Anti-slip coating for super hydrophobic lenses

[Websta]

Is there anyone who is able to provide me with any information on how we could apply a anti-slip coating over our super hydrophobic coated lenses?
We have tried numerous blocking pads, and the best is from Essilor and Weco, but we need something more substantial as our loss on wasted lenses is getting out of control.

If someone can give me a supplier who provides a coating or a special pad that we can use, I would be very interested.

Thanks

[AWTECH]

I have tried these as we use a super hydrophobic and they seem to work great.

see www.optochemicals.com

Non slip "HOOKER" blocking pads, the Latest Invention From OMS Opto Chemicals

[Jacqui]

We tried the Hooker pads and are completely satisfied with them. Ask Chris Ryser for samples.

[mauroventura]

Hello Websta,
I know that essilor in its Crizal Alizee use a special temporary coating to avoid problem during the edging phase.
My Opinion is that this coating could be a very thin layer of Magnesium Fluoride MgF2 ( search it to Cerac inorganics USA , Phone 001-414-289-9800 Fax 001-414-289-9805)


bye

Mauro Ventura

[coda]

Hello Websta,
I know that essilor in its Crizal Alizee use a special temporary coating to avoid problem during the edging phase.
My Opinion is that this coating could be a very thin layer of Magnesium Fluoride MgF2 ( search it to Cerac inorganics USA , Phone 001-414-289-9800 Fax 001-414-289-9805)

That would imply that the MgF is applied over the hydrophobic coating. This seems pretty unlikely though if the hydrophobic coating is applied in the vacuum chamber it is possible. Low temperature processed MgF is water soluable so it would wash away after/during edging but would probably survive for a while under the block.

[Judy Canty]

I have tried these as we use a super hydrophobic and they seem to work great.

see www.optochemicals.com

Non slip "HOOKER" blocking pads, the Latest Invention From OMS Opto Chemicals

Chris,
Can I get a sample of this product to try?

Judy Canty

[mauroventura]

Hello Coda.
Yes, you're right! I mean a very thin MGF layer applied at Cold temperature over the hydrophobic layer; at the end of the AR process.
I don't know any other kind of material that keep to increase temporary the surface energy of lens so that optician people can work lens.

[FROMONT CHRISTINE]

ii HAVE A GOOD SOLUTION FOR BLOCKING THE HYDROPHOBIC LENSES : WE HAVE NOW SPECIAL BLOCKING PADS ADAPTED AND LENSES DOESN'T SLIDE
Actually on promotion please fax at CMV 33 04 79 63 02 71 for details
Christine FROMONT:)



QUOTE=Websta]Is there anyone who is able to provide me with any information on how we could apply a anti-slip coating over our super hydrophobic coated lenses?
We have tried numerous blocking pads, and the best is from Essilor and Weco, but we need something more substantial as our loss on wasted lenses is getting out of control.

If someone can give me a supplier who provides a coating or a special pad that we can use, I would be very interested.

Thanks[/QUOTE]

[FROMONT CHRISTINE]

[hYE DEAR MAURO VENTURA?

It is funny to contact you there. Well if you have problem also with the hydrophobic lenses, you know CMV Optique in France of course.... I can help.
Kindly
Christine





QUOTE=mauroventura]Hello Websta,
I know that essilor in its Crizal Alizee use a special temporary coating to avoid problem during the edging phase.
My Opinion is that this coating could be a very thin layer of Magnesium Fluoride MgF2 ( search it to Cerac inorganics USA , Phone 001-414-289-9800 Fax 001-414-289-9805)


bye

Mauro Ventura[/QUOTE]

[FROMONT CHRISTINE]

WE ARE MANUFACTURING PAD PRINTING MACHINES FOR MARKING THE PROGRESSIVE LENSES AT VERY VERY COMPETITIVE PRICE. FOR MORE DETAILS CMV@CMV.NET IN FRANCE

Is there anyone who is able to provide me with any information on how we could apply a anti-slip coating over our super hydrophobic coated lenses?
We have tried numerous blocking pads, and the best is from Essilor and Weco, but we need something more substantial as our loss on wasted lenses is getting out of control.

If someone can give me a supplier who provides a coating or a special pad that we can use, I would be very interested.

Thanks

[FROMONT CHRISTINE]

We are also manufacturing pads special adapted for super hydrophobic lenses and lenses doesn't slide cmv@cmv.net:)

WE ARE MANUFACTURING PAD PRINTING MACHINES FOR MARKING THE PROGRESSIVE LENSES AT VERY VERY COMPETITIVE PRICE. FOR MORE DETAILS CMV@CMV.NET IN FRANCE

:)

[QDO1]

lets keep the adverts in the right forum

[fjpod]

Is there anyone who is able to provide me with any information on how we could apply a anti-slip coating over our super hydrophobic coated lenses?
We have tried numerous blocking pads, and the best is from Essilor and Weco, but we need something more substantial as our loss on wasted lenses is getting out of control.

If someone can give me a supplier who provides a coating or a special pad that we can use, I would be very interested.

Thanks

We use generic lens protectors without problems. But, you should really look at whether your edger wheel or blade is SHARP. Dull cutting leads to increased friction and heat under the pad as the lens turns on the wheel resulting in rotation and A/R crazing. With sharp cutting surfaces, I don't think you need any non-slip coatings or protectors at all.

[keithbenjamin]

Our customers have had some luck, depending on the edger, by simply cleaning the lens with denatured alcohol or acetone prior to blocking. I know that scares a lot of people, but it's what Zeiss has recommended for the Advantage. Barring that, the Hooker pads have seemed to work well on a variety of edgers.

-Keith

[fjpod]

Our customers have had some luck, depending on the edger, by simply cleaning the lens with denatured alcohol or acetone prior to blocking. I know that scares a lot of people, but it's what Zeiss has recommended for the Advantage. Barring that, the Hooker pads have seemed to work well on a variety of edgers.

-Keith

I've heard you shouldn't do this (alcohol/acetone) with Crizal Alize, because they put a temporary coating the lens to prevent it from slipping in the edger.

[Chris Ryser]

Chris,
Can I get a sample of this product to try?

Judy Canty

Of course Judy,

Just send me an e-mail as well anybody else who wants some Hooker pad samples, at oms_optical@yahoo.com

[sujeet]

Hello Mauroventura,

I was wondering about the MgF2 coating that Essilore applies. Do you think thay have a Patent on this. I was told by someone.
Regards,

Sujeet

[coda]

You can allways search the US patent office site for issued US patents. Go to: www.uspto.gov.

I wouldn't be surprised if there's a similar site for European patents, I just don't know what it is. Seems like the sort of thing Chris would know.

-Matt

[Darryl Meister]

I was wondering about the MgF2 coating that Essilore applies. Do you think thay have a Patent on this

I doubt Essilor would have a patent on the use of Magnesium Fluoride (at least by itself), since as far as I know the material was used in some of the first antireflective coatings, which were invented by Smakula at Zeiss in the 1930s.

[coda]

I doubt Essilor would have a patent on the use of Magnesium Fluoride (at least by itself), since as far as I know the material was used in some of the first antireflective coatings, which were invented by Smakula at Zeiss in the 1930s.

Very true but they may have a product patent on it's use as a removable stiction improving coating.

[Darryl Meister]

Very true but they may have a product patent on it's use as a removable stiction improving coating.

Ahh... I see what you're saying. I didn't read this thread carefully enough.

[FROMONT CHRISTINE]

Very true but they may have a product patent on it's use as a removable stiction improving coating.

Hello,

To all optical laboratories : we can create for you your company'slogo to print on the lenses. If you don't have any idea for a logo, please contact me at cmv@cmv.net We will find an idea.
Kindly
Christine FROMONT

[FROMONT CHRISTINE]

Hello,

To all optical laboratories : we can create for you your company'slogo to print on the lenses. If you don't have any idea for a logo, please contact me at cmv@cmv.net We will find an idea.
Kindly
Christine FROMONT

Hi to Gerry,

Will contact you by phone soon. I am very interested of your suggestion.
Keep in touch,
Christine FROMONT
CMV optique

[Chris Ryser]

I wouldn't be surprised if there's a similar site for European patents, I just don't know what it is. Seems like the sort of thing Chris would know.
-Matt

No idea on that........................but have not searched either.

I still say that opticians should buy regular AR coatedf lenses,............cut the lenses to fit the frame and then apply the slick coat themselves. I can be done very easily in house.

You have eliminated the slipping problem.....saved on messed up lenses and applied a slick coat that is dust and oil repellent with anti fog properties at the same time which none of the Alize and others can provide.

[Chris Ryser]

There is also another solution to slippage.

1) get the lenses without the slick coat

2) cut lenses

3) apply slick coat after cutting in simple in house application

No more off axis lenses..............plus a slick coat that has besides all other goodies even an anti-fog property.

:cheers: