Chemical Nano Technology   ~   Total Edge Seal   ~ For Polycarbonate and other lens materials Combining all Properties: HYDROPHOBIC , HYDROPHILIC and OLIOPOHOBIC Updated 01/02/2012

 

 

 

	Protect your lens edges from  chemicals attacks, like facial acids and or chemical fumes .this mean I 't use al or

So does this mean I shouldn't use alcohol or All Off to clean drilled poly lenses at all or does it mean that I just need to be careful not to get it near the freshly cut edges?

1).............  All poly lenses are dip coated with a protective hard coat, by the manufacturer after they come out of the injection mold. That goes for blanks as well as finished uncut lenses. When dip coating even the the edge has a protective layer.

2) ..............when the lab surfaces a lens blank on the minus side, it re coats the minus side before it leaves the lab. If the lab would use any chemically non compatible agents for cleaning and so forth, it would start a destructive chain reaction that would craze the lens within about 12 hours.

3)..............When the optician receives the lens in good condition it assumable that has been no damage done by the lab, therefore you have to use the standard caution on the lens which after you work it, has several non protected areas:

a)  Drill holes

b)  The whole edge of the lens for 360 degrees 

4).............If you do not use any alcohols, acetones, neither as lens cleaners or marking removers you should be fairly safe. Use only marking removers that are safe for poly and don't give customer a lens cleaner that contain any trace of methanol which most of them do if they don't state that they are made from surfactants only.

5) ...........The edge of the finished lens is now your most endangered area on the whole glasses. It is the largest non coated area on the lens and is susceptible to chemical attacks either by fumes or liquid chemicals. ( a women doing her fingernails, a guy using paint thinner, gasoline fumes and thousands more)

6)............We have developed a product a few years ago that is made from several silicon copolymers mixed together and cures by humidity. We have just discovered, that, even if it has been used for other applications, when applied to un-protected polycarbonate edges, it gives them a total seal against against most common chemical attacks. One drop can coat up to 4 pairs of lens edges, is totally invisible and will last for years.

A lot of big, even corporative and small labs and retailers today, are users of our "DrillSeal" to protect poly drill holes from crazing for the last 3 years, well promoted by "Vision Ease". 

And I believe that "Total Seal" will become another success as it actually solves the other big problem of the "open wound" on polycarbonate lenses.

How to Treat a Lens

Simply apply Total Seal with s paper tissue around the lens edge when it is ready to be mounted into the frame. Hold into the steam of a boiling water kettle for a minute or so. Then wait about 5-10 minutes and buff with a new paper tissue. That is all it take. The lens edge is now fully protected.