CN111685410A - 新颖口罩结构 - Google Patents

新颖口罩结构 Download PDF

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CN111685410A
CN111685410A CN202010162594.1A CN202010162594A CN111685410A CN 111685410 A CN111685410 A CN 111685410A CN 202010162594 A CN202010162594 A CN 202010162594A CN 111685410 A CN111685410 A CN 111685410A
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layer
mask
fiber
membrane
fiber structure
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胡衍荣
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Ho T'ang Ch'un Co ltd
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Ho T'ang Ch'un Co ltd
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    • A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/113—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a vertical fold or weld
    • A—HUMAN NECESSITIES
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Abstract

本发明公开了一种低压差高过滤效率的新颖口罩结构，其口罩的本体设有一薄膜过滤层(filtration layer)，该薄膜过滤层的纤维直径介于50至800纳米之间，在该薄膜过滤层的前、后面的至少一面设有一纤维结构层(fibrous layer)，该纤维结构层的纤维直径介于0.5至8.0微米之间；当口罩配戴者配戴本发明时，由于该薄膜过滤层的前、后方至少一处设有该纤维结构层，此纤维结构层可降低气流通过该薄膜过滤层的压力差(pressure drop)，避免口罩配戴者感觉呼吸困难，具有高过滤效率低压差以及呼吸的舒适度。

Description

新颖口罩结构
技术领域
本发明涉及一种口罩结构，尤其涉及一种降低气流通过口罩时压力差异的新颖口罩结构。
背景技术
现有的口罩为了提高过滤效率的需求，会使用孔隙较小的过滤层作为口罩过滤的材料，当配戴者吸气时可通过小孔隙的过滤层拦截气流中的微粒子，达到较佳的口罩过滤效果。
上述高过滤效率的口罩虽然能达到较佳的过滤效果，但由于过滤气流的孔隙小，因此配戴者无论是呼气或者是吸气的气流都会受到阻碍，例如当口罩以单片的PTFE(聚四氟乙烯)薄膜作为过滤构造时，配戴口罩者吸气及呼气的压力差分别是35.7mmH2O甚至于64.2mmH2O，如此大的压力差会使配戴口罩者感觉到呼吸困难，降低使用口罩的舒适度。
发明内容
由于现有口罩使用时呼吸的压力差较大，造成配戴者呼吸困难的问题。为此，本发明在薄膜过滤层的前、后面的至少一面设有纤维结构层，可过滤并减缓气流速度，降低呼吸时通过口罩的气流的压力差，提升配戴口罩的舒适感。
为达到上述目的，本发明提供一种新颖口罩结构，包括一口罩本体以及两分别形成在该口罩本体左、右两侧的耳挂构造，其中：
该口罩本体设有一薄膜过滤层，该薄膜过滤层的纤维直径介于50至800纳米之间，在该薄膜过滤层的前、后面至少一面设有一纤维结构层，该纤维结构层的纤维直径介于0.5至8.0微米之间。
进一步，本发明所述的纤维结构层是聚丙烯熔喷无纺布。
较佳的，本发明所述各纤维结构层是聚丙烯熔喷无纺布、聚对苯二甲酸丁二酯熔喷无纺布、超细纤维无纺布，或聚酰胺熔喷无纺布。
较佳的，本发明所述的薄膜过滤层是聚四氟乙烯薄膜、聚偏二氯乙烯薄膜、聚乙烯薄膜、聚丙烯薄膜，或静电纺丝薄膜。
当本较佳实施例使用时，口罩配戴者配戴本发明使得该口罩本体罩盖在口罩配戴者的口鼻前方，这时口罩配戴者吸气与呼气的气流都会穿过该口罩本体，由该薄膜过滤层以及该纤维结构层过滤空气中的微粒子。
与现有技术相比，本发明的有益效果为：
当配戴本发明者吸气或者呼气的气流通过该薄膜过滤层以及该纤维结构层时，气流夹带的微粒子会受该纤维结构层过滤并滞留其间，且气流通过各纤维结构层时能减缓速度，如此能降低气流通过该薄膜过滤层时的压力差，避免口罩配戴者感觉呼气困难，提升了口罩配戴者配戴本发明时呼吸的舒适度。
附图说明
图1是本发明较佳实施例的立体图；
图2是本发明较佳实施例的分解示意图；
图3是本发明较佳实施例的实施示意图。
符号说明：
10口罩本体
11薄膜过滤层
12纤维结构层
20耳挂构造
具体实施方式
为能详细了解本发明的技术特征及实用功效，并可依照说明书的内容来实施，进一步以如图式所示的较佳实施例，详细说明如下。
请参看如图1、图2所示的本发明较佳实施例，本发明提供一种新颖口罩结构，包括一口罩本体10以及两分别形成在该口罩本体10左、右两侧的耳挂构造20，其中：
该口罩本体10设有一薄膜过滤层11(filtration layer)，该薄膜过滤层11可选用聚四氟乙烯薄膜、聚偏二氯乙烯薄膜、聚乙烯薄膜、聚丙烯薄膜，或静电纺丝薄膜，如本较佳实施例的该薄膜过滤层11是选用聚四氟乙烯薄膜，且该聚四氟乙烯薄膜的纤维直径介于50至800纳米之间，在该薄膜过滤层11的前面以及后面分别设有一纤维结构层12(fibrouslayer)，各纤维结构层12可选用聚丙烯熔喷无纺布、聚对苯二甲酸丁二酯熔喷无纺布、超细纤维无纺布，或聚酰胺熔喷无纺布，如本较佳实施例所述各纤维结构层12是选用15gsm(公克/平方米)的聚丙烯熔喷无纺布，且各聚丙烯熔喷无纺布的纤维直径介于0.5至3.0微米之间，各纤维结构层12的纤维直径大于该薄膜过滤层11的直径。
两耳挂构造20是分别由该口罩本体10左、右两侧的边缘一体向外延伸形成的环状片体。
当本发明使用时，口罩配戴者是将本发明的两耳挂构造20勾挂在耳朵，使得该口罩本体10罩盖在口罩配戴者的口鼻前方，这时口罩配戴者吸气与呼气的气流都会穿过该口罩本体10，如图3所示，当吸气或者呼气的气流通过该薄膜过滤层11以及两纤维结构层12时，由于气流夹带的微粒子会受各纤维结构层12过滤并滞留其间，加上各纤维结构层12的纤维直径大于该薄膜过滤层，吸气或呼气的气流通过各纤维结构层12时能减缓速度，降低气流通过该薄膜过滤层11时的压力差(pressure drop)，避免口罩配戴者感觉呼气困难，实际量测本发明的口罩本体10的构造，在口罩配戴者吸气与呼气时的压力差分别从35.7mmH2O降为25.1mmH2O，以及由64.2mmH2O降为39.2mmH2O(这时本发明的过滤效率分别为98.67％与99.78％，其测试依据CNS1 4755Z2125标准测试，测试粒子为0.075微米的NaCl，测试流率为85.1Liter/min)，由于压力差的降低，提升了口罩配戴者配戴本发明时呼吸的舒适度。
本发明除上述较佳实施例，是在该薄膜过滤层11的前面以及后面分别设有所述的纤维结构层12以外，也可仅在该薄膜过滤层11的前面或仅在该薄膜过滤层11的后面设有所述的纤维结构层12，这时本发明的配戴者吸气与呼气的压力差分别为20.9mmH2O与54mmH2O(这时本发明的过滤效率分别为96.5％与99.92％)，同样达到了降低呼吸时的压力差，提升口罩配戴者配戴本发明呼吸时的舒适度的效果。本发明各纤维结构层12除上述较佳实施例，是选用纤维直径介于0.5至3.0微米之间的纤维结构以外，各纤维结构层12的纤维直径也可改为介于0.5至8.0微米之间的尺寸，这时各纤维结构层12的纤维直径仍大于该薄膜过滤层11的直径，可搭配发挥降低呼吸时压力差的功效。
以上所述仅为本发明的较佳实施例而已，并非用以限定本发明主张的权利范围，凡其它未脱离本发明所揭示的精神所完成的等效改变或修饰，均应包括在本发明的申请专利范围内。

Claims (4)

1.一种新颖口罩结构，其特征在于，包括一口罩本体以及两分别形成在该口罩本体左、右两侧的耳挂构造，其中：
该口罩本体设有一薄膜过滤层，该薄膜过滤层的纤维直径介于50至800纳米之间，在该薄膜过滤层的前、后面至少一面设有一纤维结构层，该纤维结构层的纤维直径介于0.5至8.0微米之间。
2.如权利要求1所述的新颖口罩结构，其特征在于，所述的纤维结构层是聚丙烯熔喷无纺布。
3.如权利要求1所述的新颖口罩结构，其特征在于，所述各纤维结构层是聚丙烯熔喷无纺布、聚对苯二甲酸丁二酯熔喷无纺布、超细纤维无纺布，或聚酰胺熔喷无纺布。
4.如权利要求1至3中任一项所述的新颖口罩结构，其特征在于，所述的薄膜过滤层是聚四氟乙烯薄膜、聚偏二氯乙烯薄膜、聚乙烯薄膜、聚丙烯薄膜，或静电纺丝薄膜。
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