Foam Density Chart

Making subtle changes in chemistry density and opened or closed cell content the physical properties of foams can be tuned to a specific application.

Foam density chart. High density polyfoam while high density polyfoam would typically be defined as one that measures 1 5 lbs ft i feel 1 8 lbs ft is a better guideline. To read our reviews of these brands please click the links found in the left hand column. This isn t the case. For memory foam the manufacturer takes a piece of foam that s one cubic foot.

For you visual learners it s represented by the equation. Foam density can be controlled in the range of 50 400 kg m 3. The table below includes comfort layer and support core density figures for some of the today s most popular all foam beds along firmness levels and current price points. Picture a styrofoam cup for example.

For example if a foam is identified with the number 1835 the 18 means a cubic foot of this foam weighs 1 8 pounds the heavier a piece of foam the longer it will maintain its shape and the 35 means it takes 35 pounds of pressure to compress a piece of this foam to 25 of its original height the higher the number the firmer the piece of. Notice how an entirely different ild rating can be produced using a density rating in the 2 7 2 8 range. Density is a function of the chemistry used to produce the foam and additives included with the foam chemistry. Density is a measurement of the mass per unit volume.

The high density foam mattress advantages are typically worth added initial investment. This should illustrate the importance of the ild rating in selecting a suitable foam for your needs. Lower density foam is also great for occasional use comfort products. A common misunderstanding is that the density of foam in a mattress or pillow for example determines its firmness.

Below is a chart which describes some of the different foam materials. A low density foam can still be firm or hard. The measurements are 12 inches x 12 inches x 12 inches. A high density foam is not necessarily the proper firmness.

If used as a soft bed topper by an average sized individual every day a 1 5lb density foam will begin to show a noticeable decline in support and comfort after six months to a year. Measured and expressed in pounds per cubic foot pcf or kilograms per cubic meter kg m3 density is one of the most important of all foam properties. To view product pages click the links in the second column from the left. Huntington beach ca 92648.

Density tells you the weight of the foam more accurately than the firmness.