Acrylic vs Polymer?

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Posted 8/14/2012 by ramikem in General Stamping
 

ramikem
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Posted: 8/14/2012 11:36:04 PM
Hi All. I'm pretty new here. Been signed up on 2Peas for a while but just starting to get active on the boards. I'm wondering if someone can tell me the difference between acrylic and polymer stamps? And is there a way to tell them apart by looking at them? I read somewhere that MME's new doily stamps were polymer but it says acrylic on the package so it made me curious. Hope this isn't a dumb question!

howdyheidi
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Posted: 8/15/2012 7:34:18 AM
Often the photopolymer clear stamps are made in the USA. I researched the MME stamps and I read on another website that they are clear acrylic, not photopolymer (but I don't actually own them).

Another clue is often the price. The photopolymer stamps are more expensive, but they produce a much much better result and you can use a lot of different inks with them.


~~Heidi~~

looser
The Craft Curmudgeon

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Posted: 8/15/2012 10:35:58 AM
Nothing 'dumb' 'bout your 'Q'!

Tanx for the post, Heidi! Learned a bit. I tend to see the terms 'acrylic' & 'polymer' as synonyms. But 'photo-polymer' is a recent term for me.

Sounds like it would be good to know which companies are mfg the photo-polymers. As I've often said, I'm willing to pay for quality when it makes my crafting easier & more effective.

Suggestion? If we share brand names, let's do the both the 'shorthand' & the full name. OK? MME?


Daniel R. Boone

howdyheidi
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Posted: 8/15/2012 11:17:52 AM
MME = My Mind's Eye

Sorry Daniel, you are right about using full names for clarity.

And to the poster, another difference is that the high quality photopolymer stamps have a distinctive plastic-y odor to them and they stain easily (which doesn't affect stamping).

TO Daniels comment about how confusing it is: The thing is an "acrylic" IS a polymer (which you probably already knew). So are dozens of other plastic items and if you want to break it down and look at the chemistry you can break down acrylics into all sorts of specific acrylics and then further by what additives they have. But we won't because I doubt anyone but me cares...

It is easy to get confused and it seems to me the naming in the stamping industry isn't 100% set. People say clear, acrylic or polymer, photopolymer etc.

I think the better brands say they are "High Quality Photopolymer made in the USA." If it doesn't say that I am wary. The "clear stamps" from Hero Arts, Technique Tuesday, Crafty Secrets, Lawn Fawn, Stampendous, Gina K all are the high quality photopolymer.

The descriptions on TwoPeas aren't always enough to figure it out.


~~Heidi~~

yellowcherrios
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Posted: 8/15/2012 11:46:35 AM
Thank you Heidi for explaining about acrylic. Very helpful and interesting!

I too found this to be true when trying to find out what kind of plastic to store my clear and cling stamps on a few month ago. I found that there are some additives added to some plastics and acrylics which react with the cling stamps making them not stick to mounts (though those are acrylic too--but I'm guessing a safe acrylic??) It does get confusing!! In the end I just tried to find something that said "acid-free" for stamp storage.



Melissa

charkins mom
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Posted: 8/15/2012 5:45:10 PM
Here is a link to a great FAQ on photopolymer stamps by a stamp manufacturer.
Clear Stamps FAQ


Cora
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looser
The Craft Curmudgeon

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Posted: 8/16/2012 11:42:17 AM
We have such a great bunch of 'eggheads' on our forum! Yep. I do know about monomers & polymers--even know why (most) acrylic paints won't bond to non-poreous substrates... (there are microscopic pores in the dried paint that allow moisture to enter) But I digress...

TY on the info Heidi--'especially the brands. Ditto on the FAQ link, Cora!


Daniel R. Boone

ramikem
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Posted: 8/16/2012 2:39:24 PM
Thank you all for the help! It's a little less confusing now. I think.
The brand name info did help so thank you, Heidi. Gives me something to compare some of the other stamps to. Thanks again!
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