CN104981178B - 用于便携终端机的保护罩及其制造方法 - Google Patents
用于便携终端机的保护罩及其制造方法 Download PDFInfo
- Publication number
- CN104981178B CN104981178B CN201480008235.3A CN201480008235A CN104981178B CN 104981178 B CN104981178 B CN 104981178B CN 201480008235 A CN201480008235 A CN 201480008235A CN 104981178 B CN104981178 B CN 104981178B
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- China
- Prior art keywords
- mobile terminal
- terminal device
- metal layer
- protective cover
- layer
- 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.)
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Classifications
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- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
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- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
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- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Abstract
本发明的用于便携终端机的保护罩包括:罩层;粘着层,其层积于所述罩层的内面;金属层,其附着于所述粘着层,从而执行屏蔽电磁波的功能,因此,能够屏蔽便携终端机产生的电磁波,能够执行去除附着在便携终端机上的各种细菌的抗菌功能,并进一步可将金属层形成为用于接收DMB的天线图案时,则可执行用于接收DMB的天线功能。
Description
技术领域
本发明涉及一种保护罩,其安装在便携终端机的外面,从而保护便携终端机免于外部冲击或接触,更为具体地,涉及一种用于便携终端机的保护罩,其具有电磁波屏蔽、抗菌、或用于接收数字多媒体广播(DMB,Digital Multimedia Broadcasting)的天线(antenna)功能。
技术背景
一般地,便携终端机是便携式电子仪器,其可便携的同时,具有声音及视频通话功能、输入/输出信息的功能、及存储数据的功能等至少一种以上功能。
所述便携终端机随着现有功能的多样化,体现为多媒体播放器(Mult imediaplayer)形态,所述多媒体播放器具有复杂的功能,例如,拍摄照片或视频、播放音乐或视频文件、游戏、接收广播等。
便携终端机具有DMB接收功能时,具有用于接收地面波DMB的天线。在此,为了使用于接收地面波DMB的天线能够发挥良好的接收性能,与终端机的尺寸对比需具有较大的尺寸,并且由此具有外装型天线结构,所述外装型天线结构可拆装在终端机上或可拉伸到外部。
但是,这种以外装型设置在便携终端机上的用于接收地面波DMB的天线,使用时需要拉伸到外部,因此使用起来不方便,并且因从便携终端机凸出相当大的部分,从而具有如下问题:不便于终端机的携带,而且在便携终端机的使用过程中容易受损,需要时刻注意安全使用。
另外,便携终端机经常由使用者携带着,因此便携终端机产生的电磁波会直接到达人体,从而问题在于产生有害性。
此外,便携终端机由使用者用手指等触碰来操作机器,因此便携终端机的表面滋生各种细菌而有害健康。
现有的便携终端机保护罩如登记实用新型公报20-0377332(2005年02年21日)所公开的,作为一种保护罩,其将非透明合成树脂和透明合成树脂结合制作为所需的形状,所述非透明合成树脂和透明合成树脂内侧面附着织物内皮,从而为了保护手机的外表面而包裹手机外观。保护罩在非透明合成树脂和透明合成树脂的织物内皮之间,层积附着具有导电性金属或导电性金属物质的电磁波屏蔽体,并且多个连接板作为导电性金属板附着在非透明合成树脂的外表面,以便为了与所述电磁波屏蔽体连接,贯通非透明合成树脂,与电磁波屏蔽体连接,所述多个连接板具有曲折并把持的连接片。
就所述现有的便携终端机而言,需要将电磁波屏蔽体层积在合成树脂和织物内皮之间后再附着,因此存在如下问题:工艺复杂且制造成本增加。
此外,现有的内置DMB天线的便携电话配件(accessory)如韩国公开专利公报10-2009-0002516(2009年01月09日)所公开的,包括:便携电话配件本体;DMB天线,其将导电性纤维用作导电体,并对包括音频(audio)以及视频(Video)信号的DMB播放信号进行接收,所述导电性纤维将导电性高分子覆盖于基质纤维的表面,所述导电性高分子因分子结构上的特征而具有通电的特性;连接部,其由导电性纤维制造,并执行使所述便携电话的DMB信号输入/输出部、及所述DMB天线相互连接的功能。
就所述现有的DMB天线而言,在配件本体上使用导电性纤维,所述导电性纤维在基质纤维的表面覆盖导电性高分子,因此,问题在于,相比直接使用导电性金属物质,信号接收性能下降。
此外,将导电性纤维织造成天线图案(antenna pattern)的过程中,有可能使覆盖在基质纤维上的导电性高分子被剥离,并且可能产生如下问题:导电性高分子物质被剥离断线后无法起到天线作用。
发明内容
本发明的目的在于提供一种用于便携终端机的保护罩,其在罩层的内面设置导电性金属层,从而能够屏蔽便携终端机产生的电磁波。
本发明的另一个目的在于提供一种用于便携终端机的保护罩,其在罩层的内面设置银丝或银股线,从而不但能够屏蔽电磁波,还能够执行抗菌功能。
本发明的另一个目的在于提供一种用于便携终端机的保护罩,其将形成于罩层内面的金属层形成为天线图案,从而用于接收DMB,因此,无需在便携终端机内设置外装型天线,使用起来方便,并使便携终端机更加小型(slim)化。
本发明的又另一个目的在于提供一种用于便携终端机的保护罩,其利用由导电性金属形成的金属丝来制造导电性股线,从而可提高天线性能,并防止金属丝变形或断线的现象,进而防止天线图案断线。
本发明的又另一个目的在于提供一种用于便携终端机的保护罩及其制造方法,其将包含Ag纳米物质的纺丝溶液电纺丝在罩层的内面,并形成Ag纳米网层,从而能够屏蔽便携终端机产生的电磁波的同时执行抗菌功能,并提高血液循环的同时放射远红外线,从而促进健康。
本发明的又另一个目的在于提供一种用于便携终端机的保护罩及其制造方法,其通过在纺丝溶液中添加颜料,从而不会使露出在外部的Ag氧化的现象显示出来,进而美化外观。
本发明的又另一个目的在于提供一种用于便携终端机的保护罩及其制造方法,其在罩层附着导电性金属板来屏蔽电磁波,并将包含Ag纳米物质的纺丝溶液电纺丝在导电性金属板,从而形成Ag纳米网层,进而执行抗菌功能。
为了达到所述目的,本发明的用于便携终端机的保护罩包括:罩层;粘着层,其层积在所述罩层的内面;金属层,其附着于所述粘着层,从而执行屏蔽电磁波的功能。
本发明的金属层可形成为导电性金属薄膜,或形成为丝(wire)状后相互垂直相交排列,从而可形成为网状。
本发明的金属层可由纯银(Ag)或含银(Ag)的银合金形成,以便具有抗菌性能。
本发明的金属层由双重金属丝形成,所述双重金属丝可包括:中心金属层,其强度比银(Ag)高,且延伸率与银相同或高于银;银(Ag)层,其包裹在所述中心金属层的外面。
本发明的金属层由导电性股线形成,所述导电性股线可包括:第一纤维丝,其由合成纤维或天然纤维形成;金属丝,其以螺旋状缠绕于所述第一纤维丝的外周面,并具有抗菌性及导电性;一股以上的第二纤维丝,其与绕有一股以上金属丝的第一纤维丝进行合捻。
本发明的用于便携终端机的保护罩包括:罩层,其为树脂材料;粘着层,其附着于所述罩层的内面;金属层,其附着于所述粘着层,从而执行屏蔽电磁波的功能;纤维层,其层积于所述金属层,从而保护金属层。
本发明的用于便携终端机的保护罩包括:罩层;Ag纳米网层,其层积于所述罩层的内面,并通过对包含Ag纳米物质的纺丝溶液进行电纺丝而形成。
本发明的纺丝溶液可由Ag纳米物质、能够进行电纺丝的高分子物质、及溶剂按照一定比例混合而形成。
本发明的纺丝溶液还可包括颜料,所述颜料不会使Ag氧化现象显示出来。
本发明的保护罩包括:罩层;导电性金属层,其层积于所述罩层的内面;Ag纳米网层,其层积于所述导电性金属层,并通过对包含Ag纳米物质的纺丝溶液进行电纺丝而形成。
本发明的导电性金属层可形成为导电性金属板,或在制造为丝状后,形成为相互垂直相交排列的网状。
此外,本发明提供一种用于便携终端机的保护罩的制造方法,其包括如下步骤:准备罩层;以及形成Ag纳米网层,通过对包含Ag纳米物质的纺丝溶液进行电纺丝,从而层积于所述罩层的内面。
如上所述,本发明的用于便携终端机的保护罩在罩层的内面设置导电性金属层,从而能够屏蔽便携终端机产生的电磁波。
此外,本发明的用于便携终端机的保护罩在罩层的内面设置银丝或银股线,从而不仅能够屏蔽电磁波还能够执行抗菌功能。
此外,本发明的用于便携终端机的保护罩将形成于罩层的内面的金属层形成为天线图案,从而用于接收DMB,因此,便携终端机内不需要设置外装型天线,从而方便使用,并可使便携终端机更小型化。
此外,本发明的用于便携终端机的保护罩通过采用由导电性金属形成的金属丝来制造导电性股线,所以能够提高天线性能,并在制造导电性股线时,使得一次工艺的方向与二次工艺的方向相同,从而制造出金属丝插入至纤维丝内部的结构,以防止金属丝的变形或断裂现象,进而能够防止天线图案断线,所述一次工艺为在纤维丝上缠绕金属丝,所述二次工艺为将所述股线与股线或将股线与纤维丝进行合捻。
此外,本发明的用于便携终端机的保护罩将包含Ag纳米物质的纺丝溶液电纺丝在罩层的内面,从而形成纳米网层,由此屏蔽便携终端机产生的电磁波的同时,执行去除附着在便携终端机表面上的各种细菌的抗菌功能,并提高血液循环,并放射远红外线。
此外,本发明的用于便携终端机的保护罩通过在纺丝溶液中添加颜料,达到外观美观和不会使露出在外部的Ag氧化现象显示出来。
此外,本发明的用于便携终端机的保护罩通过在罩层附着导电性金属板来屏蔽电磁波,并通过将包含Ag纳米物质的纺丝溶液电纺丝在导电性金属板来形成Ag纳米网层,从而执行抗菌功能的同时,可提高屏蔽电磁波的性能。
附图说明
图1是安装了根据本发明的第一个实施例的保护罩的便携终端机的立体图。
图2是根据本发明的一个实施例的保护罩的剖面图。
图3是根据本发明的一个实施例的金属层的平面图。
图4是根据本发明的一个实施例的在金属层上形成天线图案(antenna pattern)的平面图。
图5是根据本发明的另一个实施例的在金属层上形成天线图案(antennapattern)的平面图。
图6是根据本发明的一个实施例的作为金属层使用的双重金属丝的剖面图。
图7是根据本发明的一个实施例的作为金属层使用的导电性股线的侧面图。
图8及图9是根据本发明的一个实施例的制造导电性股线的制造工艺的工艺顺序图。
图10是根据本发明的第二实施例的保护罩的剖面图。
图11是将根据本发明的第二实施例的保护罩的纤维层和金属层织造成一体形态的剖面图。
图12是根据本发明的第三实施例的保护罩的剖面图。
图13是根据本发明的第四实施例的保护罩的剖面图。
图14是根据本发明的第四实施例的网状型(mesh type)金属层的平面图。
图15是根据本发明的形成银(Ag)纳米网层的电纺丝装置的构成图。
图16a及图16b是根据本发明的第三及第四实施例,为了在有或没有Ag纳米网层的培养基上接种金黄色葡萄球菌(Staphylococcus aureus)进行抗菌能力测试而对培养状态进行拍摄的照片。
图17a及图17b是根据本发明的第三及第四实施例,为了在有或没有Ag纳米网层的培养基上接种肺炎杆菌(Klebsiella pneumoniae)进行抗菌能力测试而对培养状态进行拍摄的照片。
具体实施方式
以下参照附图对根据本发明的实施例进行详细说明。在此过程中,图中所示的构成要素的大小或形状等可能根据说明的明了性和方便性的需要被夸张表示。此外,考虑本发明的构成及作用特别定义的术语,可能因使用者、运用者的意图或惯例而发生变化。对所述术语的定义应以本发明整体的内容为基础而进行定义。
图1是安装了根据本发明的一个实施例的保护罩的便携终端机的立体图。图2是根据本发明的第一实施例的保护罩的剖面图。
参照图1,根据本发明的一个实施例的便携终端机包括:终端机本体100,其在前面设有显示窗(display window)110及触摸屏(touch panel);保护罩200,其设置为包裹在终端机本体100的外面,并具有可开闭的结构,以便能够使显示窗110被开放。
在本实施例中记述的便携终端机包括便携电话、智能手机(Smart Phone)、笔记本电脑(Notebook Computer)、用于数码播放的终端机、掌上电脑(PDA,Personal DigitalAssistants)、便携式多媒体播放器(PMP,Portable Multimedia Player)、导航仪(navigation)等一切可便携的电子仪器。
保护罩200包括:固定部210,其结合在便携终端机100的后面;盖子部220,其可开闭地延长于固定部210,从而覆盖便携终端机100的前面;连接部230,其可开闭地连接固定部210和盖子部220之间。
如图2所示,所述保护罩200包括:罩层50,其维持罩的强度;粘着层60,其附着于罩层50的内面;金属层70,其粘着在粘着层60,并由可屏蔽电磁波的导电性金属形成。
此处,金属层70可使用具有优良的导电性的Ni、Cu、Al等导电性金属及其合金。
所述金属层70可以形成为导电性金属薄膜,并且如图3所示,将导电性金属制造成厚度较薄的丝(wire)形态后,排成网状,从而具有粘着在粘着层60的构造。
此外,金属层70为了赋予抗菌性,可使用将纯银(Ag)或银合金制造为丝形态的银丝,所述银合金含银(Ag)且具有导电性。换句话说,通过抽丝加工将银(Ag)或银合金制造成丝形态后,再将丝相互垂直相交排列而制造成网(mesh)形态。使用纯银(Ag)或银合金形成金属层时,使得作为银(Ag)的固有性质的抗菌功能及屏蔽电磁波成为可能。
作为本实施例的金属层70的另一个实施例,当执行用于接收DMB的天线作用时,金属层70可做成天线图案。
换句话说,如图4所示,金属层70包括:天线部310,其形成为图案形态,以便具有与DMB天线相同的天线图案;电磁波屏蔽部320,其以一定间隔排列在天线部310的下侧,执行抗菌功能及屏蔽电磁波的功能。
天线部310的两侧末端部分形成有与便携终端机进行电连接的连接端子330。所述连接端子330的连接构造为,在天线部的连接端子330设置连接器(connecter),并将所述连接器插入在设置于便携终端机的插口(socket)完成连接,并且在便携终端机的制造过程中,可具有一体地连接于连接端子330和便携终端机的结构,并且可实现为多种连接结构。
此外,如图5所示,根据另一个实施例的金属层70可适用如下构造:在罩层50的整个面上形成天线图案形态,从而将天线的尺寸最大化,以提高接收性能。所述天线图案可根据便携终端机的接收能力形成多种形状。
根据所述另一个实施例的导电性股线,同样如果在纤维层的整个面上形成天线图案形态,则既能够执行天线的功能还能同时执行抗菌性及屏蔽电磁波的功能。
此外,如图6所示,为了提高强度,并降低制造成本,金属层可采用具有双重结构的双重金属丝80制造。换句话说,双重金属丝80包括:中心金属层82,其强度比银(Ag)高,且延伸率接近银;银(Ag)层84,其包裹在中心金属层82的外面。
在此,中心金属层82可使用具有导电性的Cu或Cu-Zn合金等。
如此,将双重金属丝80相互垂直相交排列制造成网状后,通过粘着层60附着于罩层50。所述双重金属丝80的情况,可赋予作为银的固有性质的抗菌性能,从而不但能够屏蔽电磁波还能执行抗菌功能。
此外,金属层70也可采用导电性股线制造。换句话说,如图7所示,导电性股线300包括:第一纤维丝10;金属丝20,其以螺旋状缠绕于第一纤维丝10的外周面,并具有抗菌性及导电性;一股以上的第二纤维丝40,其与绕有一股以上的金属丝20的第一纤维丝10进行合捻。
在此,金属丝20具有电磁波屏蔽性能时,可使用铝(aluminum)或铜等导电性金属,并且兼备抗菌功能时,可使用纯银(Ag)或银合金,以便可具有抗菌性。
根据本实施例的导电性股线具有能够防止金属丝20变形或断裂现象的构造。
根据如上所述构成的一个实施例的导电性股线制造工艺如图8及图9所示,其包括:第一工艺,在作为芯丝使用的第一纤维丝10的外周面沿一个方向将金属丝20缠绕成多个捻度(T/M),从而制造一次股线30;第二工艺,如图7所示,将一股以上的一次股线30和一股以上的第二纤维丝40进行捻丝,从而制造二次股线。
第一纤维丝10及第二纤维丝40可使用强度足够大的可用作缝纫丝的天然纤维或合成纤维中的某一个。
天然纤维可采用由如下的某一种形成的纤维,例如,韩纸、聚乳酸(PLA,polylactic acid)、棉、麻、毛、绢。
合成纤维可使用由如下某一种组成的纤维,例如,尼龙(nylon)、聚酯(polyester)类、聚氯乙烯(Polyvinyl Chloride)类、聚丙烯腈(polyacrylonitrile)类、聚酰胺(polyamide)类、聚烯烃(polyolefin)类、聚氨酯(polyurethane)类、聚氟乙烯(polyfluoroethylene)类。
另外,合成纤维可使用通过使用以下聚合物所获得的纤维。
-聚乙烯(polyethylene)类树脂,比如低密度聚乙烯树脂(LDPE)、超低密度聚乙烯树脂(LLDPE)、高密度聚乙烯(HDPE)、乙烯-醋酸乙烯酯树脂(EVA)、其共聚物等
-聚苯乙烯(polystyrene)类树脂,比如HIPS、GPPS、SAN等
-聚丙烯(polypropylene)类树脂,比如HOMO PP、RANDOM PP、其的共聚物
-透明或一般ABS(丙烯腈-丁二烯-苯乙烯三元共聚物,acrylonitrile-butadiene-styrene terpolymer)
-硬质PVC
-工程塑料(engineering plastics),比如尼龙(Nylon)、PRT、PET、POM(乙缩醛(acetal))、PC、聚氨酯(urethane)、粉体树脂、PMMA、PES等
此外,第一纤维丝10及第二纤维丝40除了上述说明的天然纤维或合成纤维以外,可使用任何能够作为芯丝使用的纤维丝。
为了使金属丝20具有抗菌性,可使用纯银(Ag)或含银(Ag)且具有导电性的银合金,或铝、铜等导电性金属。
在第一纤维丝10的外周面缠绕金属丝20时,使金属丝20的捻度(T/M)具有比规定的正式捻度(T/M)计算值高的捻度(T/M),金属丝20以与盘簧(coil spring)相同的螺旋形状缠绕于第一纤维丝10的外周面。
作为一个例子,金属丝20的捻度(T/M)设置为600~1500T/M,从而可具有较高的捻度。
就在第一工艺中所制造的一次股线30的金属丝20缠绕方向与在第二工艺中一次股线30与纤维丝40捻丝时的方向而言,如果以相同的方向进行作业,则能够实现使金属丝20进入纤维丝40内部的形态,从而使金属丝20不会凸出到纤维丝40的外部。
换句话说,就本发明的导电性股线而言,在一次工艺中使第一纤维丝10的外周面上的金属丝20具有设定值以上的捻度(T/M),并缠绕成如同盘簧的螺旋状,因此当第一纤维丝10上发生伸缩时,使得金属丝20发挥与盘簧相同的功能得以松弛或收缩,因此可防止发生变形。
此外,在二次工艺中,将一个以上的股线30与一个以上的第二纤维丝40进行合捻时,因缠绕方向与金属丝20的缠绕方向相同,所以实现为金属丝20进入第二纤维丝40的内部的结构,从而防止金属丝20凸出到第二纤维丝40的外部。
因此,根据本实施例的插入有金属丝的导电性股线当与纤维层织造成一体时,或缝合在纤维层上时,即使经过必要的强度和反复的往返运动也依然能够防止插入到纤维丝中的金属丝发生变形。
图10是根据本发明的第二实施例的保护罩的剖面图,图11是将根据本发明的第二实施例的保护罩的纤维层和金属层织造成一体形态的剖面图。
参照图10,根据本发明的第二实施例的保护罩包括:罩层50,其维持罩的强度;粘着层60,其附着于罩层50的内面;金属层70,其粘着于粘着层60,并由能够屏蔽电磁波的导电性金属材料形成;纤维层90,其层积在金属层70,从而保护金属层70,并保持柔软的质感。
此时,金属层的形态可形成为上述说明中的导电性金属薄膜、网状的导电性金属形态中的某一种,并可使用将纯银或含银的银合金制造成丝状的银丝,并且可使用双重构造的银丝或导电性股线。
此时,金属层使用银丝或导电性股线时,可与纤维层一起织造。换句话说,如图11所示,可具有双重构造,所述双重构造为当织造纤维层时在纤维层的下部一起织造金属层。
如上,纤维层和金属层一起织造时,通过纤维层的缝隙可露出金属层,从而适合执行抗菌功能,并能够简化制造工艺。
图12是根据本发明的第三实施例的保护罩的剖面图。图13是根据本发明的第四实施例的保护罩的剖面图。图14是根据本发明的第四实施例的网状型金属层的平面图。
参照图12,根据本发明第三实施例的保护罩包括:罩层510,其维持罩的强度;Ag纳米网层520,其通过将包含Ag纳米物质的纺丝溶液电纺丝在罩层510的内面而形成。
此时,Ag纳米网层520含有Ag纳米物质,从而执行抗菌功能的同时执行屏蔽电磁波的功能。
Ag纳米物质作为如同硝酸银(AgNO3)、硫酸银(Ag2SO4)、氯化银(AgCl)的银(Ag,Silver)金属盐,可使用包括粉末状的多种固态的Ag纳米物质。
根据本实施例的Ag纳米网层520通过对包含Ag纳米物质的纺丝溶液进行电纺丝,从而制造超细纤维股丝后,将超细纤维股丝按照一定厚度堆积,从而形成纳米网。
此处,适用于本发明的纺丝方法可使用一般的电纺丝(electrospinning)、空气电纺丝(AES:Air-Electrospinning),电喷射(electrospray),电喷射纺丝(electrobrownspinning),离心静电纺丝(centrifugal electrospinning),闪电电纺丝(flash-electrospinning)中的某一种。
换句话说,本发明的Ag纳米网层520可适用任何能够将超细纤维股丝制作成堆积起来的形态的纺丝方法。
纺丝溶液由Ag纳米物质、能够电纺丝的高分子物质、及溶剂按照一定比例混合而成。此时,优选地,Ag纳米物质具体使用硝酸银(AgNO3)。
此外,Ag的情况,因附着于罩层510的内面,从而处于暴露在外部的状态,所以随着Ag氧化可能会使颜色发生变化。为了防止此问题,在纺丝溶液中添加颜料,从而不会使Ag氧化显示出来,并可实现保护罩的设计漂亮。
此时,颜料的颜色可使用黑色或灰色,以及其他能够不会使Ag氧化显示出来的各种颜色。
此时,可电纺丝的高分子物质可使用例如,聚偏氟乙稀(PVDF,Poly(vinylidenefluoride))、聚(偏二氟乙烯-co-六氟丙烯)(Poly(vinylidene fluoride-co-hexafluoropropylene))、全氟聚合物(perfluoropolymer)、聚氯乙烯(polyvinylchloride)或聚偏二氯乙烯(polyvinylidene chloride)及它们的共聚物及包括聚乙二醇二烷基醚(polyethyleneglycol dialkylether)及聚乙二醇二烷基酯(polyethyleneglycol dialkylester)的聚乙二醇(polyethylene glycol)衍生物,包括聚(甲醛-低聚-氧乙烯)(poly(oxymethylene-oligo-oxyethylene))、聚氧化乙烯(polyethylene oxide)、及聚环氧丙烷(polypropylene oxide)的聚氧化物(poly oxide),包括聚乙酸乙烯酯(polyvinyl acetate)、聚(乙烯吡咯烷酮-醋酸乙烯酯)(poly(vinylpyrrolidone-vinyl acetate))、聚苯乙烯(Polystyrene)、及聚苯乙烯丙烯腈共聚物(Polystyrene acrylonitrile copolymer)、聚丙烯腈甲基丙烯酸甲酯共聚物(polyacrylonitrile methylMethacrylate copolymer)的聚丙烯腈共聚物(polyacrylonitrile copolymer)、聚甲基丙烯酸甲酯(Polymethylmethacrylate)、聚甲基丙烯酸甲酯共聚物(Polymethylmethacrylate copolymer)、及它们的混合物。
如此,本发明的Ag纳米网层520通过电纺丝方法形成于罩层的表面,因此优点在于,根据纺丝溶液的纺丝量可制造出各种厚度,且表面光滑具有良好的触感。
此外,为了屏蔽电磁波及抗菌功能而形成Ag层时,通过电纺丝方法形成,从而制造简单,可防止Ag层分离的现象,并可制造为各种厚度。
如图13所示,根据第四实施例的用于便携终端机的保护罩包括:罩层510,其维持罩的强度;金属层530,其附着于罩层510的内面,从而执行屏蔽电磁波的功能;Ag纳米网层520,其层积于金属层530,并通过对包含Ag纳米物质的纺丝溶液进行电纺丝而形成。
此时,金属层530可使用导电性能优越的Ni、Cu、Al等导电性金属或其合金。
所述金属层530可形成为导电性金属薄膜,并如图14所示,将导电性金属制造成厚度薄的细丝532状后相互垂直相交排列形成网状。
此外,金属层530可使用将纯银或含银的银合金制造成丝状后,相互垂直相交排列成网状的银丝。
金属层530和Ag纳米网层520分别制造后,可在后续的工艺中层压制造,在金属层530的表面直接进行电纺丝并制造Ag纳米网层520。
图15是根据本发明的形成Ag纳米网层的电纺丝装置的构成图。
本发明的电纺丝装置包括:混合罐(Mixing Tank)550,其储藏由Ag纳米物质、高分子物质、及溶剂按照一定比例混合而成的纺丝溶液;喷丝口(nozzle)54,其与高电压发生器连接,并与混合罐550连接,从而能够纺出超细纳米纤维;收集器(col lector)556,其位于喷丝口554的下面,设置成能够前后或左右移动,从而捕捉从喷丝口554纺出的超细纳米纤维并形成一定厚度的Ag纳米网层520。
混合罐550中包括搅拌机558,其在均匀混合Ag纳米物质、高分子物质、及溶剂的同时,使纺丝溶液保持一定的粘度。
通过在收集器556和喷丝口554之间施加90~120Kv的高电压静电力来纺出超细纤维股丝516,并使得超细纤维股丝516堆积在收集器556形成Ag纳米网层520。
喷丝口554具备空气喷射装置574,从而防止从喷丝口554纺出的超细纤维股丝516未能被收集器556捕捉而飞走。
本发明的多孔(multi-hole)纺丝组件喷嘴(Spin pack nozzle)将空气喷射的空气压力设置为0.1~0.6MPa范围。所述情况下,如果空气压力低于0.1MPa,则起不到捕捉/收集的作用,如果超过0.6MPa,则因喷丝口的末端部分被固化,而产生喷针(needle)堵塞现象,进而引起纺丝故障。
只形成Ag纳米网层520时,在收集器56放置离型膜540,并在罩层的内面直接电纺丝时,在收集器56放置罩层,并在金属层直接电纺丝时,在收集器56放置金属层。
换句话说,如本发明的第三实施例所示,在罩层的内面直接形成Ag纳米网层520时,在收集器556的上面放置罩层后,由喷丝口向罩层的内面纺出超细纤维股丝,并在罩层的内面堆积超细纤维股丝而形成一定厚度的Ag纳米网层520。
此外,如本发明的第四实施例所示,在罩层附着金属层时,在收集器的上面放置金属层后,由喷丝口向金属层纺出超细纤维股丝,并在金属层的表面堆积超细纤维股丝,从而形成一定厚度的Ag纳米网层520。
此外,分别制造金属层和Ag纳米网层520后,相互层压制造时,在收集器的上面放置离型膜后,由喷丝口向离型膜的表面纺出超细纤维股丝,并在离型膜的表面堆积超细纤维股丝,从而形成一定厚度的Ag纳米网层520。
此时,如上述说明的,金属层可使用导电性金属板,可使用网状的导电性金属板,可使用通过使用Ag丝而形成网状的银丝。
收集器564的后侧具备加压辊(roller)580,所述加压辊580对Ag纳米网层520施加压力(压延(calendering)),从而制成一定的厚度。
以下对利用具有所述构成的电纺丝装置制造Ag纳米网层的工艺进行说明。
首先,随着收集器564的操作,工作台(table)向前后方向或前后/左右方向移动。然后,通过在收集器564和第一喷丝口554之间施加高电压静电力,在第一喷丝口554将纺丝溶液制成超细纤维股丝516从而纺出到收集器。
那么,超细纤维股丝516堆积在收集器而形成Ag纳米网层520。
此时,在设置在喷丝口554的空气喷射装置574纺出纤维股丝516时,向纤维股丝516喷射空气,从而纤维股丝516不会飞起来,而是被捕捉并被收集到收集器。
此时,通过在收集器放置离型膜、罩层、或金属层中的某一个,从而可在离型膜形成Ag纳米网层520,或在罩层形成Ag纳米网层520,或在金属层形成Ag纳米网层520。
图16a及图16b是根据本发明的第三及第四实施例,为了在有或没有Ag纳米网层的培养基上接种金黄色葡萄球菌(Staphylococcus aureus)进行抗菌能力测试而对培养状态进行拍摄的照片,图17a及图17b是根据本发明的第三及第四实施例,为了在有或没有Ag纳米网层的培养基上接种肺炎杆菌(Klebsiella pneumoniae)进行抗菌能力测试而对培养状态进行拍摄的照片。
为了对适用于本发明的第三及第四实施例的Ag纳米网层进行抗菌能力测试,首先,将聚丙烯腈(polyacrylonitrile,PAN)高分子和硝酸银(AgNO3,纯度99.999%,一级试剂)混合后,溶解于溶剂二甲基乙酰胺(DMAc)以达到12wt.%,从而制造纺丝溶液。此时,硝酸银的含量相对于PAN为5wt.%
之后,将所制造的纺丝溶液输送到纺丝喷嘴组件,从而在如下纺丝环境下实施电纺丝,从而获得Ag纳米网层:外施电压25kV,与喷丝口和集电体的距离为20cm,30℃以便使吐出量达到每分钟0.05cc/ghole,相对湿度60%。
由此制造的Ag纳米网层,由含有硝酸银5wt.%的PAN纳米纤维层积而成。为了评价抗菌力,按照测试标准KS K 0693-2001的方法实施了抗菌实验。使用的菌株有引起食物中毒的主要原因的金黄色葡萄球菌(Staphylococcus aureus ATCC 6538)(菌株1)及作为肺炎球菌的肺炎杆菌(Klebsiella pneumoniae ATCC 4352)(菌株2),将其在0.05%的非离子表面活性剂(Snogen)上接种,从而将37℃下培养24小时的菌作为接种源使用。FITI(Friendof Industry Technology Information)试验研究院的试验结果显示,在存在适用于本发明的Ag纳米网层的培养基(#1)上接种培养,与在不存在Ag纳米网层的培养基(BLANK)上接种培养相比,抑菌减少率为99.9%,抗菌效果显著。
换句话说,能够知道存在Ag纳米网层的培养基(#1)的图16b及图17b相比不存在Ag纳米网层的培养基(BLANK)的图16a及图17a,所培养的菌株明显减少。
虽然在上述中用特定的优选实施例对本发明进行了举例示出和说明,但本发明不限于上述实施例,在不超出本发明精神的范围内,在本发明所属的技术领域内具有一般知识的技术人员可进行多种变更和修订。
产业利用可能性
本发明提供一种用于便携终端机的保护罩,其具有屏蔽电磁波、抗菌或用于DMB接收的天线功能。
Claims (10)
1.一种用于便携终端机的保护罩,其包括:
罩层;
粘着层,其层积于所述罩层的内面;以及
金属层,其附着于所述粘着层,从而执行屏蔽电磁波的功能;
所述的用于便携终端机的保护罩还包括纤维层,所述纤维层层积于所述金属层,从而保护所述金属层;
所述金属层由银丝、导电性股线、及双重金属丝中的某一个形成,并在织造所述纤维层时,一起织造在所述纤维层的下侧。
2.根据权利要求1所述的用于便携终端机的保护罩,其特征在于,
所述金属层形成为导电性金属薄膜。
3.根据权利要求1所述的用于便携终端机的保护罩,其特征在于,
所述金属层形成为丝状,相互垂直相交排列,从而形成为网状。
4.根据权利要求1所述的用于便携终端机的保护罩,其特征在于,
所述金属层为纯银或银合金,以便能够具有抗菌性能。
5.根据权利要求1所述的便携终端机的保护罩,其特征在于,
所述金属层由双重金属丝形成,
所述双重金属丝包括:中心金属层,其强度比银高,且延伸率与银相同或高于银;银层,其包裹在所述中心金属层的外面。
6.根据权利要求1所述的用于便携终端机的保护罩,其特征在于,
所述金属层由导电性股线形成,所述导电性股线包括:
第一纤维丝,其由合成纤维或天然纤维形成;
金属丝,其以螺旋状缠绕于所述第一纤维丝的外周面,并具有抗菌性及导电性;以及
一股以上的第二纤维丝,其与缠绕有一股以上的金属丝的第一纤维丝合捻。
7.根据权利要求6所述的用于便携终端机的保护罩,其特征在于,
所述金属丝由纯银、银合金、或其他导电性金属形成。
8.根据权利要求1所述的用于便携终端机的保护罩,其特征在于,
所述金属层形成为用于接收DMB的天线图案,从而执行用于接收DMB的天线的功能。
9.根据权利要求8所述的用于便携终端机的保护罩,其特征在于,
在所述天线图案的两端形成连接端子,并且所述连接端子与便携终端机进行电连接。
10.一种用于便携终端机的保护罩的制造方法,其特征在于,包括如下步骤:
准备罩层;以及
形成Ag纳米网层,对包含Ag纳米物质的纺丝溶液进行电纺丝,从而层积于所述罩层的内面;
所述罩层的内面还层积有导电性金属层,
将所述纺丝溶液电纺丝在所述导电性金属层,从而在所述导电性金属层形成所述Ag纳米网层;
所述导电性金属层由银丝、导电性股线、及双重金属丝中的某一个形成,并在织造纤维层时,一起织造在所述纤维层的下侧。
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