CN104136211A - 防水传声片材及其生产方法 - Google Patents

防水传声片材及其生产方法 Download PDF

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CN104136211A
CN104136211A CN201380009515.1A CN201380009515A CN104136211A CN 104136211 A CN104136211 A CN 104136211A CN 201380009515 A CN201380009515 A CN 201380009515A CN 104136211 A CN104136211 A CN 104136211A
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waterproof
sheet material
watertight composition
supporting layer
layer
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CN104136211B (zh
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徐寅踊
李承勋
黄俊植
丁榕湜
金京秀
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Amogreentech Co Ltd
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    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
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    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/08—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons
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Abstract

公开了一种防水传声片材和生产该防水传声片材的方法的技术，所述防水传声片材的厚度能够容易地被调整，所述防水传声片材具有改进的传声效率以及进一步改进的防水性。为此，本发明的防水传声片材附接到壳体的声孔上，并且包括：支撑层，所述支撑层由膜型多孔构件形成并且形成在壳体的内部；以及防水层，所述防水层形成在支撑层的一侧上，形成为多孔纳米网并且从壳体向外暴露，在多孔纳米网中多个细纤维束交叉堆叠成层。

Description

防水传声片材及其生产方法
技术领域
本发明涉及一种防水传声片材及其制造方法。更具体地，本发明涉及一种防水传声片材及其制造方法，所述防水传声片材的厚度能够容易地被调整，并且所述防水传声片材具有高的传声效率和优异的防水性。本申请要求于2012年12月11日提交的韩国专利申请号10-2012-0143372和2013年12月11日提交的韩国专利申请号10-2013-0154025的权益，它们通过全文引用的方式并入本申请中。
背景技术
最近，已经越来越多地使用移动电子设备，诸如便携式终端、数码相机和笔记本电脑。由于这样的移动电子设备在携带的同时进行使用，所以需要具有防水特性。然而，这样的移动电子设备以这样的方式配置：音孔被形成在设置有扬声器或麦克风的该移动电子设备部分中，从而水或灰尘通过音孔渗入移动电子设备中。
因此，提供在其中具有用于传声以及阻断水或灰尘的防水传声片材的音孔。这样的防水传声片材的生产必须考虑到防水特性和传声效率。
与此相关，韩国专利申请公开号10-2010-0041839(2010年4月22日)公开了由多孔聚四氟乙烯膜制成的防水传声片材。然而，这种传统的防水传声片材的问题在于：由于它仅由多孔聚四氟乙烯膜构成，而由于片材使用时间的增加，通过外部施加的冲击力或声压使得多孔聚四氟乙烯膜的微孔扩大，从而劣化了防水性能。
发明内容
技术问题
因此，设计了本发明来解决上述问题，并且本发明用于提供一种具有改进的防水性能的防水传声片材，以及制造该防水传声片材的方法。此外，本发明用于提供一种能够易于处理的防水传声片材。
进一步地，本发明用于提供一种防水传声片材，该防水传声片材的总厚度能够容易地被调整。
技术解决方案
为了实现上述目的，本发明的一个方面提供了一种防水传声片材，该防水传声片材附接至壳体的音孔，并且包括：支撑层，所述支撑层由膜状多孔材料制成并且形成在壳体中；以及防水层，所述防水层以多孔纳米网的形状形成在所述支撑层的一侧上并且暴露至所述壳体的外部，在所述多孔纳米网中，细纤维束交叉地成层。
在本文中，所述支撑层可由无纺布或网孔层形成。
此外，所述防水层可利用电纺丝将聚合物材料施加到所述支撑层上而形成。
此外，所述防水层可由含有聚偏二氟乙烯(PVDF)的材料制成。
防水传声可进一步包括：外部支撑层，所述外部支撑层由膜状多孔材料制成，形成在所述防水层的一侧上并且暴露至所述壳体的外部，在所述防水层的另一侧上提供有所述支撑层。
本发明的另一个方面提供了一种用于生产防水传声片材的方法，所述方法包括以下步骤：提供由膜状多孔材料制成的支撑层；制备含有聚合物材料的纺丝溶液；以及利用电纺丝将纺丝溶液施加到支撑层的一侧以形成防水层，其中，所述防水层以多孔纳米网的形状形成，在所述多孔纳米网中，细纤维束交叉地成层。
在本文中，支撑层可由无纺布或网孔层形成。
此外，聚合物材料可包含聚偏二氟乙烯(PVDF)。
所述方法还可包括以下步骤：在形成防水层的步骤之后，在所述防水层的一侧上形成由膜状多孔材料制成的外部支撑层，在所述防水层的另一侧上提供有所述支撑层。
有益效果
由于根据本发明的防水传声片材被配置为使防水层暴露在壳体的外部中，所以能够改进其防水性能。此外，由于多孔支撑层形成在防水层的一侧上，所以能够容易地处理该防水传声片材。
此外，由于通过电纺丝形成防水层，所以该防水传声片材的总厚度能够容易地被调节。因此，根据本发明，提供了一种适用于小型电子设备的薄的防水传声片材。而且，由于能够容易地调节所述防水传声片材的厚度，所以也能够容易地调节其透气性，从而实现优异的声特性。
附图说明
图1是示出了根据本发明的实施方式的防水传声片材的结构的截面图。
图2是示出了将防水传声片材应用至电子设备的壳体的实例的截面图。
图3是示出了根据本发明的另一实施方式的防水传声片材的结构的截面图。
图4是说明生产根据本发明的实施方式的防水传声片材的方法的流程图。
图5是示出了提供有根据本发明的实施方式的防水传声片材的电子设备的示意图。
具体实施方式
在下文中，参照附图对本发明的优选实施方式进行详细描述。在本文中，当确定了对相关领域的详细描述会弱化本发明的要点时，其描述将被省略。提供的本发明的实施方式用于向本领域技术人员更清楚地解释本发明。因此，附图中的元件的形状、尺寸等可能是放大的以便于更清楚地解释本发明。
在下文中，将详细描述根据本发明的实施方式的防水传声片材。
图1是示出了根据本发明的实施方式的防水传声片材的结构的截面图。图2是示出了将防水传声片材应用至电子设备的壳体的实例的截面图。
参照图1，根据本发明的实施方式的防水传声片材(100)包括支撑层(10)和防水层(20)。
支撑层(10)是膜状多孔层。该支撑层(10)可由无纺布或网孔层形成。与防水层(20)相比，该支撑层(10)的强度相对较高，从而易于处理防水传声片材(100)。当防水传声片材(100)连接到壳体(C)的音孔时，该支撑层(10)形成在电子设备的壳体(C)中。
防水层(20)以膜的形状形成在支撑层(10)的一侧。此外，防水层(20)可以以多孔纳米网的形状形成，其中，细纤维束交叉地成层。更具体地，防水层(20)可通过利用电纺丝将聚合物材料施加到支撑层(10)的一侧上而形成。在这种情况下，聚合物材料可包含聚偏二氟乙烯(PVDF)。此外，在防水层(20)中，可进一步对其暴露于外部的表面进行疏油化处理。
而且，聚合物材料可包括：聚酰胺；聚酰亚胺；聚酰胺酰亚胺；聚(间亚苯基异酞酰胺)；聚砜；聚醚酮；聚醚酰亚胺；芳族聚酯，诸如聚对苯二甲酸乙二醇酯、聚对苯二甲酸丙二醇酯和聚萘二甲酸乙二醇酯；聚四氟乙烯；聚磷腈，诸如聚二苯氧基磷腈和聚(双(2-(2-甲氧基乙氧基)磷腈))；聚氨酯及其共聚物；乙酸纤维素；乙酸丁酸纤维素；以及乙酸丙酸纤维素。此外，聚合物材料也可包括：聚偏氟乙烯(PVDF)、聚(偏氟乙烯-共-六氟丙烯)、全氟聚合物、聚氯乙烯或聚偏氯乙烯及其共聚物、包括聚乙二醇二烷基醚和聚乙二醇二烷基酯的聚乙二醇衍生物、聚(氧化亚甲基-低聚-氧化亚乙基)、包括聚环氧乙烷和聚环氧丙烷的聚氧化物、聚乙酸乙烯酯、聚(乙烯基吡咯烷酮-乙酸乙烯酯)、聚苯乙烯和聚苯乙烯-丙烯腈共聚物、聚丙烯腈(polyacrylontrile)、聚丙烯腈-甲基丙烯酸甲酯共聚物、聚甲基丙烯酸甲酯、聚甲基丙烯酸甲酯共聚物，以及它们的混合物。
该防水层(20)通过电纺丝而形成，并且因此能够容易地调整其厚度。具体地，由于通过电纺丝工艺能够容易地降低防水层(20)的厚度，因此防水传声片材(100)的总传声特性是优异的。
另外，防水层(20)被提供在电子设备的壳体(C)的音孔上，以使得其暴露至外部空间。也就是说，当水从外部溅射到电子设备的音孔中时，防水层(20)直接防止水渗透到电子设备中。
如上所述，本发明的防水传声片材(100)的特征在于：多孔支撑层(10)被放置在电子设备的壳体(C)中以允许容易地处理该片材(100)，并且具有多孔纤维网结构的防水层(20)被暴露于电子设备的壳体(C)的外部以改进该片材(100)的防水性能。
同时，防水传声片材(100)通过粘合层(30)可附接到壳体(C)。在这种情况下，粘合层(30)可为利用电纺丝将粘合材料施加在基板的两侧而形成的双侧粘合带。
在下文中，将详细描述根据本发明另一实施方式的防水传声片材。
图3是示出了根据本发明另一实施方式的防水传声片材的结构的截面图。
参照图3，根据本发明另一实施方式的防水传声片材(200)包括外部支撑层(40)、形成在外部支撑层(40)上的防水层(20)以及形成在防水层(20)上的支撑层(10)。在这种情况中，形成在防水层(20)的两侧上的支撑层(10)和外部支撑层(40)中的每一个均由含有无纺布的材料形成。也就是说，与图1的防水传声片材(100)不同的是，该防水传声片材(200)是三层片材。
防水层(20)与图1的防水传声片材(100)的防水层(20)是相同。也就是说，图3的防水层(20)是利用电纺丝通过施加聚合物材料而形成的多孔纳米网层。
图3的支撑层(10)和外部支撑层(40)用作图1的防水传声片材(100)的支撑层(10)。支撑层(10)和外部支撑层(40)可由不同的多孔材料制成。同时，将无纺布施加在防水层(20)的一侧上，并且将不是无纺布的多孔材料施加在防水层(20)的另一侧上，从而构成另一防水传声片材。
在下文中，将详细描述生产根据本发明的实施方式的防水传声片材的方法。
图4是说明用于生产根据本发明的实施方式的防水传声片材的方法的流程图。
参照图4，在生产根据本发明的实施方式的防水传声片材的方法中，首先，提供由膜状多孔材料制成的支撑层(S10)。在这种情况下，支撑层可由无纺布或网孔层(mesh layer)形成。
随后，制备含有聚合物材料的纺丝溶液(S20)。在这种情况下，聚合物材料可包含聚偏二氟乙烯(PVDF)。
此后，通过电纺丝将在步骤S20中制备的纺丝溶液施加到支撑层上以形成防水层(S30)。
然后，对包括支撑层和防水层的防水传声片材进行疏油化处理(S40)。
此后，防水层的一侧上可进一步形成由膜状多孔材料制成的外部支撑层，在该防水层另一侧上已经提供有支撑层。
图5是示出了提供有根据本发明的实施方式的防水传声片材的电子设备的示意图。
参照图5，示出了电子设备，即移动终端的壳体(C)的内部。在移动终端的壳体(C)中，根据本发明的实施方式的防水传声片材(100a、100b)被应用至音孔，也即，扩音器或扬声器孔。在这种情况下，用于支撑形状的支撑框架(100a’)可形成在防水传声片材(100a)的外周上。在图5中，壳体(C)中的实线表示在移动终端中形成的电路、壳体等。
虽然为了说明的目的，已经公开本发明的优选实施方式，但是本领域技术人员将会知晓的是，在未脱离所附权利要求书所公开的本发明的范围和精神的情况下，各种修改、增加和替换都是可能的。

Claims (10)

1.一种防水传声片材，所述防水传声片材附接至壳体的音孔，包括：
支撑层，所述支撑层由膜状多孔材料制成并且形成在所述壳体中；以及
防水层，所述防水层以多孔纳米网的形状形成在所述支撑层的一侧上并且暴露至所述壳体的外部，在所述多孔纳米网中，细纤维束交叉地成层。
2.根据权利要求1所述的防水传声片材，其中，所述支撑层由无纺布或网孔层形成。
3.根据权利要求1所述的防水传声片材，其中，所述防水层通过利用电纺丝将聚合物材料施加在所述支撑层上而形成。
4.根据权利要求1所述的防水传声片材，其中，所述防水层由含有聚偏二氟乙烯的材料制成。
5.根据权利要求1所述的防水传声片材，所述防水传声片材进一步包括：外部支撑层，所述外部支撑层由膜状多孔性材料制成，形成在所述防水层的一侧上并且暴露至所述壳体的外部，在所述防水层的另一侧上提供有所述支撑层。
6.一种用于生产防水传声片材的方法，包括以下步骤：
提供由膜状多孔材料制成的支撑层；
制备含有聚合物材料的纺丝溶液；以及
利用电纺丝将所述纺丝溶液施加到所述支撑层的一侧上以形成防水层，
其中，所述防水层以多孔纳米网的形状形成，在所述多孔纳米网中，细纤维束交叉地成层。
7.根据权利要求6所述的方法，其中，所述支撑层由无纺布或网孔层形成。
8.根据权利要求6所述的方法，其中，所述聚合物材料包含聚偏二氟乙烯。
9.根据权利要求6所述的方法，所述方法进一步包括以下步骤：在形成所述防水层的步骤之后，在所述防水层的一侧上形成由膜状多孔材料制成的外部支撑层，在所述防水层的另一侧上提供有所述支撑层。
10.一种电子设备，包括音孔，所述音孔提供在所述电子设备的壳体的一侧上，
其中，根据权利要求1至5中任意一项所述的防水传声片材附接在所述音孔上，并且所述支撑层形成在所述壳体中。
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KR20140075633A (ko) 2014-06-19
EP2789460A1 (en) 2014-10-15
US9514735B2 (en) 2016-12-06
JP2015510711A (ja) 2015-04-09
KR101490868B1 (ko) 2015-02-09
EP2789460A4 (en) 2016-05-18
WO2014092462A1 (ko) 2014-06-19
CN104136211B (zh) 2016-03-09

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