What is polyurethane foam?

A polyurethane is a polymer consisting of organic units that are joined by urethane ‘links’. A polyurethane foam has the same chemistry but is expanded during the manufacturing process to form a cellular polyurethane.

What is foam density?

The density of any material is its mass divided by its volume. In the case of polyurethane foam, a foam of relatively high density will have more polyurethane material per m3 and therefore is likely to offer better support and resistance to losses in properties such as hardness, resilience and height over periods of time.

What is foam hardness?

In terms of polyurethane foam testing, it is the amount of force required to compress a standards test sample by 40% and is expressed in Newtons (N). With a relationship between density and hardness, it is this property that is most likely ‘felt’ by the consumer when sitting on a cushion or lying on a mattress.

Understanding the grade specification (example VS50 080).

The first two letters denote a particular foam type. In this instance it is a visco elastic product. The first two digits refer to the foam’s net density with the following three numbers expressing the foam’s hardness in N (Newtons).

How do I know the foam meets UK furniture and bedding flammability regulations?

It is a legal requirement that the polyurethane foam produced by Vita Comfort UK for use in domestic furniture must comply with Schedule 1, Part 1 of the Furniture and Furnishings (Fire)(Safety) Regulations 1988 (and 1989, 1993). Vita Comfort UK takes its responsibility in relation to this regulation very seriously. In order to achieve compliance, no block of combustion modified foam is released for sale until an in–house test confirms compliance to the regulations. Furthermore, to fulfil due diligence obligations in this matter Vita Comfort UK also subjects every grade of domestic furniture foam to test by independent UKAS accredited laboratories at a frequency of once every 6 months.

What types of foams are available?

Vita Comfort UK have a range of foams available to the market.


  • Viscoelastic foams have low resilience and therefore recover slowly following the removal of applied pressure. These types of foams are hugely popular in the domestic bedding market and offer superior comfort through a much more even distribution of pressure than conventional foam equivalents.




  • CMHR foams are highly resilient, meaning they have a much higher rebound. Very little energy is absorbed by the foam compared to a conventional foam equivalent.
  • Conventional foams are the most common on the market and are well used in the furniture and bedding industry.



Within these range of foams, there are many variations of properties that can be achieved to give differing desirable properties.

Does Vita Comfort UK produce a memory foam that is 'breathable'?

The issue of breathability and temperature while sleeping are well known for many memory foam products. Vita Comfrot UK’s Vasco range is different from many foams in the market by offering significantly superior airflow and breathability characteristics. If you would like to know more, please contact your local sales manager.

What is Reflex foam?

Reflex is Vita Comfort UK’s established premium range of CM Ether foams covering densities between 24kg/m3 and 65kg /m3. Vita Reflex foam range is one of the widest available ether foam and it offers excellent durability, recovery and service life.


How can we help you

Contact Our Technical Team

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