Original title: How are disposable medical masks made? How to disinfect? Today,
let's talk about the production process of common disposable medical masks on
the market, and the disinfection link that everyone is most concerned about at
present-how to disinfect in the factory. One, at least three floors If you cut
out the mask, you can see that there are at least three layers of non-woven
fabrics, which are required by the production regulations, at least three
layers. When we look at the inferior masks that have been exposed on the market,
only one layer of non-woven fabric is used, which is the serious jerry-building
of unscrupulous manufacturers.. 2. What is "non-woven fabric"? "Non-woven
fabrics" (also called "non-woven fabrics") are named for the process by which
they are made. They are not woven. All kinds of clothes we often wear, such as
cotton, linen and silk, are always woven into shape little by little on the
machine. Expand the full text There is also a kind of "needle-punched non-woven
fabric," which is similar to the needle-punching method we use to make felt.
There is no mention of knitting. It is to use N needles to constantly poke and
poke, so that the cotton structure is tangled and solidified together, and then
processed into such a flat layer of fabric, which can not meet the filtering
requirements. This is not a precious material either. Grandpa and grandma went
to participate in a health activity for the elderly, and most of the
"environmentally friendly bags" they got were made of "non-woven fabrics.". Then
why is there a shortage of masks after so many days? Because the market is in
short supply.. As a disposable consumable More than one billion people across
the country want to have a few people every day. All of a sudden, there is an
explosive demand. In addition, the supply of raw materials is tight. The big
manufacturing countries urgently resume work and rush to work day and night, but
they can't supply for a while.. III. Merging three layers Such three layers of
non-woven raw materials are stacked together through the production machine as
shown in the figure below. Have you noticed the small horn in the upper left
corner of this machine? There is a string of wire through the bell mouth and
keeps sending it in. Four,free
shipping disposable coverall, sew into the nose clip This depends on the
second structure of the mask: the bendable metal wire on the upper part of the
mask. When wearing, the nose clip should be pinched and fixed to the bridge of
the nose, so that the mask can be worn tightly. Otherwise, without this
structure, the air leakage of my flat nose is more serious, and the sealing is
not tight, which affects the protective effect.. Let's take a look at a
close-up,Medical Disposable
Coverall, which is to match and convey the metal wire along one side of the
non-woven fabric, and then roll the edge of the structure in the following
picture, and then sew it up, and it's done. V. Overlapping part The main part of
the mask is the layered structure shown in the picture below, which can be
pulled open to completely cover the mouth and nose, and the big face is not
afraid. The cross section of this laminated structure is so long that it needs a
machine folding link. This is the mechanical design as shown in the figure
below. There are three adjustable inclined planes, and a small bevel angle is
set so that a large piece of non-woven fabric gradually narrows from left to
right along these inclined planes to form a "folding structure.". Then there is
a tabletting link to flatten the surface of the mask. VI. Cutting link Most of
the individual cutting and hemming of masks are fully automatic without manual
processing. And different masks have slight manufacturing differences, some are
sewn edges, some are directly hot-pressed and glued, small details. What comes
out is a separate main body of the mask. It's not over yet. There are still
several steps ahead. VII. Blending and Pressing The picture below is the mask I
bought. Pay attention to the edge of the mask. There is a non-woven fabric to
reinforce and press the ear rope, so as not to tear it off. There are two large
rolls of non-woven fabrics on the left and right, waiting to reinforce the edge
of the mask. After one side is wrapped, it is immediately pressed flat and
glued. At this time, the masks that had been cut out were linked together again.
This is really the endless hatred since ancient times. So we still need a link
to cut and reinforce the edge, 3
Ply Disposable Protective Face Mask ,Medical
Full Body Coverall, and make a clean break.. VIII. Hot-pressing and fixing
the ear rope Adhesive is also needed on the edge of the mask. As shown in the
picture below, the mechanical claw on this side sends the ear rope, and the
adhesive on the other side fixes the ear rope on the mask. In this way, a flat
mask is finished. After that, of course, we have to bring out our "manual
quality inspection.". In the recent news of mask factories, we often see
employees pulling ear ropes to test or tidy up masks. Some little cuties are
worried about sterility. Don't worry, they have to be sent to disinfect and
sterilize again. 9. Open type mask Before disinfection, let's look at the
production of an open mask, which is common in anti-smog mask or with higher
protective specifications, such as the kind with a breathing valve. The feeding
in the picture below is very clear. There are five rolls of non-woven fabric on
the right, which shows that there are five layers of structure. The orange
turntable is the metal wire at the nose clip. The most important structure of
the open-type mask is shown in the picture below. A whole piece of flat fabric
is folded together through this V-shaped structure, and then cut into a single
one. Then the production of edge cutting, sewing, reinforcing and ear sealing
lines are almost the same, so I won't repeat them. 10. Disinfection and
sterilization Speaking of non-woven fabrics, have you heard the old people
complain that this kind of environmental protection bag is not strong, and it is
easy to break if you use it several times? Fragile non-woven fabrics are
generally not sterilized by high temperature, but by using ethylene oxide, a
colorless gas, to kill bacteria, mold and fungi. After finding an animated
demonstration, batches of masks were sent to the disinfection room, and then
ethylene oxide gas was introduced (the yellow color in the picture below is for
highlighting, in fact, it is colorless). After reaching a certain concentration,
the disinfection process was completed. After that, air and nitrogen should be
introduced into the disinfection room to dilute and remove ethylene oxide, and
so on, until the residual amount of ethylene oxide on the surface of the mask
reaches the standard. Like the medical supplies we wrote before, "Look at the
fear aroused by the production of needles, that's my lost childhood.." and "Mom!
I know how the factory rolls out the cotton swab! There are also medical
bandages, sutures, surgical instruments and some items that are not resistant to
high temperature sterilization, which can be sterilized by ethylene oxide.
Individual seal and dozen seal The masks we buy usually have a single sealed
package and a stack of plastic packages together. There is no difference between
the advantages and disadvantages of these two kinds, depending on the amount you
use. They are all packaged after disinfection. As long as they are manufactured
by regular manufacturers, have clear production information and meet the use
standards, they are all compliant. Is there a positive and negative mask? Some
of the most common disposable medical masks are made of the same front and back
materials, and some are divided into front and back. The front material will
look thicker, prevent some liquid splashing, and be more durable. The middle
layer is the filter element, and the veneer layer is softer. The general way to
distinguish is to see which side the ear rope is facing, and the side with the
ear rope is the side that fits the face. Reuse masks? Everyone wants to throw
away the mask after using it once, but there is no way to buy it. I am also a
serious epidemic area here. Masks are simply out of stock,Full Body Disposable Coverall, and now
every household in the community can only go out once a day to purchase daily
necessities. Now we can only try to reduce unnecessary outings and save the
number of times we use masks.. Proofreading: Cast + Jiang Xiaomu Screenshot:
Brother Yang The Gif in this article is excerpted from The MAKING video (97) "
(61)" of The Science Channel in Japan. Horizonal respirator mask making machine
by YouTube blogger Hengyao ultrasonic, YouTube blogger SAHTECH Consortium Safety
and Health Technology Center's "CSB Film California Ethylene Oxide Plant
Explosion Accident" video footage of the disinfection link modeling
demonstration, as well as the mask I bought. WE ARE MORE PROFESSIONAL IN DESIGN
back to Sohu to see more Responsible Editor:. zjyuan-group.com