Help Spray Adhesive Blowing print

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thelittlethings

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I was asked to make this little plaque made of black latex painted pine for a friend and now I’ve been asked to make more. Here’s my problem:

When I use Spray Adhesive on the 2.5” x 6” print, the air pressure from the spray can lifts the edge of the print up and I get adhesive on the front of the photo.

Are there other quality adhesives I can use to mount the photo on the wood? I want a small edge of wood to show around the print so spraying the wood itself is not ideal.

I did a search on Bienfang’s Unstik and that sounds like a possible solution, however, if I can figure out a way to spray the adhesive on without the print lifting, then that’s one less step and a time / money saver for me. (I’ll go ahead and tell my Aggie Engineering: I drilled 4 holes in a heavier piece of wood and stuck 4 shish-ka-bob skewers in them to hold the edges down but that didn’t work because it was too flimsy…..hmmmmm…..what about drilling holes for icepicks? That might work!)

Any suggestions?

Thanks for any help…

Ellen
 
What kind of print is the print? Photographic? Paper? Glossy or matte? You may be able to temporarily hold the prints down for spraying with a little roll of magic tape?

i would not try this unless you have the ability to recreate any ruined prints.
 
get a pressure sensitive mount film
rol it onto the back of the print and trim clean

then apply to the timber. easy as 1,2,3

drytac double sided mount film would work a treat
 
I agree with Steve, double sided film would mean no wet glue coming onto the surface at all, and at that size you wouldn't need to put it in a press if you used pressure sensitive film, just use a little roller, however if you have a cold press would be better.
 
PMA is a double sided mounting film. It's re-positionable right up until you longer need it to be and apply pressure (with a spatula that comes with each roll)
 
The PMA's bond is tenuous at best. It wasn't designed for plaque mounting. There are some films (forget the names, but they may be from Drytac as suggested) that are much more well suited for this purpose. I got some samples at one of the trade shows a few years back and from experience, they are not repositionable.
Good luck with your project. Moving away from spray adhesives is a good idea, both for your health and the successful mounting of the photos. It too will fail eventually.
 
With any pressure sensitive adhesive (Spray/PMA/whatever) the key word is pressure. You need a heck of a lot to get anything like a permanent bond. The only time I have used spray is with decorative paper panels on mats and that was in strips no more than 1/4" wide. Also, with spray you have to wait for a few minutes for the solvent to go off. Apply too soon and you get bubbling. Wait too long and it won't bond. With thin strips I burnished down hard with an agate over some release paper. I have some samples that I did 20 years+ ago and they are still stuck fast.
But I would not use this method on anything bigger. Trying to get hard pressure on a bigger area would be very time-consuming and you risk making grooves in the surface. (unless you use a cold mounting machine with rollers and I have doubts whether this would give enough pressure to bond a spray adhesive). The thing is with sprays, if a localised area doesn't bond firmly you get a bump. The only way to fix it is to remove the whole print. Messy process.
In this case the only reliable and clean way is to use a heat process IMHO.
 
How about positioning the print on the wood & then taping off "border" area before spraying.
This way you can spray adhesive on both the print & the wood backing.
You can also, very gently hinge tape the front of the print in position, imagine a flap.
So,
1. Position print on prepared wood base. Weights can be helpful.
2. Tape off wood border.
3. Run thin piece of removable tape, making flap at top of print.
4. Flip print over.
5. Spray back of print & wood surface with spray mount adhesive.
Then flip print back in position, hand smooth flat, remove tape hinges and dry under weights or in vacuum press.
 
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