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Cioni Materie Plastiche Espanse is synonym of innovation and precision. The activity established in Empoli, in the Florence district, is equipped with a complete converting cycle for plastic foams and cellular rubbers. The primary feature of its work is the knowledge of the material and its possible conversions, redefining its employment parameters and facing new manufacturing concepts. The company, that has always been an inspiration source for designers, architects and planners, promotes the development of new projects, with the aim of improving the performances of the products. The skill of satisfying the needs of the customer base renders the Cioni Materie Plastiche Espanse an ideal working partner.
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New Rubber foam guide

Dedicated search. This guide contains a selection of cellular foams apparently very similar to each other, as they have the same basic characteristics; however, carrying out a more accurate analysis, we see how the additional properties of these materials make each one different from the other, ensuring that each rubber performs its function in the best possible way according to the application in which it is used.

Introduction to closed cell rubber foams

Closed-cell rubber foam materials, such as those offered by TecnoGum, play a vital role in a variety of industrial applications due to their unique properties and versatility. These materials are characterized by their closed-cell structure, which offers a number of benefits that are essential to many industries, including automotive, construction, and manufacturing.

Highlights of foam rubber:

1

One of the key benefits of closed-cell rubber foam is its excellent insulating properties. Closed cells trap air, significantly reducing thermal conductivity. This characteristic makes closed-cell rubber foam an ideal choice for applications that require thermal insulation, such as HVAC, refrigeration, and pipe insulation. Studies indicate that materials with closed-cell structures can achieve thermal resistance values (R-values) that are 20-30% higher than their open-cell counterparts.

2

In addition to thermal insulation, closed-cell rubber foam materials are renowned for their water resistance. The closed-cell structure prevents water absorption, making these materials suitable for environments where exposure to moisture is a concern. This property is particularly beneficial in applications such as marine, automotive and outdoor, where prolonged exposure to water can lead to material degradation. Research shows that closed-cell rubber foams can maintain their integrity and performance in wet conditions, ensuring longevity and reliability.

3

In addition, closed-cell rubber foam exhibits excellent shock absorption and cushioning properties. This is critical in applications where impact resistance is needed, such as packaging, automotive interiors and personal protective equipment. The ability of these materials to absorb and dissipate energy can reduce the risk of damage to sensitive components, thus improving product life. Quantitative evaluations have shown that closed-cell rubber foams can absorb up to 50% more impact energy than traditional materials.

4

Another significant aspect of closed cell rubber foam is its chemical resistance. These materials are often formulated to withstand exposure to various chemicals, oils, and solvents, making them suitable for industrial environments where these substances are prevalent. The chemical stability of closed cell rubber foam ensures that its physical properties and performance will be maintained over time, even when exposed to harsh conditions.

In summary, closed cell rubber foam materials, such as those supplied by TecnoGum, offer a multitude of advantages for industrial applications. Their superior thermal insulation, water resistance, shock absorption, and chemical resistance make them indispensable in a variety of industries. As industrial sectors continue to evolve, the demand for high-performance materials such as closed cell rubber foam is expected to grow, driven by the need for efficiency, durability, and reliability in product design and manufacturing.

Comparison of elastomers

EPDM SBR Blend

The products based on Neoprene, EPDM and SBR are those with the best quality / price ratio. They allow good applications of use as air and humidity seals, anti-vibration and compression and seals or for lamps.

Nitrile Buna

These products are formulated using 100% Buna N as an elastomer. They are suitable for applications where good resistance to oil, solvents and high operating temperatures is required. They are applied in: tanks, filter seals, engines, transmissions, bearing seals, etc.

Neoprene Cloroprene

Neoprene and Chloroprene (CR): These products offer excellent performance in the creation of mechanical seals and in the automotive, aerospace, commercial, architectural, transport sectors and in all fields where a very resistant product is required. They also have good resistance to atmospheric conditions and oil.

Epicloroidrina ECH

These materials are those with the greatest resistance to hydrocarbon-based liquids and oils, to ozone, to very high or very low operating temperatures, with minimal permanent deformation. They are very suitable and reliable as seals in transmissions, motors and pumps.

Neoprene GAS expansion

This 100% Neoprene based material is created with a unique high pressure gas expansion process. This process provides it with particular physical characteristics, such as: elongation up to 500%, very high tear resistance, very little tensile stress (and therefore ease of elongation) as well as very low thermal conductivity (i.e. high insulation), which make it the best material for the creation of diving suits. The same characteristics also make it suitable for the production of very resilient and high quality seals, or for many other sports applications. In lower density, this product is specific for use in the transportation sector (seals for bridges and roads), architectural, watertight gaskets with high compression and elongation, rubber for punches, semiconductors, aerospace industry and gaskets for ovens, thanks to its ability to be repeatedly squeezed and stretched.

EPDM

Its main feature is its excellent resistance to very low temperatures, UV rays and ozone, which make it especially suitable for outdoor applications, both in the automotive and architectural fields. Thanks to its low permanent deformation it is suitable for sealing seals, but at the same time they do not have a high resistance to certain oils and hydrocarbon liquids. It is also suitable as a rubber for dies. The lower densities of this product are used for the production of fixed seals.

PDM, PE, IRR

The compounds of EPDM, polyethylene and butyl offer good performance at a relatively low price. Resistance to external agents is similar to that of EPDM and are applied where resistance to high temperatures and very low permanent deformation is not required, that is: gaskets for air, humidity and dust and in some cases also for shock absorption, thermoformed products for products consumables for design and for floating applications.

SBR, NR

The mix of SBR and NR is suitable for an infinite series of applications, from the tires of radio-controlled cars to the footwear sector. The SBR component gives it hardness, while the NR provides greater resilience and spring back. This type of rubber is used in all those sectors where a durable but at the same time resilient material is required.

PVC, NBR

The main fields of application of this low resilience product are: sports padding, knee pads, thermal / acoustic insulation and shock reduction. It finds other uses in the aerospace, automotive and where it has to seal heat or take various shapes to design.

SBR

The SBR was born as a product for the footwear sector, where it is still used, thanks to the thin cellular structure and the variety of colors, but it is very versatile and is also used in many other fields, such as: sports, industry, machinery for the food treatment, design (thanks to the low operating temperature and good permanent deformation), hobby (for example for electric cars), shoe soles, anti-vibration and glass padding (thanks to the high resilience and compactness).

CSM

This special foam has been formulated to provide high resistance to UV rays and to atmospheric agents in general. This last characteristic, together with the low density and a low compressive strength, makes this product ideal for the production of seals for buildings with corrugated structure and in all those applications where quality comes before convenience.