Color-changing mask and color-changing warning method for use time of mask

Abstract

The invention discloses a color-changing mask and a color-changing warning method for use time of the mask. The color-changing mask comprises a main body and hanging straps, the main body comprises a skin-friendly layer, a melt-blown fabric layer and a non-woven fabric layer, a color-changing layer is printed on the non-woven fabric layer, the color-changing layer comprises a gradually-changing part which is in a colorless state when being dry and a prompting part which shows colors when being dry, the gradually-changing part is drawn by adopting moisture-sensitive printing ink which shows colors when encountering water, and the prompting part is drawn by adopting moisture-sensitive printing ink which is colorless when encountering water. When the mask is in use, a user recognizes the front face and the back face of the mask through the prompting part, the mask absorbs water vapor in the breathing process, the gradually-changing part gradually develops color from the middle of the mask body to the two sides, and the prompt color of the prompting part gradually disappears from the middle of the mask body to the two sides. According to the color-changing mask and the color-changing warning method for the use time of the mask, manufacturing is convenient, the influence of the color-changing structure on the air tightness and wearing comfort of the mask is reduced, and more visual and accurate prompt information can be given.

Description

technical field [0001] The invention relates to a mask, in particular to a color-changing mask and a color-changing warning method for the use time of the mask. Background technique [0002] In order to cope with air pollution and large-scale infectious diseases, masks are more and more needed in people's daily life. However, the filtering ability of masks will weaken over time. When worn for more than a certain period of time, masks will lose their protective function. Therefore, , need a kind of mouth mask that possesses time prompting ability. [0003] Chinese patent CN200820024394.4 discloses a kind of color-changing mask that installs color-changing filter paper and transparent cellophane on the mask, and this mask has the following disadvantages: 1. In order to ensure that the color-changing filter paper changes color reliably, the color-changing filter paper is added between the inner and outer filter layers of the mask as an interlayer, The quality requirements for ...

AI Technical Summary

Problems solved by technology

[0002] In order to cope with air pollution and large-scale infectious diseases, masks are more and more needed in people's daily life. However, the filtering ability of masks will weaken over time. When worn for more than a certain period of time, masks will lose their protective function. Therefore, , need a mask with time prompting ability

[0003] Chinese patent CN200820024394.4 discloses a kind of color-changing mask that installs color-changing filter paper and transparent cellophane on the mask, and this mask has the following disadvantages: 1. In order to ensure that the color-changing filter paper changes color reliably, the color-changing filter paper is added between the inner and outer filter layers of the mask as an interlayer, The quality requirements for color-changing filter paper are high, and the production process has been greatly changed, which increases the production cost; 2. The size of the cellophane added to the upper and lower parts of the mask is difficult to determine. When the cellophane is narrow, due to reflections, water vapor, etc. The discoloration of the mask is not easy to be observed, and because the size of the mask is fixed, when the size of the cellophane is large, it will affect the service life and air permeability of the mask. Moreover, in order to ensure that the joint between the cellophane and other parts of the mask is safe and leak-free, the process It has high requirements; 3. The color-changing filter paper is used for replacement prompts. Users cannot make accurate judgments on the use status of the mask in actual use. In order to ensure safety, they can only be replaced early, which causes waste to the mask

[0004] Therefore, the processing technology of the above-mentioned color-changing masks is complicated, the material requirements are high, the cost of mass production is relatively high, and it will also cause waste, which cannot meet the growing needs of use.

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