of the main body covering portion occurs.
- the measurement of the residual styrene monomer was performed by the following method.
- the amount of the residual styrene monomer is controlled to a predetermined value or less by selecting a highly reactive thermosetting resin and a highly reactive catalyst, securing a curing time, performing post-treatment after curing, and the like. You only have to control it.
- FIG. 2 shows a coated FRP tensile strength member 10 that can be used as the tensile strength member 4 of the drop optical fiber cable.
- the tensile strength member 10 has an FRP (fibre-reinforced thermosetting resin) portion 11 and a coating layer 12 of a thermoplastic resin provided on the outer periphery of the FRP portion 11.
- FRP fuse-reinforced thermosetting resin
- the outer periphery of the FRP tensile strength member 11 and the inner periphery of the coating layer 12 are mutually anchored.
- thermosetting resin In order to obtain such an anchor bonding structure, a method described in JP-B-63-2772, that is, an uncured supplement formed by impregnating an uncured thermosetting resin into a reinforcing fiber bundle is used.
- the hard core portion is covered with the molten thermoplastic resin in a ring shape, and immediately thereafter, the coating layer of the thermoplastic resin is cooled and solidified.
- the interface part of the layer is softened, the thermosetting resin is heated and cured while being in contact with the fluidized state, and then the coated thermoplastic resin is cooled and the core interface made of fiber reinforced thermosetting resin (FRP) And the coated thermoplastic resin may be anchor-bonded.
- FRP fiber reinforced thermosetting resin
- reinforcing fibers that can be used in the FRP portion 11 of the tensile strength member of the present invention, various glass fibers, aromatic polyamide fibers, carbon fibers, and the like are generally used, and are selected according to the required tensile strength and elastic modulus. .
- glass yarns are desired to have properties required from glass fibers such as E, S, and T.
- E-glass is recommended from the viewpoint of economic efficiency.
- a single yarn having a single fiber diameter of 313 ⁇ m and a plurality of yarns that are not twisted is desirably used.
- the glass yarn is selected because, for example, the yarn is twisted at 1 piece / inch or the like, and during the impregnation or drawing step of the thermosetting resin, the glass single fiber is disturbed, slackened, or the like. This is because a non-stretched rod-like material having a small amount of fray and a uniform outer periphery can be obtained.
- the volume content of the glass fiber of the tensile strength member 4 is determined by the required physical properties. However, in the present invention for the purpose of making the diameter smaller, it is approximately 55-7. About 0V 0L% is desirable.
- thermosetting resin that can be used in the present invention is generally a terephthalic acid-based or isophthalic acid-based unsaturated polyester resin, a bielester resin (such as an epoxy acrylate resin), or an epoxy resin.
- a curing catalyst or the like is added to these and used, but a butyl ester resin (epoxy acrylate resin or the like) is particularly preferable because of its properties such as heat resistance.
- the thermoplastic resin used for the coating layer 12 of the uncured reinforcing core portion is selected from resins compatible with the thermoplastic resin of the main body coating portion 6, and a flame-retardant resin is used for the main body coating portion 6. In order to improve the compatibility with the resin, it is desirable to use an adhesive resin or to add a master batch of the adhesive resin. It may be colored by adding a master batch.
- the thermoplastic resin used for the coating layer 12 may have been subjected to various modifications for imparting flame retardancy in accordance with the flame retardation of the main body coating portion 6.
- thermoplastic resin used for the coating layer 12 has a molten or softened state at least at the inner periphery when the thermosetting resin is heat-cured.
- a polyolefin-based resin having a melting point or softening point in a curing temperature range of 110 to 150 ° C is more preferable.
- the FRP section 11 is desirably a cured fiber-reinforced thermosetting resin having an outer diameter of 0.9 mm or less in terms of bending resistance and small diameter.
- the coating thickness more than necessary is a factor that inhibits flame retardancy. Therefore, the thickness of the coating layer 12 is preferably 0.3 mm or less.
- the thickness of the coating layer 12 is preferably 0.08 mm or more before the diameter adjustment. More preferably, the thickness is about 2 mm.
- LDPE low-density polyethylene
- LLDPE linear low-density polyethylene
- the coated FRP tensile strength member 10 used in the drop optical fiber cable of the present invention preferably has a pull-out force of 13N / 1 Omm or more of the FRP portion 11 from the thermoplastic resin used for the coating layer 12. It is. This pull-out force is used as an index of the adhesion force due to the anchor bonding structure, and was measured by the following measurement method.
- the surface of the thermoplastic resin coating layer is subjected to diameter-sizing processing.
- the degree of surface irregularity measured by a laser outer diameter measuring device is 2-3 / 3/100 mm or less. If it exceeds this, a foaming trouble at the time of coating the main body tends to occur easily.
- the coated FRP tensile strength member 10 of the present invention desirably has a weight loss rate of 0.1% by weight or less after drying at 80 ° C. for 40 hours using a hot-air gear oven.
- the above-mentioned limitation of the amount of residual styrene monomer, reduction of the retention of water and the like on the surface of the coating portion and the interface with the FRP, or by giving a secondary heat treatment, can be carried out at 80 ° C for 40 hours.
- the weight loss rate after drying can be 0.1% or less.
- the secondary heat treatment may be a method in which the resin is passed through a heat treatment tank following the step of curing the thermosetting resin, or may be performed after winding.
- the coated uncured linear material was introduced at a speed of 15 mZmin into an 18 m long pressurized steam curing tank provided with a pressure seal portion at an inlet and an outlet to obtain a vapor pressure of 32.5 Pa (145 ° C.).
- a vapor pressure of 32.5 Pa 145 ° C.
- a shaping machine with shaping dies of 0.93mm and 0.80mm inside diameter to shape the coating outer surface and coat
- a coated tensile strength member 10 having an outer diameter of 0.8 mm was obtained, and was continuously wound around a bobbin.
- the bobbin was subjected to a dry heat treatment (secondary heat treatment) in a constant temperature room at 40 ° C. for 40 hours.
- the coated tensile strength body 10 had a glass fiber content of 61.9 VOL% and a drawing force of 15 NZl0 mm.
- a 24-hour heat-resistant bending diameter test at a hot temperature of 80 ° C it cleared 38 mm, and the sample length was _30 at 1000 mm. C ⁇ 80.
- the heat cycle test of C was repeated three times, and the adhesion between the coating layer 12 of the coated tensile strength member 10 and the FRP tensile strength member 11 was observed. The shrinkage of the coating layer 12 hardly occurred.
- the amount of the residual styrene monomer determined by the above-described measurement method was 0.015% by weight.
- the weight reduction rate of the coated FRP tensile strength body by the above-described measurement method was 0.08%, which was a flat average.
- the coated tensile strength body 10 was inserted through a crosshead die of a melt extruder to extrude a flame-retardant polyethylene resin at 175 ° C.
- the film was run at a coating speed of 30 mZmin, and it was determined whether or not foaming abnormality occurred in 100 minutes.
- Example 2 In Comparative Example 1 in which the secondary heat treatment was omitted as compared with Example 1, the weight loss at 80 ° C for 40 hours was 0.25%, and the vapor pressure was 28 Pa (curing bath temperature 140 ° C).
- Example 2 had 0.045% residual styrene and 0.09% weight loss.
- thermosetting resin was an unsaturated polyester resin (Polyset manufactured by Hitachi Chemical Co., Ltd.)
- the hardening temperature was set to 145 ° C and the secondary heat treatment was performed, but the residual styrene was 0.11% and the weight loss was 0.09%.
- the FRP tensile strength material for a drop optical cable which is effective in the present invention, since the foaming phenomenon is greatly reduced, there is no bad appearance and no adverse effect on the optical fiber. Can be.
- FIG. 1 is a cross-sectional view showing an example of a drop optical fiber cable to which the strength member of the present invention can be applied.
- FIG. 2 is an explanatory view of a cross section of a coated FRP tensile strength member according to the present invention. Explanation of reference numerals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ropes Or Cables (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020067011256A KR101081788B1 (ko) | 2003-12-08 | 2004-09-02 | 드롭 광섬유 케이블용 섬유 강화 열경화성 수지제 항장력체 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003409353A JP4116968B2 (ja) | 2003-12-08 | 2003-12-08 | ドロップ光ファイバケーブル用frp製抗張力体 |
JP2003-409353 | 2003-12-08 |
Publications (1)
Publication Number | Publication Date |
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WO2005057263A1 true WO2005057263A1 (ja) | 2005-06-23 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/012736 WO2005057263A1 (ja) | 2003-12-08 | 2004-09-02 | ドロップ光ファイバケーブル用frp製抗張力体 |
Country Status (5)
Country | Link |
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JP (1) | JP4116968B2 (ja) |
KR (1) | KR101081788B1 (ja) |
CN (1) | CN100454065C (ja) |
TW (1) | TW200519442A (ja) |
WO (1) | WO2005057263A1 (ja) |
Families Citing this family (5)
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JP5131728B2 (ja) | 2006-06-02 | 2013-01-30 | 独立行政法人物質・材料研究機構 | 高強力Ti−Ni−Cu形状記憶合金とその製造方法 |
US20100219931A1 (en) | 2007-05-11 | 2010-09-02 | Akira Ishida | Bidirectional shape memory alloy thin film actuator and method for manufacturing shape memory alloy thin film used therefor |
JP2009172995A (ja) * | 2007-12-27 | 2009-08-06 | Ube Nitto Kasei Co Ltd | 熱可塑性樹脂被覆frp線条物及びその製造方法 |
CN102733214B (zh) * | 2011-04-08 | 2016-01-20 | 上海斯瑞科技有限公司 | 光缆用一体式高柔韧性加强芯及其制备方法 |
KR20220011248A (ko) | 2020-07-20 | 2022-01-28 | 대한광통신 주식회사 | 광케이블 및 전원선의 일체형 케이블 |
Citations (12)
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---|---|---|---|---|
JPS632772B2 (ja) * | 1983-06-28 | 1988-01-20 | Ube Nitto Kasei Co | |
JPH0271207A (ja) * | 1988-06-20 | 1990-03-09 | Ube Nitto Kasei Co Ltd | 光ファイバ用保護パイプ及びそれを用いてなる平型光ファイバコード |
JPH0467004A (ja) * | 1990-07-05 | 1992-03-03 | Sumitomo Electric Ind Ltd | 押出成形品の製造方法 |
JPH09110949A (ja) * | 1995-10-17 | 1997-04-28 | Kayaku Akzo Kk | 不飽和ポリエステル樹脂又はビニルエステル樹脂用硬化剤組成物及び硬化方法 |
JPH10104477A (ja) * | 1996-09-26 | 1998-04-24 | Fujikura Ltd | 架空集合屋外用光ケーブル |
JPH10148737A (ja) * | 1996-11-20 | 1998-06-02 | Fujikura Ltd | 架空屋外用光ケーブル |
JPH10148739A (ja) * | 1996-11-18 | 1998-06-02 | Fujikura Ltd | 架空集合屋外用光ケーブル |
JPH10148738A (ja) * | 1996-11-20 | 1998-06-02 | Fujikura Ltd | 架空集合屋外用光ケーブルおよびその製造方法 |
JP2000238143A (ja) * | 1999-02-23 | 2000-09-05 | Ube Nitto Kasei Co Ltd | 繊維強化合成樹脂製線状物 |
JP2003227984A (ja) * | 2002-01-31 | 2003-08-15 | Fujikura Ltd | 光ファイバドロップケーブル |
JP2003253042A (ja) * | 2002-03-05 | 2003-09-10 | Nof Corp | 熱硬化性樹脂用硬化剤、成形材料、硬化成形品およびその製造方法 |
JP2003327716A (ja) * | 2002-05-10 | 2003-11-19 | Japan Composite Co Ltd | 成形品 |
-
2003
- 2003-12-08 JP JP2003409353A patent/JP4116968B2/ja not_active Expired - Lifetime
-
2004
- 2004-09-02 CN CNB2004800365700A patent/CN100454065C/zh active Active
- 2004-09-02 KR KR1020067011256A patent/KR101081788B1/ko active IP Right Grant
- 2004-09-02 WO PCT/JP2004/012736 patent/WO2005057263A1/ja active Application Filing
- 2004-09-10 TW TW093127479A patent/TW200519442A/zh unknown
Patent Citations (12)
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JPS632772B2 (ja) * | 1983-06-28 | 1988-01-20 | Ube Nitto Kasei Co | |
JPH0271207A (ja) * | 1988-06-20 | 1990-03-09 | Ube Nitto Kasei Co Ltd | 光ファイバ用保護パイプ及びそれを用いてなる平型光ファイバコード |
JPH0467004A (ja) * | 1990-07-05 | 1992-03-03 | Sumitomo Electric Ind Ltd | 押出成形品の製造方法 |
JPH09110949A (ja) * | 1995-10-17 | 1997-04-28 | Kayaku Akzo Kk | 不飽和ポリエステル樹脂又はビニルエステル樹脂用硬化剤組成物及び硬化方法 |
JPH10104477A (ja) * | 1996-09-26 | 1998-04-24 | Fujikura Ltd | 架空集合屋外用光ケーブル |
JPH10148739A (ja) * | 1996-11-18 | 1998-06-02 | Fujikura Ltd | 架空集合屋外用光ケーブル |
JPH10148737A (ja) * | 1996-11-20 | 1998-06-02 | Fujikura Ltd | 架空屋外用光ケーブル |
JPH10148738A (ja) * | 1996-11-20 | 1998-06-02 | Fujikura Ltd | 架空集合屋外用光ケーブルおよびその製造方法 |
JP2000238143A (ja) * | 1999-02-23 | 2000-09-05 | Ube Nitto Kasei Co Ltd | 繊維強化合成樹脂製線状物 |
JP2003227984A (ja) * | 2002-01-31 | 2003-08-15 | Fujikura Ltd | 光ファイバドロップケーブル |
JP2003253042A (ja) * | 2002-03-05 | 2003-09-10 | Nof Corp | 熱硬化性樹脂用硬化剤、成形材料、硬化成形品およびその製造方法 |
JP2003327716A (ja) * | 2002-05-10 | 2003-11-19 | Japan Composite Co Ltd | 成形品 |
Non-Patent Citations (1)
Title |
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TOMOKUNI H. ET AL: "Styrene Teikisansei FRP Seikeiyo "POLYLITE" Kyoka Plastic.", vol. 46, no. 6, 15 June 2000 (2000-06-15), pages 253 - 255, XP002989386 * |
Also Published As
Publication number | Publication date |
---|---|
TW200519442A (en) | 2005-06-16 |
JP2005172939A (ja) | 2005-06-30 |
CN1890590A (zh) | 2007-01-03 |
JP4116968B2 (ja) | 2008-07-09 |
KR20060121147A (ko) | 2006-11-28 |
CN100454065C (zh) | 2009-01-21 |
TWI352225B (ja) | 2011-11-11 |
KR101081788B1 (ko) | 2011-11-09 |
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