WO2015096555A1 - 用于信号传输方面的线材 - Google Patents

用于信号传输方面的线材 Download PDF

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Publication number
WO2015096555A1
WO2015096555A1 PCT/CN2014/090282 CN2014090282W WO2015096555A1 WO 2015096555 A1 WO2015096555 A1 WO 2015096555A1 CN 2014090282 W CN2014090282 W CN 2014090282W WO 2015096555 A1 WO2015096555 A1 WO 2015096555A1
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wire
layer
signal transmission
shielding
present
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PCT/CN2014/090282
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English (en)
French (fr)
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杨天纬
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杨天纬
黄隆瑞
赵小兵
向丽华
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Application filed by 杨天纬, 黄隆瑞, 赵小兵, 向丽华 filed Critical 杨天纬
Publication of WO2015096555A1 publication Critical patent/WO2015096555A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1808—Construction of the conductors
    • H01B11/1817—Co-axial cables with at least one metal deposit conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H01B11/1058—Screens specially adapted for reducing interference from external sources using a coating, e.g. a loaded polymer, ink or print
    • H01B11/1066—Screens specially adapted for reducing interference from external sources using a coating, e.g. a loaded polymer, ink or print the coating containing conductive or semiconductive material

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  • the invention belongs to the field of wire for signal transmission and electromagnetic shielding technology, and in particular to the use of an electromagnetic shielding film (also known as EMI Shield Film) material instead of the current signal transmission line (cable).
  • EMI Shield Film also known as EMI Shield Film
  • the PE material layer 12 is covered on the copper conductor 11 for signal transmission to ensure the insulation of the copper conductor 11.
  • the Mylar aluminum foil 13 is coated on the outside of the PE material layer 12 for the first electromagnetic shielding.
  • the braid layer 14 is coated on the outer side of the Mylar aluminum foil 13 for use as the second electromagnetic shield.
  • the Mylar aluminum foil 15 is coated on the outer side of the braid layer 14 for use as the third electromagnetic shield.
  • the braid layer 16 is coated on the outer side of the Mylar aluminum foil 15 for use as the fourth electromagnetic shield.
  • the outer layer 17 is coated on the outer side of the braid layer 16, and the product is completed.
  • the PE material layer 22 is covered on the copper conductor 21 for signal transmission to ensure the insulation of the copper conductor 21.
  • the two core wires are twisted to ensure electrical characteristics.
  • the strands of the strands after twisting are twisted.
  • the Mylar aluminum foil 23 is coated on the outer surface of the multi-strand core wire, the ground wire, and the cross skeleton wire.
  • the braid layer 24 is coated on the outer side of the Mylar aluminum foil 23.
  • the outer layer 25 is coated on the outer layer of the braid layer 25.
  • the current wire shielding processing process requires a large amount of materials, a large number of personnel, high-input equipment, and a large number of quality management processes to ensure product quality in multiple processes, resulting in increased production costs and resource consumption. And waste.
  • the object of the present invention is to provide a wire for signal transmission, which solves the problems of complicated shielding process, high production cost, and difficult quality management of the existing wire.
  • the present invention provides a wire for signal transmission, and the technical solution thereof is as follows:
  • a wire for signal transmission comprising a copper conductor, further comprising a shielding layer, the shielding layer being a layer of electromagnetic shielding film.
  • an insulating layer is further included, the insulating layer is coated on the outer side of the copper conductor, and the shielding layer is coated on the outer side of the insulating layer.
  • an outer cover is further included, and the outer cover is coated on the outer side of the shielding layer.
  • the wire is an RF, RG, FFC series signal transmission wire or a coaxial wire or cable for communication and signal transmission.
  • the electromagnetic shielding film includes a stacked insulating layer and a conductive layer.
  • the electromagnetic shielding film includes an insulating layer, a metal layer, and a conductive layer which are sequentially stacked.
  • the insulating layer has a two-layer structure.
  • the present invention uses a single shielding material (electromagnetic shielding film) instead of the current minimum use of ⁇ 2 ⁇ shielding materials, whereby the invention can reduce the use of materials, reduce equipment investment, reduce production processes, and improve production. Efficiency, reduce resource consumption, reduce production costs, and improve transmission performance. It also meets the requirements of the EU and relevant environmental protection regulations and related international safety regulations and domestic safety regulations, while reducing the quality problems caused by multiple shielding processing procedures.
  • 1 to 6 are flow charts showing the production process of the existing RG series wire
  • Figure 13 is a schematic structural view of Embodiment 1 of the present invention.
  • Figure 14 is a schematic structural view of Embodiment 2 of the present invention.
  • FIG. 17 are flowcharts showing the process of producing the third embodiment of the present invention.
  • FIG. 22 are flowcharts showing the steps of producing the fourth embodiment of the present invention.
  • FIG. 23 is a schematic view showing a layered structure of a first electromagnetic shielding film according to various embodiments of the present invention.
  • Figure 24 is a schematic view showing the layered structure of a second electromagnetic shielding film according to various embodiments of the present invention.
  • the first embodiment of the present invention includes a copper conductor 51 and an electromagnetic shielding film 52 as a shielding layer.
  • the electromagnetic shielding film 52 is coated outside the copper conductor 51 to provide electromagnetic shielding.
  • the first embodiment does not have an outer structure, and should be used as a built-in wire of an electronic device.
  • the second embodiment of the present invention includes a plurality of copper conductors 51, an electromagnetic shielding film 521, and an electromagnetic shielding film 522.
  • the plurality of copper conductors 51 are arranged in parallel and at intervals, and the electromagnetic shielding film 521 is coated on the plurality of copper conductors.
  • the electromagnetic shielding film 522 is coated on the other side of the plurality of copper conductors 51.
  • the electromagnetic shielding film 521 and the electromagnetic shielding film 522 are integrally connected to each other.
  • the two adjacent copper conductors 51 are separated.
  • the second embodiment can be used as a cable for an electronic device.
  • the third embodiment of the present invention is an RG series wire.
  • the production process basically includes the first step shown in FIG. 15 , and the PE material layer 32 is covered on the copper conductor 31 for signal transmission to The copper conductor 31 is guaranteed to be insulated.
  • the electromagnetic shielding film 33 is coated on the outside of the PE material layer 32.
  • the outer cover 34 is coated on the outer side of the electromagnetic shielding film 33, and the RG wire product is completed. It can be seen that compared with the prior art, the production process and materials are significantly reduced.
  • the fourth embodiment of the present invention is a Lan cable series wire.
  • the production process basically includes the first step shown in FIG. 18, and the PE material layer 42 is covered on the copper conductor 41 for signal transmission. To ensure that the copper conductor 41 is insulated.
  • the two core wires are twisted to ensure electrical characteristics.
  • the strands of the strands after twisting are twisted.
  • the electromagnetic shielding film 43 is coated on the outer surface of the multi-strand core wire, the ground wire, and the cross skeleton wire.
  • the outer sheath 44 is coated on the outer side of the electromagnetic shielding film 43, and thus, the Lan cable wire product is completed. It can be seen that compared with the prior art, the production process and materials are also significantly reduced.
  • the first electromagnetic shielding film provided by the present invention includes an insulating layer 62 and a conductive layer 63.
  • the outer surfaces of the insulating layer 62 and the conductive layer 63 are further covered with a protective film layer 61 and a protective film layer 62 before being coated on the wire.
  • the second electromagnetic shielding film provided by the present invention includes an insulating layer 72, a metal layer 73, and a conductive layer 74.
  • the outer surfaces of the insulating layer 72 and the conductive layer 74 are further covered with a protective film layer 71 and a protective film layer 75 before being coated on the wire.
  • the protective film layer 61, the protective film layer 62, the protective film layer 71, and the protective film layer 75 may be PET, Mylar, or paper-based materials, and are used as protection before the electromagnetic shielding film is used. Abandoned during the production process.
  • the insulating layer 62 and the insulating layer 72 may be a mixture of a resin and a selecon, and have an insulating function.
  • the insulating layer 62 and the insulating layer 72 may also have a two-layer structure and are divided into an upper insulating layer and a lower insulating layer to produce a better insulating effect.
  • As the metal layer 73 a metal such as copper or silver can be used as a general guide.
  • As the conductive layer 63 and the conductive layer 74 a copper or silver isotropic or anisotropic conductive paste can be used, and the main function is a conduction function.
  • the present invention can be an RF, RG, FFC series wire or a coaxial wire or cable for communication.
  • the "signal line insulation" and “braid winding process” steps are performed in accordance with the current wire production standard process.
  • the electromagnetic shielding film as a “single shielding material” can be coated and hot extruded to complete the coating process, which is simple and easy.
  • the outermost "outer” process is based on current wire production standard processes. For the built-in wire that does not require the "outer” process and has no appearance requirements, the electromagnetic shielding film can be directly used as the "outer” to save the external process and cost.
  • the present invention can achieve the following beneficial effects:
  • the shielding effect After the shielding effect is tested, it can achieve a shielding effect of at least 5db more than the current process.
  • the shielding performance of the electromagnetic shielding film can be adjusted according to the requirements of the user for the shielding effect, and it is not necessary to increase the shielding performance in order to improve the shielding performance, and solve the cost paid by the producer for shielding.
  • the electromagnetic shielding can be adjusted directly.
  • the shielding effect of the film directly enhances the shielding properties of the wire.
  • the electromagnetic shielding film has a lifting capacity of nearly 1 times (50db 97db) on the shielding effect.
  • the EMI characteristics of the alternative materials are superior to the existing shielding materials (aluminum/tin foil), the quality problems such as downtime, replacement, joints, etc. caused by aluminum/tin foil breakage during the production process can be improved, and the process requirements for one-time uninterrupted production can be reduced. , greatly reduce the cost of damage. If the network cable (shielded wire type) is packaged in 305M, the above items cannot occur in 305M, otherwise the production meters produced are all defective products.

Abstract

本发明提供一种用于信号传输方面的线材，其包括铜导体，其中，还包括屏蔽层，所述屏蔽层为一层电磁屏蔽膜。本发明使用单一屏蔽材料(电磁屏蔽膜)来替代目前的最少使用两种屏蔽材料，借此，本发明可以减少材料的使用，减少设备的投资，减少生产的流程，提高生产效率，减少资源消耗，降低生产成本，提升传输性能。并且符合欧盟及相关环境保护规定条例与相关国际安规、国内安规的要求，同时减少因为多次屏蔽加工工序所产生的品质问题。

Description

用于信号传输方面的线材 技术领域
本发明属于信号传输用途的线材以及电磁屏蔽技术领域，具体而言，本发明特别涉及一种利用电磁屏蔽膜(Electromagnetic Shield Film，又称EMI Shield Film)材料来取代现在信号传输线(缆)所使用的屏蔽材料与加工工序的用于信号传输方面的线材。
背景技术
在信号传输线(包含机内线与机外线)的电线生产行业，针对阻抗、衰减、防止信号的干扰以及为了防止内部传输时流失的损耗，需要进行大量的屏蔽加工工艺与工序来达到产品所需要的屏蔽效果要求。
目前，业界为了解决一个屏蔽问题，需要使用最少两层或屏蔽材料与最少两次的加工工序进行一层一层的包覆。
对于RG系列线材，需要实施以下工序：图1所示的工序一，在用于信号传输的铜导体11上覆盖PE材料层12，以保证铜导体11绝缘。图2所示的工序二，在PE材料层12外侧包覆麦拉铝箔13，以作为第一次电磁屏蔽之用。图3所示的工序三，在麦拉铝箔13外侧包覆编织层14，以作为第二次电磁屏蔽之用。图4所示的工序四，在编织层14外侧包覆麦拉铝箔15，以作为第三次电磁屏蔽之用。图5所示的工序五，在麦拉铝箔15外侧包覆编织层16，以作为第四次电磁屏蔽之用。图6所示的工序六，在编织层16外侧包覆外被17，产品完成。
对于Lan cable系列线材，需要实施以下工序：图7所示的工序一，在用于信号传输的铜导体21上覆盖PE材料层22，以保证铜导体21绝缘。图8所示的工序二，两股芯线对绞，以保证电气特性。图9所示的工序三，多股对绞后的芯线总绞。图10所示的工序四，在多股芯线、地线和十字骨架线外包覆麦拉铝箔23。图11所示的工序五，在麦拉铝箔23外侧包覆编织层24。图12所示的工序六，在编织层25外包覆外被25。
由上可知，目前的线材屏蔽加工工艺需要消耗大量的材料、使用大量的人员、投入高昂的设备以及大量的品质管理工序用于保证多重工艺过程的产品品质，造成生产成本的上升和资源的消耗与浪费。
发明内容
本发明的目的在于提供一种用于信号传输方面的线材，以解决现有线材存在的屏蔽工艺复杂、生产成本高、品质管理困难等问题。
为了解决上述问题，本发明提供一种用于信号传输方面的线材，其技术方案如下：
一种用于信号传输方面的线材，包括铜导体，其中，还包括屏蔽层，所述屏蔽层为一层电磁屏蔽膜。
优选地，在所述用于信号传输方面的线材中，还包括绝缘层，所述绝缘层包覆于所述铜导体外侧，所述屏蔽层包覆于所述绝缘层外侧。
优选地，在所述用于信号传输方面的线材中，还包括外被，所述外被包覆于所述屏蔽层外侧。线材
优选地，在所述用于信号传输方面的线材中，所述线材为RF、RG、FFC系列信号传输线材或者通讯及信号传输方面用的同轴电线、电缆。
优选地，在所述用于信号传输方面的线材中，所述电磁屏蔽膜包括叠置的绝缘层和导电层。
优选地，在所述用于信号传输方面的线材中，所述电磁屏蔽膜包括依次叠置的绝缘层、金属层和导电层。
优选地，在所述用于信号传输方面的线材中，所述绝缘层为两层结构。
综上，本发明使用单一屏蔽材料(电磁屏蔽膜)来替代目前的最少使用{2}种屏蔽材料，借此，本发明可以减少材料的使用，减少设备的投资，减少生产的流程，提高生产效率，减少资源消耗，降低生产成本，提升传输性能。并且符合欧盟及相关环境保护规定条例与相关国际安规、国内安规的要求，同时减少因为多次屏蔽加工工序所产生的品质问题。
附图说明
图1-图6为现有RG系列线材的生产工序流程图；
图7-图12为现有Lan cable系列线材的生产工序流程图；
图13为本发明实施例一的结构示意图；
图14为本发明实施例二的结构示意图；
图15-图17为生产本发明实施例三的工序流程图；
图18-图22为生产本发明实施例四的工序流程图；
图23为本发明各实施例的第一种电磁屏蔽膜的分层结构示意图；
图24为本发明各实施例的第二种电磁屏蔽膜的分层结构示意图。
具体实施方式
下面结合附图和具体实施方式对本发明做进一步详细说明。
如图13所示，本发明实施例一包括铜导体51、作为屏蔽层的电磁屏蔽膜52，电磁屏蔽膜52包覆在铜导体51外，以提供电磁屏蔽之用。该实施例一不具有外被结构，应作为电子设备的内置线材，独立应用。
图14所示，本发明实施例二包括多根铜导体51、电磁屏蔽膜521、电磁屏蔽膜522，多根铜导体51之间平行、间隔设置，电磁屏蔽膜521包覆于多根铜导体51一侧，电磁屏蔽膜522包覆于多根铜导体51另一侧，在相邻的两根铜导体51之间的空隙510处，电磁屏蔽膜521、电磁屏蔽膜522连接为一体，以隔开相邻的两根铜导体51。该实施例二可以作为电子设备的排线之用。
如图15-图17所示，本发明实施例三为RG系列线材，其生产工序基本包括：图15所示的工序一，在用于信号传输的铜导体31上覆盖PE材料层32，以保证铜导体31绝缘。图16所示的工序二，在PE材料层32外侧包覆电磁屏蔽膜33。图17所示的工序三，在电磁屏蔽膜33外侧包覆外被34，至此，RG线材产品完成。可见，与现有技术相比，其生产工序、材料均有明显减少。
如图18-图22所示，本发明实施例四为Lan cable系列线材，其生产工序基本包括：图18所示的工序一，在用于信号传输的铜导体41上覆盖PE材料层42，以保证铜导体41绝缘。图19所示的工序二，两股芯线对绞，以保证电气特性。图20所示的工序三，多股对绞后的芯线总绞。图21所示的工序四，在多股芯线、地线和十字骨架线外包覆电磁屏蔽膜43。图22所示的 工序五，在电磁屏蔽膜43外侧包覆外被44，至此，Lan cable线材产品完成。可见，与现有技术相比，其生产工序、材料也均有明显减少。
如图23所示，本发明提供的第一种电磁屏蔽膜包括绝缘层62、导电层63。在包覆于线材之前，绝缘层62、导电层63的两外表面还覆盖有保护膜层61、保护膜层62。
如图24所示，本发明提供的第二种电磁屏蔽膜包括绝缘层72、金属层73、导电层74。在包覆于线材之前，绝缘层72、导电层74的两外表面还覆盖有保护膜层71、保护膜层75。
在上述两种电磁屏蔽膜中，保护膜层61、保护膜层62、保护膜层71、保护膜层75可以为PET、麦拉、纸类材料，作为在使用电磁屏蔽膜前保护之用，制作过程中抛弃。绝缘层62、绝缘层72可以为树脂类、矽利康类混合物，产生绝缘功能。绝缘层62、绝缘层72也可以采用双层结构，分为上层绝缘层与下层绝缘层，以产生更好的绝缘效果。金属层73可以使用铜、银等金属，作为导通用。导电层63、导电层74可以使用铜，银类的等方性或异方性导电胶，主要功能为导通作用。
由上可知，本发明可以为RF、RG、FFC系列线材或者通讯用的同轴电线、电缆。在利用本发明生产制造各类线材、线缆时，“信号线绝缘”与“编织缠绕工序”步骤依据目前电线生产标准工艺进行。作为“单一屏蔽材料”的电磁屏蔽膜经过包覆、热挤压后，即可完成包覆工序，简单易行。最外层的“外被”工序依据目前电线生产标准工艺进行。对于不需要进行“外被”工序，同时没有外观要求的内置线，可以直接以电磁屏蔽膜作为“外被”使用，节省外被工序与成本。
综上，本发明可以取得以下有益效果:
大量节省材料的使用，为环保尽一份力量。
大量简化生产工艺，为生产者节省大量的成本支出。
简化生产流程，降低工艺中的不良率。
屏蔽效果经过检测，可以取得比目前工艺提高最少5db以上的屏蔽效果。
可以依据使用者对屏蔽效果高低的要求，对电磁屏蔽膜进行屏蔽性能的调整，不需要为了提高屏蔽性能再增加工序，解决生产者为了屏蔽而付出的代价。对于未来需要对线材进行更好的屏蔽效果时，直接可以调整电磁屏蔽 膜的屏蔽效果来直接提升线材的屏蔽特性。
目前传统的线材屏蔽工序在屏蔽问题上面，已经接近极限，不容易再提升屏蔽效果，而电磁屏蔽膜在屏蔽效果上面还具备接近1倍以上(50db 97db)的提升能力。
改善传统加工工艺，更能适当的配合未来新产品的特殊要求。
配合EMI产品的特性，更可以有效解决现有信号线材在包装、运输、外在环境及使用方法上所造成的性能损失及下降，防止完成成品后的可变因素发生。
因替代材料EMI特性优于现有屏蔽材料(铝/锡箔)可改善生产过程中因铝/锡箔断裂而造成的停机、更换、接头等质量问题更可降低因需一次性不间断生产的工艺要求，大幅度的降低制损费用。如网络线(屏蔽线类)以305M为包装方式，305M中不能发生上述事项，否则产生的生产米数全为不良品。
由技术常识可知，本发明可以通过其它的不脱离其精神实质或必要特征的实施方案来实现。因此，上述公开的实施方案，就各方面而言，都只是举例说明，并不是仅有的。所有在本发明范围内或在等同于本发明的范围内的改变均被本发明包含。

Claims (8)

  1. 一种用于信号传输方面的线材，包括铜导体，其特征在于，还包括屏蔽层，所述屏蔽层为一层电磁屏蔽膜。
  2. 根据权利要求1所述的用于信号传输方面的线材，其特征在于，还包括绝缘层，所述绝缘层包覆于所述铜导体外侧，所述屏蔽层包覆于所述绝缘层外侧。
  3. 根据权利要求2所述的用于信号传输方面的线材，其特征在于，还包括外被，所述外被包覆于所述屏蔽层外侧。
  4. 根据权利要求1所述的用于信号传输方面的线材，其特征在于，所述线材为RF、RG、FFC系列信号线材。
  5. 根据权利要求1所述的用于信号传输方面的线材，其特征在于，所述线材为通讯及信号传输方面用的同轴电线、电缆。
  6. 根据权利要求1所述的用于信号传输方面的线材，其特征在于，所述电磁屏蔽膜包括叠置的绝缘层和导电层。
  7. 根据权利要求1所述的用于信号传输方面的线材，其特征在于，所述电磁屏蔽膜包括依次叠置的绝缘层、金属层和导电层。
  8. 根据权利要求6或7所述的用于信号传输方面的线材，其特征在于，所述绝缘层为两层结构。
PCT/CN2014/090282 2013-12-23 2014-11-04 用于信号传输方面的线材 WO2015096555A1 (zh)

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