ILD vs Thickness - confused ?
Mar 25, 2010 1:12 AM
Joined: Mar 2, 2010
Points: 27
FBM claimed in an older post that

"The 6" firm latex core cut in half is the 3" medium toppers. When you make them thinner they loose the firmness

 

According to PFA the statement appears true for PU foam

4.3 IFD varies significantly with foam thickness. On the exact same foam, the IFD increases as the thickness increases, as the following chart illustrates:

All samples are 20" x 20" x stated thickness.
Sample Thickness (inches)    IFD at 25% deflection (lbs/50 in squared)


4---------------------------28.0

5---------------------------31.0

6---------------------------34.5

7---------------------------38.5

8---------------------------43.0

 

Is this statement applicible to Latex ?

PU foam has High resiliance, latex has no resiliance.  Looking more for the facts than opinions.

 

Anyone ?

 

 

 

 

This message was modified Mar 25, 2010 by zzzombie
Re: ILD vs Thickness - confused ?
Reply #2 Mar 25, 2010 12:11 PM
Joined: Aug 17, 2009
Points: 542
ILD is the same as IFD.

The standard for measuring ILD (IFD) is a piece of foam 24"x24"X 4" thick.

If you increase the thickness you change the ILD.

Latex International, as far as I know, subscribes to this standard.

This message was modified Mar 25, 2010 by eagle2
Re: ILD vs Thickness - confused ?
Reply #3 Mar 25, 2010 12:13 PM
Joined: Dec 17, 2009
Points: 850
Good post Eagle....and yes I believe that is the standard size piece that they use for those measurements.  So long as all companies subscribe to testing the ILD on the same size foam then they are atleast comparable figures.
Re: ILD vs Thickness - confused ?
Reply #4 Mar 25, 2010 3:20 PM
Joined: Aug 17, 2009
Points: 542
I for one am a small government person. Having said that, I must say, I believe untill the federal government steps in and requires all mattress manafactures to subscribe to a clear and understandable standard label that decribes much more than the current "Law Label" we will just have to guess regarding what we are actualy purchesing. The "Nich Market Manfactures" as I like to call the online small manafactures of latex mattresses, subscribe to a much more clear code of conduct because the internet traffic can compare the different companys products, (if we will read the websites carefully).

Untill then,... we will all just have to keep our guard up!!angry

Re: ILD vs Thickness - confused ?
Reply #5 Mar 25, 2010 4:03 PM
Joined: Oct 15, 2009
Points: 966
eagle2 wrote:

I for one am a small government person. Having said that, I must say, I believe untill the federal government steps in and requires all mattress manafactures to subscribe to a clear and understandable standard label that decribes much more than the current "Law Label" we will just have to guess regarding what we are actualy purchesing. The "Nich Market Manfactures" as I like to call the online small manafactures of latex mattresses, subscribe to a much more clear code of conduct because the internet traffic can compare the different companys products, (if we will read the websites carefully).

 

Untill then,... we will all just have to keep our guard up!!angry



For sure good labeling would be a useful government function.  I think the labeling of food products has definitely been beneficial to consumers.   I think the same would apply to mattresses.  Part of making a economy run efficiently and for the benefit of its citizens is to have as much useful information as possible in order to make informed decisions.

Re: ILD vs Thickness - confused ?
Reply #6 Mar 25, 2010 4:29 PM
Location: L.A. area
Joined: Jan 18, 2008
Points: 1161
I totally agree, and if I ever have time I'm going to write Certified Letters to my Congressmen/women about this. I suggest you all do the same.

I think the mattress companies should be required to divulge to the consumer on a ticket attached to the mattress, the type of springs, the gauge, how many layers of foam or other substances, in what order (bottom to top or vice versa), and what ILD and types of foams are present. I don't really think that would be too much to ask.

The mattress guy who used to come here, Alexander, said people do not really want to know. My argument is that people will LEARN to want to know! I'm sure people didn't really "want to know" what was in their food, at first, either, but now a lot of people care a lot. There are always those who don't care that much. But especially on a big ticket item like this where you spend about 1/3 of your life using it, I think people need to know. And I think memory foam should have to be regulated not to off-gas toxic chemicals. If they can't make it without doing that, then they should be forced to stop making it.

I'm "small government" in many cases, but I think Big Government should sometimes step in, when prudent, to provide knowledge (labeling in this case) and standards to protect the people.

I have started to sell water filter systems and I did a whole lot of research before deciding to do so. What I found out is that there are regulations but the regulations are not strong enough to prevent a lot of unscrupulous manufacturers from making unfounded claims for their filters. But at least there are a couple of non-profit testing services and certification services (one is the NSF - the National Sanitation Foundation), which does idependent lab testing and surprise visits to factories to insure an NSF-Certified For Health Standard 53 filter system does indeed filter the contaminants the company says it does. The military and others use NSF-Certified filters for their water filtering services. I think many other industries could benefit from this type of independent testing and monitoring. For example, some monitoring and certification service - government or independent - should make sure mattresses meet certain standards and divulge what is in their mattresses, and that those claims are honest. The "NMF" (the National Mattress Foundation, we could call it) would allow an NMF Seal only if they honestly divulge the materials in their mattresses and attach that label with the "NMF" seal, to the mattress!

Re: ILD vs Thickness - confused ?
Reply #7 Mar 25, 2010 4:42 PM
Joined: Dec 17, 2009
Points: 850
It is so sad to me that I actually agree with you Jim.  I mean it is actually quite ridiculous that it should get to that point, but it IS at the point where it would be very beneficial to many people if companies had to arbitrarily be more transparent in what they are selling.

Look at any other major retail product and the competitiveness in the specs and details....go and shop for a car, a TV, a high end reciever for a stereo, a computer, a cell phone, a digital camera, companies are inherently transparent with most of the specs and are always constantly trying to out do each other on it.  The mattress world is sometimes becoming about the specs, but not the same kind of full disclosure, its never the full story, its cherry picked information that is presented to people.  Bottomline is this...if a company does not list publically what their product is, there is a reason they are taking steps to conceal that info...and its not about competitive issues. 

Re: ILD vs Thickness - confused ?
Reply #8 Mar 25, 2010 6:15 PM
Joined: May 3, 2008
Points: 827
We also vote with our buying power.  Don't buy the garbage from companies that won't be honest with you.  We all have experience with these mattresses now don't we?  All of us here?

How did we get on this subject from ILD and thicknesses?  What is the conclusion to that question.  Is a 3" 42 ILD latex the same as a 6' 42 ILD????  Because I would rather buy 3" over a 6" anyday.  Easier to move around if you know what I mean wink

This message was modified Mar 25, 2010 by Leo3
Re: ILD vs Thickness - confused ?
Reply #9 Mar 25, 2010 6:25 PM
Joined: Dec 17, 2009
Points: 850
Leo...I believe that yes the actual pieces you would be buying would be somewhat comparable in firmness between the either one of these pieces.  They are realistically all made from a 6" piece of whatever ILD they claim it is, and then cut them down to size after.  So the foam itself would be the same.
Re: ILD vs Thickness - confused ?
Reply #10 Mar 25, 2010 7:17 PM
Joined: May 3, 2008
Points: 827
Thanks Budgy!
Re: ILD vs Thickness - confused ?
Reply #11 Mar 25, 2010 8:40 PM
Joined: Mar 2, 2010
Points: 27
jimsocal wrote:

I totally agree, and if I ever have time I'm going to write Certified Letters to my Congressmen/women about this. I suggest you all do the same.

I think the mattress companies should be required to divulge to the consumer on a ticket attached to the mattress, the type of springs, the gauge, how many layers of foam or other substances, in what order (bottom to top or vice versa), and what ILD and types of foams are present. I don't really think that would be too much to ask.


Jim,  I agree with the concept of full disclosure. Sadly I think the only way that is going to happen is if the "S" brands & their lobbiests write the bill.  The "S" brands, a.k.a. "mattress mafia" are self serving weasles just like congress. 

On topic with ILD vs thickness goes, maybe we need to start paying attention to foam density (LB/cu-ft), of latex.  A good portion of the toppers out there are being cut from 6" cores.

This message was modified Mar 25, 2010 by zzzombie

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