Silver metal anti-virus film 

Technology briefing

In ancient legends, silver and some metals are originally a powerful weapon against evil spirits. For example, vampires are afraid of silver needles, and silver bullets (bullets made of silver) can kill invulnerable monsters, etc. It has been known in science that, in fact, substances in different volume structures have different physical and chemical properties, as well as interactions with the environment. Metals can kill bacteria and microorganisms. Therefore, if the metals are in the state of nano-sized particles, the bactericidal effect will be more prominent because the equivalent surface area in contact with the environment becomes larger.

The bactericidal principle of metals is different from that of antibiotics. Antibiotics do not actively sterilize bacteria, but passively inhibit the proliferation of bacteria. Metal particles, on the other hand, actively destroy the cell walls of bacteria and kill them. In addition, bacteria will evolve to escape the antibacterial mechanism of antibiotics, but bacteria cannot evolve a mechanism to resist the damage of their cell walls by metal ions. The mechanism is that the positively charged nanometer metal ions adsorb each other after contacting the negatively charged single-cell microorganisms, and the cell wall is destroyed, causing the protein of the microorganisms to mutate and unable to reproduce, achieving the function of sterilization. According to current scientific statistics, a single type of antibiotic can only inhibit several types of bacteria, but nano-scale metals can kill hundreds of types of bacteria.

The antibacterial effect of nano-silver and nano-metals is also widely used in various industries, such as household, medical treatment, personal protection, cosmetics, transportation, food, etc. In the application, most of the nano-scale metal particles are mixed in the carrier for convenient use, such as paint, chemical raw materials, clothing, filter screen, packaging materials, etc.

Efun uses the roll-to-roll vacuum sputtering process to plate nano-silver and metal materials on PC or PET film substrates, to provides customers with nano-metal film materials for use in various fields. The nano-metal products produced by roll-to-roll sputtering have high uniformity, good optical quality and good adhesion, which are suitable for making various eye and face antibacterial protective products.

Specs.

SGS verifaiction of antibacterial testing :

 〔JIS Z2801 Criterion : Antibacterial value (R) ≧ 2，Antibacterial rate > 99%  〕

Escherichia coli (ATCC 8739)

Antibacterial value( R ) > 5.82

Antibacterial rate~ 99.99%

Salmonella enterica subsp.  Enteric (ATCC 13311)

Antibacterial value ( R ) > 5.89

Antibacterial rate ~99.99%

Llebsiella pneumoniae  (ATCC 4352)

Antibacterial value ( R ) > 5.21

Antibacterial rate~99.99%

Streptococcus pneumoniae (ATCC 33400)

Antibacterial value ( R ) > 4.93

Antibacterial rate~99.99%