阅读说明：本技术 一种口罩用鼻梁条及其制备方法 (Nose bridge strip for mask and preparation method thereof ) 是由 程亚芳 钟素娟 裴夤崟 潘建军 黄俊兰 侯江涛 李永 周许升 于 2020-05-18 设计创作，主要内容包括：本发明提供了一种口罩用鼻梁条及其制备方法,涉及口罩技术领域。该口罩用鼻梁条包括鼻梁条本体和杀菌膜；鼻梁条本体由金属材料制成,杀菌膜包覆在鼻梁条本体的表面。口罩用鼻梁条的制备方法采用热浸镀法使熔融的金属液在鼻梁条本体的表面形成杀菌膜。本发明的口罩用鼻梁条及其制备方法,在鼻梁条本体的表面设置杀菌膜,该杀菌膜能够杀灭黏附在鼻梁条本体表面的细菌和病毒,防止因人手触摸口罩而对人体健康造成危害。(The invention provides a nose bridge strip for a mask and a preparation method thereof, and relates to the technical field of masks. The nose bridge strip for the mask comprises a nose bridge strip body and a sterilizing membrane; the nose bridge strip body is made of metal materials, and the sterilizing membrane is coated on the surface of the nose bridge strip body. The preparation method of the nose bridge strip for the mask adopts a hot dipping method to enable molten metal to form a sterilizing film on the surface of a nose bridge strip body. According to the nose bridge strip for the mask and the preparation method of the nose bridge strip, the sterilization film is arranged on the surface of the nose bridge strip body, and can kill bacteria and viruses adhered to the surface of the nose bridge strip body, so that harm to human health caused by touching the mask by hands is prevented.)

1. A nose bridge strip for a mask is characterized by comprising a nose bridge strip body (100) and a sterilizing membrane (200); the nose bridge strip body (100) is made of a metal material, and the sterilization film (200) is coated on the surface of the nose bridge strip body (100).

2. The nose bridge strip for the mask according to claim 1, wherein the bactericidal membrane (200) is formed on the surface of the nose bridge strip body (100) by hot dip coating with a metal liquid, and the metal liquid comprises the following components in percentage by mass: ag 2-3%, Cu 0.3-0.8%, and Sn in balance.

3. A method for manufacturing a nose bridge for a mask according to claim 1, wherein the sterilizing film (200) is formed on the surface of the nose bridge body (100) by a hot dip coating method using a molten metal.

4. The method for preparing a nose bridge strip for a mask according to claim 2, comprising the steps of:

step one, melting metal to prepare molten metal;

and secondly, enabling the nose bridge strip body (100) to penetrate through the molten metal.

5. The method according to claim 4, wherein in the first step, the molten metal has a melting temperature of 230 to 300 ℃.

6. The method for preparing the nose bridge piece body (100) according to the claim 4, wherein before the step two, a soldering flux is dipped on the surface of the nose bridge piece body (100).

7. The preparation method of claim 6, wherein the soldering flux comprises 82% by mass of triethanolamine, 10% by mass of zinc fluoroborate and 8% by mass of amine fluoroborate.

8. The manufacturing method according to claim 6, characterized in that before the surface of the nose bridge strip body (100) is dipped with the flux, the nose bridge strip body (100) is subjected to alkali washing.

9. The method of manufacturing according to claim 8, wherein the solution that bases the nose bridge body (100) is a 5% strength aqueous NaOH solution at 60 ℃.

10. The method for preparing according to claim 4, wherein in the second step, the speed of the nose bridge strip body (100) passing through the molten metal is 0.1m/s-0.3 m/s.

Technical Field

The invention relates to the technical field of masks, in particular to a nose bridge strip for a mask and a preparation method of the nose bridge strip.

Background

The nose bridge strip is one of the main parts of the mask protection, and the main function of the nose bridge strip is to improve the protection effect of the mask by fitting with the outer contour of the nose and avoid the harm to the health of people caused by the inhalation of bacteria, viruses and air pollutants into the nasal cavity from the two sides of the nose bridge.

At present, the nose bridge strip is mainly made of aluminum, low-carbon steel, polypropylene (PP for short), polyethylene (PE for short) and the like. The nose bridge strip can generate plastic deformation and has the characteristics of smooth and flat outside, capability of being fused with non-woven fabric materials and the like. FIG. 1 is a cross-sectional view of a nose bridge strip for a first mask of the prior art; FIG. 2 is a schematic cross-sectional view of a second prior art nasal bridge for a mask. As shown in fig. 1 and 2, in the nose bridge strip for masks in the prior art, the nose bridge strip body 100 is directly exposed outside, and the masks are wrapped in the non-woven fabrics of the masks by the nose bridge strip.

However, the existing nose bridge strip has no antibacterial effect. When the mask is worn, hands touch the nose bridge strip continuously to shape the nose bridge strip, bacteria are easy to adhere to the surface of the nose bridge strip, the mask is polluted, and therefore safety hidden dangers are brought to a human body.

Disclosure of Invention

The invention aims to provide a nose bridge strip for a mask and a preparation method thereof, which are helpful for killing bacteria adhered to the surface of the nose bridge strip.

The invention is realized by the following steps:

a nose bridge strip for a mask comprises a nose bridge strip body and a sterilizing membrane; the nose bridge strip body is made of a metal material, and the sterilization film is coated on the surface of the nose bridge strip body.

When in use, the nose bridge strip is wrapped in the non-woven fabric of the mask and still exposed outside actually. When the mask is worn, a wearer needs to pinch the nose bridge strip to realize close fit with the outline of the nose bridge. And in the gauze mask wearing process, the wearer needs to touch the nose bridge strip constantly to realize the shaping. In the process, bacteria are easily adhered to the surface of the nose bridge strip to cause pollution. Because the outer surface of the nose bridge strip for the mask is coated with the sterilizing film, the probability of pollution of the mask can be greatly reduced.

Further, the bactericidal film is generated on the surface of the nose bridge strip body by molten metal through a hot dip coating method, and the molten metal comprises the following components in percentage by mass: ag 2-3%, Cu 0.3-0.8%, and Sn in balance. The technical effects are as follows: the metal ions such as Ag, Cu, Zn, Sn and the like have stronger bactericidal capability. The metal ions are rapidly combined with thiol (-SH) groups on proteases in bacterial bodies by strongly attracting them, so that the proteases lose activity, thereby causing bacterial death. And Ag ions have lasting bactericidal ability, and when bacteria are killed by the Ag ions, the Ag ions are dissociated from the bacterial corpses and then contacted with other bacteria, and the process is repeated repeatedly, which is the reason that the silver has lasting bactericidal ability. In the use process, because the mask leaks outside and continuously contacts sweat of hands of people, the nose bridge strip for the mask is in a high-humidity environment, and metal ions in the bactericidal membrane coating are promoted to migrate. The metal ion migration is limited to a few metals, such as silver, copper, lead, tin, etc., with the highest mobility of silver ions. Silver ion has a high mobility because it cannot form a stable and passivated oxide film. The low free energy of redox of silver and silver ions promotes anodic dissolution and cathodic reduction, resulting in a high degree of mobility. Therefore, the metal migration causes the metal oxide in the bactericidal film to be eluted with minute amounts of Ag ions and Cu ions, thereby exerting a bactericidal effect.

The coating has the advantages that the content of Sn is high, the content of Ag and Cu is low, Ag and Cu with good bactericidal performance can be attached to Sn to form a coating with a bactericidal effect, the bactericidal durability of the coating is good, and the coating does not harm human bodies.

A method for preparing a nose bridge strip for a mask comprises the step of forming a sterilizing film on the surface of a nose bridge strip body by molten metal liquid through a hot dip coating method.

The other preparation method of the nose bridge strip for the mask comprises the following steps: step one, melting metal to prepare molten metal; and step two, enabling the nose bridge strip body to penetrate through the molten metal.

Further, in the first step, the melting temperature of the molten metal is 230 ℃ to 300 ℃.

Further, before the second step, the surface of the nose bridge piece body is soaked with soldering flux.

Further, the soldering flux comprises 82% of triethanolamine, 10% of zinc fluoborate and 8% of amine fluoborate in percentage by mass.

Further, before the surface of the nose bridge strip body is soaked with the soldering flux, alkali washing is carried out on the nose bridge strip body.

Further, the solution for alkali washing the nose bridge strip body was a 5% concentration NaOH aqueous solution at 60 ℃.

Further, in the second step, the speed of the nose bridge strip body passing through the molten metal is 0.1-0.3 m/s.

The invention has the beneficial effects that:

according to the nose bridge strip for the mask and the preparation method of the nose bridge strip, the sterilization film is arranged on the surface of the nose bridge strip body, and can kill bacteria adhered to the surface of the nose bridge strip body, so that harm to human health caused by touching the mask by hands is prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a cross-sectional view of a nose bridge strip for a first mask of the prior art;

FIG. 2 is a schematic cross-sectional view of a second prior art nasal bridge for a mask;

fig. 3 is a schematic cross-sectional view of a nose bridge for a mask according to a first embodiment of the present invention;

fig. 4 is a process flow chart of a method for manufacturing a nose bridge strip for a mask according to a second embodiment to a sixth embodiment of the present invention.

In the figure: 100-nose bridge strip body; 200-a bactericidal membrane; 300-hot dipping tank; 400-flux groove; 500-alkaline washing tank; 600-precision rolling mill; 700-faucet shower.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The first embodiment:

fig. 3 is a schematic cross-sectional view of a nose bridge for a mask according to a first embodiment of the present invention. Referring to fig. 3, the present embodiment provides a nose bridge strip for a mask, which includes a nose bridge strip body 100 and a sterilizing membrane 200; the nose bridge strip body 100 is made of a metal material, and the sterilizing membrane 200 is coated on the surface of the nose bridge strip body 100.

Further, as shown in fig. 3, the bactericidal film 200 is formed on the surface of the nose bridge strip body 100 by hot dip coating with molten metal, and the molten metal comprises the following components by mass percent: ag 2-3%, Cu 0.3-0.8%, and Sn in balance.

The nose bridge strip body 100 is a flat strip-shaped structure or a long strip-shaped filiform structure.

The bactericidal film 200 has a high Sn content and a low Ag and Cu content, and can attach Ag and Cu with good bactericidal performance to Sn to form a coating with bactericidal effect, and the coating has good bactericidal durability and no harm to human bodies.

When in use, the nose bridge strip is wrapped in the non-woven fabric of the mask and still exposed outside actually. When the mask is worn, a wearer needs to pinch the nose bridge strip to realize close fit with the outline of the nose bridge. And in the gauze mask wearing process, the wearer needs to touch the nose bridge strip constantly to realize the shaping. In the process, bacteria are easily adhered to the surface of the nose bridge strip to cause pollution. Because the outer surface of the nose bridge strip for the mask is coated with the sterilizing film 200, the probability of pollution of the mask can be greatly reduced.

The sterilization principle is as follows:

the metal ions such as Ag, Cu, Zn, Sn and the like have stronger bactericidal capability. The metal ions are rapidly combined with thiol (-SH) groups on proteases in bacterial bodies by strongly attracting them, so that the proteases lose activity, thereby causing bacterial death. And Ag ions have lasting bactericidal ability, and when bacteria are killed by the Ag ions, the Ag ions are dissociated from the bacterial corpses and then contacted with other bacteria, and the process is repeated repeatedly, which is the reason that the silver has lasting bactericidal ability. In the using process, because the mask leaks outside and continuously contacts sweat of hands of people, the nose bridge strip for the mask is in a high-humidity environment, and metal ions in the coating of the sterilizing film 200 are promoted to migrate. The metal ion migration is limited to a few metals, such as silver, copper, lead, tin, etc., with the highest mobility of silver ions. Silver ion has a high mobility because it cannot form a stable and passivated oxide film. The low free energy of redox of silver and silver ions promotes anodic dissolution and cathodic reduction, resulting in a high degree of mobility. Therefore, the metal migration causes the metal oxide in the sterilization film 200 to be eluted with a minute amount of Ag ions and Cu ions, thereby achieving the sterilization effect.

Second embodiment:

fig. 4 is a process flow chart of a method for manufacturing a nose bridge strip for a mask according to a second embodiment to a sixth embodiment of the present invention. Referring to fig. 4, the present embodiment provides a method for preparing a nose bridge for a mask, in which a hot dip plating method is adopted to form the bactericidal film 200 on the surface of the nose bridge body 100 by using a molten metal, including the following steps:

step one, melting metal to prepare the molten metal. Comprises adding Ag, Cu, Sn and other raw materials into a hot-dip plating tank 300, and heating to melt into hot-dip plating sterilization metal liquid for later use;

and step two, enabling the nose bridge strip body 100 to penetrate through the molten metal.

The nose bridge strip body 100 is formed by rolling a pure aluminum wire with a suitable wire diameter once by a precision rolling mill 600, and has a certain width and thickness.

Wherein, in the first step, the melting temperature of the molten metal is 230-300 ℃.

Wherein, before the second step, the surface of the nose bridge piece body 100 is dipped with the soldering flux in the soldering flux groove 400. The soldering flux comprises 82% of triethanolamine, 10% of zinc fluoborate and 8% of amine fluoborate in percentage by mass.

Wherein, before the surface of the nose bridge strip body 100 is dipped with the soldering flux, the nose bridge strip body 100 is subjected to alkali cleaning in an alkali cleaning groove 500. The solution for alkali washing the nose bridge strip body 100 is a 5% NaOH aqueous solution at 60 ℃. Also, after the alkali washing, the nose bridge bar body 100 is cleaned using the faucet shower 700.

In the second step and in the process of dipping the soldering flux on the surface of the nose bridge strip body 100, the speed of the nose bridge strip body 100 passing through the molten metal and the soldering flux is 0.1m/s-0.3 m/s.

Specifically, the molten metal comprises the following components in percentage by mass: 2% of Ag, 0.3% of Cu and 97.7% of Sn.

The third embodiment:

fig. 4 is a process flow chart of a method for manufacturing a nose bridge strip for a mask according to a second embodiment to a sixth embodiment of the present invention. Referring to fig. 4, the present embodiment provides a method for manufacturing a nose bridge strip for a mask, which is substantially the same as the method for manufacturing the second embodiment, and the difference between the two embodiments is that in the manufacturing method of the present embodiment, the molten metal comprises the following components by mass percent: 2.2% of Ag, 0.4% of Cu and 97.4% of Sn.

The fourth embodiment:

fig. 4 is a process flow chart of a method for manufacturing a nose bridge strip for a mask according to a second embodiment to a sixth embodiment of the present invention. Referring to fig. 4, the present embodiment provides a method for manufacturing a nose bridge strip for a mask, which is substantially the same as the second embodiment or the third embodiment, and the difference between the two embodiments is that in the manufacturing method of the present embodiment, the molten metal comprises the following components by mass percent: 2.5% of Ag, 0.5% of Cu and 97% of Sn.

Fifth embodiment:

fig. 4 is a process flow chart of a method for manufacturing a nose bridge strip for a mask according to a second embodiment to a sixth embodiment of the present invention. Referring to fig. 4, the present embodiment provides a method for manufacturing a nose bridge strip for a mask, which is substantially the same as the method for manufacturing the second, third or fourth embodiment, and the difference between the two embodiments is that in the manufacturing method of the present embodiment, the molten metal comprises the following components by mass percent: 2.8% of Ag, 0.6% of Cu and 96.6% of Sn.

Sixth embodiment:

fig. 4 is a process flow chart of a method for manufacturing a nose bridge strip for a mask according to a second embodiment to a sixth embodiment of the present invention. Referring to fig. 4, the present embodiment provides a method for manufacturing a nose bridge strip for a mask, which is substantially the same as the second, third, fourth or fifth embodiment, and the difference between the two embodiments is that in the manufacturing method of the present embodiment, the molten metal comprises the following components by mass percent: 3% of Ag, 0.8% of Cu and 96.2% of Sn.

In order to compare the sterilizing abilities of the nose bridge strips for masks manufactured by the manufacturing methods of the second to sixth embodiments of the present invention with the existing nose bridge strips, the nose bridge strips were cut into 5mm × 5mm alloy pieces, and the cut alloy pieces were subjected to antibacterial property testing.

The antibacterial performance was measured according to JIS Z2801: 2010, truv Shanghai is entrusted to carry out antibacterial performance detection, each sample is parallelly detected for three times, and the logarithmic value of each sample is taken according to the standard. When the antibacterial value is more than or equal to 2, the antibacterial rate is more than or equal to 99 percent. The results are as follows:

result of antimicrobial property test

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.