CN109417660A - 透气防水片材 - Google Patents

透气防水片材 Download PDF

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CN109417660A
CN109417660A CN201780041673.3A CN201780041673A CN109417660A CN 109417660 A CN109417660 A CN 109417660A CN 201780041673 A CN201780041673 A CN 201780041673A CN 109417660 A CN109417660 A CN 109417660A
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layer
supporting layer
waterproof
sheet material
air permeable
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CN109417660B (zh
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徐寅踊
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Amogreentech Co Ltd
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Amogreentech Co Ltd
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  • Signal Processing (AREA)
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  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
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  • Child & Adolescent Psychology (AREA)
  • Textile Engineering (AREA)
  • Telephone Set Structure (AREA)
  • Laminated Bodies (AREA)

Abstract

本发明公开了一种透气防水片材，其中，设置有多个孔的支撑层被布置在透气防水层和压力传感器之间，以防止透气防水层与压力传感器碰撞。所公开的透气防水片材包括：透气防水层，该透气防水层由具有弹性的膜制成；粘合层，该粘合层的一个表面被粘附到透气防水层的一个表面上；和支撑层，该支撑层被设置有多个通风孔并且该支撑层的一个表面被粘附到粘合层的另一个表面上。

Description

透气防水片材
技术领域
本发明涉及一种透气防水片材，更具体地，涉及一种防止水被引入到安装在便携式终端中的压力传感器中并渗透空气的透气防水片材。
背景技术
近年来，越来越多地使用诸如便携式终端、数码相机和笔记本之类的移动电子设备。这种移动电子设备需要具有防水功能，因为它是便携式使用的。
然而，用于渗透空气的透气孔形成在其中安装有用于高度测量等的压力传感器(例如，高度传感器)的部分中，并且水或灰尘通过该透气孔渗透到电子设备中。
因此，在透气孔上安装用于渗透空气并阻挡水或灰尘的透气防水片材。考虑到防水性能和透气性能，应该制造这种透气防水片材。
通常，透气防水片材形成于与安装在便携式终端的麦克风、扬声器等中的防水传声片材类似的结构中。也就是说，透气防水片材由防水透气膜构成，该防水透气膜由用于透气的多孔膜形成。
然而，存在的问题是，在传统的透气防水片材中，当对该透气防水片材施加一定水平或更高水平的水压时，由水压拉伸的防水透气膜与压力传感器之间发生碰撞，从而导致压力传感器的故障。
另外，存在的问题是，传统的透气防水片材可能导致压力传感器的故障，从而向便携式终端提供错误信息。
发明内容
技术问题
本公开旨在解决上述问题，并且本公开的目的是提供一种透气防水片材，该透气防水片材使得其中形成有多个孔的支撑层介于防水透气层和压力传感器之间，从而防止防水透气层因为水压而与压力传感器碰撞。
技术方案
为了实现本公开的目的，根据本公开的实施例的透气防水片材包括防水透气层，该防水透气层由具有弹性的膜形成；支撑层，该支撑层具有形成在该支撑层中的多个透气孔并且被设置在防水透气层的一个表面上；以及，粘合层，该粘合层被置于防水透气层和支撑层之间，以粘附到防水透气层和支撑层上。
支撑层可以由多孔膜形成，并且多个透气孔可以形成在多孔膜中。此时，多个透气孔可以形成在支撑层中，并且可以形成在与粘合层不接触的区域中。
粘合层可以具有形成在其中的孔以使防水透气层和支撑层分离，并且可以沿着防水透气层和支撑层的外周设置，以在防水透气层和支撑层之间形成间隔空间。此时，粘合层可以沿着多个透气孔的外周粘附到支撑层。
有益效果
根据本公开，透气防水片材可以使其中形成有多个透气孔的支撑层介于压力传感器和防水透气层之间，从而防止通过水压拉伸的防水透气层与压力传感器接触。
此外，透气防水片材可以沿着支撑层的未粘附到粘合层的区域的周边形成具有设定尺寸或更大尺寸的多个透气孔，从而防止通过水压拉伸的防水透气层与压力传感器接触。
另外，透气防水片材可以在支撑层的未粘附到粘合层的区域中形成尺寸小于设定尺寸的多个透气孔，从而防止防水通过水压拉伸的透气层与压力传感器接触。
另外，透气防水片材可以防止防水透气层与压力传感器接触，从而防止压力传感器出现故障。
附图说明
图1至图7是用于说明根据本公开的实施例的透气防水片材的图示。
具体实施方式
在下文中，将参照附图描述本公开的最优选实施例，使得本公开所属领域的技术人员可以容易地实践本公开的技术精神。首先，在向每个附图中的部件添加附图标记时，应注意，相同的部件即使在不同的附图中示出也由相同的附图标记表示。另外，在本公开的以下描述中，当确定会使本公开的主题模糊时，将省略对已知构型或功能的详细描述。
参照图1，透气防水片材100被构造成包括防水透气层110、第一粘合层120、第二粘合层130和支撑层140。此时，参照图2，透气防水片材100可以被构造成还包括第三粘合层，该第三粘合层具有粘附到支撑层140的上表面的下表面，并且具有粘附到压力传感器模块200的上表面。
防水透气层110由预定形状的薄膜形成。此时，防水透气层110由根据形成于便携式终端中的用于将空气引入到压力传感器220、其内部联接结构等中的孔320而以各种形状(诸如圆形、椭圆形、正方形和六边形)的薄膜形成。
通常，由于应用透气防水片材100的便携式终端具有呈非常小的圆形的透气孔142，所以防水透气层110主要以圆形或椭圆形形成。
另外，根据便携式终端所需的透气性和防水性，防水透气层110可以由厚度为约30μm的薄膜形成。此时，考虑到便携式终端的厚度，防水透气层110也可以以5μm或更小和100μm或更大的厚度形成。
防水透气层110可以由通过电纺丝形成的多孔膜构成，以提供防水性能和透气性能。例如，防水透气层110可以通过对聚合物材料进行电纺丝并在网上形成聚合物材料层而形成高弹性多孔膜形状。
在此，聚合物材料可以使用芳香族聚酯，诸如，聚酰胺、聚酰亚胺、聚酰胺酰亚胺、聚(间苯二甲酰间苯二胺)、聚砜、聚醚酮、聚醚酰亚胺、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；聚磷腈，诸如聚四氟乙烯、聚二苯氧基二苯醚和聚{双[2-(2-甲氧基乙氧基)磷腈]}；含有聚氨酯和聚醚氨酯的聚氨酯共聚物；醋酸纤维素；乙酸丁酸纤维素；乙酸丙酸纤维素等。此外，聚合物材料可以使用聚偏二氟乙烯(PVDF)，聚(偏二氟乙烯-共-六氟丙烯)，全氟聚合物，聚氯乙烯或聚偏二氯乙烯及其共聚物，以及含有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，含有聚(氧亚甲基-寡聚氧乙烯)、聚环氧乙烷和聚环氧丙烷的聚氧化物，含有聚乙酸乙烯酯、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的聚丙烯腈共聚物，聚丙烯腈，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及其混合物。
通过电纺丝形成防水透气层110，使得其厚度易于调节。特别地，通过使用电纺丝工艺容易地且薄地形成防水透气层110的厚度，从而形成具有整体优异的透气性能的透气防水片材100。
防水透气层110还可以由通过除电纺丝之外的方法制造的高弹性(高拉伸收缩性能)和多孔的材料构成，以提供防水性能。例如，防水透气层110可以由非织造织物形成，该非织造织物由聚对苯二甲酸乙二醇酯(PET)、聚丙烯(PP)、聚乙烯(PE)和尼龙中的至少一种形成。
当然，防水透气层110可以由诸如聚四氟乙烯(PTFE)的多孔材料形成。
第一粘合层120由预定形状的其中具有孔的薄膜形成。此时，可以根据防水透气层110的形状由各种形状(诸如圆形、椭圆形、正方形和六边形)的薄膜形成第一粘合层120。
第一粘合层120由具有预定厚度的薄膜形成，以用于确保便携式终端的壳体300与防水透气层110之间的间隔距离。也就是说，第一粘合层120具有粘附到便携式终端的壳体300的下表面并且具有粘附到防水透气层110的下表面的上表面，以介于便携式终端的壳体300和防水透气层110之间。此时，第一粘合层120可以形成为具有约150μm的厚度，以确保便携式终端的壳体300与防水透气层110之间的间隔距离。
第二粘合层130由预定形状的其中具有孔的薄膜形成。也就是说，可以根据防水透气层110的形状由各种形状(诸如圆形、椭圆形、正方形和六边形)的薄膜形成第二粘合层130。此时，第二粘合层130具有在其中形成的透气孔。
因此，第二粘合层130沿着防水透气层110和支撑层140的外周设置，以在防水透气层110与支撑层140之间形成间隔空间(即，孔)。此时，第二粘合层130沿着形成于支撑层140中的多个透气孔142的外周粘附到支撑层140的一个表面上。
第二粘合层130由具有预定厚度的薄膜形成，以确保防水透气层110和支撑层140之间的间隔距离。也就是说，第二粘合层130具有粘附到防水透气层110的上表面的下表面和具有粘附到支撑层140的下表面上的上表面，以介于防水透气层110和支撑层140之间。此时，第二粘合层130可以形成为具有约50μm至200μm的厚度，以确保防水透气层110和支撑层140之间的间隔空间。
支撑层140以预定形状形成，以使下表面粘附到第二粘合层130的上表面。支撑层140由根据便携式终端的透气孔142、其内部联接结构等而以各种形状(例如圆形、椭圆形、正方形和六边形)的薄膜形成。
支撑层140被设置成与防水透气层110隔开一预定间距，以防止当对防水透气层110施加水压时防水透气层110在一定程度或更高程度上被拉伸。此时，支撑层140通过第二粘合层的厚度与防水透气层110形成间隔空间。
根据便携式终端所需的透气性能和防水性能，支撑层140可以形成为具有约50μm的厚度。此时，支撑层140形成为具有约10cfm或更大的透气率。
为此，支撑层140由其中形成有多个孔的多孔材料形成，以提供透气性能。也就是说，支撑层140通常由如下多孔材料形成，该多孔材料中形成有微孔以用于阻挡水和渗透空气，该多孔材料诸如为非织造织物或多孔膜。
此时，支撑层140形成有尺寸(直径)为约2μm至20μm的多个孔。此时，多个孔优选形成为具有10cfm或更大的透气率。
例如，支撑层140由如下非织造织物、通过电纺丝形成的多孔膜或其中形成有多个孔的多孔材料(诸如聚四氟乙烯(PTFE))构成，该非织造织物由诸如聚对苯二甲酸乙二醇酯(PET)、聚丙烯(PP)、聚乙烯(PE)或尼龙形成。
此时，支撑层140可以形成为具有约1μm或更大和10μm或更小的构成非织造织物的纤维的直径。在此，支撑层140通常可以由如下非织造织物材料的薄膜构成：该非织造织物材料该由直径为约5μm的纤维构成。
支撑层140也可以由不具有弹性的无孔材料(例如PET)形成。也就是说，支撑层140可以由通过电纺丝形成的无孔膜或通过除电纺丝之外的方法制造的无孔材料构成。
例如，支撑层140可以由诸如聚对苯二甲酸乙二醇酯(PET)、聚丙烯(PP)，聚乙烯(PE)或尼龙的材料构成。
另外，可以使用满足强度性质、弹性性质等的某一水平或更高水平的各种材料。
当支撑层140由无孔材料形成时，支撑层140具有形成在其中的多个透气孔142。也就是说，当支撑层140由无孔材料形成时，支撑层140不会使空气渗透到压力传感器220中，使得在该支撑层中形成被形成为具有预定尺寸(直径)的多个透气孔142。因此，空气通过多个透气孔142渗透到压力传感器220中。
此时，图3是示出当支撑层140的一个表面面对压力传感器模块200时并且当透气孔142的尺寸(即，直径)等于或大于参考值时的该支撑层140的一个表面的图示，支撑层140具有多个透气孔142，所述透气孔142沿着与第二粘合层130的内周对应的区域(即，未粘附到第二粘合层130的区域)的外周形成。
这是为了防止通过透气孔142伸展的防水透气层110与压力传感器220碰撞，并且由于压力传感器模块200具有附接到基板的中心的压力传感器220，支撑层140具有沿着与第二粘合层130的内周相对应的区域的外周形成的多个透气孔142。
同时，图4是示出了当支撑层140的一个表面面对压力传感器模块200时并且当透气孔142的尺寸(即，直径)小于参考值时该支撑层140的一个表面的图示，支撑层140具有在与第二粘合层130的内周相对应的区域中形成的多个透气孔142。
此时，当透气孔142的尺寸小于参考值时，即使在防水透气层110通过水压拉伸时，也可以防止防水透气层110与压力传感器220碰撞。
通常，当透过透气防水片材100的空气的量增加时，压力传感器的压力传感性能得到改善，因此需要增加在支撑层中形成的透气孔142的尺寸。
然而，如图5所示，当在透气孔142的尺寸形成为包括与第二粘合层130的内周相对应的整个区域的情况下对透气防水片材100施加水压时，通过水压而拉伸的防水透气层110与压力传感器220接触，从而导致压力传感器220发生故障。
相反，如图6所示，当沿着与第二粘合层130的内周相对应的区域的外周在支撑层140中形成具有参考值或更大尺寸的多个透气孔142时，通过水压拉伸的防水透气层110靠近压力传感器模块200，但是不与设置在模块中心的压力传感器220接触，因此不会导致压力传感器220发生故障。
另外，如图7所示，当在支撑层140中在与第二粘合层130的内周相对应的区域中形成尺寸小于参考值的多个透气孔142时，通过水压而拉伸的防水透气层110因为狭窄的透气孔142而不靠近压力传感器模块200，因此不会导致压力传感器220发生故障。
在此，尽管在上文的描述中已经说明了透气孔142仅在支撑层140由无孔材料形成时形成，但是不限于此，并且还可以应用于由多孔材料形成的支撑层140，以用于确保透气性能。
透气防水片材可以使其中形成有多个透气孔的支撑层介于压力传感器和防水透气层之间，从而防止通过水压拉伸的防水透气层与压力传感器接触。
另外，透气防水片材可以沿着支撑层的未粘附到粘合层的区域的周边形成具有设定尺寸或更大尺寸的多个透气孔，从而防止通过水压拉伸的防水透气层与压力传感器接触。
另外，透气防水片材可以在支撑层的未粘附到粘合层的区域中形成尺寸小于设定尺寸的多个透气孔，从而防止由水压拉伸的防水透气层与压力传感器接触。
另外，透气防水片材可以防止防水透气层与压力传感器接触，从而防止压力传感器发生故障。
如上文所述，尽管已经描述了根据本公开的优选实施例，但是应该理解，这些实施例可以被修改为各种形式，并且本领域技术人员可以对其实施各种修改和改变，而不脱离本公开的范围。

Claims (6)

1.一种透气防水片材，包括：
防水透气层，所述防水透气层由具有弹性的膜形成；
支撑层，所述支撑层具有在所述支撑层中形成的多个透气孔并且被设置在所述防水透气层的一个表面上；和
粘合层，所述粘合层介于所述防水透气层和所述支撑层之间，以粘附到所述防水透气层和所述支撑层上。
2.根据权利要求1的透气防水片材，其中，
所述支撑层由多孔膜形成，并且所述多个透气孔形成于所述多孔膜中。
3.根据权利要求1的透气防水片材，其中，
所述多个透气孔形成于所述支撑层中，并形成于未与所述粘合层粘附在一起的区域中。
4.根据权利要求1的透气防水片材，其中，
所述粘合层具有形成于所述粘合层中的孔，以使所述防水透气层和所述支撑层分离。
5.根据权利要求1的透气防水片，其中，
所述粘合层沿着所述防水透气层和所述支撑层的外周设置，以在所述防水透气层和所述支撑层之间形成间隔空间。
6.根据权利要求1的透气防水片材，其中，
所述粘合层沿着所述多个透气孔的外周粘附到所述支撑层上。
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US20210255051A1 (en) 2021-08-19
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