UV curing LED light for UV adhesive

LED Flashlights – General Info
1

Hello

I am looking for a LED flashlight/torch 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

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. The data sheet for the UV adhesive I use.: Forside - 

Look forward to hearing from you

Best regards

Christian Brøndum

Denmark

2

Welcome to BLF!

There are probably many very expensive options, but a cheap flashlight that may do the job very well is this Convoy 365nm flashlight. It is just on the market and only available through Ali Express for now, so I hope you will be able to buy there. You will need a 18650 li-ion battery with it and a suitable charger (there is way too much info on this forum about batteries an chargers but one thing: I recommend use quality batteries from well-known manufacturers like Panasonic, Sony, Samsung, LG and the like).

http://www.aliexpress.com/store/product/convoy-s2-365nm-flashlight/330416_32253247215.html

3

Thanks!

The problem I have noticed with UV LED curing light is the lack of power , w/cm2 , to curing for instance adhesive. The UV adhesive I use recommend 4mW/cm2 as minimum, however I am not sure what output Convey 365 has?

I have looked at below lights also.:

http://www.electro-lite.com/PDFs/LED-200.pdf

http://www.mte-led.com/show_imgnews.asp?id=448&title=U301

http://ndtsupply.com/led-hp3-high-intensity-focusing-uv-a-flashlight.html

http://uvet.lightingexp.com/high-power-365nm-UV-spot-curable-adhesives-device-P5084.html

Price range from apprx $100 to 1700 usd.

4

Here is a chart on the matching up of UV lights to uses, that someone else posted here before, I don’t know if it helps the discussion or not.

Here is the link to it. http://www.xenopuselectronix.com/xeled/PDF/XeApplications.pdf

5

Excuse me. Did I hear someone say Convoy 365nm flashlight? :bigsmile:

6

Yes, that is correct most UV adhesives needs nm365 to cure, as the chart also shows, but the output, w/cm2 is also important inorder to cure - for instance adhesives like Cyberbond, Loctite etc.

7

You can build a better 365nm light cheaper than you can buy them from that list. About $15 for the host and the driver under $5. The LED is the pricey part of it. I have the LED Engin LZ1-10UV00-0000 (20mm star) in my Convoy M2 driven at 1 amp.

http://www.digikey.com/product-highlights/en/lz1-uv-365-nm-gen2-emitter/53072

8

Ok, but I dont think I have the skills to build a flashlight myself! I have been told that Nichia LED is perfect for LED curing!?

9

Put arctic silver under the star, screw in two screws to hold it down. Solder the two wires from the driver to the star, screw the driver retaining ring in place, drop the reflector, lens and o’ring in then screw the bezel in. Then you put a 18650 battery in there and away you go.

10

Ok, sounds esay, - do I buy it as a kit or what? Manual included? I have never build a LED light before or something similar!!?

11

Just do some reading around here and you’ll get an idea real quick on how it’s done. If you can’t solder, find a friend who can solder those two wires for you.

I host my M2 host and 1 amp driver from RMM who post here. His store is http://www.mtnelectronics.com/

Don’t forget the tweezers . They help with putting the LED in place and are perfect for screwing the driver retaining ring in place.

EDIT:

I used this driver . I used the M2 host because it was just easy to screw a star down with 2 screws. The M1 host should be just as easy.

I also bridged #2 star to ground ring to disable the “disco inferno” mode.

EDIT 2:

(-) 1, 2 and 3. Any one can be used.
(+) 4, 5 and 6. Any one can be used.

EDIT 3

MCPCB star sits in here, held down with screws. Wires come out of the other two holes.

Driver sits in here and is held in place with a brass ring.

I hope that is a good enough explanation.

12

Thx, I will give it a try!

13

Looks cool!

14

You know some who could build a custom made UV LED light for curing UV adhesive, with a lot of output power, w/cm2, and nm365 !??

15

i had been using a couple different low power UV flashlights lights to cure NOA and have found that it takes all night to get a partial cure. I made a light using the LZ1 emitter linked above and it cures in seconds. Much better.

this is a good thread if your going to make one: making a small UV-zoomie with the new Ledengin LZ1 360-370nm led

im just building a second one using these components:

http://www.fasttech.com/product/1277401-convoy-s2-diy-edc-led-flashlight-host
https://www.fasttech.com/products/1612/10001683/1122400
http://ca.mouser.com/new/ledengin/led-engin-lz1-365nm-emitters/

16

and thats all the components you need to build a UV flashlight for curing UV adhesives?

17

yup that’s all you need. Plus some wire and solder and a battery. you will also need a protected 18650 battery and a charger if you don’t already have one.
http://www.fasttech.com/products/1420/10001980/1315402
http://www.fasttech.com/products/0/10001637/1319800-nitecore-i2-lithium-li-ion-ni-mh-ni-cd-smart

18

then I will try to build one with same specs as below from UVATA with Nichia LED

19

http://www.candlepowerforums.com/vb/showthread.php?392236-Interest-Thread-Nichia-365nm-high-Power-UV-P60-Dropin-Custon-made

20

Not contributing to the conversation, but this was really cool to read.