公开(公告)号：US07713451B2

公开(公告)日：2010-05-11

申请号：US10577350

申请日：2003-10-29

申请人： Massimiliano Pavan ,  Stefano Testi ,  Raffaella Donetti ,  Cristiano Puppi ,  Mauro Maritano

发明人： Massimiliano Pavan ,  Stefano Testi ,  Raffaella Donetti ,  Cristiano Puppi ,  Mauro Maritano

IPC分类号： B29C47/10 ,  B29D11/00

CPC分类号： C08J3/18 ,  B29C47/0011 ,  B29C47/0019 ,  B29C47/0026 ,  B29C47/1063 ,  B29C47/1081 ,  B29D11/00673 ,  B29K2105/0005 ,  C08J2329/04 ,  C08K5/005 ,  C08K5/053 ,  C08L29/04

摘要： A process for manufacturing a water-resistant telecommunication cable. The cable has a solid and compact element having a water-soluble polymer material having vinyl alcohol/vinyl acetate copolymer having a hydrolysis degree of 60-95% and a polymerisation degree higher than 1,800 and at least one solid low-melting and one solid high melting plasticizers. The process produces continuously the water-soluble polymer material by separately feeding, in sequence, a multi-screw extruder, in the flow direction, with the copolymer and the high melting plasticizer melting and mixing them while transporting them through the extruder, and with the low melting plasticizer, melting and mixing them with the copolymer and the high melting plasticizer, subsequently homogenizing the copolymer and the plasticizers and finally discharging the melt, at a temperature lower than or equal to 205° C. A process for extruding the above PVA based water-soluble polymer material. The process allows extrusion of PVA with an enhanced productivity and reproducibility requiring shorter times for absorbing the plasticizers onto the polymer.

摘要翻译： 一种制造防水通信电缆的方法。 电缆具有固体紧凑的元件，其具有水溶性聚合物材料，其具有水解度为60-95％，聚合度高于1,800和至少一个固体低熔点和一个固体高的乙烯醇/乙酸乙烯酯共聚物 熔化增塑剂。 该方法连续地通过在流动方向上单独进料多股螺杆挤出机，共聚物和高熔点增塑剂在将它们输送通过挤出机进行熔融和混合的同时单独进料而产生， 将低熔点增塑剂熔化并与共聚物和高熔点增塑剂混合，然后在低于或等于205℃的温度下使共聚物和增塑剂均化并最终排出熔体。一种挤出上述PVA基的方法 水溶性高分子材料。 该方法允许PVA的挤出以提高的生产率和再现性需要更短的时间来吸收聚合物上的增塑剂。

公开(公告)号：US20090325111A1

公开(公告)日：2009-12-31

申请号：US12503578

申请日：2009-07-15

申请人： Giacomo Stefano Roba ,  Franco Veronelli ,  Massimo Nutini

发明人： Giacomo Stefano Roba ,  Franco Veronelli ,  Massimo Nutini

IPC分类号： F23D14/32

CPC分类号： F23L7/00 ,  C03B19/1423 ,  C03B37/0142 ,  C03B2207/06 ,  C03B2207/20 ,  C03B2207/42 ,  C03B2207/87 ,  F23D14/24 ,  F23D14/32 ,  F23L2900/07002

摘要： A method is disclosed for feeding a flow of gas to a burner for manufacturing an optical fibre preform, said burner comprising: a plurality of coaxial tubes, each two adjacent coaxial tubes defining an annular channel between themselves; an annular gas distribution chamber at one extremity of said annular channels and in fluid communication therewith, said annular distribution chamber being delimited in the radial direction by an inner and an outer surface; said method comprising introducing the flow of gas into the distribution chamber so that the direction of its radially outermost portion is tangential to the radially outer surface of the distribution chamber. The method allows obtaining a better gas velocity distribution in said annular channels. A burner for performing said method is also disclosed.

摘要翻译： 公开了一种用于将气流供应到用于制造光纤预制件的燃烧器的方法，所述燃烧器包括：多个同轴管，每个两个相邻的同轴管在它们之间限定环形通道; 环形气体分配室，位于所述环形通道的一个末端并与其流体连通，所述环形分配室通过内表面和外表面沿径向界定; 所述方法包括将气流引入分配室，使得其径向最外部分的方向与分配室的径向外表面相切。 该方法允许在所述环形通道中获得更好的气体速度分布。 还公开了一种用于执行所述方法的燃烧器。

公开(公告)号：US07587914B2

公开(公告)日：2009-09-15

申请号：US10478835

申请日：2002-05-27

申请人： Giacomo Stefano Roba ,  Franco Veronelli ,  Massimo Nutini

发明人： Giacomo Stefano Roba ,  Franco Veronelli ,  Massimo Nutini

IPC分类号： C03B37/018

CPC分类号： F23L7/00 ,  C03B19/1423 ,  C03B37/0142 ,  C03B2207/06 ,  C03B2207/20 ,  C03B2207/42 ,  C03B2207/87 ,  F23D14/24 ,  F23D14/32 ,  F23L2900/07002

摘要： A method for feeding a flow of gas to a burner for manufacturing an optical fiber preform. The burner has a plurality of coaxial tubes, each two adjacent coaxial tubes defining an annular channel between themselves; an annular gas distribution chamber at one extremity of the annular channels and in fluid communication therewith, the annular distribution chamber being delimited in the radial direction by an inner and an outer surface. The flow of gas is introduced into the distribution chamber so that the direction of its radially outermost portion is tangential to the radially outer surface of the distribution chamber. The method allows obtaining a better gas velocity distribution in the annular channels.

摘要翻译： 一种用于将气体流供给到用于制造光纤预制件的燃烧器的方法。 燃烧器具有多个同轴管，每个两个相邻的同轴管在它们之间限定环形通道; 环形气体分配室，位于环形通道的一个末端并与其流体连通，环形分配​​室通过内表面和外表面在径向上限定。 气体流被引入分配室，使得其径向最外部分的方向与分配室的径向外表面相切。 该方法允许在环形通道中获得更好的气体速度分布。

公开(公告)号：US07514633B2

公开(公告)日：2009-04-07

申请号：US10581186

申请日：2003-12-03

申请人： Gaia Dell'Anna ,  Cristiana Scelza ,  Sergio Belli ,  Alberto Bareggi

发明人： Gaia Dell'Anna ,  Cristiana Scelza ,  Sergio Belli ,  Alberto Bareggi

IPC分类号： H01B7/02

CPC分类号： H01B3/20 ,  H01B7/185 ,  H01B7/1875 ,  H01B7/189

摘要： A cable for use in a predetermined voltage class includes at least one conductor; at least one extruded insulating layer surrounding the conductor, the insulating layer being made from a non-crosslinked insulating material having at least one thermoplastic polymer and at least one dielectric liquid, the insulating layer having a thickness such as to provide a voltage gradient on the outer surface of the cable insulating layer not smaller than 1.0 kV/mm; and a protective element around the extruded insulating layer having a thickness and mechanical properties selected to provide a predetermined impact resistance capability, the protective element having at least one expanded polymeric layer, the thickness being sufficient to prevent detectable insulating layer damage upon impact of at least 25 J energy. The insulating layer thickness and the protective element thickness can be selected in combination to minimize the overall cable weight while preventing detectable insulating layer damage upon impact of at least 25 J energy.

摘要翻译： 用于预定电压等级的电缆包括至少一个导体; 围绕所述导体的至少一个挤压绝缘层，所述绝缘层由具有至少一种热塑性聚合物和至少一种介电液体的非交联绝缘材料制成，所述绝缘层具有厚度以在所述绝缘层上提供电压梯度 电缆绝缘层的外表面不小于1.0kV / mm; 以及围绕所述挤压绝缘层的保护元件，其具有被选择为提供预定抗冲击能力的厚度和机械性能，所述保护元件具有至少一个发泡聚合物层，该厚度足以防止至少在冲击时可检测的绝缘层损伤 25 J能量。 可以组合选择绝缘层厚度和保护元件厚度，以使总体电缆重量最小化，同时防止在至少25J能量冲击时可检测的绝缘层损伤。

公开(公告)号：US07466887B2

公开(公告)日：2008-12-16

申请号：US10478828

申请日：2002-05-21

申请人： Luca Castellani ,  Mauro Maritano ,  Giovanni Brandi

发明人： Luca Castellani ,  Mauro Maritano ,  Giovanni Brandi

IPC分类号： G02B6/44

CPC分类号： G02B6/443 ,  C08F210/06 ,  C08K5/0083 ,  C08L23/10 ,  C08L23/14 ,  C08L23/16 ,  C08L2203/12 ,  C08L2203/202 ,  C08L2207/02 ,  G02B6/4427 ,  G02B6/4429 ,  C08L2666/04 ,  C08F210/08 ,  C08F210/14 ,  C08F210/16 ,  C08L2666/06

摘要： An optical fiber cable having a polymeric component, in particular a buffer tube, suitable for both terrestrial and undersea uses. The polymeric material forming the component has a copolymer of propylene with a C4-C8 α-olefin and preferably a nucleating agent disbursed therein. The obtained component shows improved dimensional stability, which guarantees its non-deformability, and high transparency and can be extruded at lower extrusion temperatures.

摘要翻译： 一种具有聚合物组分，特别是缓冲管的光纤电缆，适用于陆地和海底用途。 形成组分的聚合物材料具有丙烯与C 4 -C 8α-烯烃的共聚物，优选其中分发的成核剂。 所获得的组分显示出改进的尺寸稳定性，其保证其不变形性，并且高透明度并且可在较低的挤出温度下挤出。

公开(公告)号：US07409126B2

公开(公告)日：2008-08-05

申请号：US10528836

申请日：2003-09-22

申请人： Giacomo Stefano Roba ,  Davide Sarchi ,  Martino Travagnin ,  Alexis Debut

发明人： Giacomo Stefano Roba ,  Davide Sarchi ,  Martino Travagnin ,  Alexis Debut

IPC分类号： G02B6/44

CPC分类号： B65H49/02 ,  C03B37/02745 ,  C03B37/032 ,  C03B37/12 ,  C03B2203/19 ,  C03B2203/20 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/02285

摘要： An apparatus for producing a low-PMD optical fiber having a furnace for melting a lower portion of an optical preform; a traction device for pulling an optical fiber from the lower portion of an optical preform; a spinning device for imparting a substantially constant and unidirectional spin to the optical fiber as it is pulled, which causes the fiber to undergo an elastic torsion; a winding device for winding the optical fiber onto a reel; and a twisting device for imparting to the spun optical fiber a unidirectional twist in a direction opposite the elastic torsion, so as to control the residual twist in the optical fiber. A process for producing the fiber, an optical fiber and a cable are also provided.

摘要翻译： 一种用于生产具有用于熔化光学预型件的下部的炉的低PMD光纤的设备; 用于从光学预型件的下部拉动光纤的牵引装置; 旋转装置，用于在被拉动时使光纤基本上恒定且单向旋转，这导致纤维经受弹性扭转; 用于将光纤缠绕到卷轴上的卷绕装置; 以及用于使纺丝光纤沿与弹性扭转相反的方向赋予单向捻度的扭转装置，以便控制光纤中的残余扭曲。 还提供了用于生产纤维，光纤和电缆的方法。

公开(公告)号：US07373057B2

公开(公告)日：2008-05-13

申请号：US10573894

申请日：2003-09-30

申请人： Massimo Pizzorno ,  Alessandro Ginocchio ,  Enrico Consonni

发明人： Massimo Pizzorno ,  Alessandro Ginocchio ,  Enrico Consonni

IPC分类号： G02B6/44

CPC分类号： G02B6/441 ,  G02B6/443 ,  G02B6/4434

摘要： An optical fiber cable has a highly reduced diameter. The cable has a central strength member; a number of tubes containing loosely arranged optical fibers, each tube having a thickness, and each optical fiber having a coating; and a protective outer jacket, wherein the filling coefficient of optical fibers in at least one loose tube is ≧45°/0. The tubes are made of a material having an elasticity modulus ≧700 MPa; and the optical fibers are SM-R fibers having a microbending sensitivity ≦4.0 dB·km−1/g·mm−1 at a temperature of about −30° C. to +60° C. at about 1550 nm.

摘要翻译： 光纤电缆的直径大大降低。 电缆具有中心强度构件; 包含松散布置的光纤的多个管，每个管具有厚度，并且每个光纤具有涂层; 和保护外护套，其中至少一个松套管中的光纤的填充系数> 45°/ 0。 管由具有弹性模量> = 700MPa的材料制成; 并且光纤是在约-30℃的温度下具有微弯曲灵敏度<= 4.0 DB.KM / g.mm -1的SM-R纤维 在约1550nm至+ 60℃。

公开(公告)号：US07317858B2

公开(公告)日：2008-01-08

申请号：US10512241

申请日：2002-04-24

申请人： Giacomo Stefano Roba ,  Lidia Terruzzi ,  Sabrina Fogliani ,  Marco Armondi ,  Sandra Joanna Nagelvoort ,  Johannes Adrianus Van Eekelen ,  Adrianus Gijsbertus Maria Abel ,  Gouke Dirk Jan Geus ,  Duurt Pieter Willem Alkema

发明人： Giacomo Stefano Roba ,  Lidia Terruzzi ,  Sabrina Fogliani ,  Marco Armondi ,  Sandra Joanna Nagelvoort ,  Johannes Adrianus Van Eekelen ,  Adrianus Gijsbertus Maria Abel ,  Gouke Dirk Jan Geus ,  Duurt Pieter Willem Alkema

IPC分类号： G02B6/02

CPC分类号： G02B6/02033 ,  C03C25/106 ,  G02B1/048 ,  G02B6/02395 ,  C08L75/04

摘要： An optical fiber having an internal glass portion, a first coating layer surrounding the glass portion and a second coating layer surrounding the first coating layer. The first coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition having a radiation curable oligomer having a backbone derived from polypropylene glycol and a dimer acid based polyester polyol. The cured polymeric material has: (a) a hardening temperature (Th) from −10° C. to about −20° C. and a modulus measured at the Th lower than 5.0 MPa; or (b) a hardening temperature (Th) from −20° C. to about −30° C. and a modulus measured at the Th lower than 20.0 MPa; or (c) a hardening temperature (Th) lower than about −30° C. and a modulus measured at the Th lower than 70.0 MPa.

摘要翻译： 具有内玻璃部分的光纤，围绕玻璃部分的第一涂层和围绕第一涂层的第二涂层。 第一涂层由固化的聚合物材料形成，该聚合材料通过固化具有衍生自聚丙二醇的主链和二聚酸基聚酯多元醇的可辐射固化低聚物的可辐射固化组合物而获得。 固化的聚合物材料具有：（a）从-10℃至约-20℃的硬化温度（Th），在低于5.0MPa的Th下测量的模量; 或（b）-20℃至约-30℃的硬化温度（Th），在低于20.0MPa的Th下测得的模量; 或（c）低于约-30℃的硬化温度（Th）和在低于70.0MPa的Th下测量的模量。

公开(公告)号：US07313303B2

公开(公告)日：2007-12-25

申请号：US10532718

申请日：2002-10-30

申请人： Feliciano Cecchi ,  Alessandro Ginocchio ,  Nunzio Romanini ,  Giovanni Brandi

发明人： Feliciano Cecchi ,  Alessandro Ginocchio ,  Nunzio Romanini ,  Giovanni Brandi

IPC分类号： G02B6/44 ,  G02B6/255

CPC分类号： G02B6/4471 ,  G02B6/4427 ,  G02B6/4467 ,  H02G1/14

摘要： An optical cable having an optical core with a strength member and optical fibers embedded in a thermoplastic material. The optical core has a joint section having substantially the same diameter as the one of the optical core. The joint section has a jointed strength member and a plurality of spliced optical fibers, the jointed portion of the strength member and the spliced portion of the optical fibers being embedded into a cured polymeric material. A method for manufacturing an optical core is also disclosed.

摘要翻译： 一种光缆，其具有带有加强件的光学芯和嵌入在热塑性材料中的光纤。 光学芯具有与光学核心的直径基本相同的直径的接合部分。 接合部具有接合强度部件和多个接合光纤，强化部件的接合部分和光纤的接合部分嵌入固化的聚合物材料中。 还公开了一种用于制造光学芯的方法。

公开(公告)号：US07215857B2

公开(公告)日：2007-05-08

申请号：US10522530

申请日：2002-07-30

申请人： Antonio Mileo ,  Marco Ruzzier

发明人： Antonio Mileo ,  Marco Ruzzier

IPC分类号： G02B6/02 ,  G01N21/00 ,  C03B37/07 ,  C03B37/023

CPC分类号： C03B37/01242 ,  C03B37/0124

摘要： A process and apparatus for elongating an optical fibre preform includes heating the preform so as to soften one region thereof; elongating the preform by submitting the preform to a traction; determining, during the step of elongating, the preform diameter in at least one measuring point along the preform; and controlling the step of elongating on the basis of the determined diameter. During the step of elongating, at least a geometrical parameter of the preform is measured, and the position of said diameter measuring point is controlled according to the measured geometrical parameter. Measuring at least a geometrical parameter of the preform may be accomplished by determining the profile of at least a portion of the softened region, e.g., an image of the neck region profile.

摘要翻译： 一种用于拉伸光纤预制棒的方法和装置包括加热预成型件以软化其一个区域; 通过将预制件提交到牵引力来拉长预成型件; 在所述预成型件的至少一个测量点中，在伸长步骤期间确定所述预制件直径; 并根据确定的直径来控制伸长的步骤。 在伸长的步骤中，测量预型件的至少几何参数，并且根据所测量的几何参数来控制所述直径测量点的位置。 测量预成型件的至少几何参数可以通过确定软化区域的至少一部分的轮廓，例如颈部区域轮廓的图像来实现。