Technology

SILVER SEAL™ Is Different

SILVER SEAL™ Protection provides the highest level of inorganic, antimicrobial protection available. Recognized by scientists and worldwide healthcare organizations, SILVER SEAL™ protection gives you the confidence that your environment is clean, safe and secure.

In the past, traditional antibacterial additives were manufactured from organic material. But recently, there have been reports of illness caused by organic antibacterial materials. Many organic antibacterial materials can be easily transferred from the product to the skin through sweat. Also when vaporized, they are inhaled into the lungs, causing headaches and indisposition. As a result, many of these common antibacterial products have recently been banned.

SILVER SEAL™ is different.  Our service insures an inorganic antimicrobial solution. Generally speaking, inorganic materials are highly safe (non-volatile) and heat-resistant, compared to organic materials. Therefore, antibacterial materials, if inorganic, can be safe and gentle to the human body.

SILVER SEAL™ solutions use soluble glass containing antimicrobial silver ions.

The active ingredient of the antimicrobial additives in the SILVER SEAL™ solution is all natural, pure silver. Silver and certain other metals such as copper have antimicrobial properties. For example, silverware and copperware have been known to prevent decay of water and food since the ancient times.

SILVER SEAL™ solutions use antimicrobial additives that are based on a soluble glass containing antimicrobial silver ions. Glass is generally considered to be a material with high chemical inertness due to its strong network structure. However, it is possible to lower this chemical inertness by continuously altering its structure, especially in water. Additionally, glass has an interesting property which allows it to retain metal as ions. These properties have enabled chemists to create glass with low chemical inertness which can also retain antimicrobial metal ions such as silver and copper. With the presence of water or moisture, the glass will release these metal ions gradually to function as antimicrobial material.

How It Works

With the presence of moisture, the antimicrobial additive releases a few silver ions gradually. Silver ions have an ability to strongly bind to cellular enzyme of microbes and inhibit enzyme activity of cell wall, membrane, and nucleic acids.

As microbes have a negative surface charge, silver ions with a positive charge are drawn toward microbes, and disturb their electric balance. The result is that the microbes burst their cell walls and are extinguished.

Otherwise, silver ions are taken into microbes where they react and bond to the cellular enzyme microbes. This inhibits enzyme activity and multiplication of microbes, thus extinguishing the microbes. This unique application of this technology introduces a new era in infection control as applied to everyday products and surfaces.

Safety of Silver Seal

The Silver Seal service insures that your antimicrobial solution has all required safety data for each grade of product. Following are examples of safety data.

Acute oral toxicity
There was no case of abnormal reaction or death by single oral administration of 5000mg/kg(2000mg/kg) of Silver Ion antimicrobial additive to mice
Primary skin irritation
No skin irritation response was observed an albino rabbits during or after the skin irritation test suggested in the OECD Chemical Substance Toxicity Test Guidance.(1981)
Mutagenicity
The mutagenicity test based on the bulletin No.77 of the Labor Ministry of Japan (1st Sep.1989)resulted in no increase in reverse mutation and mutagenicity was confirmed to be negative.
Skin sensitization
The skin sensitization test using maximization method demonstrated no skin sensitization on guinea pigs.

In addition to above test results, eye irritancy test, photo toxicity test, and repeat insult patch test have been performed for all approved Silver Seal solutions. Also, products have exhibited excellent safety data in human patch test and quality assurance test for food containers and appliances based on Food Hygiene Law of Japan.