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UV Curing Light for UV Adhesive

01/05/2015 2:44 PM

Hello

I am looking for light to cure UV adhesive. I have tried different kinds of UV, see below .:

http://www.crlaurence.com/crlapps/showline/offerpage.aspx?Productid=3608&GroupID=15683&History=39324:42484:42486:15680&ModelID=15683

http://www.lightinthebox.com/huntereyes-395-400nm-21-led-uv-flashlight-blue-3xaaa_p1498534.html?litb_from=sysmail

However they did not cure the adhesive enough. Can you recommend a handheld UV flashlight/torch that will cure UV adhesive, so it bonds very strong? The material is glass and it is clear only a few centimeters to be bonded with other clear glass.

Look forward to hearing from you.

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#1

Re: UV Curing Light for UV Adhesive

01/05/2015 3:04 PM

did you contact the adhesive manufacturer first?

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#2

Re: UV Curing Light for UV Adhesive

01/05/2015 3:42 PM

Your glass may not be transparent enough to UV, to allow enough power to get to adhesive. Plus the UV power of the devices in your links is total rubbish. You need high power (1-3W) UV led source, preferably 365nm wave length, directed to your target, not UV floodlight. S.M.

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#3

Re: UV Curing Light for UV Adhesive

01/05/2015 3:51 PM

That 2nd lamp, the one that looks like a flashlight, isn't really UV. UV only goes as high as about 380 nm, where the human eye just begins to be sensitive to short-wavelength light. The human eye sees light from 380 nm (blue) to 780 nm (deep red). That lamp is just deep blue (395 - 400 nm).

The other lamp might work, if you let it run a very long time. Most glass absorbs UV, so if the glass is very thick it will attenuate most of the UV energy, and it will take a very long time for the UV-curable adhesive to cure. You might even get a 2nd lamp and keep them both running for a long time. The cure time will also depend on what else you are trying to bond, since the other parts may also be UV attenuators.

Use a box lined with aluminum foil, which is a good reflector of UV, to keep the UV contained within the work area to help with the curing. Also, you don't want to be looking at the UV light without proper eye protection.

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#4

Re: UV Curing Light for UV Adhesive

01/05/2015 3:51 PM

I'm not 100% sure but the small flashlight looking unit is very similar to the ones they sell at hardware stores for night hunting scorpions?

Find a high quality UV lamp that is in the cure range of your adhesive.

And like Phoenix911 commented, did you call the manufacturer?

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#5

Re: UV Curing Light for UV Adhesive

01/05/2015 4:33 PM

What does "cure the adhesive enough" mean? Still soft? Bond failing?

There are many clear cyanoacrylates that will bond glass that do not need UV energy to cure.

Surface cleanliness may be an issue, as well.

Contacting your supplier is the best advice. Depending on the glass, the comments about filtering out the energy may also be the problem. "clear" doesn't necessarily mean transparent to the wavelength you need. Visible light is a longer wavelength, so what appears clear to you may block the shorter UV.

Maybe heat cure, instead of or in addition to UV radiation?

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#6

Re: UV Curing Light for UV Adhesive

01/05/2015 6:31 PM

I would start over and get something that will work for the application....

http://www.dymax.com/index.php/adhesives/glass-bonding

...and follow the manufacturers recommendations....

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#7

Re: UV Curing Light for UV Adhesive

01/05/2015 7:53 PM

Yes I have contacted the manufacturer of the UV adhesive Cyberbond U3050. Cyberbond suggested several UV lights for the UV adhesive Cyberbond U3050 .: http://www.aplica.dk/images/TDS__U_3050_01.pdf for instance Dymax http://www.dymax.com/curing-systems/spot-lamps/bluewave-led-dx1000-visicure

However I was looking for a cordless UV light as I have no access to 110/220 V where the bonding is going to take place. Instead I have looked at battery driven devices such as Maxxeon Workstar 2103 http://www.maxxeon.com/uv_curing_light_workstar_2103.html and Electrolite Led 200 http://www.electro-lite.com/PDFs/LED-200.pdf Both seem to do the job but I have no experience with these.

products!?

Looking forward to your replies. Thanks in advance

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#8
In reply to #7

Re: UV Curing Light for UV Adhesive

01/05/2015 8:33 PM

I'd try the 4th option you show, the electro-lite LED-200. It's operating wavelength is 365 nm, which is near the center of the recommended wavelength band for curing the adhesive. You probably will want to mount it on a movable stand, to position it as needed. Be sure to wear UV filtering eye protection.

You might also do a search on 'battery powered 365 nm UV lamps' to see what other options you can find.

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#9
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Re: UV Curing Light for UV Adhesive

01/05/2015 8:51 PM

Something like this model http://www.spectroline.com/content/olx-365-ndt is it powerfull enough according to the specs in your mind?

What about the other model Workstar 2103 from Maxxeon http://www.maxxeon.com/uv_curing_light_workstar_2103.html would it be able to cure the adhesive acc to specs??

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#16
In reply to #9

Re: UV Curing Light for UV Adhesive

01/06/2015 12:00 PM

The LED-200 produces 2.5W/cm2; the Maxxeon Workstar produces 0.2W/cm2; the Opti-Lux produces 0.01W/cm2.

So obviously the LED-200 is 12.5 times more powerful than the Maxxeon and 2500 times more powewrful than the Opti-Lux.

If I was having trouble with the UV adhesive not curing, I'd try the most powerful of these 3 options, the LE-200.

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#10
In reply to #7

Re: UV Curing Light for UV Adhesive

01/05/2015 9:02 PM

You may want to take advantage of this:

Evaluate Light-Curing Equipment Free for Two Weeks

Then you will know if it is right for you.

Also, there are ways around the 120V AC requirement. An auto battery and inverter for instance.

Still, consider that the glass may inhibit the transmittance of UV energy and heat is very likely an option after cross-linking has been initiated by the light.

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#11
In reply to #10

Re: UV Curing Light for UV Adhesive

01/05/2015 9:17 PM

Rental could be an option to consider.

The glass I use is very ordinary, to be used in windows, specs below

- Thickness 3 mm
- Weight 7,5 kg pr. m2
- U-value 5,8 W/m2K (DIN EN 673)
- Soundreduction 30 DB
- Light transmission 90 %
- G-value 88 % (EN410)

I always degrease the glass before bonding, so the surface is absolutely clean!

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#12
In reply to #7

Re: UV Curing Light for UV Adhesive

01/05/2015 9:20 PM

Maybe a small portable inverter generator.....

https://www.youtube.com/watch?v=qZFCh27h4Tg

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#13
In reply to #12

Re: UV Curing Light for UV Adhesive

01/05/2015 9:38 PM

Perhaps a generator is overkill!! It is a very small job

I was thinking of an easy to handle torch like https://www.youtube.com/watch?v=wCqRwZIazMk

It indicates it can cure adhesive, however I have seen these statements before and they not always deliver as promised!

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#14
In reply to #13

Re: UV Curing Light for UV Adhesive

01/06/2015 4:29 AM

I am expecting to have a similar problem on a new project I am working on, units recommended by the manufacturers are generally to expensive for the application. I will require a very small spot 2mm dia; my thoughts at the moment are to go for a torch with the right wave length and if its not powerful enough use a magnifying lens to focus the light in to a small spot.

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#15
In reply to #7

Re: UV Curing Light for UV Adhesive

01/06/2015 10:07 AM

Electro-lite LED-200 is the most powerful of the options that you showed, it should work.

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#17
In reply to #15

Re: UV Curing Light for UV Adhesive

01/06/2015 3:31 PM

This could also be an option http://ndtsupply.com/led-hp3-high-intensity-focusing-uv-a-flashlight.html ?

Is it more powerful than the other mentioned? I dont know what to look for in the specs???

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#18
In reply to #17

Re: UV Curing Light for UV Adhesive

01/08/2015 11:42 AM

Any comments to above torch from Ntdsupply??

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