We asked many questions about masks, such as the area of masks, the types of masks, the making of masks and so on. This is my question about the mask. Let's go and visit. We came to Zhejiang Hengbeikang Medical Equipment Co., Ltd., which specializes in producing disposable masks, including N95 masks, medical surgical masks, disposable medical masks and civil protective masks. Also exported abroad. The staff patiently explained various masks to us, and we listened carefully and learned a lot about masks. Then they showed us around their production workshop. The production process basically does not need manpower, and it is fully automatic and the machine runs, so the output is very high. After the visit, they also gave us a lot of masks, which were really hospitable. Let's review it! Mask 1 consists of five parts. The outermost layer is water-repellent nonwoven fabric, which mainly absorbs dust odor and harmful particles and blocks water droplets. The innermost layer is skin-friendly non-woven fabric, which improves skin comfort and absorbs water better. The middle layer is the core material, that is, meltblown filter cloth, which is mainly made of polypropylene. The fiber diameter can reach 1 ~ 5 microns, and particles smaller than or equal to 0.3 microns can be effectively filtered. We did a test on the spot, and found that Hengbeikang's ear strap fully meets the standard, and finally the bridge of nose, all of which are plastic, single-core and double-core, with the highest cost. The finished mask is175mm long and 95mm wide.

The area is 166.25 square centimeters. The mask weighs about 3.098g, the ex-factory price is 0.3 yuan, and the cost price is 0.22 yuan. This price surprised us, because the price in the market has increased by nearly 10 times, especially during the epidemic.

The mask production equipment consists of a discharging mechanism and a folding mechanism.

Ear wire discharge mechanism, flanging mechanism, ultrasonic welding mechanism

Mask cutting mechanism and mask distributing mechanism

Ultrasonic welding ear wire mechanism

Mask forming and stacking mechanism, control system, etc.

Such a complete set of equipment

The current price is about 65438+ ten thousand.

However, during the epidemic, more than 400,000 masks produced were sent to the disinfection room.

Introduce ethylene oxide gas for disinfection.

Finally, we must analyze the toxins.

Until the residual amount of ethylene oxide on the surface of the mask reaches the standard.

The masks produced are sent to the disinfection room.

Introduce ethylene oxide gas for disinfection.

Finally, we must analyze the toxins.

Until the residual amount of ethylene oxide on the surface of the mask reaches the standard.

And put it into such a large-scale production workshop

Need to invest 3-4 million.

However, the cost was recovered through the production and sales of 10 days before.

We have to feel that demand exceeds supply.

Influence on market price

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Let's answer the question

This time, Mr. Jin, the math teacher, gave us 20 questions. Watch what I do! I thought over each question carefully and then began to answer it. After the teacher handed out the answer, I checked it and found a wrong question. The title is shown in the picture. I think it is too complicated. I don't think I can buy five every time I go out, so there are three possibilities.

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Learning summary

Through these activities, I learned a lot about masks and consolidated my math knowledge. This is really a meaningful activity, which not only enriches my summer vacation life, but also can learn something that I can't learn in textbooks. I am also quite satisfied with my performance in this research.