CN102313945B - Circular rubber-covered-wire optical cable and manufacturing method thereof - Google Patents
Circular rubber-covered-wire optical cable and manufacturing method thereof Download PDFInfo
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Abstract
A circular rubber-covered-wire optical cable and a manufacturing method thereof of the invention relate to a compact tensile antiflaming rubber-covered-wire optical cable used for indoor wiring and the manufacturing method thereof. In the cable, metal or non-metallic strengthening pieces are used to perform parallel reinforcement. Colored optical fibers and tightly packaged fibers, which have unequal quantities, are in the middle of the parallel strengthening pieces. Slotting circle sheaths cover the fibers and the strengthening pieces. Butterfly-type rubber-covered-wire optical cable is suitable for vertical, horizontal wiring or pipeline wiring in a FTTH building. Bending performance is excellent and tensile capacity is good. Construction operation is easy to be performed. A fiber unit, the strengthening pieces and the slotting sheath are comprised. The fiber unit is arranged in the middle part of the circular rubber-covered-wire optical cable. The strengthening pieces are parallelly arranged on two sides of the fiber unit. The slotting sheaths cover the fiber unit and the strengthening pieces.
Description
Technical field
What circular rubber-covered-wire optical cable of the present invention and preparation method thereof related to is a kind of house wiring fire-retardant covered wire cable of compact tension and preparation method thereof, this cable adopts metal or non-metal reinforcement member to do parallel reinforcement, be colored optical fiber or the tightly packaged fiber that quantity does not wait in the middle of the parallel reinforcement, optical fiber and reinforcement outside are coated with the fluting circular jacket.The butterfly covered wire cable of this kind structure is applicable to FTTH(, and Fiber to the home) vertical in the building, horizontal wiring or pipeline wiring, excellent bending property is arranged and good resistance to tension is arranged, extremely be easy to constructing operation.
Background technology
At present, common butterfly optical cable technology is relatively ripe, put in the practical application, its structure mainly adopts: colored optical fiber adds parallel reinforcement flat structure, tightly packaged fiber and adds parallel reinforcement flat structure, fibre ribbon and add parallel reinforcement flat structure, optical fiber (or hard-pressed bale is fine, optical fiber) band and add parallel adding and force suspention line flat structure.Flat notching construction separation optical fiber and anti-pressure ability are comparatively outstanding, but relatively poor in the bending property of some direction, have certain defective in house wiring and pipeline use, can not give play to the performance of its used G657 optical fiber fully.
Summary of the invention
The present invention seeks to provides a kind of circular rubber-covered-wire optical cable and preparation method thereof for above-mentioned weak point, is a kind of vertical, horizontal wiring or pipeline wiring circular rubber-covered-wire optical cable of being fit to, for house wiring provides convenient greatly.This cable outward appearance of this cable is circular, adopt metal or non-metal reinforcement member to do parallel reinforcement, be optical fiber or the tightly packaged fiber (optical fiber adopts G657A2 optical fiber) that quantity does not wait in the middle of the parallel reinforcement, optical fiber and reinforcement outside are coated with the fluting circular jacket, and method for making is simple, the circular rubber-covered-wire optical cable of making, the cable footpath is little, lightweight, excellent bendability and tension lateral pressure resistant performance are applicable to that vertical wirings and horizontal wiring, building interior conduit connect up in FTTH the building in.
Circular rubber-covered-wire optical cable and preparation method thereof takes following scheme to realize:
The circular rubber-covered-wire optical cable structure comprises fiber unit, reinforcement and fluting sheath, and described fiber unit is arranged on the circular rubber-covered-wire optical cable middle part, and the fiber unit both sides are arranged with reinforcement in parallel, strengthen, and fiber unit and reinforcement outside are coated with the fluting sheath.
Described fluting sheath adopts the materials such as Polyvinylchloride or low smoke halogen-free flame-retardant polyolefin.Described fiber unit adopts colored optical fiber unit or tightly packaged fiber unit, and described reinforcement adopts metal reinforcement or non-metal reinforcement member (core).
Optical fiber in the described fiber unit adopts G.657A2 optical fiber (bend insensitive fiber), this optical fiber has fabulous bending resistance and low water peak, fine macrobending loss≤0.2dB@1550nm under the 7.5mm bending radius, ≤ 0.5dB@1625nm, performance satisfies indoorly lays requirement along the corner, fibre-optic mode field diameter is consistent with common G.652 optical fiber, with G.652 optical fiber is fully compatible, satisfies the redirect request from different G.652 optical fiber.
Described metal reinforcement adopts 0.4mm phosphatization steel wire, intensity of steel wire 〉=1900Mpa, and drum is neat, without stepping on line and joint phenomenon.Described nonmetal reinforcement adopts 0.5mm to peel off reinforced plastic FRP, intensity 〉=400Mpa, and drum is neat, without stepping on line and joint phenomenon.
Described sheath adopts thermoplastic low-smoke halide-free fireproof composite polyolefine CABLE MATERIALS (LSZH material), has good mechanical and physical performance, heat resistance, electrical property, fire resistance and process industrial art performance, have not halogen-containing, the amount of being fuming is low.Can be by 100 ℃ of thermal deformations and Apparatus for Pressure at high-temp.Pulling strengrth 〉=10Mpa, breaking elongation 〉=125%, the index of itching 〉=30%.
Described fiber unit adopts the colored optical fiber unit, adopts single core or multicore colored optical fiber in the described colored optical fiber unit.
The circular rubber-covered-wire optical cable method for making:
1, fiber unit or tightly packaged fiber unit are installed on the fiber placing shaft, adjust the fine tension force of putting of fiber unit, putting fine tension force is 30 ~ 90g.Described fiber unit or tightly packaged fiber unit adopt at least 1.Described fiber unit adopts the G657A2 colored optical fiber, is generally blue, and twin-core is blue, orange dichromatism, and four-core is blue, orange, green, brown.
2, two parallel reinforcements of diameter are installed on the pay off rack, adjust the reinforcement laying tension, laying tension is 5-10N.Described reinforcement adopts metal reinforcement or non-metal reinforcement member, and metal reinforcement is selected 0.4mm phosphatization steel wire, and non-metal reinforcement member is selected 0.5mmFRP.
3, adjust the butterfly optical cable extruded mould, require not core shift of mould, core rod is foremost behind the die sleeve mouth about 3-4mm.
4, fiber unit or tightly packaged fiber unit and parallel reinforcement are drawn by correct direction through tension controller, and be incorporated in the mould.
5, at fiber unit or tightly packaged fiber unit and parallel reinforcement outer cladding last layer sheath, through hot water storgae, the cooling of cold rinse bank secondary, the hot water storgae temperature is at 30 ~ 50 ℃ by the extrusion molding mould for adjusting sheath material temperature, extrusion molding speed, and the cold rinse bank temperature is at 15 ~ 25 ℃.Require single twin-core cable external diameter 3.0mm, three to four-core cable external diameter 3.5mm, open stripping groove depth 0.5mm, sheath is opened stripping power 3-10N, and fiber unit can be extracted out about 200mm from sheath.Reinforcement should be embedded in the sheath, must not expose, and also must not expose along opening the steel wire pushed aside in the sheath of rear both sides of stripping groove.Jacket surface should be smooth, color is even, does not have slight crack, bubble and spot.
6, sheath can adopt the materials such as low smoke halogen-free flame-retardant polyolefin, Polyvinylchloride.The above-mentioned butterfly optical cable unit of finishing is carried out optical fiber attenuation, peeling force and length detection, namely make circular rubber-covered-wire optical cable after qualified, around to take-up reel.
The decay of finished product cable requires: 0.35dB/km@1310nm, 0.25dB/km@1550nm.The fluting sheath is 3-10N along the groove separating force.Length is 500 meters multiple.
Described hard-pressed bale fibre core unit method for making:
1,1-2 root G657A2 colored optical fiber is installed on the fiber placing shaft, adjust the fine tension force of putting of optical fiber, put fine tension force 30 ~ 90g.
2. more above-mentioned bare fibre is imported in the hard-pressed bale mould, optical fiber is pressed correct direction on take-up reel.
3. adjusting high-molecular optical curing materials pressure, temperature, adjusting pressure are 2.0 ~ 5.0bar, and temperature is 30 ~ 60 ℃, opens high-molecular optical curing materials valve, regulates simultaneously the protective gas consumption, and protective gas can adopt nitrogen and other inert gases.
4. above-mentioned high-molecular optical curing materials is injected optical fiber hard-pressed bale mould is housed, import simultaneously protective gas, the high-molecular optical curing materials can adopt acroleic acid resin, silicon rubber etc.
5. the above-mentioned optical fiber that is coated with the high-molecular optical curing materials is carried out ultraviolet light polymerization.
6. with curing optical fiber, the extrusion molding mould by extruding machine is at curing optical fiber unit outer cladding last layer sheath, and through hot water storgae, the cooling of cold rinse bank secondary, the hot water storgae temperature is at 30 ~ 50 ℃, and the cold rinse bank temperature is namely made tightly packaged fiber unit at 15 ~ 25 ℃.Sheath can adopt the macromolecular materials such as Polyvinylchloride, tygon, is of a size of 0.9mm.
7. the above-mentioned tightly packaged fiber unit of finishing is carried out optical fiber attenuation, peeling force and length detection, tightly packaged fiber is filled to pay off rack after qualified, laying tension is adjusted to 1.5N.
The tightly packaged fiber decay requires: 0.35dB/km@1310nm, and 0.25dB/km@1550nm, the peeling force requirement is: it is fine to get the 50cm hard-pressed bale, peels off 2cm with wire-stripping pliers, and all the other sheaths are unshift.
Circular rubber-covered-wire optical cable is reasonable in design, and house wiring is extremely convenient, and fabrication processing is simple and reliable.The advantage of the circular rubber-covered-wire optical cable of making through the present invention:
1. adopt nonmetal central reinforce member, circular LSZH protective cover material can give full play to the advantage of G657A2 optical fiber, so optical cable has fabulous bending property, bending radius can reach 7.5mm.
2. optical cable environmental protection flame retardant.
3. make cable directly tend to small-sized, the weight trend is light-duty.
4. the fluting design had both made optical cable possess very strong anti-pressure ability (short-term 1000N, long-term 500N), made things convenient for again peeling off of sheath.
5. construction continues conveniently, can use the multiple construction methods such as quick connection, cold joint, thermal welding.
6. derivative version is more, can add the suspention line and make self-support cable.
Description of drawings
The invention will be further described below with reference to dimensional drawing:
Fig. 1 is the painted fine type circular rubber-covered-wire optical cable structural representation Fig. 1 of the present invention.
Fig. 2 is the fine type circular rubber-covered-wire optical cable of hard-pressed bale of the present invention structural representation Fig. 2.
Fig. 3 is twin-core circular rubber-covered-wire optical cable structural representation Fig. 3 of the present invention.
Embodiment
With reference to accompanying drawing 1～3, the circular rubber-covered-wire optical cable structure comprises fiber unit 1, reinforcement 2 and fluting sheath 3, and described fiber unit 1 is arranged on the circular rubber-covered-wire optical cable middle part, and fiber unit 1 both sides are arranged with reinforcement 2 in parallel, strengthen, fiber unit 1 and reinforcement 2 outsides are coated with fluting sheath 3.
Described fluting sheath 3 adopts the materials such as Polyvinylchloride or low smoke halogen-free flame-retardant polyolefin.Described fiber unit 1 adopts colored optical fiber unit or tightly packaged fiber unit, and described reinforcement adopts metal reinforcement or non-metal reinforcement member (core).
Described fiber unit or tightly packaged fiber unit adopt at least 1.Described fiber unit adopts the G657A2 colored optical fiber, is generally blue, and twin-core is blue, orange dichromatism, and four-core is blue, orange, green, brown.
Optical fiber in the described fiber unit 1 adopts G.657A2 optical fiber (bend insensitive fiber), this optical fiber has fabulous bending resistance and low water peak, fine macrobending loss≤0.2dB@1550nm under the 7.5mm bending radius, ≤ 0.5dB@1625nm, performance satisfies indoorly lays requirement along the corner, fibre-optic mode field diameter is consistent with common G.652 optical fiber, with G.652 optical fiber is fully compatible, satisfies the redirect request from different G.652 optical fiber.
Described metal reinforcement adopts 0.4mm phosphatization steel wire, intensity of steel wire 〉=1900Mpa, and drum is neat, without stepping on line and joint phenomenon.Described nonmetal reinforcement adopts 0.5mm to peel off reinforced plastic FRP, intensity 〉=400Mpa, and drum is neat, without stepping on line and joint phenomenon
Described sheath adopts thermoplastic low-smoke halide-free fireproof composite polyolefine CABLE MATERIALS (LSZH material), has good mechanical and physical performance, heat resistance, electrical property, fire resistance and process industrial art performance, have not halogen-containing, the amount of being fuming is low.Can be by 100 ℃ of thermal deformations and Apparatus for Pressure at high-temp.Pulling strengrth 〉=10Mpa, breaking elongation 〉=125%, the index of itching 〉=30%
Described fiber unit adopts the colored optical fiber unit, adopts single core or multicore colored optical fiber in the described colored optical fiber unit.
With reference to accompanying drawing 1 circular single core colored optical fiber butterfly cable unit figure, its structure comprises single core colored optical fiber 1, parallel enhancement Layer (metal adopts steel wire, nonmetal employing FRP) 2, sheath (low smoke halogen-free flame-retardant polyolefin or Polyvinylchloride) 3.
Accompanying drawing 2 is the circular single core colored optical fiber butterfly cable unit figure of the fine type of hard-pressed bale, its structure comprises single core cured resin optical fiber 1, optical fiber hard-pressed bale layer (low smoke halogen-free flame-retardant polyolefin or Polyvinylchloride) 4, parallel enhancement Layer (metal adopts steel wire, nonmetal employing FRP) 2, sheath (low smoke halogen-free flame-retardant polyolefin or Polyvinylchloride) 3.
Accompanying drawing 3 is twin-core circular rubber-covered-wire optical cable structural representations, and its optical fiber structure adopts with reinforcement and is arranged in parallel.
Single core or multicore colored optical fiber type circular rubber-covered-wire optical cable method for making:
1. one or more G657A2 colored optical fiber unit (be generally blue, twin-core is blue, orange dichromatism, and four-core is blue, orange, green, palm fibre) optical fiber is installed on the fiber placing shaft, adjust the fine tension force of putting of optical fiber, put fine tension force 30 ~ 90g.
2. two parallel reinforcements of diameter (the metal reinforced 0.4mm phosphatization steel wire of selecting, the nonmetal reinforced 0.5mmFRP of selecting) are installed on the pay off rack, adjust the reinforcement laying tension, laying tension 5-10N.
3. adjust the butterfly optical cable extruded mould, require not core shift of mould, die pressure is moderate, and core rod is foremost behind the die sleeve mouth about 3-4mm.
4. colored optical fiber unit and parallel reinforcement are drawn by correct direction through tension controller, and be incorporated in the mould.
5. adjusting sheath material temperature, extrusion molding speed are passed through the extrusion molding mould in the colored optical fiber unit and parallel reinforcement outer cladding last layer sheath, and through hot water storgae, the cooling of cold rinse bank secondary, the hot water storgae temperature is at 30 ~ 50 ℃, and the cold rinse bank temperature is at 15 ~ 25 ℃.Require single twin-core cable external diameter 3.0mm, three to four-core cable external diameter 3.5mm, open stripping groove depth 0.5mm, sheath is opened stripping power 3-10N, and optical fiber can be extracted out about 200mm from sheath.Strong component should be embedded in the sheath, must not expose, and also must not expose along opening the steel wire pushed aside in the sheath of rear both sides of stripping groove.Jacket surface should be smooth, color is even, does not have slight crack, bubble and spot.
6. sheath can adopt the materials such as low smoke halogen-free flame-retardant polyolefin, Polyvinylchloride.The above-mentioned butterfly optical cable unit of finishing is carried out optical fiber attenuation, peeling force and length detection, namely make circular rubber-covered-wire optical cable after qualified, around to take-up reel.
Single core or twin-core hard-pressed bale fibre core circular rubber-covered-wire optical cable method for making:
1. a G657A2 bare fibre is installed on the fiber placing shaft, adjust the fine tension force of putting of optical fiber, put fine tension force 30 ~ 90g.
2. more above-mentioned bare fibre is imported in the hard-pressed bale mould, optical fiber is pressed correct direction on take-up reel.
3. adjusting high-molecular optical curing materials pressure, temperature, adjusting pressure are 2.0 ~ 5.0bar, and temperature is 30 ~ 60 ℃, opens high-molecular optical curing materials valve, regulates simultaneously the protective gas consumption, and protective gas can adopt nitrogen and other inert gases.
4. above-mentioned high-molecular optical curing materials is injected optical fiber hard-pressed bale mould is housed, import simultaneously protective gas, macromolecular material can adopt acroleic acid resin, silicon rubber etc.
5. the above-mentioned optical fiber that is coated with photo-curing material is carried out ultraviolet light polymerization.
6. with curing optical fiber, the extrusion molding mould by extruding machine is at curing optical fiber outer cladding last layer sheath, and through hot water storgae, the cooling of cold rinse bank secondary, the hot water storgae temperature is at 30 ~ 50 ℃, and the cold rinse bank temperature is at 15 ~ 25 ℃.Namely make tightly packaged fiber unit.Sheath can adopt the macromolecular materials such as Polyvinylchloride, tygon, is of a size of 0.9mm.
7, the above-mentioned tightly packaged fiber unit of finishing is carried out optical fiber attenuation, peeling force and length detection, tightly packaged fiber is filled to pay off rack after qualified, laying tension is adjusted to 1.5N.
8, two parallel reinforcements of diameter (the metal reinforced 0.4mm phosphatization steel wire of selecting, the nonmetal reinforced 0.5mmFRP of selecting) are installed on the pay off rack, adjust the reinforcement laying tension, laying tension 5-10N.
9, adjust the butterfly optical cable extruded mould, require not core shift of mould, die pressure is moderate, and core rod is foremost behind the die sleeve mouth about 3-4mm.
10, tightly packaged fiber unit and parallel reinforcement are drawn by correct direction through tension controller, and be incorporated in the mould.
11, at tightly packaged fiber unit and parallel reinforcement outer cladding last layer sheath, through hot water storgae, the cooling of cold rinse bank secondary, the hot water storgae temperature is at 30 ~ 50 ℃ by the extrusion molding mould for adjusting sheath material temperature, extrusion molding speed, and the cold rinse bank temperature is at 15 ~ 25 ℃.Require single core cable external diameter 3.0mm, twin-core cable external diameter 4.0mm opens stripping groove depth 0.5mm, and sheath is opened stripping power 3-10N, and optical fiber can be extracted out about 100mm from sheath.Reinforcement should be embedded in the sheath, must not expose, and also must not expose along opening the steel wire pushed aside in the sheath of rear both sides of stripping groove.Jacket surface should be smooth, color is even, does not have slight crack, bubble and spot.
12, sheath can adopt the materials such as low smoke halogen-free flame-retardant polyolefin, Polyvinylchloride.The above-mentioned butterfly optical cable unit of finishing is carried out optical fiber attenuation, peeling force and length detection, namely make circular rubber-covered-wire optical cable after qualified, around to take-up reel.
Claims (7)
1. circular rubber-covered-wire optical cable method for making is characterized in that:
(1) fiber unit is installed on the fiber placing shaft, adjust the fine tension force of putting of fiber unit, putting fine tension force is 30 ~ 90g;
(2) two parallel reinforcements are installed on the pay off rack, adjust the reinforcement laying tension, laying tension is 5-10N;
(3) adjust the butterfly optical cable extruded mould, require not core shift of mould, core rod is foremost behind the die sleeve mouth about 3-4mm;
(4) fiber unit and parallel reinforcement are drawn by correct direction through tension controller, and be incorporated in the mould;
(5) regulate sheath material temperature, extrusion molding speed
,By
Extruded mouldAt fiber unit and parallel reinforcement outer cladding last layer sheath, through hot water storgae, the cooling of cold rinse bank secondary, the hot water storgae temperature is at 30 ~ 50 ℃, the cold rinse bank temperature is at 15 ~ 25 ℃, require single twin-core cable external diameter 3.0mm, three to four-core cable external diameter 3.5mm, open stripping groove depth 0.5mm, sheath is opened stripping power 3-10N, and fiber unit can be extracted out from sheath about 200mm, and reinforcement should be embedded in the sheath, must not expose, also must not expose along opening the reinforcement pushed aside in the sheath of rear both sides of stripping groove, jacket surface should be smooth, color is even, does not have slight crack, bubble and spot;
(6) the above-mentioned butterfly optical cable unit of finishing is carried out optical fiber attenuation, peeling force and length detection, namely make circular rubber-covered-wire optical cable after qualified, around to take-up reel.
2. circular rubber-covered-wire optical cable method for making according to claim 1 is characterized in that: described fiber unit employing tightly packaged fiber unit.
3. circular rubber-covered-wire optical cable method for making according to claim 2 is characterized in that described tightly packaged fiber unit method for making:
(1) 1-2 root G657A2 colored optical fiber is installed on the fiber placing shaft, adjust the fine tension force of putting of optical fiber, put fine tension force 30 ~ 90g;
(2) more above-mentioned colored optical fiber is imported in the hard-pressed bale mould, optical fiber is pressed correct direction on take-up reel;
(3) adjusting high-molecular optical curing materials pressure, temperature, adjusting pressure are 2.0 ~ 5.0bar, and temperature is 30 ~ 60 ℃, opens high-molecular optical curing materials valve, regulates simultaneously the protective gas consumption,
Protective gas adopts nitrogen and other inert gases
(4) optical fiber hard-pressed bale mould is equipped with in above-mentioned high-molecular optical curing materials injection, imports simultaneously protective gas,
The high-molecular optical curing materials adopts acroleic acid resin, silicon rubber
(5) the above-mentioned optical fiber that is coated with the high-molecular optical curing materials is carried out ultraviolet light polymerization;
(6) with curing optical fiber, extrusion molding mould by extruding machine is at curing optical fiber unit outer cladding last layer sheath, through hot water storgae, the cooling of cold rinse bank secondary, the hot water storgae temperature is at 30 ~ 50 ℃, the cold rinse bank temperature is at 15 ~ 25 ℃, namely make tightly packaged fiber unit, sheath adopts Polyvinylchloride or vinyl polymer material;
(7) the above-mentioned tightly packaged fiber unit of finishing is carried out optical fiber attenuation, peeling force and length detection, tightly packaged fiber is filled to pay off rack after qualified, laying tension is adjusted to 1.5N.
4. circular rubber-covered-wire optical cable method for making according to claim 1 is characterized in that described fiber unit adopts at least 1.
5. circular rubber-covered-wire optical cable method for making according to claim 1 is characterized in that described fiber unit adopts the G657A2 colored optical fiber, is generally blue, and twin-core is blue, orange dichromatism, and four-core is blue, orange, green, brown.
6. circular rubber-covered-wire optical cable method for making according to claim 1 is characterized in that described reinforcement adopts metal reinforcement or non-metal reinforcement member, and metal reinforcement is selected 0.4mm phosphatization steel wire, and non-metal reinforcement member is selected 0.5mmFRP.
7. circular rubber-covered-wire optical cable method for making according to claim 1 is characterized in that sheath adopts low smoke halogen-free flame-retardant polyolefin or pvc material.
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| CN104049302A (en) * | 2013-03-14 | 2014-09-17 | 江苏藤仓亨通光电有限公司 | Fiber unit connection method of seabed optical cable or photoelectric composite cable |
| CN104062708A (en) * | 2013-03-21 | 2014-09-24 | 江苏藤仓亨通光电有限公司 | Connection method for fiber units of optical fiber composite power cables |
| CN103383486A (en) * | 2013-08-07 | 2013-11-06 | 江苏中天科技股份有限公司 | Armored pipeline butterfly optical cable and production method thereof |
| CN105717592A (en) * | 2014-12-05 | 2016-06-29 | 泰科电子(上海)有限公司 | Method for manufacturing optical cable |
| CN104597561A (en) * | 2015-02-17 | 2015-05-06 | 通鼎互联信息股份有限公司 | Small size optical fiber and manufacturing method thereof |
| CN106842455A (en) * | 2017-03-23 | 2017-06-13 | 烽火通信科技股份有限公司 | A kind of MPO optical cables comprising optical cable subelement and preparation method thereof |
| CN108627928A (en) * | 2018-05-13 | 2018-10-09 | 山东华新通信科技有限公司 | The production technology of the double outdoor version butterfly optical cable of twin-core |
| CN111413771A (en) * | 2020-04-29 | 2020-07-14 | 成都亨通光通信有限公司 | Flexible armored butterfly-shaped optical cable and manufacturing method thereof |
| CN111650704A (en) * | 2020-04-29 | 2020-09-11 | 成都亨通光通信有限公司 | Indoor and outdoor four-core butterfly-shaped optical cable and process flow thereof |
| CN113406757A (en) * | 2021-06-16 | 2021-09-17 | 江苏中天科技股份有限公司 | Butterfly-shaped optical cable and preparation method thereof |
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| CN201637903U (en) * | 2010-03-31 | 2010-11-17 | 中纤伟业科技发展（北京）有限公司 | FTTH (Fiber To The Home) soft cable |
| CN101819305A (en) * | 2010-04-28 | 2010-09-01 | 吴江市胜信光电科技有限公司 | Optical cable leading in house from outdoors |
| CN201837747U (en) * | 2010-09-14 | 2011-05-18 | 南京华脉科技有限公司 | Ultra-soft bending-resistant high-strength FTTH (fiber to the home) butterfly-shaped optical cable |
| CN202033501U (en) * | 2011-04-27 | 2011-11-09 | 宏安集团有限公司 | Optical fiber cable |
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Effective date of registration: 20160303 Address after: The road town of Rudong County in Jiangsu province 226463 in Nantong City, No. 1 Patentee after: Zhongtian Science and Technology Co., Ltd., Jiangsu Patentee after: Zhongtian Technologies Fiber Optics Co., Ltd. Patentee after: Zhongtian Technologies Submarine Optic Fiber Cable Co., Ltd. Address before: The road town of Rudong County in Jiangsu province 226463 in Nantong City, No. 1 Patentee before: Zhongtian Science and Technology Co., Ltd., Jiangsu |
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Effective date of registration: 20200903 Address after: The road town of Rudong County in Jiangsu province 226463 in Nantong City, No. 1 Co-patentee after: ZHONGTIAN TECHNOLOGY FIBRE OPTICS Co.,Ltd. Patentee after: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. Address before: The road town of Rudong County in Jiangsu province 226463 in Nantong City, No. 1 Co-patentee before: ZHONGTIAN TECHNOLOGY FIBRE OPTICS Co.,Ltd. Patentee before: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. Co-patentee before: ZHONGTAN TECHNOLOGY SUBMARINE CABLE Co.,Ltd. |
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