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View Full Version : Source for "liquid" Neoprene??



hwingo
03-08-2010, 08:13 AM
Years ago, one could purchase a liquid material (which must be mixed}, that when cured, closely resembled “closed cell neoprene”. It was quite spongy on the inside (just like neoprene used for diver’s wet-suits), very light weight, and it provided a very smooth (non-porous) outer skin which sealed inside-open-cells from the elements. The smooth surface could be easily wiped clean with a damp cloth.

My need for this is to make custom fitting containments for various items. I have used spray foam (the type used for sealing cracks around windows and doors) with success albeit a time consuming, often messy process. I realize that I can purchase “pluck & pull” foam sheets, like that which comes with Pelican Cases, but I don’t want to use that because it does not provide a “custom fit”.

Do any of you know anything about this material and do you know of a source for this material?

Harold

IdahoJim
03-08-2010, 11:21 AM
Devcon makes a material called Flexane that is liquid rubber. I don't know if you can get the air voids in it like closed cell neoprene.
Jim

Fasttrack
03-08-2010, 11:29 AM
Hmm ... See here:

http://www.rtvanderbilt.com/waterborne_10_1.htm


Otherwise, check out companies which serve the boating industry. They use neoprene dips to protect parts from corrosion, from what I understand.


How about using some type of polyurethane foam? I know you can get flexible polyurethane foam from halloween prop stores. I use it for filling halloween props/masks etc. It's pretty durable and squishy.

See here - the flexible foam stuff: http://www.frightprops.com/FrightProps/props/Product.asp?ID=0632

Edit:

I just googled "Liquid Neoprene" and found:

http://www.boatfix.com/bykeywordmerc.asp?textfield=92-25711%20%203&texttype=2&submit=Search

http://www.amazon.com/Johnson-Evinrude-BRP-Neoprene-0909570/dp/B001KYH69I

Allan Waterfall
03-08-2010, 12:21 PM
You could try these people for pourable polyurethane foam or rubber.
http://www.smooth-on.com/

The rubber might be better if you're wanting a reuseable containment.

Allan

Scishopguy
03-08-2010, 04:23 PM
Harold...We used to get electronic gear that was shipped in to the department and was packed in heavy cardboard boxes. It was encased in foam filled garbage bags that were form fitting. What they did was shoot the expanding foam into the bags and place the equipment on top of it inside the box. It would swell up around the item and make a form fitted insert. It took a little trial and error to duplicate this, so you know how much foam to squirt in the bag, but it worked pretty well.

Black_Moons
03-08-2010, 07:26 PM
Iv seen the 'inplace' foaming method, the only problem is unless they are nice enough to completely cover the box before foaming (usally they fill the bottom then put a plastic sheet over it) you can NEVER remove all that foam to get the box back.

johnnyd
03-08-2010, 09:09 PM
Here's a link to a "foam in place" supplier...
http://www.sealedair.com/products/protective/instapak/instapak.html
I think U-Line packaging has some also.

hwingo
03-09-2010, 06:41 AM
Hi Guys,

Sorry to be so slow at responding. I was "On Call" all day yesterday and last night which puts a damper on quick responses.

It appears there are several sites that show promise. Sealedair.com has an instant pack that might be quite useful. I very much appreciate your responses.

Thank You!

Harold

DFMiller
03-09-2010, 09:26 AM
The sealed air instant packs are useful but they only sell them in cases of bags. I can't remember how many to a case but is was several hundred bucks a case. We used that for a bit them went to the 45 gal drums of the stuff and a machine that made custom filled bags. Its been working good.

Scishopguy
03-09-2010, 03:16 PM
Iv seen the 'inplace' foaming method, the only problem is unless they are nice enough to completely cover the box before foaming (usally they fill the bottom then put a plastic sheet over it) you can NEVER remove all that foam to get the box back.

I guess it is done differently by different businesses. The ones I got had the foam shot into plastic bags. When the equipment was removed, the liner, in it's bag, came out of the box without a problem. I saw the same technique in shipments from Fischer Scientific, Sigma Chemical, and several others.