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Author Topic: UV protection  (Read 6093 times)

Salo

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« on: November 18, 2009, 01:42:18 am »

Hello,
any experience using damar varnish with canvas prints ?

Thanks
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Colorwave

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« Reply #1 on: November 18, 2009, 02:49:21 am »

It is slightly yellow when applied and will only turn more yellow over time.  I'd use it if I was looking for a Rempbrandt effect, but otherwise I would stick with a modern acrylic coating.  No solvent to contend with, no yellowing, and good flexibility over time.  I don't think many people are still using solvent based products anymore for good reason.  I use Glamour II, but there are quite a few good water based products on the market that are no longer a compromise, and often superior to traditional coatings.
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Salo

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« Reply #2 on: November 18, 2009, 05:08:58 am »

Thanks for the answer. I asked because of this to : www.ldm.lt/Mokslas/Ragauskiene1.en.htm
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Colorwave

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« Reply #3 on: November 18, 2009, 12:36:32 pm »

Interesting, and very dense read.  I'm really not sure how to interpret the study, though.  They document changes in all of the coatings, and make note of the yellowing increasing with dammar varnish, but seem to still prefer it.  At the end, though, they reach this conclusion:  "For this reason, we are of the opinion that presently it is not expedient to substitute dammar for synthetic polymers (acrylates or ketones)."  Is this an english as a second language issue?  I read this sentence as saying that you should not be using dammar.
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-Ron H.
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Salo

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« Reply #4 on: November 19, 2009, 02:26:14 am »

Hmm, maybe is better to ask the authors of the studies. And this could be helpful to...    http://www.jstor.org/pss/1505780
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Doyle Yoder

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« Reply #5 on: November 19, 2009, 05:56:52 am »

Quote from: Colorwave
I use Glamour II, but there are quite a few good water based products on the market that are no longer a compromise, and often superior to traditional coatings.

Do you have any documentation as to any UV protection in Glamour II?
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StuartOnline

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« Reply #6 on: November 19, 2009, 11:02:29 am »

For most of my prints I have been using PremierArt Print Shield: http://www.premierimagingproducts.com/pdf/...PrintShield.pdf
Print Shield protects all inkjet prints from moisture, UV, light, humidity, atmospheric contaminants, scuffing and fingerprints.
Have used it on most prints from the Canon IPF5000, HP Design Jet 130 and Epson 3880.
Used it on Matt, glossy, satin and other inkjet photo papers.
More information found via: http://www.premierimagingproducts.com/pc_printshield.php
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Thomas Krüger

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« Reply #7 on: November 19, 2009, 03:29:31 pm »

Searching in the area of conservation and consolidation of painting I've found "Acrylic Resin 550/675-32%" from Lascaux.
"Uses - For light proof and age resistant matt varnishes on oil and acrylic paintings, tempera  nd gouache paintings, reproprints, etc."
http://www.lascaux.ch/pdf/en/produkte/rest...s_varnishes.pdf

There is also a whole range of varnishes that can be used as "protective varnish for digital print".
http://www.lascaux.ch/pdf/en/produkte/malh...2_firnisse_.pdf

...and searching further the Lascaux UV Protect products should be ok for us inkjet printers:
http://www.lascaux.ch/pdf/en/produkte/malh...uv_protect_.pdf
« Last Edit: November 19, 2009, 03:36:36 pm by ThomasK »
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Ernst Dinkla

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« Reply #8 on: November 19, 2009, 04:09:15 pm »

Quote from: ThomasK
Searching in the area of conservation and consolidation of painting I've found "Acrylic Resin 550/675-32%" from Lascaux.
"Uses - For light proof and age resistant matt varnishes on oil and acrylic paintings, tempera  nd gouache paintings, reproprints, etc."
http://www.lascaux.ch/pdf/en/produkte/rest...s_varnishes.pdf

There is also a whole range of varnishes that can be used as "protective varnish for digital print".
http://www.lascaux.ch/pdf/en/produkte/malh...2_firnisse_.pdf

...and searching further the Lascaux UV Protect products should be ok for us inkjet printers:
http://www.lascaux.ch/pdf/en/produkte/malh...uv_protect_.pdf


For canvas I use the Lascaux water based acrylic varnishes. They exist in several varieties, gloss, matte, UV filtered. Original B-72 formule as I understand it, which has some credit in art conservation.

I wonder what the Wilhelm test of the Premier Art Print Shield actually measured. Better light resistance or the protection against humidity effects and gas fading during the exposure to light?  I have seen an article (Dutch) that describes the effects of UV blocking glass, perspex and foils. It looks like you need a strong UV filter to get a real effect and it is hard to keep the filter neutral on visible colors then.



met vriendelijke groeten, Ernst Dinkla

Dinkla Gallery Canvas Wrap Actions for Photoshop
http://www.pigment-print.com/dinklacanvaswraps/index.html
« Last Edit: November 19, 2009, 04:10:01 pm by Ernst Dinkla »
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Salo

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« Reply #9 on: November 20, 2009, 02:08:32 am »

I tried Lascaux UV-2 but the matt appearance is very strong. Maybe  UV-3 is better. By the way, anybody know how perform Maimeri products ( Final Varnish with UV filter ) ? I asked the producer about the UV filter - in the specs is separated from ketones - but without response...
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Thomas Krüger

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« Reply #10 on: November 23, 2009, 03:36:59 pm »

Some feedback from Lascaux and a print service from Switzerland: Lascaux UV Protect 3 is the better choice for inkjet prints.

Otherwise its also possible to use Lascaux Transparent Varnish (Code Nr. 2060 - 2065) mixed with 10% water (spray) or with a brush and mixed with 20% water. It should be sprayed or painted two times. Painting the varnish it tends produce some foam. Using a brush daVinci series 5040 it's possible to partly eliminate the foaming.
http://www.lascaux.ch/pdf/en/produkte/malh...2_firnisse_.pdf
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Ernst Dinkla

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« Reply #11 on: November 24, 2009, 03:05:16 am »

Quote from: ThomasK
Otherwise its also possible to use Lascaux Transparent Varnish (Code Nr. 2060 - 2065) mixed with 10% water (spray) or with a brush and mixed with 20% water. It should be sprayed or painted two times. Painting the varnish it tends produce some foam. Using a brush daVinci series 5040 it's possible to partly eliminate the foaming.
http://www.lascaux.ch/pdf/en/produkte/malh...2_firnisse_.pdf

I use the 2060<>2065 product range. Spray coated but the dilution I use is 25%. Two times gloss and a very thin layer of satin after that. Drying in a silkscreen belt dryer in between the process is fast.



met vriendelijke groeten, Ernst Dinkla

Dinkla Gallery Canvas Wrap Actions for Photoshop
http://www.pigment-print.com/dinklacanvaswraps/index.html


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Salo

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« Reply #12 on: November 24, 2009, 05:53:29 am »

They have Lascaux UV Protect 3 in 400 ml spray's to
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