Choosing the best raw material is a matter of know-how and feeling. Building on a network of global resources, Diroy has a range of foams with a wide diversity, rigorously selected for their quality, properties, density and flexibility. In keeping with its long-term goals, it is also easy for Diroy to ensure that the future is safeguarded by focusing on unimpeachable materials, both for their ability to increase comfort and well-being and respect for the environment.
OUR QUALITY CRITERIA & NON-FIRE STANDARDS
DENSITY & LIFT
Density, expressed in kg/m³, refers to the weight of a 1-meter cube of foam. This criterion determines the strength and quality of the foam. The density is indicated in gross cast value.
Density directly influences quality, the higher the density, the more the material will retain its properties over time.
Foam lift refers to the pressure required to depress a block of foam to a certain percentage of the initial thickness.
It is expressed in kilo Pascal (kPa) or in Newton (N) according to the specific measurement tests.
- In kPa, it expresses resistance to compression at 40% depression.
- The higher the kPA value, the firmer the foam. The lower it is, the softer the foam.
- The compressive strength in kPa is given as an indication in average value.
- In Newton, it expresses hardness by indentation. The comparative tests are done as a percentage of compression: at 25%, 40% and 65%. 25% corresponds to the pressure of the body on a backrest and 65% to pressure on a seat.
- Also, the lower the values, the softer the foam. The higher they are, the firmer the foam is. In some cases, this test makes it possible to refine the compressive strength value.
NON-FIRE STANDARDS
Our stock and range of items allows us to offer the following products meeting non-fire standards:
- LCPP M 4 Standard (France)
- NF Standard EN 1021-1 / Part 1 & 2 (France)
- NF Standard D60-013 (France)
- BS 5852 CRIB 5 Standard (England & Europe)
- DIN 4102 B1 Standard (Germany)
- CH BKZ 5.2 & 5.3 Standard (Switzerland)
- UNI 9175 Standard (Italy)
- California TB117 Standard (United States)
- FAR Standard 25.853 Appendix F part I (Aeronautics)
- IMO Standard 652 (Nautical)
- FMVSS Standard (Road)
- UL94 Standard (Road)
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