CN100520468C - Drop optical fiber cable and FRP tension member used for the cable - Google Patents
Drop optical fiber cable and FRP tension member used for the cable Download PDFInfo
- Publication number
- CN100520468C CN100520468C CNB2004800336290A CN200480033629A CN100520468C CN 100520468 C CN100520468 C CN 100520468C CN B2004800336290 A CNB2004800336290 A CN B2004800336290A CN 200480033629 A CN200480033629 A CN 200480033629A CN 100520468 C CN100520468 C CN 100520468C
- Authority
- CN
- China
- Prior art keywords
- tension stress
- lining
- stress body
- inlead
- frp
- 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.)
- Expired - Fee Related
Links
Images
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
- 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
Abstract
A drop optical fiber cable, comprising optical fiber cores, surface coated tension members, and a support cable. The surface coated tension members are formed in a circular shape in cross section by covering fiber-reinforced thermosetting resin tension members with a thermoplastic resin coating layer, and the pair of surface coated tension members are disposed on both upper and lower sides of the optical fiber cores on a same axis at specified intervals. The support cable is disposed on the upper side of the tension members, and the optical fiber cores, surface coated tension members, and support cable are coated together with the thermoplastic resin body coating part. The tension members are formed by applying the thermoplastic resin coating layer onto FRP tension members. In this case, the outer periphery of the FRP tension members is anchored to the inner periphery of the coating layer. The thermoplastic resin used for the coating layer is selected from those resins which are compatible with the resin of the body coating part.
Description
Technical field
The FRP that the present invention relates to inlead optical cable (drop optical fiber cable) and use in this optical cable system tension stress body particularly relates to and can realize lightweight and thin footpathization and be suitable for as the inlead optical cable of the non-metal type of inlead and be applicable to that the FRP of the inlead optical cable of non-metal type makes the tension stress body.
Background technology
Along with the arrival of informationized society, the increaseization of the transport information capacity of internet etc. is able to rapid development to the FTTHization of user's laying optical cable such as Building Building and dwelling house.
As FTTH inlead optical cable, the scheme that has proposed is that the tension stress body uses metal wire (opening communique 2001-No. 337255 referring to the spy, the 2nd page and Fig. 1).
But, when the tension stress body uses metal wire, for fear of by the caused surging of thunder and lightning, then must ground connection.In order to be grounded, aspect construction, require to spend time, need the burden construction cost with it together, become the obstacle of popularizing to each family.Therefore, demand adopts the inlead optical cable of non-metal type of the tension stress body of the non-metal type do not need the ground connection construction always.
Tension stress body as the used non-metal type of this optical cable, can list fibre-reinforced synthetic resin (FRP) system thread, only use the FRP line if replace metal wire tension stress body, then the main body lining was carried out with bonding being difficult for of thermoplastic resin, in bonding inadequate occasion, the optical transmission loss that is caused by thermal history increases, and perhaps causes abnormal conditions such as broken string, can not give full play to function as inlead optical fiber.
In this case, by the periphery coating adhesive at the FRP line that solidifies, the adhesive resin that perhaps is covered also can still be accompanied by spent man-hour, the increase of fee of material so that bonding force is strengthened, and causes cost to increase, so be not very wise move.And bonding undue firmly time the when with FRP when connecting construction, is ill in order to fix and to peel off lining portion to termination box.
, the applicant discloses the be covered manufacture method (with reference to special public clear 63-No. 2772 communiques) of fibre-reinforced synthetic resin stick article of FRP interface and thermoplastic resin lining the carrying out bonding thermoplastic resin of anchoring.
This manufacture method is to carry out according to following step: the uncured shape reinforcement core that the uncured heat-curing resin of reinforcing fiber bundle impregnation the will be formed thermoplastic resin lining of fusion, then immediately behind the coating cooling curing with this thermoplastic resin, it is directed into the curing groove of pressurized high-temperature steam, the interface portion of reinforcement core and this coating is softening, make it with flow state contact and this heat-curing resin is heating and curing, the thermoplastic resin that then will be covered cooling also will be bonding by the core interface and the thermoplastic resin anchoring that is covered that fibre-reinforced heat-curing resin (FRP) constitutes.
But, be used at the club that will make under the situation of tension stress body of inlead optical cable by such manufacture method, there is following illustrated technical matters.
That is, according to disclosed manufacture method in the above-mentioned bulletin communique, for example, with glass fibre as reinforcing fiber, heat-curing resin uses unsaturated polyester (UP), under the situation about being covered with tygon, the problem that exists is that the bonding strength of club gained is 106kg/cm
2(10MPa), the lining surface is not necessarily smooth, and is difficult to obtain all even thin diameter.
In addition, the tension stress body of the employed FRP system of this inlead optical cable is compared with metal tension stress body and is had the technical matters of losing with big bending diameter easily.Bending diameter when losing in order to reduce generation reduces the FRP diameter and gets final product, and is same occasion at reinforcing fiber still, and tension stress reduces then becomes problem.
In this case, only with regard to the improvement of tension stress, can be by reinforcing fiber being replaced as high strength and the high elastic modulus type is solved, but also require to have function (the anti-contraction) to suppressing by the caused contraction that constitutes the resin of body of the variation of environment temperature, so as the means of reduction with the contact area (become and be difficult to bring into play the anti-contracility function) of bulk resin, thin footpathization is not preferred, requiring and existing almost same diameter, and the little FRP of bending radius makes the necessity of tension stress body always.
Summary of the invention
The present invention finishes in view of such existing issue point just, first purpose of the present invention is to make the inlead optical cable, it reinstates the thermoplastic resin lining with optical fibre core and fibre-reinforced heat-curing resin system (below be sometimes referred to as FRP) tension stress body one, makes particularly that have can lightweight and thin footpathization and be suitable for inlead optical cable as the non-metal type of the characteristic of inlead.
Second purpose of the present invention provides and is not easy the FRP tension stress body lost with big bending diameter.
To achieve these goals, the invention provides a kind of inlead optical cable, it has: lining tension stress body, optical fibre core and aforementioned lining tension stress body and aforementioned optical fibre core one reinstated the main body lining portion of thermoplastic resin lining, described lining tension stress body has applied thermoplastic resin on the tension stress body of fibre-reinforced heat-curing resin coating obtains, the periphery of wherein aforementioned lining tension stress body and aforementioned body lining portion merge bonding mutually, and the interior week of aforementioned coating and the periphery anchoring of aforementioned tension stress body are bonding.
Aforementioned lining tension stress body can be that reinforcing fiber and external diameter are to apply 0.3 millimeter or following described coating on 0.9 millimeter or the following described FRP system tension stress body to obtain with the glass fibre.
The coating of the described thermoplastic resin system of aforementioned lining tension stress body can adopt LLDPE.
The pulling capacity of aforementioned lining tension stress body can be the 10N/10 millimeter or more than.
The mode that aforementioned lining tension stress body can be clamped described optical fibre core disposes two in the separating predetermined interval up and down of this optical fibre core.
The reinforcing fiber of aforementioned tension stress body can use glass fiber.
The single fiber diameter of aforementioned glass fiber can be 3～13 microns, and can use the monofilament shape of the multi-filament line also not being twisted with the fingers.
The present invention also provides a kind of FRP system tension stress body, wherein with the heat-curing resin reinforcing fiber that bonds, the stretch modulus of aforementioned reinforcing fiber be 360cN/dtex or more than, and the length growth rate during fracture be 3.5% or more than.
The aforementioned hot curable resin can be a vinyl ester resin.
Aforementioned FRP system tension stress body can be used for inlead optical fiber cable, this inlead optical fiber can have with cable: applied in its periphery thermoplastic resin system coating lining tension stress body and optical fibre core and aforementioned lining tension stress body one are reinstated the main body lining portion of thermoplastic resin lining, wherein, the periphery of aforementioned coating and aforementioned body lining portion can merge bonding mutually, and the interior week of aforementioned coating and the periphery of aforementioned tension stress body are can anchoring bonding.
Aforementioned FRP system tension stress body can be configured according to following mode: form with flat section such as ellipse or rectangle, and with respect to described inlead optical fiber with the bending direction of cable when laying, less thick.
Description of drawings
Fig. 1 is the sectional drawing of an embodiment of expression inlead optical cable of the present invention.
Fig. 2 is the key diagram of assay method of drawing (adhesion) power of the lining tension stress body that uses in the inlead optical cable of the present invention.
Fig. 3 is the tube reducing (ironing of inlead optical cable of the present invention; ご I) Shi Yan key diagram.
Fig. 4 is the sectional drawing of an example of FRP system tension stress body of the present invention and the inlead optical cable that has used this tension stress body.
Fig. 5 is the key diagram when laying inlead optical cable shown in Figure 4.
Fig. 6 is the key diagram of joint used when forming the main body lining portion of inlead optical cable shown in Figure 4.
Fig. 7 is the sectional drawing of another example of expression FRP system of the present invention tension stress body and the inlead optical cable that has used this tension stress body.
Fig. 8 is the key diagram when confirming the laying property of bending of inlead optical cable of the present invention.
Embodiment
Be described in detail being used to implement preferred plan of the present invention based on embodiment and concrete example below.
Fig. 1 is an embodiment of expression inlead optical cable of the present invention.Inlead optical cable 1 shown in this Fig has optical fibre core 2,3, lining tension stress body 6 and Support Line 7 (also being referred to as messenger wire, cable messenger). Optical fibre core 2,3 is so that the neighbouring mode that connects is configured in the center.
Lining tension stress body 6 is that coating 5 linings of the tension stress body 4 usefulness thermoplastic resin systems of fibre-reinforced heat-curing resin system (FRP system) are obtained, and form with circular cross section, a pair of lining tension stress body 6 separates predetermined interval up and down optical fibre core 2,3, and with the mode that this optical fibre core is clamped be configured in coaxial on.
Inlead optical cable 1 according to above-mentioned formation uses Support Line 7 to be erected between electric pole, when being incorporated into user's premises, at first, cut off thin width portion 10, separate Support Line 7, cut off from the part of notch 9 then, take out optical fibre core 2,3, make heart yearn 2,3 be connected with user's side.
Lining tension stress body 6 has applied thermoplastic resin system on the tension stress body 4 of fiber reinforcement curable resin system (FRP system) coating 5 obtains.In this case, the mutual anchoring of interior week of the periphery of FRP system tension stress body 4 and coating 5 is bonding.
Bonding in order to realize anchoring, can adopt the method for record in special public clear 63-No. 2772, promptly, the uncured shape reinforcement core that the uncured heat-curing resin of reinforcing fiber bundle impregnation is formed is used the thermoplastic resin lining of fusion, then immediately behind the coating cooling curing with this thermoplastic resin, it is directed into the curing groove of pressurized high-temperature steam, the interface portion of reinforcement core and this coating is softening, make it with flow state contact and this heat-curing resin is heating and curing, the thermoplastic resin (FRP) that then will be covered cooling also will be bonding by the core interface and the thermoplastic resin anchoring that is covered that fibre-reinforced heat-curing resin constitutes.
As the reinforcing fiber that can use in the present invention, generally be various glass fibre, aromatic polyamide fibre, carbon fiber etc., select according to desired pulling strengrth and elastic modulus.
Using under the situation of glass fibre, for the diameter of FRP being made tension stress body 4 be reduced to 0.9 millimeter or below, the preferred glass silk is selected among glass fibre such as E, S, T according to desired performance, considers from the economy aspect, recommends to use E glass.
As glass fiber, preferably 3～13 microns of the single fiber diameters that is constituted, and the preferred monofilament shape of the multi-filament line also not being twisted with the fingers that uses.Use 11.2～67.5Tex.
In this case, using number big, promptly surpassing the occasion of the glass fiber of 67.5TeX, the circularity when making FRP causes harmful effect, in the follow-up thin layer coating forming operation of being undertaken by thermoplastic resin, is difficult to be covered uniformly.On the other hand, though 11.2Tex or following silk thread also are commercially available, it is miscellaneous that operation becomes, and the cost rising, correspondingly uneconomical.
Selecting glass wire is to carry out according to following: for silk thread, for example, implement 1/inch etc. the twist, by the impregnation or the drawing sequence of heat-curing resin, filamentary disorder of glass or absent-mindedness, tangle fewly, obtain the periphery club that do not stretch uniformly.
The volume containing ratio of the glass fibre of tension stress body 4 determines according to desired rerum natura, is directly turning among the present invention of purpose with further thin, preferably about 60～70 volume %.
In addition, the heat-curing resin that can use in the present invention generally is that terephthalic acid (TPA) system or m-phthalic acid are unsaturated polyester resin, vinyl ester resin or epoxy resin etc., adds to solidify with catalyzer etc. in these resins and uses.
Used thermoplastic resin is to select among the thermoplastic resin with main body lining portion 8 has the resin of compatibility in the coating 5 of uncured shape reinforcement core, when in main body lining portion 8, using flame retardant resin, in order to improve the compatibility with this resin, the preferred adhesive resin that uses, perhaps add the masterbatch of adhesive resin, also can further add the painted masterbatch of using with painted according to the color of main body lining portion 8.
In addition, used thermoplastic resin also can implement to be used to give the various modifications of anti-flammability according to fire-retardantization of main body lining portion 8 in coating 5.In addition, in order to obtain the anchoring bonded structure with FRP tension stress body 4, used thermoplastic resin preferably in coating 5, when being heating and curing of heat-curing resin,, more preferably in the scope of 110～150 ℃ of solidification temperatures, has the polyolefin-based resins of fusing point or softening point at least at interior Zhou Chengxian molten or soft state.
In addition, for lining tension stress body 6, with the glass fiber occasion of reinforcing fiber, from the aspect of anti-song and thin footpathization, preferred external diameter is 0.9 millimeter or following fibre-reinforced heat-curing resin solidfied material.From aspect, thin footpath and the desired anti-flammability of bulk resin aspect, necessary above lining thickness becomes the essential factor that hinders anti-flammability equally, thus coating 5 preferably 0.3 millimeter or below.
In addition, in order to realize the purpose of thin footpathization, the thickness of coating 5 is preferably the thickness of 0.07～0.2 millimeter after shaping.In order to realize such filming, the resin that preferred film has excellent moldability, for example preferred low density polyethylene (LDPE), linear low density polyethylene (LLDPE) etc.
Occasion using LLDPE more preferably has following such characteristic.This characteristic is meant that the MFR that obtains according to JIS K6760 is 1～4g/10min, and density is 0.920～0.940g/cm
3, in the tension test of carrying out according to JIS Z1702, pulling strengrth be 30MPa or more than, 1% elastic modulus is in the scope of 150～250MPa.
In the inlead optical cable of the present invention used lining tension stress body 6 preferably, the pulling capacity of the tension stress body 4 that obtains by thermoplastic resin used in the coating 5 be the 10N/10 millimeter or more than.
This pulling capacity is as the index with the resulting adhesion of anchoring bonded structure, measures by following assay method.
Preparation is equipped with the testing machine of the mensuration anchor clamps 11 that possess the open-work bigger slightly than the external diameter of FRP core, and peel off the coating 5 of the end of lining tension stress body 6 on the other hand, then engrave the scale of 10 millimeters long on coating 5 with razor, preparation has kept the sample S of the coating 5 of 10 millimeters long.As shown in Figure 2, sample S inserts and to lead in the open-work of experimental machine, applies tensile load with the speed of 50 mm/min, tries to achieve pulling capacity from its chart.
Fig. 4 and Fig. 5 are that a FRP system tension stress body of the present invention and an embodiment who has used the inlead optical cable of this tension stress body are adopted in expression.Have optical fibre core 2a, lining tension stress body 6a and Support Line (messenger wire) 7a at the inlead optical cable 1a shown in these figure.
Described lining tension stress body 6a obtains with the coating 5a of the thermoplastic resin system fibre-reinforced heat-curing resin system tension stress body 4a that is covered, and form with flat square cross-section, wherein a pair of lining tension stress body 6a be optical fibre core separate predetermined interval up and down, and with the mode that this optical fibre core is clamped be configured in coaxial on.
In addition, in the periphery of Support Line 7a, the main body lining 8a of portion of toroidal is set, Support Line 7a is connected with thin width portion 10a and other part in the mode of can other parts separating.
Inlead optical cable 1a according to above-mentioned formation uses Support Line 7a to be erected between electric pole, when being pulled into user's premises, at first, as shown in Figure 5, cut off thin width portion 10, separate Support Line 7a, cut off from the part of notch 9a then, take out optical fibre core 2a, heart yearn 2a is connected with user's side.
Under the situation of present embodiment, lining tension stress body 6a has applied thermoplastic resin system on the tension stress body 4a of fiber reinforcement curable resin system (below be referred to as FRP) coating 5a obtains.
In this case, reinforcing fiber as tension stress body 4a, for example among aramid fibre, polyarylate fiber, polyparaphenylene Ben Bing Er oxazole (PBO) fiber etc. the suitable stretch modulus of selecting be 360cN/dtex or more than, and the length growth rate during fracture is 3.5% or above fiber.
And, in this case,, be used to protect the tension stress of optical fibre core 2a not obtained fully if stretch modulus is 360cN/dtex or following, can not bring into play its effect.
And, the length growth rate in when fracture be 3.5% or below, FRP is difficult to bending, and is difficult to reduce the bending radius when making the inlead optical cable.
That is to say, use continuously and allow that bending radius becomes big, makes and can not lay with big bending radius when laying.(say that indirectly the minimum bend diameter is little, can reduce the bending radius (diameter) when laying), preferred stretch modulus be 480cN/dtex or more than.
As the reinforcing fiber that uses, the single fiber diameter that is constituted is 10～15 microns, and the fiber of the so-called multifilament shape that the multi-filament line is also twisted with the fingers does not preferably use 500～3500dtex.
In this case, using number big, promptly surpassing the occasion of the reinforcing fiber of 3500dtex, the circularity when making FRP causes harmful effect, in the follow-up thin layer coating forming operation of being undertaken by thermoplastic resin, is difficult to be covered uniformly.
And, the doubling variation of monofilament, the tensile property that might become when FRPization is insufficient.On the other hand, though 500dtex or following silk thread also are commercially available, it is miscellaneous that operation becomes, and the cost rising, correspondingly uneconomical.
In addition, the operable heat-curing resin of bonding of reinforcing fiber of the present invention generally is that terephthalic acid (TPA) system or m-phthalic acid are unsaturated polyester resin, vinyl ester resin (Epocryl etc.) or epoxy resin etc., adds to solidify with catalyzer etc. in these resins and uses.From rerum naturas such as thermotolerances, particularly vinyl ester resin (Epocryl etc.) is preferred.
Used thermoplastic resin is to select among the thermoplastic resin with main body coating 8a has the resin of compatibility in the coating 5a of uncured shape reinforcement core, when in the main body lining 8a of portion, using flame retardant resin, in order to improve the compatibility with this resin, the preferred adhesive resin that uses, perhaps add the masterbatch of adhesive resin, also can further add the painted masterbatch of using with painted according to the color of main body lining portion.
And used thermoplastic resin also can implement to be used to give the various modifications of anti-flammability according to fire-retardantization of the main body lining 8a of portion in coating 5a.In addition, in order to obtain the structure bonding with the FRP anchoring, used thermoplastic resin preferably in coating 5a, when being heating and curing of heat-curing resin,, more preferably in the scope of 110～150 ℃ of solidification temperatures, has the polyolefin-based resins of fusing point or softening point at least at interior Zhou Chengxian molten or soft state.
In addition, for FRP portion, with the glass fiber occasion of reinforcing fiber, from the aspect of anti-song and thin footpathization, preferred external diameter is 0.9 millimeter or following fibre-reinforced heat-curing resin solidfied material (more preferably 0.6 millimeter or following).Same from aspect, thin footpath and do not make coating 5a have the occasion of anti-flammability, promptly bulk resin requires the occasion of anti-flammability, and necessary above lining thickness becomes the essential factor that hinders anti-flammability, thus coating 5 preferably 0.3 millimeter or below.
In addition, about the thickness of coating 5a, the coating thickness before the shaping preferably 0.08 millimeter or more than, in order to realize the purpose of thin footpathization, superficial layer is carried out shaping, more preferably thickness is 0.07～0.2 millimeter thus.
For with the lining thin thickness membranization before the shaping, the resin that preferred film has excellent moldability, for example preferred low density polyethylene (LDPE), linear low density polyethylene (LLDPE) etc.
There is no particular limitation for the shape of FRP system lining tension stress body 6a of the present invention, form with flat section such as ellipse or rectangle, particularly when laying inlead optical cable 1, for bending direction (left and right directions among Fig. 4), dispose lessly (with reference to Figure 4 and 5) by the thickness of FRP being made tension stress body 3, bending radius can be further reduced, and laying property can be further improved.
Fig. 6 represents FRP system tension stress body of the present invention and has used another embodiment of the inlead optical cable of this tension stress body, same as the previously described embodiments or suitable part, use same figure denote, and omit its explanation, following simultaneously is described in detail its unique point.
Inlead optical cable 1b in the figure has optical fibre core 2b, lining tension stress body 6b and Support Line 7b.Described lining tension stress body 6b obtains with the coating 5b of the thermoplastic resin system fibre-reinforced heat-curing resin system tension stress body 4b that is covered, and form with circular cross section, wherein a pair of lining tension stress body 6b be optical fibre core 2b separate predetermined interval up and down, and with the mode that this optical fibre core is clamped be configured in coaxial on.
In addition, in the periphery of Support Line 7b the main body lining 8b of portion of toroidal is set, Support Line 7b is connected with thin width portion 10b and other part in the mode of can other part separating.Such formation comes down to identical with the foregoing description.
Reinforcing fiber as tension stress body 4b, for example among aramid fibre, polyarylate fiber, polyparaphenylene Ben Bing Er oxazole (PBO) fiber etc. the suitable stretch modulus of selecting be 360cN/dtex or more than, and the length growth rate during fracture is 3.5% or above fiber.The embodiment of Gou Chenging also has equal action effect with the foregoing description like this.
Below embodiment more specifically of the present invention is described, but the invention is not restricted to following embodiment.
Concrete example 1
(the Mitsui Chemicals corporate system: the resin that has added the Thermocurable catalyzer H8100) contains in the immersion trough at vinyl ester resin, import 9 in the E glass fiber that filament diameter is 10 microns 22.5Tex (day eastern textile company system: ECEN225 1/01.0 Z R) by yarn guide, import the throttle nozzle that has reduced internal diameter by stages then, with uncured shape resin drawing and forming, obtain external diameter and be 0.4 millimeter thin footpath club, this club is passed through from the right angle mould (200 ℃) that melt extrudes machine, by being 2.4 by the MI that has added the black masterbatch, density is 0.921g/cm
3, 1% elastic modulus that 30 microns casting films obtains is that (Japanese ユ ニ カ-corporate system: TUF2060), being covered into lining thickness annularly is 0.21 millimeter, is directed into bosh immediately, with the lining portion cooling curing on surface for the LLDPE resin of 170MPa.
Then, this uncured thread that is covered is directed into the steam under pressure curing groove that is provided with pressurization portion at entrance and exit, in vapor pressure is to be cured under the 23.5Pa, then be directed into and have in the reshaper of shaping mould that the internal diameter that is heated to 265 ℃ is 0.93 millimeter and 0.70 millimeter, the lining outer peripheral face is carried out shaping, the external diameter that obtains being covered is 0.7 millimeter a lining tension stress body 6, is wound on the bobbin with continuous shape.
The glass fibre containing ratio of this tension stress body 6 is 63.5 volume %, and the pulling capacity of using mensuration anchor clamps shown in Figure 2 11 to measure is 12N/10mm.In addition, in 24 hours heat-resisting bending diameter test of 80 ℃ of heating, remove (clear) 30 millimeters, be 1000 millimeters with sample length and under-30 ℃～80 ℃, repeat 3 thermal cycles test, observe the coating 5 of lining tension stress body 6 and the bonding situation of tension stress body 4, coating 5 does not almost shrink.
As experimental example, the result is as shown in following table 1 with the pulling capacity of the occasion of the solidification temperature change when the manufacturing of lining tension stress body 6, heat-resisting bendability.
Use this lining anti-tension line to make the inlead optical cable 1 of formation shown in Figure 1 according to following method.
Use external diameters to be 1.2 millimeters steel wire, to use optical fibre core 2,3 and the above-mentioned lining tension stress body 6 of 0.25 millimeter of 2 φ as Support Line 7, they are passed in the right angle mould so that predetermined arranged spaced is also slotting, form main body lining portion 8 with the flame retardant polyethylene resin, obtain having the inlead optical cable 1 of notch 9 at central portion.
The tube reducing characteristic of resulting inlead optical cable 1 is measured with the tube reducing testing machine of mensuration series shown in Figure 3.In Fig. 3, the 1st, as the inlead optical cable of subjects, the 12,13, the 14th, traction rope, and 15 are bend pipes of inserting logical optical cable 1, carry out bending with the curvature of R300 millimeter, the 16th, apply the weight of predetermined load by 12 pairs of optical cables 1 of traction rope.
Using this testing machine, is that 34.3N, tube reducing length are 1m, repeat 5 temperature conditions and be-30 ℃ to+80 ℃ thermal cycle in load, and mensuration property is the transmission loss under the light source of 1550 nanometers at wavelength.Measurement result is shown in the following table 2.
For the inlead optical cable of manufacturing experimently by the lining tension stress body 6 of concrete example 11, do not find the contraction of each coating.
Concrete example 2,3
Except the vapor pressure of the steam under pressure in the concrete example 1 being solidified groove is set at 15.7Pa (concrete example 2), 32.4Pa (concrete example 3), temperature is beyond being cured under 125 ℃ and 145 ℃ in solidifying groove, step according to same with concrete example 1 obtains the anti-tension line that is covered.
The pulling capacity of the lining anti-tension line of gained is 11.3 (concrete examples 2), 15N/10mm (concrete example 3), about 80 ℃ of heat-resisting bending diameter tests of 24 hours of heating down, has all removed 30 millimeters.
Use the lining anti-tension line of concrete example 2,3, according to making the inlead optical cable with the same step of concrete example 1, the transmission loss in the tube reducing test of resulting inlead optical cable does not increase, and the transmission loss in the thermal cycle test does not increase yet.
Comparative example 1
Except the vapor pressure of the steam under pressure in the concrete example 1 being solidified groove is set at 8.8Pa, solidifies that temperature is set at 115 ℃ in the groove, according to making lining tension stress body with the same step of concrete example 1.The pulling capacity of the lining anti-tension line of gained is 7N/10mm, for 30 mm dias 80 ℃ of down heat-resisting bending diameters tests of 24 hours of heating, find that all samples lose, 30 mm dias are not removed.
Comparative example 2
Use density to be 0.928g/cm the coated with resin of the uncured thin footpath club in the concrete example 1
3MFR is that 1.3g/10min, pulling strengrth are that 18MPa, 1% elastic modulus are LLDPE resin (Japanese ユ ニ カ-corporate system: NUCG-5350) of 340MPa, being covered into lining thickness annularly is 0.21 millimeter, is directed into bosh immediately, with the lining portion cooling curing on surface.
Then, this uncured thread that is covered is directed into the steam under pressure curing groove that is provided with pressurization portion at entrance and exit, in vapor pressure is to be cured under the 23.5Pa, then be directed into and have in the reshaper of shaping mould that the internal diameter that is heated to 265 ℃ is 0.93 millimeter and 0.70 millimeter, the lining outer peripheral face is carried out shaping, the external diameter that obtains being covered is 0.7 millimeter a lining tension stress body 6, is wound on the bobbin with continuous shape.
Resulting lining tension stress body part has the bad portion of curing that is caused by the pin hole that is covered.Can not satisfy rerum natura as the tension stress body.
Comparative example 3,4
Change the glass fiber of the 22.5Tex of concrete example 1, use 3 67.5TeX glass fiber (comparative example 3), use 3 to close the silk (comparative example 4) of twisting with the fingers and obtaining by 3 22.5Tex silks as each twisted filament, in addition, according to the same step of the concrete example 1 tension stress body that obtains being covered.
Resulting lining tension stress body does not disperse glass fibre equably in the section of FRP portion, for sub-shape of rice dumpling and circularity degeneration, if bending then has directivity, can not use as the tension stress body.
Particularly,, in the impregnation operation of unsaturated polyester resin, close the twisted filament line and untie for the comparative example 4 that has used 3 to close twisted filament, produce between silk thread length uneven, fluffing etc. takes place.Therefore, in the lining operation of thermoplastic resin, produce pin hole, after curing, produce partly and solidify bad part.
And the periphery of the FRP of resulting lining tension stress body is not uniformly, and the lining thickness that is shaped as behind the diameter of 0.70 φ is uneven, exposes FRP portion sometimes partly, is unsuitable as the tension stress body.It is believed that this is owing to underlying cause causes.The dispersion of (external diameter is in 0.4 millimeter in this comparative example) glass fibre is easy to become insufficient and inhomogeneous in predetermined size.
Table 1
| Lining adhesion (N/cm) | 5 tests of 80 ℃ of 24 hours 30mm φ of heat-resisting bending diameter | Thermal cycle-30 ℃ → 80 |
|
| Concrete example 1 | 12 | 5/5?OK | 0 |
| Concrete example 2 | 11.3 | 5/5?OK | 0 |
| Concrete example 3 | 15 | 5/5?OK | 0 |
| Comparative example 1 | 7 | 0/5?NG | 0 |
Table 2
| The tube reducing characteristic | Thermal cycle-30 ℃ → 80 ℃ of 5 circulations | |
| Concrete example 1 | Well | Well |
| Concrete example 2 | Well | Well |
| Concrete example 3 | Well | Well |
| Comparative example 1 | Bad | Bad |
Remarks: transmission loss is being good smaller or equal to 0.3dB/km
Can find out obviously that from above concrete example and comparative example inlead optical cable of the present invention is reinstated thermoplastic resin with the lining tension stress body that applied the thermoplastic resin coating and obtain on the tension stress body of fibre-reinforced heat-curing resin solidfied material system and optical fibre core one and carried out the main body lining and obtain.External week of tension stress and the main body of will being covered lining is merged; has the anchoring bonded structure week in the periphery of the fiber reinforcement heat-curing resin solidfied material system tension stress body of lining tension stress body and the coating; so the tension stress body has suppressed the thermal shrinkage of main body lining; protect optical fibre core effectively, satisfied the test of thermal cycle and tube reducing.
In addition, inlead optical cable of the present invention has the anchoring bonded structure, thus in connecting operation the exposing of the tension stress body of core, by on coating, engraving cut, can easily peel off.Thus, get or require to use the inlead optical cable of the existing bonding agent of solvent to compare with having used to cut, can easily carry out under the good environment in safety to the operation that termination box is fixing by cutlery.According to the present invention, can provide the inlead optical cable of the non-metal type of thin footpath and practicality.
Concrete example 4
(Thermocurable catalyzer (chemical drug ア Network ゾ corporate system, カ De have been added among Japan composite system: the エ ス -H8100) at vinyl ester resin
StarNetwork ス B-CH 50:4 part, カ ヤ Block チ Le B:1 part) resin contains in the immersion trough, importing the ultimate elongation rate by yarn guide is 4.6%, stretch modulus is contraposition class aramid fibre (Supreme Being people's corporate system: テ Network ノ-ラ T240 of 520cN/dtex, filament diameter is 12 microns, 1 on multifilament 1670dTex), import the throttle nozzle that has reduced internal diameter by stages then, with uncured shape resin drawing and forming, obtain external diameter and be 0.5 millimeter thin footpath club, this club is passed through from the right angle mould (200 ℃) that melt extrudes machine, by being 2.4 by the MI that has added the black masterbatch, density is 0.921g/cm
3, 1% elastic modulus that 30 microns casting films obtains is that (Japanese ユ ニ カ-corporate system: TUF2060), being covered into lining thickness annularly is 0.25 millimeter, is directed into bosh immediately, with the lining portion cooling curing on surface for the LLDPE resin of 170MPa.
Then, it is that the steam under pressure of 18m solidifies groove that this uncured thread that is covered is directed into the length that is provided with pressurization portion at entrance and exit with 15 meters/minute speed, in vapor pressure is that (145 ℃) are cured under the 32.5Pa, then be directed into and have in the reshaper of shaping mould that the internal diameter that is heated to 210～250 ℃ by stages is 1.0 millimeters and 0.8 millimeter, the lining outer peripheral face is carried out shaping, the external diameter that obtains being covered is the lining tension stress body 6b of 0.8 millimeter circular cross section, is wound on the bobbin with continuous shape.Then, the dry heat of in 40 ℃ constant temperature enclosure bobbin being carried out 40 hours is handled (secondary heat treatment).
The reinforcing fiber containing ratio of the FRP portion of this lining tension stress body 6b is 61.1 volume %, and minimum bend diameter (with lining tension stress body is ring-type, carries out bending so that ring diminishes the ring diameter before just in time causing fail in bending) is 6 millimeters.
Concrete example 5
Using the ultimate elongation rate is 3.6%, and stretch modulus is the contraposition class aramid fibre (East レ ヂ of 490cN/dtex
ユPort Application corporate system: ケ Block ラ-29, filament diameter are 12 microns, 1670dTex) 1 on multifilament as reinforcing fiber, in addition, adopt the lining tension stress body 6b that obtains circular cross section with the same method of concrete example 4.
The reinforcing fiber containing ratio of the FRP portion of this lining tension stress body 6b is 58.9 volume %, and minimum bend diameter (making lining tension stress body is ring-type, carries out bending so that ring diminishes the ring diameter before just in time causing fail in bending) is 5 millimeters.
About concrete example 4 and this tension stress body of 5 resulting linings 6b, carry out respectively in 24 hours heat-resisting bending diameter test of 80 ℃ of heating, 30 millimeters have been removed, be 1000 millimeters with sample length and under-30 ℃ → 80 ℃, repeat 3 thermal cycles test, observe the coating 5b of lining tension stress body 6b and the bonding situation of tension stress body 4b, the contraction of coating does not all almost take place in both sides, demonstrates good result.
Secondly, in the right angle mould, import enameling list steel wire as 1.2 millimeters of 1 φ of Support Line 7b, 2 concrete example 1 resulting lining tension stress body 6b, as 1 of the single mode fibre of 0.25 millimeter of the φ of optical fibre core 2b, use flame retardant polyethylene (Japanese ユ ニ カ-corporate system: NUC9739) as the formation resin of the main body lining 8b of portion, mouth mould with shape shown in Figure 7 is extruded and is covered, in the warm water cooling bath of adjustment to 60 ℃, carry out 1 cooling immediately, then carry out 2 coolings, obtain the inlead 1b of section structure shown in Figure 6 with water-cooling groove.
In order to confirm the laying property of resulting inlead 1b, as shown in Figure 8, with r=15 millimeter (diameter is 30 millimeters) when laying, problem that the result does not take place that FRP loses etc. has demonstrated good result in the wall angle part.
Comparative example 5
Using the ultimate elongation rate is 3.3%, and stretch modulus is the contraposition class aramid fibre (East レ ヂ of 670cN/dtex
ユPort Application corporate system: ケ Block ラ-129, filament diameter are 12 microns, 1670dTex) 1 on multifilament as reinforcing fiber, in addition, adopt and the same method of the concrete example 4 tension stress body that obtains being covered.
The reinforcing fiber containing ratio of the FRP portion of this lining tension stress body is 58.9 volume %, and minimum bend diameter (making lining tension stress body is ring-type, carries out bending so that ring diminishes the ring diameter before just causing fail in bending) is 8 millimeters.
Comparative example 6
Using the ultimate elongation rate is 2.4%, and stretch modulus is the contraposition class aramid fibre (East レ ヂ of 780cN/dtex
ユPort Application corporate system: ケ Block ラ-49, filament diameter are 12 microns, 1670dTex) 1 on multifilament as reinforcing fiber, in addition, adopt and the same method of the concrete example 4 tension stress body that obtains being covered.
The reinforcing fiber containing ratio of the FRP portion of this lining tension stress body is 55.8 volume %, and minimum bend diameter (making lining tension stress body is ring-type, carries out bending so that ring diminishes the ring diameter before just in time causing fail in bending) is 10.5 millimeters.
Can obviously find out from above concrete example and comparative example, according to FRP system tension stress body of the present invention, can under the situation that does not reduce desired tension stress, resistance to compression, obtain the little FRP system tension stress body of bending radius, by using this FRP system tension stress body, can obtain the good inlead optical cable of laying property, so can obtain following item.
Promptly, the tension stress body of FRP system comprises those shown in the above-mentioned concrete example 1～3, the problem of comparing existence with metal tension stress body is, lose with big bending diameter easily, bending diameter when losing in order to reduce generation, reducing the FRP diameter and get final product, is same occasion at reinforcing fiber still, and tension stress reduces then becomes problem.
In this case, only with regard to the improvement of tension stress, can be by reinforcing fiber being replaced as high strength and the high elastic modulus type is solved, but also require to have function (the anti-contraction) to suppressing by the caused contraction that constitutes the resin of body of the variation of environment temperature, so as the means of reduction with the contact area (become and be difficult to bring into play the anti-contracility function) of bulk resin, thin footpathization is not preferred, requiring and existing almost same diameter, and the little FRP of bending radius makes the necessity of tension stress body always.FRP system tension stress body of the present invention can satisfy such requirement fully.
According to inlead optical cable of the present invention, lightweight and thin footpathization are possible, so it can be effectively utilized the optical fiber as the user's that is laid in premises.
In addition, according to FRP system tension stress body of the present invention, can under the situation that does not reduce desired tension stress, resistance to compression, obtain the little FRP system tension stress body of bending radius, by using this FRP system tension stress body, obtained the good inlead optical fiber of laying property, when being applied to user's dwelling house, can effectively utilize.
Claims (5)
1, a kind of inlead optical cable, it has lining tension stress body, optical fibre core and aforementioned lining tension stress body and aforementioned optical fibre core one is reinstated the main body lining portion of thermoplastic resin lining, wherein said lining tension stress body has applied thermoplastic resin on the FRP of the heat-curing resin that is strengthened by reinforcing fiber system tension stress body coating obtains, it is characterized in that, the periphery of aforementioned lining tension stress body and aforementioned body lining portion merge bonding mutually, and the interior week of aforementioned coating and the periphery anchoring of aforementioned tension stress body are bonding;
Described heat-curing resin uses vinyl ester resin, and the thermoplastic resin of described coating has following properties simultaneously: the MFR that obtains according to JIS K6760 is 1～4g/10min, and density is 0.920～0.940g/cm
3, in the tension test of carrying out according to JIS Z1702, pulling strengrth be 30MPa or more than, 1% elastic modulus is in the scope of 150～250MPa;
Thickness described lining tension stress body applies shaping on external diameter is 0.9 millimeter or following described FRP system tension stress body after is that 0.07～0.2 millimeter described coating obtains; And
The stretch modulus of described reinforcing fiber be 360cN/dtex or more than, and the length growth rate in when fracture be 3.5% or more than.
2, inlead optical cable according to claim 1 is characterized in that, the pulling capacity of described lining tension stress body be the 10N/10 millimeter or more than.
According to claim 1 or 2 described inlead optical cables, it is characterized in that 3, described lining tension stress body disposes two in the mode of clamping described optical fibre core in the separating predetermined interval up and down of this optical fibre core.
4, inlead optical cable according to claim 1 is characterized in that, described FRP system tension stress body is configured according to following mode: form with flat section, and for the bending direction of described inlead optical cable when laying, thickness disposes lessly.
5, inlead optical cable according to claim 4 is characterized in that, described flat section is ellipse or rectangle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP385202/2003 | 2003-11-14 | ||
| JP2003385202A JP2005148373A (en) | 2003-11-14 | 2003-11-14 | Frp made tension member and drop optical fiber cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1882863A CN1882863A (en) | 2006-12-20 |
| CN100520468C true CN100520468C (en) | 2009-07-29 |
Family
ID=34587352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800336290A Expired - Fee Related CN100520468C (en) | 2003-11-14 | 2004-04-28 | Drop optical fiber cable and FRP tension member used for the cable |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2005148373A (en) |
| KR (1) | KR20060120097A (en) |
| CN (1) | CN100520468C (en) |
| TW (1) | TW200516284A (en) |
| WO (1) | WO2005047950A1 (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449347C (en) * | 2007-06-19 | 2009-01-07 | 上海晓宝增强塑料有限公司 | Aramid fiber reinforced plastic reinforcement, and its preparing process and use |
| US7630605B2 (en) | 2007-06-26 | 2009-12-08 | Corning Cable Systems Llc | Optical fiber assemblies having relatively low-levels of water-swellable powder and methods therefor |
| JP5306614B2 (en) * | 2007-08-09 | 2013-10-02 | 古河電気工業株式会社 | Fiber optic cable |
| JP2009172995A (en) * | 2007-12-27 | 2009-08-06 | Ube Nitto Kasei Co Ltd | Thermoplastic resin-coated frp cable and method of manufacturing the same |
| US7916989B2 (en) | 2008-07-31 | 2011-03-29 | Corning Cable Systems Llc | Optical fiber assemblies having a powder or powder blend at least partially mechanically attached |
| ES2640011T3 (en) | 2008-08-15 | 2017-10-31 | Corning Optical Communications LLC | Fiber optic assembly and manufacturing methods |
| CA2737934C (en) | 2008-09-23 | 2017-05-16 | Corning Cable Systems Llc | Fiber optic cables and assemblies for fiber toward the subscriber applications |
| US8515236B2 (en) * | 2009-06-09 | 2013-08-20 | Corning Cable Systems Llc | Fiber optic drop cable assembly for deployment on building walls |
| JP5431827B2 (en) * | 2009-08-11 | 2014-03-05 | 宇部エクシモ株式会社 | Manufacturing method of substantially rectangular thermoplastic resin-coated FRP filament, and drop optical fiber cable using the FRP filament |
| EP2508926A4 (en) * | 2009-12-02 | 2017-06-21 | Fujikura, Ltd. | Optical fiber cable |
| JP6017415B2 (en) | 2010-04-30 | 2016-11-02 | コーニング オプティカル コミュニケイションズ リミテッド ライアビリティ カンパニー | Optical fiber cable with access feature and method of manufacturing the same |
| CN101923199B (en) * | 2010-08-20 | 2012-06-13 | 烽火通信科技股份有限公司 | Method for preparing integrated optical cable of fibre reinforced plastic reinforcement and optical cable |
| AU2011320659B2 (en) | 2010-10-28 | 2015-08-27 | Corning Cable Systems Llc | Fiber optic cables with extruded access features and methods of making fiber optic cables |
| WO2012071490A2 (en) | 2010-11-23 | 2012-05-31 | Corning Cable Systems Llc | Fiber optic cables with access features |
| US9274302B2 (en) | 2011-10-13 | 2016-03-01 | Corning Cable Systems Llc | Fiber optic cables with extruded access features for access to a cable cavity |
| US9323022B2 (en) | 2012-10-08 | 2016-04-26 | Corning Cable Systems Llc | Methods of making and accessing cables having access features |
| US8682124B2 (en) | 2011-10-13 | 2014-03-25 | Corning Cable Systems Llc | Access features of armored flat fiber optic cable |
| US9201208B2 (en) | 2011-10-27 | 2015-12-01 | Corning Cable Systems Llc | Cable having core, jacket and polymeric jacket access features located in the jacket |
| US9176293B2 (en) | 2011-10-28 | 2015-11-03 | Corning Cable Systems Llc | Buffered fibers with access features |
| US8909014B2 (en) | 2012-04-27 | 2014-12-09 | Corning Cable Systems Llc | Fiber optic cable with access features and jacket-to-core coupling, and methods of making the same |
| JP2013257396A (en) * | 2012-06-12 | 2013-12-26 | Fujikura Ltd | Optical fiber cable |
| US9482839B2 (en) | 2013-08-09 | 2016-11-01 | Corning Cable Systems Llc | Optical fiber cable with anti-split feature |
| CN103984071B (en) * | 2014-05-06 | 2017-02-15 | 江苏南方通信科技有限公司 | Novel all-dielectric communication optical cable |
| TWI721596B (en) * | 2018-10-11 | 2021-03-11 | 日商藤倉股份有限公司 | Optical fiber cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6115522A (en) * | 1997-06-18 | 2000-09-05 | Nippon Telegraph And Telephone Corporation | Optical fiber cord and optical cord ribbon |
| JP2003227984A (en) * | 2002-01-31 | 2003-08-15 | Fujikura Ltd | Optical fiber drop cable |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2793621B2 (en) * | 1988-06-20 | 1998-09-03 | 宇部日東化成 株式会社 | Flat optical fiber cord |
| JP2717330B2 (en) * | 1991-09-25 | 1998-02-18 | 株式会社熊谷組 | Epoxy resin composition for high tension material made of FRP for pultrusion molding |
| JP3845136B2 (en) * | 1995-12-06 | 2006-11-15 | 古河電気工業株式会社 | Optical tape cord and optical fiber cable |
| JPH09159884A (en) * | 1995-12-06 | 1997-06-20 | Furukawa Electric Co Ltd:The | Optical cord |
| JPH10104477A (en) * | 1996-09-26 | 1998-04-24 | Fujikura Ltd | Aerial assembled outdoor service optical cable |
| JPH10148739A (en) * | 1996-11-18 | 1998-06-02 | Fujikura Ltd | Aerial assembled outdoor optical cable |
| JPH10148737A (en) * | 1996-11-20 | 1998-06-02 | Fujikura Ltd | Aerial outdoor optical cable |
| JPH10148738A (en) * | 1996-11-20 | 1998-06-02 | Fujikura Ltd | Aerial assembled outdoor optical cable and its manufacture |
| JPH1172669A (en) * | 1997-07-03 | 1999-03-16 | Furukawa Electric Co Ltd:The | Optical fiber cord |
| JP2000238143A (en) * | 1999-02-23 | 2000-09-05 | Ube Nitto Kasei Co Ltd | Fiber-reinforced synthetic resin linear material |
| US6434306B1 (en) * | 2000-04-17 | 2002-08-13 | Sumitomo Electric Industries, Ltd. | Optical cable and manufacturing method thereof |
| JP3783946B2 (en) * | 2002-08-02 | 2006-06-07 | 昭和電線電纜株式会社 | Fiber optic cable |
| JP4077300B2 (en) * | 2002-11-11 | 2008-04-16 | 宇部日東化成株式会社 | Drop optical fiber cable |
-
2003
- 2003-11-14 JP JP2003385202A patent/JP2005148373A/en active Pending
-
2004
- 2004-04-28 CN CNB2004800336290A patent/CN100520468C/en not_active Expired - Fee Related
- 2004-04-28 KR KR1020067009099A patent/KR20060120097A/en not_active Application Discontinuation
- 2004-04-28 WO PCT/JP2004/006188 patent/WO2005047950A1/en active Application Filing
- 2004-04-29 TW TW093112038A patent/TW200516284A/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6115522A (en) * | 1997-06-18 | 2000-09-05 | Nippon Telegraph And Telephone Corporation | Optical fiber cord and optical cord ribbon |
| JP2003227984A (en) * | 2002-01-31 | 2003-08-15 | Fujikura Ltd | Optical fiber drop cable |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005047950A1 (en) | 2005-05-26 |
| CN1882863A (en) | 2006-12-20 |
| KR20060120097A (en) | 2006-11-24 |
| TW200516284A (en) | 2005-05-16 |
| JP2005148373A (en) | 2005-06-09 |
| TWI297788B (en) | 2008-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100520468C (en) | Drop optical fiber cable and FRP tension member used for the cable | |
| JP3176390B2 (en) | Method of manufacturing reinforced plastic armored cable | |
| US8165438B2 (en) | Optical cable and method for producing an optical cable | |
| JPH05142454A (en) | Composite buffer cable | |
| CN113325532B (en) | Layer-stranded optical fiber ribbon cable and production process | |
| JPS6128092A (en) | Composite wire body and its production | |
| US20030072545A1 (en) | Drop cable and method of fabricating same | |
| CN201845113U (en) | Circular fiber-to-home indoor optical cable | |
| US6775445B2 (en) | Optical fiber drop cable | |
| JP4077300B2 (en) | Drop optical fiber cable | |
| CN100454065C (en) | Frp tension member for drop optical fiber cable | |
| JPH0271207A (en) | Protective pipe for optical fiber and flat type optical fiber code formed by using this pipe | |
| JPH10148739A (en) | Aerial assembled outdoor optical cable | |
| CN203287582U (en) | Tensile stress wire made of FRP and inlead optical fiber cable employing same | |
| CN111399145A (en) | Reinforced optical cable | |
| CN213302614U (en) | Micro-pipeline optical cable | |
| CN111965774B (en) | Low-temperature-resistant special optical cable and production process | |
| CN115877529B (en) | Fiber reinforced optical cable and manufacturing method | |
| JP3472149B2 (en) | Spacer for optical fiber cable and method of manufacturing the same | |
| JP2005037641A (en) | Optical fiber cable | |
| JP2023020683A (en) | Optical fiber cable | |
| JPS6273214A (en) | Optical fiber strand coated with resin curable by uv rays | |
| CN117492154A (en) | Tight sleeve optical unit, special optical cable comprising same and preparation methods of tight sleeve optical unit and special optical cable | |
| CN115542488A (en) | Full-dry type optical fiber ribbon cable and processing method thereof | |
| JPS62194209A (en) | Optical fiber and its manufacture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20210428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |