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The history
of using silver ion
Silver's application in sterilization B.C.
Speaking of the usage of silver, we can trace it back in a medical
book, which is written in a kind of ancient Indian, Sanskrit.
There's one record, "The army used silverware to store potable water
during their expedition." From this record, we can find the fact that
people began to make use of the special effect of silver in germ's
inhibition from early ages.
In the middle ages, it was popular using silver tableware among the
European royal families and aristocrats.
This also was one respect of using silver in sterilization. Nowadays,
we use silver to make denture, or use silver nitrate solution to make
eye drops. There're many kinds of application like this. The use of
silver in sterilization makes its
special effect on disinfecting germs still remained confusing for
a long time. In recent years, after many researches by scientists,
people get to know that it is silver ion (Ag+) which has the unique
effect on disinfection towards many kinds
of microbe (germs, funguses, viruses, pathogen, alga, etc.) As a result,
silver ion is used as an effective way in the distinfection of potable
water. The pure system on the spacecrafts and airplanes is using this
method.
According to the statistics of different function materials in 2002,
the total kinds of the sterilization products have already reached
to 70. Therefore, it becomes a question, what standard can be used
by customers to determine the quality of products? How can we compare
the effect of disinfection in numbers? Whether the special effect
remains after washing?
Sample: Cloth with silver
ion
Practice way: the measurement of Germ SEK
Kyoto Research Institute on Microbe
Experiment 1: a piece of cloth with silver
ion
| Name |
initial count of fungus
on the cloth |
18hrs-1 |
18hrs-2 |
18hrs-3 |
average |
| staphylococcus aureus |
1.3x10x5
|
<100 |
<100 |
<100 |
<100 |
| Pseudomonas aeruginosa |
1.0x10x5
|
<100 |
<100 |
<100 |
<100 |
| MRSA |
8.5x10x4
|
<100 |
<100 |
<100 |
<100 |
| Hepatitis virus |
1.2x10x5
|
<100 |
<100 |
<100 |
<100 |
| dermatophytes |
1.0x10x5
|
<100 |
<100 |
<100 |
<100 |
Experiment 2: a piece
of ordinary cloth
| Name |
initial count of fungus
on the cloth |
18hrs-1 |
18hrs-2 |
18hrs-3 |
average |
| staphylococcus aureus |
1.3x10x5 |
1.2x10x7 |
1.3x10x7 |
1.3x10x7 |
1.3x10x7 |
| Pseudomonas aeruginosa |
1.0x10x5 |
1.9x10x8 |
2.0x10x8 |
1.9x10x8 |
1.9x10x8 |
| MRSA |
8.5x10x4 |
1.6x10x7 |
1.7x10x7 |
1.4x10x7 |
1.6x10x7 |
| Hepatitis virus |
1.2x10x5 |
1.8x10x8 |
1.6x10x8 |
1.9x10x8 |
1.8x10x8 |
| dermatophytes |
1.0x10x5 |
1.6x10x5 |
1.4x10x5 |
1.6x10x5 |
1.5x10x5 |
To dermatophytes in experiment 1, it is 100000 that the bacterium
when being initial counts , drop to the level unable to examine out
after 18 hours.( left photo)
In experiment 2, to general cloth, if the initialvalue of the dermatophytes
is 100000, growth is 150000 18 hours later.
Good result is also received in the washing experiment (2,000min)
Sample: cloth with silver ion 110 quires (Japanese Unit) MX T-150D
Kyoto Research Institute on Microbe
| cloth
with silver ion |
|
products of other
companies |
| Name |
number
of fungus with washing |
| Begin |
18hrs-1 |
18hrs-2 |
18hrs-3 |
Average |
Staphylococcus
aureus
|
1.2x10x5 |
<100 |
<100 |
<100 |
<100 |
Pseudomonas
aeruginosa |
1.1x10x5 |
<100 |
<100 |
<100 |
<100 |
|
|
| Name |
number
of fungus with washing |
| Begin |
18hrs-1 |
18hrs-2 |
18hrs-3 |
Average |
Staphylococcus
aureus |
1.2x10x5 |
1.9x10x7 |
1.7x10x7 |
1.8x10x7 |
1.8x10x7 |
Pseudomonas
aeruginosa |
1.1x10x5 |
1.4x10x8 |
1.4x10x7 |
1.3x10x7 |
1.4x10x8 |
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 The silver ion
line is got through adhering to the silver ion on the high polymer
membrane. Compared with the commonly used one of now by the line that
the textile process technology produces, the largest different places
is that that line being washed repeatedly will not produce the coming
off of effective material either , which has a kind of semi-permanent
result. (Photograph of surface)
"The basic color is white just like the photo on the right," which
can make coloredly into black , red , blue , "yellow etc. and be used
in various usage according" to the needs of customer.(Color series
& Brown series)
The
example of goods
 Towel, handkerchief,
flush toilet seat, flush toilet mat
Lunch mat, dish
towel, sponge brush
Body towel,
Body brush, washing net
Socks, panty,
underclothes, shoes inner sole
Shirt, Pillowcase,
sports wear, swimming suit, working wear
Pajamas, pillowcase,
bedspread, bedcover,quilt cover, Curtain, wallpaper, wallpaper, cushion,
sofa, slippers
Clothes cover,
curtain for the car seat, hanger
Pet articles
Mask
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