Foam/Heat Insulation Material


Marketing Areas


NEOMA®FOAM contributes to reducing vehicle weight and improving thermal management.

NEOMA®FOAM is the foam with excellent heat insulation, flame resistance, as well as workability and achieves lightweight and high strength in a balanced manner. It contributes to weight reduction and higher functionality in various parts of automobiles.


  • Foam


  • Interior
  • Under the hood
  • Batteries

Foam/Heat Insulation Material


Product Q&A


QWhat is NEOMA®FOAM made of?

A A phenolic resin. Phenolic resins are heat-resistant resins used for parts such as the handles of frying pans. When subjected to heat, many types of plastics melt, whereas phenolic resins harden. This is a characteristic of phenolic resins.

QIs phenol, the raw material of NEOMA®FOAM, classified as an environmental hormone?

A Phenol used for NEOMA®FOAM is a substance different from bisphenol and nonylphenol which are said to be environmental hormones.

QDoes NEOMA®FOAM burn?

A Since its raw material is a phenol resin, it will not usually burn and spread even if it is exposed to fire.

QDoes NEOMA®FOAM absorb water?

A It absorbs water at a rate of less than 1.7g/100cm², which is superior to the JIS standard value (5.0g/100cm²). This level of water absorption does not cause any problem even if NEOMA®FOAM always comes in contact with moisture during use.

QIs there any problem if NEOMA®FOAM is exposed to UV rays? Neoma FOAM was discolored after exposed to UV rays.

A After NEOMA®FOAM is exposed to UV rays, only its surface layer may lose its color and turn yellow. However, its properties, such as heat insulation and strength, are not affected. NEOMA®FOAM can be used with peace of mind. This occurs because phenol resins have a characteristic of stabilizing their own structure, and discoloration occurs during the stabilization processes. However, NEOMA®FOAM deteriorates if it is constantly exposed to UV rays for a long period of time, as is the case with many other types of plastic. Therefore, be sure to take protective measures, such as covering it with a sheet during transportation and storage.

QDo the heat insulation properties of NEOMA®FOAM deteriorate?

A It cannot be said that NEOMA®FOAM does not deteriorate at all. It deteriorates, as is the case with common foam plastic heat insulation materials. However, the results of experiments show that the degree of its deterioration is minor. This occurs because the rate of independent air bubbles is extremely high, yet the gas permeability of the phenol resins forming the air bubbles is extremely low.

QAre dust particles of NEOMA®FOAM harmful?

A A test complying with the OECD Guidelines did not show that dust particles of NEOMA®FOAM are harmful to human health. However, if the dust enters the eyes, do not rub the eyes, but wash them with running water. If you should inhale the dust, take action such as gargling to discharge the dust from your body.

QHow do I dispose of leftovers of NEOMA®FOAM?

A To dispose them of, ask a licensed industrial waste disposal company to do so, complying with the Wastes Disposal and Public Cleansing Act. Do not compress or grind NEOMA®FOAM during disposal..

QCan I use NEOMA®FOAM in countries other than Japan?

A For NEOMA®FOAM to be used outside Japan, the user is required to confirm whether its specifications conform to the laws and standards of the country of use.

In response to next-generation vehicle-related challenges of thermal management and fuel efficiency improvement derived from weight reduction, NEOMA®FOAM proposes a solution.

In response to next-generation vehicle-related challenges of thermal management and fuel efficiency improvement derived from weight reduction, NEOMA®FOAM proposes a solution.


High heat insulation

In the automotive industry, as technological innovations are advancing in a new area called "CASE," there is a growing movement to seek the comfort of houses inside vehicles as well.
The comfortable space of the highest quality created by NEOMA®FOAM with world-leading heat insulation performance is receiving attention in the automotive industry, let alone the housing industry.


Achieving both light weight and strength 

NEOMA®FOAM uses its unique foaming technology to achieve light weight while maintaining strength that exceeds JIS standard values*. In addition, due to its high heat resistance, it exhibits excellent performance in terms of shape stability even in environments with large temperature changes.

Usage example01

Application for lithium-ion battery (LiB) module cases

To improve fuel or electricity consumption, further weight reduction is a must. An effective way to reduce weight is to change materials, especially changing of conventional materials to resin.
Replacing the materials of vehicle LiB module cases with resin is one such method. However, laws and regulations require a test in which the bottom of a vehicle LiB module case is heated by fire*. Therefore, replacing them with resin is difficult.
Accordingly, we focused on flame resistance for NEOMA®FOAM. We placed LiBs on NEOMA®FOAM in a module case, simulated and predicted the temperature increase, and checked if a fire would occur.
The results of the simulation revealed that NEOMA®FOAM prevents both the temperature of the LiBs from increasing and the module case from burning. Thus, NEOMA®FOAM is expected to contribute to the weight reduction of LiB module cases. Let’s compare NEOMA®FOAM with a commonly used steel sheet. The former is about 50 times lighter.
*The United Nations Economic Commission for Europe (UNECE) has set the following standard: The LiB module case must not burn in a gasoline pool fire test in which the module case is heated by a fire of 800°C for about 120 seconds.

Through a simulation, we verified the effect of NEOMA®FOAM, on which LiBs were placed in an LiB module case, on suppressing the temperature increase of the LiB.

Usage example02

Application to parts for which high heat insulation properties are required

The heat insulation of NEOMA®FOAM is represented by the world’s leading thermal conductivity, λ = 0.020 [W/(m・K)]. Compared with other heat insulation materials, NEOMA®FOAM provides reliable heat insulation performance with a thinner thickness. For example, it is said that the temperature of the roof of a car increases to nearly 80°C in direct sunlight in midsummer. Thanks to its heat insulation properties, NEOMA®FOAM whose thickness is only a few millimeters reduces the transfer of direct heat to the inside of the vehicle, thereby reducing heating and cooling energy.

Through a simulation, we verified the effect of NEOMA®FOAM, which enclosed a battery, on shielding ambient heat.

Contribution to the environment

Heat insulation material that is surely friendly to the global environment

■CFC-free product ideal for the global environment
NEOMA®FOAM is developed as the industry’s first high-performance heat insulation material that does not contain any CFC or substitute for CFCs which was naturally used in the past. Now, the non-use of such substances has become a common practice.

■Efforts for recycling
Although it has been said that the recycling of phenolic resins, which are thermosetting resins, is difficult, Asahi Kasei recycles materials, utilizing its own technology.

■Product that complies with the Act on Promoting Green Purchasing
The Japanese government established the Act to require institutions including government agencies to preferentially select products or services that are less burdensome to the environment when they purchase such products or services. Heat insulation materials are subject to the Act. NEOMA®FOAM meets the criteria of the Act.

■Received the Minister of the Environment Award at the 18th Green Sustainable Chemistry (GSC) Awards in Japan.
The adjudicators evaluated that NEOMA®FOAM will contribute to resource saving, energy saving, as well as CO2 emissions reduction and help promote green sustainable chemistry thanks to the product’s excellent heat insulation properties and to its excellent properties which will not easily deteriorate for a long period of time.

■Measures for environmental regulations
We have inspected 10 hazardous substances including lead and mercury which are specified by the revised RoHS Directive (RoHS2) and which are contained in NEOMA®FOAM. We have verified that the amount of each of the 10 substances contained in NEOMA®FOAM is below the standard value.

* RoHS is the safety standards, established by the European Union, for certain hazardous substances.
The standards are established to mainly restrict the use of the hazardous substances for electrical or electronic equipment. Although the former RoHS Directive regulated six hazardous substances, in the revised RoHS Directive, the number of such substances has been increased to 10.The materials of NEOMA®FOAM also comply with the Regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH).
Contact us for further information on conditions such as compliance with the latest REACH-SVHC (substances of very high concern) List.

Product Q&A


Related Products

Sign up for our newsletter

Register your e-mail address
to receive the latest Asahi Kasei automotive news.

Sign up