Foam

They are removable from my glider rocking chair. Can I put them in the washing machine and hang dry them?

When we did something similar, we took the covers off (ours were removable, but if yours aren’t, don’t worry), put the foam in the bathtub, filled with warm water to cover and a little Tide, then did the ‘grape stomping’ thing. Then, we drained the tub, stomped some more to get more water out, filled with water to cover and stomped some more to rinse, and repeated until the water seemed clean. Then, we hung them outside to drain and dry.
Good exercise and effective, too!

Which ever the two is the thickest or has the highest R-Insulation value.

polyurethane is any polymer consisting of a chain of organic units joined by urethane links. It is widely used in flexible and rigid foams, durable elastomers and high performance adhesives and sealants, fibers, seals, gaskets, condoms, carpet underlay, and hard plastic parts. Polyurethane products are often called "urethanes". They should not be confused with the specific substance urethane, also known as ethyl carbamate. Polyurethanes are not produced from ethyl carbamate, nor do they contain it.

This foam is used in:
Varnish, Computer mousepads, Glue, Wheels (solid tires), Furniture castings, and so on

need to buy it for my major design and technology project for hsc

I would guess a hardware store. try to google and get a product name

could you send me a link

Chemicals are added to produce gas in the mix used to make the polyurethane – Many ways http://en.wikipedia.org/wiki/Polyurethane

We just bought our kids a new bunk bed from IKEA and we got these nice foam mats that go with the bed and they are made of polyurethane foam. I get concerned because ive heard that it causes breathing problems and maybe even sids…not sure if this is a for sure study. But I just want some advice so I can sleep at night. Has anyone ever used these? They had these vinyl crib mattresses before so now im just a little worried about them sleeping on this.

There shouldn’t be a problem & if there was, it would be due to the liner being removed, exposing the actual poly itself. You see, the poly is a very dense foam material that can easily be damaged if you were to remove the liner from it. I know this first hand, because I unfortunately did just that, only to wash it… Unbeknown to me, was the mattress’s sensitivity. So, by the time the liner was washed & dried & ready to place back over the mattress, strange enough, it folded over like a taco & split right in two. Fortunate for me, my mom sells these for a living & was able to get me a replacement @ cost. I’m not saying that this would happen to you…it’s just advice for your mattress’s future. Also, I asked my mom about the possible health issues & got the reply that it’s more over hearsay than anything else…Or at least she’s never heard of any actual claims in her 22 years of selling mattresses. I wish you the very best of luck with these mattresses & have a happy, safe New Year!!!

could you send me a link

Chemicals are added to produce gas in the mix used to make the polyurethane – Many ways http://en.wikipedia.org/wiki/Polyurethane

How isP U foam made before it is cut in sheets

Foam is made through the following process: A big pile of goop (usually in your case urethane monomers that will eventually become foam) sits there. What it is, is basically a very poor fuel. It’s a bunch of unlinked hydrocarbons ready to release some of its energy.

Then what happens is you start the chemical reaction somehow (either with catalyst, a small fire underneath it, or some other means depending on your monomers), and that gets a chain reaction going where the hydrocarbons break their original bonds and form new ones.

This generates a bit of heat (which is why I said it’s basically a crappy fuel), but instead of forming CO2 and water as a waste product, it produces so little heat that all it can do is fuse itself into a larger clump (hence poly-meaning multiple-mers).

But as this reaction happens, some gas IS also released, whether it be steam, co2, (or an ozone depleting gas that was used to make surfboard foam). That’s what causes the styrofoam to puff up as it hardens (kind of like baking bread). Actually, a lot like baking bread.

I noticed that underneath my house there is no insulation. In researching about insulation I learned that the traditional pink insulation absorbs water, can mildew and gets thin over time. Plus it needs space around it to allow it to breathe so it wont collect moisture which results in gaps or leaks of temperatures around the house. This didn’t sound too good to me and then I discovered the Polyurethane Spray Foam Kit at sprayfoamdirect.com It sprays on like paint and then expands to 1" with an R value of 7 so it seems simple to use, much cheaper than the regular pink insulation and it fully covers all the surface with no gaps and doesnt absorb moisture. I just want confirmation that this stuff really works as it says. Can someone back this up? Thanks!

I would use it if I could afford to. Not only do you get the r-value, but it makes your floor air-tight. I think that the air draft stoppage is as important as the insulating factor

than 60 days…Is that real leather or not??? What can I do…

First… reeeeeeeeeeeeeLAX!

Furniture manufacturers have to disclose ALL the materials they put into a piece of furniture, not just the exterior materials.

Your couch’s cushions are made of polyurethane foam… that’s the dense squishy stuff inside the seat and back cushions, and possibly in the arms.

The cushions are, however, covered in LEATHER… and that’s what a LEATHER couch is: leather on the exterior parts and "other stuff" on the inside. Just like velvet drapes would likely have velvet on the front side, and a poly-blend material on the back side.

You most likely got exactly what you ordered/paid for.

Hope this helps,
    TX Griff