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Characteristics of foams


This page will teach you the basics to understand the world of foam.

In fact, the two most important variables for characterizing a foam are its density and compression.

By understanding this, you will become a wise consumer and you will be able to find the nonsense of the competition.

MATELAS, LIT ÉLECTRIQUE, LIT AJUSTABLE, OREILLER,  CHOISIR OREILLER,  BLEUECO, CASPER, MATELAS DE LATEX, MATELAS DE MOUSSE, DORMEZ-VOUS, SOMMIERS, OREILLERS, BLOOM, POLYSLEEP, MOUSSE MÉMOIRE, MEILLEUR MATELAS, ENDY, COTON ORGANIQUE, SERVICE, QUÉBEC, ACCORD D, MATELAS SIMPLE, DOUBLE QUEEN, KING, LEESA, FIANCEMENT, FABRIQUÉ AU QUÉBEC

The density

The density of a foam is synonymous with quality and durability

This measurement is expressed in lb / ft³ and represents the weight of a 1 cu. Ft. Foam block. For example, if 1 cubic foot weighs 1.8 / lb; its density will be 1.8 lb / ft³.

The higher the density, the more the foam will retain its initial properties and lift before softening or sagging. However, it will cost more to produce. A denser foam is synonymous with quality and should last much longer.

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Regular foams

The density of regular foams used in industry is between
1.0 and 2.5 lb / ft³:
  • Low : 1,0    1,1 1,2 1,3 1,4
  • Average : 1,5 1,7 1,8
  • High : 2,1 2,5

HR foams

The density of the HR foams is between 2.1 and 3.0 lb / ft 3. HR foams are more elastic and generally have a better ability to return to their original shape than regular foams. They have the ability to return the pressure of the body weight to return to their original position.
  • High : 2,1 2,5 3,0

Memory foam

The density of memory foams is between 1.5 and 8.0 lb / ft 3. These are by far the most expensive foams to produce, but also the most comfortable ones on the market.
  • Average: 1,5 2,5
  • High : 3,0 4,0 5,0 6,0 8,0

The compression

Compression indicates whether a foam is soft or firm.

This measure. expressed in lb / 50 in² gives the measure of compression. It is obtained by calculating the weight necessary to compress the foam by 40% of its initial height.

The higher the compression index, the more the foam is said to be firm. It is also related to the density, because for a foam of a given density there are several possible compressions.

Regular Foam

The compression of regular foams used in the industry ranges from 18 to 100 lb / 50 in²a compression.
  • Flexible: 18 27
  • Médium : 28 30 32 35
  • Closed: 38 40 45
  • Very Firm : 50 55 60 70 90 100

HR foam

The compression of HR foams used in the industry ranges from 19 to 75 lbs / 50in²,
  • Flexible: 19 23
  • Medium : 29 35
  • Closed: 44
  • Very firm : 55 ― 75

Memory foam

The compression of memory foam used in the industry ranges from 10 to 14 lb / 50 in². It is the best type of foam for pressure relief, but it can not be used alone, it must be combined with a support foam.
  • Very flexible: 10 12 13 14